openwrt/target/linux/at91/patches-5.10/165-media-atmel-atmel-isc-extract-CBC-submodule-config-i.patch

From aa31e58d80d233385fa3b972e6b85f293e2a9093 Mon Sep 17 00:00:00 2001
From: Eugen Hristev <eugen.hristev@microchip.com>
Date: Tue, 13 Apr 2021 12:57:07 +0200
Subject: [PATCH 165/247] media: atmel: atmel-isc: extract CBC submodule config
 into separate function

The CBC submodule is a part of the atmel-isc pipeline, and stands for
Contrast Brightness Control. It is used to apply gains and offsets to the
luma (Y) and chroma (U, V) components of the YUV elements.
The CBC submodule should be initialized in the product specific driver
as it's product specific. Other products can implement it differently

[hverkuil: made isc_sama5d2_config_cbc static]

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 drivers/media/platform/atmel/atmel-isc-base.c    | 4 +---
 drivers/media/platform/atmel/atmel-isc.h         | 3 +++
 drivers/media/platform/atmel/atmel-sama5d2-isc.c | 9 +++++++++
 3 files changed, 13 insertions(+), 3 deletions(-)

--- a/drivers/media/platform/atmel/atmel-isc-base.c
+++ b/drivers/media/platform/atmel/atmel-isc-base.c
@@ -655,9 +655,7 @@ static void isc_set_pipeline(struct isc_
 	regmap_bulk_write(regmap, ISC_GAM_RENTRY, gamma, GAMMA_ENTRIES);
 
 	isc->config_csc(isc);
-
-	regmap_write(regmap, ISC_CBC_BRIGHT, ctrls->brightness);
-	regmap_write(regmap, ISC_CBC_CONTRAST, ctrls->contrast);
+	isc->config_cbc(isc);
 }
 
 static int isc_update_profile(struct isc_device *isc)
--- a/drivers/media/platform/atmel/atmel-isc.h
+++ b/drivers/media/platform/atmel/atmel-isc.h
@@ -202,6 +202,8 @@ struct isc_reg_offsets {
  *
  * @config_csc:		pointer to a function that initializes product
  *			specific CSC module
+ * @config_cbc:		pointer to a function that initializes product
+ *			specific CBC module
  *
  * @offsets:		struct holding the product specific register offsets
  */
@@ -274,6 +276,7 @@ struct isc_device {
 
 	struct {
 		void (*config_csc)(struct isc_device *isc);
+		void (*config_cbc)(struct isc_device *isc);
 	};
 
 	struct isc_reg_offsets		offsets;
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -73,6 +73,14 @@ static void isc_sama5d2_config_csc(struc
 		     0xFEE | (0x80 << 16));
 }
 
+static void isc_sama5d2_config_cbc(struct isc_device *isc)
+{
+	struct regmap *regmap = isc->regmap;
+
+	regmap_write(regmap, ISC_CBC_BRIGHT, isc->ctrls.brightness);
+	regmap_write(regmap, ISC_CBC_CONTRAST, isc->ctrls.contrast);
+}
+
 /* Gamma table with gamma 1/2.2 */
 static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
 	/* 0 --> gamma 1/1.8 */
@@ -239,6 +247,7 @@ static int atmel_isc_probe(struct platfo
 	isc->max_height = ISC_SAMA5D2_MAX_SUPPORT_HEIGHT;
 
 	isc->config_csc = isc_sama5d2_config_csc;
+	isc->config_cbc = isc_sama5d2_config_cbc;
 
 	isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;