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ALSA: hda/cs8409: Avoid setting the same I2C address for every access

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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>
This commit is contained in:
Lucas Tanure 2021-08-11 19:56:41 +01:00 committed by Takashi Iwai
parent 647d50a0c3
commit d395fd7864
2 changed files with 18 additions and 2 deletions
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19
sound/pci/hda/patch_cs8409.c
View File

@ -155,6 +155,21 @@ static int cs8409_i2c_wait_complete(struct hda_codec *codec)
return -1;
}
/**
* 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
@ -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);

1
sound/pci/hda/patch_cs8409.h
View File

@ -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 */