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

   1 /*
   2  * Koelsch board support
   3  *
   4  * Copyright (C) 2013  Renesas Electronics Corporation
   5  * Copyright (C) 2013  Renesas Solutions Corp.
   6  * Copyright (C) 2013  Magnus Damm
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; version 2 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #include <linux/dma-mapping.h>
  23 #include <linux/gpio.h>
  24 #include <linux/gpio_keys.h>
  25 #include <linux/input.h>
  26 #include <linux/kernel.h>
  27 #include <linux/leds.h>
  28 #include <linux/phy.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/sh_eth.h>
  34 #include <mach/common.h>
  35 #include <mach/irqs.h>
  36 #include <mach/r8a7791.h>
  37 #include <mach/rcar-gen2.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/mach/arch.h>
  40
  41 /* DU */
  42 static struct rcar_du_encoder_data koelsch_du_encoders[] = {
  43         {
  44                 .type = RCAR_DU_ENCODER_NONE,
  45                 .output = RCAR_DU_OUTPUT_LVDS0,
  46                 .connector.lvds.panel = {
  47                         .width_mm = 210,
  48                         .height_mm = 158,
  49                         .mode = {
  50                                 .clock = 65000,
  51                                 .hdisplay = 1024,
  52                                 .hsync_start = 1048,
  53                                 .hsync_end = 1184,
  54                                 .htotal = 1344,
  55                                 .vdisplay = 768,
  56                                 .vsync_start = 771,
  57                                 .vsync_end = 777,
  58                                 .vtotal = 806,
  59                                 .flags = 0,
  60                         },
  61                 },
  62         },
  63 };
  64
  65 static const struct rcar_du_platform_data koelsch_du_pdata __initconst = {
  66         .encoders = koelsch_du_encoders,
  67         .num_encoders = ARRAY_SIZE(koelsch_du_encoders),
  68 };
  69
  70 static const struct resource du_resources[] __initconst = {
  71         DEFINE_RES_MEM(0xfeb00000, 0x40000),
  72         DEFINE_RES_MEM_NAMED(0xfeb90000, 0x1c, "lvds.0"),
  73         DEFINE_RES_IRQ(gic_spi(256)),
  74         DEFINE_RES_IRQ(gic_spi(268)),
  75 };
  76
  77 static void __init koelsch_add_du_device(void)
  78 {
  79         struct platform_device_info info = {
  80                 .name = "rcar-du-r8a7791",
  81                 .id = -1,
  82                 .res = du_resources,
  83                 .num_res = ARRAY_SIZE(du_resources),
  84                 .data = &koelsch_du_pdata,
  85                 .size_data = sizeof(koelsch_du_pdata),
  86                 .dma_mask = DMA_BIT_MASK(32),
  87         };
  88
  89         platform_device_register_full(&info);
  90 }
  91
  92 /* Ether */
  93 static const struct sh_eth_plat_data ether_pdata __initconst = {
  94         .phy                    = 0x1,
  95         .edmac_endian           = EDMAC_LITTLE_ENDIAN,
  96         .phy_interface          = PHY_INTERFACE_MODE_RMII,
  97         .ether_link_active_low  = 1,
  98 };
  99
 100 static const struct resource ether_resources[] __initconst = {
 101         DEFINE_RES_MEM(0xee700000, 0x400),
 102         DEFINE_RES_IRQ(gic_spi(162)),
 103 };
 104
 105 /* LEDS */
 106 static struct gpio_led koelsch_leds[] = {
 107         {
 108                 .name           = "led8",
 109                 .gpio           = RCAR_GP_PIN(2, 21),
 110                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 111         }, {
 112                 .name           = "led7",
 113                 .gpio           = RCAR_GP_PIN(2, 20),
 114                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 115         }, {
 116                 .name           = "led6",
 117                 .gpio           = RCAR_GP_PIN(2, 19),
 118                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 119         },
 120 };
 121
 122 static const struct gpio_led_platform_data koelsch_leds_pdata __initconst = {
 123         .leds           = koelsch_leds,
 124         .num_leds       = ARRAY_SIZE(koelsch_leds),
 125 };
 126
 127 /* GPIO KEY */
 128 #define GPIO_KEY(c, g, d, ...) \
 129         { .code = c, .gpio = g, .desc = d, .active_low = 1, \
 130           .wakeup = 1, .debounce_interval = 20 }
 131
 132 static struct gpio_keys_button gpio_buttons[] = {
 133         GPIO_KEY(KEY_4,         RCAR_GP_PIN(5, 3),      "SW2-pin4"),
 134         GPIO_KEY(KEY_3,         RCAR_GP_PIN(5, 2),      "SW2-pin3"),
 135         GPIO_KEY(KEY_2,         RCAR_GP_PIN(5, 1),      "SW2-pin2"),
 136         GPIO_KEY(KEY_1,         RCAR_GP_PIN(5, 0),      "SW2-pin1"),
 137         GPIO_KEY(KEY_G,         RCAR_GP_PIN(7, 6),      "SW36"),
 138         GPIO_KEY(KEY_F,         RCAR_GP_PIN(7, 5),      "SW35"),
 139         GPIO_KEY(KEY_E,         RCAR_GP_PIN(7, 4),      "SW34"),
 140         GPIO_KEY(KEY_D,         RCAR_GP_PIN(7, 3),      "SW33"),
 141         GPIO_KEY(KEY_C,         RCAR_GP_PIN(7, 2),      "SW32"),
 142         GPIO_KEY(KEY_B,         RCAR_GP_PIN(7, 1),      "SW31"),
 143         GPIO_KEY(KEY_A,         RCAR_GP_PIN(7, 0),      "SW30"),
 144 };
 145
 146 static const struct gpio_keys_platform_data koelsch_keys_pdata __initconst = {
 147         .buttons        = gpio_buttons,
 148         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 149 };
 150
 151 static const struct pinctrl_map koelsch_pinctrl_map[] = {
 152         /* DU */
 153         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7791", "pfc-r8a7791",
 154                                   "du_rgb666", "du"),
 155         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7791", "pfc-r8a7791",
 156                                   "du_sync", "du"),
 157         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7791", "pfc-r8a7791",
 158                                   "du_clk_out_0", "du"),
 159         /* Ether */
 160         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 161                                   "eth_link", "eth"),
 162         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 163                                   "eth_mdio", "eth"),
 164         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 165                                   "eth_rmii", "eth"),
 166         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 167                                   "intc_irq0", "intc"),
 168         /* SCIF0 (CN19: DEBUG SERIAL0) */
 169         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7791",
 170                                   "scif0_data_d", "scif0"),
 171         /* SCIF1 (CN20: DEBUG SERIAL1) */
 172         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.7", "pfc-r8a7791",
 173                                   "scif1_data_d", "scif1"),
 174 };
 175
 176 static void __init koelsch_add_standard_devices(void)
 177 {
 178         r8a7791_clock_init();
 179         pinctrl_register_mappings(koelsch_pinctrl_map,
 180                                   ARRAY_SIZE(koelsch_pinctrl_map));
 181         r8a7791_pinmux_init();
 182         r8a7791_add_standard_devices();
 183         platform_device_register_resndata(&platform_bus, "r8a7791-ether", -1,
 184                                           ether_resources,
 185                                           ARRAY_SIZE(ether_resources),
 186                                           &ether_pdata, sizeof(ether_pdata));
 187         platform_device_register_data(&platform_bus, "leds-gpio", -1,
 188                                       &koelsch_leds_pdata,
 189                                       sizeof(koelsch_leds_pdata));
 190         platform_device_register_data(&platform_bus, "gpio-keys", -1,
 191                                       &koelsch_keys_pdata,
 192                                       sizeof(koelsch_keys_pdata));
 193
 194         koelsch_add_du_device();
 195 }
 196
 197 /*
 198  * Ether LEDs on the Koelsch board are named LINK and ACTIVE which corresponds
 199  * to non-default 01 setting of the Micrel KSZ8041 PHY control register 1 bits
 200  * 14-15. We have to set them back to 01 from the default 00 value each time
 201  * the PHY is reset. It's also important because the PHY's LED0 signal is
 202  * connected to SoC's ETH_LINK signal and in the PHY's default mode it will
 203  * bounce on and off after each packet, which we apparently want to avoid.
 204  */
 205 static int koelsch_ksz8041_fixup(struct phy_device *phydev)
 206 {
 207         u16 phyctrl1 = phy_read(phydev, 0x1e);
 208
 209         phyctrl1 &= ~0xc000;
 210         phyctrl1 |= 0x4000;
 211         return phy_write(phydev, 0x1e, phyctrl1);
 212 }
 213
 214 static void __init koelsch_init(void)
 215 {
 216         koelsch_add_standard_devices();
 217
 218         if (IS_ENABLED(CONFIG_PHYLIB))
 219                 phy_register_fixup_for_id("r8a7791-ether-ff:01",
 220                                           koelsch_ksz8041_fixup);
 221 }
 222
 223 static const char * const koelsch_boards_compat_dt[] __initconst = {
 224         "renesas,koelsch",
 225         NULL,
 226 };
 227
 228 DT_MACHINE_START(KOELSCH_DT, "koelsch")
 229         .smp            = smp_ops(r8a7791_smp_ops),
 230         .init_early     = r8a7791_init_early,
 231         .init_time      = rcar_gen2_timer_init,
 232         .init_machine   = koelsch_init,
 233         .init_late      = shmobile_init_late,
 234         .dt_compat      = koelsch_boards_compat_dt,
 235 MACHINE_END