* [PATCH v2 1/3] gpio: at91: Implement GPIOF_FUNC in get_function()
@ 2024-11-13 10:10 Zixun LI
2024-11-19 15:44 ` Eugen Hristev
0 siblings, 1 reply; 2+ messages in thread
From: Zixun LI @ 2024-11-13 10:10 UTC (permalink / raw)
To: Eugen Hristev, Tom Rini, Heiko Schocher, Sean Anderson,
Peter Robinson
Cc: u-boot, Zixun LI
This patch adds support for determining whether a gpio pin is mapped as
peripheral function.
Signed-off-by: Zixun LI <admin@hifiphile.com>
---
Changes in v2:
- Rename function
---
drivers/gpio/at91_gpio.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
index 1409db5dc1..173315d45f 100644
--- a/drivers/gpio/at91_gpio.c
+++ b/drivers/gpio/at91_gpio.c
@@ -220,6 +220,15 @@ static bool at91_get_port_output(struct at91_port *at91_port, int offset)
val = readl(&at91_port->osr);
return val & mask;
}
+
+static bool at91_is_port_gpio(struct at91_port *at91_port, int offset)
+{
+ u32 mask, val;
+
+ mask = 1 << offset;
+ val = readl(&at91_port->psr);
+ return !!(val & mask);
+}
#endif
static void at91_set_port_input(struct at91_port *at91_port, int offset,
@@ -550,7 +559,9 @@ static int at91_gpio_get_function(struct udevice *dev, unsigned offset)
{
struct at91_port_priv *port = dev_get_priv(dev);
- /* GPIOF_FUNC is not implemented yet */
+ if (!at91_is_port_gpio(port->regs, offset))
+ return GPIOF_FUNC;
+
if (at91_get_port_output(port->regs, offset))
return GPIOF_OUTPUT;
else
--
2.46.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2 1/3] gpio: at91: Implement GPIOF_FUNC in get_function()
2024-11-13 10:10 [PATCH v2 1/3] gpio: at91: Implement GPIOF_FUNC in get_function() Zixun LI
@ 2024-11-19 15:44 ` Eugen Hristev
0 siblings, 0 replies; 2+ messages in thread
From: Eugen Hristev @ 2024-11-19 15:44 UTC (permalink / raw)
To: Zixun LI, Tom Rini, Heiko Schocher, Sean Anderson, Peter Robinson; +Cc: u-boot
Applied patches to u-boot-at91/next, thanks !
Eugen
On 11/13/24 12:10, Zixun LI wrote:
> This patch adds support for determining whether a gpio pin is mapped as
> peripheral function.
>
> Signed-off-by: Zixun LI <admin@hifiphile.com>
> ---
> Changes in v2:
> - Rename function
> ---
> drivers/gpio/at91_gpio.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
> index 1409db5dc1..173315d45f 100644
> --- a/drivers/gpio/at91_gpio.c
> +++ b/drivers/gpio/at91_gpio.c
> @@ -220,6 +220,15 @@ static bool at91_get_port_output(struct at91_port *at91_port, int offset)
> val = readl(&at91_port->osr);
> return val & mask;
> }
> +
> +static bool at91_is_port_gpio(struct at91_port *at91_port, int offset)
> +{
> + u32 mask, val;
> +
> + mask = 1 << offset;
> + val = readl(&at91_port->psr);
> + return !!(val & mask);
> +}
> #endif
>
> static void at91_set_port_input(struct at91_port *at91_port, int offset,
> @@ -550,7 +559,9 @@ static int at91_gpio_get_function(struct udevice *dev, unsigned offset)
> {
> struct at91_port_priv *port = dev_get_priv(dev);
>
> - /* GPIOF_FUNC is not implemented yet */
> + if (!at91_is_port_gpio(port->regs, offset))
> + return GPIOF_FUNC;
> +
> if (at91_get_port_output(port->regs, offset))
> return GPIOF_OUTPUT;
> else
> --
> 2.46.2
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2024-11-13 10:10 [PATCH v2 1/3] gpio: at91: Implement GPIOF_FUNC in get_function() Zixun LI
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