[PATCH 3/5] media: iris: Add IRIS_BSE_HW_CLK handling in power on/off sequence

[Wangao Wang]

On X1P42100 the Iris block has an extra BSE clock. Wire this clock into
the power on/off sequence.

The BSE clock is used to drive the Bin Stream Engine, which is a sub-block
of the video codec hardware responsible for bitstream-level processing. It
is required to be enabled separately from the core clock to ensure proper
codec operation.

Signed-off-by: Wangao Wang <wangao.wang@xxxxxxxxxxxxxxxx>
---
 drivers/media/platform/qcom/iris/iris_vpu_common.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/iris/iris_vpu_common.c b/drivers/media/platform/qcom/iris/iris_vpu_common.c
index 548e5f1727fdb7543f76a1871f17257fa2360733..8f5cfad87b42f52e49fc25bc0b43c7e1a0ccc5e1 100644
--- a/drivers/media/platform/qcom/iris/iris_vpu_common.c
+++ b/drivers/media/platform/qcom/iris/iris_vpu_common.c
@@ -226,6 +226,7 @@ void iris_vpu_power_off_hw(struct iris_core *core)
 	iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN]);
 	iris_disable_unprepare_clock(core, IRIS_HW_AHB_CLK);
 	iris_disable_unprepare_clock(core, IRIS_HW_CLK);
+	iris_disable_unprepare_clock(core, IRIS_BSE_HW_CLK);
 }
 
 void iris_vpu_power_off(struct iris_core *core)
@@ -284,9 +285,13 @@ int iris_vpu_power_on_hw(struct iris_core *core)
 	if (ret)
 		return ret;
 
+	ret = iris_prepare_enable_clock(core, IRIS_BSE_HW_CLK);
+	if (ret && ret != -ENOENT)
+		goto err_disable_power;
+
 	ret = iris_prepare_enable_clock(core, IRIS_HW_CLK);
 	if (ret)
-		goto err_disable_power;
+		goto err_disable_bse_hw_clock;
 
 	ret = iris_prepare_enable_clock(core, IRIS_HW_AHB_CLK);
 	if (ret && ret != -ENOENT)
@@ -302,6 +307,8 @@ int iris_vpu_power_on_hw(struct iris_core *core)
 	iris_disable_unprepare_clock(core, IRIS_HW_AHB_CLK);
 err_disable_hw_clock:
 	iris_disable_unprepare_clock(core, IRIS_HW_CLK);
+err_disable_bse_hw_clock:
+	iris_disable_unprepare_clock(core, IRIS_BSE_HW_CLK);
 err_disable_power:
 	iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN]);
 

-- 
2.43.0