From 099f3e4adddc8fe9899fb879053887a95e9aed7d Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Tue, 14 Jul 2015 23:40:33 -0700 Subject: [PATCH] pinctrl: qcom: spmi-mpp: Add support for setting analog output level When the MPP is configured for analog output the output level is selected by the AOUT_CTL register, this patch makes it possible to control this. Signed-off-by: Bjorn Andersson Signed-off-by: Linus Walleij --- .../bindings/pinctrl/qcom,pmic-mpp.txt | 7 ++++++ drivers/pinctrl/qcom/pinctrl-spmi-mpp.c | 23 +++++++++++++++++++ 2 files changed, 30 insertions(+) diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt index d29fb96a57d3..0e4d4e62e220 100644 --- a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt +++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt @@ -127,6 +127,13 @@ to specify in a pin configuration subnode: Definition: Selects the power source for the specified pins. Valid power sources are defined in +- qcom,analog-level: + Usage: optional + Value type: + Definition: Selects the source for analog output. Valued values are + defined in + PMIC_MPP_AOUT_LVL_* + - qcom,analog-mode: Usage: optional Value type: diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c index 9dde023640ba..e52a72348a67 100644 --- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c +++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c @@ -61,6 +61,7 @@ #define PMIC_MPP_REG_DIG_PULL_CTL 0x42 #define PMIC_MPP_REG_DIG_IN_CTL 0x43 #define PMIC_MPP_REG_EN_CTL 0x46 +#define PMIC_MPP_REG_AOUT_CTL 0x48 #define PMIC_MPP_REG_AIN_CTL 0x4a #define PMIC_MPP_REG_SINK_CTL 0x4c @@ -100,6 +101,7 @@ #define PMIC_MPP_CONF_AMUX_ROUTE (PIN_CONFIG_END + 1) #define PMIC_MPP_CONF_ANALOG_MODE (PIN_CONFIG_END + 2) #define PMIC_MPP_CONF_SINK_MODE (PIN_CONFIG_END + 3) +#define PMIC_MPP_CONF_ANALOG_LEVEL (PIN_CONFIG_END + 4) /** * struct pmic_mpp_pad - keep current MPP settings @@ -115,6 +117,7 @@ * @num_sources: Number of power-sources supported by this MPP. * @power_source: Current power-source used. * @amux_input: Set the source for analog input. + * @aout_level: Analog output level * @pullup: Pullup resistor value. Valid in Bidirectional mode only. * @function: See pmic_mpp_functions[]. * @drive_strength: Amount of current in sink mode @@ -131,6 +134,7 @@ struct pmic_mpp_pad { unsigned int num_sources; unsigned int power_source; unsigned int amux_input; + unsigned int aout_level; unsigned int pullup; unsigned int function; unsigned int drive_strength; @@ -145,6 +149,7 @@ struct pmic_mpp_state { static const struct pinconf_generic_params pmic_mpp_bindings[] = { {"qcom,amux-route", PMIC_MPP_CONF_AMUX_ROUTE, 0}, + {"qcom,analog-level", PMIC_MPP_CONF_ANALOG_LEVEL, 0}, {"qcom,analog-mode", PMIC_MPP_CONF_ANALOG_MODE, 0}, {"qcom,sink-mode", PMIC_MPP_CONF_SINK_MODE, 0}, }; @@ -152,6 +157,7 @@ static const struct pinconf_generic_params pmic_mpp_bindings[] = { #ifdef CONFIG_DEBUG_FS static const struct pin_config_item pmic_conf_items[] = { PCONFDUMP(PMIC_MPP_CONF_AMUX_ROUTE, "analog mux", NULL, true), + PCONFDUMP(PMIC_MPP_CONF_ANALOG_LEVEL, "analog level", NULL, true), PCONFDUMP(PMIC_MPP_CONF_ANALOG_MODE, "analog output", NULL, false), PCONFDUMP(PMIC_MPP_CONF_SINK_MODE, "sink mode", NULL, false), }; @@ -358,6 +364,9 @@ static int pmic_mpp_config_get(struct pinctrl_dev *pctldev, case PIN_CONFIG_DRIVE_STRENGTH: arg = pad->drive_strength; break; + case PMIC_MPP_CONF_ANALOG_LEVEL: + arg = pad->aout_level; + break; case PMIC_MPP_CONF_ANALOG_MODE: arg = pad->analog_mode; break; @@ -433,6 +442,9 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin, return -EINVAL; pad->amux_input = arg; break; + case PMIC_MPP_CONF_ANALOG_LEVEL: + pad->aout_level = arg; + break; case PMIC_MPP_CONF_ANALOG_MODE: pad->analog_mode = !!arg; break; @@ -462,6 +474,10 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin, if (ret < 0) return ret; + ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_AOUT_CTL, pad->aout_level); + if (ret < 0) + return ret; + ret = pmic_mpp_write_mode_ctl(state, pad); if (ret < 0) return ret; @@ -507,6 +523,7 @@ static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev, seq_printf(s, " %-7s", modes[pad->analog_mode ? 1 : (pad->sink_mode ? 2 : 0)]); seq_printf(s, " %-7s", pmic_mpp_functions[pad->function]); seq_printf(s, " vin-%d", pad->power_source); + seq_printf(s, " %d", pad->aout_level); seq_printf(s, " %-8s", biases[pad->pullup]); seq_printf(s, " %-4s", pad->out_value ? "high" : "low"); } @@ -748,6 +765,12 @@ static int pmic_mpp_populate(struct pmic_mpp_state *state, pad->drive_strength = val; + val = pmic_mpp_read(state, pad, PMIC_MPP_REG_AOUT_CTL); + if (val < 0) + return val; + + pad->aout_level = val; + val = pmic_mpp_read(state, pad, PMIC_MPP_REG_EN_CTL); if (val < 0) return val; -- 2.20.1