[PATCH v3 18/23] media: iris: Add a comment to explain usage of MBPS

From: Dikshita Agarwal
Date: Thu May 01 2025 - 15:19:44 EST


Add a comment to explain usage of MBPS and define a macro for 8K
resolution for better readability

Acked-by: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
Signed-off-by: Dikshita Agarwal <quic_dikshita@xxxxxxxxxxx>
---
drivers/media/platform/qcom/iris/iris_platform_common.h | 2 ++
drivers/media/platform/qcom/iris/iris_platform_gen2.c | 4 ++--
drivers/media/platform/qcom/iris/iris_platform_sm8250.c | 2 +-
3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h b/drivers/media/platform/qcom/iris/iris_platform_common.h
index 1dab276431c7..3e0ae87526a0 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_common.h
+++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
@@ -21,6 +21,7 @@ struct iris_inst;
#define DEFAULT_MAX_HOST_BUF_COUNT 64
#define DEFAULT_MAX_HOST_BURST_BUF_COUNT 256
#define DEFAULT_FPS 30
+#define NUM_MBS_8K ((8192 * 4352) / 256)

enum stage_type {
STAGE_1 = 1,
@@ -172,6 +173,7 @@ struct iris_platform_data {
struct ubwc_config_data *ubwc_config;
u32 num_vpp_pipe;
u32 max_session_count;
+ /* max number of macroblocks per frame supported */
u32 max_core_mbpf;
const u32 *input_config_params;
unsigned int input_config_params_size;
diff --git a/drivers/media/platform/qcom/iris/iris_platform_gen2.c b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
index 1e69ba15db0f..deb7037e8e86 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_gen2.c
+++ b/drivers/media/platform/qcom/iris/iris_platform_gen2.c
@@ -248,7 +248,7 @@ struct iris_platform_data sm8550_data = {
.ubwc_config = &ubwc_config_sm8550,
.num_vpp_pipe = 4,
.max_session_count = 16,
- .max_core_mbpf = ((8192 * 4352) / 256) * 2,
+ .max_core_mbpf = NUM_MBS_8K * 2,
.input_config_params =
sm8550_vdec_input_config_params,
.input_config_params_size =
@@ -308,7 +308,7 @@ struct iris_platform_data sm8650_data = {
.ubwc_config = &ubwc_config_sm8550,
.num_vpp_pipe = 4,
.max_session_count = 16,
- .max_core_mbpf = ((8192 * 4352) / 256) * 2,
+ .max_core_mbpf = NUM_MBS_8K * 2,
.input_config_params =
sm8550_vdec_input_config_params,
.input_config_params_size =
diff --git a/drivers/media/platform/qcom/iris/iris_platform_sm8250.c b/drivers/media/platform/qcom/iris/iris_platform_sm8250.c
index 543fa2661539..8183e4e95fa4 100644
--- a/drivers/media/platform/qcom/iris/iris_platform_sm8250.c
+++ b/drivers/media/platform/qcom/iris/iris_platform_sm8250.c
@@ -127,7 +127,7 @@ struct iris_platform_data sm8250_data = {
.hw_response_timeout = HW_RESPONSE_TIMEOUT_VALUE,
.num_vpp_pipe = 4,
.max_session_count = 16,
- .max_core_mbpf = (8192 * 4352) / 256,
+ .max_core_mbpf = NUM_MBS_8K,
.input_config_params =
sm8250_vdec_input_config_param_default,
.input_config_params_size =

--
2.34.1