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cm-x300.c

/*
 * linux/arch/arm/mach-pxa/cm-x300.c
 *
 * Support for the CompuLab CM-X300 modules
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/platform_device.h>

#include <linux/gpio.h>
#include <linux/dm9000.h>
#include <linux/leds.h>

#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <mach/mfp-pxa300.h>

#include <mach/hardware.h>
#include <mach/gpio.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/ohci.h>
#include <mach/i2c.h>
#include <mach/pxa3xx_nand.h>

#include <asm/mach/map.h>

#include "generic.h"

#define CM_X300_ETH_PHYS      0x08000010

#define GPIO82_MMC2_IRQ       (82)
#define GPIO85_MMC2_WP        (85)

#define     CM_X300_MMC2_IRQ  IRQ_GPIO(GPIO82_MMC2_IRQ)

static mfp_cfg_t cm_x300_mfp_cfg[] __initdata = {
      /* LCD */
      GPIO54_LCD_LDD_0,
      GPIO55_LCD_LDD_1,
      GPIO56_LCD_LDD_2,
      GPIO57_LCD_LDD_3,
      GPIO58_LCD_LDD_4,
      GPIO59_LCD_LDD_5,
      GPIO60_LCD_LDD_6,
      GPIO61_LCD_LDD_7,
      GPIO62_LCD_LDD_8,
      GPIO63_LCD_LDD_9,
      GPIO64_LCD_LDD_10,
      GPIO65_LCD_LDD_11,
      GPIO66_LCD_LDD_12,
      GPIO67_LCD_LDD_13,
      GPIO68_LCD_LDD_14,
      GPIO69_LCD_LDD_15,
      GPIO72_LCD_FCLK,
      GPIO73_LCD_LCLK,
      GPIO74_LCD_PCLK,
      GPIO75_LCD_BIAS,

      /* BTUART */
      GPIO111_UART2_RTS,
      GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
      GPIO113_UART2_TXD,
      GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,

      /* STUART */
      GPIO109_UART3_TXD,
      GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,

      /* AC97 */
      GPIO23_AC97_nACRESET,
      GPIO24_AC97_SYSCLK,
      GPIO29_AC97_BITCLK,
      GPIO25_AC97_SDATA_IN_0,
      GPIO27_AC97_SDATA_OUT,
      GPIO28_AC97_SYNC,

      /* Keypad */
      GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
      GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
      GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
      GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
      GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
      GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
      GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
      GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
      GPIO121_KP_MKOUT_0,
      GPIO122_KP_MKOUT_1,
      GPIO123_KP_MKOUT_2,
      GPIO124_KP_MKOUT_3,
      GPIO125_KP_MKOUT_4,
      GPIO4_2_KP_MKOUT_5,

      /* MMC1 */
      GPIO3_MMC1_DAT0,
      GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
      GPIO5_MMC1_DAT2,
      GPIO6_MMC1_DAT3,
      GPIO7_MMC1_CLK,
      GPIO8_MMC1_CMD,   /* CMD0 for slot 0 */

      /* MMC2 */
      GPIO9_MMC2_DAT0,
      GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
      GPIO11_MMC2_DAT2,
      GPIO12_MMC2_DAT3,
      GPIO13_MMC2_CLK,
      GPIO14_MMC2_CMD,

      /* FFUART */
      GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
      GPIO31_UART1_TXD,
      GPIO32_UART1_CTS,
      GPIO37_UART1_RTS,
      GPIO33_UART1_DCD,
      GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
      GPIO35_UART1_RI,
      GPIO36_UART1_DTR,

      /* GPIOs */
      GPIO79_GPIO,                  /* LED */
      GPIO82_GPIO | MFP_PULL_HIGH,  /* MMC CD */
      GPIO85_GPIO,                  /* MMC WP */
      GPIO99_GPIO,                  /* Ethernet IRQ */
};

#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
static struct resource dm9000_resources[] = {
      [0] = {
            .start      = CM_X300_ETH_PHYS,
            .end  = CM_X300_ETH_PHYS + 0x3,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = CM_X300_ETH_PHYS + 0x4,
            .end  = CM_X300_ETH_PHYS + 0x4 + 500,
            .flags      = IORESOURCE_MEM,
      },
      [2] = {
            .start      = IRQ_GPIO(mfp_to_gpio(MFP_PIN_GPIO99)),
            .end  = IRQ_GPIO(mfp_to_gpio(MFP_PIN_GPIO99)),
            .flags      = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
      }
};

static struct dm9000_plat_data cm_x300_dm9000_platdata = {
      .flags            = DM9000_PLATF_16BITONLY,
};

static struct platform_device dm9000_device = {
      .name       = "dm9000",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(dm9000_resources),
      .resource   = dm9000_resources,
      .dev        = {
            .platform_data = &cm_x300_dm9000_platdata,
      }

};

static void __init cm_x300_init_dm9000(void)
{
      platform_device_register(&dm9000_device);
}
#else
static inline void cm_x300_init_dm9000(void) {}
#endif

#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct pxafb_mode_info cm_x300_lcd_modes[] = {
      [0] = {
            .pixclock   = 38000,
            .bpp        = 16,
            .xres       = 480,
            .yres       = 640,
            .hsync_len  = 8,
            .vsync_len  = 2,
            .left_margin      = 8,
            .upper_margin     = 0,
            .right_margin     = 24,
            .lower_margin     = 4,
            .cmap_greyscale   = 0,
      },
      [1] = {
            .pixclock   = 153800,
            .bpp        = 16,
            .xres       = 240,
            .yres       = 320,
            .hsync_len  = 8,
            .vsync_len  = 2,
            .left_margin      = 8,
            .upper_margin     = 2,
            .right_margin     = 88,
            .lower_margin     = 2,
            .cmap_greyscale   = 0,
      },
};

static struct pxafb_mach_info cm_x300_lcd = {
      .modes                  = cm_x300_lcd_modes,
      .num_modes        = 2,
      .lcd_conn         = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

static void __init cm_x300_init_lcd(void)
{
      set_pxa_fb_info(&cm_x300_lcd);
}
#else
static inline void cm_x300_init_lcd(void) {}
#endif

#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
static struct mtd_partition cm_x300_nand_partitions[] = {
      [0] = {
            .name        = "OBM",
            .offset      = 0,
            .size        = SZ_256K,
            .mask_flags  = MTD_WRITEABLE, /* force read-only */
      },
      [1] = {
            .name        = "U-Boot",
            .offset      = MTDPART_OFS_APPEND,
            .size        = SZ_256K,
            .mask_flags  = MTD_WRITEABLE, /* force read-only */
      },
      [2] = {
            .name        = "Environment",
            .offset      = MTDPART_OFS_APPEND,
            .size        = SZ_256K,
      },
      [3] = {
            .name        = "reserved",
            .offset      = MTDPART_OFS_APPEND,
            .size        = SZ_256K + SZ_1M,
            .mask_flags  = MTD_WRITEABLE, /* force read-only */
      },
      [4] = {
            .name        = "kernel",
            .offset      = MTDPART_OFS_APPEND,
            .size        = SZ_4M,
      },
      [5] = {
            .name        = "fs",
            .offset      = MTDPART_OFS_APPEND,
            .size        = MTDPART_SIZ_FULL,
      },
};

static struct pxa3xx_nand_platform_data cm_x300_nand_info = {
      .enable_arbiter   = 1,
      .parts            = cm_x300_nand_partitions,
      .nr_parts   = ARRAY_SIZE(cm_x300_nand_partitions),
};

static void __init cm_x300_init_nand(void)
{
      pxa3xx_set_nand_info(&cm_x300_nand_info);
}
#else
static inline void cm_x300_init_nand(void) {}
#endif

#if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
/* The first MMC slot of CM-X300 is hardwired to Libertas card and has
   no detection/ro pins */
static int cm_x300_mci_init(struct device *dev,
                      irq_handler_t cm_x300_detect_int,
                      void *data)
{
      return 0;
}

static void cm_x300_mci_exit(struct device *dev, void *data)
{
}

static struct pxamci_platform_data cm_x300_mci_platform_data = {
      .detect_delay     = 20,
      .ocr_mask   = MMC_VDD_32_33|MMC_VDD_33_34,
      .init             = cm_x300_mci_init,
      .exit       = cm_x300_mci_exit,
};

static int cm_x300_mci2_ro(struct device *dev)
{
      return gpio_get_value(GPIO85_MMC2_WP);
}

static int cm_x300_mci2_init(struct device *dev,
                       irq_handler_t cm_x300_detect_int,
                       void *data)
{
      int err;

      /*
       * setup GPIO for CM-X300 MMC controller
       */
      err = gpio_request(GPIO82_MMC2_IRQ, "mmc card detect");
      if (err)
            goto err_request_cd;
      gpio_direction_input(GPIO82_MMC2_IRQ);

      err = gpio_request(GPIO85_MMC2_WP, "mmc write protect");
      if (err)
            goto err_request_wp;
      gpio_direction_input(GPIO85_MMC2_WP);

      err = request_irq(CM_X300_MMC2_IRQ, cm_x300_detect_int,
                    IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
                    "MMC card detect", data);
      if (err) {
            printk(KERN_ERR "%s: MMC/SD/SDIO: "
                        "can't request card detect IRQ\n", __func__);
            goto err_request_irq;
      }

      return 0;

err_request_irq:
      gpio_free(GPIO85_MMC2_WP);
err_request_wp:
      gpio_free(GPIO82_MMC2_IRQ);
err_request_cd:
      return err;
}

static void cm_x300_mci2_exit(struct device *dev, void *data)
{
      free_irq(CM_X300_MMC2_IRQ, data);
      gpio_free(GPIO82_MMC2_IRQ);
      gpio_free(GPIO85_MMC2_WP);
}

static struct pxamci_platform_data cm_x300_mci2_platform_data = {
      .detect_delay     = 20,
      .ocr_mask   = MMC_VDD_32_33|MMC_VDD_33_34,
      .init             = cm_x300_mci2_init,
      .exit       = cm_x300_mci2_exit,
      .get_ro           = cm_x300_mci2_ro,
};

static void __init cm_x300_init_mmc(void)
{
      pxa_set_mci_info(&cm_x300_mci_platform_data);
      pxa3xx_set_mci2_info(&cm_x300_mci2_platform_data);
}
#else
static inline void cm_x300_init_mmc(void) {}
#endif

#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static struct pxaohci_platform_data cm_x300_ohci_platform_data = {
      .port_mode  = PMM_PERPORT_MODE,
      .flags            = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
};

static void __init cm_x300_init_ohci(void)
{
      pxa_set_ohci_info(&cm_x300_ohci_platform_data);
}
#else
static inline void cm_x300_init_ohci(void) {}
#endif

#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led cm_x300_leds[] = {
      [0] = {
            .name = "cm-x300:green",
            .default_trigger = "heartbeat",
            .gpio = 79,
            .active_low = 1,
      },
};

static struct gpio_led_platform_data cm_x300_gpio_led_pdata = {
      .num_leds = ARRAY_SIZE(cm_x300_leds),
      .leds = cm_x300_leds,
};

static struct platform_device cm_x300_led_device = {
      .name       = "leds-gpio",
      .id         = -1,
      .dev        = {
            .platform_data = &cm_x300_gpio_led_pdata,
      },
};

static void __init cm_x300_init_leds(void)
{
      platform_device_register(&cm_x300_led_device);
}
#else
static inline void cm_x300_init_leds(void) {}
#endif

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
/* PCA9555 */
static struct pca953x_platform_data cm_x300_gpio_ext_pdata_0 = {
      .gpio_base = 128,
};

static struct pca953x_platform_data cm_x300_gpio_ext_pdata_1 = {
      .gpio_base = 144,
};

static struct i2c_board_info cm_x300_gpio_ext_info[] = {
      [0] = {
            I2C_BOARD_INFO("pca9555", 0x24),
            .platform_data = &cm_x300_gpio_ext_pdata_0,
      },
      [1] = {
            I2C_BOARD_INFO("pca9555", 0x25),
            .platform_data = &cm_x300_gpio_ext_pdata_1,
      },
};

static void __init cm_x300_init_i2c(void)
{
      pxa_set_i2c_info(NULL);
      i2c_register_board_info(0, cm_x300_gpio_ext_info,
                        ARRAY_SIZE(cm_x300_gpio_ext_info));
}
#else
static inline void cm_x300_init_i2c(void) {}
#endif

static void __init cm_x300_init(void)
{
      /* board-processor specific GPIO initialization */
      pxa3xx_mfp_config(ARRAY_AND_SIZE(cm_x300_mfp_cfg));

      cm_x300_init_dm9000();
      cm_x300_init_lcd();
      cm_x300_init_ohci();
      cm_x300_init_mmc();
      cm_x300_init_nand();
      cm_x300_init_leds();
      cm_x300_init_i2c();
}

MACHINE_START(CM_X300, "CM-X300 module")
      .phys_io    = 0x40000000,
      .boot_params      = 0xa0000100,
      .io_pg_offst      = (io_p2v(0x40000000) >> 18) & 0xfffc,
      .map_io           = pxa_map_io,
      .init_irq   = pxa3xx_init_irq,
      .timer            = &pxa_timer,
      .init_machine     = cm_x300_init,
MACHINE_END

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