pinctrl: pinctrl_stm32: Add slew rate support for stm32_pinctrl_get_pin_muxing()
For debug purpose, it should be useful to indicate the slew rate for
each pins.
Add ospeed register information for pins which are configured in
either alternate function or gpio output.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/drivers/pinctrl/pinctrl_stm32.c b/drivers/pinctrl/pinctrl_stm32.c
index b755fa4..b06da50 100644
--- a/drivers/pinctrl/pinctrl_stm32.c
+++ b/drivers/pinctrl/pinctrl_stm32.c
@@ -61,6 +61,13 @@
[STM32_GPIO_OTYPE_OD] = "open-drain",
};
+static const char * const pinmux_speed[] = {
+ [STM32_GPIO_SPEED_2M] = "Low speed",
+ [STM32_GPIO_SPEED_25M] = "Medium speed",
+ [STM32_GPIO_SPEED_50M] = "High speed",
+ [STM32_GPIO_SPEED_100M] = "Very-high speed",
+};
+
static int stm32_pinctrl_get_af(struct udevice *dev, unsigned int offset)
{
struct stm32_gpio_priv *priv = dev_get_priv(dev);
@@ -201,6 +208,7 @@
int af_num;
unsigned int gpio_idx;
u32 pupd, otype;
+ u8 speed;
/* look up for the bank which owns the requested pin */
gpio_dev = stm32_pinctrl_get_gpio_dev(dev, selector, &gpio_idx);
@@ -214,6 +222,7 @@
priv = dev_get_priv(gpio_dev);
pupd = (readl(&priv->regs->pupdr) >> (gpio_idx * 2)) & PUPD_MASK;
otype = (readl(&priv->regs->otyper) >> gpio_idx) & OTYPE_MSK;
+ speed = (readl(&priv->regs->ospeedr) >> gpio_idx * 2) & OSPEED_MASK;
switch (mode) {
case GPIOF_UNKNOWN:
@@ -222,13 +231,15 @@
break;
case GPIOF_FUNC:
af_num = stm32_pinctrl_get_af(gpio_dev, gpio_idx);
- snprintf(buf, size, "%s %d %s %s", pinmux_mode[mode], af_num,
- pinmux_otype[otype], pinmux_bias[pupd]);
+ snprintf(buf, size, "%s %d %s %s %s", pinmux_mode[mode], af_num,
+ pinmux_otype[otype], pinmux_bias[pupd],
+ pinmux_speed[speed]);
break;
case GPIOF_OUTPUT:
- snprintf(buf, size, "%s %s %s %s",
+ snprintf(buf, size, "%s %s %s %s %s",
pinmux_mode[mode], pinmux_otype[otype],
- pinmux_bias[pupd], label ? label : "");
+ pinmux_bias[pupd], label ? label : "",
+ pinmux_speed[speed]);
break;
case GPIOF_INPUT:
snprintf(buf, size, "%s %s %s", pinmux_mode[mode],