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84 lines
3.0 KiB
Diff
84 lines
3.0 KiB
Diff
From 0db91d2a803221c313c9f2cd1d71050d7c5a7b5b Mon Sep 17 00:00:00 2001
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From: Eugen Hristev <eugen.hristev@microchip.com>
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Date: Tue, 13 Apr 2021 12:57:17 +0200
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Subject: [PATCH 175/247] media: atmel: atmel-isc: add CC initialization
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function
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The CC submodule is a part of the atmel-isc pipeline, and stands for
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Color Correction. It is used to apply gains and offsets to the
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chroma (U, V) components of the YUV elements.
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Implement the CC submodule initialization, as a product
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specific function, which currently configures the neutral point in color
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correction.
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[hverkuil: made isc_sama5d2_config_cc static]
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Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
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Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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---
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drivers/media/platform/atmel/atmel-isc-base.c | 1 +
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drivers/media/platform/atmel/atmel-isc.h | 3 +++
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drivers/media/platform/atmel/atmel-sama5d2-isc.c | 14 ++++++++++++++
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3 files changed, 18 insertions(+)
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--- a/drivers/media/platform/atmel/atmel-isc-base.c
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+++ b/drivers/media/platform/atmel/atmel-isc-base.c
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@@ -661,6 +661,7 @@ static void isc_set_pipeline(struct isc_
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isc->config_csc(isc);
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isc->config_cbc(isc);
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+ isc->config_cc(isc);
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}
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static int isc_update_profile(struct isc_device *isc)
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--- a/drivers/media/platform/atmel/atmel-isc.h
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+++ b/drivers/media/platform/atmel/atmel-isc.h
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@@ -224,6 +224,8 @@ struct isc_reg_offsets {
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* specific CSC module
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* @config_cbc: pointer to a function that initializes product
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* specific CBC module
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+ * @config_cc: pointer to a function that initializes product
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+ * specific CC module
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*
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* @offsets: struct holding the product specific register offsets
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*/
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@@ -297,6 +299,7 @@ struct isc_device {
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struct {
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void (*config_csc)(struct isc_device *isc);
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void (*config_cbc)(struct isc_device *isc);
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+ void (*config_cc)(struct isc_device *isc);
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};
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struct isc_reg_offsets offsets;
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--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
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+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
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@@ -83,6 +83,19 @@ static void isc_sama5d2_config_cbc(struc
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isc->ctrls.contrast);
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}
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+static void isc_sama5d2_config_cc(struct isc_device *isc)
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+{
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+ struct regmap *regmap = isc->regmap;
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+
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+ /* Configure each register at the neutral fixed point 1.0 or 0.0 */
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+ regmap_write(regmap, ISC_CC_RR_RG, (1 << 8));
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+ regmap_write(regmap, ISC_CC_RB_OR, 0);
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+ regmap_write(regmap, ISC_CC_GR_GG, (1 << 8) << 16);
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+ regmap_write(regmap, ISC_CC_GB_OG, 0);
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+ regmap_write(regmap, ISC_CC_BR_BG, 0);
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+ regmap_write(regmap, ISC_CC_BB_OB, (1 << 8));
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+}
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+
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/* Gamma table with gamma 1/2.2 */
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static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
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/* 0 --> gamma 1/1.8 */
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@@ -251,6 +264,7 @@ static int atmel_isc_probe(struct platfo
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isc->config_csc = isc_sama5d2_config_csc;
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isc->config_cbc = isc_sama5d2_config_cbc;
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+ isc->config_cc = isc_sama5d2_config_cc;
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isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
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isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;
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