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
  18 #include <linux/dma-mapping.h>
  19 #include <linux/kernel.h>
  20 #include <linux/of_platform.h>
  21 #include <linux/platform_data/rcar-du.h>
  22
  23 #include <asm/mach/arch.h>
  24
  25 #include "clock.h"
  26 #include "common.h"
  27 #include "irqs.h"
  28 #include "r8a7791.h"
  29 #include "rcar-gen2.h"
  30
  31 /* DU */
  32 static struct rcar_du_encoder_data koelsch_du_encoders[] = {
  33         {
  34                 .type = RCAR_DU_ENCODER_NONE,
  35                 .output = RCAR_DU_OUTPUT_LVDS0,
  36                 .connector.lvds.panel = {
  37                         .width_mm = 210,
  38                         .height_mm = 158,
  39                         .mode = {
  40                                 .pixelclock = 65000000,
  41                                 .hactive = 1024,
  42                                 .hfront_porch = 20,
  43                                 .hback_porch = 160,
  44                                 .hsync_len = 136,
  45                                 .vactive = 768,
  46                                 .vfront_porch = 3,
  47                                 .vback_porch = 29,
  48                                 .vsync_len = 6,
  49                         },
  50                 },
  51         },
  52 };
  53
  54 static struct rcar_du_platform_data koelsch_du_pdata = {
  55         .encoders = koelsch_du_encoders,
  56         .num_encoders = ARRAY_SIZE(koelsch_du_encoders),
  57 };
  58
  59 static const struct resource du_resources[] __initconst = {
  60         DEFINE_RES_MEM(0xfeb00000, 0x40000),
  61         DEFINE_RES_MEM_NAMED(0xfeb90000, 0x1c, "lvds.0"),
  62         DEFINE_RES_IRQ(gic_spi(256)),
  63         DEFINE_RES_IRQ(gic_spi(268)),
  64 };
  65
  66 static void __init koelsch_add_du_device(void)
  67 {
  68         struct platform_device_info info = {
  69                 .name = "rcar-du-r8a7791",
  70                 .id = -1,
  71                 .res = du_resources,
  72                 .num_res = ARRAY_SIZE(du_resources),
  73                 .data = &koelsch_du_pdata,
  74                 .size_data = sizeof(koelsch_du_pdata),
  75                 .dma_mask = DMA_BIT_MASK(32),
  76         };
  77
  78         platform_device_register_full(&info);
  79 }
  80
  81 /*
  82  * This is a really crude hack to provide clkdev support to platform
  83  * devices until they get moved to DT.
  84  */
  85 static const struct clk_name clk_names[] __initconst = {
  86         { "du0", "du.0", "rcar-du-r8a7791" },
  87         { "du1", "du.1", "rcar-du-r8a7791" },
  88         { "lvds0", "lvds.0", "rcar-du-r8a7791" },
  89 };
  90
  91 static void __init koelsch_add_standard_devices(void)
  92 {
  93         shmobile_clk_workaround(clk_names, ARRAY_SIZE(clk_names), false);
  94         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
  95
  96         koelsch_add_du_device();
  97 }
  98
  99 static const char * const koelsch_boards_compat_dt[] __initconst = {
 100         "renesas,koelsch",
 101         "renesas,koelsch-reference",
 102         NULL,
 103 };
 104
 105 DT_MACHINE_START(KOELSCH_DT, "koelsch")
 106         .smp            = smp_ops(r8a7791_smp_ops),
 107         .init_early     = shmobile_init_delay,
 108         .init_time      = rcar_gen2_timer_init,
 109         .init_machine   = koelsch_add_standard_devices,
 110         .init_late      = shmobile_init_late,
 111         .reserve        = rcar_gen2_reserve,
 112         .dt_compat      = koelsch_boards_compat_dt,
 113 MACHINE_END