diff options
Diffstat (limited to 'sound/soc/codecs/tlv320dac33.c')
| -rw-r--r-- | sound/soc/codecs/tlv320dac33.c | 1662 |
1 files changed, 1662 insertions, 0 deletions
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c new file mode 100644 index 00000000..faa5e9fb --- /dev/null +++ b/sound/soc/codecs/tlv320dac33.c @@ -0,0 +1,1662 @@ +/* + * ALSA SoC Texas Instruments TLV320DAC33 codec driver + * + * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> + * + * Copyright: (C) 2009 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/gpio.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/initval.h> +#include <sound/tlv.h> + +#include <sound/tlv320dac33-plat.h> +#include "tlv320dac33.h" + +/* + * The internal FIFO is 24576 bytes long + * It can be configured to hold 16bit or 24bit samples + * In 16bit configuration the FIFO can hold 6144 stereo samples + * In 24bit configuration the FIFO can hold 4096 stereo samples + */ +#define DAC33_FIFO_SIZE_16BIT 6144 +#define DAC33_FIFO_SIZE_24BIT 4096 +#define DAC33_MODE7_MARGIN 10 /* Safety margin for FIFO in Mode7 */ + +#define BURST_BASEFREQ_HZ 49152000 + +#define SAMPLES_TO_US(rate, samples) \ + (1000000000 / ((rate * 1000) / samples)) + +#define US_TO_SAMPLES(rate, us) \ + (rate / (1000000 / (us < 1000000 ? us : 1000000))) + +#define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) \ + ((samples * 5000) / ((burstrate * 5000) / (burstrate - playrate))) + +static void dac33_calculate_times(struct snd_pcm_substream *substream); +static int dac33_prepare_chip(struct snd_pcm_substream *substream); + +enum dac33_state { + DAC33_IDLE = 0, + DAC33_PREFILL, + DAC33_PLAYBACK, + DAC33_FLUSH, +}; + +enum dac33_fifo_modes { + DAC33_FIFO_BYPASS = 0, + DAC33_FIFO_MODE1, + DAC33_FIFO_MODE7, + DAC33_FIFO_LAST_MODE, +}; + +#define DAC33_NUM_SUPPLIES 3 +static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = { + "AVDD", + "DVDD", + "IOVDD", +}; + +struct tlv320dac33_priv { + struct mutex mutex; + struct workqueue_struct *dac33_wq; + struct work_struct work; + struct snd_soc_codec *codec; + struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES]; + struct snd_pcm_substream *substream; + int power_gpio; + int chip_power; + int irq; + unsigned int refclk; + + unsigned int alarm_threshold; /* set to be half of LATENCY_TIME_MS */ + enum dac33_fifo_modes fifo_mode;/* FIFO mode selection */ + unsigned int fifo_size; /* Size of the FIFO in samples */ + unsigned int nsample; /* burst read amount from host */ + int mode1_latency; /* latency caused by the i2c writes in + * us */ + u8 burst_bclkdiv; /* BCLK divider value in burst mode */ + unsigned int burst_rate; /* Interface speed in Burst modes */ + + int keep_bclk; /* Keep the BCLK continuously running + * in FIFO modes */ + spinlock_t lock; + unsigned long long t_stamp1; /* Time stamp for FIFO modes to */ + unsigned long long t_stamp2; /* calculate the FIFO caused delay */ + + unsigned int mode1_us_burst; /* Time to burst read n number of + * samples */ + unsigned int mode7_us_to_lthr; /* Time to reach lthr from uthr */ + + unsigned int uthr; + + enum dac33_state state; + enum snd_soc_control_type control_type; + void *control_data; +}; + +static const u8 dac33_reg[DAC33_CACHEREGNUM] = { +0x00, 0x00, 0x00, 0x00, /* 0x00 - 0x03 */ +0x00, 0x00, 0x00, 0x00, /* 0x04 - 0x07 */ +0x00, 0x00, 0x00, 0x00, /* 0x08 - 0x0b */ +0x00, 0x00, 0x00, 0x00, /* 0x0c - 0x0f */ +0x00, 0x00, 0x00, 0x00, /* 0x10 - 0x13 */ +0x00, 0x00, 0x00, 0x00, /* 0x14 - 0x17 */ +0x00, 0x00, 0x00, 0x00, /* 0x18 - 0x1b */ +0x00, 0x00, 0x00, 0x00, /* 0x1c - 0x1f */ +0x00, 0x00, 0x00, 0x00, /* 0x20 - 0x23 */ +0x00, 0x00, 0x00, 0x00, /* 0x24 - 0x27 */ +0x00, 0x00, 0x00, 0x00, /* 0x28 - 0x2b */ +0x00, 0x00, 0x00, 0x80, /* 0x2c - 0x2f */ +0x80, 0x00, 0x00, 0x00, /* 0x30 - 0x33 */ +0x00, 0x00, 0x00, 0x00, /* 0x34 - 0x37 */ +0x00, 0x00, /* 0x38 - 0x39 */ +/* Registers 0x3a - 0x3f are reserved */ + 0x00, 0x00, /* 0x3a - 0x3b */ +0x00, 0x00, 0x00, 0x00, /* 0x3c - 0x3f */ + +0x00, 0x00, 0x00, 0x00, /* 0x40 - 0x43 */ +0x00, 0x80, /* 0x44 - 0x45 */ +/* Registers 0x46 - 0x47 are reserved */ + 0x80, 0x80, /* 0x46 - 0x47 */ + +0x80, 0x00, 0x00, /* 0x48 - 0x4a */ +/* Registers 0x4b - 0x7c are reserved */ + 0x00, /* 0x4b */ +0x00, 0x00, 0x00, 0x00, /* 0x4c - 0x4f */ +0x00, 0x00, 0x00, 0x00, /* 0x50 - 0x53 */ +0x00, 0x00, 0x00, 0x00, /* 0x54 - 0x57 */ +0x00, 0x00, 0x00, 0x00, /* 0x58 - 0x5b */ +0x00, 0x00, 0x00, 0x00, /* 0x5c - 0x5f */ +0x00, 0x00, 0x00, 0x00, /* 0x60 - 0x63 */ +0x00, 0x00, 0x00, 0x00, /* 0x64 - 0x67 */ +0x00, 0x00, 0x00, 0x00, /* 0x68 - 0x6b */ +0x00, 0x00, 0x00, 0x00, /* 0x6c - 0x6f */ +0x00, 0x00, 0x00, 0x00, /* 0x70 - 0x73 */ +0x00, 0x00, 0x00, 0x00, /* 0x74 - 0x77 */ +0x00, 0x00, 0x00, 0x00, /* 0x78 - 0x7b */ +0x00, /* 0x7c */ + + 0xda, 0x33, 0x03, /* 0x7d - 0x7f */ +}; + +/* Register read and write */ +static inline unsigned int dac33_read_reg_cache(struct snd_soc_codec *codec, + unsigned reg) +{ + u8 *cache = codec->reg_cache; + if (reg >= DAC33_CACHEREGNUM) + return 0; + + return cache[reg]; +} + +static inline void dac33_write_reg_cache(struct snd_soc_codec *codec, + u8 reg, u8 value) +{ + u8 *cache = codec->reg_cache; + if (reg >= DAC33_CACHEREGNUM) + return; + + cache[reg] = value; +} + +static int dac33_read(struct snd_soc_codec *codec, unsigned int reg, + u8 *value) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + int val, ret = 0; + + *value = reg & 0xff; + + /* If powered off, return the cached value */ + if (dac33->chip_power) { + val = i2c_smbus_read_byte_data(codec->control_data, value[0]); + if (val < 0) { + dev_err(codec->dev, "Read failed (%d)\n", val); + value[0] = dac33_read_reg_cache(codec, reg); + ret = val; + } else { + value[0] = val; + dac33_write_reg_cache(codec, reg, val); + } + } else { + value[0] = dac33_read_reg_cache(codec, reg); + } + + return ret; +} + +static int dac33_write(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + u8 data[2]; + int ret = 0; + + /* + * data is + * D15..D8 dac33 register offset + * D7...D0 register data + */ + data[0] = reg & 0xff; + data[1] = value & 0xff; + + dac33_write_reg_cache(codec, data[0], data[1]); + if (dac33->chip_power) { + ret = codec->hw_write(codec->control_data, data, 2); + if (ret != 2) + dev_err(codec->dev, "Write failed (%d)\n", ret); + else + ret = 0; + } + + return ret; +} + +static int dac33_write_locked(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + int ret; + + mutex_lock(&dac33->mutex); + ret = dac33_write(codec, reg, value); + mutex_unlock(&dac33->mutex); + + return ret; +} + +#define DAC33_I2C_ADDR_AUTOINC 0x80 +static int dac33_write16(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + u8 data[3]; + int ret = 0; + + /* + * data is + * D23..D16 dac33 register offset + * D15..D8 register data MSB + * D7...D0 register data LSB + */ + data[0] = reg & 0xff; + data[1] = (value >> 8) & 0xff; + data[2] = value & 0xff; + + dac33_write_reg_cache(codec, data[0], data[1]); + dac33_write_reg_cache(codec, data[0] + 1, data[2]); + + if (dac33->chip_power) { + /* We need to set autoincrement mode for 16 bit writes */ + data[0] |= DAC33_I2C_ADDR_AUTOINC; + ret = codec->hw_write(codec->control_data, data, 3); + if (ret != 3) + dev_err(codec->dev, "Write failed (%d)\n", ret); + else + ret = 0; + } + + return ret; +} + +static void dac33_init_chip(struct snd_soc_codec *codec) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + + if (unlikely(!dac33->chip_power)) + return; + + /* A : DAC sample rate Fsref/1.5 */ + dac33_write(codec, DAC33_DAC_CTRL_A, DAC33_DACRATE(0)); + /* B : DAC src=normal, not muted */ + dac33_write(codec, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT | + DAC33_DACSRCL_LEFT); + /* C : (defaults) */ + dac33_write(codec, DAC33_DAC_CTRL_C, 0x00); + + /* 73 : volume soft stepping control, + clock source = internal osc (?) */ + dac33_write(codec, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN); + + /* Restore only selected registers (gains mostly) */ + dac33_write(codec, DAC33_LDAC_DIG_VOL_CTRL, + dac33_read_reg_cache(codec, DAC33_LDAC_DIG_VOL_CTRL)); + dac33_write(codec, DAC33_RDAC_DIG_VOL_CTRL, + dac33_read_reg_cache(codec, DAC33_RDAC_DIG_VOL_CTRL)); + + dac33_write(codec, DAC33_LINEL_TO_LLO_VOL, + dac33_read_reg_cache(codec, DAC33_LINEL_TO_LLO_VOL)); + dac33_write(codec, DAC33_LINER_TO_RLO_VOL, + dac33_read_reg_cache(codec, DAC33_LINER_TO_RLO_VOL)); + + dac33_write(codec, DAC33_OUT_AMP_CTRL, + dac33_read_reg_cache(codec, DAC33_OUT_AMP_CTRL)); + + dac33_write(codec, DAC33_LDAC_PWR_CTRL, + dac33_read_reg_cache(codec, DAC33_LDAC_PWR_CTRL)); + dac33_write(codec, DAC33_RDAC_PWR_CTRL, + dac33_read_reg_cache(codec, DAC33_RDAC_PWR_CTRL)); +} + +static inline int dac33_read_id(struct snd_soc_codec *codec) +{ + int i, ret = 0; + u8 reg; + + for (i = 0; i < 3; i++) { + ret = dac33_read(codec, DAC33_DEVICE_ID_MSB + i, ®); + if (ret < 0) + break; + } + + return ret; +} + +static inline void dac33_soft_power(struct snd_soc_codec *codec, int power) +{ + u8 reg; + + reg = dac33_read_reg_cache(codec, DAC33_PWR_CTRL); + if (power) + reg |= DAC33_PDNALLB; + else + reg &= ~(DAC33_PDNALLB | DAC33_OSCPDNB | + DAC33_DACRPDNB | DAC33_DACLPDNB); + dac33_write(codec, DAC33_PWR_CTRL, reg); +} + +static inline void dac33_disable_digital(struct snd_soc_codec *codec) +{ + u8 reg; + + /* Stop the DAI clock */ + reg = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B); + reg &= ~DAC33_BCLKON; + dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, reg); + + /* Power down the Oscillator, and DACs */ + reg = dac33_read_reg_cache(codec, DAC33_PWR_CTRL); + reg &= ~(DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB); + dac33_write(codec, DAC33_PWR_CTRL, reg); +} + +static int dac33_hard_power(struct snd_soc_codec *codec, int power) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + int ret = 0; + + mutex_lock(&dac33->mutex); + + /* Safety check */ + if (unlikely(power == dac33->chip_power)) { + dev_dbg(codec->dev, "Trying to set the same power state: %s\n", + power ? "ON" : "OFF"); + goto exit; + } + + if (power) { + ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies), + dac33->supplies); + if (ret != 0) { + dev_err(codec->dev, + "Failed to enable supplies: %d\n", ret); + goto exit; + } + + if (dac33->power_gpio >= 0) + gpio_set_value(dac33->power_gpio, 1); + + dac33->chip_power = 1; + } else { + dac33_soft_power(codec, 0); + if (dac33->power_gpio >= 0) + gpio_set_value(dac33->power_gpio, 0); + + ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), + dac33->supplies); + if (ret != 0) { + dev_err(codec->dev, + "Failed to disable supplies: %d\n", ret); + goto exit; + } + + dac33->chip_power = 0; + } + +exit: + mutex_unlock(&dac33->mutex); + return ret; +} + +static int dac33_playback_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(w->codec); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + if (likely(dac33->substream)) { + dac33_calculate_times(dac33->substream); + dac33_prepare_chip(dac33->substream); + } + break; + case SND_SOC_DAPM_POST_PMD: + dac33_disable_digital(w->codec); + break; + } + return 0; +} + +static int dac33_get_fifo_mode(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + + ucontrol->value.integer.value[0] = dac33->fifo_mode; + + return 0; +} + +static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + int ret = 0; + + if (dac33->fifo_mode == ucontrol->value.integer.value[0]) + return 0; + /* Do not allow changes while stream is running*/ + if (codec->active) + return -EPERM; + + if (ucontrol->value.integer.value[0] < 0 || + ucontrol->value.integer.value[0] >= DAC33_FIFO_LAST_MODE) + ret = -EINVAL; + else + dac33->fifo_mode = ucontrol->value.integer.value[0]; + + return ret; +} + +/* Codec operation modes */ +static const char *dac33_fifo_mode_texts[] = { + "Bypass", "Mode 1", "Mode 7" +}; + +static const struct soc_enum dac33_fifo_mode_enum = + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(dac33_fifo_mode_texts), + dac33_fifo_mode_texts); + +/* L/R Line Output Gain */ +static const char *lr_lineout_gain_texts[] = { + "Line -12dB DAC 0dB", "Line -6dB DAC 6dB", + "Line 0dB DAC 12dB", "Line 6dB DAC 18dB", +}; + +static const struct soc_enum l_lineout_gain_enum = + SOC_ENUM_SINGLE(DAC33_LDAC_PWR_CTRL, 0, + ARRAY_SIZE(lr_lineout_gain_texts), + lr_lineout_gain_texts); + +static const struct soc_enum r_lineout_gain_enum = + SOC_ENUM_SINGLE(DAC33_RDAC_PWR_CTRL, 0, + ARRAY_SIZE(lr_lineout_gain_texts), + lr_lineout_gain_texts); + +/* + * DACL/R digital volume control: + * from 0 dB to -63.5 in 0.5 dB steps + * Need to be inverted later on: + * 0x00 == 0 dB + * 0x7f == -63.5 dB + */ +static DECLARE_TLV_DB_SCALE(dac_digivol_tlv, -6350, 50, 0); + +static const struct snd_kcontrol_new dac33_snd_controls[] = { + SOC_DOUBLE_R_TLV("DAC Digital Playback Volume", + DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, + 0, 0x7f, 1, dac_digivol_tlv), + SOC_DOUBLE_R("DAC Digital Playback Switch", + DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, 7, 1, 1), + SOC_DOUBLE_R("Line to Line Out Volume", + DAC33_LINEL_TO_LLO_VOL, DAC33_LINER_TO_RLO_VOL, 0, 127, 1), + SOC_ENUM("Left Line Output Gain", l_lineout_gain_enum), + SOC_ENUM("Right Line Output Gain", r_lineout_gain_enum), +}; + +static const struct snd_kcontrol_new dac33_mode_snd_controls[] = { + SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum, + dac33_get_fifo_mode, dac33_set_fifo_mode), +}; + +/* Analog bypass */ +static const struct snd_kcontrol_new dac33_dapm_abypassl_control = + SOC_DAPM_SINGLE("Switch", DAC33_LINEL_TO_LLO_VOL, 7, 1, 1); + +static const struct snd_kcontrol_new dac33_dapm_abypassr_control = + SOC_DAPM_SINGLE("Switch", DAC33_LINER_TO_RLO_VOL, 7, 1, 1); + +/* LOP L/R invert selection */ +static const char *dac33_lr_lom_texts[] = {"DAC", "LOP"}; + +static const struct soc_enum dac33_left_lom_enum = + SOC_ENUM_SINGLE(DAC33_OUT_AMP_CTRL, 3, + ARRAY_SIZE(dac33_lr_lom_texts), + dac33_lr_lom_texts); + +static const struct snd_kcontrol_new dac33_dapm_left_lom_control = +SOC_DAPM_ENUM("Route", dac33_left_lom_enum); + +static const struct soc_enum dac33_right_lom_enum = + SOC_ENUM_SINGLE(DAC33_OUT_AMP_CTRL, 2, + ARRAY_SIZE(dac33_lr_lom_texts), + dac33_lr_lom_texts); + +static const struct snd_kcontrol_new dac33_dapm_right_lom_control = +SOC_DAPM_ENUM("Route", dac33_right_lom_enum); + +static const struct snd_soc_dapm_widget dac33_dapm_widgets[] = { + SND_SOC_DAPM_OUTPUT("LEFT_LO"), + SND_SOC_DAPM_OUTPUT("RIGHT_LO"), + + SND_SOC_DAPM_INPUT("LINEL"), + SND_SOC_DAPM_INPUT("LINER"), + + SND_SOC_DAPM_DAC("DACL", "Left Playback", SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC("DACR", "Right Playback", SND_SOC_NOPM, 0, 0), + + /* Analog bypass */ + SND_SOC_DAPM_SWITCH("Analog Left Bypass", SND_SOC_NOPM, 0, 0, + &dac33_dapm_abypassl_control), + SND_SOC_DAPM_SWITCH("Analog Right Bypass", SND_SOC_NOPM, 0, 0, + &dac33_dapm_abypassr_control), + + SND_SOC_DAPM_MUX("Left LOM Inverted From", SND_SOC_NOPM, 0, 0, + &dac33_dapm_left_lom_control), + SND_SOC_DAPM_MUX("Right LOM Inverted From", SND_SOC_NOPM, 0, 0, + &dac33_dapm_right_lom_control), + /* + * For DAPM path, when only the anlog bypass path is enabled, and the + * LOP inverted from the corresponding DAC side. + * This is needed, so we can attach the DAC power supply in this case. + */ + SND_SOC_DAPM_PGA("Left Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0), + SND_SOC_DAPM_PGA("Right Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0), + + SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Left Amplifier", + DAC33_OUT_AMP_PWR_CTRL, 6, 3, 3, 0), + SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Right Amplifier", + DAC33_OUT_AMP_PWR_CTRL, 4, 3, 3, 0), + + SND_SOC_DAPM_SUPPLY("Left DAC Power", + DAC33_LDAC_PWR_CTRL, 2, 0, NULL, 0), + SND_SOC_DAPM_SUPPLY("Right DAC Power", + DAC33_RDAC_PWR_CTRL, 2, 0, NULL, 0), + + SND_SOC_DAPM_SUPPLY("Codec Power", + DAC33_PWR_CTRL, 4, 0, NULL, 0), + + SND_SOC_DAPM_PRE("Pre Playback", dac33_playback_event), + SND_SOC_DAPM_POST("Post Playback", dac33_playback_event), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + /* Analog bypass */ + {"Analog Left Bypass", "Switch", "LINEL"}, + {"Analog Right Bypass", "Switch", "LINER"}, + + {"Output Left Amplifier", NULL, "DACL"}, + {"Output Right Amplifier", NULL, "DACR"}, + + {"Left Bypass PGA", NULL, "Analog Left Bypass"}, + {"Right Bypass PGA", NULL, "Analog Right Bypass"}, + + {"Left LOM Inverted From", "DAC", "Left Bypass PGA"}, + {"Right LOM Inverted From", "DAC", "Right Bypass PGA"}, + {"Left LOM Inverted From", "LOP", "Analog Left Bypass"}, + {"Right LOM Inverted From", "LOP", "Analog Right Bypass"}, + + {"Output Left Amplifier", NULL, "Left LOM Inverted From"}, + {"Output Right Amplifier", NULL, "Right LOM Inverted From"}, + + {"DACL", NULL, "Left DAC Power"}, + {"DACR", NULL, "Right DAC Power"}, + + {"Left Bypass PGA", NULL, "Left DAC Power"}, + {"Right Bypass PGA", NULL, "Right DAC Power"}, + + /* output */ + {"LEFT_LO", NULL, "Output Left Amplifier"}, + {"RIGHT_LO", NULL, "Output Right Amplifier"}, + + {"LEFT_LO", NULL, "Codec Power"}, + {"RIGHT_LO", NULL, "Codec Power"}, +}; + +static int dac33_add_widgets(struct snd_soc_codec *codec) +{ + struct snd_soc_dapm_context *dapm = &codec->dapm; + + snd_soc_dapm_new_controls(dapm, dac33_dapm_widgets, + ARRAY_SIZE(dac33_dapm_widgets)); + /* set up audio path interconnects */ + snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); + + return 0; +} + +static int dac33_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + int ret; + + switch (level) { + case SND_SOC_BIAS_ON: + break; + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { + /* Coming from OFF, switch on the codec */ + ret = dac33_hard_power(codec, 1); + if (ret != 0) + return ret; + + dac33_init_chip(codec); + } + break; + case SND_SOC_BIAS_OFF: + /* Do not power off, when the codec is already off */ + if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) + return 0; + ret = dac33_hard_power(codec, 0); + if (ret != 0) + return ret; + break; + } + codec->dapm.bias_level = level; + + return 0; +} + +static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33) +{ + struct snd_soc_codec *codec = dac33->codec; + unsigned int delay; + unsigned long flags; + + switch (dac33->fifo_mode) { + case DAC33_FIFO_MODE1: + dac33_write16(codec, DAC33_NSAMPLE_MSB, + DAC33_THRREG(dac33->nsample)); + + /* Take the timestamps */ + spin_lock_irqsave(&dac33->lock, flags); + dac33->t_stamp2 = ktime_to_us(ktime_get()); + dac33->t_stamp1 = dac33->t_stamp2; + spin_unlock_irqrestore(&dac33->lock, flags); + + dac33_write16(codec, DAC33_PREFILL_MSB, + DAC33_THRREG(dac33->alarm_threshold)); + /* Enable Alarm Threshold IRQ with a delay */ + delay = SAMPLES_TO_US(dac33->burst_rate, + dac33->alarm_threshold) + 1000; + usleep_range(delay, delay + 500); + dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT); + break; + case DAC33_FIFO_MODE7: + /* Take the timestamp */ + spin_lock_irqsave(&dac33->lock, flags); + dac33->t_stamp1 = ktime_to_us(ktime_get()); + /* Move back the timestamp with drain time */ + dac33->t_stamp1 -= dac33->mode7_us_to_lthr; + spin_unlock_irqrestore(&dac33->lock, flags); + + dac33_write16(codec, DAC33_PREFILL_MSB, + DAC33_THRREG(DAC33_MODE7_MARGIN)); + + /* Enable Upper Threshold IRQ */ + dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MUT); + break; + default: + dev_warn(codec->dev, "Unhandled FIFO mode: %d\n", + dac33->fifo_mode); + break; + } +} + +static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33) +{ + struct snd_soc_codec *codec = dac33->codec; + unsigned long flags; + + switch (dac33->fifo_mode) { + case DAC33_FIFO_MODE1: + /* Take the timestamp */ + spin_lock_irqsave(&dac33->lock, flags); + dac33->t_stamp2 = ktime_to_us(ktime_get()); + spin_unlock_irqrestore(&dac33->lock, flags); + + dac33_write16(codec, DAC33_NSAMPLE_MSB, + DAC33_THRREG(dac33->nsample)); + break; + case DAC33_FIFO_MODE7: + /* At the moment we are not using interrupts in mode7 */ + break; + default: + dev_warn(codec->dev, "Unhandled FIFO mode: %d\n", + dac33->fifo_mode); + break; + } +} + +static void dac33_work(struct work_struct *work) +{ + struct snd_soc_codec *codec; + struct tlv320dac33_priv *dac33; + u8 reg; + + dac33 = container_of(work, struct tlv320dac33_priv, work); + codec = dac33->codec; + + mutex_lock(&dac33->mutex); + switch (dac33->state) { + case DAC33_PREFILL: + dac33->state = DAC33_PLAYBACK; + dac33_prefill_handler(dac33); + break; + case DAC33_PLAYBACK: + dac33_playback_handler(dac33); + break; + case DAC33_IDLE: + break; + case DAC33_FLUSH: + dac33->state = DAC33_IDLE; + /* Mask all interrupts from dac33 */ + dac33_write(codec, DAC33_FIFO_IRQ_MASK, 0); + + /* flush fifo */ + reg = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A); + reg |= DAC33_FIFOFLUSH; + dac33_write(codec, DAC33_FIFO_CTRL_A, reg); + break; + } + mutex_unlock(&dac33->mutex); +} + +static irqreturn_t dac33_interrupt_handler(int irq, void *dev) +{ + struct snd_soc_codec *codec = dev; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + unsigned long flags; + + spin_lock_irqsave(&dac33->lock, flags); + dac33->t_stamp1 = ktime_to_us(ktime_get()); + spin_unlock_irqrestore(&dac33->lock, flags); + + /* Do not schedule the workqueue in Mode7 */ + if (dac33->fifo_mode != DAC33_FIFO_MODE7) + queue_work(dac33->dac33_wq, &dac33->work); + + return IRQ_HANDLED; +} + +static void dac33_oscwait(struct snd_soc_codec *codec) +{ + int timeout = 60; + u8 reg; + + do { + usleep_range(1000, 2000); + dac33_read(codec, DAC33_INT_OSC_STATUS, ®); + } while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--); + if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) + dev_err(codec->dev, + "internal oscillator calibration failed\n"); +} + +static int dac33_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + + /* Stream started, save the substream pointer */ + dac33->substream = substream; + + snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24); + + return 0; +} + +static void dac33_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + + dac33->substream = NULL; +} + +#define CALC_BURST_RATE(bclkdiv, bclk_per_sample) \ + (BURST_BASEFREQ_HZ / bclkdiv / bclk_per_sample) +static int dac33_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + + /* Check parameters for validity */ + switch (params_rate(params)) { + case 44100: + case 48000: + break; + default: + dev_err(codec->dev, "unsupported rate %d\n", + params_rate(params)); + return -EINVAL; + } + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + dac33->fifo_size = DAC33_FIFO_SIZE_16BIT; + dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 32); + break; + case SNDRV_PCM_FORMAT_S32_LE: + dac33->fifo_size = DAC33_FIFO_SIZE_24BIT; + dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 64); + break; + default: + dev_err(codec->dev, "unsupported format %d\n", + params_format(params)); + return -EINVAL; + } + + return 0; +} + +#define CALC_OSCSET(rate, refclk) ( \ + ((((rate * 10000) / refclk) * 4096) + 7000) / 10000) +#define CALC_RATIOSET(rate, refclk) ( \ + ((((refclk * 100000) / rate) * 16384) + 50000) / 100000) + +/* + * tlv320dac33 is strict on the sequence of the register writes, if the register + * writes happens in different order, than dac33 might end up in unknown state. + * Use the known, working sequence of register writes to initialize the dac33. + */ +static int dac33_prepare_chip(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + unsigned int oscset, ratioset, pwr_ctrl, reg_tmp; + u8 aictrl_a, aictrl_b, fifoctrl_a; + + switch (substream->runtime->rate) { + case 44100: + case 48000: + oscset = CALC_OSCSET(substream->runtime->rate, dac33->refclk); + ratioset = CALC_RATIOSET(substream->runtime->rate, + dac33->refclk); + break; + default: + dev_err(codec->dev, "unsupported rate %d\n", + substream->runtime->rate); + return -EINVAL; + } + + + aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A); + aictrl_a &= ~(DAC33_NCYCL_MASK | DAC33_WLEN_MASK); + /* Read FIFO control A, and clear FIFO flush bit */ + fifoctrl_a = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A); + fifoctrl_a &= ~DAC33_FIFOFLUSH; + + fifoctrl_a &= ~DAC33_WIDTH; + switch (substream->runtime->format) { + case SNDRV_PCM_FORMAT_S16_LE: + aictrl_a |= (DAC33_NCYCL_16 | DAC33_WLEN_16); + fifoctrl_a |= DAC33_WIDTH; + break; + case SNDRV_PCM_FORMAT_S32_LE: + aictrl_a |= (DAC33_NCYCL_32 | DAC33_WLEN_24); + break; + default: + dev_err(codec->dev, "unsupported format %d\n", + substream->runtime->format); + return -EINVAL; + } + + mutex_lock(&dac33->mutex); + + if (!dac33->chip_power) { + /* + * Chip is not powered yet. + * Do the init in the dac33_set_bias_level later. + */ + mutex_unlock(&dac33->mutex); + return 0; + } + + dac33_soft_power(codec, 0); + dac33_soft_power(codec, 1); + + reg_tmp = dac33_read_reg_cache(codec, DAC33_INT_OSC_CTRL); + dac33_write(codec, DAC33_INT_OSC_CTRL, reg_tmp); + + /* Write registers 0x08 and 0x09 (MSB, LSB) */ + dac33_write16(codec, DAC33_INT_OSC_FREQ_RAT_A, oscset); + + /* OSC calibration time */ + dac33_write(codec, DAC33_CALIB_TIME, 96); + + /* adjustment treshold & step */ + dac33_write(codec, DAC33_INT_OSC_CTRL_B, DAC33_ADJTHRSHLD(2) | + DAC33_ADJSTEP(1)); + + /* div=4 / gain=1 / div */ + dac33_write(codec, DAC33_INT_OSC_CTRL_C, DAC33_REFDIV(4)); + + pwr_ctrl = dac33_read_reg_cache(codec, DAC33_PWR_CTRL); + pwr_ctrl |= DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB; + dac33_write(codec, DAC33_PWR_CTRL, pwr_ctrl); + + dac33_oscwait(codec); + + if (dac33->fifo_mode) { + /* Generic for all FIFO modes */ + /* 50-51 : ASRC Control registers */ + dac33_write(codec, DAC33_ASRC_CTRL_A, DAC33_SRCLKDIV(1)); + dac33_write(codec, DAC33_ASRC_CTRL_B, 1); /* ??? */ + + /* Write registers 0x34 and 0x35 (MSB, LSB) */ + dac33_write16(codec, DAC33_SRC_REF_CLK_RATIO_A, ratioset); + + /* Set interrupts to high active */ + dac33_write(codec, DAC33_INTP_CTRL_A, DAC33_INTPM_AHIGH); + } else { + /* FIFO bypass mode */ + /* 50-51 : ASRC Control registers */ + dac33_write(codec, DAC33_ASRC_CTRL_A, DAC33_SRCBYP); + dac33_write(codec, DAC33_ASRC_CTRL_B, 0); /* ??? */ + } + + /* Interrupt behaviour configuration */ + switch (dac33->fifo_mode) { + case DAC33_FIFO_MODE1: + dac33_write(codec, DAC33_FIFO_IRQ_MODE_B, + DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL)); + break; + case DAC33_FIFO_MODE7: + dac33_write(codec, DAC33_FIFO_IRQ_MODE_A, + DAC33_UTM(DAC33_FIFO_IRQ_MODE_LEVEL)); + break; + default: + /* in FIFO bypass mode, the interrupts are not used */ + break; + } + + aictrl_b = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B); + + switch (dac33->fifo_mode) { + case DAC33_FIFO_MODE1: + /* + * For mode1: + * Disable the FIFO bypass (Enable the use of FIFO) + * Select nSample mode + * BCLK is only running when data is needed by DAC33 + */ + fifoctrl_a &= ~DAC33_FBYPAS; + fifoctrl_a &= ~DAC33_FAUTO; + if (dac33->keep_bclk) + aictrl_b |= DAC33_BCLKON; + else + aictrl_b &= ~DAC33_BCLKON; + break; + case DAC33_FIFO_MODE7: + /* + * For mode1: + * Disable the FIFO bypass (Enable the use of FIFO) + * Select Threshold mode + * BCLK is only running when data is needed by DAC33 + */ + fifoctrl_a &= ~DAC33_FBYPAS; + fifoctrl_a |= DAC33_FAUTO; + if (dac33->keep_bclk) + aictrl_b |= DAC33_BCLKON; + else + aictrl_b &= ~DAC33_BCLKON; + break; + default: + /* + * For FIFO bypass mode: + * Enable the FIFO bypass (Disable the FIFO use) + * Set the BCLK as continuous + */ + fifoctrl_a |= DAC33_FBYPAS; + aictrl_b |= DAC33_BCLKON; + break; + } + + dac33_write(codec, DAC33_FIFO_CTRL_A, fifoctrl_a); + dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a); + dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b); + + /* + * BCLK divide ratio + * 0: 1.5 + * 1: 1 + * 2: 2 + * ... + * 254: 254 + * 255: 255 + */ + if (dac33->fifo_mode) + dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, + dac33->burst_bclkdiv); + else + if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE) + dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 32); + else + dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 16); + + switch (dac33->fifo_mode) { + case DAC33_FIFO_MODE1: + dac33_write16(codec, DAC33_ATHR_MSB, + DAC33_THRREG(dac33->alarm_threshold)); + break; + case DAC33_FIFO_MODE7: + /* + * Configure the threshold levels, and leave 10 sample space + * at the bottom, and also at the top of the FIFO + */ + dac33_write16(codec, DAC33_UTHR_MSB, DAC33_THRREG(dac33->uthr)); + dac33_write16(codec, DAC33_LTHR_MSB, + DAC33_THRREG(DAC33_MODE7_MARGIN)); + break; + default: + break; + } + + mutex_unlock(&dac33->mutex); + + return 0; +} + +static void dac33_calculate_times(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + unsigned int period_size = substream->runtime->period_size; + unsigned int rate = substream->runtime->rate; + unsigned int nsample_limit; + + /* In bypass mode we don't need to calculate */ + if (!dac33->fifo_mode) + return; + + switch (dac33->fifo_mode) { + case DAC33_FIFO_MODE1: + /* Number of samples under i2c latency */ + dac33->alarm_threshold = US_TO_SAMPLES(rate, + dac33->mode1_latency); + nsample_limit = dac33->fifo_size - dac33->alarm_threshold; + + if (period_size <= dac33->alarm_threshold) + /* + * Configure nSamaple to number of periods, + * which covers the latency requironment. + */ + dac33->nsample = period_size * + ((dac33->alarm_threshold / period_size) + + (dac33->alarm_threshold % period_size ? + 1 : 0)); + else if (period_size > nsample_limit) + dac33->nsample = nsample_limit; + else + dac33->nsample = period_size; + + dac33->mode1_us_burst = SAMPLES_TO_US(dac33->burst_rate, + dac33->nsample); + dac33->t_stamp1 = 0; + dac33->t_stamp2 = 0; + break; + case DAC33_FIFO_MODE7: + dac33->uthr = UTHR_FROM_PERIOD_SIZE(period_size, rate, + dac33->burst_rate) + 9; + if (dac33->uthr > (dac33->fifo_size - DAC33_MODE7_MARGIN)) + dac33->uthr = dac33->fifo_size - DAC33_MODE7_MARGIN; + if (dac33->uthr < (DAC33_MODE7_MARGIN + 10)) + dac33->uthr = (DAC33_MODE7_MARGIN + 10); + + dac33->mode7_us_to_lthr = + SAMPLES_TO_US(substream->runtime->rate, + dac33->uthr - DAC33_MODE7_MARGIN + 1); + dac33->t_stamp1 = 0; + break; + default: + break; + } + +} + +static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (dac33->fifo_mode) { + dac33->state = DAC33_PREFILL; + queue_work(dac33->dac33_wq, &dac33->work); + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (dac33->fifo_mode) { + dac33->state = DAC33_FLUSH; + queue_work(dac33->dac33_wq, &dac33->work); + } + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static snd_pcm_sframes_t dac33_dai_delay( + struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + unsigned long long t0, t1, t_now; + unsigned int time_delta, uthr; + int samples_out, samples_in, samples; + snd_pcm_sframes_t delay = 0; + unsigned long flags; + + switch (dac33->fifo_mode) { + case DAC33_FIFO_BYPASS: + break; + case DAC33_FIFO_MODE1: + spin_lock_irqsave(&dac33->lock, flags); + t0 = dac33->t_stamp1; + t1 = dac33->t_stamp2; + spin_unlock_irqrestore(&dac33->lock, flags); + t_now = ktime_to_us(ktime_get()); + + /* We have not started to fill the FIFO yet, delay is 0 */ + if (!t1) + goto out; + + if (t0 > t1) { + /* + * Phase 1: + * After Alarm threshold, and before nSample write + */ + time_delta = t_now - t0; + samples_out = time_delta ? US_TO_SAMPLES( + substream->runtime->rate, + time_delta) : 0; + + if (likely(dac33->alarm_threshold > samples_out)) + delay = dac33->alarm_threshold - samples_out; + else + delay = 0; + } else if ((t_now - t1) <= dac33->mode1_us_burst) { + /* + * Phase 2: + * After nSample write (during burst operation) + */ + time_delta = t_now - t0; + samples_out = time_delta ? US_TO_SAMPLES( + substream->runtime->rate, + time_delta) : 0; + + time_delta = t_now - t1; + samples_in = time_delta ? US_TO_SAMPLES( + dac33->burst_rate, + time_delta) : 0; + + samples = dac33->alarm_threshold; + samples += (samples_in - samples_out); + + if (likely(samples > 0)) + delay = samples; + else + delay = 0; + } else { + /* + * Phase 3: + * After burst operation, before next alarm threshold + */ + time_delta = t_now - t0; + samples_out = time_delta ? US_TO_SAMPLES( + substream->runtime->rate, + time_delta) : 0; + + samples_in = dac33->nsample; + samples = dac33->alarm_threshold; + samples += (samples_in - samples_out); + + if (likely(samples > 0)) + delay = samples > dac33->fifo_size ? + dac33->fifo_size : samples; + else + delay = 0; + } + break; + case DAC33_FIFO_MODE7: + spin_lock_irqsave(&dac33->lock, flags); + t0 = dac33->t_stamp1; + uthr = dac33->uthr; + spin_unlock_irqrestore(&dac33->lock, flags); + t_now = ktime_to_us(ktime_get()); + + /* We have not started to fill the FIFO yet, delay is 0 */ + if (!t0) + goto out; + + if (t_now <= t0) { + /* + * Either the timestamps are messed or equal. Report + * maximum delay + */ + delay = uthr; + goto out; + } + + time_delta = t_now - t0; + if (time_delta <= dac33->mode7_us_to_lthr) { + /* + * Phase 1: + * After burst (draining phase) + */ + samples_out = US_TO_SAMPLES( + substream->runtime->rate, + time_delta); + + if (likely(uthr > samples_out)) + delay = uthr - samples_out; + else + delay = 0; + } else { + /* + * Phase 2: + * During burst operation + */ + time_delta = time_delta - dac33->mode7_us_to_lthr; + + samples_out = US_TO_SAMPLES( + substream->runtime->rate, + time_delta); + samples_in = US_TO_SAMPLES( + dac33->burst_rate, + time_delta); + delay = DAC33_MODE7_MARGIN + samples_in - samples_out; + + if (unlikely(delay > uthr)) + delay = uthr; + } + break; + default: + dev_warn(codec->dev, "Unhandled FIFO mode: %d\n", + dac33->fifo_mode); + break; + } +out: + return delay; +} + +static int dac33_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + u8 ioc_reg, asrcb_reg; + + ioc_reg = dac33_read_reg_cache(codec, DAC33_INT_OSC_CTRL); + asrcb_reg = dac33_read_reg_cache(codec, DAC33_ASRC_CTRL_B); + switch (clk_id) { + case TLV320DAC33_MCLK: + ioc_reg |= DAC33_REFSEL; + asrcb_reg |= DAC33_SRCREFSEL; + break; + case TLV320DAC33_SLEEPCLK: + ioc_reg &= ~DAC33_REFSEL; + asrcb_reg &= ~DAC33_SRCREFSEL; + break; + default: + dev_err(codec->dev, "Invalid clock ID (%d)\n", clk_id); + break; + } + dac33->refclk = freq; + + dac33_write_reg_cache(codec, DAC33_INT_OSC_CTRL, ioc_reg); + dac33_write_reg_cache(codec, DAC33_ASRC_CTRL_B, asrcb_reg); + + return 0; +} + +static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + u8 aictrl_a, aictrl_b; + + aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A); + aictrl_b = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B); + /* set master/slave audio interface */ + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + /* Codec Master */ + aictrl_a |= (DAC33_MSBCLK | DAC33_MSWCLK); + break; + case SND_SOC_DAIFMT_CBS_CFS: + /* Codec Slave */ + if (dac33->fifo_mode) { + dev_err(codec->dev, "FIFO mode requires master mode\n"); + return -EINVAL; + } else + aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK); + break; + default: + return -EINVAL; + } + + aictrl_a &= ~DAC33_AFMT_MASK; + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + aictrl_a |= DAC33_AFMT_I2S; + break; + case SND_SOC_DAIFMT_DSP_A: + aictrl_a |= DAC33_AFMT_DSP; + aictrl_b &= ~DAC33_DATA_DELAY_MASK; + aictrl_b |= DAC33_DATA_DELAY(0); + break; + case SND_SOC_DAIFMT_RIGHT_J: + aictrl_a |= DAC33_AFMT_RIGHT_J; + break; + case SND_SOC_DAIFMT_LEFT_J: + aictrl_a |= DAC33_AFMT_LEFT_J; + break; + default: + dev_err(codec->dev, "Unsupported format (%u)\n", + fmt & SND_SOC_DAIFMT_FORMAT_MASK); + return -EINVAL; + } + + dac33_write_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a); + dac33_write_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b); + + return 0; +} + +static int dac33_soc_probe(struct snd_soc_codec *codec) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + int ret = 0; + + codec->control_data = dac33->control_data; + codec->hw_write = (hw_write_t) i2c_master_send; + codec->dapm.idle_bias_off = 1; + dac33->codec = codec; + + /* Read the tlv320dac33 ID registers */ + ret = dac33_hard_power(codec, 1); + if (ret != 0) { + dev_err(codec->dev, "Failed to power up codec: %d\n", ret); + goto err_power; + } + ret = dac33_read_id(codec); + dac33_hard_power(codec, 0); + + if (ret < 0) { + dev_err(codec->dev, "Failed to read chip ID: %d\n", ret); + ret = -ENODEV; + goto err_power; + } + + /* Check if the IRQ number is valid and request it */ + if (dac33->irq >= 0) { + ret = request_irq(dac33->irq, dac33_interrupt_handler, + IRQF_TRIGGER_RISING | IRQF_DISABLED, + codec->name, codec); + if (ret < 0) { + dev_err(codec->dev, "Could not request IRQ%d (%d)\n", + dac33->irq, ret); + dac33->irq = -1; + } + if (dac33->irq != -1) { + /* Setup work queue */ + dac33->dac33_wq = + create_singlethread_workqueue("tlv320dac33"); + if (dac33->dac33_wq == NULL) { + free_irq(dac33->irq, codec); + return -ENOMEM; + } + + INIT_WORK(&dac33->work, dac33_work); + } + } + + snd_soc_add_controls(codec, dac33_snd_controls, + ARRAY_SIZE(dac33_snd_controls)); + /* Only add the FIFO controls, if we have valid IRQ number */ + if (dac33->irq >= 0) + snd_soc_add_controls(codec, dac33_mode_snd_controls, + ARRAY_SIZE(dac33_mode_snd_controls)); + + dac33_add_widgets(codec); + +err_power: + return ret; +} + +static int dac33_soc_remove(struct snd_soc_codec *codec) +{ + struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec); + + dac33_set_bias_level(codec, SND_SOC_BIAS_OFF); + + if (dac33->irq >= 0) { + free_irq(dac33->irq, dac33->codec); + destroy_workqueue(dac33->dac33_wq); + } + return 0; +} + +static int dac33_soc_suspend(struct snd_soc_codec *codec, pm_message_t state) +{ + dac33_set_bias_level(codec, SND_SOC_BIAS_OFF); + + return 0; +} + +static int dac33_soc_resume(struct snd_soc_codec *codec) +{ + dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_tlv320dac33 = { + .read = dac33_read_reg_cache, + .write = dac33_write_locked, + .set_bias_level = dac33_set_bias_level, + .reg_cache_size = ARRAY_SIZE(dac33_reg), + .reg_word_size = sizeof(u8), + .reg_cache_default = dac33_reg, + .probe = dac33_soc_probe, + .remove = dac33_soc_remove, + .suspend = dac33_soc_suspend, + .resume = dac33_soc_resume, +}; + +#define DAC33_RATES (SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000) +#define DAC33_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_ops dac33_dai_ops = { + .startup = dac33_startup, + .shutdown = dac33_shutdown, + .hw_params = dac33_hw_params, + .trigger = dac33_pcm_trigger, + .delay = dac33_dai_delay, + .set_sysclk = dac33_set_dai_sysclk, + .set_fmt = dac33_set_dai_fmt, +}; + +static struct snd_soc_dai_driver dac33_dai = { + .name = "tlv320dac33-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = DAC33_RATES, + .formats = DAC33_FORMATS,}, + .ops = &dac33_dai_ops, +}; + +static int __devinit dac33_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tlv320dac33_platform_data *pdata; + struct tlv320dac33_priv *dac33; + int ret, i; + + if (client->dev.platform_data == NULL) { + dev_err(&client->dev, "Platform data not set\n"); + return -ENODEV; + } + pdata = client->dev.platform_data; + + dac33 = kzalloc(sizeof(struct tlv320dac33_priv), GFP_KERNEL); + if (dac33 == NULL) + return -ENOMEM; + + dac33->control_data = client; + mutex_init(&dac33->mutex); + spin_lock_init(&dac33->lock); + + i2c_set_clientdata(client, dac33); + + dac33->power_gpio = pdata->power_gpio; + dac33->burst_bclkdiv = pdata->burst_bclkdiv; + dac33->keep_bclk = pdata->keep_bclk; + dac33->mode1_latency = pdata->mode1_latency; + if (!dac33->mode1_latency) + dac33->mode1_latency = 10000; /* 10ms */ + dac33->irq = client->irq; + /* Disable FIFO use by default */ + dac33->fifo_mode = DAC33_FIFO_BYPASS; + + /* Check if the reset GPIO number is valid and request it */ + if (dac33->power_gpio >= 0) { + ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset"); + if (ret < 0) { + dev_err(&client->dev, + "Failed to request reset GPIO (%d)\n", + dac33->power_gpio); + goto err_gpio; + } + gpio_direction_output(dac33->power_gpio, 0); + } + + for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++) + dac33->supplies[i].supply = dac33_supply_names[i]; + + ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(dac33->supplies), + dac33->supplies); + + if (ret != 0) { + dev_err(&client->dev, "Failed to request supplies: %d\n", ret); + goto err_get; + } + + ret = snd_soc_register_codec(&client->dev, + &soc_codec_dev_tlv320dac33, &dac33_dai, 1); + if (ret < 0) + goto err_register; + + return ret; +err_register: + regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies); +err_get: + if (dac33->power_gpio >= 0) + gpio_free(dac33->power_gpio); +err_gpio: + kfree(dac33); + return ret; +} + +static int __devexit dac33_i2c_remove(struct i2c_client *client) +{ + struct tlv320dac33_priv *dac33 = i2c_get_clientdata(client); + + if (unlikely(dac33->chip_power)) + dac33_hard_power(dac33->codec, 0); + + if (dac33->power_gpio >= 0) + gpio_free(dac33->power_gpio); + + regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies); + + snd_soc_unregister_codec(&client->dev); + kfree(dac33); + + return 0; +} + +static const struct i2c_device_id tlv320dac33_i2c_id[] = { + { + .name = "tlv320dac33", + .driver_data = 0, + }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, tlv320dac33_i2c_id); + +static struct i2c_driver tlv320dac33_i2c_driver = { + .driver = { + .name = "tlv320dac33-codec", + .owner = THIS_MODULE, + }, + .probe = dac33_i2c_probe, + .remove = __devexit_p(dac33_i2c_remove), + .id_table = tlv320dac33_i2c_id, +}; + +static int __init dac33_module_init(void) +{ + int r; + r = i2c_add_driver(&tlv320dac33_i2c_driver); + if (r < 0) { + printk(KERN_ERR "DAC33: driver registration failed\n"); + return r; + } + return 0; +} +module_init(dac33_module_init); + +static void __exit dac33_module_exit(void) +{ + i2c_del_driver(&tlv320dac33_i2c_driver); +} +module_exit(dac33_module_exit); + + +MODULE_DESCRIPTION("ASoC TLV320DAC33 codec driver"); +MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); +MODULE_LICENSE("GPL"); |