brcm2708: update linux 4.4 patches to latest version

As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0393-dmaengine-bcm2835-add-additional-defines-for-DMA-reg.patch b/target/linux/brcm2708/patches-4.4/0393-dmaengine-bcm2835-add-additional-defines-for-DMA-reg.patch
new file mode 100644
index 0000000000..1a3c44e2ff
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0393-dmaengine-bcm2835-add-additional-defines-for-DMA-reg.patch
@@ -0,0 +1,93 @@
+From 2fe3ede60d3b88bb94ee1a100b5e771567db0962 Mon Sep 17 00:00:00 2001
+From: Martin Sperl <kernel@martin.sperl.org>
+Date: Wed, 16 Mar 2016 12:24:57 -0700
+Subject: [PATCH] dmaengine: bcm2835: add additional defines for DMA-registers
+
+Add additional defines describing the DMA registers
+as well as adding some more documentation to those registers.
+
+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 | 57 ++++++++++++++++++++++++++++++++++++++++-------
+ 1 file changed, 49 insertions(+), 8 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -97,26 +97,67 @@ struct bcm2835_desc {
+ 
+ #define BCM2835_DMA_CS		0x00
+ #define BCM2835_DMA_ADDR	0x04
++#define BCM2835_DMA_TI		0x08
+ #define BCM2835_DMA_SOURCE_AD	0x0c
+ #define BCM2835_DMA_DEST_AD	0x10
+-#define BCM2835_DMA_NEXTCB	0x1C
++#define BCM2835_DMA_LEN		0x14
++#define BCM2835_DMA_STRIDE	0x18
++#define BCM2835_DMA_NEXTCB	0x1c
++#define BCM2835_DMA_DEBUG	0x20
+ 
+ /* DMA CS Control and Status bits */
+-#define BCM2835_DMA_ACTIVE	BIT(0)
+-#define BCM2835_DMA_INT	BIT(2)
++#define BCM2835_DMA_ACTIVE	BIT(0)  /* activate the DMA */
++#define BCM2835_DMA_END		BIT(1)  /* current CB has ended */
++#define BCM2835_DMA_INT		BIT(2)  /* interrupt status */
++#define BCM2835_DMA_DREQ	BIT(3)  /* DREQ state */
+ #define BCM2835_DMA_ISPAUSED	BIT(4)  /* Pause requested or not active */
+ #define BCM2835_DMA_ISHELD	BIT(5)  /* Is held by DREQ flow control */
+-#define BCM2835_DMA_ERR	BIT(8)
++#define BCM2835_DMA_WAITING_FOR_WRITES BIT(6) /* waiting for last
++					       * AXI-write to ack
++					       */
++#define BCM2835_DMA_ERR		BIT(8)
++#define BCM2835_DMA_PRIORITY(x) ((x & 15) << 16) /* AXI priority */
++#define BCM2835_DMA_PANIC_PRIORITY(x) ((x & 15) << 20) /* panic priority */
++/* current value of TI.BCM2835_DMA_WAIT_RESP */
++#define BCM2835_DMA_WAIT_FOR_WRITES BIT(28)
++#define BCM2835_DMA_DIS_DEBUG	BIT(29) /* disable debug pause signal */
+ #define BCM2835_DMA_ABORT	BIT(30) /* Stop current CB, go to next, WO */
+ #define BCM2835_DMA_RESET	BIT(31) /* WO, self clearing */
+ 
++/* Transfer information bits - also bcm2835_cb.info field */
+ #define BCM2835_DMA_INT_EN	BIT(0)
++#define BCM2835_DMA_TDMODE	BIT(1) /* 2D-Mode */
++#define BCM2835_DMA_WAIT_RESP	BIT(3) /* wait for AXI-write to be acked */
+ #define BCM2835_DMA_D_INC	BIT(4)
+-#define BCM2835_DMA_D_DREQ	BIT(6)
++#define BCM2835_DMA_D_WIDTH	BIT(5) /* 128bit writes if set */
++#define BCM2835_DMA_D_DREQ	BIT(6) /* enable DREQ for destination */
++#define BCM2835_DMA_D_IGNORE	BIT(7) /* ignore destination writes */
+ #define BCM2835_DMA_S_INC	BIT(8)
+-#define BCM2835_DMA_S_DREQ	BIT(10)
++#define BCM2835_DMA_S_WIDTH	BIT(9) /* 128bit writes if set */
++#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_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 */
+ 
+-#define BCM2835_DMA_PER_MAP(x)	((x) << 16)
++/* debug register bits */
++#define BCM2835_DMA_DEBUG_LAST_NOT_SET_ERR	BIT(0)
++#define BCM2835_DMA_DEBUG_FIFO_ERR		BIT(1)
++#define BCM2835_DMA_DEBUG_READ_ERR		BIT(2)
++#define BCM2835_DMA_DEBUG_OUTSTANDING_WRITES_SHIFT 4
++#define BCM2835_DMA_DEBUG_OUTSTANDING_WRITES_BITS 4
++#define BCM2835_DMA_DEBUG_ID_SHIFT		16
++#define BCM2835_DMA_DEBUG_ID_BITS		9
++#define BCM2835_DMA_DEBUG_STATE_SHIFT		16
++#define BCM2835_DMA_DEBUG_STATE_BITS		9
++#define BCM2835_DMA_DEBUG_VERSION_SHIFT		25
++#define BCM2835_DMA_DEBUG_VERSION_BITS		3
++#define BCM2835_DMA_DEBUG_LITE			BIT(28)
++
++/* shared registers for all dma channels */
++#define BCM2835_DMA_INT_STATUS         0xfe0
++#define BCM2835_DMA_ENABLE             0xff0
+ 
+ #define BCM2835_DMA_DATA_TYPE_S8	1
+ #define BCM2835_DMA_DATA_TYPE_S16	2