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;
31 * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs
32 * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix to reserve
33 * FB memory at a very early stage, i.e even before exynos_fimd_parse_dt()
34 * is called. So, we are forced to statically assign it.
36 #ifdef CONFIG_OF_CONTROL
37 vidinfo_t panel_info = {
40 .vl_bpix = LCD_COLOR16,
44 static void exynos_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
46 unsigned long palette_size;
49 fb_size = vid->vl_row * vid->vl_col * (NBITS(vid->vl_bpix) >> 3);
51 palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
53 exynos_fimd_lcd_init_mem((unsigned long)lcdbase,
54 (unsigned long)fb_size, palette_size);
57 static void exynos_lcd_init(vidinfo_t *vid)
59 exynos_fimd_lcd_init(vid);
61 /* Enable flushing after LCD writes if requested */
62 lcd_set_flush_dcache(1);
65 void __exynos_cfg_lcd_gpio(void)
68 void exynos_cfg_lcd_gpio(void)
69 __attribute__((weak, alias("__exynos_cfg_lcd_gpio")));
71 void __exynos_backlight_on(unsigned int onoff)
74 void exynos_backlight_on(unsigned int onoff)
75 __attribute__((weak, alias("__exynos_cfg_lcd_gpio")));
77 void __exynos_reset_lcd(void)
80 void exynos_reset_lcd(void)
81 __attribute__((weak, alias("__exynos_reset_lcd")));
83 void __exynos_lcd_power_on(void)
86 void exynos_lcd_power_on(void)
87 __attribute__((weak, alias("__exynos_lcd_power_on")));
89 void __exynos_cfg_ldo(void)
92 void exynos_cfg_ldo(void)
93 __attribute__((weak, alias("__exynos_cfg_ldo")));
95 void __exynos_enable_ldo(unsigned int onoff)
98 void exynos_enable_ldo(unsigned int onoff)
99 __attribute__((weak, alias("__exynos_enable_ldo")));
101 void __exynos_backlight_reset(void)
104 void exynos_backlight_reset(void)
105 __attribute__((weak, alias("__exynos_backlight_reset")));
107 int __exynos_lcd_misc_init(vidinfo_t *vid)
111 int exynos_lcd_misc_init(vidinfo_t *vid)
112 __attribute__((weak, alias("__exynos_lcd_misc_init")));
114 static void lcd_panel_on(vidinfo_t *vid)
116 udelay(vid->init_delay);
118 exynos_backlight_reset();
120 exynos_cfg_lcd_gpio();
122 exynos_lcd_power_on();
124 udelay(vid->power_on_delay);
131 udelay(vid->reset_delay);
133 exynos_backlight_on(1);
137 exynos_enable_ldo(1);
139 if (vid->mipi_enabled)
140 exynos_mipi_dsi_init();
143 #ifdef CONFIG_OF_CONTROL
144 int exynos_fimd_parse_dt(const void *blob)
147 node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD);
149 debug("exynos_fb: Can't get device node for fimd\n");
153 panel_info.vl_col = fdtdec_get_int(blob, node, "samsung,vl-col", 0);
154 if (panel_info.vl_col == 0) {
155 debug("Can't get XRES\n");
159 panel_info.vl_row = fdtdec_get_int(blob, node, "samsung,vl-row", 0);
160 if (panel_info.vl_row == 0) {
161 debug("Can't get YRES\n");
165 panel_info.vl_width = fdtdec_get_int(blob, node,
166 "samsung,vl-width", 0);
168 panel_info.vl_height = fdtdec_get_int(blob, node,
169 "samsung,vl-height", 0);
171 panel_info.vl_freq = fdtdec_get_int(blob, node, "samsung,vl-freq", 0);
172 if (panel_info.vl_freq == 0) {
173 debug("Can't get refresh rate\n");
177 if (fdtdec_get_bool(blob, node, "samsung,vl-clkp"))
178 panel_info.vl_clkp = CONFIG_SYS_LOW;
180 if (fdtdec_get_bool(blob, node, "samsung,vl-oep"))
181 panel_info.vl_oep = CONFIG_SYS_LOW;
183 if (fdtdec_get_bool(blob, node, "samsung,vl-hsp"))
184 panel_info.vl_hsp = CONFIG_SYS_LOW;
186 if (fdtdec_get_bool(blob, node, "samsung,vl-vsp"))
187 panel_info.vl_vsp = CONFIG_SYS_LOW;
189 if (fdtdec_get_bool(blob, node, "samsung,vl-dp"))
190 panel_info.vl_dp = CONFIG_SYS_LOW;
192 panel_info.vl_bpix = fdtdec_get_int(blob, node, "samsung,vl-bpix", 0);
193 if (panel_info.vl_bpix == 0) {
194 debug("Can't get bits per pixel\n");
198 panel_info.vl_hspw = fdtdec_get_int(blob, node, "samsung,vl-hspw", 0);
199 if (panel_info.vl_hspw == 0) {
200 debug("Can't get hsync width\n");
204 panel_info.vl_hfpd = fdtdec_get_int(blob, node, "samsung,vl-hfpd", 0);
205 if (panel_info.vl_hfpd == 0) {
206 debug("Can't get right margin\n");
210 panel_info.vl_hbpd = (u_char)fdtdec_get_int(blob, node,
211 "samsung,vl-hbpd", 0);
212 if (panel_info.vl_hbpd == 0) {
213 debug("Can't get left margin\n");
217 panel_info.vl_vspw = (u_char)fdtdec_get_int(blob, node,
218 "samsung,vl-vspw", 0);
219 if (panel_info.vl_vspw == 0) {
220 debug("Can't get vsync width\n");
224 panel_info.vl_vfpd = fdtdec_get_int(blob, node,
225 "samsung,vl-vfpd", 0);
226 if (panel_info.vl_vfpd == 0) {
227 debug("Can't get lower margin\n");
231 panel_info.vl_vbpd = fdtdec_get_int(blob, node, "samsung,vl-vbpd", 0);
232 if (panel_info.vl_vbpd == 0) {
233 debug("Can't get upper margin\n");
237 panel_info.vl_cmd_allow_len = fdtdec_get_int(blob, node,
238 "samsung,vl-cmd-allow-len", 0);
240 panel_info.win_id = fdtdec_get_int(blob, node, "samsung,winid", 0);
241 panel_info.init_delay = fdtdec_get_int(blob, node,
242 "samsung,init-delay", 0);
243 panel_info.power_on_delay = fdtdec_get_int(blob, node,
244 "samsung,power-on-delay", 0);
245 panel_info.reset_delay = fdtdec_get_int(blob, node,
246 "samsung,reset-delay", 0);
247 panel_info.interface_mode = fdtdec_get_int(blob, node,
248 "samsung,interface-mode", 0);
249 panel_info.mipi_enabled = fdtdec_get_int(blob, node,
250 "samsung,mipi-enabled", 0);
251 panel_info.dp_enabled = fdtdec_get_int(blob, node,
252 "samsung,dp-enabled", 0);
253 panel_info.cs_setup = fdtdec_get_int(blob, node,
254 "samsung,cs-setup", 0);
255 panel_info.wr_setup = fdtdec_get_int(blob, node,
256 "samsung,wr-setup", 0);
257 panel_info.wr_act = fdtdec_get_int(blob, node, "samsung,wr-act", 0);
258 panel_info.wr_hold = fdtdec_get_int(blob, node, "samsung,wr-hold", 0);
260 panel_info.logo_on = fdtdec_get_int(blob, node, "samsung,logo-on", 0);
261 if (panel_info.logo_on) {
262 panel_info.logo_width = fdtdec_get_int(blob, node,
263 "samsung,logo-width", 0);
264 panel_info.logo_height = fdtdec_get_int(blob, node,
265 "samsung,logo-height", 0);
266 panel_info.logo_addr = fdtdec_get_int(blob, node,
267 "samsung,logo-addr", 0);
270 panel_info.rgb_mode = fdtdec_get_int(blob, node,
271 "samsung,rgb-mode", 0);
272 panel_info.pclk_name = fdtdec_get_int(blob, node,
273 "samsung,pclk-name", 0);
274 panel_info.sclk_div = fdtdec_get_int(blob, node,
275 "samsung,sclk-div", 0);
276 panel_info.dual_lcd_enabled = fdtdec_get_int(blob, node,
277 "samsung,dual-lcd-enabled", 0);
283 void lcd_ctrl_init(void *lcdbase)
285 set_system_display_ctrl();
288 #ifdef CONFIG_OF_CONTROL
289 if (exynos_fimd_parse_dt(gd->fdt_blob))
290 debug("Can't get proper panel info\n");
291 #ifdef CONFIG_EXYNOS_MIPI_DSIM
292 exynos_init_dsim_platform_data(&panel_info);
294 exynos_lcd_misc_init(&panel_info);
296 /* initialize parameters which is specific to panel. */
297 init_panel_info(&panel_info);
300 panel_width = panel_info.vl_width;
301 panel_height = panel_info.vl_height;
303 exynos_lcd_init_mem(lcdbase, &panel_info);
305 exynos_lcd_init(&panel_info);
308 void lcd_enable(void)
310 if (panel_info.logo_on) {
311 memset((void *) gd->fb_base, 0, panel_width * panel_height *
312 (NBITS(panel_info.vl_bpix) >> 3));
315 lcd_panel_on(&panel_info);
319 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)