Hi Thomas, kernel test robot noticed the following build warnings: [auto build test WARNING on 57d3b83a83c5527325efb5bcaf594da09fe4a41b] url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Zimmermann/drm-format-helper-Cache-buffers-with-struct-drm_format_conv_state/20231005-170643 base: 57d3b83a83c5527325efb5bcaf594da09fe4a41b patch link: https://lore.kernel.org/r/20231005090520.16511-4-tzimmermann%40suse.de patch subject: [PATCH v4 3/7] drm/format-helper: Pass format-conversion state to helpers config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231005/202310051822.r1l9UoUq-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231005/202310051822.r1l9UoUq-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310051822.r1l9UoUq-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/drm_format_helper.c:344: warning: Function parameter or member 'state' not described in 'drm_fb_swab' >> drivers/gpu/drm/drm_format_helper.c:344: warning: Excess function parameter 'xfrm' description in 'drm_fb_swab' >> drivers/gpu/drm/drm_format_helper.c:405: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_rgb332' >> drivers/gpu/drm/drm_format_helper.c:405: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_rgb332' >> drivers/gpu/drm/drm_format_helper.c:477: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_rgb565' >> drivers/gpu/drm/drm_format_helper.c:477: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_rgb565' >> drivers/gpu/drm/drm_format_helper.c:535: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_xrgb1555' >> drivers/gpu/drm/drm_format_helper.c:535: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_xrgb1555' >> drivers/gpu/drm/drm_format_helper.c:588: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_argb1555' >> drivers/gpu/drm/drm_format_helper.c:588: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_argb1555' >> drivers/gpu/drm/drm_format_helper.c:641: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_rgba5551' >> drivers/gpu/drm/drm_format_helper.c:641: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_rgba5551' >> drivers/gpu/drm/drm_format_helper.c:692: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_rgb888' >> drivers/gpu/drm/drm_format_helper.c:692: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_rgb888' >> drivers/gpu/drm/drm_format_helper.c:741: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_argb8888' >> drivers/gpu/drm/drm_format_helper.c:741: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_argb8888' >> drivers/gpu/drm/drm_format_helper.c:857: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_xrgb2101010' >> drivers/gpu/drm/drm_format_helper.c:857: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_xrgb2101010' >> drivers/gpu/drm/drm_format_helper.c:912: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_argb2101010' >> drivers/gpu/drm/drm_format_helper.c:912: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_argb2101010' drivers/gpu/drm/drm_format_helper.c:968: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_gray8' drivers/gpu/drm/drm_format_helper.c:968: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_gray8' drivers/gpu/drm/drm_format_helper.c:1007: warning: Function parameter or member 'state' not described in 'drm_fb_blit' drivers/gpu/drm/drm_format_helper.c:1007: warning: Excess function parameter 'xfrm' description in 'drm_fb_blit' drivers/gpu/drm/drm_format_helper.c:1114: warning: Function parameter or member 'state' not described in 'drm_fb_xrgb8888_to_mono' drivers/gpu/drm/drm_format_helper.c:1114: warning: Excess function parameter 'xfrm' description in 'drm_fb_xrgb8888_to_mono' vim +344 drivers/gpu/drm/drm_format_helper.c 41fd6f0a6dd62d Thomas Zimmermann 2022-04-27 317 7415287e1f3675 Gerd Hoffmann 2019-04-05 318 /** bd34cea2a0e4b0 Noralf Trønnes 2020-05-09 319 * drm_fb_swab - Swap bytes into clip buffer ce582859ca7b33 Thomas Zimmermann 2022-08-08 320 * @dst: Array of destination buffers ce582859ca7b33 Thomas Zimmermann 2022-08-08 321 * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines ce582859ca7b33 Thomas Zimmermann 2022-08-08 322 * within @dst; can be NULL if scanlines are stored next to each other. 504a51d70f86e3 Thomas Zimmermann 2022-08-08 323 * @src: Array of source buffers 7415287e1f3675 Gerd Hoffmann 2019-04-05 324 * @fb: DRM framebuffer 7415287e1f3675 Gerd Hoffmann 2019-04-05 325 * @clip: Clip rectangle area to copy bd34cea2a0e4b0 Noralf Trønnes 2020-05-09 326 * @cached: Source buffer is mapped cached (eg. not write-combined) 05864d296c0bfc Thomas Zimmermann 2023-10-05 327 * @xfrm: Transform and conversion state bd34cea2a0e4b0 Noralf Trønnes 2020-05-09 328 * ce582859ca7b33 Thomas Zimmermann 2022-08-08 329 * This function copies parts of a framebuffer to display memory and swaps per-pixel ce582859ca7b33 Thomas Zimmermann 2022-08-08 330 * bytes during the process. Destination and framebuffer formats must match. The 504a51d70f86e3 Thomas Zimmermann 2022-08-08 331 * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at ce582859ca7b33 Thomas Zimmermann 2022-08-08 332 * least as many entries as there are planes in @fb's format. Each entry stores the ce582859ca7b33 Thomas Zimmermann 2022-08-08 333 * value for the format's respective color plane at the same index. If @cached is ce582859ca7b33 Thomas Zimmermann 2022-08-08 334 * false a temporary buffer is used to cache one pixel line at a time to speed up ce582859ca7b33 Thomas Zimmermann 2022-08-08 335 * slow uncached reads. bd34cea2a0e4b0 Noralf Trønnes 2020-05-09 336 * ce582859ca7b33 Thomas Zimmermann 2022-08-08 337 * This function does not apply clipping on @dst (i.e. the destination is at the ce582859ca7b33 Thomas Zimmermann 2022-08-08 338 * top-left corner). 7415287e1f3675 Gerd Hoffmann 2019-04-05 339 */ ce582859ca7b33 Thomas Zimmermann 2022-08-08 340 void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch, 504a51d70f86e3 Thomas Zimmermann 2022-08-08 341 const struct iosys_map *src, const struct drm_framebuffer *fb, 05864d296c0bfc Thomas Zimmermann 2023-10-05 342 const struct drm_rect *clip, bool cached, 05864d296c0bfc Thomas Zimmermann 2023-10-05 343 struct drm_format_conv_state *state) 7415287e1f3675 Gerd Hoffmann 2019-04-05 @344 { ce582859ca7b33 Thomas Zimmermann 2022-08-08 345 const struct drm_format_info *format = fb->format; ce582859ca7b33 Thomas Zimmermann 2022-08-08 346 u8 cpp = DIV_ROUND_UP(drm_format_info_bpp(format, 0), 8); ce582859ca7b33 Thomas Zimmermann 2022-08-08 347 void (*swab_line)(void *dbuf, const void *sbuf, unsigned int npixels); 3e3543c8a19cad Thomas Zimmermann 2021-11-10 348 cce6bedb38ed08 Thomas Zimmermann 2022-04-27 349 switch (cpp) { cce6bedb38ed08 Thomas Zimmermann 2022-04-27 350 case 4: ce582859ca7b33 Thomas Zimmermann 2022-08-08 351 swab_line = drm_fb_swab32_line; cce6bedb38ed08 Thomas Zimmermann 2022-04-27 352 break; cce6bedb38ed08 Thomas Zimmermann 2022-04-27 353 case 2: ce582859ca7b33 Thomas Zimmermann 2022-08-08 354 swab_line = drm_fb_swab16_line; cce6bedb38ed08 Thomas Zimmermann 2022-04-27 355 break; cce6bedb38ed08 Thomas Zimmermann 2022-04-27 356 default: cce6bedb38ed08 Thomas Zimmermann 2022-04-27 357 drm_warn_once(fb->dev, "Format %p4cc has unsupported pixel size.\n", ce582859ca7b33 Thomas Zimmermann 2022-08-08 358 &format->format); ce582859ca7b33 Thomas Zimmermann 2022-08-08 359 return; f241b064426943 Thomas Zimmermann 2022-08-08 360 } ce582859ca7b33 Thomas Zimmermann 2022-08-08 361 05864d296c0bfc Thomas Zimmermann 2023-10-05 362 drm_fb_xfrm(dst, dst_pitch, &cpp, src, fb, clip, cached, state, swab_line); 7415287e1f3675 Gerd Hoffmann 2019-04-05 363 } bd34cea2a0e4b0 Noralf Trønnes 2020-05-09 364 EXPORT_SYMBOL(drm_fb_swab); 7415287e1f3675 Gerd Hoffmann 2019-04-05 365 cce6bedb38ed08 Thomas Zimmermann 2022-04-27 366 static void drm_fb_xrgb8888_to_rgb332_line(void *dbuf, const void *sbuf, unsigned int pixels) cee0b7cbf1c02f Noralf Trønnes 2021-09-29 367 { a6fdb669bb6523 Thomas Zimmermann 2022-04-27 368 u8 *dbuf8 = dbuf; a6fdb669bb6523 Thomas Zimmermann 2022-04-27 369 const __le32 *sbuf32 = sbuf; cee0b7cbf1c02f Noralf Trønnes 2021-09-29 370 unsigned int x; cee0b7cbf1c02f Noralf Trønnes 2021-09-29 371 u32 pix; cee0b7cbf1c02f Noralf Trønnes 2021-09-29 372 cee0b7cbf1c02f Noralf Trønnes 2021-09-29 373 for (x = 0; x < pixels; x++) { a6fdb669bb6523 Thomas Zimmermann 2022-04-27 374 pix = le32_to_cpu(sbuf32[x]); a6fdb669bb6523 Thomas Zimmermann 2022-04-27 375 dbuf8[x] = ((pix & 0x00e00000) >> 16) | cee0b7cbf1c02f Noralf Trønnes 2021-09-29 376 ((pix & 0x0000e000) >> 11) | cee0b7cbf1c02f Noralf Trønnes 2021-09-29 377 ((pix & 0x000000c0) >> 6); cee0b7cbf1c02f Noralf Trønnes 2021-09-29 378 } cee0b7cbf1c02f Noralf Trønnes 2021-09-29 379 } cee0b7cbf1c02f Noralf Trønnes 2021-09-29 380 cee0b7cbf1c02f Noralf Trønnes 2021-09-29 381 /** cee0b7cbf1c02f Noralf Trønnes 2021-09-29 382 * drm_fb_xrgb8888_to_rgb332 - Convert XRGB8888 to RGB332 clip buffer e13140a0628314 Thomas Zimmermann 2022-08-08 383 * @dst: Array of RGB332 destination buffers e13140a0628314 Thomas Zimmermann 2022-08-08 384 * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines e13140a0628314 Thomas Zimmermann 2022-08-08 385 * within @dst; can be NULL if scanlines are stored next to each other. 504a51d70f86e3 Thomas Zimmermann 2022-08-08 386 * @src: Array of XRGB8888 source buffers cee0b7cbf1c02f Noralf Trønnes 2021-09-29 387 * @fb: DRM framebuffer cee0b7cbf1c02f Noralf Trønnes 2021-09-29 388 * @clip: Clip rectangle area to copy 05864d296c0bfc Thomas Zimmermann 2023-10-05 389 * @xfrm: Transform and conversion state cee0b7cbf1c02f Noralf Trønnes 2021-09-29 390 * e13140a0628314 Thomas Zimmermann 2022-08-08 391 * This function copies parts of a framebuffer to display memory and converts the e13140a0628314 Thomas Zimmermann 2022-08-08 392 * color format during the process. Destination and framebuffer formats must match. The 504a51d70f86e3 Thomas Zimmermann 2022-08-08 393 * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at e13140a0628314 Thomas Zimmermann 2022-08-08 394 * least as many entries as there are planes in @fb's format. Each entry stores the e13140a0628314 Thomas Zimmermann 2022-08-08 395 * value for the format's respective color plane at the same index. e13140a0628314 Thomas Zimmermann 2022-08-08 396 * e13140a0628314 Thomas Zimmermann 2022-08-08 397 * This function does not apply clipping on @dst (i.e. the destination is at the e13140a0628314 Thomas Zimmermann 2022-08-08 398 * top-left corner). e13140a0628314 Thomas Zimmermann 2022-08-08 399 * e13140a0628314 Thomas Zimmermann 2022-08-08 400 * Drivers can use this function for RGB332 devices that don't support XRGB8888 natively. cee0b7cbf1c02f Noralf Trønnes 2021-09-29 401 */ e13140a0628314 Thomas Zimmermann 2022-08-08 402 void drm_fb_xrgb8888_to_rgb332(struct iosys_map *dst, const unsigned int *dst_pitch, 504a51d70f86e3 Thomas Zimmermann 2022-08-08 403 const struct iosys_map *src, const struct drm_framebuffer *fb, 05864d296c0bfc Thomas Zimmermann 2023-10-05 404 const struct drm_rect *clip, struct drm_format_conv_state *state) cee0b7cbf1c02f Noralf Trønnes 2021-09-29 @405 { f241b064426943 Thomas Zimmermann 2022-08-08 406 static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { f241b064426943 Thomas Zimmermann 2022-08-08 407 1, e13140a0628314 Thomas Zimmermann 2022-08-08 408 }; e13140a0628314 Thomas Zimmermann 2022-08-08 409 05864d296c0bfc Thomas Zimmermann 2023-10-05 410 drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, f241b064426943 Thomas Zimmermann 2022-08-08 411 drm_fb_xrgb8888_to_rgb332_line); cee0b7cbf1c02f Noralf Trønnes 2021-09-29 412 } cee0b7cbf1c02f Noralf Trønnes 2021-09-29 413 EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb332); cee0b7cbf1c02f Noralf Trønnes 2021-09-29 414 a6fdb669bb6523 Thomas Zimmermann 2022-04-27 415 static void drm_fb_xrgb8888_to_rgb565_line(void *dbuf, const void *sbuf, unsigned int pixels) bcc4442008aca0 Gerd Hoffmann 2019-04-05 416 { f21d62c9ce3db2 Thomas Zimmermann 2023-01-02 417 __le16 *dbuf16 = dbuf; 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 418 const __le32 *sbuf32 = sbuf; d653bd39482377 Gerd Hoffmann 2019-04-10 419 unsigned int x; d653bd39482377 Gerd Hoffmann 2019-04-10 420 u16 val16; 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 421 u32 pix; bcc4442008aca0 Gerd Hoffmann 2019-04-05 422 d653bd39482377 Gerd Hoffmann 2019-04-10 423 for (x = 0; x < pixels; x++) { 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 424 pix = le32_to_cpu(sbuf32[x]); 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 425 val16 = ((pix & 0x00F80000) >> 8) | 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 426 ((pix & 0x0000FC00) >> 5) | 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 427 ((pix & 0x000000F8) >> 3); f21d62c9ce3db2 Thomas Zimmermann 2023-01-02 428 dbuf16[x] = cpu_to_le16(val16); bcc4442008aca0 Gerd Hoffmann 2019-04-05 429 } bcc4442008aca0 Gerd Hoffmann 2019-04-05 430 } bcc4442008aca0 Gerd Hoffmann 2019-04-05 431 f21d62c9ce3db2 Thomas Zimmermann 2023-01-02 432 /* TODO: implement this helper as conversion to RGB565|BIG_ENDIAN */ a6fdb669bb6523 Thomas Zimmermann 2022-04-27 433 static void drm_fb_xrgb8888_to_rgb565_swab_line(void *dbuf, const void *sbuf, 69add027fd2bac Thomas Zimmermann 2022-04-27 434 unsigned int pixels) 69add027fd2bac Thomas Zimmermann 2022-04-27 435 { f21d62c9ce3db2 Thomas Zimmermann 2023-01-02 436 __le16 *dbuf16 = dbuf; 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 437 const __le32 *sbuf32 = sbuf; 69add027fd2bac Thomas Zimmermann 2022-04-27 438 unsigned int x; 69add027fd2bac Thomas Zimmermann 2022-04-27 439 u16 val16; 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 440 u32 pix; 69add027fd2bac Thomas Zimmermann 2022-04-27 441 69add027fd2bac Thomas Zimmermann 2022-04-27 442 for (x = 0; x < pixels; x++) { 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 443 pix = le32_to_cpu(sbuf32[x]); 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 444 val16 = ((pix & 0x00F80000) >> 8) | 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 445 ((pix & 0x0000FC00) >> 5) | 4d9db10576ff51 Geert Uytterhoeven 2022-07-08 446 ((pix & 0x000000F8) >> 3); f21d62c9ce3db2 Thomas Zimmermann 2023-01-02 447 dbuf16[x] = cpu_to_le16(swab16(val16)); 69add027fd2bac Thomas Zimmermann 2022-04-27 448 } 69add027fd2bac Thomas Zimmermann 2022-04-27 449 } 69add027fd2bac Thomas Zimmermann 2022-04-27 450 7415287e1f3675 Gerd Hoffmann 2019-04-05 451 /** 7415287e1f3675 Gerd Hoffmann 2019-04-05 452 * drm_fb_xrgb8888_to_rgb565 - Convert XRGB8888 to RGB565 clip buffer ab298c29d414a5 Thomas Zimmermann 2022-08-08 453 * @dst: Array of RGB565 destination buffers ab298c29d414a5 Thomas Zimmermann 2022-08-08 454 * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines ab298c29d414a5 Thomas Zimmermann 2022-08-08 455 * within @dst; can be NULL if scanlines are stored next to each other. 504a51d70f86e3 Thomas Zimmermann 2022-08-08 456 * @src: Array of XRGB8888 source buffer 7415287e1f3675 Gerd Hoffmann 2019-04-05 457 * @fb: DRM framebuffer 7415287e1f3675 Gerd Hoffmann 2019-04-05 458 * @clip: Clip rectangle area to copy 05864d296c0bfc Thomas Zimmermann 2023-10-05 459 * @xfrm: Transform and conversion state d653bd39482377 Gerd Hoffmann 2019-04-10 460 * @swab: Swap bytes 7415287e1f3675 Gerd Hoffmann 2019-04-05 461 * ab298c29d414a5 Thomas Zimmermann 2022-08-08 462 * This function copies parts of a framebuffer to display memory and converts the ab298c29d414a5 Thomas Zimmermann 2022-08-08 463 * color format during the process. Destination and framebuffer formats must match. The 504a51d70f86e3 Thomas Zimmermann 2022-08-08 464 * parameters @dst, @dst_pitch and @src refer to arrays. Each array must have at ab298c29d414a5 Thomas Zimmermann 2022-08-08 465 * least as many entries as there are planes in @fb's format. Each entry stores the ab298c29d414a5 Thomas Zimmermann 2022-08-08 466 * value for the format's respective color plane at the same index. bcc4442008aca0 Gerd Hoffmann 2019-04-05 467 * ab298c29d414a5 Thomas Zimmermann 2022-08-08 468 * This function does not apply clipping on @dst (i.e. the destination is at the ab298c29d414a5 Thomas Zimmermann 2022-08-08 469 * top-left corner). ab298c29d414a5 Thomas Zimmermann 2022-08-08 470 * ab298c29d414a5 Thomas Zimmermann 2022-08-08 471 * Drivers can use this function for RGB565 devices that don't support XRGB8888 natively. bcc4442008aca0 Gerd Hoffmann 2019-04-05 472 */ ab298c29d414a5 Thomas Zimmermann 2022-08-08 473 void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pitch, 504a51d70f86e3 Thomas Zimmermann 2022-08-08 474 const struct iosys_map *src, const struct drm_framebuffer *fb, 05864d296c0bfc Thomas Zimmermann 2023-10-05 475 const struct drm_rect *clip, struct drm_format_conv_state *state, 05864d296c0bfc Thomas Zimmermann 2023-10-05 476 bool swab) bcc4442008aca0 Gerd Hoffmann 2019-04-05 @477 { f241b064426943 Thomas Zimmermann 2022-08-08 478 static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { f241b064426943 Thomas Zimmermann 2022-08-08 479 2, ab298c29d414a5 Thomas Zimmermann 2022-08-08 480 }; f241b064426943 Thomas Zimmermann 2022-08-08 481 ab298c29d414a5 Thomas Zimmermann 2022-08-08 482 void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels); ab298c29d414a5 Thomas Zimmermann 2022-08-08 483 69add027fd2bac Thomas Zimmermann 2022-04-27 484 if (swab) ab298c29d414a5 Thomas Zimmermann 2022-08-08 485 xfrm_line = drm_fb_xrgb8888_to_rgb565_swab_line; ab298c29d414a5 Thomas Zimmermann 2022-08-08 486 else ab298c29d414a5 Thomas Zimmermann 2022-08-08 487 xfrm_line = drm_fb_xrgb8888_to_rgb565_line; ab298c29d414a5 Thomas Zimmermann 2022-08-08 488 05864d296c0bfc Thomas Zimmermann 2023-10-05 489 drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, xfrm_line); 7415287e1f3675 Gerd Hoffmann 2019-04-05 490 } ab298c29d414a5 Thomas Zimmermann 2022-08-08 491 EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565); 7415287e1f3675 Gerd Hoffmann 2019-04-05 492 10cd592e639edc Thomas Zimmermann 2023-01-02 493 static void drm_fb_xrgb8888_to_xrgb1555_line(void *dbuf, const void *sbuf, unsigned int pixels) 10cd592e639edc Thomas Zimmermann 2023-01-02 494 { 10cd592e639edc Thomas Zimmermann 2023-01-02 495 __le16 *dbuf16 = dbuf; 10cd592e639edc Thomas Zimmermann 2023-01-02 496 const __le32 *sbuf32 = sbuf; 10cd592e639edc Thomas Zimmermann 2023-01-02 497 unsigned int x; 10cd592e639edc Thomas Zimmermann 2023-01-02 498 u16 val16; 10cd592e639edc Thomas Zimmermann 2023-01-02 499 u32 pix; 10cd592e639edc Thomas Zimmermann 2023-01-02 500 10cd592e639edc Thomas Zimmermann 2023-01-02 501 for (x = 0; x < pixels; x++) { 10cd592e639edc Thomas Zimmermann 2023-01-02 502 pix = le32_to_cpu(sbuf32[x]); 10cd592e639edc Thomas Zimmermann 2023-01-02 503 val16 = ((pix & 0x00f80000) >> 9) | 10cd592e639edc Thomas Zimmermann 2023-01-02 504 ((pix & 0x0000f800) >> 6) | 10cd592e639edc Thomas Zimmermann 2023-01-02 505 ((pix & 0x000000f8) >> 3); 10cd592e639edc Thomas Zimmermann 2023-01-02 506 dbuf16[x] = cpu_to_le16(val16); 10cd592e639edc Thomas Zimmermann 2023-01-02 507 } 10cd592e639edc Thomas Zimmermann 2023-01-02 508 } 10cd592e639edc Thomas Zimmermann 2023-01-02 509 10cd592e639edc Thomas Zimmermann 2023-01-02 510 /** 10cd592e639edc Thomas Zimmermann 2023-01-02 511 * drm_fb_xrgb8888_to_xrgb1555 - Convert XRGB8888 to XRGB1555 clip buffer 10cd592e639edc Thomas Zimmermann 2023-01-02 512 * @dst: Array of XRGB1555 destination buffers 10cd592e639edc Thomas Zimmermann 2023-01-02 513 * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines 10cd592e639edc Thomas Zimmermann 2023-01-02 514 * within @dst; can be NULL if scanlines are stored next to each other. 10cd592e639edc Thomas Zimmermann 2023-01-02 515 * @src: Array of XRGB8888 source buffer 10cd592e639edc Thomas Zimmermann 2023-01-02 516 * @fb: DRM framebuffer 10cd592e639edc Thomas Zimmermann 2023-01-02 517 * @clip: Clip rectangle area to copy 05864d296c0bfc Thomas Zimmermann 2023-10-05 518 * @xfrm: Transform and conversion state 10cd592e639edc Thomas Zimmermann 2023-01-02 519 * 10cd592e639edc Thomas Zimmermann 2023-01-02 520 * This function copies parts of a framebuffer to display memory and converts 10cd592e639edc Thomas Zimmermann 2023-01-02 521 * the color format during the process. The parameters @dst, @dst_pitch and 10cd592e639edc Thomas Zimmermann 2023-01-02 522 * @src refer to arrays. Each array must have at least as many entries as 10cd592e639edc Thomas Zimmermann 2023-01-02 523 * there are planes in @fb's format. Each entry stores the value for the 10cd592e639edc Thomas Zimmermann 2023-01-02 524 * format's respective color plane at the same index. 10cd592e639edc Thomas Zimmermann 2023-01-02 525 * 10cd592e639edc Thomas Zimmermann 2023-01-02 526 * This function does not apply clipping on @dst (i.e. the destination is at the 10cd592e639edc Thomas Zimmermann 2023-01-02 527 * top-left corner). 10cd592e639edc Thomas Zimmermann 2023-01-02 528 * 10cd592e639edc Thomas Zimmermann 2023-01-02 529 * Drivers can use this function for XRGB1555 devices that don't support 10cd592e639edc Thomas Zimmermann 2023-01-02 530 * XRGB8888 natively. 10cd592e639edc Thomas Zimmermann 2023-01-02 531 */ 10cd592e639edc Thomas Zimmermann 2023-01-02 532 void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch, 10cd592e639edc Thomas Zimmermann 2023-01-02 533 const struct iosys_map *src, const struct drm_framebuffer *fb, 05864d296c0bfc Thomas Zimmermann 2023-10-05 534 const struct drm_rect *clip, struct drm_format_conv_state *state) 10cd592e639edc Thomas Zimmermann 2023-01-02 @535 { 10cd592e639edc Thomas Zimmermann 2023-01-02 536 static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 10cd592e639edc Thomas Zimmermann 2023-01-02 537 2, 10cd592e639edc Thomas Zimmermann 2023-01-02 538 }; 10cd592e639edc Thomas Zimmermann 2023-01-02 539 05864d296c0bfc Thomas Zimmermann 2023-10-05 540 drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, state, 10cd592e639edc Thomas Zimmermann 2023-01-02 541 drm_fb_xrgb8888_to_xrgb1555_line); 10cd592e639edc Thomas Zimmermann 2023-01-02 542 } 10cd592e639edc Thomas Zimmermann 2023-01-02 543 EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb1555); 10cd592e639edc Thomas Zimmermann 2023-01-02 544 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
