[PATCH v2,3/3] media: mtk-vcodec: Separating mtk encoder driver

From: Irui Wang
Date: Thu Feb 25 2021 - 02:41:50 EST

MTK H264 Encoder(VENC_SYS) and VP8 Encoder(VENC_LT_SYS) are two
independent hardware instance. They have their owner interrupt,
register mapping, and special clocks.

This patch separates them into two devices. This is a preparing
patch for adding device_link between the larbs and venc-device.
It's mainly for fixing the problem:
https://lkml.org/lkml/2019/9/3/316

Acked-by: Tiffany Lin <tiffany.lin@xxxxxxxxxxxx>
Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Signed-off-by: Maoguang Meng <maoguang.meng@xxxxxxxxxxxx>
Signed-off-by: Irui Wang <irui.wang@xxxxxxxxxxxx>
---
Change since v1:
- use the same name for both devices instead of using "name" member
- rename compatible for backward compatibility
---
.../platform/mtk-vcodec/mtk_vcodec_drv.h | 7 +-
.../platform/mtk-vcodec/mtk_vcodec_enc.c | 18 ++-
.../platform/mtk-vcodec/mtk_vcodec_enc_drv.c | 108 +++++++-----------
.../platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 40 +------
.../platform/mtk-vcodec/venc/venc_vp8_if.c | 4 +-
5 files changed, 67 insertions(+), 110 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index 3dd010cba23e..869d958d2b99 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -193,7 +193,6 @@ struct mtk_vcodec_pm {

struct mtk_vcodec_clk venc_clk;
struct device *larbvenc;
- struct device *larbvenclt;
struct device *dev;
struct mtk_vcodec_dev *mtkdev;
};
@@ -311,25 +310,25 @@ enum mtk_chip {
* @chip: chip this encoder is compatible with
*
* @uses_ext: whether the encoder uses the extended firmware messaging format
- * @has_lt_irq: whether the encoder uses the LT irq
* @min_birate: minimum supported encoding bitrate
* @max_bitrate: maximum supported encoding bitrate
* @capture_formats: array of supported capture formats
* @num_capture_formats: number of entries in capture_formats
* @output_formats: array of supported output formats
* @num_output_formats: number of entries in output_formats
+ * @core_id: stand for h264 or vp8 encode index
*/
struct mtk_vcodec_enc_pdata {
enum mtk_chip chip;

bool uses_ext;
- bool has_lt_irq;
unsigned long min_bitrate;
unsigned long max_bitrate;
const struct mtk_video_fmt *capture_formats;
size_t num_capture_formats;
const struct mtk_video_fmt *output_formats;
size_t num_output_formats;
+ int core_id;
};

#define MTK_ENC_CTX_IS_EXT(ctx) ((ctx)->dev->venc_pdata->uses_ext)
@@ -361,7 +360,6 @@ struct mtk_vcodec_enc_pdata {
*
* @dec_irq: decoder irq resource
* @enc_irq: h264 encoder irq resource
- * @enc_lt_irq: vp8 encoder irq resource
*
* @dec_mutex: decoder hardware lock
* @enc_mutex: encoder hardware lock.
@@ -397,7 +395,6 @@ struct mtk_vcodec_dev {

int dec_irq;
int enc_irq;
- int enc_lt_irq;

struct mutex dec_mutex;
struct mutex enc_mutex;
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
index 8c917969c2f1..4831052f475d 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
@@ -9,6 +9,7 @@
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include <soc/mediatek/smi.h>
+#include <linux/pm_runtime.h>

#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_enc.h"
@@ -787,7 +788,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
*/
if ((ctx->state == MTK_STATE_ABORT) || (ctx->state == MTK_STATE_FREE)) {
ret = -EIO;
- goto err_set_param;
+ goto err_start_stream;
}

/* Do the initialization when both start_streaming have been called */
@@ -799,6 +800,12 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
return 0;
}

+ ret = pm_runtime_resume_and_get(&ctx->dev->plat_dev->dev);
+ if (ret < 0) {
+ mtk_v4l2_err("pm_runtime_resume_and_get fail %d", ret);
+ goto err_start_stream;
+ }
+
mtk_venc_set_param(ctx, &param);
ret = venc_if_set_param(ctx, VENC_SET_PARAM_ENC, &param);
if (ret) {
@@ -825,6 +832,11 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
return 0;

err_set_param:
+ ret = pm_runtime_put(&ctx->dev->plat_dev->dev);
+ if (ret < 0)
+ mtk_v4l2_err("pm_runtime_put fail %d", ret);
+
+err_start_stream:
for (i = 0; i < q->num_buffers; ++i) {
struct vb2_buffer *buf = vb2_get_buffer(q, i);

@@ -878,6 +890,10 @@ static void vb2ops_venc_stop_streaming(struct vb2_queue *q)
if (ret)
mtk_v4l2_err("venc_if_deinit failed=%d", ret);

+ ret = pm_runtime_put(&ctx->dev->plat_dev->dev);
+ if (ret < 0)
+ mtk_v4l2_err("pm_runtime_put fail %d", ret);
+
ctx->state = MTK_STATE_FREE;
}

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
index be3842e6ca47..7d7b8cfc2cc5 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
@@ -49,12 +49,15 @@ static const struct mtk_video_fmt mtk_video_formats_output_mt8173[] = {
},
};

-static const struct mtk_video_fmt mtk_video_formats_capture_mt8173[] = {
+static const struct mtk_video_fmt mtk_video_formats_capture_mt8173_avc[] = {
{
.fourcc = V4L2_PIX_FMT_H264,
.type = MTK_FMT_ENC,
.num_planes = 1,
},
+};
+
+static const struct mtk_video_fmt mtk_video_formats_capture_mt8173_vp8[] = {
{
.fourcc = V4L2_PIX_FMT_VP8,
.type = MTK_FMT_ENC,
@@ -110,10 +113,11 @@ static irqreturn_t mtk_vcodec_enc_irq_handler(int irq, void *priv)
ctx = dev->curr_ctx;
spin_unlock_irqrestore(&dev->irqlock, flags);

- mtk_v4l2_debug(1, "id=%d", ctx->id);
- addr = dev->reg_base[VENC_SYS] + MTK_VENC_IRQ_ACK_OFFSET;
+ mtk_v4l2_debug(1, "id=%d coreid:%d", ctx->id, dev->venc_pdata->core_id);
+ addr = dev->reg_base[dev->venc_pdata->core_id] +
+ MTK_VENC_IRQ_ACK_OFFSET;

- ctx->irq_status = readl(dev->reg_base[VENC_SYS] +
+ ctx->irq_status = readl(dev->reg_base[dev->venc_pdata->core_id] +
(MTK_VENC_IRQ_STATUS_OFFSET));

clean_irq_status(ctx->irq_status, addr);
@@ -122,29 +126,6 @@ static irqreturn_t mtk_vcodec_enc_irq_handler(int irq, void *priv)
return IRQ_HANDLED;
}

-static irqreturn_t mtk_vcodec_enc_lt_irq_handler(int irq, void *priv)
-{
- struct mtk_vcodec_dev *dev = priv;
- struct mtk_vcodec_ctx *ctx;
- unsigned long flags;
- void __iomem *addr;
-
- spin_lock_irqsave(&dev->irqlock, flags);
- ctx = dev->curr_ctx;
- spin_unlock_irqrestore(&dev->irqlock, flags);
-
- mtk_v4l2_debug(1, "id=%d", ctx->id);
- ctx->irq_status = readl(dev->reg_base[VENC_LT_SYS] +
- (MTK_VENC_IRQ_STATUS_OFFSET));
-
- addr = dev->reg_base[VENC_LT_SYS] + MTK_VENC_IRQ_ACK_OFFSET;
-
- clean_irq_status(ctx->irq_status, addr);
-
- wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED);
- return IRQ_HANDLED;
-}
-
static int fops_vcodec_open(struct file *file)
{
struct mtk_vcodec_dev *dev = video_drvdata(file);
@@ -293,17 +274,18 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
dev->venc_pdata = of_device_get_match_data(&pdev->dev);
ret = mtk_vcodec_init_enc_pm(dev);
if (ret < 0) {
- dev_err(&pdev->dev, "Failed to get mt vcodec clock source!");
+ dev_err(&pdev->dev, "Failed to get mtk vcodec clock source!");
goto err_enc_pm;
}

- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- dev->reg_base[VENC_SYS] = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR((__force void *)dev->reg_base[VENC_SYS])) {
- ret = PTR_ERR((__force void *)dev->reg_base[VENC_SYS]);
+ pm_runtime_enable(&pdev->dev);
+
+ dev->reg_base[dev->venc_pdata->core_id] =
+ devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(dev->reg_base[dev->venc_pdata->core_id])) {
+ ret = PTR_ERR(dev->reg_base[dev->venc_pdata->core_id]);
goto err_res;
}
- mtk_v4l2_debug(2, "reg[%d] base=0x%p", VENC_SYS, dev->reg_base[VENC_SYS]);

res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
@@ -318,37 +300,13 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
mtk_vcodec_enc_irq_handler,
0, pdev->name, dev);
if (ret) {
- dev_err(&pdev->dev, "Failed to install dev->enc_irq %d (%d)",
- dev->enc_irq,
- ret);
+ dev_err(&pdev->dev,
+ "Failed to install dev->enc_irq %d (%d) core_id (%d)",
+ dev->enc_irq, ret, dev->venc_pdata->core_id);
ret = -EINVAL;
goto err_res;
}

- if (dev->venc_pdata->has_lt_irq) {
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- dev->reg_base[VENC_LT_SYS] = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR((__force void *)dev->reg_base[VENC_LT_SYS])) {
- ret = PTR_ERR((__force void *)dev->reg_base[VENC_LT_SYS]);
- goto err_res;
- }
- mtk_v4l2_debug(2, "reg[%d] base=0x%p", VENC_LT_SYS, dev->reg_base[VENC_LT_SYS]);
-
- dev->enc_lt_irq = platform_get_irq(pdev, 1);
- irq_set_status_flags(dev->enc_lt_irq, IRQ_NOAUTOEN);
- ret = devm_request_irq(&pdev->dev,
- dev->enc_lt_irq,
- mtk_vcodec_enc_lt_irq_handler,
- 0, pdev->name, dev);
- if (ret) {
- dev_err(&pdev->dev,
- "Failed to install dev->enc_lt_irq %d (%d)",
- dev->enc_lt_irq, ret);
- ret = -EINVAL;
- goto err_res;
- }
- }
-
mutex_init(&dev->enc_mutex);
mutex_init(&dev->dev_mutex);
spin_lock_init(&dev->irqlock);
@@ -409,8 +367,8 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
goto err_enc_reg;
}

- mtk_v4l2_debug(0, "encoder registered as /dev/video%d",
- vfd_enc->num);
+ mtk_v4l2_debug(0, "encoder %d registered as /dev/video%d",
+ dev->venc_pdata->core_id, vfd_enc->num);

return 0;

@@ -429,20 +387,30 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
return ret;
}

-static const struct mtk_vcodec_enc_pdata mt8173_pdata = {
+static const struct mtk_vcodec_enc_pdata mt8173_avc_pdata = {
.chip = MTK_MT8173,
- .has_lt_irq = true,
- .capture_formats = mtk_video_formats_capture_mt8173,
- .num_capture_formats = ARRAY_SIZE(mtk_video_formats_capture_mt8173),
+ .capture_formats = mtk_video_formats_capture_mt8173_avc,
+ .num_capture_formats = ARRAY_SIZE(mtk_video_formats_capture_mt8173_avc),
.output_formats = mtk_video_formats_output_mt8173,
.num_output_formats = ARRAY_SIZE(mtk_video_formats_output_mt8173),
.min_bitrate = 1,
.max_bitrate = 4000000,
+ .core_id = VENC_SYS,
+};
+
+static const struct mtk_vcodec_enc_pdata mt8173_vp8_pdata = {
+ .chip = MTK_MT8173,
+ .capture_formats = mtk_video_formats_capture_mt8173_vp8,
+ .num_capture_formats = ARRAY_SIZE(mtk_video_formats_capture_mt8173_vp8),
+ .output_formats = mtk_video_formats_output_mt8173,
+ .num_output_formats = ARRAY_SIZE(mtk_video_formats_output_mt8173),
+ .min_bitrate = 64,
+ .max_bitrate = 4000000,
+ .core_id = VENC_LT_SYS,
};

static const struct mtk_vcodec_enc_pdata mt8183_pdata = {
.chip = MTK_MT8183,
- .has_lt_irq = false,
.uses_ext = true,
.capture_formats = mtk_video_formats_capture_mt8183,
.num_capture_formats = ARRAY_SIZE(mtk_video_formats_capture_mt8183),
@@ -451,10 +419,14 @@ static const struct mtk_vcodec_enc_pdata mt8183_pdata = {
.num_output_formats = ARRAY_SIZE(mtk_video_formats_output_mt8173),
.min_bitrate = 64,
.max_bitrate = 40000000,
+ .core_id = VENC_SYS,
};

static const struct of_device_id mtk_vcodec_enc_match[] = {
- {.compatible = "mediatek,mt8173-vcodec-enc", .data = &mt8173_pdata},
+ {.compatible = "mediatek,mt8173-vcodec-enc",
+ .data = &mt8173_avc_pdata},
+ {.compatible = "mediatek,mt8173-vcodec-enc-vp8",
+ .data = &mt8173_vp8_pdata},
{.compatible = "mediatek,mt8183-vcodec-enc", .data = &mt8183_pdata},
{},
};
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
index 3b7c54d6aa8f..1b2e4930ed27 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
@@ -43,23 +43,6 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
return -ENODEV;
}
pm->larbvenc = &pdev->dev;
-
- node = of_parse_phandle(dev->of_node, "mediatek,larb", 1);
- if (!node) {
- mtk_v4l2_err("no mediatek,larb found");
- ret = -ENODEV;
- goto put_larbvenc;
- }
-
- pdev = of_find_device_by_node(node);
- of_node_put(node);
- if (!pdev) {
- mtk_v4l2_err("no mediatek,larb device found");
- ret = -ENODEV;
- goto put_larbvenc;
- }
-
- pm->larbvenclt = &pdev->dev;
pdev = mtkdev->plat_dev;
pm->dev = &pdev->dev;

@@ -71,12 +54,12 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
GFP_KERNEL);
if (!enc_clk->clk_info) {
ret = -ENOMEM;
- goto put_larbvenclt;
+ goto put_larbvenc;
}
} else {
mtk_v4l2_err("Failed to get venc clock count");
ret = -EINVAL;
- goto put_larbvenclt;
+ goto put_larbvenc;
}

for (i = 0; i < enc_clk->clk_num; i++) {
@@ -85,7 +68,7 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
"clock-names", i, &clk_info->clk_name);
if (ret) {
mtk_v4l2_err("venc failed to get clk name %d", i);
- goto put_larbvenclt;
+ goto put_larbvenc;
}
clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
clk_info->clk_name);
@@ -93,14 +76,12 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
mtk_v4l2_err("venc devm_clk_get (%d)%s fail", i,
clk_info->clk_name);
ret = PTR_ERR(clk_info->vcodec_clk);
- goto put_larbvenclt;
+ goto put_larbvenc;
}
}

return 0;

-put_larbvenclt:
- put_device(pm->larbvenclt);
put_larbvenc:
put_device(pm->larbvenc);
return ret;
@@ -108,7 +89,7 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)

void mtk_vcodec_release_enc_pm(struct mtk_vcodec_dev *mtkdev)
{
- put_device(mtkdev->pm.larbvenclt);
+ pm_runtime_disable(mtkdev->pm.dev);
put_device(mtkdev->pm.larbvenc);
}

@@ -130,18 +111,10 @@ void mtk_vcodec_enc_clock_on(struct mtk_vcodec_pm *pm)
ret = mtk_smi_larb_get(pm->larbvenc);
if (ret) {
mtk_v4l2_err("mtk_smi_larb_get larb3 fail %d", ret);
- goto larbvencerr;
- }
- ret = mtk_smi_larb_get(pm->larbvenclt);
- if (ret) {
- mtk_v4l2_err("mtk_smi_larb_get larb4 fail %d", ret);
- goto larbvenclterr;
+ goto clkerr;
}
return;

-larbvenclterr:
- mtk_smi_larb_put(pm->larbvenc);
-larbvencerr:
clkerr:
for (i -= 1; i >= 0; i--)
clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
@@ -153,7 +126,6 @@ void mtk_vcodec_enc_clock_off(struct mtk_vcodec_pm *pm)
int i = 0;

mtk_smi_larb_put(pm->larbvenc);
- mtk_smi_larb_put(pm->larbvenclt);
for (i = enc_clk->clk_num - 1; i >= 0; i--)
clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
}
diff --git a/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c b/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c
index 11abb191ada5..8267a9c4fd25 100644
--- a/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c
+++ b/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c
@@ -367,7 +367,7 @@ static int vp8_enc_encode(void *handle,

mtk_vcodec_debug_enter(inst);

- enable_irq(ctx->dev->enc_lt_irq);
+ enable_irq(ctx->dev->enc_irq);

switch (opt) {
case VENC_START_OPT_ENCODE_FRAME:
@@ -386,7 +386,7 @@ static int vp8_enc_encode(void *handle,

encode_err:

- disable_irq(ctx->dev->enc_lt_irq);
+ disable_irq(ctx->dev->enc_irq);
mtk_vcodec_debug_leave(inst);

return ret;
--
2.25.1