diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0392-dmaengine-bcm2835-remove-unnecessary-masking-of-dma-.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0392-dmaengine-bcm2835-remove-unnecessary-masking-of-dma-.patch | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0392-dmaengine-bcm2835-remove-unnecessary-masking-of-dma-.patch b/target/linux/brcm2708/patches-4.4/0392-dmaengine-bcm2835-remove-unnecessary-masking-of-dma-.patch deleted file mode 100644 index 632b697427..0000000000 --- a/target/linux/brcm2708/patches-4.4/0392-dmaengine-bcm2835-remove-unnecessary-masking-of-dma-.patch +++ /dev/null @@ -1,56 +0,0 @@ -From 4373ba9e686948c9188a594f63ecb57569ff972b Mon Sep 17 00:00:00 2001 -From: Martin Sperl <kernel@martin.sperl.org> -Date: Wed, 16 Mar 2016 12:24:56 -0700 -Subject: [PATCH] dmaengine: bcm2835: remove unnecessary masking of dma - channels - -The original patch contained 3 dma channels that were masked out. - -These - as far as research and discussions show - are a -artefacts remaining from the downstream legacy dma-api. - -Right now down-stream still includes a legacy api used only -in a single (downstream only) driver (bcm2708_fb) that requires -2D DMA for speedup (DMA-channel 0). -Formerly the sd-card support driver also was using this legacy -api (DMA-channel 2), but since has been moved over to use -dmaengine directly. - -The DMA-channel 3 is already masked out in the devicetree in -the default property "brcm,dma-channel-mask = <0x7f35>;" - -So we can remove the whole masking of DMA channels. - -Signed-off-by: Martin Sperl <kernel@martin.sperl.org> -Reviewed-by: Eric Anholt <eric@anholt.net> -Signed-off-by: Eric Anholt <eric@anholt.net> -Signed-off-by: Vinod Koul <vinod.koul@intel.com> ---- - drivers/dma/bcm2835-dma.c | 9 --------- - 1 file changed, 9 deletions(-) - ---- a/drivers/dma/bcm2835-dma.c -+++ b/drivers/dma/bcm2835-dma.c -@@ -123,9 +123,6 @@ struct bcm2835_desc { - #define BCM2835_DMA_DATA_TYPE_S32 4 - #define BCM2835_DMA_DATA_TYPE_S128 16 - --#define BCM2835_DMA_BULK_MASK BIT(0) --#define BCM2835_DMA_FIQ_MASK (BIT(2) | BIT(3)) -- - /* Valid only for channels 0 - 14, 15 has its own base address */ - #define BCM2835_DMA_CHAN(n) ((n) << 8) /* Base address */ - #define BCM2835_DMA_CHANIO(base, n) ((base) + BCM2835_DMA_CHAN(n)) -@@ -641,12 +638,6 @@ static int bcm2835_dma_probe(struct plat - goto err_no_dma; - } - -- /* -- * Do not use the FIQ and BULK channels, -- * because they are used by the GPU. -- */ -- chans_available &= ~(BCM2835_DMA_FIQ_MASK | BCM2835_DMA_BULK_MASK); -- - for (i = 0; i < pdev->num_resources; i++) { - irq = platform_get_irq(pdev, i); - if (irq < 0) |