diff options
Diffstat (limited to 'drivers/pinctrl/qcom')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-spmi-gpio.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c index 6b21832d45e6..73ce2b5cf9a3 100644 --- a/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c +++ b/drivers/pinctrl/qcom/pinctrl-spmi-gpio.c @@ -51,6 +51,7 @@ #define PMIC_GPIO_REG_DIG_VIN_CTL 0x41 #define PMIC_GPIO_REG_DIG_PULL_CTL 0x42 #define PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL 0x44 +#define PMIC_GPIO_REG_DIG_IN_CTL 0x43 #define PMIC_GPIO_REG_DIG_OUT_CTL 0x45 #define PMIC_GPIO_REG_EN_CTL 0x46 #define PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL 0x4A @@ -84,6 +85,11 @@ #define PMIC_GPIO_LV_MV_OUTPUT_INVERT_SHIFT 7 #define PMIC_GPIO_LV_MV_OUTPUT_SOURCE_SEL_MASK 0xF +/* PMIC_GPIO_REG_DIG_IN_CTL */ +#define PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN 0x80 +#define PMIC_GPIO_LV_MV_DIG_IN_DTEST_SEL_MASK 0x7 +#define PMIC_GPIO_DIG_IN_DTEST_SEL_MASK 0xf + /* PMIC_GPIO_REG_DIG_OUT_CTL */ #define PMIC_GPIO_REG_OUT_STRENGTH_SHIFT 0 #define PMIC_GPIO_REG_OUT_STRENGTH_MASK 0x3 @@ -111,6 +117,7 @@ #define PMIC_GPIO_CONF_STRENGTH (PIN_CONFIG_END + 2) #define PMIC_GPIO_CONF_ATEST (PIN_CONFIG_END + 3) #define PMIC_GPIO_CONF_ANALOG_PASS (PIN_CONFIG_END + 4) +#define PMIC_GPIO_CONF_DTEST_BUFFER (PIN_CONFIG_END + 5) /* The index of each function in pmic_gpio_functions[] array */ enum pmic_gpio_func_index { @@ -145,6 +152,7 @@ enum pmic_gpio_func_index { * @strength: No, Low, Medium, High * @function: See pmic_gpio_functions[] * @atest: the ATEST selection for GPIO analog-pass-through mode + * @dtest_buffer: the DTEST buffer selection for digital input mode. */ struct pmic_gpio_pad { u16 base; @@ -163,6 +171,7 @@ struct pmic_gpio_pad { unsigned int strength; unsigned int function; unsigned int atest; + unsigned int dtest_buffer; }; struct pmic_gpio_state { @@ -177,6 +186,7 @@ static const struct pinconf_generic_params pmic_gpio_bindings[] = { {"qcom,drive-strength", PMIC_GPIO_CONF_STRENGTH, 0}, {"qcom,atest", PMIC_GPIO_CONF_ATEST, 0}, {"qcom,analog-pass", PMIC_GPIO_CONF_ANALOG_PASS, 0}, + {"qcom,dtest-buffer", PMIC_GPIO_CONF_DTEST_BUFFER, 0}, }; #ifdef CONFIG_DEBUG_FS @@ -185,6 +195,7 @@ static const struct pin_config_item pmic_conf_items[ARRAY_SIZE(pmic_gpio_binding PCONFDUMP(PMIC_GPIO_CONF_STRENGTH, "drive-strength", NULL, true), PCONFDUMP(PMIC_GPIO_CONF_ATEST, "atest", NULL, true), PCONFDUMP(PMIC_GPIO_CONF_ANALOG_PASS, "analog-pass", NULL, true), + PCONFDUMP(PMIC_GPIO_CONF_DTEST_BUFFER, "dtest-buffer", NULL, true), }; #endif @@ -420,6 +431,9 @@ static int pmic_gpio_config_get(struct pinctrl_dev *pctldev, case PMIC_GPIO_CONF_ANALOG_PASS: arg = pad->analog_pass; break; + case PMIC_GPIO_CONF_DTEST_BUFFER: + arg = pad->dtest_buffer; + break; default: return -EINVAL; } @@ -504,6 +518,11 @@ static int pmic_gpio_config_set(struct pinctrl_dev *pctldev, unsigned int pin, return -EINVAL; pad->analog_pass = true; break; + case PMIC_GPIO_CONF_DTEST_BUFFER: + if (arg > 4) + return -EINVAL; + pad->dtest_buffer = arg; + break; default: return -EINVAL; } @@ -528,6 +547,20 @@ static int pmic_gpio_config_set(struct pinctrl_dev *pctldev, unsigned int pin, if (ret < 0) return ret; + if (pad->dtest_buffer == 0) { + val = 0; + } else { + if (pad->lv_mv_type) { + val = pad->dtest_buffer - 1; + val |= PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN; + } else { + val = BIT(pad->dtest_buffer - 1); + } + } + ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_DIG_IN_CTL, val); + if (ret < 0) + return ret; + if (pad->analog_pass) val = PMIC_GPIO_MODE_ANALOG_PASS_THRU; else if (pad->output_enabled && pad->input_enabled) @@ -627,6 +660,7 @@ static void pmic_gpio_config_dbg_show(struct pinctrl_dev *pctldev, seq_printf(s, " %-4s", pad->out_value ? "high" : "low"); seq_printf(s, " %-7s", strengths[pad->strength]); seq_printf(s, " atest-%d", pad->atest); + seq_printf(s, " dtest-%d", pad->dtest_buffer); } } @@ -845,6 +879,22 @@ static int pmic_gpio_populate(struct pmic_gpio_state *state, pad->pullup = val >> PMIC_GPIO_REG_PULL_SHIFT; pad->pullup &= PMIC_GPIO_REG_PULL_MASK; + val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_DIG_IN_CTL); + if (val < 0) + return val; + + if (pad->lv_mv_type && (val & PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN)) + pad->dtest_buffer = + (val & PMIC_GPIO_LV_MV_DIG_IN_DTEST_SEL_MASK) + 1; + else if (!pad->lv_mv_type) + pad->dtest_buffer = ffs(val); + else + pad->dtest_buffer = 0; + + val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_DIG_OUT_CTL); + if (val < 0) + return val; + pad->strength = val >> PMIC_GPIO_REG_OUT_STRENGTH_SHIFT; pad->strength &= PMIC_GPIO_REG_OUT_STRENGTH_MASK; |