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platform.c

/*
 * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
 * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/init.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/ioport.h>
#include <linux/io.h>
#include <linux/vlynq.h>
#include <linux/leds.h>
#include <linux/string.h>
#include <linux/etherdevice.h>
#include <linux/phy.h>
#include <linux/phy_fixed.h>

#include <asm/addrspace.h>
#include <asm/mach-ar7/ar7.h>
#include <asm/mach-ar7/gpio.h>
#include <asm/mach-ar7/prom.h>

00043 struct plat_vlynq_data {
      struct plat_vlynq_ops ops;
      int gpio_bit;
      int reset_bit;
};


static int vlynq_on(struct vlynq_device *dev)
{
      int result;
      struct plat_vlynq_data *pdata = dev->dev.platform_data;

      result = gpio_request(pdata->gpio_bit, "vlynq");
      if (result)
            goto out;

      ar7_device_reset(pdata->reset_bit);

      result = ar7_gpio_disable(pdata->gpio_bit);
      if (result)
            goto out_enabled;

      result = ar7_gpio_enable(pdata->gpio_bit);
      if (result)
            goto out_enabled;

      result = gpio_direction_output(pdata->gpio_bit, 0);
      if (result)
            goto out_gpio_enabled;

      msleep(50);

      gpio_set_value(pdata->gpio_bit, 1);
      msleep(50);

      return 0;

out_gpio_enabled:
      ar7_gpio_disable(pdata->gpio_bit);
out_enabled:
      ar7_device_disable(pdata->reset_bit);
      gpio_free(pdata->gpio_bit);
out:
      return result;
}

static void vlynq_off(struct vlynq_device *dev)
{
      struct plat_vlynq_data *pdata = dev->dev.platform_data;
      ar7_gpio_disable(pdata->gpio_bit);
      gpio_free(pdata->gpio_bit);
      ar7_device_disable(pdata->reset_bit);
}

static struct resource physmap_flash_resource = {
      .name = "mem",
      .flags = IORESOURCE_MEM,
      .start = 0x10000000,
      .end = 0x107fffff,
};

static struct resource cpmac_low_res[] = {
      {
            .name = "regs",
            .flags = IORESOURCE_MEM,
            .start = AR7_REGS_MAC0,
            .end = AR7_REGS_MAC0 + 0x7ff,
      },
      {
            .name = "irq",
            .flags = IORESOURCE_IRQ,
            .start = 27,
            .end = 27,
      },
};

static struct resource cpmac_high_res[] = {
      {
            .name = "regs",
            .flags = IORESOURCE_MEM,
            .start = AR7_REGS_MAC1,
            .end = AR7_REGS_MAC1 + 0x7ff,
      },
      {
            .name = "irq",
            .flags = IORESOURCE_IRQ,
            .start = 41,
            .end = 41,
      },
};

static struct resource vlynq_low_res[] = {
      {
            .name = "regs",
            .flags = IORESOURCE_MEM,
            .start = AR7_REGS_VLYNQ0,
            .end = AR7_REGS_VLYNQ0 + 0xff,
      },
      {
            .name = "irq",
            .flags = IORESOURCE_IRQ,
            .start = 29,
            .end = 29,
      },
      {
            .name = "mem",
            .flags = IORESOURCE_MEM,
            .start = 0x04000000,
            .end = 0x04ffffff,
      },
      {
            .name = "devirq",
            .flags = IORESOURCE_IRQ,
            .start = 80,
            .end = 111,
      },
};

static struct resource vlynq_high_res[] = {
      {
            .name = "regs",
            .flags = IORESOURCE_MEM,
            .start = AR7_REGS_VLYNQ1,
            .end = AR7_REGS_VLYNQ1 + 0xff,
      },
      {
            .name = "irq",
            .flags = IORESOURCE_IRQ,
            .start = 33,
            .end = 33,
      },
      {
            .name = "mem",
            .flags = IORESOURCE_MEM,
            .start = 0x0c000000,
            .end = 0x0cffffff,
      },
      {
            .name = "devirq",
            .flags = IORESOURCE_IRQ,
            .start = 112,
            .end = 143,
      },
};

static struct resource usb_res[] = {
      {
            .name = "regs",
            .flags = IORESOURCE_MEM,
            .start = AR7_REGS_USB,
            .end = AR7_REGS_USB + 0xff,
      },
      {
            .name = "irq",
            .flags = IORESOURCE_IRQ,
            .start = 32,
            .end = 32,
      },
      {
            .name = "mem",
            .flags = IORESOURCE_MEM,
            .start = 0x03400000,
            .end = 0x034001fff,
      },
};

static struct physmap_flash_data physmap_flash_data = {
      .width = 2,
};

static struct fixed_phy_status fixed_phy_status __initdata = {
      .link = 1,
      .speed = 100,
      .duplex = 1,
};

static struct plat_cpmac_data cpmac_low_data = {
      .reset_bit = 17,
      .power_bit = 20,
      .phy_mask = 0x80000000,
};

static struct plat_cpmac_data cpmac_high_data = {
      .reset_bit = 21,
      .power_bit = 22,
      .phy_mask = 0x7fffffff,
};

static struct plat_vlynq_data vlynq_low_data = {
      .ops.on = vlynq_on,
      .ops.off = vlynq_off,
      .reset_bit = 20,
      .gpio_bit = 18,
};

static struct plat_vlynq_data vlynq_high_data = {
      .ops.on = vlynq_on,
      .ops.off = vlynq_off,
      .reset_bit = 16,
      .gpio_bit = 19,
};

static struct platform_device physmap_flash = {
      .id = 0,
      .name = "physmap-flash",
      .dev.platform_data = &physmap_flash_data,
      .resource = &physmap_flash_resource,
      .num_resources = 1,
};

static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
static struct platform_device cpmac_low = {
      .id = 0,
      .name = "cpmac",
      .dev = {
            .dma_mask = &cpmac_dma_mask,
            .coherent_dma_mask = DMA_BIT_MASK(32),
            .platform_data = &cpmac_low_data,
      },
      .resource = cpmac_low_res,
      .num_resources = ARRAY_SIZE(cpmac_low_res),
};

static struct platform_device cpmac_high = {
      .id = 1,
      .name = "cpmac",
      .dev = {
            .dma_mask = &cpmac_dma_mask,
            .coherent_dma_mask = DMA_BIT_MASK(32),
            .platform_data = &cpmac_high_data,
      },
      .resource = cpmac_high_res,
      .num_resources = ARRAY_SIZE(cpmac_high_res),
};

static struct platform_device vlynq_low = {
      .id = 0,
      .name = "vlynq",
      .dev.platform_data = &vlynq_low_data,
      .resource = vlynq_low_res,
      .num_resources = ARRAY_SIZE(vlynq_low_res),
};

static struct platform_device vlynq_high = {
      .id = 1,
      .name = "vlynq",
      .dev.platform_data = &vlynq_high_data,
      .resource = vlynq_high_res,
      .num_resources = ARRAY_SIZE(vlynq_high_res),
};


static struct gpio_led default_leds[] = {
      {
            .name = "status",
            .gpio = 8,
            .active_low = 1,
      },
};

static struct gpio_led dsl502t_leds[] = {
      {
            .name = "status",
            .gpio = 9,
            .active_low = 1,
      },
      {
            .name = "ethernet",
            .gpio = 7,
            .active_low = 1,
      },
      {
            .name = "usb",
            .gpio = 12,
            .active_low = 1,
      },
};

static struct gpio_led dg834g_leds[] = {
      {
            .name = "ppp",
            .gpio = 6,
            .active_low = 1,
      },
      {
            .name = "status",
            .gpio = 7,
            .active_low = 1,
      },
      {
            .name = "adsl",
            .gpio = 8,
            .active_low = 1,
      },
      {
            .name = "wifi",
            .gpio = 12,
            .active_low = 1,
      },
      {
            .name = "power",
            .gpio = 14,
            .active_low = 1,
            .default_trigger = "default-on",
      },
};

static struct gpio_led fb_sl_leds[] = {
      {
            .name = "1",
            .gpio = 7,
      },
      {
            .name = "2",
            .gpio = 13,
            .active_low = 1,
      },
      {
            .name = "3",
            .gpio = 10,
            .active_low = 1,
      },
      {
            .name = "4",
            .gpio = 12,
            .active_low = 1,
      },
      {
            .name = "5",
            .gpio = 9,
            .active_low = 1,
      },
};

static struct gpio_led fb_fon_leds[] = {
      {
            .name = "1",
            .gpio = 8,
      },
      {
            .name = "2",
            .gpio = 3,
            .active_low = 1,
      },
      {
            .name = "3",
            .gpio = 5,
      },
      {
            .name = "4",
            .gpio = 4,
            .active_low = 1,
      },
      {
            .name = "5",
            .gpio = 11,
            .active_low = 1,
      },
};

static struct gpio_led_platform_data ar7_led_data;

static struct platform_device ar7_gpio_leds = {
      .name = "leds-gpio",
      .id = -1,
      .dev = {
            .platform_data = &ar7_led_data,
      }
};

static struct platform_device ar7_udc = {
      .id = -1,
      .name = "ar7_udc",
      .resource = usb_res,
      .num_resources = ARRAY_SIZE(usb_res),
};

static struct resource ar7_wdt_res = {
      .name = "regs",
      .start = -1, /* Filled at runtime */
      .end = -1, /* Filled at runtime */
      .flags = IORESOURCE_MEM,
};

static struct platform_device ar7_wdt = {
      .id = -1,
      .name  = "ar7_wdt",
      .resource = &ar7_wdt_res,
      .num_resources = 1,
};

static inline unsigned char char2hex(char h)
{
      switch (h) {
      case '0': case '1': case '2': case '3': case '4':
      case '5': case '6': case '7': case '8': case '9':
            return h - '0';
      case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
            return h - 'A' + 10;
      case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
            return h - 'a' + 10;
      default:
            return 0;
      }
}

static void cpmac_get_mac(int instance, unsigned char *dev_addr)
{
      int i;
      char name[5], default_mac[ETH_ALEN], *mac;

      mac = NULL;
      sprintf(name, "mac%c", 'a' + instance);
      mac = prom_getenv(name);
      if (!mac) {
            sprintf(name, "mac%c", 'a');
            mac = prom_getenv(name);
      }
      if (!mac) {
            random_ether_addr(default_mac);
            mac = default_mac;
      }
      for (i = 0; i < 6; i++)
            dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
                  char2hex(mac[i * 3 + 1]);
}

static void __init detect_leds(void)
{
      char *prid, *usb_prod;

      /* Default LEDs   */
      ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
      ar7_led_data.leds = default_leds;

      /* FIXME: the whole thing is unreliable */
      prid = prom_getenv("ProductID");
      usb_prod = prom_getenv("usb_prod");

      /* If we can't get the product id from PROM, use the default LEDs */
      if (!prid)
            return;

      if (strstr(prid, "Fritz_Box_FON")) {
            ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
            ar7_led_data.leds = fb_fon_leds;
      } else if (strstr(prid, "Fritz_Box_")) {
            ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
            ar7_led_data.leds = fb_sl_leds;
      } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
            && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
            ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
            ar7_led_data.leds = dsl502t_leds;
      } else if (strstr(prid, "DG834")) {
            ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
            ar7_led_data.leds = dg834g_leds;
      }
}

static int __init ar7_register_devices(void)
{
      u16 chip_id;
      int res;
      u32 *bootcr, val;
#ifdef CONFIG_SERIAL_8250
      static struct uart_port uart_port[2];

      memset(uart_port, 0, sizeof(struct uart_port) * 2);

      uart_port[0].type = PORT_16550A;
      uart_port[0].line = 0;
      uart_port[0].irq = AR7_IRQ_UART0;
      uart_port[0].uartclk = ar7_bus_freq() / 2;
      uart_port[0].iotype = UPIO_MEM32;
      uart_port[0].mapbase = AR7_REGS_UART0;
      uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
      uart_port[0].regshift = 2;
      res = early_serial_setup(&uart_port[0]);
      if (res)
            return res;


      /* Only TNETD73xx have a second serial port */
      if (ar7_has_second_uart()) {
            uart_port[1].type = PORT_16550A;
            uart_port[1].line = 1;
            uart_port[1].irq = AR7_IRQ_UART1;
            uart_port[1].uartclk = ar7_bus_freq() / 2;
            uart_port[1].iotype = UPIO_MEM32;
            uart_port[1].mapbase = UR8_REGS_UART1;
            uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
            uart_port[1].regshift = 2;
            res = early_serial_setup(&uart_port[1]);
            if (res)
                  return res;
      }
#endif /* CONFIG_SERIAL_8250 */
      res = platform_device_register(&physmap_flash);
      if (res)
            return res;

      ar7_device_disable(vlynq_low_data.reset_bit);
      res = platform_device_register(&vlynq_low);
      if (res)
            return res;

      if (ar7_has_high_vlynq()) {
            ar7_device_disable(vlynq_high_data.reset_bit);
            res = platform_device_register(&vlynq_high);
            if (res)
                  return res;
      }

      if (ar7_has_high_cpmac()) {
            res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
            if (res && res != -ENODEV)
                  return res;
            cpmac_get_mac(1, cpmac_high_data.dev_addr);
            res = platform_device_register(&cpmac_high);
            if (res)
                  return res;
      } else {
            cpmac_low_data.phy_mask = 0xffffffff;
      }

      res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
      if (res && res != -ENODEV)
            return res;

      cpmac_get_mac(0, cpmac_low_data.dev_addr);
      res = platform_device_register(&cpmac_low);
      if (res)
            return res;

      detect_leds();
      res = platform_device_register(&ar7_gpio_leds);
      if (res)
            return res;

      res = platform_device_register(&ar7_udc);

      chip_id = ar7_chip_id();
      switch (chip_id) {
      case AR7_CHIP_7100:
      case AR7_CHIP_7200:
            ar7_wdt_res.start = AR7_REGS_WDT;
            break;
      case AR7_CHIP_7300:
            ar7_wdt_res.start = UR8_REGS_WDT;
            break;
      default:
            break;
      }

      ar7_wdt_res.end = ar7_wdt_res.start + 0x20;

      bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4);
      val = *bootcr;
      iounmap(bootcr);

      /* Register watchdog only if enabled in hardware */
      if (val & AR7_WDT_HW_ENA)
            res = platform_device_register(&ar7_wdt);

      return res;
}
arch_initcall(ar7_register_devices);

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