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/platform_device.h>
  15 #include <linux/string.h>
  16 #include <linux/types.h>
  17 #include <linux/spi/spi.h>
  18
  19 #include <video/atmel_lcdc.h>
  20
  21 #include <asm/io.h>
  22 #include <asm/setup.h>
  23 #include <asm/arch/at32ap7000.h>
  24 #include <asm/arch/board.h>
  25 #include <asm/arch/init.h>
  26 #include <asm/arch/portmux.h>
  27
  28 #include "atstk1000.h"
  29
  30
  31 struct eth_addr {
  32         u8 addr[6];
  33 };
  34
  35 static struct eth_addr __initdata hw_addr[2];
  36 static struct eth_platform_data __initdata eth_data[2];
  37
  38 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
  39 static struct spi_board_info spi0_board_info[] __initdata = {
  40         {
  41                 /* QVGA display */
  42                 .modalias       = "ltv350qv",
  43                 .max_speed_hz   = 16000000,
  44                 .chip_select    = 1,
  45                 .mode           = SPI_MODE_3,
  46         },
  47 };
  48 #endif
  49
  50 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
  51 static struct spi_board_info spi1_board_info[] __initdata = { {
  52         /* patch in custom entries here */
  53 } };
  54 #endif
  55
  56 /*
  57  * The next two functions should go away as the boot loader is
  58  * supposed to initialize the macb address registers with a valid
  59  * ethernet address. But we need to keep it around for a while until
  60  * we can be reasonably sure the boot loader does this.
  61  *
  62  * The phy_id is ignored as the driver will probe for it.
  63  */
  64 static int __init parse_tag_ethernet(struct tag *tag)
  65 {
  66         int i;
  67
  68         i = tag->u.ethernet.mac_index;
  69         if (i < ARRAY_SIZE(hw_addr))
  70                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
  71                        sizeof(hw_addr[i].addr));
  72
  73         return 0;
  74 }
  75 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
  76
  77 static void __init set_hw_addr(struct platform_device *pdev)
  78 {
  79         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  80         const u8 *addr;
  81         void __iomem *regs;
  82         struct clk *pclk;
  83
  84         if (!res)
  85                 return;
  86         if (pdev->id >= ARRAY_SIZE(hw_addr))
  87                 return;
  88
  89         addr = hw_addr[pdev->id].addr;
  90         if (!is_valid_ether_addr(addr))
  91                 return;
  92
  93         /*
  94          * Since this is board-specific code, we'll cheat and use the
  95          * physical address directly as we happen to know that it's
  96          * the same as the virtual address.
  97          */
  98         regs = (void __iomem __force *)res->start;
  99         pclk = clk_get(&pdev->dev, "pclk");
 100         if (!pclk)
 101                 return;
 102
 103         clk_enable(pclk);
 104         __raw_writel((addr[3] << 24) | (addr[2] << 16)
 105                      | (addr[1] << 8) | addr[0], regs + 0x98);
 106         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
 107         clk_disable(pclk);
 108         clk_put(pclk);
 109 }
 110
 111 void __init setup_board(void)
 112 {
 113 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
 114         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
 115 #else
 116         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
 117 #endif
 118         /* USART 2/unused: expansion connector */
 119         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
 120
 121         at32_setup_serial_console(0);
 122 }
 123
 124 static int __init atstk1002_init(void)
 125 {
 126         /*
 127          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
 128          * SDRAM-specific pins so that nobody messes with them.
 129          */
 130         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
 131         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
 132         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
 133         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
 134         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
 135         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
 136         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
 137         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
 138         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
 139         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
 140         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
 141         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
 142         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
 143         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
 144         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
 145         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
 146         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
 147
 148         at32_add_system_devices();
 149
 150 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
 151         at32_add_device_usart(1);
 152 #else
 153         at32_add_device_usart(0);
 154 #endif
 155         at32_add_device_usart(2);
 156
 157         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 158
 159 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
 160         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
 161 #endif
 162 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
 163         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
 164 #endif
 165 #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
 166         set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
 167 #else
 168         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
 169                              fbmem_start, fbmem_size);
 170 #endif
 171 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
 172         at32_add_device_ssc(0, ATMEL_SSC_TX);
 173 #endif
 174
 175         return 0;
 176 }
 177 postcore_initcall(atstk1002_init);