arch/arm/mach-shmobile/board-lager.c

   1 /*
   2  * Lager board support
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Magnus Damm
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  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 St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/gpio.h>
  22 #include <linux/gpio_keys.h>
  23 #include <linux/input.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/kernel.h>
  26 #include <linux/leds.h>
  27 #include <linux/pinctrl/machine.h>
  28 #include <linux/platform_data/gpio-rcar.h>
  29 #include <linux/platform_device.h>
  30 #include <mach/common.h>
  31 #include <mach/r8a7790.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34
  35 /* LEDS */
  36 static struct gpio_led lager_leds[] = {
  37         {
  38                 .name           = "led8",
  39                 .gpio           = RCAR_GP_PIN(5, 17),
  40                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  41         }, {
  42                 .name           = "led7",
  43                 .gpio           = RCAR_GP_PIN(4, 23),
  44                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  45         }, {
  46                 .name           = "led6",
  47                 .gpio           = RCAR_GP_PIN(4, 22),
  48                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  49         },
  50 };
  51
  52 static __initdata struct gpio_led_platform_data lager_leds_pdata = {
  53         .leds           = lager_leds,
  54         .num_leds       = ARRAY_SIZE(lager_leds),
  55 };
  56
  57 /* GPIO KEY */
  58 #define GPIO_KEY(c, g, d, ...) \
  59         { .code = c, .gpio = g, .desc = d, .active_low = 1 }
  60
  61 static struct gpio_keys_button gpio_buttons[] = {
  62         GPIO_KEY(KEY_4,         RCAR_GP_PIN(1, 28),     "SW2-pin4"),
  63         GPIO_KEY(KEY_3,         RCAR_GP_PIN(1, 26),     "SW2-pin3"),
  64         GPIO_KEY(KEY_2,         RCAR_GP_PIN(1, 24),     "SW2-pin2"),
  65         GPIO_KEY(KEY_1,         RCAR_GP_PIN(1, 14),     "SW2-pin1"),
  66 };
  67
  68 static __initdata struct gpio_keys_platform_data lager_keys_pdata = {
  69         .buttons        = gpio_buttons,
  70         .nbuttons       = ARRAY_SIZE(gpio_buttons),
  71 };
  72
  73 static const struct pinctrl_map lager_pinctrl_map[] = {
  74         /* SCIF0 (CN19: DEBUG SERIAL0) */
  75         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790",
  76                                   "scif0_data", "scif0"),
  77         /* SCIF1 (CN20: DEBUG SERIAL1) */
  78         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.7", "pfc-r8a7790",
  79                                   "scif1_data", "scif1"),
  80 };
  81
  82 static void __init lager_add_standard_devices(void)
  83 {
  84         r8a7790_clock_init();
  85
  86         pinctrl_register_mappings(lager_pinctrl_map,
  87                                   ARRAY_SIZE(lager_pinctrl_map));
  88         r8a7790_pinmux_init();
  89
  90         r8a7790_add_standard_devices();
  91         platform_device_register_data(&platform_bus, "leds-gpio", -1,
  92                                       &lager_leds_pdata,
  93                                       sizeof(lager_leds_pdata));
  94         platform_device_register_data(&platform_bus, "gpio-keys", -1,
  95                                       &lager_keys_pdata,
  96                                       sizeof(lager_keys_pdata));
  97 }
  98
  99 static const char *lager_boards_compat_dt[] __initdata = {
 100         "renesas,lager",
 101         NULL,
 102 };
 103
 104 DT_MACHINE_START(LAGER_DT, "lager")
 105         .init_time      = r8a7790_timer_init,
 106         .init_machine   = lager_add_standard_devices,
 107         .dt_compat      = lager_boards_compat_dt,
 108 MACHINE_END