RE: [RESEND PATCH v7 2/4] media: chips-media: wave5: Support runtime suspend/resume

From: jackson . lee
Date: Mon Sep 09 2024 - 03:56:02 EST

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In reply to: sebastian.fricke@xxxxxxxxxxxxx: "Re: [RESEND PATCH v7 2/4] media: chips-media: wave5: Support runtime suspend/resume"
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Hi Sebastian

Many thanks

Jackson

> -----Original Message-----
> From: sebastian.fricke@xxxxxxxxxxxxx <sebastian.fricke@xxxxxxxxxxxxx>
> Sent: Monday, September 9, 2024 2:47 PM
> To: jackson.lee <jackson.lee@xxxxxxxxxxxxxxx>
> Cc: Nicolas Dufresne <nicolas@xxxxxxxxxxxx>; mchehab@xxxxxxxxxx; linux-
> media@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; hverkuil@xxxxxxxxx;
> Nas Chung <nas.chung@xxxxxxxxxxxxxxx>; lafley.kim
> <lafley.kim@xxxxxxxxxxxxxxx>; b-brnich@xxxxxx
> Subject: Re: [RESEND PATCH v7 2/4] media: chips-media: wave5: Support
> runtime suspend/resume
>
> Hey Jackson,
>
> On 09.09.2024 01:21, jackson.lee wrote:
> >Hi Nicolas
> >
> >> -----Original Message-----
> >> From: Nicolas Dufresne <nicolas@xxxxxxxxxxxx>
> >> Sent: Saturday, September 7, 2024 4:27 AM
> >> To: jackson.lee <jackson.lee@xxxxxxxxxxxxxxx>; mchehab@xxxxxxxxxx;
> >> sebastian.fricke@xxxxxxxxxxxxx
> >> Cc: linux-media@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> >> hverkuil@xxxxxxxxx; Nas Chung <nas.chung@xxxxxxxxxxxxxxx>; lafley.kim
> >> <lafley.kim@xxxxxxxxxxxxxxx>; b-brnich@xxxxxx
> >> Subject: Re: [RESEND PATCH v7 2/4] media: chips-media: wave5: Support
> >> runtime suspend/resume
> >>
> >> Hi Again,
> >>
> >> Le vendredi 06 septembre 2024 à 13:08 -0400, Nicolas Dufresne a écrit :
> >> > Hi,
> >> >
> >> > Le lundi 12 août 2024 à 16:08 +0900, Jackson.lee a écrit :
> >> > > Add support for runtime suspend/resume in the encoder and decoder.
> >> > > This is achieved by saving the VPU state and powering it off
> >> > > while the
> >> VPU idle.
> >> >
> >> > If you don't, I'll edit to "while the VPU *is* idle".
> >> >
> >> > regards,
> >> > Nicolas
> >> >
> >> > >
> >> > > Signed-off-by: Jackson.lee <jackson.lee@xxxxxxxxxxxxxxx>
> >> > > Signed-off-by: Nas Chung <nas.chung@xxxxxxxxxxxxxxx>
> >> > > Reviewed-by: Nicolas Dufresne <nicolas.dufresne@xxxxxxxxxxxxx>
> >> > > ---
> >> > > .../platform/chips-media/wave5/wave5-helper.c | 13 -----
> >> > > .../platform/chips-media/wave5/wave5-hw.c | 4 +-
> >> > > .../chips-media/wave5/wave5-vpu-dec.c | 21 ++++++--
> >> > > .../chips-media/wave5/wave5-vpu-enc.c | 20 ++++++--
> >> > > .../platform/chips-media/wave5/wave5-vpu.c | 50
> +++++++++++++++++++
> >> > > .../platform/chips-media/wave5/wave5-vpuapi.c | 33 ++++++++++--
> >> > > .../media/platform/chips-media/wave5/wave5.h | 3 ++
> >> > > 7 files changed, 118 insertions(+), 26 deletions(-)
> >> > >
> >> > > diff --git
> >> > > a/drivers/media/platform/chips-media/wave5/wave5-helper.c
> >> > > b/drivers/media/platform/chips-media/wave5/wave5-helper.c
> >> > > index d60841c54a80..a20d84dbe3aa 100644
> >> > > --- a/drivers/media/platform/chips-media/wave5/wave5-helper.c
> >> > > +++ b/drivers/media/platform/chips-media/wave5/wave5-helper.c
> >> > > @@ -58,7 +58,6 @@ int wave5_vpu_release_device(struct file *filp,
> >> > > char *name)
> >> > > {
> >> > > struct vpu_instance *inst = wave5_to_vpu_inst(filp-
> >private_data);
> >> > > - struct vpu_device *dev = inst->dev;
> >> > > int ret = 0;
> >> > >
> >> > > v4l2_m2m_ctx_release(inst->v4l2_fh.m2m_ctx);
> >> > > @@ -78,18 +77,6 @@ int wave5_vpu_release_device(struct file *filp,
> >> > > }
> >> > >
> >> > > wave5_cleanup_instance(inst);
> >> > > - if (dev->irq < 0) {
> >> > > - ret = mutex_lock_interruptible(&dev->dev_lock);
> >> > > - if (ret)
> >> > > - return ret;
> >> > > -
> >> > > - if (list_empty(&dev->instances)) {
> >> > > - dev_dbg(dev->dev, "Disabling the hrtimer\n");
> >> > > - hrtimer_cancel(&dev->hrtimer);
> >> > > - }
> >> > > -
> >> > > - mutex_unlock(&dev->dev_lock);
> >> > > - }
> >> > >
> >> > > return ret;
> >> > > }
> >> > > diff --git a/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> > > b/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> > > index 2a98bab446d0..c8a905994109 100644
> >> > > --- a/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> > > +++ b/drivers/media/platform/chips-media/wave5/wave5-hw.c
> >> > > @@ -1228,8 +1228,8 @@ int wave5_vpu_re_init(struct device *dev,
> >> > > u8 *fw,
> >> size_t size)
> >> > > return setup_wave5_properties(dev); }
> >> > >
> >> > > -static int wave5_vpu_sleep_wake(struct device *dev, bool
> >> > > i_sleep_wake,
> >> const uint16_t *code,
> >> > > - size_t size)
> >> > > +int wave5_vpu_sleep_wake(struct device *dev, bool i_sleep_wake,
> >> > > +const
> >> uint16_t *code,
> >> > > + size_t size)
> >> > > {
> >> > > u32 reg_val;
> >> > > struct vpu_buf *common_vb;
> >> > > diff --git
> >> > > a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> >> > > b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> >> > > index 0c5c9a8de91f..698c83e3082e 100644
> >> > > --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> >> > > +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
> >> > > @@ -5,6 +5,7 @@
> >> > > * Copyright (C) 2021-2023 CHIPS&MEDIA INC
> >> > > */
> >> > >
> >> > > +#include <linux/pm_runtime.h>
> >> > > #include "wave5-helper.h"
> >> > >
> >> > > #define VPU_DEC_DEV_NAME "C&M Wave5 VPU decoder"
> >> > > @@ -518,6 +519,8 @@ static void
> >> > > wave5_vpu_dec_finish_decode(struct
> >> vpu_instance *inst)
> >> > > if (q_status.report_queue_count == 0 &&
> >> > > (q_status.instance_queue_count == 0 ||
> >> dec_info.sequence_changed)) {
> >> > > dev_dbg(inst->dev->dev, "%s: finishing job.\n",
> __func__);
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > v4l2_m2m_job_finish(inst->v4l2_m2m_dev, m2m_ctx);
> >> > > }
> >> > > }
> >> > > @@ -1398,6 +1401,7 @@ static int
> >> > > wave5_vpu_dec_start_streaming(struct
> >> vb2_queue *q, unsigned int count
> >> > > int ret = 0;
> >> > >
> >> > > dev_dbg(inst->dev->dev, "%s: type: %u\n", __func__, q->type);
> >> > > + pm_runtime_resume_and_get(inst->dev->dev);
> >> > >
> >> > > v4l2_m2m_update_start_streaming_state(m2m_ctx, q);
> >> > >
> >> > > @@ -1429,13 +1433,15 @@ static int
> >> wave5_vpu_dec_start_streaming(struct vb2_queue *q, unsigned int count
> >> > > if (ret)
> >> > > goto return_buffers;
> >> > > }
> >> > > -
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > return ret;
> >> > >
> >> > > free_bitstream_vbuf:
> >> > > wave5_vdi_free_dma_memory(inst->dev, &inst->bitstream_vbuf);
> >> > > return_buffers:
> >> > > wave5_return_bufs(q, VB2_BUF_STATE_QUEUED);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > return ret;
> >> > > }
> >> > >
> >> > > @@ -1521,6 +1527,7 @@ static void
> >> > > wave5_vpu_dec_stop_streaming(struct
> >> vb2_queue *q)
> >> > > bool check_cmd = TRUE;
> >> > >
> >> > > dev_dbg(inst->dev->dev, "%s: type: %u\n", __func__, q->type);
> >> > > + pm_runtime_resume_and_get(inst->dev->dev);
> >> > >
> >> > > while (check_cmd) {
> >> > > struct queue_status_info q_status; @@ -1544,6 +1551,9
> @@
> >> static
> >> > > void wave5_vpu_dec_stop_streaming(struct vb2_queue *q)
> >> > > streamoff_output(q);
> >> > > else
> >> > > streamoff_capture(q);
> >> > > +
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > }
> >> > >
> >> > > static const struct vb2_ops wave5_vpu_dec_vb2_ops = { @@ -1630,7
> >> > > +1640,7 @@ static void wave5_vpu_dec_device_run(void *priv)
> >> > > int ret = 0;
> >> > >
> >> > > dev_dbg(inst->dev->dev, "%s: Fill the ring buffer with new
> >> > > bitstream data", __func__);
> >> > > -
> >> > > + pm_runtime_resume_and_get(inst->dev->dev);
> >> > > ret = fill_ringbuffer(inst);
> >> > > if (ret) {
> >> > > dev_warn(inst->dev->dev, "Filling ring buffer
> failed\n"); @@
> >> > > -1713,6 +1723,8 @@ static void wave5_vpu_dec_device_run(void
> >> > > *priv)
> >> > >
> >> > > finish_job_and_return:
> >> > > dev_dbg(inst->dev->dev, "%s: leave and finish job",
> __func__);
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > v4l2_m2m_job_finish(inst->v4l2_m2m_dev, m2m_ctx); }
> >> > >
> >> > > @@ -1879,9 +1891,8 @@ static int wave5_vpu_open_dec(struct file
> *filp)
> >> > > if (ret)
> >> > > goto cleanup_inst;
> >> > >
> >> > > - if (dev->irq < 0 && !hrtimer_active(&dev->hrtimer) &&
> >> list_empty(&dev->instances))
> >> > > - hrtimer_start(&dev->hrtimer, ns_to_ktime(dev-
> >> >vpu_poll_interval * NSEC_PER_MSEC),
> >> > > - HRTIMER_MODE_REL_PINNED);
> >> > > + if (list_empty(&dev->instances))
> >> > > + pm_runtime_use_autosuspend(inst->dev->dev);
> >> > >
> >> > > list_add_tail(&inst->list, &dev->instances);
> >> > >
> >> > > diff --git
> >> > > a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> >> > > b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> >> > > index b731decbfda6..985de0c293e2 100644
> >> > > --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> >> > > +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
> >> > > @@ -5,6 +5,7 @@
> >> > > * Copyright (C) 2021-2023 CHIPS&MEDIA INC
> >> > > */
> >> > >
> >> > > +#include <linux/pm_runtime.h>
> >> > > #include "wave5-helper.h"
> >> > >
> >> > > #define VPU_ENC_DEV_NAME "C&M Wave5 VPU encoder"
> >> > > @@ -1310,6 +1311,7 @@ static int
> >> > > wave5_vpu_enc_start_streaming(struct
> >> vb2_queue *q, unsigned int count
> >> > > struct v4l2_m2m_ctx *m2m_ctx = inst->v4l2_fh.m2m_ctx;
> >> > > int ret = 0;
> >> > >
> >> > > + pm_runtime_resume_and_get(inst->dev->dev);
> >> > > v4l2_m2m_update_start_streaming_state(m2m_ctx, q);
> >> > >
> >> > > if (inst->state == VPU_INST_STATE_NONE && q->type ==
> >> > > V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { @@ -1364,9 +1366,13 @@
> >> > > static int
> >> wave5_vpu_enc_start_streaming(struct vb2_queue *q, unsigned int count
> >> > > if (ret)
> >> > > goto return_buffers;
> >> > >
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > return 0;
> >> > > return_buffers:
> >> > > wave5_return_bufs(q, VB2_BUF_STATE_QUEUED);
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > return ret;
> >> > > }
> >> > >
> >> > > @@ -1408,6 +1414,7 @@ static void
> >> > > wave5_vpu_enc_stop_streaming(struct
> >> vb2_queue *q)
> >> > > */
> >> > >
> >> > > dev_dbg(inst->dev->dev, "%s: type: %u\n", __func__, q->type);
> >> > > + pm_runtime_resume_and_get(inst->dev->dev);
> >> > >
> >> > > if (wave5_vpu_both_queues_are_streaming(inst))
> >> > > switch_state(inst, VPU_INST_STATE_STOP); @@ -1432,6
> +1439,9
> >> @@
> >> > > static void wave5_vpu_enc_stop_streaming(struct vb2_queue *q)
> >> > > streamoff_output(inst, q);
> >> > > else
> >> > > streamoff_capture(inst, q);
> >> > > +
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > }
> >> > >
> >> > > static const struct vb2_ops wave5_vpu_enc_vb2_ops = { @@ -1478,6
> >> > > +1488,7 @@ static void wave5_vpu_enc_device_run(void *priv)
> >> > > u32 fail_res = 0;
> >> > > int ret = 0;
> >> > >
> >> > > + pm_runtime_resume_and_get(inst->dev->dev);
> >> > > switch (inst->state) {
> >> > > case VPU_INST_STATE_PIC_RUN:
> >> > > ret = start_encode(inst, &fail_res); @@ -1491,6
> +1502,8 @@
> >> static
> >> > > void wave5_vpu_enc_device_run(void *priv)
> >> > > break;
> >> > > }
> >> > > dev_dbg(inst->dev->dev, "%s: leave with active job",
> >> __func__);
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > return;
> >> > > default:
> >> > > WARN(1, "Execution of a job in state %s is invalid.\n",
> @@
> >> > > -1498,6 +1511,8 @@ static void wave5_vpu_enc_device_run(void *priv)
> >> > > break;
> >> > > }
> >> > > dev_dbg(inst->dev->dev, "%s: leave and finish job",
> __func__);
> >> > > + pm_runtime_mark_last_busy(inst->dev->dev);
> >> > > + pm_runtime_put_autosuspend(inst->dev->dev);
> >> > > v4l2_m2m_job_finish(inst->v4l2_m2m_dev, m2m_ctx); }
> >> > >
> >> > > @@ -1739,9 +1754,8 @@ static int wave5_vpu_open_enc(struct file
> *filp)
> >> > > if (ret)
> >> > > goto cleanup_inst;
> >> > >
> >> > > - if (dev->irq < 0 && !hrtimer_active(&dev->hrtimer) &&
> >> list_empty(&dev->instances))
> >> > > - hrtimer_start(&dev->hrtimer, ns_to_ktime(dev-
> >> >vpu_poll_interval * NSEC_PER_MSEC),
> >> > > - HRTIMER_MODE_REL_PINNED);
> >> > > + if (list_empty(&dev->instances))
> >> > > + pm_runtime_use_autosuspend(inst->dev->dev);
> >> > >
> >> > > list_add_tail(&inst->list, &dev->instances);
> >> > >
> >> > > diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> >> > > b/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> >> > > index 7273254ecb03..41c4bf64f27d 100644
> >> > > --- a/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> >> > > +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu.c
> >> > > @@ -10,6 +10,7 @@
> >> > > #include <linux/clk.h>
> >> > > #include <linux/firmware.h>
> >> > > #include <linux/interrupt.h>
> >> > > +#include <linux/pm_runtime.h>
> >> > > #include <linux/reset.h>
> >> > > #include "wave5-vpu.h"
> >> > > #include "wave5-regdefine.h"
> >> > > @@ -153,6 +154,45 @@ static int wave5_vpu_load_firmware(struct
> >> > > device
> >> *dev, const char *fw_name,
> >> > > return 0;
> >> > > }
> >> > >
> >> > > +static __maybe_unused int wave5_pm_suspend(struct device *dev) {
> >> > > + struct vpu_device *vpu = dev_get_drvdata(dev);
> >> > > +
> >> > > + if (pm_runtime_suspended(dev))
> >> > > + return 0;
> >> > > +
> >> > > + if (vpu->irq < 0)
> >> > > + hrtimer_cancel(&vpu->hrtimer);
> >> > > +
> >> > > + wave5_vpu_sleep_wake(dev, true, NULL, 0);
> >> > > + clk_bulk_disable_unprepare(vpu->num_clks, vpu->clks);
> >> > > +
> >> > > + return 0;
> >> > > +}
> >> > > +
> >> > > +static __maybe_unused int wave5_pm_resume(struct device *dev) {
> >> > > + struct vpu_device *vpu = dev_get_drvdata(dev);
> >> > > + int ret = 0;
> >> > > +
> >> > > + wave5_vpu_sleep_wake(dev, false, NULL, 0);
> >> > > + ret = clk_bulk_prepare_enable(vpu->num_clks, vpu->clks);
> >> > > + if (ret) {
> >> > > + dev_err(dev, "Enabling clocks, fail: %d\n", ret);
> >> > > + return ret;
> >> > > + }
> >> > > +
> >> > > + if (vpu->irq < 0 && !hrtimer_active(&vpu->hrtimer))
> >> > > + hrtimer_start(&vpu->hrtimer, ns_to_ktime(vpu-
> >> >vpu_poll_interval * NSEC_PER_MSEC),
> >> > > + HRTIMER_MODE_REL_PINNED);
> >>
> >> I have fixed locally this style error. Alignment should match open
> >> parenthesis.
> >> Checkpatch caught that, it saves times if you run checkpatch before
> >> your submissions.
> >>
> >> https://gitlab.freedesktop.org/ndufresne/media-staging/-/jobs/6328365
> >> 4
> >>
> >
> >
> >Sorry for that, thanks for your feedback.
> >Should I make v8 for that ?
>
> That is not required in this case, when he says "I have fixed locally",
> that means that the required change is applied by the maintainer before
> merging the changes upstream.
>
> Regards,
> Sebastian

Next message: Uros Bizjak: "[PATCH RESEND v2 00/19] random: Resolve circular include dependency and include <linux/percpu.h>"
Previous message: Emil Gedenryd: "Re: [PATCH 2/3] iio: light: opt3001: add support for TI's opt3002 light sensor"
In reply to: sebastian.fricke@xxxxxxxxxxxxx: "Re: [RESEND PATCH v7 2/4] media: chips-media: wave5: Support runtime suspend/resume"
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