From: Stefan Binding sbinding@opensource.cirrus.com
Also removing 2 redundant cs8409_i2c_read() calls, as we already did read them in a code above.
Tested on DELL Inspiron-3505, DELL Inspiron-3501, DELL Inspiron-3500
Signed-off-by: Stefan Binding sbinding@opensource.cirrus.com Signed-off-by: Vitaly Rodionov vitalyr@opensource.cirrus.com
Changes in v1: - No changes
Changes in v2: - Chanaged commit message to describe removal of 2 cs8409_i2c_read()s. - Added comments for i2c_read/write functions - Removed redundant parentheses
Changes in v3: - Fixed warnings Reported-by: kernel test robot lkp@intel.com
--- sound/pci/hda/patch_cirrus.c | 136 +++++++++++++++++++++++------------ 1 file changed, 91 insertions(+), 45 deletions(-)
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c index 6a9e5c803977..d95478ea2fb2 100644 --- a/sound/pci/hda/patch_cirrus.c +++ b/sound/pci/hda/patch_cirrus.c @@ -1493,22 +1493,34 @@ static const struct cs8409_cir_param cs8409_cs42l42_hw_cfg[] = { {} /* Terminator */ };
-/* Enable I2C clocks */ -static void cs8409_enable_i2c_clock(struct hda_codec *codec, unsigned int flag) +/** + * cs8409_enable_i2c_clock - Enable I2C clocks + * @codec: the codec instance + * @enable: Enable or disable I2C clocks + * + * Enable or Disable I2C clocks. + */ +static void cs8409_enable_i2c_clock(struct hda_codec *codec, unsigned int enable) { unsigned int retval = 0; unsigned int newval = 0;
retval = cs_vendor_coef_get(codec, 0x0); - newval = (flag) ? (retval | 0x8) : (retval & 0xfffffff7); + newval = (enable) ? (retval | 0x8) : (retval & 0xfffffff7); cs_vendor_coef_set(codec, 0x0, newval); }
-/* Wait I2C transaction */ +/** + * cs8409_i2c_wait_complete - Wait for I2C transaction + * @codec: the codec instance + * + * Wait for I2C transaction to complete. + * Return -1 if transaction wait times out. + */ static int cs8409_i2c_wait_complete(struct hda_codec *codec) { int repeat = 5; - unsigned int retval = 0; + unsigned int retval;
do { retval = cs_vendor_coef_get(codec, CIR_I2C_STATUS); @@ -1516,82 +1528,103 @@ static int cs8409_i2c_wait_complete(struct hda_codec *codec) usleep_range(2000, 4000); --repeat; } else - break; + return 0;
} while (repeat);
- return repeat > 0 ? 0 : -1; + return -1; }
-/* CS8409 slave i2cRead */ -static unsigned int cs8409_i2c_read(struct hda_codec *codec, +/** + * cs8409_i2c_read - CS8409 I2C Read. + * @codec: the codec instance + * @i2c_address: I2C Address + * @i2c_reg: Register to read + * @paged: Is a paged transaction + * + * 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, unsigned int paged) { unsigned int i2c_reg_data; - unsigned int retval = 0; + unsigned int read_data;
cs8409_enable_i2c_clock(codec, 1); cs_vendor_coef_set(codec, CIR_I2C_ADDR, i2c_address);
if (paged) { cs_vendor_coef_set(codec, CIR_I2C_QWRITE, i2c_reg >> 8); - if (cs8409_i2c_wait_complete(codec) == -1) { + if (cs8409_i2c_wait_complete(codec) < 0) { codec_err(codec, - "%s() Paged Transaction Failed 0x%02x : 0x%04x = 0x%02x\n", - __func__, i2c_address, i2c_reg, retval); + "%s() Paged Transaction Failed 0x%02x : 0x%04x\n", + __func__, i2c_address, i2c_reg); + return -EIO; } }
i2c_reg_data = (i2c_reg << 8) & 0x0ffff; cs_vendor_coef_set(codec, CIR_I2C_QREAD, i2c_reg_data); - if (cs8409_i2c_wait_complete(codec) == -1) { - codec_err(codec, "%s() Transaction Failed 0x%02x : 0x%04x = 0x%02x\n", - __func__, i2c_address, i2c_reg, retval); + 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; }
/* Register in bits 15-8 and the data in 7-0 */ - retval = cs_vendor_coef_get(codec, CIR_I2C_QREAD); - retval &= 0x0ff; + read_data = cs_vendor_coef_get(codec, CIR_I2C_QREAD);
cs8409_enable_i2c_clock(codec, 0);
- return retval; + return read_data & 0x0ff; }
-/* CS8409 slave i2cWrite */ -static unsigned int cs8409_i2c_write(struct hda_codec *codec, +/** + * 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 + * @paged: Is a paged transaction + * + * 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, unsigned int paged) { - unsigned int retval = 0; - unsigned int i2c_reg_data = 0; + unsigned int i2c_reg_data;
cs8409_enable_i2c_clock(codec, 1); cs_vendor_coef_set(codec, CIR_I2C_ADDR, i2c_address);
if (paged) { cs_vendor_coef_set(codec, CIR_I2C_QWRITE, i2c_reg >> 8); - if (cs8409_i2c_wait_complete(codec) == -1) { + if (cs8409_i2c_wait_complete(codec) < 0) { codec_err(codec, - "%s() Paged Transaction Failed 0x%02x : 0x%04x = 0x%02x\n", - __func__, i2c_address, i2c_reg, retval); + "%s() Paged Transaction Failed 0x%02x : 0x%04x\n", + __func__, i2c_address, i2c_reg); + return -EIO; } }
i2c_reg_data = ((i2c_reg << 8) & 0x0ff00) | (i2c_data & 0x0ff); cs_vendor_coef_set(codec, CIR_I2C_QWRITE, i2c_reg_data);
- if (cs8409_i2c_wait_complete(codec) == -1) { - codec_err(codec, "%s() Transaction Failed 0x%02x : 0x%04x = 0x%02x\n", - __func__, i2c_address, i2c_reg, retval); + 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; }
cs8409_enable_i2c_clock(codec, 0);
- return retval; + return 0; }
static int cs8409_cs42l42_volume_info(struct snd_kcontrol *kcontrol, @@ -1624,14 +1657,27 @@ static int cs8409_cs42l42_volume_info(struct snd_kcontrol *kcontrol, static void cs8409_cs42l42_update_volume(struct hda_codec *codec) { struct cs_spec *spec = codec->spec; + int data;
mutex_lock(&spec->cs8409_i2c_mux); - spec->cs42l42_hp_volume[0] = -(cs8409_i2c_read(codec, CS42L42_I2C_ADDR, - CS8409_CS42L42_REG_HS_VOLUME_CHA, 1)); - spec->cs42l42_hp_volume[1] = -(cs8409_i2c_read(codec, CS42L42_I2C_ADDR, - CS8409_CS42L42_REG_HS_VOLUME_CHB, 1)); - spec->cs42l42_hs_mic_volume[0] = -(cs8409_i2c_read(codec, CS42L42_I2C_ADDR, - CS8409_CS42L42_REG_AMIC_VOLUME, 1)); + data = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, + CS8409_CS42L42_REG_HS_VOLUME_CHA, 1); + if (data >= 0) + spec->cs42l42_hp_volume[0] = -data; + else + spec->cs42l42_hp_volume[0] = CS8409_CS42L42_HP_VOL_REAL_MIN; + data = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, + CS8409_CS42L42_REG_HS_VOLUME_CHB, 1); + if (data >= 0) + spec->cs42l42_hp_volume[1] = -data; + else + spec->cs42l42_hp_volume[1] = CS8409_CS42L42_HP_VOL_REAL_MIN; + data = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, + CS8409_CS42L42_REG_AMIC_VOLUME, 1); + if (data >= 0) + spec->cs42l42_hs_mic_volume[0] = -data; + else + spec->cs42l42_hs_mic_volume[0] = CS8409_CS42L42_AMIC_VOL_REAL_MIN; mutex_unlock(&spec->cs8409_i2c_mux); spec->cs42l42_volume_init = 1; } @@ -1782,7 +1828,7 @@ static void cs8409_cs42l42_reset(struct hda_codec *codec) }
/* Configure CS42L42 slave codec for jack autodetect */ -static int cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec) +static void cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec) { struct cs_spec *spec = codec->spec;
@@ -1804,8 +1850,6 @@ static int cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec) cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1b79, 0x00, 1);
mutex_unlock(&spec->cs8409_i2c_mux); - - return 0; }
/* Enable and run CS42L42 slave codec jack auto detect */ @@ -1860,9 +1904,9 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res) { struct cs_spec *spec = codec->spec; int status_changed = 0; - unsigned int reg_cdc_status = 0; - unsigned int reg_hs_status = 0; - unsigned int reg_ts_status = 0; + int reg_cdc_status; + int reg_hs_status; + int reg_ts_status; int type = 0; struct hda_jack_tbl *jk;
@@ -1881,13 +1925,15 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res) reg_hs_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1124, 1); reg_ts_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f, 1);
- /* Clear interrupts */ + /* Clear interrupts, by reading interrupt status registers */ cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1b7b, 1); - cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308, 1); - cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f, 1);
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; + /* HSDET_AUTO_DONE */ if (reg_cdc_status & CS42L42_HSDET_AUTO_DONE) {