Hi Jocelyn, kernel test robot noticed the following build warnings:
[auto build test WARNING on 2dde18cd1d8fac735875f2e4987f11817cc0bc2c] url: https://github.com/intel-lab-lkp/linux/commits/Jocelyn-Falempe/drm-format-helper-Export-line-conversion-helper-for-drm_panic/20231003-222642 base: 2dde18cd1d8fac735875f2e4987f11817cc0bc2c patch link: https://lore.kernel.org/r/20231003142508.190246-2-jfalempe%40redhat.com patch subject: [PATCH v4 1/4] drm/format-helper: Export line conversion helper for drm_panic config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231003/202310032302.dqsglde3-...@intel.com/config) compiler: m68k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231003/202310032302.dqsglde3-...@intel.com/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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202310032302.dqsglde3-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/drm_format_helper.c:436: warning: expecting prototype for >> drm_fb_xrgb8888_to_rgb565_line(). Prototype was for >> drm_fb_xrgb8888_to_xrgb1555_line() instead >> drivers/gpu/drm/drm_format_helper.c:494: warning: expecting prototype for >> drm_fb_xrgb8888_to_rgb565_line(). Prototype was for >> drm_fb_xrgb8888_to_argb1555_line() instead >> drivers/gpu/drm/drm_format_helper.c:777: warning: expecting prototype for >> drm_fb_xrgb8888_to_rgb888_line(). Prototype was for >> drm_fb_xrgb8888_to_xrgb2101010_line() instead >> drivers/gpu/drm/drm_format_helper.c:836: warning: expecting prototype for >> drm_fb_xrgb8888_to_rgb888_line(). Prototype was for >> drm_fb_xrgb8888_to_argb2101010_line() instead vim +436 drivers/gpu/drm/drm_format_helper.c 7415287e1f3675 Gerd Hoffmann 2019-04-05 428 ce913131bdeb03 Jocelyn Falempe 2023-10-03 429 /** ce913131bdeb03 Jocelyn Falempe 2023-10-03 430 * drm_fb_xrgb8888_to_rgb565_line - Convert one line from XRGB8888 to XRGB1555 ce913131bdeb03 Jocelyn Falempe 2023-10-03 431 * @dbuf: Pointer to the destination line (in XRGB1555) ce913131bdeb03 Jocelyn Falempe 2023-10-03 432 * @sbuf: Pointer to the source line (in XRGB8888) ce913131bdeb03 Jocelyn Falempe 2023-10-03 433 * @pixels: Number of pixels to convert. ce913131bdeb03 Jocelyn Falempe 2023-10-03 434 */ ce913131bdeb03 Jocelyn Falempe 2023-10-03 435 void drm_fb_xrgb8888_to_xrgb1555_line(void *dbuf, const void *sbuf, unsigned int pixels) 10cd592e639edc Thomas Zimmermann 2023-01-02 @436 { 10cd592e639edc Thomas Zimmermann 2023-01-02 437 __le16 *dbuf16 = dbuf; 10cd592e639edc Thomas Zimmermann 2023-01-02 438 const __le32 *sbuf32 = sbuf; 10cd592e639edc Thomas Zimmermann 2023-01-02 439 unsigned int x; 10cd592e639edc Thomas Zimmermann 2023-01-02 440 u16 val16; 10cd592e639edc Thomas Zimmermann 2023-01-02 441 u32 pix; 10cd592e639edc Thomas Zimmermann 2023-01-02 442 10cd592e639edc Thomas Zimmermann 2023-01-02 443 for (x = 0; x < pixels; x++) { 10cd592e639edc Thomas Zimmermann 2023-01-02 444 pix = le32_to_cpu(sbuf32[x]); 10cd592e639edc Thomas Zimmermann 2023-01-02 445 val16 = ((pix & 0x00f80000) >> 9) | 10cd592e639edc Thomas Zimmermann 2023-01-02 446 ((pix & 0x0000f800) >> 6) | 10cd592e639edc Thomas Zimmermann 2023-01-02 447 ((pix & 0x000000f8) >> 3); 10cd592e639edc Thomas Zimmermann 2023-01-02 448 dbuf16[x] = cpu_to_le16(val16); 10cd592e639edc Thomas Zimmermann 2023-01-02 449 } 10cd592e639edc Thomas Zimmermann 2023-01-02 450 } ce913131bdeb03 Jocelyn Falempe 2023-10-03 451 EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb1555_line); 10cd592e639edc Thomas Zimmermann 2023-01-02 452 10cd592e639edc Thomas Zimmermann 2023-01-02 453 /** 10cd592e639edc Thomas Zimmermann 2023-01-02 454 * drm_fb_xrgb8888_to_xrgb1555 - Convert XRGB8888 to XRGB1555 clip buffer 10cd592e639edc Thomas Zimmermann 2023-01-02 455 * @dst: Array of XRGB1555 destination buffers 10cd592e639edc Thomas Zimmermann 2023-01-02 456 * @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines 10cd592e639edc Thomas Zimmermann 2023-01-02 457 * within @dst; can be NULL if scanlines are stored next to each other. 10cd592e639edc Thomas Zimmermann 2023-01-02 458 * @src: Array of XRGB8888 source buffer 10cd592e639edc Thomas Zimmermann 2023-01-02 459 * @fb: DRM framebuffer 10cd592e639edc Thomas Zimmermann 2023-01-02 460 * @clip: Clip rectangle area to copy 10cd592e639edc Thomas Zimmermann 2023-01-02 461 * 10cd592e639edc Thomas Zimmermann 2023-01-02 462 * This function copies parts of a framebuffer to display memory and converts 10cd592e639edc Thomas Zimmermann 2023-01-02 463 * the color format during the process. The parameters @dst, @dst_pitch and 10cd592e639edc Thomas Zimmermann 2023-01-02 464 * @src refer to arrays. Each array must have at least as many entries as 10cd592e639edc Thomas Zimmermann 2023-01-02 465 * there are planes in @fb's format. Each entry stores the value for the 10cd592e639edc Thomas Zimmermann 2023-01-02 466 * format's respective color plane at the same index. 10cd592e639edc Thomas Zimmermann 2023-01-02 467 * 10cd592e639edc Thomas Zimmermann 2023-01-02 468 * This function does not apply clipping on @dst (i.e. the destination is at the 10cd592e639edc Thomas Zimmermann 2023-01-02 469 * top-left corner). 10cd592e639edc Thomas Zimmermann 2023-01-02 470 * 10cd592e639edc Thomas Zimmermann 2023-01-02 471 * Drivers can use this function for XRGB1555 devices that don't support 10cd592e639edc Thomas Zimmermann 2023-01-02 472 * XRGB8888 natively. 10cd592e639edc Thomas Zimmermann 2023-01-02 473 */ 10cd592e639edc Thomas Zimmermann 2023-01-02 474 void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch, 10cd592e639edc Thomas Zimmermann 2023-01-02 475 const struct iosys_map *src, const struct drm_framebuffer *fb, 10cd592e639edc Thomas Zimmermann 2023-01-02 476 const struct drm_rect *clip) 10cd592e639edc Thomas Zimmermann 2023-01-02 477 { 10cd592e639edc Thomas Zimmermann 2023-01-02 478 static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { 10cd592e639edc Thomas Zimmermann 2023-01-02 479 2, 10cd592e639edc Thomas Zimmermann 2023-01-02 480 }; 10cd592e639edc Thomas Zimmermann 2023-01-02 481 10cd592e639edc Thomas Zimmermann 2023-01-02 482 drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false, 10cd592e639edc Thomas Zimmermann 2023-01-02 483 drm_fb_xrgb8888_to_xrgb1555_line); 10cd592e639edc Thomas Zimmermann 2023-01-02 484 } 10cd592e639edc Thomas Zimmermann 2023-01-02 485 EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb1555); 10cd592e639edc Thomas Zimmermann 2023-01-02 486 ce913131bdeb03 Jocelyn Falempe 2023-10-03 487 /** ce913131bdeb03 Jocelyn Falempe 2023-10-03 488 * drm_fb_xrgb8888_to_rgb565_line - Convert one line from XRGB8888 to ARGB1555 ce913131bdeb03 Jocelyn Falempe 2023-10-03 489 * @dbuf: Pointer to the destination line (in ARGB1555) ce913131bdeb03 Jocelyn Falempe 2023-10-03 490 * @sbuf: Pointer to the source line (in XRGB8888) ce913131bdeb03 Jocelyn Falempe 2023-10-03 491 * @pixels: Number of pixels to convert. ce913131bdeb03 Jocelyn Falempe 2023-10-03 492 */ ce913131bdeb03 Jocelyn Falempe 2023-10-03 493 void drm_fb_xrgb8888_to_argb1555_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 = BIT(15) | /* set alpha bit */ 10cd592e639edc Thomas Zimmermann 2023-01-02 504 ((pix & 0x00f80000) >> 9) | 10cd592e639edc Thomas Zimmermann 2023-01-02 505 ((pix & 0x0000f800) >> 6) | 10cd592e639edc Thomas Zimmermann 2023-01-02 506 ((pix & 0x000000f8) >> 3); 10cd592e639edc Thomas Zimmermann 2023-01-02 507 dbuf16[x] = cpu_to_le16(val16); 10cd592e639edc Thomas Zimmermann 2023-01-02 508 } 10cd592e639edc Thomas Zimmermann 2023-01-02 509 } ce913131bdeb03 Jocelyn Falempe 2023-10-03 510 EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb1555_line); 10cd592e639edc Thomas Zimmermann 2023-01-02 511 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
