Hi Stanimir,
Thanks for your valuable comments.
On 2018-06-04 19:20, Stanimir Varbanov wrote:
Hi Vikash,
Thanks for the patch!
On 1.06.2018 23:26, Vikash Garodia wrote:
Add a new routine which abstracts the TZ call to
Actually the new routine abstracts Venus CPU state, Isn't it?
Yes, its a Venus CPU state controlled by TZ. I can mention it as
an abstraction of venus CPU state.
set the video hardware state.
Signed-off-by: Vikash Garodia <vgarodia@xxxxxxxxxxxxxx>
---
drivers/media/platform/qcom/venus/core.h | 5 +++++
drivers/media/platform/qcom/venus/firmware.c | 28
+++++++++++++++++++++++++++
drivers/media/platform/qcom/venus/firmware.h | 1 +
drivers/media/platform/qcom/venus/hfi_venus.c | 13 ++++---------
4 files changed, 38 insertions(+), 9 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/core.h
b/drivers/media/platform/qcom/venus/core.h
index 85e66e2..e7bfb63 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -35,6 +35,11 @@ struct reg_val {
u32 value;
};
+enum tzbsp_video_state {
+ TZBSP_VIDEO_SUSPEND = 0,
+ TZBSP_VIDEO_RESUME
+};
please move this in firmware.c, for more see below.
+
struct venus_resources {
u64 dma_mask;
const struct freq_tbl *freq_tbl;
diff --git a/drivers/media/platform/qcom/venus/firmware.c
b/drivers/media/platform/qcom/venus/firmware.c
index 7d89b5a..b4664ed 100644
--- a/drivers/media/platform/qcom/venus/firmware.c
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -53,6 +53,34 @@ static void venus_reset_hw(struct venus_core *core)
/* Bring Arm9 out of reset */
writel_relaxed(0, reg_base + WRAPPER_A9SS_SW_RESET);
}
+
+int venus_set_hw_state(enum tzbsp_video_state state, struct
venus_core *core)
can we put this function this way:
venus_set_state(struct venus_core *core, bool on)
so we set the state to On when we are power-up the venus CPU and Off
when we power-down.
by this way we really abstract the state, IMO.
Good point. Will do in similar way.
+{
+ int ret;
+ struct device *dev = core->dev;
+ void __iomem *reg_base = core->base;
just 'base' should be enough.
Infact, comment from Jordan, we can remove it altogether.
+
+ switch (state) {
+ case TZBSP_VIDEO_SUSPEND:
+ if (qcom_scm_is_available())
You really shouldn't rely on this function (see the comment from Bjorn
on first version of this patch series).
I think we have to replace qcom_scm_is_available() with some flag which
is reflecting does the firmware subnode is exist or not. In case it is
not exist the we have to go with TZ scm calls.
As we discussed, will keep it under the check for a valid firmware
device.
We can avoid the extra flag in that way.
+ ret = qcom_scm_set_remote_state(TZBSP_VIDEO_SUSPEND, 0);
+ else
+ writel_relaxed(1, reg_base + WRAPPER_A9SS_SW_RESET);
+ break;
+ case TZBSP_VIDEO_RESUME:
+ if (qcom_scm_is_available())
+ ret = qcom_scm_set_remote_state(TZBSP_VIDEO_RESUME, 0);
+ else
+ venus_reset_hw(core);
+ break;
+ default:
+ dev_err(dev, "invalid state\n");
+ break;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(venus_set_hw_state);
+
regards,
Stan
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