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authorEugen Hristev <eugen.hristev@microchip.com>2021-04-13 12:57:17 +0200
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-06-08 14:15:28 +0200
commit2873f85bd318bfc3f453fa78facb2b77632b36d8 (patch)
treefaf7eaf08ff1304b9daeb0f5ac691dd3432f6cfd
parent5507b10109253a19765880fffff6e9fff3810868 (diff)
media: atmel: atmel-isc: add CC initialization function
The CC submodule is a part of the atmel-isc pipeline, and stands for Color Correction. It is used to apply gains and offsets to the chroma (U, V) components of the YUV elements. Implement the CC submodule initialization, as a product specific function, which currently configures the neutral point in color correction. [hverkuil: made isc_sama5d2_config_cc 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>
-rw-r--r--drivers/media/platform/atmel/atmel-isc-base.c1
-rw-r--r--drivers/media/platform/atmel/atmel-isc.h3
-rw-r--r--drivers/media/platform/atmel/atmel-sama5d2-isc.c14
3 files changed, 18 insertions, 0 deletions
diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
index a6b62e009c38..ffce8de2cf4d 100644
--- a/drivers/media/platform/atmel/atmel-isc-base.c
+++ b/drivers/media/platform/atmel/atmel-isc-base.c
@@ -661,6 +661,7 @@ static void isc_set_pipeline(struct isc_device *isc, u32 pipeline)
isc->config_csc(isc);
isc->config_cbc(isc);
+ isc->config_cc(isc);
}
static int isc_update_profile(struct isc_device *isc)
diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
index f574bcc3ba67..a5f8d5001381 100644
--- a/drivers/media/platform/atmel/atmel-isc.h
+++ b/drivers/media/platform/atmel/atmel-isc.h
@@ -225,6 +225,8 @@ struct isc_reg_offsets {
* specific CSC module
* @config_cbc: pointer to a function that initializes product
* specific CBC module
+ * @config_cc: pointer to a function that initializes product
+ * specific CC module
*
* @offsets: struct holding the product specific register offsets
*/
@@ -298,6 +300,7 @@ struct isc_device {
struct {
void (*config_csc)(struct isc_device *isc);
void (*config_cbc)(struct isc_device *isc);
+ void (*config_cc)(struct isc_device *isc);
};
struct isc_reg_offsets offsets;
diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
index 72cb91b4b8ba..3d2e6e68015a 100644
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -83,6 +83,19 @@ static void isc_sama5d2_config_cbc(struct isc_device *isc)
isc->ctrls.contrast);
}
+static void isc_sama5d2_config_cc(struct isc_device *isc)
+{
+ struct regmap *regmap = isc->regmap;
+
+ /* Configure each register at the neutral fixed point 1.0 or 0.0 */
+ regmap_write(regmap, ISC_CC_RR_RG, (1 << 8));
+ regmap_write(regmap, ISC_CC_RB_OR, 0);
+ regmap_write(regmap, ISC_CC_GR_GG, (1 << 8) << 16);
+ regmap_write(regmap, ISC_CC_GB_OG, 0);
+ regmap_write(regmap, ISC_CC_BR_BG, 0);
+ regmap_write(regmap, ISC_CC_BB_OB, (1 << 8));
+}
+
/* Gamma table with gamma 1/2.2 */
static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
/* 0 --> gamma 1/1.8 */
@@ -230,6 +243,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
isc->config_csc = isc_sama5d2_config_csc;
isc->config_cbc = isc_sama5d2_config_cbc;
+ isc->config_cc = isc_sama5d2_config_cc;
isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;

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