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ASoC: codecs: wcd938x-sdw: add SoundWire driver
This patch adds support to SoundWire devices on WCD9380/WCD9385 Codec Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20210609090943.7896-6-srinivas.kandagatla@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Kandagatla
Mark Brown
parent
e02c65f3a7
commit
16572522ae
315
sound/soc/codecs/wcd938x-sdw.c
Normal file
315
sound/soc/codecs/wcd938x-sdw.c
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@ -0,0 +1,315 @@
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// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2021, Linaro Limited
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/component.h>
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#include <sound/soc.h>
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#include <linux/pm_runtime.h>
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#include <linux/irqdomain.h>
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#include <linux/of.h>
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#include <linux/soundwire/sdw.h>
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#include <linux/soundwire/sdw_type.h>
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#include <linux/soundwire/sdw_registers.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "wcd938x.h"
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#define SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(m) (0xE0 + 0x10 * (m))
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static struct wcd938x_sdw_ch_info wcd938x_sdw_rx_ch_info[] = {
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WCD_SDW_CH(WCD938X_HPH_L, WCD938X_HPH_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_HPH_R, WCD938X_HPH_PORT, BIT(1)),
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WCD_SDW_CH(WCD938X_CLSH, WCD938X_CLSH_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_COMP_L, WCD938X_COMP_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_COMP_R, WCD938X_COMP_PORT, BIT(1)),
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WCD_SDW_CH(WCD938X_LO, WCD938X_LO_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_DSD_L, WCD938X_DSD_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_DSD_R, WCD938X_DSD_PORT, BIT(1)),
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};
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static struct wcd938x_sdw_ch_info wcd938x_sdw_tx_ch_info[] = {
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WCD_SDW_CH(WCD938X_ADC1, WCD938X_ADC_1_2_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_ADC2, WCD938X_ADC_1_2_PORT, BIT(1)),
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WCD_SDW_CH(WCD938X_ADC3, WCD938X_ADC_3_4_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_ADC4, WCD938X_ADC_3_4_PORT, BIT(1)),
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WCD_SDW_CH(WCD938X_DMIC0, WCD938X_DMIC_0_3_MBHC_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_DMIC1, WCD938X_DMIC_0_3_MBHC_PORT, BIT(1)),
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WCD_SDW_CH(WCD938X_MBHC, WCD938X_DMIC_0_3_MBHC_PORT, BIT(2)),
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WCD_SDW_CH(WCD938X_DMIC2, WCD938X_DMIC_0_3_MBHC_PORT, BIT(2)),
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WCD_SDW_CH(WCD938X_DMIC3, WCD938X_DMIC_0_3_MBHC_PORT, BIT(3)),
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WCD_SDW_CH(WCD938X_DMIC4, WCD938X_DMIC_4_7_PORT, BIT(0)),
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WCD_SDW_CH(WCD938X_DMIC5, WCD938X_DMIC_4_7_PORT, BIT(1)),
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WCD_SDW_CH(WCD938X_DMIC6, WCD938X_DMIC_4_7_PORT, BIT(2)),
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WCD_SDW_CH(WCD938X_DMIC7, WCD938X_DMIC_4_7_PORT, BIT(3)),
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};
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static struct sdw_dpn_prop wcd938x_dpn_prop[WCD938X_MAX_SWR_PORTS] = {
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{
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.num = 1,
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.type = SDW_DPN_SIMPLE,
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.min_ch = 1,
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.max_ch = 8,
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.simple_ch_prep_sm = true,
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}, {
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.num = 2,
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.type = SDW_DPN_SIMPLE,
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.min_ch = 1,
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.max_ch = 4,
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.simple_ch_prep_sm = true,
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}, {
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.num = 3,
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.type = SDW_DPN_SIMPLE,
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.min_ch = 1,
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.max_ch = 4,
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.simple_ch_prep_sm = true,
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}, {
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.num = 4,
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.type = SDW_DPN_SIMPLE,
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.min_ch = 1,
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.max_ch = 4,
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.simple_ch_prep_sm = true,
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}, {
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.num = 5,
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.type = SDW_DPN_SIMPLE,
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.min_ch = 1,
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.max_ch = 4,
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.simple_ch_prep_sm = true,
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}
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};
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struct device *wcd938x_sdw_device_get(struct device_node *np)
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{
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return bus_find_device_by_of_node(&sdw_bus_type, np);
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}
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EXPORT_SYMBOL_GPL(wcd938x_sdw_device_get);
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int wcd938x_swr_get_current_bank(struct sdw_slave *sdev)
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{
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int bank;
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bank = sdw_read(sdev, SDW_SCP_CTRL);
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return ((bank & 0x40) ? 1 : 0);
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}
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EXPORT_SYMBOL_GPL(wcd938x_swr_get_current_bank);
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int wcd938x_sdw_hw_params(struct wcd938x_sdw_priv *wcd,
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struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct sdw_port_config port_config[WCD938X_MAX_SWR_PORTS];
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unsigned long ch_mask;
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int i, j;
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wcd->sconfig.ch_count = 1;
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wcd->active_ports = 0;
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for (i = 0; i < WCD938X_MAX_SWR_PORTS; i++) {
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ch_mask = wcd->port_config[i].ch_mask;
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if (!ch_mask)
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continue;
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for_each_set_bit(j, &ch_mask, 4)
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wcd->sconfig.ch_count++;
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port_config[wcd->active_ports] = wcd->port_config[i];
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wcd->active_ports++;
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}
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wcd->sconfig.bps = 1;
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wcd->sconfig.frame_rate = params_rate(params);
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if (wcd->is_tx)
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wcd->sconfig.direction = SDW_DATA_DIR_TX;
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else
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wcd->sconfig.direction = SDW_DATA_DIR_RX;
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wcd->sconfig.type = SDW_STREAM_PCM;
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return sdw_stream_add_slave(wcd->sdev, &wcd->sconfig,
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&port_config[0], wcd->active_ports,
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wcd->sruntime);
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}
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EXPORT_SYMBOL_GPL(wcd938x_sdw_hw_params);
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int wcd938x_sdw_free(struct wcd938x_sdw_priv *wcd,
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struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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sdw_stream_remove_slave(wcd->sdev, wcd->sruntime);
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return 0;
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}
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EXPORT_SYMBOL_GPL(wcd938x_sdw_free);
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int wcd938x_sdw_set_sdw_stream(struct wcd938x_sdw_priv *wcd,
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struct snd_soc_dai *dai,
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void *stream, int direction)
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{
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wcd->sruntime = stream;
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return 0;
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}
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EXPORT_SYMBOL_GPL(wcd938x_sdw_set_sdw_stream);
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static int wcd9380_update_status(struct sdw_slave *slave,
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enum sdw_slave_status status)
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{
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return 0;
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}
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static int wcd9380_bus_config(struct sdw_slave *slave,
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struct sdw_bus_params *params)
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{
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sdw_write(slave, SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(params->next_bank), 0x01);
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return 0;
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}
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static int wcd9380_interrupt_callback(struct sdw_slave *slave,
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struct sdw_slave_intr_status *status)
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{
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struct wcd938x_sdw_priv *wcd = dev_get_drvdata(&slave->dev);
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return wcd938x_handle_sdw_irq(wcd);
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}
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static struct sdw_slave_ops wcd9380_slave_ops = {
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.update_status = wcd9380_update_status,
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.interrupt_callback = wcd9380_interrupt_callback,
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.bus_config = wcd9380_bus_config,
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};
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static int wcd938x_sdw_component_bind(struct device *dev,
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struct device *master, void *data)
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{
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return 0;
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}
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static void wcd938x_sdw_component_unbind(struct device *dev,
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struct device *master, void *data)
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{
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}
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static const struct component_ops wcd938x_sdw_component_ops = {
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.bind = wcd938x_sdw_component_bind,
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.unbind = wcd938x_sdw_component_unbind,
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};
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static int wcd9380_probe(struct sdw_slave *pdev,
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const struct sdw_device_id *id)
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{
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struct device *dev = &pdev->dev;
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struct wcd938x_sdw_priv *wcd;
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int ret;
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wcd = devm_kzalloc(dev, sizeof(*wcd), GFP_KERNEL);
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if (!wcd)
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return -ENOMEM;
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/**
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* Port map index starts with 0, however the data port for this codec
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* are from index 1
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*/
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if (of_property_read_bool(dev->of_node, "qcom,tx-port-mapping")) {
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wcd->is_tx = true;
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ret = of_property_read_u32_array(dev->of_node, "qcom,tx-port-mapping",
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&pdev->m_port_map[1],
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WCD938X_MAX_TX_SWR_PORTS);
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} else {
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ret = of_property_read_u32_array(dev->of_node, "qcom,rx-port-mapping",
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&pdev->m_port_map[1],
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WCD938X_MAX_SWR_PORTS);
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}
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if (ret < 0)
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dev_info(dev, "Static Port mapping not specified\n");
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wcd->sdev = pdev;
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dev_set_drvdata(dev, wcd);
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pdev->prop.scp_int1_mask = SDW_SCP_INT1_IMPL_DEF |
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SDW_SCP_INT1_BUS_CLASH |
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SDW_SCP_INT1_PARITY;
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pdev->prop.lane_control_support = true;
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if (wcd->is_tx) {
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struct regmap *rm;
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pdev->prop.source_ports = GENMASK(WCD938X_MAX_SWR_PORTS, 0);
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pdev->prop.src_dpn_prop = wcd938x_dpn_prop;
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wcd->ch_info = &wcd938x_sdw_tx_ch_info[0];
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pdev->prop.wake_capable = true;
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rm = devm_regmap_init_sdw(pdev, &wcd938x_regmap_config);
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if (IS_ERR(rm))
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return PTR_ERR(rm);
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} else {
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pdev->prop.sink_ports = GENMASK(WCD938X_MAX_SWR_PORTS, 0);
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pdev->prop.sink_dpn_prop = wcd938x_dpn_prop;
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wcd->ch_info = &wcd938x_sdw_rx_ch_info[0];
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}
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pm_runtime_set_autosuspend_delay(dev, 3000);
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pm_runtime_use_autosuspend(dev);
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pm_runtime_mark_last_busy(dev);
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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return component_add(dev, &wcd938x_sdw_component_ops);
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}
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static const struct sdw_device_id wcd9380_slave_id[] = {
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SDW_SLAVE_ENTRY(0x0217, 0x10d, 0),
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{},
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};
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MODULE_DEVICE_TABLE(sdw, wcd9380_slave_id);
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static int __maybe_unused wcd938x_sdw_runtime_suspend(struct device *dev)
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{
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struct regmap *regmap = dev_get_regmap(dev, NULL);
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if (regmap) {
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regcache_cache_only(regmap, true);
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regcache_mark_dirty(regmap);
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}
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return 0;
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}
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static int __maybe_unused wcd938x_sdw_runtime_resume(struct device *dev)
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{
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struct regmap *regmap = dev_get_regmap(dev, NULL);
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if (regmap) {
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regcache_cache_only(regmap, false);
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regcache_sync(regmap);
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}
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pm_runtime_mark_last_busy(dev);
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return 0;
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}
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static const struct dev_pm_ops wcd938x_sdw_pm_ops = {
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SET_RUNTIME_PM_OPS(wcd938x_sdw_runtime_suspend, wcd938x_sdw_runtime_resume, NULL)
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};
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static struct sdw_driver wcd9380_codec_driver = {
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.probe = wcd9380_probe,
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.ops = &wcd9380_slave_ops,
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.id_table = wcd9380_slave_id,
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.driver = {
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.name = "wcd9380-codec",
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.pm = &wcd938x_sdw_pm_ops,
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}
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};
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module_sdw_driver(wcd9380_codec_driver);
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MODULE_DESCRIPTION("WCD938X SDW codec driver");
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MODULE_LICENSE("GPL");
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@ -1514,7 +1514,39 @@ int wcd938x_handle_sdw_irq(struct wcd938x_sdw_priv *wcd)
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}
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EXPORT_SYMBOL_GPL(wcd938x_handle_sdw_irq);
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static int wcd938x_codec_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct wcd938x_priv *wcd938x = dev_get_drvdata(dai->dev);
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struct wcd938x_sdw_priv *wcd = wcd938x->sdw_priv[dai->id];
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return wcd938x_sdw_hw_params(wcd, substream, params, dai);
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}
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static int wcd938x_codec_free(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct wcd938x_priv *wcd938x = dev_get_drvdata(dai->dev);
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struct wcd938x_sdw_priv *wcd = wcd938x->sdw_priv[dai->id];
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return wcd938x_sdw_free(wcd, substream, dai);
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}
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static int wcd938x_codec_set_sdw_stream(struct snd_soc_dai *dai,
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void *stream, int direction)
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{
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struct wcd938x_priv *wcd938x = dev_get_drvdata(dai->dev);
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struct wcd938x_sdw_priv *wcd = wcd938x->sdw_priv[dai->id];
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return wcd938x_sdw_set_sdw_stream(wcd, dai, stream, direction);
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}
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static struct snd_soc_dai_ops wcd938x_sdw_dai_ops = {
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.hw_params = wcd938x_codec_hw_params,
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.hw_free = wcd938x_codec_free,
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.set_sdw_stream = wcd938x_codec_set_sdw_stream,
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};
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static struct snd_soc_dai_driver wcd938x_dais[] = {
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@ -1558,6 +1590,53 @@ static int wcd938x_bind(struct device *dev)
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return ret;
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}
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wcd938x->rxdev = wcd938x_sdw_device_get(wcd938x->rxnode);
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if (!wcd938x->rxdev) {
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dev_err(dev, "could not find slave with matching of node\n");
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return -EINVAL;
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}
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wcd938x->sdw_priv[AIF1_PB] = dev_get_drvdata(wcd938x->rxdev);
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wcd938x->sdw_priv[AIF1_PB]->wcd938x = wcd938x;
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wcd938x->txdev = wcd938x_sdw_device_get(wcd938x->txnode);
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if (!wcd938x->txdev) {
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dev_err(dev, "could not find txslave with matching of node\n");
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return -EINVAL;
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}
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wcd938x->sdw_priv[AIF1_CAP] = dev_get_drvdata(wcd938x->txdev);
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wcd938x->sdw_priv[AIF1_CAP]->wcd938x = wcd938x;
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wcd938x->tx_sdw_dev = dev_to_sdw_dev(wcd938x->txdev);
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if (!wcd938x->tx_sdw_dev) {
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dev_err(dev, "could not get txslave with matching of dev\n");
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return -EINVAL;
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}
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/* As TX is main CSR reg interface, which should not be suspended first.
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* expicilty add the dependency link */
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if (!device_link_add(wcd938x->rxdev, wcd938x->txdev, DL_FLAG_STATELESS |
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DL_FLAG_PM_RUNTIME)) {
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dev_err(dev, "could not devlink tx and rx\n");
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return -EINVAL;
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}
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if (!device_link_add(dev, wcd938x->txdev, DL_FLAG_STATELESS |
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DL_FLAG_PM_RUNTIME)) {
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dev_err(dev, "could not devlink wcd and tx\n");
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return -EINVAL;
|
||||
}
|
||||
|
||||
if (!device_link_add(dev, wcd938x->rxdev, DL_FLAG_STATELESS |
|
||||
DL_FLAG_PM_RUNTIME)) {
|
||||
dev_err(dev, "could not devlink wcd and rx\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
wcd938x->regmap = dev_get_regmap(wcd938x->txdev, NULL);
|
||||
if (!wcd938x->regmap) {
|
||||
dev_err(dev, "%s: tx csr regmap not found\n", __func__);
|
||||
return PTR_ERR(wcd938x->regmap);
|
||||
}
|
||||
|
||||
ret = wcd938x_set_micbias_data(wcd938x);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "%s: bad micbias pdata\n", __func__);
|
||||
@ -1578,6 +1657,9 @@ static void wcd938x_unbind(struct device *dev)
|
||||
{
|
||||
struct wcd938x_priv *wcd938x = dev_get_drvdata(dev);
|
||||
|
||||
device_link_remove(dev, wcd938x->txdev);
|
||||
device_link_remove(dev, wcd938x->rxdev);
|
||||
device_link_remove(wcd938x->rxdev, wcd938x->txdev);
|
||||
snd_soc_unregister_component(dev);
|
||||
component_unbind_all(dev, wcd938x);
|
||||
}
|
||||
|
||||
@ -668,4 +668,53 @@ struct wcd938x_sdw_priv {
|
||||
extern struct regmap_config wcd938x_regmap_config;
|
||||
int wcd938x_handle_sdw_irq(struct wcd938x_sdw_priv *priv);
|
||||
|
||||
#if IS_ENABLED(CONFIG_SND_SOC_WCD938X_SDW)
|
||||
int wcd938x_sdw_free(struct wcd938x_sdw_priv *wcd,
|
||||
struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai);
|
||||
int wcd938x_sdw_set_sdw_stream(struct wcd938x_sdw_priv *wcd,
|
||||
struct snd_soc_dai *dai,
|
||||
void *stream, int direction);
|
||||
int wcd938x_sdw_hw_params(struct wcd938x_sdw_priv *wcd,
|
||||
struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params,
|
||||
struct snd_soc_dai *dai);
|
||||
|
||||
struct device *wcd938x_sdw_device_get(struct device_node *np);
|
||||
int wcd938x_swr_get_current_bank(struct sdw_slave *sdev);
|
||||
|
||||
#else
|
||||
|
||||
static inline int wcd938x_sdw_free(struct wcd938x_sdw_priv *wcd,
|
||||
struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int wcd938x_sdw_set_sdw_stream(struct wcd938x_sdw_priv *wcd,
|
||||
struct snd_soc_dai *dai,
|
||||
void *stream, int direction)
|
||||
{
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline int wcd938x_sdw_hw_params(struct wcd938x_sdw_priv *wcd,
|
||||
struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
static inline struct device *wcd938x_sdw_device_get(struct device_node *np)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline int wcd938x_swr_get_current_bank(struct sdw_slave *sdev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif /* CONFIG_SND_SOC_WCD938X_SDW */
|
||||
#endif /* __WCD938X_H__ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user