From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CBA8F17CA12; Mon, 10 Mar 2025 17:50:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629000; cv=none; b=HzSWDRbl3+I9Ni3h1zzBAYe7D8Imy7+jEq7E6U210fEds5JagjznX5BMXQK4oO7eX8Fr4hhKXybgfz0tPZmlgf0HwrCdzcvFSdDLPiwWHoHG8eElr3htGis/2ODJquPjkIOEww++HZd5vl4UuqIiIpEeOUgfkmSrtIkbtXhQ9ho= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741629000; c=relaxed/simple; bh=bj+mwH/pfCaGVVnROSTNqSaBe5Omdm5bZ4uCSATMXbU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OyBUrl/Z0OQGAStaHd+rCw63TOkDcmIJd6eIqsiTTwg1barJ/Wm/N93v6upTva5VoyRZcblxynqAbov9nMYXHhU2hQ9oCTPktr+AxbcbGlxw97ACeIwhQYPA7EYlGCsOAn/JC/9NudQF21siu8Xnfs5mcjvcIrsUMZ60So0NT5U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LAUUWU+N; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LAUUWU+N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 529E8C4CEE5; Mon, 10 Mar 2025 17:50:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741629000; bh=bj+mwH/pfCaGVVnROSTNqSaBe5Omdm5bZ4uCSATMXbU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LAUUWU+N7L/iSEnn7ICgVvezYdhAlzdDvzvPymNsJ2knK//S48R41svGC5s74uYcZ SyhWRm5i/5CAqx3nCiCeYP5JMaIgUyNeZaVyGPSAsx6nMOsaWhnYRyy6h0GsvaVZk5 S/eId2Acrz0QxHr7JRsHPmMw+JsLkrc4lymBjgIE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dave Stevenson , Kieran Bingham , Sakari Ailus , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.15 141/620] media: i2c: ov9282: Correct the exposure offset Date: Mon, 10 Mar 2025 17:59:47 +0100 Message-ID: <20250310170551.164361943@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250310170545.553361750@linuxfoundation.org> References: <20250310170545.553361750@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dave Stevenson [ Upstream commit feaf4154d69657af2bf96e6e66cca794f88b1a61 ] The datasheet lists that "Maximum exposure time is frame length -25 row periods, where frame length is set by registers {0x380E, 0x380F}". However this driver had OV9282_EXPOSURE_OFFSET set to 12 which allowed that restriction to be violated, and would result in very under-exposed images. Correct the offset. Fixes: 14ea315bbeb7 ("media: i2c: Add ov9282 camera sensor driver") Signed-off-by: Dave Stevenson Reviewed-by: Kieran Bingham Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/i2c/ov9282.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c index 2e0b315801e56..5bc9fafa72a4b 100644 --- a/drivers/media/i2c/ov9282.c +++ b/drivers/media/i2c/ov9282.c @@ -31,7 +31,7 @@ /* Exposure control */ #define OV9282_REG_EXPOSURE 0x3500 #define OV9282_EXPOSURE_MIN 1 -#define OV9282_EXPOSURE_OFFSET 12 +#define OV9282_EXPOSURE_OFFSET 25 #define OV9282_EXPOSURE_STEP 1 #define OV9282_EXPOSURE_DEFAULT 0x0282 -- 2.39.5