#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 <asm/setup.h>
#include <asm/io.h>
#include <asm/mach-types.h>
-#include <mach/hardware.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_map_common_io(void);
void __init davinci_init_common_hw(void);
-/* NOR Flash base address set to CS0 by default */
-#define NOR_FLASH_PHYS 0x02000000
+#if defined(CONFIG_MTD_PHYSMAP) || \
+ defined(CONFIG_MTD_PHYSMAP_MODULE)
-static struct mtd_partition davinci_evm_partitions[] = {
+static struct mtd_partition davinci_evm_norflash_partitions[] = {
/* bootloader (U-Boot, etc) in first 4 sectors */
{
.name = "bootloader",
}
};
-static struct physmap_flash_data davinci_evm_flash_data = {
+static struct physmap_flash_data davinci_evm_norflash_data = {
.width = 2,
- .parts = davinci_evm_partitions,
- .nr_parts = ARRAY_SIZE(davinci_evm_partitions),
+ .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_flash_resource = {
- .start = NOR_FLASH_PHYS,
- .end = NOR_FLASH_PHYS + SZ_16M - 1,
+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_flash_device = {
+static struct platform_device davinci_evm_norflash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
- .platform_data = &davinci_evm_flash_data,
+ .platform_data = &davinci_evm_norflash_data,
},
.num_resources = 1,
- .resource = &davinci_evm_flash_resource,
+ .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 = {
- &davinci_evm_flash_device,
+#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_psc_init();
-#if defined(CONFIG_BLK_DEV_DAVINCI) || defined(CONFIG_BLK_DEV_DAVINCI_MODULE)
+#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)
git.openpandora.org / pandora-kernel.git / commitdiff