arch/avr32/boards/atstk1000/atstk1004.c

   1 /*
   2  * ATSTK1003 daughterboard-specific init code
   3  *
   4  * Copyright (C) 2007 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/err.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
  18 #include <linux/spi/at73c213.h>
  19 #include <linux/spi/spi.h>
  20
  21 #include <video/atmel_lcdc.h>
  22
  23 #include <asm/setup.h>
  24
  25 #include <asm/arch/at32ap700x.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 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
  33 static struct at73c213_board_info at73c213_data = {
  34         .ssc_id         = 0,
  35         .shortname      = "AVR32 STK1000 external DAC",
  36 };
  37 #endif
  38
  39 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
  40 static struct spi_board_info spi0_board_info[] __initdata = {
  41 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
  42         {
  43                 /* AT73C213 */
  44                 .modalias       = "at73c213",
  45                 .max_speed_hz   = 200000,
  46                 .chip_select    = 0,
  47                 .mode           = SPI_MODE_1,
  48                 .platform_data  = &at73c213_data,
  49         },
  50 #endif
  51         {
  52                 /* QVGA display */
  53                 .modalias       = "ltv350qv",
  54                 .max_speed_hz   = 16000000,
  55                 .chip_select    = 1,
  56                 .mode           = SPI_MODE_3,
  57         },
  58 };
  59 #endif
  60
  61 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
  62 static struct spi_board_info spi1_board_info[] __initdata = { {
  63         /* patch in custom entries here */
  64 } };
  65 #endif
  66
  67 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
  68 static void __init atstk1004_setup_extdac(void)
  69 {
  70         struct clk *gclk;
  71         struct clk *pll;
  72
  73         gclk = clk_get(NULL, "gclk0");
  74         if (IS_ERR(gclk))
  75                 goto err_gclk;
  76         pll = clk_get(NULL, "pll0");
  77         if (IS_ERR(pll))
  78                 goto err_pll;
  79
  80         if (clk_set_parent(gclk, pll)) {
  81                 pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
  82                 goto err_set_clk;
  83         }
  84
  85         at32_select_periph(GPIO_PIN_PA(30), GPIO_PERIPH_A, 0);
  86         at73c213_data.dac_clk = gclk;
  87
  88 err_set_clk:
  89         clk_put(pll);
  90 err_pll:
  91         clk_put(gclk);
  92 err_gclk:
  93         return;
  94 }
  95 #else
  96 static void __init atstk1004_setup_extdac(void)
  97 {
  98
  99 }
 100 #endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
 101
 102 void __init setup_board(void)
 103 {
 104 #ifdef  CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 105         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
 106 #else
 107         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
 108 #endif
 109         /* USART 2/unused: expansion connector */
 110         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
 111
 112         at32_setup_serial_console(0);
 113 }
 114
 115 static int __init atstk1004_init(void)
 116 {
 117         at32_add_system_devices();
 118
 119 #ifdef  CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 120         at32_add_device_usart(1);
 121 #else
 122         at32_add_device_usart(0);
 123 #endif
 124         at32_add_device_usart(2);
 125
 126 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
 127         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
 128 #endif
 129 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
 130         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
 131 #endif
 132 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 133         at32_add_device_mci(0);
 134 #endif
 135         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
 136                              fbmem_start, fbmem_size);
 137         at32_add_device_usba(0, NULL);
 138 #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
 139         at32_add_device_ssc(0, ATMEL_SSC_TX);
 140 #endif
 141
 142         atstk1000_setup_j2_leds();
 143         atstk1004_setup_extdac();
 144
 145         return 0;
 146 }
 147 postcore_initcall(atstk1004_init);