From nobody Fri Dec 19 21:47:08 2025 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 2D6A4FA373E for ; Mon, 24 Oct 2022 12:24:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233633AbiJXMX7 (ORCPT ); Mon, 24 Oct 2022 08:23:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233233AbiJXMWn (ORCPT ); Mon, 24 Oct 2022 08:22:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DACA63E7; Mon, 24 Oct 2022 04:59:23 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3D8FA61280; Mon, 24 Oct 2022 11:58:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4F296C433D7; Mon, 24 Oct 2022 11:58:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1666612719; bh=KqhLPw44/U/3UiBEYNT1QjNxtDA8eRK5sbZocUnIHaw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rCHAcMRHctbUPZQgVpIlNhrRvQATvyIZ3ubqyD47m2vaNfLJ+cScZIMYFqVj9q3Jg I/45KplujBZIcJbS07n0TSd3PVrafZc2mPUzZVSsoC3pDirbZEOTCm3YCrUsi6GEVH VionEYxRL9zM4+4k9JHE+8c7O/2xfe4TDAhHxJZ4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Alvin=20=C5=A0ipraga?= , Robert Foss , Sasha Levin Subject: [PATCH 4.19 094/229] drm: bridge: adv7511: fix CEC power down control register offset Date: Mon, 24 Oct 2022 13:30:13 +0200 Message-Id: <20221024113002.087392095@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221024112959.085534368@linuxfoundation.org> References: <20221024112959.085534368@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alvin =C5=A0ipraga [ Upstream commit 1d22b6033ea113a4c3850dfa2c0770885c81aec8 ] The ADV7511_REG_CEC_CTRL =3D 0xE2 register is part of the main register map - not the CEC register map. As such, we shouldn't apply an offset to the register address. Doing so will cause us to address a bogus register for chips with a CEC register map offset (e.g. ADV7533). Fixes: 3b1b975003e4 ("drm: adv7511/33: add HDMI CEC support") Signed-off-by: Alvin =C5=A0ipraga Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20220612144854.2223873-= 2-alvin@pqrs.dk Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/adv7511/adv7511.h | 5 +---- drivers/gpu/drm/bridge/adv7511/adv7511_cec.c | 4 ++-- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bri= dge/adv7511/adv7511.h index 73d8ccb97742..d214865c2459 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -383,10 +383,7 @@ void adv7511_cec_irq_process(struct adv7511 *adv7511, = unsigned int irq1); #else static inline int adv7511_cec_init(struct device *dev, struct adv7511 *adv= 7511) { - unsigned int offset =3D adv7511->type =3D=3D ADV7533 ? - ADV7533_REG_CEC_OFFSET : 0; - - regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL + offset, + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, ADV7511_CEC_CTRL_POWER_DOWN); return 0; } diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c b/drivers/gpu/drm= /bridge/adv7511/adv7511_cec.c index a20a45c0b353..ddd1305b82b2 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c @@ -316,7 +316,7 @@ int adv7511_cec_init(struct device *dev, struct adv7511= *adv7511) goto err_cec_alloc; } =20 - regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL + offset, 0); + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, 0); /* cec soft reset */ regmap_write(adv7511->regmap_cec, ADV7511_REG_CEC_SOFT_RESET + offset, 0x01); @@ -343,7 +343,7 @@ int adv7511_cec_init(struct device *dev, struct adv7511= *adv7511) dev_info(dev, "Initializing CEC failed with error %d, disabling CEC\n", ret); err_cec_parse_dt: - regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL + offset, + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, ADV7511_CEC_CTRL_POWER_DOWN); return ret =3D=3D -EPROBE_DEFER ? ret : 0; } --=20 2.35.1