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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-19 21:47:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-19 21:47:18 +0300
commita0d3c7c5c07cfbe00ab89438ddf82482f5a99422 (patch)
tree560def78af776bef5d0d0202580c4be0fc6219c6 /include
parentec67b14c1be4ebe4cf08f06746a8d0313ab85432 (diff)
parentf9114a54c1d828abbe87ac446a2da49d9720203f (diff)
downloadlinux-a0d3c7c5c07cfbe00ab89438ddf82482f5a99422.tar.xz
Merge tag 'dmaengine-4.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul: "This time round the update brings in following changes: - new tegra driver for ADMA device - support for Xilinx AXI Direct Memory Access Engine and Xilinx AXI Central Direct Memory Access Engine and few updates to this driver - new cyclic capability to sun6i and few updates - slave-sg support in bcm2835 - updates to many drivers like designware, hsu, mv_xor, pxa, edma, qcom_hidma & bam" * tag 'dmaengine-4.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (84 commits) dmaengine: ioatdma: disable relaxed ordering for ioatdma dmaengine: of_dma: approximate an average distribution dmaengine: core: Use IS_ENABLED() instead of checking for built-in or module dmaengine: edma: Re-evaluate errors when ccerr is triggered w/o error event dmaengine: qcom_hidma: add support for object hierarchy dmaengine: qcom_hidma: add debugfs hooks dmaengine: qcom_hidma: implement lower level hardware interface dmaengine: vdma: Add clock support Documentation: DT: vdma: Add clock support for dmas dmaengine: vdma: Add config structure to differentiate dmas MAINTAINERS: Update Tegra DMA maintainers dmaengine: tegra-adma: Add support for Tegra210 ADMA Documentation: DT: Add binding documentation for NVIDIA ADMA dmaengine: vdma: Add Support for Xilinx AXI Central Direct Memory Access Engine Documentation: DT: vdma: update binding doc for AXI CDMA dmaengine: vdma: Add Support for Xilinx AXI Direct Memory Access Engine Documentation: DT: vdma: update binding doc for AXI DMA dmaengine: vdma: Rename xilinx_vdma_ prefix to xilinx_dma dmaengine: slave means at least one of DMA_SLAVE, DMA_CYCLIC dmaengine: mv_xor: Allow selecting mv_xor for mvebu only compatible SoC ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/amba/pl08x.h2
-rw-r--r--include/linux/dma/dw.h5
-rw-r--r--include/linux/dma/xilinx_dma.h14
-rw-r--r--include/linux/dmaengine.h20
-rw-r--r--include/linux/platform_data/dma-dw.h12
5 files changed, 44 insertions, 9 deletions
diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h
index 10fe2a211c2e..27e9ec8778eb 100644
--- a/include/linux/amba/pl08x.h
+++ b/include/linux/amba/pl08x.h
@@ -86,7 +86,7 @@ struct pl08x_channel_data {
* @mem_buses: buses which memory can be accessed from: PL08X_AHB1 | PL08X_AHB2
*/
struct pl08x_platform_data {
- const struct pl08x_channel_data *slave_channels;
+ struct pl08x_channel_data *slave_channels;
unsigned int num_slave_channels;
struct pl08x_channel_data memcpy_channel;
int (*get_xfer_signal)(const struct pl08x_channel_data *);
diff --git a/include/linux/dma/dw.h b/include/linux/dma/dw.h
index 71456442ebe3..f2e538aaddad 100644
--- a/include/linux/dma/dw.h
+++ b/include/linux/dma/dw.h
@@ -27,6 +27,7 @@ struct dw_dma;
* @regs: memory mapped I/O space
* @clk: hclk clock
* @dw: struct dw_dma that is filed by dw_dma_probe()
+ * @pdata: pointer to platform data
*/
struct dw_dma_chip {
struct device *dev;
@@ -34,10 +35,12 @@ struct dw_dma_chip {
void __iomem *regs;
struct clk *clk;
struct dw_dma *dw;
+
+ const struct dw_dma_platform_data *pdata;
};
/* Export to the platform drivers */
-int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata);
+int dw_dma_probe(struct dw_dma_chip *chip);
int dw_dma_remove(struct dw_dma_chip *chip);
/* DMA API extensions */
diff --git a/include/linux/dma/xilinx_dma.h b/include/linux/dma/xilinx_dma.h
index 34b98f276ed0..3ae300052553 100644
--- a/include/linux/dma/xilinx_dma.h
+++ b/include/linux/dma/xilinx_dma.h
@@ -41,6 +41,20 @@ struct xilinx_vdma_config {
int ext_fsync;
};
+/**
+ * enum xdma_ip_type: DMA IP type.
+ *
+ * XDMA_TYPE_AXIDMA: Axi dma ip.
+ * XDMA_TYPE_CDMA: Axi cdma ip.
+ * XDMA_TYPE_VDMA: Axi vdma ip.
+ *
+ */
+enum xdma_ip_type {
+ XDMA_TYPE_AXIDMA = 0,
+ XDMA_TYPE_CDMA,
+ XDMA_TYPE_VDMA,
+};
+
int xilinx_vdma_channel_set_config(struct dma_chan *dchan,
struct xilinx_vdma_config *cfg);
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 017433712833..30de0197263a 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -804,6 +804,9 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
sg_dma_address(&sg) = buf;
sg_dma_len(&sg) = len;
+ if (!chan || !chan->device || !chan->device->device_prep_slave_sg)
+ return NULL;
+
return chan->device->device_prep_slave_sg(chan, &sg, 1,
dir, flags, NULL);
}
@@ -812,6 +815,9 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len,
enum dma_transfer_direction dir, unsigned long flags)
{
+ if (!chan || !chan->device || !chan->device->device_prep_slave_sg)
+ return NULL;
+
return chan->device->device_prep_slave_sg(chan, sgl, sg_len,
dir, flags, NULL);
}
@@ -823,6 +829,9 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_rio_sg(
enum dma_transfer_direction dir, unsigned long flags,
struct rio_dma_ext *rio_ext)
{
+ if (!chan || !chan->device || !chan->device->device_prep_slave_sg)
+ return NULL;
+
return chan->device->device_prep_slave_sg(chan, sgl, sg_len,
dir, flags, rio_ext);
}
@@ -833,6 +842,9 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic(
size_t period_len, enum dma_transfer_direction dir,
unsigned long flags)
{
+ if (!chan || !chan->device || !chan->device->device_prep_dma_cyclic)
+ return NULL;
+
return chan->device->device_prep_dma_cyclic(chan, buf_addr, buf_len,
period_len, dir, flags);
}
@@ -841,6 +853,9 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma(
struct dma_chan *chan, struct dma_interleaved_template *xt,
unsigned long flags)
{
+ if (!chan || !chan->device || !chan->device->device_prep_interleaved_dma)
+ return NULL;
+
return chan->device->device_prep_interleaved_dma(chan, xt, flags);
}
@@ -848,7 +863,7 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memset(
struct dma_chan *chan, dma_addr_t dest, int value, size_t len,
unsigned long flags)
{
- if (!chan || !chan->device)
+ if (!chan || !chan->device || !chan->device->device_prep_dma_memset)
return NULL;
return chan->device->device_prep_dma_memset(chan, dest, value,
@@ -861,6 +876,9 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
struct scatterlist *src_sg, unsigned int src_nents,
unsigned long flags)
{
+ if (!chan || !chan->device || !chan->device->device_prep_dma_sg)
+ return NULL;
+
return chan->device->device_prep_dma_sg(chan, dst_sg, dst_nents,
src_sg, src_nents, flags);
}
diff --git a/include/linux/platform_data/dma-dw.h b/include/linux/platform_data/dma-dw.h
index 03b6095d3b18..d15d8ba8cc24 100644
--- a/include/linux/platform_data/dma-dw.h
+++ b/include/linux/platform_data/dma-dw.h
@@ -21,15 +21,15 @@
* @dma_dev: required DMA master device
* @src_id: src request line
* @dst_id: dst request line
- * @src_master: src master for transfers on allocated channel.
- * @dst_master: dest master for transfers on allocated channel.
+ * @m_master: memory master for transfers on allocated channel
+ * @p_master: peripheral master for transfers on allocated channel
*/
struct dw_dma_slave {
struct device *dma_dev;
u8 src_id;
u8 dst_id;
- u8 src_master;
- u8 dst_master;
+ u8 m_master;
+ u8 p_master;
};
/**
@@ -43,7 +43,7 @@ struct dw_dma_slave {
* @block_size: Maximum block size supported by the controller
* @nr_masters: Number of AHB masters supported by the controller
* @data_width: Maximum data width supported by hardware per AHB master
- * (0 - 8bits, 1 - 16bits, ..., 5 - 256bits)
+ * (in bytes, power of 2)
*/
struct dw_dma_platform_data {
unsigned int nr_channels;
@@ -55,7 +55,7 @@ struct dw_dma_platform_data {
#define CHAN_PRIORITY_ASCENDING 0 /* chan0 highest */
#define CHAN_PRIORITY_DESCENDING 1 /* chan7 highest */
unsigned char chan_priority;
- unsigned short block_size;
+ unsigned int block_size;
unsigned char nr_masters;
unsigned char data_width[DW_DMA_MAX_NR_MASTERS];
};