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media: venus: core: Fix msm8996 frequency table

Message ID 1567591618-22467-1-git-send-email-loic.poulain@linaro.org
State Accepted
Commit c690435ed07901737e5c007a65ec59f53b33eb71
Headers show
Series media: venus: core: Fix msm8996 frequency table | expand

Commit Message

Loic Poulain Sept. 4, 2019, 10:06 a.m. UTC 
In downstream driver, there are two frequency tables defined,
one for the encoder and one for the decoder:

/* Encoders /
<972000 490000000 0x55555555>, / 4k UHD @ 30 /
<489600 320000000 0x55555555>, / 1080p @ 60 /
<244800 150000000 0x55555555>, / 1080p @ 30 /
<108000 75000000 0x55555555>, / 720p @ 30 */

/* Decoders /
<1944000 490000000 0xffffffff>, / 4k UHD @ 60 /
< 972000 320000000 0xffffffff>, / 4k UHD @ 30 /
< 489600 150000000 0xffffffff>, / 1080p @ 60 /
< 244800 75000000 0xffffffff>; / 1080p @ 30 */

It shows that encoder always needs a higher clock than decoder.

In current venus driver, the unified frequency table is aligned
with the downstream decoder table which causes performance issues
in decoding scenarios. Fix that by aligning frequency table on
worst case (encoding).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>

---
 drivers/media/platform/qcom/venus/core.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

-- 
2.7.4
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Patch

diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
index 0acc757..1e80689 100644
--- a/drivers/media/platform/qcom/venus/core.c
+++ b/drivers/media/platform/qcom/venus/core.c
@@ -427,10 +427,11 @@  static const struct venus_resources msm8916_res = {
 };
 
 static const struct freq_tbl msm8996_freq_table[] = {
-	{ 1944000, 490000000 },	/* 4k UHD @ 60 */
-	{  972000, 320000000 },	/* 4k UHD @ 30 */
-	{  489600, 150000000 },	/* 1080p @ 60 */
-	{  244800,  75000000 },	/* 1080p @ 30 */
+	{ 1944000, 490000000 },	/* 4k UHD @ 60 (decode only) */
+	{  972000, 490000000 },	/* 4k UHD @ 30 */
+	{  489600, 320000000 },	/* 1080p @ 60 */
+	{  244800, 150000000 },	/* 1080p @ 30 */
+	{  108000,  75000000 },	/* 720p @ 30 */
 };
 
 static const struct reg_val msm8996_reg_preset[] = {