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linux/sound/soc/atmel/mchp-i2s-mcc.c

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ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
// SPDX-License-Identifier: GPL-2.0
//
// Driver for Microchip I2S Multi-channel controller
//
// Copyright (C) 2018 Microchip Technology Inc. and its subsidiaries
//
// Author: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/mfd/syscon.h>
#include <linux/lcm.h>
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
#include <linux/of_device.h>
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
/*
* ---- I2S Controller Register map ----
*/
#define MCHP_I2SMCC_CR 0x0000 /* Control Register */
#define MCHP_I2SMCC_MRA 0x0004 /* Mode Register A */
#define MCHP_I2SMCC_MRB 0x0008 /* Mode Register B */
#define MCHP_I2SMCC_SR 0x000C /* Status Register */
#define MCHP_I2SMCC_IERA 0x0010 /* Interrupt Enable Register A */
#define MCHP_I2SMCC_IDRA 0x0014 /* Interrupt Disable Register A */
#define MCHP_I2SMCC_IMRA 0x0018 /* Interrupt Mask Register A */
#define MCHP_I2SMCC_ISRA 0X001C /* Interrupt Status Register A */
#define MCHP_I2SMCC_IERB 0x0020 /* Interrupt Enable Register B */
#define MCHP_I2SMCC_IDRB 0x0024 /* Interrupt Disable Register B */
#define MCHP_I2SMCC_IMRB 0x0028 /* Interrupt Mask Register B */
#define MCHP_I2SMCC_ISRB 0X002C /* Interrupt Status Register B */
#define MCHP_I2SMCC_RHR 0x0030 /* Receiver Holding Register */
#define MCHP_I2SMCC_THR 0x0034 /* Transmitter Holding Register */
#define MCHP_I2SMCC_RHL0R 0x0040 /* Receiver Holding Left 0 Register */
#define MCHP_I2SMCC_RHR0R 0x0044 /* Receiver Holding Right 0 Register */
#define MCHP_I2SMCC_RHL1R 0x0048 /* Receiver Holding Left 1 Register */
#define MCHP_I2SMCC_RHR1R 0x004C /* Receiver Holding Right 1 Register */
#define MCHP_I2SMCC_RHL2R 0x0050 /* Receiver Holding Left 2 Register */
#define MCHP_I2SMCC_RHR2R 0x0054 /* Receiver Holding Right 2 Register */
#define MCHP_I2SMCC_RHL3R 0x0058 /* Receiver Holding Left 3 Register */
#define MCHP_I2SMCC_RHR3R 0x005C /* Receiver Holding Right 3 Register */
#define MCHP_I2SMCC_THL0R 0x0060 /* Transmitter Holding Left 0 Register */
#define MCHP_I2SMCC_THR0R 0x0064 /* Transmitter Holding Right 0 Register */
#define MCHP_I2SMCC_THL1R 0x0068 /* Transmitter Holding Left 1 Register */
#define MCHP_I2SMCC_THR1R 0x006C /* Transmitter Holding Right 1 Register */
#define MCHP_I2SMCC_THL2R 0x0070 /* Transmitter Holding Left 2 Register */
#define MCHP_I2SMCC_THR2R 0x0074 /* Transmitter Holding Right 2 Register */
#define MCHP_I2SMCC_THL3R 0x0078 /* Transmitter Holding Left 3 Register */
#define MCHP_I2SMCC_THR3R 0x007C /* Transmitter Holding Right 3 Register */
#define MCHP_I2SMCC_VERSION 0x00FC /* Version Register */
/*
* ---- Control Register (Write-only) ----
*/
#define MCHP_I2SMCC_CR_RXEN BIT(0) /* Receiver Enable */
#define MCHP_I2SMCC_CR_RXDIS BIT(1) /* Receiver Disable */
#define MCHP_I2SMCC_CR_CKEN BIT(2) /* Clock Enable */
#define MCHP_I2SMCC_CR_CKDIS BIT(3) /* Clock Disable */
#define MCHP_I2SMCC_CR_TXEN BIT(4) /* Transmitter Enable */
#define MCHP_I2SMCC_CR_TXDIS BIT(5) /* Transmitter Disable */
#define MCHP_I2SMCC_CR_SWRST BIT(7) /* Software Reset */
/*
* ---- Mode Register A (Read/Write) ----
*/
#define MCHP_I2SMCC_MRA_MODE_MASK GENMASK(0, 0)
#define MCHP_I2SMCC_MRA_MODE_SLAVE (0 << 0)
#define MCHP_I2SMCC_MRA_MODE_MASTER (1 << 0)
#define MCHP_I2SMCC_MRA_DATALENGTH_MASK GENMASK(3, 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_32_BITS (0 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_24_BITS (1 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_20_BITS (2 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_18_BITS (3 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_16_BITS (4 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_16_BITS_COMPACT (5 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_8_BITS (6 << 1)
#define MCHP_I2SMCC_MRA_DATALENGTH_8_BITS_COMPACT (7 << 1)
#define MCHP_I2SMCC_MRA_WIRECFG_MASK GENMASK(5, 4)
ASoC: mchp-i2s-mcc: Add support to select TDM pins SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a single pair of pins for synchronous capture and playback, the controller needs to be told which of the pair is connected. This can be mentioned using the "microchip,tdm-data-pair" property from DT. The property is optional, useful only if TDM is used. If it's missing, DIN/DOUT 0 pins will be used by default. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-6-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:03 +08:00
#define MCHP_I2SMCC_MRA_WIRECFG_TDM(pin) (((pin) << 4) & \
MCHP_I2SMCC_MRA_WIRECFG_MASK)
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
#define MCHP_I2SMCC_MRA_WIRECFG_I2S_1_TDM_0 (0 << 4)
#define MCHP_I2SMCC_MRA_WIRECFG_I2S_2_TDM_1 (1 << 4)
#define MCHP_I2SMCC_MRA_WIRECFG_I2S_4_TDM_2 (2 << 4)
#define MCHP_I2SMCC_MRA_WIRECFG_TDM_3 (3 << 4)
#define MCHP_I2SMCC_MRA_FORMAT_MASK GENMASK(7, 6)
#define MCHP_I2SMCC_MRA_FORMAT_I2S (0 << 6)
#define MCHP_I2SMCC_MRA_FORMAT_LJ (1 << 6) /* Left Justified */
#define MCHP_I2SMCC_MRA_FORMAT_TDM (2 << 6)
#define MCHP_I2SMCC_MRA_FORMAT_TDMLJ (3 << 6)
/* Transmitter uses one DMA channel ... */
/* Left audio samples duplicated to right audio channel */
#define MCHP_I2SMCC_MRA_RXMONO BIT(8)
/* I2SDO output of I2SC is internally connected to I2SDI input */
#define MCHP_I2SMCC_MRA_RXLOOP BIT(9)
/* Receiver uses one DMA channel ... */
/* Left audio samples duplicated to right audio channel */
#define MCHP_I2SMCC_MRA_TXMONO BIT(10)
/* x sample transmitted when underrun */
#define MCHP_I2SMCC_MRA_TXSAME_ZERO (0 << 11) /* Zero sample */
#define MCHP_I2SMCC_MRA_TXSAME_PREVIOUS (1 << 11) /* Previous sample */
/* select between peripheral clock and generated clock */
#define MCHP_I2SMCC_MRA_SRCCLK_PCLK (0 << 12)
#define MCHP_I2SMCC_MRA_SRCCLK_GCLK (1 << 12)
/* Number of TDM Channels - 1 */
#define MCHP_I2SMCC_MRA_NBCHAN_MASK GENMASK(15, 13)
#define MCHP_I2SMCC_MRA_NBCHAN(ch) \
((((ch) - 1) << 13) & MCHP_I2SMCC_MRA_NBCHAN_MASK)
/* Selected Clock to I2SMCC Master Clock ratio */
#define MCHP_I2SMCC_MRA_IMCKDIV_MASK GENMASK(21, 16)
#define MCHP_I2SMCC_MRA_IMCKDIV(div) \
(((div) << 16) & MCHP_I2SMCC_MRA_IMCKDIV_MASK)
/* TDM Frame Synchronization */
#define MCHP_I2SMCC_MRA_TDMFS_MASK GENMASK(23, 22)
#define MCHP_I2SMCC_MRA_TDMFS_SLOT (0 << 22)
#define MCHP_I2SMCC_MRA_TDMFS_HALF (1 << 22)
#define MCHP_I2SMCC_MRA_TDMFS_BIT (2 << 22)
/* Selected Clock to I2SMC Serial Clock ratio */
#define MCHP_I2SMCC_MRA_ISCKDIV_MASK GENMASK(29, 24)
#define MCHP_I2SMCC_MRA_ISCKDIV(div) \
(((div) << 24) & MCHP_I2SMCC_MRA_ISCKDIV_MASK)
/* Master Clock mode */
#define MCHP_I2SMCC_MRA_IMCKMODE_MASK GENMASK(30, 30)
/* 0: No master clock generated*/
#define MCHP_I2SMCC_MRA_IMCKMODE_NONE (0 << 30)
/* 1: master clock generated (internally generated clock drives I2SMCK pin) */
#define MCHP_I2SMCC_MRA_IMCKMODE_GEN (1 << 30)
/* Slot Width */
/* 0: slot is 32 bits wide for DATALENGTH = 18/20/24 bits. */
/* 1: slot is 24 bits wide for DATALENGTH = 18/20/24 bits. */
#define MCHP_I2SMCC_MRA_IWS BIT(31)
/*
* ---- Mode Register B (Read/Write) ----
*/
/* all enabled I2S left channels are filled first, then I2S right channels */
#define MCHP_I2SMCC_MRB_CRAMODE_LEFT_FIRST (0 << 0)
/*
* an enabled I2S left channel is filled, then the corresponding right
* channel, until all channels are filled
*/
#define MCHP_I2SMCC_MRB_CRAMODE_REGULAR (1 << 0)
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
#define MCHP_I2SMCC_MRB_FIFOEN BIT(4)
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
#define MCHP_I2SMCC_MRB_DMACHUNK_MASK GENMASK(9, 8)
#define MCHP_I2SMCC_MRB_DMACHUNK(no_words) \
(((fls(no_words) - 1) << 8) & MCHP_I2SMCC_MRB_DMACHUNK_MASK)
#define MCHP_I2SMCC_MRB_CLKSEL_MASK GENMASK(16, 16)
#define MCHP_I2SMCC_MRB_CLKSEL_EXT (0 << 16)
#define MCHP_I2SMCC_MRB_CLKSEL_INT (1 << 16)
/*
* ---- Status Registers (Read-only) ----
*/
#define MCHP_I2SMCC_SR_RXEN BIT(0) /* Receiver Enabled */
#define MCHP_I2SMCC_SR_TXEN BIT(4) /* Transmitter Enabled */
/*
* ---- Interrupt Enable/Disable/Mask/Status Registers A ----
*/
#define MCHP_I2SMCC_INT_TXRDY_MASK(ch) GENMASK((ch) - 1, 0)
#define MCHP_I2SMCC_INT_TXRDYCH(ch) BIT(ch)
#define MCHP_I2SMCC_INT_TXUNF_MASK(ch) GENMASK((ch) + 7, 8)
#define MCHP_I2SMCC_INT_TXUNFCH(ch) BIT((ch) + 8)
#define MCHP_I2SMCC_INT_RXRDY_MASK(ch) GENMASK((ch) + 15, 16)
#define MCHP_I2SMCC_INT_RXRDYCH(ch) BIT((ch) + 16)
#define MCHP_I2SMCC_INT_RXOVF_MASK(ch) GENMASK((ch) + 23, 24)
#define MCHP_I2SMCC_INT_RXOVFCH(ch) BIT((ch) + 24)
/*
* ---- Interrupt Enable/Disable/Mask/Status Registers B ----
*/
#define MCHP_I2SMCC_INT_WERR BIT(0)
#define MCHP_I2SMCC_INT_TXFFRDY BIT(8)
#define MCHP_I2SMCC_INT_TXFFEMP BIT(9)
#define MCHP_I2SMCC_INT_RXFFRDY BIT(12)
#define MCHP_I2SMCC_INT_RXFFFUL BIT(13)
/*
* ---- Version Register (Read-only) ----
*/
#define MCHP_I2SMCC_VERSION_MASK GENMASK(11, 0)
#define MCHP_I2SMCC_MAX_CHANNELS 8
#define MCHP_I2MCC_TDM_SLOT_WIDTH 32
static const struct regmap_config mchp_i2s_mcc_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = MCHP_I2SMCC_VERSION,
};
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
struct mchp_i2s_mcc_soc_data {
unsigned int data_pin_pair_num;
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
bool has_fifo;
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
};
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
struct mchp_i2s_mcc_dev {
struct wait_queue_head wq_txrdy;
struct wait_queue_head wq_rxrdy;
struct device *dev;
struct regmap *regmap;
struct clk *pclk;
struct clk *gclk;
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
const struct mchp_i2s_mcc_soc_data *soc;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
struct snd_dmaengine_dai_dma_data playback;
struct snd_dmaengine_dai_dma_data capture;
unsigned int fmt;
unsigned int sysclk;
unsigned int frame_length;
int tdm_slots;
int channels;
ASoC: mchp-i2s-mcc: Add support to select TDM pins SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a single pair of pins for synchronous capture and playback, the controller needs to be told which of the pair is connected. This can be mentioned using the "microchip,tdm-data-pair" property from DT. The property is optional, useful only if TDM is used. If it's missing, DIN/DOUT 0 pins will be used by default. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-6-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:03 +08:00
u8 tdm_data_pair;
ASoC: mchp-i2s-mcc: make signed 1 bit bitfields unsigned The signed 1 bit bitfields should be unsigned, so make them unsigned. Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20200325132913.110115-1-colin.king@canonical.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-25 21:29:13 +08:00
unsigned int gclk_use:1;
unsigned int gclk_running:1;
unsigned int tx_rdy:1;
unsigned int rx_rdy:1;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
};
static irqreturn_t mchp_i2s_mcc_interrupt(int irq, void *dev_id)
{
struct mchp_i2s_mcc_dev *dev = dev_id;
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
u32 sra, imra, srb, imrb, pendinga, pendingb, idra = 0, idrb = 0;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
irqreturn_t ret = IRQ_NONE;
regmap_read(dev->regmap, MCHP_I2SMCC_IMRA, &imra);
regmap_read(dev->regmap, MCHP_I2SMCC_ISRA, &sra);
pendinga = imra & sra;
regmap_read(dev->regmap, MCHP_I2SMCC_IMRB, &imrb);
regmap_read(dev->regmap, MCHP_I2SMCC_ISRB, &srb);
pendingb = imrb & srb;
if (!pendinga && !pendingb)
return IRQ_NONE;
/*
* Tx/Rx ready interrupts are enabled when stopping only, to assure
* availability and to disable clocks if necessary
*/
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo) {
idrb |= pendingb & (MCHP_I2SMCC_INT_TXFFRDY |
MCHP_I2SMCC_INT_RXFFRDY);
} else {
idra |= pendinga & (MCHP_I2SMCC_INT_TXRDY_MASK(dev->channels) |
MCHP_I2SMCC_INT_RXRDY_MASK(dev->channels));
}
if (idra || idrb)
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
ret = IRQ_HANDLED;
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if ((!dev->soc->has_fifo &&
(imra & MCHP_I2SMCC_INT_TXRDY_MASK(dev->channels)) &&
(imra & MCHP_I2SMCC_INT_TXRDY_MASK(dev->channels)) ==
(idra & MCHP_I2SMCC_INT_TXRDY_MASK(dev->channels))) ||
(dev->soc->has_fifo && imrb & MCHP_I2SMCC_INT_TXFFRDY)) {
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
dev->tx_rdy = 1;
wake_up_interruptible(&dev->wq_txrdy);
}
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if ((!dev->soc->has_fifo &&
(imra & MCHP_I2SMCC_INT_RXRDY_MASK(dev->channels)) &&
(imra & MCHP_I2SMCC_INT_RXRDY_MASK(dev->channels)) ==
(idra & MCHP_I2SMCC_INT_RXRDY_MASK(dev->channels))) ||
(dev->soc->has_fifo && imrb & MCHP_I2SMCC_INT_RXFFRDY)) {
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
dev->rx_rdy = 1;
wake_up_interruptible(&dev->wq_rxrdy);
}
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo)
regmap_write(dev->regmap, MCHP_I2SMCC_IDRB, idrb);
else
regmap_write(dev->regmap, MCHP_I2SMCC_IDRA, idra);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
return ret;
}
static int mchp_i2s_mcc_set_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
dev_dbg(dev->dev, "%s() clk_id=%d freq=%u dir=%d\n",
__func__, clk_id, freq, dir);
/* We do not need SYSCLK */
if (dir == SND_SOC_CLOCK_IN)
return 0;
dev->sysclk = freq;
return 0;
}
static int mchp_i2s_mcc_set_bclk_ratio(struct snd_soc_dai *dai,
unsigned int ratio)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
dev_dbg(dev->dev, "%s() ratio=%u\n", __func__, ratio);
dev->frame_length = ratio;
return 0;
}
static int mchp_i2s_mcc_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
dev_dbg(dev->dev, "%s() fmt=%#x\n", __func__, fmt);
/* We don't support any kind of clock inversion */
if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF)
return -EINVAL;
/* We can't generate only FSYNC */
ASoC: atmel: Convert to new style DAI format definitions Convert the Atmel drivers to use the new style defines for clocking in DAI formats. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Acked-by: Peter Rosin <peda@axentia.se>
2021-09-16 01:30:23 +08:00
if ((fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) == SND_SOC_DAIFMT_CBP_CFC)
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
return -EINVAL;
/* We can only reconfigure the IP when it's stopped */
if (fmt & SND_SOC_DAIFMT_CONT)
return -EINVAL;
dev->fmt = fmt;
return 0;
}
static int mchp_i2s_mcc_set_dai_tdm_slot(struct snd_soc_dai *dai,
unsigned int tx_mask,
unsigned int rx_mask,
int slots, int slot_width)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
dev_dbg(dev->dev,
"%s() tx_mask=0x%08x rx_mask=0x%08x slots=%d width=%d\n",
__func__, tx_mask, rx_mask, slots, slot_width);
if (slots < 0 || slots > MCHP_I2SMCC_MAX_CHANNELS ||
slot_width != MCHP_I2MCC_TDM_SLOT_WIDTH)
return -EINVAL;
if (slots) {
/* We do not support daisy chain */
if (rx_mask != GENMASK(slots - 1, 0) ||
rx_mask != tx_mask)
return -EINVAL;
}
dev->tdm_slots = slots;
dev->frame_length = slots * MCHP_I2MCC_TDM_SLOT_WIDTH;
return 0;
}
static int mchp_i2s_mcc_clk_get_rate_diff(struct clk *clk,
unsigned long rate,
struct clk **best_clk,
unsigned long *best_rate,
unsigned long *best_diff_rate)
{
long round_rate;
unsigned int diff_rate;
round_rate = clk_round_rate(clk, rate);
if (round_rate < 0)
return (int)round_rate;
diff_rate = abs(rate - round_rate);
if (diff_rate < *best_diff_rate) {
*best_clk = clk;
*best_diff_rate = diff_rate;
*best_rate = rate;
}
return 0;
}
static int mchp_i2s_mcc_config_divs(struct mchp_i2s_mcc_dev *dev,
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
unsigned int bclk, unsigned int *mra,
unsigned long *best_rate)
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
{
unsigned long clk_rate;
unsigned long lcm_rate;
unsigned long best_diff_rate = ~0;
unsigned int sysclk;
struct clk *best_clk = NULL;
int ret;
/* For code simplification */
if (!dev->sysclk)
sysclk = bclk;
else
sysclk = dev->sysclk;
/*
* MCLK is Selected CLK / (2 * IMCKDIV),
* BCLK is Selected CLK / (2 * ISCKDIV);
* if IMCKDIV or ISCKDIV are 0, MCLK or BCLK = Selected CLK
*/
lcm_rate = lcm(sysclk, bclk);
if ((lcm_rate / sysclk % 2 == 1 && lcm_rate / sysclk > 2) ||
(lcm_rate / bclk % 2 == 1 && lcm_rate / bclk > 2))
lcm_rate *= 2;
for (clk_rate = lcm_rate;
(clk_rate == sysclk || clk_rate / (sysclk * 2) <= GENMASK(5, 0)) &&
(clk_rate == bclk || clk_rate / (bclk * 2) <= GENMASK(5, 0));
clk_rate += lcm_rate) {
ret = mchp_i2s_mcc_clk_get_rate_diff(dev->gclk, clk_rate,
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
&best_clk, best_rate,
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
&best_diff_rate);
if (ret) {
dev_err(dev->dev, "gclk error for rate %lu: %d",
clk_rate, ret);
} else {
if (!best_diff_rate) {
dev_dbg(dev->dev, "found perfect rate on gclk: %lu\n",
clk_rate);
break;
}
}
ret = mchp_i2s_mcc_clk_get_rate_diff(dev->pclk, clk_rate,
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
&best_clk, best_rate,
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
&best_diff_rate);
if (ret) {
dev_err(dev->dev, "pclk error for rate %lu: %d",
clk_rate, ret);
} else {
if (!best_diff_rate) {
dev_dbg(dev->dev, "found perfect rate on pclk: %lu\n",
clk_rate);
break;
}
}
}
/* check if clocks returned only errors */
if (!best_clk) {
dev_err(dev->dev, "unable to change rate to clocks\n");
return -EINVAL;
}
dev_dbg(dev->dev, "source CLK is %s with rate %lu, diff %lu\n",
best_clk == dev->pclk ? "pclk" : "gclk",
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
*best_rate, best_diff_rate);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
/* Configure divisors */
if (dev->sysclk)
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
*mra |= MCHP_I2SMCC_MRA_IMCKDIV(*best_rate / (2 * sysclk));
*mra |= MCHP_I2SMCC_MRA_ISCKDIV(*best_rate / (2 * bclk));
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
if (best_clk == dev->gclk)
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
*mra |= MCHP_I2SMCC_MRA_SRCCLK_GCLK;
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
else
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
*mra |= MCHP_I2SMCC_MRA_SRCCLK_PCLK;
return 0;
}
static int mchp_i2s_mcc_is_running(struct mchp_i2s_mcc_dev *dev)
{
u32 sr;
regmap_read(dev->regmap, MCHP_I2SMCC_SR, &sr);
return !!(sr & (MCHP_I2SMCC_SR_TXEN | MCHP_I2SMCC_SR_RXEN));
}
static int mchp_i2s_mcc_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
unsigned long rate = 0;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
u32 mra = 0;
u32 mrb = 0;
unsigned int channels = params_channels(params);
unsigned int frame_length = dev->frame_length;
unsigned int bclk_rate;
int set_divs = 0;
int ret;
bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
dev_dbg(dev->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
__func__, params_rate(params), params_format(params),
params_width(params), params_channels(params));
switch (dev->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
if (dev->tdm_slots) {
dev_err(dev->dev, "I2S with TDM is not supported\n");
return -EINVAL;
}
mra |= MCHP_I2SMCC_MRA_FORMAT_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
if (dev->tdm_slots) {
dev_err(dev->dev, "Left-Justified with TDM is not supported\n");
return -EINVAL;
}
mra |= MCHP_I2SMCC_MRA_FORMAT_LJ;
break;
case SND_SOC_DAIFMT_DSP_A:
mra |= MCHP_I2SMCC_MRA_FORMAT_TDM;
break;
default:
dev_err(dev->dev, "unsupported bus format\n");
return -EINVAL;
}
ASoC: atmel: Convert to new style DAI format definitions Convert the Atmel drivers to use the new style defines for clocking in DAI formats. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Acked-by: Peter Rosin <peda@axentia.se>
2021-09-16 01:30:23 +08:00
switch (dev->fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC:
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
/* cpu is BCLK and LRC master */
mra |= MCHP_I2SMCC_MRA_MODE_MASTER;
if (dev->sysclk)
mra |= MCHP_I2SMCC_MRA_IMCKMODE_GEN;
set_divs = 1;
break;
ASoC: atmel: Convert to new style DAI format definitions Convert the Atmel drivers to use the new style defines for clocking in DAI formats. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Acked-by: Peter Rosin <peda@axentia.se>
2021-09-16 01:30:23 +08:00
case SND_SOC_DAIFMT_CBC_CFP:
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
/* cpu is BCLK master */
mrb |= MCHP_I2SMCC_MRB_CLKSEL_INT;
set_divs = 1;
treewide: Use fallthrough pseudo-keyword Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-24 06:36:59 +08:00
fallthrough;
ASoC: atmel: Convert to new style DAI format definitions Convert the Atmel drivers to use the new style defines for clocking in DAI formats. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Acked-by: Peter Rosin <peda@axentia.se>
2021-09-16 01:30:23 +08:00
case SND_SOC_DAIFMT_CBP_CFP:
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
/* cpu is slave */
mra |= MCHP_I2SMCC_MRA_MODE_SLAVE;
if (dev->sysclk)
dev_warn(dev->dev, "Unable to generate MCLK in Slave mode\n");
break;
default:
dev_err(dev->dev, "unsupported master/slave mode\n");
return -EINVAL;
}
if (dev->fmt & (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J)) {
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
/* for I2S and LEFT_J one pin is needed for every 2 channels */
if (channels > dev->soc->data_pin_pair_num * 2) {
dev_err(dev->dev,
"unsupported number of audio channels: %d\n",
channels);
return -EINVAL;
}
/* enable for interleaved format */
mrb |= MCHP_I2SMCC_MRB_CRAMODE_REGULAR;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
switch (channels) {
case 1:
if (is_playback)
mra |= MCHP_I2SMCC_MRA_TXMONO;
else
mra |= MCHP_I2SMCC_MRA_RXMONO;
break;
case 2:
break;
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
case 4:
mra |= MCHP_I2SMCC_MRA_WIRECFG_I2S_2_TDM_1;
break;
case 8:
mra |= MCHP_I2SMCC_MRA_WIRECFG_I2S_4_TDM_2;
break;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
default:
dev_err(dev->dev, "unsupported number of audio channels\n");
return -EINVAL;
}
if (!frame_length)
frame_length = 2 * params_physical_width(params);
} else if (dev->fmt & SND_SOC_DAIFMT_DSP_A) {
ASoC: mchp-i2s-mcc: Add support to select TDM pins SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a single pair of pins for synchronous capture and playback, the controller needs to be told which of the pair is connected. This can be mentioned using the "microchip,tdm-data-pair" property from DT. The property is optional, useful only if TDM is used. If it's missing, DIN/DOUT 0 pins will be used by default. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-6-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:03 +08:00
mra |= MCHP_I2SMCC_MRA_WIRECFG_TDM(dev->tdm_data_pair);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
if (dev->tdm_slots) {
if (channels % 2 && channels * 2 <= dev->tdm_slots) {
/*
* Duplicate data for even-numbered channels
* to odd-numbered channels
*/
if (is_playback)
mra |= MCHP_I2SMCC_MRA_TXMONO;
else
mra |= MCHP_I2SMCC_MRA_RXMONO;
}
channels = dev->tdm_slots;
}
mra |= MCHP_I2SMCC_MRA_NBCHAN(channels);
if (!frame_length)
frame_length = channels * MCHP_I2MCC_TDM_SLOT_WIDTH;
}
/*
* We must have the same burst size configured
* in the DMA transfer and in out IP
*/
mrb |= MCHP_I2SMCC_MRB_DMACHUNK(channels);
if (is_playback)
dev->playback.maxburst = 1 << (fls(channels) - 1);
else
dev->capture.maxburst = 1 << (fls(channels) - 1);
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S8:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_8_BITS;
break;
case SNDRV_PCM_FORMAT_S16_LE:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_16_BITS;
break;
case SNDRV_PCM_FORMAT_S18_3LE:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_18_BITS |
MCHP_I2SMCC_MRA_IWS;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_20_BITS |
MCHP_I2SMCC_MRA_IWS;
break;
case SNDRV_PCM_FORMAT_S24_3LE:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_24_BITS |
MCHP_I2SMCC_MRA_IWS;
break;
case SNDRV_PCM_FORMAT_S24_LE:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_24_BITS;
break;
case SNDRV_PCM_FORMAT_S32_LE:
mra |= MCHP_I2SMCC_MRA_DATALENGTH_32_BITS;
break;
default:
dev_err(dev->dev, "unsupported size/endianness for audio samples\n");
return -EINVAL;
}
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
if (set_divs) {
bclk_rate = frame_length * params_rate(params);
ret = mchp_i2s_mcc_config_divs(dev, bclk_rate, &mra,
&rate);
if (ret) {
dev_err(dev->dev,
"unable to configure the divisors: %d\n", ret);
return ret;
}
}
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
/* enable FIFO if available */
if (dev->soc->has_fifo)
mrb |= MCHP_I2SMCC_MRB_FIFOEN;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
/*
* If we are already running, the wanted setup must be
* the same with the one that's currently ongoing
*/
if (mchp_i2s_mcc_is_running(dev)) {
u32 mra_cur;
u32 mrb_cur;
regmap_read(dev->regmap, MCHP_I2SMCC_MRA, &mra_cur);
regmap_read(dev->regmap, MCHP_I2SMCC_MRB, &mrb_cur);
if (mra != mra_cur || mrb != mrb_cur)
return -EINVAL;
return 0;
}
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
if (mra & MCHP_I2SMCC_MRA_SRCCLK_GCLK && !dev->gclk_use) {
/* set the rate */
ret = clk_set_rate(dev->gclk, rate);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
if (ret) {
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
dev_err(dev->dev,
"unable to set rate %lu to GCLK: %d\n",
rate, ret);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
return ret;
}
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
ret = clk_prepare(dev->gclk);
if (ret < 0) {
dev_err(dev->dev, "unable to prepare GCLK: %d\n", ret);
return ret;
}
dev->gclk_use = 1;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
}
ASoC: mchp-i2s-mcc: Fix simultaneous capture and playback in master mode This controller supports capture and playback running at the same time, with the limitation that both capture and playback must be configured the same way (sample rate, sample format, number of channels, etc). For this, we have to assure that the configuration registers look the same when capture and playback are initiated. This patch fixes a bug in which the controller is in master mode and the hw_params() callback fails for the second audio stream. The fail occurs because the divisors are calculated after comparing the configuration registers for capture and playback. The fix consists in calculating the divisors before comparing the configuration registers. BCLK and LRC are then configured and started only if the controller is not already running. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:11 +08:00
/* Save the number of channels to know what interrupts to enable */
dev->channels = channels;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
ret = regmap_write(dev->regmap, MCHP_I2SMCC_MRA, mra);
ASoC: mchp-i2s-mcc: Fix unprepare of GCLK If hw_free() gets called after hw_params(), GCLK remains prepared, preventing further use of it. This patch fixes this by unpreparing the clock in hw_free() or if hw_params() gets an error. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-2-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:09 +08:00
if (ret < 0) {
if (dev->gclk_use) {
clk_unprepare(dev->gclk);
dev->gclk_use = 0;
}
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
return ret;
ASoC: mchp-i2s-mcc: Fix unprepare of GCLK If hw_free() gets called after hw_params(), GCLK remains prepared, preventing further use of it. This patch fixes this by unpreparing the clock in hw_free() or if hw_params() gets an error. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-2-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:09 +08:00
}
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
return regmap_write(dev->regmap, MCHP_I2SMCC_MRB, mrb);
}
static int mchp_i2s_mcc_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
long err;
if (is_playback) {
err = wait_event_interruptible_timeout(dev->wq_txrdy,
dev->tx_rdy,
msecs_to_jiffies(500));
ASoC: mchp-i2s-mcc: Wait for RX/TX RDY only if controller is running Since hw_free() can be called multiple times and not just after a stop trigger command, we should check whether the RX or TX ready interrupt was truly enabled previously. For this, we assure that the condition of the wait event is always true, except when RX/TX interrupts are enabled. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:10 +08:00
if (err == 0) {
dev_warn_once(dev->dev,
"Timeout waiting for Tx ready\n");
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo)
regmap_write(dev->regmap, MCHP_I2SMCC_IDRB,
MCHP_I2SMCC_INT_TXFFRDY);
else
regmap_write(dev->regmap, MCHP_I2SMCC_IDRA,
MCHP_I2SMCC_INT_TXRDY_MASK(dev->channels));
ASoC: mchp-i2s-mcc: Wait for RX/TX RDY only if controller is running Since hw_free() can be called multiple times and not just after a stop trigger command, we should check whether the RX or TX ready interrupt was truly enabled previously. For this, we assure that the condition of the wait event is always true, except when RX/TX interrupts are enabled. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:10 +08:00
dev->tx_rdy = 1;
}
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
} else {
err = wait_event_interruptible_timeout(dev->wq_rxrdy,
dev->rx_rdy,
msecs_to_jiffies(500));
ASoC: mchp-i2s-mcc: Wait for RX/TX RDY only if controller is running Since hw_free() can be called multiple times and not just after a stop trigger command, we should check whether the RX or TX ready interrupt was truly enabled previously. For this, we assure that the condition of the wait event is always true, except when RX/TX interrupts are enabled. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:10 +08:00
if (err == 0) {
dev_warn_once(dev->dev,
"Timeout waiting for Rx ready\n");
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo)
regmap_write(dev->regmap, MCHP_I2SMCC_IDRB,
MCHP_I2SMCC_INT_RXFFRDY);
else
regmap_write(dev->regmap, MCHP_I2SMCC_IDRA,
MCHP_I2SMCC_INT_RXRDY_MASK(dev->channels));
ASoC: mchp-i2s-mcc: Wait for RX/TX RDY only if controller is running Since hw_free() can be called multiple times and not just after a stop trigger command, we should check whether the RX or TX ready interrupt was truly enabled previously. For this, we assure that the condition of the wait event is always true, except when RX/TX interrupts are enabled. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:10 +08:00
dev->rx_rdy = 1;
}
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
}
if (!mchp_i2s_mcc_is_running(dev)) {
regmap_write(dev->regmap, MCHP_I2SMCC_CR, MCHP_I2SMCC_CR_CKDIS);
if (dev->gclk_running) {
ASoC: mchp-i2s-mcc: Fix unprepare of GCLK If hw_free() gets called after hw_params(), GCLK remains prepared, preventing further use of it. This patch fixes this by unpreparing the clock in hw_free() or if hw_params() gets an error. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-2-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:09 +08:00
clk_disable(dev->gclk);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
dev->gclk_running = 0;
}
ASoC: mchp-i2s-mcc: Fix unprepare of GCLK If hw_free() gets called after hw_params(), GCLK remains prepared, preventing further use of it. This patch fixes this by unpreparing the clock in hw_free() or if hw_params() gets an error. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-2-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:09 +08:00
if (dev->gclk_use) {
clk_unprepare(dev->gclk);
dev->gclk_use = 0;
}
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
}
return 0;
}
static int mchp_i2s_mcc_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
u32 cr = 0;
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
u32 iera = 0, ierb = 0;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
u32 sr;
int err;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (is_playback)
cr = MCHP_I2SMCC_CR_TXEN | MCHP_I2SMCC_CR_CKEN;
else
cr = MCHP_I2SMCC_CR_RXEN | MCHP_I2SMCC_CR_CKEN;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
regmap_read(dev->regmap, MCHP_I2SMCC_SR, &sr);
if (is_playback && (sr & MCHP_I2SMCC_SR_TXEN)) {
cr = MCHP_I2SMCC_CR_TXDIS;
dev->tx_rdy = 0;
/*
* Enable Tx Ready interrupts on all channels
* to assure all data is sent
*/
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo)
ierb = MCHP_I2SMCC_INT_TXFFRDY;
else
iera = MCHP_I2SMCC_INT_TXRDY_MASK(dev->channels);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
} else if (!is_playback && (sr & MCHP_I2SMCC_SR_RXEN)) {
cr = MCHP_I2SMCC_CR_RXDIS;
dev->rx_rdy = 0;
/*
* Enable Rx Ready interrupts on all channels
* to assure all data is received
*/
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo)
ierb = MCHP_I2SMCC_INT_RXFFRDY;
else
iera = MCHP_I2SMCC_INT_RXRDY_MASK(dev->channels);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
}
break;
default:
return -EINVAL;
}
if ((cr & MCHP_I2SMCC_CR_CKEN) && dev->gclk_use &&
!dev->gclk_running) {
err = clk_enable(dev->gclk);
if (err) {
dev_err_once(dev->dev, "failed to enable GCLK: %d\n",
err);
} else {
dev->gclk_running = 1;
}
}
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
if (dev->soc->has_fifo)
regmap_write(dev->regmap, MCHP_I2SMCC_IERB, ierb);
else
regmap_write(dev->regmap, MCHP_I2SMCC_IERA, iera);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
regmap_write(dev->regmap, MCHP_I2SMCC_CR, cr);
return 0;
}
static int mchp_i2s_mcc_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
/* Software reset the IP if it's not running */
if (!mchp_i2s_mcc_is_running(dev)) {
return regmap_write(dev->regmap, MCHP_I2SMCC_CR,
MCHP_I2SMCC_CR_SWRST);
}
return 0;
}
static const struct snd_soc_dai_ops mchp_i2s_mcc_dai_ops = {
.set_sysclk = mchp_i2s_mcc_set_sysclk,
.set_bclk_ratio = mchp_i2s_mcc_set_bclk_ratio,
.startup = mchp_i2s_mcc_startup,
.trigger = mchp_i2s_mcc_trigger,
.hw_params = mchp_i2s_mcc_hw_params,
.hw_free = mchp_i2s_mcc_hw_free,
.set_fmt = mchp_i2s_mcc_set_dai_fmt,
.set_tdm_slot = mchp_i2s_mcc_set_dai_tdm_slot,
};
static int mchp_i2s_mcc_dai_probe(struct snd_soc_dai *dai)
{
struct mchp_i2s_mcc_dev *dev = snd_soc_dai_get_drvdata(dai);
init_waitqueue_head(&dev->wq_txrdy);
init_waitqueue_head(&dev->wq_rxrdy);
ASoC: mchp-i2s-mcc: Wait for RX/TX RDY only if controller is running Since hw_free() can be called multiple times and not just after a stop trigger command, we should check whether the RX or TX ready interrupt was truly enabled previously. For this, we assure that the condition of the wait event is always true, except when RX/TX interrupts are enabled. Fixes: 7e0cdf545a55 ("ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller") Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20190820162411.24836-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-21 00:24:10 +08:00
dev->tx_rdy = 1;
dev->rx_rdy = 1;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
snd_soc_dai_init_dma_data(dai, &dev->playback, &dev->capture);
return 0;
}
#define MCHP_I2SMCC_RATES SNDRV_PCM_RATE_8000_192000
#define MCHP_I2SMCC_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S18_3LE | \
SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_driver mchp_i2s_mcc_dai = {
.probe = mchp_i2s_mcc_dai_probe,
.playback = {
.stream_name = "I2SMCC-Playback",
.channels_min = 1,
.channels_max = 8,
.rates = MCHP_I2SMCC_RATES,
.formats = MCHP_I2SMCC_FORMATS,
},
.capture = {
.stream_name = "I2SMCC-Capture",
.channels_min = 1,
.channels_max = 8,
.rates = MCHP_I2SMCC_RATES,
.formats = MCHP_I2SMCC_FORMATS,
},
.ops = &mchp_i2s_mcc_dai_ops,
ASoC: atmel: sync parameter naming (rate/sample_bits) This patch syncs naming rule. - xxx_rates; + xxx_rate; - xxx_samplebits; + xxx_sample_bits; Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87turiolio.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-01-15 12:53:13 +08:00
.symmetric_rate = 1,
.symmetric_sample_bits = 1,
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
.symmetric_channels = 1,
};
static const struct snd_soc_component_driver mchp_i2s_mcc_component = {
.name = "mchp-i2s-mcc",
};
#ifdef CONFIG_OF
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
static struct mchp_i2s_mcc_soc_data mchp_i2s_mcc_sam9x60 = {
.data_pin_pair_num = 1,
};
static struct mchp_i2s_mcc_soc_data mchp_i2s_mcc_sama7g5 = {
.data_pin_pair_num = 4,
ASoC: mchp-i2s-mcc: Add FIFOs support I2S-MCC found on SAMA7G5 includes 2 FIFOs (capture and playback). When FIFOs are enabled, bits I2SMCC_ISRA.TXLRDYx and I2SMCC_ISRA.TXRRDYx must not be used. Bits I2SMCC_ISRB.TXFFRDY and I2SMCC_ISRB.RXFFRDY must be used instead. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-7-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:04 +08:00
.has_fifo = true,
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
};
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
static const struct of_device_id mchp_i2s_mcc_dt_ids[] = {
{
.compatible = "microchip,sam9x60-i2smcc",
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
.data = &mchp_i2s_mcc_sam9x60,
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
},
ASoC: mchp-i2s-mcc: Add compatible for SAMA7G5 Microchip's new SAMA7G5 includes an updated I2S-MCC compatible with the previous version found on SAM9X60. The new controller includes 8 (4 * 2) input and output data pins for up to 8 channels for I2S and Left-Justified formats. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:00 +08:00
{
.compatible = "microchip,sama7g5-i2smcc",
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
.data = &mchp_i2s_mcc_sama7g5,
ASoC: mchp-i2s-mcc: Add compatible for SAMA7G5 Microchip's new SAMA7G5 includes an updated I2S-MCC compatible with the previous version found on SAM9X60. The new controller includes 8 (4 * 2) input and output data pins for up to 8 channels for I2S and Left-Justified formats. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-3-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:00 +08:00
},
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mchp_i2s_mcc_dt_ids);
#endif
ASoC: mchp-i2s-mcc: Add support to select TDM pins SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a single pair of pins for synchronous capture and playback, the controller needs to be told which of the pair is connected. This can be mentioned using the "microchip,tdm-data-pair" property from DT. The property is optional, useful only if TDM is used. If it's missing, DIN/DOUT 0 pins will be used by default. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-6-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:03 +08:00
static int mchp_i2s_mcc_soc_data_parse(struct platform_device *pdev,
struct mchp_i2s_mcc_dev *dev)
{
int err;
if (!dev->soc) {
dev_err(&pdev->dev, "failed to get soc data\n");
return -ENODEV;
}
if (dev->soc->data_pin_pair_num == 1)
return 0;
err = of_property_read_u8(pdev->dev.of_node, "microchip,tdm-data-pair",
&dev->tdm_data_pair);
if (err < 0 && err != -EINVAL) {
dev_err(&pdev->dev,
"bad property data for 'microchip,tdm-data-pair': %d",
err);
return err;
}
if (err == -EINVAL) {
dev_info(&pdev->dev,
"'microchip,tdm-data-pair' not found; assuming DIN/DOUT 0 for TDM\n");
dev->tdm_data_pair = 0;
} else {
if (dev->tdm_data_pair > dev->soc->data_pin_pair_num - 1) {
dev_err(&pdev->dev,
"invalid value for 'microchip,tdm-data-pair': %d\n",
dev->tdm_data_pair);
return -EINVAL;
}
dev_dbg(&pdev->dev, "TMD format on DIN/DOUT %d pins\n",
dev->tdm_data_pair);
}
return 0;
}
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
static int mchp_i2s_mcc_probe(struct platform_device *pdev)
{
struct mchp_i2s_mcc_dev *dev;
struct resource *mem;
struct regmap *regmap;
void __iomem *base;
u32 version;
int irq;
int err;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
ASoC: mchp-i2s-mcc: Use devm_platform_get_and_ioremap_resource() Use devm_platform_get_and_ioremap_resource() to simplify code. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20210611044256.3899583-1-yangyingliang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-11 12:42:56 +08:00
base = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
if (IS_ERR(base))
return PTR_ERR(base);
regmap = devm_regmap_init_mmio(&pdev->dev, base,
&mchp_i2s_mcc_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
err = devm_request_irq(&pdev->dev, irq, mchp_i2s_mcc_interrupt, 0,
dev_name(&pdev->dev), dev);
if (err)
return err;
dev->pclk = devm_clk_get(&pdev->dev, "pclk");
if (IS_ERR(dev->pclk)) {
err = PTR_ERR(dev->pclk);
dev_err(&pdev->dev,
"failed to get the peripheral clock: %d\n", err);
return err;
}
/* Get the optional generated clock */
dev->gclk = devm_clk_get(&pdev->dev, "gclk");
if (IS_ERR(dev->gclk)) {
if (PTR_ERR(dev->gclk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
dev_warn(&pdev->dev,
"generated clock not found: %d\n", err);
dev->gclk = NULL;
}
ASoC: mchp-i2s-mcc: Add multi-channel support for I2S and LEFT_J formats The latest I2S-MCC available in SAMA7G5 supports multi-channel for I2S and Left-Justified formats. For this, the new version uses 8 (4 * 2) input and output pins, with each pin being responsible for 2 channels. This sums up to a total of 8 channels for synchronous capture and playback. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-4-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:01 +08:00
dev->soc = of_device_get_match_data(&pdev->dev);
ASoC: mchp-i2s-mcc: Add support to select TDM pins SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a single pair of pins for synchronous capture and playback, the controller needs to be told which of the pair is connected. This can be mentioned using the "microchip,tdm-data-pair" property from DT. The property is optional, useful only if TDM is used. If it's missing, DIN/DOUT 0 pins will be used by default. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Link: https://lore.kernel.org/r/20210301170905.835091-6-codrin.ciubotariu@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-03-02 01:09:03 +08:00
err = mchp_i2s_mcc_soc_data_parse(pdev, dev);
if (err < 0)
return err;
ASoC: mchp-i2s-mcc: add driver for I2SC Multi-Channel Controller The Inter-IC Sound Controller (I2SMCC) provides a 5-wire, bidirectional, synchronous, digital audio link to external audio devices: I2SMCC_DIN, I2SMCC_DOUT, I2SMCC_WS, I2SMCC_CK, and I2SMCC_MCK pins. The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and supports a Time Division Multiplexed (TDM) interface with external multi-channel audio codecs. The I2SMCC consists of a receiver, a transmitter and a common clock generator that can be enabled separately to provide Master, Slave or Controller modes with receiver and/or transmitter active. DMA Controller channels, separate for the receiver and for the transmitter, allow a continuous high bit rate data transfer without processor intervention to the following: - Audio CODECs in Master, Slave, or Controller mode - Stereo DAC or ADC through a dedicated I2S serial interface - Multi-channel or multiple stereo DACs or ADCs, using the TDM format This IP is embedded in Microchip's new sam9x60 SoC. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-05 19:26:45 +08:00
dev->dev = &pdev->dev;
dev->regmap = regmap;
platform_set_drvdata(pdev, dev);
err = clk_prepare_enable(dev->pclk);
if (err) {
dev_err(&pdev->dev,
"failed to enable the peripheral clock: %d\n", err);
return err;
}
err = devm_snd_soc_register_component(&pdev->dev,
&mchp_i2s_mcc_component,
&mchp_i2s_mcc_dai, 1);
if (err) {
dev_err(&pdev->dev, "failed to register DAI: %d\n", err);
clk_disable_unprepare(dev->pclk);
return err;
}
dev->playback.addr = (dma_addr_t)mem->start + MCHP_I2SMCC_THR;
dev->capture.addr = (dma_addr_t)mem->start + MCHP_I2SMCC_RHR;
err = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
if (err) {
dev_err(&pdev->dev, "failed to register PCM: %d\n", err);
clk_disable_unprepare(dev->pclk);
return err;
}
/* Get IP version. */
regmap_read(dev->regmap, MCHP_I2SMCC_VERSION, &version);
dev_info(&pdev->dev, "hw version: %#lx\n",
version & MCHP_I2SMCC_VERSION_MASK);
return 0;
}
static int mchp_i2s_mcc_remove(struct platform_device *pdev)
{
struct mchp_i2s_mcc_dev *dev = platform_get_drvdata(pdev);
clk_disable_unprepare(dev->pclk);
return 0;
}
static struct platform_driver mchp_i2s_mcc_driver = {
.driver = {
.name = "mchp_i2s_mcc",
.of_match_table = of_match_ptr(mchp_i2s_mcc_dt_ids),
},
.probe = mchp_i2s_mcc_probe,
.remove = mchp_i2s_mcc_remove,
};
module_platform_driver(mchp_i2s_mcc_driver);
MODULE_DESCRIPTION("Microchip I2S Multi-Channel Controller driver");
MODULE_AUTHOR("Codrin Ciubotariu <codrin.ciubotariu@microchip.com>");
MODULE_LICENSE("GPL v2");
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