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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 15:13:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 15:13:55 -0700
commit9e3a25dc992dd9f3170fb643bdd95da5ca9c5576 (patch)
treef636ae59fa83c83e837a6668b2693175a6e39f3a /drivers/video
parent9787aed57dd33ba5c15a713c2c50e78baeb5052d (diff)
parent15ffe5e1acf5fe1512e98b20702e46ce9f25e2f7 (diff)
downloadlinux-9e3a25dc992dd9f3170fb643bdd95da5ca9c5576.tar.bz2
Merge tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig: - move the USB special case that bounced DMA through a device bar into the USB code instead of handling it in the common DMA code (Laurentiu Tudor and Fredrik Noring) - don't dip into the global CMA pool for single page allocations (Nicolin Chen) - fix a crash when allocating memory for the atomic pool failed during boot (Florian Fainelli) - move support for MIPS-style uncached segments to the common code and use that for MIPS and nios2 (me) - make support for DMA_ATTR_NON_CONSISTENT and DMA_ATTR_NO_KERNEL_MAPPING generic (me) - convert nds32 to the generic remapping allocator (me) * tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping: (29 commits) dma-mapping: mark dma_alloc_need_uncached as __always_inline MIPS: only select ARCH_HAS_UNCACHED_SEGMENT for non-coherent platforms usb: host: Fix excessive alignment restriction for local memory allocations lib/genalloc.c: Add algorithm, align and zeroed family of DMA allocators nios2: use the generic uncached segment support in dma-direct nds32: use the generic remapping allocator for coherent DMA allocations arc: use the generic remapping allocator for coherent DMA allocations dma-direct: handle DMA_ATTR_NO_KERNEL_MAPPING in common code dma-direct: handle DMA_ATTR_NON_CONSISTENT in common code dma-mapping: add a dma_alloc_need_uncached helper openrisc: remove the partial DMA_ATTR_NON_CONSISTENT support arc: remove the partial DMA_ATTR_NON_CONSISTENT support arm-nommu: remove the partial DMA_ATTR_NON_CONSISTENT support ARM: dma-mapping: allow larger DMA mask than supported dma-mapping: truncate dma masks to what dma_addr_t can hold iommu/dma: Apply dma_{alloc,free}_contiguous functions dma-remap: Avoid de-referencing NULL atomic_pool MIPS: use the generic uncached segment support in dma-direct dma-direct: provide generic support for uncached kernel segments au1100fb: fix DMA API abuse ...
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/au1100fb.c24
-rw-r--r--drivers/video/fbdev/au1100fb.h1
2 files changed, 5 insertions, 20 deletions
diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c
index 0adf0683cf08..99941ae1f3a1 100644
--- a/drivers/video/fbdev/au1100fb.c
+++ b/drivers/video/fbdev/au1100fb.c
@@ -340,14 +340,12 @@ int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
*/
int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
{
- struct au1100fb_device *fbdev;
-
- fbdev = to_au1100fb_device(fbi);
+ struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6
- return vm_iomap_memory(vma, fbdev->fb_phys, fbdev->fb_len);
+ return dma_mmap_coherent(fbdev->dev, vma, fbdev->fb_mem, fbdev->fb_phys,
+ fbdev->fb_len);
}
static struct fb_ops au1100fb_ops =
@@ -412,7 +410,6 @@ static int au1100fb_drv_probe(struct platform_device *dev)
{
struct au1100fb_device *fbdev;
struct resource *regs_res;
- unsigned long page;
struct clk *c;
/* Allocate new device private */
@@ -424,6 +421,7 @@ static int au1100fb_drv_probe(struct platform_device *dev)
goto failed;
platform_set_drvdata(dev, (void *)fbdev);
+ fbdev->dev = &dev->dev;
/* Allocate region for our registers and map them */
regs_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
@@ -472,20 +470,6 @@ static int au1100fb_drv_probe(struct platform_device *dev)
au1100fb_fix.smem_start = fbdev->fb_phys;
au1100fb_fix.smem_len = fbdev->fb_len;
- /*
- * Set page reserved so that mmap will work. This is necessary
- * since we'll be remapping normal memory.
- */
- for (page = (unsigned long)fbdev->fb_mem;
- page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len);
- page += PAGE_SIZE) {
-#ifdef CONFIG_DMA_NONCOHERENT
- SetPageReserved(virt_to_page(CAC_ADDR((void *)page)));
-#else
- SetPageReserved(virt_to_page(page));
-#endif
- }
-
print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
diff --git a/drivers/video/fbdev/au1100fb.h b/drivers/video/fbdev/au1100fb.h
index 9af19939a9c6..e7239bceefd3 100644
--- a/drivers/video/fbdev/au1100fb.h
+++ b/drivers/video/fbdev/au1100fb.h
@@ -110,6 +110,7 @@ struct au1100fb_device {
dma_addr_t fb_phys;
int panel_idx;
struct clk *lcdclk;
+ struct device *dev;
};
/********************************************************************/