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, 140 insertions, 0 deletions

diff --git a/target/linux/at91/patches-5.10/160-media-atmel-atmel-isc-specialize-max-width-and-max-h.patch b/target/linux/at91/patches-5.10/160-media-atmel-atmel-isc-specialize-max-width-and-max-h.patch
new file mode 100644
index 0000000000..1508f8485f
--- /dev/null
+++ b/target/linux/at91/patches-5.10/160-media-atmel-atmel-isc-specialize-max-width-and-max-h.patch
@@ -0,0 +1,140 @@
+From b51819e17260af2ecc152b7dcd61e63bcaa35edf Mon Sep 17 00:00:00 2001
+From: Eugen Hristev <eugen.hristev@microchip.com>
+Date: Tue, 13 Apr 2021 12:57:02 +0200
+Subject: [PATCH 160/247] media: atmel: atmel-isc: specialize max width and max
+ height
+
+Move the max width and max height constants to the product specific driver
+and have them in the device struct.
+
+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 | 28 +++++++++----------
+ drivers/media/platform/atmel/atmel-isc.h      |  9 ++++--
+ .../media/platform/atmel/atmel-sama5d2-isc.c  |  7 +++--
+ 3 files changed, 25 insertions(+), 19 deletions(-)
+
+diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
+index 02f1d1c6b06e..ed0048e79f3b 100644
+--- a/drivers/media/platform/atmel/atmel-isc-base.c
++++ b/drivers/media/platform/atmel/atmel-isc-base.c
+@@ -1216,8 +1216,8 @@ static void isc_try_fse(struct isc_device *isc,
+ 	 * just use the maximum ISC can receive.
+ 	 */
+ 	if (ret) {
+-		pad_cfg->try_crop.width = ISC_MAX_SUPPORT_WIDTH;
+-		pad_cfg->try_crop.height = ISC_MAX_SUPPORT_HEIGHT;
++		pad_cfg->try_crop.width = isc->max_width;
++		pad_cfg->try_crop.height = isc->max_height;
+ 	} else {
+ 		pad_cfg->try_crop.width = fse.max_width;
+ 		pad_cfg->try_crop.height = fse.max_height;
+@@ -1294,10 +1294,10 @@ static int isc_try_fmt(struct isc_device *isc, struct v4l2_format *f,
+ 	isc->try_config.sd_format = sd_fmt;
+ 
+ 	/* Limit to Atmel ISC hardware capabilities */
+-	if (pixfmt->width > ISC_MAX_SUPPORT_WIDTH)
+-		pixfmt->width = ISC_MAX_SUPPORT_WIDTH;
+-	if (pixfmt->height > ISC_MAX_SUPPORT_HEIGHT)
+-		pixfmt->height = ISC_MAX_SUPPORT_HEIGHT;
++	if (pixfmt->width > isc->max_width)
++		pixfmt->width = isc->max_width;
++	if (pixfmt->height > isc->max_height)
++		pixfmt->height = isc->max_height;
+ 
+ 	/*
+ 	 * The mbus format is the one the subdev outputs.
+@@ -1339,10 +1339,10 @@ static int isc_try_fmt(struct isc_device *isc, struct v4l2_format *f,
+ 	v4l2_fill_pix_format(pixfmt, &format.format);
+ 
+ 	/* Limit to Atmel ISC hardware capabilities */
+-	if (pixfmt->width > ISC_MAX_SUPPORT_WIDTH)
+-		pixfmt->width = ISC_MAX_SUPPORT_WIDTH;
+-	if (pixfmt->height > ISC_MAX_SUPPORT_HEIGHT)
+-		pixfmt->height = ISC_MAX_SUPPORT_HEIGHT;
++	if (pixfmt->width > isc->max_width)
++		pixfmt->width = isc->max_width;
++	if (pixfmt->height > isc->max_height)
++		pixfmt->height = isc->max_height;
+ 
+ 	pixfmt->field = V4L2_FIELD_NONE;
+ 	pixfmt->bytesperline = (pixfmt->width * isc->try_config.bpp) >> 3;
+@@ -1380,10 +1380,10 @@ static int isc_set_fmt(struct isc_device *isc, struct v4l2_format *f)
+ 		return ret;
+ 
+ 	/* Limit to Atmel ISC hardware capabilities */
+-	if (pixfmt->width > ISC_MAX_SUPPORT_WIDTH)
+-		pixfmt->width = ISC_MAX_SUPPORT_WIDTH;
+-	if (pixfmt->height > ISC_MAX_SUPPORT_HEIGHT)
+-		pixfmt->height = ISC_MAX_SUPPORT_HEIGHT;
++	if (f->fmt.pix.width > isc->max_width)
++		f->fmt.pix.width = isc->max_width;
++	if (f->fmt.pix.height > isc->max_height)
++		f->fmt.pix.height = isc->max_height;
+ 
+ 	isc->fmt = *f;
+ 
+diff --git a/drivers/media/platform/atmel/atmel-isc.h b/drivers/media/platform/atmel/atmel-isc.h
+index bb43d3a93052..f208fb691ac9 100644
+--- a/drivers/media/platform/atmel/atmel-isc.h
++++ b/drivers/media/platform/atmel/atmel-isc.h
+@@ -10,9 +10,6 @@
+  */
+ #ifndef _ATMEL_ISC_H_
+ 
+-#define ISC_MAX_SUPPORT_WIDTH   2592
+-#define ISC_MAX_SUPPORT_HEIGHT  1944
+-
+ #define ISC_CLK_MAX_DIV		255
+ 
+ enum isc_clk_id {
+@@ -190,6 +187,9 @@ struct isc_ctrls {
+  * @gamma_table:	pointer to the table with gamma values, has
+  *			gamma_max sets of GAMMA_ENTRIES entries each
+  * @gamma_max:		maximum number of sets of inside the gamma_table
++ *
++ * @max_width:		maximum frame width, dependent on the internal RAM
++ * @max_height:		maximum frame height, dependent on the internal RAM
+  */
+ struct isc_device {
+ 	struct regmap		*regmap;
+@@ -253,6 +253,9 @@ struct isc_device {
+ 	/* pointer to the defined gamma table */
+ 	const u32	(*gamma_table)[GAMMA_ENTRIES];
+ 	u32		gamma_max;
++
++	u32		max_width;
++	u32		max_height;
+ };
+ 
+ extern struct isc_format formats_list[];
+diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+index cba6e6c8810b..39fc8d4f9bdc 100644
+--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
++++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+@@ -49,8 +49,8 @@
+ #include "atmel-isc-regs.h"
+ #include "atmel-isc.h"
+ 
+-#define ISC_MAX_SUPPORT_WIDTH   2592
+-#define ISC_MAX_SUPPORT_HEIGHT  1944
++#define ISC_SAMA5D2_MAX_SUPPORT_WIDTH   2592
++#define ISC_SAMA5D2_MAX_SUPPORT_HEIGHT  1944
+ 
+ #define ISC_CLK_MAX_DIV		255
+ 
+@@ -216,6 +216,9 @@ static int atmel_isc_probe(struct platform_device *pdev)
+ 	isc->gamma_table = isc_sama5d2_gamma_table;
+ 	isc->gamma_max = 2;
+ 
++	isc->max_width = ISC_SAMA5D2_MAX_SUPPORT_WIDTH;
++	isc->max_height = ISC_SAMA5D2_MAX_SUPPORT_HEIGHT;
++
+ 	ret = isc_pipeline_init(isc);
+ 	if (ret)
+ 		return ret;
+-- 
+2.32.0
+