From: Alexandre Torgue <alexandre.tor...@st.com>
According to the following tab (coming from STMFX datasheet), updates
have to done in stmfx_pinconf_set function:
-"type" has to be set when "bias" is configured as "pull-up or pull-down"
-PIN_CONFIG_DRIVE_PUSH_PULL should only be used when gpio is configured as
output. There is so no need to check direction.
DIR | TYPE | PUPD | MFX GPIO configuration
----|------|------|---------------------------------------------------
1 | 1 | 1 | OUTPUT open drain with internal pull-up resistor
----|------|------|---------------------------------------------------
1 | 1 | 0 | OUTPUT open drain with internal pull-down resistor
----|------|------|---------------------------------------------------
1 | 0 | 0/1 | OUTPUT push pull no pull
----|------|------|---------------------------------------------------
0 | 1 | 1 | INPUT with internal pull-up resistor
----|------|------|---------------------------------------------------
0 | 1 | 0 | INPUT with internal pull-down resistor
----|------|------|---------------------------------------------------
0 | 0 | 1 | INPUT floating
----|------|------|---------------------------------------------------
0 | 0 | 0 | analog (GPIO not used, default setting)
Signed-off-by: Alexandre Torgue <alexandre.tor...@st.com>
Signed-off-by: Amelie Delaunay <amelie.delau...@st.com>
---
drivers/pinctrl/pinctrl-stmfx.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c
index d3332da..31b6e51 100644
--- a/drivers/pinctrl/pinctrl-stmfx.c
+++ b/drivers/pinctrl/pinctrl-stmfx.c
@@ -296,29 +296,29 @@ static int stmfx_pinconf_set(struct pinctrl_dev *pctldev,
unsigned int pin,
switch (param) {
case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
case PIN_CONFIG_BIAS_DISABLE:
+ case PIN_CONFIG_DRIVE_PUSH_PULL:
+ ret = stmfx_pinconf_set_type(pctl, pin, 0);
+ if (ret)
+ return ret;
+ break;
case PIN_CONFIG_BIAS_PULL_DOWN:
+ ret = stmfx_pinconf_set_type(pctl, pin, 1);
+ if (ret)
+ return ret;
ret = stmfx_pinconf_set_pupd(pctl, pin, 0);
if (ret)
return ret;
break;
case PIN_CONFIG_BIAS_PULL_UP:
- ret = stmfx_pinconf_set_pupd(pctl, pin, 1);
+ ret = stmfx_pinconf_set_type(pctl, pin, 1);
if (ret)
return ret;
- break;
- case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- if (!dir)
- ret = stmfx_pinconf_set_type(pctl, pin, 1);
- else
- ret = stmfx_pinconf_set_type(pctl, pin, 0);
+ ret = stmfx_pinconf_set_pupd(pctl, pin, 1);
if (ret)
return ret;
break;
- case PIN_CONFIG_DRIVE_PUSH_PULL:
- if (!dir)
- ret = stmfx_pinconf_set_type(pctl, pin, 0);
- else
- ret = stmfx_pinconf_set_type(pctl, pin, 1);
+ case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+ ret = stmfx_pinconf_set_type(pctl, pin, 1);
if (ret)
return ret;
break;
--
2.7.4
