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Mon, 12 Aug 2024 06:29:29 +0000 From: "Jackson.lee" To: mchehab@kernel.org, nicolas@ndufresne.ca, sebastian.fricke@collabora.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, hverkuil@xs4all.nl, nas.chung@chipsnmedia.com, lafley.kim@chipsnmedia.com, b-brnich@ti.com, jackson.lee@chipsnmedia.com, Nicolas Dufresne Subject: [PATCH v7 2/4] media: chips-media: wave5: Support runtime suspend/resume Date: Mon, 12 Aug 2024 15:29:17 +0900 Message-Id: <20240812062919.78-3-jackson.lee@chipsnmedia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240812062919.78-1-jackson.lee@chipsnmedia.com> References: <20240812062919.78-1-jackson.lee@chipsnmedia.com> X-ClientProxiedBy: SE2P216CA0044.KORP216.PROD.OUTLOOK.COM (2603:1096:101:116::11) To SE1P216MB1303.KORP216.PROD.OUTLOOK.COM (2603:1096:101:15::5) Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SE1P216MB1303:EE_|SE2P216MB1812:EE_ X-MS-Office365-Filtering-Correlation-Id: 60563810-c75f-4c5c-67af-08dcba981f03 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|52116014|376014|38350700014; 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This is achieved by saving the VPU state and powering it off while the VPU idle. Signed-off-by: Jackson.lee Signed-off-by: Nas Chung Reviewed-by: Nicolas Dufresne --- .../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 #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 #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 #include #include +#include #include #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); + + return ret; +} + +static const struct dev_pm_ops wave5_pm_ops = { + SET_RUNTIME_PM_OPS(wave5_pm_suspend, wave5_pm_resume, NULL) +}; + static int wave5_vpu_probe(struct platform_device *pdev) { int ret; @@ -281,6 +321,12 @@ static int wave5_vpu_probe(struct platform_device *pdev) (match_data->flags & WAVE5_IS_DEC) ? "'DECODE'" : ""); dev_info(&pdev->dev, "Product Code: 0x%x\n", dev->product_code); dev_info(&pdev->dev, "Firmware Revision: %u\n", fw_revision); + + pm_runtime_set_autosuspend_delay(&pdev->dev, 100); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + wave5_vpu_sleep_wake(&pdev->dev, true, NULL, 0); + return 0; err_enc_unreg: @@ -310,6 +356,9 @@ static void wave5_vpu_remove(struct platform_device *pdev) hrtimer_cancel(&dev->hrtimer); } + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + mutex_destroy(&dev->dev_lock); mutex_destroy(&dev->hw_lock); reset_control_assert(dev->resets); @@ -337,6 +386,7 @@ static struct platform_driver wave5_vpu_driver = { .driver = { .name = VPU_PLATFORM_DEVICE_NAME, .of_match_table = of_match_ptr(wave5_dt_ids), + .pm = &wave5_pm_ops, }, .probe = wave5_vpu_probe, .remove_new = wave5_vpu_remove, diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c index 1a3efb638dde..e16b990041c2 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c @@ -6,6 +6,8 @@ */ #include +#include +#include #include "wave5-vpuapi.h" #include "wave5-regdefine.h" #include "wave5.h" @@ -195,14 +197,20 @@ int wave5_vpu_dec_close(struct vpu_instance *inst, u32 *fail_res) int retry = 0; struct vpu_device *vpu_dev = inst->dev; int i; + int inst_count = 0; + struct vpu_instance *inst_elm; *fail_res = 0; if (!inst->codec_info) return -EINVAL; + pm_runtime_resume_and_get(inst->dev->dev); + ret = mutex_lock_interruptible(&vpu_dev->hw_lock); - if (ret) + if (ret) { + pm_runtime_put_sync(inst->dev->dev); return ret; + } do { ret = wave5_vpu_dec_finish_seq(inst, fail_res); @@ -232,9 +240,14 @@ int wave5_vpu_dec_close(struct vpu_instance *inst, u32 *fail_res) wave5_vdi_free_dma_memory(vpu_dev, &p_dec_info->vb_task); + list_for_each_entry(inst_elm, &vpu_dev->instances, list) + inst_count++; + if (inst_count == 1) + pm_runtime_dont_use_autosuspend(vpu_dev->dev); + unlock_and_return: mutex_unlock(&vpu_dev->hw_lock); - + pm_runtime_put_sync(inst->dev->dev); return ret; } @@ -697,25 +710,33 @@ int wave5_vpu_enc_close(struct vpu_instance *inst, u32 *fail_res) int ret; int retry = 0; struct vpu_device *vpu_dev = inst->dev; + int inst_count = 0; + struct vpu_instance *inst_elm; *fail_res = 0; if (!inst->codec_info) return -EINVAL; + pm_runtime_resume_and_get(inst->dev->dev); + ret = mutex_lock_interruptible(&vpu_dev->hw_lock); - if (ret) + if (ret) { + pm_runtime_resume_and_get(inst->dev->dev); return ret; + } do { ret = wave5_vpu_enc_finish_seq(inst, fail_res); if (ret < 0 && *fail_res != WAVE5_SYSERR_VPU_STILL_RUNNING) { dev_warn(inst->dev->dev, "enc_finish_seq timed out\n"); + pm_runtime_resume_and_get(inst->dev->dev); mutex_unlock(&vpu_dev->hw_lock); return ret; } if (*fail_res == WAVE5_SYSERR_VPU_STILL_RUNNING && retry++ >= MAX_FIRMWARE_CALL_RETRY) { + pm_runtime_resume_and_get(inst->dev->dev); mutex_unlock(&vpu_dev->hw_lock); return -ETIMEDOUT; } @@ -734,7 +755,13 @@ int wave5_vpu_enc_close(struct vpu_instance *inst, u32 *fail_res) wave5_vdi_free_dma_memory(vpu_dev, &p_enc_info->vb_task); + list_for_each_entry(inst_elm, &vpu_dev->instances, list) + inst_count++; + if (inst_count == 1) + pm_runtime_dont_use_autosuspend(vpu_dev->dev); + mutex_unlock(&vpu_dev->hw_lock); + pm_runtime_put_sync(inst->dev->dev); return 0; } diff --git a/drivers/media/platform/chips-media/wave5/wave5.h b/drivers/media/platform/chips-media/wave5/wave5.h index 2a29b9164f97..2caab356f3e1 100644 --- a/drivers/media/platform/chips-media/wave5/wave5.h +++ b/drivers/media/platform/chips-media/wave5/wave5.h @@ -62,6 +62,9 @@ int wave5_vpu_get_version(struct vpu_device *vpu_dev, u32 *revision); int wave5_vpu_init(struct device *dev, u8 *fw, size_t size); +int wave5_vpu_sleep_wake(struct device *dev, bool i_sleep_wake, const uint16_t *code, + size_t size); + int wave5_vpu_reset(struct device *dev, enum sw_reset_mode reset_mode); int wave5_vpu_build_up_dec_param(struct vpu_instance *inst, struct dec_open_param *param);