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 #include <linux/spi/at73c213.h>
  20
  21 #include <video/atmel_lcdc.h>
  22
  23 #include <asm/io.h>
  24 #include <asm/setup.h>
  25 #include <asm/arch/at32ap7000.h>
  26 #include <asm/arch/board.h>
  27 #include <asm/arch/init.h>
  28 #include <asm/arch/portmux.h>
  29
  30 #include "atstk1000.h"
  31
  32
  33 struct eth_addr {
  34         u8 addr[6];
  35 };
  36
  37 static struct eth_addr __initdata hw_addr[2];
  38 static struct eth_platform_data __initdata eth_data[2] = {
  39         {
  40                 /*
  41                  * The MDIO pullups on STK1000 are a bit too weak for
  42                  * the autodetection to work properly, so we have to
  43                  * mask out everything but the correct address.
  44                  */
  45                 .phy_mask       = ~(1U << 16),
  46         },
  47         {
  48                 .phy_mask       = ~(1U << 17),
  49         },
  50 };
  51
  52 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
  53 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
  54 static struct at73c213_board_info at73c213_data = {
  55         .ssc_id         = 0,
  56         .shortname      = "AVR32 STK1000 external DAC",
  57 };
  58 #endif
  59 #endif
  60
  61 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
  62 static struct spi_board_info spi0_board_info[] __initdata = {
  63 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
  64         {
  65                 /* AT73C213 */
  66                 .modalias       = "at73c213",
  67                 .max_speed_hz   = 200000,
  68                 .chip_select    = 0,
  69                 .mode           = SPI_MODE_1,
  70                 .platform_data  = &at73c213_data,
  71         },
  72 #endif
  73         {
  74                 /* QVGA display */
  75                 .modalias       = "ltv350qv",
  76                 .max_speed_hz   = 16000000,
  77                 .chip_select    = 1,
  78                 .mode           = SPI_MODE_3,
  79         },
  80 };
  81 #endif
  82
  83 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
  84 static struct spi_board_info spi1_board_info[] __initdata = { {
  85         /* patch in custom entries here */
  86 } };
  87 #endif
  88
  89 /*
  90  * The next two functions should go away as the boot loader is
  91  * supposed to initialize the macb address registers with a valid
  92  * ethernet address. But we need to keep it around for a while until
  93  * we can be reasonably sure the boot loader does this.
  94  *
  95  * The phy_id is ignored as the driver will probe for it.
  96  */
  97 static int __init parse_tag_ethernet(struct tag *tag)
  98 {
  99         int i;
 100
 101         i = tag->u.ethernet.mac_index;
 102         if (i < ARRAY_SIZE(hw_addr))
 103                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
 104                        sizeof(hw_addr[i].addr));
 105
 106         return 0;
 107 }
 108 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
 109
 110 static void __init set_hw_addr(struct platform_device *pdev)
 111 {
 112         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 113         const u8 *addr;
 114         void __iomem *regs;
 115         struct clk *pclk;
 116
 117         if (!res)
 118                 return;
 119         if (pdev->id >= ARRAY_SIZE(hw_addr))
 120                 return;
 121
 122         addr = hw_addr[pdev->id].addr;
 123         if (!is_valid_ether_addr(addr))
 124                 return;
 125
 126         /*
 127          * Since this is board-specific code, we'll cheat and use the
 128          * physical address directly as we happen to know that it's
 129          * the same as the virtual address.
 130          */
 131         regs = (void __iomem __force *)res->start;
 132         pclk = clk_get(&pdev->dev, "pclk");
 133         if (!pclk)
 134                 return;
 135
 136         clk_enable(pclk);
 137         __raw_writel((addr[3] << 24) | (addr[2] << 16)
 138                      | (addr[1] << 8) | addr[0], regs + 0x98);
 139         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
 140         clk_disable(pclk);
 141         clk_put(pclk);
 142 }
 143
 144 #ifdef CONFIG_BOARD_ATSTK1002_J2_LED
 145
 146 static struct gpio_led stk_j2_led[] = {
 147 #ifdef CONFIG_BOARD_ATSTK1002_J2_LED8
 148 #define LEDSTRING "J2 jumpered to LED8"
 149         { .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
 150         { .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
 151         { .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
 152         { .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
 153         { .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
 154         { .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
 155         { .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
 156         { .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
 157                         .default_trigger = "heartbeat", },
 158 #else   /* RGB */
 159 #define LEDSTRING "J2 jumpered to RGB LEDs"
 160         { .name = "r1:red",     .gpio = GPIO_PIN_PB( 8), },
 161         { .name = "g1:green",   .gpio = GPIO_PIN_PB(10), },
 162         { .name = "b1:blue",    .gpio = GPIO_PIN_PB(14), },
 163
 164         { .name = "r2:red",     .gpio = GPIO_PIN_PB( 9),
 165                         .default_trigger = "heartbeat", },
 166         { .name = "g2:green",   .gpio = GPIO_PIN_PB(13), },
 167         { .name = "b2:blue",    .gpio = GPIO_PIN_PB(15),
 168                         .default_trigger = "heartbeat", },
 169         /* PB16, PB30 unused */
 170 #endif
 171 };
 172
 173 static struct gpio_led_platform_data stk_j2_led_data = {
 174         .num_leds       = ARRAY_SIZE(stk_j2_led),
 175         .leds           = stk_j2_led,
 176 };
 177
 178 static struct platform_device stk_j2_led_dev = {
 179         .name           = "leds-gpio",
 180         .id             = 2,    /* gpio block J2 */
 181         .dev            = {
 182                 .platform_data  = &stk_j2_led_data,
 183         },
 184 };
 185
 186 static void setup_j2_leds(void)
 187 {
 188         unsigned        i;
 189
 190         for (i = 0; i < ARRAY_SIZE(stk_j2_led); i++)
 191                 at32_select_gpio(stk_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
 192
 193         printk("STK1002: " LEDSTRING "\n");
 194         platform_device_register(&stk_j2_led_dev);
 195 }
 196
 197 #else
 198 static void setup_j2_leds(void)
 199 {
 200 }
 201 #endif
 202
 203 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
 204 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
 205 static void __init at73c213_set_clk(struct at73c213_board_info *info)
 206 {
 207         struct clk *gclk;
 208         struct clk *pll;
 209
 210         gclk = clk_get(NULL, "gclk0");
 211         if (IS_ERR(gclk))
 212                 goto err_gclk;
 213         pll = clk_get(NULL, "pll0");
 214         if (IS_ERR(pll))
 215                 goto err_pll;
 216
 217         if (clk_set_parent(gclk, pll)) {
 218                 pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
 219                 goto err_set_clk;
 220         }
 221
 222         at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
 223         info->dac_clk = gclk;
 224
 225 err_set_clk:
 226         clk_put(pll);
 227 err_pll:
 228         clk_put(gclk);
 229 err_gclk:
 230         return;
 231 }
 232 #endif
 233 #endif
 234
 235 void __init setup_board(void)
 236 {
 237 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
 238         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
 239 #else
 240         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
 241 #endif
 242         /* USART 2/unused: expansion connector */
 243         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
 244
 245         at32_setup_serial_console(0);
 246 }
 247
 248 static int __init atstk1002_init(void)
 249 {
 250         /*
 251          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
 252          * SDRAM-specific pins so that nobody messes with them.
 253          */
 254         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
 255         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
 256         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
 257         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
 258         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
 259         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
 260         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
 261         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
 262         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
 263         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
 264         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
 265         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
 266         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
 267         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
 268         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
 269         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
 270         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
 271
 272         at32_add_system_devices();
 273
 274 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
 275         at32_add_device_usart(1);
 276 #else
 277         at32_add_device_usart(0);
 278 #endif
 279         at32_add_device_usart(2);
 280
 281 #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
 282         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 283 #endif
 284 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
 285         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
 286 #endif
 287 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
 288         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
 289 #endif
 290 #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
 291         set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
 292 #else
 293         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
 294                              fbmem_start, fbmem_size);
 295 #endif
 296         at32_add_device_usba(0, NULL);
 297 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
 298         at32_add_device_ssc(0, ATMEL_SSC_TX);
 299 #endif
 300
 301         setup_j2_leds();
 302
 303 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
 304 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
 305         at73c213_set_clk(&at73c213_data);
 306 #endif
 307 #endif
 308
 309         return 0;
 310 }
 311 postcore_initcall(atstk1002_init);