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Commit 458f5884 authored by Andy Gross's avatar Andy Gross Committed by Vinod Koul
Browse files

dmaengine: qcom_bam_dma: Make driver work for BE 



This patch fixes the Qualcomm BAM dmaenging driver to work with big
endian kernels.

Signed-off-by: default avatarAndy Gross <andy.gross@linaro.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 92e963f5

drivers/dma/qcom_bam_dma.c

+11 −8
Original line number Original line Diff line number Diff line
@@ -53,9 +53,9 @@ 
#include "virt-dma.h"

#include "virt-dma.h"





struct bam_desc_hw {

struct bam_desc_hw {

	u32 addr;		/* Buffer physical address */

	__le32 addr;		/* Buffer physical address */

	u16 size;		/* Buffer size in bytes */

	__le16 size;		/* Buffer size in bytes */

	u16 flags;

	__le16 flags;

};

};





#define DESC_FLAG_INT BIT(15)

#define DESC_FLAG_INT BIT(15)
@@ -632,14 +632,15 @@ static struct dma_async_tx_descriptor *bam_prep_slave_sg(struct dma_chan *chan, 
		unsigned int curr_offset = 0;

		unsigned int curr_offset = 0;





		do {

		do {

			desc->addr = sg_dma_address(sg) + curr_offset;

			desc->addr = cpu_to_le32(sg_dma_address(sg) +

						 curr_offset);





			if (remainder > BAM_MAX_DATA_SIZE) {

			if (remainder > BAM_MAX_DATA_SIZE) {

				desc->size = BAM_MAX_DATA_SIZE;

				desc->size = cpu_to_le16(BAM_MAX_DATA_SIZE);

				remainder -= BAM_MAX_DATA_SIZE;

				remainder -= BAM_MAX_DATA_SIZE;

				curr_offset += BAM_MAX_DATA_SIZE;

				curr_offset += BAM_MAX_DATA_SIZE;

			} else {

			} else {

				desc->size = remainder;

				desc->size = cpu_to_le16(remainder);

				remainder = 0;

				remainder = 0;

			}

			}
@@ -915,9 +916,11 @@ static void bam_start_dma(struct bam_chan *bchan) 




	/* set any special flags on the last descriptor */

	/* set any special flags on the last descriptor */

	if (async_desc->num_desc == async_desc->xfer_len)

	if (async_desc->num_desc == async_desc->xfer_len)

		desc[async_desc->xfer_len - 1].flags = async_desc->flags;

		desc[async_desc->xfer_len - 1].flags =

					cpu_to_le16(async_desc->flags);

	else

	else

		desc[async_desc->xfer_len - 1].flags |= DESC_FLAG_INT;

		desc[async_desc->xfer_len - 1].flags |=

					cpu_to_le16(DESC_FLAG_INT);





	if (bchan->tail + async_desc->xfer_len > MAX_DESCRIPTORS) {

	if (bchan->tail + async_desc->xfer_len > MAX_DESCRIPTORS) {

		u32 partial = MAX_DESCRIPTORS - bchan->tail;

		u32 partial = MAX_DESCRIPTORS - bchan->tail;