cm-x270.c

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/*
 * linux/arch/arm/mach-pxa/cm-x270.c
 *
 * Copyright (C) 2007, 2008 CompuLab, Ltd.
 * Mike Rapoport <[email protected]>
 *
 * 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/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 <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/mmc-pxamci.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      PXA_GPIO_TO_IRQ(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            = PXA_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();
}