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 static unsigned int panel_width, panel_height;
  30
  31 struct vidinfo panel_info  = {
  32         /*
  33          * Insert a value here so that we don't end up in the BSS
  34          * Reference: drivers/video/tegra.c
  35          */
  36         .vl_col = -1,
  37 };
  38
  39 ushort *configuration_get_cmap(void)
  40 {
  41 #if defined(CONFIG_LCD_LOGO)
  42         return bmp_logo_palette;
  43 #else
  44         return NULL;
  45 #endif
  46 }
  47
  48 static void exynos_lcd_init(struct vidinfo *vid, ulong lcd_base)
  49 {
  50         exynos_fimd_lcd_init(vid, lcd_base);
  51
  52         /* Enable flushing after LCD writes if requested */
  53         lcd_set_flush_dcache(1);
  54 }
  55
  56 __weak void exynos_cfg_lcd_gpio(void)
  57 {
  58 }
  59
  60 __weak void exynos_backlight_on(unsigned int onoff)
  61 {
  62 }
  63
  64 __weak void exynos_reset_lcd(void)
  65 {
  66 }
  67
  68 __weak void exynos_lcd_power_on(void)
  69 {
  70 }
  71
  72 __weak void exynos_cfg_ldo(void)
  73 {
  74 }
  75
  76 __weak void exynos_enable_ldo(unsigned int onoff)
  77 {
  78 }
  79
  80 __weak void exynos_backlight_reset(void)
  81 {
  82 }
  83
  84 __weak int exynos_lcd_misc_init(struct vidinfo *vid)
  85 {
  86         return 0;
  87 }
  88
  89 static void lcd_panel_on(struct vidinfo *vid)
  90 {
  91         struct gpio_desc pwm_out_gpio;
  92         struct gpio_desc bl_en_gpio;
  93         unsigned int node;
  94
  95         udelay(vid->init_delay);
  96
  97         exynos_backlight_reset();
  98
  99         exynos_cfg_lcd_gpio();
 100
 101         exynos_lcd_power_on();
 102
 103         udelay(vid->power_on_delay);
 104
 105         if (vid->dp_enabled)
 106                 exynos_init_dp();
 107
 108         exynos_reset_lcd();
 109
 110         udelay(vid->reset_delay);
 111
 112         exynos_backlight_on(1);
 113
 114         node = fdtdec_next_compatible(gd->fdt_blob, 0,
 115                                                 COMPAT_SAMSUNG_EXYNOS_FIMD);
 116         if (node <= 0) {
 117                 debug("FIMD: Can't get device node for FIMD\n");
 118                 return;
 119         }
 120         gpio_request_by_name_nodev(gd->fdt_blob, node, "samsung,pwm-out-gpio",
 121                                    0, &pwm_out_gpio,
 122                                    GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 123
 124         gpio_request_by_name_nodev(gd->fdt_blob, node, "samsung,bl-en-gpio", 0,
 125                                    &bl_en_gpio,
 126                                    GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 127
 128         exynos_cfg_ldo();
 129
 130         exynos_enable_ldo(1);
 131
 132         if (vid->mipi_enabled)
 133                 exynos_mipi_dsi_init();
 134 }
 135
 136 int exynos_lcd_early_init(const void *blob)
 137 {
 138         unsigned int node;
 139         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD);
 140         if (node <= 0) {
 141                 debug("exynos_fb: Can't get device node for fimd\n");
 142                 return -ENODEV;
 143         }
 144
 145         panel_info.vl_col = fdtdec_get_int(blob, node, "samsung,vl-col", 0);
 146         if (panel_info.vl_col == 0) {
 147                 debug("Can't get XRES\n");
 148                 return -ENXIO;
 149         }
 150
 151         panel_info.vl_row = fdtdec_get_int(blob, node, "samsung,vl-row", 0);
 152         if (panel_info.vl_row == 0) {
 153                 debug("Can't get YRES\n");
 154                 return -ENXIO;
 155         }
 156
 157         panel_info.vl_width = fdtdec_get_int(blob, node,
 158                                                 "samsung,vl-width", 0);
 159
 160         panel_info.vl_height = fdtdec_get_int(blob, node,
 161                                                 "samsung,vl-height", 0);
 162
 163         panel_info.vl_freq = fdtdec_get_int(blob, node, "samsung,vl-freq", 0);
 164         if (panel_info.vl_freq == 0) {
 165                 debug("Can't get refresh rate\n");
 166                 return -ENXIO;
 167         }
 168
 169         if (fdtdec_get_bool(blob, node, "samsung,vl-clkp"))
 170                 panel_info.vl_clkp = CONFIG_SYS_LOW;
 171
 172         if (fdtdec_get_bool(blob, node, "samsung,vl-oep"))
 173                 panel_info.vl_oep = CONFIG_SYS_LOW;
 174
 175         if (fdtdec_get_bool(blob, node, "samsung,vl-hsp"))
 176                 panel_info.vl_hsp = CONFIG_SYS_LOW;
 177
 178         if (fdtdec_get_bool(blob, node, "samsung,vl-vsp"))
 179                 panel_info.vl_vsp = CONFIG_SYS_LOW;
 180
 181         if (fdtdec_get_bool(blob, node, "samsung,vl-dp"))
 182                 panel_info.vl_dp = CONFIG_SYS_LOW;
 183
 184         panel_info.vl_bpix = fdtdec_get_int(blob, node, "samsung,vl-bpix", 0);
 185         if (panel_info.vl_bpix == 0) {
 186                 debug("Can't get bits per pixel\n");
 187                 return -ENXIO;
 188         }
 189
 190         panel_info.vl_hspw = fdtdec_get_int(blob, node, "samsung,vl-hspw", 0);
 191         if (panel_info.vl_hspw == 0) {
 192                 debug("Can't get hsync width\n");
 193                 return -ENXIO;
 194         }
 195
 196         panel_info.vl_hfpd = fdtdec_get_int(blob, node, "samsung,vl-hfpd", 0);
 197         if (panel_info.vl_hfpd == 0) {
 198                 debug("Can't get right margin\n");
 199                 return -ENXIO;
 200         }
 201
 202         panel_info.vl_hbpd = (u_char)fdtdec_get_int(blob, node,
 203                                                         "samsung,vl-hbpd", 0);
 204         if (panel_info.vl_hbpd == 0) {
 205                 debug("Can't get left margin\n");
 206                 return -ENXIO;
 207         }
 208
 209         panel_info.vl_vspw = (u_char)fdtdec_get_int(blob, node,
 210                                                         "samsung,vl-vspw", 0);
 211         if (panel_info.vl_vspw == 0) {
 212                 debug("Can't get vsync width\n");
 213                 return -ENXIO;
 214         }
 215
 216         panel_info.vl_vfpd = fdtdec_get_int(blob, node,
 217                                                         "samsung,vl-vfpd", 0);
 218         if (panel_info.vl_vfpd == 0) {
 219                 debug("Can't get lower margin\n");
 220                 return -ENXIO;
 221         }
 222
 223         panel_info.vl_vbpd = fdtdec_get_int(blob, node, "samsung,vl-vbpd", 0);
 224         if (panel_info.vl_vbpd == 0) {
 225                 debug("Can't get upper margin\n");
 226                 return -ENXIO;
 227         }
 228
 229         panel_info.vl_cmd_allow_len = fdtdec_get_int(blob, node,
 230                                                 "samsung,vl-cmd-allow-len", 0);
 231
 232         panel_info.win_id = fdtdec_get_int(blob, node, "samsung,winid", 0);
 233         panel_info.init_delay = fdtdec_get_int(blob, node,
 234                                                 "samsung,init-delay", 0);
 235         panel_info.power_on_delay = fdtdec_get_int(blob, node,
 236                                                 "samsung,power-on-delay", 0);
 237         panel_info.reset_delay = fdtdec_get_int(blob, node,
 238                                                 "samsung,reset-delay", 0);
 239         panel_info.interface_mode = fdtdec_get_int(blob, node,
 240                                                 "samsung,interface-mode", 0);
 241         panel_info.mipi_enabled = fdtdec_get_int(blob, node,
 242                                                 "samsung,mipi-enabled", 0);
 243         panel_info.dp_enabled = fdtdec_get_int(blob, node,
 244                                                 "samsung,dp-enabled", 0);
 245         panel_info.cs_setup = fdtdec_get_int(blob, node,
 246                                                 "samsung,cs-setup", 0);
 247         panel_info.wr_setup = fdtdec_get_int(blob, node,
 248                                                 "samsung,wr-setup", 0);
 249         panel_info.wr_act = fdtdec_get_int(blob, node, "samsung,wr-act", 0);
 250         panel_info.wr_hold = fdtdec_get_int(blob, node, "samsung,wr-hold", 0);
 251
 252         panel_info.logo_on = fdtdec_get_int(blob, node, "samsung,logo-on", 0);
 253         if (panel_info.logo_on) {
 254                 panel_info.logo_width = fdtdec_get_int(blob, node,
 255                                                 "samsung,logo-width", 0);
 256                 panel_info.logo_height = fdtdec_get_int(blob, node,
 257                                                 "samsung,logo-height", 0);
 258                 panel_info.logo_addr = fdtdec_get_int(blob, node,
 259                                                 "samsung,logo-addr", 0);
 260         }
 261
 262         panel_info.rgb_mode = fdtdec_get_int(blob, node,
 263                                                 "samsung,rgb-mode", 0);
 264         panel_info.pclk_name = fdtdec_get_int(blob, node,
 265                                                 "samsung,pclk-name", 0);
 266         panel_info.sclk_div = fdtdec_get_int(blob, node,
 267                                                 "samsung,sclk-div", 0);
 268         panel_info.dual_lcd_enabled = fdtdec_get_int(blob, node,
 269                                                 "samsung,dual-lcd-enabled", 0);
 270
 271         return 0;
 272 }
 273
 274 void lcd_ctrl_init(void *lcdbase)
 275 {
 276         set_system_display_ctrl();
 277         set_lcd_clk();
 278
 279 #ifdef CONFIG_EXYNOS_MIPI_DSIM
 280         exynos_init_dsim_platform_data(&panel_info);
 281 #endif
 282         exynos_lcd_misc_init(&panel_info);
 283
 284         panel_width = panel_info.vl_width;
 285         panel_height = panel_info.vl_height;
 286
 287         exynos_lcd_init(&panel_info, (ulong)lcdbase);
 288 }
 289
 290 void lcd_enable(void)
 291 {
 292         if (panel_info.logo_on) {
 293                 memset((void *) gd->fb_base, 0, panel_width * panel_height *
 294                                 (NBITS(panel_info.vl_bpix) >> 3));
 295         }
 296
 297         lcd_panel_on(&panel_info);
 298 }
 299
 300 /* dummy function */
 301 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
 302 {
 303         return;
 304 }