| Message ID | 20230907164410.36651-16-bryan.odonoghue@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: qcom: camss: Add parameter passing to remove several outstanding bugs | expand |
On 7.09.2023 18:44, Bryan O'Donoghue wrote: > We can move vfe_disable() into a common routine in the core VFE file > provided we make wm_stop() a VFE specific callback. > > The callback is required to capture the case where VFE 17x currently isn't > VC enabled where as VFE 480 is. > > Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > --- Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> Konrad
On 8.09.2023 12:02, Konrad Dybcio wrote: > On 7.09.2023 18:44, Bryan O'Donoghue wrote: >> We can move vfe_disable() into a common routine in the core VFE file >> provided we make wm_stop() a VFE specific callback. >> >> The callback is required to capture the case where VFE 17x currently isn't >> VC enabled where as VFE 480 is. >> >> Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> >> --- > Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> > > Konrad Actually there's ret = vfe_reset(vfe); return ret; which could just be return vfe_reset(vfe); Konrad
On 08/09/2023 11:04, Konrad Dybcio wrote: > On 8.09.2023 12:02, Konrad Dybcio wrote: >> On 7.09.2023 18:44, Bryan O'Donoghue wrote: >>> We can move vfe_disable() into a common routine in the core VFE file >>> provided we make wm_stop() a VFE specific callback. >>> >>> The callback is required to capture the case where VFE 17x currently isn't >>> VC enabled where as VFE 480 is. >>> >>> Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> >>> --- >> Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> >> >> Konrad > Actually there's > > ret = vfe_reset(vfe); > > return ret; > > > which could just be > > return vfe_reset(vfe); > > > Konrad On purpose. I prefer the ret = ; return ret; pattern since it makes it easier / less work to ret = fn(); if (ret) goto error; error: return ret; --- bod
On 8.09.2023 12:21, Bryan O'Donoghue wrote: > On 08/09/2023 11:04, Konrad Dybcio wrote: >> On 8.09.2023 12:02, Konrad Dybcio wrote: >>> On 7.09.2023 18:44, Bryan O'Donoghue wrote: >>>> We can move vfe_disable() into a common routine in the core VFE file >>>> provided we make wm_stop() a VFE specific callback. >>>> >>>> The callback is required to capture the case where VFE 17x currently isn't >>>> VC enabled where as VFE 480 is. >>>> >>>> Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >>>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> >>>> --- >>> Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> >>> >>> Konrad >> Actually there's >> >> ret = vfe_reset(vfe); >> >> return ret; >> >> >> which could just be >> >> return vfe_reset(vfe); >> >> >> Konrad > > On purpose. > > I prefer the ret = ; return ret; pattern since it makes it easier / less work to > > ret = fn(); > if (ret) > goto error; > > error: > return ret; There's no error label in vfe_disable_output Konrad
On 08/09/2023 11:24, Konrad Dybcio wrote: > On 8.09.2023 12:21, Bryan O'Donoghue wrote: >> On 08/09/2023 11:04, Konrad Dybcio wrote: >>> On 8.09.2023 12:02, Konrad Dybcio wrote: >>>> On 7.09.2023 18:44, Bryan O'Donoghue wrote: >>>>> We can move vfe_disable() into a common routine in the core VFE file >>>>> provided we make wm_stop() a VFE specific callback. >>>>> >>>>> The callback is required to capture the case where VFE 17x currently isn't >>>>> VC enabled where as VFE 480 is. >>>>> >>>>> Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >>>>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> >>>>> --- >>>> Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> >>>> >>>> Konrad >>> Actually there's >>> >>> ret = vfe_reset(vfe); >>> >>> return ret; >>> >>> >>> which could just be >>> >>> return vfe_reset(vfe); >>> >>> >>> Konrad >> >> On purpose. >> >> I prefer the ret = ; return ret; pattern since it makes it easier / less work to >> >> ret = fn(); >> if (ret) >> goto error; >> >> error: >> return ret; > There's no error label in vfe_disable_output > > Konrad No there is not. Its a pattern I use to make adding jump labels easier later on. Just like you use the pattern of appending "," to aggregate initialisation. --- bod
On 08/09/2023 12:36, Bryan O'Donoghue wrote: > On 08/09/2023 11:24, Konrad Dybcio wrote: >> On 8.09.2023 12:21, Bryan O'Donoghue wrote: >>> On 08/09/2023 11:04, Konrad Dybcio wrote: >>>> On 8.09.2023 12:02, Konrad Dybcio wrote: >>>>> On 7.09.2023 18:44, Bryan O'Donoghue wrote: >>>>>> We can move vfe_disable() into a common routine in the core VFE file >>>>>> provided we make wm_stop() a VFE specific callback. >>>>>> >>>>>> The callback is required to capture the case where VFE 17x currently isn't >>>>>> VC enabled where as VFE 480 is. >>>>>> >>>>>> Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> >>>>>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> >>>>>> --- >>>>> Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> >>>>> >>>>> Konrad >>>> Actually there's >>>> >>>> ret = vfe_reset(vfe); >>>> >>>> return ret; >>>> >>>> >>>> which could just be >>>> >>>> return vfe_reset(vfe); >>>> >>>> >>>> Konrad >>> >>> On purpose. >>> >>> I prefer the ret = ; return ret; pattern since it makes it easier / less work to >>> >>> ret = fn(); >>> if (ret) >>> goto error; >>> >>> error: >>> return ret; >> There's no error label in vfe_disable_output >> >> Konrad > > No there is not. Its a pattern I use to make adding jump labels easier later on. This adds a bunch of extra lines just in case something might happen in the future. That is generally a bad idea, so please change this. As you can see it just causes reviewers to trip over this with exactly the question you got here. > > Just like you use the pattern of appending "," to aggregate initialisation. Adding a comma at the end doesn't add extra lines. To be honest, I don't have a strong opinion on this either way. Personally I would probably use a comma if it is likely that the list would be extended in the future, and leave it out if I am pretty certain that won't happen. In any case, I don't mind either way. Regards, Hans > > --- > bod
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-170.c b/drivers/media/platform/qcom/camss/camss-vfe-170.c index a5aa799501861..0b211fed12760 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-170.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-170.c @@ -494,22 +494,6 @@ static int vfe_enable_output(struct vfe_line *line) return 0; } -static void vfe_disable_output(struct vfe_line *line) -{ - struct vfe_device *vfe = to_vfe(line); - struct vfe_output *output = &line->output; - unsigned long flags; - unsigned int i; - - spin_lock_irqsave(&vfe->output_lock, flags); - for (i = 0; i < output->wm_num; i++) - vfe_wm_stop(vfe, output->wm_idx[i]); - output->gen2.active_num = 0; - spin_unlock_irqrestore(&vfe->output_lock, flags); - - vfe_reset(vfe); -} - /* * vfe_enable - Enable streaming on VFE line * @line: VFE line @@ -555,29 +539,6 @@ static int vfe_enable(struct vfe_line *line) return ret; } -/* - * vfe_disable - Disable streaming on VFE line - * @line: VFE line - * - * Return 0 on success or a negative error code otherwise - */ -static int vfe_disable(struct vfe_line *line) -{ - struct vfe_device *vfe = to_vfe(line); - - vfe_disable_output(line); - - vfe_put_output(line); - - mutex_lock(&vfe->stream_lock); - - vfe->stream_count--; - - mutex_unlock(&vfe->stream_lock); - - return 0; -} - /* * vfe_isr_sof - Process start of frame interrupt * @vfe: VFE Device @@ -770,4 +731,5 @@ const struct vfe_hw_ops vfe_ops_170 = { .vfe_enable = vfe_enable, .vfe_halt = vfe_halt, .violation_read = vfe_violation_read, + .vfe_wm_stop = vfe_wm_stop, }; diff --git a/drivers/media/platform/qcom/camss/camss-vfe-480.c b/drivers/media/platform/qcom/camss/camss-vfe-480.c index 43a2964121f22..f2368b77fc6d6 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-480.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-480.c @@ -327,22 +327,6 @@ static int vfe_enable_output(struct vfe_line *line) return 0; } -static void vfe_disable_output(struct vfe_line *line) -{ - struct vfe_device *vfe = to_vfe(line); - struct vfe_output *output = &line->output; - unsigned long flags; - unsigned int i; - - spin_lock_irqsave(&vfe->output_lock, flags); - for (i = 0; i < output->wm_num; i++) - vfe_wm_stop(vfe, output->wm_idx[i]); - output->gen2.active_num = 0; - spin_unlock_irqrestore(&vfe->output_lock, flags); - - vfe_reset(vfe); -} - /* * vfe_enable - Enable streaming on VFE line * @line: VFE line @@ -390,29 +374,6 @@ static int vfe_enable(struct vfe_line *line) return ret; } -/* - * vfe_disable - Disable streaming on VFE line - * @line: VFE line - * - * Return 0 on success or a negative error code otherwise - */ -static int vfe_disable(struct vfe_line *line) -{ - struct vfe_device *vfe = to_vfe(line); - - vfe_disable_output(line); - - vfe_put_output(line); - - mutex_lock(&vfe->stream_lock); - - vfe->stream_count--; - - mutex_unlock(&vfe->stream_lock); - - return 0; -} - /* * vfe_isr_reg_update - Process reg update interrupt * @vfe: VFE Device @@ -581,4 +542,5 @@ const struct vfe_hw_ops vfe_ops_480 = { .vfe_disable = vfe_disable, .vfe_enable = vfe_enable, .vfe_halt = vfe_halt, + .vfe_wm_stop = vfe_wm_stop, }; diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index f3cf387e4907e..26817f9ca4f1a 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -410,6 +410,48 @@ int vfe_put_output(struct vfe_line *line) return 0; } +static int vfe_disable_output(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + struct vfe_output *output = &line->output; + unsigned long flags; + unsigned int i; + int ret; + + spin_lock_irqsave(&vfe->output_lock, flags); + for (i = 0; i < output->wm_num; i++) + vfe->ops->vfe_wm_stop(vfe, output->wm_idx[i]); + output->gen2.active_num = 0; + spin_unlock_irqrestore(&vfe->output_lock, flags); + + ret = vfe_reset(vfe); + + return ret; +} + +/* + * vfe_disable - Disable streaming on VFE line + * @line: VFE line + * + * Return 0 on success or a negative error code otherwise + */ +int vfe_disable(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + + vfe_disable_output(line); + + vfe_put_output(line); + + mutex_lock(&vfe->stream_lock); + + vfe->stream_count--; + + mutex_unlock(&vfe->stream_lock); + + return 0; +} + /** * vfe_isr_comp_done() - Process composite image done interrupt * @vfe: VFE Device diff --git a/drivers/media/platform/qcom/camss/camss-vfe.h b/drivers/media/platform/qcom/camss/camss-vfe.h index 4783afa73a365..09baded0dcdd6 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.h +++ b/drivers/media/platform/qcom/camss/camss-vfe.h @@ -114,6 +114,7 @@ struct vfe_hw_ops { int (*vfe_enable)(struct vfe_line *line); int (*vfe_halt)(struct vfe_device *vfe); void (*violation_read)(struct vfe_device *vfe); + void (*vfe_wm_stop)(struct vfe_device *vfe, u8 wm); }; struct vfe_isr_ops { @@ -192,6 +193,14 @@ int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id); */ int vfe_reset(struct vfe_device *vfe); +/* + * vfe_disable - Disable streaming on VFE line + * @line: VFE line + * + * Return 0 on success or a negative error code otherwise + */ +int vfe_disable(struct vfe_line *line); + extern const struct vfe_hw_ops vfe_ops_4_1; extern const struct vfe_hw_ops vfe_ops_4_7; extern const struct vfe_hw_ops vfe_ops_4_8;
We can move vfe_disable() into a common routine in the core VFE file provided we make wm_stop() a VFE specific callback. The callback is required to capture the case where VFE 17x currently isn't VC enabled where as VFE 480 is. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> --- .../media/platform/qcom/camss/camss-vfe-170.c | 40 +----------------- .../media/platform/qcom/camss/camss-vfe-480.c | 40 +----------------- drivers/media/platform/qcom/camss/camss-vfe.c | 42 +++++++++++++++++++ drivers/media/platform/qcom/camss/camss-vfe.h | 9 ++++ 4 files changed, 53 insertions(+), 78 deletions(-)