media: rkisp1: Save info pointer in rkisp1_device

To make it possible to use the rkisp1_info after probe time (for
instance to make code conditional on the ISP version), save it in the
main rkisp1_device structure. To achieve this, also move the info
structure into the common header, and document it.

While at it, drop a NULL check in rkisp1_probe() for the match data as
it can't happen.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

2 files changed, 25 insertions, 12 deletions

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index 4243ff5e2197..7dca59f7b424 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -92,6 +92,26 @@ enum rkisp1_isp_pad {
 };
 
 /*
+ * struct rkisp1_info - Model-specific ISP Information
+ *
+ * @clks: array of ISP clock names
+ * @clk_size: number of entries in the @clks array
+ * @isrs: array of ISP interrupt descriptors
+ * @isr_size: number of entries in the @isrs array
+ * @isp_ver: ISP version
+ *
+ * This structure contains information about the ISP specific to a particular
+ * ISP model, version, or integration in a particular SoC.
+ */
+struct rkisp1_info {
+	const char * const *clks;
+	unsigned int clk_size;
+	const struct rkisp1_isr_data *isrs;
+	unsigned int isr_size;
+	enum rkisp1_cif_isp_version isp_ver;
+};
+
+/*
  * struct rkisp1_sensor_async - A container for the v4l2_async_subdev to add to the notifier
  *				of the v4l2-async API
  *
@@ -386,6 +406,7 @@ struct rkisp1_debug {
  * @pipe:	   media pipeline
  * @stream_lock:   serializes {start/stop}_streaming callbacks between the capture devices.
  * @debug:	   debug params to be exposed on debugfs
+ * @info:	   version-specific ISP information
  */
 struct rkisp1_device {
 	void __iomem *base_addr;
@@ -404,6 +425,7 @@ struct rkisp1_device {
 	struct media_pipeline pipe;
 	struct mutex stream_lock; /* serialize {start/stop}_streaming cb between capture devices */
 	struct rkisp1_debug debug;
+	const struct rkisp1_info *info;
 };
 
 /*
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index 258980ef4783..39ae35074062 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -105,14 +105,6 @@ struct rkisp1_isr_data {
 	irqreturn_t (*isr)(int irq, void *ctx);
 };
 
-struct rkisp1_info {
-	const char * const *clks;
-	unsigned int clk_size;
-	const struct rkisp1_isr_data *isrs;
-	unsigned int isr_size;
-	enum rkisp1_cif_isp_version isp_ver;
-};
-
 /* ----------------------------------------------------------------------------
  * Sensor DT bindings
  */
@@ -469,14 +461,13 @@ static int rkisp1_probe(struct platform_device *pdev)
 	int ret, irq;
 	u32 cif_id;
 
-	info = of_device_get_match_data(&pdev->dev);
-	if (!info)
-		return -ENODEV;
-
 	rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL);
 	if (!rkisp1)
 		return -ENOMEM;
 
+	info = of_device_get_match_data(dev);
+	rkisp1->info = info;
+
 	dev_set_drvdata(dev, rkisp1);
 	rkisp1->dev = dev;