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-rw-r--r--sound/soc/codecs/tas2770.c730
1 files changed, 730 insertions, 0 deletions
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
new file mode 100644
index 0000000000..99bf402eb5
--- /dev/null
+++ b/sound/soc/codecs/tas2770.c
@@ -0,0 +1,730 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
+// Audio Amplifier with Speaker I/V Sense
+//
+// Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/
+// Author: Tracy Yi <tracy-yi@ti.com>
+// Frank Shi <shifu0704@thundersoft.com>
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/firmware.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "tas2770.h"
+
+#define TAS2770_MDELAY 0xFFFFFFFE
+
+static void tas2770_reset(struct tas2770_priv *tas2770)
+{
+ if (tas2770->reset_gpio) {
+ gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
+ msleep(20);
+ gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ }
+
+ snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
+ TAS2770_RST);
+ usleep_range(1000, 2000);
+}
+
+static int tas2770_update_pwr_ctrl(struct tas2770_priv *tas2770)
+{
+ struct snd_soc_component *component = tas2770->component;
+ unsigned int val;
+ int ret;
+
+ if (tas2770->dac_powered)
+ val = tas2770->unmuted ?
+ TAS2770_PWR_CTRL_ACTIVE : TAS2770_PWR_CTRL_MUTE;
+ else
+ val = TAS2770_PWR_CTRL_SHUTDOWN;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK, val);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2770_codec_suspend(struct snd_soc_component *component)
+{
+ struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
+ int ret = 0;
+
+ regcache_cache_only(tas2770->regmap, true);
+ regcache_mark_dirty(tas2770->regmap);
+
+ if (tas2770->sdz_gpio) {
+ gpiod_set_value_cansleep(tas2770->sdz_gpio, 0);
+ } else {
+ ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK,
+ TAS2770_PWR_CTRL_SHUTDOWN);
+ if (ret < 0) {
+ regcache_cache_only(tas2770->regmap, false);
+ regcache_sync(tas2770->regmap);
+ return ret;
+ }
+
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int tas2770_codec_resume(struct snd_soc_component *component)
+{
+ struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ if (tas2770->sdz_gpio) {
+ gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
+ usleep_range(1000, 2000);
+ } else {
+ ret = tas2770_update_pwr_ctrl(tas2770);
+ if (ret < 0)
+ return ret;
+ }
+
+ regcache_cache_only(tas2770->regmap, false);
+
+ return regcache_sync(tas2770->regmap);
+}
+#else
+#define tas2770_codec_suspend NULL
+#define tas2770_codec_resume NULL
+#endif
+
+static const char * const tas2770_ASI1_src[] = {
+ "I2C offset", "Left", "Right", "LeftRightDiv2",
+};
+
+static SOC_ENUM_SINGLE_DECL(
+ tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
+ 4, tas2770_ASI1_src);
+
+static const struct snd_kcontrol_new tas2770_asi1_mux =
+ SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
+
+static int tas2770_dac_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);
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+ int ret;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ tas2770->dac_powered = 1;
+ ret = tas2770_update_pwr_ctrl(tas2770);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ tas2770->dac_powered = 0;
+ ret = tas2770_update_pwr_ctrl(tas2770);
+ break;
+ default:
+ dev_err(tas2770->dev, "Not supported evevt\n");
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct snd_kcontrol_new isense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
+static const struct snd_kcontrol_new vsense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
+
+static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux),
+ SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch),
+ SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch),
+ SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_OUTPUT("OUT"),
+ SND_SOC_DAPM_SIGGEN("VMON"),
+ SND_SOC_DAPM_SIGGEN("IMON")
+};
+
+static const struct snd_soc_dapm_route tas2770_audio_map[] = {
+ {"ASI1 Sel", "I2C offset", "ASI1"},
+ {"ASI1 Sel", "Left", "ASI1"},
+ {"ASI1 Sel", "Right", "ASI1"},
+ {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
+ {"DAC", NULL, "ASI1 Sel"},
+ {"OUT", NULL, "DAC"},
+ {"ISENSE", "Switch", "IMON"},
+ {"VSENSE", "Switch", "VMON"},
+};
+
+static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+
+ tas2770->unmuted = !mute;
+ return tas2770_update_pwr_ctrl(tas2770);
+}
+
+static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
+{
+ int ret;
+ struct snd_soc_component *component = tas2770->component;
+
+ switch (bitwidth) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXW_MASK,
+ TAS2770_TDM_CFG_REG2_RXW_16BITS);
+ tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXW_MASK,
+ TAS2770_TDM_CFG_REG2_RXW_24BITS);
+ tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXW_MASK,
+ TAS2770_TDM_CFG_REG2_RXW_32BITS);
+ tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5,
+ TAS2770_TDM_CFG_REG5_VSNS_MASK |
+ TAS2770_TDM_CFG_REG5_50_MASK,
+ TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
+ tas2770->v_sense_slot);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6,
+ TAS2770_TDM_CFG_REG6_ISNS_MASK |
+ TAS2770_TDM_CFG_REG6_50_MASK,
+ TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
+ tas2770->i_sense_slot);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
+{
+ struct snd_soc_component *component = tas2770->component;
+ int ramp_rate_val;
+ int ret;
+
+ switch (samplerate) {
+ case 48000:
+ ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
+ TAS2770_TDM_CFG_REG0_31_44_1_48KHZ;
+ break;
+ case 44100:
+ ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
+ TAS2770_TDM_CFG_REG0_31_44_1_48KHZ;
+ break;
+ case 96000:
+ ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
+ TAS2770_TDM_CFG_REG0_31_88_2_96KHZ;
+ break;
+ case 88200:
+ ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
+ TAS2770_TDM_CFG_REG0_31_88_2_96KHZ;
+ break;
+ case 192000:
+ ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
+ TAS2770_TDM_CFG_REG0_31_176_4_192KHZ;
+ break;
+ case 176400:
+ ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
+ TAS2770_TDM_CFG_REG0_31_176_4_192KHZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK |
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ ramp_rate_val);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2770_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 tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = tas2770_set_bitwidth(tas2770, params_format(params));
+ if (ret)
+ return ret;
+
+ return tas2770_set_samplerate(tas2770, params_rate(params));
+}
+
+static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+ u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0;
+ int ret;
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ break;
+ default:
+ dev_err(tas2770->dev, "ASI invalid DAI clocking\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_IF:
+ invert_fpol = 1;
+ fallthrough;
+ case SND_SOC_DAIFMT_NB_NF:
+ asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ invert_fpol = 1;
+ fallthrough;
+ case SND_SOC_DAIFMT_IB_NF:
+ asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
+ break;
+ default:
+ dev_err(tas2770->dev, "ASI format Inverse is not found\n");
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
+ TAS2770_TDM_CFG_REG1_RX_MASK,
+ asi_cfg_1);
+ if (ret < 0)
+ return ret;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ tdm_rx_start_slot = 1;
+ fpol_preinv = 0;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ tdm_rx_start_slot = 0;
+ fpol_preinv = 1;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ tdm_rx_start_slot = 1;
+ fpol_preinv = 1;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ tdm_rx_start_slot = 0;
+ fpol_preinv = 1;
+ break;
+ default:
+ dev_err(tas2770->dev,
+ "DAI Format is not found, fmt=0x%x\n", fmt);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
+ TAS2770_TDM_CFG_REG1_MASK,
+ (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT));
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_FPOL_MASK,
+ (fpol_preinv ^ invert_fpol)
+ ? TAS2770_TDM_CFG_REG0_FPOL_RSING
+ : TAS2770_TDM_CFG_REG0_FPOL_FALING);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tas2770_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;
+ int left_slot, right_slot;
+ int ret;
+
+ if (tx_mask == 0 || rx_mask != 0)
+ return -EINVAL;
+
+ left_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << left_slot);
+ if (tx_mask == 0) {
+ right_slot = left_slot;
+ } else {
+ right_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << right_slot);
+ }
+
+ if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
+ return -EINVAL;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
+ TAS2770_TDM_CFG_REG3_30_MASK,
+ (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT));
+ if (ret < 0)
+ return ret;
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
+ TAS2770_TDM_CFG_REG3_RXS_MASK,
+ (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));
+ if (ret < 0)
+ return ret;
+
+ switch (slot_width) {
+ case 16:
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXS_MASK,
+ TAS2770_TDM_CFG_REG2_RXS_16BITS);
+ break;
+ case 24:
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXS_MASK,
+ TAS2770_TDM_CFG_REG2_RXS_24BITS);
+ break;
+ case 32:
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXS_MASK,
+ TAS2770_TDM_CFG_REG2_RXS_32BITS);
+ break;
+ case 0:
+ /* Do not change slot width */
+ ret = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops tas2770_dai_ops = {
+ .mute_stream = tas2770_mute,
+ .hw_params = tas2770_hw_params,
+ .set_fmt = tas2770_set_fmt,
+ .set_tdm_slot = tas2770_set_dai_tdm_slot,
+ .no_capture_mute = 1,
+};
+
+#define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+#define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
+ SNDRV_PCM_RATE_96000 |\
+ SNDRV_PCM_RATE_192000\
+ )
+
+static struct snd_soc_dai_driver tas2770_dai_driver[] = {
+ {
+ .name = "tas2770 ASI1",
+ .id = 0,
+ .playback = {
+ .stream_name = "ASI1 Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = TAS2770_RATES,
+ .formats = TAS2770_FORMATS,
+ },
+ .capture = {
+ .stream_name = "ASI1 Capture",
+ .channels_min = 0,
+ .channels_max = 2,
+ .rates = TAS2770_RATES,
+ .formats = TAS2770_FORMATS,
+ },
+ .ops = &tas2770_dai_ops,
+ .symmetric_rate = 1,
+ },
+};
+
+static const struct regmap_config tas2770_i2c_regmap;
+
+static int tas2770_codec_probe(struct snd_soc_component *component)
+{
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+
+ tas2770->component = component;
+
+ if (tas2770->sdz_gpio) {
+ gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
+ usleep_range(1000, 2000);
+ }
+
+ tas2770_reset(tas2770);
+ regmap_reinit_cache(tas2770->regmap, &tas2770_i2c_regmap);
+
+ return 0;
+}
+
+static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
+static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
+
+static const struct snd_kcontrol_new tas2770_snd_controls[] = {
+ SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2,
+ 0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume),
+ SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0, 0, 0x14, 0,
+ tas2770_digital_tlv),
+};
+
+static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
+ .probe = tas2770_codec_probe,
+ .suspend = tas2770_codec_suspend,
+ .resume = tas2770_codec_resume,
+ .controls = tas2770_snd_controls,
+ .num_controls = ARRAY_SIZE(tas2770_snd_controls),
+ .dapm_widgets = tas2770_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets),
+ .dapm_routes = tas2770_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(tas2770_audio_map),
+ .idle_bias_on = 1,
+ .endianness = 1,
+};
+
+static int tas2770_register_codec(struct tas2770_priv *tas2770)
+{
+ return devm_snd_soc_register_component(tas2770->dev,
+ &soc_component_driver_tas2770,
+ tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));
+}
+
+static const struct reg_default tas2770_reg_defaults[] = {
+ { TAS2770_PAGE, 0x00 },
+ { TAS2770_SW_RST, 0x00 },
+ { TAS2770_PWR_CTRL, 0x0e },
+ { TAS2770_PLAY_CFG_REG0, 0x10 },
+ { TAS2770_PLAY_CFG_REG1, 0x01 },
+ { TAS2770_PLAY_CFG_REG2, 0x00 },
+ { TAS2770_MSC_CFG_REG0, 0x07 },
+ { TAS2770_TDM_CFG_REG1, 0x02 },
+ { TAS2770_TDM_CFG_REG2, 0x0a },
+ { TAS2770_TDM_CFG_REG3, 0x10 },
+ { TAS2770_INT_MASK_REG0, 0xfc },
+ { TAS2770_INT_MASK_REG1, 0xb1 },
+ { TAS2770_INT_CFG, 0x05 },
+ { TAS2770_MISC_IRQ, 0x81 },
+ { TAS2770_CLK_CGF, 0x0c },
+
+};
+
+static bool tas2770_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS2770_PAGE: /* regmap implementation requires this */
+ case TAS2770_SW_RST: /* always clears after write */
+ case TAS2770_BO_PRV_REG0:/* has a self clearing bit */
+ case TAS2770_LVE_INT_REG0:
+ case TAS2770_LVE_INT_REG1:
+ case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */
+ case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */
+ case TAS2770_VBAT_MSB:
+ case TAS2770_VBAT_LSB:
+ case TAS2770_TEMP_MSB:
+ case TAS2770_TEMP_LSB:
+ return true;
+ }
+
+ return false;
+}
+
+static bool tas2770_writeable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS2770_LVE_INT_REG0:
+ case TAS2770_LVE_INT_REG1:
+ case TAS2770_LAT_INT_REG0:
+ case TAS2770_LAT_INT_REG1:
+ case TAS2770_VBAT_MSB:
+ case TAS2770_VBAT_LSB:
+ case TAS2770_TEMP_MSB:
+ case TAS2770_TEMP_LSB:
+ case TAS2770_TDM_CLK_DETC:
+ case TAS2770_REV_AND_GPID:
+ return false;
+ }
+
+ return true;
+}
+
+static const struct regmap_range_cfg tas2770_regmap_ranges[] = {
+ {
+ .range_min = 0,
+ .range_max = 1 * 128,
+ .selector_reg = TAS2770_PAGE,
+ .selector_mask = 0xff,
+ .selector_shift = 0,
+ .window_start = 0,
+ .window_len = 128,
+ },
+};
+
+static const struct regmap_config tas2770_i2c_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .writeable_reg = tas2770_writeable,
+ .volatile_reg = tas2770_volatile,
+ .reg_defaults = tas2770_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .ranges = tas2770_regmap_ranges,
+ .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges),
+ .max_register = 1 * 128,
+};
+
+static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
+{
+ int rc = 0;
+
+ rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
+ &tas2770->i_sense_slot);
+ if (rc) {
+ dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
+ "ti,imon-slot-no");
+
+ tas2770->i_sense_slot = 0;
+ }
+
+ rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
+ &tas2770->v_sense_slot);
+ if (rc) {
+ dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
+ "ti,vmon-slot-no");
+
+ tas2770->v_sense_slot = 2;
+ }
+
+ tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
+ if (IS_ERR(tas2770->sdz_gpio)) {
+ if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
+ tas2770->sdz_gpio = NULL;
+ }
+
+ return 0;
+}
+
+static int tas2770_i2c_probe(struct i2c_client *client)
+{
+ struct tas2770_priv *tas2770;
+ int result;
+
+ tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv),
+ GFP_KERNEL);
+ if (!tas2770)
+ return -ENOMEM;
+
+ tas2770->dev = &client->dev;
+ i2c_set_clientdata(client, tas2770);
+ dev_set_drvdata(&client->dev, tas2770);
+
+ tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);
+ if (IS_ERR(tas2770->regmap)) {
+ result = PTR_ERR(tas2770->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ result);
+ return result;
+ }
+
+ if (client->dev.of_node) {
+ result = tas2770_parse_dt(&client->dev, tas2770);
+ if (result) {
+ dev_err(tas2770->dev, "%s: Failed to parse devicetree\n",
+ __func__);
+ return result;
+ }
+ }
+
+ tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(tas2770->reset_gpio)) {
+ if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {
+ tas2770->reset_gpio = NULL;
+ return -EPROBE_DEFER;
+ }
+ }
+
+ result = tas2770_register_codec(tas2770);
+ if (result)
+ dev_err(tas2770->dev, "Register codec failed.\n");
+
+ return result;
+}
+
+static const struct i2c_device_id tas2770_i2c_id[] = {
+ { "tas2770", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tas2770_of_match[] = {
+ { .compatible = "ti,tas2770" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tas2770_of_match);
+#endif
+
+static struct i2c_driver tas2770_i2c_driver = {
+ .driver = {
+ .name = "tas2770",
+ .of_match_table = of_match_ptr(tas2770_of_match),
+ },
+ .probe = tas2770_i2c_probe,
+ .id_table = tas2770_i2c_id,
+};
+module_i2c_driver(tas2770_i2c_driver);
+
+MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>");
+MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");
+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 06:08:29 +0000