diff options
Diffstat (limited to 'drivers/gpu/drm/tinydrm/core')
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/Makefile | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-core.c | 183 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 160 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 24 |
4 files changed, 16 insertions, 354 deletions
diff --git a/drivers/gpu/drm/tinydrm/core/Makefile b/drivers/gpu/drm/tinydrm/core/Makefile index fb221e6f8885..01065e920aea 100644 --- a/drivers/gpu/drm/tinydrm/core/Makefile +++ b/drivers/gpu/drm/tinydrm/core/Makefile @@ -1,3 +1,4 @@ -tinydrm-y := tinydrm-core.o tinydrm-pipe.o tinydrm-helpers.o +# SPDX-License-Identifier: GPL-2.0-only +tinydrm-y := tinydrm-pipe.o tinydrm-helpers.o obj-$(CONFIG_DRM_TINYDRM) += tinydrm.o diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c b/drivers/gpu/drm/tinydrm/core/tinydrm-core.c deleted file mode 100644 index 554abd5d3b53..000000000000 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-core.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * 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 <drm/drm_atomic.h> -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_probe_helper.h> -#include <drm/drm_print.h> -#include <drm/tinydrm/tinydrm.h> -#include <linux/device.h> -#include <linux/dma-buf.h> -#include <linux/module.h> - -/** - * DOC: overview - * - * This library provides driver helpers for very simple display hardware. - * - * It is based on &drm_simple_display_pipe coupled with a &drm_connector which - * has only one fixed &drm_display_mode. The framebuffers are backed by the - * cma helper and have support for framebuffer flushing (dirty). - * fbdev support is also included. - * - */ - -/** - * DOC: core - * - * The driver allocates &tinydrm_device, initializes it using - * devm_tinydrm_init(), sets up the pipeline using tinydrm_display_pipe_init() - * and registers the DRM device using devm_tinydrm_register(). - */ - -static const struct drm_mode_config_funcs tinydrm_mode_config_funcs = { - .fb_create = drm_gem_fb_create_with_dirty, - .atomic_check = drm_atomic_helper_check, - .atomic_commit = drm_atomic_helper_commit, -}; - -static int tinydrm_init(struct device *parent, struct tinydrm_device *tdev, - struct drm_driver *driver) -{ - struct drm_device *drm; - - /* - * We don't embed drm_device, because that prevent us from using - * devm_kzalloc() to allocate tinydrm_device in the driver since - * drm_dev_put() frees the structure. The devm_ functions provide - * for easy error handling. - */ - drm = drm_dev_alloc(driver, parent); - if (IS_ERR(drm)) - return PTR_ERR(drm); - - tdev->drm = drm; - drm->dev_private = tdev; - drm_mode_config_init(drm); - drm->mode_config.funcs = &tinydrm_mode_config_funcs; - drm->mode_config.allow_fb_modifiers = true; - - return 0; -} - -static void tinydrm_fini(struct tinydrm_device *tdev) -{ - drm_mode_config_cleanup(tdev->drm); - tdev->drm->dev_private = NULL; - drm_dev_put(tdev->drm); -} - -static void devm_tinydrm_release(void *data) -{ - tinydrm_fini(data); -} - -/** - * devm_tinydrm_init - Initialize tinydrm device - * @parent: Parent device object - * @tdev: tinydrm device - * @driver: DRM driver - * - * This function initializes @tdev, the underlying DRM device and it's - * mode_config. Resources will be automatically freed on driver detach (devres) - * using drm_mode_config_cleanup() and drm_dev_put(). - * - * Returns: - * Zero on success, negative error code on failure. - */ -int devm_tinydrm_init(struct device *parent, struct tinydrm_device *tdev, - struct drm_driver *driver) -{ - int ret; - - ret = tinydrm_init(parent, tdev, driver); - if (ret) - return ret; - - ret = devm_add_action(parent, devm_tinydrm_release, tdev); - if (ret) - tinydrm_fini(tdev); - - return ret; -} -EXPORT_SYMBOL(devm_tinydrm_init); - -static int tinydrm_register(struct tinydrm_device *tdev) -{ - struct drm_device *drm = tdev->drm; - int ret; - - ret = drm_dev_register(tdev->drm, 0); - if (ret) - return ret; - - ret = drm_fbdev_generic_setup(drm, 0); - if (ret) - DRM_ERROR("Failed to initialize fbdev: %d\n", ret); - - return 0; -} - -static void tinydrm_unregister(struct tinydrm_device *tdev) -{ - drm_atomic_helper_shutdown(tdev->drm); - drm_dev_unregister(tdev->drm); -} - -static void devm_tinydrm_register_release(void *data) -{ - tinydrm_unregister(data); -} - -/** - * devm_tinydrm_register - Register tinydrm device - * @tdev: tinydrm device - * - * This function registers the underlying DRM device and fbdev. - * These resources will be automatically unregistered on driver detach (devres) - * and the display pipeline will be disabled. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int devm_tinydrm_register(struct tinydrm_device *tdev) -{ - struct device *dev = tdev->drm->dev; - int ret; - - ret = tinydrm_register(tdev); - if (ret) - return ret; - - ret = devm_add_action(dev, devm_tinydrm_register_release, tdev); - if (ret) - tinydrm_unregister(tdev); - - return ret; -} -EXPORT_SYMBOL(devm_tinydrm_register); - -/** - * tinydrm_shutdown - Shutdown tinydrm - * @tdev: tinydrm device - * - * This function makes sure that the display pipeline is disabled. - * Used by drivers in their shutdown callback to turn off the display - * on machine shutdown and reboot. - */ -void tinydrm_shutdown(struct tinydrm_device *tdev) -{ - drm_atomic_helper_shutdown(tdev->drm); -} -EXPORT_SYMBOL(tinydrm_shutdown); - -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c index 2737b6fdadc8..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) /** @@ -365,3 +207,5 @@ int tinydrm_spi_transfer(struct spi_device *spi, u32 speed_hz, EXPORT_SYMBOL(tinydrm_spi_transfer); #endif /* CONFIG_SPI */ + +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c index bb5b1c1e21ba..bb8a7ed8ddf6 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c @@ -13,7 +13,7 @@ #include <drm/drm_modes.h> #include <drm/drm_probe_helper.h> #include <drm/drm_print.h> -#include <drm/tinydrm/tinydrm.h> +#include <drm/drm_simple_kms_helper.h> struct tinydrm_connector { struct drm_connector base; @@ -129,7 +129,8 @@ static int tinydrm_rotate_mode(struct drm_display_mode *mode, /** * tinydrm_display_pipe_init - Initialize display pipe - * @tdev: tinydrm device + * @drm: DRM device + * @pipe: Display pipe * @funcs: Display pipe functions * @connector_type: Connector type * @formats: Array of supported formats (DRM_FORMAT\_\*) @@ -143,16 +144,15 @@ static int tinydrm_rotate_mode(struct drm_display_mode *mode, * Returns: * Zero on success, negative error code on failure. */ -int -tinydrm_display_pipe_init(struct tinydrm_device *tdev, - const struct drm_simple_display_pipe_funcs *funcs, - int connector_type, - const uint32_t *formats, - unsigned int format_count, - const struct drm_display_mode *mode, - unsigned int rotation) +int tinydrm_display_pipe_init(struct drm_device *drm, + struct drm_simple_display_pipe *pipe, + const struct drm_simple_display_pipe_funcs *funcs, + int connector_type, + const uint32_t *formats, + unsigned int format_count, + const struct drm_display_mode *mode, + unsigned int rotation) { - struct drm_device *drm = tdev->drm; struct drm_display_mode mode_copy; struct drm_connector *connector; int ret; @@ -177,7 +177,7 @@ tinydrm_display_pipe_init(struct tinydrm_device *tdev, if (IS_ERR(connector)) return PTR_ERR(connector); - return drm_simple_display_pipe_init(drm, &tdev->pipe, funcs, formats, + return drm_simple_display_pipe_init(drm, pipe, funcs, formats, format_count, modifiers, connector); } EXPORT_SYMBOL(tinydrm_display_pipe_init); |