[PATCH v19, 12/19] media: mtk-vcodec: Generalize power and clock on/off interfaces

From: Yunfei Dong
Date: Wed Jan 12 2022 - 23:13:34 EST

Generalizes power and clock on/off interfaces to support different
hardware.

Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
.../platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 6 +-
.../platform/mtk-vcodec/mtk_vcodec_dec_hw.c | 2 +-
.../platform/mtk-vcodec/mtk_vcodec_dec_hw.h | 4 +
.../platform/mtk-vcodec/mtk_vcodec_dec_pm.c | 76 +++++++++++++++++--
.../platform/mtk-vcodec/mtk_vcodec_dec_pm.h | 8 +-
.../platform/mtk-vcodec/mtk_vcodec_drv.h | 2 +
.../platform/mtk-vcodec/mtk_vcodec_util.c | 59 +++++++++++---
.../platform/mtk-vcodec/mtk_vcodec_util.h | 8 +-
.../media/platform/mtk-vcodec/vdec_drv_if.c | 21 ++---
9 files changed, 146 insertions(+), 40 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 40d1f16a0a25..ffc4ba698876 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -46,7 +46,7 @@ static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv)
void __iomem *vdec_misc_addr = dev->reg_base[VDEC_MISC] +
VDEC_IRQ_CFG_REG;

- ctx = mtk_vcodec_get_curr_ctx(dev);
+ ctx = mtk_vcodec_get_curr_ctx(dev, MTK_VDEC_CORE);

/* check if HW active or not */
cg_status = readl(dev->reg_base[0]);
@@ -193,7 +193,7 @@ 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->pm);
+ ret = mtk_vcodec_dec_pw_on(dev, MTK_VDEC_LAT0);
if (ret < 0)
goto err_load_fw;
/*
@@ -253,7 +253,7 @@ static int fops_vcodec_release(struct file *file)
mtk_vcodec_dec_release(ctx);

if (v4l2_fh_is_singular(&ctx->fh))
- mtk_vcodec_dec_pw_off(&dev->pm);
+ 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_hw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
index 6b248dd94dd3..f2f5d8869c70 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c
@@ -65,7 +65,7 @@ static irqreturn_t mtk_vdec_hw_irq_handler(int irq, void *priv)
void __iomem *vdec_misc_addr = dev->reg_base[VDEC_HW_MISC] +
VDEC_IRQ_CFG_REG;

- ctx = mtk_vcodec_get_curr_ctx(dev->main_dev);
+ ctx = mtk_vcodec_get_curr_ctx(dev->main_dev, dev->hw_idx);

/* check if HW active or not */
cg_status = readl(dev->reg_base[VDEC_HW_SYS]);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
index 5c2cfeaa9d9f..a63e4b1b81c3 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.h
@@ -35,6 +35,8 @@ enum mtk_vdec_hw_reg_idx {
* @main_dev: main device
* @reg_base: mapped address of MTK Vcodec registers.
*
+ * @curr_ctx: the context that is waiting for codec hardware
+ *
* @dec_irq : decoder irq resource
* @pm : power management control
* @hw_idx : each hardware index
@@ -44,6 +46,8 @@ struct mtk_vdec_hw_dev {
struct mtk_vcodec_dev *main_dev;
void __iomem *reg_base[VDEC_HW_MAX];

+ struct mtk_vcodec_ctx *curr_ctx;
+
int dec_irq;
struct mtk_vcodec_pm pm;
int hw_idx;
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 64535d33bff8..f5b1e1aab301 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
@@ -5,11 +5,13 @@
*/

#include <linux/clk.h>
+#include <linux/interrupt.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <soc/mediatek/smi.h>

+#include "mtk_vcodec_dec_hw.h"
#include "mtk_vcodec_dec_pm.h"
#include "mtk_vcodec_util.h"

@@ -85,10 +87,23 @@ void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm)
}
EXPORT_SYMBOL_GPL(mtk_vcodec_release_dec_pm);

-int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
+int mtk_vcodec_dec_pw_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
+ 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);
@@ -97,21 +112,50 @@ int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_on);

-void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
+void mtk_vcodec_dec_pw_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
+ 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_pm *pm)
+void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
- struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
- int ret, i = 0;
+ 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);
if (ret) {
@@ -134,11 +178,27 @@ void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_on);

-void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
+void mtk_vcodec_dec_clock_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
- struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
- int i = 0;
+ struct mtk_vdec_hw_dev *subdev_dev;
+ struct mtk_vcodec_pm *pm;
+ struct mtk_vcodec_clk *dec_clk;
+ int 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;
+ 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);
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 08769c7648eb..ff979d384f4c 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 +12,9 @@
int mtk_vcodec_init_dec_pm(struct platform_device *pdev, struct mtk_vcodec_pm *pm);
void mtk_vcodec_release_dec_pm(struct mtk_vcodec_pm *pm);

-int mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm);
-void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm);
-void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm);
-void mtk_vcodec_dec_clock_off(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);

#endif /* _MTK_VCODEC_DEC_PM_H_ */
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index c9a377035e80..4d3fd2a7a56e 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -284,6 +284,7 @@ struct vdec_pic_info {
* @decoded_frame_cnt: number of decoded frames
* @lock: protect variables accessed by V4L2 threads and worker thread such as
* mtk_video_dec_buf.
+ * @hw_id: hardware index used to identify different hardware.
*
* @msg_queue: msg queue used to store lat buffer information.
*/
@@ -328,6 +329,7 @@ struct mtk_vcodec_ctx {

int decoded_frame_cnt;
struct mutex lock;
+ int hw_id;

struct vdec_msg_queue msg_queue;
};
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
index 5bac820a47fc..ace78c4b5b9e 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
@@ -6,7 +6,10 @@
*/

#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>

+#include "mtk_vcodec_dec_hw.h"
#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_util.h"

@@ -71,25 +74,59 @@ void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
}
EXPORT_SYMBOL(mtk_vcodec_mem_free);

-void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev,
- struct mtk_vcodec_ctx *ctx)
+void *mtk_vcodec_get_hw_dev(struct mtk_vcodec_dev *dev, int hw_idx)
{
- unsigned long flags;
+ if (hw_idx >= MTK_VDEC_HW_MAX || hw_idx < 0 || !dev->subdev_dev[hw_idx]) {
+ mtk_v4l2_err("hw idx is out of range:%d", hw_idx);
+ return NULL;
+ }
+
+ return dev->subdev_dev[hw_idx];
+}
+EXPORT_SYMBOL(mtk_vcodec_get_hw_dev);

- spin_lock_irqsave(&dev->irqlock, flags);
- dev->curr_ctx = ctx;
- spin_unlock_irqrestore(&dev->irqlock, flags);
+void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *vdec_dev,
+ struct mtk_vcodec_ctx *ctx, int hw_idx)
+{
+ unsigned long flags;
+ struct mtk_vdec_hw_dev *subdev_dev;
+
+ spin_lock_irqsave(&vdec_dev->irqlock, flags);
+ 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");
+ spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
+ return;
+ }
+ subdev_dev->curr_ctx = ctx;
+ } else {
+ vdec_dev->curr_ctx = ctx;
+ }
+ spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
}
EXPORT_SYMBOL(mtk_vcodec_set_curr_ctx);

-struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev)
+struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *vdec_dev,
+ unsigned int hw_idx)
{
unsigned long flags;
struct mtk_vcodec_ctx *ctx;
-
- spin_lock_irqsave(&dev->irqlock, flags);
- ctx = dev->curr_ctx;
- spin_unlock_irqrestore(&dev->irqlock, flags);
+ struct mtk_vdec_hw_dev *subdev_dev;
+
+ spin_lock_irqsave(&vdec_dev->irqlock, flags);
+ 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");
+ spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
+ return NULL;
+ }
+ ctx = subdev_dev->curr_ctx;
+ } else {
+ ctx = vdec_dev->curr_ctx;
+ }
+ spin_unlock_irqrestore(&vdec_dev->irqlock, flags);
return ctx;
}
EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.h
index 87c3d6d4bfa7..71956627a0e2 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.h
@@ -54,8 +54,10 @@ int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data,
struct mtk_vcodec_mem *mem);
void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
struct mtk_vcodec_mem *mem);
-void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev,
- struct mtk_vcodec_ctx *ctx);
-struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev);
+void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *vdec_dev,
+ struct mtk_vcodec_ctx *ctx, int hw_idx);
+struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *vdec_dev,
+ unsigned int hw_idx);
+void *mtk_vcodec_get_hw_dev(struct mtk_vcodec_dev *dev, int hw_idx);

#endif /* _MTK_VCODEC_UTIL_H_ */
diff --git a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
index 42008243ceac..05a5b240e906 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.c
@@ -24,21 +24,24 @@ int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
break;
case V4L2_PIX_FMT_H264:
ctx->dec_if = &vdec_h264_if;
+ ctx->hw_id = MTK_VDEC_CORE;
break;
case V4L2_PIX_FMT_VP8:
ctx->dec_if = &vdec_vp8_if;
+ ctx->hw_id = MTK_VDEC_CORE;
break;
case V4L2_PIX_FMT_VP9:
ctx->dec_if = &vdec_vp9_if;
+ ctx->hw_id = MTK_VDEC_CORE;
break;
default:
return -EINVAL;
}

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

return ret;
@@ -69,13 +72,11 @@ int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,

mtk_vdec_lock(ctx);

- mtk_vcodec_set_curr_ctx(ctx->dev, ctx);
- mtk_vcodec_dec_clock_on(&ctx->dev->pm);
- enable_irq(ctx->dev->dec_irq);
+ 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);
- disable_irq(ctx->dev->dec_irq);
- mtk_vcodec_dec_clock_off(&ctx->dev->pm);
- mtk_vcodec_set_curr_ctx(ctx->dev, NULL);
+ 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);

@@ -103,9 +104,9 @@ void vdec_if_deinit(struct mtk_vcodec_ctx *ctx)
return;

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

ctx->drv_handle = NULL;
--
2.25.1