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authorStephen Boyd <sboyd@codeaurora.org>2016-01-08 23:25:53 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-01-27 17:06:19 +0300
commitae6d54fd695d7e1bd7b0bdaf457074ae4b5ad7bb (patch)
treed538b53289c80cfdc63d86a84064daf57ddd789a /drivers/pinctrl/qcom
parent23c3960dfe6faea6fa8b8cb0bfedba2a03bda0c1 (diff)
downloadlinux-ae6d54fd695d7e1bd7b0bdaf457074ae4b5ad7bb.tar.xz
pinctrl: qcom: spmi-mpp: Skip pullup on ULT type MPPs
The ULT type of MPPs don't have a pullup. Skip configuring the pullup on these types of pins. Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/qcom')
-rw-r--r--drivers/pinctrl/qcom/pinctrl-spmi-mpp.c30
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
index 2f18323571a6..2a3e5490a483 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
@@ -117,6 +117,7 @@
* @output_enabled: Set to true if MPP output logic is enabled.
* @input_enabled: Set to true if MPP input buffer logic is enabled.
* @paired: Pin operates in paired mode
+ * @has_pullup: Pin has support to configure pullup
* @num_sources: Number of power-sources supported by this MPP.
* @power_source: Current power-source used.
* @amux_input: Set the source for analog input.
@@ -134,6 +135,7 @@ struct pmic_mpp_pad {
bool output_enabled;
bool input_enabled;
bool paired;
+ bool has_pullup;
unsigned int num_sources;
unsigned int power_source;
unsigned int amux_input;
@@ -477,11 +479,14 @@ static int pmic_mpp_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
if (ret < 0)
return ret;
- val = pad->pullup << PMIC_MPP_REG_PULL_SHIFT;
+ if (pad->has_pullup) {
+ val = pad->pullup << PMIC_MPP_REG_PULL_SHIFT;
- ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_DIG_PULL_CTL, val);
- if (ret < 0)
- return ret;
+ ret = pmic_mpp_write(state, pad, PMIC_MPP_REG_DIG_PULL_CTL,
+ val);
+ if (ret < 0)
+ return ret;
+ }
val = pad->amux_input & PMIC_MPP_REG_AIN_ROUTE_MASK;
@@ -534,7 +539,8 @@ static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev,
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]);
+ if (pad->has_pullup)
+ seq_printf(s, " %-8s", biases[pad->pullup]);
seq_printf(s, " %-4s", pad->out_value ? "high" : "low");
if (pad->dtest)
seq_printf(s, " dtest%d", pad->dtest);
@@ -748,12 +754,16 @@ static int pmic_mpp_populate(struct pmic_mpp_state *state,
pad->power_source = val >> PMIC_MPP_REG_VIN_SHIFT;
pad->power_source &= PMIC_MPP_REG_VIN_MASK;
- val = pmic_mpp_read(state, pad, PMIC_MPP_REG_DIG_PULL_CTL);
- if (val < 0)
- return val;
+ if (subtype != PMIC_MPP_SUBTYPE_ULT_4CH_NO_ANA_OUT &&
+ subtype != PMIC_MPP_SUBTYPE_ULT_4CH_NO_SINK) {
+ val = pmic_mpp_read(state, pad, PMIC_MPP_REG_DIG_PULL_CTL);
+ if (val < 0)
+ return val;
- pad->pullup = val >> PMIC_MPP_REG_PULL_SHIFT;
- pad->pullup &= PMIC_MPP_REG_PULL_MASK;
+ pad->pullup = val >> PMIC_MPP_REG_PULL_SHIFT;
+ pad->pullup &= PMIC_MPP_REG_PULL_MASK;
+ pad->has_pullup = true;
+ }
val = pmic_mpp_read(state, pad, PMIC_MPP_REG_AIN_CTL);
if (val < 0)