The TAS6426 has a register that reports channel faults such as overcurrent and continuous DC output. Add reporting of this here.
Signed-off-by: Andrew F. Davis afd@ti.com --- sound/soc/codecs/tas6424.c | 52 +++++++++++++++++++++++++++++++++----- sound/soc/codecs/tas6424.h | 10 ++++++++ 2 files changed, 56 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/tas6424.c b/sound/soc/codecs/tas6424.c index aac559fffc1a..36aebdb8f55c 100644 --- a/sound/soc/codecs/tas6424.c +++ b/sound/soc/codecs/tas6424.c @@ -41,6 +41,7 @@ struct tas6424_data { struct regmap *regmap; struct regulator_bulk_data supplies[TAS6424_NUM_SUPPLIES]; struct delayed_work fault_check_work; + unsigned int last_cfault; unsigned int last_fault1; unsigned int last_fault2; unsigned int last_warn; @@ -406,6 +407,51 @@ static void tas6424_fault_check_work(struct work_struct *work) unsigned int reg; int ret;
+ ret = regmap_read(tas6424->regmap, TAS6424_CHANNEL_FAULT, ®); + if (ret < 0) { + dev_err(dev, "failed to read CHANNEL_FAULT register: %d\n", ret); + goto out; + } + + if (!reg) { + tas6424->last_cfault = reg; + goto check_global_fault1_reg; + } + + /* + * Only flag errors once for a given occurrence. This is needed as + * the TAS6424 will take time clearing the fault condition internally + * during which we don't want to bombard the system with the same + * error message over and over. + */ + if ((reg & TAS6424_FAULT_OC_CH1) && !(tas6424->last_cfault & TAS6424_FAULT_OC_CH1)) + dev_crit(dev, "experienced a channel 1 overcurrent fault\n"); + + if ((reg & TAS6424_FAULT_OC_CH2) && !(tas6424->last_cfault & TAS6424_FAULT_OC_CH2)) + dev_crit(dev, "experienced a channel 2 overcurrent fault\n"); + + if ((reg & TAS6424_FAULT_OC_CH3) && !(tas6424->last_cfault & TAS6424_FAULT_OC_CH3)) + dev_crit(dev, "experienced a channel 3 overcurrent fault\n"); + + if ((reg & TAS6424_FAULT_OC_CH4) && !(tas6424->last_cfault & TAS6424_FAULT_OC_CH4)) + dev_crit(dev, "experienced a channel 4 overcurrent fault\n"); + + if ((reg & TAS6424_FAULT_DC_CH1) && !(tas6424->last_cfault & TAS6424_FAULT_DC_CH1)) + dev_crit(dev, "experienced a channel 1 DC fault\n"); + + if ((reg & TAS6424_FAULT_DC_CH2) && !(tas6424->last_cfault & TAS6424_FAULT_DC_CH2)) + dev_crit(dev, "experienced a channel 2 DC fault\n"); + + if ((reg & TAS6424_FAULT_DC_CH3) && !(tas6424->last_cfault & TAS6424_FAULT_DC_CH3)) + dev_crit(dev, "experienced a channel 3 DC fault\n"); + + if ((reg & TAS6424_FAULT_DC_CH4) && !(tas6424->last_cfault & TAS6424_FAULT_DC_CH4)) + dev_crit(dev, "experienced a channel 4 DC fault\n"); + + /* Store current fault1 value so we can detect any changes next time */ + tas6424->last_cfault = reg; + +check_global_fault1_reg: ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT1, ®); if (ret < 0) { dev_err(dev, "failed to read GLOB_FAULT1 register: %d\n", ret); @@ -429,12 +475,6 @@ static void tas6424_fault_check_work(struct work_struct *work) goto check_global_fault2_reg; }
- /* - * Only flag errors once for a given occurrence. This is needed as - * the TAS6424 will take time clearing the fault condition internally - * during which we don't want to bombard the system with the same - * error message over and over. - */ if ((reg & TAS6424_FAULT_PVDD_OV) && !(tas6424->last_fault1 & TAS6424_FAULT_PVDD_OV)) dev_crit(dev, "experienced a PVDD overvoltage fault\n");
diff --git a/sound/soc/codecs/tas6424.h b/sound/soc/codecs/tas6424.h index b5958c45ed0e..c67a7835ca66 100644 --- a/sound/soc/codecs/tas6424.h +++ b/sound/soc/codecs/tas6424.h @@ -115,6 +115,16 @@ #define TAS6424_LDGBYPASS_SHIFT 0 #define TAS6424_LDGBYPASS_MASK BIT(TAS6424_LDGBYPASS_SHIFT)
+/* TAS6424_GLOB_FAULT1_REG */ +#define TAS6424_FAULT_OC_CH1 BIT(7) +#define TAS6424_FAULT_OC_CH2 BIT(6) +#define TAS6424_FAULT_OC_CH3 BIT(5) +#define TAS6424_FAULT_OC_CH4 BIT(4) +#define TAS6424_FAULT_DC_CH1 BIT(3) +#define TAS6424_FAULT_DC_CH2 BIT(2) +#define TAS6424_FAULT_DC_CH3 BIT(1) +#define TAS6424_FAULT_DC_CH4 BIT(0) + /* TAS6424_GLOB_FAULT1_REG */ #define TAS6424_FAULT_CLOCK BIT(4) #define TAS6424_FAULT_PVDD_OV BIT(3)