gpu: ipu-cpmem: Add ipu_cpmem_set_axi_id()

Adds ipu_cpmem_set_axi_id() to set which AXI bus master the channel
will use to transfer data onto AXI bus.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

2 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/ipu-v3/ipu-cpmem.c b/drivers/gpu/ipu-v3/ipu-cpmem.c
index 28adf39e4041..2d1b3761f14c 100644
--- a/drivers/gpu/ipu-v3/ipu-cpmem.c
+++ b/drivers/gpu/ipu-v3/ipu-cpmem.c
@@ -254,6 +254,13 @@ void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride)
 };
 EXPORT_SYMBOL_GPL(ipu_cpmem_interlaced_scan);
 
+void ipu_cpmem_set_axi_id(struct ipuv3_channel *ch, u32 id)
+{
+        id &= 0x3;
+        ipu_ch_param_write_field(ch, IPU_FIELD_ID, id);
+}
+EXPORT_SYMBOL_GPL(ipu_cpmem_set_axi_id);
+
 void ipu_cpmem_set_burstsize(struct ipuv3_channel *ch, int burstsize)
 {
         ipu_ch_param_write_field(ch, IPU_FIELD_NPB, burstsize - 1);
diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index d2cc207985d8..f30c06871db7 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -194,6 +194,7 @@ void ipu_cpmem_set_stride(struct ipuv3_channel *ch, int stride);
 void ipu_cpmem_set_high_priority(struct ipuv3_channel *ch);
 void ipu_cpmem_set_buffer(struct ipuv3_channel *ch, int bufnum, dma_addr_t buf);
 void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride);
+void ipu_cpmem_set_axi_id(struct ipuv3_channel *ch, u32 id);
 void ipu_cpmem_set_burstsize(struct ipuv3_channel *ch, int burstsize);
 void ipu_cpmem_set_block_mode(struct ipuv3_channel *ch);
 int ipu_cpmem_set_format_rgb(struct ipuv3_channel *ch,