From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 842C3538C for ; Tue, 19 Sep 2023 10:24:04 +0000 (UTC) Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 40002F2; Tue, 19 Sep 2023 03:24:02 -0700 (PDT) Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 08B4666071A9; Tue, 19 Sep 2023 11:23:59 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1695119040; bh=vEd/MlguL02ZXOoi5Lbo0eYYX6tjl/mBmpK3ZZEUtB8=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ND8iOwdDEuuZr6o5GFR1BcGk2ITNPnArgMvUGFAJohCweD6qZLyhpVjkG1nFoh04l /XF9yMOyv6CmWws+8IYm9fx/12p2Xq/2k/SV/5w5OFfnI4jFkNGEJcSdYZzAg/+KWN +CK+wHtpexMo1hYbB3fasJsYDmxaBSHTUVj5+6VD6YMb9tX1iCteOb2D5gat/q0Pns klLQPVyPR7lNfMzV0OWv8JqGcMaesyHa1qhhO9IRFycI6rtN96iSu7tgG5rDwlQdkR 7hdg9gZNBmNeYmn6TQ0mY7FpB1bO2nzFyzSCQcXbqbzlCnDadDg9klsyOHlp6eZ1D2 TjzD/OXqZFCzQ== Message-ID: Date: Tue, 19 Sep 2023 12:23:57 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.0 Subject: Re: [PATCH 2/2] media: platform: mtk-mdp3: Use devicetree phandle to retrieve SCP Content-Language: en-US To: wens@kernel.org Cc: mchehab@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, matthias.bgg@gmail.com, moudy.ho@mediatek.com, hverkuil-cisco@xs4all.nl, sakari.ailus@linux.intel.com, u.kleine-koenig@pengutronix.de, linqiheng@huawei.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel@collabora.com, wenst@chromium.org References: <20230919095938.70679-1-angelogioacchino.delregno@collabora.com> <20230919095938.70679-3-angelogioacchino.delregno@collabora.com> From: AngeloGioacchino Del Regno In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Il 19/09/23 12:21, Chen-Yu Tsai ha scritto: > On Tue, Sep 19, 2023 at 6:00 PM AngeloGioacchino Del Regno > wrote: >> >> Instead of walking the entire parent node for something that has the >> right compatible, use the scp_get() function provided by the MediaTek >> SCP remoteproc driver to retrieve a handle to mtk_scp through the >> devicetree "mediatek,scp" (phandle) property. >> >> In case of multi-core SCP, this also allows to select a specific core. >> >> Signed-off-by: AngeloGioacchino Del Regno >> --- >> .../media/platform/mediatek/mdp3/mtk-mdp3-core.c | 16 ++++++++++------ >> 1 file changed, 10 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c >> index 8677e7fd5083..d93d3833633e 100644 >> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c >> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c >> @@ -254,13 +254,17 @@ static int mdp_probe(struct platform_device *pdev) >> goto err_destroy_job_wq; >> } >> >> - mm_pdev = __get_pdev_by_id(pdev, NULL, MDP_INFRA_SCP); >> - if (WARN_ON(!mm_pdev)) { >> - dev_err(&pdev->dev, "Could not get scp device\n"); >> - ret = -ENODEV; >> - goto err_destroy_clock_wq; >> + mdp->scp = scp_get(pdev); >> + if (!mdp->scp) { >> + mm_pdev = __get_pdev_by_id(pdev, NULL, MDP_INFRA_SCP); >> + if (WARN_ON(!mm_pdev)) { >> + dev_err(&pdev->dev, "Could not get scp device\n"); >> + ret = -ENODEV; >> + goto err_destroy_clock_wq; >> + } >> + mdp->scp = platform_get_drvdata(mm_pdev); > > You need to keep the original code as a fallback for old device trees. > I haven't removed the original code, it *is* there as a fallback :-) mdp->scp = scp_get() <--- new if (!mdp->scp) { fallback } Regards, Angelo > ChenYu > >> } >> - mdp->scp = platform_get_drvdata(mm_pdev); >> + >> mdp->rproc_handle = scp_get_rproc(mdp->scp); >> dev_dbg(&pdev->dev, "MDP rproc_handle: %pK", mdp->rproc_handle); >> >> -- >> 2.42.0 >> > _______________________________________________ > Kernel mailing list -- kernel@mailman.collabora.com > To unsubscribe send an email to kernel-leave@mailman.collabora.com