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authorÁlvaro Fernández Rojas <noltari@gmail.com>2019-12-23 13:42:55 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2019-12-24 18:49:44 +0100
commit67dcc43f3a22dc3a7ac07a7065971b426feeb043 (patch)
tree0b647356dce45d2c79fd46cf201daa5089cc0934 /target/linux/brcm2708/patches-4.19/950-0324-media-bcm2835-unicam-Power-on-subdev-on-open-release.patch
parent47a93a810f78adce5a130d287f82b28e9b54313c (diff)
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brcm2708: organize kernel patches
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0324-media-bcm2835-unicam-Power-on-subdev-on-open-release.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0324-media-bcm2835-unicam-Power-on-subdev-on-open-release.patch121
1 files changed, 0 insertions, 121 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0324-media-bcm2835-unicam-Power-on-subdev-on-open-release.patch b/target/linux/brcm2708/patches-4.19/950-0324-media-bcm2835-unicam-Power-on-subdev-on-open-release.patch
deleted file mode 100644
index f7488593e2..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0324-media-bcm2835-unicam-Power-on-subdev-on-open-release.patch
+++ /dev/null
@@ -1,121 +0,0 @@
-From bf1805e0c8c4fc05e2a13b0a03b510ff4e523418 Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.org>
-Date: Tue, 29 Jan 2019 15:56:10 +0000
-Subject: [PATCH 324/806] media:bcm2835-unicam: Power on subdev on
- open/release, not streaming
-
-The driver was powering on the source subdevice as part of STREAMON,
-and powering it off in STREAMOFF. This isn't so great if there is a
-significant amount of setup required for your device.
-
-Copy the approach taken in the Atmel ISC driver where s_power(1) is called
-on first file handle open, and s_power(0) is called on the last release.
-
-See https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=232437
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
----
- .../media/platform/bcm2835/bcm2835-unicam.c | 68 +++++++++++++++----
- 1 file changed, 54 insertions(+), 14 deletions(-)
-
---- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
-+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
-@@ -1237,11 +1237,6 @@ static int unicam_start_streaming(struct
- unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
- goto err_pm_put;
- }
-- ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
-- if (ret < 0 && ret != -ENOIOCTLCMD) {
-- unicam_err(dev, "power on failed in subdev\n");
-- goto err_clock_unprepare;
-- }
- dev->streaming = 1;
-
- unicam_start_rx(dev, addr);
-@@ -1256,8 +1251,6 @@ static int unicam_start_streaming(struct
-
- err_disable_unicam:
- unicam_disable(dev);
-- v4l2_subdev_call(dev->sensor, core, s_power, 0);
--err_clock_unprepare:
- clk_disable_unprepare(dev->clock);
- err_pm_put:
- unicam_runtime_put(dev);
-@@ -1306,11 +1299,6 @@ static void unicam_stop_streaming(struct
- dev->next_frm = NULL;
- spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
-
-- if (v4l2_subdev_has_op(dev->sensor, core, s_power)) {
-- if (v4l2_subdev_call(dev->sensor, core, s_power, 0) < 0)
-- unicam_err(dev, "power off failed in subdev\n");
-- }
--
- clk_disable_unprepare(dev->clock);
- unicam_runtime_put(dev);
- }
-@@ -1543,11 +1531,63 @@ static const struct vb2_ops unicam_video
- .stop_streaming = unicam_stop_streaming,
- };
-
-+/*
-+ * unicam_open : This function is based on the v4l2_fh_open helper function.
-+ * It has been augmented to handle sensor subdevice power management,
-+ */
-+static int unicam_open(struct file *file)
-+{
-+ struct unicam_device *dev = video_drvdata(file);
-+ int ret;
-+
-+ mutex_lock(&dev->lock);
-+
-+ ret = v4l2_fh_open(file);
-+ if (ret) {
-+ unicam_err(dev, "v4l2_fh_open failed\n");
-+ goto unlock;
-+ }
-+
-+ if (!v4l2_fh_is_singular_file(file))
-+ goto unlock;
-+
-+ ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
-+ if (ret < 0 && ret != -ENOIOCTLCMD) {
-+ v4l2_fh_release(file);
-+ goto unlock;
-+ }
-+
-+unlock:
-+ mutex_unlock(&dev->lock);
-+ return ret;
-+}
-+
-+static int unicam_release(struct file *file)
-+{
-+ struct unicam_device *dev = video_drvdata(file);
-+ struct v4l2_subdev *sd = dev->sensor;
-+ bool fh_singular;
-+ int ret;
-+
-+ mutex_lock(&dev->lock);
-+
-+ fh_singular = v4l2_fh_is_singular_file(file);
-+
-+ ret = _vb2_fop_release(file, NULL);
-+
-+ if (fh_singular)
-+ v4l2_subdev_call(sd, core, s_power, 0);
-+
-+ mutex_unlock(&dev->lock);
-+
-+ return ret;
-+}
-+
- /* unicam capture driver file operations */
- static const struct v4l2_file_operations unicam_fops = {
- .owner = THIS_MODULE,
-- .open = v4l2_fh_open,
-- .release = vb2_fop_release,
-+ .open = unicam_open,
-+ .release = unicam_release,
- .read = vb2_fop_read,
- .poll = vb2_fop_poll,
- .unlocked_ioctl = video_ioctl2,