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