gpio: at91_gpio: remove CPU_HAS_PIO3 macro

The intention of the removal is the preparation to introduce the
new AT91 PIO pinctrl driver.

Use the union to make the PIO3 and PIO2's registers be together
and make their offset aligned.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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