at91: add kernel support for sama7g5 soc

Add kernel support for SAMA7G5 by back-porting mainline kernel patches.
Among SAMA7G5 features could be remembered:
- ARM Cortex-A7
- double data rate multi-port dynamic RAM controller supporting DDR2,
  DDR3, DDR3L, LPDDR2, LPDDR3 up to 533MHz
- peripherals for audio, video processing
- 1 gigabit + 1 megabit Ethernet controllers
- 6 CAN controllers
- trust zone support
- DVFS for CPU
- criptography IPs

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/166-media-atmel-atmel-isc-add-CBC-to-the-reg-offsets-str.patch b/target/linux/at91/patches-5.10/166-media-atmel-atmel-isc-add-CBC-to-the-reg-offsets-str.patch
new file mode 100644
index 0000000000..46482f0397
--- /dev/null
+++ b/target/linux/at91/patches-5.10/166-media-atmel-atmel-isc-add-CBC-to-the-reg-offsets-str.patch
@@ -0,0 +1,93 @@
+From 52e4b779ae1af3e322d0c673375dcd51315739d4 Mon Sep 17 00:00:00 2001
+From: Eugen Hristev <eugen.hristev@microchip.com>
+Date: Tue, 13 Apr 2021 12:57:08 +0200
+Subject: [PATCH 166/247] media: atmel: atmel-isc: add CBC to the reg offsets
+ struct
+
+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.
+Add cbc to the reg offsets struct. This will allow different products
+to have a different reg offset for this particular module.
+
+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    | 2 +-
+ drivers/media/platform/atmel/atmel-isc-regs.h    | 3 +++
+ drivers/media/platform/atmel/atmel-isc.h         | 2 ++
+ drivers/media/platform/atmel/atmel-sama5d2-isc.c | 7 +++++--
+ 4 files changed, 11 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
+index 865410e10e70..b7728914fda8 100644
+--- a/drivers/media/platform/atmel/atmel-isc-base.c
++++ b/drivers/media/platform/atmel/atmel-isc-base.c
+@@ -2325,7 +2325,7 @@ int isc_pipeline_init(struct isc_device *isc)
+ 		REG_FIELD(ISC_GAM_CTRL, 2, 2),
+ 		REG_FIELD(ISC_GAM_CTRL, 3, 3),
+ 		REG_FIELD(ISC_CSC_CTRL + isc->offsets.csc, 0, 0),
+-		REG_FIELD(ISC_CBC_CTRL, 0, 0),
++		REG_FIELD(ISC_CBC_CTRL + isc->offsets.cbc, 0, 0),
+ 		REG_FIELD(ISC_SUB422_CTRL, 0, 0),
+ 		REG_FIELD(ISC_SUB420_CTRL, 0, 0),
+ 	};
+diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h
+index 5a65600c5f88..a5e2fe01ba9f 100644
+--- a/drivers/media/platform/atmel/atmel-isc-regs.h
++++ b/drivers/media/platform/atmel/atmel-isc-regs.h
+@@ -177,6 +177,9 @@
+ /* Color Space Conversion CRB OCR Register */
+ #define ISC_CSC_CRB_OCR	0x000003b0
+ 
++/* Offset for CBC register specific to sama5d2 product */
++#define ISC_SAMA5D2_CBC_OFFSET	0
++
+ /* Contrast And Brightness Control Register */
+ #define ISC_CBC_CTRL    0x000003b4
+ 
+diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
+index 65c3059afb8e..d8b4b1959b94 100644
+--- a/drivers/media/platform/atmel/atmel-isc.h
++++ b/drivers/media/platform/atmel/atmel-isc.h
+@@ -146,9 +146,11 @@ struct isc_ctrls {
+ /*
+  * struct isc_reg_offsets - ISC device register offsets
+  * @csc:		Offset for the CSC register
++ * @cbc:		Offset for the CBC register
+  */
+ struct isc_reg_offsets {
+ 	u32 csc;
++	u32 cbc;
+ };
+ 
+ /*
+diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+index 770d62b483d0..bb9362093efe 100644
+--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
++++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+@@ -77,8 +77,10 @@ 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);
++	regmap_write(regmap, ISC_CBC_BRIGHT + isc->offsets.cbc,
++		     isc->ctrls.brightness);
++	regmap_write(regmap, ISC_CBC_CONTRAST + isc->offsets.cbc,
++		     isc->ctrls.contrast);
+ }
+ 
+ /* Gamma table with gamma 1/2.2 */
+@@ -250,6 +252,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
+ 	isc->config_cbc = isc_sama5d2_config_cbc;
+ 
+ 	isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
++	isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;
+ 
+ 	/* sama5d2-isc - 8 bits per beat */
+ 	isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
+-- 
+2.32.0
+