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/irqchip.h>
  26 #include <linux/kernel.h>
  27 #include <linux/leds.h>
  28 #include <linux/pinctrl/machine.h>
  29 #include <linux/platform_data/gpio-rcar.h>
  30 #include <linux/platform_device.h>
  31 #include <mach/common.h>
  32 #include <mach/r8a7790.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35
  36 /* LEDS */
  37 static struct gpio_led lager_leds[] = {
  38         {
  39                 .name           = "led8",
  40                 .gpio           = RCAR_GP_PIN(5, 17),
  41                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  42         }, {
  43                 .name           = "led7",
  44                 .gpio           = RCAR_GP_PIN(4, 23),
  45                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  46         }, {
  47                 .name           = "led6",
  48                 .gpio           = RCAR_GP_PIN(4, 22),
  49                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  50         },
  51 };
  52
  53 static __initdata struct gpio_led_platform_data lager_leds_pdata = {
  54         .leds           = lager_leds,
  55         .num_leds       = ARRAY_SIZE(lager_leds),
  56 };
  57
  58 /* GPIO KEY */
  59 #define GPIO_KEY(c, g, d, ...) \
  60         { .code = c, .gpio = g, .desc = d, .active_low = 1 }
  61
  62 static __initdata struct gpio_keys_button gpio_buttons[] = {
  63         GPIO_KEY(KEY_4,         RCAR_GP_PIN(1, 28),     "SW2-pin4"),
  64         GPIO_KEY(KEY_3,         RCAR_GP_PIN(1, 26),     "SW2-pin3"),
  65         GPIO_KEY(KEY_2,         RCAR_GP_PIN(1, 24),     "SW2-pin2"),
  66         GPIO_KEY(KEY_1,         RCAR_GP_PIN(1, 14),     "SW2-pin1"),
  67 };
  68
  69 static __initdata struct gpio_keys_platform_data lager_keys_pdata = {
  70         .buttons        = gpio_buttons,
  71         .nbuttons       = ARRAY_SIZE(gpio_buttons),
  72 };
  73
  74 static const struct pinctrl_map lager_pinctrl_map[] = {
  75         /* SCIF0 (CN19: DEBUG SERIAL0) */
  76         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790",
  77                                   "scif0_data", "scif0"),
  78         /* SCIF1 (CN20: DEBUG SERIAL1) */
  79         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.7", "pfc-r8a7790",
  80                                   "scif1_data", "scif1"),
  81 };
  82
  83 static void __init lager_add_standard_devices(void)
  84 {
  85         r8a7790_clock_init();
  86
  87         pinctrl_register_mappings(lager_pinctrl_map,
  88                                   ARRAY_SIZE(lager_pinctrl_map));
  89         r8a7790_pinmux_init();
  90
  91         r8a7790_add_standard_devices();
  92         platform_device_register_data(&platform_bus, "leds-gpio", -1,
  93                                       &lager_leds_pdata,
  94                                       sizeof(lager_leds_pdata));
  95         platform_device_register_data(&platform_bus, "gpio-keys", -1,
  96                                       &lager_keys_pdata,
  97                                       sizeof(lager_keys_pdata));
  98 }
  99
 100 static const char *lager_boards_compat_dt[] __initdata = {
 101         "renesas,lager",
 102         NULL,
 103 };
 104
 105 DT_MACHINE_START(LAGER_DT, "lager")
 106         .init_irq       = irqchip_init,
 107         .init_time      = r8a7790_timer_init,
 108         .init_machine   = lager_add_standard_devices,
 109         .dt_compat      = lager_boards_compat_dt,
 110 MACHINE_END