From nobody Mon Feb 9 23:41:48 2026 Received: from mail-qv1-f45.google.com (mail-qv1-f45.google.com [209.85.219.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1AF471A9B3A for ; Thu, 14 Nov 2024 19:10:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731611453; cv=none; b=nNz8bUgNDPXoWnFVUhWu92UYuG5TuowJWk0gNdnNijnFDfJda0o2V8ScJMXa9Cfii2AHQIS9AI8kaki5DX1hztTxh5dPGyF/m9bdkW4DebDKsvXA+NXtqLZHY1eBmtyjeJyeXUy76TQSeHDxAieyvjj7DKTIR28y07cmJeEgHdE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731611453; c=relaxed/simple; bh=gIGmVdezcCcJeNLxtrKhKX+oRcR324CxjSWZAh2pVoE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Q8/757bHnJGVP0yCg5Gr2dy+azLQhcshb6qyNpy8JcOV4yFLJsdHBgW6Z7v5J0I6btl9IqD+EYrZagMoo/2IAXOF9dN0KFdW8pS4ueIgZvisMjB7Kc4bX7jBB2WVAtF8w20TqUnqeP6pgpKkzbFbPH1FaIp0JO05NohFADhjCVg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=aC7ulpuQ; arc=none smtp.client-ip=209.85.219.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="aC7ulpuQ" Received: by mail-qv1-f45.google.com with SMTP id 6a1803df08f44-6d382664fadso5469806d6.2 for ; Thu, 14 Nov 2024 11:10:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1731611450; x=1732216250; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=MoXFoTS1UHIpxTLyzT+33q7ydl+EE4ZnWBq8pnFccEU=; b=aC7ulpuQG0XZS4qz5WFOxUwUfF4c59+hF9Cjip0ZBecegc/Rk+yQxckchI6enBAgLV Kdq8gVBLvlBMQKdtqLKVsYZKCDiC+1Aks7oC5MEnpPrSS9putOClQ2VCOtmHjYXyjIeH 0QejeX4Bt1Y/9MNPCCg5vth/BU0WfCM1t8pH4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731611450; x=1732216250; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=MoXFoTS1UHIpxTLyzT+33q7ydl+EE4ZnWBq8pnFccEU=; b=JM7386FMBUPU39kJxi9wmZIB9ru8RnEKWLTjhIoTaKSme6TvcT/i5ogWJVozYuAQuE 3V+t8lPFav+8CEE6aCNvrAm3x/Vmd+T8dhN0mmiEgT4xrddqwztQcPhI4ZJJRzoTMkmj YkRuveajakkq+TmVlGczvT2qNm4A+VcmBPUSfbq7R5yUFObh2mkaZGlHgYWigfLpWSPy +F2llsh1bpWGeA6G8veVikjfnfJYbfP7ckNWTRpaTxgfVx/vT/AoNLcfWcKiQQCiNOVW S5EexEzYkLyvGSW69dNc62CuU+VpHSs0T29bMJcV1AgwECZdvRf6en44fs0LLeo2R9Qe v+1A== X-Forwarded-Encrypted: i=1; AJvYcCWvjusJrfa27T2yIVC4YSNxGt7XVTkjfbJEFtsrgZh+DrdTUqwQkTyBkSQI9uCF3WyzQO6EHkHBBpB+GiQ=@vger.kernel.org X-Gm-Message-State: AOJu0YzDiJrmTfIz0f7APurfZMZNq1o6eDDjHi0Hj3DmK5I5XXd2tjvk WX3MGXt6kshA5SB5lcxGOW7P2q+Jbi4oG+kz4AOLGmVj9WfozP9h/zbrM6fzow== X-Google-Smtp-Source: AGHT+IH3AHUKa3QYBAA2tT0n3IAU/U0FsAiEeXPgr/F9Ta/r6uwiQZR+OH0yIoOUcs7eU1U6UG1g4A== X-Received: by 2002:a05:6214:458c:b0:6cb:edd7:ac32 with SMTP id 6a1803df08f44-6d3d00be928mr154115866d6.12.1731611449903; Thu, 14 Nov 2024 11:10:49 -0800 (PST) Received: from denia.c.googlers.com (189.216.85.34.bc.googleusercontent.com. [34.85.216.189]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6d3ee7cc7e1sm8857766d6.53.2024.11.14.11.10.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Nov 2024 11:10:49 -0800 (PST) From: Ricardo Ribalda Date: Thu, 14 Nov 2024 19:10:34 +0000 Subject: [PATCH v15 05/19] media: uvcvideo: Handle uvc menu translation inside uvc_get_le_value 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: <20241114-uvc-roi-v15-5-64cfeb56b6f8@chromium.org> References: <20241114-uvc-roi-v15-0-64cfeb56b6f8@chromium.org> In-Reply-To: <20241114-uvc-roi-v15-0-64cfeb56b6f8@chromium.org> To: Laurent Pinchart , Mauro Carvalho Chehab , Hans de Goede , Ricardo Ribalda , Sakari Ailus , Hans Verkuil Cc: Yunke Cao , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.13.0 map->get() gets a value from an uvc_control in "UVC format" and converts it to a value that can be consumed by v4l2. Instead of using a special get function for V4L2_CTRL_TYPE_MENU, we were converting from uvc_get_le_value in two different places. Move the conversion to uvc_get_le_value(). Signed-off-by: Ricardo Ribalda Reviewed-by: Hans de Goede --- drivers/media/usb/uvc/uvc_ctrl.c | 77 +++++++++++++++++-------------------= ---- 1 file changed, 32 insertions(+), 45 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_c= trl.c index bab9fdac98e6..77f7058ec966 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -862,6 +862,25 @@ static inline void uvc_clear_bit(u8 *data, int bit) data[bit >> 3] &=3D ~(1 << (bit & 7)); } =20 +static s32 uvc_menu_to_v4l2_menu(struct uvc_control_mapping *mapping, s32 = val) +{ + unsigned int i; + + for (i =3D 0; BIT(i) <=3D mapping->menu_mask; ++i) { + u32 menu_value; + + if (!test_bit(i, &mapping->menu_mask)) + continue; + + menu_value =3D uvc_mapping_get_menu_value(mapping, i); + + if (menu_value =3D=3D val) + return i; + } + + return val; +} + /* * Extract the bit string specified by mapping->offset and mapping->size * from the little-endian data stored at 'data' and return the result as @@ -896,6 +915,16 @@ static s32 uvc_get_le_value(struct uvc_control_mapping= *mapping, if (mapping->data_type =3D=3D UVC_CTRL_DATA_TYPE_SIGNED) value |=3D -(value & (1 << (mapping->size - 1))); =20 + /* If it is a menu, convert from uvc to v4l2. */ + if (mapping->v4l2_type !=3D V4L2_CTRL_TYPE_MENU) + return value; + + switch (query) { + case UVC_GET_CUR: + case UVC_GET_DEF: + return uvc_menu_to_v4l2_menu(mapping, value); + } + return value; } =20 @@ -1060,32 +1089,6 @@ static int uvc_ctrl_populate_cache(struct uvc_video_= chain *chain, return 0; } =20 -static s32 __uvc_ctrl_get_value(struct uvc_control_mapping *mapping, - const u8 *data) -{ - s32 value =3D mapping->get(mapping, UVC_GET_CUR, data); - - if (mapping->v4l2_type =3D=3D V4L2_CTRL_TYPE_MENU) { - unsigned int i; - - for (i =3D 0; BIT(i) <=3D mapping->menu_mask; ++i) { - u32 menu_value; - - if (!test_bit(i, &mapping->menu_mask)) - continue; - - menu_value =3D uvc_mapping_get_menu_value(mapping, i); - - if (menu_value =3D=3D value) { - value =3D i; - break; - } - } - } - - return value; -} - static int __uvc_ctrl_load_cur(struct uvc_video_chain *chain, struct uvc_control *ctrl) { @@ -1136,8 +1139,8 @@ static int __uvc_ctrl_get(struct uvc_video_chain *cha= in, if (ret < 0) return ret; =20 - *value =3D __uvc_ctrl_get_value(mapping, - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT)); + *value =3D mapping->get(mapping, UVC_GET_CUR, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT)); =20 return 0; } @@ -1287,7 +1290,6 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_cha= in *chain, { struct uvc_control_mapping *master_map =3D NULL; struct uvc_control *master_ctrl =3D NULL; - unsigned int i; =20 memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl)); v4l2_ctrl->id =3D mapping->id; @@ -1330,21 +1332,6 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_ch= ain *chain, v4l2_ctrl->minimum =3D ffs(mapping->menu_mask) - 1; v4l2_ctrl->maximum =3D fls(mapping->menu_mask) - 1; v4l2_ctrl->step =3D 1; - - for (i =3D 0; BIT(i) <=3D mapping->menu_mask; ++i) { - u32 menu_value; - - if (!test_bit(i, &mapping->menu_mask)) - continue; - - menu_value =3D uvc_mapping_get_menu_value(mapping, i); - - if (menu_value =3D=3D v4l2_ctrl->default_value) { - v4l2_ctrl->default_value =3D i; - break; - } - } - return 0; =20 case V4L2_CTRL_TYPE_BOOLEAN: @@ -1592,7 +1579,7 @@ void uvc_ctrl_status_event(struct uvc_video_chain *ch= ain, ctrl->handle =3D NULL; =20 list_for_each_entry(mapping, &ctrl->info.mappings, list) { - s32 value =3D __uvc_ctrl_get_value(mapping, data); + s32 value =3D mapping->get(mapping, UVC_GET_CUR, data); =20 /* * handle may be NULL here if the device sends auto-update --=20 2.47.0.338.g60cca15819-goog