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/input.h>
  31 #include <linux/i2c.h>
  32
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/time.h>
  36 #include <asm/mach/map.h>
  37
  38 #include <mach/hardware.h>
  39 #include <mach/common.h>
  40 #include <mach/iomux-mx51.h>
  41 #include <mach/audmux.h>
  42
  43 #include "devices-imx51.h"
  44 #include "devices.h"
  45
  46 static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
  47         /* LED */
  48         MX51_PAD_NANDF_D10__GPIO3_30,
  49         /* SWITCH */
  50         _MX51_PAD_NANDF_D9__GPIO3_31 | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
  51                         PAD_CTL_PKE | PAD_CTL_SRE_FAST |
  52                         PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
  53         /* UART2 */
  54         MX51_PAD_UART2_RXD__UART2_RXD,
  55         MX51_PAD_UART2_TXD__UART2_TXD,
  56         /* UART 3 */
  57         MX51_PAD_UART3_RXD__UART3_RXD,
  58         MX51_PAD_UART3_TXD__UART3_TXD,
  59         MX51_PAD_KEY_COL4__UART3_RTS,
  60         MX51_PAD_KEY_COL5__UART3_CTS,
  61         /* SD */
  62         MX51_PAD_SD1_CMD__SD1_CMD,
  63         MX51_PAD_SD1_CLK__SD1_CLK,
  64         MX51_PAD_SD1_DATA0__SD1_DATA0,
  65         MX51_PAD_SD1_DATA1__SD1_DATA1,
  66         MX51_PAD_SD1_DATA2__SD1_DATA2,
  67         MX51_PAD_SD1_DATA3__SD1_DATA3,
  68         /* SD1 CD */
  69         _MX51_PAD_GPIO1_0__SD1_CD | MUX_PAD_CTRL(PAD_CTL_PUS_22K_UP |
  70                         PAD_CTL_PKE | PAD_CTL_SRE_FAST |
  71                         PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
  72 };
  73
  74 #define GPIO_LED1       IMX_GPIO_NR(3, 30)
  75 #define GPIO_SWITCH1    IMX_GPIO_NR(3, 31)
  76
  77 static const struct gpio_led eukrea_mbimxsd_leds[] __initconst = {
  78         {
  79                 .name                   = "led1",
  80                 .default_trigger        = "heartbeat",
  81                 .active_low             = 1,
  82                 .gpio                   = GPIO_LED1,
  83         },
  84 };
  85
  86 static const struct gpio_led_platform_data
  87                 eukrea_mbimxsd_led_info __initconst = {
  88         .leds           = eukrea_mbimxsd_leds,
  89         .num_leds       = ARRAY_SIZE(eukrea_mbimxsd_leds),
  90 };
  91
  92 static struct gpio_keys_button eukrea_mbimxsd_gpio_buttons[] = {
  93         {
  94                 .gpio           = GPIO_SWITCH1,
  95                 .code           = BTN_0,
  96                 .desc           = "BP1",
  97                 .active_low     = 1,
  98                 .wakeup         = 1,
  99         },
 100 };
 101
 102 static const struct gpio_keys_platform_data
 103                 eukrea_mbimxsd_button_data __initconst = {
 104         .buttons        = eukrea_mbimxsd_gpio_buttons,
 105         .nbuttons       = ARRAY_SIZE(eukrea_mbimxsd_gpio_buttons),
 106 };
 107
 108 static const struct imxuart_platform_data uart_pdata __initconst = {
 109         .flags = IMXUART_HAVE_RTSCTS,
 110 };
 111
 112 static struct i2c_board_info eukrea_mbimxsd_i2c_devices[] = {
 113         {
 114                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 115         },
 116 };
 117
 118 /*
 119  * system init for baseboard usage. Will be called by cpuimx51sd init.
 120  *
 121  * Add platform devices present on this baseboard and init
 122  * them from CPU side as far as required to use them later on
 123  */
 124 void __init eukrea_mbimxsd51_baseboard_init(void)
 125 {
 126         if (mxc_iomux_v3_setup_multiple_pads(eukrea_mbimxsd_pads,
 127                         ARRAY_SIZE(eukrea_mbimxsd_pads)))
 128                 printk(KERN_ERR "error setting mbimxsd pads !\n");
 129
 130         imx51_add_imx_uart(1, NULL);
 131         imx51_add_imx_uart(2, &uart_pdata);
 132
 133         imx51_add_sdhci_esdhc_imx(0, NULL);
 134
 135         gpio_request(GPIO_LED1, "LED1");
 136         gpio_direction_output(GPIO_LED1, 1);
 137         gpio_free(GPIO_LED1);
 138
 139         gpio_request(GPIO_SWITCH1, "SWITCH1");
 140         gpio_direction_input(GPIO_SWITCH1);
 141         gpio_free(GPIO_SWITCH1);
 142
 143         i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
 144                                 ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));
 145
 146         gpio_led_register_device(-1, &eukrea_mbimxsd_led_info);
 147         imx_add_gpio_keys(&eukrea_mbimxsd_button_data);
 148 }