paul@15 | 1 | /* |
paul@15 | 2 | * Ben NanoNote LCD initialisation, based on uboot-xburst and xburst-tools. |
paul@15 | 3 | * |
paul@33 | 4 | * Copyright (C) 2001-2002 Wolfgang Denk, DENX Software Engineering, <wd@denx.de> |
paul@217 | 5 | * Copyright (C) 2015, 2016, 2017 Paul Boddie <paul@boddie.org.uk> |
paul@15 | 6 | * |
paul@63 | 7 | * This program is free software: you can redistribute it and/or modify |
paul@63 | 8 | * it under the terms of the GNU General Public License as published by |
paul@63 | 9 | * the Free Software Foundation, either version 3 of the License, or |
paul@63 | 10 | * (at your option) any later version. |
paul@15 | 11 | * |
paul@63 | 12 | * This program is distributed in the hope that it will be useful, |
paul@63 | 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
paul@63 | 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
paul@63 | 15 | * GNU General Public License for more details. |
paul@15 | 16 | * |
paul@63 | 17 | * You should have received a copy of the GNU General Public License |
paul@63 | 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
paul@15 | 19 | */ |
paul@15 | 20 | |
paul@155 | 21 | #include "board-display.h" |
paul@34 | 22 | |
paul@229 | 23 | #include "lcd.h" |
paul@33 | 24 | #include "jzlcd.h" |
paul@33 | 25 | #include "sdram.h" |
paul@227 | 26 | #include "cpu.h" |
paul@33 | 27 | #include "board.h" |
paul@15 | 28 | |
paul@40 | 29 | extern vidinfo_t panel_info; |
paul@221 | 30 | static uint32_t lcd_base; |
paul@68 | 31 | |
paul@227 | 32 | |
paul@227 | 33 | |
paul@221 | 34 | static uint16_t get_line_length() |
paul@100 | 35 | { |
paul@221 | 36 | return ALIGN((panel_info.jz_fb->w * panel_info.jz_fb->bpp) / 8, sizeof(uint32_t)); |
paul@100 | 37 | } |
paul@100 | 38 | |
paul@221 | 39 | static uint32_t *get_pixel32(uint16_t h, uint16_t v) |
paul@68 | 40 | { |
paul@217 | 41 | return (uint32_t *) (lcd_base + v * get_line_length()) + h; |
paul@100 | 42 | } |
paul@68 | 43 | |
paul@221 | 44 | static uint16_t *get_pixel16(uint16_t h, uint16_t v) |
paul@100 | 45 | { |
paul@217 | 46 | return (uint16_t *) (lcd_base + v * get_line_length()) + h; |
paul@100 | 47 | } |
paul@100 | 48 | |
paul@221 | 49 | static uint8_t *get_pixel8(uint16_t h, uint16_t v) |
paul@101 | 50 | { |
paul@217 | 51 | return (uint8_t *) (lcd_base + v * get_line_length()) + h; |
paul@101 | 52 | } |
paul@101 | 53 | |
paul@221 | 54 | static uint8_t *get_pixel4(uint16_t h, uint16_t v) |
paul@103 | 55 | { |
paul@217 | 56 | return (uint8_t *) (lcd_base + v * get_line_length()) + h / 2; |
paul@103 | 57 | } |
paul@103 | 58 | |
paul@221 | 59 | static inline uint16_t div(uint16_t num, uint16_t denom, uint16_t scale) |
paul@103 | 60 | { |
paul@103 | 61 | return (scale * num) / denom; |
paul@103 | 62 | } |
paul@103 | 63 | |
paul@217 | 64 | static uint32_t pixel(uint8_t r, uint8_t g, uint8_t b, uint8_t rmax, uint8_t gmax, uint8_t bmax, uint8_t rshift, uint8_t gshift, uint8_t bshift) |
paul@104 | 65 | { |
paul@104 | 66 | return (div(r, 255, rmax) << rshift) | (div(g, 255, gmax) << gshift) | (div(b, 255, bmax) << bshift); |
paul@104 | 67 | } |
paul@104 | 68 | |
paul@221 | 69 | uint32_t get_bitmap_value(uint16_t x, uint32_t value) |
paul@162 | 70 | { |
paul@221 | 71 | return (value >> (((panel_info.jz_fb->w - 1 - x) * 32) / panel_info.jz_fb->w)) % 2 ? 0xffffffff : 0; |
paul@162 | 72 | } |
paul@162 | 73 | |
paul@221 | 74 | static void get_colour(uint16_t h, uint16_t v, uint8_t rgb[], uint16_t pixel_type) |
paul@100 | 75 | { |
paul@221 | 76 | uint16_t v_max = panel_info.jz_fb->h - 1; |
paul@221 | 77 | uint16_t h_max = panel_info.jz_fb->w - 1; |
paul@100 | 78 | |
paul@138 | 79 | rgb[(pixel_type - 1) % 3] = div(h, h_max, 255); |
paul@138 | 80 | rgb[pixel_type % 3] = div(v, v_max, 255); |
paul@138 | 81 | rgb[(pixel_type + 1) % 3] = (rgb[0] + rgb[1]) / 2; |
paul@101 | 82 | } |
paul@101 | 83 | |
paul@221 | 84 | static void set_pixel32(uint16_t h, uint16_t v, uint32_t value) |
paul@161 | 85 | { |
paul@217 | 86 | uint32_t *pix = get_pixel32(h, v); |
paul@161 | 87 | *pix = value; |
paul@161 | 88 | } |
paul@161 | 89 | |
paul@221 | 90 | static void set_pixel16_565(uint16_t h, uint16_t v, uint32_t value) |
paul@161 | 91 | { |
paul@217 | 92 | uint16_t *pix = get_pixel16(h, v); |
paul@217 | 93 | *pix = (uint16_t) value; |
paul@161 | 94 | } |
paul@161 | 95 | |
paul@221 | 96 | static void set_pixel8(uint16_t h, uint16_t v, uint32_t value) |
paul@161 | 97 | { |
paul@217 | 98 | uint8_t *pix = get_pixel8(h, v); |
paul@217 | 99 | *pix = (uint8_t) value; |
paul@161 | 100 | } |
paul@161 | 101 | |
paul@221 | 102 | static void set_pixel4(uint16_t h, uint16_t v, uint32_t value) |
paul@161 | 103 | { |
paul@217 | 104 | uint8_t *pix = get_pixel4(h, v); |
paul@217 | 105 | uint8_t mask = h & 1 ? 0xf0 : 0x0f; |
paul@217 | 106 | *pix = (*pix & mask) | ((uint8_t) value); |
paul@161 | 107 | } |
paul@161 | 108 | |
paul@221 | 109 | void set_pixel(uint16_t h, uint16_t v, uint32_t value) |
paul@161 | 110 | { |
paul@221 | 111 | switch (panel_info.jz_fb->bpp) |
paul@161 | 112 | { |
paul@221 | 113 | case 32: |
paul@161 | 114 | set_pixel32(h, v, value); |
paul@161 | 115 | break; |
paul@161 | 116 | |
paul@221 | 117 | case 8: |
paul@161 | 118 | set_pixel8(h, v, value); |
paul@161 | 119 | break; |
paul@161 | 120 | |
paul@221 | 121 | case 4: |
paul@161 | 122 | set_pixel4(h, v, value); |
paul@161 | 123 | break; |
paul@161 | 124 | |
paul@221 | 125 | case 16: |
paul@161 | 126 | default: |
paul@161 | 127 | set_pixel16_565(h, v, value); |
paul@161 | 128 | break; |
paul@161 | 129 | } |
paul@161 | 130 | } |
paul@221 | 131 | static void test_pixel32(uint16_t h, uint16_t v, uint16_t pixel_type) |
paul@101 | 132 | { |
paul@217 | 133 | uint8_t rgb[3]; |
paul@104 | 134 | |
paul@138 | 135 | get_colour(h, v, rgb, pixel_type); |
paul@162 | 136 | set_pixel32(h, v, pixel(rgb[0], rgb[1], rgb[2], 255, 255, 255, 16, 8, 0) | get_bitmap_value(h, pixel_type)); |
paul@100 | 137 | } |
paul@100 | 138 | |
paul@221 | 139 | static void test_pixel16_565(uint16_t h, uint16_t v, uint16_t pixel_type) |
paul@100 | 140 | { |
paul@217 | 141 | uint8_t rgb[3]; |
paul@104 | 142 | |
paul@138 | 143 | get_colour(h, v, rgb, pixel_type); |
paul@162 | 144 | set_pixel16_565(h, v, pixel(rgb[0], rgb[1], rgb[2], 31, 63, 31, 11, 5, 0) | get_bitmap_value(h, pixel_type)); |
paul@101 | 145 | } |
paul@100 | 146 | |
paul@221 | 147 | static void test_pixel8(uint16_t h, uint16_t v, uint16_t pixel_type) |
paul@101 | 148 | { |
paul@217 | 149 | uint8_t rgb[3]; |
paul@104 | 150 | |
paul@138 | 151 | get_colour(h, v, rgb, pixel_type); |
paul@162 | 152 | set_pixel8(h, v, pixel(rgb[0], rgb[1], rgb[2], 7, 7, 3, 5, 2, 0) | get_bitmap_value(h, pixel_type)); |
paul@100 | 153 | } |
paul@100 | 154 | |
paul@221 | 155 | static void test_pixel4(uint16_t h, uint16_t v, uint16_t pixel_type) |
paul@103 | 156 | { |
paul@217 | 157 | uint8_t rgb[3]; |
paul@104 | 158 | |
paul@138 | 159 | get_colour(h, v, rgb, pixel_type); |
paul@162 | 160 | set_pixel4(h, v, pixel(rgb[0], rgb[1], rgb[2], 1, 2, 1, 3, 1, 0) | get_bitmap_value(h, pixel_type)); |
paul@103 | 161 | } |
paul@103 | 162 | |
paul@221 | 163 | void test_pixel(uint16_t h, uint16_t v, uint16_t pixel_type) |
paul@100 | 164 | { |
paul@221 | 165 | switch (panel_info.jz_fb->bpp) |
paul@100 | 166 | { |
paul@221 | 167 | case 32: |
paul@138 | 168 | test_pixel32(h, v, pixel_type); |
paul@100 | 169 | break; |
paul@100 | 170 | |
paul@221 | 171 | case 8: |
paul@138 | 172 | test_pixel8(h, v, pixel_type); |
paul@101 | 173 | break; |
paul@101 | 174 | |
paul@221 | 175 | case 4: |
paul@138 | 176 | test_pixel4(h, v, pixel_type); |
paul@103 | 177 | break; |
paul@103 | 178 | |
paul@221 | 179 | case 16: |
paul@100 | 180 | default: |
paul@138 | 181 | test_pixel16_565(h, v, pixel_type); |
paul@100 | 182 | break; |
paul@100 | 183 | } |
paul@100 | 184 | } |
paul@100 | 185 | |
paul@221 | 186 | void clear_pixel32(uint16_t h, uint16_t v) |
paul@100 | 187 | { |
paul@217 | 188 | uint32_t *pix = get_pixel32(h, v); |
paul@100 | 189 | *pix = 0; |
paul@100 | 190 | } |
paul@100 | 191 | |
paul@221 | 192 | void clear_pixel16(uint16_t h, uint16_t v) |
paul@100 | 193 | { |
paul@217 | 194 | uint16_t *pix = get_pixel16(h, v); |
paul@100 | 195 | *pix = 0; |
paul@68 | 196 | } |
paul@68 | 197 | |
paul@221 | 198 | void clear_pixel8(uint16_t h, uint16_t v) |
paul@101 | 199 | { |
paul@217 | 200 | uint8_t *pix = get_pixel8(h, v); |
paul@101 | 201 | *pix = 0; |
paul@101 | 202 | } |
paul@101 | 203 | |
paul@221 | 204 | void clear_pixel4(uint16_t h, uint16_t v) |
paul@103 | 205 | { |
paul@217 | 206 | uint8_t *pix = get_pixel4(h, v); |
paul@217 | 207 | uint8_t mask = h & 1 ? 0xf0 : 0x0f; |
paul@103 | 208 | *pix = *pix & mask; |
paul@103 | 209 | } |
paul@103 | 210 | |
paul@221 | 211 | void clear_pixel(uint16_t h, uint16_t v) |
paul@68 | 212 | { |
paul@221 | 213 | switch (panel_info.jz_fb->bpp) |
paul@100 | 214 | { |
paul@221 | 215 | case 32: |
paul@100 | 216 | clear_pixel32(h, v); |
paul@100 | 217 | break; |
paul@68 | 218 | |
paul@221 | 219 | case 8: |
paul@101 | 220 | clear_pixel8(h, v); |
paul@101 | 221 | break; |
paul@101 | 222 | |
paul@221 | 223 | case 4: |
paul@103 | 224 | clear_pixel4(h, v); |
paul@103 | 225 | break; |
paul@103 | 226 | |
paul@221 | 227 | case 16: |
paul@100 | 228 | default: |
paul@100 | 229 | clear_pixel16(h, v); |
paul@100 | 230 | break; |
paul@100 | 231 | } |
paul@68 | 232 | } |
paul@40 | 233 | |
paul@100 | 234 | void test_pattern() |
paul@15 | 235 | { |
paul@221 | 236 | uint16_t v_max = panel_info.jz_fb->h; |
paul@221 | 237 | uint16_t h_max = panel_info.jz_fb->w; |
paul@221 | 238 | uint16_t v, h; |
paul@68 | 239 | |
paul@68 | 240 | for (v = 0; v < v_max; v += 1) { |
paul@68 | 241 | for (h = 0; h < h_max; h += 1) { |
paul@138 | 242 | test_pixel(h, v, 1); |
paul@68 | 243 | } |
paul@68 | 244 | } |
paul@68 | 245 | } |
paul@68 | 246 | |
paul@221 | 247 | void lcd_clear(uint32_t lcd_base) |
paul@68 | 248 | { |
paul@221 | 249 | uint16_t v_max = panel_info.jz_fb->h; |
paul@221 | 250 | uint16_t h_max = panel_info.jz_fb->w; |
paul@221 | 251 | uint16_t v, h; |
paul@221 | 252 | uint32_t *pix = (uint32_t *)lcd_base; |
paul@15 | 253 | |
paul@22 | 254 | for (v = 0; v < v_max; v += 1) { |
paul@22 | 255 | for (h = 0; h < h_max; h += 1) { |
paul@68 | 256 | *pix++ = 0; |
paul@15 | 257 | } |
paul@15 | 258 | } |
paul@15 | 259 | } |
paul@15 | 260 | |
paul@227 | 261 | |
paul@227 | 262 | |
paul@15 | 263 | /* LCD initialisation. */ |
paul@15 | 264 | |
paul@227 | 265 | #ifdef CONFIG_CPU_JZ4730 |
paul@227 | 266 | void jz4730_set_lcd_frequencies(uint32_t pclk, uint8_t ratio) |
paul@227 | 267 | { |
paul@227 | 268 | uint32_t val; |
paul@227 | 269 | |
paul@227 | 270 | val = __cpm_get_pllout() / pclk; |
paul@227 | 271 | REG_CPM_CFCR2 = val - 1; |
paul@227 | 272 | val = pclk * ratio; |
paul@227 | 273 | |
paul@227 | 274 | if (val > 150000000) { |
paul@227 | 275 | val = 150000000; |
paul@227 | 276 | } |
paul@227 | 277 | |
paul@227 | 278 | val = __cpm_get_pllout() / val; |
paul@227 | 279 | val--; |
paul@227 | 280 | |
paul@227 | 281 | if (val > 0xF) |
paul@227 | 282 | val = 0xF; |
paul@227 | 283 | |
paul@227 | 284 | __cpm_set_ldiv(val); |
paul@227 | 285 | REG_CPM_CPCCR = REG_CPM_CPCCR | CPM_CPCCR_CE; /* update divide */ |
paul@227 | 286 | } |
paul@227 | 287 | #else |
paul@227 | 288 | void jz4740_set_lcd_frequencies(uint32_t pclk, uint8_t ratio) |
paul@227 | 289 | { |
paul@227 | 290 | uint32_t val; |
paul@227 | 291 | int pll_div; |
paul@227 | 292 | |
paul@227 | 293 | pll_div = REG_CPM_CPCCR & CPM_CPCCR_PCS; /* clock source,0:pllout/2 1: pllout */ |
paul@227 | 294 | pll_div = pll_div ? 1 : 2; |
paul@227 | 295 | val = (__cpm_get_pllout() / pll_div) / pclk; |
paul@227 | 296 | val--; |
paul@227 | 297 | |
paul@227 | 298 | if ( val > 0x1ff ) { |
paul@227 | 299 | val = 0x1ff; |
paul@227 | 300 | } |
paul@227 | 301 | |
paul@227 | 302 | __cpm_set_pixdiv(val); |
paul@227 | 303 | |
paul@227 | 304 | val = pclk * ratio; /* LCDClock > 2.5*Pixclock */ |
paul@227 | 305 | |
paul@227 | 306 | if ( val > 150000000 ) { |
paul@227 | 307 | val = 150000000; |
paul@227 | 308 | } |
paul@227 | 309 | |
paul@227 | 310 | val = (__cpm_get_pllout() / pll_div) / val; |
paul@227 | 311 | val--; |
paul@227 | 312 | |
paul@227 | 313 | if (val > 0x1f) |
paul@227 | 314 | val = 0x1f; |
paul@227 | 315 | |
paul@227 | 316 | __cpm_set_ldiv(val); |
paul@227 | 317 | REG_CPM_CPCCR = REG_CPM_CPCCR | CPM_CPCCR_CE; /* update divide */ |
paul@227 | 318 | } |
paul@227 | 319 | #endif |
paul@227 | 320 | |
paul@227 | 321 | void lcd_set_timing(vidinfo_t *vid) |
paul@227 | 322 | { |
paul@227 | 323 | uint32_t pclk = jz4740_lcd_get_pixel_clock(vid); |
paul@227 | 324 | |
paul@227 | 325 | __cpm_stop_lcd(); |
paul@227 | 326 | |
paul@227 | 327 | #ifdef CONFIG_CPU_JZ4730 |
paul@227 | 328 | jz4730_set_lcd_frequencies(pclk, 4); |
paul@227 | 329 | #else |
paul@227 | 330 | jz4740_set_lcd_frequencies(pclk, 3); |
paul@227 | 331 | #endif |
paul@227 | 332 | |
paul@227 | 333 | __cpm_start_lcd(); |
paul@227 | 334 | udelay(1000); |
paul@227 | 335 | } |
paul@227 | 336 | |
paul@229 | 337 | static void lcd_display_pin_init() |
paul@229 | 338 | { |
paul@229 | 339 | __lcd_display_pin_init(); |
paul@229 | 340 | } |
paul@229 | 341 | |
paul@229 | 342 | static void lcd_display_on() |
paul@229 | 343 | { |
paul@229 | 344 | __lcd_display_on(); |
paul@229 | 345 | } |
paul@229 | 346 | |
paul@229 | 347 | static void lcd_set_bpp(uint8_t bpp) |
paul@229 | 348 | { |
paul@229 | 349 | jz4740_lcd_set_bpp(bpp, &panel_info); |
paul@229 | 350 | } |
paul@229 | 351 | |
paul@229 | 352 | static void lcd_enable() |
paul@229 | 353 | { |
paul@229 | 354 | jz4740_lcd_enable(&panel_info); |
paul@229 | 355 | } |
paul@229 | 356 | |
paul@229 | 357 | static void lcd_disable() |
paul@229 | 358 | { |
paul@229 | 359 | jz4740_lcd_disable(&panel_info); |
paul@229 | 360 | } |
paul@229 | 361 | |
paul@229 | 362 | static void lcd_quick_disable() |
paul@229 | 363 | { |
paul@229 | 364 | jz4740_lcd_quick_disable(&panel_info); |
paul@229 | 365 | } |
paul@229 | 366 | |
paul@227 | 367 | uint32_t lcd_ctrl_init() |
paul@227 | 368 | { |
paul@227 | 369 | vidinfo_t *vid = &panel_info; |
paul@227 | 370 | struct jz_mem_info *fbi = &vid->jz_mem; |
paul@227 | 371 | void *fb_vaddr; |
paul@227 | 372 | |
paul@227 | 373 | /* Start from the top of memory and obtain the framebuffer region. */ |
paul@227 | 374 | |
paul@227 | 375 | fb_vaddr = (void *) (get_memory_size() - jz4740_lcd_get_total_size(vid)); |
paul@227 | 376 | |
paul@227 | 377 | jz4740_lcd_ctrl_init((void *) LCD_BASE_KSEG1, fb_vaddr, vid); |
paul@227 | 378 | flush_cache_all(); |
paul@227 | 379 | jz4740_lcd_hw_init(vid); |
paul@227 | 380 | lcd_set_timing(vid); |
paul@227 | 381 | jz4740_lcd_dma_init(vid); |
paul@227 | 382 | |
paul@227 | 383 | return fbi->screen; |
paul@227 | 384 | } |
paul@227 | 385 | |
paul@195 | 386 | void lcd_init() |
paul@15 | 387 | { |
paul@229 | 388 | lcd_display_pin_init(); |
paul@229 | 389 | lcd_display_on(); |
paul@20 | 390 | |
paul@221 | 391 | /* Initialise the member here since the address is otherwise invalid. */ |
paul@221 | 392 | |
paul@222 | 393 | panel_info.jz_fb = (struct jzfb_info *) ((uint32_t) panel_info.jz_fb & ~0x80000000); |
paul@221 | 394 | |
paul@97 | 395 | lcd_base = lcd_ctrl_init(); |
paul@15 | 396 | lcd_clear(lcd_base); |
paul@15 | 397 | lcd_enable(); |
paul@15 | 398 | } |