/*
 *  platform.c: platform support for PNX833X.
 *
 *  Copyright 2008 NXP Semiconductors
 *        Chris Steel <chris.steel@nxp.com>
 *    Daniel Laird <daniel.j.laird@nxp.com>
 *
 *  Based on software written by:
 *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/resource.h>
#include <linux/serial.h>
#include <linux/serial_pnx8xxx.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>

#ifdef CONFIG_I2C_PNX0105
/* Until i2c driver available in kernel.*/
#include <linux/i2c-pnx0105.h>
#endif

#include <irq.h>
#include <irq-mapping.h>
#include <pnx833x.h>

static u64 uart_dmamask     = DMA_BIT_MASK(32);

static struct resource pnx833x_uart_resources[] = {
        [0] = {
                .start          = PNX833X_UART0_PORTS_START,
                .end            = PNX833X_UART0_PORTS_END,
                .flags          = IORESOURCE_MEM,
        },
        [1] = {
                .start          = PNX833X_PIC_UART0_INT,
                .end            = PNX833X_PIC_UART0_INT,
                .flags          = IORESOURCE_IRQ,
        },
        [2] = {
                .start          = PNX833X_UART1_PORTS_START,
                .end            = PNX833X_UART1_PORTS_END,
                .flags          = IORESOURCE_MEM,
        },
        [3] = {
                .start          = PNX833X_PIC_UART1_INT,
                .end            = PNX833X_PIC_UART1_INT,
                .flags          = IORESOURCE_IRQ,
        },
};

struct pnx8xxx_port pnx8xxx_ports[] = {
        [0] = {
                .port   = {
                        .type           = PORT_PNX8XXX,
                        .iotype         = UPIO_MEM,
                        .membase        = (void __iomem *)PNX833X_UART0_PORTS_START,
                        .mapbase        = PNX833X_UART0_PORTS_START,
                        .irq            = PNX833X_PIC_UART0_INT,
                        .uartclk        = 3692300,
                        .fifosize       = 16,
                        .flags          = UPF_BOOT_AUTOCONF,
                        .line           = 0,
                },
        },
        [1] = {
                .port   = {
                        .type           = PORT_PNX8XXX,
                        .iotype         = UPIO_MEM,
                        .membase        = (void __iomem *)PNX833X_UART1_PORTS_START,
                        .mapbase        = PNX833X_UART1_PORTS_START,
                        .irq            = PNX833X_PIC_UART1_INT,
                        .uartclk        = 3692300,
                        .fifosize       = 16,
                        .flags          = UPF_BOOT_AUTOCONF,
                        .line           = 1,
                },
        },
};

static struct platform_device pnx833x_uart_device = {
        .name           = "pnx8xxx-uart",
        .id             = -1,
        .dev = {
                .dma_mask               = &uart_dmamask,
                .coherent_dma_mask      = DMA_BIT_MASK(32),
                .platform_data          = pnx8xxx_ports,
        },
        .num_resources  = ARRAY_SIZE(pnx833x_uart_resources),
        .resource       = pnx833x_uart_resources,
};

static u64 ehci_dmamask     = DMA_BIT_MASK(32);

static struct resource pnx833x_usb_ehci_resources[] = {
        [0] = {
                .start          = PNX833X_USB_PORTS_START,
                .end            = PNX833X_USB_PORTS_END,
                .flags          = IORESOURCE_MEM,
        },
        [1] = {
                .start          = PNX833X_PIC_USB_INT,
                .end            = PNX833X_PIC_USB_INT,
                .flags          = IORESOURCE_IRQ,
        },
};

static struct platform_device pnx833x_usb_ehci_device = {
        .name           = "pnx833x-ehci",
        .id             = -1,
        .dev = {
                .dma_mask               = &ehci_dmamask,
                .coherent_dma_mask      = DMA_BIT_MASK(32),
        },
        .num_resources  = ARRAY_SIZE(pnx833x_usb_ehci_resources),
        .resource       = pnx833x_usb_ehci_resources,
};

#ifdef CONFIG_I2C_PNX0105
static struct resource pnx833x_i2c0_resources[] = {
        {
                .start          = PNX833X_I2C0_PORTS_START,
                .end            = PNX833X_I2C0_PORTS_END,
                .flags          = IORESOURCE_MEM,
        },
        {
                .start          = PNX833X_PIC_I2C0_INT,
                .end            = PNX833X_PIC_I2C0_INT,
                .flags          = IORESOURCE_IRQ,
        },
};

static struct resource pnx833x_i2c1_resources[] = {
        {
                .start          = PNX833X_I2C1_PORTS_START,
                .end            = PNX833X_I2C1_PORTS_END,
                .flags          = IORESOURCE_MEM,
        },
        {
                .start          = PNX833X_PIC_I2C1_INT,
                .end            = PNX833X_PIC_I2C1_INT,
                .flags          = IORESOURCE_IRQ,
        },
};

static struct i2c_pnx0105_dev pnx833x_i2c_dev[] = {
        {
                .base = PNX833X_I2C0_PORTS_START,
                .irq = -1, /* should be PNX833X_PIC_I2C0_INT but polling is faster */
                .clock = 6,     /* 0 == 400 kHz, 4 == 100 kHz(Maximum HDMI), 6 = 50kHz(Preferred HDCP) */
                .bus_addr = 0,  /* no slave support */
        },
        {
                .base = PNX833X_I2C1_PORTS_START,
                .irq = -1,      /* on high freq, polling is faster */
                /*.irq = PNX833X_PIC_I2C1_INT,*/
                .clock = 4,     /* 0 == 400 kHz, 4 == 100 kHz. 100 kHz seems a safe default for now */
                .bus_addr = 0,  /* no slave support */
        },
};

static struct platform_device pnx833x_i2c0_device = {
        .name           = "i2c-pnx0105",
        .id             = 0,
        .dev = {
                .platform_data = &pnx833x_i2c_dev[0],
        },
        .num_resources  = ARRAY_SIZE(pnx833x_i2c0_resources),
        .resource       = pnx833x_i2c0_resources,
};

static struct platform_device pnx833x_i2c1_device = {
        .name           = "i2c-pnx0105",
        .id             = 1,
        .dev = {
                .platform_data = &pnx833x_i2c_dev[1],
        },
        .num_resources  = ARRAY_SIZE(pnx833x_i2c1_resources),
        .resource       = pnx833x_i2c1_resources,
};
#endif

static u64 ethernet_dmamask = DMA_BIT_MASK(32);

static struct resource pnx833x_ethernet_resources[] = {
        [0] = {
                .start = PNX8335_IP3902_PORTS_START,
                .end   = PNX8335_IP3902_PORTS_END,
                .flags = IORESOURCE_MEM,
        },
        [1] = {
                .start = PNX8335_PIC_ETHERNET_INT,
                .end   = PNX8335_PIC_ETHERNET_INT,
                .flags = IORESOURCE_IRQ,
        },
};

static struct platform_device pnx833x_ethernet_device = {
        .name = "ip3902-eth",
        .id   = -1,
        .dev  = {
                .dma_mask          = &ethernet_dmamask,
                .coherent_dma_mask = DMA_BIT_MASK(32),
        },
        .num_resources = ARRAY_SIZE(pnx833x_ethernet_resources),
        .resource      = pnx833x_ethernet_resources,
};

static struct resource pnx833x_sata_resources[] = {
        [0] = {
                .start = PNX8335_SATA_PORTS_START,
                .end   = PNX8335_SATA_PORTS_END,
                .flags = IORESOURCE_MEM,
        },
        [1] = {
                .start = PNX8335_PIC_SATA_INT,
                .end   = PNX8335_PIC_SATA_INT,
                .flags = IORESOURCE_IRQ,
        },
};

static struct platform_device pnx833x_sata_device = {
        .name          = "pnx833x-sata",
        .id            = -1,
        .num_resources = ARRAY_SIZE(pnx833x_sata_resources),
        .resource      = pnx833x_sata_resources,
};

static const char *part_probes[] = {
        "cmdlinepart",
        NULL
};

static void
pnx833x_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
        struct nand_chip *this = mtd->priv;
        unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;

        if (cmd == NAND_CMD_NONE)
                return;

        if (ctrl & NAND_CLE)
                writeb(cmd, (void __iomem *)(nandaddr + PNX8335_NAND_CLE_MASK));
        else
                writeb(cmd, (void __iomem *)(nandaddr + PNX8335_NAND_ALE_MASK));
}

static struct platform_nand_data pnx833x_flash_nand_data = {
        .chip = {
                .nr_chips               = 1,
                .chip_delay             = 25,
                .part_probe_types       = part_probes,
        },
        .ctrl = {
                .cmd_ctrl               = pnx833x_flash_nand_cmd_ctrl
        }
};

/*
 * Set start to be the correct address (PNX8335_NAND_BASE with no 0xb!!),
 * 12 bytes more seems to be the standard that allows for NAND access.
 */
static struct resource pnx833x_flash_nand_resource = {
        .start  = PNX8335_NAND_BASE,
        .end    = PNX8335_NAND_BASE + 12,
        .flags  = IORESOURCE_MEM,
};

static struct platform_device pnx833x_flash_nand = {
        .name           = "gen_nand",
        .id                     = -1,
        .num_resources  = 1,
        .resource           = &pnx833x_flash_nand_resource,
        .dev            = {
                .platform_data = &pnx833x_flash_nand_data,
        },
};

static struct platform_device *pnx833x_platform_devices[] __initdata = {
        &pnx833x_uart_device,
        &pnx833x_usb_ehci_device,
#ifdef CONFIG_I2C_PNX0105
        &pnx833x_i2c0_device,
        &pnx833x_i2c1_device,
#endif
        &pnx833x_ethernet_device,
        &pnx833x_sata_device,
        &pnx833x_flash_nand,
};

static int __init pnx833x_platform_init(void)
{
        int res;

        res = platform_add_devices(pnx833x_platform_devices,
                                   ARRAY_SIZE(pnx833x_platform_devices));

        return res;
}

arch_initcall(pnx833x_platform_init);