/*
   * linux/arch/arm/mach-pxa/cm-x2xx.c
   *
   * Copyright (C) 2008 CompuLab, Ltd.
   * Mike Rapoport <mike@compulab.co.il>
   *
   * 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/platform_device.h>
  #include <linux/syscore_ops.h>
  #include <linux/irq.h>
  #include <linux/gpio.h>
  
  #include <linux/dm9000.h>
  #include <linux/leds.h>
  
  #include <asm/mach/arch.h>
  #include <asm/mach-types.h>
  #include <asm/mach/map.h>
  
  #include <mach/pxa25x.h>
  #undef GPIO24_SSP1_SFRM
  #include <mach/pxa27x.h>
  #include <mach/audio.h>
  #include <linux/platform_data/video-pxafb.h>
  #include <mach/smemc.h>
  
  #include <asm/hardware/it8152.h>
  
  #include "generic.h"
  #include "cm-x2xx-pci.h"
  
  extern void cmx255_init(void);
  extern void cmx270_init(void);
  
  /* reserve IRQs for IT8152 */
  #define CMX2XX_NR_IRQS		(IRQ_BOARD_START + 40)
  
  /* virtual addresses for statically mapped regions */
  #define CMX2XX_VIRT_BASE	(void __iomem *)(0xe8000000)
  #define CMX2XX_IT8152_VIRT	(CMX2XX_VIRT_BASE)
  
  /* physical address if local-bus attached devices */
  #define CMX255_DM9000_PHYS_BASE (PXA_CS1_PHYS + (8 << 22))
  #define CMX270_DM9000_PHYS_BASE	(PXA_CS1_PHYS + (6 << 22))
  
  /* leds */
  #define CMX255_GPIO_RED		(27)
  #define CMX255_GPIO_GREEN	(32)
  #define CMX270_GPIO_RED		(93)
  #define CMX270_GPIO_GREEN	(94)
  
  /* GPIO IRQ usage */
  #define GPIO22_ETHIRQ		(22)
  #define GPIO10_ETHIRQ		(10)
  #define CMX255_GPIO_IT8152_IRQ	(0)
  #define CMX270_GPIO_IT8152_IRQ	(22)
  
  #define CMX255_ETHIRQ		PXA_GPIO_TO_IRQ(GPIO22_ETHIRQ)
  #define CMX270_ETHIRQ		PXA_GPIO_TO_IRQ(GPIO10_ETHIRQ)
  
  #if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
  static struct resource cmx255_dm9000_resource[] = {
  	[0] = {
  		.start = CMX255_DM9000_PHYS_BASE,
  		.end   = CMX255_DM9000_PHYS_BASE + 3,
  		.flags = IORESOURCE_MEM,
  	},
  	[1] = {
  		.start = CMX255_DM9000_PHYS_BASE + 4,
  		.end   = CMX255_DM9000_PHYS_BASE + 4 + 500,
  		.flags = IORESOURCE_MEM,
  	},
  	[2] = {
  		.start = CMX255_ETHIRQ,
  		.end   = CMX255_ETHIRQ,
  		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  	}
  };
  
  static struct resource cmx270_dm9000_resource[] = {
  	[0] = {
  		.start = CMX270_DM9000_PHYS_BASE,
  		.end   = CMX270_DM9000_PHYS_BASE + 3,
  		.flags = IORESOURCE_MEM,
  	},
  	[1] = {
  		.start = CMX270_DM9000_PHYS_BASE + 8,
  		.end   = CMX270_DM9000_PHYS_BASE + 8 + 500,
  		.flags = IORESOURCE_MEM,
  	},
  	[2] = {
  		.start = CMX270_ETHIRQ,
  		.end   = CMX270_ETHIRQ,
  		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  	}
  };
  
  static struct dm9000_plat_data cmx270_dm9000_platdata = {
  	.flags		= DM9000_PLATF_32BITONLY | DM9000_PLATF_NO_EEPROM,
  };
  
  static struct platform_device cmx2xx_dm9000_device = {
  	.name		= "dm9000",
  	.id		= 0,
  	.num_resources	= ARRAY_SIZE(cmx270_dm9000_resource),
  	.dev		= {
  		.platform_data = &cmx270_dm9000_platdata,
  	}
  };
  
  static void __init cmx2xx_init_dm9000(void)
  {
  	if (cpu_is_pxa25x())
  		cmx2xx_dm9000_device.resource = cmx255_dm9000_resource;
  	else
  		cmx2xx_dm9000_device.resource = cmx270_dm9000_resource;
  	platform_device_register(&cmx2xx_dm9000_device);
  }
  #else
  static inline void cmx2xx_init_dm9000(void) {}
  #endif
  
  /* UCB1400 touchscreen controller */
  #if defined(CONFIG_TOUCHSCREEN_UCB1400) || defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
  static struct platform_device cmx2xx_ts_device = {
  	.name		= "ucb1400_core",
  	.id		= -1,
  };
  
  static void __init cmx2xx_init_touchscreen(void)
  {
  	platform_device_register(&cmx2xx_ts_device);
  }
  #else
  static inline void cmx2xx_init_touchscreen(void) {}
  #endif
  
  /* CM-X270 LEDs */
  #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
  static struct gpio_led cmx2xx_leds[] = {
  	[0] = {
  		.name = "cm-x2xx:red",
  		.default_trigger = "nand-disk",
  		.active_low = 1,
  	},
  	[1] = {
  		.name = "cm-x2xx:green",
  		.default_trigger = "heartbeat",
  		.active_low = 1,
  	},
  };
  
  static struct gpio_led_platform_data cmx2xx_gpio_led_pdata = {
  	.num_leds = ARRAY_SIZE(cmx2xx_leds),
  	.leds = cmx2xx_leds,
  };
  
  static struct platform_device cmx2xx_led_device = {
  	.name		= "leds-gpio",
  	.id		= -1,
  	.dev		= {
  		.platform_data = &cmx2xx_gpio_led_pdata,
  	},
  };
  
  static void __init cmx2xx_init_leds(void)
  {
  	if (cpu_is_pxa25x()) {
  		cmx2xx_leds[0].gpio = CMX255_GPIO_RED;
  		cmx2xx_leds[1].gpio = CMX255_GPIO_GREEN;
  	} else {
  		cmx2xx_leds[0].gpio = CMX270_GPIO_RED;
  		cmx2xx_leds[1].gpio = CMX270_GPIO_GREEN;
  	}
  	platform_device_register(&cmx2xx_led_device);
  }
  #else
  static inline void cmx2xx_init_leds(void) {}
  #endif
  
  #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
  /*
    Display definitions
    keep these for backwards compatibility, although symbolic names (as
    e.g. in lpd270.c) looks better
  */
  #define MTYPE_STN320x240	0
  #define MTYPE_TFT640x480	1
  #define MTYPE_CRT640x480	2
  #define MTYPE_CRT800x600	3
  #define MTYPE_TFT320x240	6
  #define MTYPE_STN640x480	7
  
  static struct pxafb_mode_info generic_stn_320x240_mode = {
  	.pixclock	= 76923,
  	.bpp		= 8,
  	.xres		= 320,
  	.yres		= 240,
  	.hsync_len	= 3,
  	.vsync_len	= 2,
  	.left_margin	= 3,
  	.upper_margin	= 0,
  	.right_margin	= 3,
  	.lower_margin	= 0,
  	.sync		= (FB_SYNC_HOR_HIGH_ACT |
  			   FB_SYNC_VERT_HIGH_ACT),
  	.cmap_greyscale = 0,
  };
  
  static struct pxafb_mach_info generic_stn_320x240 = {
  	.modes		= &generic_stn_320x240_mode,
  	.num_modes	= 1,
  	.lcd_conn	= LCD_COLOR_STN_8BPP | LCD_PCLK_EDGE_FALL |\
  			  LCD_AC_BIAS_FREQ(0xff),
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  };
  
  static struct pxafb_mode_info generic_tft_640x480_mode = {
  	.pixclock	= 38461,
  	.bpp		= 8,
  	.xres		= 640,
  	.yres		= 480,
  	.hsync_len	= 60,
  	.vsync_len	= 2,
  	.left_margin	= 70,
  	.upper_margin	= 10,
  	.right_margin	= 70,
  	.lower_margin	= 5,
  	.sync		= 0,
  	.cmap_greyscale = 0,
  };
  
  static struct pxafb_mach_info generic_tft_640x480 = {
  	.modes		= &generic_tft_640x480_mode,
  	.num_modes	= 1,
  	.lcd_conn	= LCD_COLOR_TFT_8BPP | LCD_PCLK_EDGE_FALL |\
  			  LCD_AC_BIAS_FREQ(0xff),
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  };
  
  static struct pxafb_mode_info generic_crt_640x480_mode = {
  	.pixclock	= 38461,
  	.bpp		= 8,
  	.xres		= 640,
  	.yres		= 480,
  	.hsync_len	= 63,
  	.vsync_len	= 2,
  	.left_margin	= 81,
  	.upper_margin	= 33,
  	.right_margin	= 16,
  	.lower_margin	= 10,
  	.sync		= (FB_SYNC_HOR_HIGH_ACT |
  			   FB_SYNC_VERT_HIGH_ACT),
  	.cmap_greyscale = 0,
  };
  
  static struct pxafb_mach_info generic_crt_640x480 = {
  	.modes		= &generic_crt_640x480_mode,
  	.num_modes	= 1,
  	.lcd_conn	= LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  };
  
  static struct pxafb_mode_info generic_crt_800x600_mode = {
  	.pixclock	= 28846,
  	.bpp		= 8,
  	.xres		= 800,
  	.yres	  	= 600,
  	.hsync_len	= 63,
  	.vsync_len	= 2,
  	.left_margin	= 26,
  	.upper_margin	= 21,
  	.right_margin	= 26,
  	.lower_margin	= 11,
  	.sync		= (FB_SYNC_HOR_HIGH_ACT |
  			   FB_SYNC_VERT_HIGH_ACT),
  	.cmap_greyscale = 0,
  };
  
  static struct pxafb_mach_info generic_crt_800x600 = {
  	.modes		= &generic_crt_800x600_mode,
  	.num_modes	= 1,
  	.lcd_conn	= LCD_COLOR_TFT_8BPP | LCD_AC_BIAS_FREQ(0xff),
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  };
  
  static struct pxafb_mode_info generic_tft_320x240_mode = {
  	.pixclock	= 134615,
  	.bpp		= 16,
  	.xres		= 320,
  	.yres		= 240,
  	.hsync_len	= 63,
  	.vsync_len	= 7,
  	.left_margin	= 75,
  	.upper_margin	= 0,
  	.right_margin	= 15,
  	.lower_margin	= 15,
  	.sync		= 0,
  	.cmap_greyscale = 0,
  };
  
  static struct pxafb_mach_info generic_tft_320x240 = {
  	.modes		= &generic_tft_320x240_mode,
  	.num_modes	= 1,
  	.lcd_conn	= LCD_COLOR_TFT_16BPP | LCD_AC_BIAS_FREQ(0xff),
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  };
  
  static struct pxafb_mode_info generic_stn_640x480_mode = {
  	.pixclock	= 57692,
  	.bpp		= 8,
  	.xres		= 640,
  	.yres		= 480,
  	.hsync_len	= 4,
  	.vsync_len	= 2,
  	.left_margin	= 10,
  	.upper_margin	= 5,
  	.right_margin	= 10,
  	.lower_margin	= 5,
  	.sync		= (FB_SYNC_HOR_HIGH_ACT |
  			   FB_SYNC_VERT_HIGH_ACT),
  	.cmap_greyscale = 0,
  };
  
  static struct pxafb_mach_info generic_stn_640x480 = {
  	.modes		= &generic_stn_640x480_mode,
  	.num_modes	= 1,
  	.lcd_conn	= LCD_COLOR_STN_8BPP | LCD_AC_BIAS_FREQ(0xff),
  	.cmap_inverse	= 0,
  	.cmap_static	= 0,
  };
  
  static struct pxafb_mach_info *cmx2xx_display = &generic_crt_640x480;
  
  static int __init cmx2xx_set_display(char *str)
  {
  	int disp_type = simple_strtol(str, NULL, 0);
  	switch (disp_type) {
  	case MTYPE_STN320x240:
  		cmx2xx_display = &generic_stn_320x240;
  		break;
  	case MTYPE_TFT640x480:
  		cmx2xx_display = &generic_tft_640x480;
  		break;
  	case MTYPE_CRT640x480:
  		cmx2xx_display = &generic_crt_640x480;
  		break;
  	case MTYPE_CRT800x600:
  		cmx2xx_display = &generic_crt_800x600;
  		break;
  	case MTYPE_TFT320x240:
  		cmx2xx_display = &generic_tft_320x240;
  		break;
  	case MTYPE_STN640x480:
  		cmx2xx_display = &generic_stn_640x480;
  		break;
  	default: /* fallback to CRT 640x480 */
  		cmx2xx_display = &generic_crt_640x480;
  		break;
  	}
  	return 1;
  }
  
  /*
     This should be done really early to get proper configuration for
     frame buffer.
     Indeed, pxafb parameters can be used istead, but CM-X2XX bootloader
     has limitied line length for kernel command line, and also it will
     break compatibitlty with proprietary releases already in field.
  */
  __setup("monitor=", cmx2xx_set_display);
  
  static void __init cmx2xx_init_display(void)
  {
  	pxa_set_fb_info(NULL, cmx2xx_display);
  }
  #else
  static inline void cmx2xx_init_display(void) {}
  #endif
  
  #ifdef CONFIG_PM
  static unsigned long sleep_save_msc[10];
  
  static int cmx2xx_suspend(void)
  {
  	cmx2xx_pci_suspend();
  
  	/* save MSC registers */
  	sleep_save_msc[0] = __raw_readl(MSC0);
  	sleep_save_msc[1] = __raw_readl(MSC1);
  	sleep_save_msc[2] = __raw_readl(MSC2);
  
  	/* setup power saving mode registers */
  	PCFR = 0x0;
  	PSLR = 0xff400000;
  	PMCR  = 0x00000005;
  	PWER  = 0x80000000;
  	PFER  = 0x00000000;
  	PRER  = 0x00000000;
  	PGSR0 = 0xC0018800;
  	PGSR1 = 0x004F0002;
  	PGSR2 = 0x6021C000;
  	PGSR3 = 0x00020000;
  
  	return 0;
  }
  
  static void cmx2xx_resume(void)
  {
  	cmx2xx_pci_resume();
  
  	/* restore MSC registers */
  	__raw_writel(sleep_save_msc[0], MSC0);
  	__raw_writel(sleep_save_msc[1], MSC1);
  	__raw_writel(sleep_save_msc[2], MSC2);
  }
  
  static struct syscore_ops cmx2xx_pm_syscore_ops = {
  	.resume = cmx2xx_resume,
  	.suspend = cmx2xx_suspend,
  };
  
  static int __init cmx2xx_pm_init(void)
  {
  	register_syscore_ops(&cmx2xx_pm_syscore_ops);
  
  	return 0;
  }
  #else
  static int __init cmx2xx_pm_init(void) { return 0; }
  #endif
  
  #if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
  static void __init cmx2xx_init_ac97(void)
  {
  	pxa_set_ac97_info(NULL);
  }
  #else
  static inline void cmx2xx_init_ac97(void) {}
  #endif
  
  static void __init cmx2xx_init(void)
  {
  	pxa_set_ffuart_info(NULL);
  	pxa_set_btuart_info(NULL);
  	pxa_set_stuart_info(NULL);
  
  	cmx2xx_pm_init();
  
  	if (cpu_is_pxa25x())
  		cmx255_init();
  	else
  		cmx270_init();
  
  	cmx2xx_init_dm9000();
  	cmx2xx_init_display();
  	cmx2xx_init_ac97();
  	cmx2xx_init_touchscreen();
  	cmx2xx_init_leds();
  }
  
  static void __init cmx2xx_init_irq(void)
  {
  	if (cpu_is_pxa25x()) {
  		pxa25x_init_irq();
  		cmx2xx_pci_init_irq(CMX255_GPIO_IT8152_IRQ);
  	} else {
  		pxa27x_init_irq();
  		cmx2xx_pci_init_irq(CMX270_GPIO_IT8152_IRQ);
  	}
  }
  
  #ifdef CONFIG_PCI
  /* Map PCI companion statically */
  static struct map_desc cmx2xx_io_desc[] __initdata = {
  	[0] = { /* PCI bridge */
  		.virtual	= (unsigned long)CMX2XX_IT8152_VIRT,
  		.pfn		= __phys_to_pfn(PXA_CS4_PHYS),
  		.length		= SZ_64M,
  		.type		= MT_DEVICE
  	},
  };
  
  static void __init cmx2xx_map_io(void)
  {
  	if (cpu_is_pxa25x())
  		pxa25x_map_io();
  
  	if (cpu_is_pxa27x())
  		pxa27x_map_io();
  
  	iotable_init(cmx2xx_io_desc, ARRAY_SIZE(cmx2xx_io_desc));
  
  	it8152_base_address = CMX2XX_IT8152_VIRT;
  }
  #else
  static void __init cmx2xx_map_io(void)
  {
  	if (cpu_is_pxa25x())
  		pxa25x_map_io();
  
  	if (cpu_is_pxa27x())
  		pxa27x_map_io();
  }
  #endif
  
  MACHINE_START(ARMCORE, "Compulab CM-X2XX")
  	.atag_offset	= 0x100,
  	.map_io		= cmx2xx_map_io,
  	.nr_irqs	= CMX2XX_NR_IRQS,
  	.init_irq	= cmx2xx_init_irq,
  	/* NOTE: pxa25x_handle_irq() works on PXA27x w/o camera support */
  	.handle_irq	= pxa25x_handle_irq,
  	.init_time	= pxa_timer_init,
  	.init_machine	= cmx2xx_init,
  #ifdef CONFIG_PCI
  	.dma_zone_size	= SZ_64M,
  #endif
  	.restart	= pxa_restart,
  MACHINE_END