X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Farm%2Fmach-at91%2Fat91sam9261_devices.c;h=f7f02d15045d5c24ac99c0dba707a093c7a64821;hb=c6686ff9df086f9473663c2e61c1173c56788b2e;hp=8e781997716ae4981d4847fa19109462153d1047;hpb=9b6a51746ffe8d619f1097675d2dc5e303470024;p=linux-2.6-omap-h63xx.git

diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 8e781997716..f7f02d15045 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -13,7 +13,12 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 
+#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
+#include <linux/i2c-gpio.h>
+
+#include <linux/fb.h>
+#include <video/atmel_lcdc.h>
 
 #include <asm/arch/board.h>
 #include <asm/arch/gpio.h>
@@ -23,16 +28,13 @@
 
 #include "generic.h"
 
-#define SZ_512	0x00000200
-#define SZ_256	0x00000100
-#define SZ_16	0x00000010
 
 /* --------------------------------------------------------------------
  *  USB Host
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
-static u64 ohci_dmamask = 0xffffffffUL;
+static u64 ohci_dmamask = DMA_BIT_MASK(32);
 static struct at91_usbh_data usbh_data;
 
 static struct resource usbh_resources[] = {
@@ -53,7 +55,7 @@ static struct platform_device at91sam9261_usbh_device = {
 	.id		= -1,
 	.dev		= {
 				.dma_mask		= &ohci_dmamask,
-				.coherent_dma_mask	= 0xffffffff,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
 				.platform_data		= &usbh_data,
 	},
 	.resource	= usbh_resources,
@@ -131,7 +133,7 @@ void __init at91_add_device_udc(struct at91_udc_data *data) {}
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
-static u64 mmc_dmamask = 0xffffffffUL;
+static u64 mmc_dmamask = DMA_BIT_MASK(32);
 static struct at91_mmc_data mmc_data;
 
 static struct resource mmc_resources[] = {
@@ -152,7 +154,7 @@ static struct platform_device at91sam9261_mmc_device = {
 	.id		= -1,
 	.dev		= {
 				.dma_mask		= &mmc_dmamask,
-				.coherent_dma_mask	= 0xffffffff,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
 				.platform_data		= &mmc_data,
 	},
 	.resource	= mmc_resources,
@@ -276,7 +278,40 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
  *  TWI (i2c)
  * -------------------------------------------------------------------- */
 
-#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
+/*
+ * Prefer the GPIO code since the TWI controller isn't robust
+ * (gets overruns and underruns under load) and can only issue
+ * repeated STARTs in one scenario (the driver doesn't yet handle them).
+ */
+#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
+
+static struct i2c_gpio_platform_data pdata = {
+	.sda_pin		= AT91_PIN_PA7,
+	.sda_is_open_drain	= 1,
+	.scl_pin		= AT91_PIN_PA8,
+	.scl_is_open_drain	= 1,
+	.udelay			= 2,		/* ~100 kHz */
+};
+
+static struct platform_device at91sam9261_twi_device = {
+	.name			= "i2c-gpio",
+	.id			= -1,
+	.dev.platform_data	= &pdata,
+};
+
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
+{
+	at91_set_GPIO_periph(AT91_PIN_PA7, 1);		/* TWD (SDA) */
+	at91_set_multi_drive(AT91_PIN_PA7, 1);
+
+	at91_set_GPIO_periph(AT91_PIN_PA8, 1);		/* TWCK (SCL) */
+	at91_set_multi_drive(AT91_PIN_PA8, 1);
+
+	i2c_register_board_info(0, devices, nr_devices);
+	platform_device_register(&at91sam9261_twi_device);
+}
+
+#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 
 static struct resource twi_resources[] = {
 	[0] = {
@@ -298,7 +333,7 @@ static struct platform_device at91sam9261_twi_device = {
 	.num_resources	= ARRAY_SIZE(twi_resources),
 };
 
-void __init at91_add_device_i2c(void)
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 {
 	/* pins used for TWI interface */
 	at91_set_A_periph(AT91_PIN_PA7, 0);		/* TWD */
@@ -307,10 +342,11 @@ void __init at91_add_device_i2c(void)
 	at91_set_A_periph(AT91_PIN_PA8, 0);		/* TWCK */
 	at91_set_multi_drive(AT91_PIN_PA8, 1);
 
+	i2c_register_board_info(0, devices, nr_devices);
 	platform_device_register(&at91sam9261_twi_device);
 }
 #else
-void __init at91_add_device_i2c(void) {}
+void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 #endif
 
 
@@ -319,7 +355,7 @@ void __init at91_add_device_i2c(void) {}
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
-static u64 spi_dmamask = 0xffffffffUL;
+static u64 spi_dmamask = DMA_BIT_MASK(32);
 
 static struct resource spi0_resources[] = {
 	[0] = {
@@ -339,7 +375,7 @@ static struct platform_device at91sam9261_spi0_device = {
 	.id		= 0,
 	.dev		= {
 				.dma_mask		= &spi_dmamask,
-				.coherent_dma_mask	= 0xffffffff,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
 	},
 	.resource	= spi0_resources,
 	.num_resources	= ARRAY_SIZE(spi0_resources),
@@ -365,7 +401,7 @@ static struct platform_device at91sam9261_spi1_device = {
 	.id		= 1,
 	.dev		= {
 				.dma_mask		= &spi_dmamask,
-				.coherent_dma_mask	= 0xffffffff,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
 	},
 	.resource	= spi1_resources,
 	.num_resources	= ARRAY_SIZE(spi1_resources),
@@ -431,7 +467,7 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
-static u64 lcdc_dmamask = 0xffffffffUL;
+static u64 lcdc_dmamask = DMA_BIT_MASK(32);
 static struct atmel_lcdfb_info lcdc_data;
 
 static struct resource lcdc_resources[] = {
@@ -459,7 +495,7 @@ static struct platform_device at91_lcdc_device = {
 	.id		= 0,
 	.dev		= {
 				.dma_mask		= &lcdc_dmamask,
-				.coherent_dma_mask	= 0xffffffff,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
 				.platform_data		= &lcdc_data,
 	},
 	.resource	= lcdc_resources,
@@ -472,6 +508,17 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
 		return;
 	}
 
+#if defined(CONFIG_FB_ATMEL_STN)
+	at91_set_A_periph(AT91_PIN_PB0, 0);     /* LCDVSYNC */
+	at91_set_A_periph(AT91_PIN_PB1, 0);     /* LCDHSYNC */
+	at91_set_A_periph(AT91_PIN_PB2, 0);     /* LCDDOTCK */
+	at91_set_A_periph(AT91_PIN_PB3, 0);     /* LCDDEN */
+	at91_set_A_periph(AT91_PIN_PB4, 0);     /* LCDCC */
+	at91_set_A_periph(AT91_PIN_PB5, 0);     /* LCDD0 */
+	at91_set_A_periph(AT91_PIN_PB6, 0);     /* LCDD1 */
+	at91_set_A_periph(AT91_PIN_PB7, 0);     /* LCDD2 */
+	at91_set_A_periph(AT91_PIN_PB8, 0);     /* LCDD3 */
+#else
 	at91_set_A_periph(AT91_PIN_PB1, 0);	/* LCDHSYNC */
 	at91_set_A_periph(AT91_PIN_PB2, 0);	/* LCDDOTCK */
 	at91_set_A_periph(AT91_PIN_PB3, 0);	/* LCDDEN */
@@ -494,6 +541,7 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
 	at91_set_B_periph(AT91_PIN_PB26, 0);	/* LCDD21 */
 	at91_set_B_periph(AT91_PIN_PB27, 0);	/* LCDD22 */
 	at91_set_B_periph(AT91_PIN_PB28, 0);	/* LCDD23 */
+#endif
 
 	lcdc_data = *data;
 	platform_device_register(&at91_lcdc_device);
@@ -503,6 +551,51 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
 #endif
 
 
+/* --------------------------------------------------------------------
+ *  RTT
+ * -------------------------------------------------------------------- */
+
+static struct resource rtt_resources[] = {
+	{
+		.start	= AT91_BASE_SYS + AT91_RTT,
+		.end	= AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
+		.flags	= IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device at91sam9261_rtt_device = {
+	.name		= "at91_rtt",
+	.id		= -1,
+	.resource	= rtt_resources,
+	.num_resources	= ARRAY_SIZE(rtt_resources),
+};
+
+static void __init at91_add_device_rtt(void)
+{
+	platform_device_register(&at91sam9261_rtt_device);
+}
+
+
+/* --------------------------------------------------------------------
+ *  Watchdog
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
+static struct platform_device at91sam9261_wdt_device = {
+	.name		= "at91_wdt",
+	.id		= -1,
+	.num_resources	= 0,
+};
+
+static void __init at91_add_device_watchdog(void)
+{
+	platform_device_register(&at91sam9261_wdt_device);
+}
+#else
+static void __init at91_add_device_watchdog(void) {}
+#endif
+
+
 /* --------------------------------------------------------------------
  *  LEDs
  * -------------------------------------------------------------------- */
@@ -549,12 +642,15 @@ static struct atmel_uart_data dbgu_data = {
 	.regs		= (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 };
 
+static u64 dbgu_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9261_dbgu_device = {
 	.name		= "atmel_usart",
 	.id		= 0,
 	.dev		= {
-				.platform_data	= &dbgu_data,
-				.coherent_dma_mask = 0xffffffff,
+				.dma_mask		= &dbgu_dmamask,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
+				.platform_data		= &dbgu_data,
 	},
 	.resource	= dbgu_resources,
 	.num_resources	= ARRAY_SIZE(dbgu_resources),
@@ -584,12 +680,15 @@ static struct atmel_uart_data uart0_data = {
 	.use_dma_rx	= 1,
 };
 
+static u64 uart0_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9261_uart0_device = {
 	.name		= "atmel_usart",
 	.id		= 1,
 	.dev		= {
-				.platform_data	= &uart0_data,
-				.coherent_dma_mask = 0xffffffff,
+				.dma_mask		= &uart0_dmamask,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
+				.platform_data		= &uart0_data,
 	},
 	.resource	= uart0_resources,
 	.num_resources	= ARRAY_SIZE(uart0_resources),
@@ -621,12 +720,15 @@ static struct atmel_uart_data uart1_data = {
 	.use_dma_rx	= 1,
 };
 
+static u64 uart1_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9261_uart1_device = {
 	.name		= "atmel_usart",
 	.id		= 2,
 	.dev		= {
-				.platform_data	= &uart1_data,
-				.coherent_dma_mask = 0xffffffff,
+				.dma_mask		= &uart1_dmamask,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
+				.platform_data		= &uart1_data,
 	},
 	.resource	= uart1_resources,
 	.num_resources	= ARRAY_SIZE(uart1_resources),
@@ -656,12 +758,15 @@ static struct atmel_uart_data uart2_data = {
 	.use_dma_rx	= 1,
 };
 
+static u64 uart2_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9261_uart2_device = {
 	.name		= "atmel_usart",
 	.id		= 3,
 	.dev		= {
-				.platform_data	= &uart2_data,
-				.coherent_dma_mask = 0xffffffff,
+				.dma_mask		= &uart2_dmamask,
+				.coherent_dma_mask	= DMA_BIT_MASK(32),
+				.platform_data		= &uart2_data,
 	},
 	.resource	= uart2_resources,
 	.num_resources	= ARRAY_SIZE(uart2_resources),
@@ -673,7 +778,7 @@ static inline void configure_usart2_pins(void)
 	at91_set_A_periph(AT91_PIN_PC14, 1);		/* TXD2 */
 }
 
-struct platform_device *at91_uarts[ATMEL_MAX_UART];	/* the UARTs to use */
+static struct platform_device *at91_uarts[ATMEL_MAX_UART];	/* the UARTs to use */
 struct platform_device *atmel_default_console_device;	/* the serial console device */
 
 void __init at91_init_serial(struct at91_uart_config *config)
@@ -739,6 +844,8 @@ void __init at91_add_device_serial(void) {}
  */
 static int __init at91_add_standard_devices(void)
 {
+	at91_add_device_rtt();
+	at91_add_device_watchdog();
 	return 0;
 }