diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fb.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fb.c | 142 |
1 files changed, 94 insertions, 48 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c index 4ef4cd3f993..65a22cad7b3 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c @@ -6,34 +6,24 @@ * Joonyoung Shim <jy0922.shim@samsung.com> * Seung-Woo Kim <sw0312.kim@samsung.com> * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. + * 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/drmP.h> #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_fb_helper.h> +#include <uapi/drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_fb.h" +#include "exynos_drm_fbdev.h" #include "exynos_drm_gem.h" +#include "exynos_drm_iommu.h" +#include "exynos_drm_crtc.h" #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) @@ -50,12 +40,39 @@ struct exynos_drm_fb { struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER]; }; +static int check_fb_gem_memory_type(struct drm_device *drm_dev, + struct exynos_drm_gem_obj *exynos_gem_obj) +{ + unsigned int flags; + + /* + * if exynos drm driver supports iommu then framebuffer can use + * all the buffer types. + */ + if (is_drm_iommu_supported(drm_dev)) + return 0; + + flags = exynos_gem_obj->flags; + + /* + * without iommu support, not support physically non-continuous memory + * for framebuffer. + */ + if (IS_NONCONTIG_BUFFER(flags)) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + return -EINVAL; + } + + return 0; +} + static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) { struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); unsigned int i; - DRM_DEBUG_KMS("%s\n", __FILE__); + /* make sure that overlay data are updated before relesing fb. */ + exynos_drm_crtc_complete_scanout(fb); drm_framebuffer_cleanup(fb); @@ -79,7 +96,9 @@ static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb, { struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); - DRM_DEBUG_KMS("%s\n", __FILE__); + /* This fb should have only one gem object. */ + if (WARN_ON(exynos_fb->buf_cnt != 1)) + return -EINVAL; return drm_gem_handle_create(file_priv, &exynos_fb->exynos_gem_obj[0]->base, handle); @@ -90,8 +109,6 @@ static int exynos_drm_fb_dirty(struct drm_framebuffer *fb, unsigned color, struct drm_clip_rect *clips, unsigned num_clips) { - DRM_DEBUG_KMS("%s\n", __FILE__); - /* TODO */ return 0; @@ -128,13 +145,23 @@ exynos_drm_framebuffer_init(struct drm_device *dev, struct drm_gem_object *obj) { struct exynos_drm_fb *exynos_fb; + struct exynos_drm_gem_obj *exynos_gem_obj; int ret; + exynos_gem_obj = to_exynos_gem_obj(obj); + + ret = check_fb_gem_memory_type(dev, exynos_gem_obj); + if (ret < 0) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + return ERR_PTR(-EINVAL); + } + exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); - if (!exynos_fb) { - DRM_ERROR("failed to allocate exynos drm framebuffer\n"); + if (!exynos_fb) return ERR_PTR(-ENOMEM); - } + + drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); + exynos_fb->exynos_gem_obj[0] = exynos_gem_obj; ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); if (ret) { @@ -142,9 +169,6 @@ exynos_drm_framebuffer_init(struct drm_device *dev, return ERR_PTR(ret); } - drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); - exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); - return &exynos_fb->fb; } @@ -190,25 +214,23 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) { struct drm_gem_object *obj; - struct drm_framebuffer *fb; + struct exynos_drm_gem_obj *exynos_gem_obj; struct exynos_drm_fb *exynos_fb; - int i; + int i, ret; - DRM_DEBUG_KMS("%s\n", __FILE__); + exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); + if (!exynos_fb) + return ERR_PTR(-ENOMEM); obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]); if (!obj) { DRM_ERROR("failed to lookup gem object\n"); - return ERR_PTR(-ENOENT); - } - - fb = exynos_drm_framebuffer_init(dev, mode_cmd, obj); - if (IS_ERR(fb)) { - drm_gem_object_unreference_unlocked(obj); - return fb; + ret = -ENOENT; + goto err_free; } - exynos_fb = to_exynos_fb(fb); + drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); + exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); exynos_fb->buf_cnt = exynos_drm_format_num_buffers(mode_cmd); DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt); @@ -218,14 +240,40 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, mode_cmd->handles[i]); if (!obj) { DRM_ERROR("failed to lookup gem object\n"); - exynos_drm_fb_destroy(fb); - return ERR_PTR(-ENOENT); + ret = -ENOENT; + exynos_fb->buf_cnt = i; + goto err_unreference; } - exynos_fb->exynos_gem_obj[i] = to_exynos_gem_obj(obj); + exynos_gem_obj = to_exynos_gem_obj(obj); + exynos_fb->exynos_gem_obj[i] = exynos_gem_obj; + + ret = check_fb_gem_memory_type(dev, exynos_gem_obj); + if (ret < 0) { + DRM_ERROR("cannot use this gem memory type for fb.\n"); + goto err_unreference; + } } - return fb; + ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); + if (ret) { + DRM_ERROR("failed to init framebuffer.\n"); + goto err_unreference; + } + + return &exynos_fb->fb; + +err_unreference: + for (i = 0; i < exynos_fb->buf_cnt; i++) { + struct drm_gem_object *obj; + + obj = &exynos_fb->exynos_gem_obj[i]->base; + if (obj) + drm_gem_object_unreference_unlocked(obj); + } +err_free: + kfree(exynos_fb); + return ERR_PTR(ret); } struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, @@ -234,8 +282,6 @@ struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); struct exynos_drm_gem_buf *buffer; - DRM_DEBUG_KMS("%s\n", __FILE__); - if (index >= MAX_FB_BUFFER) return NULL; @@ -243,9 +289,7 @@ struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, if (!buffer) return NULL; - DRM_DEBUG_KMS("vaddr = 0x%lx, dma_addr = 0x%lx\n", - (unsigned long)buffer->kvaddr, - (unsigned long)buffer->dma_addr); + DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)buffer->dma_addr); return buffer; } @@ -257,6 +301,8 @@ static void exynos_drm_output_poll_changed(struct drm_device *dev) if (fb_helper) drm_fb_helper_hotplug_event(fb_helper); + else + exynos_drm_fbdev_init(dev); } static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |