Hi Paul, Thank you for the patch. On Mon, Jun 27, 2022 at 07:44:29PM +0900, Paul Elder wrote: > Some hardware supported by the rkisp1 driver, such as the ISP in the > i.MX8MP, don't have a self path. Add a feature flag for this, and > massage the rest of the driver to support the lack of a self path. > > Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx> > > --- > This patch depends on "media: rkisp1: Cleanups and add support for > i.MX8MP" [1], which in turn depends on v4 of "media: rkisp1: Misc bug fixes > and cleanups" [2]. > > [1] https://lore.kernel.org/linux-media/20220625070034.6odv6cyvqqigb2sa@guri/T/ > [2] https://lore.kernel.org/linux-media/Ymbxs2p9Tuf331qM@xxxxxxxxxxxxxxxxxxxxxxxxxx/T/ > --- > .../media/platform/rockchip/rkisp1/rkisp1-capture.c | 11 ++++++++--- > .../media/platform/rockchip/rkisp1/rkisp1-common.h | 1 + > drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c | 10 +++++++--- > .../media/platform/rockchip/rkisp1/rkisp1-resizer.c | 7 +++++-- > 4 files changed, 21 insertions(+), 8 deletions(-) > > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c > index 234b1f8488cb..9387996f64a4 100644 > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c > @@ -711,6 +711,8 @@ irqreturn_t rkisp1_capture_isr(int irq, void *ctx) > struct rkisp1_device *rkisp1 = dev_get_drvdata(dev); > unsigned int i; > u32 status; > + bool self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH; > + unsigned int dev_count = ARRAY_SIZE(rkisp1->capture_devs) - (self_path ? 0 : 1); Please move those two lines up a bit, just below rkisp1, to more or less soft them by length. I'm tempted to just write unsigned int dev_count = self_path ? 2 : 1; Or even better, add an inline function to the common.h header for this ? The code is duplicated in many places. > > status = rkisp1_read(rkisp1, RKISP1_CIF_MI_MIS); > if (!status) > @@ -718,7 +720,7 @@ irqreturn_t rkisp1_capture_isr(int irq, void *ctx) > > rkisp1_write(rkisp1, RKISP1_CIF_MI_ICR, status); > > - for (i = 0; i < ARRAY_SIZE(rkisp1->capture_devs); ++i) { > + for (i = 0; i < dev_count; ++i) { > struct rkisp1_capture *cap = &rkisp1->capture_devs[i]; > > if (!(status & RKISP1_CIF_MI_FRAME(cap))) > @@ -875,6 +877,7 @@ static void rkisp1_cap_stream_enable(struct rkisp1_capture *cap) > { > struct rkisp1_device *rkisp1 = cap->rkisp1; > struct rkisp1_capture *other = &rkisp1->capture_devs[cap->id ^ 1]; > + bool has_self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH; > > cap->ops->set_data_path(cap); > cap->ops->config(cap); > @@ -892,7 +895,7 @@ static void rkisp1_cap_stream_enable(struct rkisp1_capture *cap) > * This's also required because the second FE maybe corrupt > * especially when run at 120fps. > */ > - if (!other->is_streaming) { > + if (has_self_path && !other->is_streaming) { Shouldn't this be if (!has_self_path || !other->is_streaming) { ? If there's no self-path, it can't be streaming, should we should update immediately, or am I missing something ? > /* force cfg update */ > rkisp1_write(rkisp1, RKISP1_CIF_MI_INIT, > RKISP1_CIF_MI_INIT_SOFT_UPD); > @@ -1447,8 +1450,10 @@ int rkisp1_capture_devs_register(struct rkisp1_device *rkisp1) > { > unsigned int i; > int ret; > + bool self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH; > + unsigned int dev_count = ARRAY_SIZE(rkisp1->capture_devs) - (self_path ? 0 : 1); > > - for (i = 0; i < ARRAY_SIZE(rkisp1->capture_devs); i++) { > + for (i = 0; i < dev_count; i++) { > struct rkisp1_capture *cap = &rkisp1->capture_devs[i]; > > rkisp1_capture_init(rkisp1, i); > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h > index 0b834579d08c..4a9e53aa3229 100644 > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h > @@ -114,6 +114,7 @@ enum rkisp1_feature { > RKISP1_FEATURE_RSZ_CROP = BIT(2), > RKISP1_FEATURE_MAIN_STRIDE = BIT(3), > RKISP1_FEATURE_DMA_34BIT = BIT(4), > + RKISP1_FEATURE_SELF_PATH = BIT(5), > }; > > /* > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c > index 4c77aa2bc50a..721075849a25 100644 > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c > @@ -328,6 +328,8 @@ static int rkisp1_create_links(struct rkisp1_device *rkisp1) > { > unsigned int i; > int ret; > + bool self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH; > + unsigned int dev_count = self_path ? 2 : 1; > > if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) { > /* Link the CSI receiver to the ISP. */ > @@ -341,7 +343,7 @@ static int rkisp1_create_links(struct rkisp1_device *rkisp1) > } > > /* create ISP->RSZ->CAP links */ > - for (i = 0; i < 2; i++) { > + for (i = 0; i < dev_count; i++) { > struct media_entity *resizer = > &rkisp1->resizer_devs[i].sd.entity; > struct media_entity *capture = > @@ -466,7 +468,8 @@ static const struct rkisp1_info px30_isp_info = { > .isr_size = ARRAY_SIZE(px30_isp_isrs), > .isp_ver = RKISP1_V12, > .features = RKISP1_FEATURE_MIPI_CSI2 > - | RKISP1_FEATURE_DUAL_CROP, > + | RKISP1_FEATURE_DUAL_CROP > + | RKISP1_FEATURE_SELF_PATH, > }; > > static const char * const rk3399_isp_clks[] = { > @@ -486,7 +489,8 @@ static const struct rkisp1_info rk3399_isp_info = { > .isr_size = ARRAY_SIZE(rk3399_isp_isrs), > .isp_ver = RKISP1_V10, > .features = RKISP1_FEATURE_MIPI_CSI2 > - | RKISP1_FEATURE_DUAL_CROP, > + | RKISP1_FEATURE_DUAL_CROP > + | RKISP1_FEATURE_SELF_PATH, > }; > > static const char * const imx8mp_isp_clks[] = { > diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c > index 29a31b18a082..fe699b49757c 100644 > --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c > +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c > @@ -673,6 +673,7 @@ static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd, int enable) > struct rkisp1_device *rkisp1 = rsz->rkisp1; > struct rkisp1_capture *other = &rkisp1->capture_devs[rsz->id ^ 1]; > enum rkisp1_shadow_regs_when when = RKISP1_SHADOW_REGS_SYNC; > + bool has_self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH; > > if (!enable) { > if (rkisp1->info->features & RKISP1_FEATURE_DUAL_CROP) > @@ -681,7 +682,7 @@ static int rkisp1_rsz_s_stream(struct v4l2_subdev *sd, int enable) > return 0; > } > > - if (other->is_streaming) > + if (has_self_path && other->is_streaming) > when = RKISP1_SHADOW_REGS_ASYNC; > > mutex_lock(&rsz->ops_lock); > @@ -771,8 +772,10 @@ int rkisp1_resizer_devs_register(struct rkisp1_device *rkisp1) > { > unsigned int i; > int ret; > + bool self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH; > + unsigned int dev_count = ARRAY_SIZE(rkisp1->resizer_devs) - (self_path ? 0 : 1); > > - for (i = 0; i < ARRAY_SIZE(rkisp1->resizer_devs); i++) { > + for (i = 0; i < dev_count; i++) { > struct rkisp1_resizer *rsz = &rkisp1->resizer_devs[i]; > > rsz->rkisp1 = rkisp1; -- Regards, Laurent Pinchart
