zylonite.c

linux 内核源代码

/*
 * linux/arch/arm/mach-pxa/zylonite.c
 *
 * Support for the PXA3xx Development Platform (aka Zylonite)
 *
 * Copyright (C) 2006 Marvell International Ltd.
 *
 * 2007-09-04: eric miao <[e-mail]>
 *             rewrite to align with latest kernel
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/platform_device.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/hardware.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/zylonite.h>

#include "generic.h"

int gpio_backlight;
int gpio_eth_irq;

int lcd_id;
int lcd_orientation;

static struct resource smc91x_resources[] = {
	[0] = {
		.start	= ZYLONITE_ETH_PHYS + 0x300,
		.end	= ZYLONITE_ETH_PHYS + 0xfffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= -1,	/* for run-time assignment */
		.end	= -1,
		.flags	= IORESOURCE_IRQ,
	}
};

static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
};

#if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULES)
static void zylonite_backlight_power(int on)
{
	gpio_set_value(gpio_backlight, on);
}

static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
	.pixclock		= 110000,
	.xres			= 240,
	.yres			= 320,
	.bpp			= 16,
	.hsync_len		= 4,
	.left_margin		= 6,
	.right_margin		= 4,
	.vsync_len		= 2,
	.upper_margin		= 2,
	.lower_margin		= 3,
	.sync			= FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
	.pixclock		= 50000,
	.xres			= 640,
	.yres			= 480,
	.bpp			= 16,
	.hsync_len		= 1,
	.left_margin		= 0x9f,
	.right_margin		= 1,
	.vsync_len		= 44,
	.upper_margin		= 0,
	.lower_margin		= 0,
	.sync			= FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info zylonite_toshiba_lcd_info = {
	.num_modes      	= 1,
	.lccr0			= LCCR0_Act,
	.lccr3			= LCCR3_PCP,
	.pxafb_backlight_power	= zylonite_backlight_power,
};

static struct pxafb_mode_info sharp_ls037_modes[] = {
	[0] = {
		.pixclock	= 158000,
		.xres		= 240,
		.yres		= 320,
		.bpp		= 16,
		.hsync_len	= 4,
		.left_margin	= 39,
		.right_margin	= 39,
		.vsync_len	= 1,
		.upper_margin	= 2,
		.lower_margin	= 3,
		.sync		= 0,
	},
	[1] = {
		.pixclock	= 39700,
		.xres		= 480,
		.yres		= 640,
		.bpp		= 16,
		.hsync_len	= 8,
		.left_margin	= 81,
		.right_margin	= 81,
		.vsync_len	= 1,
		.upper_margin	= 2,
		.lower_margin	= 7,
		.sync		= 0,
	},
};

static struct pxafb_mach_info zylonite_sharp_lcd_info = {
	.modes			= sharp_ls037_modes,
	.num_modes		= 2,
	.lccr0			= LCCR0_Act,
	.lccr3			= LCCR3_PCP | LCCR3_HSP | LCCR3_VSP,
	.pxafb_backlight_power	= zylonite_backlight_power,
};

static void __init zylonite_init_lcd(void)
{
	/* backlight GPIO: output, default on */
	gpio_direction_output(gpio_backlight, 1);

	if (lcd_id & 0x20) {
		set_pxa_fb_info(&zylonite_sharp_lcd_info);
		return;
	}

	/* legacy LCD panels, it would be handy here if LCD panel type can
	 * be decided at run-time
	 */
	if (1)
		zylonite_toshiba_lcd_info.modes = &toshiba_ltm035a776c_mode;
	else
		zylonite_toshiba_lcd_info.modes = &toshiba_ltm04c380k_mode;

	set_pxa_fb_info(&zylonite_toshiba_lcd_info);
}
#else
static inline void zylonite_init_lcd(void) {}
#endif

static void __init zylonite_init(void)
{
	/* board-processor specific initialization */
	zylonite_pxa300_init();
	zylonite_pxa320_init();

	/*
	 * Note: We depend that the bootloader set
	 * the correct value to MSC register for SMC91x.
	 */
	smc91x_resources[1].start = gpio_to_irq(gpio_eth_irq);
	smc91x_resources[1].end   = gpio_to_irq(gpio_eth_irq);
	platform_device_register(&smc91x_device);

	zylonite_init_lcd();
}

MACHINE_START(ZYLONITE, "PXA3xx Platform Development Kit (aka Zylonite)")
	.phys_io	= 0x40000000,
	.boot_params	= 0xa0000100,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.map_io		= pxa_map_io,
	.init_irq	= pxa3xx_init_irq,
	.timer		= &pxa_timer,
	.init_machine	= zylonite_init,
MACHINE_END