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-rw-r--r--sound/soc/codecs/tas2552.c773
1 files changed, 773 insertions, 0 deletions
diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
new file mode 100644
index 000000000..8c9dc318b
--- /dev/null
+++ b/sound/soc/codecs/tas2552.c
@@ -0,0 +1,773 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <sound/tas2552-plat.h>
+#include <dt-bindings/sound/tas2552.h>
+
+#include "tas2552.h"
+
+static const struct reg_default tas2552_reg_defs[] = {
+ {TAS2552_CFG_1, 0x22},
+ {TAS2552_CFG_3, 0x80},
+ {TAS2552_DOUT, 0x00},
+ {TAS2552_OUTPUT_DATA, 0xc0},
+ {TAS2552_PDM_CFG, 0x01},
+ {TAS2552_PGA_GAIN, 0x00},
+ {TAS2552_BOOST_APT_CTRL, 0x0f},
+ {TAS2552_RESERVED_0D, 0xbe},
+ {TAS2552_LIMIT_RATE_HYS, 0x08},
+ {TAS2552_CFG_2, 0xef},
+ {TAS2552_SER_CTRL_1, 0x00},
+ {TAS2552_SER_CTRL_2, 0x00},
+ {TAS2552_PLL_CTRL_1, 0x10},
+ {TAS2552_PLL_CTRL_2, 0x00},
+ {TAS2552_PLL_CTRL_3, 0x00},
+ {TAS2552_BTIP, 0x8f},
+ {TAS2552_BTS_CTRL, 0x80},
+ {TAS2552_LIMIT_RELEASE, 0x04},
+ {TAS2552_LIMIT_INT_COUNT, 0x00},
+ {TAS2552_EDGE_RATE_CTRL, 0x40},
+ {TAS2552_VBAT_DATA, 0x00},
+};
+
+#define TAS2552_NUM_SUPPLIES 3
+static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
+ "vbat", /* vbat voltage */
+ "iovdd", /* I/O Voltage */
+ "avdd", /* Analog DAC Voltage */
+};
+
+struct tas2552_data {
+ struct snd_soc_component *component;
+ struct regmap *regmap;
+ struct i2c_client *tas2552_client;
+ struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
+ struct gpio_desc *enable_gpio;
+ unsigned char regs[TAS2552_VBAT_DATA];
+ unsigned int pll_clkin;
+ int pll_clk_id;
+ unsigned int pdm_clk;
+ int pdm_clk_id;
+
+ unsigned int dai_fmt;
+ unsigned int tdm_delay;
+};
+
+static int tas2552_post_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:
+ snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);
+ snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),
+ (1 << 5));
+ snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);
+ snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,
+ TAS2552_SWS);
+ snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);
+ snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
+ snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);
+ break;
+ }
+ return 0;
+}
+
+/* Input mux controls */
+static const char * const tas2552_input_texts[] = {
+ "Digital", "Analog" };
+static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
+ tas2552_input_texts);
+
+static const struct snd_kcontrol_new tas2552_input_mux_control =
+ SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
+
+static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
+{
+ SND_SOC_DAPM_INPUT("IN"),
+
+ /* MUX Controls */
+ SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
+ &tas2552_input_mux_control),
+
+ SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
+ SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
+
+ SND_SOC_DAPM_OUTPUT("OUT")
+};
+
+static const struct snd_soc_dapm_route tas2552_audio_map[] = {
+ {"DAC", NULL, "DAC IN"},
+ {"Input selection", "Digital", "DAC"},
+ {"Input selection", "Analog", "IN"},
+ {"ClassD", NULL, "Input selection"},
+ {"OUT", NULL, "ClassD"},
+ {"ClassD", NULL, "PLL"},
+};
+
+#ifdef CONFIG_PM
+static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
+{
+ u8 cfg1_reg = 0;
+
+ if (!tas2552->component)
+ return;
+
+ if (sw_shutdown)
+ cfg1_reg = TAS2552_SWS;
+
+ snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,
+ cfg1_reg);
+}
+#endif
+
+static int tas2552_setup_pll(struct snd_soc_component *component,
+ struct snd_pcm_hw_params *params)
+{
+ struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+ bool bypass_pll = false;
+ unsigned int pll_clk = params_rate(params) * 512;
+ unsigned int pll_clkin = tas2552->pll_clkin;
+ u8 pll_enable;
+
+ if (!pll_clkin) {
+ if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
+ return -EINVAL;
+
+ pll_clkin = snd_soc_params_to_bclk(params);
+ pll_clkin += tas2552->tdm_delay;
+ }
+
+ pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
+ snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
+
+ if (pll_clkin == pll_clk)
+ bypass_pll = true;
+
+ if (bypass_pll) {
+ /* By pass the PLL configuration */
+ snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,
+ TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
+ } else {
+ /* Fill in the PLL control registers for J & D
+ * pll_clk = (.5 * pll_clkin * J.D) / 2^p
+ * Need to fill in J and D here based on incoming freq
+ */
+ unsigned int d, q, t;
+ u8 j;
+ u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
+ u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1);
+
+ p = (p >> 7);
+
+recalc:
+ t = (pll_clk * 2) << p;
+ j = t / pll_clkin;
+ d = t % pll_clkin;
+ t = pll_clkin / 10000;
+ q = d / (t + 1);
+ d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;
+
+ if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
+ if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
+ pll_clkin = 1800000;
+ pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
+ TAS2552_PLL_SRC_MASK;
+ } else {
+ pll_clkin = snd_soc_params_to_bclk(params);
+ pll_clkin += tas2552->tdm_delay;
+ pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
+ TAS2552_PLL_SRC_MASK;
+ }
+ goto recalc;
+ }
+
+ snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
+ pll_sel);
+
+ snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,
+ TAS2552_PLL_J_MASK, j);
+ /* Will clear the PLL_BYPASS bit */
+ snd_soc_component_write(component, TAS2552_PLL_CTRL_2,
+ TAS2552_PLL_D_UPPER(d));
+ snd_soc_component_write(component, TAS2552_PLL_CTRL_3,
+ TAS2552_PLL_D_LOWER(d));
+ }
+
+ /* Restore PLL status */
+ snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
+ pll_enable);
+
+ return 0;
+}
+
+static int tas2552_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 tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+ int cpf;
+ u8 ser_ctrl1_reg, wclk_rate;
+
+ switch (params_width(params)) {
+ case 16:
+ ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
+ cpf = 32 + tas2552->tdm_delay;
+ break;
+ case 20:
+ ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
+ cpf = 64 + tas2552->tdm_delay;
+ break;
+ case 24:
+ ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
+ cpf = 64 + tas2552->tdm_delay;
+ break;
+ case 32:
+ ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
+ cpf = 64 + tas2552->tdm_delay;
+ break;
+ default:
+ dev_err(component->dev, "Not supported sample size: %d\n",
+ params_width(params));
+ return -EINVAL;
+ }
+
+ if (cpf <= 32)
+ ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
+ else if (cpf <= 64)
+ ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
+ else if (cpf <= 128)
+ ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
+ else
+ ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
+
+ snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,
+ TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
+ ser_ctrl1_reg);
+
+ switch (params_rate(params)) {
+ case 8000:
+ wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
+ break;
+ case 11025:
+ case 12000:
+ wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
+ break;
+ case 16000:
+ wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
+ break;
+ case 22050:
+ case 24000:
+ wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
+ break;
+ case 32000:
+ wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
+ break;
+ case 44100:
+ case 48000:
+ wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
+ break;
+ case 88200:
+ case 96000:
+ wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
+ break;
+ case 176400:
+ case 192000:
+ wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
+ break;
+ default:
+ dev_err(component->dev, "Not supported sample rate: %d\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
+ wclk_rate);
+
+ return tas2552_setup_pll(component, params);
+}
+
+#define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \
+ TAS2552_WCLKDIR | \
+ TAS2552_DATAFORMAT_MASK)
+static int tas2552_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+ int delay = 0;
+
+ /* TDM slot selection only valid in DSP_A/_B mode */
+ if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
+ delay += (tas2552->tdm_delay + 1);
+ else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
+ delay += tas2552->tdm_delay;
+
+ /* Configure data delay */
+ snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);
+
+ return 0;
+}
+
+static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+ u8 serial_format;
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ serial_format = 0x00;
+ break;
+ case SND_SOC_DAIFMT_CBC_CFP:
+ serial_format = TAS2552_WCLKDIR;
+ break;
+ case SND_SOC_DAIFMT_CBP_CFC:
+ serial_format = TAS2552_BCLKDIR;
+ break;
+ case SND_SOC_DAIFMT_CBP_CFP:
+ serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
+ break;
+ default:
+ dev_vdbg(component->dev, "DAI Format master is not found\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
+ SND_SOC_DAIFMT_INV_MASK)) {
+ case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
+ break;
+ case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
+ case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
+ serial_format |= TAS2552_DATAFORMAT_DSP;
+ break;
+ case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
+ serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
+ break;
+ case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
+ serial_format |= TAS2552_DATAFORMAT_LEFT_J;
+ break;
+ default:
+ dev_vdbg(component->dev, "DAI Format is not found\n");
+ return -EINVAL;
+ }
+ tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
+
+ snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
+ serial_format);
+ return 0;
+}
+
+static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+ u8 reg, mask, val;
+
+ switch (clk_id) {
+ case TAS2552_PLL_CLKIN_MCLK:
+ case TAS2552_PLL_CLKIN_IVCLKIN:
+ if (freq < 512000 || freq > 24576000) {
+ /* out of range PLL_CLKIN, fall back to use BCLK */
+ dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",
+ freq);
+ clk_id = TAS2552_PLL_CLKIN_BCLK;
+ freq = 0;
+ }
+ fallthrough;
+ case TAS2552_PLL_CLKIN_BCLK:
+ case TAS2552_PLL_CLKIN_1_8_FIXED:
+ mask = TAS2552_PLL_SRC_MASK;
+ val = (clk_id << 3) & mask; /* bit 4:5 in the register */
+ reg = TAS2552_CFG_1;
+ tas2552->pll_clk_id = clk_id;
+ tas2552->pll_clkin = freq;
+ break;
+ case TAS2552_PDM_CLK_PLL:
+ case TAS2552_PDM_CLK_IVCLKIN:
+ case TAS2552_PDM_CLK_BCLK:
+ case TAS2552_PDM_CLK_MCLK:
+ mask = TAS2552_PDM_CLK_SEL_MASK;
+ val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
+ reg = TAS2552_PDM_CFG;
+ tas2552->pdm_clk_id = clk_id;
+ tas2552->pdm_clk = freq;
+ break;
+ default:
+ dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
+ return -EINVAL;
+ }
+
+ snd_soc_component_update_bits(component, reg, mask, val);
+
+ return 0;
+}
+
+static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask, unsigned int rx_mask,
+ int slots, int slot_width)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+ unsigned int lsb;
+
+ if (unlikely(!tx_mask)) {
+ dev_err(component->dev, "tx masks need to be non 0\n");
+ return -EINVAL;
+ }
+
+ /* TDM based on DSP mode requires slots to be adjacent */
+ lsb = __ffs(tx_mask);
+ if ((lsb + 1) != __fls(tx_mask)) {
+ dev_err(component->dev, "Invalid mask, slots must be adjacent\n");
+ return -EINVAL;
+ }
+
+ tas2552->tdm_delay = lsb * slot_width;
+
+ /* DOUT in high-impedance on inactive bit clocks */
+ snd_soc_component_update_bits(component, TAS2552_DOUT,
+ TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
+
+ return 0;
+}
+
+static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ u8 cfg1_reg = 0;
+ struct snd_soc_component *component = dai->component;
+
+ if (mute)
+ cfg1_reg |= TAS2552_MUTE;
+
+ snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2552_runtime_suspend(struct device *dev)
+{
+ struct tas2552_data *tas2552 = dev_get_drvdata(dev);
+
+ tas2552_sw_shutdown(tas2552, 1);
+
+ regcache_cache_only(tas2552->regmap, true);
+ regcache_mark_dirty(tas2552->regmap);
+
+ gpiod_set_value(tas2552->enable_gpio, 0);
+
+ return 0;
+}
+
+static int tas2552_runtime_resume(struct device *dev)
+{
+ struct tas2552_data *tas2552 = dev_get_drvdata(dev);
+
+ gpiod_set_value(tas2552->enable_gpio, 1);
+
+ tas2552_sw_shutdown(tas2552, 0);
+
+ regcache_cache_only(tas2552->regmap, false);
+ regcache_sync(tas2552->regmap);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops tas2552_pm = {
+ SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
+ NULL)
+};
+
+static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
+ .hw_params = tas2552_hw_params,
+ .prepare = tas2552_prepare,
+ .set_sysclk = tas2552_set_dai_sysclk,
+ .set_fmt = tas2552_set_dai_fmt,
+ .set_tdm_slot = tas2552_set_dai_tdm_slot,
+ .mute_stream = tas2552_mute,
+ .no_capture_mute = 1,
+};
+
+/* Formats supported by TAS2552 driver. */
+#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+/* TAS2552 dai structure. */
+static struct snd_soc_dai_driver tas2552_dai[] = {
+ {
+ .name = "tas2552-amplifier",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = TAS2552_FORMATS,
+ },
+ .ops = &tas2552_speaker_dai_ops,
+ },
+};
+
+/*
+ * DAC digital volumes. From -7 to 24 dB in 1 dB steps
+ */
+static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
+
+static const char * const tas2552_din_source_select[] = {
+ "Muted",
+ "Left",
+ "Right",
+ "Left + Right average",
+};
+static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
+ TAS2552_CFG_3, 3,
+ tas2552_din_source_select);
+
+static const struct snd_kcontrol_new tas2552_snd_controls[] = {
+ SOC_SINGLE_TLV("Speaker Driver Playback Volume",
+ TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
+ SOC_ENUM("DIN source", tas2552_din_source_enum),
+};
+
+static int tas2552_component_probe(struct snd_soc_component *component)
+{
+ struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ tas2552->component = component;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+
+ if (ret != 0) {
+ dev_err(component->dev, "Failed to enable supplies: %d\n",
+ ret);
+ return ret;
+ }
+
+ gpiod_set_value(tas2552->enable_gpio, 1);
+
+ ret = pm_runtime_resume_and_get(component->dev);
+ if (ret < 0) {
+ dev_err(component->dev, "Enabling device failed: %d\n",
+ ret);
+ goto probe_fail;
+ }
+
+ snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
+ snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
+ TAS2552_DIN_SRC_SEL_AVG_L_R);
+ snd_soc_component_write(component, TAS2552_OUTPUT_DATA,
+ TAS2552_PDM_DATA_SEL_V_I |
+ TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
+ snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
+ TAS2552_APT_THRESH_20_17);
+
+ snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
+ TAS2552_LIM_EN);
+
+ return 0;
+
+probe_fail:
+ pm_runtime_put_noidle(component->dev);
+ gpiod_set_value(tas2552->enable_gpio, 0);
+
+ regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+ return ret;
+}
+
+static void tas2552_component_remove(struct snd_soc_component *component)
+{
+ struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+
+ pm_runtime_put(component->dev);
+
+ gpiod_set_value(tas2552->enable_gpio, 0);
+};
+
+#ifdef CONFIG_PM
+static int tas2552_suspend(struct snd_soc_component *component)
+{
+ struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+
+ if (ret != 0)
+ dev_err(component->dev, "Failed to disable supplies: %d\n",
+ ret);
+ return ret;
+}
+
+static int tas2552_resume(struct snd_soc_component *component)
+{
+ struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
+ tas2552->supplies);
+
+ if (ret != 0) {
+ dev_err(component->dev, "Failed to enable supplies: %d\n",
+ ret);
+ }
+
+ return ret;
+}
+#else
+#define tas2552_suspend NULL
+#define tas2552_resume NULL
+#endif
+
+static const struct snd_soc_component_driver soc_component_dev_tas2552 = {
+ .probe = tas2552_component_probe,
+ .remove = tas2552_component_remove,
+ .suspend = tas2552_suspend,
+ .resume = tas2552_resume,
+ .controls = tas2552_snd_controls,
+ .num_controls = ARRAY_SIZE(tas2552_snd_controls),
+ .dapm_widgets = tas2552_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets),
+ .dapm_routes = tas2552_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map),
+ .idle_bias_on = 1,
+ .endianness = 1,
+};
+
+static const struct regmap_config tas2552_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = TAS2552_MAX_REG,
+ .reg_defaults = tas2552_reg_defs,
+ .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int tas2552_probe(struct i2c_client *client)
+{
+ struct device *dev;
+ struct tas2552_data *data;
+ int ret;
+ int i;
+
+ dev = &client->dev;
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(data->enable_gpio))
+ return PTR_ERR(data->enable_gpio);
+
+ data->tas2552_client = client;
+ data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
+ if (IS_ERR(data->regmap)) {
+ ret = PTR_ERR(data->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
+ data->supplies[i].supply = tas2552_supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
+ data->supplies);
+ if (ret != 0) {
+ dev_err(dev, "Failed to request supplies: %d\n", ret);
+ return ret;
+ }
+
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+ pm_runtime_use_autosuspend(&client->dev);
+ pm_runtime_enable(&client->dev);
+ pm_runtime_mark_last_busy(&client->dev);
+ pm_runtime_put_sync_autosuspend(&client->dev);
+
+ dev_set_drvdata(&client->dev, data);
+
+ ret = devm_snd_soc_register_component(&client->dev,
+ &soc_component_dev_tas2552,
+ tas2552_dai, ARRAY_SIZE(tas2552_dai));
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to register component: %d\n", ret);
+ pm_runtime_get_noresume(&client->dev);
+ }
+
+ return ret;
+}
+
+static void tas2552_i2c_remove(struct i2c_client *client)
+{
+ pm_runtime_disable(&client->dev);
+}
+
+static const struct i2c_device_id tas2552_id[] = {
+ { "tas2552", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2552_id);
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tas2552_of_match[] = {
+ { .compatible = "ti,tas2552", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tas2552_of_match);
+#endif
+
+static struct i2c_driver tas2552_i2c_driver = {
+ .driver = {
+ .name = "tas2552",
+ .of_match_table = of_match_ptr(tas2552_of_match),
+ .pm = &tas2552_pm,
+ },
+ .probe = tas2552_probe,
+ .remove = tas2552_i2c_remove,
+ .id_table = tas2552_id,
+};
+
+module_i2c_driver(tas2552_i2c_driver);
+
+MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
+MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 18:53:14 +0000