/* Copyright (c) 2009-2011, Code Aurora Forum. 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 version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * 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/kernel.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/usb/msm_hsusb.h>
#include <linux/err.h>
#include <linux/clkdev.h>

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

#include <mach/board.h>
#include <mach/irqs.h>
#include <mach/sirc.h>
#include <mach/vreg.h>
#include <linux/platform_data/mmc-msm_sdcc.h>

#include "devices.h"
#include "common.h"

static const resource_size_t qsd8x50_surf_smc91x_base __initconst = 0x70000300;
static const unsigned        qsd8x50_surf_smc91x_gpio __initconst = 156;

/* Leave smc91x resources empty here, as we'll fill them in
 * at run-time: they vary from board to board, and the true
 * configuration won't be known until boot.
 */
static struct resource smc91x_resources[] = {
        [0] = {
                .flags = IORESOURCE_MEM,
        },
        [1] = {
                .flags = IORESOURCE_IRQ,
        },
};

static struct platform_device smc91x_device = {
        .name           = "smc91x",
        .id             = 0,
        .num_resources  = ARRAY_SIZE(smc91x_resources),
        .resource       = smc91x_resources,
};

static int __init msm_init_smc91x(void)
{
        if (machine_is_qsd8x50_surf()) {
                smc91x_resources[0].start = qsd8x50_surf_smc91x_base;
                smc91x_resources[0].end   = qsd8x50_surf_smc91x_base + 0xff;
                smc91x_resources[1].start =
                        gpio_to_irq(qsd8x50_surf_smc91x_gpio);
                smc91x_resources[1].end   =
                        gpio_to_irq(qsd8x50_surf_smc91x_gpio);
                platform_device_register(&smc91x_device);
        }

        return 0;
}
module_init(msm_init_smc91x);

static int hsusb_phy_init_seq[] = {
        0x08, 0x31,     /* Increase HS Driver Amplitude */
        0x20, 0x32,     /* Enable and set Pre-Emphasis Depth to 10% */
        -1
};

static struct msm_otg_platform_data msm_otg_pdata = {
        .phy_init_seq           = hsusb_phy_init_seq,
        .mode                   = USB_PERIPHERAL,
        .otg_control            = OTG_PHY_CONTROL,
};

static struct platform_device *devices[] __initdata = {
        &msm_device_uart3,
        &msm_device_smd,
        &msm_device_otg,
        &msm_device_hsusb,
        &msm_device_hsusb_host,
};

static struct msm_mmc_gpio sdc1_gpio_cfg[] = {
        {51, "sdc1_dat_3"},
        {52, "sdc1_dat_2"},
        {53, "sdc1_dat_1"},
        {54, "sdc1_dat_0"},
        {55, "sdc1_cmd"},
        {56, "sdc1_clk"}
};

static struct vreg *vreg_mmc;
static unsigned long vreg_sts;

static uint32_t msm_sdcc_setup_power(struct device *dv, unsigned int vdd)
{
        int rc = 0;
        struct platform_device *pdev;

        pdev = container_of(dv, struct platform_device, dev);

        if (vdd == 0) {
                if (!vreg_sts)
                        return 0;

                clear_bit(pdev->id, &vreg_sts);

                if (!vreg_sts) {
                        rc = vreg_disable(vreg_mmc);
                        if (rc)
                                pr_err("vreg_mmc disable failed for slot "
                                                "%d: %d\n", pdev->id, rc);
                }
                return 0;
        }

        if (!vreg_sts) {
                rc = vreg_set_level(vreg_mmc, 2900);
                if (rc)
                        pr_err("vreg_mmc set level failed for slot %d: %d\n",
                                        pdev->id, rc);
                rc = vreg_enable(vreg_mmc);
                if (rc)
                        pr_err("vreg_mmc enable failed for slot %d: %d\n",
                                        pdev->id, rc);
        }
        set_bit(pdev->id, &vreg_sts);
        return 0;
}

static struct msm_mmc_gpio_data sdc1_gpio = {
        .gpio = sdc1_gpio_cfg,
        .size = ARRAY_SIZE(sdc1_gpio_cfg),
};

static struct msm_mmc_platform_data qsd8x50_sdc1_data = {
        .ocr_mask       = MMC_VDD_27_28 | MMC_VDD_28_29,
        .translate_vdd  = msm_sdcc_setup_power,
        .gpio_data = &sdc1_gpio,
};

static void __init qsd8x50_init_mmc(void)
{
        vreg_mmc = vreg_get(NULL, "gp5");

        if (IS_ERR(vreg_mmc)) {
                pr_err("vreg get for vreg_mmc failed (%ld)\n",
                                PTR_ERR(vreg_mmc));
                return;
        }

        msm_add_sdcc(1, &qsd8x50_sdc1_data, 0, 0);
}

static void __init qsd8x50_map_io(void)
{
        msm_map_qsd8x50_io();
        msm_clock_init(msm_clocks_8x50, msm_num_clocks_8x50);
}

static void __init qsd8x50_init_irq(void)
{
        msm_init_irq();
        msm_init_sirc();
}

static void __init qsd8x50_init(void)
{
        msm_device_otg.dev.platform_data = &msm_otg_pdata;
        msm_device_hsusb.dev.parent = &msm_device_otg.dev;
        msm_device_hsusb_host.dev.parent = &msm_device_otg.dev;
        platform_add_devices(devices, ARRAY_SIZE(devices));
        qsd8x50_init_mmc();
}

static void __init qsd8x50_init_late(void)
{
        smd_debugfs_init();
}

MACHINE_START(QSD8X50_SURF, "QCT QSD8X50 SURF")
        .atag_offset = 0x100,
        .map_io = qsd8x50_map_io,
        .init_irq = qsd8x50_init_irq,
        .init_machine = qsd8x50_init,
        .init_late = qsd8x50_init_late,
        .timer = &qsd8x50_timer,
MACHINE_END

MACHINE_START(QSD8X50A_ST1_5, "QCT QSD8X50A ST1.5")
        .atag_offset = 0x100,
        .map_io = qsd8x50_map_io,
        .init_irq = qsd8x50_init_irq,
        .init_machine = qsd8x50_init,
        .init_late = qsd8x50_init_late,
        .timer = &qsd8x50_timer,
MACHINE_END