LXR linux/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 */
  34unsigned 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
  41static 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
  48static 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
  70static 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
  76static 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
  86static 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
 106err_set_clk:
 107        clk_put(pll);
 108err_pll:
 109        clk_put(gclk);
 110err_gclk:
 111        return;
 112}
 113#else
 114static void __init atstk1004_setup_extdac(void)
 115{
 116
 117}
 118#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */
 119
 120void __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
 133static 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}
 164postcore_initcall(atstk1004_init);
 165