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_data/rcar-du.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/phy.h>
  34 #include <linux/regulator/fixed.h>
  35 #include <linux/regulator/machine.h>
  36 #include <linux/sh_eth.h>
  37 #include <mach/common.h>
  38 #include <mach/irqs.h>
  39 #include <mach/r8a7790.h>
  40 #include <asm/mach-types.h>
  41 #include <asm/mach/arch.h>
  42
  43 /* DU */
  44 static struct rcar_du_encoder_data lager_du_encoders[] = {
  45         {
  46                 .type = RCAR_DU_ENCODER_VGA,
  47                 .output = RCAR_DU_OUTPUT_DPAD0,
  48         }, {
  49                 .type = RCAR_DU_ENCODER_NONE,
  50                 .output = RCAR_DU_OUTPUT_LVDS1,
  51                 .connector.lvds.panel = {
  52                         .width_mm = 210,
  53                         .height_mm = 158,
  54                         .mode = {
  55                                 .clock = 65000,
  56                                 .hdisplay = 1024,
  57                                 .hsync_start = 1048,
  58                                 .hsync_end = 1184,
  59                                 .htotal = 1344,
  60                                 .vdisplay = 768,
  61                                 .vsync_start = 771,
  62                                 .vsync_end = 777,
  63                                 .vtotal = 806,
  64                                 .flags = 0,
  65                         },
  66                 },
  67         },
  68 };
  69
  70 static const struct rcar_du_platform_data lager_du_pdata __initconst = {
  71         .encoders = lager_du_encoders,
  72         .num_encoders = ARRAY_SIZE(lager_du_encoders),
  73 };
  74
  75 static const struct resource du_resources[] __initconst = {
  76         DEFINE_RES_MEM(0xfeb00000, 0x70000),
  77         DEFINE_RES_MEM_NAMED(0xfeb90000, 0x1c, "lvds.0"),
  78         DEFINE_RES_MEM_NAMED(0xfeb94000, 0x1c, "lvds.1"),
  79         DEFINE_RES_IRQ(gic_spi(256)),
  80         DEFINE_RES_IRQ(gic_spi(268)),
  81         DEFINE_RES_IRQ(gic_spi(269)),
  82 };
  83
  84 static void __init lager_add_du_device(void)
  85 {
  86         struct platform_device_info info = {
  87                 .name = "rcar-du-r8a7790",
  88                 .id = -1,
  89                 .res = du_resources,
  90                 .num_res = ARRAY_SIZE(du_resources),
  91                 .data = &lager_du_pdata,
  92                 .size_data = sizeof(lager_du_pdata),
  93                 .dma_mask = DMA_BIT_MASK(32),
  94         };
  95
  96         platform_device_register_full(&info);
  97 }
  98
  99 /* LEDS */
 100 static struct gpio_led lager_leds[] = {
 101         {
 102                 .name           = "led8",
 103                 .gpio           = RCAR_GP_PIN(5, 17),
 104                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 105         }, {
 106                 .name           = "led7",
 107                 .gpio           = RCAR_GP_PIN(4, 23),
 108                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 109         }, {
 110                 .name           = "led6",
 111                 .gpio           = RCAR_GP_PIN(4, 22),
 112                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 113         },
 114 };
 115
 116 static const struct gpio_led_platform_data lager_leds_pdata __initconst = {
 117         .leds           = lager_leds,
 118         .num_leds       = ARRAY_SIZE(lager_leds),
 119 };
 120
 121 /* GPIO KEY */
 122 #define GPIO_KEY(c, g, d, ...) \
 123         { .code = c, .gpio = g, .desc = d, .active_low = 1 }
 124
 125 static struct gpio_keys_button gpio_buttons[] = {
 126         GPIO_KEY(KEY_4,         RCAR_GP_PIN(1, 28),     "SW2-pin4"),
 127         GPIO_KEY(KEY_3,         RCAR_GP_PIN(1, 26),     "SW2-pin3"),
 128         GPIO_KEY(KEY_2,         RCAR_GP_PIN(1, 24),     "SW2-pin2"),
 129         GPIO_KEY(KEY_1,         RCAR_GP_PIN(1, 14),     "SW2-pin1"),
 130 };
 131
 132 static const struct gpio_keys_platform_data lager_keys_pdata __initconst = {
 133         .buttons        = gpio_buttons,
 134         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 135 };
 136
 137 /* Fixed 3.3V regulator to be used by MMCIF */
 138 static struct regulator_consumer_supply fixed3v3_power_consumers[] =
 139 {
 140         REGULATOR_SUPPLY("vmmc", "sh_mmcif.1"),
 141 };
 142
 143 /* MMCIF */
 144 static const struct sh_mmcif_plat_data mmcif1_pdata __initconst = {
 145         .caps           = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
 146         .clk_ctrl2_present = true,
 147         .ccs_unsupported = true,
 148 };
 149
 150 static const struct resource mmcif1_resources[] __initconst = {
 151         DEFINE_RES_MEM_NAMED(0xee220000, 0x80, "MMCIF1"),
 152         DEFINE_RES_IRQ(gic_spi(170)),
 153 };
 154
 155 /* Ether */
 156 static const struct sh_eth_plat_data ether_pdata __initconst = {
 157         .phy                    = 0x1,
 158         .edmac_endian           = EDMAC_LITTLE_ENDIAN,
 159         .phy_interface          = PHY_INTERFACE_MODE_RMII,
 160         .ether_link_active_low  = 1,
 161 };
 162
 163 static const struct resource ether_resources[] __initconst = {
 164         DEFINE_RES_MEM(0xee700000, 0x400),
 165         DEFINE_RES_IRQ(gic_spi(162)),
 166 };
 167
 168 static const struct pinctrl_map lager_pinctrl_map[] = {
 169         /* DU (CN10: ARGB0, CN13: LVDS) */
 170         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7790", "pfc-r8a7790",
 171                                   "du_rgb666", "du"),
 172         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7790", "pfc-r8a7790",
 173                                   "du_sync_1", "du"),
 174         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7790", "pfc-r8a7790",
 175                                   "du_clk_out_0", "du"),
 176         /* SCIF0 (CN19: DEBUG SERIAL0) */
 177         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790",
 178                                   "scif0_data", "scif0"),
 179         /* SCIF1 (CN20: DEBUG SERIAL1) */
 180         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.7", "pfc-r8a7790",
 181                                   "scif1_data", "scif1"),
 182         /* MMCIF1 */
 183         PIN_MAP_MUX_GROUP_DEFAULT("sh_mmcif.1", "pfc-r8a7790",
 184                                   "mmc1_data8", "mmc1"),
 185         PIN_MAP_MUX_GROUP_DEFAULT("sh_mmcif.1", "pfc-r8a7790",
 186                                   "mmc1_ctrl", "mmc1"),
 187         /* Ether */
 188         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 189                                   "eth_link", "eth"),
 190         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 191                                   "eth_mdio", "eth"),
 192         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 193                                   "eth_rmii", "eth"),
 194         PIN_MAP_MUX_GROUP_DEFAULT("r8a7790-ether", "pfc-r8a7790",
 195                                   "intc_irq0", "intc"),
 196 };
 197
 198 static void __init lager_add_standard_devices(void)
 199 {
 200         r8a7790_clock_init();
 201
 202         pinctrl_register_mappings(lager_pinctrl_map,
 203                                   ARRAY_SIZE(lager_pinctrl_map));
 204         r8a7790_pinmux_init();
 205
 206         r8a7790_add_standard_devices();
 207         platform_device_register_data(&platform_bus, "leds-gpio", -1,
 208                                       &lager_leds_pdata,
 209                                       sizeof(lager_leds_pdata));
 210         platform_device_register_data(&platform_bus, "gpio-keys", -1,
 211                                       &lager_keys_pdata,
 212                                       sizeof(lager_keys_pdata));
 213         regulator_register_always_on(0, "fixed-3.3V", fixed3v3_power_consumers,
 214                                      ARRAY_SIZE(fixed3v3_power_consumers), 3300000);
 215         platform_device_register_resndata(&platform_bus, "sh_mmcif", 1,
 216                                           mmcif1_resources, ARRAY_SIZE(mmcif1_resources),
 217                                           &mmcif1_pdata, sizeof(mmcif1_pdata));
 218
 219         platform_device_register_resndata(&platform_bus, "r8a7790-ether", -1,
 220                                           ether_resources,
 221                                           ARRAY_SIZE(ether_resources),
 222                                           &ether_pdata, sizeof(ether_pdata));
 223
 224         lager_add_du_device();
 225 }
 226
 227 /*
 228  * Ether LEDs on the Lager board are named LINK and ACTIVE which corresponds
 229  * to non-default 01 setting of the Micrel KSZ8041 PHY control register 1 bits
 230  * 14-15. We have to set them back to 01 from the default 00 value each time
 231  * the PHY is reset. It's also important because the PHY's LED0 signal is
 232  * connected to SoC's ETH_LINK signal and in the PHY's default mode it will
 233  * bounce on and off after each packet, which we apparently want to avoid.
 234  */
 235 static int lager_ksz8041_fixup(struct phy_device *phydev)
 236 {
 237         u16 phyctrl1 = phy_read(phydev, 0x1e);
 238
 239         phyctrl1 &= ~0xc000;
 240         phyctrl1 |= 0x4000;
 241         return phy_write(phydev, 0x1e, phyctrl1);
 242 }
 243
 244 static void __init lager_init(void)
 245 {
 246         lager_add_standard_devices();
 247
 248         if (IS_ENABLED(CONFIG_PHYLIB))
 249                 phy_register_fixup_for_id("r8a7790-ether-ff:01",
 250                                           lager_ksz8041_fixup);
 251 }
 252
 253 static const char * const lager_boards_compat_dt[] __initconst = {
 254         "renesas,lager",
 255         NULL,
 256 };
 257
 258 DT_MACHINE_START(LAGER_DT, "lager")
 259         .smp            = smp_ops(r8a7790_smp_ops),
 260         .init_early     = r8a7790_init_early,
 261         .init_time      = rcar_gen2_timer_init,
 262         .init_machine   = lager_init,
 263         .dt_compat      = lager_boards_compat_dt,
 264 MACHINE_END