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Subject[PATCH v2, 01/12] media: mtk-vcodec: Add vdec enable/disable hardware helpers
Date
From: Yunfei Dong <yunfei.dong@mediatek.corp-partner.google.com>

Lock, power and clock are highly coupled operations. Adds vdec
enable/disable hardware helpers and uses them.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
.../platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 5 -
.../platform/mtk-vcodec/mtk_vcodec_dec_pm.c | 168 +++++++++++-------
.../platform/mtk-vcodec/mtk_vcodec_dec_pm.h | 6 +-
.../media/platform/mtk-vcodec/vdec_drv_if.c | 20 +--
.../platform/mtk-vcodec/vdec_msg_queue.c | 2 +
5 files changed, 117 insertions(+), 84 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index d44894fa2f6e..fc3e272d2059 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -195,9 +195,6 @@ static int fops_vcodec_open(struct file *file)
mtk_vcodec_dec_set_default_params(ctx);

if (v4l2_fh_is_singular(&ctx->fh)) {
- ret = mtk_vcodec_dec_pw_on(dev, MTK_VDEC_LAT0);
- if (ret < 0)
- goto err_load_fw;
/*
* Does nothing if firmware was already loaded.
*/
@@ -254,8 +251,6 @@ static int fops_vcodec_release(struct file *file)
v4l2_m2m_ctx_release(ctx->m2m_ctx);
mtk_vcodec_dec_release(ctx);

- if (v4l2_fh_is_singular(&ctx->fh))
- mtk_vcodec_dec_pw_off(dev, MTK_VDEC_LAT0);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
index b9f5ef979c69..c2ed79bce686 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
@@ -80,74 +80,31 @@ int mtk_vcodec_init_dec_clk(struct platform_device *pdev,
}
EXPORT_SYMBOL_GPL(mtk_vcodec_init_dec_clk);

-int mtk_vcodec_dec_pw_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
+static int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
{
- struct mtk_vdec_hw_dev *subdev_dev;
- struct mtk_vcodec_pm *pm;
int ret;

- if (vdec_dev->vdec_pdata->is_subdev_supported) {
- subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
- if (!subdev_dev) {
- mtk_v4l2_err("Failed to get hw dev\n");
- return -EINVAL;
- }
- pm = &subdev_dev->pm;
- } else {
- pm = &vdec_dev->pm;
- }
-
ret = pm_runtime_resume_and_get(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_resume_and_get fail %d", ret);

return ret;
}
-EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_on);

-void mtk_vcodec_dec_pw_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
+static void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
{
- struct mtk_vdec_hw_dev *subdev_dev;
- struct mtk_vcodec_pm *pm;
int ret;

- if (vdec_dev->vdec_pdata->is_subdev_supported) {
- subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
- if (!subdev_dev) {
- mtk_v4l2_err("Failed to get hw dev\n");
- return;
- }
- pm = &subdev_dev->pm;
- } else {
- pm = &vdec_dev->pm;
- }
-
ret = pm_runtime_put_sync(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
}
-EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_off);

-void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
+static void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
{
- struct mtk_vdec_hw_dev *subdev_dev;
- struct mtk_vcodec_pm *pm;
struct mtk_vcodec_clk *dec_clk;
int ret, i;

- if (vdec_dev->vdec_pdata->is_subdev_supported) {
- subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
- if (!subdev_dev) {
- mtk_v4l2_err("Failed to get hw dev\n");
- return;
- }
- pm = &subdev_dev->pm;
- enable_irq(subdev_dev->dec_irq);
- } else {
- pm = &vdec_dev->pm;
- enable_irq(vdec_dev->dec_irq);
- }
-
dec_clk = &pm->vdec_clk;
for (i = 0; i < dec_clk->clk_num; i++) {
ret = clk_prepare_enable(dec_clk->clk_info[i].vcodec_clk);
@@ -169,31 +126,120 @@ void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
for (i -= 1; i >= 0; i--)
clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
}
-EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_on);

-void mtk_vcodec_dec_clock_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
+static void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
{
- struct mtk_vdec_hw_dev *subdev_dev;
- struct mtk_vcodec_pm *pm;
struct mtk_vcodec_clk *dec_clk;
int i;

+ dec_clk = &pm->vdec_clk;
+ mtk_smi_larb_put(pm->larbvdec);
+ for (i = dec_clk->clk_num - 1; i >= 0; i--)
+ clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
+}
+
+static void mtk_vcodec_dec_enable_irq(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
+ {
+ struct mtk_vdec_hw_dev *subdev_dev;
+
+ if (!test_bit(hw_idx, vdec_dev->subdev_bitmap))
+ return;
+
if (vdec_dev->vdec_pdata->is_subdev_supported) {
subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
- if (!subdev_dev) {
+ if (subdev_dev)
+ enable_irq(subdev_dev->dec_irq);
+ else
+ mtk_v4l2_err("Failed to get hw dev\n");
+ } else {
+ enable_irq(vdec_dev->dec_irq);
+ }
+}
+
+static void mtk_vcodec_dec_disable_irq(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
+{
+ struct mtk_vdec_hw_dev *subdev_dev;
+
+ if (!test_bit(hw_idx, vdec_dev->subdev_bitmap))
+ return;
+
+ if (vdec_dev->vdec_pdata->is_subdev_supported) {
+ subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
+ if (subdev_dev)
+ disable_irq(subdev_dev->dec_irq);
+ else
mtk_v4l2_err("Failed to get hw dev\n");
- return;
- }
- pm = &subdev_dev->pm;
- disable_irq(subdev_dev->dec_irq);
} else {
- pm = &vdec_dev->pm;
disable_irq(vdec_dev->dec_irq);
}
+}

- dec_clk = &pm->vdec_clk;
- mtk_smi_larb_put(pm->larbvdec);
- for (i = dec_clk->clk_num - 1; i >= 0; i--)
- clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
+static struct mtk_vcodec_pm *mtk_vcodec_dec_get_pm(struct mtk_vcodec_dev *vdec_dev,
+ int hw_idx)
+{
+ struct mtk_vdec_hw_dev *subdev_dev;
+
+ if (!test_bit(hw_idx, vdec_dev->subdev_bitmap))
+ return NULL;
+
+ if (vdec_dev->vdec_pdata->is_subdev_supported) {
+ subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
+ if (subdev_dev)
+ return &subdev_dev->pm;
+
+ mtk_v4l2_err("Failed to get hw dev\n");
+ return NULL;
+ }
+
+ return &vdec_dev->pm;
+}
+
+static void mtk_vcodec_dec_child_dev_on(struct mtk_vcodec_dev *vdec_dev,
+ int hw_idx)
+{
+ struct mtk_vcodec_pm *pm;
+
+ pm = mtk_vcodec_dec_get_pm(vdec_dev, hw_idx);
+ if (pm) {
+ mtk_vcodec_dec_pw_on(pm);
+ mtk_vcodec_dec_clock_on(pm);
+ }
+}
+
+static void mtk_vcodec_dec_child_dev_off(struct mtk_vcodec_dev *vdec_dev,
+ int hw_idx)
+{
+ struct mtk_vcodec_pm *pm;
+
+ pm = mtk_vcodec_dec_get_pm(vdec_dev, hw_idx);
+ if (pm) {
+ mtk_vcodec_dec_clock_off(pm);
+ mtk_vcodec_dec_pw_off(pm);
+ }
+}
+
+void mtk_vcodec_dec_enable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx)
+{
+ mutex_lock(&ctx->dev->dec_mutex[hw_idx]);
+
+ if (IS_VDEC_LAT_ARCH(ctx->dev->vdec_pdata->hw_arch) &&
+ hw_idx == MTK_VDEC_CORE)
+ mtk_vcodec_dec_child_dev_on(ctx->dev, MTK_VDEC_LAT0);
+ mtk_vcodec_dec_child_dev_on(ctx->dev, hw_idx);
+
+ mtk_vcodec_dec_enable_irq(ctx->dev, hw_idx);
+}
+EXPORT_SYMBOL_GPL(mtk_vcodec_dec_enable_hardware);
+
+void mtk_vcodec_dec_disable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx)
+{
+ mtk_vcodec_dec_disable_irq(ctx->dev, hw_idx);
+
+ mtk_vcodec_dec_child_dev_off(ctx->dev, hw_idx);
+ if (IS_VDEC_LAT_ARCH(ctx->dev->vdec_pdata->hw_arch) &&
+ hw_idx == MTK_VDEC_CORE)
+ mtk_vcodec_dec_child_dev_off(ctx->dev, MTK_VDEC_LAT0);
+
+ mutex_unlock(&ctx->dev->dec_mutex[hw_idx]);
}
-EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_off);
+EXPORT_SYMBOL_GPL(mtk_vcodec_dec_disable_hardware);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
index c4121df9764f..b420739b373d 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h
@@ -12,9 +12,7 @@
int mtk_vcodec_init_dec_clk(struct platform_device *pdev,
struct mtk_vcodec_pm *pm);

-int mtk_vcodec_dec_pw_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx);
-void mtk_vcodec_dec_pw_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx);
-void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx);
-void mtk_vcodec_dec_clock_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx);
+void mtk_vcodec_dec_enable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx);
+void mtk_vcodec_dec_disable_hardware(struct mtk_vcodec_ctx *ctx, int hw_idx);

#endif /* _MTK_VCODEC_DEC_PM_H_ */
diff --git a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
index 05a5b240e906..c93dd0ea3537 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
@@ -38,11 +38,9 @@ int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
return -EINVAL;
}

- mtk_vdec_lock(ctx);
- mtk_vcodec_dec_clock_on(ctx->dev, ctx->hw_id);
+ mtk_vcodec_dec_enable_hardware(ctx, ctx->hw_id);
ret = ctx->dec_if->init(ctx);
- mtk_vcodec_dec_clock_off(ctx->dev, ctx->hw_id);
- mtk_vdec_unlock(ctx);
+ mtk_vcodec_dec_disable_hardware(ctx, ctx->hw_id);

return ret;
}
@@ -70,15 +68,11 @@ int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
if (!ctx->drv_handle)
return -EIO;

- mtk_vdec_lock(ctx);
-
+ mtk_vcodec_dec_enable_hardware(ctx, ctx->hw_id);
mtk_vcodec_set_curr_ctx(ctx->dev, ctx, ctx->hw_id);
- mtk_vcodec_dec_clock_on(ctx->dev, ctx->hw_id);
ret = ctx->dec_if->decode(ctx->drv_handle, bs, fb, res_chg);
- mtk_vcodec_dec_clock_off(ctx->dev, ctx->hw_id);
mtk_vcodec_set_curr_ctx(ctx->dev, NULL, ctx->hw_id);
-
- mtk_vdec_unlock(ctx);
+ mtk_vcodec_dec_disable_hardware(ctx, ctx->hw_id);

return ret;
}
@@ -103,11 +97,9 @@ void vdec_if_deinit(struct mtk_vcodec_ctx *ctx)
if (!ctx->drv_handle)
return;

- mtk_vdec_lock(ctx);
- mtk_vcodec_dec_clock_on(ctx->dev, ctx->hw_id);
+ mtk_vcodec_dec_enable_hardware(ctx, ctx->hw_id);
ctx->dec_if->deinit(ctx->drv_handle);
- mtk_vcodec_dec_clock_off(ctx->dev, ctx->hw_id);
- mtk_vdec_unlock(ctx);
+ mtk_vcodec_dec_disable_hardware(ctx, ctx->hw_id);

ctx->drv_handle = NULL;
}
diff --git a/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c b/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c
index 576e08200a10..900d04fd4e66 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c
@@ -212,11 +212,13 @@ static void vdec_msg_queue_core_work(struct work_struct *work)
return;

ctx = lat_buf->ctx;
+ mtk_vcodec_dec_enable_hardware(ctx, MTK_VDEC_CORE);
mtk_vcodec_set_curr_ctx(dev, ctx, MTK_VDEC_CORE);

lat_buf->core_decode(lat_buf);

mtk_vcodec_set_curr_ctx(dev, NULL, MTK_VDEC_CORE);
+ mtk_vcodec_dec_disable_hardware(ctx, MTK_VDEC_CORE);
vdec_msg_queue_qbuf(&ctx->msg_queue.lat_ctx, lat_buf);

if (!list_empty(&ctx->msg_queue.lat_ctx.ready_queue)) {
--
2.25.1
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