atmel_spi: Driver for the Atmel SPI controller

[karo-tx-uboot.git] / cpu / at32ap / at32ap700x / gpio.c

diff --git a/cpu/at32ap/at32ap700x/gpio.c b/cpu/at32ap/at32ap700x/gpio.c
index 859124a91f6b8b4e1c7c80094bb3245750beaa3f..3da35d4fe231c4c882c0551113a9b2e8dbcd3d0d 100644 (file)
--- a/cpu/at32ap/at32ap700x/gpio.c
+++ b/cpu/at32ap/at32ap700x/gpio.c
@@ -21,8 +21,11 @@
  */
 #include <common.h>
 
+#include <asm/io.h>
+
 #include <asm/arch/chip-features.h>
 #include <asm/arch/gpio.h>
+#include <asm/arch/memory-map.h>
 
 /*
  * Lots of small functions here. We depend on --gc-sections getting
@@ -142,3 +145,43 @@ void gpio_enable_mmci(void)
        gpio_select_periph_A(GPIO_PIN_PA15, 0); /* DATA3 */
 }
 #endif
+
+#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);
+}
+
+void gpio_enable_spi1(unsigned long cs_mask)
+{
+       gpio_select_periph_B(GPIO_PIN_PA0,  0); /* MISO */
+       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 */
+}
+#endif