[PATCH v5 07/10] media: aspeed: Use runtime configuration

Jammy Huang
2021-11-18T07:41:41Z

The aspeed video IP has some differences between SoC families. Currently
the driver decides which registers to use at compile time, which means
a single kernel can not be used between platforms.

Switch to using runtime configuration of the registers that vary between
SoC families.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
---
v5
- new
---
drivers/media/platform/aspeed-video.c | 71 ++++++++++++++++++++-------
1 file changed, 52 insertions(+), 19 deletions(-)

diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index d2335d669fb3..ba8ee82b38c3 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -75,11 +75,8 @@
#define VE_SEQ_CTRL_CAP_BUSY BIT(16)
#define VE_SEQ_CTRL_COMP_BUSY BIT(18)

-#ifdef CONFIG_MACH_ASPEED_G4
-#define VE_SEQ_CTRL_JPEG_MODE BIT(8) /* AST2400 */
-#else
-#define VE_SEQ_CTRL_JPEG_MODE BIT(13) /* AST2500/2600 */
-#endif
+#define AST2500_VE_SEQ_CTRL_JPEG_MODE BIT(13)
+#define AST2400_VE_SEQ_CTRL_JPEG_MODE BIT(8)

#define VE_CTRL 0x008
#define VE_CTRL_HSYNC_POL BIT(0)
@@ -136,9 +133,8 @@
#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 VE_JPEG_COMP_SIZE_READ_BACK 0x084
+#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)
@@ -233,6 +229,8 @@ struct aspeed_video {
struct video_device vdev;
struct mutex video_lock; /* v4l2 and videobuf2 lock */

+ struct aspeed_video_config config;
+
wait_queue_head_t wait;
spinlock_t lock; /* buffer list lock */
struct delayed_work res_work;
@@ -258,6 +256,30 @@ struct aspeed_video {

#define to_aspeed_video(x) container_of((x), struct aspeed_video, v4l2_dev)

+struct aspeed_video_config {
+ u32 version;
+ u32 jpeg_mode;
+ u32 comp_size_read;
+};
+
+static const struct aspeed_video_config ast2400_config = {
+ .version = 4,
+ .jpeg_mode = AST2400_VE_SEQ_CTRL_JPEG_MODE,
+ .comp_size_read = AST2400_VE_COMP_SIZE_READ_BACK,
+};
+
+static const struct aspeed_video_config ast2500_config = {
+ .version = 5,
+ .jpeg_mode = AST2500_VE_SEQ_CTRL_JPEG_MODE,
+ .comp_size_read = AST2400_VE_COMP_SIZE_READ_BACK,
+};
+
+static const struct aspeed_video_config ast2600_config = {
+ .version = 6,
+ .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] = {
0xe0ffd8ff, 0x464a1000, 0x01004649, 0x60000101, 0x00006000, 0x0f00feff,
0x00002d05, 0x00000000, 0x00000000, 0x00dbff00
@@ -640,7 +662,7 @@ static irqreturn_t aspeed_video_irq(int irq, void *arg)
if (sts & VE_INTERRUPT_COMP_COMPLETE) {
struct aspeed_video_buffer *buf;
u32 frame_size = aspeed_video_read(video,
- VE_JPEG_COMP_SIZE_READ_BACK);
+ video->config.comp_size_read);

update_perf(&video->perf);

@@ -973,7 +995,7 @@ static void aspeed_video_update_regs(struct aspeed_video *video)
FIELD_PREP(VE_COMP_CTRL_DCT_LUM, video->jpeg_quality) |
FIELD_PREP(VE_COMP_CTRL_DCT_CHR, video->jpeg_quality | 0x10);
u32 ctrl = 0;
- u32 seq_ctrl = VE_SEQ_CTRL_JPEG_MODE;
+ u32 seq_ctrl = video->config.jpeg_mode;

v4l2_dbg(1, debug, &video->v4l2_dev, "framerate(%d)\n",
video->frame_rate);
@@ -993,7 +1015,7 @@ static void aspeed_video_update_regs(struct aspeed_video *video)

/* Set control registers */
aspeed_video_update(video, VE_SEQ_CTRL,
- VE_SEQ_CTRL_JPEG_MODE | VE_SEQ_CTRL_YUV420,
+ video->config.jpeg_mode | VE_SEQ_CTRL_YUV420,
seq_ctrl);
aspeed_video_update(video, VE_CTRL, VE_CTRL_FRC, ctrl);
aspeed_video_update(video, VE_COMP_CTRL,
@@ -1790,8 +1812,18 @@ static int aspeed_video_init(struct aspeed_video *video)
return rc;
}

+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);
+
static int aspeed_video_probe(struct platform_device *pdev)
{
+ const struct aspeed_video_config *config;
+ const struct of_device_id *match;
int rc;
struct resource *res;
struct aspeed_video *video =
@@ -1815,6 +1847,13 @@ static int aspeed_video_probe(struct platform_device *pdev)
if (IS_ERR(video->base))
return PTR_ERR(video->base);

+ match = of_match_node(aspeed_video_of_match, pdev->dev.of_node);
+ if (!match)
+ return -EINVAL;
+
+ config = match->data;
+ video->config = *config;
+
rc = aspeed_video_init(video);
if (rc)
return rc;
@@ -1828,6 +1867,8 @@ static int aspeed_video_probe(struct platform_device *pdev)

aspeed_video_debugfs_create(video);

+ dev_info(video->dev, "compatible for g%d\n", config->version);
+
return 0;
}

@@ -1860,14 +1901,6 @@ static int aspeed_video_remove(struct platform_device *pdev)
return 0;
}

-static const struct of_device_id aspeed_video_of_match[] = {
- { .compatible = "aspeed,ast2400-video-engine" },
- { .compatible = "aspeed,ast2500-video-engine" },
- { .compatible = "aspeed,ast2600-video-engine" },
- {}
-};
-MODULE_DEVICE_TABLE(of, aspeed_video_of_match);
-
static struct platform_driver aspeed_video_driver = {
.driver = {
.name = DEVICE_NAME,
--
2.25.1