From: Ricardo Ribalda <ribalda@chromium.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Ricardo Ribalda <ribalda@chromium.org>
Subject: [PATCH v7 02/12] media: uvcvideo: Allow extra entities
Date: Wed, 23 Dec 2020 14:35:18 +0100 [thread overview]
Message-ID: <20201223133528.55014-3-ribalda@chromium.org> (raw)
In-Reply-To: <20201223133528.55014-1-ribalda@chromium.org>
Increase the size of the id, to avoid collisions with entities
implemented by the driver that are not part of the UVC device.
Entities exposed by the UVC device use IDs 0-255, extra entities
implemented by the driver (such as the GPIO entity) use IDs 256 and
up.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
drivers/media/usb/uvc/uvc_driver.c | 2 +-
drivers/media/usb/uvc/uvcvideo.h | 7 ++++++-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index bfbc5a4d4ca6..82cdd1bb28dc 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1024,7 +1024,7 @@ static const u8 uvc_media_transport_input_guid[16] =
UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
-static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
+static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id,
unsigned int num_pads, unsigned int extra_size)
{
struct uvc_entity *entity;
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index df7bf2d104a3..c50b0546901f 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -301,7 +301,12 @@ struct uvc_entity {
* chain. */
unsigned int flags;
- u8 id;
+ /*
+ * Entities exposed by the UVC device use IDs 0-255, extra entities
+ * implemented by the driver (such as the GPIO entity) use IDs 256 and
+ * up.
+ */
+ u16 id;
u16 type;
char name[64];
u8 guid[16];
--
2.29.2.729.g45daf8777d-goog
next prev parent reply other threads:[~2020-12-23 13:37 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-23 13:35 [PATCH v7 00/12] Show privacy_gpio as a v4l2_ctrl Ricardo Ribalda
2020-12-23 13:35 ` [PATCH v7 01/12] media: uvcvideo: Move guid to entity Ricardo Ribalda
2020-12-23 13:35 ` Ricardo Ribalda [this message]
2020-12-23 13:35 ` [PATCH v7 03/12] media: uvcvideo: Allow entities with no pads Ricardo Ribalda
2020-12-23 13:35 ` [PATCH v7 04/12] media: uvcvideo: Provide sync and async uvc_ctrl_status_event Ricardo Ribalda
2021-01-26 15:38 ` Laurent Pinchart
2020-12-23 13:35 ` [PATCH v7 05/12] media: uvcvideo: Allow entity-defined get_info and get_cur Ricardo Ribalda
2020-12-23 13:35 ` [PATCH v7 06/12] media: uvcvideo: Implement UVC_EXT_GPIO_UNIT Ricardo Ribalda
2021-01-26 15:53 ` Laurent Pinchart
2021-01-26 15:56 ` Laurent Pinchart
2020-12-23 13:35 ` [PATCH v7 07/12] media: uvcvideo: Add Privacy control based on EXT_GPIO Ricardo Ribalda
2020-12-23 13:35 ` [PATCH v7 08/12] media: uvcvideo: Use dev_ printk aliases Ricardo Ribalda
2020-12-24 12:59 ` Andy Shevchenko
2020-12-24 13:50 ` Laurent Pinchart
2020-12-23 13:35 ` [PATCH v7 09/12] media: uvcvideo: New macro uvc_trace_cont Ricardo Ribalda
2020-12-23 13:35 ` [PATCH v7 10/12] media: uvcvideo: use dev_printk() for uvc_trace() Ricardo Ribalda
2020-12-23 13:35 ` [PATCH v7 11/12] media: uvcvideo: Rename debug functions Ricardo Ribalda
2021-01-26 17:05 ` Laurent Pinchart
2020-12-23 13:35 ` [PATCH v7 12/12] media: uvcvideo: Implement UVC_QUIRK_PRIVACY_DURING_STREAM Ricardo Ribalda
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