msm: sde: Add v4l2 rotator driver to enable multi-context usecase
Current application interface of fbdev rotator driver has limited
support on multiple concurrent rotator sessions. Using v4l2 m2m
framework will enable concurrent multi-session using standard
v4l2 interface. This will also enable third-party clients to
use rotator service in background mode.
The driver supports same feature set as current fbdev rotator
driver, such as rotation, flip, and scale operation.
CRs-Fixed: 972831
Change-Id: I0bba76f2233c142b5a22451f824df7900ac60afa
Signed-off-by: Alan Kwong <akwong@codeaurora.org>
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>
diff --git a/drivers/media/platform/msm/sde/rotator/sde_rotator_core.h b/drivers/media/platform/msm/sde/rotator/sde_rotator_core.h
index 5052ea1..0aee4f7 100644
--- a/drivers/media/platform/msm/sde/rotator/sde_rotator_core.h
+++ b/drivers/media/platform/msm/sde/rotator/sde_rotator_core.h
@@ -59,9 +59,9 @@
/* use client provided dma buf instead of ion fd */
#define SDE_ROTATION_EXT_DMA_BUF 0x20000
-/*********************************************************************
- *configuration structures
- *********************************************************************/
+/**********************************************************************
+ * configuration structures
+ **********************************************************************/
struct sde_rotation_buf_info {
uint32_t width;
@@ -108,37 +108,37 @@
/* The output buffer for the request */
struct sde_layer_buffer output;
- /*
- * DMA pipe selection for this request by client:
- * 0: DMA pipe 0
- * 1: DMA pipe 1
- * or SDE_ROTATION_HW_ANY if client wants
- * driver to allocate any that is available
- *
- * OR
- *
- * Reserved
- */
+ /*
+ * DMA pipe selection for this request by client:
+ * 0: DMA pipe 0
+ * 1: DMA pipe 1
+ * or SDE_ROTATION_HW_ANY if client wants
+ * driver to allocate any that is available
+ *
+ * OR
+ *
+ * Reserved
+ */
uint32_t pipe_idx;
- /*
- * Write-back block selection for this request by client:
- * 0: Write-back block 0
- * 1: Write-back block 1
- * or SDE_ROTATION_HW_ANY if client wants
- * driver to allocate any that is available
- *
- * OR
- *
- * Priority selection for this request by client:
- * 0: Highest
- * 1..n: Limited by the lowest available priority
- */
+ /*
+ * Write-back block selection for this request by client:
+ * 0: Write-back block 0
+ * 1: Write-back block 1
+ * or SDE_ROTATION_HW_ANY if client wants
+ * driver to allocate any that is available
+ *
+ * OR
+ *
+ * Priority selection for this request by client:
+ * 0: Highest
+ * 1..n: Limited by the lowest available priority
+ */
uint32_t wb_idx;
- /*
- * Sequence ID of this request within the session
- */
+ /*
+ * Sequence ID of this request within the session
+ */
uint32_t sequence_id;
/* Which session ID is this request scheduled on */