1 files changed, 322 insertions, 15 deletions

diff --git a/arch/arm/mach-davinci/board-evm.c b/arch/arm/mach-davinci/board-evm.c
index 2db7b7850fb5..9581675f6586 100644
--- a/arch/arm/mach-davinci/board-evm.c
+++ b/arch/arm/mach-davinci/board-evm.c
@@ -13,6 +13,13 @@
 #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>
@@ -20,13 +27,14 @@
 #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);
@@ -34,10 +42,10 @@ void __init davinci_irq_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",
@@ -68,32 +76,323 @@ static struct mtd_partition davinci_evm_partitions[] = {
         }
 };
 
-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
@@ -106,13 +405,21 @@ static __init void davinci_evm_init(void)
 {
         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)