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/clk.h>
  23 #include <linux/clkdev.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/kernel.h>
  26 #include <linux/of_platform.h>
  27 #include <linux/platform_data/rcar-du.h>
  28 #include <mach/common.h>
  29 #include <mach/irqs.h>
  30 #include <mach/rcar-gen2.h>
  31 #include <mach/r8a7791.h>
  32 #include <asm/mach/arch.h>
  33
  34 /* DU */
  35 static struct rcar_du_encoder_data koelsch_du_encoders[] = {
  36         {
  37                 .type = RCAR_DU_ENCODER_NONE,
  38                 .output = RCAR_DU_OUTPUT_LVDS0,
  39                 .connector.lvds.panel = {
  40                         .width_mm = 210,
  41                         .height_mm = 158,
  42                         .mode = {
  43                                 .clock = 65000,
  44                                 .hdisplay = 1024,
  45                                 .hsync_start = 1048,
  46                                 .hsync_end = 1184,
  47                                 .htotal = 1344,
  48                                 .vdisplay = 768,
  49                                 .vsync_start = 771,
  50                                 .vsync_end = 777,
  51                                 .vtotal = 806,
  52                                 .flags = 0,
  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 static void __init koelsch_add_standard_devices(void)
  86 {
  87         /*
  88          * This is a really crude hack to provide clkdev support to the CMT and
  89          * DU devices until they get moved to DT.
  90          */
  91         static const struct clk_name {
  92                 const char *clk;
  93                 const char *con_id;
  94                 const char *dev_id;
  95         } clk_names[] = {
  96                 { "cmt0", NULL, "sh_cmt.0" },
  97                 { "scifa0", NULL, "sh-sci.0" },
  98                 { "scifa1", NULL, "sh-sci.1" },
  99                 { "scifb0", NULL, "sh-sci.2" },
 100                 { "scifb1", NULL, "sh-sci.3" },
 101                 { "scifb2", NULL, "sh-sci.4" },
 102                 { "scifa2", NULL, "sh-sci.5" },
 103                 { "scif0", NULL, "sh-sci.6" },
 104                 { "scif1", NULL, "sh-sci.7" },
 105                 { "scif2", NULL, "sh-sci.8" },
 106                 { "scif3", NULL, "sh-sci.9" },
 107                 { "scif4", NULL, "sh-sci.10" },
 108                 { "scif5", NULL, "sh-sci.11" },
 109                 { "scifa3", NULL, "sh-sci.12" },
 110                 { "scifa4", NULL, "sh-sci.13" },
 111                 { "scifa5", NULL, "sh-sci.14" },
 112                 { "du0", "du.0", "rcar-du-r8a7791" },
 113                 { "du1", "du.1", "rcar-du-r8a7791" },
 114                 { "lvds0", "lvds.0", "rcar-du-r8a7791" },
 115         };
 116         struct clk *clk;
 117         unsigned int i;
 118
 119         for (i = 0; i < ARRAY_SIZE(clk_names); ++i) {
 120                 clk = clk_get(NULL, clk_names[i].clk);
 121                 if (!IS_ERR(clk)) {
 122                         clk_register_clkdev(clk, clk_names[i].con_id,
 123                                             clk_names[i].dev_id);
 124                         clk_put(clk);
 125                 }
 126         }
 127
 128         r8a7791_add_dt_devices();
 129         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 130
 131         koelsch_add_du_device();
 132 }
 133
 134 static const char * const koelsch_boards_compat_dt[] __initconst = {
 135         "renesas,koelsch",
 136         "renesas,koelsch-reference",
 137         NULL,
 138 };
 139
 140 DT_MACHINE_START(KOELSCH_DT, "koelsch")
 141         .smp            = smp_ops(r8a7791_smp_ops),
 142         .init_early     = r8a7791_init_early,
 143         .init_time      = rcar_gen2_timer_init,
 144         .init_machine   = koelsch_add_standard_devices,
 145         .init_late      = shmobile_init_late,
 146         .dt_compat      = koelsch_boards_compat_dt,
 147 MACHINE_END