drivers/video/exynos/exynos_fb.c

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  *
   4  * Author: InKi Dae <inki.dae@samsung.com>
   5  * Author: Donghwa Lee <dh09.lee@samsung.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <config.h>
  11 #include <common.h>
  12 #include <lcd.h>
  13 #include <fdtdec.h>
  14 #include <libfdt.h>
  15 #include <asm/io.h>
  16 #include <asm/arch/cpu.h>
  17 #include <asm/arch/clock.h>
  18 #include <asm/arch/clk.h>
  19 #include <asm/arch/mipi_dsim.h>
  20 #include <asm/arch/dp_info.h>
  21 #include <asm/arch/system.h>
  22 #include <asm/gpio.h>
  23 #include <asm-generic/errno.h>
  24
  25 #include "exynos_fb.h"
  26
  27 DECLARE_GLOBAL_DATA_PTR;
  28
  29 struct vidinfo panel_info  = {
  30         /*
  31          * Insert a value here so that we don't end up in the BSS
  32          * Reference: drivers/video/tegra.c
  33          */
  34         .vl_col = -1,
  35 };
  36
  37 ushort *configuration_get_cmap(void)
  38 {
  39 #if defined(CONFIG_LCD_LOGO)
  40         return bmp_logo_palette;
  41 #else
  42         return NULL;
  43 #endif
  44 }
  45
  46 static void exynos_lcd_init(struct vidinfo *vid, ulong lcd_base)
  47 {
  48         exynos_fimd_lcd_init(vid, lcd_base);
  49
  50         /* Enable flushing after LCD writes if requested */
  51         lcd_set_flush_dcache(1);
  52 }
  53
  54 __weak void exynos_cfg_lcd_gpio(void)
  55 {
  56 }
  57
  58 __weak void exynos_backlight_on(unsigned int onoff)
  59 {
  60 }
  61
  62 __weak void exynos_reset_lcd(void)
  63 {
  64 }
  65
  66 __weak void exynos_lcd_power_on(void)
  67 {
  68 }
  69
  70 __weak void exynos_cfg_ldo(void)
  71 {
  72 }
  73
  74 __weak void exynos_enable_ldo(unsigned int onoff)
  75 {
  76 }
  77
  78 __weak void exynos_backlight_reset(void)
  79 {
  80 }
  81
  82 __weak int exynos_lcd_misc_init(struct vidinfo *vid)
  83 {
  84         return 0;
  85 }
  86
  87 static void lcd_panel_on(struct vidinfo *vid)
  88 {
  89         struct gpio_desc pwm_out_gpio;
  90         struct gpio_desc bl_en_gpio;
  91         unsigned int node;
  92
  93         udelay(vid->init_delay);
  94
  95         exynos_backlight_reset();
  96
  97         exynos_cfg_lcd_gpio();
  98
  99         exynos_lcd_power_on();
 100
 101         udelay(vid->power_on_delay);
 102
 103         if (vid->dp_enabled)
 104                 exynos_init_dp();
 105
 106         exynos_reset_lcd();
 107
 108         udelay(vid->reset_delay);
 109
 110         exynos_backlight_on(1);
 111
 112         node = fdtdec_next_compatible(gd->fdt_blob, 0,
 113                                                 COMPAT_SAMSUNG_EXYNOS_FIMD);
 114         if (node <= 0) {
 115                 debug("FIMD: Can't get device node for FIMD\n");
 116                 return;
 117         }
 118         gpio_request_by_name_nodev(gd->fdt_blob, node, "samsung,pwm-out-gpio",
 119                                    0, &pwm_out_gpio,
 120                                    GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 121
 122         gpio_request_by_name_nodev(gd->fdt_blob, node, "samsung,bl-en-gpio", 0,
 123                                    &bl_en_gpio,
 124                                    GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 125
 126         exynos_cfg_ldo();
 127
 128         exynos_enable_ldo(1);
 129
 130         if (vid->mipi_enabled)
 131                 exynos_mipi_dsi_init(panel_info.dsim_platform_data_dt);
 132 }
 133
 134 int exynos_lcd_early_init(const void *blob)
 135 {
 136         unsigned int node;
 137         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD);
 138         if (node <= 0) {
 139                 debug("exynos_fb: Can't get device node for fimd\n");
 140                 return -ENODEV;
 141         }
 142
 143         panel_info.vl_col = fdtdec_get_int(blob, node, "samsung,vl-col", 0);
 144         if (panel_info.vl_col == 0) {
 145                 debug("Can't get XRES\n");
 146                 return -ENXIO;
 147         }
 148
 149         panel_info.vl_row = fdtdec_get_int(blob, node, "samsung,vl-row", 0);
 150         if (panel_info.vl_row == 0) {
 151                 debug("Can't get YRES\n");
 152                 return -ENXIO;
 153         }
 154
 155         panel_info.vl_width = fdtdec_get_int(blob, node,
 156                                                 "samsung,vl-width", 0);
 157
 158         panel_info.vl_height = fdtdec_get_int(blob, node,
 159                                                 "samsung,vl-height", 0);
 160
 161         panel_info.vl_freq = fdtdec_get_int(blob, node, "samsung,vl-freq", 0);
 162         if (panel_info.vl_freq == 0) {
 163                 debug("Can't get refresh rate\n");
 164                 return -ENXIO;
 165         }
 166
 167         if (fdtdec_get_bool(blob, node, "samsung,vl-clkp"))
 168                 panel_info.vl_clkp = CONFIG_SYS_LOW;
 169
 170         if (fdtdec_get_bool(blob, node, "samsung,vl-oep"))
 171                 panel_info.vl_oep = CONFIG_SYS_LOW;
 172
 173         if (fdtdec_get_bool(blob, node, "samsung,vl-hsp"))
 174                 panel_info.vl_hsp = CONFIG_SYS_LOW;
 175
 176         if (fdtdec_get_bool(blob, node, "samsung,vl-vsp"))
 177                 panel_info.vl_vsp = CONFIG_SYS_LOW;
 178
 179         if (fdtdec_get_bool(blob, node, "samsung,vl-dp"))
 180                 panel_info.vl_dp = CONFIG_SYS_LOW;
 181
 182         panel_info.vl_bpix = fdtdec_get_int(blob, node, "samsung,vl-bpix", 0);
 183         if (panel_info.vl_bpix == 0) {
 184                 debug("Can't get bits per pixel\n");
 185                 return -ENXIO;
 186         }
 187
 188         panel_info.vl_hspw = fdtdec_get_int(blob, node, "samsung,vl-hspw", 0);
 189         if (panel_info.vl_hspw == 0) {
 190                 debug("Can't get hsync width\n");
 191                 return -ENXIO;
 192         }
 193
 194         panel_info.vl_hfpd = fdtdec_get_int(blob, node, "samsung,vl-hfpd", 0);
 195         if (panel_info.vl_hfpd == 0) {
 196                 debug("Can't get right margin\n");
 197                 return -ENXIO;
 198         }
 199
 200         panel_info.vl_hbpd = (u_char)fdtdec_get_int(blob, node,
 201                                                         "samsung,vl-hbpd", 0);
 202         if (panel_info.vl_hbpd == 0) {
 203                 debug("Can't get left margin\n");
 204                 return -ENXIO;
 205         }
 206
 207         panel_info.vl_vspw = (u_char)fdtdec_get_int(blob, node,
 208                                                         "samsung,vl-vspw", 0);
 209         if (panel_info.vl_vspw == 0) {
 210                 debug("Can't get vsync width\n");
 211                 return -ENXIO;
 212         }
 213
 214         panel_info.vl_vfpd = fdtdec_get_int(blob, node,
 215                                                         "samsung,vl-vfpd", 0);
 216         if (panel_info.vl_vfpd == 0) {
 217                 debug("Can't get lower margin\n");
 218                 return -ENXIO;
 219         }
 220
 221         panel_info.vl_vbpd = fdtdec_get_int(blob, node, "samsung,vl-vbpd", 0);
 222         if (panel_info.vl_vbpd == 0) {
 223                 debug("Can't get upper margin\n");
 224                 return -ENXIO;
 225         }
 226
 227         panel_info.vl_cmd_allow_len = fdtdec_get_int(blob, node,
 228                                                 "samsung,vl-cmd-allow-len", 0);
 229
 230         panel_info.win_id = fdtdec_get_int(blob, node, "samsung,winid", 0);
 231         panel_info.init_delay = fdtdec_get_int(blob, node,
 232                                                 "samsung,init-delay", 0);
 233         panel_info.power_on_delay = fdtdec_get_int(blob, node,
 234                                                 "samsung,power-on-delay", 0);
 235         panel_info.reset_delay = fdtdec_get_int(blob, node,
 236                                                 "samsung,reset-delay", 0);
 237         panel_info.interface_mode = fdtdec_get_int(blob, node,
 238                                                 "samsung,interface-mode", 0);
 239         panel_info.mipi_enabled = fdtdec_get_int(blob, node,
 240                                                 "samsung,mipi-enabled", 0);
 241         panel_info.dp_enabled = fdtdec_get_int(blob, node,
 242                                                 "samsung,dp-enabled", 0);
 243         panel_info.cs_setup = fdtdec_get_int(blob, node,
 244                                                 "samsung,cs-setup", 0);
 245         panel_info.wr_setup = fdtdec_get_int(blob, node,
 246                                                 "samsung,wr-setup", 0);
 247         panel_info.wr_act = fdtdec_get_int(blob, node, "samsung,wr-act", 0);
 248         panel_info.wr_hold = fdtdec_get_int(blob, node, "samsung,wr-hold", 0);
 249
 250         panel_info.logo_on = fdtdec_get_int(blob, node, "samsung,logo-on", 0);
 251         if (panel_info.logo_on) {
 252                 panel_info.logo_width = fdtdec_get_int(blob, node,
 253                                                 "samsung,logo-width", 0);
 254                 panel_info.logo_height = fdtdec_get_int(blob, node,
 255                                                 "samsung,logo-height", 0);
 256                 panel_info.logo_addr = fdtdec_get_int(blob, node,
 257                                                 "samsung,logo-addr", 0);
 258         }
 259
 260         panel_info.rgb_mode = fdtdec_get_int(blob, node,
 261                                                 "samsung,rgb-mode", 0);
 262         panel_info.pclk_name = fdtdec_get_int(blob, node,
 263                                                 "samsung,pclk-name", 0);
 264         panel_info.sclk_div = fdtdec_get_int(blob, node,
 265                                                 "samsung,sclk-div", 0);
 266         panel_info.dual_lcd_enabled = fdtdec_get_int(blob, node,
 267                                                 "samsung,dual-lcd-enabled", 0);
 268
 269         return 0;
 270 }
 271
 272 void lcd_ctrl_init(void *lcdbase)
 273 {
 274         set_system_display_ctrl();
 275         set_lcd_clk();
 276
 277 #ifdef CONFIG_EXYNOS_MIPI_DSIM
 278         exynos_init_dsim_platform_data(&panel_info);
 279 #endif
 280         exynos_lcd_misc_init(&panel_info);
 281
 282         exynos_lcd_init(&panel_info, (ulong)lcdbase);
 283 }
 284
 285 void lcd_enable(void)
 286 {
 287         if (panel_info.logo_on) {
 288                 memset((void *)gd->fb_base, 0,
 289                        panel_info.vl_width * panel_info.vl_height *
 290                                 (NBITS(panel_info.vl_bpix) >> 3));
 291         }
 292
 293         lcd_panel_on(&panel_info);
 294 }
 295
 296 /* dummy function */
 297 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
 298 {
 299         return;
 300 }