[PATCH v5 2/5] media: iris: Add hardware power on/off ops for X1P42100

[Wangao Wang <wangao.wang@oss.qualcomm.com>]

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.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Wangao Wang <wangao.wang@oss.qualcomm.com>
---
 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..281b1f54cb962dedbfb0ec96ed3a5aab99b50eb8 100644
--- a/drivers/media/platform/qcom/iris/iris_vpu_common.c
+++ b/drivers/media/platform/qcom/iris/iris_vpu_common.c
@@ -224,6 +224,7 @@ void iris_vpu_power_off_hw(struct iris_core *core)
 {
 	dev_pm_genpd_set_hwmode(core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN], false);
 	iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN]);
+	iris_disable_unprepare_clock(core, IRIS_BSE_HW_CLK);
 	iris_disable_unprepare_clock(core, IRIS_HW_AHB_CLK);
 	iris_disable_unprepare_clock(core, IRIS_HW_CLK);
 }
@@ -292,12 +293,18 @@ int iris_vpu_power_on_hw(struct iris_core *core)
 	if (ret && ret != -ENOENT)
 		goto err_disable_hw_clock;
 
+	ret = iris_prepare_enable_clock(core, IRIS_BSE_HW_CLK);
+	if (ret && ret != -ENOENT)
+		goto err_disable_hw_ahb_clock;
+
 	ret = dev_pm_genpd_set_hwmode(core->pmdomain_tbl->pd_devs[IRIS_HW_POWER_DOMAIN], true);
 	if (ret)
-		goto err_disable_hw_ahb_clock;
+		goto err_disable_bse_hw_clock;
 
 	return 0;
 
+err_disable_bse_hw_clock:
+	iris_disable_unprepare_clock(core, IRIS_BSE_HW_CLK);
 err_disable_hw_ahb_clock:
 	iris_disable_unprepare_clock(core, IRIS_HW_AHB_CLK);
 err_disable_hw_clock:

-- 
2.43.0