release/src-rt-6.x.4708/linux/linux-2.6.36/arch/avr32/boards/hammerhead/setup.c

   1 /*
   2  * Board-specific setup code for the Miromico Hammerhead board
   3  *
   4  * Copyright (C) 2008 Miromico AG
   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 #include <linux/atmel-mci.h>
  11 #include <linux/clk.h>
  12 #include <linux/fb.h>
  13 #include <linux/etherdevice.h>
  14 #include <linux/i2c.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/spi/spi.h>
  21
  22 #include <video/atmel_lcdc.h>
  23
  24 #include <linux/io.h>
  25 #include <asm/setup.h>
  26
  27 #include <mach/at32ap700x.h>
  28 #include <mach/board.h>
  29 #include <mach/init.h>
  30 #include <mach/portmux.h>
  31
  32 #include <sound/atmel-ac97c.h>
  33
  34 #include "../../mach-at32ap/clock.h"
  35 #include "flash.h"
  36
  37 /* Oscillator frequencies. These are board-specific */
  38 unsigned long at32_board_osc_rates[3] = {
  39         [0] = 32768,    /* 32.768 kHz on RTC osc */
  40         [1] = 25000000, /* 25MHz on osc0 */
  41         [2] = 12000000, /* 12 MHz on osc1 */
  42 };
  43
  44 /* Initialized by bootloader-specific startup code. */
  45 struct tag *bootloader_tags __initdata;
  46
  47 #ifdef CONFIG_BOARD_HAMMERHEAD_LCD
  48 static struct fb_videomode __initdata hda350tlv_modes[] = {
  49         {
  50                 .name           = "320x240 @ 75",
  51                 .refresh        = 75,
  52                 .xres           = 320,
  53                 .yres           = 240,
  54                 .pixclock       = KHZ2PICOS(6891),
  55
  56                 .left_margin    = 48,
  57                 .right_margin   = 18,
  58                 .upper_margin   = 18,
  59                 .lower_margin   = 4,
  60                 .hsync_len      = 20,
  61                 .vsync_len      = 2,
  62
  63                 .sync           = 0,
  64                 .vmode          = FB_VMODE_NONINTERLACED,
  65         },
  66 };
  67
  68 static struct fb_monspecs __initdata hammerhead_hda350t_monspecs = {
  69         .manufacturer           = "HAN",
  70         .monitor                = "HDA350T-LV",
  71         .modedb                 = hda350tlv_modes,
  72         .modedb_len             = ARRAY_SIZE(hda350tlv_modes),
  73         .hfmin                  = 14900,
  74         .hfmax                  = 22350,
  75         .vfmin                  = 60,
  76         .vfmax                  = 90,
  77         .dclkmax                = 10000000,
  78 };
  79
  80 struct atmel_lcdfb_info __initdata hammerhead_lcdc_data = {
  81         .default_bpp            = 24,
  82         .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
  83         .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
  84                                    | ATMEL_LCDC_INVCLK
  85                                    | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
  86                                    | ATMEL_LCDC_MEMOR_BIG),
  87         .default_monspecs       = &hammerhead_hda350t_monspecs,
  88         .guard_time             = 2,
  89 };
  90 #endif
  91
  92 static struct mci_platform_data __initdata mci0_data = {
  93         .slot[0] = {
  94                 .bus_width      = 4,
  95                 .detect_pin     = -ENODEV,
  96                 .wp_pin         = -ENODEV,
  97         },
  98 };
  99
 100 struct eth_addr {
 101         u8 addr[6];
 102 };
 103
 104 static struct eth_addr __initdata hw_addr[1];
 105 static struct eth_platform_data __initdata eth_data[1];
 106
 107 /*
 108  * The next two functions should go away as the boot loader is
 109  * supposed to initialize the macb address registers with a valid
 110  * ethernet address. But we need to keep it around for a while until
 111  * we can be reasonably sure the boot loader does this.
 112  *
 113  * The phy_id is ignored as the driver will probe for it.
 114  */
 115 static int __init parse_tag_ethernet(struct tag *tag)
 116 {
 117         int i = tag->u.ethernet.mac_index;
 118
 119         if (i < ARRAY_SIZE(hw_addr))
 120                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
 121                        sizeof(hw_addr[i].addr));
 122
 123         return 0;
 124 }
 125 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
 126
 127 static void __init set_hw_addr(struct platform_device *pdev)
 128 {
 129         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 130         const u8 *addr;
 131         void __iomem *regs;
 132         struct clk *pclk;
 133
 134         if (!res)
 135                 return;
 136
 137         if (pdev->id >= ARRAY_SIZE(hw_addr))
 138                 return;
 139
 140         addr = hw_addr[pdev->id].addr;
 141
 142         if (!is_valid_ether_addr(addr))
 143                 return;
 144
 145         /*
 146          * Since this is board-specific code, we'll cheat and use the
 147          * physical address directly as we happen to know that it's
 148          * the same as the virtual address.
 149          */
 150         regs = (void __iomem __force *)res->start;
 151         pclk = clk_get(&pdev->dev, "pclk");
 152
 153         if (!pclk)
 154                 return;
 155
 156         clk_enable(pclk);
 157
 158         __raw_writel((addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) |
 159                      addr[0], regs + 0x98);
 160         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
 161
 162         clk_disable(pclk);
 163         clk_put(pclk);
 164 }
 165
 166 void __init setup_board(void)
 167 {
 168         at32_map_usart(1, 0, 0);        /* USART 1: /dev/ttyS0, DB9 */
 169         at32_setup_serial_console(0);
 170 }
 171
 172 static struct i2c_gpio_platform_data i2c_gpio_data = {
 173         .sda_pin                = GPIO_PIN_PA(6),
 174         .scl_pin                = GPIO_PIN_PA(7),
 175         .sda_is_open_drain      = 1,
 176         .scl_is_open_drain      = 1,
 177         .udelay                 = 2,    /* close to 100 kHz */
 178 };
 179
 180 static struct platform_device i2c_gpio_device = {
 181         .name           = "i2c-gpio",
 182         .id             = 0,
 183         .dev            = { .platform_data = &i2c_gpio_data, },
 184 };
 185
 186 static struct i2c_board_info __initdata i2c_info[] = {};
 187
 188 #ifdef CONFIG_BOARD_HAMMERHEAD_SND
 189 static struct ac97c_platform_data ac97c_data = {
 190         .reset_pin = GPIO_PIN_PA(16),
 191 };
 192 #endif
 193
 194 static int __init hammerhead_init(void)
 195 {
 196         /*
 197          * Hammerhead uses 32-bit SDRAM interface. Reserve the
 198          * SDRAM-specific pins so that nobody messes with them.
 199          */
 200         at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
 201
 202         at32_add_device_usart(0);
 203
 204         /* Reserve PB29 (GCLK3). This pin is used as clock source
 205          * for ETH PHY (25MHz). GCLK3 setup is done by U-Boot.
 206          */
 207         at32_reserve_pin(GPIO_PIOB_BASE, (1<<29));
 208
 209         /*
 210          * Hammerhead uses only one ethernet port, so we don't set
 211          * address of second port
 212          */
 213         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 214
 215 #ifdef CONFIG_BOARD_HAMMERHEAD_FPGA
 216         at32_add_device_hh_fpga();
 217 #endif
 218         at32_add_device_mci(0, &mci0_data);
 219
 220 #ifdef CONFIG_BOARD_HAMMERHEAD_USB
 221         at32_add_device_usba(0, NULL);
 222 #endif
 223 #ifdef CONFIG_BOARD_HAMMERHEAD_LCD
 224         at32_add_device_lcdc(0, &hammerhead_lcdc_data, fbmem_start,
 225                              fbmem_size, ATMEL_LCDC_PRI_24BIT);
 226 #endif
 227
 228         at32_select_gpio(i2c_gpio_data.sda_pin,
 229                          AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT |
 230                          AT32_GPIOF_HIGH);
 231         at32_select_gpio(i2c_gpio_data.scl_pin,
 232                          AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT |
 233                          AT32_GPIOF_HIGH);
 234         platform_device_register(&i2c_gpio_device);
 235         i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
 236
 237 #ifdef CONFIG_BOARD_HAMMERHEAD_SND
 238         at32_add_device_ac97c(0, &ac97c_data, AC97C_BOTH);
 239 #endif
 240
 241         /* Select the Touchscreen interrupt pin mode */
 242         at32_select_periph(GPIO_PIOB_BASE, 0x08000000, GPIO_PERIPH_A, 0);
 243
 244         return 0;
 245 }
 246
 247 postcore_initcall(hammerhead_init);