korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 08:44:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: codecs: wcd934x: do not switch off SIDO Buck when codec is in use

Browse Source 
SIDO(Single-Inductor Dual-Ouput) Buck powers up both analog and digital
circuits along with internal memory, powering off this is the last thing
that codec should do when going to very low power.

Current code was powering off this Buck if there are no users of sysclk,
which is not correct. Powering off this buck will result in no register access.
This code path was never tested until recently after adding pm support
in SoundWire controller. Fix this by removing the buck poweroff when the
codec is active and also the code that is not used.

Without this patch all the read/write transactions will never complete and
results in SLIMBus Errors like:

qcom,slim-ngd qcom,slim-ngd.1: Tx:MT:0x0, MC:0x60, LA:0xcf failed:-110
wcd934x-codec wcd934x-codec.1.auto: ASoC: error at soc_component_read_no_lock
	on wcd934x-codec.1.auto for register: [0x00000d05] -110
qcom,slim-ngd-ctrl 171c0000.slim: Error Interrupt received 0x82000000

Reported-by: Amit Pundir <amit.pundir@linaro.org>
Fixes: a61f3b4f47 ("ASoC: wcd934x: add support to wcd9340/wcd9341 codec")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Amit Pundir <amit.pundir@linaro.org>
Link: https://lore.kernel.org/r/20220407094313.2880-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Kandagatla 2022-04-07 10:43:13 +01:00 committed by Mark Brown
parent 9b91d0ece2
commit db6dd1bee6
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sound/soc/codecs/wcd934x.c
View File

@ -1274,29 +1274,7 @@ static int wcd934x_set_sido_input_src(struct wcd934x_codec *wcd, int sido_src)
if (sido_src == wcd->sido_input_src)
return 0;
if (sido_src == SIDO_SOURCE_INTERNAL) {
regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
WCD934X_ANA_BUCK_HI_ACCU_EN_MASK, 0);
usleep_range(100, 110);
regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
WCD934X_ANA_BUCK_HI_ACCU_PRE_ENX_MASK, 0x0);
usleep_range(100, 110);
regmap_update_bits(wcd->regmap, WCD934X_ANA_RCO,
WCD934X_ANA_RCO_BG_EN_MASK, 0);
usleep_range(100, 110);
regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
WCD934X_ANA_BUCK_PRE_EN1_MASK,
WCD934X_ANA_BUCK_PRE_EN1_ENABLE);
usleep_range(100, 110);
regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
WCD934X_ANA_BUCK_PRE_EN2_MASK,
WCD934X_ANA_BUCK_PRE_EN2_ENABLE);
usleep_range(100, 110);
regmap_update_bits(wcd->regmap, WCD934X_ANA_BUCK_CTL,
WCD934X_ANA_BUCK_HI_ACCU_EN_MASK,
WCD934X_ANA_BUCK_HI_ACCU_ENABLE);
usleep_range(100, 110);
} else if (sido_src == SIDO_SOURCE_RCO_BG) {
if (sido_src == SIDO_SOURCE_RCO_BG) {
regmap_update_bits(wcd->regmap, WCD934X_ANA_RCO,
WCD934X_ANA_RCO_BG_EN_MASK,
WCD934X_ANA_RCO_BG_ENABLE);
@ -1382,8 +1360,6 @@ static int wcd934x_disable_ana_bias_and_syclk(struct wcd934x_codec *wcd)
regmap_update_bits(wcd->regmap, WCD934X_CLK_SYS_MCLK_PRG,
WCD934X_EXT_CLK_BUF_EN_MASK |
WCD934X_MCLK_EN_MASK, 0x0);
wcd934x_set_sido_input_src(wcd, SIDO_SOURCE_INTERNAL);
regmap_update_bits(wcd->regmap, WCD934X_ANA_BIAS,
WCD934X_ANA_BIAS_EN_MASK, 0);
regmap_update_bits(wcd->regmap, WCD934X_ANA_BIAS,