--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// rt1308-sdw.c -- rt1308 ALSA SoC audio driver
+//
+// Copyright(c) 2019 Realtek Semiconductor Corp.
+//
+//
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/pm_runtime.h>
+#include <linux/mod_devicetable.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include <linux/soundwire/sdw_registers.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+
+#include "rt1308.h"
+#include "rt1308-sdw.h"
+
+static bool rt1308_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x00e0:
+ case 0x00f0:
+ case 0x2f01 ... 0x2f07:
+ case 0x3000 ... 0x3001:
+ case 0x3004 ... 0x3005:
+ case 0x3008:
+ case 0x300a:
+ case 0xc000 ... 0xcff3:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt1308_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x2f01 ... 0x2f07:
+ case 0x3000 ... 0x3001:
+ case 0x3004 ... 0x3005:
+ case 0x3008:
+ case 0x300a:
+ case 0xc000:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config rt1308_sdw_regmap = {
+ .reg_bits = 32,
+ .val_bits = 8,
+ .readable_reg = rt1308_readable_register,
+ .volatile_reg = rt1308_volatile_register,
+ .max_register = 0xcfff,
+ .reg_defaults = rt1308_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(rt1308_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+/* Bus clock frequency */
+#define RT1308_CLK_FREQ_9600000HZ 9600000
+#define RT1308_CLK_FREQ_12000000HZ 12000000
+#define RT1308_CLK_FREQ_6000000HZ 6000000
+#define RT1308_CLK_FREQ_4800000HZ 4800000
+#define RT1308_CLK_FREQ_2400000HZ 2400000
+#define RT1308_CLK_FREQ_12288000HZ 12288000
+
+static int rt1308_clock_config(struct device *dev)
+{
+ struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+ unsigned int clk_freq, value;
+
+ clk_freq = (rt1308->params.curr_dr_freq >> 1);
+
+ switch (clk_freq) {
+ case RT1308_CLK_FREQ_12000000HZ:
+ value = 0x0;
+ break;
+ case RT1308_CLK_FREQ_6000000HZ:
+ value = 0x1;
+ break;
+ case RT1308_CLK_FREQ_9600000HZ:
+ value = 0x2;
+ break;
+ case RT1308_CLK_FREQ_4800000HZ:
+ value = 0x3;
+ break;
+ case RT1308_CLK_FREQ_2400000HZ:
+ value = 0x4;
+ break;
+ case RT1308_CLK_FREQ_12288000HZ:
+ value = 0x5;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_write(rt1308->regmap, 0xe0, value);
+ regmap_write(rt1308->regmap, 0xf0, value);
+
+ dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
+
+ return 0;
+}
+
+static int rt1308_read_prop(struct sdw_slave *slave)
+{
+ struct sdw_slave_prop *prop = &slave->prop;
+ int nval, i, num_of_ports = 1;
+ u32 bit;
+ unsigned long addr;
+ struct sdw_dpn_prop *dpn;
+
+ prop->paging_support = true;
+
+ /* first we need to allocate memory for set bits in port lists */
+ prop->source_ports = 0x00; /* BITMAP: 00010100 (not enable yet) */
+ prop->sink_ports = 0x2; /* BITMAP: 00000010 */
+
+ /* for sink */
+ nval = hweight32(prop->sink_ports);
+ num_of_ports += nval;
+ prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
+ sizeof(*prop->sink_dpn_prop),
+ GFP_KERNEL);
+ if (!prop->sink_dpn_prop)
+ return -ENOMEM;
+
+ i = 0;
+ dpn = prop->sink_dpn_prop;
+ addr = prop->sink_ports;
+ for_each_set_bit(bit, &addr, 32) {
+ dpn[i].num = bit;
+ dpn[i].type = SDW_DPN_FULL;
+ dpn[i].simple_ch_prep_sm = true;
+ dpn[i].ch_prep_timeout = 10;
+ i++;
+ }
+
+ /* Allocate port_ready based on num_of_ports */
+ slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports,
+ sizeof(*slave->port_ready),
+ GFP_KERNEL);
+ if (!slave->port_ready)
+ return -ENOMEM;
+
+ /* Initialize completion */
+ for (i = 0; i < num_of_ports; i++)
+ init_completion(&slave->port_ready[i]);
+
+ /* set the timeout values */
+ prop->clk_stop_timeout = 20;
+
+ dev_dbg(&slave->dev, "%s\n", __func__);
+
+ return 0;
+}
+
+static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
+{
+ struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+ int ret = 0;
+ unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
+ unsigned int efuse_c_btl_l, efuse_c_btl_r;
+
+ if (rt1308->hw_init)
+ return 0;
+
+ ret = rt1308_read_prop(slave);
+ if (ret < 0)
+ goto _io_init_err_;
+
+ if (rt1308->first_hw_init) {
+ regcache_cache_only(rt1308->regmap, false);
+ regcache_cache_bypass(rt1308->regmap, true);
+ }
+
+ /*
+ * PM runtime is only enabled when a Slave reports as Attached
+ */
+ if (!rt1308->first_hw_init) {
+ /* set autosuspend parameters */
+ pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
+ pm_runtime_use_autosuspend(&slave->dev);
+
+ /* update count of parent 'active' children */
+ pm_runtime_set_active(&slave->dev);
+
+ /* make sure the device does not suspend immediately */
+ pm_runtime_mark_last_busy(&slave->dev);
+
+ pm_runtime_enable(&slave->dev);
+ }
+
+ pm_runtime_get_noresume(&slave->dev);
+
+ /* sw reset */
+ regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
+
+ /* read efuse */
+ regmap_write(rt1308->regmap, 0xc360, 0x01);
+ regmap_write(rt1308->regmap, 0xc361, 0x80);
+ regmap_write(rt1308->regmap, 0xc7f0, 0x04);
+ regmap_write(rt1308->regmap, 0xc7f1, 0xfe);
+ msleep(100);
+ regmap_write(rt1308->regmap, 0xc7f0, 0x44);
+ msleep(20);
+ regmap_write(rt1308->regmap, 0xc240, 0x10);
+
+ regmap_read(rt1308->regmap, 0xc861, &tmp);
+ efuse_m_btl_l = tmp;
+ regmap_read(rt1308->regmap, 0xc860, &tmp);
+ efuse_m_btl_l = efuse_m_btl_l | (tmp << 8);
+ regmap_read(rt1308->regmap, 0xc863, &tmp);
+ efuse_c_btl_l = tmp;
+ regmap_read(rt1308->regmap, 0xc862, &tmp);
+ efuse_c_btl_l = efuse_c_btl_l | (tmp << 8);
+ regmap_read(rt1308->regmap, 0xc871, &tmp);
+ efuse_m_btl_r = tmp;
+ regmap_read(rt1308->regmap, 0xc870, &tmp);
+ efuse_m_btl_r = efuse_m_btl_r | (tmp << 8);
+ regmap_read(rt1308->regmap, 0xc873, &tmp);
+ efuse_c_btl_r = tmp;
+ regmap_read(rt1308->regmap, 0xc872, &tmp);
+ efuse_c_btl_r = efuse_c_btl_r | (tmp << 8);
+ dev_info(&slave->dev, "%s m_btl_l=0x%x, m_btl_r=0x%x\n", __func__,
+ efuse_m_btl_l, efuse_m_btl_r);
+ dev_info(&slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
+ efuse_c_btl_l, efuse_c_btl_r);
+
+ /* initial settings */
+ regmap_write(rt1308->regmap, 0xc103, 0xc0);
+ regmap_write(rt1308->regmap, 0xc030, 0x17);
+ regmap_write(rt1308->regmap, 0xc031, 0x81);
+ regmap_write(rt1308->regmap, 0xc032, 0x26);
+ regmap_write(rt1308->regmap, 0xc040, 0x80);
+ regmap_write(rt1308->regmap, 0xc041, 0x80);
+ regmap_write(rt1308->regmap, 0xc042, 0x06);
+ regmap_write(rt1308->regmap, 0xc052, 0x0a);
+ regmap_write(rt1308->regmap, 0xc080, 0x0a);
+ regmap_write(rt1308->regmap, 0xc060, 0x02);
+ regmap_write(rt1308->regmap, 0xc061, 0x75);
+ regmap_write(rt1308->regmap, 0xc062, 0x05);
+ regmap_write(rt1308->regmap, 0xc171, 0x07);
+ regmap_write(rt1308->regmap, 0xc173, 0x0d);
+ regmap_write(rt1308->regmap, 0xc311, 0x7f);
+ regmap_write(rt1308->regmap, 0xc900, 0x90);
+ regmap_write(rt1308->regmap, 0xc1a0, 0x84);
+ regmap_write(rt1308->regmap, 0xc1a1, 0x01);
+ regmap_write(rt1308->regmap, 0xc360, 0x78);
+ regmap_write(rt1308->regmap, 0xc361, 0x87);
+ regmap_write(rt1308->regmap, 0xc0a1, 0x71);
+ regmap_write(rt1308->regmap, 0xc210, 0x00);
+ regmap_write(rt1308->regmap, 0xc070, 0x00);
+ regmap_write(rt1308->regmap, 0xc100, 0xd7);
+ regmap_write(rt1308->regmap, 0xc101, 0xd7);
+ regmap_write(rt1308->regmap, 0xc300, 0x09);
+
+ if (rt1308->first_hw_init) {
+ regcache_cache_bypass(rt1308->regmap, false);
+ regcache_mark_dirty(rt1308->regmap);
+ } else
+ rt1308->first_hw_init = true;
+
+ /* Mark Slave initialization complete */
+ rt1308->hw_init = true;
+
+ pm_runtime_mark_last_busy(&slave->dev);
+ pm_runtime_put_autosuspend(&slave->dev);
+
+ dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
+
+_io_init_err_:
+ return ret;
+}
+
+static int rt1308_update_status(struct sdw_slave *slave,
+ enum sdw_slave_status status)
+{
+ struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
+
+ /* Update the status */
+ rt1308->status = status;
+
+ if (status == SDW_SLAVE_UNATTACHED)
+ rt1308->hw_init = false;
+
+ /*
+ * Perform initialization only if slave status is present and
+ * hw_init flag is false
+ */
+ if (rt1308->hw_init || rt1308->status != SDW_SLAVE_ATTACHED)
+ return 0;
+
+ /* perform I/O transfers required for Slave initialization */
+ return rt1308_io_init(&slave->dev, slave);
+}
+
+static int rt1308_bus_config(struct sdw_slave *slave,
+ struct sdw_bus_params *params)
+{
+ struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
+ int ret;
+
+ memcpy(&rt1308->params, params, sizeof(*params));
+
+ ret = rt1308_clock_config(&slave->dev);
+ if (ret < 0)
+ dev_err(&slave->dev, "Invalid clk config");
+
+ return ret;
+}
+
+static int rt1308_interrupt_callback(struct sdw_slave *slave,
+ struct sdw_slave_intr_status *status)
+{
+ dev_dbg(&slave->dev,
+ "%s control_port_stat=%x", __func__, status->control_port);
+
+ return 0;
+}
+
+static int rt1308_classd_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ msleep(30);
+ snd_soc_component_update_bits(component,
+ RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
+ 0x3, 0x3);
+ msleep(40);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ snd_soc_component_update_bits(component,
+ RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
+ 0x3, 0);
+ usleep_range(150000, 200000);
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const char * const rt1308_rx_data_ch_select[] = {
+ "LR",
+ "LL",
+ "RL",
+ "RR",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1308_rx_data_ch_enum,
+ RT1308_SDW_OFFSET | (RT1308_DATA_PATH << 4), 0,
+ rt1308_rx_data_ch_select);
+
+static const struct snd_kcontrol_new rt1308_snd_controls[] = {
+
+ /* I2S Data Channel Selection */
+ SOC_ENUM("RX Channel Select", rt1308_rx_data_ch_enum),
+};
+
+static const struct snd_kcontrol_new rt1308_sto_dac_l =
+ SOC_DAPM_SINGLE_AUTODISABLE("Switch",
+ RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
+ RT1308_DVOL_MUTE_L_EN_SFT, 1, 1);
+
+static const struct snd_kcontrol_new rt1308_sto_dac_r =
+ SOC_DAPM_SINGLE_AUTODISABLE("Switch",
+ RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
+ RT1308_DVOL_MUTE_R_EN_SFT, 1, 1);
+
+static const struct snd_soc_dapm_widget rt1308_dapm_widgets[] = {
+ /* Audio Interface */
+ SND_SOC_DAPM_AIF_IN("AIF1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
+
+ /* Supply Widgets */
+ SND_SOC_DAPM_SUPPLY("MBIAS20U",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 7, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ALDO",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 6, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("DBG",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 5, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("DACL",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 4, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("CLK25M",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 2, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADC_R",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 1, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADC_L",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 0, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("DAC Power",
+ RT1308_SDW_OFFSET | (RT1308_POWER << 4), 3, 0, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("DLDO",
+ RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 5, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("VREF",
+ RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 4, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("MIXER_R",
+ RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 2, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("MIXER_L",
+ RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 1, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("MBIAS4U",
+ RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4), 0, 0, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("PLL2_LDO",
+ RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 4, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("PLL2B",
+ RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 3, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("PLL2F",
+ RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 2, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("PLL2F2",
+ RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 1, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("PLL2B2",
+ RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 0, 0, NULL, 0),
+
+ /* Digital Interface */
+ SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_SWITCH("DAC L", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_l),
+ SND_SOC_DAPM_SWITCH("DAC R", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_r),
+
+ /* Output Lines */
+ SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
+ rt1308_classd_event,
+ SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+ SND_SOC_DAPM_OUTPUT("SPOL"),
+ SND_SOC_DAPM_OUTPUT("SPOR"),
+};
+
+static const struct snd_soc_dapm_route rt1308_dapm_routes[] = {
+
+ { "DAC", NULL, "AIF1RX" },
+
+ { "DAC", NULL, "MBIAS20U" },
+ { "DAC", NULL, "ALDO" },
+ { "DAC", NULL, "DBG" },
+ { "DAC", NULL, "DACL" },
+ { "DAC", NULL, "CLK25M" },
+ { "DAC", NULL, "ADC_R" },
+ { "DAC", NULL, "ADC_L" },
+ { "DAC", NULL, "DLDO" },
+ { "DAC", NULL, "VREF" },
+ { "DAC", NULL, "MIXER_R" },
+ { "DAC", NULL, "MIXER_L" },
+ { "DAC", NULL, "MBIAS4U" },
+ { "DAC", NULL, "PLL2_LDO" },
+ { "DAC", NULL, "PLL2B" },
+ { "DAC", NULL, "PLL2F" },
+ { "DAC", NULL, "PLL2F2" },
+ { "DAC", NULL, "PLL2B2" },
+
+ { "DAC L", "Switch", "DAC" },
+ { "DAC R", "Switch", "DAC" },
+ { "DAC L", NULL, "DAC Power" },
+ { "DAC R", NULL, "DAC Power" },
+
+ { "CLASS D", NULL, "DAC L" },
+ { "CLASS D", NULL, "DAC R" },
+ { "SPOL", NULL, "CLASS D" },
+ { "SPOR", NULL, "CLASS D" },
+};
+
+static int rt1308_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
+ int direction)
+{
+ struct sdw_stream_data *stream;
+
+ stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+ if (!stream)
+ return -ENOMEM;
+
+ stream->sdw_stream = (struct sdw_stream_runtime *)sdw_stream;
+
+ /* Use tx_mask or rx_mask to configure stream tag and set dma_data */
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+ dai->playback_dma_data = stream;
+ else
+ dai->capture_dma_data = stream;
+
+ return 0;
+}
+
+static void rt1308_sdw_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sdw_stream_data *stream;
+
+ stream = snd_soc_dai_get_dma_data(dai, substream);
+ snd_soc_dai_set_dma_data(dai, substream, NULL);
+ kfree(stream);
+}
+
+static int rt1308_sdw_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 rt1308_sdw_priv *rt1308 =
+ snd_soc_component_get_drvdata(component);
+ struct sdw_stream_config stream_config;
+ struct sdw_port_config port_config;
+ enum sdw_data_direction direction;
+ struct sdw_stream_data *stream;
+ int retval, port, num_channels;
+
+ dev_dbg(dai->dev, "%s %s", __func__, dai->name);
+ stream = snd_soc_dai_get_dma_data(dai, substream);
+
+ if (!stream)
+ return -EINVAL;
+
+ if (!rt1308->sdw_slave)
+ return -EINVAL;
+
+ /* SoundWire specific configuration */
+ /* port 1 for playback */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ direction = SDW_DATA_DIR_RX;
+ port = 1;
+ } else {
+ return -EINVAL;
+ }
+
+ stream_config.frame_rate = params_rate(params);
+ stream_config.ch_count = params_channels(params);
+ stream_config.bps = snd_pcm_format_width(params_format(params));
+ stream_config.direction = direction;
+
+ num_channels = params_channels(params);
+ port_config.ch_mask = (1 << (num_channels)) - 1;
+ port_config.num = port;
+
+ retval = sdw_stream_add_slave(rt1308->sdw_slave, &stream_config,
+ &port_config, 1, stream->sdw_stream);
+ if (retval) {
+ dev_err(dai->dev, "Unable to configure port\n");
+ return retval;
+ }
+
+ return retval;
+}
+
+static int rt1308_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct rt1308_sdw_priv *rt1308 =
+ snd_soc_component_get_drvdata(component);
+ struct sdw_stream_data *stream =
+ snd_soc_dai_get_dma_data(dai, substream);
+
+ if (!rt1308->sdw_slave)
+ return -EINVAL;
+
+ sdw_stream_remove_slave(rt1308->sdw_slave, stream->sdw_stream);
+ return 0;
+}
+
+/*
+ * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
+ * port_prep are not defined for now
+ */
+static struct sdw_slave_ops rt1308_slave_ops = {
+ .read_prop = rt1308_read_prop,
+ .interrupt_callback = rt1308_interrupt_callback,
+ .update_status = rt1308_update_status,
+ .bus_config = rt1308_bus_config,
+};
+
+static const struct snd_soc_component_driver soc_component_sdw_rt1308 = {
+ .controls = rt1308_snd_controls,
+ .num_controls = ARRAY_SIZE(rt1308_snd_controls),
+ .dapm_widgets = rt1308_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(rt1308_dapm_widgets),
+ .dapm_routes = rt1308_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(rt1308_dapm_routes),
+};
+
+static const struct snd_soc_dai_ops rt1308_aif_dai_ops = {
+ .hw_params = rt1308_sdw_hw_params,
+ .hw_free = rt1308_sdw_pcm_hw_free,
+ .set_sdw_stream = rt1308_set_sdw_stream,
+ .shutdown = rt1308_sdw_shutdown,
+};
+
+#define RT1308_STEREO_RATES SNDRV_PCM_RATE_48000
+#define RT1308_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_driver rt1308_sdw_dai[] = {
+ {
+ .name = "rt1308-aif",
+ .playback = {
+ .stream_name = "DP1 Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = RT1308_STEREO_RATES,
+ .formats = RT1308_FORMATS,
+ },
+ .ops = &rt1308_aif_dai_ops,
+ },
+};
+
+static int rt1308_sdw_init(struct device *dev, struct regmap *regmap,
+ struct sdw_slave *slave)
+{
+ struct rt1308_sdw_priv *rt1308;
+ int ret;
+
+ rt1308 = devm_kzalloc(dev, sizeof(*rt1308), GFP_KERNEL);
+ if (!rt1308)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, rt1308);
+ rt1308->sdw_slave = slave;
+ rt1308->regmap = regmap;
+
+ /*
+ * Mark hw_init to false
+ * HW init will be performed when device reports present
+ */
+ rt1308->hw_init = false;
+ rt1308->first_hw_init = false;
+
+ ret = devm_snd_soc_register_component(dev,
+ &soc_component_sdw_rt1308,
+ rt1308_sdw_dai,
+ ARRAY_SIZE(rt1308_sdw_dai));
+
+ dev_dbg(&slave->dev, "%s\n", __func__);
+
+ return ret;
+}
+
+static int rt1308_sdw_probe(struct sdw_slave *slave,
+ const struct sdw_device_id *id)
+{
+ struct regmap *regmap;
+
+ /* Assign ops */
+ slave->ops = &rt1308_slave_ops;
+
+ /* Regmap Initialization */
+ regmap = devm_regmap_init_sdw(slave, &rt1308_sdw_regmap);
+ if (!regmap)
+ return -EINVAL;
+
+ rt1308_sdw_init(&slave->dev, regmap, slave);
+
+ return 0;
+}
+
+static const struct sdw_device_id rt1308_id[] = {
+ SDW_SLAVE_ENTRY(0x025d, 0x1308, 0),
+ {},
+};
+MODULE_DEVICE_TABLE(sdw, rt1308_id);
+
+static int rt1308_dev_suspend(struct device *dev)
+{
+ struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+
+ if (!rt1308->hw_init)
+ return 0;
+
+ regcache_cache_only(rt1308->regmap, true);
+
+ return 0;
+}
+
+#define RT1308_PROBE_TIMEOUT 2000
+
+static int rt1308_dev_resume(struct device *dev)
+{
+ struct sdw_slave *slave = dev_to_sdw_dev(dev);
+ struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+ unsigned long time;
+
+ if (!rt1308->hw_init)
+ return 0;
+
+ if (!slave->unattach_request)
+ goto regmap_sync;
+
+ time = wait_for_completion_timeout(&slave->initialization_complete,
+ msecs_to_jiffies(RT1308_PROBE_TIMEOUT));
+ if (!time) {
+ dev_err(&slave->dev, "Initialization not complete, timed out\n");
+ return -ETIMEDOUT;
+ }
+
+regmap_sync:
+ slave->unattach_request = 0;
+ regcache_cache_only(rt1308->regmap, false);
+ regcache_sync_region(rt1308->regmap, 0xc000, 0xcfff);
+
+ return 0;
+}
+
+static const struct dev_pm_ops rt1308_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume)
+ SET_RUNTIME_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume, NULL)
+};
+
+static struct sdw_driver rt1308_sdw_driver = {
+ .driver = {
+ .name = "rt1308",
+ .owner = THIS_MODULE,
+ .pm = &rt1308_pm,
+ },
+ .probe = rt1308_sdw_probe,
+ .ops = &rt1308_slave_ops,
+ .id_table = rt1308_id,
+};
+module_sdw_driver(rt1308_sdw_driver);
+
+MODULE_DESCRIPTION("ASoC RT1308 driver SDW");
+MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
+MODULE_LICENSE("GPL v2");
projects / openwrt / staging / blogic.git / commitdiff