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cm-x270.c

/*
 * linux/arch/arm/mach-pxa/cm-x270.c
 *
 * Copyright (C) 2007, 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/sysdev.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/delay.h>

#include <linux/rtc-v3020.h>
#include <video/mbxfb.h>

#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/spi/libertas_spi.h>

#include <mach/pxa27x.h>
#include <mach/ohci.h>
#include <mach/mmc.h>

#include "generic.h"

/* physical address if local-bus attached devices */
#define RTC_PHYS_BASE         (PXA_CS1_PHYS + (5 << 22))

/* GPIO IRQ usage */
#define GPIO83_MMC_IRQ        (83)

#define CMX270_MMC_IRQ        IRQ_GPIO(GPIO83_MMC_IRQ)

/* MMC power enable */
#define GPIO105_MMC_POWER     (105)

/* WLAN GPIOS */
#define GPIO19_WLAN_STRAP     (19)
#define GPIO102_WLAN_RST      (102)

static unsigned long cmx270_pin_config[] = {
      /* AC'97 */
      GPIO28_AC97_BITCLK,
      GPIO29_AC97_SDATA_IN_0,
      GPIO30_AC97_SDATA_OUT,
      GPIO31_AC97_SYNC,
      GPIO98_AC97_SYSCLK,
      GPIO113_AC97_nRESET,

      /* BTUART */
      GPIO42_BTUART_RXD,
      GPIO43_BTUART_TXD,
      GPIO44_BTUART_CTS,
      GPIO45_BTUART_RTS,

      /* STUART */
      GPIO46_STUART_RXD,
      GPIO47_STUART_TXD,

      /* MCI controller */
      GPIO32_MMC_CLK,
      GPIO112_MMC_CMD,
      GPIO92_MMC_DAT_0,
      GPIO109_MMC_DAT_1,
      GPIO110_MMC_DAT_2,
      GPIO111_MMC_DAT_3,

      /* LCD */
      GPIOxx_LCD_TFT_16BPP,

      /* I2C */
      GPIO117_I2C_SCL,
      GPIO118_I2C_SDA,

      /* SSP1 */
      GPIO23_SSP1_SCLK,
      GPIO24_SSP1_SFRM,
      GPIO25_SSP1_TXD,
      GPIO26_SSP1_RXD,

      /* SSP2 */
      GPIO19_GPIO,      /* SSP2 clock is used as GPIO for Libertas pin-strap */
      GPIO14_GPIO,
      GPIO87_SSP2_TXD,
      GPIO88_SSP2_RXD,

      /* PC Card */
      GPIO48_nPOE,
      GPIO49_nPWE,
      GPIO50_nPIOR,
      GPIO51_nPIOW,
      GPIO85_nPCE_1,
      GPIO54_nPCE_2,
      GPIO55_nPREG,
      GPIO56_nPWAIT,
      GPIO57_nIOIS16,

      /* SDRAM and local bus */
      GPIO15_nCS_1,
      GPIO78_nCS_2,
      GPIO79_nCS_3,
      GPIO80_nCS_4,
      GPIO33_nCS_5,
      GPIO49_nPWE,
      GPIO18_RDY,

      /* GPIO */
      GPIO0_GPIO  | WAKEUP_ON_EDGE_BOTH,
      GPIO105_GPIO      | MFP_LPM_DRIVE_HIGH,   /* MMC/SD power */
      GPIO53_GPIO,                        /* PC card reset */
      GPIO102_GPIO,                       /* WLAN reset */

      /* NAND controls */
      GPIO11_GPIO | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
      GPIO89_GPIO,                        /* NAND Ready/Busy */

      /* interrupts */
      GPIO10_GPIO,      /* DM9000 interrupt */
      GPIO83_GPIO,      /* MMC card detect */
      GPIO95_GPIO,      /* WLAN interrupt */
};

/* V3020 RTC */
#if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
static struct resource cmx270_v3020_resource[] = {
      [0] = {
            .start = RTC_PHYS_BASE,
            .end   = RTC_PHYS_BASE + 4,
            .flags = IORESOURCE_MEM,
      },
};

struct v3020_platform_data cmx270_v3020_pdata = {
      .leftshift = 16,
};

static struct platform_device cmx270_rtc_device = {
      .name       = "v3020",
      .num_resources    = ARRAY_SIZE(cmx270_v3020_resource),
      .resource   = cmx270_v3020_resource,
      .id         = -1,
      .dev        = {
            .platform_data = &cmx270_v3020_pdata,
      }
};

static void __init cmx270_init_rtc(void)
{
      platform_device_register(&cmx270_rtc_device);
}
#else
static inline void cmx270_init_rtc(void) {}
#endif

/* 2700G graphics */
#if defined(CONFIG_FB_MBX) || defined(CONFIG_FB_MBX_MODULE)
static u64 fb_dma_mask = ~(u64)0;

static struct resource cmx270_2700G_resource[] = {
      /* frame buffer memory including ODFB and External SDRAM */
      [0] = {
            .start = PXA_CS2_PHYS,
            .end   = PXA_CS2_PHYS + 0x01ffffff,
            .flags = IORESOURCE_MEM,
      },
      /* Marathon registers */
      [1] = {
            .start = PXA_CS2_PHYS + 0x03fe0000,
            .end   = PXA_CS2_PHYS + 0x03ffffff,
            .flags = IORESOURCE_MEM,
      },
};

static unsigned long cmx270_marathon_on[] = {
      GPIO58_GPIO,
      GPIO59_GPIO,
      GPIO60_GPIO,
      GPIO61_GPIO,
      GPIO62_GPIO,
      GPIO63_GPIO,
      GPIO64_GPIO,
      GPIO65_GPIO,
      GPIO66_GPIO,
      GPIO67_GPIO,
      GPIO68_GPIO,
      GPIO69_GPIO,
      GPIO70_GPIO,
      GPIO71_GPIO,
      GPIO72_GPIO,
      GPIO73_GPIO,
      GPIO74_GPIO,
      GPIO75_GPIO,
      GPIO76_GPIO,
      GPIO77_GPIO,
};

static unsigned long cmx270_marathon_off[] = {
      GPIOxx_LCD_TFT_16BPP,
};

static int cmx270_marathon_probe(struct fb_info *fb)
{
      int gpio, err;

      for (gpio = 58; gpio <= 77; gpio++) {
            err = gpio_request(gpio, "LCD");
            if (err)
                  return err;
            gpio_direction_input(gpio);
      }

      pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_marathon_on));
      return 0;
}

static int cmx270_marathon_remove(struct fb_info *fb)
{
      int gpio;

      pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_marathon_off));

      for (gpio = 58; gpio <= 77; gpio++)
            gpio_free(gpio);

      return 0;
}

static struct mbxfb_platform_data cmx270_2700G_data = {
      .xres = {
            .min = 240,
            .max = 1200,
            .defval = 640,
      },
      .yres = {
            .min = 240,
            .max = 1200,
            .defval = 480,
      },
      .bpp = {
            .min = 16,
            .max = 32,
            .defval = 16,
      },
      .memsize = 8*1024*1024,
      .probe = cmx270_marathon_probe,
      .remove = cmx270_marathon_remove,
};

static struct platform_device cmx270_2700G = {
      .name       = "mbx-fb",
      .dev        = {
            .platform_data    = &cmx270_2700G_data,
            .dma_mask   = &fb_dma_mask,
            .coherent_dma_mask = 0xffffffff,
      },
      .num_resources    = ARRAY_SIZE(cmx270_2700G_resource),
      .resource   = cmx270_2700G_resource,
      .id         = -1,
};

static void __init cmx270_init_2700G(void)
{
      platform_device_register(&cmx270_2700G);
}
#else
static inline void cmx270_init_2700G(void) {}
#endif

/* PXA27x OHCI controller setup */
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static struct pxaohci_platform_data cmx270_ohci_platform_data = {
      .port_mode  = PMM_PERPORT_MODE,
      .flags            = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
};

static void __init cmx270_init_ohci(void)
{
      pxa_set_ohci_info(&cmx270_ohci_platform_data);
}
#else
static inline void cmx270_init_ohci(void) {}
#endif

#if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
static struct pxamci_platform_data cmx270_mci_platform_data = {
      .ocr_mask         = MMC_VDD_32_33|MMC_VDD_33_34,
      .gpio_card_detect = GPIO83_MMC_IRQ,
      .gpio_card_ro           = -1,
      .gpio_power       = GPIO105_MMC_POWER,
      .gpio_power_invert      = 1,
};

static void __init cmx270_init_mmc(void)
{
      pxa_set_mci_info(&cmx270_mci_platform_data);
}
#else
static inline void cmx270_init_mmc(void) {}
#endif

#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
static struct pxa2xx_spi_master cm_x270_spi_info = {
      .num_chipselect   = 1,
      .enable_dma = 1,
};

static struct pxa2xx_spi_chip cm_x270_libertas_chip = {
      .rx_threshold     = 1,
      .tx_threshold     = 1,
      .timeout    = 1000,
      .gpio_cs    = 14,
};

static unsigned long cm_x270_libertas_pin_config[] = {
      /* SSP2 */
      GPIO19_SSP2_SCLK,
      GPIO14_GPIO,
      GPIO87_SSP2_TXD,
      GPIO88_SSP2_RXD,

};

static int cm_x270_libertas_setup(struct spi_device *spi)
{
      int err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP");
      if (err)
            return err;

      err = gpio_request(GPIO102_WLAN_RST, "WLAN RST");
      if (err)
            goto err_free_strap;

      err = gpio_direction_output(GPIO102_WLAN_RST, 0);
      if (err)
            goto err_free_strap;
      msleep(100);

      err = gpio_direction_output(GPIO19_WLAN_STRAP, 1);
      if (err)
            goto err_free_strap;
      msleep(100);

      pxa2xx_mfp_config(ARRAY_AND_SIZE(cm_x270_libertas_pin_config));

      gpio_set_value(GPIO102_WLAN_RST, 1);
      msleep(100);

      spi->bits_per_word = 16;
      spi_setup(spi);

      return 0;

err_free_strap:
      gpio_free(GPIO19_WLAN_STRAP);

      return err;
}

static int cm_x270_libertas_teardown(struct spi_device *spi)
{
      gpio_set_value(GPIO102_WLAN_RST, 0);
      gpio_free(GPIO102_WLAN_RST);
      gpio_free(GPIO19_WLAN_STRAP);

      return 0;
}

struct libertas_spi_platform_data cm_x270_libertas_pdata = {
      .use_dummy_writes = 1,
      .setup                  = cm_x270_libertas_setup,
      .teardown         = cm_x270_libertas_teardown,
};

static struct spi_board_info cm_x270_spi_devices[] __initdata = {
      {
            .modalias         = "libertas_spi",
            .max_speed_hz           = 13000000,
            .bus_num          = 2,
            .irq              = gpio_to_irq(95),
            .chip_select            = 0,
            .controller_data  = &cm_x270_libertas_chip,
            .platform_data          = &cm_x270_libertas_pdata,
      },
};

static void __init cmx270_init_spi(void)
{
      pxa2xx_set_spi_info(2, &cm_x270_spi_info);
      spi_register_board_info(ARRAY_AND_SIZE(cm_x270_spi_devices));
}
#else
static inline void cmx270_init_spi(void) {}
#endif

void __init cmx270_init(void)
{
      pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));

#ifdef CONFIG_PM
      pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP);
#endif

      cmx270_init_rtc();
      cmx270_init_mmc();
      cmx270_init_ohci();
      cmx270_init_2700G();
      cmx270_init_spi();
}

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