diff options
Diffstat (limited to 'drivers/gpu/drm/tegra')
| -rw-r--r-- | drivers/gpu/drm/tegra/dpaux.c | 39 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/gem.c | 25 |
3 files changed, 36 insertions, 40 deletions
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index d6b55e3e3716..07b26972f487 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -56,15 +56,14 @@ static inline struct tegra_dpaux *work_to_dpaux(struct work_struct *work) return container_of(work, struct tegra_dpaux, work); } -static inline unsigned long tegra_dpaux_readl(struct tegra_dpaux *dpaux, - unsigned long offset) +static inline u32 tegra_dpaux_readl(struct tegra_dpaux *dpaux, + unsigned long offset) { return readl(dpaux->regs + (offset << 2)); } static inline void tegra_dpaux_writel(struct tegra_dpaux *dpaux, - unsigned long value, - unsigned long offset) + u32 value, unsigned long offset) { writel(value, dpaux->regs + (offset << 2)); } @@ -72,34 +71,32 @@ static inline void tegra_dpaux_writel(struct tegra_dpaux *dpaux, static void tegra_dpaux_write_fifo(struct tegra_dpaux *dpaux, const u8 *buffer, size_t size) { - unsigned long offset = DPAUX_DP_AUXDATA_WRITE(0); size_t i, j; - for (i = 0; i < size; i += 4) { - size_t num = min_t(size_t, size - i, 4); - unsigned long value = 0; + for (i = 0; i < DIV_ROUND_UP(size, 4); i++) { + size_t num = min_t(size_t, size - i * 4, 4); + u32 value = 0; for (j = 0; j < num; j++) - value |= buffer[i + j] << (j * 8); + value |= buffer[i * 4 + j] << (j * 8); - tegra_dpaux_writel(dpaux, value, offset++); + tegra_dpaux_writel(dpaux, value, DPAUX_DP_AUXDATA_WRITE(i)); } } static void tegra_dpaux_read_fifo(struct tegra_dpaux *dpaux, u8 *buffer, size_t size) { - unsigned long offset = DPAUX_DP_AUXDATA_READ(0); size_t i, j; - for (i = 0; i < size; i += 4) { - size_t num = min_t(size_t, size - i, 4); - unsigned long value; + for (i = 0; i < DIV_ROUND_UP(size, 4); i++) { + size_t num = min_t(size_t, size - i * 4, 4); + u32 value; - value = tegra_dpaux_readl(dpaux, offset++); + value = tegra_dpaux_readl(dpaux, DPAUX_DP_AUXDATA_READ(i)); for (j = 0; j < num; j++) - buffer[i + j] = value >> (j * 8); + buffer[i * 4 + j] = value >> (j * 8); } } @@ -250,7 +247,7 @@ static irqreturn_t tegra_dpaux_irq(int irq, void *data) { struct tegra_dpaux *dpaux = data; irqreturn_t ret = IRQ_HANDLED; - unsigned long value; + u32 value; /* clear interrupts */ value = tegra_dpaux_readl(dpaux, DPAUX_INTR_AUX); @@ -273,7 +270,7 @@ static int tegra_dpaux_probe(struct platform_device *pdev) { struct tegra_dpaux *dpaux; struct resource *regs; - unsigned long value; + u32 value; int err; dpaux = devm_kzalloc(&pdev->dev, sizeof(*dpaux), GFP_KERNEL); @@ -465,7 +462,7 @@ int tegra_dpaux_detach(struct tegra_dpaux *dpaux) enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux) { - unsigned long value; + u32 value; value = tegra_dpaux_readl(dpaux, DPAUX_DP_AUXSTAT); @@ -477,7 +474,7 @@ enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux) int tegra_dpaux_enable(struct tegra_dpaux *dpaux) { - unsigned long value; + u32 value; value = DPAUX_HYBRID_PADCTL_AUX_CMH(2) | DPAUX_HYBRID_PADCTL_AUX_DRVZ(4) | @@ -495,7 +492,7 @@ int tegra_dpaux_enable(struct tegra_dpaux *dpaux) int tegra_dpaux_disable(struct tegra_dpaux *dpaux) { - unsigned long value; + u32 value; value = tegra_dpaux_readl(dpaux, DPAUX_HYBRID_SPARE); value |= DPAUX_HYBRID_SPARE_PAD_POWER_DOWN; diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index bfad15a913a0..427f50c6803c 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -124,14 +124,22 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) return -ENOMEM; if (iommu_present(&platform_bus_type)) { + struct iommu_domain_geometry *geometry; + u64 start, end; + tegra->domain = iommu_domain_alloc(&platform_bus_type); if (!tegra->domain) { err = -ENOMEM; goto free; } - DRM_DEBUG("IOMMU context initialized\n"); - drm_mm_init(&tegra->mm, 0, SZ_2G); + geometry = &tegra->domain->geometry; + start = geometry->aperture_start; + end = geometry->aperture_end; + + DRM_DEBUG("IOMMU context initialized (aperture: %#llx-%#llx)\n", + start, end); + drm_mm_init(&tegra->mm, start, end - start + 1); } mutex_init(&tegra->clients_lock); diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 1217272a51f2..01e16e146bfe 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -189,7 +189,6 @@ static void tegra_bo_free(struct drm_device *drm, struct tegra_bo *bo) static int tegra_bo_get_pages(struct drm_device *drm, struct tegra_bo *bo) { struct scatterlist *s; - struct sg_table *sgt; unsigned int i; bo->pages = drm_gem_get_pages(&bo->gem); @@ -198,36 +197,28 @@ static int tegra_bo_get_pages(struct drm_device *drm, struct tegra_bo *bo) bo->num_pages = bo->gem.size >> PAGE_SHIFT; - sgt = drm_prime_pages_to_sg(bo->pages, bo->num_pages); - if (IS_ERR(sgt)) + bo->sgt = drm_prime_pages_to_sg(bo->pages, bo->num_pages); + if (IS_ERR(bo->sgt)) goto put_pages; /* - * Fake up the SG table so that dma_map_sg() can be used to flush the - * pages associated with it. Note that this relies on the fact that - * the DMA API doesn't hook into IOMMU on Tegra, therefore mapping is - * only cache maintenance. + * Fake up the SG table so that dma_sync_sg_for_device() can be used + * to flush the pages associated with it. * * TODO: Replace this by drm_clflash_sg() once it can be implemented * without relying on symbols that are not exported. */ - for_each_sg(sgt->sgl, s, sgt->nents, i) + for_each_sg(bo->sgt->sgl, s, bo->sgt->nents, i) sg_dma_address(s) = sg_phys(s); - if (dma_map_sg(drm->dev, sgt->sgl, sgt->nents, DMA_TO_DEVICE) == 0) - goto release_sgt; - - bo->sgt = sgt; + dma_sync_sg_for_device(drm->dev, bo->sgt->sgl, bo->sgt->nents, + DMA_TO_DEVICE); return 0; -release_sgt: - sg_free_table(sgt); - kfree(sgt); - sgt = ERR_PTR(-ENOMEM); put_pages: drm_gem_put_pages(&bo->gem, bo->pages, false, false); - return PTR_ERR(sgt); + return PTR_ERR(bo->sgt); } static int tegra_bo_alloc(struct drm_device *drm, struct tegra_bo *bo) |