arch/avr32/boards/mimc200/setup.c

   1 /*
   2  * Board-specific setup code for the MIMC200
   3  *
   4  * Copyright (C) 2008 Mercury IMC Ltd
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 extern struct atmel_lcdfb_info mimc200_lcdc_data;
  12
  13 #include <linux/clk.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/i2c-gpio.h>
  16 #include <linux/init.h>
  17 #include <linux/linkage.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/types.h>
  20 #include <linux/leds.h>
  21 #include <linux/spi/spi.h>
  22 #include <linux/spi/eeprom.h>
  23
  24 #include <video/atmel_lcdc.h>
  25 #include <linux/fb.h>
  26
  27 #include <linux/atmel-mci.h>
  28 #include <linux/io.h>
  29 #include <asm/setup.h>
  30
  31 #include <mach/at32ap700x.h>
  32 #include <mach/board.h>
  33 #include <mach/init.h>
  34 #include <mach/portmux.h>
  35
  36 /* Oscillator frequencies. These are board-specific */
  37 unsigned long at32_board_osc_rates[3] = {
  38         [0] = 32768,    /* 32.768 kHz on RTC osc */
  39         [1] = 10000000, /* 10 MHz on osc0 */
  40         [2] = 12000000, /* 12 MHz on osc1 */
  41 };
  42
  43 /* Initialized by bootloader-specific startup code. */
  44 struct tag *bootloader_tags __initdata;
  45
  46 static struct fb_videomode __initdata pt0434827_modes[] = {
  47         {
  48                 .name           = "480x272 @ 72",
  49                 .refresh        = 72,
  50                 .xres           = 480,          .yres           = 272,
  51                 .pixclock       = KHZ2PICOS(10000),
  52
  53                 .left_margin    = 1,            .right_margin   = 1,
  54                 .upper_margin   = 12,           .lower_margin   = 1,
  55                 .hsync_len      = 42,           .vsync_len      = 1,
  56
  57                 .sync           = 0,
  58                 .vmode          = FB_VMODE_NONINTERLACED,
  59         },
  60 };
  61
  62 static struct fb_monspecs __initdata mimc200_default_monspecs = {
  63         .manufacturer           = "PT",
  64         .monitor                = "PT0434827-A401",
  65         .modedb                 = pt0434827_modes,
  66         .modedb_len             = ARRAY_SIZE(pt0434827_modes),
  67         .hfmin                  = 14820,
  68         .hfmax                  = 22230,
  69         .vfmin                  = 60,
  70         .vfmax                  = 85,
  71         .dclkmax                = 25200000,
  72 };
  73
  74 struct atmel_lcdfb_info __initdata mimc200_lcdc_data = {
  75         .default_bpp            = 16,
  76         .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
  77         .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
  78                                    | ATMEL_LCDC_INVCLK
  79                                    | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
  80                                    | ATMEL_LCDC_MEMOR_BIG),
  81         .default_monspecs       = &mimc200_default_monspecs,
  82         .guard_time             = 2,
  83 };
  84
  85 struct eth_addr {
  86         u8 addr[6];
  87 };
  88 static struct eth_addr __initdata hw_addr[2];
  89 static struct macb_platform_data __initdata eth_data[2];
  90
  91 static struct spi_eeprom eeprom_25lc010 = {
  92                 .name = "25lc010",
  93                 .byte_len = 128,
  94                 .page_size = 16,
  95                 .flags = EE_ADDR1,
  96 };
  97
  98 static struct spi_board_info spi0_board_info[] __initdata = {
  99         {
 100                 .modalias       = "rtc-ds1390",
 101                 .max_speed_hz   = 4000000,
 102                 .chip_select    = 2,
 103         },
 104         {
 105                 .modalias       = "at25",
 106                 .max_speed_hz   = 1000000,
 107                 .chip_select    = 1,
 108                 .mode           = SPI_MODE_3,
 109                 .platform_data  = &eeprom_25lc010,
 110         },
 111 };
 112
 113 static struct mci_platform_data __initdata mci0_data = {
 114         .slot[0] = {
 115                 .bus_width      = 4,
 116                 .detect_pin     = GPIO_PIN_PA(26),
 117                 .wp_pin         = GPIO_PIN_PA(27),
 118         },
 119 };
 120
 121 /*
 122  * The next two functions should go away as the boot loader is
 123  * supposed to initialize the macb address registers with a valid
 124  * ethernet address. But we need to keep it around for a while until
 125  * we can be reasonably sure the boot loader does this.
 126  *
 127  * The phy_id is ignored as the driver will probe for it.
 128  */
 129 static int __init parse_tag_ethernet(struct tag *tag)
 130 {
 131         int i;
 132
 133         i = tag->u.ethernet.mac_index;
 134         if (i < ARRAY_SIZE(hw_addr))
 135                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
 136                        sizeof(hw_addr[i].addr));
 137
 138         return 0;
 139 }
 140 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
 141
 142 static void __init set_hw_addr(struct platform_device *pdev)
 143 {
 144         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 145         const u8 *addr;
 146         void __iomem *regs;
 147         struct clk *pclk;
 148
 149         if (!res)
 150                 return;
 151         if (pdev->id >= ARRAY_SIZE(hw_addr))
 152                 return;
 153
 154         addr = hw_addr[pdev->id].addr;
 155         if (!is_valid_ether_addr(addr))
 156                 return;
 157
 158         /*
 159          * Since this is board-specific code, we'll cheat and use the
 160          * physical address directly as we happen to know that it's
 161          * the same as the virtual address.
 162          */
 163         regs = (void __iomem __force *)res->start;
 164         pclk = clk_get(&pdev->dev, "pclk");
 165         if (IS_ERR(pclk))
 166                 return;
 167
 168         clk_enable(pclk);
 169         __raw_writel((addr[3] << 24) | (addr[2] << 16)
 170                      | (addr[1] << 8) | addr[0], regs + 0x98);
 171         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
 172         clk_disable(pclk);
 173         clk_put(pclk);
 174 }
 175
 176 void __init setup_board(void)
 177 {
 178         at32_map_usart(0, 0, 0);        /* USART 0: /dev/ttyS0 (TTL --> Altera) */
 179         at32_map_usart(1, 1, 0);        /* USART 1: /dev/ttyS1 (RS232) */
 180         at32_map_usart(2, 2, 0);        /* USART 2: /dev/ttyS2 (RS485) */
 181         at32_map_usart(3, 3, 0);        /* USART 3: /dev/ttyS3 (RS422 Multidrop) */
 182 }
 183
 184 static struct i2c_gpio_platform_data i2c_gpio_data = {
 185         .sda_pin                = GPIO_PIN_PA(6),
 186         .scl_pin                = GPIO_PIN_PA(7),
 187         .sda_is_open_drain      = 1,
 188         .scl_is_open_drain      = 1,
 189         .udelay                 = 2,    /* close to 100 kHz */
 190 };
 191
 192 static struct platform_device i2c_gpio_device = {
 193         .name           = "i2c-gpio",
 194         .id             = 0,
 195         .dev            = {
 196         .platform_data  = &i2c_gpio_data,
 197         },
 198 };
 199
 200 static struct i2c_board_info __initdata i2c_info[] = {
 201 };
 202
 203 static int __init mimc200_init(void)
 204 {
 205         /*
 206          * MIMC200 uses 16-bit SDRAM interface, so we don't need to
 207          * reserve any pins for it.
 208          */
 209
 210         at32_add_device_usart(0);
 211         at32_add_device_usart(1);
 212         at32_add_device_usart(2);
 213         at32_add_device_usart(3);
 214
 215         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 216         set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
 217
 218         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
 219         at32_add_device_mci(0, &mci0_data);
 220         at32_add_device_usba(0, NULL);
 221
 222         at32_select_periph(GPIO_PIOB_BASE, 1 << 28, 0, AT32_GPIOF_PULLUP);
 223         at32_select_gpio(i2c_gpio_data.sda_pin,
 224                 AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
 225         at32_select_gpio(i2c_gpio_data.scl_pin,
 226                 AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
 227         platform_device_register(&i2c_gpio_device);
 228         i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
 229
 230         at32_add_device_lcdc(0, &mimc200_lcdc_data,
 231                              fbmem_start, fbmem_size,
 232                              ATMEL_LCDC_CONTROL | ATMEL_LCDC_ALT_CONTROL | ATMEL_LCDC_ALT_24B_DATA);
 233
 234         return 0;
 235 }
 236 postcore_initcall(mimc200_init);