From patchwork Tue Mar 15 06:10:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moudy Ho X-Patchwork-Id: 551529 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 2BA80C433FE for ; Tue, 15 Mar 2022 06:11:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345193AbiCOGMy (ORCPT ); Tue, 15 Mar 2022 02:12:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345150AbiCOGMq (ORCPT ); Tue, 15 Mar 2022 02:12:46 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83D9549F9D; Mon, 14 Mar 2022 23:11:34 -0700 (PDT) X-UUID: 230ce68ff8de41ce8536dc9c7ad97e54-20220315 X-UUID: 230ce68ff8de41ce8536dc9c7ad97e54-20220315 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 2061439537; Tue, 15 Mar 2022 14:11:28 +0800 Received: from mtkexhb01.mediatek.inc (172.21.101.102) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 15 Mar 2022 14:11:27 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkexhb01.mediatek.inc (172.21.101.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 15 Mar 2022 14:11:27 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 15 Mar 2022 14:11:26 +0800 From: Moudy Ho To: Mauro Carvalho Chehab , Rob Herring , Matthias Brugger , Hans Verkuil , Jernej Skrabec CC: Chun-Kuang Hu , Geert Uytterhoeven , Rob Landley , Laurent Pinchart , , , , , , Alexandre Courbot , , , , , AngeloGioacchino Del Regno , Maoguang Meng , daoyuan huang , Ping-Hsun Wu , , , , , , , , , , Subject: [PATCH v13 6/6] soc: mediatek: mutex: add functions that operate registers by CMDQ Date: Tue, 15 Mar 2022 14:10:31 +0800 Message-ID: <20220315061031.21642-7-moudy.ho@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220315061031.21642-1-moudy.ho@mediatek.com> References: <20220315061031.21642-1-moudy.ho@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Due to hardware limitations, MDP3 is necessary to enable MUTEX in each frame for SOF triggering and cooperate with CMDQ control to reduce the amount of interrupts generated(also, reduce frame latency). In response to the above situation, a new interface "mtk_mutex_enable_by_cmdq" has been added to achieve the purpose. Signed-off-by: Moudy Ho Reviewed-by: AngeloGioacchino Del Regno --- drivers/soc/mediatek/mtk-mutex.c | 42 +++++++++++++++++++++++++- include/linux/soc/mediatek/mtk-mutex.h | 2 ++ 2 files changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c index 88fb4fc8f216..0d85111cfbe2 100644 --- a/drivers/soc/mediatek/mtk-mutex.c +++ b/drivers/soc/mediatek/mtk-mutex.c @@ -7,10 +7,16 @@ #include #include #include +#include #include #include #include #include +#include + +#define MTK_MUTEX_ENABLE BIT(0) +#define MTK_MUTEX_MOD_MASK 0x07FFFFFF +#define MTK_MUTEX_SOF_MASK 0x00000007 #define MT2701_MUTEX0_MOD0 0x2c #define MT2701_MUTEX0_SOF0 0x30 @@ -167,6 +173,7 @@ struct mtk_mutex_data { const unsigned int mutex_sof_reg; const unsigned long long *mutex_table_mod; const bool no_clk; + const bool has_gce_client_reg; }; struct mtk_mutex_ctx { @@ -175,6 +182,8 @@ struct mtk_mutex_ctx { void __iomem *regs; struct mtk_mutex mutex[10]; const struct mtk_mutex_data *data; + phys_addr_t addr; + struct cmdq_client_reg cmdq_reg; }; static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = { @@ -357,6 +366,7 @@ static const struct mtk_mutex_data mt8183_mutex_driver_data = { .mutex_sof_reg = MT8183_MUTEX0_SOF0, .mutex_table_mod = mt8183_mutex_table_mod, .no_clk = true, + .has_gce_client_reg = true, }; static const struct mtk_mutex_data mt8186_mutex_driver_data = { @@ -639,6 +649,22 @@ void mtk_mutex_enable(struct mtk_mutex *mutex) } EXPORT_SYMBOL_GPL(mtk_mutex_enable); +void mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex, + struct cmdq_pkt *pkt) +{ +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx, + mutex[mutex->id]); + + WARN_ON(&mtx->mutex[mutex->id] != mutex); + + cmdq_pkt_write_mask(pkt, mtx->cmdq_reg.subsys, + mtx->aaddr + DISP_REG_MUTEX_EN(mutex->id), + MTK_MUTEX_ENABLE, MTK_MUTEX_ENABLE); +#endif +} +EXPORT_SYMBOL_GPL(mtk_mutex_enable_by_cmdq); + void mtk_mutex_disable(struct mtk_mutex *mutex) { struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx, @@ -677,7 +703,7 @@ static int mtk_mutex_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct mtk_mutex_ctx *mtx; - struct resource *regs; + struct resource *regs, addr; int i; mtx = devm_kzalloc(dev, sizeof(*mtx), GFP_KERNEL); @@ -698,6 +724,20 @@ static int mtk_mutex_probe(struct platform_device *pdev) } } + if (of_address_to_resource(dev->of_node, 0, &addr) < 0) + mtx->addr = 0L; + else + mtx->addr = addr.start; + +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + if (mtx->data->has_gce_client_reg) { + if (cmdq_dev_get_client_reg(dev, &mtx->cmdq_reg, 0)) { + dev_err(dev, "No mediatek,gce-client-reg!\n"); + return ret; + } + } +#endif + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); mtx->regs = devm_ioremap_resource(dev, regs); if (IS_ERR(mtx->regs)) { diff --git a/include/linux/soc/mediatek/mtk-mutex.h b/include/linux/soc/mediatek/mtk-mutex.h index c8355bb0e6d6..18a4b1dc3773 100644 --- a/include/linux/soc/mediatek/mtk-mutex.h +++ b/include/linux/soc/mediatek/mtk-mutex.h @@ -45,6 +45,8 @@ void mtk_mutex_set_mod(struct mtk_mutex *mutex, void mtk_mutex_set_sof(struct mtk_mutex *mutex, enum mtk_mutex_table_index idx); void mtk_mutex_enable(struct mtk_mutex *mutex); +void mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex, + struct cmdq_pkt *pkt); void mtk_mutex_disable(struct mtk_mutex *mutex); void mtk_mutex_remove_comp(struct mtk_mutex *mutex, enum mtk_ddp_comp_id id);