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, 84 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/178-media-atmel-atmel-isc-create-callback-for-GAM-submod.patch b/target/linux/at91/patches-5.10/178-media-atmel-atmel-isc-create-callback-for-GAM-submod.patch
new file mode 100644
index 0000000000..6d53179f4a
--- /dev/null
+++ b/target/linux/at91/patches-5.10/178-media-atmel-atmel-isc-create-callback-for-GAM-submod.patch
@@ -0,0 +1,84 @@
+From 96936a6753a13dea5a8f66de949e6594dd82ce22 Mon Sep 17 00:00:00 2001
+From: Eugen Hristev <eugen.hristev@microchip.com>
+Date: Tue, 13 Apr 2021 12:57:20 +0200
+Subject: [PATCH 178/247] media: atmel: atmel-isc: create callback for GAM
+ submodule product specific
+
+The GAM submodule is a part of the atmel-isc pipeline, and stands for
+Gamma Correction. It is used to apply the gamma curve to the incoming pixels.
+Create a product specific callback for initializing the GAM submodule
+of the pipeline.
+For sama5d2 product, there is no special configuration at this moment,
+thus this function is a noop.
+
+[hverkuil: made isc_sama5d2_config_gam 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    | 1 +
+ drivers/media/platform/atmel/atmel-isc.h         | 3 +++
+ drivers/media/platform/atmel/atmel-sama5d2-isc.c | 6 ++++++
+ 3 files changed, 10 insertions(+)
+
+diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
+index 777a5dc19d6e..aef0d6570d39 100644
+--- a/drivers/media/platform/atmel/atmel-isc-base.c
++++ b/drivers/media/platform/atmel/atmel-isc-base.c
+@@ -663,6 +663,7 @@ static void isc_set_pipeline(struct isc_device *isc, u32 pipeline)
+ 	isc->config_csc(isc);
+ 	isc->config_cbc(isc);
+ 	isc->config_cc(isc);
++	isc->config_gam(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 2f093dc968cd..151997c11f56 100644
+--- a/drivers/media/platform/atmel/atmel-isc.h
++++ b/drivers/media/platform/atmel/atmel-isc.h
+@@ -228,6 +228,8 @@ struct isc_reg_offsets {
+  *			specific CBC module
+  * @config_cc:		pointer to a function that initializes product
+  *			specific CC module
++ * @config_gam:		pointer to a function that initializes product
++ *			specific GAMMA module
+  * @config_ctrls:	pointer to a functoin that initializes product
+  *			specific v4l2 controls.
+  *
+@@ -305,6 +307,7 @@ struct isc_device {
+ 		void (*config_csc)(struct isc_device *isc);
+ 		void (*config_cbc)(struct isc_device *isc);
+ 		void (*config_cc)(struct isc_device *isc);
++		void (*config_gam)(struct isc_device *isc);
+ 
+ 		void (*config_ctrls)(struct isc_device *isc,
+ 				     const struct v4l2_ctrl_ops *ops);
+diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+index 84d1bf3305f2..b99849ecb8a1 100644
+--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
++++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+@@ -112,6 +112,11 @@ static void isc_sama5d2_config_dpc(struct isc_device *isc)
+ 	/* This module is not present on sama5d2 pipeline */
+ }
+ 
++static void isc_sama5d2_config_gam(struct isc_device *isc)
++{
++	/* No specific gamma configuration */
++}
++
+ /* Gamma table with gamma 1/2.2 */
+ static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
+ 	/* 0 --> gamma 1/1.8 */
+@@ -282,6 +287,7 @@ 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->config_gam = isc_sama5d2_config_gam;
+ 	isc->config_ctrls = isc_sama5d2_config_ctrls;
+ 
+ 	isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
+-- 
+2.32.0
+