target/linux/adm5120/files/arch/mips/adm5120/mikrotik/rb-150.c

   1 /*
   2  *  Mikrotik RouterBOARD 150 support
   3  *
   4  *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify it
   7  *  under the terms of the GNU General Public License version 2 as published
   8  *  by the Free Software Foundation.
   9  *
  10  */
  11
  12 #include "rb-1xx.h"
  13
  14 #define RB150_NAND_BASE         0x1FC80000
  15 #define RB150_NAND_SIZE         1
  16
  17 #define RB150_GPIO_NAND_READY   ADM5120_GPIO_PIN0
  18 #define RB150_GPIO_NAND_NCE     ADM5120_GPIO_PIN1
  19 #define RB150_GPIO_NAND_CLE     ADM5120_GPIO_P2L2
  20 #define RB150_GPIO_NAND_ALE     ADM5120_GPIO_P3L2
  21 #define RB150_GPIO_RESET_BUTTON ADM5120_GPIO_PIN1 /* FIXME */
  22
  23 #define RB150_GPIO_DEV_MASK     ( 1 << RB150_GPIO_NAND_READY    \
  24                                 | 1 << RB150_GPIO_NAND_NCE      \
  25                                 | 1 << RB150_GPIO_NAND_CLE      \
  26                                 | 1 << RB150_GPIO_NAND_ALE)
  27
  28 #define RB150_NAND_DELAY        100
  29
  30 #define RB150_NAND_WRITE(v) \
  31         writeb((v), (void __iomem *)KSEG1ADDR(RB150_NAND_BASE))
  32
  33 static struct resource rb150_nand_resources[] __initdata = {
  34         [0] = {
  35                 .start  = RB150_NAND_BASE,
  36                 .end    = RB150_NAND_BASE + RB150_NAND_SIZE-1,
  37                 .flags  = IORESOURCE_MEM,
  38         },
  39 };
  40
  41 static struct gpio_led rb150_gpio_leds[] __initdata = {
  42         GPIO_LED_STD(ADM5120_GPIO_P0L2, "user",         NULL),
  43         GPIO_LED_INV(ADM5120_GPIO_P0L1, "lan1_led1",    NULL),
  44         GPIO_LED_INV(ADM5120_GPIO_P0L0, "lan1_led2",    NULL),
  45         GPIO_LED_INV(ADM5120_GPIO_P1L1, "lan5_led1",    NULL),
  46         GPIO_LED_INV(ADM5120_GPIO_P1L0, "lan5_led2",    NULL),
  47         GPIO_LED_INV(ADM5120_GPIO_P2L1, "lan4_led1",    NULL),
  48         GPIO_LED_INV(ADM5120_GPIO_P2L0, "lan4_led2",    NULL),
  49         GPIO_LED_INV(ADM5120_GPIO_P3L1, "lan3_led1",    NULL),
  50         GPIO_LED_INV(ADM5120_GPIO_P3L0, "lan3_led2",    NULL),
  51         GPIO_LED_INV(ADM5120_GPIO_P4L1, "lan2_led1",    NULL),
  52         GPIO_LED_INV(ADM5120_GPIO_P4L0, "lan2_led2",    NULL),
  53 };
  54
  55 static u8 rb150_vlans[6] __initdata = {
  56         0x7F, 0x00, 0x00, 0x00, 0x00, 0x00
  57 };
  58
  59 static int rb150_nand_dev_ready(struct mtd_info *mtd)
  60 {
  61         return gpio_get_value(RB150_GPIO_NAND_READY);
  62 }
  63
  64 static void rb150_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
  65                 unsigned int ctrl)
  66 {
  67         if (ctrl & NAND_CTRL_CHANGE) {
  68                 gpio_set_value(RB150_GPIO_NAND_CLE, (ctrl & NAND_CLE) ? 1 : 0);
  69                 gpio_set_value(RB150_GPIO_NAND_ALE, (ctrl & NAND_ALE) ? 1 : 0);
  70                 gpio_set_value(RB150_GPIO_NAND_NCE, (ctrl & NAND_NCE) ? 0 : 1);
  71         }
  72
  73         udelay(RB150_NAND_DELAY);
  74
  75         if (cmd != NAND_CMD_NONE)
  76                 RB150_NAND_WRITE(cmd);
  77 }
  78
  79 static void __init rb150_add_device_nand(void)
  80 {
  81         struct platform_device *pdev;
  82         int err;
  83
  84         /* setup GPIO pins for NAND flash chip */
  85         gpio_request(RB150_GPIO_NAND_READY, "nand-ready");
  86         gpio_direction_input(RB150_GPIO_NAND_READY);
  87         gpio_request(RB150_GPIO_NAND_NCE, "nand-nce");
  88         gpio_direction_output(RB150_GPIO_NAND_NCE, 1);
  89         gpio_request(RB150_GPIO_NAND_CLE, "nand-cle");
  90         gpio_direction_output(RB150_GPIO_NAND_CLE, 0);
  91         gpio_request(RB150_GPIO_NAND_ALE, "nand-ale");
  92         gpio_direction_output(RB150_GPIO_NAND_ALE, 0);
  93
  94         pdev = platform_device_alloc("gen_nand", -1);
  95         if (!pdev)
  96                 goto err_out;
  97
  98         err = platform_device_add_resources(pdev, rb150_nand_resources,
  99                                         ARRAY_SIZE(rb150_nand_resources));
 100         if (err)
 101                 goto err_put;
 102
 103
 104         rb1xx_nand_data.ctrl.cmd_ctrl = rb150_nand_cmd_ctrl;
 105         rb1xx_nand_data.ctrl.dev_ready = rb150_nand_dev_ready;
 106
 107         err = platform_device_add_data(pdev, &rb1xx_nand_data,
 108                                         sizeof(rb1xx_nand_data));
 109         if (err)
 110                 goto err_put;
 111
 112         err = platform_device_add(pdev);
 113         if (err)
 114                 goto err_put;
 115
 116         return;
 117
 118 err_put:
 119         platform_device_put(pdev);
 120 err_out:
 121         return;
 122 }
 123
 124 static void __init rb150_setup(void)
 125 {
 126         rb1xx_gpio_buttons[0].gpio = RB150_GPIO_RESET_BUTTON;
 127         rb1xx_generic_setup();
 128         rb150_add_device_nand();
 129
 130         adm5120_add_device_gpio(RB150_GPIO_DEV_MASK);
 131         adm5120_add_device_gpio_leds(ARRAY_SIZE(rb150_gpio_leds),
 132                                         rb150_gpio_leds);
 133         adm5120_add_device_switch(5, rb150_vlans);
 134 }
 135
 136 ADM5120_BOARD(MACH_ADM5120_RB_150, "Mikrotik RouterBOARD 150", rb150_setup);