[PATCH v3 16/27] ALSA: hda/cs8409: Support i2c bulk read/write functions

From: Lucas Tanure tanureal@opensource.cirrus.com

This allows mutex locks to be moved into i2c functions, as the bulk read/write functions can lock/unlock themselves to prevent interruption of sequence reads/writes.

Signed-off-by: Lucas Tanure tanureal@opensource.cirrus.com Signed-off-by: Vitaly Rodionov vitalyr@opensource.cirrus.com ---

Changes in v2: - No changes

Changes in v3: - No changes sound/pci/hda/patch_cs8409-tables.c | 3 +- sound/pci/hda/patch_cs8409.c | 208 +++++++++++++++++----------- sound/pci/hda/patch_cs8409.h | 8 +- 3 files changed, 136 insertions(+), 83 deletions(-)

diff --git a/sound/pci/hda/patch_cs8409-tables.c b/sound/pci/hda/patch_cs8409-tables.c index b03ddef2a25f..0f2fd8bb92bf 100644 --- a/sound/pci/hda/patch_cs8409-tables.c +++ b/sound/pci/hda/patch_cs8409-tables.c @@ -146,7 +146,7 @@ const struct hda_pintbl cs8409_cs42l42_pincfgs[] = { };

/* Vendor specific HW configuration for CS42L42 */ -const struct cs8409_i2c_param cs42l42_init_reg_seq[] = { +const struct cs8409_i2c_param cs42l42_init_reg_seq[CS42L42_INIT_REG_SEQ_SIZE] = { { 0x1010, 0xB0 }, { 0x1D01, 0x00 }, { 0x1D02, 0x06 }, @@ -206,7 +206,6 @@ const struct cs8409_i2c_param cs42l42_init_reg_seq[] = { { 0x1320, 0xff }, { 0x1b79, 0xff }, { 0x1b7a, 0xff }, - {} /* Terminator */ };

/* Vendor specific hw configuration for CS8409 */ diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c index a6aaeabd2279..9569c06bdc48 100644 --- a/sound/pci/hda/patch_cs8409.c +++ b/sound/pci/hda/patch_cs8409.c @@ -81,13 +81,13 @@ static void cs8409_disable_i2c_clock(struct work_struct *work) { struct cs8409_spec *spec = container_of(work, struct cs8409_spec, i2c_clk_work.work);

- mutex_lock(&spec->cs8409_i2c_mux); + mutex_lock(&spec->i2c_mux); if (spec->i2c_clck_enabled) { cs8409_vendor_coef_set(spec->codec, 0x0, cs8409_vendor_coef_get(spec->codec, 0x0) & 0xfffffff7); spec->i2c_clck_enabled = 0; } - mutex_unlock(&spec->cs8409_i2c_mux); + mutex_unlock(&spec->i2c_mux); }

/* @@ -180,12 +180,12 @@ static int cs8409_i2c_set_page(struct hda_codec *codec, unsigned int i2c_reg) * cs8409_i2c_read - CS8409 I2C Read. * @codec: the codec instance * @i2c_address: I2C Address - * @i2c_reg: Register to read + * @addr: Register to read * * CS8409 I2C Read. * Returns negative on error, otherwise returns read value in bits 0-7. */ -static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg) +static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, unsigned int addr) { struct cs8409_spec *spec = codec->spec; unsigned int i2c_reg_data; @@ -194,41 +194,90 @@ static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, un if (spec->cs42l42_suspended) return -EPERM;

+ mutex_lock(&spec->i2c_mux); cs8409_enable_i2c_clock(codec); cs8409_set_i2c_dev_addr(codec, i2c_address);

- if (cs8409_i2c_set_page(codec, i2c_reg)) { + if (cs8409_i2c_set_page(codec, addr)) { codec_err(codec, "%s() Paged Transaction Failed 0x%02x : 0x%04x\n", - __func__, i2c_address, i2c_reg); + __func__, i2c_address, addr); return -EIO; }

- i2c_reg_data = (i2c_reg << 8) & 0x0ffff; + i2c_reg_data = (addr << 8) & 0x0ffff; cs8409_vendor_coef_set(codec, CS8409_I2C_QREAD, i2c_reg_data); - if (cs8409_i2c_wait_complete(codec) < 0) { - codec_err(codec, "%s() Transaction Failed 0x%02x : 0x%04x\n", - __func__, i2c_address, i2c_reg); - return -EIO; - } + if (cs8409_i2c_wait_complete(codec) < 0) + goto error;

/* Register in bits 15-8 and the data in 7-0 */ read_data = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD);

+ mutex_unlock(&spec->i2c_mux); return read_data & 0x0ff; + +error: + mutex_unlock(&spec->i2c_mux); + codec_err(codec, "%s() Failed 0x%02x : 0x%04x\n", __func__, i2c_address, addr); + return -EIO; +} + +/** + * cs8409_i2c_bulk_read - CS8409 I2C Read Sequence. + * @codec: the codec instance + * @seq: Register Sequence to read + * @count: Number of registeres to read + * + * Returns negative on error, values are read into value element of cs8409_i2c_param sequence. + */ +static int cs8409_i2c_bulk_read(struct hda_codec *codec, unsigned int i2c_address, + struct cs8409_i2c_param *seq, int count) +{ + struct cs8409_spec *spec = codec->spec; + unsigned int i2c_reg_data; + int i; + + if (spec->cs42l42_suspended) + return -EPERM; + + mutex_lock(&spec->i2c_mux); + cs8409_set_i2c_dev_addr(codec, i2c_address); + + for (i = 0; i < count; i++) { + cs8409_enable_i2c_clock(codec); + if (cs8409_i2c_set_page(codec, seq[i].addr)) + goto error; + + i2c_reg_data = (seq[i].addr << 8) & 0x0ffff; + cs8409_vendor_coef_set(codec, CS8409_I2C_QREAD, i2c_reg_data); + + if (cs8409_i2c_wait_complete(codec) < 0) + goto error; + + seq[i].value = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD) & 0xff; + } + + mutex_unlock(&spec->i2c_mux); + + return 0; + +error: + mutex_unlock(&spec->i2c_mux); + codec_err(codec, "I2C Bulk Write Failed 0x%02x\n", i2c_address); + return -EIO; }

/** * cs8409_i2c_write - CS8409 I2C Write. * @codec: the codec instance * @i2c_address: I2C Address - * @i2c_reg: Register to write to - * @i2c_data: Data to write + * @addr: Register to write to + * @value: Data to write * * CS8409 I2C Write. * Returns negative on error, otherwise returns 0. */ -static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg, - unsigned int i2c_data) +static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, unsigned int addr, + unsigned int value) { struct cs8409_spec *spec = codec->spec; unsigned int i2c_reg_data; @@ -236,25 +285,73 @@ static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, u if (spec->cs42l42_suspended) return -EPERM;

+ mutex_lock(&spec->i2c_mux); + cs8409_enable_i2c_clock(codec); cs8409_set_i2c_dev_addr(codec, i2c_address);

- if (cs8409_i2c_set_page(codec, i2c_reg)) { + if (cs8409_i2c_set_page(codec, addr)) { codec_err(codec, "%s() Paged Transaction Failed 0x%02x : 0x%04x\n", - __func__, i2c_address, i2c_reg); + __func__, i2c_address, addr); return -EIO; }

- i2c_reg_data = ((i2c_reg << 8) & 0x0ff00) | (i2c_data & 0x0ff); + i2c_reg_data = ((addr << 8) & 0x0ff00) | (value & 0x0ff); cs8409_vendor_coef_set(codec, CS8409_I2C_QWRITE, i2c_reg_data);

- if (cs8409_i2c_wait_complete(codec) < 0) { - codec_err(codec, "%s() Transaction Failed 0x%02x : 0x%04x\n", - __func__, i2c_address, i2c_reg); - return -EIO; + if (cs8409_i2c_wait_complete(codec) < 0) + goto error; + + mutex_unlock(&spec->i2c_mux); + return 0; + +error: + mutex_unlock(&spec->i2c_mux); + codec_err(codec, "%s() Failed 0x%02x : 0x%04x\n", __func__, i2c_address, addr); + return -EIO; +} + +/** + * cs8409_i2c_bulk_write - CS8409 I2C Write Sequence. + * @codec: the codec instance + * @seq: Register Sequence to write + * @count: Number of registeres to write + * + * Returns negative on error. + */ +static int cs8409_i2c_bulk_write(struct hda_codec *codec, unsigned int i2c_address, + const struct cs8409_i2c_param *seq, int count) +{ + struct cs8409_spec *spec = codec->spec; + unsigned int i2c_reg_data; + int i; + + if (spec->cs42l42_suspended) + return -EPERM; + + mutex_lock(&spec->i2c_mux); + cs8409_set_i2c_dev_addr(codec, i2c_address); + + for (i = 0; i < count; i++) { + cs8409_enable_i2c_clock(codec); + if (cs8409_i2c_set_page(codec, seq[i].addr)) + goto error; + + i2c_reg_data = ((seq[i].addr << 8) & 0x0ff00) | (seq[i].value & 0x0ff); + cs8409_vendor_coef_set(codec, CS8409_I2C_QWRITE, i2c_reg_data); + + if (cs8409_i2c_wait_complete(codec) < 0) + goto error; }

+ mutex_unlock(&spec->i2c_mux); + return 0; + +error: + mutex_unlock(&spec->i2c_mux); + codec_err(codec, "I2C Bulk Write Failed 0x%02x\n", i2c_address); + return -EIO; }

int cs8409_cs42l42_volume_info(struct snd_kcontrol *kctrl, struct snd_ctl_elem_info *uinfo) @@ -318,7 +415,6 @@ int cs8409_cs42l42_volume_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_va

switch (ofs) { case CS42L42_VOL_DAC: - mutex_lock(&spec->cs8409_i2c_mux); if (chs & BIT(0)) { spec->vol[ofs] = *valp; cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHA, @@ -331,16 +427,13 @@ int cs8409_cs42l42_volume_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_va cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHB, -(spec->vol[ofs]) & CS8409_CS42L42_REG_HS_VOL_MASK); } - mutex_unlock(&spec->cs8409_i2c_mux); break; case CS42L42_VOL_ADC: - mutex_lock(&spec->cs8409_i2c_mux); if (chs & BIT(0)) { spec->vol[ofs] = *valp; cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_AMIC_VOL, spec->vol[ofs] & CS8409_CS42L42_REG_AMIC_VOL_MASK); } - mutex_unlock(&spec->cs8409_i2c_mux); break; default: break; @@ -353,6 +446,12 @@ int cs8409_cs42l42_volume_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_va static void cs8409_cs42l42_reset(struct hda_codec *codec) { struct cs8409_spec *spec = codec->spec; + struct cs8409_i2c_param irq_regs[] = { + { 0x1308, 0x00 }, + { 0x1309, 0x00 }, + { 0x130A, 0x00 }, + { 0x130F, 0x00 }, + };

/* Assert RTS# line */ snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, 0); @@ -366,25 +465,13 @@ static void cs8409_cs42l42_reset(struct hda_codec *codec) spec->cs42l42_suspended = 0; spec->last_page = 0;

- mutex_lock(&spec->cs8409_i2c_mux); - /* Clear interrupts, by reading interrupt status registers */ - cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308); - cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1309); - cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130A); - cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130F); - - mutex_unlock(&spec->cs8409_i2c_mux); - + cs8409_i2c_bulk_read(codec, CS42L42_I2C_ADDR, irq_regs, ARRAY_SIZE(irq_regs)); }

/* Configure CS42L42 slave codec for jack autodetect */ static void cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec) { - struct cs8409_spec *spec = codec->spec; - - mutex_lock(&spec->cs8409_i2c_mux); - /* Set TIP_SENSE_EN for analog front-end of tip sense. * Additionally set HSBIAS_SENSE_EN for some variants. */ @@ -403,17 +490,11 @@ static void cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec) cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f); /* Enable interrupt */ cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xF3); - - mutex_unlock(&spec->cs8409_i2c_mux); }

/* Enable and run CS42L42 slave codec jack auto detect */ static void cs8409_cs42l42_run_jack_detect(struct hda_codec *codec) { - struct cs8409_spec *spec = codec->spec; - - mutex_lock(&spec->cs8409_i2c_mux); - /* Clear interrupts */ cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308); cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1b77); @@ -432,22 +513,6 @@ static void cs8409_cs42l42_run_jack_detect(struct hda_codec *codec) /* Wait ~10ms */ usleep_range(10000, 25000);

- mutex_unlock(&spec->cs8409_i2c_mux); - -} - -static void cs8409_cs42l42_reg_setup(struct hda_codec *codec) -{ - const struct cs8409_i2c_param *seq = cs42l42_init_reg_seq; - struct cs8409_spec *spec = codec->spec; - - mutex_lock(&spec->cs8409_i2c_mux); - - for (; seq->addr; seq++) - cs8409_i2c_write(codec, CS42L42_I2C_ADDR, seq->addr, seq->reg); - - mutex_unlock(&spec->cs8409_i2c_mux); - }

/* @@ -475,15 +540,11 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res) if (res & CS8409_CS42L42_INT) return;

- mutex_lock(&spec->cs8409_i2c_mux); - /* Read jack detect status registers */ reg_cdc_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308); reg_hs_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1124); reg_ts_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f);

- mutex_unlock(&spec->cs8409_i2c_mux); - /* If status values are < 0, read error has occurred. */ if (reg_cdc_status < 0 || reg_hs_status < 0 || reg_ts_status < 0) return; @@ -491,10 +552,8 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res) /* HSDET_AUTO_DONE */ if (reg_cdc_status & CS42L42_HSDET_AUTO_DONE) {

- mutex_lock(&spec->cs8409_i2c_mux); /* Disable HSDET_AUTO_DONE */ cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x131b, 0xFF); - mutex_unlock(&spec->cs8409_i2c_mux);

type = ((reg_hs_status & CS42L42_HSTYPE_MASK) + 1); /* CS42L42 reports optical jack as type 4 @@ -518,10 +577,8 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res) } }

- mutex_lock(&spec->cs8409_i2c_mux); /* Re-Enable Tip Sense Interrupt */ cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xF3); - mutex_unlock(&spec->cs8409_i2c_mux);

} else { /* TIP_SENSE INSERT/REMOVE */ @@ -585,10 +642,8 @@ static int cs8409_suspend(struct hda_codec *codec)

cs8409_enable_ur(codec, 0);

- mutex_lock(&spec->cs8409_i2c_mux); /* Power down CS42L42 ASP/EQ/MIX/HP */ cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1101, 0xfe); - mutex_unlock(&spec->cs8409_i2c_mux);

spec->cs42l42_suspended = 1;

@@ -638,26 +693,23 @@ static void cs8409_cs42l42_hw_init(struct hda_codec *codec) cs8409_cs42l42_reset(codec);

/* Initialise CS42L42 companion codec */ - cs8409_cs42l42_reg_setup(codec); + cs8409_i2c_bulk_write(codec, CS42L42_I2C_ADDR, cs42l42_init_reg_seq, + CS42L42_INIT_REG_SEQ_SIZE);

if (codec->fixup_id == CS8409_WARLOCK || codec->fixup_id == CS8409_CYBORG) { /* FULL_SCALE_VOL = 0 for Warlock / Cyborg */ - mutex_lock(&spec->cs8409_i2c_mux); cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x2001, 0x01); - mutex_unlock(&spec->cs8409_i2c_mux); /* DMIC1_MO=00b, DMIC1/2_SR=1 */ cs8409_vendor_coef_set(codec, 0x09, 0x0003); }

/* Restore Volumes after Resume */ - mutex_lock(&spec->cs8409_i2c_mux); cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHA, -(spec->vol[1]) & CS8409_CS42L42_REG_HS_VOL_MASK); cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHB, -(spec->vol[2]) & CS8409_CS42L42_REG_HS_VOL_MASK); cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_AMIC_VOL, spec->vol[0] & CS8409_CS42L42_REG_AMIC_VOL_MASK); - mutex_unlock(&spec->cs8409_i2c_mux);

cs8409_cs42l42_enable_jack_detect(codec);

@@ -746,7 +798,7 @@ void cs8409_cs42l42_fixups(struct hda_codec *codec, const struct hda_fixup *fix, spec->exec_verb = codec->core.exec_verb; codec->core.exec_verb = cs8409_cs42l42_exec_verb;

- mutex_init(&spec->cs8409_i2c_mux); + mutex_init(&spec->i2c_mux);

codec->patch_ops = cs8409_cs42l42_patch_ops;

diff --git a/sound/pci/hda/patch_cs8409.h b/sound/pci/hda/patch_cs8409.h index ee66fd0c01dc..d84cda94dfb9 100644 --- a/sound/pci/hda/patch_cs8409.h +++ b/sound/pci/hda/patch_cs8409.h @@ -243,6 +243,8 @@ enum cs8409_coefficient_index_registers { #define CS8409_CS42L42_DMIC_PIN_NID CS8409_PIN_DMIC1_IN #define CS8409_CS42L42_DMIC_ADC_PIN_NID CS8409_PIN_DMIC1

+#define CS42L42_INIT_REG_SEQ_SIZE 59 + enum { CS8409_BULLSEYE, CS8409_WARLOCK, @@ -257,7 +259,7 @@ enum {

struct cs8409_i2c_param { unsigned int addr; - unsigned int reg; + unsigned int value; };

struct cs8409_cir_param { @@ -279,7 +281,7 @@ struct cs8409_spec { unsigned int cs42l42_suspended:1; s8 vol[CS42L42_VOLUMES];

- struct mutex cs8409_i2c_mux; + struct mutex i2c_mux; unsigned int i2c_clck_enabled; unsigned int dev_addr; struct delayed_work i2c_clk_work; @@ -303,7 +305,7 @@ extern const struct hda_model_fixup cs8409_models[]; extern const struct hda_fixup cs8409_fixups[]; extern const struct hda_verb cs8409_cs42l42_init_verbs[]; extern const struct hda_pintbl cs8409_cs42l42_pincfgs[]; -extern const struct cs8409_i2c_param cs42l42_init_reg_seq[]; +extern const struct cs8409_i2c_param cs42l42_init_reg_seq[CS42L42_INIT_REG_SEQ_SIZE]; extern const struct cs8409_cir_param cs8409_cs42l42_hw_cfg[]; extern const struct cs8409_cir_param cs8409_cs42l42_bullseye_atn[];