2 * Copyright (C) 2012 Samsung Electronics
4 * Author: InKi Dae <inki.dae@samsung.com>
5 * Author: Donghwa Lee <dh09.lee@samsung.com>
7 * SPDX-License-Identifier: GPL-2.0+
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-generic/errno.h>
24 #include "exynos_fb.h"
26 DECLARE_GLOBAL_DATA_PTR;
28 static unsigned int panel_width, panel_height;
30 #ifdef CONFIG_OF_CONTROL
31 vidinfo_t panel_info = {
33 * Insert a value here so that we don't end up in the BSS
34 * Reference: drivers/video/tegra.c
40 static void exynos_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
42 unsigned long palette_size;
45 fb_size = vid->vl_row * vid->vl_col * (NBITS(vid->vl_bpix) >> 3);
47 palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
49 exynos_fimd_lcd_init_mem((unsigned long)lcdbase,
50 (unsigned long)fb_size, palette_size);
53 static void exynos_lcd_init(vidinfo_t *vid)
55 exynos_fimd_lcd_init(vid);
57 /* Enable flushing after LCD writes if requested */
58 lcd_set_flush_dcache(1);
61 __weak void exynos_cfg_lcd_gpio(void)
65 __weak void exynos_backlight_on(unsigned int onoff)
69 __weak void exynos_reset_lcd(void)
73 __weak void exynos_lcd_power_on(void)
77 __weak void exynos_cfg_ldo(void)
81 __weak void exynos_enable_ldo(unsigned int onoff)
85 __weak void exynos_backlight_reset(void)
89 __weak int exynos_lcd_misc_init(vidinfo_t *vid)
94 static void lcd_panel_on(vidinfo_t *vid)
96 udelay(vid->init_delay);
98 exynos_backlight_reset();
100 exynos_cfg_lcd_gpio();
102 exynos_lcd_power_on();
104 udelay(vid->power_on_delay);
111 udelay(vid->reset_delay);
113 exynos_backlight_on(1);
117 exynos_enable_ldo(1);
119 if (vid->mipi_enabled)
120 exynos_mipi_dsi_init();
123 #ifdef CONFIG_OF_CONTROL
124 int exynos_lcd_early_init(const void *blob)
127 node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD);
129 debug("exynos_fb: Can't get device node for fimd\n");
133 panel_info.vl_col = fdtdec_get_int(blob, node, "samsung,vl-col", 0);
134 if (panel_info.vl_col == 0) {
135 debug("Can't get XRES\n");
139 panel_info.vl_row = fdtdec_get_int(blob, node, "samsung,vl-row", 0);
140 if (panel_info.vl_row == 0) {
141 debug("Can't get YRES\n");
145 panel_info.vl_width = fdtdec_get_int(blob, node,
146 "samsung,vl-width", 0);
148 panel_info.vl_height = fdtdec_get_int(blob, node,
149 "samsung,vl-height", 0);
151 panel_info.vl_freq = fdtdec_get_int(blob, node, "samsung,vl-freq", 0);
152 if (panel_info.vl_freq == 0) {
153 debug("Can't get refresh rate\n");
157 if (fdtdec_get_bool(blob, node, "samsung,vl-clkp"))
158 panel_info.vl_clkp = CONFIG_SYS_LOW;
160 if (fdtdec_get_bool(blob, node, "samsung,vl-oep"))
161 panel_info.vl_oep = CONFIG_SYS_LOW;
163 if (fdtdec_get_bool(blob, node, "samsung,vl-hsp"))
164 panel_info.vl_hsp = CONFIG_SYS_LOW;
166 if (fdtdec_get_bool(blob, node, "samsung,vl-vsp"))
167 panel_info.vl_vsp = CONFIG_SYS_LOW;
169 if (fdtdec_get_bool(blob, node, "samsung,vl-dp"))
170 panel_info.vl_dp = CONFIG_SYS_LOW;
172 panel_info.vl_bpix = fdtdec_get_int(blob, node, "samsung,vl-bpix", 0);
173 if (panel_info.vl_bpix == 0) {
174 debug("Can't get bits per pixel\n");
178 panel_info.vl_hspw = fdtdec_get_int(blob, node, "samsung,vl-hspw", 0);
179 if (panel_info.vl_hspw == 0) {
180 debug("Can't get hsync width\n");
184 panel_info.vl_hfpd = fdtdec_get_int(blob, node, "samsung,vl-hfpd", 0);
185 if (panel_info.vl_hfpd == 0) {
186 debug("Can't get right margin\n");
190 panel_info.vl_hbpd = (u_char)fdtdec_get_int(blob, node,
191 "samsung,vl-hbpd", 0);
192 if (panel_info.vl_hbpd == 0) {
193 debug("Can't get left margin\n");
197 panel_info.vl_vspw = (u_char)fdtdec_get_int(blob, node,
198 "samsung,vl-vspw", 0);
199 if (panel_info.vl_vspw == 0) {
200 debug("Can't get vsync width\n");
204 panel_info.vl_vfpd = fdtdec_get_int(blob, node,
205 "samsung,vl-vfpd", 0);
206 if (panel_info.vl_vfpd == 0) {
207 debug("Can't get lower margin\n");
211 panel_info.vl_vbpd = fdtdec_get_int(blob, node, "samsung,vl-vbpd", 0);
212 if (panel_info.vl_vbpd == 0) {
213 debug("Can't get upper margin\n");
217 panel_info.vl_cmd_allow_len = fdtdec_get_int(blob, node,
218 "samsung,vl-cmd-allow-len", 0);
220 panel_info.win_id = fdtdec_get_int(blob, node, "samsung,winid", 0);
221 panel_info.init_delay = fdtdec_get_int(blob, node,
222 "samsung,init-delay", 0);
223 panel_info.power_on_delay = fdtdec_get_int(blob, node,
224 "samsung,power-on-delay", 0);
225 panel_info.reset_delay = fdtdec_get_int(blob, node,
226 "samsung,reset-delay", 0);
227 panel_info.interface_mode = fdtdec_get_int(blob, node,
228 "samsung,interface-mode", 0);
229 panel_info.mipi_enabled = fdtdec_get_int(blob, node,
230 "samsung,mipi-enabled", 0);
231 panel_info.dp_enabled = fdtdec_get_int(blob, node,
232 "samsung,dp-enabled", 0);
233 panel_info.cs_setup = fdtdec_get_int(blob, node,
234 "samsung,cs-setup", 0);
235 panel_info.wr_setup = fdtdec_get_int(blob, node,
236 "samsung,wr-setup", 0);
237 panel_info.wr_act = fdtdec_get_int(blob, node, "samsung,wr-act", 0);
238 panel_info.wr_hold = fdtdec_get_int(blob, node, "samsung,wr-hold", 0);
240 panel_info.logo_on = fdtdec_get_int(blob, node, "samsung,logo-on", 0);
241 if (panel_info.logo_on) {
242 panel_info.logo_width = fdtdec_get_int(blob, node,
243 "samsung,logo-width", 0);
244 panel_info.logo_height = fdtdec_get_int(blob, node,
245 "samsung,logo-height", 0);
246 panel_info.logo_addr = fdtdec_get_int(blob, node,
247 "samsung,logo-addr", 0);
250 panel_info.rgb_mode = fdtdec_get_int(blob, node,
251 "samsung,rgb-mode", 0);
252 panel_info.pclk_name = fdtdec_get_int(blob, node,
253 "samsung,pclk-name", 0);
254 panel_info.sclk_div = fdtdec_get_int(blob, node,
255 "samsung,sclk-div", 0);
256 panel_info.dual_lcd_enabled = fdtdec_get_int(blob, node,
257 "samsung,dual-lcd-enabled", 0);
263 void lcd_ctrl_init(void *lcdbase)
265 set_system_display_ctrl();
268 #ifdef CONFIG_OF_CONTROL
269 #ifdef CONFIG_EXYNOS_MIPI_DSIM
270 exynos_init_dsim_platform_data(&panel_info);
272 exynos_lcd_misc_init(&panel_info);
274 /* initialize parameters which is specific to panel. */
275 init_panel_info(&panel_info);
278 panel_width = panel_info.vl_width;
279 panel_height = panel_info.vl_height;
281 exynos_lcd_init_mem(lcdbase, &panel_info);
283 exynos_lcd_init(&panel_info);
286 void lcd_enable(void)
288 if (panel_info.logo_on) {
289 memset((void *) gd->fb_base, 0, panel_width * panel_height *
290 (NBITS(panel_info.vl_bpix) >> 3));
293 lcd_panel_on(&panel_info);
297 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)