colibri-pxa3xx.c

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/*
 *  arch/arm/mach-pxa/colibri-pxa3xx.c
 *
 *  Common functions for all Toradex PXA3xx modules
 *
 *  Daniel Mack <[email protected]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/etherdevice.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
#include <asm/system_info.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <mach/pxa3xx-regs.h>
#include <mach/mfp-pxa300.h>
#include <mach/colibri.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/mtd-nand-pxa3xx.h>

#include "generic.h"
#include "devices.h"

#if defined(CONFIG_AX88796)
#define ETHER_ADDR_LEN 6
static u8 ether_mac_addr[ETHER_ADDR_LEN];

void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
{
    int i;
    u64 serial = ((u64) system_serial_high << 32) | system_serial_low;

    /*
     * If the bootloader passed in a serial boot tag, which contains a
     * valid ethernet MAC, pass it to the interface. Toradex ships the
     * modules with their own bootloader which provides a valid MAC
     * this way.
     */

    for (i = 0; i < ETHER_ADDR_LEN; i++) {
        ether_mac_addr[i] = serial & 0xff;
        serial >>= 8;
    }

    if (is_valid_ether_addr(ether_mac_addr)) {
        plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
        plat_data->mac_addr = ether_mac_addr;
        printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
            __func__);
    } else {
        plat_data->flags |= AXFLG_MAC_FROMDEV;
        printk(KERN_INFO "%s(): no valid serial boot tag found, "
            "taking MAC from device\n", __func__);
    }
}
#endif

#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static int lcd_bl_pin;

/*
 * LCD panel (Sharp LQ043T3DX02)
 */
static void colibri_lcd_backlight(int on)
{
    gpio_set_value(lcd_bl_pin, !!on);
}

static struct pxafb_mode_info sharp_lq43_mode = {
    .pixclock   = 101936,
    .xres       = 480,
    .yres       = 272,
    .bpp        = 32,
    .depth      = 18,
    .hsync_len      = 41,
    .left_margin    = 2,
    .right_margin   = 2,
    .vsync_len      = 10,
    .upper_margin   = 2,
    .lower_margin   = 2,
    .sync       = 0,
    .cmap_greyscale = 0,
};

static struct pxafb_mach_info sharp_lq43_info = {
    .modes      = &sharp_lq43_mode,
    .num_modes  = 1,
    .cmap_inverse   = 0,
    .cmap_static    = 0,
    .lcd_conn   = LCD_COLOR_TFT_18BPP,
    .pxafb_backlight_power = colibri_lcd_backlight,
};

void __init colibri_pxa3xx_init_lcd(int bl_pin)
{
    lcd_bl_pin = bl_pin;
    gpio_request(bl_pin, "lcd backlight");
    gpio_direction_output(bl_pin, 0);
    pxa_set_fb_info(NULL, &sharp_lq43_info);
}
#endif

#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
static struct mtd_partition colibri_nand_partitions[] = {
    {
        .name        = "bootloader",
        .offset      = 0,
        .size        = SZ_512K,
        .mask_flags  = MTD_WRITEABLE, /* force read-only */
    },
    {
        .name        = "kernel",
        .offset      = MTDPART_OFS_APPEND,
        .size        = SZ_4M,
        .mask_flags  = MTD_WRITEABLE, /* force read-only */
    },
    {
        .name        = "reserved",
        .offset      = MTDPART_OFS_APPEND,
        .size        = SZ_1M,
        .mask_flags  = MTD_WRITEABLE, /* force read-only */
    },
    {
        .name        = "fs",
        .offset      = MTDPART_OFS_APPEND,
        .size        = MTDPART_SIZ_FULL,
    },
};

static struct pxa3xx_nand_platform_data colibri_nand_info = {
    .enable_arbiter = 1,
    .keep_config    = 1,
    .num_cs     = 1,
    .parts[0]   = colibri_nand_partitions,
    .nr_parts[0]    = ARRAY_SIZE(colibri_nand_partitions),
};

void __init colibri_pxa3xx_init_nand(void)
{
    pxa3xx_set_nand_info(&colibri_nand_info);
}
#endif