/*
   * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   *
   * 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.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   * MA 02110-1301, USA.
   */
  
  #include <linux/gpio.h>
  #include <linux/irq.h>
  #include <linux/platform_device.h>
  #include <linux/can/platform/sja1000.h>
  
  #include <asm/mach/arch.h>
  
  #include "common.h"
  #include "devices-imx27.h"
  #include "hardware.h"
  #include "iomux-mx27.h"
  
  static const int pcm970_pins[] __initconst = {
  	/* SDHC */
  	PB4_PF_SD2_D0,
  	PB5_PF_SD2_D1,
  	PB6_PF_SD2_D2,
  	PB7_PF_SD2_D3,
  	PB8_PF_SD2_CMD,
  	PB9_PF_SD2_CLK,
  	/* display */
  	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,
  	/*
  	 * it seems the data line misses a pullup, so we must enable
  	 * the internal pullup as a local workaround
  	 */
  	PD17_PF_I2C_DATA | GPIO_PUEN,
  	PD18_PF_I2C_CLK,
  	/* Camera */
  	PB10_PF_CSI_D0,
  	PB11_PF_CSI_D1,
  	PB12_PF_CSI_D2,
  	PB13_PF_CSI_D3,
  	PB14_PF_CSI_D4,
  	PB15_PF_CSI_MCLK,
  	PB16_PF_CSI_PIXCLK,
  	PB17_PF_CSI_D5,
  	PB18_PF_CSI_D6,
  	PB19_PF_CSI_D7,
  	PB20_PF_CSI_VSYNC,
  	PB21_PF_CSI_HSYNC,
  };
  
  static int pcm970_sdhc2_get_ro(struct device *dev)
  {
  	return gpio_get_value(GPIO_PORTC + 28);
  }
  
  static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
  {
  	int ret;
  
  	ret = request_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), detect_irq,
  			  IRQF_TRIGGER_FALLING, "imx-mmc-detect", data);
  	if (ret)
  		return ret;
  
  	ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
  	if (ret) {
  		free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
  		return ret;
  	}
  
  	gpio_direction_input(GPIO_PORTC + 28);
  
  	return 0;
  }
  
  static void pcm970_sdhc2_exit(struct device *dev, void *data)
  {
  	free_irq(gpio_to_irq(IMX_GPIO_NR(3, 29)), data);
  	gpio_free(GPIO_PORTC + 28);
  }
  
  static const struct imxmmc_platform_data sdhc_pdata __initconst = {
  	.get_ro = pcm970_sdhc2_get_ro,
  	.init = pcm970_sdhc2_init,
  	.exit = pcm970_sdhc2_exit,
  };
  
  static struct imx_fb_videomode pcm970_modes[] = {
  	{
  		.mode = {
  			.name		= "Sharp-LQ035Q7",
  			.refresh	= 60,
  			.xres		= 240,
  			.yres		= 320,
  			.pixclock	= 188679, /* in ps (5.3MHz) */
  			.hsync_len	= 7,
  			.left_margin	= 5,
  			.right_margin	= 16,
  			.vsync_len	= 1,
  			.upper_margin	= 7,
  			.lower_margin	= 9,
  		},
  		/*
  		 * - HSYNC active high
  		 * - VSYNC active high
  		 * - clk notenabled while idle
  		 * - clock not inverted
  		 * - data not inverted
  		 * - data enable low active
  		 * - enable sharp mode
  		 */
  		.pcr		= 0xF00080C0,
  		.bpp		= 16,
  	}, {
  		.mode = {
  			.name		= "TX090",
  			.refresh	= 60,
  			.xres		= 240,
  			.yres		= 320,
  			.pixclock	= 38255,
  			.left_margin	= 144,
  			.right_margin	= 0,
  			.upper_margin	= 7,
  			.lower_margin	= 40,
  			.hsync_len	= 96,
  			.vsync_len	= 1,
  		},
  		/*
  		 * - HSYNC active low (1 << 22)
  		 * - VSYNC active low (1 << 23)
  		 * - clk notenabled while idle
  		 * - clock not inverted
  		 * - data not inverted
  		 * - data enable low active
  		 * - enable sharp mode
  		 */
  		.pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
  		.bpp = 32,
  	},
  };
  
  static const struct imx_fb_platform_data pcm038_fb_data __initconst = {
  	.mode = pcm970_modes,
  	.num_modes = ARRAY_SIZE(pcm970_modes),
  
  	.pwmr		= 0x00A903FF,
  	.lscr1		= 0x00120300,
  	.dmacr		= 0x00020010,
  };
  
  static struct resource pcm970_sja1000_resources[] = {
  	{
  		.start   = MX27_CS4_BASE_ADDR,
  		.end     = MX27_CS4_BASE_ADDR + 0x100 - 1,
  		.flags   = IORESOURCE_MEM,
  	}, {
  		/* irq number is run-time assigned */
  		.flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
  	},
  };
  
  static struct sja1000_platform_data pcm970_sja1000_platform_data = {
  	.osc_freq	= 16000000,
  	.ocr		= OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
  	.cdr		= CDR_CBP,
  };
  
  static struct platform_device pcm970_sja1000 = {
  	.name = "sja1000_platform",
  	.dev = {
  		.platform_data = &pcm970_sja1000_platform_data,
  	},
  	.resource = pcm970_sja1000_resources,
  	.num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
  };
  
  /*
   * system init for baseboard usage. Will be called by pcm038 init.
   *
   * Add platform devices present on this baseboard and init
   * them from CPU side as far as required to use them later on
   */
  void __init pcm970_baseboard_init(void)
  {
  	mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
  			"PCM970");
  
  	imx27_add_imx_fb(&pcm038_fb_data);
  	mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN);
  	imx27_add_mxc_mmc(1, &sdhc_pdata);
  	pcm970_sja1000_resources[1].start = gpio_to_irq(IMX_GPIO_NR(5, 19));
  	pcm970_sja1000_resources[1].end = gpio_to_irq(IMX_GPIO_NR(5, 19));
  	platform_device_register(&pcm970_sja1000);
  }