diff options
Diffstat (limited to 'sound/soc/codecs/tas6424.c')
| -rw-r--r-- | sound/soc/codecs/tas6424.c | 70 |
1 files changed, 58 insertions, 12 deletions
diff --git a/sound/soc/codecs/tas6424.c b/sound/soc/codecs/tas6424.c index 14999b999fd3..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; @@ -406,9 +407,54 @@ 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 FAULT1 register: %d\n", ret); + dev_err(dev, "failed to read GLOB_FAULT1 register: %d\n", ret); goto out; } @@ -424,15 +470,11 @@ static void tas6424_fault_check_work(struct work_struct *work) TAS6424_FAULT_PVDD_UV | TAS6424_FAULT_VBAT_UV; - if (reg) + if (!reg) { + tas6424->last_fault1 = reg; 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"); @@ -451,7 +493,7 @@ static void tas6424_fault_check_work(struct work_struct *work) check_global_fault2_reg: ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT2, ®); if (ret < 0) { - dev_err(dev, "failed to read FAULT2 register: %d\n", ret); + dev_err(dev, "failed to read GLOB_FAULT2 register: %d\n", ret); goto out; } @@ -461,8 +503,10 @@ check_global_fault2_reg: TAS6424_FAULT_OTSD_CH3 | TAS6424_FAULT_OTSD_CH4; - if (!reg) + if (!reg) { + tas6424->last_fault2 = reg; goto check_warn_reg; + } if ((reg & TAS6424_FAULT_OTSD) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD)) dev_crit(dev, "experienced a global overtemp shutdown\n"); @@ -497,8 +541,10 @@ check_warn_reg: TAS6424_WARN_VDD_OTW_CH3 | TAS6424_WARN_VDD_OTW_CH4; - if (!reg) + if (!reg) { + tas6424->last_warn = reg; goto out; + } if ((reg & TAS6424_WARN_VDD_UV) && !(tas6424->last_warn & TAS6424_WARN_VDD_UV)) dev_warn(dev, "experienced a VDD under voltage condition\n"); @@ -524,7 +570,7 @@ check_warn_reg: /* Store current warn value so we can detect any changes next time */ tas6424->last_warn = reg; - /* Clear any faults by toggling the CLEAR_FAULT control bit */ + /* Clear any warnings by toggling the CLEAR_FAULT control bit */ ret = regmap_write_bits(tas6424->regmap, TAS6424_MISC_CTRL3, TAS6424_CLEAR_FAULT, TAS6424_CLEAR_FAULT); if (ret < 0) |