arch/arm/mach-mx2/pca100.c

   1 /*
   2  * Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
   3  * Copyright (C) 2009 Sascha Hauer (kernel@pengutronix.de)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17  * MA 02110-1301, USA.
  18  */
  19
  20 #include <linux/platform_device.h>
  21 #include <linux/io.h>
  22 #include <linux/i2c.h>
  23 #include <linux/i2c/at24.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/eeprom.h>
  27 #include <linux/irq.h>
  28 #include <linux/gpio.h>
  29
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach-types.h>
  32 #include <mach/common.h>
  33 #include <mach/hardware.h>
  34 #include <mach/iomux.h>
  35 #include <mach/i2c.h>
  36 #include <asm/mach/time.h>
  37 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
  38 #include <mach/spi.h>
  39 #endif
  40 #include <mach/imx-uart.h>
  41 #include <mach/mxc_nand.h>
  42 #include <mach/irqs.h>
  43 #include <mach/mmc.h>
  44
  45 #include "devices.h"
  46
  47 static int pca100_pins[] = {
  48         /* UART1 */
  49         PE12_PF_UART1_TXD,
  50         PE13_PF_UART1_RXD,
  51         PE14_PF_UART1_CTS,
  52         PE15_PF_UART1_RTS,
  53         /* SDHC */
  54         PB4_PF_SD2_D0,
  55         PB5_PF_SD2_D1,
  56         PB6_PF_SD2_D2,
  57         PB7_PF_SD2_D3,
  58         PB8_PF_SD2_CMD,
  59         PB9_PF_SD2_CLK,
  60         /* FEC */
  61         PD0_AIN_FEC_TXD0,
  62         PD1_AIN_FEC_TXD1,
  63         PD2_AIN_FEC_TXD2,
  64         PD3_AIN_FEC_TXD3,
  65         PD4_AOUT_FEC_RX_ER,
  66         PD5_AOUT_FEC_RXD1,
  67         PD6_AOUT_FEC_RXD2,
  68         PD7_AOUT_FEC_RXD3,
  69         PD8_AF_FEC_MDIO,
  70         PD9_AIN_FEC_MDC,
  71         PD10_AOUT_FEC_CRS,
  72         PD11_AOUT_FEC_TX_CLK,
  73         PD12_AOUT_FEC_RXD0,
  74         PD13_AOUT_FEC_RX_DV,
  75         PD14_AOUT_FEC_RX_CLK,
  76         PD15_AOUT_FEC_COL,
  77         PD16_AIN_FEC_TX_ER,
  78         PF23_AIN_FEC_TX_EN,
  79         /* SSI1 */
  80         PC20_PF_SSI1_FS,
  81         PC21_PF_SSI1_RXD,
  82         PC22_PF_SSI1_TXD,
  83         PC23_PF_SSI1_CLK,
  84         /* onboard I2C */
  85         PC5_PF_I2C2_SDA,
  86         PC6_PF_I2C2_SCL,
  87         /* external I2C */
  88         PD17_PF_I2C_DATA,
  89         PD18_PF_I2C_CLK,
  90         /* SPI1 */
  91         PD25_PF_CSPI1_RDY,
  92         PD29_PF_CSPI1_SCLK,
  93         PD30_PF_CSPI1_MISO,
  94         PD31_PF_CSPI1_MOSI,
  95 };
  96
  97 static struct imxuart_platform_data uart_pdata = {
  98         .flags = IMXUART_HAVE_RTSCTS,
  99 };
 100
 101 static struct mxc_nand_platform_data pca100_nand_board_info = {
 102         .width = 1,
 103         .hw_ecc = 1,
 104 };
 105
 106 static struct platform_device *platform_devices[] __initdata = {
 107         &mxc_w1_master_device,
 108         &mxc_fec_device,
 109 };
 110
 111 static struct imxi2c_platform_data pca100_i2c_1_data = {
 112         .bitrate = 100000,
 113 };
 114
 115 static struct at24_platform_data board_eeprom = {
 116         .byte_len = 4096,
 117         .page_size = 32,
 118         .flags = AT24_FLAG_ADDR16,
 119 };
 120
 121 static struct i2c_board_info pca100_i2c_devices[] = {
 122         {
 123                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 124                 .platform_data = &board_eeprom,
 125         }, {
 126                 I2C_BOARD_INFO("rtc-pcf8563", 0x51),
 127                 .type = "pcf8563"
 128         }, {
 129                 I2C_BOARD_INFO("lm75", 0x4a),
 130                 .type = "lm75"
 131         }
 132 };
 133
 134 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 135 static struct spi_eeprom at25320 = {
 136         .name           = "at25320an",
 137         .byte_len       = 4096,
 138         .page_size      = 32,
 139         .flags          = EE_ADDR2,
 140 };
 141
 142 static struct spi_board_info pca100_spi_board_info[] __initdata = {
 143         {
 144                 .modalias = "at25",
 145                 .max_speed_hz = 30000,
 146                 .bus_num = 0,
 147                 .chip_select = 1,
 148                 .platform_data = &at25320,
 149         },
 150 };
 151
 152 static int pca100_spi_cs[] = {GPIO_PORTD + 28, GPIO_PORTD + 27};
 153
 154 static struct spi_imx_master pca100_spi_0_data = {
 155         .chipselect     = pca100_spi_cs,
 156         .num_chipselect = ARRAY_SIZE(pca100_spi_cs),
 157 };
 158 #endif
 159
 160 static int pca100_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 161                 void *data)
 162 {
 163         int ret;
 164
 165         ret = request_irq(IRQ_GPIOC(29), detect_irq,
 166                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 167                           "imx-mmc-detect", data);
 168         if (ret)
 169                 printk(KERN_ERR
 170                         "pca100: Failed to reuest irq for sd/mmc detection\n");
 171
 172         return ret;
 173 }
 174
 175 static void pca100_sdhc2_exit(struct device *dev, void *data)
 176 {
 177         free_irq(IRQ_GPIOC(29), data);
 178 }
 179
 180 static struct imxmmc_platform_data sdhc_pdata = {
 181         .init = pca100_sdhc2_init,
 182         .exit = pca100_sdhc2_exit,
 183 };
 184
 185 static void __init pca100_init(void)
 186 {
 187         int ret;
 188
 189         ret = mxc_gpio_setup_multiple_pins(pca100_pins,
 190                         ARRAY_SIZE(pca100_pins), "PCA100");
 191         if (ret)
 192                 printk(KERN_ERR "pca100: Failed to setup pins (%d)\n", ret);
 193
 194         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 195
 196         mxc_gpio_mode(GPIO_PORTC | 29 | GPIO_GPIO | GPIO_IN);
 197         mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
 198
 199         mxc_register_device(&mxc_nand_device, &pca100_nand_board_info);
 200
 201         /* only the i2c master 1 is used on this CPU card */
 202         i2c_register_board_info(1, pca100_i2c_devices,
 203                                 ARRAY_SIZE(pca100_i2c_devices));
 204
 205         mxc_register_device(&mxc_i2c_device1, &pca100_i2c_1_data);
 206
 207         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 208         mxc_gpio_mode(GPIO_PORTD | 27 | GPIO_GPIO | GPIO_OUT);
 209
 210         /* GPIO0_IRQ */
 211         mxc_gpio_mode(GPIO_PORTC | 31 | GPIO_GPIO | GPIO_IN);
 212         /* GPIO1_IRQ */
 213         mxc_gpio_mode(GPIO_PORTC | 25 | GPIO_GPIO | GPIO_IN);
 214         /* GPIO2_IRQ */
 215         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_IN);
 216
 217 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 218         spi_register_board_info(pca100_spi_board_info,
 219                                 ARRAY_SIZE(pca100_spi_board_info));
 220         mxc_register_device(&mxc_spi_device0, &pca100_spi_0_data);
 221 #endif
 222
 223         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 224 }
 225
 226 static void __init pca100_timer_init(void)
 227 {
 228         mx27_clocks_init(26000000);
 229 }
 230
 231 static struct sys_timer pca100_timer = {
 232         .init = pca100_timer_init,
 233 };
 234
 235 MACHINE_START(PCA100, "phyCARD-i.MX27")
 236         .phys_io        = AIPI_BASE_ADDR,
 237         .io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 238         .boot_params    = PHYS_OFFSET + 0x100,
 239         .map_io         = mx27_map_io,
 240         .init_irq       = mxc_init_irq,
 241         .init_machine   = pca100_init,
 242         .timer          = &pca100_timer,
 243 MACHINE_END
 244