/*
   *  linux/arch/arm/mach-pxa/idp.c
   *
   *  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.
   *
   *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
   *
   *  2001-09-13: Cliff Brake <cbrake@accelent.com>
   *              Initial code
   *
   *  2005-02-15: Cliff Brake <cliff.brake@gmail.com>
   *  		<http://www.vibren.com> <http://bec-systems.com>
   *              Updated for 2.6 kernel
   *
   */
  
  #include <linux/init.h>
  #include <linux/interrupt.h>
  #include <linux/irq.h>
  #include <linux/platform_device.h>
  #include <linux/fb.h>
  
  #include <asm/setup.h>
  #include <asm/memory.h>
  #include <asm/mach-types.h>
  #include <mach/hardware.h>
  #include <asm/irq.h>
  
  #include <asm/mach/arch.h>
  #include <asm/mach/map.h>
  
  #include <mach/pxa25x.h>
  #include <mach/idp.h>
  #include <linux/platform_data/video-pxafb.h>
  #include <mach/bitfield.h>
  #include <linux/platform_data/mmc-pxamci.h>
  
  #include "generic.h"
  #include "devices.h"
  
  /* TODO:
   * - add pxa2xx_audio_ops_t device structure
   * - Ethernet interrupt
   */
  
  static unsigned long idp_pin_config[] __initdata = {
  	/* LCD */
  	GPIOxx_LCD_DSTN_16BPP,
  
  	/* BTUART */
  	GPIO42_BTUART_RXD,
  	GPIO43_BTUART_TXD,
  	GPIO44_BTUART_CTS,
  	GPIO45_BTUART_RTS,
  
  	/* STUART */
  	GPIO46_STUART_RXD,
  	GPIO47_STUART_TXD,
  
  	/* MMC */
  	GPIO6_MMC_CLK,
  	GPIO8_MMC_CS0,
  
  	/* Ethernet */
  	GPIO33_nCS_5,	/* Ethernet CS */
  	GPIO4_GPIO,	/* Ethernet IRQ */
  };
  
  static struct resource smc91x_resources[] = {
  	[0] = {
  		.start	= (IDP_ETH_PHYS + 0x300),
  		.end	= (IDP_ETH_PHYS + 0xfffff),
  		.flags	= IORESOURCE_MEM,
  	},
  	[1] = {
  		.start	= PXA_GPIO_TO_IRQ(4),
  		.end	= PXA_GPIO_TO_IRQ(4),
  		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  	}
  };
  
  static struct platform_device smc91x_device = {
  	.name		= "smc91x",
  	.id		= 0,
  	.num_resources	= ARRAY_SIZE(smc91x_resources),
  	.resource	= smc91x_resources,
  };
  
  static void idp_backlight_power(int on)
  {
  	if (on) {
  		IDP_CPLD_LCD |= (1<<1);
  	} else {
  		IDP_CPLD_LCD &= ~(1<<1);
  	}
  }
  
  static void idp_vlcd(int on)
  {
  	if (on) {
  		IDP_CPLD_LCD |= (1<<2);
  	} else {
  		IDP_CPLD_LCD &= ~(1<<2);
  	}
  }
  
  static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
  {
  	if (on) {
  		IDP_CPLD_LCD |= (1<<0);
  	} else {
  		IDP_CPLD_LCD &= ~(1<<0);
  	}
  
  	/* call idp_vlcd for now as core driver does not support
  	 * both power and vlcd hooks.  Note, this is not technically
  	 * the correct sequence, but seems to work.  Disclaimer:
  	 * this may eventually damage the display.
  	 */
  
  	idp_vlcd(on);
  }
  
  static struct pxafb_mode_info sharp_lm8v31_mode = {
  	.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,
  };
  
  static struct pxafb_mach_info sharp_lm8v31 = {
  	.modes          = &sharp_lm8v31_mode,
  	.num_modes      = 1,
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  	.lcd_conn	= LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
  			  LCD_AC_BIAS_FREQ(255),
  	.pxafb_backlight_power = &idp_backlight_power,
  	.pxafb_lcd_power = &idp_lcd_power
  };
  
  static struct pxamci_platform_data idp_mci_platform_data = {
  	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
  	.gpio_card_detect	= -1,
  	.gpio_card_ro		= -1,
  	.gpio_power		= -1,
  };
  
  static void __init idp_init(void)
  {
  	printk("idp_init()
  ");
  
  	pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
  	pxa_set_ffuart_info(NULL);
  	pxa_set_btuart_info(NULL);
  	pxa_set_stuart_info(NULL);
  
  	platform_device_register(&smc91x_device);
  	//platform_device_register(&mst_audio_device);
  	pxa_set_fb_info(NULL, &sharp_lm8v31);
  	pxa_set_mci_info(&idp_mci_platform_data);
  }
  
  static struct map_desc idp_io_desc[] __initdata = {
    	{
  		.virtual	=  IDP_COREVOLT_VIRT,
  		.pfn		= __phys_to_pfn(IDP_COREVOLT_PHYS),
  		.length		= IDP_COREVOLT_SIZE,
  		.type		= MT_DEVICE
  	}, {
  		.virtual	=  IDP_CPLD_VIRT,
  		.pfn		= __phys_to_pfn(IDP_CPLD_PHYS),
  		.length		= IDP_CPLD_SIZE,
  		.type		= MT_DEVICE
  	}
  };
  
  static void __init idp_map_io(void)
  {
  	pxa25x_map_io();
  	iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
  }
  
  /* LEDs */
  #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
  struct idp_led {
  	struct led_classdev     cdev;
  	u8                      mask;
  };
  
  /*
   * The triggers lines up below will only be used if the
   * LED triggers are compiled in.
   */
  static const struct {
  	const char *name;
  	const char *trigger;
  } idp_leds[] = {
  	{ "idp:green", "heartbeat", },
  	{ "idp:red", "cpu0", },
  };
  
  static void idp_led_set(struct led_classdev *cdev,
  		enum led_brightness b)
  {
  	struct idp_led *led = container_of(cdev,
  			struct idp_led, cdev);
  	u32 reg = IDP_CPLD_LED_CONTROL;
  
  	if (b != LED_OFF)
  		reg &= ~led->mask;
  	else
  		reg |= led->mask;
  
  	IDP_CPLD_LED_CONTROL = reg;
  }
  
  static enum led_brightness idp_led_get(struct led_classdev *cdev)
  {
  	struct idp_led *led = container_of(cdev,
  			struct idp_led, cdev);
  
  	return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
  }
  
  static int __init idp_leds_init(void)
  {
  	int i;
  
  	if (!machine_is_pxa_idp())
  		return -ENODEV;
  
  	for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
  		struct idp_led *led;
  
  		led = kzalloc(sizeof(*led), GFP_KERNEL);
  		if (!led)
  			break;
  
  		led->cdev.name = idp_leds[i].name;
  		led->cdev.brightness_set = idp_led_set;
  		led->cdev.brightness_get = idp_led_get;
  		led->cdev.default_trigger = idp_leds[i].trigger;
  
  		if (i == 0)
  			led->mask = IDP_HB_LED;
  		else
  			led->mask = IDP_BUSY_LED;
  
  		if (led_classdev_register(NULL, &led->cdev) < 0) {
  			kfree(led);
  			break;
  		}
  	}
  
  	return 0;
  }
  
  /*
   * Since we may have triggers on any subsystem, defer registration
   * until after subsystem_init.
   */
  fs_initcall(idp_leds_init);
  #endif
  
  MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
  	/* Maintainer: Vibren Technologies */
  	.map_io		= idp_map_io,
  	.nr_irqs	= PXA_NR_IRQS,
  	.init_irq	= pxa25x_init_irq,
  	.handle_irq	= pxa25x_handle_irq,
  	.init_time	= pxa_timer_init,
  	.init_machine	= idp_init,
  	.restart	= pxa_restart,
  MACHINE_END