From: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Date: Fri, 20 Jun 2008 10:44:28 +0000 (+0200)
Subject: avr32: Fix SPI portmux initialization
X-Git-Tag: v1.3.4-rc1~81^2~1^2~1
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5605ef6b5802921cbefe6a933a9dea3497396b5c;p=oweals%2Fu-boot.git

avr32: Fix SPI portmux initialization

Use the new GPIO manipulation functions to set up the chip select lines,
and make sure both busses use GPIO for chip select control.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
---

diff --git a/cpu/at32ap/at32ap700x/gpio.c b/cpu/at32ap/at32ap700x/gpio.c
index 3da35d4fe2..56ba2f90c6 100644
--- a/cpu/at32ap/at32ap700x/gpio.c
+++ b/cpu/at32ap/at32ap700x/gpio.c
@@ -149,24 +149,27 @@ void gpio_enable_mmci(void)
 #ifdef AT32AP700x_CHIP_HAS_SPI
 void gpio_enable_spi0(unsigned long cs_mask)
 {
-	u32 pa_mask = 0;
-
 	gpio_select_periph_A(GPIO_PIN_PA0,  0);	/* MISO	*/
 	gpio_select_periph_A(GPIO_PIN_PA1,  0);	/* MOSI	*/
 	gpio_select_periph_A(GPIO_PIN_PA2,  0);	/* SCK	*/
 
-	if (cs_mask & (1 << 0))
-		pa_mask |= 1 << 3;	/* NPCS0 */
-	if (cs_mask & (1 << 1))
-		pa_mask |= 1 << 4;	/* NPCS1 */
-	if (cs_mask & (1 << 2))
-		pa_mask |= 1 << 5;	/* NPCS2 */
-	if (cs_mask & (1 << 3))
-		pa_mask |= 1 << 20;	/* NPCS3 */
-
-	__raw_writel(pa_mask, PIOA_BASE + 0x00);
-	__raw_writel(pa_mask, PIOA_BASE + 0x30);
-	__raw_writel(pa_mask, PIOA_BASE + 0x10);
+	/* Set up NPCSx as GPIO outputs, initially high */
+	if (cs_mask & (1 << 0)) {
+		gpio_set_value(GPIO_PIN_PA3, 1);
+		gpio_select_pio(GPIO_PIN_PA3, GPIOF_OUTPUT);
+	}
+	if (cs_mask & (1 << 1)) {
+		gpio_set_value(GPIO_PIN_PA4, 1);
+		gpio_select_pio(GPIO_PIN_PA4, GPIOF_OUTPUT);
+	}
+	if (cs_mask & (1 << 2)) {
+		gpio_set_value(GPIO_PIN_PA5, 1);
+		gpio_select_pio(GPIO_PIN_PA5, GPIOF_OUTPUT);
+	}
+	if (cs_mask & (1 << 3)) {
+		gpio_set_value(GPIO_PIN_PA20, 1);
+		gpio_select_pio(GPIO_PIN_PA20, GPIOF_OUTPUT);
+	}
 }
 
 void gpio_enable_spi1(unsigned long cs_mask)
@@ -175,13 +178,22 @@ void gpio_enable_spi1(unsigned long cs_mask)
 	gpio_select_periph_B(GPIO_PIN_PB1,  0);	/* MOSI	*/
 	gpio_select_periph_B(GPIO_PIN_PB5,  0);	/* SCK	*/
 
-	if (cs_mask & (1 << 0))
-		gpio_select_periph_B(GPIO_PIN_PB2,  0);	/* NPCS0 */
-	if (cs_mask & (1 << 1))
-		gpio_select_periph_B(GPIO_PIN_PB3,  0);	/* NPCS1 */
-	if (cs_mask & (1 << 2))
-		gpio_select_periph_B(GPIO_PIN_PB4,  0);	/* NPCS2 */
-	if (cs_mask & (1 << 3))
-		gpio_select_periph_A(GPIO_PIN_PA27, 0);	/* NPCS3 */
+	/* Set up NPCSx as GPIO outputs, initially high */
+	if (cs_mask & (1 << 0)) {
+		gpio_set_value(GPIO_PIN_PB2, 1);
+		gpio_select_pio(GPIO_PIN_PB2, GPIOF_OUTPUT);
+	}
+	if (cs_mask & (1 << 1)) {
+		gpio_set_value(GPIO_PIN_PB3, 1);
+		gpio_select_pio(GPIO_PIN_PB3, GPIOF_OUTPUT);
+	}
+	if (cs_mask & (1 << 2)) {
+		gpio_set_value(GPIO_PIN_PB4, 1);
+		gpio_select_pio(GPIO_PIN_PB4, GPIOF_OUTPUT);
+	}
+	if (cs_mask & (1 << 3)) {
+		gpio_set_value(GPIO_PIN_PA27, 1);
+		gpio_select_pio(GPIO_PIN_PA27, GPIOF_OUTPUT);
+	}
 }
 #endif