From: Stu Hsieh <stu.hsieh@mediatek.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh+dt@kernel.org>, CK Hu <ck.hu@mediatek.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Stu Hsieh <stu.hsieh@mediatek.com>, <linux-media@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<srv_heupstream@mediatek.com>
Subject: [PATCH v2 03/15] [media] mtk-mipicsi: add pm function
Date: Tue, 16 Apr 2019 17:30:03 +0800 [thread overview]
Message-ID: <1555407015-18130-4-git-send-email-stu.hsieh@mediatek.com> (raw)
In-Reply-To: <1555407015-18130-1-git-send-email-stu.hsieh@mediatek.com>
This patch add PM function to enable/disable clk and larb.
Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
---
.../media/platform/mtk-mipicsi/mtk_mipicsi.c | 80 +++++++++++++++++++
1 file changed, 80 insertions(+)
diff --git a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
index e26bebe17fe5..ec4f6b503b32 100644
--- a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
+++ b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
@@ -464,6 +464,85 @@ static struct soc_camera_host_ops mtk_soc_camera_host_ops = {
.set_bus_param = mtk_mipicsi_set_bus_param,
};
+static int mtk_mipicsi_pm_suspend(struct device *dev)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(dev);
+ struct mtk_mipicsi_dev *mipicsi = NULL;
+ int ret = 0;
+ int i = 0;
+
+ mipicsi = container_of(ici, struct mtk_mipicsi_dev, soc_host);
+ if (mipicsi->soc_host.icd != NULL) {
+ struct v4l2_subdev *sd =
+ soc_camera_to_subdev(mipicsi->soc_host.icd);
+
+ ret = v4l2_subdev_call(sd, core, s_power, 0);
+ if (ret == -ENOIOCTLCMD)
+ ret = 0;
+ }
+
+ /* close digtal and analog clock */
+ for (i = 0; i < mipicsi->clk_num; ++i)
+ clk_disable_unprepare(mipicsi->clk[i]);
+
+ if (mipicsi->larb_pdev != NULL)
+ mtk_smi_larb_put(mipicsi->larb_pdev);
+
+ return ret;
+}
+
+static int mtk_mipicsi_suspend(struct device *dev)
+{
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ return mtk_mipicsi_pm_suspend(dev);
+}
+
+static int mtk_mipicsi_pm_resume(struct device *dev)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(dev);
+ struct mtk_mipicsi_dev *mipicsi =
+ container_of(ici, struct mtk_mipicsi_dev, soc_host);
+ int ret = 0;
+ int i = 0;
+
+ if (mipicsi->soc_host.icd != NULL) {
+ struct v4l2_subdev *sd =
+ soc_camera_to_subdev(mipicsi->soc_host.icd);
+
+ ret = v4l2_subdev_call(sd, core, s_power, 1);
+ if (ret == -ENOIOCTLCMD)
+ ret = 0;
+ }
+
+ if (mipicsi->larb_pdev != NULL) {
+ ret = mtk_smi_larb_get(mipicsi->larb_pdev);
+ if (ret != 0)
+ return ret;
+ }
+
+ /* enable digtal clock */
+ for (i = 0; i < mipicsi->clk_num; ++i)
+ (void)clk_prepare_enable(mipicsi->clk[i]);
+
+ return ret;
+}
+
+static int mtk_mipicsi_resume(struct device *dev)
+{
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ return mtk_mipicsi_pm_resume(dev);
+}
+
+static const struct dev_pm_ops mtk_mipicsi_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(mtk_mipicsi_suspend, mtk_mipicsi_resume)
+ SET_RUNTIME_PM_OPS(mtk_mipicsi_pm_suspend,
+ mtk_mipicsi_pm_resume, NULL)
+};
+
static int seninf_mux_camsv_node_parse(struct mtk_mipicsi_dev *mipicsi,
int index)
{
@@ -756,6 +835,7 @@ static const struct of_device_id mtk_mipicsi_of_match[] = {
static struct platform_driver mtk_mipicsi_driver = {
.driver = {
.name = MTK_MIPICSI_DRV_NAME,
+ .pm = &mtk_mipicsi_pm,
.of_match_table = of_match_ptr(mtk_mipicsi_of_match),
},
.probe = mtk_mipicsi_probe,
--
2.18.0
next prev parent reply other threads:[~2019-04-16 9:31 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 9:30 [PATCH v2 00/15] Add mediatek mipicsi driver for Mediatek SOC MT2712 Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 01/15] dt-bindings: media: Add binding for MT2712 MIPI-CSI2 Stu Hsieh
2019-04-29 22:53 ` Rob Herring
2019-04-16 9:30 ` [PATCH v2 02/15] [media] mtk-mipicsi: add mediatek mipicsi driver for mt2712 Stu Hsieh
2019-04-18 1:34 ` CK Hu
2019-04-16 9:30 ` Stu Hsieh [this message]
2019-04-16 9:30 ` [PATCH v2 04/15] [media] mtk-mipicsi: add color format support " Stu Hsieh
2019-04-18 1:39 ` CK Hu
2019-04-16 9:30 ` [PATCH v2 05/15] [media] mtk-mipicsi: get the w/h/bytepwerline for mtk_mipicsi Stu Hsieh
2019-04-19 3:52 ` CK Hu
2019-04-16 9:30 ` [PATCH v2 06/15] [media] mtk-mipicsi: add function to support SerDes for link number Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 07/15] [media] mtk-mipicsi: add mipicsi reg setting for mt2712 Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 08/15] [media] mtk-mipicsi: enable/disable ana clk Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 09/15] [media] mtk-mipicsi: enable/disable cmos for mt2712 Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 10/15] [media] mtk-mipicsi: add ISR for writing the data to buffer Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 11/15] [media] mtk-mipicsi: set the output address in HW reg Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 12/15] [media] mtk-mipicsi: add function to get the format Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 13/15] [media] mtk-mipicsi: add the function for Get/Set PARM for application Stu Hsieh
2019-05-13 9:24 ` Hans Verkuil
2019-04-16 9:30 ` [PATCH v2 14/15] [media] mtk-mipicsi: add debug message for mipicsi driver Stu Hsieh
2019-04-16 9:30 ` [PATCH v2 15/15] [media] mtk-mipicsi: add debugfs " Stu Hsieh
-- strict thread matches above, loose matches on Subject: below --
2019-04-16 9:27 [PATCH v2 00/15] Add mediatek mipicsi driver for Mediatek SOC MT2712 Stu Hsieh
2019-04-16 9:27 ` [PATCH v2 03/15] [media] mtk-mipicsi: add pm function Stu Hsieh
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