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at91sam9261_devices.c

/*
 * arch/arm/mach-at91/at91sam9261_devices.c
 *
 *  Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
 *  Copyright (C) 2005 David Brownell
 *
 * 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.
 *
 */
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/i2c-gpio.h>

#include <linux/fb.h>
#include <video/atmel_lcdc.h>

#include <mach/board.h>
#include <mach/gpio.h>
#include <mach/at91sam9261.h>
#include <mach/at91sam9261_matrix.h>
#include <mach/at91sam9_smc.h>

#include "generic.h"


/* --------------------------------------------------------------------
 *  USB Host
 * -------------------------------------------------------------------- */

#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static u64 ohci_dmamask = DMA_BIT_MASK(32);
static struct at91_usbh_data usbh_data;

static struct resource usbh_resources[] = {
      [0] = {
            .start      = AT91SAM9261_UHP_BASE,
            .end  = AT91SAM9261_UHP_BASE + SZ_1M - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_UHP,
            .end  = AT91SAM9261_ID_UHP,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_usbh_device = {
      .name       = "at91_ohci",
      .id         = -1,
      .dev        = {
                        .dma_mask         = &ohci_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &usbh_data,
      },
      .resource   = usbh_resources,
      .num_resources    = ARRAY_SIZE(usbh_resources),
};

void __init at91_add_device_usbh(struct at91_usbh_data *data)
{
      if (!data)
            return;

      usbh_data = *data;
      platform_device_register(&at91sam9261_usbh_device);
}
#else
void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
#endif


/* --------------------------------------------------------------------
 *  USB Device (Gadget)
 * -------------------------------------------------------------------- */

#ifdef CONFIG_USB_GADGET_AT91
static struct at91_udc_data udc_data;

static struct resource udc_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_UDP,
            .end  = AT91SAM9261_BASE_UDP + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_UDP,
            .end  = AT91SAM9261_ID_UDP,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_udc_device = {
      .name       = "at91_udc",
      .id         = -1,
      .dev        = {
                        .platform_data          = &udc_data,
      },
      .resource   = udc_resources,
      .num_resources    = ARRAY_SIZE(udc_resources),
};

void __init at91_add_device_udc(struct at91_udc_data *data)
{
      if (!data)
            return;

      if (data->vbus_pin) {
            at91_set_gpio_input(data->vbus_pin, 0);
            at91_set_deglitch(data->vbus_pin, 1);
      }

      /* Pullup pin is handled internally by USB device peripheral */

      udc_data = *data;
      platform_device_register(&at91sam9261_udc_device);
}
#else
void __init at91_add_device_udc(struct at91_udc_data *data) {}
#endif

/* --------------------------------------------------------------------
 *  MMC / SD
 * -------------------------------------------------------------------- */

#if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
static u64 mmc_dmamask = DMA_BIT_MASK(32);
static struct at91_mmc_data mmc_data;

static struct resource mmc_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_MCI,
            .end  = AT91SAM9261_BASE_MCI + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_MCI,
            .end  = AT91SAM9261_ID_MCI,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_mmc_device = {
      .name       = "at91_mci",
      .id         = -1,
      .dev        = {
                        .dma_mask         = &mmc_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &mmc_data,
      },
      .resource   = mmc_resources,
      .num_resources    = ARRAY_SIZE(mmc_resources),
};

void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
{
      if (!data)
            return;

      /* input/irq */
      if (data->det_pin) {
            at91_set_gpio_input(data->det_pin, 1);
            at91_set_deglitch(data->det_pin, 1);
      }
      if (data->wp_pin)
            at91_set_gpio_input(data->wp_pin, 1);
      if (data->vcc_pin)
            at91_set_gpio_output(data->vcc_pin, 0);

      /* CLK */
      at91_set_B_periph(AT91_PIN_PA2, 0);

      /* CMD */
      at91_set_B_periph(AT91_PIN_PA1, 1);

      /* DAT0, maybe DAT1..DAT3 */
      at91_set_B_periph(AT91_PIN_PA0, 1);
      if (data->wire4) {
            at91_set_B_periph(AT91_PIN_PA4, 1);
            at91_set_B_periph(AT91_PIN_PA5, 1);
            at91_set_B_periph(AT91_PIN_PA6, 1);
      }

      mmc_data = *data;
      platform_device_register(&at91sam9261_mmc_device);
}
#else
void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
#endif


/* --------------------------------------------------------------------
 *  NAND / SmartMedia
 * -------------------------------------------------------------------- */

#if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
static struct atmel_nand_data nand_data;

#define NAND_BASE AT91_CHIPSELECT_3

static struct resource nand_resources[] = {
      {
            .start      = NAND_BASE,
            .end  = NAND_BASE + SZ_256M - 1,
            .flags      = IORESOURCE_MEM,
      }
};

static struct platform_device atmel_nand_device = {
      .name       = "atmel_nand",
      .id         = -1,
      .dev        = {
                        .platform_data    = &nand_data,
      },
      .resource   = nand_resources,
      .num_resources    = ARRAY_SIZE(nand_resources),
};

void __init at91_add_device_nand(struct atmel_nand_data *data)
{
      unsigned long csa;

      if (!data)
            return;

      csa = at91_sys_read(AT91_MATRIX_EBICSA);
      at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);

      /* enable pin */
      if (data->enable_pin)
            at91_set_gpio_output(data->enable_pin, 1);

      /* ready/busy pin */
      if (data->rdy_pin)
            at91_set_gpio_input(data->rdy_pin, 1);

      /* card detect pin */
      if (data->det_pin)
            at91_set_gpio_input(data->det_pin, 1);

      at91_set_A_periph(AT91_PIN_PC0, 0);       /* NANDOE */
      at91_set_A_periph(AT91_PIN_PC1, 0);       /* NANDWE */

      nand_data = *data;
      platform_device_register(&atmel_nand_device);
}

#else
void __init at91_add_device_nand(struct atmel_nand_data *data) {}
#endif


/* --------------------------------------------------------------------
 *  TWI (i2c)
 * -------------------------------------------------------------------- */

/*
 * Prefer the GPIO code since the TWI controller isn't robust
 * (gets overruns and underruns under load) and can only issue
 * repeated STARTs in one scenario (the driver doesn't yet handle them).
 */
#if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)

static struct i2c_gpio_platform_data pdata = {
      .sda_pin          = AT91_PIN_PA7,
      .sda_is_open_drain      = 1,
      .scl_pin          = AT91_PIN_PA8,
      .scl_is_open_drain      = 1,
      .udelay                 = 2,        /* ~100 kHz */
};

static struct platform_device at91sam9261_twi_device = {
      .name             = "i2c-gpio",
      .id               = -1,
      .dev.platform_data      = &pdata,
};

void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
{
      at91_set_GPIO_periph(AT91_PIN_PA7, 1);          /* TWD (SDA) */
      at91_set_multi_drive(AT91_PIN_PA7, 1);

      at91_set_GPIO_periph(AT91_PIN_PA8, 1);          /* TWCK (SCL) */
      at91_set_multi_drive(AT91_PIN_PA8, 1);

      i2c_register_board_info(0, devices, nr_devices);
      platform_device_register(&at91sam9261_twi_device);
}

#elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)

static struct resource twi_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_TWI,
            .end  = AT91SAM9261_BASE_TWI + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_TWI,
            .end  = AT91SAM9261_ID_TWI,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_twi_device = {
      .name       = "at91_i2c",
      .id         = -1,
      .resource   = twi_resources,
      .num_resources    = ARRAY_SIZE(twi_resources),
};

void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
{
      /* pins used for TWI interface */
      at91_set_A_periph(AT91_PIN_PA7, 0);       /* TWD */
      at91_set_multi_drive(AT91_PIN_PA7, 1);

      at91_set_A_periph(AT91_PIN_PA8, 0);       /* TWCK */
      at91_set_multi_drive(AT91_PIN_PA8, 1);

      i2c_register_board_info(0, devices, nr_devices);
      platform_device_register(&at91sam9261_twi_device);
}
#else
void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
#endif


/* --------------------------------------------------------------------
 *  SPI
 * -------------------------------------------------------------------- */

#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
static u64 spi_dmamask = DMA_BIT_MASK(32);

static struct resource spi0_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_SPI0,
            .end  = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_SPI0,
            .end  = AT91SAM9261_ID_SPI0,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_spi0_device = {
      .name       = "atmel_spi",
      .id         = 0,
      .dev        = {
                        .dma_mask         = &spi_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .resource   = spi0_resources,
      .num_resources    = ARRAY_SIZE(spi0_resources),
};

static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };

static struct resource spi1_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_SPI1,
            .end  = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_SPI1,
            .end  = AT91SAM9261_ID_SPI1,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_spi1_device = {
      .name       = "atmel_spi",
      .id         = 1,
      .dev        = {
                        .dma_mask         = &spi_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .resource   = spi1_resources,
      .num_resources    = ARRAY_SIZE(spi1_resources),
};

static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };

void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
{
      int i;
      unsigned long cs_pin;
      short enable_spi0 = 0;
      short enable_spi1 = 0;

      /* Choose SPI chip-selects */
      for (i = 0; i < nr_devices; i++) {
            if (devices[i].controller_data)
                  cs_pin = (unsigned long) devices[i].controller_data;
            else if (devices[i].bus_num == 0)
                  cs_pin = spi0_standard_cs[devices[i].chip_select];
            else
                  cs_pin = spi1_standard_cs[devices[i].chip_select];

            if (devices[i].bus_num == 0)
                  enable_spi0 = 1;
            else
                  enable_spi1 = 1;

            /* enable chip-select pin */
            at91_set_gpio_output(cs_pin, 1);

            /* pass chip-select pin to driver */
            devices[i].controller_data = (void *) cs_pin;
      }

      spi_register_board_info(devices, nr_devices);

      /* Configure SPI bus(es) */
      if (enable_spi0) {
            at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
            at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
            at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */

            at91_clock_associate("spi0_clk", &at91sam9261_spi0_device.dev, "spi_clk");
            platform_device_register(&at91sam9261_spi0_device);
      }
      if (enable_spi1) {
            at91_set_A_periph(AT91_PIN_PB30, 0);      /* SPI1_MISO */
            at91_set_A_periph(AT91_PIN_PB31, 0);      /* SPI1_MOSI */
            at91_set_A_periph(AT91_PIN_PB29, 0);      /* SPI1_SPCK */

            at91_clock_associate("spi1_clk", &at91sam9261_spi1_device.dev, "spi_clk");
            platform_device_register(&at91sam9261_spi1_device);
      }
}
#else
void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
#endif


/* --------------------------------------------------------------------
 *  LCD Controller
 * -------------------------------------------------------------------- */

#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
static u64 lcdc_dmamask = DMA_BIT_MASK(32);
static struct atmel_lcdfb_info lcdc_data;

static struct resource lcdc_resources[] = {
      [0] = {
            .start      = AT91SAM9261_LCDC_BASE,
            .end  = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_LCDC,
            .end  = AT91SAM9261_ID_LCDC,
            .flags      = IORESOURCE_IRQ,
      },
#if defined(CONFIG_FB_INTSRAM)
      [2] = {
            .start      = AT91SAM9261_SRAM_BASE,
            .end  = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
            .flags      = IORESOURCE_MEM,
      },
#endif
};

static struct platform_device at91_lcdc_device = {
      .name       = "atmel_lcdfb",
      .id         = 0,
      .dev        = {
                        .dma_mask         = &lcdc_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &lcdc_data,
      },
      .resource   = lcdc_resources,
      .num_resources    = ARRAY_SIZE(lcdc_resources),
};

void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
{
      if (!data) {
            return;
      }

#if defined(CONFIG_FB_ATMEL_STN)
      at91_set_A_periph(AT91_PIN_PB0, 0);     /* LCDVSYNC */
      at91_set_A_periph(AT91_PIN_PB1, 0);     /* LCDHSYNC */
      at91_set_A_periph(AT91_PIN_PB2, 0);     /* LCDDOTCK */
      at91_set_A_periph(AT91_PIN_PB3, 0);     /* LCDDEN */
      at91_set_A_periph(AT91_PIN_PB4, 0);     /* LCDCC */
      at91_set_A_periph(AT91_PIN_PB5, 0);     /* LCDD0 */
      at91_set_A_periph(AT91_PIN_PB6, 0);     /* LCDD1 */
      at91_set_A_periph(AT91_PIN_PB7, 0);     /* LCDD2 */
      at91_set_A_periph(AT91_PIN_PB8, 0);     /* LCDD3 */
#else
      at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
      at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
      at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
      at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
      at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
      at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
      at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */
      at91_set_A_periph(AT91_PIN_PB10, 0);      /* LCDD5 */
      at91_set_A_periph(AT91_PIN_PB11, 0);      /* LCDD6 */
      at91_set_A_periph(AT91_PIN_PB12, 0);      /* LCDD7 */
      at91_set_A_periph(AT91_PIN_PB15, 0);      /* LCDD10 */
      at91_set_A_periph(AT91_PIN_PB16, 0);      /* LCDD11 */
      at91_set_A_periph(AT91_PIN_PB17, 0);      /* LCDD12 */
      at91_set_A_periph(AT91_PIN_PB18, 0);      /* LCDD13 */
      at91_set_A_periph(AT91_PIN_PB19, 0);      /* LCDD14 */
      at91_set_A_periph(AT91_PIN_PB20, 0);      /* LCDD15 */
      at91_set_B_periph(AT91_PIN_PB23, 0);      /* LCDD18 */
      at91_set_B_periph(AT91_PIN_PB24, 0);      /* LCDD19 */
      at91_set_B_periph(AT91_PIN_PB25, 0);      /* LCDD20 */
      at91_set_B_periph(AT91_PIN_PB26, 0);      /* LCDD21 */
      at91_set_B_periph(AT91_PIN_PB27, 0);      /* LCDD22 */
      at91_set_B_periph(AT91_PIN_PB28, 0);      /* LCDD23 */
#endif

      if (ARRAY_SIZE(lcdc_resources) > 2) {
            void __iomem *fb;
            struct resource *fb_res = &lcdc_resources[2];
            size_t fb_len = fb_res->end - fb_res->start + 1;

            fb = ioremap(fb_res->start, fb_len);
            if (fb) {
                  memset(fb, 0, fb_len);
                  iounmap(fb);
            }
      }
      lcdc_data = *data;
      platform_device_register(&at91_lcdc_device);
}
#else
void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
#endif


/* --------------------------------------------------------------------
 *  Timer/Counter block
 * -------------------------------------------------------------------- */

#ifdef CONFIG_ATMEL_TCLIB

static struct resource tcb_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_TCB0,
            .end  = AT91SAM9261_BASE_TCB0 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_TC0,
            .end  = AT91SAM9261_ID_TC0,
            .flags      = IORESOURCE_IRQ,
      },
      [2] = {
            .start      = AT91SAM9261_ID_TC1,
            .end  = AT91SAM9261_ID_TC1,
            .flags      = IORESOURCE_IRQ,
      },
      [3] = {
            .start      = AT91SAM9261_ID_TC2,
            .end  = AT91SAM9261_ID_TC2,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_tcb_device = {
      .name       = "atmel_tcb",
      .id         = 0,
      .resource   = tcb_resources,
      .num_resources    = ARRAY_SIZE(tcb_resources),
};

static void __init at91_add_device_tc(void)
{
      /* this chip has a separate clock and irq for each TC channel */
      at91_clock_associate("tc0_clk", &at91sam9261_tcb_device.dev, "t0_clk");
      at91_clock_associate("tc1_clk", &at91sam9261_tcb_device.dev, "t1_clk");
      at91_clock_associate("tc2_clk", &at91sam9261_tcb_device.dev, "t2_clk");
      platform_device_register(&at91sam9261_tcb_device);
}
#else
static void __init at91_add_device_tc(void) { }
#endif


/* --------------------------------------------------------------------
 *  RTT
 * -------------------------------------------------------------------- */

static struct resource rtt_resources[] = {
      {
            .start      = AT91_BASE_SYS + AT91_RTT,
            .end  = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
            .flags      = IORESOURCE_MEM,
      }
};

static struct platform_device at91sam9261_rtt_device = {
      .name       = "at91_rtt",
      .id         = 0,
      .resource   = rtt_resources,
      .num_resources    = ARRAY_SIZE(rtt_resources),
};

static void __init at91_add_device_rtt(void)
{
      platform_device_register(&at91sam9261_rtt_device);
}


/* --------------------------------------------------------------------
 *  Watchdog
 * -------------------------------------------------------------------- */

#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91sam9261_wdt_device = {
      .name       = "at91_wdt",
      .id         = -1,
      .num_resources    = 0,
};

static void __init at91_add_device_watchdog(void)
{
      platform_device_register(&at91sam9261_wdt_device);
}
#else
static void __init at91_add_device_watchdog(void) {}
#endif


/* --------------------------------------------------------------------
 *  SSC -- Synchronous Serial Controller
 * -------------------------------------------------------------------- */

#if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
static u64 ssc0_dmamask = DMA_BIT_MASK(32);

static struct resource ssc0_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_SSC0,
            .end  = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_SSC0,
            .end  = AT91SAM9261_ID_SSC0,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_ssc0_device = {
      .name = "ssc",
      .id   = 0,
      .dev  = {
            .dma_mask         = &ssc0_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .resource   = ssc0_resources,
      .num_resources    = ARRAY_SIZE(ssc0_resources),
};

static inline void configure_ssc0_pins(unsigned pins)
{
      if (pins & ATMEL_SSC_TF)
            at91_set_A_periph(AT91_PIN_PB21, 1);
      if (pins & ATMEL_SSC_TK)
            at91_set_A_periph(AT91_PIN_PB22, 1);
      if (pins & ATMEL_SSC_TD)
            at91_set_A_periph(AT91_PIN_PB23, 1);
      if (pins & ATMEL_SSC_RD)
            at91_set_A_periph(AT91_PIN_PB24, 1);
      if (pins & ATMEL_SSC_RK)
            at91_set_A_periph(AT91_PIN_PB25, 1);
      if (pins & ATMEL_SSC_RF)
            at91_set_A_periph(AT91_PIN_PB26, 1);
}

static u64 ssc1_dmamask = DMA_BIT_MASK(32);

static struct resource ssc1_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_SSC1,
            .end  = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_SSC1,
            .end  = AT91SAM9261_ID_SSC1,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_ssc1_device = {
      .name = "ssc",
      .id   = 1,
      .dev  = {
            .dma_mask         = &ssc1_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .resource   = ssc1_resources,
      .num_resources    = ARRAY_SIZE(ssc1_resources),
};

static inline void configure_ssc1_pins(unsigned pins)
{
      if (pins & ATMEL_SSC_TF)
            at91_set_B_periph(AT91_PIN_PA17, 1);
      if (pins & ATMEL_SSC_TK)
            at91_set_B_periph(AT91_PIN_PA18, 1);
      if (pins & ATMEL_SSC_TD)
            at91_set_B_periph(AT91_PIN_PA19, 1);
      if (pins & ATMEL_SSC_RD)
            at91_set_B_periph(AT91_PIN_PA20, 1);
      if (pins & ATMEL_SSC_RK)
            at91_set_B_periph(AT91_PIN_PA21, 1);
      if (pins & ATMEL_SSC_RF)
            at91_set_B_periph(AT91_PIN_PA22, 1);
}

static u64 ssc2_dmamask = DMA_BIT_MASK(32);

static struct resource ssc2_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_SSC2,
            .end  = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_SSC2,
            .end  = AT91SAM9261_ID_SSC2,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device at91sam9261_ssc2_device = {
      .name = "ssc",
      .id   = 2,
      .dev  = {
            .dma_mask         = &ssc2_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .resource   = ssc2_resources,
      .num_resources    = ARRAY_SIZE(ssc2_resources),
};

static inline void configure_ssc2_pins(unsigned pins)
{
      if (pins & ATMEL_SSC_TF)
            at91_set_B_periph(AT91_PIN_PC25, 1);
      if (pins & ATMEL_SSC_TK)
            at91_set_B_periph(AT91_PIN_PC26, 1);
      if (pins & ATMEL_SSC_TD)
            at91_set_B_periph(AT91_PIN_PC27, 1);
      if (pins & ATMEL_SSC_RD)
            at91_set_B_periph(AT91_PIN_PC28, 1);
      if (pins & ATMEL_SSC_RK)
            at91_set_B_periph(AT91_PIN_PC29, 1);
      if (pins & ATMEL_SSC_RF)
            at91_set_B_periph(AT91_PIN_PC30, 1);
}

/*
 * SSC controllers are accessed through library code, instead of any
 * kind of all-singing/all-dancing driver.  For example one could be
 * used by a particular I2S audio codec's driver, while another one
 * on the same system might be used by a custom data capture driver.
 */
void __init at91_add_device_ssc(unsigned id, unsigned pins)
{
      struct platform_device *pdev;

      /*
       * NOTE: caller is responsible for passing information matching
       * "pins" to whatever will be using each particular controller.
       */
      switch (id) {
      case AT91SAM9261_ID_SSC0:
            pdev = &at91sam9261_ssc0_device;
            configure_ssc0_pins(pins);
            at91_clock_associate("ssc0_clk", &pdev->dev, "pclk");
            break;
      case AT91SAM9261_ID_SSC1:
            pdev = &at91sam9261_ssc1_device;
            configure_ssc1_pins(pins);
            at91_clock_associate("ssc1_clk", &pdev->dev, "pclk");
            break;
      case AT91SAM9261_ID_SSC2:
            pdev = &at91sam9261_ssc2_device;
            configure_ssc2_pins(pins);
            at91_clock_associate("ssc2_clk", &pdev->dev, "pclk");
            break;
      default:
            return;
      }

      platform_device_register(pdev);
}

#else
void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
#endif


/* --------------------------------------------------------------------
 *  UART
 * -------------------------------------------------------------------- */

#if defined(CONFIG_SERIAL_ATMEL)
static struct resource dbgu_resources[] = {
      [0] = {
            .start      = AT91_VA_BASE_SYS + AT91_DBGU,
            .end  = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91_ID_SYS,
            .end  = AT91_ID_SYS,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct atmel_uart_data dbgu_data = {
      .use_dma_tx = 0,
      .use_dma_rx = 0,        /* DBGU not capable of receive DMA */
      .regs       = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
};

static u64 dbgu_dmamask = DMA_BIT_MASK(32);

static struct platform_device at91sam9261_dbgu_device = {
      .name       = "atmel_usart",
      .id         = 0,
      .dev        = {
                        .dma_mask         = &dbgu_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &dbgu_data,
      },
      .resource   = dbgu_resources,
      .num_resources    = ARRAY_SIZE(dbgu_resources),
};

static inline void configure_dbgu_pins(void)
{
      at91_set_A_periph(AT91_PIN_PA9, 0);       /* DRXD */
      at91_set_A_periph(AT91_PIN_PA10, 1);            /* DTXD */
}

static struct resource uart0_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_US0,
            .end  = AT91SAM9261_BASE_US0 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_US0,
            .end  = AT91SAM9261_ID_US0,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct atmel_uart_data uart0_data = {
      .use_dma_tx = 1,
      .use_dma_rx = 1,
};

static u64 uart0_dmamask = DMA_BIT_MASK(32);

static struct platform_device at91sam9261_uart0_device = {
      .name       = "atmel_usart",
      .id         = 1,
      .dev        = {
                        .dma_mask         = &uart0_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &uart0_data,
      },
      .resource   = uart0_resources,
      .num_resources    = ARRAY_SIZE(uart0_resources),
};

static inline void configure_usart0_pins(unsigned pins)
{
      at91_set_A_periph(AT91_PIN_PC8, 1);       /* TXD0 */
      at91_set_A_periph(AT91_PIN_PC9, 0);       /* RXD0 */

      if (pins & ATMEL_UART_RTS)
            at91_set_A_periph(AT91_PIN_PC10, 0);      /* RTS0 */
      if (pins & ATMEL_UART_CTS)
            at91_set_A_periph(AT91_PIN_PC11, 0);      /* CTS0 */
}

static struct resource uart1_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_US1,
            .end  = AT91SAM9261_BASE_US1 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_US1,
            .end  = AT91SAM9261_ID_US1,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct atmel_uart_data uart1_data = {
      .use_dma_tx = 1,
      .use_dma_rx = 1,
};

static u64 uart1_dmamask = DMA_BIT_MASK(32);

static struct platform_device at91sam9261_uart1_device = {
      .name       = "atmel_usart",
      .id         = 2,
      .dev        = {
                        .dma_mask         = &uart1_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &uart1_data,
      },
      .resource   = uart1_resources,
      .num_resources    = ARRAY_SIZE(uart1_resources),
};

static inline void configure_usart1_pins(unsigned pins)
{
      at91_set_A_periph(AT91_PIN_PC12, 1);            /* TXD1 */
      at91_set_A_periph(AT91_PIN_PC13, 0);            /* RXD1 */

      if (pins & ATMEL_UART_RTS)
            at91_set_B_periph(AT91_PIN_PA12, 0);      /* RTS1 */
      if (pins & ATMEL_UART_CTS)
            at91_set_B_periph(AT91_PIN_PA13, 0);      /* CTS1 */
}

static struct resource uart2_resources[] = {
      [0] = {
            .start      = AT91SAM9261_BASE_US2,
            .end  = AT91SAM9261_BASE_US2 + SZ_16K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = AT91SAM9261_ID_US2,
            .end  = AT91SAM9261_ID_US2,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct atmel_uart_data uart2_data = {
      .use_dma_tx = 1,
      .use_dma_rx = 1,
};

static u64 uart2_dmamask = DMA_BIT_MASK(32);

static struct platform_device at91sam9261_uart2_device = {
      .name       = "atmel_usart",
      .id         = 3,
      .dev        = {
                        .dma_mask         = &uart2_dmamask,
                        .coherent_dma_mask      = DMA_BIT_MASK(32),
                        .platform_data          = &uart2_data,
      },
      .resource   = uart2_resources,
      .num_resources    = ARRAY_SIZE(uart2_resources),
};

static inline void configure_usart2_pins(unsigned pins)
{
      at91_set_A_periph(AT91_PIN_PC15, 0);            /* RXD2 */
      at91_set_A_periph(AT91_PIN_PC14, 1);            /* TXD2 */

      if (pins & ATMEL_UART_RTS)
            at91_set_B_periph(AT91_PIN_PA15, 0);      /* RTS2*/
      if (pins & ATMEL_UART_CTS)
            at91_set_B_periph(AT91_PIN_PA16, 0);      /* CTS2 */
}

static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART];   /* the UARTs to use */
struct platform_device *atmel_default_console_device; /* the serial console device */

void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
{
      struct platform_device *pdev;

      switch (id) {
            case 0:           /* DBGU */
                  pdev = &at91sam9261_dbgu_device;
                  configure_dbgu_pins();
                  at91_clock_associate("mck", &pdev->dev, "usart");
                  break;
            case AT91SAM9261_ID_US0:
                  pdev = &at91sam9261_uart0_device;
                  configure_usart0_pins(pins);
                  at91_clock_associate("usart0_clk", &pdev->dev, "usart");
                  break;
            case AT91SAM9261_ID_US1:
                  pdev = &at91sam9261_uart1_device;
                  configure_usart1_pins(pins);
                  at91_clock_associate("usart1_clk", &pdev->dev, "usart");
                  break;
            case AT91SAM9261_ID_US2:
                  pdev = &at91sam9261_uart2_device;
                  configure_usart2_pins(pins);
                  at91_clock_associate("usart2_clk", &pdev->dev, "usart");
                  break;
            default:
                  return;
      }
      pdev->id = portnr;            /* update to mapped ID */

      if (portnr < ATMEL_MAX_UART)
            at91_uarts[portnr] = pdev;
}

void __init at91_set_serial_console(unsigned portnr)
{
      if (portnr < ATMEL_MAX_UART)
            atmel_default_console_device = at91_uarts[portnr];
}

void __init at91_add_device_serial(void)
{
      int i;

      for (i = 0; i < ATMEL_MAX_UART; i++) {
            if (at91_uarts[i])
                  platform_device_register(at91_uarts[i]);
      }

      if (!atmel_default_console_device)
            printk(KERN_INFO "AT91: No default serial console defined.\n");
}
#else
void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
void __init at91_set_serial_console(unsigned portnr) {}
void __init at91_add_device_serial(void) {}
#endif


/* -------------------------------------------------------------------- */

/*
 * These devices are always present and don't need any board-specific
 * setup.
 */
static int __init at91_add_standard_devices(void)
{
      at91_add_device_rtt();
      at91_add_device_watchdog();
      at91_add_device_tc();
      return 0;
}

arch_initcall(at91_add_standard_devices);

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