[PATCH 1/2] ASoC: dt-bindings: max98396: Document data monitor properties
This device features a data monitor that puts the device in software reset upon a configurable set of events.
Signed-off-by: Daniel Mack daniel@zonque.org --- .../bindings/sound/adi,max98396.yaml | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/adi,max98396.yaml b/Documentation/devicetree/bindings/sound/adi,max98396.yaml index 8d2ef991db40..f4eefe10c494 100644 --- a/Documentation/devicetree/bindings/sound/adi,max98396.yaml +++ b/Documentation/devicetree/bindings/sound/adi,max98396.yaml @@ -78,6 +78,43 @@ properties: interleaved on a single output channel. type: boolean
+ adi,dmon-stuck-enable: + description: + Enables the "data monitor stuck" feature. Once the data monitor is + enabled, it actively monitors the selected input data (from DIN) to the + speaker amplifier. Once a data error is detected, the data monitor + automatically places the device into software shutdown. + type: boolean + + adi,dmon-stuck-threshold-bits: + description: + Sets the threshold for the "data monitor stuck" feature, in bits. + $ref: "/schemas/types.yaml#/definitions/uint32" + enum: [9, 11, 13, 15] + default: 15 + + adi,dmon-magnitude-enable: + description: + Enables the "data monitor magnitude" feature. Once the data monitor is + enabled, it actively monitors the selected input data (from DIN) to the + speaker amplifier. Once a data error is detected, the data monitor + automatically places the device into software shutdown. + type: boolean + + adi,dmon-magnitude-threshold-bits: + description: + Sets the threshold for the "data monitor magnitude" feature, in bits. + $ref: "/schemas/types.yaml#/definitions/uint32" + enum: [2, 3, 4, 5] + default: 5 + + adi,dmon-duration-msecs: + description: + Sets the duration for the "data monitor" feature, in milliseconds. + $ref: "/schemas/types.yaml#/definitions/uint32" + enum: [64, 256, 1024, 4096] + default: 64 + reset-gpios: maxItems: 1
Allow the data monitor features to be enabled explicitly, and enable control over their details.
Signed-off-by: Daniel Mack daniel@zonque.org --- sound/soc/codecs/max98396.c | 103 ++++++++++++++++++++++++++++++++++++ sound/soc/codecs/max98396.h | 14 +++++ 2 files changed, 117 insertions(+)
diff --git a/sound/soc/codecs/max98396.c b/sound/soc/codecs/max98396.c index 42479f3ab663..e1577d20c42f 100644 --- a/sound/soc/codecs/max98396.c +++ b/sound/soc/codecs/max98396.c @@ -1486,6 +1486,87 @@ static int max98396_probe(struct snd_soc_component *component) MAX98396_CLK_MON_AUTO_RESTART_MASK, MAX98396_CLK_MON_AUTO_RESTART_MASK);
+ regmap_update_bits(max98396->regmap, + MAX98396_R203F_ENABLE_CTRLS, + MAX98396_CTRL_DMON_STUCK_EN_MASK, + max98396->dmon_stuck_enable ? + MAX98396_CTRL_DMON_STUCK_EN_MASK : 0); + + regmap_update_bits(max98396->regmap, + MAX98396_R203F_ENABLE_CTRLS, + MAX98396_CTRL_DMON_MAG_EN_MASK, + max98396->dmon_mag_enable ? + MAX98396_CTRL_DMON_MAG_EN_MASK : 0); + + switch (max98396->dmon_duration) { + case 64: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_DURATION_MASK, 0); + break; + case 256: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_DURATION_MASK, 1); + break; + case 1024: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_DURATION_MASK, 2); + break; + case 4096: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_DURATION_MASK, 3); + break; + default: + dev_err(component->dev, "Invalid DMON duration %d\n", + max98396->dmon_duration); + } + + switch (max98396->dmon_stuck_threshold) { + case 15: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_STUCK_THRESH_MASK, + 0 << MAX98396_DMON_STUCK_THRESH_SHIFT); + break; + case 13: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_STUCK_THRESH_MASK, + 1 << MAX98396_DMON_STUCK_THRESH_SHIFT); + break; + case 22: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_STUCK_THRESH_MASK, + 2 << MAX98396_DMON_STUCK_THRESH_SHIFT); + break; + case 9: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_STUCK_THRESH_MASK, + 3 << MAX98396_DMON_STUCK_THRESH_SHIFT); + break; + default: + dev_err(component->dev, "Invalid DMON stuck threshold %d\n", + max98396->dmon_stuck_threshold); + } + + switch (max98396->dmon_mag_threshold) { + case 2 ... 5: + regmap_update_bits(max98396->regmap, + MAX98396_R2039_DATA_MON_CTRL, + MAX98396_DMON_STUCK_THRESH_MASK, + (5 - max98396->dmon_mag_threshold) + << MAX98396_DMON_MAG_THRESH_SHIFT); + break; + default: + dev_err(component->dev, "Invalid DMON magnitude threshold %d\n", + max98396->dmon_mag_threshold); + } + /* Speaker Amplifier PCM RX Enable by default */ regmap_update_bits(max98396->regmap, MAX98396_R205E_PCM_RX_EN, @@ -1619,6 +1700,28 @@ static void max98396_read_device_property(struct device *dev, max98396->bypass_slot = value & 0xF; else max98396->bypass_slot = 0; + + max98396->dmon_stuck_enable = + device_property_read_bool(dev, "adi,dmon-stuck-enable"); + + if (!device_property_read_u32(dev, "adi,dmon-stuck-threshold-bits", &value)) + max98396->dmon_stuck_threshold = value; + else + max98396->dmon_stuck_threshold = 15; + + max98396->dmon_mag_enable = + device_property_read_bool(dev, "adi,dmon-magnitude-enable"); + + if (!device_property_read_u32(dev, "adi,dmon-magnitude-threshold-bits", &value)) + max98396->dmon_mag_threshold = value; + else + max98396->dmon_mag_threshold = 5; + + if (!device_property_read_u32(dev, "adi,dmon-duration-msecs", &value)) + max98396->dmon_duration = value; + else + max98396->dmon_duration = 64; + }
static void max98396_core_supplies_disable(void *priv) diff --git a/sound/soc/codecs/max98396.h b/sound/soc/codecs/max98396.h index 7278c779989a..d396aa3e698b 100644 --- a/sound/soc/codecs/max98396.h +++ b/sound/soc/codecs/max98396.h @@ -212,8 +212,17 @@ #define MAX98396_CLK_MON_AUTO_RESTART_MASK (0x1 << 0) #define MAX98396_CLK_MON_AUTO_RESTART_SHIFT (0)
+/* MAX98396_R2039_DATA_MON_CTRL */ +#define MAX98396_DMON_MAG_THRESH_SHIFT (4) +#define MAX98396_DMON_MAG_THRESH_MASK (0x3 << MAX98396_DMON_MAG_THRESH_SHIFT) +#define MAX98396_DMON_STUCK_THRESH_SHIFT (2) +#define MAX98396_DMON_STUCK_THRESH_MASK (0x3 << MAX98396_DMON_STUCK_THRESH_SHIFT) +#define MAX98396_DMON_DURATION_MASK (0x3) + /* MAX98396_R203F_ENABLE_CTRLS */ #define MAX98396_CTRL_CMON_EN_SHIFT (0) +#define MAX98396_CTRL_DMON_STUCK_EN_MASK (0x1 << 1) +#define MAX98396_CTRL_DMON_MAG_EN_MASK (0x1 << 2)
/* MAX98396_R2041_PCM_MODE_CFG */ #define MAX98396_PCM_MODE_CFG_FORMAT_MASK (0x7 << 3) @@ -305,6 +314,11 @@ struct max98396_priv { unsigned int i_slot; unsigned int spkfb_slot; unsigned int bypass_slot; + bool dmon_stuck_enable; + unsigned int dmon_stuck_threshold; + bool dmon_mag_enable; + unsigned int dmon_mag_threshold; + unsigned int dmon_duration; bool interleave_mode; bool tdm_mode; int tdm_max_samplerate;
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Daniel Mack