[PATCH v1 0/1] ASoC: cs42l42: Implement Manual Type detection as fallback
For some headsets CS42L42 autodetect mode is not working correctly. They will be detected as unknown types or as headphones. According to the CS42L42 datasheet, if the headset autodetect failed, then the driver should switch to manual mode and perform a manual steps sequence. These steps were missing in the current driver code. This patch will add manual mode fallback steps in case autodetect failed. The default behavior is not affected, manual mode runs only when autodetect failed.
Tested for regression with autodetect with all known headsets - no regression. Tested with all headsets customers reported as false detected: Gumdrop DropTech B1 - detected as headset OK HUAWEI AM115 - detected as headset OK UGREEN EP103 - detected as headset OK HONOR AM116 - detected as headset OK
Stefan Binding (1): ASoC: cs42l42: Implement Manual Type detection as fallback
sound/soc/codecs/cs42l42.c | 104 ++++++++++++++++++++++++++++++++----- sound/soc/codecs/cs42l42.h | 54 +++++++++++++++++++ 2 files changed, 146 insertions(+), 12 deletions(-)
From: Stefan Binding sbinding@opensource.cirrus.com
Some headsets are not detected correctly by Automatic Type Detection on cs42l42. Instead, Manual Type Detection can be used to give a more accurate value.
Signed-off-by: Stefan Binding sbinding@opensource.cirrus.com Signed-off-by: Vitaly Rodionov vitalyr@opensource.cirrus.com --- sound/soc/codecs/cs42l42.c | 104 ++++++++++++++++++++++++++++++++----- sound/soc/codecs/cs42l42.h | 54 +++++++++++++++++++ 2 files changed, 146 insertions(+), 12 deletions(-)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index fb1e4c33e27d..c586ebff45f7 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -1046,37 +1046,117 @@ static struct snd_soc_dai_driver cs42l42_dai = { .ops = &cs42l42_ops, };
-static void cs42l42_process_hs_type_detect(struct cs42l42_private *cs42l42) +static void cs42l42_manual_hs_type_detect(struct cs42l42_private *cs42l42) { unsigned int hs_det_status; - unsigned int int_status; + unsigned int hs_det_comp; + unsigned int hs_det_sw;
- /* Mask the auto detect interrupt */ + /* Set hs detect to manual, active mode */ regmap_update_bits(cs42l42->regmap, - CS42L42_CODEC_INT_MASK, - CS42L42_PDN_DONE_MASK | - CS42L42_HSDET_AUTO_DONE_MASK, - (1 << CS42L42_PDN_DONE_SHIFT) | - (1 << CS42L42_HSDET_AUTO_DONE_SHIFT)); + CS42L42_HSDET_CTL2, + CS42L42_HSDET_CTRL_MASK | + CS42L42_HSDET_SET_MASK | + CS42L42_HSBIAS_REF_MASK | + CS42L42_HSDET_AUTO_TIME_MASK, + (1 << CS42L42_HSDET_CTRL_SHIFT) | + (0 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSBIAS_REF_SHIFT) | + (0 << CS42L42_HSDET_AUTO_TIME_SHIFT)); + + /* Open the SW_HSB_HS3 switch and close SW_HSB_HS4 for a Type 1 headset. */ + regmap_write(cs42l42->regmap, CS42L42_HS_SWITCH_CTL, CS42L42_HSDET_SW_COMP1); + + regmap_read(cs42l42->regmap, CS42L42_HS_DET_STATUS, &hs_det_status); + + hs_det_comp = (hs_det_status & CS42L42_HSDET_COMP1_OUT_MASK) >> + CS42L42_HSDET_COMP1_OUT_SHIFT; + + /* Close the SW_HSB_HS3 switch for a Type 2 headset. */ + regmap_write(cs42l42->regmap, CS42L42_HS_SWITCH_CTL, CS42L42_HSDET_SW_COMP2); + + regmap_read(cs42l42->regmap, CS42L42_HS_DET_STATUS, &hs_det_status); + + hs_det_comp |= ((hs_det_status & CS42L42_HSDET_COMP2_OUT_MASK) >> + CS42L42_HSDET_COMP2_OUT_SHIFT) << 1; + + switch (hs_det_comp) { + case CS42L42_HSDET_COMP_TYPE1: + cs42l42->hs_type = CS42L42_PLUG_CTIA; + hs_det_sw = CS42L42_HSDET_SW_TYPE1; + break; + case CS42L42_HSDET_COMP_TYPE2: + cs42l42->hs_type = CS42L42_PLUG_OMTP; + hs_det_sw = CS42L42_HSDET_SW_TYPE2; + break; + case CS42L42_HSDET_COMP_TYPE3: + cs42l42->hs_type = CS42L42_PLUG_HEADPHONE; + hs_det_sw = CS42L42_HSDET_SW_TYPE3; + break; + default: + cs42l42->hs_type = CS42L42_PLUG_INVALID; + hs_det_sw = CS42L42_HSDET_SW_TYPE4; + break; + }
- /* Set hs detect to automatic, disabled mode */ + /* Set Switches */ + regmap_write(cs42l42->regmap, CS42L42_HS_SWITCH_CTL, hs_det_sw); + + /* Set HSDET mode to Manual—Disabled */ regmap_update_bits(cs42l42->regmap, CS42L42_HSDET_CTL2, CS42L42_HSDET_CTRL_MASK | CS42L42_HSDET_SET_MASK | CS42L42_HSBIAS_REF_MASK | CS42L42_HSDET_AUTO_TIME_MASK, - (2 << CS42L42_HSDET_CTRL_SHIFT) | - (2 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSDET_CTRL_SHIFT) | + (0 << CS42L42_HSDET_SET_SHIFT) | (0 << CS42L42_HSBIAS_REF_SHIFT) | - (3 << CS42L42_HSDET_AUTO_TIME_SHIFT)); + (0 << CS42L42_HSDET_AUTO_TIME_SHIFT)); +} + +static void cs42l42_process_hs_type_detect(struct cs42l42_private *cs42l42) +{ + unsigned int hs_det_status; + unsigned int int_status;
/* Read and save the hs detection result */ regmap_read(cs42l42->regmap, CS42L42_HS_DET_STATUS, &hs_det_status);
+ /* Mask the auto detect interrupt */ + regmap_update_bits(cs42l42->regmap, + CS42L42_CODEC_INT_MASK, + CS42L42_PDN_DONE_MASK | + CS42L42_HSDET_AUTO_DONE_MASK, + (1 << CS42L42_PDN_DONE_SHIFT) | + (1 << CS42L42_HSDET_AUTO_DONE_SHIFT)); + + cs42l42->hs_type = (hs_det_status & CS42L42_HSDET_TYPE_MASK) >> CS42L42_HSDET_TYPE_SHIFT;
+ /* Run Manual detection if auto detect has not found a headset. + * We Re-Run with Manual Detection if the original detection was invalid or headphones, + * to ensure that a headset mic is detected in all cases. + */ + if (cs42l42->hs_type == CS42L42_PLUG_INVALID || + cs42l42->hs_type == CS42L42_PLUG_HEADPHONE) { + dev_dbg(cs42l42->component->dev, "Running Manual Detection Fallback\n"); + cs42l42_manual_hs_type_detect(cs42l42); + } else { + /* Set hs detect to automatic, disabled mode */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSDET_CTL2, + CS42L42_HSDET_CTRL_MASK | + CS42L42_HSDET_SET_MASK | + CS42L42_HSBIAS_REF_MASK | + CS42L42_HSDET_AUTO_TIME_MASK, + (2 << CS42L42_HSDET_CTRL_SHIFT) | + (2 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSBIAS_REF_SHIFT) | + (3 << CS42L42_HSDET_AUTO_TIME_SHIFT)); + } + /* Set up button detection */ if ((cs42l42->hs_type == CS42L42_PLUG_CTIA) || (cs42l42->hs_type == CS42L42_PLUG_OMTP)) { diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h index 8734f6828f3e..2aeabba73e05 100644 --- a/sound/soc/codecs/cs42l42.h +++ b/sound/soc/codecs/cs42l42.h @@ -228,6 +228,60 @@ #define CS42L42_PLUG_HEADPHONE 2 #define CS42L42_PLUG_INVALID 3
+#define CS42L42_HSDET_SW_COMP1 ((0 << CS42L42_SW_GNDHS_HS4_SHIFT) | \ + (1 << CS42L42_SW_GNDHS_HS3_SHIFT) | \ + (1 << CS42L42_SW_HSB_HS4_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS3_SHIFT) | \ + (0 << CS42L42_SW_HSB_FILT_HS4_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS3_SHIFT) | \ + (0 << CS42L42_SW_REF_HS4_SHIFT) | \ + (1 << CS42L42_SW_REF_HS3_SHIFT)) +#define CS42L42_HSDET_SW_COMP2 ((1 << CS42L42_SW_GNDHS_HS4_SHIFT) | \ + (0 << CS42L42_SW_GNDHS_HS3_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS4_SHIFT) | \ + (1 << CS42L42_SW_HSB_HS3_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS4_SHIFT) | \ + (0 << CS42L42_SW_HSB_FILT_HS3_SHIFT) | \ + (1 << CS42L42_SW_REF_HS4_SHIFT) | \ + (0 << CS42L42_SW_REF_HS3_SHIFT)) +#define CS42L42_HSDET_SW_TYPE1 ((0 << CS42L42_SW_GNDHS_HS4_SHIFT) | \ + (1 << CS42L42_SW_GNDHS_HS3_SHIFT) | \ + (1 << CS42L42_SW_HSB_HS4_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS3_SHIFT) | \ + (0 << CS42L42_SW_HSB_FILT_HS4_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS3_SHIFT) | \ + (0 << CS42L42_SW_REF_HS4_SHIFT) | \ + (1 << CS42L42_SW_REF_HS3_SHIFT)) +#define CS42L42_HSDET_SW_TYPE2 ((1 << CS42L42_SW_GNDHS_HS4_SHIFT) | \ + (0 << CS42L42_SW_GNDHS_HS3_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS4_SHIFT) | \ + (1 << CS42L42_SW_HSB_HS3_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS4_SHIFT) | \ + (0 << CS42L42_SW_HSB_FILT_HS3_SHIFT) | \ + (1 << CS42L42_SW_REF_HS4_SHIFT) | \ + (0 << CS42L42_SW_REF_HS3_SHIFT)) +#define CS42L42_HSDET_SW_TYPE3 ((1 << CS42L42_SW_GNDHS_HS4_SHIFT) | \ + (1 << CS42L42_SW_GNDHS_HS3_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS4_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS3_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS4_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS3_SHIFT) | \ + (1 << CS42L42_SW_REF_HS4_SHIFT) | \ + (1 << CS42L42_SW_REF_HS3_SHIFT)) +#define CS42L42_HSDET_SW_TYPE4 ((0 << CS42L42_SW_GNDHS_HS4_SHIFT) | \ + (1 << CS42L42_SW_GNDHS_HS3_SHIFT) | \ + (1 << CS42L42_SW_HSB_HS4_SHIFT) | \ + (0 << CS42L42_SW_HSB_HS3_SHIFT) | \ + (0 << CS42L42_SW_HSB_FILT_HS4_SHIFT) | \ + (1 << CS42L42_SW_HSB_FILT_HS3_SHIFT) | \ + (0 << CS42L42_SW_REF_HS4_SHIFT) | \ + (1 << CS42L42_SW_REF_HS3_SHIFT)) + +#define CS42L42_HSDET_COMP_TYPE1 1 +#define CS42L42_HSDET_COMP_TYPE2 2 +#define CS42L42_HSDET_COMP_TYPE3 0 +#define CS42L42_HSDET_COMP_TYPE4 3 + #define CS42L42_HS_CLAMP_DISABLE (CS42L42_PAGE_11 + 0x29) #define CS42L42_HS_CLAMP_DISABLE_SHIFT 0 #define CS42L42_HS_CLAMP_DISABLE_MASK (1 << CS42L42_HS_CLAMP_DISABLE_SHIFT)
On Thu, Sep 16, 2021 at 11:27:49AM +0100, Vitaly Rodionov wrote:
For some headsets CS42L42 autodetect mode is not working correctly. They will be detected as unknown types or as headphones. According to the CS42L42 datasheet, if the headset autodetect failed, then the driver should switch to manual mode and perform a manual steps sequence.
Please don't send cover letters for single patches, if there is anything that needs saying put it in the changelog of the patch or after the --- if it's administrative stuff. This reduces mail volume and ensures that any important information is recorded in the changelog rather than being lost.
On 16/09/2021 12:19 pm, Mark Brown wrote:
On Thu, Sep 16, 2021 at 11:27:49AM +0100, Vitaly Rodionov wrote:
For some headsets CS42L42 autodetect mode is not working correctly. They will be detected as unknown types or as headphones. According to the CS42L42 datasheet, if the headset autodetect failed, then the driver should switch to manual mode and perform a manual steps sequence.
Please don't send cover letters for single patches, if there is anything that needs saying put it in the changelog of the patch or after the --- if it's administrative stuff. This reduces mail volume and ensures that any important information is recorded in the changelog rather than being lost.
Hi Mark,
Got it. Thanks
On Thu, 16 Sep 2021 11:27:49 +0100, Vitaly Rodionov wrote:
For some headsets CS42L42 autodetect mode is not working correctly. They will be detected as unknown types or as headphones. According to the CS42L42 datasheet, if the headset autodetect failed, then the driver should switch to manual mode and perform a manual steps sequence. These steps were missing in the current driver code. This patch will add manual mode fallback steps in case autodetect failed. The default behavior is not affected, manual mode runs only when autodetect failed.
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: cs42l42: Implement Manual Type detection as fallback commit: 12451814496a5433f41843ca4e3d9961d69304f7
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
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Thanks, Mark
participants (2)
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Mark Brown -
Vitaly Rodionov