diff options
| author | Lucas Tanure <tanureal@opensource.cirrus.com> | 2021-08-11 19:56:41 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-08-12 13:41:48 +0200 |
| commit | d395fd7864c553908a83e10112184febbb9cf81c (patch) | |
| tree | b3f1df6110b3422de23e8c0eea14d23c7b484ead /sound/pci | |
| parent | 647d50a0c30402d2156ca201a74d77d58c7ef5ff (diff) | |
| download | linux-d395fd7864c553908a83e10112184febbb9cf81c.tar.gz | |
ALSA: hda/cs8409: Avoid setting the same I2C address for every access
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210811185654.6837-15-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/patch_cs8409.c | 19 | ||||
| -rw-r--r-- | sound/pci/hda/patch_cs8409.h | 1 |
2 files changed, 18 insertions, 2 deletions
diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c index 420f3a612fc4..e683349ebd50 100644 --- a/sound/pci/hda/patch_cs8409.c +++ b/sound/pci/hda/patch_cs8409.c @@ -156,6 +156,21 @@ static int cs8409_i2c_wait_complete(struct hda_codec *codec) } /** + * cs8409_set_i2c_dev_addr - Set i2c address for transaction + * @codec: the codec instance + * @addr: I2C Address + */ +static void cs8409_set_i2c_dev_addr(struct hda_codec *codec, unsigned int addr) +{ + struct cs8409_spec *spec = codec->spec; + + if (spec->dev_addr != addr) { + cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, addr); + spec->dev_addr = addr; + } +} + +/** * cs8409_i2c_read - CS8409 I2C Read. * @codec: the codec instance * @i2c_address: I2C Address @@ -176,7 +191,7 @@ static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, un return -EPERM; cs8409_enable_i2c_clock(codec); - cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, i2c_address); + cs8409_set_i2c_dev_addr(codec, i2c_address); if (paged) { cs8409_vendor_coef_set(codec, CS8409_I2C_QWRITE, i2c_reg >> 8); @@ -222,7 +237,7 @@ static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, u return -EPERM; cs8409_enable_i2c_clock(codec); - cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, i2c_address); + cs8409_set_i2c_dev_addr(codec, i2c_address); if (paged) { cs8409_vendor_coef_set(codec, CS8409_I2C_QWRITE, i2c_reg >> 8); diff --git a/sound/pci/hda/patch_cs8409.h b/sound/pci/hda/patch_cs8409.h index 542582c213d2..c2c208218e34 100644 --- a/sound/pci/hda/patch_cs8409.h +++ b/sound/pci/hda/patch_cs8409.h @@ -281,6 +281,7 @@ struct cs8409_spec { struct mutex cs8409_i2c_mux; unsigned int i2c_clck_enabled; + unsigned int dev_addr; struct delayed_work i2c_clk_work; /* verb exec op override */ |