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 <asm/setup.h> 23 24#include <mach/at32ap700x.h> 25#include <mach/board.h> 26#include <mach/init.h> 27#include <mach/portmux.h> 28 29#include "atstk1000.h" 30 31/* Oscillator frequencies. These are board specific */ 32unsigned long at32_board_osc_rates[3] = { 33 [0] = 32768, /* 32.768 kHz on RTC osc */ 34 [1] = 20000000, /* 20 MHz on osc0 */ 35 [2] = 12000000, /* 12 MHz on osc1 */ 36}; 37 38#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC 39static struct at73c213_board_info at73c213_data = { 40 .ssc_id = 0, 41 .shortname = "AVR32 STK1000 external DAC", 42}; 43#endif 44 45#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM 46static struct spi_board_info spi0_board_info[] __initdata = { 47#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC 48 { 49 /* AT73C213 */ 50 .modalias = "at73c213", 51 .max_speed_hz = 200000, 52 .chip_select = 0, 53 .mode = SPI_MODE_1, 54 .platform_data = &at73c213_data, 55 }, 56#endif 57 /* 58 * We can control the LTV350QV LCD panel, but it isn't much 59 * point since we don't have an LCD controller... 60 */ 61}; 62#endif 63 64#ifdef CONFIG_BOARD_ATSTK100X_SPI1 65static struct spi_board_info spi1_board_info[] __initdata = { { 66 /* patch in custom entries here */ 67} }; 68#endif 69 70#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM 71static struct mci_platform_data __initdata mci0_data = { 72 .slot[0] = { 73 .bus_width = 4, 74 .detect_pin = -ENODEV, 75 .wp_pin = -ENODEV, 76 }, 77}; 78#endif 79 80#ifdef CONFIG_BOARD_ATSTK1000_EXTDAC 81static void __init atstk1003_setup_extdac(void) 82{ 83 struct clk *gclk; 84 struct clk *pll; 85 86 gclk = clk_get(NULL, "gclk0"); 87 if (IS_ERR(gclk)) 88 goto err_gclk; 89 pll = clk_get(NULL, "pll0"); 90 if (IS_ERR(pll)) 91 goto err_pll; 92 93 if (clk_set_parent(gclk, pll)) { 94 pr_debug("STK1000: failed to set pll0 as parent for DAC clock\n"); 95 goto err_set_clk; 96 } 97 98 at32_select_periph(GPIO_PIOA_BASE, (1 << 30), GPIO_PERIPH_A, 0); 99 at73c213_data.dac_clk = gclk; 100 101err_set_clk: 102 clk_put(pll); 103err_pll: 104 clk_put(gclk); 105err_gclk: 106 return; 107} 108#else 109static void __init atstk1003_setup_extdac(void) 110{ 111 112} 113#endif /* CONFIG_BOARD_ATSTK1000_EXTDAC */ 114 115void __init setup_board(void) 116{ 117#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM 118 at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */ 119#else 120 at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */ 121#endif 122 /* USART 2/unused: expansion connector */ 123 at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */ 124 125 at32_setup_serial_console(0); 126} 127 128static int __init atstk1003_init(void) 129{ 130 /* 131 * ATSTK1000 uses 32-bit SDRAM interface. Reserve the 132 * SDRAM-specific pins so that nobody messes with them. 133 */ 134 at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL); 135 136#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM 137 at32_add_device_usart(1); 138#else 139 at32_add_device_usart(0); 140#endif 141 at32_add_device_usart(2); 142 143#ifndef CONFIG_BOARD_ATSTK100X_SW1_CUSTOM 144 at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info)); 145#endif 146#ifdef CONFIG_BOARD_ATSTK100X_SPI1 147 at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info)); 148#endif 149#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM 150 at32_add_device_mci(0, &mci0_data); 151#endif 152 at32_add_device_usba(0, NULL); 153#ifndef CONFIG_BOARD_ATSTK100X_SW3_CUSTOM 154 at32_add_device_ssc(0, ATMEL_SSC_TX); 155#endif 156 157 atstk1000_setup_j2_leds(); 158 atstk1003_setup_extdac(); 159 160 return 0; 161} 162postcore_initcall(atstk1003_init); 163