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/irq.h>
  27 #include <linux/kernel.h>
  28 #include <linux/leds.h>
  29 #include <linux/phy.h>
  30 #include <linux/pinctrl/machine.h>
  31 #include <linux/platform_data/gpio-rcar.h>
  32 #include <linux/platform_data/rcar-du.h>
  33 #include <linux/platform_device.h>
  34 #include <linux/sh_eth.h>
  35 #include <mach/common.h>
  36 #include <mach/irqs.h>
  37 #include <mach/r8a7791.h>
  38 #include <mach/rcar-gen2.h>
  39 #include <asm/mach-types.h>
  40 #include <asm/mach/arch.h>
  41
  42 /* DU */
  43 static struct rcar_du_encoder_data koelsch_du_encoders[] = {
  44         {
  45                 .type = RCAR_DU_ENCODER_NONE,
  46                 .output = RCAR_DU_OUTPUT_LVDS0,
  47                 .connector.lvds.panel = {
  48                         .width_mm = 210,
  49                         .height_mm = 158,
  50                         .mode = {
  51                                 .clock = 65000,
  52                                 .hdisplay = 1024,
  53                                 .hsync_start = 1048,
  54                                 .hsync_end = 1184,
  55                                 .htotal = 1344,
  56                                 .vdisplay = 768,
  57                                 .vsync_start = 771,
  58                                 .vsync_end = 777,
  59                                 .vtotal = 806,
  60                                 .flags = 0,
  61                         },
  62                 },
  63         },
  64 };
  65
  66 static const struct rcar_du_platform_data koelsch_du_pdata __initconst = {
  67         .encoders = koelsch_du_encoders,
  68         .num_encoders = ARRAY_SIZE(koelsch_du_encoders),
  69 };
  70
  71 static const struct resource du_resources[] __initconst = {
  72         DEFINE_RES_MEM(0xfeb00000, 0x40000),
  73         DEFINE_RES_MEM_NAMED(0xfeb90000, 0x1c, "lvds.0"),
  74         DEFINE_RES_IRQ(gic_spi(256)),
  75         DEFINE_RES_IRQ(gic_spi(268)),
  76 };
  77
  78 static void __init koelsch_add_du_device(void)
  79 {
  80         struct platform_device_info info = {
  81                 .name = "rcar-du-r8a7791",
  82                 .id = -1,
  83                 .res = du_resources,
  84                 .num_res = ARRAY_SIZE(du_resources),
  85                 .data = &koelsch_du_pdata,
  86                 .size_data = sizeof(koelsch_du_pdata),
  87                 .dma_mask = DMA_BIT_MASK(32),
  88         };
  89
  90         platform_device_register_full(&info);
  91 }
  92
  93 /* Ether */
  94 static const struct sh_eth_plat_data ether_pdata __initconst = {
  95         .phy                    = 0x1,
  96         .phy_irq                = irq_pin(0),
  97         .edmac_endian           = EDMAC_LITTLE_ENDIAN,
  98         .phy_interface          = PHY_INTERFACE_MODE_RMII,
  99         .ether_link_active_low  = 1,
 100 };
 101
 102 static const struct resource ether_resources[] __initconst = {
 103         DEFINE_RES_MEM(0xee700000, 0x400),
 104         DEFINE_RES_IRQ(gic_spi(162)),
 105 };
 106
 107 /* LEDS */
 108 static struct gpio_led koelsch_leds[] = {
 109         {
 110                 .name           = "led8",
 111                 .gpio           = RCAR_GP_PIN(2, 21),
 112                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 113         }, {
 114                 .name           = "led7",
 115                 .gpio           = RCAR_GP_PIN(2, 20),
 116                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 117         }, {
 118                 .name           = "led6",
 119                 .gpio           = RCAR_GP_PIN(2, 19),
 120                 .default_state  = LEDS_GPIO_DEFSTATE_ON,
 121         },
 122 };
 123
 124 static const struct gpio_led_platform_data koelsch_leds_pdata __initconst = {
 125         .leds           = koelsch_leds,
 126         .num_leds       = ARRAY_SIZE(koelsch_leds),
 127 };
 128
 129 /* GPIO KEY */
 130 #define GPIO_KEY(c, g, d, ...) \
 131         { .code = c, .gpio = g, .desc = d, .active_low = 1, \
 132           .wakeup = 1, .debounce_interval = 20 }
 133
 134 static struct gpio_keys_button gpio_buttons[] = {
 135         GPIO_KEY(KEY_4,         RCAR_GP_PIN(5, 3),      "SW2-pin4"),
 136         GPIO_KEY(KEY_3,         RCAR_GP_PIN(5, 2),      "SW2-pin3"),
 137         GPIO_KEY(KEY_2,         RCAR_GP_PIN(5, 1),      "SW2-pin2"),
 138         GPIO_KEY(KEY_1,         RCAR_GP_PIN(5, 0),      "SW2-pin1"),
 139         GPIO_KEY(KEY_G,         RCAR_GP_PIN(7, 6),      "SW36"),
 140         GPIO_KEY(KEY_F,         RCAR_GP_PIN(7, 5),      "SW35"),
 141         GPIO_KEY(KEY_E,         RCAR_GP_PIN(7, 4),      "SW34"),
 142         GPIO_KEY(KEY_D,         RCAR_GP_PIN(7, 3),      "SW33"),
 143         GPIO_KEY(KEY_C,         RCAR_GP_PIN(7, 2),      "SW32"),
 144         GPIO_KEY(KEY_B,         RCAR_GP_PIN(7, 1),      "SW31"),
 145         GPIO_KEY(KEY_A,         RCAR_GP_PIN(7, 0),      "SW30"),
 146 };
 147
 148 static const struct gpio_keys_platform_data koelsch_keys_pdata __initconst = {
 149         .buttons        = gpio_buttons,
 150         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 151 };
 152
 153 /* SATA0 */
 154 static const struct resource sata0_resources[] __initconst = {
 155         DEFINE_RES_MEM(0xee300000, 0x2000),
 156         DEFINE_RES_IRQ(gic_spi(105)),
 157 };
 158
 159 static const struct platform_device_info sata0_info __initconst = {
 160         .parent         = &platform_bus,
 161         .name           = "sata-r8a7791",
 162         .id             = 0,
 163         .res            = sata0_resources,
 164         .num_res        = ARRAY_SIZE(sata0_resources),
 165         .dma_mask       = DMA_BIT_MASK(32),
 166 };
 167
 168 /* I2C */
 169 static const struct resource i2c_resources[] __initconst = {
 170         /* I2C0 */
 171         DEFINE_RES_MEM(0xE6508000, 0x40),
 172         DEFINE_RES_IRQ(gic_spi(287)),
 173         /* I2C1 */
 174         DEFINE_RES_MEM(0xE6518000, 0x40),
 175         DEFINE_RES_IRQ(gic_spi(288)),
 176         /* I2C2 */
 177         DEFINE_RES_MEM(0xE6530000, 0x40),
 178         DEFINE_RES_IRQ(gic_spi(286)),
 179         /* I2C3 */
 180         DEFINE_RES_MEM(0xE6540000, 0x40),
 181         DEFINE_RES_IRQ(gic_spi(290)),
 182         /* I2C4 */
 183         DEFINE_RES_MEM(0xE6520000, 0x40),
 184         DEFINE_RES_IRQ(gic_spi(19)),
 185         /* I2C5 */
 186         DEFINE_RES_MEM(0xE6528000, 0x40),
 187         DEFINE_RES_IRQ(gic_spi(20)),
 188 };
 189
 190 static void __init koelsch_add_i2c(unsigned idx)
 191 {
 192         unsigned res_idx = idx * 2;
 193
 194         BUG_ON(res_idx >= ARRAY_SIZE(i2c_resources));
 195
 196         platform_device_register_simple("i2c-rcar_gen2", idx,
 197                                         i2c_resources + res_idx, 2);
 198 }
 199
 200 static const struct pinctrl_map koelsch_pinctrl_map[] = {
 201         /* DU */
 202         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7791", "pfc-r8a7791",
 203                                   "du_rgb666", "du"),
 204         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7791", "pfc-r8a7791",
 205                                   "du_sync", "du"),
 206         PIN_MAP_MUX_GROUP_DEFAULT("rcar-du-r8a7791", "pfc-r8a7791",
 207                                   "du_clk_out_0", "du"),
 208         /* Ether */
 209         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 210                                   "eth_link", "eth"),
 211         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 212                                   "eth_mdio", "eth"),
 213         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 214                                   "eth_rmii", "eth"),
 215         PIN_MAP_MUX_GROUP_DEFAULT("r8a7791-ether", "pfc-r8a7791",
 216                                   "intc_irq0", "intc"),
 217         /* SCIF0 (CN19: DEBUG SERIAL0) */
 218         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7791",
 219                                   "scif0_data_d", "scif0"),
 220         /* SCIF1 (CN20: DEBUG SERIAL1) */
 221         PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.7", "pfc-r8a7791",
 222                                   "scif1_data_d", "scif1"),
 223         /* I2C1 */
 224         PIN_MAP_MUX_GROUP_DEFAULT("i2c-rcar_gen2.1", "pfc-r8a7791",
 225                                   "i2c1_e", "i2c1"),
 226         /* I2C2 */
 227         PIN_MAP_MUX_GROUP_DEFAULT("i2c-rcar_gen2.2", "pfc-r8a7791",
 228                                   "i2c2", "i2c2"),
 229         /* I2C4 */
 230         PIN_MAP_MUX_GROUP_DEFAULT("i2c-rcar_gen2.4", "pfc-r8a7791",
 231                                   "i2c4_c", "i2c4"),
 232 };
 233
 234 static void __init koelsch_add_standard_devices(void)
 235 {
 236         r8a7791_clock_init();
 237         pinctrl_register_mappings(koelsch_pinctrl_map,
 238                                   ARRAY_SIZE(koelsch_pinctrl_map));
 239         r8a7791_pinmux_init();
 240         r8a7791_add_standard_devices();
 241         platform_device_register_resndata(&platform_bus, "r8a7791-ether", -1,
 242                                           ether_resources,
 243                                           ARRAY_SIZE(ether_resources),
 244                                           &ether_pdata, sizeof(ether_pdata));
 245         platform_device_register_data(&platform_bus, "leds-gpio", -1,
 246                                       &koelsch_leds_pdata,
 247                                       sizeof(koelsch_leds_pdata));
 248         platform_device_register_data(&platform_bus, "gpio-keys", -1,
 249                                       &koelsch_keys_pdata,
 250                                       sizeof(koelsch_keys_pdata));
 251
 252         koelsch_add_du_device();
 253
 254         platform_device_register_full(&sata0_info);
 255
 256         koelsch_add_i2c(1);
 257         koelsch_add_i2c(2);
 258         koelsch_add_i2c(4);
 259         koelsch_add_i2c(5);
 260 }
 261
 262 /*
 263  * Ether LEDs on the Koelsch board are named LINK and ACTIVE which corresponds
 264  * to non-default 01 setting of the Micrel KSZ8041 PHY control register 1 bits
 265  * 14-15. We have to set them back to 01 from the default 00 value each time
 266  * the PHY is reset. It's also important because the PHY's LED0 signal is
 267  * connected to SoC's ETH_LINK signal and in the PHY's default mode it will
 268  * bounce on and off after each packet, which we apparently want to avoid.
 269  */
 270 static int koelsch_ksz8041_fixup(struct phy_device *phydev)
 271 {
 272         u16 phyctrl1 = phy_read(phydev, 0x1e);
 273
 274         phyctrl1 &= ~0xc000;
 275         phyctrl1 |= 0x4000;
 276         return phy_write(phydev, 0x1e, phyctrl1);
 277 }
 278
 279 static void __init koelsch_init(void)
 280 {
 281         koelsch_add_standard_devices();
 282
 283         irq_set_irq_type(irq_pin(0), IRQ_TYPE_LEVEL_LOW);
 284
 285         if (IS_ENABLED(CONFIG_PHYLIB))
 286                 phy_register_fixup_for_id("r8a7791-ether-ff:01",
 287                                           koelsch_ksz8041_fixup);
 288 }
 289
 290 static const char * const koelsch_boards_compat_dt[] __initconst = {
 291         "renesas,koelsch",
 292         NULL,
 293 };
 294
 295 DT_MACHINE_START(KOELSCH_DT, "koelsch")
 296         .smp            = smp_ops(r8a7791_smp_ops),
 297         .init_early     = r8a7791_init_early,
 298         .init_time      = rcar_gen2_timer_init,
 299         .init_machine   = koelsch_init,
 300         .init_late      = shmobile_init_late,
 301         .dt_compat      = koelsch_boards_compat_dt,
 302 MACHINE_END