/*
   *  Copyright (C) 2000 Deep Blue Solutions Ltd
   *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   *  Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  #include <linux/gpio.h>
  #include <linux/platform_device.h>
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/map.h>
  #include <linux/mtd/partitions.h>
  #include <linux/mtd/physmap.h>
  #include <linux/i2c.h>
  #include <linux/irq.h>
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  #include <asm/mach/time.h>
  #include <asm/mach/map.h>
  
  #include "common.h"
  #include "devices-imx27.h"
  #include "hardware.h"
  #include "iomux-mx27.h"
  
  /*
   * Base address of PBC controller, CS4
   */
  #define PBC_BASE_ADDRESS        0xf4300000
  #define PBC_REG_ADDR(offset)    (void __force __iomem *) \
  		(PBC_BASE_ADDRESS + (offset))
  
  /* When the PBC address connection is fixed in h/w, defined as 1 */
  #define PBC_ADDR_SH             0
  
  /* Offsets for the PBC Controller register */
  /*
   * PBC Board version register offset
   */
  #define PBC_VERSION_REG         PBC_REG_ADDR(0x00000 >> PBC_ADDR_SH)
  /*
   * PBC Board control register 1 set address.
   */
  #define PBC_BCTRL1_SET_REG      PBC_REG_ADDR(0x00008 >> PBC_ADDR_SH)
  /*
   * PBC Board control register 1 clear address.
   */
  #define PBC_BCTRL1_CLEAR_REG    PBC_REG_ADDR(0x0000C >> PBC_ADDR_SH)
  
  /* PBC Board Control Register 1 bit definitions */
  #define PBC_BCTRL1_LCDON        0x0800	/* Enable the LCD */
  
  /* to determine the correct external crystal reference */
  #define CKIH_27MHZ_BIT_SET      (1 << 3)
  
  static const int mx27ads_pins[] __initconst = {
  	/* UART0 */
  	PE12_PF_UART1_TXD,
  	PE13_PF_UART1_RXD,
  	PE14_PF_UART1_CTS,
  	PE15_PF_UART1_RTS,
  	/* UART1 */
  	PE3_PF_UART2_CTS,
  	PE4_PF_UART2_RTS,
  	PE6_PF_UART2_TXD,
  	PE7_PF_UART2_RXD,
  	/* UART2 */
  	PE8_PF_UART3_TXD,
  	PE9_PF_UART3_RXD,
  	PE10_PF_UART3_CTS,
  	PE11_PF_UART3_RTS,
  	/* UART3 */
  	PB26_AF_UART4_RTS,
  	PB28_AF_UART4_TXD,
  	PB29_AF_UART4_CTS,
  	PB31_AF_UART4_RXD,
  	/* UART4 */
  	PB18_AF_UART5_TXD,
  	PB19_AF_UART5_RXD,
  	PB20_AF_UART5_CTS,
  	PB21_AF_UART5_RTS,
  	/* UART5 */
  	PB10_AF_UART6_TXD,
  	PB12_AF_UART6_CTS,
  	PB11_AF_UART6_RXD,
  	PB13_AF_UART6_RTS,
  	/* FEC */
  	PD0_AIN_FEC_TXD0,
  	PD1_AIN_FEC_TXD1,
  	PD2_AIN_FEC_TXD2,
  	PD3_AIN_FEC_TXD3,
  	PD4_AOUT_FEC_RX_ER,
  	PD5_AOUT_FEC_RXD1,
  	PD6_AOUT_FEC_RXD2,
  	PD7_AOUT_FEC_RXD3,
  	PD8_AF_FEC_MDIO,
  	PD9_AIN_FEC_MDC,
  	PD10_AOUT_FEC_CRS,
  	PD11_AOUT_FEC_TX_CLK,
  	PD12_AOUT_FEC_RXD0,
  	PD13_AOUT_FEC_RX_DV,
  	PD14_AOUT_FEC_RX_CLK,
  	PD15_AOUT_FEC_COL,
  	PD16_AIN_FEC_TX_ER,
  	PF23_AIN_FEC_TX_EN,
  	/* I2C2 */
  	PC5_PF_I2C2_SDA,
  	PC6_PF_I2C2_SCL,
  	/* FB */
  	PA5_PF_LSCLK,
  	PA6_PF_LD0,
  	PA7_PF_LD1,
  	PA8_PF_LD2,
  	PA9_PF_LD3,
  	PA10_PF_LD4,
  	PA11_PF_LD5,
  	PA12_PF_LD6,
  	PA13_PF_LD7,
  	PA14_PF_LD8,
  	PA15_PF_LD9,
  	PA16_PF_LD10,
  	PA17_PF_LD11,
  	PA18_PF_LD12,
  	PA19_PF_LD13,
  	PA20_PF_LD14,
  	PA21_PF_LD15,
  	PA22_PF_LD16,
  	PA23_PF_LD17,
  	PA24_PF_REV,
  	PA25_PF_CLS,
  	PA26_PF_PS,
  	PA27_PF_SPL_SPR,
  	PA28_PF_HSYNC,
  	PA29_PF_VSYNC,
  	PA30_PF_CONTRAST,
  	PA31_PF_OE_ACD,
  	/* OWIRE */
  	PE16_AF_OWIRE,
  	/* SDHC1*/
  	PE18_PF_SD1_D0,
  	PE19_PF_SD1_D1,
  	PE20_PF_SD1_D2,
  	PE21_PF_SD1_D3,
  	PE22_PF_SD1_CMD,
  	PE23_PF_SD1_CLK,
  	/* SDHC2*/
  	PB4_PF_SD2_D0,
  	PB5_PF_SD2_D1,
  	PB6_PF_SD2_D2,
  	PB7_PF_SD2_D3,
  	PB8_PF_SD2_CMD,
  	PB9_PF_SD2_CLK,
  };
  
  static const struct mxc_nand_platform_data
  mx27ads_nand_board_info __initconst = {
  	.width = 1,
  	.hw_ecc = 1,
  };
  
  /* ADS's NOR flash */
  static struct physmap_flash_data mx27ads_flash_data = {
  	.width = 2,
  };
  
  static struct resource mx27ads_flash_resource = {
  	.start = 0xc0000000,
  	.end = 0xc0000000 + 0x02000000 - 1,
  	.flags = IORESOURCE_MEM,
  
  };
  
  static struct platform_device mx27ads_nor_mtd_device = {
  	.name = "physmap-flash",
  	.id = 0,
  	.dev = {
  		.platform_data = &mx27ads_flash_data,
  	},
  	.num_resources = 1,
  	.resource = &mx27ads_flash_resource,
  };
  
  static const struct imxi2c_platform_data mx27ads_i2c1_data __initconst = {
  	.bitrate = 100000,
  };
  
  static struct i2c_board_info mx27ads_i2c_devices[] = {
  };
  
  void lcd_power(int on)
  {
  	if (on)
  		__raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_SET_REG);
  	else
  		__raw_writew(PBC_BCTRL1_LCDON, PBC_BCTRL1_CLEAR_REG);
  }
  
  static struct imx_fb_videomode mx27ads_modes[] = {
  	{
  		.mode = {
  			.name		= "Sharp-LQ035Q7",
  			.refresh	= 60,
  			.xres		= 240,
  			.yres		= 320,
  			.pixclock	= 188679, /* in ps (5.3MHz) */
  			.hsync_len	= 1,
  			.left_margin	= 9,
  			.right_margin	= 16,
  			.vsync_len	= 1,
  			.upper_margin	= 7,
  			.lower_margin	= 9,
  		},
  		.bpp		= 16,
  		.pcr		= 0xFB008BC0,
  	},
  };
  
  static const struct imx_fb_platform_data mx27ads_fb_data __initconst = {
  	.mode = mx27ads_modes,
  	.num_modes = ARRAY_SIZE(mx27ads_modes),
  
  	/*
  	 * - HSYNC active high
  	 * - VSYNC active high
  	 * - clk notenabled while idle
  	 * - clock inverted
  	 * - data not inverted
  	 * - data enable low active
  	 * - enable sharp mode
  	 */
  	.pwmr		= 0x00A903FF,
  	.lscr1		= 0x00120300,
  	.dmacr		= 0x00020010,
  
  	.lcd_power	= lcd_power,
  };
  
  static int mx27ads_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
  			      void *data)
  {
  	return request_irq(gpio_to_irq(IMX_GPIO_NR(5, 21)), detect_irq,
  			   IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
  }
  
  static int mx27ads_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  			      void *data)
  {
  	return request_irq(gpio_to_irq(IMX_GPIO_NR(2, 7)), detect_irq,
  			   IRQF_TRIGGER_RISING, "sdhc2-card-detect", data);
  }
  
  static void mx27ads_sdhc1_exit(struct device *dev, void *data)
  {
  	free_irq(gpio_to_irq(IMX_GPIO_NR(5, 21)), data);
  }
  
  static void mx27ads_sdhc2_exit(struct device *dev, void *data)
  {
  	free_irq(gpio_to_irq(IMX_GPIO_NR(2, 7)), data);
  }
  
  static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
  	.init = mx27ads_sdhc1_init,
  	.exit = mx27ads_sdhc1_exit,
  };
  
  static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
  	.init = mx27ads_sdhc2_init,
  	.exit = mx27ads_sdhc2_exit,
  };
  
  static struct platform_device *platform_devices[] __initdata = {
  	&mx27ads_nor_mtd_device,
  };
  
  static const struct imxuart_platform_data uart_pdata __initconst = {
  	.flags = IMXUART_HAVE_RTSCTS,
  };
  
  static void __init mx27ads_board_init(void)
  {
  	imx27_soc_init();
  
  	mxc_gpio_setup_multiple_pins(mx27ads_pins, ARRAY_SIZE(mx27ads_pins),
  			"mx27ads");
  
  	imx27_add_imx_uart0(&uart_pdata);
  	imx27_add_imx_uart1(&uart_pdata);
  	imx27_add_imx_uart2(&uart_pdata);
  	imx27_add_imx_uart3(&uart_pdata);
  	imx27_add_imx_uart4(&uart_pdata);
  	imx27_add_imx_uart5(&uart_pdata);
  	imx27_add_mxc_nand(&mx27ads_nand_board_info);
  
  	/* only the i2c master 1 is used on this CPU card */
  	i2c_register_board_info(1, mx27ads_i2c_devices,
  				ARRAY_SIZE(mx27ads_i2c_devices));
  	imx27_add_imx_i2c(1, &mx27ads_i2c1_data);
  	imx27_add_imx_fb(&mx27ads_fb_data);
  	imx27_add_mxc_mmc(0, &sdhc1_pdata);
  	imx27_add_mxc_mmc(1, &sdhc2_pdata);
  
  	imx27_add_fec(NULL);
  	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
  	imx27_add_mxc_w1();
  }
  
  static void __init mx27ads_timer_init(void)
  {
  	unsigned long fref = 26000000;
  
  	if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
  		fref = 27000000;
  
  	mx27_clocks_init(fref);
  }
  
  static struct map_desc mx27ads_io_desc[] __initdata = {
  	{
  		.virtual = PBC_BASE_ADDRESS,
  		.pfn = __phys_to_pfn(MX27_CS4_BASE_ADDR),
  		.length = SZ_1M,
  		.type = MT_DEVICE,
  	},
  };
  
  static void __init mx27ads_map_io(void)
  {
  	mx27_map_io();
  	iotable_init(mx27ads_io_desc, ARRAY_SIZE(mx27ads_io_desc));
  }
  
  MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
  	/* maintainer: Freescale Semiconductor, Inc. */
  	.atag_offset = 0x100,
  	.map_io = mx27ads_map_io,
  	.init_early = imx27_init_early,
  	.init_irq = mx27_init_irq,
  	.handle_irq = imx27_handle_irq,
  	.init_time	= mx27ads_timer_init,
  	.init_machine = mx27ads_board_init,
  	.restart	= mxc_restart,
  MACHINE_END