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