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

   1 /*
   2  * Lager board support - Reference DT implementation
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Simon Horman
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/clk.h>
  22 #include <linux/clkdev.h>
  23 #include <linux/dma-mapping.h>
  24 #include <linux/init.h>
  25 #include <linux/of_platform.h>
  26 #include <linux/platform_data/rcar-du.h>
  27 #include <mach/common.h>
  28 #include <mach/irqs.h>
  29 #include <mach/rcar-gen2.h>
  30 #include <mach/r8a7790.h>
  31 #include <asm/mach/arch.h>
  32
  33 /* DU */
  34 static struct rcar_du_encoder_data lager_du_encoders[] = {
  35         {
  36                 .type = RCAR_DU_ENCODER_VGA,
  37                 .output = RCAR_DU_OUTPUT_DPAD0,
  38         }, {
  39                 .type = RCAR_DU_ENCODER_NONE,
  40                 .output = RCAR_DU_OUTPUT_LVDS1,
  41                 .connector.lvds.panel = {
  42                         .width_mm = 210,
  43                         .height_mm = 158,
  44                         .mode = {
  45                                 .clock = 65000,
  46                                 .hdisplay = 1024,
  47                                 .hsync_start = 1048,
  48                                 .hsync_end = 1184,
  49                                 .htotal = 1344,
  50                                 .vdisplay = 768,
  51                                 .vsync_start = 771,
  52                                 .vsync_end = 777,
  53                                 .vtotal = 806,
  54                                 .flags = 0,
  55                         },
  56                 },
  57         },
  58 };
  59
  60 static struct rcar_du_platform_data lager_du_pdata = {
  61         .encoders = lager_du_encoders,
  62         .num_encoders = ARRAY_SIZE(lager_du_encoders),
  63 };
  64
  65 static const struct resource du_resources[] __initconst = {
  66         DEFINE_RES_MEM(0xfeb00000, 0x70000),
  67         DEFINE_RES_MEM_NAMED(0xfeb90000, 0x1c, "lvds.0"),
  68         DEFINE_RES_MEM_NAMED(0xfeb94000, 0x1c, "lvds.1"),
  69         DEFINE_RES_IRQ(gic_spi(256)),
  70         DEFINE_RES_IRQ(gic_spi(268)),
  71         DEFINE_RES_IRQ(gic_spi(269)),
  72 };
  73
  74 static void __init lager_add_du_device(void)
  75 {
  76         struct platform_device_info info = {
  77                 .name = "rcar-du-r8a7790",
  78                 .id = -1,
  79                 .res = du_resources,
  80                 .num_res = ARRAY_SIZE(du_resources),
  81                 .data = &lager_du_pdata,
  82                 .size_data = sizeof(lager_du_pdata),
  83                 .dma_mask = DMA_BIT_MASK(32),
  84         };
  85
  86         platform_device_register_full(&info);
  87 }
  88
  89 static void __init lager_add_standard_devices(void)
  90 {
  91         /*
  92          * This is a really crude hack to provide clkdev support to platform
  93          * devices until they get moved to DT.
  94          */
  95         static const struct clk_name {
  96                 const char *clk;
  97                 const char *con_id;
  98                 const char *dev_id;
  99         } clk_names[] = {
 100                 { "cmt0", NULL, "sh_cmt.0" },
 101                 { "scifa0", NULL, "sh-sci.0" },
 102                 { "scifa1", NULL, "sh-sci.1" },
 103                 { "scifb0", NULL, "sh-sci.2" },
 104                 { "scifb1", NULL, "sh-sci.3" },
 105                 { "scifb2", NULL, "sh-sci.4" },
 106                 { "scifa2", NULL, "sh-sci.5" },
 107                 { "scif0", NULL, "sh-sci.6" },
 108                 { "scif1", NULL, "sh-sci.7" },
 109                 { "hscif0", NULL, "sh-sci.8" },
 110                 { "hscif1", NULL, "sh-sci.9" },
 111                 { "du0", "du.0", "rcar-du-r8a7790" },
 112                 { "du1", "du.1", "rcar-du-r8a7790" },
 113                 { "du2", "du.2", "rcar-du-r8a7790" },
 114                 { "lvds0", "lvds.0", "rcar-du-r8a7790" },
 115                 { "lvds1", "lvds.1", "rcar-du-r8a7790" },
 116         };
 117         struct clk *clk;
 118         unsigned int i;
 119
 120         for (i = 0; i < ARRAY_SIZE(clk_names); ++i) {
 121                 clk = clk_get(NULL, clk_names[i].clk);
 122                 if (!IS_ERR(clk)) {
 123                         clk_register_clkdev(clk, clk_names[i].con_id,
 124                                             clk_names[i].dev_id);
 125                         clk_put(clk);
 126                 }
 127         }
 128
 129         r8a7790_add_dt_devices();
 130         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 131
 132         lager_add_du_device();
 133 }
 134
 135 static const char *lager_boards_compat_dt[] __initdata = {
 136         "renesas,lager",
 137         "renesas,lager-reference",
 138         NULL,
 139 };
 140
 141 DT_MACHINE_START(LAGER_DT, "lager")
 142         .smp            = smp_ops(r8a7790_smp_ops),
 143         .init_early     = r8a7790_init_early,
 144         .init_time      = rcar_gen2_timer_init,
 145         .init_machine   = lager_add_standard_devices,
 146         .init_late      = shmobile_init_late,
 147         .dt_compat      = lager_boards_compat_dt,
 148 MACHINE_END