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authorÁlvaro Fernández Rojas <noltari@gmail.com>2019-08-09 19:50:30 +0200
committerÁlvaro Fernández Rojas <noltari@gmail.com>2019-08-27 11:10:01 +0200
commit2340c646e6a5da658e114be2f721ff90853588d4 (patch)
treedf9744d2344e71e8c5d1b75c3e1528bc474313fe /target/linux/brcm2708/patches-4.19/950-0335-bcm2835-dma-Add-support-for-per-channel-flags.patch
parent81d0da118694feb874f992093063a2852285d194 (diff)
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brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0335-bcm2835-dma-Add-support-for-per-channel-flags.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0335-bcm2835-dma-Add-support-for-per-channel-flags.patch48
1 files changed, 0 insertions, 48 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0335-bcm2835-dma-Add-support-for-per-channel-flags.patch b/target/linux/brcm2708/patches-4.19/950-0335-bcm2835-dma-Add-support-for-per-channel-flags.patch
deleted file mode 100644
index 4a36e32adb..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0335-bcm2835-dma-Add-support-for-per-channel-flags.patch
+++ /dev/null
@@ -1,48 +0,0 @@
-From 579a73d009e45d7078246d01e5f311a79d04d291 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Fri, 20 Jul 2018 22:03:41 +0100
-Subject: [PATCH 335/725] bcm2835-dma: Add support for per-channel flags
-
-Add the ability to interpret the high bits of the dreq specifier as
-flags to be included in the DMA_CS register. The motivation for this
-change is the ability to set the DISDEBUG flag for SD card transfers
-to avoid corruption when using the VPU debugger.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- drivers/dma/bcm2835-dma.c | 10 ++++++++--
- 1 file changed, 8 insertions(+), 2 deletions(-)
-
---- a/drivers/dma/bcm2835-dma.c
-+++ b/drivers/dma/bcm2835-dma.c
-@@ -146,6 +146,10 @@ struct bcm2835_desc {
- #define BCM2835_DMA_S_DREQ BIT(10) /* enable SREQ for source */
- #define BCM2835_DMA_S_IGNORE BIT(11) /* ignore source reads - read 0 */
- #define BCM2835_DMA_BURST_LENGTH(x) ((x & 15) << 12)
-+#define BCM2835_DMA_CS_FLAGS(x) (x & (BCM2835_DMA_PRIORITY(15) | \
-+ BCM2835_DMA_PANIC_PRIORITY(15) | \
-+ BCM2835_DMA_WAIT_FOR_WRITES | \
-+ BCM2835_DMA_DIS_DEBUG))
- #define BCM2835_DMA_PER_MAP(x) ((x & 31) << 16) /* REQ source */
- #define BCM2835_DMA_WAIT(x) ((x & 31) << 21) /* add DMA-wait cycles */
- #define BCM2835_DMA_NO_WIDE_BURSTS BIT(26) /* no 2 beat write bursts */
-@@ -461,7 +465,8 @@ static void bcm2835_dma_start_desc(struc
- c->desc = d = to_bcm2835_dma_desc(&vd->tx);
-
- writel(d->cb_list[0].paddr, c->chan_base + BCM2835_DMA_ADDR);
-- writel(BCM2835_DMA_ACTIVE, c->chan_base + BCM2835_DMA_CS);
-+ writel(BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
-+ c->chan_base + BCM2835_DMA_CS);
- }
-
- static irqreturn_t bcm2835_dma_callback(int irq, void *data)
-@@ -488,7 +493,8 @@ static irqreturn_t bcm2835_dma_callback(
- * if this IRQ handler is threaded.) If the channel is finished, it
- * will remain idle despite the ACTIVE flag being set.
- */
-- writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE,
-+ writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE |
-+ BCM2835_DMA_CS_FLAGS(c->dreq),
- c->chan_base + BCM2835_DMA_CS);
-
- d = c->desc;