arch/arm/mach-mx5/eukrea_mbimxsd-baseboard.c

   1 /*
   2  * Copyright (C) 2010 Eric Benard - eric@eukrea.com
   3  *
   4  * Based on pcm970-baseboard.c which is :
   5  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  19  * MA 02110-1301, USA.
  20  */
  21
  22 #include <linux/types.h>
  23 #include <linux/init.h>
  24
  25 #include <linux/gpio.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/irq.h>
  28 #include <linux/leds.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/gpio_keys.h>
  31 #include <linux/input.h>
  32 #include <linux/i2c.h>
  33
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/time.h>
  37 #include <asm/mach/map.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/common.h>
  41 #include <mach/imx-uart.h>
  42 #include <mach/iomux-mx51.h>
  43 #include <mach/audmux.h>
  44
  45 #include "devices-imx51.h"
  46 #include "devices.h"
  47
  48 static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
  49         /* LED */
  50         MX51_PAD_NANDF_D10__GPIO3_30,
  51         /* SWITCH */
  52         _MX51_PAD_NANDF_D9__GPIO3_31 | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
  53                         PAD_CTL_PKE | PAD_CTL_SRE_FAST |
  54                         PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
  55         /* UART2 */
  56         MX51_PAD_UART2_RXD__UART2_RXD,
  57         MX51_PAD_UART2_TXD__UART2_TXD,
  58         /* UART 3 */
  59         MX51_PAD_UART3_RXD__UART3_RXD,
  60         MX51_PAD_UART3_TXD__UART3_TXD,
  61         MX51_PAD_KEY_COL4__UART3_RTS,
  62         MX51_PAD_KEY_COL5__UART3_CTS,
  63         /* SD */
  64         MX51_PAD_SD1_CMD__SD1_CMD,
  65         MX51_PAD_SD1_CLK__SD1_CLK,
  66         MX51_PAD_SD1_DATA0__SD1_DATA0,
  67         MX51_PAD_SD1_DATA1__SD1_DATA1,
  68         MX51_PAD_SD1_DATA2__SD1_DATA2,
  69         MX51_PAD_SD1_DATA3__SD1_DATA3,
  70         /* SD1 CD */
  71         _MX51_PAD_GPIO1_0__SD1_CD | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
  72                         PAD_CTL_PKE | PAD_CTL_SRE_FAST |
  73                         PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
  74 };
  75
  76 #define GPIO_LED1       IMX_GPIO_NR(3, 30)
  77 #define GPIO_SWITCH1    IMX_GPIO_NR(3, 31)
  78
  79 static struct gpio_led eukrea_mbimxsd_leds[] = {
  80         {
  81                 .name                   = "led1",
  82                 .default_trigger        = "heartbeat",
  83                 .active_low             = 1,
  84                 .gpio                   = GPIO_LED1,
  85         },
  86 };
  87
  88 static struct gpio_led_platform_data eukrea_mbimxsd_led_info = {
  89         .leds           = eukrea_mbimxsd_leds,
  90         .num_leds       = ARRAY_SIZE(eukrea_mbimxsd_leds),
  91 };
  92
  93 static struct platform_device eukrea_mbimxsd_leds_gpio = {
  94         .name   = "leds-gpio",
  95         .id     = -1,
  96         .dev    = {
  97                 .platform_data  = &eukrea_mbimxsd_led_info,
  98         },
  99 };
 100
 101 static struct gpio_keys_button eukrea_mbimxsd_gpio_buttons[] = {
 102         {
 103                 .gpio           = GPIO_SWITCH1,
 104                 .code           = BTN_0,
 105                 .desc           = "BP1",
 106                 .active_low     = 1,
 107                 .wakeup         = 1,
 108         },
 109 };
 110
 111 static struct gpio_keys_platform_data eukrea_mbimxsd_button_data = {
 112         .buttons        = eukrea_mbimxsd_gpio_buttons,
 113         .nbuttons       = ARRAY_SIZE(eukrea_mbimxsd_gpio_buttons),
 114 };
 115
 116 static struct platform_device eukrea_mbimxsd_button_device = {
 117         .name           = "gpio-keys",
 118         .id             = -1,
 119         .num_resources  = 0,
 120         .dev            = {
 121                 .platform_data  = &eukrea_mbimxsd_button_data,
 122         }
 123 };
 124
 125 static struct platform_device *platform_devices[] __initdata = {
 126         &eukrea_mbimxsd_leds_gpio,
 127         &eukrea_mbimxsd_button_device,
 128 };
 129
 130 static const struct imxuart_platform_data uart_pdata __initconst = {
 131         .flags = IMXUART_HAVE_RTSCTS,
 132 };
 133
 134 static struct i2c_board_info eukrea_mbimxsd_i2c_devices[] = {
 135         {
 136                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 137         },
 138 };
 139
 140 /*
 141  * system init for baseboard usage. Will be called by cpuimx51sd init.
 142  *
 143  * Add platform devices present on this baseboard and init
 144  * them from CPU side as far as required to use them later on
 145  */
 146 void __init eukrea_mbimxsd51_baseboard_init(void)
 147 {
 148         if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd_pads,
 149                         ARRAY_SIZE(eukrea_mbimxsd_pads)))
 150                 printk(KERN_ERR "error setting mbimxsd pads !\n");
 151
 152         imx51_add_imx_uart(1, NULL);
 153         imx51_add_imx_uart(2, &uart_pdata);
 154
 155         imx51_add_sdhci_esdhc_imx(0, NULL);
 156
 157         gpio_request(GPIO_LED1, "LED1");
 158         gpio_direction_output(GPIO_LED1, 1);
 159         gpio_free(GPIO_LED1);
 160
 161         gpio_request(GPIO_SWITCH1, "SWITCH1");
 162         gpio_direction_input(GPIO_SWITCH1);
 163         gpio_free(GPIO_SWITCH1);
 164
 165         i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
 166                                 ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));
 167
 168         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 169 }