diff options
| -rw-r--r-- | Documentation/arm/OMAP/DSS | 10 | ||||
| -rw-r--r-- | drivers/video/omap2/omapfb/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/video/omap2/omapfb/omapfb-ioctl.c | 14 | ||||
| -rw-r--r-- | drivers/video/omap2/omapfb/omapfb-main.c | 69 | ||||
| -rw-r--r-- | drivers/video/omap2/omapfb/omapfb.h | 5 |
5 files changed, 52 insertions, 47 deletions
diff --git a/Documentation/arm/OMAP/DSS b/Documentation/arm/OMAP/DSS index a564cee..4484e02 100644 --- a/Documentation/arm/OMAP/DSS +++ b/Documentation/arm/OMAP/DSS @@ -285,7 +285,10 @@ FB0 +-- GFX ---- LCD ---- LCD Misc notes ---------- -OMAP FB allocates the framebuffer memory using the OMAP VRAM allocator. +OMAP FB allocates the framebuffer memory using the standard dma allocator. You +can enable Contiguous Memory Allocator (CONFIG_CMA) to improve the dma +allocator, and if CMA is enabled, you use "cma=" kernel parameter to increase +the global memory area for CMA. Using DSI DPLL to generate pixel clock it is possible produce the pixel clock of 86.5MHz (max possible), and with that you get 1280x1024@57 output from DVI. @@ -301,11 +304,6 @@ framebuffer parameters. Kernel boot arguments --------------------- -vram=<size>[,<physaddr>] - - Amount of total VRAM to preallocate and optionally a physical start - memory address. For example, "10M". omapfb allocates memory for - framebuffers from VRAM. - omapfb.mode=<display>:<mode>[,...] - Default video mode for specified displays. For example, "dvi:800x400MR-24@60". See drivers/video/modedb.c. diff --git a/drivers/video/omap2/omapfb/Kconfig b/drivers/video/omap2/omapfb/Kconfig index 4ea17dc..4cb12ce 100644 --- a/drivers/video/omap2/omapfb/Kconfig +++ b/drivers/video/omap2/omapfb/Kconfig @@ -2,7 +2,6 @@ menuconfig FB_OMAP2 tristate "OMAP2+ frame buffer support" depends on FB && OMAP2_DSS && !DRM_OMAP - select OMAP2_VRAM select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3 select FB_CFB_FILLRECT select FB_CFB_COPYAREA diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c index 606b89f..574c170 100644 --- a/drivers/video/omap2/omapfb/omapfb-ioctl.c +++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c @@ -31,7 +31,6 @@ #include <video/omapdss.h> #include <plat/vrfb.h> -#include <plat/vram.h> #include "omapfb.h" @@ -853,14 +852,15 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg) break; case OMAPFB_GET_VRAM_INFO: { - unsigned long vram, free, largest; - DBG("ioctl GET_VRAM_INFO\n"); - omap_vram_get_info(&vram, &free, &largest); - p.vram_info.total = vram; - p.vram_info.free = free; - p.vram_info.largest_free_block = largest; + /* + * We don't have the ability to get this vram info anymore. + * Fill in something that should keep the applications working. + */ + p.vram_info.total = SZ_1M * 64; + p.vram_info.free = SZ_1M * 64; + p.vram_info.largest_free_block = SZ_1M * 64; if (copy_to_user((void __user *)arg, &p.vram_info, sizeof(p.vram_info))) diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c index 16db158..84c1012 100644 --- a/drivers/video/omap2/omapfb/omapfb-main.c +++ b/drivers/video/omap2/omapfb/omapfb-main.c @@ -32,7 +32,6 @@ #include <video/omapdss.h> #include <plat/cpu.h> -#include <plat/vram.h> #include <plat/vrfb.h> #include "omapfb.h" @@ -1336,24 +1335,25 @@ static void omapfb_free_fbmem(struct fb_info *fbi) rg = ofbi->region; - WARN_ON(atomic_read(&rg->map_count)); - - if (rg->paddr) - if (omap_vram_free(rg->paddr, rg->size)) - dev_err(fbdev->dev, "VRAM FREE failed\n"); + if (rg->token == NULL) + return; - if (rg->vaddr) - iounmap(rg->vaddr); + WARN_ON(atomic_read(&rg->map_count)); if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { /* unmap the 0 angle rotation */ if (rg->vrfb.vaddr[0]) { iounmap(rg->vrfb.vaddr[0]); - omap_vrfb_release_ctx(&rg->vrfb); rg->vrfb.vaddr[0] = NULL; } + + omap_vrfb_release_ctx(&rg->vrfb); } + dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle, + &rg->attrs); + + rg->token = NULL; rg->vaddr = NULL; rg->paddr = 0; rg->alloc = 0; @@ -1388,7 +1388,9 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size, struct omapfb_info *ofbi = FB2OFB(fbi); struct omapfb2_device *fbdev = ofbi->fbdev; struct omapfb2_mem_region *rg; - void __iomem *vaddr; + void *token; + DEFINE_DMA_ATTRS(attrs); + dma_addr_t dma_handle; int r; rg = ofbi->region; @@ -1403,42 +1405,43 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size, size = PAGE_ALIGN(size); - if (!paddr) { - DBG("allocating %lu bytes for fb %d\n", size, ofbi->id); - r = omap_vram_alloc(size, &paddr); - } else { - DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr, - ofbi->id); - r = omap_vram_reserve(paddr, size); - } + WARN_ONCE(paddr, + "reserving memory at predefined address not supported\n"); - if (r) { + dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); + + if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) + dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs); + + DBG("allocating %lu bytes for fb %d\n", size, ofbi->id); + + token = dma_alloc_attrs(fbdev->dev, size, &dma_handle, + GFP_KERNEL, &attrs); + + if (token == NULL) { dev_err(fbdev->dev, "failed to allocate framebuffer\n"); return -ENOMEM; } - if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) { - vaddr = ioremap_wc(paddr, size); - - if (!vaddr) { - dev_err(fbdev->dev, "failed to ioremap framebuffer\n"); - omap_vram_free(paddr, size); - return -ENOMEM; - } + DBG("allocated VRAM paddr %lx, vaddr %p\n", + (unsigned long)dma_handle, token); - DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr); - } else { + if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { r = omap_vrfb_request_ctx(&rg->vrfb); if (r) { + dma_free_attrs(fbdev->dev, size, token, dma_handle, + &attrs); dev_err(fbdev->dev, "vrfb create ctx failed\n"); return r; } - - vaddr = NULL; } - rg->paddr = paddr; - rg->vaddr = vaddr; + rg->attrs = attrs; + rg->token = token; + rg->dma_handle = dma_handle; + + rg->paddr = (unsigned long)dma_handle; + rg->vaddr = (void __iomem *)token; rg->size = size; rg->alloc = 1; diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h index 5ced9b3..5f72bf9 100644 --- a/drivers/video/omap2/omapfb/omapfb.h +++ b/drivers/video/omap2/omapfb/omapfb.h @@ -28,6 +28,8 @@ #endif #include <linux/rwsem.h> +#include <linux/dma-attrs.h> +#include <linux/dma-mapping.h> #include <video/omapdss.h> @@ -49,6 +51,9 @@ extern bool omapfb_debug; struct omapfb2_mem_region { int id; + struct dma_attrs attrs; + void *token; + dma_addr_t dma_handle; u32 paddr; void __iomem *vaddr; struct vrfb vrfb; 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