From: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Add support for the new i2c_pull property introduced for SM8550 setting
a I2C specific pull mode on I2C able pins.
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
drivers/pinctrl/qcom/pinctrl-msm.c | 20 ++++++++++++++++++++
drivers/pinctrl/qcom/pinctrl-msm.h | 1 +
2 files changed, 21 insertions(+)
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index 8fbb953c4bbe..f92082c1c805 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -83,6 +83,12 @@ struct msm_pinctrl {
u32 phys_base[MAX_NR_TILES];
};
+#define PIN_CONFIG_QCOM_I2C_PULL (PIN_CONFIG_END + 1)
+
+static const struct pinconf_generic_params msm_pinconf_custom_bindings[] = {
+ {"qcom,i2c-pull", PIN_CONFIG_END + 1, 0},
+};
+
#define MSM_ACCESSOR(name) \
static u32 msm_readl_##name(struct msm_pinctrl *pctrl, \
const struct msm_pingroup *g) \
@@ -324,6 +330,12 @@ static int msm_config_reg(struct msm_pinctrl *pctrl,
*bit = g->oe_bit;
*mask = 1;
break;
+ case PIN_CONFIG_QCOM_I2C_PULL:
+ if (g->i2c_pull_bit == 0)
+ return -EOPNOTSUPP;
+ *bit = g->i2c_pull_bit;
+ *mask = 1;
+ break;
default:
return -ENOTSUPP;
}
@@ -415,6 +427,9 @@ static int msm_config_group_get(struct pinctrl_dev *pctldev,
return -EINVAL;
arg = 1;
break;
+ case PIN_CONFIG_QCOM_I2C_PULL:
+ arg = 1;
+ break;
default:
return -ENOTSUPP;
}
@@ -498,6 +513,9 @@ static int msm_config_group_set(struct pinctrl_dev *pctldev,
/* disable output */
arg = 0;
break;
+ case PIN_CONFIG_QCOM_I2C_PULL:
+ arg = 1;
+ break;
default:
dev_err(pctrl->dev, "Unsupported config parameter: %x\n",
param);
@@ -1495,6 +1513,8 @@ int msm_pinctrl_probe(struct platform_device *pdev,
pctrl->desc.name = dev_name(&pdev->dev);
pctrl->desc.pins = pctrl->soc->pins;
pctrl->desc.npins = pctrl->soc->npins;
+ pctrl->desc.custom_params = msm_pinconf_custom_bindings;
+ pctrl->desc.num_custom_params = ARRAY_SIZE(msm_pinconf_custom_bindings);
pctrl->pctrl = devm_pinctrl_register(&pdev->dev, &pctrl->desc, pctrl);
if (IS_ERR(pctrl->pctrl)) {
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.h b/drivers/pinctrl/qcom/pinctrl-msm.h
index 05a1209bf9ae..985eceda2517 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.h
+++ b/drivers/pinctrl/qcom/pinctrl-msm.h
@@ -80,6 +80,7 @@ struct msm_pingroup {
unsigned pull_bit:5;
unsigned drv_bit:5;
+ unsigned i2c_pull_bit:5;
unsigned od_bit:5;
unsigned egpio_enable:5;
--
2.34.1
