diff options
| author | Devesh Jhunjhunwala <deveshj@codeaurora.org> | 2016-08-31 14:16:45 -0700 |
|---|---|---|
| committer | Subbaraman Narayanamurthy <subbaram@codeaurora.org> | 2016-10-12 18:38:54 -0700 |
| commit | 889d937b11bc38131ea99fcb5561309553413eef (patch) | |
| tree | 9a3c302d0d31f8218ca7b173ed3437c7961eab2e /drivers/leds | |
| parent | 773f15cdab613a9cb921f3e1e49f96cadac75c14 (diff) | |
leds: qpnp-flash-v2: Add support for configuring hardware mitigation
Add support to program the ILED_GRT_THRESHOLD register, which
controls the led current threshold beyond which HW automatically
triggers preemptive mitigation.
Change-Id: I3ea14c8c76c4496eeeb11caf63c3ee62f031b157
Signed-off-by: Devesh Jhunjhunwala <deveshj@codeaurora.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-qpnp-flash-v2.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/leds/leds-qpnp-flash-v2.c b/drivers/leds/leds-qpnp-flash-v2.c index 0cae5d2e5263..164dac4c7c2f 100644 --- a/drivers/leds/leds-qpnp-flash-v2.c +++ b/drivers/leds/leds-qpnp-flash-v2.c @@ -48,6 +48,7 @@ #define FLASH_LED_REG_THERMAL_THRSH3(base) (base + 0x58) #define FLASH_LED_REG_VPH_DROOP_THRESHOLD(base) (base + 0x61) #define FLASH_LED_REG_VPH_DROOP_DEBOUNCE(base) (base + 0x62) +#define FLASH_LED_REG_ILED_GRT_THRSH(base) (base + 0x67) #define FLASH_LED_REG_MITIGATION_SEL(base) (base + 0x6E) #define FLASH_LED_REG_MITIGATION_SW(base) (base + 0x6F) #define FLASH_LED_REG_LMH_LEVEL(base) (base + 0x70) @@ -63,6 +64,7 @@ #define FLASH_LED_CURRENT_DERATE_EN_MASK GENMASK(2, 0) #define FLASH_LED_VPH_DROOP_DEBOUNCE_MASK GENMASK(1, 0) #define FLASH_LED_LMH_MITIGATION_SEL_MASK GENMASK(1, 0) +#define FLASH_LED_ILED_GRT_THRSH_MASK GENMASK(5, 0) #define FLASH_LED_LMH_LEVEL_MASK GENMASK(1, 0) #define FLASH_LED_VPH_DROOP_HYSTERESIS_MASK GENMASK(5, 4) #define FLASH_LED_VPH_DROOP_THRESHOLD_MASK GENMASK(2, 0) @@ -78,6 +80,7 @@ #define VPH_DROOP_HYST_MV_TO_VAL(val_mv) (val_mv / 25) #define VPH_DROOP_THRESH_MV_TO_VAL(val_mv) ((val_mv / 100) - 25) #define VPH_DROOP_THRESH_VAL_TO_UV(val) ((val + 25) * 100000) +#define MITIGATION_THRSH_MA_TO_VAL(val_ma) (val_ma / 100) #define FLASH_LED_ISC_WARMUP_DELAY_SHIFT 6 #define FLASH_LED_WARMUP_DELAY_DEFAULT 2 @@ -101,6 +104,8 @@ #define FLASH_LED_LMH_MITIGATION_DISABLE 0 #define FLASH_LED_LMH_MITIGATION_SEL_DEFAULT 2 #define FLASH_LED_LMH_MITIGATION_SEL_MAX 2 +#define FLASH_LED_MITIGATION_THRSH_DEFAULT 0xA +#define FLASH_LED_MITIGATION_THRSH_MAX 0x1F #define FLASH_LED_LMH_OCV_THRESH_DEFAULT_UV 3700000 #define FLASH_LED_LMH_RBATT_THRESH_DEFAULT_UOHM 400000 #define FLASH_LED_IRES_BASE 3 @@ -200,6 +205,7 @@ struct flash_led_platform_data { u8 vph_droop_debounce; u8 lmh_mitigation_sel; u8 lmh_level; + u8 iled_thrsh_val; u8 hw_strobe_option; bool hdrm_auto_mode_en; bool thermal_derate_en; @@ -358,6 +364,13 @@ static int qpnp_flash_led_init_settings(struct qpnp_flash_led *led) if (rc < 0) return rc; + rc = qpnp_flash_led_masked_write(led, + FLASH_LED_REG_ILED_GRT_THRSH(led->base), + FLASH_LED_ILED_GRT_THRSH_MASK, + led->pdata->iled_thrsh_val); + if (rc < 0) + return rc; + return 0; } @@ -1664,6 +1677,21 @@ static int qpnp_flash_led_parse_common_dt(struct qpnp_flash_led *led, return -EINVAL; } + led->pdata->iled_thrsh_val = FLASH_LED_MITIGATION_THRSH_DEFAULT; + rc = of_property_read_u32(node, "qcom,iled-thrsh-ma", &val); + if (!rc) { + led->pdata->iled_thrsh_val = MITIGATION_THRSH_MA_TO_VAL(val); + } else if (rc != -EINVAL) { + dev_err(&led->pdev->dev, "Unable to parse iled_thrsh_val, rc=%d\n", + rc); + return rc; + } + + if (led->pdata->iled_thrsh_val > FLASH_LED_MITIGATION_THRSH_MAX) { + dev_err(&led->pdev->dev, "Invalid iled_thrsh_val specified\n"); + return -EINVAL; + } + led->pdata->all_ramp_up_done_irq = of_irq_get_byname(node, "all-ramp-up-done-irq"); if (led->pdata->all_ramp_up_done_irq < 0) |