[PATCH v2] media: rkisp1: Support devices without self path
Dafna Hirschfeld
dafna at fastmail.com
Sun Jul 10 21:04:36 PDT 2022
On 28.06.2022 14:44, 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 at ideasonboard.com>
>
>---
>Changes in v2:
>- add rkisp1_path_count() helper to obtain the number of paths
>- fix forcing config update when there's no self path
>
>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].
>
The code in rkisp1_capture_devs_unregister refer to selfpath cap,
the code there should probably change as well:
if (has_self_path)
rkisp1_unregister_capture(sp);
and the same for rkisp1_resizer_devs_unregister
thanks,
Dafna
>[1] https://lore.kernel.org/linux-media/20220625070034.6odv6cyvqqigb2sa@guri/T/
>[2] https://lore.kernel.org/linux-media/Ymbxs2p9Tuf331qM@pendragon.ideasonboard.com/T/
>---
> .../platform/rockchip/rkisp1/rkisp1-capture.c | 9 ++++++---
> .../platform/rockchip/rkisp1/rkisp1-common.h | 15 +++++++++++++++
> .../media/platform/rockchip/rkisp1/rkisp1-dev.c | 9 ++++++---
> .../platform/rockchip/rkisp1/rkisp1-resizer.c | 6 ++++--
> 4 files changed, 31 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..215be4034c52 100644
>--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
>+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
>@@ -709,6 +709,7 @@ irqreturn_t rkisp1_capture_isr(int irq, void *ctx)
> {
> struct device *dev = ctx;
> struct rkisp1_device *rkisp1 = dev_get_drvdata(dev);
>+ unsigned int dev_count = rkisp1_path_count(rkisp1);
> unsigned int i;
> u32 status;
>
>@@ -718,7 +719,7 @@ 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 +876,7 @@ 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 +894,7 @@ 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) {
> /* force cfg update */
> rkisp1_write(rkisp1, RKISP1_CIF_MI_INIT,
> RKISP1_CIF_MI_INIT_SOFT_UPD);
>@@ -1445,10 +1447,11 @@ rkisp1_capture_init(struct rkisp1_device *rkisp1, enum rkisp1_stream_id id)
>
> int rkisp1_capture_devs_register(struct rkisp1_device *rkisp1)
> {
>+ unsigned int dev_count = rkisp1_path_count(rkisp1);
> unsigned int i;
> int ret;
>
>- 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..f25d885c79ff 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),
> };
>
> /*
>@@ -552,6 +553,20 @@ unsigned int rkisp1_mbus_info_length(void);
> */
> const struct rkisp1_mbus_info *rkisp1_mbus_info_get_by_index(unsigned int index);
>
>+/*
>+ * rkisp1_path_count - Return the number of paths supported by the device
>+ *
>+ * Some devices only have a main path, while other device have both a main path
>+ * and a self path. This function returns the number of paths that this device
>+ * has, based on the feature flags. It should be used insted of checking
>+ * ARRAY_SIZE of capture_devs/resizer_devs.
>+ */
>+static inline unsigned int rkisp1_path_count(struct rkisp1_device *rkisp1)
>+{
>+ bool has_self_path = rkisp1->info->features & RKISP1_FEATURE_SELF_PATH;
>+ return has_self_path ? 2 : 1;
>+}
>+
> /*
> * rkisp1_sd_adjust_crop_rect - adjust a rectangle to fit into another rectangle.
> *
>diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
>index 4c77aa2bc50a..8fd9f67836a5 100644
>--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
>+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
>@@ -326,6 +326,7 @@ static const struct dev_pm_ops rkisp1_pm_ops = {
>
> static int rkisp1_create_links(struct rkisp1_device *rkisp1)
> {
>+ unsigned int dev_count = rkisp1_path_count(rkisp1);
> unsigned int i;
> int ret;
>
>@@ -341,7 +342,7 @@ 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 +467,8 @@ 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 +488,8 @@ 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..a18dacc84568 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);
>@@ -769,10 +770,11 @@ static int rkisp1_rsz_register(struct rkisp1_resizer *rsz)
>
> int rkisp1_resizer_devs_register(struct rkisp1_device *rkisp1)
> {
>+ unsigned int dev_count = rkisp1_path_count(rkisp1);
> unsigned int i;
> int ret;
>
>- 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;
>--
>2.30.2
>
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