diff options
| author | Ram Chandra Jangir <rjangir@codeaurora.org> | 2017-07-14 16:14:11 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-08-14 15:00:59 +0200 |
| commit | 83cf5faeba37fede8a6274d07f646d1cd1b25d35 (patch) | |
| tree | 68b623e08b6c518fbabf90ceff95beb7bcaa1d92 /drivers/pinctrl/qcom/pinctrl-msm.c | |
| parent | 77a6595910df74d0554d7f16fe026ab0eb0b7a58 (diff) | |
pinctrl: msm: add support to configure ipq40xx GPIO_PULL bits
GPIO_PULL bits configurations in TLMM_GPIO_CFG register
differs for IPQ40xx from rest of the other qcom SoCs.
As it does not support the keeper state and therefore can't
support bias-bus-hold property.
This patch adds a pull_no_keeper setting which configures the
msm_gpio_pull bits for ipq40xx. This is required to fix the
proper configurations of gpio-pull bits for nand pins mux.
IPQ40xx SoC:
2'b10: Internal pull up enable.
2'b11: Unsupport
For other SoC's:
2'b10: Keeper
2'b11: Pull-Up
Note: Due to pull_no_keeper length, all kerneldoc entries
in the msm_pinctrl_soc_data struct had to be realigned.
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Ram Chandra Jangir <rjangir@codeaurora.org>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/qcom/pinctrl-msm.c')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index 273badd92561..e5e27d79f5ef 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -202,10 +202,11 @@ static int msm_config_reg(struct msm_pinctrl *pctrl, return 0; } -#define MSM_NO_PULL 0 -#define MSM_PULL_DOWN 1 -#define MSM_KEEPER 2 -#define MSM_PULL_UP 3 +#define MSM_NO_PULL 0 +#define MSM_PULL_DOWN 1 +#define MSM_KEEPER 2 +#define MSM_PULL_UP_NO_KEEPER 2 +#define MSM_PULL_UP 3 static unsigned msm_regval_to_drive(u32 val) { @@ -243,10 +244,16 @@ static int msm_config_group_get(struct pinctrl_dev *pctldev, arg = arg == MSM_PULL_DOWN; break; case PIN_CONFIG_BIAS_BUS_HOLD: + if (pctrl->soc->pull_no_keeper) + return -ENOTSUPP; + arg = arg == MSM_KEEPER; break; case PIN_CONFIG_BIAS_PULL_UP: - arg = arg == MSM_PULL_UP; + if (pctrl->soc->pull_no_keeper) + arg = arg == MSM_PULL_UP_NO_KEEPER; + else + arg = arg == MSM_PULL_UP; break; case PIN_CONFIG_DRIVE_STRENGTH: arg = msm_regval_to_drive(arg); @@ -309,10 +316,16 @@ static int msm_config_group_set(struct pinctrl_dev *pctldev, arg = MSM_PULL_DOWN; break; case PIN_CONFIG_BIAS_BUS_HOLD: + if (pctrl->soc->pull_no_keeper) + return -ENOTSUPP; + arg = MSM_KEEPER; break; case PIN_CONFIG_BIAS_PULL_UP: - arg = MSM_PULL_UP; + if (pctrl->soc->pull_no_keeper) + arg = MSM_PULL_UP_NO_KEEPER; + else + arg = MSM_PULL_UP; break; case PIN_CONFIG_DRIVE_STRENGTH: /* Check for invalid values */ |