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/mmc/host.h>
  28 #include <linux/mmc/sh_mmcif.h>
  29 #include <linux/pinctrl/machine.h>
  30 #include <linux/platform_data/gpio-rcar.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/phy.h>
  33 #include <linux/regulator/fixed.h>
  34 #include <linux/regulator/machine.h>
  35 #include <linux/sh_eth.h>
  36 #include <mach/common.h>
  37 #include <mach/irqs.h>
  38 #include <mach/r8a7790.h>
  39 #include <asm/mach-types.h>
  40 #include <asm/mach/arch.h>
  41
  42 /* LEDS */
  43 static struct gpio_led lager_leds[] = {
  44         {
  45                 .name           = "led8",
  46                 .gpio           = RCAR_GP_PIN(5, 17),
  47                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  48         }, {
  49                 .name           = "led7",
  50                 .gpio           = RCAR_GP_PIN(4, 23),
  51                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  52         }, {
  53                 .name           = "led6",
  54                 .gpio           = RCAR_GP_PIN(4, 22),
  55                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
  56         },
  57 };
  58
  59 static __initdata struct gpio_led_platform_data lager_leds_pdata = {
  60         .leds           = lager_leds,
  61         .num_leds       = ARRAY_SIZE(lager_leds),
  62 };
  63
  64 /* GPIO KEY */
  65 #define GPIO_KEY(c, g, d, ...) \
  66         { .code = c, .gpio = g, .desc = d, .active_low = 1 }
  67
  68 static struct gpio_keys_button gpio_buttons[] = {
  69         GPIO_KEY(KEY_4,         RCAR_GP_PIN(1, 28),     "SW2-pin4"),
  70         GPIO_KEY(KEY_3,         RCAR_GP_PIN(1, 26),     "SW2-pin3"),
  71         GPIO_KEY(KEY_2,         RCAR_GP_PIN(1, 24),     "SW2-pin2"),
  72         GPIO_KEY(KEY_1,         RCAR_GP_PIN(1, 14),     "SW2-pin1"),
  73 };
  74
  75 static __initdata struct gpio_keys_platform_data lager_keys_pdata = {
  76         .buttons        = gpio_buttons,
  77         .nbuttons       = ARRAY_SIZE(gpio_buttons),
  78 };
  79
  80 /* Fixed 3.3V regulator to be used by MMCIF */
  81 static struct regulator_consumer_supply fixed3v3_power_consumers[] =
  82 {
  83         REGULATOR_SUPPLY("vmmc", "sh_mmcif.1"),
  84 };
  85
  86 /* MMCIF */
  87 static struct sh_mmcif_plat_data mmcif1_pdata __initdata = {
  88         .caps           = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
  89 };
  90
  91 static struct resource mmcif1_resources[] __initdata = {
  92         DEFINE_RES_MEM_NAMED(0xee220000, 0x80, "MMCIF1"),
  93         DEFINE_RES_IRQ(gic_spi(170)),
  94 };
  95
  96 /* Ether */
  97 static struct sh_eth_plat_data ether_pdata __initdata = {
  98         .phy                    = 0x1,
  99         .edmac_endian           = EDMAC_LITTLE_ENDIAN,
 100         .phy_interface          = PHY_INTERFACE_MODE_RMII,
 101         .ether_link_active_low  = 1,
 102 };
 103
 104 static struct resource ether_resources[] __initdata = {
 105         DEFINE_RES_MEM(0xee700000, 0x400),
 106         DEFINE_RES_IRQ(gic_spi(162)),
 107 };
 108
 109 static const struct pinctrl_map lager_pinctrl_map[] = {
 110         /* SCIF0 (CN19: DEBUG SERIAL0) */
 111         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790",
 112                                   "scif0_data", "scif0"),
 113         /* SCIF1 (CN20: DEBUG SERIAL1) */
 114         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.7", "pfc-r8a7790",
 115                                   "scif1_data", "scif1"),
 116         /* MMCIF1 */
 117         PIN_MAP_MUX_GROUP_DEFAULT("sh_mmcif.1", "pfc-r8a7790",
 118                                   "mmc1_data8", "mmc1"),
 119         PIN_MAP_MUX_GROUP_DEFAULT("sh_mmcif.1", "pfc-r8a7790",
 120                                   "mmc1_ctrl", "mmc1"),
 121         /* Ether */
 122         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 123                                   "eth_link", "eth"),
 124         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 125                                   "eth_mdio", "eth"),
 126         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 127                                   "eth_rmii", "eth"),
 128         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 129                                   "intc_irq0", "intc"),
 130 };
 131
 132 static void __init lager_add_standard_devices(void)
 133 {
 134         r8a7790_clock_init();
 135
 136         pinctrl_register_mappings(lager_pinctrl_map,
 137                                   ARRAY_SIZE(lager_pinctrl_map));
 138         r8a7790_pinmux_init();
 139
 140         r8a7790_add_standard_devices();
 141         platform_device_register_data(&platform_bus, "leds-gpio", -1,
 142                                       &lager_leds_pdata,
 143                                       sizeof(lager_leds_pdata));
 144         platform_device_register_data(&platform_bus, "gpio-keys", -1,
 145                                       &lager_keys_pdata,
 146                                       sizeof(lager_keys_pdata));
 147         regulator_register_always_on(0, "fixed-3.3V", fixed3v3_power_consumers,
 148                                      ARRAY_SIZE(fixed3v3_power_consumers), 3300000);
 149         platform_device_register_resndata(&platform_bus, "sh_mmcif", 1,
 150                                           mmcif1_resources, ARRAY_SIZE(mmcif1_resources),
 151                                           &mmcif1_pdata, sizeof(mmcif1_pdata));
 152
 153         platform_device_register_resndata(&platform_bus, "r8a7790-ether", -1,
 154                                           ether_resources,
 155                                           ARRAY_SIZE(ether_resources),
 156                                           &ether_pdata, sizeof(ether_pdata));
 157 }
 158
 159 /*
 160  * Ether LEDs on the Lager board are named LINK and ACTIVE which corresponds
 161  * to non-default 01 setting of the Micrel KSZ8041 PHY control register 1 bits
 162  * 14-15. We have to set them back to 01 from the default 00 value each time
 163  * the PHY is reset. It's also important because the PHY's LED0 signal is
 164  * connected to SoC's ETH_LINK signal and in the PHY's default mode it will
 165  * bounce on and off after each packet, which we apparently want to avoid.
 166  */
 167 static int lager_ksz8041_fixup(struct phy_device *phydev)
 168 {
 169         u16 phyctrl1 = phy_read(phydev, 0x1e);
 170
 171         phyctrl1 &= ~0xc000;
 172         phyctrl1 |= 0x4000;
 173         return phy_write(phydev, 0x1e, phyctrl1);
 174 }
 175
 176 static void __init lager_init(void)
 177 {
 178         lager_add_standard_devices();
 179
 180         phy_register_fixup_for_id("r8a7790-ether-ff:01", lager_ksz8041_fixup);
 181 }
 182
 183 static const char *lager_boards_compat_dt[] __initdata = {
 184         "renesas,lager",
 185         NULL,
 186 };
 187
 188 DT_MACHINE_START(LAGER_DT, "lager")
 189         .init_early     = r8a7790_init_delay,
 190         .init_time      = r8a7790_timer_init,
 191         .init_machine   = lager_init,
 192         .dt_compat      = lager_boards_compat_dt,
 193 MACHINE_END