From patchwork Sat Oct 22 09:20:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 617594 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49C8CC04A95 for ; Sat, 22 Oct 2022 10:47:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230062AbiJVKrv (ORCPT ); Sat, 22 Oct 2022 06:47:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230047AbiJVKrd (ORCPT ); Sat, 22 Oct 2022 06:47:33 -0400 Received: from mslow1.mail.gandi.net (mslow1.mail.gandi.net [IPv6:2001:4b98:dc4:8::240]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D1E901D8F28 for ; Sat, 22 Oct 2022 03:05:16 -0700 (PDT) Received: from relay10.mail.gandi.net (unknown [IPv6:2001:4b98:dc4:8::230]) by mslow1.mail.gandi.net (Postfix) with ESMTP id 4DB70CCC1F for ; Sat, 22 Oct 2022 09:21:54 +0000 (UTC) Received: (Authenticated sender: jacopo@jmondi.org) by mail.gandi.net (Postfix) with ESMTPSA id D37EC240009; Sat, 22 Oct 2022 09:20:32 +0000 (UTC) From: Jacopo Mondi To: =?utf-8?q?Krzysztof_Ha=C5=82asa?= , Mauro Carvalho Chehab , Sakari Ailus , Laurent Pinchart Cc: Jacopo Mondi , linux-media@vger.kernel.org Subject: [PATCH v2 02/10] media: ar0521: Add V4L2_CID_ANALOG_GAIN Date: Sat, 22 Oct 2022 11:20:07 +0200 Message-Id: <20221022092015.208592-3-jacopo@jmondi.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221022092015.208592-1-jacopo@jmondi.org> References: <20221022092015.208592-1-jacopo@jmondi.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add support for V4L2_CID_ANALOG_GAIN. The control programs the global gain register which applies to all color channels. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/ar0521.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/media/i2c/ar0521.c b/drivers/media/i2c/ar0521.c index 0daa61df2603..ba169f0218a9 100644 --- a/drivers/media/i2c/ar0521.c +++ b/drivers/media/i2c/ar0521.c @@ -35,6 +35,11 @@ #define AR0521_HEIGHT_BLANKING_MIN 38u /* must be even */ #define AR0521_TOTAL_WIDTH_MIN 2968u +#define AR0521_ANA_GAIN_MIN 0x00 +#define AR0521_ANA_GAIN_MAX 0x3f +#define AR0521_ANA_GAIN_STEP 0x01 +#define AR0521_ANA_GAIN_DEFAULT 0x00 + /* AR0521 registers */ #define AR0521_REG_VT_PIX_CLK_DIV 0x0300 #define AR0521_REG_FRAME_LENGTH_LINES 0x0340 @@ -50,6 +55,8 @@ #define AR0521_REG_RESET_RESTART BIT(1) #define AR0521_REG_RESET_INIT BIT(0) +#define AR0521_REG_ANA_GAIN_CODE_GLOBAL 0x3028 + #define AR0521_REG_GREEN1_GAIN 0x3056 #define AR0521_REG_BLUE_GAIN 0x3058 #define AR0521_REG_RED_GAIN 0x305A @@ -456,6 +463,10 @@ static int ar0521_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_VBLANK: ret = ar0521_set_geometry(sensor); break; + case V4L2_CID_ANALOGUE_GAIN: + ret = ar0521_write_reg(sensor, AR0521_REG_ANA_GAIN_CODE_GLOBAL, + ctrl->val); + break; case V4L2_CID_GAIN: case V4L2_CID_RED_BALANCE: case V4L2_CID_BLUE_BALANCE: @@ -499,6 +510,11 @@ static int ar0521_init_controls(struct ar0521_dev *sensor) /* We can use our own mutex for the ctrl lock */ hdl->lock = &sensor->lock; + /* Analog gain */ + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, + AR0521_ANA_GAIN_MIN, AR0521_ANA_GAIN_MAX, + AR0521_ANA_GAIN_STEP, AR0521_ANA_GAIN_DEFAULT); + /* Manual gain */ ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 511, 1, 0); ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,