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platform.c

/*
 * Platform device support for Au1x00 SoCs.
 *
 * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
 *
 * (C) Copyright Embedded Alley Solutions, Inc 2005
 * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/init.h>

#include <asm/mach-au1x00/au1xxx.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1100_mmc.h>

#define PORT(_base, _irq)                       \
      {                                   \
            .iobase           = _base,          \
            .membase    = (void __iomem *)_base,\
            .mapbase    = CPHYSADDR(_base),     \
            .irq        = _irq,                 \
            .regshift   = 2,              \
            .iotype           = UPIO_AU,        \
            .flags            = UPF_SKIP_TEST   \
      }

static struct plat_serial8250_port au1x00_uart_data[] = {
#if defined(CONFIG_SERIAL_8250_AU1X00)
#if defined(CONFIG_SOC_AU1000)
      PORT(UART0_ADDR, AU1000_UART0_INT),
      PORT(UART1_ADDR, AU1000_UART1_INT),
      PORT(UART2_ADDR, AU1000_UART2_INT),
      PORT(UART3_ADDR, AU1000_UART3_INT),
#elif defined(CONFIG_SOC_AU1500)
      PORT(UART0_ADDR, AU1500_UART0_INT),
      PORT(UART3_ADDR, AU1500_UART3_INT),
#elif defined(CONFIG_SOC_AU1100)
      PORT(UART0_ADDR, AU1100_UART0_INT),
      PORT(UART1_ADDR, AU1100_UART1_INT),
      PORT(UART3_ADDR, AU1100_UART3_INT),
#elif defined(CONFIG_SOC_AU1550)
      PORT(UART0_ADDR, AU1550_UART0_INT),
      PORT(UART1_ADDR, AU1550_UART1_INT),
      PORT(UART3_ADDR, AU1550_UART3_INT),
#elif defined(CONFIG_SOC_AU1200)
      PORT(UART0_ADDR, AU1200_UART0_INT),
      PORT(UART1_ADDR, AU1200_UART1_INT),
#endif
#endif      /* CONFIG_SERIAL_8250_AU1X00 */
      { },
};

static struct platform_device au1xx0_uart_device = {
      .name             = "serial8250",
      .id               = PLAT8250_DEV_AU1X00,
      .dev              = {
            .platform_data    = au1x00_uart_data,
      },
};

/* OHCI (USB full speed host controller) */
static struct resource au1xxx_usb_ohci_resources[] = {
      [0] = {
            .start            = USB_OHCI_BASE,
            .end        = USB_OHCI_BASE + USB_OHCI_LEN - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = AU1000_USB_HOST_INT,
            .end        = AU1000_USB_HOST_INT,
            .flags            = IORESOURCE_IRQ,
      },
};

/* The dmamask must be set for OHCI to work */
static u64 ohci_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1xxx_usb_ohci_device = {
      .name       = "au1xxx-ohci",
      .id         = 0,
      .dev = {
            .dma_mask         = &ohci_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources    = ARRAY_SIZE(au1xxx_usb_ohci_resources),
      .resource   = au1xxx_usb_ohci_resources,
};

/*** AU1100 LCD controller ***/

#ifdef CONFIG_FB_AU1100
static struct resource au1100_lcd_resources[] = {
      [0] = {
            .start          = LCD_PHYS_ADDR,
            .end            = LCD_PHYS_ADDR + 0x800 - 1,
            .flags          = IORESOURCE_MEM,
      },
      [1] = {
            .start          = AU1100_LCD_INT,
            .end            = AU1100_LCD_INT,
            .flags          = IORESOURCE_IRQ,
      }
};

static u64 au1100_lcd_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1100_lcd_device = {
      .name           = "au1100-lcd",
      .id             = 0,
      .dev = {
            .dma_mask               = &au1100_lcd_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources  = ARRAY_SIZE(au1100_lcd_resources),
      .resource       = au1100_lcd_resources,
};
#endif

#ifdef CONFIG_SOC_AU1200
/* EHCI (USB high speed host controller) */
static struct resource au1xxx_usb_ehci_resources[] = {
      [0] = {
            .start            = USB_EHCI_BASE,
            .end        = USB_EHCI_BASE + USB_EHCI_LEN - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = AU1000_USB_HOST_INT,
            .end        = AU1000_USB_HOST_INT,
            .flags            = IORESOURCE_IRQ,
      },
};

static u64 ehci_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1xxx_usb_ehci_device = {
      .name       = "au1xxx-ehci",
      .id         = 0,
      .dev = {
            .dma_mask         = &ehci_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources    = ARRAY_SIZE(au1xxx_usb_ehci_resources),
      .resource   = au1xxx_usb_ehci_resources,
};

/* Au1200 UDC (USB gadget controller) */
static struct resource au1xxx_usb_gdt_resources[] = {
      [0] = {
            .start            = USB_UDC_BASE,
            .end        = USB_UDC_BASE + USB_UDC_LEN - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = AU1200_USB_INT,
            .end        = AU1200_USB_INT,
            .flags            = IORESOURCE_IRQ,
      },
};

static u64 udc_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1xxx_usb_gdt_device = {
      .name       = "au1xxx-udc",
      .id         = 0,
      .dev = {
            .dma_mask         = &udc_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources    = ARRAY_SIZE(au1xxx_usb_gdt_resources),
      .resource   = au1xxx_usb_gdt_resources,
};

/* Au1200 UOC (USB OTG controller) */
static struct resource au1xxx_usb_otg_resources[] = {
      [0] = {
            .start            = USB_UOC_BASE,
            .end        = USB_UOC_BASE + USB_UOC_LEN - 1,
            .flags            = IORESOURCE_MEM,
      },
      [1] = {
            .start            = AU1200_USB_INT,
            .end        = AU1200_USB_INT,
            .flags            = IORESOURCE_IRQ,
      },
};

static u64 uoc_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1xxx_usb_otg_device = {
      .name       = "au1xxx-uoc",
      .id         = 0,
      .dev = {
            .dma_mask         = &uoc_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources    = ARRAY_SIZE(au1xxx_usb_otg_resources),
      .resource   = au1xxx_usb_otg_resources,
};

static struct resource au1200_lcd_resources[] = {
      [0] = {
            .start          = LCD_PHYS_ADDR,
            .end            = LCD_PHYS_ADDR + 0x800 - 1,
            .flags          = IORESOURCE_MEM,
      },
      [1] = {
            .start          = AU1200_LCD_INT,
            .end            = AU1200_LCD_INT,
            .flags          = IORESOURCE_IRQ,
      }
};

static u64 au1200_lcd_dmamask = DMA_BIT_MASK(32);

static struct platform_device au1200_lcd_device = {
      .name           = "au1200-lcd",
      .id             = 0,
      .dev = {
            .dma_mask               = &au1200_lcd_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources  = ARRAY_SIZE(au1200_lcd_resources),
      .resource       = au1200_lcd_resources,
};

static u64 au1xxx_mmc_dmamask =  DMA_BIT_MASK(32);

extern struct au1xmmc_platform_data au1xmmc_platdata[2];

static struct resource au1200_mmc0_resources[] = {
      [0] = {
            .start          = SD0_PHYS_ADDR,
            .end            = SD0_PHYS_ADDR + 0x7ffff,
            .flags          = IORESOURCE_MEM,
      },
      [1] = {
            .start            = AU1200_SD_INT,
            .end        = AU1200_SD_INT,
            .flags            = IORESOURCE_IRQ,
      },
      [2] = {
            .start            = DSCR_CMD0_SDMS_TX0,
            .end        = DSCR_CMD0_SDMS_TX0,
            .flags            = IORESOURCE_DMA,
      },
      [3] = {
            .start          = DSCR_CMD0_SDMS_RX0,
            .end        = DSCR_CMD0_SDMS_RX0,
            .flags          = IORESOURCE_DMA,
      }
};

static struct platform_device au1200_mmc0_device = {
      .name = "au1xxx-mmc",
      .id = 0,
      .dev = {
            .dma_mask         = &au1xxx_mmc_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
            .platform_data          = &au1xmmc_platdata[0],
      },
      .num_resources    = ARRAY_SIZE(au1200_mmc0_resources),
      .resource   = au1200_mmc0_resources,
};

#ifndef CONFIG_MIPS_DB1200
static struct resource au1200_mmc1_resources[] = {
      [0] = {
            .start          = SD1_PHYS_ADDR,
            .end            = SD1_PHYS_ADDR + 0x7ffff,
            .flags          = IORESOURCE_MEM,
      },
      [1] = {
            .start            = AU1200_SD_INT,
            .end        = AU1200_SD_INT,
            .flags            = IORESOURCE_IRQ,
      },
      [2] = {
            .start            = DSCR_CMD0_SDMS_TX1,
            .end        = DSCR_CMD0_SDMS_TX1,
            .flags            = IORESOURCE_DMA,
      },
      [3] = {
            .start          = DSCR_CMD0_SDMS_RX1,
            .end        = DSCR_CMD0_SDMS_RX1,
            .flags          = IORESOURCE_DMA,
      }
};

static struct platform_device au1200_mmc1_device = {
      .name = "au1xxx-mmc",
      .id = 1,
      .dev = {
            .dma_mask         = &au1xxx_mmc_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
            .platform_data          = &au1xmmc_platdata[1],
      },
      .num_resources    = ARRAY_SIZE(au1200_mmc1_resources),
      .resource   = au1200_mmc1_resources,
};
#endif /* #ifndef CONFIG_MIPS_DB1200 */
#endif /* #ifdef CONFIG_SOC_AU1200 */

static struct platform_device au1x00_pcmcia_device = {
      .name             = "au1x00-pcmcia",
      .id         = 0,
};

/* All Alchemy demoboards with I2C have this #define in their headers */
#ifdef SMBUS_PSC_BASE
static struct resource pbdb_smbus_resources[] = {
      {
            .start      = CPHYSADDR(SMBUS_PSC_BASE),
            .end  = CPHYSADDR(SMBUS_PSC_BASE + 0xfffff),
            .flags      = IORESOURCE_MEM,
      },
};

static struct platform_device pbdb_smbus_device = {
      .name       = "au1xpsc_smbus",
      .id         = 0,  /* bus number */
      .num_resources    = ARRAY_SIZE(pbdb_smbus_resources),
      .resource   = pbdb_smbus_resources,
};
#endif

static struct platform_device *au1xxx_platform_devices[] __initdata = {
      &au1xx0_uart_device,
      &au1xxx_usb_ohci_device,
      &au1x00_pcmcia_device,
#ifdef CONFIG_FB_AU1100
      &au1100_lcd_device,
#endif
#ifdef CONFIG_SOC_AU1200
      &au1xxx_usb_ehci_device,
      &au1xxx_usb_gdt_device,
      &au1xxx_usb_otg_device,
      &au1200_lcd_device,
      &au1200_mmc0_device,
#ifndef CONFIG_MIPS_DB1200
      &au1200_mmc1_device,
#endif
#endif
#ifdef SMBUS_PSC_BASE
      &pbdb_smbus_device,
#endif
};

static int __init au1xxx_platform_init(void)
{
      unsigned int uartclk = get_au1x00_uart_baud_base() * 16;
      int i;

      /* Fill up uartclk. */
      for (i = 0; au1x00_uart_data[i].flags; i++)
            au1x00_uart_data[i].uartclk = uartclk;

      return platform_add_devices(au1xxx_platform_devices,
                            ARRAY_SIZE(au1xxx_platform_devices));
}

arch_initcall(au1xxx_platform_init);

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