gm12u320.c (0454bc59be9e988422793f55a089ee4e86f11f25) gm12u320.c (49a3f51dfeeecb52c5aa28c5cb9592fe5e39bf95)
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2019 Hans de Goede <hdegoede@redhat.com>
4 */
5
6#include <linux/dma-buf.h>
7#include <linux/module.h>
8#include <linux/usb.h>

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245 src++;
246 }
247}
248
249static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
250{
251 int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
252 struct drm_framebuffer *fb;
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2019 Hans de Goede <hdegoede@redhat.com>
4 */
5
6#include <linux/dma-buf.h>
7#include <linux/module.h>
8#include <linux/usb.h>

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245 src++;
246 }
247}
248
249static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
250{
251 int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
252 struct drm_framebuffer *fb;
253 struct dma_buf_map map;
253 void *vaddr;
254 u8 *src;
255
256 mutex_lock(&gm12u320->fb_update.lock);
257
258 if (!gm12u320->fb_update.fb)
259 goto unlock;
260
261 fb = gm12u320->fb_update.fb;
262 x1 = gm12u320->fb_update.rect.x1;
263 x2 = gm12u320->fb_update.rect.x2;
264 y1 = gm12u320->fb_update.rect.y1;
265 y2 = gm12u320->fb_update.rect.y2;
266
254 void *vaddr;
255 u8 *src;
256
257 mutex_lock(&gm12u320->fb_update.lock);
258
259 if (!gm12u320->fb_update.fb)
260 goto unlock;
261
262 fb = gm12u320->fb_update.fb;
263 x1 = gm12u320->fb_update.rect.x1;
264 x2 = gm12u320->fb_update.rect.x2;
265 y1 = gm12u320->fb_update.rect.y1;
266 y2 = gm12u320->fb_update.rect.y2;
267
267 vaddr = drm_gem_shmem_vmap(fb->obj[0]);
268 if (IS_ERR(vaddr)) {
269 GM12U320_ERR("failed to vmap fb: %ld\n", PTR_ERR(vaddr));
268 ret = drm_gem_shmem_vmap(fb->obj[0], &map);
269 if (ret) {
270 GM12U320_ERR("failed to vmap fb: %d\n", ret);
270 goto put_fb;
271 }
271 goto put_fb;
272 }
273 vaddr = map.vaddr; /* TODO: Use mapping abstraction properly */
272
273 if (fb->obj[0]->import_attach) {
274 ret = dma_buf_begin_cpu_access(
275 fb->obj[0]->import_attach->dmabuf, DMA_FROM_DEVICE);
276 if (ret) {
277 GM12U320_ERR("dma_buf_begin_cpu_access err: %d\n", ret);
278 goto vunmap;
279 }

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315
316 if (fb->obj[0]->import_attach) {
317 ret = dma_buf_end_cpu_access(fb->obj[0]->import_attach->dmabuf,
318 DMA_FROM_DEVICE);
319 if (ret)
320 GM12U320_ERR("dma_buf_end_cpu_access err: %d\n", ret);
321 }
322vunmap:
274
275 if (fb->obj[0]->import_attach) {
276 ret = dma_buf_begin_cpu_access(
277 fb->obj[0]->import_attach->dmabuf, DMA_FROM_DEVICE);
278 if (ret) {
279 GM12U320_ERR("dma_buf_begin_cpu_access err: %d\n", ret);
280 goto vunmap;
281 }

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317
318 if (fb->obj[0]->import_attach) {
319 ret = dma_buf_end_cpu_access(fb->obj[0]->import_attach->dmabuf,
320 DMA_FROM_DEVICE);
321 if (ret)
322 GM12U320_ERR("dma_buf_end_cpu_access err: %d\n", ret);
323 }
324vunmap:
323 drm_gem_shmem_vunmap(fb->obj[0], vaddr);
325 drm_gem_shmem_vunmap(fb->obj[0], &map);
324put_fb:
325 drm_framebuffer_put(fb);
326 gm12u320->fb_update.fb = NULL;
327unlock:
328 mutex_unlock(&gm12u320->fb_update.lock);
329}
330
331static void gm12u320_fb_update_work(struct work_struct *work)

--- 406 unchanged lines hidden --- 		326put_fb:
327 drm_framebuffer_put(fb);
328 gm12u320->fb_update.fb = NULL;
329unlock:
330 mutex_unlock(&gm12u320->fb_update.lock);
331}
332
333static void gm12u320_fb_update_work(struct work_struct *work)

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