msm: mdss: Program rotator block size from device tree
The block size for the rotator's internal scratch memory can
vary based on the target. Add support for programming the block
size from the device tree.
Change-Id: Ic73808078ee69c8101e742d9c18f51f835f3d88c
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
diff --git a/Documentation/devicetree/bindings/fb/mdss-mdp.txt b/Documentation/devicetree/bindings/fb/mdss-mdp.txt
index 6b95625..497471a 100644
--- a/Documentation/devicetree/bindings/fb/mdss-mdp.txt
+++ b/Documentation/devicetree/bindings/fb/mdss-mdp.txt
@@ -99,6 +99,9 @@
settings used to setup MDSS QoS for best performance.
The key used should be offset from "mdp_phys" register
defined in reg property.
+- qcom,mdss-rot-block-size: The size of a memory block (in pixels) to be used
+ by the rotator. If this property is not specified,
+ then a default value of 128 pixels would be used.
Optional subnodes:
Child nodes representing the frame buffer virtual devices.
@@ -131,6 +134,7 @@
qcom,mdss-pipe-rgb-fetch-id = <16 17 18>;
qcom,mdss-pipe-dma-fetch-id = <10 13>;
qcom,mdss-smp-data = <22 4096>;
+ qcom,mdss-rot-block-size = <64>;
qcom,mdss-ctl-off = <0x00000600 0x00000700 0x00000800
0x00000900 0x0000A00>;
diff --git a/drivers/video/msm/mdss/mdss.h b/drivers/video/msm/mdss/mdss.h
index dd41638..c847ee6 100644
--- a/drivers/video/msm/mdss/mdss.h
+++ b/drivers/video/msm/mdss/mdss.h
@@ -90,6 +90,8 @@
u32 smp_mb_cnt;
u32 smp_mb_size;
+ u32 rot_block_size;
+
struct mdss_hw_settings *hw_settings;
struct mdss_mdp_pipe *vig_pipes;
diff --git a/drivers/video/msm/mdss/mdss_mdp.c b/drivers/video/msm/mdss/mdss_mdp.c
index 0e68e3d..217ac18 100644
--- a/drivers/video/msm/mdss/mdss_mdp.c
+++ b/drivers/video/msm/mdss/mdss_mdp.c
@@ -127,6 +127,7 @@
static int mdss_mdp_parse_dt_prop_len(struct platform_device *pdev,
char *prop_name);
static int mdss_mdp_parse_dt_smp(struct platform_device *pdev);
+static int mdss_mdp_parse_dt_misc(struct platform_device *pdev);
int mdss_mdp_alloc_fb_mem(struct msm_fb_data_type *mfd,
u32 size, u32 *phys, void **virt)
@@ -1100,6 +1101,12 @@
return rc;
}
+ rc = mdss_mdp_parse_dt_misc(pdev);
+ if (rc) {
+ pr_err("Error in device tree : misc\n");
+ return rc;
+ }
+
return 0;
}
@@ -1384,6 +1391,19 @@
return rc;
}
+static int mdss_mdp_parse_dt_misc(struct platform_device *pdev)
+{
+ struct mdss_data_type *mdata = platform_get_drvdata(pdev);
+ u32 data;
+ int rc;
+
+ rc = of_property_read_u32(pdev->dev.of_node, "qcom,mdss-rot-block-size",
+ &data);
+ mdata->rot_block_size = (!rc ? data : 128);
+
+ return 0;
+}
+
static int mdss_mdp_parse_dt_handler(struct platform_device *pdev,
char *prop_name, u32 *offsets, int len)
{
diff --git a/drivers/video/msm/mdss/mdss_mdp_intf_writeback.c b/drivers/video/msm/mdss/mdss_mdp_intf_writeback.c
index c6b6e3f..b7b3c23 100644
--- a/drivers/video/msm/mdss/mdss_mdp_intf_writeback.c
+++ b/drivers/video/msm/mdss/mdss_mdp_intf_writeback.c
@@ -17,8 +17,6 @@
#include "mdss_mdp.h"
#include "mdss_mdp_rotator.h"
-#define ROT_BLK_SIZE 128
-
enum mdss_mdp_writeback_type {
MDSS_MDP_WRITEBACK_TYPE_ROTATOR,
MDSS_MDP_WRITEBACK_TYPE_LINE,
@@ -251,7 +249,7 @@
pr_debug("rot setup wb_num=%d\n", ctx->wb_num);
ctx->opmode = BIT(6); /* ROT EN */
- if (ROT_BLK_SIZE == 128)
+ if (ctl->mdata->rot_block_size == 128)
ctx->opmode |= BIT(4); /* block size 128 */
ctx->opmode |= rot->bwc_mode;