diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/Makefile | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_format_helper.c | 180 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 158 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/mipi-dbi.c | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/repaper.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/st7586.c | 3 |
6 files changed, 190 insertions, 164 deletions
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 38a97818347c..55d8deb68d45 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -38,7 +38,8 @@ drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_dsc.o drm_probe_helper drm_kms_helper_common.o drm_dp_dual_mode_helper.o \ drm_simple_kms_helper.o drm_modeset_helper.o \ drm_scdc_helper.o drm_gem_framebuffer_helper.o \ - drm_atomic_state_helper.o drm_damage_helper.o + drm_atomic_state_helper.o drm_damage_helper.o \ + drm_format_helper.o drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c new file mode 100644 index 000000000000..62bb4913d6f6 --- /dev/null +++ b/drivers/gpu/drm/drm_format_helper.c @@ -0,0 +1,180 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2016 Noralf Trønnes + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/slab.h> + +#include <drm/drm_format_helper.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_rect.h> + +/** + * drm_fb_memcpy - Copy clip buffer + * @dst: Destination buffer + * @vaddr: Source buffer + * @fb: DRM framebuffer + * @clip: Clip rectangle area to copy + */ +void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb, + struct drm_rect *clip) +{ + unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0); + unsigned int pitch = fb->pitches[0]; + void *src = vaddr + (clip->y1 * pitch) + (clip->x1 * cpp); + size_t len = (clip->x2 - clip->x1) * cpp; + unsigned int y; + + for (y = clip->y1; y < clip->y2; y++) { + memcpy(dst, src, len); + src += pitch; + dst += len; + } +} +EXPORT_SYMBOL(drm_fb_memcpy); + +/** + * drm_fb_swab16 - Swap bytes into clip buffer + * @dst: RGB565 destination buffer + * @vaddr: RGB565 source buffer + * @fb: DRM framebuffer + * @clip: Clip rectangle area to copy + */ +void drm_fb_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, + struct drm_rect *clip) +{ + size_t len = (clip->x2 - clip->x1) * sizeof(u16); + unsigned int x, y; + u16 *src, *buf; + + /* + * The cma memory is write-combined so reads are uncached. + * Speed up by fetching one line at a time. + */ + buf = kmalloc(len, GFP_KERNEL); + if (!buf) + return; + + for (y = clip->y1; y < clip->y2; y++) { + src = vaddr + (y * fb->pitches[0]); + src += clip->x1; + memcpy(buf, src, len); + src = buf; + for (x = clip->x1; x < clip->x2; x++) + *dst++ = swab16(*src++); + } + + kfree(buf); +} +EXPORT_SYMBOL(drm_fb_swab16); + +/** + * drm_fb_xrgb8888_to_rgb565 - Convert XRGB8888 to RGB565 clip buffer + * @dst: RGB565 destination buffer + * @vaddr: XRGB8888 source buffer + * @fb: DRM framebuffer + * @clip: Clip rectangle area to copy + * @swap: Swap bytes + * + * Drivers can use this function for RGB565 devices that don't natively + * support XRGB8888. + */ +void drm_fb_xrgb8888_to_rgb565(u16 *dst, void *vaddr, + struct drm_framebuffer *fb, + struct drm_rect *clip, bool swap) +{ + size_t len = (clip->x2 - clip->x1) * sizeof(u32); + unsigned int x, y; + u32 *src, *buf; + u16 val16; + + /* + * The cma memory is write-combined so reads are uncached. + * Speed up by fetching one line at a time. + */ + buf = kmalloc(len, GFP_KERNEL); + if (!buf) + return; + + for (y = clip->y1; y < clip->y2; y++) { + src = vaddr + (y * fb->pitches[0]); + src += clip->x1; + memcpy(buf, src, len); + src = buf; + for (x = clip->x1; x < clip->x2; x++) { + val16 = ((*src & 0x00F80000) >> 8) | + ((*src & 0x0000FC00) >> 5) | + ((*src & 0x000000F8) >> 3); + src++; + if (swap) + *dst++ = swab16(val16); + else + *dst++ = val16; + } + } + + kfree(buf); +} +EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565); + +/** + * drm_fb_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale + * @dst: 8-bit grayscale destination buffer + * @vaddr: XRGB8888 source buffer + * @fb: DRM framebuffer + * @clip: Clip rectangle area to copy + * + * Drm doesn't have native monochrome or grayscale support. + * Such drivers can announce the commonly supported XR24 format to userspace + * and use this function to convert to the native format. + * + * Monochrome drivers will use the most significant bit, + * where 1 means foreground color and 0 background color. + * + * ITU BT.601 is used for the RGB -> luma (brightness) conversion. + */ +void drm_fb_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb, + struct drm_rect *clip) +{ + unsigned int len = (clip->x2 - clip->x1) * sizeof(u32); + unsigned int x, y; + void *buf; + u32 *src; + + if (WARN_ON(fb->format->format != DRM_FORMAT_XRGB8888)) + return; + /* + * The cma memory is write-combined so reads are uncached. + * Speed up by fetching one line at a time. + */ + buf = kmalloc(len, GFP_KERNEL); + if (!buf) + return; + + for (y = clip->y1; y < clip->y2; y++) { + src = vaddr + (y * fb->pitches[0]); + src += clip->x1; + memcpy(buf, src, len); + src = buf; + for (x = clip->x1; x < clip->x2; x++) { + u8 r = (*src & 0x00ff0000) >> 16; + u8 g = (*src & 0x0000ff00) >> 8; + u8 b = *src & 0x000000ff; + + /* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */ + *dst++ = (3 * r + 6 * g + b) / 10; + src++; + } + } + + kfree(buf); +} +EXPORT_SYMBOL(drm_fb_xrgb8888_to_gray8); + diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c index d7b38dfb6438..6d540d93758f 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c @@ -26,164 +26,6 @@ static unsigned int spi_max; module_param(spi_max, uint, 0400); MODULE_PARM_DESC(spi_max, "Set a lower SPI max transfer size"); -/** - * tinydrm_memcpy - Copy clip buffer - * @dst: Destination buffer - * @vaddr: Source buffer - * @fb: DRM framebuffer - * @clip: Clip rectangle area to copy - */ -void tinydrm_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip) -{ - unsigned int cpp = drm_format_plane_cpp(fb->format->format, 0); - unsigned int pitch = fb->pitches[0]; - void *src = vaddr + (clip->y1 * pitch) + (clip->x1 * cpp); - size_t len = (clip->x2 - clip->x1) * cpp; - unsigned int y; - - for (y = clip->y1; y < clip->y2; y++) { - memcpy(dst, src, len); - src += pitch; - dst += len; - } -} -EXPORT_SYMBOL(tinydrm_memcpy); - -/** - * tinydrm_swab16 - Swap bytes into clip buffer - * @dst: RGB565 destination buffer - * @vaddr: RGB565 source buffer - * @fb: DRM framebuffer - * @clip: Clip rectangle area to copy - */ -void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip) -{ - size_t len = (clip->x2 - clip->x1) * sizeof(u16); - unsigned int x, y; - u16 *src, *buf; - - /* - * The cma memory is write-combined so reads are uncached. - * Speed up by fetching one line at a time. - */ - buf = kmalloc(len, GFP_KERNEL); - if (!buf) - return; - - for (y = clip->y1; y < clip->y2; y++) { - src = vaddr + (y * fb->pitches[0]); - src += clip->x1; - memcpy(buf, src, len); - src = buf; - for (x = clip->x1; x < clip->x2; x++) - *dst++ = swab16(*src++); - } - - kfree(buf); -} -EXPORT_SYMBOL(tinydrm_swab16); - -/** - * tinydrm_xrgb8888_to_rgb565 - Convert XRGB8888 to RGB565 clip buffer - * @dst: RGB565 destination buffer - * @vaddr: XRGB8888 source buffer - * @fb: DRM framebuffer - * @clip: Clip rectangle area to copy - * @swap: Swap bytes - * - * Drivers can use this function for RGB565 devices that don't natively - * support XRGB8888. - */ -void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr, - struct drm_framebuffer *fb, - struct drm_rect *clip, bool swap) -{ - size_t len = (clip->x2 - clip->x1) * sizeof(u32); - unsigned int x, y; - u32 *src, *buf; - u16 val16; - - buf = kmalloc(len, GFP_KERNEL); - if (!buf) - return; - - for (y = clip->y1; y < clip->y2; y++) { - src = vaddr + (y * fb->pitches[0]); - src += clip->x1; - memcpy(buf, src, len); - src = buf; - for (x = clip->x1; x < clip->x2; x++) { - val16 = ((*src & 0x00F80000) >> 8) | - ((*src & 0x0000FC00) >> 5) | - ((*src & 0x000000F8) >> 3); - src++; - if (swap) - *dst++ = swab16(val16); - else - *dst++ = val16; - } - } - - kfree(buf); -} -EXPORT_SYMBOL(tinydrm_xrgb8888_to_rgb565); - -/** - * tinydrm_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale - * @dst: 8-bit grayscale destination buffer - * @vaddr: XRGB8888 source buffer - * @fb: DRM framebuffer - * @clip: Clip rectangle area to copy - * - * Drm doesn't have native monochrome or grayscale support. - * Such drivers can announce the commonly supported XR24 format to userspace - * and use this function to convert to the native format. - * - * Monochrome drivers will use the most significant bit, - * where 1 means foreground color and 0 background color. - * - * ITU BT.601 is used for the RGB -> luma (brightness) conversion. - */ -void tinydrm_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip) -{ - unsigned int len = (clip->x2 - clip->x1) * sizeof(u32); - unsigned int x, y; - void *buf; - u32 *src; - - if (WARN_ON(fb->format->format != DRM_FORMAT_XRGB8888)) - return; - /* - * The cma memory is write-combined so reads are uncached. - * Speed up by fetching one line at a time. - */ - buf = kmalloc(len, GFP_KERNEL); - if (!buf) - return; - - for (y = clip->y1; y < clip->y2; y++) { - src = vaddr + (y * fb->pitches[0]); - src += clip->x1; - memcpy(buf, src, len); - src = buf; - for (x = clip->x1; x < clip->x2; x++) { - u8 r = (*src & 0x00ff0000) >> 16; - u8 g = (*src & 0x0000ff00) >> 8; - u8 b = *src & 0x000000ff; - - /* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */ - *dst++ = (3 * r + 6 * g + b) / 10; - src++; - } - } - - kfree(buf); -} -EXPORT_SYMBOL(tinydrm_xrgb8888_to_gray8); - #if IS_ENABLED(CONFIG_SPI) /** diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c index 869c8f56da3b..85761b4abb83 100644 --- a/drivers/gpu/drm/tinydrm/mipi-dbi.c +++ b/drivers/gpu/drm/tinydrm/mipi-dbi.c @@ -21,6 +21,7 @@ #include <drm/drm_drv.h> #include <drm/drm_fb_cma_helper.h> #include <drm/drm_gem_cma_helper.h> +#include <drm/drm_format_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_vblank.h> @@ -218,12 +219,12 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, switch (fb->format->format) { case DRM_FORMAT_RGB565: if (swap) - tinydrm_swab16(dst, src, fb, clip); + drm_fb_swab16(dst, src, fb, clip); else - tinydrm_memcpy(dst, src, fb, clip); + drm_fb_memcpy(dst, src, fb, clip); break; case DRM_FORMAT_XRGB8888: - tinydrm_xrgb8888_to_rgb565(dst, src, fb, clip, swap); + drm_fb_xrgb8888_to_rgb565(dst, src, fb, clip, swap); break; default: dev_err_once(fb->dev->dev, "Format is not supported: %s\n", diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c index 3f3632457079..a29b8278324b 100644 --- a/drivers/gpu/drm/tinydrm/repaper.c +++ b/drivers/gpu/drm/tinydrm/repaper.c @@ -31,6 +31,7 @@ #include <drm/drm_drv.h> #include <drm/drm_fb_cma_helper.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_format_helper.h> #include <drm/drm_gem_cma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_rect.h> @@ -566,7 +567,7 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb) goto out_free; } - tinydrm_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip); + drm_fb_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip); if (import_attach) { ret = dma_buf_end_cpu_access(import_attach->dmabuf, diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c index d99957bac532..560d7ac0cadc 100644 --- a/drivers/gpu/drm/tinydrm/st7586.c +++ b/drivers/gpu/drm/tinydrm/st7586.c @@ -22,6 +22,7 @@ #include <drm/drm_drv.h> #include <drm/drm_fb_cma_helper.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_format_helper.h> #include <drm/drm_gem_cma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_rect.h> @@ -77,7 +78,7 @@ static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr, if (!buf) return; - tinydrm_xrgb8888_to_gray8(buf, vaddr, fb, clip); + drm_fb_xrgb8888_to_gray8(buf, vaddr, fb, clip); src = buf; for (y = clip->y1; y < clip->y2; y++) { |