From: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx>
The IP block evolved from its rk3288/rk3399 base and the vendor
designates them with a numerical version. rk3399 for example
is designated V10 probably meaning V1.0.
There doesn't seem to be an actual version register we could read that
information from, so allow the match_data to carry that information
for future differentiation.
Also carry that information in the hw_revision field of the media-
controller API, so that userspace also has access to that.
The added versions are:
- V10: at least rk3288 + rk3399
- V11: seemingly unused as of now, but probably appeared in some soc
- V12: at least rk3326 + px30
- V13: at least rk1808
Signed-off-by: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/media/rkisp1.rst | 15 +++++++++++++
.../platform/rockchip/rkisp1/rkisp1-dev.c | 21 +++++++++++--------
include/uapi/linux/rkisp1-config.h | 7 +++++++
3 files changed, 34 insertions(+), 9 deletions(-)
diff --git a/Documentation/admin-guide/media/rkisp1.rst b/Documentation/admin-guide/media/rkisp1.rst
index 2267e4fb475e..e960678f47ca 100644
--- a/Documentation/admin-guide/media/rkisp1.rst
+++ b/Documentation/admin-guide/media/rkisp1.rst
@@ -13,6 +13,21 @@ This file documents the driver for the Rockchip ISP1 that is part of RK3288
and RK3399 SoCs. The driver is located under drivers/staging/media/rkisp1
and uses the Media-Controller API.
+Revisions
+=========
+
+There exist multiple smaller revisions to this ISP that got introduced in
+later SoCs. Revisions in use are documented in enum rkisp1_cif_isp_version
+in the UAPI and the revision of the ISP inside the running SoC can be read
+in the field hw_revision of struct media_device.
+
+Versions in use are:
+
+- RKISP1_V10: used at least in rk3288 and rk3399
+- RKISP1_V11: declared in the original vendor code, but not used
+- RKISP1_V12: used at least in rk3326 and px30
+- RKISP1_V13: used at least in rk1808
+
Topology
========
.. _rkisp1_topology_graph:
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index 68da1eed753d..f7e9fd305548 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -104,6 +104,7 @@
struct rkisp1_match_data {
const char * const *clks;
unsigned int size;
+ enum rkisp1_cif_isp_version isp_ver;
};
/* ----------------------------------------------------------------------------
@@ -411,15 +412,16 @@ static const char * const rk3399_isp_clks[] = {
"hclk",
};
-static const struct rkisp1_match_data rk3399_isp_clk_data = {
+static const struct rkisp1_match_data rk3399_isp_match_data = {
.clks = rk3399_isp_clks,
.size = ARRAY_SIZE(rk3399_isp_clks),
+ .isp_ver = RKISP1_V10,
};
static const struct of_device_id rkisp1_of_match[] = {
{
.compatible = "rockchip,rk3399-cif-isp",
- .data = &rk3399_isp_clk_data,
+ .data = &rk3399_isp_match_data,
},
{},
};
@@ -457,15 +459,15 @@ static void rkisp1_debug_init(struct rkisp1_device *rkisp1)
static int rkisp1_probe(struct platform_device *pdev)
{
- const struct rkisp1_match_data *clk_data;
+ const struct rkisp1_match_data *match_data;
struct device *dev = &pdev->dev;
struct rkisp1_device *rkisp1;
struct v4l2_device *v4l2_dev;
unsigned int i;
int ret, irq;
- clk_data = of_device_get_match_data(&pdev->dev);
- if (!clk_data)
+ match_data = of_device_get_match_data(&pdev->dev);
+ if (!match_data)
return -ENODEV;
rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL);
@@ -494,15 +496,16 @@ static int rkisp1_probe(struct platform_device *pdev)
rkisp1->irq = irq;
- for (i = 0; i < clk_data->size; i++)
- rkisp1->clks[i].id = clk_data->clks[i];
- ret = devm_clk_bulk_get(dev, clk_data->size, rkisp1->clks);
+ for (i = 0; i < match_data->size; i++)
+ rkisp1->clks[i].id = match_data->clks[i];
+ ret = devm_clk_bulk_get(dev, match_data->size, rkisp1->clks);
if (ret)
return ret;
- rkisp1->clk_size = clk_data->size;
+ rkisp1->clk_size = match_data->size;
pm_runtime_enable(&pdev->dev);
+ rkisp1->media_dev.hw_revision = match_data->isp_ver;
strscpy(rkisp1->media_dev.model, RKISP1_DRIVER_NAME,
sizeof(rkisp1->media_dev.model));
rkisp1->media_dev.dev = &pdev->dev;
diff --git a/include/uapi/linux/rkisp1-config.h b/include/uapi/linux/rkisp1-config.h
index 6e449e784260..bad46aadf838 100644
--- a/include/uapi/linux/rkisp1-config.h
+++ b/include/uapi/linux/rkisp1-config.h
@@ -124,6 +124,13 @@
#define RKISP1_CIF_ISP_STAT_AFM (1U << 2)
#define RKISP1_CIF_ISP_STAT_HIST (1U << 3)
+enum rkisp1_cif_isp_version {
+ RKISP1_V10 = 0,
+ RKISP1_V11,
+ RKISP1_V12,
+ RKISP1_V13,
+};
+
enum rkisp1_cif_isp_histogram_mode {
RKISP1_CIF_ISP_HISTOGRAM_MODE_DISABLE,
RKISP1_CIF_ISP_HISTOGRAM_MODE_RGB_COMBINED,
--
2.29.2
