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media: atmel: atmel-isc: extract CSC submodule config into separate function

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The CSC submodule is a part of the atmel-isc pipeline, and stands for
Color Space Conversion. It is used to apply a matrix transformation to
RGB pixels to convert them to the YUV components.
The CSC 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_csc 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>
This commit is contained in:
Eugen Hristev 2021-04-13 12:57:04 +02:00 committed by Mauro Carvalho Chehab
parent cd5af39467
commit 2ede3975c0
3 changed files with 23 additions and 7 deletions
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8
drivers/media/platform/atmel/atmel-isc-base.c
View file

@ -654,13 +654,7 @@ static void isc_set_pipeline(struct isc_device *isc, u32 pipeline)
regmap_bulk_write(regmap, ISC_GAM_GENTRY, gamma, GAMMA_ENTRIES);
regmap_bulk_write(regmap, ISC_GAM_RENTRY, gamma, GAMMA_ENTRIES);
/* Convert RGB to YUV */
regmap_write(regmap, ISC_CSC_YR_YG, 0x42 | (0x81 << 16));
regmap_write(regmap, ISC_CSC_YB_OY, 0x19 | (0x10 << 16));
regmap_write(regmap, ISC_CSC_CBR_CBG, 0xFDA | (0xFB6 << 16));
regmap_write(regmap, ISC_CSC_CBB_OCB, 0x70 | (0x80 << 16));
regmap_write(regmap, ISC_CSC_CRR_CRG, 0x70 | (0xFA2 << 16));
regmap_write(regmap, ISC_CSC_CRB_OCR, 0xFEE | (0x80 << 16));
isc->config_csc(isc);
regmap_write(regmap, ISC_CBC_BRIGHT, ctrls->brightness);
regmap_write(regmap, ISC_CBC_CONTRAST, ctrls->contrast);

7
drivers/media/platform/atmel/atmel-isc.h
View file

@ -192,6 +192,9 @@ struct isc_ctrls {
*
* @max_width: maximum frame width, dependent on the internal RAM
* @max_height: maximum frame height, dependent on the internal RAM
*
* @config_csc: pointer to a function that initializes product
* specific CSC module
*/
struct isc_device {
struct regmap *regmap;
@ -259,6 +262,10 @@ struct isc_device {
u32 max_width;
u32 max_height;
struct {
void (*config_csc)(struct isc_device *isc);
};
};
extern struct isc_format formats_list[];

15
drivers/media/platform/atmel/atmel-sama5d2-isc.c
View file

@ -54,6 +54,19 @@
#define ISC_CLK_MAX_DIV 255
static void isc_sama5d2_config_csc(struct isc_device *isc)
{
struct regmap *regmap = isc->regmap;
/* Convert RGB to YUV */
regmap_write(regmap, ISC_CSC_YR_YG, 0x42 | (0x81 << 16));
regmap_write(regmap, ISC_CSC_YB_OY, 0x19 | (0x10 << 16));
regmap_write(regmap, ISC_CSC_CBR_CBG, 0xFDA | (0xFB6 << 16));
regmap_write(regmap, ISC_CSC_CBB_OCB, 0x70 | (0x80 << 16));
regmap_write(regmap, ISC_CSC_CRR_CRG, 0x70 | (0xFA2 << 16));
regmap_write(regmap, ISC_CSC_CRB_OCR, 0xFEE | (0x80 << 16));
}
/* Gamma table with gamma 1/2.2 */
static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
/* 0 --> gamma 1/1.8 */
@ -198,6 +211,8 @@ static int atmel_isc_probe(struct platform_device *pdev)
isc->max_width = ISC_SAMA5D2_MAX_SUPPORT_WIDTH;
isc->max_height = ISC_SAMA5D2_MAX_SUPPORT_HEIGHT;
isc->config_csc = isc_sama5d2_config_csc;
/* sama5d2-isc - 8 bits per beat */
isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;