[PATCH v9 05/28] rcar-vin: move chip information to own struct

Niklas Söderlund
2017-12-08T01:08:59Z

When Gen3 support is added to the driver more than chip ID will be
different for the different SoCs. To avoid a lot of if statements in the
code create a struct chip_info to store this information.

And while we are at it sort the compatible string entries and make use
of of_device_get_match_data() which will always work as the driver is DT
only, so there's always a valid match.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
---
drivers/media/platform/rcar-vin/rcar-core.c | 54 ++++++++++++++++++++++-------
drivers/media/platform/rcar-vin/rcar-v4l2.c | 3 +-
drivers/media/platform/rcar-vin/rcar-vin.h | 12 +++++--
3 files changed, 53 insertions(+), 16 deletions(-)

diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
index 6ab51acd676641ec..73c1700a409bfd35 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -230,21 +230,53 @@ static int rvin_digital_graph_init(struct rvin_dev *vin)
* Platform Device Driver
*/

+static const struct rvin_info rcar_info_h1 = {
+ .chip = RCAR_H1,
+};
+
+static const struct rvin_info rcar_info_m1 = {
+ .chip = RCAR_M1,
+};
+
+static const struct rvin_info rcar_info_gen2 = {
+ .chip = RCAR_GEN2,
+};
+
static const struct of_device_id rvin_of_id_table[] = {
- { .compatible = "renesas,vin-r8a7794", .data = (void *)RCAR_GEN2 },
- { .compatible = "renesas,vin-r8a7793", .data = (void *)RCAR_GEN2 },
- { .compatible = "renesas,vin-r8a7791", .data = (void *)RCAR_GEN2 },
- { .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 },
- { .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 },
- { .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 },
- { .compatible = "renesas,rcar-gen2-vin", .data = (void *)RCAR_GEN2 },
+ {
+ .compatible = "renesas,vin-r8a7778",
+ .data = &rcar_info_m1,
+ },
+ {
+ .compatible = "renesas,vin-r8a7779",
+ .data = &rcar_info_h1,
+ },
+ {
+ .compatible = "renesas,vin-r8a7790",
+ .data = &rcar_info_gen2,
+ },
+ {
+ .compatible = "renesas,vin-r8a7791",
+ .data = &rcar_info_gen2,
+ },
+ {
+ .compatible = "renesas,vin-r8a7793",
+ .data = &rcar_info_gen2,
+ },
+ {
+ .compatible = "renesas,vin-r8a7794",
+ .data = &rcar_info_gen2,
+ },
+ {
+ .compatible = "renesas,rcar-gen2-vin",
+ .data = &rcar_info_gen2,
+ },
{ },
};
MODULE_DEVICE_TABLE(of, rvin_of_id_table);

static int rcar_vin_probe(struct platform_device *pdev)
{
- const struct of_device_id *match;
struct rvin_dev *vin;
struct resource *mem;
int irq, ret;
@@ -253,12 +285,8 @@ static int rcar_vin_probe(struct platform_device *pdev)
if (!vin)
return -ENOMEM;

- match = of_match_device(of_match_ptr(rvin_of_id_table), &pdev->dev);
- if (!match)
- return -ENODEV;
-
vin->dev = &pdev->dev;
- vin->chip = (enum chip_id)match->data;
+ vin->info = of_device_get_match_data(&pdev->dev);

mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (mem == NULL)
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index 4a0610a6b4503501..b1caa04921aa23bb 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -266,7 +266,8 @@ static int __rvin_try_format(struct rvin_dev *vin,
pix->sizeimage = max_t(u32, pix->sizeimage,
rvin_format_sizeimage(pix));

- if (vin->chip == RCAR_M1 && pix->pixelformat == V4L2_PIX_FMT_XBGR32) {
+ if (vin->info->chip == RCAR_M1 &&
+ pix->pixelformat == V4L2_PIX_FMT_XBGR32) {
vin_err(vin, "pixel format XBGR32 not supported on M1\n");
return -EINVAL;
}
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 85cb7ec53d2b08b5..0d3949c8c08c8f63 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -88,11 +88,19 @@ struct rvin_graph_entity {
unsigned int sink_pad;
};

+/**
+ * struct rvin_info - Information about the particular VIN implementation
+ * @chip: type of VIN chip
+ */
+struct rvin_info {
+ enum chip_id chip;
+};
+
/**
* struct rvin_dev - Renesas VIN device structure
* @dev: (OF) device
* @base: device I/O register space remapped to virtual memory
- * @chip: type of VIN chip
+ * @info: info about VIN instance
*
* @vdev: V4L2 video device associated with VIN
* @v4l2_dev: V4L2 device
@@ -120,7 +128,7 @@ struct rvin_graph_entity {
struct rvin_dev {
struct device *dev;
void __iomem *base;
- enum chip_id chip;
+ const struct rvin_info *info;

struct video_device vdev;
struct v4l2_device v4l2_dev;
--
2.15.0