2 * S5PC100 and S5PC110 LCD Controller driver.
4 * Author: InKi Dae <inki.dae@samsung.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
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.
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., 59 Temple Place, Suite 330, Boston,
26 #include <linux/types.h>
28 #include <asm/arch/cpu.h>
34 #include "logo_rgb24_wvga_portrait.h"
35 #include "opening_logo_rgb24_143_44.h"
38 extern void tl2796_panel_power_on(void);
39 extern void tl2796_panel_enable(void);
40 extern void tl2796_panel_init(void);
47 void *lcd_console_address;
52 static unsigned int panel_width, panel_height;
54 static unsigned short makepixel565(char r, char g, char b)
56 return (unsigned short)(((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3));
59 static unsigned int makepixel8888(char a, char r, char g, char b)
61 return (unsigned int)((a << 24) | (r << 16) | (g << 8) | b);
64 static void read_image16(char* pImg, int x1pos, int y1pos, int x2pos,
65 int y2pos, unsigned short pixel)
67 unsigned short *pDst = (unsigned short *)pImg;
68 unsigned int offset_s;
71 for(i = y1pos; i < y2pos; i++) {
72 for(j = x1pos; j < x2pos; j++) {
73 offset_s = i * panel_width + j;
74 *(pDst + offset_s) = pixel;
79 static void read_image32(char* pImg, int x1pos, int y1pos, int x2pos,
80 int y2pos, unsigned int pixel)
82 unsigned int *pDst = (unsigned int *)pImg;
83 unsigned int offset_s;
86 for (i = y1pos; i < y2pos; i++) {
87 for (j = x1pos; j < x2pos; j++) {
88 offset_s = i * panel_width + j;
89 *(pDst+offset_s) = pixel;
97 static void s5pc_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
99 unsigned long palette_size, palette_mem_size;
100 unsigned int fb_size;
102 fb_size = vid->vl_row * vid->vl_col * (vid->vl_bpix >> 3);
106 palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
107 palette_mem_size = palette_size * sizeof(u32);
109 s5pc_fimd_lcd_init_mem((unsigned long)lcd_base, (unsigned long)fb_size, palette_size);
111 udebug("fb_size=%d, screen_base=%x, palette_size=%d, palettle_mem_size=%d\n",
112 fb_size, (unsigned int)lcd_base, (int)palette_size, (int)palette_mem_size);
115 static void s5pc_lcd_init(vidinfo_t *vid)
117 s5pc_fimd_lcd_init(vid);
120 static void lcd_test(unsigned int width, unsigned int height)
122 unsigned int height_level = height / 3;
125 read_image32((char *)lcd_base, 0, 0, width, height_level,
126 makepixel8888(0, 255, 0, 0));
128 read_image32((char *)lcd_base, 0, height_level, width,
129 height_level * 2, makepixel8888(0, 0, 255, 0));
131 read_image32((char *)lcd_base, 0, height_level * 2, width, height,
132 makepixel8888(0, 0, 0, 255));
135 int conv_rgb565_to_rgb888(unsigned short rgb565, unsigned int sw)
137 char red, green, blue;
138 unsigned int threshold = 150;
140 red = (rgb565 & 0xF800) >> 11;
141 green = (rgb565 & 0x7E0) >> 5;
142 blue = (rgb565 & 0x1F);
148 /* correct error pixels of samsung logo. */
152 if (green > threshold)
154 if (blue > threshold)
158 return (red << 16 | green << 8 | blue);
161 void draw_bitmap(void *lcdbase, int x, int y, int w, int h, unsigned long *bmp)
165 unsigned long *fb = (unsigned long*)lcdbase;
167 for (j = y; j < (y + h); j++) {
168 for (i = x; i < (x + w); i++)
169 *(fb + (j * panel_width) + i) = *(bmp + k++);
173 void _draw_samsung_logo(void *lcdbase, int x, int y, int w, int h, unsigned short *bmp)
175 int i, j, error_range = 40;
178 unsigned long *fb = (unsigned long*)lcdbase;
180 for (j = y; j < (y + h); j++) {
181 for (i = x; i < (x + w); i++) {
182 pixel = (*(bmp + k++));
184 /* 40 lines under samsung logo image are error range. */
185 if (j > h + y - error_range)
186 *(fb + (j * panel_width) + i) =
187 conv_rgb565_to_rgb888(pixel, 1);
189 *(fb + (j * panel_width) + i) =
190 conv_rgb565_to_rgb888(pixel, 0);
195 static void draw_samsung_logo(void* lcdbase)
199 x = ((panel_width - 298) >> 1);
200 y = ((panel_height - 78) >> 1) - 5;
202 _draw_samsung_logo(lcdbase, x, y, 298, 78, (unsigned short *) logo);
205 static void lcd_panel_on(vidinfo_t *vid)
207 udelay(vid->init_delay);
212 if (vid->lcd_power_on) {
213 vid->lcd_power_on(1);
216 udelay(vid->power_on_delay);
218 if (vid->reset_lcd) {
222 udelay(vid->reset_delay);
224 if (vid->backlight_on) {
225 vid->backlight_on(1);
232 if (vid->enable_ldo) {
237 /* extern void init_onenand_ext2(void); */
238 extern void init_panel_info(vidinfo_t *vid);
240 void lcd_ctrl_init(void *lcdbase)
244 s5pc_lcd_init_mem(lcdbase, &panel_info);
246 /* initialize parameters which is specific to panel. */
247 init_panel_info(&panel_info);
249 panel_width = panel_info.vl_width;
250 panel_height = panel_info.vl_height;
252 option = getenv("lcd");
255 if (strcmp(option, "test") == 0) {
256 memset(lcdbase, 0, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP >> 3);
257 lcd_test(panel_width, panel_height);
258 } else if (strcmp(option, "image") == 0)
259 memcpy(lcdbase, LOGO_RGB24, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP >> 3);
261 memset(lcdbase, 0, PANEL_WIDTH*PANEL_HEIGHT*S5P_LCD_BPP >> 3);
262 draw_samsung_logo(lcdbase);
266 memset(lcdbase, 0, panel_width * panel_height * (32 >> 3));
267 draw_samsung_logo(lcdbase);
269 s5pc_lcd_init(&panel_info);
274 set_font_color(FONT_WHITE);
279 /* init_onenand_ext2(); */
283 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blud)
288 void lcd_enable(void)
290 lcd_panel_on(&panel_info);
293 ulong calc_fbsize(void)
295 return s5pc_fimd_calc_fbsize();
298 void s5pc1xxfb_test(void *lcdbase)
300 lcd_ctrl_init(lcdbase);