media: aspeed: add AST2600 support

Video engine in AST2600 has the exactly same register set with
AST2500 except VR084 register which provides more precise JPEG
size read back. This commit adds support for the difference and
adds 'aspeed,ast2600-video-engine' compatible OF string.

Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index 47444a3..7d98db1 100644 (file)
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 // Copyright 2020 IBM Corp.
-// Copyright (c) 2019 Intel Corporation
+// Copyright (c) 2019-2020 Intel Corporation
 
 #include <linux/atomic.h>
 #include <linux/bitfield.h>
@@ -132,7 +132,8 @@
 #define  VE_COMP_CTRL_HQ_DCT_CHR       GENMASK(26, 22)
 #define  VE_COMP_CTRL_HQ_DCT_LUM       GENMASK(31, 27)
 
-#define VE_OFFSET_COMP_STREAM          0x078
+#define AST2400_VE_COMP_SIZE_READ_BACK 0x078
+#define AST2600_VE_COMP_SIZE_READ_BACK 0x084
 
 #define VE_SRC_LR_EDGE_DET             0x090
 #define  VE_SRC_LR_EDGE_DET_LEFT       GENMASK(11, 0)
@@ -252,12 +253,17 @@ struct aspeed_video_config {
 
 static const struct aspeed_video_config ast2400_config = {
        .jpeg_mode = AST2400_VE_SEQ_CTRL_JPEG_MODE,
-       .comp_size_read = VE_OFFSET_COMP_STREAM,
+       .comp_size_read = AST2400_VE_COMP_SIZE_READ_BACK,
 };
 
 static const struct aspeed_video_config ast2500_config = {
        .jpeg_mode = AST2500_VE_SEQ_CTRL_JPEG_MODE,
-       .comp_size_read = VE_OFFSET_COMP_STREAM,
+       .comp_size_read = AST2400_VE_COMP_SIZE_READ_BACK,
+};
+
+static const struct aspeed_video_config ast2600_config = {
+       .jpeg_mode = AST2500_VE_SEQ_CTRL_JPEG_MODE,
+       .comp_size_read = AST2600_VE_COMP_SIZE_READ_BACK,
 };
 
 static const u32 aspeed_video_jpeg_header[ASPEED_VIDEO_JPEG_HEADER_SIZE] = {
@@ -1673,6 +1679,7 @@ err_unprepare_eclk:
 static const struct of_device_id aspeed_video_of_match[] = {
        { .compatible = "aspeed,ast2400-video-engine", .data = &ast2400_config },
        { .compatible = "aspeed,ast2500-video-engine", .data = &ast2500_config },
+       { .compatible = "aspeed,ast2600-video-engine", .data = &ast2600_config },
        {}
 };
 MODULE_DEVICE_TABLE(of, aspeed_video_of_match);