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path: root/drivers/gpio/at91_gpio.c
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Diffstat (limited to 'drivers/gpio/at91_gpio.c')
-rw-r--r--drivers/gpio/at91_gpio.c142
1 files changed, 97 insertions, 45 deletions
diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
index 8e52e3dad0..2f9e44b620 100644
--- a/drivers/gpio/at91_gpio.c
+++ b/drivers/gpio/at91_gpio.c
@@ -59,11 +59,6 @@ int at91_set_pio_pullup(unsigned port, unsigned pin, int use_pullup)
{
struct at91_port *at91_port = at91_pio_get_port(port);
-#if defined(CPU_HAS_PIO3)
- if (use_pullup)
- at91_set_pio_pulldown(port, pin, 0);
-#endif
-
if (at91_port && (pin < GPIO_PER_BANK))
at91_set_port_pullup(at91_port, pin, use_pullup);
@@ -100,14 +95,7 @@ int at91_set_a_periph(unsigned port, unsigned pin, int use_pullup)
mask = 1 << pin;
writel(mask, &at91_port->idr);
at91_set_pio_pullup(port, pin, use_pullup);
-#if defined(CPU_HAS_PIO3)
- writel(readl(&at91_port->abcdsr1) & ~mask,
- &at91_port->abcdsr1);
- writel(readl(&at91_port->abcdsr2) & ~mask,
- &at91_port->abcdsr2);
-#else
- writel(mask, &at91_port->asr);
-#endif
+ writel(mask, &at91_port->mux.pio2.asr);
writel(mask, &at91_port->pdr);
}
@@ -126,25 +114,62 @@ int at91_set_b_periph(unsigned port, unsigned pin, int use_pullup)
mask = 1 << pin;
writel(mask, &at91_port->idr);
at91_set_pio_pullup(port, pin, use_pullup);
-#if defined(CPU_HAS_PIO3)
- writel(readl(&at91_port->abcdsr1) | mask,
- &at91_port->abcdsr1);
- writel(readl(&at91_port->abcdsr2) & ~mask,
- &at91_port->abcdsr2);
-#else
- writel(mask, &at91_port->bsr);
-#endif
+ writel(mask, &at91_port->mux.pio2.bsr);
+ writel(mask, &at91_port->pdr);
+ }
+
+ return 0;
+}
+
+/*
+ * mux the pin to the "A" internal peripheral role.
+ */
+int at91_pio3_set_a_periph(unsigned port, unsigned pin, int use_pullup)
+{
+ struct at91_port *at91_port = at91_pio_get_port(port);
+ u32 mask;
+
+ if (at91_port && (pin < GPIO_PER_BANK)) {
+ mask = 1 << pin;
+ writel(mask, &at91_port->idr);
+ at91_set_pio_pullup(port, pin, use_pullup);
+ writel(readl(&at91_port->mux.pio3.abcdsr1) & ~mask,
+ &at91_port->mux.pio3.abcdsr1);
+ writel(readl(&at91_port->mux.pio3.abcdsr2) & ~mask,
+ &at91_port->mux.pio3.abcdsr2);
+
writel(mask, &at91_port->pdr);
}
return 0;
}
-#if defined(CPU_HAS_PIO3)
+/*
+ * mux the pin to the "B" internal peripheral role.
+ */
+int at91_pio3_set_b_periph(unsigned port, unsigned pin, int use_pullup)
+{
+ struct at91_port *at91_port = at91_pio_get_port(port);
+ u32 mask;
+
+ if (at91_port && (pin < GPIO_PER_BANK)) {
+ mask = 1 << pin;
+ writel(mask, &at91_port->idr);
+ at91_set_pio_pullup(port, pin, use_pullup);
+ writel(readl(&at91_port->mux.pio3.abcdsr1) | mask,
+ &at91_port->mux.pio3.abcdsr1);
+ writel(readl(&at91_port->mux.pio3.abcdsr2) & ~mask,
+ &at91_port->mux.pio3.abcdsr2);
+
+ writel(mask, &at91_port->pdr);
+ }
+
+ return 0;
+}
/*
* mux the pin to the "C" internal peripheral role.
*/
-int at91_set_c_periph(unsigned port, unsigned pin, int use_pullup)
+int at91_pio3_set_c_periph(unsigned port, unsigned pin, int use_pullup)
{
struct at91_port *at91_port = at91_pio_get_port(port);
u32 mask;
@@ -153,10 +178,10 @@ int at91_set_c_periph(unsigned port, unsigned pin, int use_pullup)
mask = 1 << pin;
writel(mask, &at91_port->idr);
at91_set_pio_pullup(port, pin, use_pullup);
- writel(readl(&at91_port->abcdsr1) & ~mask,
- &at91_port->abcdsr1);
- writel(readl(&at91_port->abcdsr2) | mask,
- &at91_port->abcdsr2);
+ writel(readl(&at91_port->mux.pio3.abcdsr1) & ~mask,
+ &at91_port->mux.pio3.abcdsr1);
+ writel(readl(&at91_port->mux.pio3.abcdsr2) | mask,
+ &at91_port->mux.pio3.abcdsr2);
writel(mask, &at91_port->pdr);
}
@@ -166,7 +191,7 @@ int at91_set_c_periph(unsigned port, unsigned pin, int use_pullup)
/*
* mux the pin to the "D" internal peripheral role.
*/
-int at91_set_d_periph(unsigned port, unsigned pin, int use_pullup)
+int at91_pio3_set_d_periph(unsigned port, unsigned pin, int use_pullup)
{
struct at91_port *at91_port = at91_pio_get_port(port);
u32 mask;
@@ -175,16 +200,15 @@ int at91_set_d_periph(unsigned port, unsigned pin, int use_pullup)
mask = 1 << pin;
writel(mask, &at91_port->idr);
at91_set_pio_pullup(port, pin, use_pullup);
- writel(readl(&at91_port->abcdsr1) | mask,
- &at91_port->abcdsr1);
- writel(readl(&at91_port->abcdsr2) | mask,
- &at91_port->abcdsr2);
+ writel(readl(&at91_port->mux.pio3.abcdsr1) | mask,
+ &at91_port->mux.pio3.abcdsr1);
+ writel(readl(&at91_port->mux.pio3.abcdsr2) | mask,
+ &at91_port->mux.pio3.abcdsr2);
writel(mask, &at91_port->pdr);
}
return 0;
}
-#endif
#ifdef CONFIG_DM_GPIO
static bool at91_get_port_output(struct at91_port *at91_port, int offset)
@@ -263,10 +287,27 @@ int at91_set_pio_deglitch(unsigned port, unsigned pin, int is_on)
if (at91_port && (pin < GPIO_PER_BANK)) {
mask = 1 << pin;
+ if (is_on)
+ writel(mask, &at91_port->ifer);
+ else
+ writel(mask, &at91_port->ifdr);
+ }
+
+ return 0;
+}
+
+/*
+ * enable/disable the glitch filter. mostly used with IRQ handling.
+ */
+int at91_pio3_set_pio_deglitch(unsigned port, unsigned pin, int is_on)
+{
+ struct at91_port *at91_port = at91_pio_get_port(port);
+ u32 mask;
+
+ if (at91_port && (pin < GPIO_PER_BANK)) {
+ mask = 1 << pin;
if (is_on) {
-#if defined(CPU_HAS_PIO3)
- writel(mask, &at91_port->ifscdr);
-#endif
+ writel(mask, &at91_port->mux.pio3.ifscdr);
writel(mask, &at91_port->ifer);
} else {
writel(mask, &at91_port->ifdr);
@@ -276,11 +317,10 @@ int at91_set_pio_deglitch(unsigned port, unsigned pin, int is_on)
return 0;
}
-#if defined(CPU_HAS_PIO3)
/*
* enable/disable the debounce filter.
*/
-int at91_set_pio_debounce(unsigned port, unsigned pin, int is_on, int div)
+int at91_pio3_set_pio_debounce(unsigned port, unsigned pin, int is_on, int div)
{
struct at91_port *at91_port = at91_pio_get_port(port);
u32 mask;
@@ -288,8 +328,8 @@ int at91_set_pio_debounce(unsigned port, unsigned pin, int is_on, int div)
if (at91_port && (pin < GPIO_PER_BANK)) {
mask = 1 << pin;
if (is_on) {
- writel(mask, &at91_port->ifscer);
- writel(div & PIO_SCDR_DIV, &at91_port->scdr);
+ writel(mask, &at91_port->mux.pio3.ifscer);
+ writel(div & PIO_SCDR_DIV, &at91_port->mux.pio3.scdr);
writel(mask, &at91_port->ifer);
} else {
writel(mask, &at91_port->ifdr);
@@ -303,7 +343,7 @@ int at91_set_pio_debounce(unsigned port, unsigned pin, int is_on, int div)
* enable/disable the pull-down.
* If pull-up already enabled while calling the function, we disable it.
*/
-int at91_set_pio_pulldown(unsigned port, unsigned pin, int is_on)
+int at91_pio3_set_pio_pulldown(unsigned port, unsigned pin, int is_on)
{
struct at91_port *at91_port = at91_pio_get_port(port);
u32 mask;
@@ -312,18 +352,31 @@ int at91_set_pio_pulldown(unsigned port, unsigned pin, int is_on)
mask = 1 << pin;
if (is_on) {
at91_set_pio_pullup(port, pin, 0);
- writel(mask, &at91_port->ppder);
+ writel(mask, &at91_port->mux.pio3.ppder);
} else
- writel(mask, &at91_port->ppddr);
+ writel(mask, &at91_port->mux.pio3.ppddr);
}
return 0;
}
+int at91_pio3_set_pio_pullup(unsigned port, unsigned pin, int use_pullup)
+{
+ struct at91_port *at91_port = at91_pio_get_port(port);
+
+ if (use_pullup)
+ at91_pio3_set_pio_pulldown(port, pin, 0);
+
+ if (at91_port && (pin < GPIO_PER_BANK))
+ at91_set_port_pullup(at91_port, pin, use_pullup);
+
+ return 0;
+}
+
/*
* disable Schmitt trigger
*/
-int at91_set_pio_disable_schmitt_trig(unsigned port, unsigned pin)
+int at91_pio3_set_pio_disable_schmitt_trig(unsigned port, unsigned pin)
{
struct at91_port *at91_port = at91_pio_get_port(port);
u32 mask;
@@ -336,7 +389,6 @@ int at91_set_pio_disable_schmitt_trig(unsigned port, unsigned pin)
return 0;
}
-#endif
/*
* enable/disable the multi-driver. This is only valid for output and
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-06 12:36:12 +0300