From nobody Wed Nov 27 20:36:17 2024 Received: from mx08-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC22F1DE3C1; Tue, 8 Oct 2024 11:50:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728388202; cv=none; b=UFCL9UyZt5+S97kbywpZuzQte4kSUWstVzkJ6gWIDlQ0feUMyemCj3DFTPYlobq5bbhGam9aOgx2q7A6ZpPDgRc4irkZoNKrbv7KdTjOKbAuj2qg7lhmcMAZ265rQpdMUMnX8pcABP2xEa2KkVZLuPgfiR6gn9XfjH3fR+XGjc0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728388202; c=relaxed/simple; bh=1CqIry95tyv+kn3op8ngGR3vg8HBawuT8sY+KxfDEoM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=Vd8DigIpWkbQ0hF4bn853U9IuLc90hqjAU6FFAJO3dxzPgTtds1O6aydseVbLhxr0N+IeobMZBmcnU9ejVbgl3icS3+nigeXoVYcIxpWBvAMeL/q1Cj5ZcP7AqtNGT6/yxE0/5y/Vc1kAVRhoC/nXDOlQnduQl/VvU1qHKprZTc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=Z10/lSqO; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="Z10/lSqO" Received: from pps.filterd (m0369457.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4987vp5D014980; Tue, 8 Oct 2024 13:49:55 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= WTSg2agHV3N14FzR8O+U/92oSmSIzVerhwhnLxMBkrw=; b=Z10/lSqOA1St0BM9 FNxd/jLP/ZfXjKlelKBBC4td8Iw2lLNyR1S/3oTEfIp9hOHSygZkOshU2OnpppYU +yfSVLv6gX6vVVvMe/u6PCaEUxlee6HEW0uTS9D9NBdu6nnMlj2b2Ejj3UaCGoDZ VFjlY2UGT0hKTMQb+lM+wnXQY3Ct/GZNvLTiOwVPAi/pO5tzy66U3vfXO1+KiII3 Hm+Qi8qYJjbaIlk1Ady6LrRppJe9W6sF9Fdf04XVY69uj7Up6W0hNDK8DU3AiSFY cRxouLzon3Xk6QoAGLcGNkd8QWaeN/VBFwPnVNagCDuM87Palbwpw9sLPtRdrN5j kbZ7xg== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 423gdmk1jr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 08 Oct 2024 13:49:55 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 9CBB54004D; Tue, 8 Oct 2024 13:49:19 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 57C6626450B; Tue, 8 Oct 2024 13:46:37 +0200 (CEST) Received: from localhost (10.129.178.213) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.37; Tue, 8 Oct 2024 13:46:37 +0200 From: Alain Volmat Date: Tue, 8 Oct 2024 13:46:07 +0200 Subject: [PATCH 3/4] media: i2c: st-mipid02: add pm_runtime handling Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20241008-st-mipid02-streams-v1-3-775c2d25cef9@foss.st.com> References: <20241008-st-mipid02-streams-v1-0-775c2d25cef9@foss.st.com> In-Reply-To: <20241008-st-mipid02-streams-v1-0-775c2d25cef9@foss.st.com> To: Benjamin Mugnier , Sylvain Petinot , Mauro Carvalho Chehab CC: , , Alain Volmat X-Mailer: b4 0.14.0 X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 Add handling of pm_runtime in order to control the supplies and clocks of the bridge. Signed-off-by: Alain Volmat --- drivers/media/i2c/st-mipid02.c | 49 ++++++++++++++++++++++++++++++++++++--= ---- 1 file changed, 43 insertions(+), 6 deletions(-) diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c index 1821a8fdd618..635b8a433d63 100644 --- a/drivers/media/i2c/st-mipid02.c +++ b/drivers/media/i2c/st-mipid02.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -249,8 +250,10 @@ static void mipid02_apply_reset(struct mipid02_dev *br= idge) usleep_range(5000, 10000); } =20 -static int mipid02_set_power_on(struct mipid02_dev *bridge) +static int mipid02_set_power_on(struct device *dev) { + struct v4l2_subdev *sd =3D dev_get_drvdata(dev); + struct mipid02_dev *bridge =3D to_mipid02_dev(sd); struct i2c_client *client =3D bridge->i2c_client; int ret; =20 @@ -283,10 +286,15 @@ static int mipid02_set_power_on(struct mipid02_dev *b= ridge) return ret; } =20 -static void mipid02_set_power_off(struct mipid02_dev *bridge) +static int mipid02_set_power_off(struct device *dev) { + struct v4l2_subdev *sd =3D dev_get_drvdata(dev); + struct mipid02_dev *bridge =3D to_mipid02_dev(sd); + regulator_bulk_disable(MIPID02_NUM_SUPPLIES, bridge->supplies); clk_disable_unprepare(bridge->xclk); + + return 0; } =20 static int mipid02_detect(struct mipid02_dev *bridge) @@ -470,6 +478,10 @@ static int mipid02_disable_streams(struct v4l2_subdev = *sd, cci_write(bridge->regmap, MIPID02_DATA_LANE1_REG1, 0, &ret); if (ret) goto error; + + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + error: if (ret) dev_err(&client->dev, "failed to stream off %d", ret); @@ -504,6 +516,10 @@ static int mipid02_enable_streams(struct v4l2_subdev *= sd, if (ret) return ret; =20 + ret =3D pm_runtime_resume_and_get(&client->dev); + if (ret < 0) + return ret; + /* write mipi registers */ cci_write(bridge->regmap, MIPID02_CLK_LANE_REG1, bridge->r.clk_lane_reg1, &ret); @@ -539,8 +555,9 @@ static int mipid02_enable_streams(struct v4l2_subdev *s= d, cci_write(bridge->regmap, MIPID02_CLK_LANE_REG1, 0, &ret); cci_write(bridge->regmap, MIPID02_DATA_LANE0_REG1, 0, &ret); cci_write(bridge->regmap, MIPID02_DATA_LANE1_REG1, 0, &ret); - dev_err(&client->dev, "failed to stream on %d", ret); =20 + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); return ret; } =20 @@ -868,7 +885,7 @@ static int mipid02_probe(struct i2c_client *client) } =20 /* enable clock, power and reset device if available */ - ret =3D mipid02_set_power_on(bridge); + ret =3D mipid02_set_power_on(&client->dev); if (ret) goto entity_cleanup; =20 @@ -890,6 +907,15 @@ static int mipid02_probe(struct i2c_client *client) goto power_off; } =20 + /* Enable runtime PM and turn off the device */ + pm_runtime_set_active(dev); + pm_runtime_get_noresume(&client->dev); + pm_runtime_enable(dev); + + pm_runtime_set_autosuspend_delay(&client->dev, 1000); + pm_runtime_use_autosuspend(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + ret =3D v4l2_async_register_subdev(&bridge->sd); if (ret < 0) { dev_err(&client->dev, "v4l2_async_register_subdev failed %d", @@ -904,8 +930,10 @@ static int mipid02_probe(struct i2c_client *client) unregister_notifier: v4l2_async_nf_unregister(&bridge->notifier); v4l2_async_nf_cleanup(&bridge->notifier); + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); power_off: - mipid02_set_power_off(bridge); + mipid02_set_power_off(&client->dev); entity_cleanup: media_entity_cleanup(&bridge->sd.entity); =20 @@ -920,7 +948,11 @@ static void mipid02_remove(struct i2c_client *client) v4l2_async_nf_unregister(&bridge->notifier); v4l2_async_nf_cleanup(&bridge->notifier); v4l2_async_unregister_subdev(&bridge->sd); - mipid02_set_power_off(bridge); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + mipid02_set_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); media_entity_cleanup(&bridge->sd.entity); } =20 @@ -930,10 +962,15 @@ static const struct of_device_id mipid02_dt_ids[] =3D= { }; MODULE_DEVICE_TABLE(of, mipid02_dt_ids); =20 +static const struct dev_pm_ops mipid02_pm_ops =3D { + RUNTIME_PM_OPS(mipid02_set_power_off, mipid02_set_power_on, NULL) +}; + static struct i2c_driver mipid02_i2c_driver =3D { .driver =3D { .name =3D "st-mipid02", .of_match_table =3D mipid02_dt_ids, + .pm =3D pm_ptr(&mipid02_pm_ops), }, .probe =3D mipid02_probe, .remove =3D mipid02_remove, --=20 2.25.1