From: Ram Chandra Jangir <rjangir@xxxxxxxxxxxxxx>
GPIO_PULL bits configurations in TLMM_GPIO_CFG register
differs for IPQ40xx from rest of the other qcom SoC's.
This change add support to configure the msm_gpio_pull
bits for ipq40xx, It 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
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Ram Chandra Jangir <rjangir@xxxxxxxxxxxxxx>
Signed-off-by: Christian Lamparter <chunkeey@xxxxxxxxxxxxxx>
---
drivers/pinctrl/qcom/pinctrl-ipq4019.c | 1 +
drivers/pinctrl/qcom/pinctrl-msm.c | 25 +++++++++++++++++++------
drivers/pinctrl/qcom/pinctrl-msm.h | 1 +
3 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/drivers/pinctrl/qcom/pinctrl-ipq4019.c b/drivers/pinctrl/qcom/pinctrl-ipq4019.c
index ce60df5b05fb..eb01c1309d3a 100644
--- a/drivers/pinctrl/qcom/pinctrl-ipq4019.c
+++ b/drivers/pinctrl/qcom/pinctrl-ipq4019.c
@@ -738,6 +738,7 @@ static const struct msm_pinctrl_soc_data ipq4019_pinctrl = {
.groups = ipq4019_groups,
.ngroups = ARRAY_SIZE(ipq4019_groups),
.ngpios = 100,
+ .pull_no_keeper = true,
};
static int ipq4019_pinctrl_probe(struct platform_device *pdev)
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 */
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.h b/drivers/pinctrl/qcom/pinctrl-msm.h
index 54fdd04ce9d5..71e97db5ba18 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.h
+++ b/drivers/pinctrl/qcom/pinctrl-msm.h
@@ -115,6 +115,7 @@ struct msm_pinctrl_soc_data {
const struct msm_pingroup *groups;
unsigned ngroups;
unsigned ngpios;
+ bool pull_no_keeper;
};
int msm_pinctrl_probe(struct platform_device *pdev,
--
2.13.2
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