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Subject: media: meson: vdec: hevc: Refactor vdec_hevc_start and vdec_hevc_stop
Author: Ricardo Ribalda <riba...@chromium.org>
Date: Fri Aug 16 12:32:04 2024 +0000
Make a new function __vdec_hevc_start(), that does all the
initialization, except the clock initialization for G12A and SM1.
Factor out all the stop logic, except the clk_disable_unprepare(), to a
new function __vdec_hevc_stop. This allows vdec_hevc_start() to
explicitly celan-out the clock during the error-path.
The following smatch warnings are fixed:
drivers/staging/media/meson/vdec/vdec_hevc.c:227 vdec_hevc_start() warn:
'core->vdec_hevc_clk' from clk_prepare_enable() not released on lines: 227.
drivers/staging/media/meson/vdec/vdec_hevc.c:227 vdec_hevc_start() warn:
'core->vdec_hevcf_clk' from clk_prepare_enable() not released on lines: 227.
Signed-off-by: Ricardo Ribalda <riba...@chromium.org>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/staging/media/meson/vdec/vdec_hevc.c | 43 +++++++++++++++++++++-------
1 file changed, 32 insertions(+), 11 deletions(-)
---
diff --git a/drivers/staging/media/meson/vdec/vdec_hevc.c
b/drivers/staging/media/meson/vdec/vdec_hevc.c
index afced435c907..1939c47def58 100644
--- a/drivers/staging/media/meson/vdec/vdec_hevc.c
+++ b/drivers/staging/media/meson/vdec/vdec_hevc.c
@@ -110,7 +110,7 @@ static u32 vdec_hevc_vififo_level(struct amvdec_session
*sess)
return readl_relaxed(sess->core->dos_base + HEVC_STREAM_LEVEL);
}
-static int vdec_hevc_stop(struct amvdec_session *sess)
+static void __vdec_hevc_stop(struct amvdec_session *sess)
{
struct amvdec_core *core = sess->core;
struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
@@ -142,6 +142,13 @@ static int vdec_hevc_stop(struct amvdec_session *sess)
else
regmap_update_bits(core->regmap_ao, AO_RTI_GEN_PWR_SLEEP0,
GEN_PWR_VDEC_HEVC, GEN_PWR_VDEC_HEVC);
+}
+
+static int vdec_hevc_stop(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+
+ __vdec_hevc_stop(sess);
clk_disable_unprepare(core->vdec_hevc_clk);
if (core->platform->revision == VDEC_REVISION_G12A ||
@@ -151,20 +158,12 @@ static int vdec_hevc_stop(struct amvdec_session *sess)
return 0;
}
-static int vdec_hevc_start(struct amvdec_session *sess)
+static int __vdec_hevc_start(struct amvdec_session *sess)
{
int ret;
struct amvdec_core *core = sess->core;
struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
- if (core->platform->revision == VDEC_REVISION_G12A ||
- core->platform->revision == VDEC_REVISION_SM1) {
- clk_set_rate(core->vdec_hevcf_clk, 666666666);
- ret = clk_prepare_enable(core->vdec_hevcf_clk);
- if (ret)
- return ret;
- }
-
clk_set_rate(core->vdec_hevc_clk, 666666666);
ret = clk_prepare_enable(core->vdec_hevc_clk);
if (ret) {
@@ -223,10 +222,32 @@ static int vdec_hevc_start(struct amvdec_session *sess)
return 0;
stop:
- vdec_hevc_stop(sess);
+ __vdec_hevc_stop(sess);
+ clk_disable_unprepare(core->vdec_hevc_clk);
return ret;
}
+static int vdec_hevc_start(struct amvdec_session *sess)
+{
+ struct amvdec_core *core = sess->core;
+ int ret;
+
+ if (core->platform->revision == VDEC_REVISION_G12A ||
+ core->platform->revision == VDEC_REVISION_SM1) {
+ clk_set_rate(core->vdec_hevcf_clk, 666666666);
+ ret = clk_prepare_enable(core->vdec_hevcf_clk);
+ if (ret)
+ return ret;
+
+ ret = __vdec_hevc_start(sess);
+ if (ret)
+ clk_disable_unprepare(core->vdec_hevcf_clk);
+ return ret;
+ }
+
+ return __vdec_hevc_start(sess);
+}
+
struct amvdec_ops vdec_hevc_ops = {
.start = vdec_hevc_start,
.stop = vdec_hevc_stop,
