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 #include <linux/atmel-mci.h>
  21
  22 #include <video/atmel_lcdc.h>
  23
  24 #include <asm/setup.h>
  25
  26 #include <mach/at32ap700x.h>
  27 #include <mach/board.h>
  28 #include <mach/init.h>
  29 #include <mach/portmux.h>
  30
  31 #include "atstk1000.h"
  32
  33 /* Oscillator frequencies. These are board specific */
  34 unsigned long at32_board_osc_rates[3] = {
  35         [0] = 32768,    /* 32.768 kHz on RTC osc */
  36         [1] = 20000000, /* 20 MHz on osc0 */
  37         [2] = 12000000, /* 12 MHz on osc1 */
  38 };
  39
  40 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
  41 static struct at73c213_board_info at73c213_data = {
  42         .ssc_id         = 0,
  43         .shortname      = "AVR32 STK1000 external DAC",
  44 };
  45 #endif
  46
  47 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
  48 static struct spi_board_info spi0_board_info[] __initdata = {
  49 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
  50         {
  51                 /* AT73C213 */
  52                 .modalias       = "at73c213",
  53                 .max_speed_hz   = 200000,
  54                 .chip_select    = 0,
  55                 .mode           = SPI_MODE_1,
  56                 .platform_data  = &at73c213_data,
  57         },
  58 #endif
  59         {
  60                 /* QVGA display */
  61                 .modalias       = "ltv350qv",
  62                 .max_speed_hz   = 16000000,
  63                 .chip_select    = 1,
  64                 .mode           = SPI_MODE_3,
  65         },
  66 };
  67 #endif
  68
  69 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
  70 static struct spi_board_info spi1_board_info[] __initdata = { {
  71         /* patch in custom entries here */
  72 } };
  73 #endif
  74
  75 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
  76 static struct mci_platform_data __initdata mci0_data = {
  77         .slot[0] = {
  78                 .bus_width      = 4,
  79                 .detect_pin     = -ENODEV,
  80                 .wp_pin         = -ENODEV,
  81         },
  82 };
  83 #endif
  84
  85 #ifdef CONFIG_BOARD_ATSTK1000_EXTDAC
  86 static void __init atstk1004_setup_extdac(void)
  87 {
  88         struct clk *gclk;
  89         struct clk *pll;
  90
  91         gclk = clk_get(NULL, "gclk0");
  92         if (IS_ERR(gclk))
  93                 goto err_gclk;
  94         pll = clk_get(NULL, "pll0");
  95         if (IS_ERR(pll))
  96                 goto err_pll;
  97
  98         if (clk_set_parent(gclk, pll)) {
  99                 pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n");
 100                 goto err_set_clk;
 101         }
 102
 103         at32_select_periph(GPIO_PIOA_BASE, (1 << 30), GPIO_PERIPH_A, 0);
 104         at73c213_data.dac_clk = gclk;
 105
 106 err_set_clk:
 107         clk_put(pll);
 108 err_pll:
 109         clk_put(gclk);
 110 err_gclk:
 111         return;
 112 }
 113 #else
 114 static void __init atstk1004_setup_extdac(void)
 115 {
 116
 117 }
 118 #endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
 119
 120 void __init setup_board(void)
 121 {
 122 #ifdef  CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 123         at32_map_usart(0, 1, 0);        /* USART 0/B: /dev/ttyS1, IRDA */
 124 #else
 125         at32_map_usart(1, 0, 0);        /* USART 1/A: /dev/ttyS0, DB9 */
 126 #endif
 127         /* USART 2/unused: expansion connector */
 128         at32_map_usart(3, 2, 0);        /* USART 3/C: /dev/ttyS2, DB9 */
 129
 130         at32_setup_serial_console(0);
 131 }
 132
 133 static int __init atstk1004_init(void)
 134 {
 135 #ifdef  CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 136         at32_add_device_usart(1);
 137 #else
 138         at32_add_device_usart(0);
 139 #endif
 140         at32_add_device_usart(2);
 141
 142 #ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM
 143         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
 144 #endif
 145 #ifdef CONFIG_BOARD_ATSTK100X_SPI1
 146         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
 147 #endif
 148 #ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 149         at32_add_device_mci(0, &mci0_data);
 150 #endif
 151         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
 152                              fbmem_start, fbmem_size,
 153                              ATMEL_LCDC_PRI_24BIT | ATMEL_LCDC_PRI_CONTROL);
 154         at32_add_device_usba(0, NULL);
 155 #ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM
 156         at32_add_device_ssc(0, ATMEL_SSC_TX);
 157 #endif
 158
 159         atstk1000_setup_j2_leds();
 160         atstk1004_setup_extdac();
 161
 162         return 0;
 163 }
 164 postcore_initcall(atstk1004_init);