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

   1 /*
   2  * Koelsch board support - Reference DT implementation
   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/kernel.h>
  24 #include <linux/of_platform.h>
  25 #include <linux/platform_data/rcar-du.h>
  26
  27 #include <asm/mach/arch.h>
  28
  29 #include "clock.h"
  30 #include "common.h"
  31 #include "irqs.h"
  32 #include "r8a7791.h"
  33 #include "rcar-gen2.h"
  34
  35 /* DU */
  36 static struct rcar_du_encoder_data koelsch_du_encoders[] = {
  37         {
  38                 .type = RCAR_DU_ENCODER_NONE,
  39                 .output = RCAR_DU_OUTPUT_LVDS0,
  40                 .connector.lvds.panel = {
  41                         .width_mm = 210,
  42                         .height_mm = 158,
  43                         .mode = {
  44                                 .pixelclock = 65000000,
  45                                 .hactive = 1024,
  46                                 .hfront_porch = 20,
  47                                 .hback_porch = 160,
  48                                 .hsync_len = 136,
  49                                 .vactive = 768,
  50                                 .vfront_porch = 3,
  51                                 .vback_porch = 29,
  52                                 .vsync_len = 6,
  53                         },
  54                 },
  55         },
  56 };
  57
  58 static struct rcar_du_platform_data koelsch_du_pdata = {
  59         .encoders = koelsch_du_encoders,
  60         .num_encoders = ARRAY_SIZE(koelsch_du_encoders),
  61 };
  62
  63 static const struct resource du_resources[] __initconst = {
  64         DEFINE_RES_MEM(0xfeb00000, 0x40000),
  65         DEFINE_RES_MEM_NAMED(0xfeb90000, 0x1c, "lvds.0"),
  66         DEFINE_RES_IRQ(gic_spi(256)),
  67         DEFINE_RES_IRQ(gic_spi(268)),
  68 };
  69
  70 static void __init koelsch_add_du_device(void)
  71 {
  72         struct platform_device_info info = {
  73                 .name = "rcar-du-r8a7791",
  74                 .id = -1,
  75                 .res = du_resources,
  76                 .num_res = ARRAY_SIZE(du_resources),
  77                 .data = &koelsch_du_pdata,
  78                 .size_data = sizeof(koelsch_du_pdata),
  79                 .dma_mask = DMA_BIT_MASK(32),
  80         };
  81
  82         platform_device_register_full(&info);
  83 }
  84
  85 /*
  86  * This is a really crude hack to provide clkdev support to platform
  87  * devices until they get moved to DT.
  88  */
  89 static const struct clk_name clk_names[] __initconst = {
  90         { "du0", "du.0", "rcar-du-r8a7791" },
  91         { "du1", "du.1", "rcar-du-r8a7791" },
  92         { "lvds0", "lvds.0", "rcar-du-r8a7791" },
  93 };
  94
  95 static void __init koelsch_add_standard_devices(void)
  96 {
  97         shmobile_clk_workaround(clk_names, ARRAY_SIZE(clk_names), false);
  98         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  99
 100         koelsch_add_du_device();
 101 }
 102
 103 static const char * const koelsch_boards_compat_dt[] __initconst = {
 104         "renesas,koelsch",
 105         "renesas,koelsch-reference",
 106         NULL,
 107 };
 108
 109 DT_MACHINE_START(KOELSCH_DT, "koelsch")
 110         .smp            = smp_ops(r8a7791_smp_ops),
 111         .init_early     = shmobile_init_delay,
 112         .init_time      = rcar_gen2_timer_init,
 113         .init_machine   = koelsch_add_standard_devices,
 114         .init_late      = shmobile_init_late,
 115         .reserve        = rcar_gen2_reserve,
 116         .dt_compat      = koelsch_boards_compat_dt,
 117 MACHINE_END