linux-kernel - [RFC PATCH V0 3/4] media: v4l2-ctrl: Add ISP Camsys user control

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Date:   Wed, 5 May 2021 16:06:25 +0800
From:   Louis Kuo <louis.kuo@...iatek.com>
To:     <sakari.ailus@...ux.intel.com>,
        <laurent.pinchart@...asonboard.com>, <mchehab@...nel.org>,
        <matthias.bgg@...il.com>, <hverkuil-cisco@...all.nl>,
        <arnd@...db.de>, <louis.kuo@...iatek.com>,
        <sergey.senozhatsky@...il.com>, <helen.koike@...labora.com>,
        <niklas.soderlund+renesas@...natech.se>, <yepeilin.cs@...il.com>
CC:     <frederic.chen@...iatek.com>, <linux-media@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: [RFC PATCH V0 3/4] media: v4l2-ctrl: Add ISP Camsys user control

This patch is to add V4L2_CID_USER_MTK_CAM_BASE for Mediatek ISP-only
features. For example, we have some hits from users to let drivers select
internal path and resource usage.
(e.g. use multiple engine or bining the image or use higher clk and power).

Signed-off-by: Louis Kuo <louis.kuo@...iatek.com>
---
 include/uapi/linux/v4l2-controls.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index d43bec5f1afd..5f664b98fc58 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -194,6 +194,10 @@ enum v4l2_colorfx {
  * We reserve 16 controls for this driver. */
 #define V4L2_CID_USER_IMX_BASE			(V4L2_CID_USER_BASE + 0x10b0)
 
+/* The base for the mediatek camsys driver controls */
+/* We reserve 48 controls for this driver. */
+#define V4L2_CID_USER_MTK_CAM_BASE		(V4L2_CID_USER_BASE + 0x10d0)
+
 /*
  * The base for the atmel isc driver controls.
  * We reserve 32 controls for this driver.
-- 
2.18.0