openwrt/target/linux/at91/patches-5.10/176-media-atmel-atmel-isc-create-product-specific-v4l2-c.patch

From 0a75c502eac4f2ef71b6c3e0b3a01db1b3c37ba9 Mon Sep 17 00:00:00 2001
From: Eugen Hristev <[email protected]>
Date: Tue, 13 Apr 2021 12:57:18 +0200
Subject: [PATCH 176/247] media: atmel: atmel-isc: create product specific v4l2
 controls config

Create product specific callback for initializing v4l2 controls.
Call this from v4l2 controls init function.

[hverkuil: made isc_sama5d2_config_ctrls static]

Signed-off-by: Eugen Hristev <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
---
 drivers/media/platform/atmel/atmel-isc-base.c    |  5 +++--
 drivers/media/platform/atmel/atmel-isc.h         |  5 +++++
 drivers/media/platform/atmel/atmel-sama5d2-isc.c | 12 ++++++++++++
 3 files changed, 20 insertions(+), 2 deletions(-)

--- a/drivers/media/platform/atmel/atmel-isc-base.c
+++ b/drivers/media/platform/atmel/atmel-isc-base.c
@@ -2051,11 +2051,12 @@ static int isc_ctrl_init(struct isc_devi
 	if (ret < 0)
 		return ret;
 
+	/* Initialize product specific controls. For example, contrast */
+	isc->config_ctrls(isc, ops);
+
 	ctrls->brightness = 0;
-	ctrls->contrast = 256;
 
 	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -1024, 1023, 1, 0);
-	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -2048, 2047, 1, 256);
 	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAMMA, 0, isc->gamma_max, 1,
 			  isc->gamma_max);
 	isc->awb_ctrl = v4l2_ctrl_new_std(hdl, &isc_awb_ops,
--- a/drivers/media/platform/atmel/atmel-isc.h
+++ b/drivers/media/platform/atmel/atmel-isc.h
@@ -226,6 +226,8 @@ struct isc_reg_offsets {
  *			specific CBC module
  * @config_cc:		pointer to a function that initializes product
  *			specific CC module
+ * @config_ctrls:	pointer to a functoin that initializes product
+ *			specific v4l2 controls.
  *
  * @offsets:		struct holding the product specific register offsets
  */
@@ -300,6 +302,9 @@ struct isc_device {
 		void (*config_csc)(struct isc_device *isc);
 		void (*config_cbc)(struct isc_device *isc);
 		void (*config_cc)(struct isc_device *isc);
+
+		void (*config_ctrls)(struct isc_device *isc,
+				     const struct v4l2_ctrl_ops *ops);
 	};
 
 	struct isc_reg_offsets		offsets;
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -96,6 +96,17 @@ static void isc_sama5d2_config_cc(struct
 	regmap_write(regmap, ISC_CC_BB_OB, (1 << 8));
 }
 
+static void isc_sama5d2_config_ctrls(struct isc_device *isc,
+				     const struct v4l2_ctrl_ops *ops)
+{
+	struct isc_ctrls *ctrls = &isc->ctrls;
+	struct v4l2_ctrl_handler *hdl = &ctrls->handler;
+
+	ctrls->contrast = 256;
+
+	v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -2048, 2047, 1, 256);
+}
+
 /* Gamma table with gamma 1/2.2 */
 static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
 	/* 0 --> gamma 1/1.8 */
@@ -265,6 +276,7 @@ static int atmel_isc_probe(struct platfo
 	isc->config_csc = isc_sama5d2_config_csc;
 	isc->config_cbc = isc_sama5d2_config_cbc;
 	isc->config_cc = isc_sama5d2_config_cc;
+	isc->config_ctrls = isc_sama5d2_config_ctrls;
 
 	isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
 	isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;