nvidia/tegra-vde/vde.c

62 	int err;
82 		err = -ENOMEM;
86 	err = dma_get_sgtable_attrs(dev, &bo->sgt, bo->dma_cookie,
88 	if (err) {
89 		dev_err(dev, "Failed to get DMA buffer SG table: %d\n", err);
93 	err = dma_map_sgtable(dev, &bo->sgt, bo->dma_dir, bo->dma_attrs);
94 	if (err) {
95 		dev_err(dev, "Failed to map DMA buffer SG table: %d\n", err);
100 		err = tegra_vde_iommu_map(vde, &bo->sgt, &bo->iova, bo->size);
101 		if (err) {
102 			dev_err(dev, "Failed to map DMA buffer IOVA: %d\n", err);
125 	return err;
161 	int err;
164 		err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC);
165 		if (err) {
166 			dev_err(dev, "Failed to power down HW: %d\n", err);
167 			return err;
181 	int err;
183 	err = reset_control_acquire(vde->rst_mc);
184 	if (err) {
185 		dev_err(dev, "Failed to acquire mc reset: %d\n", err);
186 		return err;
189 	err = reset_control_acquire(vde->rst);
190 	if (err) {
191 		dev_err(dev, "Failed to acquire reset: %d\n", err);
196 		err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC,
198 		if (err) {
199 			dev_err(dev, "Failed to power up HW : %d\n", err);
207 		err = clk_prepare_enable(vde->clk);
208 		if (err) {
209 			dev_err(dev, "Failed to enable clock: %d\n", err);
221 	return err;
228 	int irq, err;
277 		err = PTR_ERR(vde->clk);
278 		dev_err(dev, "Could not get VDE clk %d\n", err);
279 		return err;
284 		err = PTR_ERR(vde->rst);
285 		dev_err(dev, "Could not get VDE reset %d\n", err);
286 		return err;
291 		err = PTR_ERR(vde->rst_mc);
292 		dev_err(dev, "Could not get MC reset %d\n", err);
293 		return err;
300 	err = devm_request_irq(dev, irq, tegra_vde_isr, 0,
302 	if (err) {
303 		dev_err(dev, "Could not request IRQ %d\n", err);
304 		return err;
307 	err = devm_tegra_core_dev_init_opp_table_common(dev);
308 	if (err) {
309 		dev_err(dev, "Could initialize OPP table %d\n", err);
310 		return err;
332 	err = tegra_vde_iommu_init(vde);
333 	if (err) {
334 		dev_err(dev, "Failed to initialize IOMMU: %d\n", err);
347 	err = pm_runtime_resume_and_get(dev);
348 	if (err)
353 	err = tegra_vde_alloc_bo(vde, &vde->secure_bo, DMA_FROM_DEVICE, 4096);
354 	if (err) {
355 		dev_err(dev, "Failed to allocate secure BO: %d\n", err);
359 	err = tegra_vde_v4l2_init(vde);
360 	if (err) {
361 		dev_err(dev, "Failed to initialize V4L2: %d\n", err);
379 	return err;
425 	int err;
429 	err = pm_runtime_force_suspend(dev);
430 	if (err < 0)
431 		return err;
439 	int err;
441 	err = pm_runtime_force_resume(dev);
442 	if (err < 0)
443 		return err;