Add information on pin configuration used for pinmux command: - bias configuration for output (disable, pull up, pull down) - otype for input (open drain or push pull)
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
Changes in v2: None
drivers/pinctrl/pinctrl_stm32.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-)
diff --git a/drivers/pinctrl/pinctrl_stm32.c b/drivers/pinctrl/pinctrl_stm32.c index fc241fdcde..71fa29a389 100644 --- a/drivers/pinctrl/pinctrl_stm32.c +++ b/drivers/pinctrl/pinctrl_stm32.c @@ -45,6 +45,17 @@ static const char * const pinmux_mode[PINMUX_MODE_COUNT] = { "alt function", };
+static const char * const pinmux_output[] = { + [STM32_GPIO_PUPD_NO] = "bias-disable", + [STM32_GPIO_PUPD_UP] = "bias-pull-up", + [STM32_GPIO_PUPD_DOWN] = "bias-pull-down", +}; + +static const char * const pinmux_input[] = { + [STM32_GPIO_OTYPE_PP] = "drive-push-pull", + [STM32_GPIO_OTYPE_OD] = "drive-open-drain", +}; + static int stm32_pinctrl_get_af(struct udevice *dev, unsigned int offset) { struct stm32_gpio_priv *priv = dev_get_priv(dev); @@ -182,10 +193,12 @@ static int stm32_pinctrl_get_pin_muxing(struct udevice *dev, int size) { struct udevice *gpio_dev; + struct stm32_gpio_priv *priv; const char *label; int mode; int af_num; unsigned int gpio_idx; + u32 pupd, otype;
/* look up for the bank which owns the requested pin */ gpio_dev = stm32_pinctrl_get_gpio_dev(dev, selector, &gpio_idx); @@ -194,9 +207,9 @@ static int stm32_pinctrl_get_pin_muxing(struct udevice *dev, return -ENODEV;
mode = gpio_get_raw_function(gpio_dev, gpio_idx, &label); - dev_dbg(dev, "selector = %d gpio_idx = %d mode = %d\n", selector, gpio_idx, mode); + priv = dev_get_priv(gpio_dev);
switch (mode) { @@ -211,9 +224,17 @@ static int stm32_pinctrl_get_pin_muxing(struct udevice *dev, snprintf(buf, size, "%s %d", pinmux_mode[mode], af_num); break; case GPIOF_OUTPUT: + pupd = (readl(&priv->regs->pupdr) >> (gpio_idx * 2)) & + PUPD_MASK; + snprintf(buf, size, "%s %s %s", + pinmux_mode[mode], pinmux_output[pupd], + label ? label : ""); + break; case GPIOF_INPUT: - snprintf(buf, size, "%s %s", - pinmux_mode[mode], label ? label : ""); + otype = (readl(&priv->regs->otyper) >> gpio_idx) & OTYPE_MSK; + snprintf(buf, size, "%s %s %s", + pinmux_mode[mode], pinmux_input[otype], + label ? label : ""); break; }