[PATCH 02/11] dmaengine/drivers: add context parameter for DMA_SLAVE and DMA_CYCLIC
From: Alexandre Bounine
Date: Thu Feb 02 2012 - 16:34:05 EST
Add new context parameter to DMA drivers that implement DMA_SLAVE
and DMA_CYCLIC interfaces.
Currently existing drivers simply ignore this parameter.
Signed-off-by: Alexandre Bounine <alexandre.bounine@xxxxxxx>
Cc: Jassi Brar <jaswinder.singh@xxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxxxxxx>
Cc: Viresh Kumar <viresh.kumar@xxxxxx>
Cc: Li Yang <leoli@xxxxxxxxxxxxx>
Cc: Zhang Wei <zw@xxxxxxxxxxxxx>
Cc: Barry Song <baohua.song@xxxxxxx>
Cc: Srinidhi Kasagar <srinidhi.kasagar@xxxxxxxxxxxxxx>
Cc: Narayanan G <narayanan.gopalakrishnan@xxxxxxxxxxxxxx>
Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Cc: Rabin Vincent <rabin.vincent@xxxxxxxxxxxxxx>
Cc: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
Cc: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Cc: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/plat-nomadik/include/plat/ste_dma40.h | 2 +-
drivers/dma/amba-pl08x.c | 2 +-
drivers/dma/at_hdmac.c | 7 +++++--
drivers/dma/coh901318.c | 2 +-
drivers/dma/dw_dmac.c | 2 +-
drivers/dma/ep93xx_dma.c | 6 ++++--
drivers/dma/fsldma.c | 4 +++-
drivers/dma/imx-dma.c | 5 +++--
drivers/dma/imx-sdma.c | 5 +++--
drivers/dma/intel_mid_dma.c | 3 ++-
drivers/dma/ipu/ipu_idmac.c | 3 ++-
drivers/dma/mxs-dma.c | 5 +++--
drivers/dma/pch_dma.c | 3 ++-
drivers/dma/pl330.c | 5 +++--
drivers/dma/shdma.c | 3 ++-
drivers/dma/sirf-dma.c | 2 +-
drivers/dma/ste_dma40.c | 5 +++--
drivers/dma/timb_dma.c | 3 ++-
drivers/dma/txx9dmac.c | 2 +-
19 files changed, 43 insertions(+), 26 deletions(-)
diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index fd0ee84..908a934 100644
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -201,7 +201,7 @@ dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
sg.length = size;
return chan->device->device_prep_slave_sg(chan, &sg, 1,
- direction, flags);
+ direction, flags, NULL);
}
#else
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 8a28158..776f9e2 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1326,7 +1326,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy(
static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
struct pl08x_driver_data *pl08x = plchan->host;
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 97f87b2..4ca746a 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -659,11 +659,12 @@ err_desc_get:
* @sg_len: number of entries in @scatterlist
* @direction: DMA direction
* @flags: tx descriptor status flags
+ * @context: transaction-specific context
*/
static struct dma_async_tx_descriptor *
atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma_slave *atslave = chan->private;
@@ -860,10 +861,12 @@ atc_dma_cyclic_fill_desc(struct at_dma_slave *atslave, struct at_desc *desc,
* @buf_len: total number of bytes for the entire buffer
* @period_len: number of bytes for each period
* @direction: transfer direction, to or from device
+ * @context: transaction-specific context
*/
static struct dma_async_tx_descriptor *
atc_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
- size_t period_len, enum dma_transfer_direction direction)
+ size_t period_len, enum dma_transfer_direction direction,
+ void *context)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma_slave *atslave = chan->private;
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index d65a718..f42b54e 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -1035,7 +1035,7 @@ coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
static struct dma_async_tx_descriptor *
coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
struct coh901318_lli *lli;
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 9b592b0..058bddf 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -731,7 +731,7 @@ err_desc_get:
static struct dma_async_tx_descriptor *
dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct dw_dma_chan *dwc = to_dw_dma_chan(chan);
struct dw_dma_slave *dws = chan->private;
diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
index 59e7a96..613c9ff 100644
--- a/drivers/dma/ep93xx_dma.c
+++ b/drivers/dma/ep93xx_dma.c
@@ -983,13 +983,14 @@ fail:
* @sg_len: number of entries in @sgl
* @dir: direction of tha DMA transfer
* @flags: flags for the descriptor
+ * @context: transaction-specific context
*
* Returns a valid DMA descriptor or %NULL in case of failure.
*/
static struct dma_async_tx_descriptor *
ep93xx_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction dir,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
struct ep93xx_dma_desc *desc, *first;
@@ -1056,6 +1057,7 @@ fail:
* @buf_len: length of the buffer (in bytes)
* @period_len: lenght of a single period
* @dir: direction of the operation
+ * @context: operation-specific context
*
* Prepares a descriptor for cyclic DMA operation. This means that once the
* descriptor is submitted, we will be submitting in a @period_len sized
@@ -1068,7 +1070,7 @@ fail:
static struct dma_async_tx_descriptor *
ep93xx_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction dir)
+ enum dma_transfer_direction dir, void *context)
{
struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
struct ep93xx_dma_desc *desc, *first;
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index b98070c..1cbc934 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -765,6 +765,7 @@ fail:
* @sg_len: number of entries in @scatterlist
* @direction: DMA direction
* @flags: DMAEngine flags
+ * @context: transaction-specific context
*
* Prepare a set of descriptors for a DMA_SLAVE transaction. Following the
* DMA_SLAVE API, this gets the device-specific information from the
@@ -772,7 +773,8 @@ fail:
*/
static struct dma_async_tx_descriptor *fsl_dma_prep_slave_sg(
struct dma_chan *dchan, struct scatterlist *sgl, unsigned int sg_len,
- enum dma_transfer_direction direction, unsigned long flags)
+ enum dma_transfer_direction direction, unsigned long flags,
+ void *context)
{
/*
* This operation is not supported on the Freescale DMA controller
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index e4383ee..42d5dc5 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -225,7 +225,7 @@ static void imxdma_free_chan_resources(struct dma_chan *chan)
static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
struct scatterlist *sg;
@@ -271,7 +271,8 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
- size_t period_len, enum dma_transfer_direction direction)
+ size_t period_len, enum dma_transfer_direction direction,
+ void *context)
{
struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
struct imxdma_engine *imxdma = imxdmac->imxdma;
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index a8af379..21b1ab7 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -917,7 +917,7 @@ static void sdma_free_chan_resources(struct dma_chan *chan)
static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct sdma_channel *sdmac = to_sdma_chan(chan);
struct sdma_engine *sdma = sdmac->sdma;
@@ -1015,7 +1015,8 @@ err_out:
static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
- size_t period_len, enum dma_transfer_direction direction)
+ size_t period_len, enum dma_transfer_direction direction,
+ void *context)
{
struct sdma_channel *sdmac = to_sdma_chan(chan);
struct sdma_engine *sdma = sdmac->sdma;
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 74f70aa..3bfc225 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -732,13 +732,14 @@ err_desc_get:
* @sg_len: length of sg txn
* @direction: DMA transfer dirtn
* @flags: DMA flags
+ * @context: txn-specific context
*
* Prepares LLI based periphral transfer
*/
static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct intel_mid_dma_chan *midc = NULL;
struct intel_mid_dma_slave *mids = NULL;
diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
index 6212b16..aadd57c 100644
--- a/drivers/dma/ipu/ipu_idmac.c
+++ b/drivers/dma/ipu/ipu_idmac.c
@@ -1341,7 +1341,8 @@ static void ipu_gc_tasklet(unsigned long arg)
/* Allocate and initialise a transfer descriptor. */
static struct dma_async_tx_descriptor *idmac_prep_slave_sg(struct dma_chan *chan,
struct scatterlist *sgl, unsigned int sg_len,
- enum dma_transfer_direction direction, unsigned long tx_flags)
+ enum dma_transfer_direction direction, unsigned long tx_flags,
+ void *context)
{
struct idmac_channel *ichan = to_idmac_chan(chan);
struct idmac_tx_desc *desc = NULL;
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index b06cd4c..3e65974 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -352,7 +352,7 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long append)
+ unsigned long append, void *context)
{
struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
@@ -447,7 +447,8 @@ err_out:
static struct dma_async_tx_descriptor *mxs_dma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
- size_t period_len, enum dma_transfer_direction direction)
+ size_t period_len, enum dma_transfer_direction direction,
+ void *context)
{
struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 823f581..7ad3d79 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -607,7 +607,8 @@ static void pd_issue_pending(struct dma_chan *chan)
static struct dma_async_tx_descriptor *pd_prep_slave_sg(struct dma_chan *chan,
struct scatterlist *sgl, unsigned int sg_len,
- enum dma_transfer_direction direction, unsigned long flags)
+ enum dma_transfer_direction direction,
+ unsigned long flags, void *context)
{
struct pch_dma_chan *pd_chan = to_pd_chan(chan);
struct pch_dma_slave *pd_slave = chan->private;
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index b8ec03e..1e8dee6 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -621,7 +621,8 @@ static inline int get_burst_len(struct dma_pl330_desc *desc, size_t len)
static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t len,
- size_t period_len, enum dma_transfer_direction direction)
+ size_t period_len, enum dma_transfer_direction direction,
+ void *context)
{
struct dma_pl330_desc *desc;
struct dma_pl330_chan *pch = to_pchan(chan);
@@ -711,7 +712,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
static struct dma_async_tx_descriptor *
pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flg)
+ unsigned long flg, void *context)
{
struct dma_pl330_desc *first, *desc = NULL;
struct dma_pl330_chan *pch = to_pchan(chan);
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 54043cd..8b15e06 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -673,7 +673,8 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_memcpy(
static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len,
- enum dma_transfer_direction direction, unsigned long flags)
+ enum dma_transfer_direction direction, unsigned long flags,
+ void *context)
{
struct sh_dmae_slave *param;
struct sh_dmae_chan *sh_chan;
diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
index 2333810..b899a86 100644
--- a/drivers/dma/sirf-dma.c
+++ b/drivers/dma/sirf-dma.c
@@ -497,7 +497,7 @@ err_dir:
static struct dma_async_tx_descriptor *
sirfsoc_dma_prep_cyclic(struct dma_chan *chan, dma_addr_t addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction direction)
+ enum dma_transfer_direction direction, void *context)
{
struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
struct sirfsoc_dma_desc *sdesc = NULL;
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index cc5ecbc..3cbf78e 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2299,7 +2299,8 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
struct scatterlist *sgl,
unsigned int sg_len,
enum dma_transfer_direction direction,
- unsigned long dma_flags)
+ unsigned long dma_flags,
+ void *context)
{
if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV)
return NULL;
@@ -2310,7 +2311,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
static struct dma_async_tx_descriptor *
dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction direction)
+ enum dma_transfer_direction direction, void *context)
{
unsigned int periods = buf_len / period_len;
struct dma_async_tx_descriptor *txd;
diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c
index a6f9c16..a4c61ed 100644
--- a/drivers/dma/timb_dma.c
+++ b/drivers/dma/timb_dma.c
@@ -558,7 +558,8 @@ static void td_issue_pending(struct dma_chan *chan)
static struct dma_async_tx_descriptor *td_prep_slave_sg(struct dma_chan *chan,
struct scatterlist *sgl, unsigned int sg_len,
- enum dma_transfer_direction direction, unsigned long flags)
+ enum dma_transfer_direction direction, unsigned long flags,
+ void *context)
{
struct timb_dma_chan *td_chan =
container_of(chan, struct timb_dma_chan, chan);
diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index 6122c36..fa66ebb 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -846,7 +846,7 @@ txx9dmac_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
static struct dma_async_tx_descriptor *
txx9dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct txx9dmac_chan *dc = to_txx9dmac_chan(chan);
struct txx9dmac_dev *ddev = dc->ddev;
--
1.7.8.4
--
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