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25d27c4f68
Currently, pcm512x driver supports only I2S data format. This commit adds RJ, LJ, DSP_A and DSP_B as well. I don't expect regression WRT existing sound cards, because: * default value in corresponding register of pcm512x codec is 0 == I2S * existing in-tree sound cards with pcm512x codec are configured for I2S * i don't see how existing off-tree sound cards with pcm512x codec could be configured differently - it would not work * tested explicitly, that there is no regression with Raspberry Pi + sound card `sound/soc/bcm/hifiberry_dacplus.c` Signed-off-by: Kirill Marinushkin <kmarinushkin@birdec.com> Cc: Mark Brown <broonie@kernel.org> Cc: Takashi Iwai <tiwai@suse.com> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Matthias Reichl <hias@horus.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Link: https://lore.kernel.org/r/20201115122306.18164-5-kmarinushkin@birdec.com Signed-off-by: Mark Brown <broonie@kernel.org>
1769 lines
46 KiB
C
1769 lines
46 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for the PCM512x CODECs
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*
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* Author: Mark Brown <broonie@kernel.org>
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* Copyright 2014 Linaro Ltd
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/clk.h>
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#include <linux/kernel.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/gcd.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/pcm_params.h>
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#include <sound/tlv.h>
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#include "pcm512x.h"
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#define PCM512x_NUM_SUPPLIES 3
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static const char * const pcm512x_supply_names[PCM512x_NUM_SUPPLIES] = {
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"AVDD",
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"DVDD",
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"CPVDD",
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};
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struct pcm512x_priv {
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struct regmap *regmap;
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struct clk *sclk;
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struct regulator_bulk_data supplies[PCM512x_NUM_SUPPLIES];
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struct notifier_block supply_nb[PCM512x_NUM_SUPPLIES];
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int fmt;
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int pll_in;
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int pll_out;
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int pll_r;
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int pll_j;
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int pll_d;
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int pll_p;
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unsigned long real_pll;
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unsigned long overclock_pll;
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unsigned long overclock_dac;
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unsigned long overclock_dsp;
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int mute;
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struct mutex mutex;
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unsigned int bclk_ratio;
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};
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/*
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* We can't use the same notifier block for more than one supply and
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* there's no way I can see to get from a callback to the caller
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* except container_of().
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*/
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#define PCM512x_REGULATOR_EVENT(n) \
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static int pcm512x_regulator_event_##n(struct notifier_block *nb, \
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unsigned long event, void *data) \
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{ \
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struct pcm512x_priv *pcm512x = container_of(nb, struct pcm512x_priv, \
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supply_nb[n]); \
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if (event & REGULATOR_EVENT_DISABLE) { \
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regcache_mark_dirty(pcm512x->regmap); \
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regcache_cache_only(pcm512x->regmap, true); \
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} \
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return 0; \
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}
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PCM512x_REGULATOR_EVENT(0)
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PCM512x_REGULATOR_EVENT(1)
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PCM512x_REGULATOR_EVENT(2)
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static const struct reg_default pcm512x_reg_defaults[] = {
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{ PCM512x_RESET, 0x00 },
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{ PCM512x_POWER, 0x00 },
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{ PCM512x_MUTE, 0x00 },
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{ PCM512x_DSP, 0x00 },
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{ PCM512x_PLL_REF, 0x00 },
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{ PCM512x_DAC_REF, 0x00 },
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{ PCM512x_DAC_ROUTING, 0x11 },
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{ PCM512x_DSP_PROGRAM, 0x01 },
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{ PCM512x_CLKDET, 0x00 },
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{ PCM512x_AUTO_MUTE, 0x00 },
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{ PCM512x_ERROR_DETECT, 0x00 },
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{ PCM512x_DIGITAL_VOLUME_1, 0x00 },
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{ PCM512x_DIGITAL_VOLUME_2, 0x30 },
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{ PCM512x_DIGITAL_VOLUME_3, 0x30 },
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{ PCM512x_DIGITAL_MUTE_1, 0x22 },
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{ PCM512x_DIGITAL_MUTE_2, 0x00 },
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{ PCM512x_DIGITAL_MUTE_3, 0x07 },
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{ PCM512x_OUTPUT_AMPLITUDE, 0x00 },
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{ PCM512x_ANALOG_GAIN_CTRL, 0x00 },
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{ PCM512x_UNDERVOLTAGE_PROT, 0x00 },
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{ PCM512x_ANALOG_MUTE_CTRL, 0x00 },
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{ PCM512x_ANALOG_GAIN_BOOST, 0x00 },
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{ PCM512x_VCOM_CTRL_1, 0x00 },
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{ PCM512x_VCOM_CTRL_2, 0x01 },
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{ PCM512x_BCLK_LRCLK_CFG, 0x00 },
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{ PCM512x_MASTER_MODE, 0x7c },
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{ PCM512x_GPIO_DACIN, 0x00 },
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{ PCM512x_GPIO_PLLIN, 0x00 },
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{ PCM512x_SYNCHRONIZE, 0x10 },
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{ PCM512x_PLL_COEFF_0, 0x00 },
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{ PCM512x_PLL_COEFF_1, 0x00 },
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{ PCM512x_PLL_COEFF_2, 0x00 },
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{ PCM512x_PLL_COEFF_3, 0x00 },
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{ PCM512x_PLL_COEFF_4, 0x00 },
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{ PCM512x_DSP_CLKDIV, 0x00 },
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{ PCM512x_DAC_CLKDIV, 0x00 },
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{ PCM512x_NCP_CLKDIV, 0x00 },
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{ PCM512x_OSR_CLKDIV, 0x00 },
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{ PCM512x_MASTER_CLKDIV_1, 0x00 },
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{ PCM512x_MASTER_CLKDIV_2, 0x00 },
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{ PCM512x_FS_SPEED_MODE, 0x00 },
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{ PCM512x_IDAC_1, 0x01 },
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{ PCM512x_IDAC_2, 0x00 },
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};
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static bool pcm512x_readable(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case PCM512x_RESET:
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case PCM512x_POWER:
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case PCM512x_MUTE:
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case PCM512x_PLL_EN:
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case PCM512x_SPI_MISO_FUNCTION:
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case PCM512x_DSP:
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case PCM512x_GPIO_EN:
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case PCM512x_BCLK_LRCLK_CFG:
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case PCM512x_DSP_GPIO_INPUT:
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case PCM512x_MASTER_MODE:
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case PCM512x_PLL_REF:
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case PCM512x_DAC_REF:
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case PCM512x_GPIO_DACIN:
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case PCM512x_GPIO_PLLIN:
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case PCM512x_SYNCHRONIZE:
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case PCM512x_PLL_COEFF_0:
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case PCM512x_PLL_COEFF_1:
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case PCM512x_PLL_COEFF_2:
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case PCM512x_PLL_COEFF_3:
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case PCM512x_PLL_COEFF_4:
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case PCM512x_DSP_CLKDIV:
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case PCM512x_DAC_CLKDIV:
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case PCM512x_NCP_CLKDIV:
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case PCM512x_OSR_CLKDIV:
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case PCM512x_MASTER_CLKDIV_1:
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case PCM512x_MASTER_CLKDIV_2:
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case PCM512x_FS_SPEED_MODE:
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case PCM512x_IDAC_1:
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case PCM512x_IDAC_2:
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case PCM512x_ERROR_DETECT:
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case PCM512x_I2S_1:
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case PCM512x_I2S_2:
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case PCM512x_DAC_ROUTING:
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case PCM512x_DSP_PROGRAM:
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case PCM512x_CLKDET:
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case PCM512x_AUTO_MUTE:
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case PCM512x_DIGITAL_VOLUME_1:
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case PCM512x_DIGITAL_VOLUME_2:
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case PCM512x_DIGITAL_VOLUME_3:
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case PCM512x_DIGITAL_MUTE_1:
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case PCM512x_DIGITAL_MUTE_2:
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case PCM512x_DIGITAL_MUTE_3:
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case PCM512x_GPIO_OUTPUT_1:
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case PCM512x_GPIO_OUTPUT_2:
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case PCM512x_GPIO_OUTPUT_3:
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case PCM512x_GPIO_OUTPUT_4:
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case PCM512x_GPIO_OUTPUT_5:
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case PCM512x_GPIO_OUTPUT_6:
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case PCM512x_GPIO_CONTROL_1:
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case PCM512x_GPIO_CONTROL_2:
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case PCM512x_OVERFLOW:
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case PCM512x_RATE_DET_1:
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case PCM512x_RATE_DET_2:
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case PCM512x_RATE_DET_3:
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case PCM512x_RATE_DET_4:
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case PCM512x_CLOCK_STATUS:
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case PCM512x_ANALOG_MUTE_DET:
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case PCM512x_GPIN:
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case PCM512x_DIGITAL_MUTE_DET:
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case PCM512x_OUTPUT_AMPLITUDE:
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case PCM512x_ANALOG_GAIN_CTRL:
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case PCM512x_UNDERVOLTAGE_PROT:
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case PCM512x_ANALOG_MUTE_CTRL:
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case PCM512x_ANALOG_GAIN_BOOST:
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case PCM512x_VCOM_CTRL_1:
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case PCM512x_VCOM_CTRL_2:
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case PCM512x_CRAM_CTRL:
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case PCM512x_FLEX_A:
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case PCM512x_FLEX_B:
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return true;
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default:
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/* There are 256 raw register addresses */
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return reg < 0xff;
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}
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}
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static bool pcm512x_volatile(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case PCM512x_PLL_EN:
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case PCM512x_OVERFLOW:
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case PCM512x_RATE_DET_1:
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case PCM512x_RATE_DET_2:
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case PCM512x_RATE_DET_3:
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case PCM512x_RATE_DET_4:
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case PCM512x_CLOCK_STATUS:
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case PCM512x_ANALOG_MUTE_DET:
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case PCM512x_GPIN:
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case PCM512x_DIGITAL_MUTE_DET:
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case PCM512x_CRAM_CTRL:
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return true;
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default:
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/* There are 256 raw register addresses */
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return reg < 0xff;
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}
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}
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static int pcm512x_overclock_pll_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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ucontrol->value.integer.value[0] = pcm512x->overclock_pll;
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return 0;
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}
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static int pcm512x_overclock_pll_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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switch (snd_soc_component_get_bias_level(component)) {
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case SND_SOC_BIAS_OFF:
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case SND_SOC_BIAS_STANDBY:
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break;
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default:
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return -EBUSY;
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}
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pcm512x->overclock_pll = ucontrol->value.integer.value[0];
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return 0;
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}
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static int pcm512x_overclock_dsp_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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ucontrol->value.integer.value[0] = pcm512x->overclock_dsp;
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return 0;
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}
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static int pcm512x_overclock_dsp_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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switch (snd_soc_component_get_bias_level(component)) {
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case SND_SOC_BIAS_OFF:
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case SND_SOC_BIAS_STANDBY:
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break;
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default:
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return -EBUSY;
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}
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pcm512x->overclock_dsp = ucontrol->value.integer.value[0];
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return 0;
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}
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static int pcm512x_overclock_dac_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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ucontrol->value.integer.value[0] = pcm512x->overclock_dac;
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return 0;
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}
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static int pcm512x_overclock_dac_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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switch (snd_soc_component_get_bias_level(component)) {
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case SND_SOC_BIAS_OFF:
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case SND_SOC_BIAS_STANDBY:
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break;
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default:
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return -EBUSY;
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}
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pcm512x->overclock_dac = ucontrol->value.integer.value[0];
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return 0;
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}
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static const DECLARE_TLV_DB_SCALE(digital_tlv, -10350, 50, 1);
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static const DECLARE_TLV_DB_SCALE(analog_tlv, -600, 600, 0);
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static const DECLARE_TLV_DB_SCALE(boost_tlv, 0, 80, 0);
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static const char * const pcm512x_dsp_program_texts[] = {
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"FIR interpolation with de-emphasis",
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"Low latency IIR with de-emphasis",
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"High attenuation with de-emphasis",
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"Fixed process flow",
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"Ringing-less low latency FIR",
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};
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static const unsigned int pcm512x_dsp_program_values[] = {
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1,
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2,
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3,
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5,
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7,
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};
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static SOC_VALUE_ENUM_SINGLE_DECL(pcm512x_dsp_program,
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PCM512x_DSP_PROGRAM, 0, 0x1f,
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pcm512x_dsp_program_texts,
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pcm512x_dsp_program_values);
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static const char * const pcm512x_clk_missing_text[] = {
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"1s", "2s", "3s", "4s", "5s", "6s", "7s", "8s"
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};
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static const struct soc_enum pcm512x_clk_missing =
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SOC_ENUM_SINGLE(PCM512x_CLKDET, 0, 8, pcm512x_clk_missing_text);
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static const char * const pcm512x_autom_text[] = {
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"21ms", "106ms", "213ms", "533ms", "1.07s", "2.13s", "5.33s", "10.66s"
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};
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static const struct soc_enum pcm512x_autom_l =
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SOC_ENUM_SINGLE(PCM512x_AUTO_MUTE, PCM512x_ATML_SHIFT, 8,
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pcm512x_autom_text);
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static const struct soc_enum pcm512x_autom_r =
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SOC_ENUM_SINGLE(PCM512x_AUTO_MUTE, PCM512x_ATMR_SHIFT, 8,
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pcm512x_autom_text);
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static const char * const pcm512x_ramp_rate_text[] = {
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"1 sample/update", "2 samples/update", "4 samples/update",
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"Immediate"
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};
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static const struct soc_enum pcm512x_vndf =
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SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNDF_SHIFT, 4,
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pcm512x_ramp_rate_text);
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static const struct soc_enum pcm512x_vnuf =
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SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNUF_SHIFT, 4,
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pcm512x_ramp_rate_text);
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static const struct soc_enum pcm512x_vedf =
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SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDF_SHIFT, 4,
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pcm512x_ramp_rate_text);
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static const char * const pcm512x_ramp_step_text[] = {
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"4dB/step", "2dB/step", "1dB/step", "0.5dB/step"
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};
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static const struct soc_enum pcm512x_vnds =
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SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNDS_SHIFT, 4,
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pcm512x_ramp_step_text);
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static const struct soc_enum pcm512x_vnus =
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SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNUS_SHIFT, 4,
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pcm512x_ramp_step_text);
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static const struct soc_enum pcm512x_veds =
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SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDS_SHIFT, 4,
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pcm512x_ramp_step_text);
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static int pcm512x_update_mute(struct pcm512x_priv *pcm512x)
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{
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return regmap_update_bits(
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pcm512x->regmap, PCM512x_MUTE, PCM512x_RQML | PCM512x_RQMR,
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(!!(pcm512x->mute & 0x5) << PCM512x_RQML_SHIFT)
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| (!!(pcm512x->mute & 0x3) << PCM512x_RQMR_SHIFT));
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}
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static int pcm512x_digital_playback_switch_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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mutex_lock(&pcm512x->mutex);
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ucontrol->value.integer.value[0] = !(pcm512x->mute & 0x4);
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ucontrol->value.integer.value[1] = !(pcm512x->mute & 0x2);
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mutex_unlock(&pcm512x->mutex);
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return 0;
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}
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static int pcm512x_digital_playback_switch_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
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struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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int ret, changed = 0;
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mutex_lock(&pcm512x->mutex);
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if ((pcm512x->mute & 0x4) == (ucontrol->value.integer.value[0] << 2)) {
|
|
pcm512x->mute ^= 0x4;
|
|
changed = 1;
|
|
}
|
|
if ((pcm512x->mute & 0x2) == (ucontrol->value.integer.value[1] << 1)) {
|
|
pcm512x->mute ^= 0x2;
|
|
changed = 1;
|
|
}
|
|
|
|
if (changed) {
|
|
ret = pcm512x_update_mute(pcm512x);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to update digital mute: %d\n", ret);
|
|
mutex_unlock(&pcm512x->mutex);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&pcm512x->mutex);
|
|
|
|
return changed;
|
|
}
|
|
|
|
static const struct snd_kcontrol_new pcm512x_controls[] = {
|
|
SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
|
|
PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
|
|
SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
|
|
PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
|
|
SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
|
|
PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Digital Playback Switch",
|
|
.index = 0,
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
|
|
.info = snd_ctl_boolean_stereo_info,
|
|
.get = pcm512x_digital_playback_switch_get,
|
|
.put = pcm512x_digital_playback_switch_put
|
|
},
|
|
|
|
SOC_SINGLE("Deemphasis Switch", PCM512x_DSP, PCM512x_DEMP_SHIFT, 1, 1),
|
|
SOC_ENUM("DSP Program", pcm512x_dsp_program),
|
|
|
|
SOC_ENUM("Clock Missing Period", pcm512x_clk_missing),
|
|
SOC_ENUM("Auto Mute Time Left", pcm512x_autom_l),
|
|
SOC_ENUM("Auto Mute Time Right", pcm512x_autom_r),
|
|
SOC_SINGLE("Auto Mute Mono Switch", PCM512x_DIGITAL_MUTE_3,
|
|
PCM512x_ACTL_SHIFT, 1, 0),
|
|
SOC_DOUBLE("Auto Mute Switch", PCM512x_DIGITAL_MUTE_3, PCM512x_AMLE_SHIFT,
|
|
PCM512x_AMRE_SHIFT, 1, 0),
|
|
|
|
SOC_ENUM("Volume Ramp Down Rate", pcm512x_vndf),
|
|
SOC_ENUM("Volume Ramp Down Step", pcm512x_vnds),
|
|
SOC_ENUM("Volume Ramp Up Rate", pcm512x_vnuf),
|
|
SOC_ENUM("Volume Ramp Up Step", pcm512x_vnus),
|
|
SOC_ENUM("Volume Ramp Down Emergency Rate", pcm512x_vedf),
|
|
SOC_ENUM("Volume Ramp Down Emergency Step", pcm512x_veds),
|
|
|
|
SOC_SINGLE_EXT("Max Overclock PLL", SND_SOC_NOPM, 0, 20, 0,
|
|
pcm512x_overclock_pll_get, pcm512x_overclock_pll_put),
|
|
SOC_SINGLE_EXT("Max Overclock DSP", SND_SOC_NOPM, 0, 40, 0,
|
|
pcm512x_overclock_dsp_get, pcm512x_overclock_dsp_put),
|
|
SOC_SINGLE_EXT("Max Overclock DAC", SND_SOC_NOPM, 0, 40, 0,
|
|
pcm512x_overclock_dac_get, pcm512x_overclock_dac_put),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_widget pcm512x_dapm_widgets[] = {
|
|
SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
|
|
SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
|
|
|
|
SND_SOC_DAPM_OUTPUT("OUTL"),
|
|
SND_SOC_DAPM_OUTPUT("OUTR"),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route pcm512x_dapm_routes[] = {
|
|
{ "DACL", NULL, "Playback" },
|
|
{ "DACR", NULL, "Playback" },
|
|
|
|
{ "OUTL", NULL, "DACL" },
|
|
{ "OUTR", NULL, "DACR" },
|
|
};
|
|
|
|
static unsigned long pcm512x_pll_max(struct pcm512x_priv *pcm512x)
|
|
{
|
|
return 25000000 + 25000000 * pcm512x->overclock_pll / 100;
|
|
}
|
|
|
|
static unsigned long pcm512x_dsp_max(struct pcm512x_priv *pcm512x)
|
|
{
|
|
return 50000000 + 50000000 * pcm512x->overclock_dsp / 100;
|
|
}
|
|
|
|
static unsigned long pcm512x_dac_max(struct pcm512x_priv *pcm512x,
|
|
unsigned long rate)
|
|
{
|
|
return rate + rate * pcm512x->overclock_dac / 100;
|
|
}
|
|
|
|
static unsigned long pcm512x_sck_max(struct pcm512x_priv *pcm512x)
|
|
{
|
|
if (!pcm512x->pll_out)
|
|
return 25000000;
|
|
return pcm512x_pll_max(pcm512x);
|
|
}
|
|
|
|
static unsigned long pcm512x_ncp_target(struct pcm512x_priv *pcm512x,
|
|
unsigned long dac_rate)
|
|
{
|
|
/*
|
|
* If the DAC is not actually overclocked, use the good old
|
|
* NCP target rate...
|
|
*/
|
|
if (dac_rate <= 6144000)
|
|
return 1536000;
|
|
/*
|
|
* ...but if the DAC is in fact overclocked, bump the NCP target
|
|
* rate to get the recommended dividers even when overclocking.
|
|
*/
|
|
return pcm512x_dac_max(pcm512x, 1536000);
|
|
}
|
|
|
|
static const u32 pcm512x_dai_rates[] = {
|
|
8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000,
|
|
88200, 96000, 176400, 192000, 384000,
|
|
};
|
|
|
|
static const struct snd_pcm_hw_constraint_list constraints_slave = {
|
|
.count = ARRAY_SIZE(pcm512x_dai_rates),
|
|
.list = pcm512x_dai_rates,
|
|
};
|
|
|
|
static int pcm512x_hw_rule_rate(struct snd_pcm_hw_params *params,
|
|
struct snd_pcm_hw_rule *rule)
|
|
{
|
|
struct pcm512x_priv *pcm512x = rule->private;
|
|
struct snd_interval ranges[2];
|
|
int frame_size;
|
|
|
|
frame_size = snd_soc_params_to_frame_size(params);
|
|
if (frame_size < 0)
|
|
return frame_size;
|
|
|
|
switch (frame_size) {
|
|
case 32:
|
|
/* No hole when the frame size is 32. */
|
|
return 0;
|
|
case 48:
|
|
case 64:
|
|
/* There is only one hole in the range of supported
|
|
* rates, but it moves with the frame size.
|
|
*/
|
|
memset(ranges, 0, sizeof(ranges));
|
|
ranges[0].min = 8000;
|
|
ranges[0].max = pcm512x_sck_max(pcm512x) / frame_size / 2;
|
|
ranges[1].min = DIV_ROUND_UP(16000000, frame_size);
|
|
ranges[1].max = 384000;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return snd_interval_ranges(hw_param_interval(params, rule->var),
|
|
ARRAY_SIZE(ranges), ranges, 0);
|
|
}
|
|
|
|
static int pcm512x_dai_startup_master(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
struct device *dev = dai->dev;
|
|
struct snd_pcm_hw_constraint_ratnums *constraints_no_pll;
|
|
struct snd_ratnum *rats_no_pll;
|
|
|
|
if (IS_ERR(pcm512x->sclk)) {
|
|
dev_err(dev, "Need SCLK for master mode: %ld\n",
|
|
PTR_ERR(pcm512x->sclk));
|
|
return PTR_ERR(pcm512x->sclk);
|
|
}
|
|
|
|
if (pcm512x->pll_out)
|
|
return snd_pcm_hw_rule_add(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
|
pcm512x_hw_rule_rate,
|
|
pcm512x,
|
|
SNDRV_PCM_HW_PARAM_FRAME_BITS,
|
|
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
|
|
|
|
constraints_no_pll = devm_kzalloc(dev, sizeof(*constraints_no_pll),
|
|
GFP_KERNEL);
|
|
if (!constraints_no_pll)
|
|
return -ENOMEM;
|
|
constraints_no_pll->nrats = 1;
|
|
rats_no_pll = devm_kzalloc(dev, sizeof(*rats_no_pll), GFP_KERNEL);
|
|
if (!rats_no_pll)
|
|
return -ENOMEM;
|
|
constraints_no_pll->rats = rats_no_pll;
|
|
rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
|
|
rats_no_pll->den_min = 1;
|
|
rats_no_pll->den_max = 128;
|
|
rats_no_pll->den_step = 1;
|
|
|
|
return snd_pcm_hw_constraint_ratnums(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
|
constraints_no_pll);
|
|
}
|
|
|
|
static int pcm512x_dai_startup_slave(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
struct device *dev = dai->dev;
|
|
struct regmap *regmap = pcm512x->regmap;
|
|
|
|
if (IS_ERR(pcm512x->sclk)) {
|
|
dev_info(dev, "No SCLK, using BCLK: %ld\n",
|
|
PTR_ERR(pcm512x->sclk));
|
|
|
|
/* Disable reporting of missing SCLK as an error */
|
|
regmap_update_bits(regmap, PCM512x_ERROR_DETECT,
|
|
PCM512x_IDCH, PCM512x_IDCH);
|
|
|
|
/* Switch PLL input to BCLK */
|
|
regmap_update_bits(regmap, PCM512x_PLL_REF,
|
|
PCM512x_SREF, PCM512x_SREF_BCK);
|
|
}
|
|
|
|
return snd_pcm_hw_constraint_list(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
|
&constraints_slave);
|
|
}
|
|
|
|
static int pcm512x_dai_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
|
|
switch (pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
return pcm512x_dai_startup_master(substream, dai);
|
|
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
return pcm512x_dai_startup_slave(substream, dai);
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int pcm512x_set_bias_level(struct snd_soc_component *component,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct pcm512x_priv *pcm512x = dev_get_drvdata(component->dev);
|
|
int ret;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
case SND_SOC_BIAS_PREPARE:
|
|
break;
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
|
|
PCM512x_RQST, 0);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to remove standby: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
break;
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
|
|
PCM512x_RQST, PCM512x_RQST);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to request standby: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long pcm512x_find_sck(struct snd_soc_dai *dai,
|
|
unsigned long bclk_rate)
|
|
{
|
|
struct device *dev = dai->dev;
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
unsigned long sck_rate;
|
|
int pow2;
|
|
|
|
/* 64 MHz <= pll_rate <= 100 MHz, VREF mode */
|
|
/* 16 MHz <= sck_rate <= 25 MHz, VREF mode */
|
|
|
|
/* select sck_rate as a multiple of bclk_rate but still with
|
|
* as many factors of 2 as possible, as that makes it easier
|
|
* to find a fast DAC rate
|
|
*/
|
|
pow2 = 1 << fls((pcm512x_pll_max(pcm512x) - 16000000) / bclk_rate);
|
|
for (; pow2; pow2 >>= 1) {
|
|
sck_rate = rounddown(pcm512x_pll_max(pcm512x),
|
|
bclk_rate * pow2);
|
|
if (sck_rate >= 16000000)
|
|
break;
|
|
}
|
|
if (!pow2) {
|
|
dev_err(dev, "Impossible to generate a suitable SCK\n");
|
|
return 0;
|
|
}
|
|
|
|
dev_dbg(dev, "sck_rate %lu\n", sck_rate);
|
|
return sck_rate;
|
|
}
|
|
|
|
/* pll_rate = pllin_rate * R * J.D / P
|
|
* 1 <= R <= 16
|
|
* 1 <= J <= 63
|
|
* 0 <= D <= 9999
|
|
* 1 <= P <= 15
|
|
* 64 MHz <= pll_rate <= 100 MHz
|
|
* if D == 0
|
|
* 1 MHz <= pllin_rate / P <= 20 MHz
|
|
* else if D > 0
|
|
* 6.667 MHz <= pllin_rate / P <= 20 MHz
|
|
* 4 <= J <= 11
|
|
* R = 1
|
|
*/
|
|
static int pcm512x_find_pll_coeff(struct snd_soc_dai *dai,
|
|
unsigned long pllin_rate,
|
|
unsigned long pll_rate)
|
|
{
|
|
struct device *dev = dai->dev;
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
unsigned long common;
|
|
int R, J, D, P;
|
|
unsigned long K; /* 10000 * J.D */
|
|
unsigned long num;
|
|
unsigned long den;
|
|
|
|
common = gcd(pll_rate, pllin_rate);
|
|
dev_dbg(dev, "pll %lu pllin %lu common %lu\n",
|
|
pll_rate, pllin_rate, common);
|
|
num = pll_rate / common;
|
|
den = pllin_rate / common;
|
|
|
|
/* pllin_rate / P (or here, den) cannot be greater than 20 MHz */
|
|
if (pllin_rate / den > 20000000 && num < 8) {
|
|
num *= DIV_ROUND_UP(pllin_rate / den, 20000000);
|
|
den *= DIV_ROUND_UP(pllin_rate / den, 20000000);
|
|
}
|
|
dev_dbg(dev, "num / den = %lu / %lu\n", num, den);
|
|
|
|
P = den;
|
|
if (den <= 15 && num <= 16 * 63
|
|
&& 1000000 <= pllin_rate / P && pllin_rate / P <= 20000000) {
|
|
/* Try the case with D = 0 */
|
|
D = 0;
|
|
/* factor 'num' into J and R, such that R <= 16 and J <= 63 */
|
|
for (R = 16; R; R--) {
|
|
if (num % R)
|
|
continue;
|
|
J = num / R;
|
|
if (J == 0 || J > 63)
|
|
continue;
|
|
|
|
dev_dbg(dev, "R * J / P = %d * %d / %d\n", R, J, P);
|
|
pcm512x->real_pll = pll_rate;
|
|
goto done;
|
|
}
|
|
/* no luck */
|
|
}
|
|
|
|
R = 1;
|
|
|
|
if (num > 0xffffffffUL / 10000)
|
|
goto fallback;
|
|
|
|
/* Try to find an exact pll_rate using the D > 0 case */
|
|
common = gcd(10000 * num, den);
|
|
num = 10000 * num / common;
|
|
den /= common;
|
|
dev_dbg(dev, "num %lu den %lu common %lu\n", num, den, common);
|
|
|
|
for (P = den; P <= 15; P++) {
|
|
if (pllin_rate / P < 6667000 || 200000000 < pllin_rate / P)
|
|
continue;
|
|
if (num * P % den)
|
|
continue;
|
|
K = num * P / den;
|
|
/* J == 12 is ok if D == 0 */
|
|
if (K < 40000 || K > 120000)
|
|
continue;
|
|
|
|
J = K / 10000;
|
|
D = K % 10000;
|
|
dev_dbg(dev, "J.D / P = %d.%04d / %d\n", J, D, P);
|
|
pcm512x->real_pll = pll_rate;
|
|
goto done;
|
|
}
|
|
|
|
/* Fall back to an approximate pll_rate */
|
|
|
|
fallback:
|
|
/* find smallest possible P */
|
|
P = DIV_ROUND_UP(pllin_rate, 20000000);
|
|
if (!P)
|
|
P = 1;
|
|
else if (P > 15) {
|
|
dev_err(dev, "Need a slower clock as pll-input\n");
|
|
return -EINVAL;
|
|
}
|
|
if (pllin_rate / P < 6667000) {
|
|
dev_err(dev, "Need a faster clock as pll-input\n");
|
|
return -EINVAL;
|
|
}
|
|
K = DIV_ROUND_CLOSEST_ULL(10000ULL * pll_rate * P, pllin_rate);
|
|
if (K < 40000)
|
|
K = 40000;
|
|
/* J == 12 is ok if D == 0 */
|
|
if (K > 120000)
|
|
K = 120000;
|
|
J = K / 10000;
|
|
D = K % 10000;
|
|
dev_dbg(dev, "J.D / P ~ %d.%04d / %d\n", J, D, P);
|
|
pcm512x->real_pll = DIV_ROUND_DOWN_ULL((u64)K * pllin_rate, 10000 * P);
|
|
|
|
done:
|
|
pcm512x->pll_r = R;
|
|
pcm512x->pll_j = J;
|
|
pcm512x->pll_d = D;
|
|
pcm512x->pll_p = P;
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long pcm512x_pllin_dac_rate(struct snd_soc_dai *dai,
|
|
unsigned long osr_rate,
|
|
unsigned long pllin_rate)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
unsigned long dac_rate;
|
|
|
|
if (!pcm512x->pll_out)
|
|
return 0; /* no PLL to bypass, force SCK as DAC input */
|
|
|
|
if (pllin_rate % osr_rate)
|
|
return 0; /* futile, quit early */
|
|
|
|
/* run DAC no faster than 6144000 Hz */
|
|
for (dac_rate = rounddown(pcm512x_dac_max(pcm512x, 6144000), osr_rate);
|
|
dac_rate;
|
|
dac_rate -= osr_rate) {
|
|
|
|
if (pllin_rate / dac_rate > 128)
|
|
return 0; /* DAC divider would be too big */
|
|
|
|
if (!(pllin_rate % dac_rate))
|
|
return dac_rate;
|
|
|
|
dac_rate -= osr_rate;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm512x_set_dividers(struct snd_soc_dai *dai,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct device *dev = dai->dev;
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
unsigned long pllin_rate = 0;
|
|
unsigned long pll_rate;
|
|
unsigned long sck_rate;
|
|
unsigned long mck_rate;
|
|
unsigned long bclk_rate;
|
|
unsigned long sample_rate;
|
|
unsigned long osr_rate;
|
|
unsigned long dacsrc_rate;
|
|
int bclk_div;
|
|
int lrclk_div;
|
|
int dsp_div;
|
|
int dac_div;
|
|
unsigned long dac_rate;
|
|
int ncp_div;
|
|
int osr_div;
|
|
int ret;
|
|
int idac;
|
|
int fssp;
|
|
int gpio;
|
|
|
|
if (pcm512x->bclk_ratio > 0) {
|
|
lrclk_div = pcm512x->bclk_ratio;
|
|
} else {
|
|
lrclk_div = snd_soc_params_to_frame_size(params);
|
|
|
|
if (lrclk_div == 0) {
|
|
dev_err(dev, "No LRCLK?\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if (!pcm512x->pll_out) {
|
|
sck_rate = clk_get_rate(pcm512x->sclk);
|
|
bclk_rate = params_rate(params) * lrclk_div;
|
|
bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
|
|
|
|
mck_rate = sck_rate;
|
|
} else {
|
|
ret = snd_soc_params_to_bclk(params);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Failed to find suitable BCLK: %d\n", ret);
|
|
return ret;
|
|
}
|
|
if (ret == 0) {
|
|
dev_err(dev, "No BCLK?\n");
|
|
return -EINVAL;
|
|
}
|
|
bclk_rate = ret;
|
|
|
|
pllin_rate = clk_get_rate(pcm512x->sclk);
|
|
|
|
sck_rate = pcm512x_find_sck(dai, bclk_rate);
|
|
if (!sck_rate)
|
|
return -EINVAL;
|
|
pll_rate = 4 * sck_rate;
|
|
|
|
ret = pcm512x_find_pll_coeff(dai, pllin_rate, pll_rate);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_PLL_COEFF_0, pcm512x->pll_p - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write PLL P: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_PLL_COEFF_1, pcm512x->pll_j);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write PLL J: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_PLL_COEFF_2, pcm512x->pll_d >> 8);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write PLL D msb: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_PLL_COEFF_3, pcm512x->pll_d & 0xff);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write PLL D lsb: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_PLL_COEFF_4, pcm512x->pll_r - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write PLL R: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
mck_rate = pcm512x->real_pll;
|
|
|
|
bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
|
|
}
|
|
|
|
if (bclk_div > 128) {
|
|
dev_err(dev, "Failed to find BCLK divider\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* the actual rate */
|
|
sample_rate = sck_rate / bclk_div / lrclk_div;
|
|
osr_rate = 16 * sample_rate;
|
|
|
|
/* run DSP no faster than 50 MHz */
|
|
dsp_div = mck_rate > pcm512x_dsp_max(pcm512x) ? 2 : 1;
|
|
|
|
dac_rate = pcm512x_pllin_dac_rate(dai, osr_rate, pllin_rate);
|
|
if (dac_rate) {
|
|
/* the desired clock rate is "compatible" with the pll input
|
|
* clock, so use that clock as dac input instead of the pll
|
|
* output clock since the pll will introduce jitter and thus
|
|
* noise.
|
|
*/
|
|
dev_dbg(dev, "using pll input as dac input\n");
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
|
|
PCM512x_SDAC, PCM512x_SDAC_GPIO);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to set gpio as dacref: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_DACIN,
|
|
PCM512x_GREF, gpio);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to set gpio %d as dacin: %d\n",
|
|
pcm512x->pll_in, ret);
|
|
return ret;
|
|
}
|
|
|
|
dacsrc_rate = pllin_rate;
|
|
} else {
|
|
/* run DAC no faster than 6144000 Hz */
|
|
unsigned long dac_mul = pcm512x_dac_max(pcm512x, 6144000)
|
|
/ osr_rate;
|
|
unsigned long sck_mul = sck_rate / osr_rate;
|
|
|
|
for (; dac_mul; dac_mul--) {
|
|
if (!(sck_mul % dac_mul))
|
|
break;
|
|
}
|
|
if (!dac_mul) {
|
|
dev_err(dev, "Failed to find DAC rate\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dac_rate = dac_mul * osr_rate;
|
|
dev_dbg(dev, "dac_rate %lu sample_rate %lu\n",
|
|
dac_rate, sample_rate);
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
|
|
PCM512x_SDAC, PCM512x_SDAC_SCK);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to set sck as dacref: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dacsrc_rate = sck_rate;
|
|
}
|
|
|
|
osr_div = DIV_ROUND_CLOSEST(dac_rate, osr_rate);
|
|
if (osr_div > 128) {
|
|
dev_err(dev, "Failed to find OSR divider\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dac_div = DIV_ROUND_CLOSEST(dacsrc_rate, dac_rate);
|
|
if (dac_div > 128) {
|
|
dev_err(dev, "Failed to find DAC divider\n");
|
|
return -EINVAL;
|
|
}
|
|
dac_rate = dacsrc_rate / dac_div;
|
|
|
|
ncp_div = DIV_ROUND_CLOSEST(dac_rate,
|
|
pcm512x_ncp_target(pcm512x, dac_rate));
|
|
if (ncp_div > 128 || dac_rate / ncp_div > 2048000) {
|
|
/* run NCP no faster than 2048000 Hz, but why? */
|
|
ncp_div = DIV_ROUND_UP(dac_rate, 2048000);
|
|
if (ncp_div > 128) {
|
|
dev_err(dev, "Failed to find NCP divider\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
idac = mck_rate / (dsp_div * sample_rate);
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_DSP_CLKDIV, dsp_div - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write DSP divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_DAC_CLKDIV, dac_div - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write DAC divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_NCP_CLKDIV, ncp_div - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write NCP divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_OSR_CLKDIV, osr_div - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write OSR divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_MASTER_CLKDIV_1, bclk_div - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write BCLK divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap,
|
|
PCM512x_MASTER_CLKDIV_2, lrclk_div - 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write LRCLK divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_1, idac >> 8);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write IDAC msb divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_2, idac & 0xff);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to write IDAC lsb divider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if (sample_rate <= pcm512x_dac_max(pcm512x, 48000))
|
|
fssp = PCM512x_FSSP_48KHZ;
|
|
else if (sample_rate <= pcm512x_dac_max(pcm512x, 96000))
|
|
fssp = PCM512x_FSSP_96KHZ;
|
|
else if (sample_rate <= pcm512x_dac_max(pcm512x, 192000))
|
|
fssp = PCM512x_FSSP_192KHZ;
|
|
else
|
|
fssp = PCM512x_FSSP_384KHZ;
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_FS_SPEED_MODE,
|
|
PCM512x_FSSP, fssp);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to set fs speed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(component->dev, "DSP divider %d\n", dsp_div);
|
|
dev_dbg(component->dev, "DAC divider %d\n", dac_div);
|
|
dev_dbg(component->dev, "NCP divider %d\n", ncp_div);
|
|
dev_dbg(component->dev, "OSR divider %d\n", osr_div);
|
|
dev_dbg(component->dev, "BCK divider %d\n", bclk_div);
|
|
dev_dbg(component->dev, "LRCK divider %d\n", lrclk_div);
|
|
dev_dbg(component->dev, "IDAC %d\n", idac);
|
|
dev_dbg(component->dev, "1<<FSSP %d\n", 1 << fssp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm512x_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
int alen;
|
|
int gpio;
|
|
int ret;
|
|
|
|
dev_dbg(component->dev, "hw_params %u Hz, %u channels\n",
|
|
params_rate(params),
|
|
params_channels(params));
|
|
|
|
switch (params_width(params)) {
|
|
case 16:
|
|
alen = PCM512x_ALEN_16;
|
|
break;
|
|
case 20:
|
|
alen = PCM512x_ALEN_20;
|
|
break;
|
|
case 24:
|
|
alen = PCM512x_ALEN_24;
|
|
break;
|
|
case 32:
|
|
alen = PCM512x_ALEN_32;
|
|
break;
|
|
default:
|
|
dev_err(component->dev, "Bad frame size: %d\n",
|
|
params_width(params));
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
|
|
PCM512x_ALEN, alen);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to set frame size: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if ((pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) ==
|
|
SND_SOC_DAIFMT_CBS_CFS) {
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_ERROR_DETECT,
|
|
PCM512x_DCAS, 0);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to enable clock divider autoset: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
goto skip_pll;
|
|
}
|
|
|
|
if (pcm512x->pll_out) {
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_A, 0x11);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to set FLEX_A: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_B, 0xff);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to set FLEX_B: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_ERROR_DETECT,
|
|
PCM512x_IDFS | PCM512x_IDBK
|
|
| PCM512x_IDSK | PCM512x_IDCH
|
|
| PCM512x_IDCM | PCM512x_DCAS
|
|
| PCM512x_IPLK,
|
|
PCM512x_IDFS | PCM512x_IDBK
|
|
| PCM512x_IDSK | PCM512x_IDCH
|
|
| PCM512x_DCAS);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to ignore auto-clock failures: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
} else {
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_ERROR_DETECT,
|
|
PCM512x_IDFS | PCM512x_IDBK
|
|
| PCM512x_IDSK | PCM512x_IDCH
|
|
| PCM512x_IDCM | PCM512x_DCAS
|
|
| PCM512x_IPLK,
|
|
PCM512x_IDFS | PCM512x_IDBK
|
|
| PCM512x_IDSK | PCM512x_IDCH
|
|
| PCM512x_DCAS | PCM512x_IPLK);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to ignore auto-clock failures: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN,
|
|
PCM512x_PLLE, 0);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to disable pll: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = pcm512x_set_dividers(dai, params);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
if (pcm512x->pll_out) {
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_REF,
|
|
PCM512x_SREF, PCM512x_SREF_GPIO);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to set gpio as pllref: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_PLLIN,
|
|
PCM512x_GREF, gpio);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to set gpio %d as pllin: %d\n",
|
|
pcm512x->pll_in, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN,
|
|
PCM512x_PLLE, PCM512x_PLLE);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to enable pll: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
gpio = PCM512x_G1OE << (pcm512x->pll_out - 1);
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_EN,
|
|
gpio, gpio);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to enable gpio %d: %d\n",
|
|
pcm512x->pll_out, ret);
|
|
return ret;
|
|
}
|
|
|
|
gpio = PCM512x_GPIO_OUTPUT_1 + pcm512x->pll_out - 1;
|
|
ret = regmap_update_bits(pcm512x->regmap, gpio,
|
|
PCM512x_GxSL, PCM512x_GxSL_PLLCK);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to output pll on %d: %d\n",
|
|
ret, pcm512x->pll_out);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_SYNCHRONIZE,
|
|
PCM512x_RQSY, PCM512x_RQSY_HALT);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to halt clocks: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_SYNCHRONIZE,
|
|
PCM512x_RQSY, PCM512x_RQSY_RESUME);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to resume clocks: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
skip_pll:
|
|
return 0;
|
|
}
|
|
|
|
static int pcm512x_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
int afmt;
|
|
int offset = 0;
|
|
int clock_output;
|
|
int master_mode;
|
|
int ret;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
clock_output = 0;
|
|
master_mode = 0;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
clock_output = PCM512x_BCKO | PCM512x_LRKO;
|
|
master_mode = PCM512x_RLRK | PCM512x_RBCK;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
clock_output = PCM512x_BCKO;
|
|
master_mode = PCM512x_RBCK;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_BCLK_LRCLK_CFG,
|
|
PCM512x_BCKP | PCM512x_BCKO | PCM512x_LRKO,
|
|
clock_output);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to enable clock output: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_MASTER_MODE,
|
|
PCM512x_RLRK | PCM512x_RBCK,
|
|
master_mode);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to enable master mode: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
afmt = PCM512x_AFMT_I2S;
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
afmt = PCM512x_AFMT_RTJ;
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
afmt = PCM512x_AFMT_LTJ;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
offset = 1;
|
|
fallthrough;
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
afmt = PCM512x_AFMT_DSP;
|
|
break;
|
|
default:
|
|
dev_err(component->dev, "unsupported DAI format: 0x%x\n",
|
|
pcm512x->fmt);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
|
|
PCM512x_AFMT, afmt);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to set data format: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_2,
|
|
0xFF, offset);
|
|
if (ret != 0) {
|
|
dev_err(component->dev, "Failed to set data offset: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
pcm512x->fmt = fmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm512x_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
|
|
if (ratio > 256)
|
|
return -EINVAL;
|
|
|
|
pcm512x->bclk_ratio = ratio;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm512x_mute(struct snd_soc_dai *dai, int mute, int direction)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
|
|
int ret;
|
|
unsigned int mute_det;
|
|
|
|
mutex_lock(&pcm512x->mutex);
|
|
|
|
if (mute) {
|
|
pcm512x->mute |= 0x1;
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_MUTE,
|
|
PCM512x_RQML | PCM512x_RQMR,
|
|
PCM512x_RQML | PCM512x_RQMR);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to set digital mute: %d\n", ret);
|
|
goto unlock;
|
|
}
|
|
|
|
regmap_read_poll_timeout(pcm512x->regmap,
|
|
PCM512x_ANALOG_MUTE_DET,
|
|
mute_det, (mute_det & 0x3) == 0,
|
|
200, 10000);
|
|
} else {
|
|
pcm512x->mute &= ~0x1;
|
|
ret = pcm512x_update_mute(pcm512x);
|
|
if (ret != 0) {
|
|
dev_err(component->dev,
|
|
"Failed to update digital mute: %d\n", ret);
|
|
goto unlock;
|
|
}
|
|
|
|
regmap_read_poll_timeout(pcm512x->regmap,
|
|
PCM512x_ANALOG_MUTE_DET,
|
|
mute_det,
|
|
(mute_det & 0x3)
|
|
== ((~pcm512x->mute >> 1) & 0x3),
|
|
200, 10000);
|
|
}
|
|
|
|
unlock:
|
|
mutex_unlock(&pcm512x->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops pcm512x_dai_ops = {
|
|
.startup = pcm512x_dai_startup,
|
|
.hw_params = pcm512x_hw_params,
|
|
.set_fmt = pcm512x_set_fmt,
|
|
.mute_stream = pcm512x_mute,
|
|
.set_bclk_ratio = pcm512x_set_bclk_ratio,
|
|
.no_capture_mute = 1,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver pcm512x_dai = {
|
|
.name = "pcm512x-hifi",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_CONTINUOUS,
|
|
.rate_min = 8000,
|
|
.rate_max = 384000,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S24_LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE
|
|
},
|
|
.ops = &pcm512x_dai_ops,
|
|
};
|
|
|
|
static const struct snd_soc_component_driver pcm512x_component_driver = {
|
|
.set_bias_level = pcm512x_set_bias_level,
|
|
.controls = pcm512x_controls,
|
|
.num_controls = ARRAY_SIZE(pcm512x_controls),
|
|
.dapm_widgets = pcm512x_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(pcm512x_dapm_widgets),
|
|
.dapm_routes = pcm512x_dapm_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(pcm512x_dapm_routes),
|
|
.use_pmdown_time = 1,
|
|
.endianness = 1,
|
|
.non_legacy_dai_naming = 1,
|
|
};
|
|
|
|
static const struct regmap_range_cfg pcm512x_range = {
|
|
.name = "Pages", .range_min = PCM512x_VIRT_BASE,
|
|
.range_max = PCM512x_MAX_REGISTER,
|
|
.selector_reg = PCM512x_PAGE,
|
|
.selector_mask = 0xff,
|
|
.window_start = 0, .window_len = 0x100,
|
|
};
|
|
|
|
const struct regmap_config pcm512x_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
|
|
.readable_reg = pcm512x_readable,
|
|
.volatile_reg = pcm512x_volatile,
|
|
|
|
.ranges = &pcm512x_range,
|
|
.num_ranges = 1,
|
|
|
|
.max_register = PCM512x_MAX_REGISTER,
|
|
.reg_defaults = pcm512x_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(pcm512x_reg_defaults),
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
EXPORT_SYMBOL_GPL(pcm512x_regmap);
|
|
|
|
int pcm512x_probe(struct device *dev, struct regmap *regmap)
|
|
{
|
|
struct pcm512x_priv *pcm512x;
|
|
int i, ret;
|
|
|
|
pcm512x = devm_kzalloc(dev, sizeof(struct pcm512x_priv), GFP_KERNEL);
|
|
if (!pcm512x)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&pcm512x->mutex);
|
|
|
|
dev_set_drvdata(dev, pcm512x);
|
|
pcm512x->regmap = regmap;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pcm512x->supplies); i++)
|
|
pcm512x->supplies[i].supply = pcm512x_supply_names[i];
|
|
|
|
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pcm512x->supplies),
|
|
pcm512x->supplies);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to get supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
pcm512x->supply_nb[0].notifier_call = pcm512x_regulator_event_0;
|
|
pcm512x->supply_nb[1].notifier_call = pcm512x_regulator_event_1;
|
|
pcm512x->supply_nb[2].notifier_call = pcm512x_regulator_event_2;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pcm512x->supplies); i++) {
|
|
ret = devm_regulator_register_notifier(
|
|
pcm512x->supplies[i].consumer,
|
|
&pcm512x->supply_nb[i]);
|
|
if (ret != 0) {
|
|
dev_err(dev,
|
|
"Failed to register regulator notifier: %d\n",
|
|
ret);
|
|
}
|
|
}
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(pcm512x->supplies),
|
|
pcm512x->supplies);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to enable supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Reset the device, verifying I/O in the process for I2C */
|
|
ret = regmap_write(regmap, PCM512x_RESET,
|
|
PCM512x_RSTM | PCM512x_RSTR);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to reset device: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
ret = regmap_write(regmap, PCM512x_RESET, 0);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to reset device: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
pcm512x->sclk = devm_clk_get(dev, NULL);
|
|
if (PTR_ERR(pcm512x->sclk) == -EPROBE_DEFER) {
|
|
ret = -EPROBE_DEFER;
|
|
goto err;
|
|
}
|
|
if (!IS_ERR(pcm512x->sclk)) {
|
|
ret = clk_prepare_enable(pcm512x->sclk);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to enable SCLK: %d\n", ret);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
/* Default to standby mode */
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
|
|
PCM512x_RQST, PCM512x_RQST);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to request standby: %d\n",
|
|
ret);
|
|
goto err_clk;
|
|
}
|
|
|
|
pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
pm_runtime_idle(dev);
|
|
|
|
#ifdef CONFIG_OF
|
|
if (dev->of_node) {
|
|
const struct device_node *np = dev->of_node;
|
|
u32 val;
|
|
|
|
if (of_property_read_u32(np, "pll-in", &val) >= 0) {
|
|
if (val > 6) {
|
|
dev_err(dev, "Invalid pll-in\n");
|
|
ret = -EINVAL;
|
|
goto err_clk;
|
|
}
|
|
pcm512x->pll_in = val;
|
|
}
|
|
|
|
if (of_property_read_u32(np, "pll-out", &val) >= 0) {
|
|
if (val > 6) {
|
|
dev_err(dev, "Invalid pll-out\n");
|
|
ret = -EINVAL;
|
|
goto err_clk;
|
|
}
|
|
pcm512x->pll_out = val;
|
|
}
|
|
|
|
if (!pcm512x->pll_in != !pcm512x->pll_out) {
|
|
dev_err(dev,
|
|
"Error: both pll-in and pll-out, or none\n");
|
|
ret = -EINVAL;
|
|
goto err_clk;
|
|
}
|
|
if (pcm512x->pll_in && pcm512x->pll_in == pcm512x->pll_out) {
|
|
dev_err(dev, "Error: pll-in == pll-out\n");
|
|
ret = -EINVAL;
|
|
goto err_clk;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ret = devm_snd_soc_register_component(dev, &pcm512x_component_driver,
|
|
&pcm512x_dai, 1);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to register CODEC: %d\n", ret);
|
|
goto err_pm;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_pm:
|
|
pm_runtime_disable(dev);
|
|
err_clk:
|
|
if (!IS_ERR(pcm512x->sclk))
|
|
clk_disable_unprepare(pcm512x->sclk);
|
|
err:
|
|
regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
|
|
pcm512x->supplies);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(pcm512x_probe);
|
|
|
|
void pcm512x_remove(struct device *dev)
|
|
{
|
|
struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
|
|
|
|
pm_runtime_disable(dev);
|
|
if (!IS_ERR(pcm512x->sclk))
|
|
clk_disable_unprepare(pcm512x->sclk);
|
|
regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
|
|
pcm512x->supplies);
|
|
}
|
|
EXPORT_SYMBOL_GPL(pcm512x_remove);
|
|
|
|
#ifdef CONFIG_PM
|
|
static int pcm512x_suspend(struct device *dev)
|
|
{
|
|
struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
|
|
PCM512x_RQPD, PCM512x_RQPD);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to request power down: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
|
|
pcm512x->supplies);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to disable supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if (!IS_ERR(pcm512x->sclk))
|
|
clk_disable_unprepare(pcm512x->sclk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm512x_resume(struct device *dev)
|
|
{
|
|
struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
if (!IS_ERR(pcm512x->sclk)) {
|
|
ret = clk_prepare_enable(pcm512x->sclk);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to enable SCLK: %d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(pcm512x->supplies),
|
|
pcm512x->supplies);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to enable supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
regcache_cache_only(pcm512x->regmap, false);
|
|
ret = regcache_sync(pcm512x->regmap);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to sync cache: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
|
|
PCM512x_RQPD, 0);
|
|
if (ret != 0) {
|
|
dev_err(dev, "Failed to remove power down: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
const struct dev_pm_ops pcm512x_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(pcm512x_suspend, pcm512x_resume, NULL)
|
|
};
|
|
EXPORT_SYMBOL_GPL(pcm512x_pm_ops);
|
|
|
|
MODULE_DESCRIPTION("ASoC PCM512x codec driver");
|
|
MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
|
|
MODULE_LICENSE("GPL v2");
|