omap3: pandora: add NAND and wifi support

Add platform data for NAND and wifi, also setup all GPIOs
needed to use the wifi chip.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 7a127291b7da..a58bdef1b4da 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -25,6 +25,9 @@
 #include <linux/spi/ads7846.h>
 #include <linux/regulator/machine.h>
 #include <linux/i2c/twl.h>
+#include <linux/spi/wl12xx.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
 #include <linux/leds.h>
 #include <linux/input.h>
 #include <linux/input/matrix_keypad.h>
@@ -41,13 +44,50 @@
 #include <plat/mcspi.h>
 #include <plat/usb.h>
 #include <plat/display.h>
+#include <plat/nand.h>
 
 #include "mux.h"
 #include "sdram-micron-mt46h32m32lf-6.h"
 #include "hsmmc.h"
 
+#define PANDORA_WIFI_IRQ_GPIO           21
+#define PANDORA_WIFI_NRESET_GPIO        23
 #define OMAP3_PANDORA_TS_GPIO           94
 
+#define NAND_BLOCK_SIZE                 SZ_128K
+
+static struct mtd_partition omap3pandora_nand_partitions[] = {
+        {
+                .name           = "xloader",
+                .offset         = 0,
+                .size           = 4 * NAND_BLOCK_SIZE,
+                .mask_flags     = MTD_WRITEABLE
+        }, {
+                .name           = "uboot",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = 15 * NAND_BLOCK_SIZE,
+        }, {
+                .name           = "uboot-env",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = 1 * NAND_BLOCK_SIZE,
+        }, {
+                .name           = "boot",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = 80 * NAND_BLOCK_SIZE,
+        }, {
+                .name           = "rootfs",
+                .offset         = MTDPART_OFS_APPEND,
+                .size           = MTDPART_SIZ_FULL,
+        },
+};
+
+static struct omap_nand_platform_data pandora_nand_data = {
+        .cs             = 0,
+        .devsize        = 1,    /* '0' for 8-bit, '1' for 16-bit device */
+        .parts          = omap3pandora_nand_partitions,
+        .nr_parts       = ARRAY_SIZE(omap3pandora_nand_partitions),
+};
+
 static struct gpio_led pandora_gpio_leds[] = {
         {
                 .name                   = "pandora::sd1",
@@ -246,12 +286,33 @@ static struct omap2_hsmmc_info omap3pandora_mmc[] = {
 static int omap3pandora_twl_gpio_setup(struct device *dev,
                 unsigned gpio, unsigned ngpio)
 {
+        int ret, gpio_32khz;
+
         /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
         omap3pandora_mmc[0].gpio_cd = gpio + 0;
         omap3pandora_mmc[1].gpio_cd = gpio + 1;
         omap2_hsmmc_init(omap3pandora_mmc);
 
+        /* gpio + 13 drives 32kHz buffer for wifi module */
+        gpio_32khz = gpio + 13;
+        ret = gpio_request(gpio_32khz, "wifi 32kHz");
+        if (ret < 0) {
+                pr_err("Cannot get GPIO line %d, ret=%d\n", gpio_32khz, ret);
+                goto fail;
+        }
+
+        ret = gpio_direction_output(gpio_32khz, 1);
+        if (ret < 0) {
+                pr_err("Cannot set GPIO line %d, ret=%d\n", gpio_32khz, ret);
+                goto fail_direction;
+        }
+
         return 0;
+
+fail_direction:
+        gpio_free(gpio_32khz);
+fail:
+        return -ENODEV;
 }
 
 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
@@ -530,10 +591,67 @@ static void __init omap3pandora_init_irq(void)
         omap_gpio_init();
 }
 
+static void pandora_wl1251_set_power(bool enable)
+{
+        /*
+         * Keep power always on until wl1251_sdio driver learns to re-init
+         * the chip after powering it down and back up.
+         */
+}
+
+static struct wl12xx_platform_data pandora_wl1251_pdata = {
+        .set_power      = pandora_wl1251_set_power,
+        .use_eeprom     = true,
+};
+
+static struct platform_device pandora_wl1251_data = {
+        .name           = "wl1251_data",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &pandora_wl1251_pdata,
+        },
+};
+
+static void pandora_wl1251_init(void)
+{
+        int ret;
+
+        ret = gpio_request(PANDORA_WIFI_IRQ_GPIO, "wl1251 irq");
+        if (ret < 0)
+                goto fail;
+
+        ret = gpio_direction_input(PANDORA_WIFI_IRQ_GPIO);
+        if (ret < 0)
+                goto fail_irq;
+
+        pandora_wl1251_pdata.irq = gpio_to_irq(PANDORA_WIFI_IRQ_GPIO);
+        if (pandora_wl1251_pdata.irq < 0)
+                goto fail_irq;
+
+        ret = gpio_request(PANDORA_WIFI_NRESET_GPIO, "wl1251 nreset");
+        if (ret < 0)
+                goto fail_irq;
+
+        /* start powered so that it probes with MMC subsystem */
+        ret = gpio_direction_output(PANDORA_WIFI_NRESET_GPIO, 1);
+        if (ret < 0)
+                goto fail_nreset;
+
+        return;
+
+fail_nreset:
+        gpio_free(PANDORA_WIFI_NRESET_GPIO);
+fail_irq:
+        gpio_free(PANDORA_WIFI_IRQ_GPIO);
+fail:
+        printk(KERN_ERR "wl1251 board initialisation failed\n");
+}
+
 static struct platform_device *omap3pandora_devices[] __initdata = {
         &pandora_leds_gpio,
         &pandora_keys_gpio,
         &pandora_dss_device,
+        &pandora_wl1251_data,
 };
 
 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
@@ -566,6 +684,7 @@ static void __init omap3pandora_init(void)
 {
         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
         omap3pandora_i2c_init();
+        pandora_wl1251_init();
         platform_add_devices(omap3pandora_devices,
                         ARRAY_SIZE(omap3pandora_devices));
         omap_serial_init();
@@ -574,6 +693,7 @@ static void __init omap3pandora_init(void)
         omap3pandora_ads7846_init();
         usb_ehci_init(&ehci_pdata);
         usb_musb_init(&musb_board_data);
+        gpmc_nand_init(&pandora_nand_data);
 
         /* Ensure SDRC pins are mux'd for self-refresh */
         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);