lubbock.c

来自「优龙2410linux2.6.8内核源代码」· C语言 代码 · 共 586 行

/*
 *  linux/arch/arm/mach-pxa/lubbock.c
 *
 *  Support for the Intel DBPXA250 Development Platform.
 *
 *  Author:	Nicolas Pitre
 *  Created:	Jun 15, 2001
 *  Copyright:	MontaVista Software Inc.
 *
 *  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/init.h>
#include <linux/device.h>
#include <linux/major.h>
#include <linux/fb.h>
#include <linux/interrupt.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <asm/arch/lubbock.h>
#include <asm/arch/udc.h>
#include <asm/arch/pxafb.h>
#include <asm/hardware/sa1111.h>

#include "generic.h"

#ifndef	CONFIG_ARCH_FS_PXA255
void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
{
	unsigned long flags;

	local_irq_save(flags);
	LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
	local_irq_restore(flags);
}
EXPORT_SYMBOL(lubbock_set_misc_wr);

static unsigned long lubbock_irq_enabled;

static void lubbock_mask_irq(unsigned int irq)
{
	int lubbock_irq = (irq - LUBBOCK_IRQ(0));
	LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
}

static void lubbock_unmask_irq(unsigned int irq)
{
	int lubbock_irq = (irq - LUBBOCK_IRQ(0));
	/* the irq can be acknowledged only if deasserted, so it's done here */
	LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
	LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
}

static struct irqchip lubbock_irq_chip = {
	.ack		= lubbock_mask_irq,
	.mask		= lubbock_mask_irq,
	.unmask		= lubbock_unmask_irq,
};

static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
				struct pt_regs *regs)
{
	unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
	do {
		GEDR(0) = GPIO_bit(0);	/* clear our parent irq */
		if (likely(pending)) {
			irq = LUBBOCK_IRQ(0) + __ffs(pending);
			desc = irq_desc + irq;
			desc->handle(irq, desc, regs);
		}
		pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
	} while (pending);
}
#endif

static void __init lubbock_init_irq(void)
{
	int irq;

	pxa_init_irq();

#ifndef	CONFIG_ARCH_FS_PXA255
	/* setup extra lubbock irqs */
	for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
		set_irq_chip(irq, &lubbock_irq_chip);
		set_irq_handler(irq, do_level_IRQ);
		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
	}

	set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
#else
	//set_irq_handler(IRQ_GPIO(3), do_level_IRQ);	//smc91c111 irq
	//set_irq_type(IRQ_GPIO(3), IRQT_RISING);	//smc91c111 irq
	//set_irq_type(IRQ_GPIO(22), IRQT_RISING);	//sl811hs irq, initialized in driver
	set_irq_type(IRQ_GPIO(9), IRQT_RISING);		//pen down
#endif
}

static int lubbock_udc_is_connected(void)
{
#ifdef	CONFIG_ARCH_FS_PXA255
  #ifdef	CONFIG_ARCH_FS_PXA255
	return (GPLR0 & (1<<27));	//GP27
  #else
	return (GPLR2 & (1<<20));	//GP84
  #endif
#else
	return (LUB_MISC_RD & (1 << 9)) == 0;
	//return 1;
#endif
}

static void lubbock_udc_command(int cmd)
{
#ifdef	CONFIG_ARCH_FS_PXA255
	if(cmd==PXA2XX_UDC_CMD_CONNECT) {
		pxa_gpio_mode(21|GPIO_OUT);		//udc connect
		GPSR0 = 1<<21;
	} else
		pxa_gpio_mode(21|GPIO_IN);		//udc disconnect
		//GPCR0 = 1<<21;
#endif
}

static struct pxa2xx_udc_mach_info udc_info __initdata = {
	.udc_is_connected	= lubbock_udc_is_connected,
	// no D+ pullup; lubbock can't connect/disconnect in software
	.udc_command		= lubbock_udc_command,
};

#ifndef	CONFIG_ARCH_FS_PXA255
static struct resource sa1111_resources[] = {
	[0] = {
		.start	= 0x10000000,
		.end	= 0x10001fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= LUBBOCK_SA1111_IRQ,
		.end	= LUBBOCK_SA1111_IRQ,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device sa1111_device = {
	.name		= "sa1111",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(sa1111_resources),
	.resource	= sa1111_resources,
};
#endif

static struct resource smc91x_resources[] = {
#ifdef	CONFIG_ARCH_FS_PXA255
	[0] = {
		.start	= 0x08000300,
		.end	= 0x080fffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_GPIO(3),
		.end	= IRQ_GPIO(3),
		.flags	= IORESOURCE_IRQ,
	},
	[2] = {
		.start	= 0x0a000000,
		.end	= 0x0a0fffff,
		.flags	= IORESOURCE_MEM,
	},
#else
	[0] = {
		.start	= 0x0c000000,
		.end	= 0x0c0fffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= LUBBOCK_ETH_IRQ,
		.end	= LUBBOCK_ETH_IRQ,
		.flags	= IORESOURCE_IRQ,
	},
	[2] = {
		.start	= 0x0e000000,
		.end	= 0x0e0fffff,
		.flags	= IORESOURCE_MEM,
	},
#endif
};

static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
};

#ifdef CONFIG_ARCH_FS_PXA255
static struct resource dm9000_resources[] = {
  #ifdef CONFIG_ARCH_FS_PXA255_V30
	[0] = {
		.start	= 0x04000330,
		.end	= 0x04000fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_GPIO(3),
		.end	= IRQ_GPIO(3),
		.flags	= IORESOURCE_IRQ,
	},
  #else
	[0] = {
		.start	= 0x0c000300,
		.end	= 0x0c000fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_GPIO(7),
		.end	= IRQ_GPIO(7),
		.flags	= IORESOURCE_IRQ,
	},
  #endif
};

static struct platform_device dm9000_device = {
	.name		= "dmfe",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(dm9000_resources),
	.resource	= dm9000_resources,
};

static struct resource dm9000_resources1[] = {
	[0] = {
		.start	= 0x0c001310,
		.end	= 0x0c001fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_GPIO(14),
		.end	= IRQ_GPIO(14),
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device dm9000_device1 = {
	.name		= "dmfe1",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(dm9000_resources1),
	.resource	= dm9000_resources1,
};

static u64 uhc_dma_mask = ~(u64)0;

static struct resource sl811_resources[] = {
	[0] = {
		.start	= 0x04700000,
		.end	= 0x047fffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_GPIO(22),
		.end	= IRQ_GPIO(22),
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device sl811_device = {
	.name		  = "sl811-ohci",
	.id		  = 0,
	.dev		  = {
		.dma_mask	   = &uhc_dma_mask,
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources	  = 2,
	.resource	  = sl811_resources,
};
#endif

static struct platform_device *devices[] __initdata = {
#ifndef	CONFIG_ARCH_FS_PXA255
	&sa1111_device,
#endif
	&smc91x_device,
#ifdef	CONFIG_ARCH_FS_PXA255
	&sl811_device,
	&dm9000_device,
	&dm9000_device1,
#endif
};

static void backlight_power(int on);

static struct pxafb_mach_info sharp_lm8v31 __initdata = {
#ifdef CONFIG_FB_PXA_PRIME_VIEW_640X480
	.pixclock	= 1600,	//unit = 10KHz
	.xres		= 640,
	.yres		= 480,
	.bpp		= 16,
	.hsync_len	= 10,
	.left_margin	= 132,
	.right_margin	= 10,
	.vsync_len	= 6,
	.upper_margin	= 10,
	.lower_margin	= 10,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.cmap_greyscale	= 0,
	.cmap_inverse	= 0,
	.cmap_static	= 0,
	.lccr0		= LCCR0_Act,
	.lccr3		= LCCR3_VSP | LCCR3_HSP | LCCR3_Acb(255),
	.pxafb_backlight_power	= backlight_power,
#elif defined CONFIG_FB_PXA_SHARP_640X480
	.pixclock	= 1600,	//unit = 10KHz
	.xres		= 640,
	.yres		= 480,
	.bpp		= 16,
	.hsync_len	= 8,
	.left_margin	= 24,
	.right_margin	= 8,
	.vsync_len	= 2,
	.upper_margin	= 34,
	.lower_margin	= 4,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.cmap_greyscale	= 0,
	.cmap_inverse	= 0,
	.cmap_static	= 0,
	.lccr0		= LCCR0_Act,
	.lccr3		= LCCR3_Acb(255),
	.pxafb_backlight_power	= backlight_power,
#elif defined CONFIG_FB_PXA_SHARP_240X320
	.pixclock	= 500,	//unit = 10KHz
	.xres		= 240,
	.yres		= 320,
	.bpp		= 16,
	.hsync_len	= 2,
	.left_margin	= 10,
	.right_margin	= 10,
	.vsync_len	= 2,
	.upper_margin	= 5,
	.lower_margin	= 5,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.cmap_greyscale	= 0,
	.cmap_inverse	= 0,
	.cmap_static	= 0,
	.lccr0		= LCCR0_Act,
	.lccr3		= LCCR3_PCP | LCCR3_Acb(255),
	.pxafb_backlight_power	= backlight_power,
#else
	.pixclock	= 270000,
	.xres		= 640,
	.yres		= 480,
	.bpp		= 16,
	.hsync_len	= 1,
	.left_margin	= 3,
	.right_margin	= 3,
	.vsync_len	= 1,
	.upper_margin	= 0,
	.lower_margin	= 0,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.cmap_greyscale	= 0,
	.cmap_inverse	= 0,
	.cmap_static	= 0,
	.lccr0		= LCCR0_SDS,
	.lccr3		= LCCR3_PCP | LCCR3_Acb(255),
#endif
};

static __u8  backlight_on = 0;
static __u8  backlight_duty = 80;
//static __u16 backlight_period = 99;
#define	backlight_period	100

#define	BKLT_LED_CTRL

#if defined CONFIG_LEDS && defined BKLT_LED_CTRL
#include <asm/leds.h>
#define	LED_BKLT_ON	leds_event(led_red_on)
#define	LED_BKLT_OFF	leds_event(led_red_off)
#else
#define	LED_BKLT_ON
#define	LED_BKLT_OFF
#endif

static void backlight_power(int on)
{
	//printk("set backlight %s, period=%d, duty=%d\n", on?"on":"off", backlight_period, backlight_duty);
	backlight_on = on;
	if(on) {
		//printk(KERN_ERR "Backlight on\n");
		CKEN |= CKEN1_PWM1;
		pxa_gpio_mode(GPIO17_PWM1_MD);

		PWM_PWDUTY1 = (backlight_duty*backlight_period)/100;
		PWM_PERVAL1 = backlight_period-1;
		PWM_CTRL1 = (0<<6)|59;
		LED_BKLT_ON;
	} else {
		//printk(KERN_ERR "Backlight off\n");
		//backlight_duty = PWM_PWDUTY1;
		//backlight_period = PWM_PERVAL1;
		PWM_PWDUTY1 = 0;
		PWM_PERVAL1 = 0;
		CKEN &= ~CKEN1_PWM1;
		LED_BKLT_OFF;
	}
}

#ifdef	CONFIG_PROC_FS
#include <linux/proc_fs.h>
#include <asm/uaccess.h>

static int backlight_proc_read (
	char			*page,
	char			**start,
	off_t			off,
	int 			count,
	int 			*eof,
	void			*data)
{
	int  len = 0;

	len += sprintf(page+len, "Backlight duty = %d%%\n", backlight_duty);
	*start = page+off;
	len -= off;
	if(len<=count)
		*eof = 1;
	else
		len = count;
	if(len<0)
		len = 0;

	return len;

}

static int backlight_proc_write (
        struct file		*file,
        const char		__user *buffer,
        unsigned long		count,
        void			*data)
{
	char tmp[10];
	int i;

	if(count>10)
		count = 10;
	if (copy_from_user(tmp, buffer, count))
		return -EFAULT;
	if(tmp[0]<'1'||tmp[0]>'9')
		return -EINVAL;
	i = tmp[0]-'0';
	
	if(tmp[1]<'0'||tmp[1]>'9')
		goto set_end;
	i *= 10;
	i += tmp[1]-'0';
	
	if(tmp[2]<'0'||tmp[2]>'9')
		goto set_end;
	i *= 10;
	i += tmp[2]-'0';

set_end:
	if(i>100)
		i = 100;
	if(backlight_duty!=i) {
		backlight_duty = i;
		if(backlight_on) {
			unsigned long flags;
			local_irq_save(flags);
			backlight_power(1);
			local_irq_restore(flags);
		}
		//printk("set backlight %d%%\n", i);
	}
	return count;
}
#endif

static void bklt_proc_init(void)
{
	struct proc_dir_entry *entry = NULL;

	/* are these acceptable values? */
	entry = create_proc_entry("backlight", S_IFREG|S_IRUGO|S_IWUSR, 
			  &proc_root);

	if (!entry)
		printk(KERN_ERR "unable to create /proc/backlight entry\n");		
	else {
		entry->read_proc = backlight_proc_read;
		entry->write_proc = backlight_proc_write;
	}
}

static void __init lubbock_init(void)
{
	pxa_set_udc_info(&udc_info);
	set_pxa_fb_info(&sharp_lm8v31);
	(void) platform_add_devices(devices, ARRAY_SIZE(devices));
#ifdef	CONFIG_ARCH_FS_PXA255
	pxa_gpio_mode(0|GPIO_IN);		//key 0
	pxa_gpio_mode(1|GPIO_IN);		//key 1
	pxa_gpio_mode(4|GPIO_OUT);		//time led
	pxa_gpio_mode(5|GPIO_OUT);		//busy led
	//pxa_gpio_mode(GPIO10_RTCCLK_MD);	//one 32khz plus pulse occured per second
	pxa_gpio_mode(21|GPIO_IN);		//udc connect
  #ifdef CONFIG_ARCH_FS_PXA255_V30
	pxa_gpio_mode(26|GPIO_IN);		//key 2
	pxa_gpio_mode(27|GPIO_IN);		//key 3 & udc connect detect
	pxa_gpio_mode(81|GPIO_OUT);		//amber led & fir enable/disable
	pxa_gpio_mode(82|GPIO_OUT);		//green led
	pxa_gpio_mode(83|GPIO_OUT);		//red led & backlight enable/disable
	pxa_gpio_mode(84|GPIO_OUT);		//blue led
  #else
	pxa_gpio_mode(10|GPIO_OUT);		//blue led
	pxa_gpio_mode(11|GPIO_OUT);		//green led
	pxa_gpio_mode(12|GPIO_OUT);		//amber led & fir enable/disable
	pxa_gpio_mode(26|GPIO_OUT);		//red led & backlight enable/disable
	pxa_gpio_mode(84|GPIO_IN);		//udc connect detect
	pxa_gpio_mode(22|GPIO_IN);		//sl811hs irq
  #endif
#endif
	bklt_proc_init();
}

#ifndef	CONFIG_ARCH_FS_PXA255
static struct map_desc lubbock_io_desc[] __initdata = {
  { LUBBOCK_FPGA_VIRT, LUBBOCK_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
};
#endif

static void __init lubbock_map_io(void)
{
	pxa_map_io();
#ifndef	CONFIG_ARCH_FS_PXA255
	iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
#endif

	/* This enables the BTUART */
	pxa_gpio_mode(GPIO42_BTRXD_MD);
	pxa_gpio_mode(GPIO43_BTTXD_MD);
	pxa_gpio_mode(GPIO44_BTCTS_MD);
	pxa_gpio_mode(GPIO45_BTRTS_MD);

	/* This is for the SMC chip select */
	pxa_gpio_mode(GPIO79_nCS_3_MD);

	/* setup sleep mode values */
	PWER  = 0x00000002;	//check GP1 falling edge
	PFER  = 0x00000002;
	PRER  = 0x00000000;
#ifdef CONFIG_ARCH_FS_PXA255
	PGSR0 = 0x0C009CB0;
	PGSR1 = 0x003F0202;
	PGSR2 = 0x0001C000;
#else
	PGSR0 = 0x00008000;
	PGSR1 = 0x003F0202;
	PGSR2 = 0x0001C000;
#endif
//	PCFR |= PCFR_OPDE;
	PCFR = PCFR_OPDE;
}

MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
	MAINTAINER("MontaVista Software Inc.")
	BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
	BOOT_PARAMS(0xa0000100)
	MAPIO(lubbock_map_io)
	INITIRQ(lubbock_init_irq)
	INITTIME(pxa_init_time)
	INIT_MACHINE(lubbock_init)
MACHINE_END