arch/avr32/boards/atstk1000/atstk1002.c

   1 /*
   2  * ATSTK1002 daughterboard-specific init code
   3  *
   4  * Copyright (C) 2005-2006 Atmel Corporation
   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/clk.h>
  11 #include <linux/etherdevice.h>
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/leds.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/string.h>
  17 #include <linux/types.h>
  18 #include <linux/spi/spi.h>
  19
  20 #include <video/atmel_lcdc.h>
  21
  22 #include <asm/io.h>
  23 #include <asm/setup.h>
  24 #include <asm/arch/at32ap7000.h>
  25 #include <asm/arch/board.h>
  26 #include <asm/arch/init.h>
  27 #include <asm/arch/portmux.h>
  28
  29 #include "atstk1000.h"
  30
  31
  32 struct eth_addr {
  33         u8 addr[6];
  34 };
  35
  36 static struct eth_addr __initdata hw_addr[2];
  37 static struct eth_platform_data __initdata eth_data[2] = {
  38         {
  39                 /*
  40                  * The MDIO pullups on STK1000 are a bit too weak for
  41                  * the autodetection to work properly, so we have to
  42                  * mask out everything but the correct address.
  43                  */
  44                 .phy_mask       = ~(1U << 16),
  45         },
  46         {
  47                 .phy_mask       = ~(1U << 17),
  48         },
  49 };
  50
  51 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
  52 static struct spi_board_info spi0_board_info[] __initdata = {
  53         {
  54                 /* QVGA display */
  55                 .modalias       = "ltv350qv",
  56                 .max_speed_hz   = 16000000,
  57                 .chip_select    = 1,
  58                 .mode           = SPI_MODE_3,
  59         },
  60 };
  61 #endif
  62
  63 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
  64 static struct spi_board_info spi1_board_info[] __initdata = { {
  65         /* patch in custom entries here */
  66 } };
  67 #endif
  68
  69 /*
  70  * The next two functions should go away as the boot loader is
  71  * supposed to initialize the macb address registers with a valid
  72  * ethernet address. But we need to keep it around for a while until
  73  * we can be reasonably sure the boot loader does this.
  74  *
  75  * The phy_id is ignored as the driver will probe for it.
  76  */
  77 static int __init parse_tag_ethernet(struct tag *tag)
  78 {
  79         int i;
  80
  81         i = tag->u.ethernet.mac_index;
  82         if (i < ARRAY_SIZE(hw_addr))
  83                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
  84                        sizeof(hw_addr[i].addr));
  85
  86         return 0;
  87 }
  88 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
  89
  90 static void __init set_hw_addr(struct platform_device *pdev)
  91 {
  92         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  93         const u8 *addr;
  94         void __iomem *regs;
  95         struct clk *pclk;
  96
  97         if (!res)
  98                 return;
  99         if (pdev->id >= ARRAY_SIZE(hw_addr))
 100                 return;
 101
 102         addr = hw_addr[pdev->id].addr;
 103         if (!is_valid_ether_addr(addr))
 104                 return;
 105
 106         /*
 107          * Since this is board-specific code, we'll cheat and use the
 108          * physical address directly as we happen to know that it's
 109          * the same as the virtual address.
 110          */
 111         regs = (void __iomem __force *)res->start;
 112         pclk = clk_get(&pdev->dev, "pclk");
 113         if (!pclk)
 114                 return;
 115
 116         clk_enable(pclk);
 117         __raw_writel((addr[3] << 24) | (addr[2] << 16)
 118                      | (addr[1] << 8) | addr[0], regs + 0x98);
 119         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
 120         clk_disable(pclk);
 121         clk_put(pclk);
 122 }
 123
 124 #ifdef CONFIG_BOARD_ATSTK1002_J2_LED
 125
 126 static struct gpio_led stk_j2_led[] = {
 127 #ifdef CONFIG_BOARD_ATSTK1002_J2_LED8
 128 #define LEDSTRING "J2 jumpered to LED8"
 129         { .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
 130         { .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
 131         { .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
 132         { .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
 133         { .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
 134         { .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
 135         { .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
 136         { .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
 137                         .default_trigger = "heartbeat", },
 138 #else   /* RGB */
 139 #define LEDSTRING "J2 jumpered to RGB LEDs"
 140         { .name = "r1:red",     .gpio = GPIO_PIN_PB( 8), },
 141         { .name = "g1:green",   .gpio = GPIO_PIN_PB(10), },
 142         { .name = "b1:blue",    .gpio = GPIO_PIN_PB(14), },
 143
 144         { .name = "r2:red",     .gpio = GPIO_PIN_PB( 9),
 145                         .default_trigger = "heartbeat", },
 146         { .name = "g2:green",   .gpio = GPIO_PIN_PB(13), },
 147         { .name = "b2:blue",    .gpio = GPIO_PIN_PB(15),
 148                         .default_trigger = "heartbeat", },
 149         /* PB16, PB30 unused */
 150 #endif
 151 };
 152
 153 static struct gpio_led_platform_data stk_j2_led_data = {
 154         .num_leds       = ARRAY_SIZE(stk_j2_led),
 155         .leds           = stk_j2_led,
 156 };
 157
 158 static struct platform_device stk_j2_led_dev = {
 159         .name           = "leds-gpio",
 160         .id             = 2,    /* gpio block J2 */
 161         .dev            = {
 162                 .platform_data  = &stk_j2_led_data,
 163         },
 164 };
 165
 166 static void setup_j2_leds(void)
 167 {
 168         unsigned        i;
 169
 170         for (i = 0; i < ARRAY_SIZE(stk_j2_led); i++)
 171                 at32_select_gpio(stk_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
 172
 173         printk("STK1002: " LEDSTRING "\n");
 174         platform_device_register(&stk_j2_led_dev);
 175 }
 176
 177 #else
 178 static void setup_j2_leds(void)
 179 {
 180 }
 181 #endif
 182
 183 void __init setup_board(void)
 184 {
 185 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
 186         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
 187 #else
 188         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
 189 #endif
 190         /* USART 2/unused: expansion connector */
 191         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
 192
 193         at32_setup_serial_console(0);
 194 }
 195
 196 static int __init atstk1002_init(void)
 197 {
 198         /*
 199          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
 200          * SDRAM-specific pins so that nobody messes with them.
 201          */
 202         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
 203         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
 204         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
 205         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
 206         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
 207         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
 208         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
 209         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
 210         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
 211         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
 212         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
 213         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
 214         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
 215         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
 216         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
 217         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
 218         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
 219
 220         at32_add_system_devices();
 221
 222 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
 223         at32_add_device_usart(1);
 224 #else
 225         at32_add_device_usart(0);
 226 #endif
 227         at32_add_device_usart(2);
 228
 229 #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
 230         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 231 #endif
 232 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
 233         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
 234 #endif
 235 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
 236         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
 237 #endif
 238 #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
 239         set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
 240 #else
 241         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
 242                              fbmem_start, fbmem_size);
 243 #endif
 244 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
 245         at32_add_device_ssc(0, ATMEL_SSC_TX);
 246 #endif
 247
 248         setup_j2_leds();
 249
 250         return 0;
 251 }
 252 postcore_initcall(atstk1002_init);