From patchwork Thu Feb 16 10:36:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13142853 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2DCF4C636D6 for ; Thu, 16 Feb 2023 10:37:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ruPGHNtYQvzx5DQO/jAzzLQChsSs2jAZvg0+4O+i2Do=; b=RoKFkwVo7GGVIh VMtQeOs29GEDql7+sFsm0VvH8vZR8O2fB0JLJWQZILe52YgrbCmiv7rzjklbFqhxZ83JHqT6EGce2 WKEcxpgNdmqKAKX1Dvakj4bYIdA6dxWqmqL5unvWPFX1T4iNqdTQvBqn1CE8aldkhCLn7S0Ptzqhh i/WodTXzEjBDP4fkA7cavdS6IRZe+BQAxazjeNSSmP7h5coFwOjMcifXGwzBME6DCDS37OT4VCaSE +hd36r15JNgekXxwCQeG/KQft3oYZldH0XohllthSJ1Nzbt+5Eo/Zwf0NiEvPLY5vFOY53g8FtAAm tAPOvdYNDIDCDVbDFySg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pSbda-009bQl-41; Thu, 16 Feb 2023 10:37:14 +0000 Received: from metis.ext.pengutronix.de ([85.220.165.71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pSbd0-009b09-13 for linux-rockchip@lists.infradead.org; Thu, 16 Feb 2023 10:36:39 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pSbcs-0003cs-1z; Thu, 16 Feb 2023 11:36:30 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pSbco-005Kmh-ED; Thu, 16 Feb 2023 11:36:27 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pSbcn-002WiJ-VZ; Thu, 16 Feb 2023 11:36:25 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pengutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH v3 07/19] PM / devfreq: rockchip-dfi: introduce channel mask Date: Thu, 16 Feb 2023 11:36:12 +0100 Message-Id: <20230216103624.591901-8-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230216103624.591901-1-s.hauer@pengutronix.de> References: <20230216103624.591901-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230216_023638_194607_5C214B50 X-CRM114-Status: GOOD ( 18.39 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Different Rockchip SoC variants have a different number of channels. Introduce a channel mask to make the number of channels configurable from SoC initialization code. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 25d64d9166a9a..18d578730fd0c 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -21,7 +21,7 @@ #include -#define RK3399_DMC_NUM_CH 2 +#define DMC_MAX_CHANNELS 2 /* DDRMON_CTRL */ #define DDRMON_CTRL 0x04 @@ -44,7 +44,7 @@ struct dmc_count_channel { }; struct dmc_count { - struct dmc_count_channel c[RK3399_DMC_NUM_CH]; + struct dmc_count_channel c[DMC_MAX_CHANNELS]; }; /* @@ -62,6 +62,7 @@ struct rockchip_dfi { struct regmap *regmap_pmu; struct clk *clk; u32 ddr_type; + unsigned int channel_mask; }; static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) @@ -96,7 +97,9 @@ static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev, struct dm u32 i; void __iomem *dfi_regs = dfi->regs; - for (i = 0; i < RK3399_DMC_NUM_CH; i++) { + for (i = 0; i < DMC_MAX_CHANNELS; i++) { + if (!(dfi->channel_mask & BIT(i))) + continue; count->c[i].access = readl_relaxed(dfi_regs + DDRMON_CH0_DFI_ACCESS_NUM + i * 20); count->c[i].total = readl_relaxed(dfi_regs + @@ -146,9 +149,14 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, rockchip_dfi_read_counters(edev, &count); /* We can only report one channel, so find the busiest one */ - for (i = 0; i < RK3399_DMC_NUM_CH; i++) { - u32 a = count.c[i].access - last->c[i].access; - u32 t = count.c[i].total - last->c[i].total; + for (i = 0; i < DMC_MAX_CHANNELS; i++) { + u32 a, t; + + if (!(dfi->channel_mask & BIT(i))) + continue; + + a = count.c[i].access - last->c[i].access; + t = count.c[i].total - last->c[i].total; if (a > access) { access = a; @@ -186,6 +194,8 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) dfi->ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & RK3399_PMUGRF_DDRTYPE_MASK; + dfi->channel_mask = 3; + return 0; };