From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59DBCC4BA06 for ; Thu, 27 Feb 2020 08:45:17 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2AE102467B for ; Thu, 27 Feb 2020 08:45:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="so1mHsAt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2AE102467B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZfGrP3+3hk23/1Ps4Cq3VispBx8HWHTey2KpwyjYUtQ=; b=so1mHsAtCBdy8M 30Ih/oq8IYZlC2PVe/v0sAVuhHQ+UNgpZQ3HyRMbWztWcVDwxSO6lixWTkEsJXvnFcLoPnnUHOJah qQWajtKbAWy5X14ZqhVt7u6qB1KL0IO/XaRWVNTukFhnK825LDZnGH+/7SdNXQxM63Aa8yidrzuyN GCneD+7T8lcxio3uApB/yikv+a7DT7qg0uWgejSJWAFdk6lU66TBy9XQR2NProhKen9cw5FS1Oz6m SbEpeZr0Fx2/4p6yuIuuL08jCtNuCcJG5X6/oeI/feXB15jWt1XcXGhu2iZR2uhypQl/sEv8Da+fU QeSOfGPymTbY+r1I2eug==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j7EnE-0003Zd-HB; Thu, 27 Feb 2020 08:45:16 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j7EnA-0003YN-GA; Thu, 27 Feb 2020 08:45:14 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 12DFD295A11 Subject: Re: [PATCH v9 1/4] drm/mediatek: Use regmap for register access To: CK Hu References: <20200226105419.632771-1-enric.balletbo@collabora.com> <20200226105419.632771-2-enric.balletbo@collabora.com> <1582765858.20746.2.camel@mtksdaap41> From: Enric Balletbo i Serra Message-ID: <07976851-8ac4-9c0d-3257-74fd4df74ef0@collabora.com> Date: Thu, 27 Feb 2020 09:45:01 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <1582765858.20746.2.camel@mtksdaap41> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200227_004512_805374_971FDA87 X-CRM114-Status: GOOD ( 22.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, Kate Stewart , Minghsiu Tsai , Andrew-CT Chen , airlied@linux.ie, mturquette@baylibre.com, dri-devel@lists.freedesktop.org, Richard Fontana , laurent.pinchart@ideasonboard.com, ulrich.hecht+renesas@gmail.com, Collabora Kernel ML , linux-clk@vger.kernel.org, Weiyi Lu , wens@csie.org, Allison Randal , mtk01761 , linux-media@vger.kernel.org, devicetree@vger.kernel.org, Daniel Vetter , frank-w@public-files.de, Seiya Wang , sean.wang@mediatek.com, Houlong Wei , robh+dt@kernel.org, linux-mediatek@lists.infradead.org, hsinyi@chromium.org, Matthias Brugger , Thomas Gleixner , Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, Matthias Brugger , sboyd@kernel.org, Greg Kroah-Hartman , rdunlap@infradead.org, linux-kernel@vger.kernel.org, p.zabel@pengutronix.de, matthias.bgg@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi CK, On 27/2/20 2:10, CK Hu wrote: > Hi, Enric: > > On Wed, 2020-02-26 at 11:54 +0100, Enric Balletbo i Serra wrote: >> From: Matthias Brugger >> >> The mmsys memory space is shared between the drm and the >> clk driver. Use regmap to access it. > > Once there is a mmsys driver and clock control is moved into mmsys > driver, I think we should also move routing control into mmsys driver > and we could drop this patch. > Do you want me do this in this series or later? Thanks, Enric > Regards, > CK > >> >> Signed-off-by: Matthias Brugger >> Reviewed-by: Philipp Zabel >> Reviewed-by: CK Hu >> Signed-off-by: Enric Balletbo i Serra >> --- >> >> Changes in v9: None >> Changes in v8: >> - Select REGMAP and MFD_SYSCON (Randy Dunlap) >> >> Changes in v7: >> - Add R-by from CK >> >> drivers/gpu/drm/mediatek/Kconfig | 2 + >> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 +- >> drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 50 +++++++++++-------------- >> drivers/gpu/drm/mediatek/mtk_drm_ddp.h | 4 +- >> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 13 ++----- >> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- >> 6 files changed, 32 insertions(+), 43 deletions(-) >> >> diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig >> index fa5ffc4fe823..89e18a473cb5 100644 >> --- a/drivers/gpu/drm/mediatek/Kconfig >> +++ b/drivers/gpu/drm/mediatek/Kconfig >> @@ -10,8 +10,10 @@ config DRM_MEDIATEK >> select DRM_KMS_HELPER >> select DRM_MIPI_DSI >> select DRM_PANEL >> + select MFD_SYSCON >> select MEMORY >> select MTK_SMI >> + select REGMAP >> select VIDEOMODE_HELPERS >> help >> Choose this option if you have a Mediatek SoCs. >> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c >> index 5ee74d7ce35c..a236499123aa 100644 >> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c >> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c >> @@ -28,7 +28,7 @@ >> * @enabled: records whether crtc_enable succeeded >> * @planes: array of 4 drm_plane structures, one for each overlay plane >> * @pending_planes: whether any plane has pending changes to be applied >> - * @config_regs: memory mapped mmsys configuration register space >> + * @config_regs: regmap mapped mmsys configuration register space >> * @mutex: handle to one of the ten disp_mutex streams >> * @ddp_comp_nr: number of components in ddp_comp >> * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc >> @@ -50,7 +50,7 @@ struct mtk_drm_crtc { >> u32 cmdq_event; >> #endif >> >> - void __iomem *config_regs; >> + struct regmap *config_regs; >> struct mtk_disp_mutex *mutex; >> unsigned int ddp_comp_nr; >> struct mtk_ddp_comp **ddp_comp; >> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c >> index 13035c906035..302753744cc6 100644 >> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c >> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c >> @@ -383,61 +383,53 @@ static unsigned int mtk_ddp_sel_in(enum mtk_ddp_comp_id cur, >> return value; >> } >> >> -static void mtk_ddp_sout_sel(void __iomem *config_regs, >> +static void mtk_ddp_sout_sel(struct regmap *config_regs, >> enum mtk_ddp_comp_id cur, >> enum mtk_ddp_comp_id next) >> { >> if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) { >> - writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1, >> - config_regs + DISP_REG_CONFIG_OUT_SEL); >> + regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL, >> + BLS_TO_DSI_RDMA1_TO_DPI1); >> } else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) { >> - writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI, >> - config_regs + DISP_REG_CONFIG_OUT_SEL); >> - writel_relaxed(DSI_SEL_IN_RDMA, >> - config_regs + DISP_REG_CONFIG_DSI_SEL); >> - writel_relaxed(DPI_SEL_IN_BLS, >> - config_regs + DISP_REG_CONFIG_DPI_SEL); >> + regmap_write(config_regs, DISP_REG_CONFIG_OUT_SEL, >> + BLS_TO_DPI_RDMA1_TO_DSI); >> + regmap_write(config_regs, DISP_REG_CONFIG_DSI_SEL, >> + DSI_SEL_IN_RDMA); >> + regmap_write(config_regs, DISP_REG_CONFIG_DPI_SEL, >> + DPI_SEL_IN_BLS); >> } >> } >> >> -void mtk_ddp_add_comp_to_path(void __iomem *config_regs, >> +void mtk_ddp_add_comp_to_path(struct regmap *config_regs, >> enum mtk_ddp_comp_id cur, >> enum mtk_ddp_comp_id next) >> { >> - unsigned int addr, value, reg; >> + unsigned int addr, value; >> >> value = mtk_ddp_mout_en(cur, next, &addr); >> - if (value) { >> - reg = readl_relaxed(config_regs + addr) | value; >> - writel_relaxed(reg, config_regs + addr); >> - } >> + if (value) >> + regmap_update_bits(config_regs, addr, value, value); >> >> mtk_ddp_sout_sel(config_regs, cur, next); >> >> value = mtk_ddp_sel_in(cur, next, &addr); >> - if (value) { >> - reg = readl_relaxed(config_regs + addr) | value; >> - writel_relaxed(reg, config_regs + addr); >> - } >> + if (value) >> + regmap_update_bits(config_regs, addr, value, value); >> } >> >> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs, >> +void mtk_ddp_remove_comp_from_path(struct regmap *config_regs, >> enum mtk_ddp_comp_id cur, >> enum mtk_ddp_comp_id next) >> { >> - unsigned int addr, value, reg; >> + unsigned int addr, value; >> >> value = mtk_ddp_mout_en(cur, next, &addr); >> - if (value) { >> - reg = readl_relaxed(config_regs + addr) & ~value; >> - writel_relaxed(reg, config_regs + addr); >> - } >> + if (value) >> + regmap_update_bits(config_regs, addr, value, 0); >> >> value = mtk_ddp_sel_in(cur, next, &addr); >> - if (value) { >> - reg = readl_relaxed(config_regs + addr) & ~value; >> - writel_relaxed(reg, config_regs + addr); >> - } >> + if (value) >> + regmap_update_bits(config_regs, addr, value, 0); >> } >> >> struct mtk_disp_mutex *mtk_disp_mutex_get(struct device *dev, unsigned int id) >> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h >> index 827be424a148..01ff8b68881f 100644 >> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.h >> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.h >> @@ -12,10 +12,10 @@ struct regmap; >> struct device; >> struct mtk_disp_mutex; >> >> -void mtk_ddp_add_comp_to_path(void __iomem *config_regs, >> +void mtk_ddp_add_comp_to_path(struct regmap *config_regs, >> enum mtk_ddp_comp_id cur, >> enum mtk_ddp_comp_id next); >> -void mtk_ddp_remove_comp_from_path(void __iomem *config_regs, >> +void mtk_ddp_remove_comp_from_path(struct regmap *config_regs, >> enum mtk_ddp_comp_id cur, >> enum mtk_ddp_comp_id next); >> >> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c >> index 0563c6813333..b68837ea02b3 100644 >> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c >> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c >> @@ -6,6 +6,7 @@ >> >> #include >> #include >> +#include >> #include >> #include >> #include >> @@ -425,7 +426,6 @@ static int mtk_drm_probe(struct platform_device *pdev) >> { >> struct device *dev = &pdev->dev; >> struct mtk_drm_private *private; >> - struct resource *mem; >> struct device_node *node; >> struct component_match *match = NULL; >> int ret; >> @@ -437,14 +437,9 @@ static int mtk_drm_probe(struct platform_device *pdev) >> >> private->data = of_device_get_match_data(dev); >> >> - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); >> - private->config_regs = devm_ioremap_resource(dev, mem); >> - if (IS_ERR(private->config_regs)) { >> - ret = PTR_ERR(private->config_regs); >> - dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n", >> - ret); >> - return ret; >> - } >> + private->config_regs = syscon_node_to_regmap(dev->of_node); >> + if (IS_ERR(private->config_regs)) >> + return PTR_ERR(private->config_regs); >> >> /* Iterate over sibling DISP function blocks */ >> for_each_child_of_node(dev->of_node->parent, node) { >> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h >> index 17bc99b9f5d4..03201080688d 100644 >> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h >> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h >> @@ -39,7 +39,7 @@ struct mtk_drm_private { >> >> struct device_node *mutex_node; >> struct device *mutex_dev; >> - void __iomem *config_regs; >> + struct regmap *config_regs; >> struct device_node *comp_node[DDP_COMPONENT_ID_MAX]; >> struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX]; >> const struct mtk_mmsys_driver_data *data; > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel