diff options
| author | Lucas Tanure <tanureal@opensource.cirrus.com> | 2021-08-11 19:56:38 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-08-12 13:41:46 +0200 |
| commit | a1a6c7df2b2e9e2291e4c1c621b6092b07777934 (patch) | |
| tree | 58dfa14dabcfdf66f362c0cf65f6442c7944b041 /sound/pci | |
| parent | db0ae848a9896b4d18a793d47dc672257391045c (diff) | |
| download | linux-a1a6c7df2b2e9e2291e4c1c621b6092b07777934.tar.bz2 | |
ALSA: hda/cs8409: Prevent I2C access during suspend time
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210811185654.6837-12-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 | 14 | ||||
| -rw-r--r-- | sound/pci/hda/patch_cs8409.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c index 4ad832f5c4ba..0b13bcecd778 100644 --- a/sound/pci/hda/patch_cs8409.c +++ b/sound/pci/hda/patch_cs8409.c @@ -127,9 +127,13 @@ static int cs8409_i2c_wait_complete(struct hda_codec *codec) static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg, unsigned int paged) { + struct cs8409_spec *spec = codec->spec; unsigned int i2c_reg_data; unsigned int read_data; + if (spec->cs42l42_suspended) + return -EPERM; + cs8409_enable_i2c_clock(codec, 1); cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, i2c_address); @@ -172,8 +176,12 @@ static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, un static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg, unsigned int i2c_data, unsigned int paged) { + struct cs8409_spec *spec = codec->spec; unsigned int i2c_reg_data; + if (spec->cs42l42_suspended) + return -EPERM; + cs8409_enable_i2c_clock(codec, 1); cs8409_vendor_coef_set(codec, CS8409_I2C_ADDR, i2c_address); @@ -371,6 +379,8 @@ static void cs8409_cs42l42_reset(struct hda_codec *codec) /* wait ~10ms */ usleep_range(10000, 15000); + spec->cs42l42_suspended = 0; + mutex_lock(&spec->cs8409_i2c_mux); /* Clear interrupts, by reading interrupt status registers */ @@ -594,6 +604,9 @@ static int cs8409_suspend(struct hda_codec *codec) /* Power down CS42L42 ASP/EQ/MIX/HP */ cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1101, 0xfe, 1); mutex_unlock(&spec->cs8409_i2c_mux); + + spec->cs42l42_suspended = 1; + /* Assert CS42L42 RTS# line */ snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, 0); @@ -759,6 +772,7 @@ void cs8409_cs42l42_fixups(struct hda_codec *codec, const struct hda_fixup *fix, spec->cs42l42_hp_jack_in = 0; spec->cs42l42_mic_jack_in = 0; + spec->cs42l42_suspended = 1; /* Basic initial sequence for specific hw configuration */ snd_hda_sequence_write(codec, cs8409_cs42l42_init_verbs); diff --git a/sound/pci/hda/patch_cs8409.h b/sound/pci/hda/patch_cs8409.h index 1d3ce28415fa..0f2084b6ec8e 100644 --- a/sound/pci/hda/patch_cs8409.h +++ b/sound/pci/hda/patch_cs8409.h @@ -269,6 +269,7 @@ struct cs8409_spec { unsigned int cs42l42_hp_jack_in:1; unsigned int cs42l42_mic_jack_in:1; unsigned int cs42l42_volume_init:1; + unsigned int cs42l42_suspended:1; char cs42l42_hp_volume[CS42L42_HP_CH]; char cs42l42_hs_mic_volume[CS42L42_HS_MIC_CH]; |