gpu: ipu-cpmem: Add ipu_cpmem_get_burstsize()

Adds ipu_cpmem_get_burstsize().

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

2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/ipu-v3/ipu-cpmem.c b/drivers/gpu/ipu-v3/ipu-cpmem.c
index a36c35e04a6d..fcb7dc86167b 100644
--- a/drivers/gpu/ipu-v3/ipu-cpmem.c
+++ b/drivers/gpu/ipu-v3/ipu-cpmem.c
@@ -275,6 +275,12 @@ void ipu_cpmem_set_axi_id(struct ipuv3_channel *ch, u32 id)
 }
 EXPORT_SYMBOL_GPL(ipu_cpmem_set_axi_id);
 
+int ipu_cpmem_get_burstsize(struct ipuv3_channel *ch)
+{
+        return ipu_ch_param_read_field(ch, IPU_FIELD_NPB) + 1;
+}
+EXPORT_SYMBOL_GPL(ipu_cpmem_get_burstsize);
+
 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 69c86585452a..8c4312ddc46c 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -187,6 +187,7 @@ void ipu_cpmem_set_buffer(struct ipuv3_channel *ch, int bufnum, dma_addr_t buf);
 void ipu_cpmem_set_uv_offset(struct ipuv3_channel *ch, u32 u_off, u32 v_off);
 void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride);
 void ipu_cpmem_set_axi_id(struct ipuv3_channel *ch, u32 id);
+int ipu_cpmem_get_burstsize(struct ipuv3_channel *ch);
 void ipu_cpmem_set_burstsize(struct ipuv3_channel *ch, int burstsize);
 void ipu_cpmem_set_block_mode(struct ipuv3_channel *ch);
 void ipu_cpmem_set_rotation(struct ipuv3_channel *ch,