1 files changed, 440 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-evm.c b/arch/arm/mach-davinci/board-evm.c
new file mode 100644
index 0000000..a957d23
--- /dev/null
+++ b/arch/arm/mach-davinci/board-evm.c
@@ -0,0 +1,440 @@
+/*
+ * TI DaVinci EVM board support
+ *
+ * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/leds.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c/pcf857x.h>
+#include <linux/i2c/at24.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/io.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <mach/hardware.h>
+#include <mach/common.h>
+#include <mach/i2c.h>
+
+/* other misc. init functions */
+void __init davinci_psc_init(void);
+void __init davinci_irq_init(void);
+void __init davinci_map_common_io(void);
+void __init davinci_init_common_hw(void);
+
+#if defined(CONFIG_MTD_PHYSMAP) || \
+    defined(CONFIG_MTD_PHYSMAP_MODULE)
+
+static struct mtd_partition davinci_evm_norflash_partitions[] = {
+	/* bootloader (U-Boot, etc) in first 4 sectors */
+	{
+		.name		= "bootloader",
+		.offset		= 0,
+		.size		= 4 * SZ_64K,
+		.mask_flags	= MTD_WRITEABLE, /* force read-only */
+	},
+	/* bootloader params in the next 1 sectors */
+	{
+		.name		= "params",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_64K,
+		.mask_flags	= 0,
+	},
+	/* kernel */
+	{
+		.name		= "kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_2M,
+		.mask_flags	= 0
+	},
+	/* file system */
+	{
+		.name		= "filesystem",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0
+	}
+};
+
+static struct physmap_flash_data davinci_evm_norflash_data = {
+	.width		= 2,
+	.parts		= davinci_evm_norflash_partitions,
+	.nr_parts	= ARRAY_SIZE(davinci_evm_norflash_partitions),
+};
+
+/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
+ * limits addresses to 16M, so using addresses past 16M will wrap */
+static struct resource davinci_evm_norflash_resource = {
+	.start		= DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
+	.end		= DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device davinci_evm_norflash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &davinci_evm_norflash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &davinci_evm_norflash_resource,
+};
+
+#endif
+
+#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
+    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
+
+static struct resource ide_resources[] = {
+	{
+		.start          = DAVINCI_CFC_ATA_BASE,
+		.end            = DAVINCI_CFC_ATA_BASE + 0x7ff,
+		.flags          = IORESOURCE_MEM,
+	},
+	{
+		.start          = IRQ_IDE,
+		.end            = IRQ_IDE,
+		.flags          = IORESOURCE_IRQ,
+	},
+};
+
+static u64 ide_dma_mask = DMA_32BIT_MASK;
+
+static struct platform_device ide_dev = {
+	.name           = "palm_bk3710",
+	.id             = -1,
+	.resource       = ide_resources,
+	.num_resources  = ARRAY_SIZE(ide_resources),
+	.dev = {
+		.dma_mask		= &ide_dma_mask,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
+	},
+};
+
+#endif
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * I2C GPIO expanders
+ */
+
+#define PCF_Uxx_BASE(x)	(DAVINCI_N_GPIO + ((x) * 8))
+
+
+/* U2 -- LEDs */
+
+static struct gpio_led evm_leds[] = {
+	{ .name = "DS8", .active_low = 1,
+		.default_trigger = "heartbeat", },
+	{ .name = "DS7", .active_low = 1, },
+	{ .name = "DS6", .active_low = 1, },
+	{ .name = "DS5", .active_low = 1, },
+	{ .name = "DS4", .active_low = 1, },
+	{ .name = "DS3", .active_low = 1, },
+	{ .name = "DS2", .active_low = 1,
+		.default_trigger = "mmc0", },
+	{ .name = "DS1", .active_low = 1,
+		.default_trigger = "ide-disk", },
+};
+
+static const struct gpio_led_platform_data evm_led_data = {
+	.num_leds	= ARRAY_SIZE(evm_leds),
+	.leds		= evm_leds,
+};
+
+static struct platform_device *evm_led_dev;
+
+static int
+evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	struct gpio_led *leds = evm_leds;
+	int status;
+
+	while (ngpio--) {
+		leds->gpio = gpio++;
+		leds++;
+	}
+
+	/* what an extremely annoying way to be forced to handle
+	 * device unregistration ...
+	 */
+	evm_led_dev = platform_device_alloc("leds-gpio", 0);
+	platform_device_add_data(evm_led_dev,
+			&evm_led_data, sizeof evm_led_data);
+
+	evm_led_dev->dev.parent = &client->dev;
+	status = platform_device_add(evm_led_dev);
+	if (status < 0) {
+		platform_device_put(evm_led_dev);
+		evm_led_dev = NULL;
+	}
+	return status;
+}
+
+static int
+evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	if (evm_led_dev) {
+		platform_device_unregister(evm_led_dev);
+		evm_led_dev = NULL;
+	}
+	return 0;
+}
+
+static struct pcf857x_platform_data pcf_data_u2 = {
+	.gpio_base	= PCF_Uxx_BASE(0),
+	.setup		= evm_led_setup,
+	.teardown	= evm_led_teardown,
+};
+
+
+/* U18 - A/V clock generator and user switch */
+
+static int sw_gpio;
+
+static ssize_t
+sw_show(struct device *d, struct device_attribute *a, char *buf)
+{
+	char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";
+
+	strcpy(buf, s);
+	return strlen(s);
+}
+
+static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);
+
+static int
+evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	int	status;
+
+	/* export dip switch option */
+	sw_gpio = gpio + 7;
+	status = gpio_request(sw_gpio, "user_sw");
+	if (status == 0)
+		status = gpio_direction_input(sw_gpio);
+	if (status == 0)
+		status = device_create_file(&client->dev, &dev_attr_user_sw);
+	else
+		gpio_free(sw_gpio);
+	if (status != 0)
+		sw_gpio = -EINVAL;
+
+	/* audio PLL:  48 kHz (vs 44.1 or 32), single rate (vs double) */
+	gpio_request(gpio + 3, "pll_fs2");
+	gpio_direction_output(gpio + 3, 0);
+
+	gpio_request(gpio + 2, "pll_fs1");
+	gpio_direction_output(gpio + 2, 0);
+
+	gpio_request(gpio + 1, "pll_sr");
+	gpio_direction_output(gpio + 1, 0);
+
+	return 0;
+}
+
+static int
+evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	gpio_free(gpio + 1);
+	gpio_free(gpio + 2);
+	gpio_free(gpio + 3);
+
+	if (sw_gpio > 0) {
+		device_remove_file(&client->dev, &dev_attr_user_sw);
+		gpio_free(sw_gpio);
+	}
+	return 0;
+}
+
+static struct pcf857x_platform_data pcf_data_u18 = {
+	.gpio_base	= PCF_Uxx_BASE(1),
+	.n_latch	= (1 << 3) | (1 << 2) | (1 << 1),
+	.setup		= evm_u18_setup,
+	.teardown	= evm_u18_teardown,
+};
+
+
+/* U35 - various I/O signals used to manage USB, CF, ATA, etc */
+
+static int
+evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	/* p0 = nDRV_VBUS (initial:  don't supply it) */
+	gpio_request(gpio + 0, "nDRV_VBUS");
+	gpio_direction_output(gpio + 0, 1);
+
+	/* p1 = VDDIMX_EN */
+	gpio_request(gpio + 1, "VDDIMX_EN");
+	gpio_direction_output(gpio + 1, 1);
+
+	/* p2 = VLYNQ_EN */
+	gpio_request(gpio + 2, "VLYNQ_EN");
+	gpio_direction_output(gpio + 2, 1);
+
+	/* p3 = n3V3_CF_RESET (initial: stay in reset) */
+	gpio_request(gpio + 3, "nCF_RESET");
+	gpio_direction_output(gpio + 3, 0);
+
+	/* (p4 unused) */
+
+	/* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
+	gpio_request(gpio + 5, "WLAN_RESET");
+	gpio_direction_output(gpio + 5, 1);
+
+	/* p6 = nATA_SEL (initial: select) */
+	gpio_request(gpio + 6, "nATA_SEL");
+	gpio_direction_output(gpio + 6, 0);
+
+	/* p7 = nCF_SEL (initial: deselect) */
+	gpio_request(gpio + 7, "nCF_SEL");
+	gpio_direction_output(gpio + 7, 1);
+
+	return 0;
+}
+
+static int
+evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	gpio_free(gpio + 7);
+	gpio_free(gpio + 6);
+	gpio_free(gpio + 5);
+	gpio_free(gpio + 3);
+	gpio_free(gpio + 2);
+	gpio_free(gpio + 1);
+	gpio_free(gpio + 0);
+	return 0;
+}
+
+static struct pcf857x_platform_data pcf_data_u35 = {
+	.gpio_base	= PCF_Uxx_BASE(2),
+	.setup		= evm_u35_setup,
+	.teardown	= evm_u35_teardown,
+};
+
+/*----------------------------------------------------------------------*/
+
+/* Most of this EEPROM is unused, but U-Boot uses some data:
+ *  - 0x7f00, 6 bytes Ethernet Address
+ *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
+ *  - ... newer boards may have more
+ */
+static struct at24_platform_data eeprom_info = {
+	.byte_len	= (256*1024) / 8,
+	.page_size	= 64,
+	.flags		= AT24_FLAG_ADDR16,
+};
+
+static struct i2c_board_info __initdata i2c_info[] =  {
+	{
+		I2C_BOARD_INFO("pcf8574", 0x38),
+		.platform_data	= &pcf_data_u2,
+	},
+	{
+		I2C_BOARD_INFO("pcf8574", 0x39),
+		.platform_data	= &pcf_data_u18,
+	},
+	{
+		I2C_BOARD_INFO("pcf8574", 0x3a),
+		.platform_data	= &pcf_data_u35,
+	},
+	{
+		I2C_BOARD_INFO("24c256", 0x50),
+		.platform_data	= &eeprom_info,
+	},
+	/* ALSO:
+	 * - tvl320aic33 audio codec (0x1b)
+	 * - msp430 microcontroller (0x23)
+	 * - tvp5146 video decoder (0x5d)
+	 */
+};
+
+/* The msp430 uses a slow bitbanged I2C implementation (ergo 20 KHz),
+ * which requires 100 usec of idle bus after i2c writes sent to it.
+ */
+static struct davinci_i2c_platform_data i2c_pdata = {
+	.bus_freq	= 20 /* kHz */,
+	.bus_delay	= 100 /* usec */,
+};
+
+static void __init evm_init_i2c(void)
+{
+	davinci_init_i2c(&i2c_pdata);
+	i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
+}
+
+static struct platform_device *davinci_evm_devices[] __initdata = {
+#if defined(CONFIG_MTD_PHYSMAP) || \
+    defined(CONFIG_MTD_PHYSMAP_MODULE)
+	&davinci_evm_norflash_device,
+#endif
+#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
+    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
+	&ide_dev,
+#endif
+};
+
+static void __init
+davinci_evm_map_io(void)
+{
+	davinci_map_common_io();
+}
+
+static __init void davinci_evm_init(void)
+{
+	davinci_psc_init();
+
+#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
+    defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
+#if defined(CONFIG_MTD_PHYSMAP) || \
+    defined(CONFIG_MTD_PHYSMAP_MODULE)
+	printk(KERN_WARNING "WARNING: both IDE and NOR flash are enabled, "
+	       "but share pins.\n\t Disable IDE for NOR support.\n");
+#endif
+#endif
+
+	platform_add_devices(davinci_evm_devices,
+			     ARRAY_SIZE(davinci_evm_devices));
+	evm_init_i2c();
+
+	/* irlml6401 sustains over 3A, switches 5V in under 8 msec */
+	setup_usb(500, 8);
+}
+
+static __init void davinci_evm_irq_init(void)
+{
+	davinci_init_common_hw();
+	davinci_irq_init();
+}
+
+MACHINE_START(DAVINCI_EVM, "DaVinci EVM")
+	/* Maintainer: MontaVista Software <source@mvista.com> */
+	.phys_io      = IO_PHYS,
+	.io_pg_offst  = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
+	.boot_params  = (DAVINCI_DDR_BASE + 0x100),
+	.map_io	      = davinci_evm_map_io,
+	.init_irq     = davinci_evm_irq_init,
+	.timer	      = &davinci_timer,
+	.init_machine = davinci_evm_init,
+MACHINE_END