layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/806-dma-0019-dmaengine-fsl-edma-calculate-the-real-count-for-slav.patch b/target/linux/layerscape/patches-5.4/806-dma-0019-dmaengine-fsl-edma-calculate-the-real-count-for-slav.patch
new file mode 100644
index 0000000000..4278711b80
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/806-dma-0019-dmaengine-fsl-edma-calculate-the-real-count-for-slav.patch
@@ -0,0 +1,70 @@
+From 7b126c5fbddf179c7d2c2393100329aa45cd8ac4 Mon Sep 17 00:00:00 2001
+From: Fugang Duan <fugang.duan@nxp.com>
+Date: Fri, 9 Aug 2019 15:14:08 +0800
+Subject: [PATCH] dmaengine: fsl-edma: calculate the real count for slave sg
+
+Calculate the rela count for current slave sg after eDMA stop.
+
+Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
+---
+ drivers/dma/fsl-edma-common.c | 11 ++++++++++-
+ drivers/dma/fsl-edma-common.h |  2 ++
+ drivers/dma/fsl-edma.c        |  1 +
+ 3 files changed, 13 insertions(+), 1 deletion(-)
+
+--- a/drivers/dma/fsl-edma-common.c
++++ b/drivers/dma/fsl-edma-common.c
+@@ -305,6 +305,11 @@ static size_t fsl_edma_desc_residue(stru
+ 	return len;
+ }
+ 
++void fsl_edma_get_realcnt(struct fsl_edma_chan *fsl_chan)
++{
++	fsl_chan->chn_real_count = fsl_edma_desc_residue(fsl_chan, NULL, true);
++}
++
+ enum dma_status fsl_edma_tx_status(struct dma_chan *chan,
+ 		dma_cookie_t cookie, struct dma_tx_state *txstate)
+ {
+@@ -314,8 +319,12 @@ enum dma_status fsl_edma_tx_status(struc
+ 	unsigned long flags;
+ 
+ 	status = dma_cookie_status(chan, cookie, txstate);
+-	if (status == DMA_COMPLETE)
++	if (status == DMA_COMPLETE) {
++		spin_lock_irqsave(&fsl_chan->vchan.lock, flags);
++		txstate->residue = fsl_chan->chn_real_count;
++		spin_unlock_irqrestore(&fsl_chan->vchan.lock, flags);
+ 		return status;
++	}
+ 
+ 	if (!txstate)
+ 		return fsl_chan->status;
+--- a/drivers/dma/fsl-edma-common.h
++++ b/drivers/dma/fsl-edma-common.h
+@@ -126,6 +126,7 @@ struct fsl_edma_chan {
+ 	u32				dma_dev_size;
+ 	enum dma_data_direction		dma_dir;
+ 	char				chan_name[16];
++	u32				chn_real_count;
+ };
+ 
+ struct fsl_edma_desc {
+@@ -229,6 +230,7 @@ int fsl_edma_pause(struct dma_chan *chan
+ int fsl_edma_resume(struct dma_chan *chan);
+ int fsl_edma_slave_config(struct dma_chan *chan,
+ 				 struct dma_slave_config *cfg);
++void fsl_edma_get_realcnt(struct fsl_edma_chan *fsl_chan);
+ enum dma_status fsl_edma_tx_status(struct dma_chan *chan,
+ 		dma_cookie_t cookie, struct dma_tx_state *txstate);
+ struct dma_async_tx_descriptor *fsl_edma_prep_dma_cyclic(
+--- a/drivers/dma/fsl-edma.c
++++ b/drivers/dma/fsl-edma.c
+@@ -46,6 +46,7 @@ static irqreturn_t fsl_edma_tx_handler(i
+ 
+ 			spin_lock(&fsl_chan->vchan.lock);
+ 			if (!fsl_chan->edesc->iscyclic) {
++				fsl_edma_get_realcnt(fsl_chan);
+ 				list_del(&fsl_chan->edesc->vdesc.node);
+ 				vchan_cookie_complete(&fsl_chan->edesc->vdesc);
+ 				fsl_chan->edesc = NULL;