From patchwork Sat Jun 29 11:36:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Kleine-Budde X-Patchwork-Id: 13716903 X-Patchwork-Delegate: kuba@kernel.org Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 C2D084EB2B for ; Sat, 29 Jun 2024 11:40:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719661228; cv=none; b=I6Ym+ySBK2rlorK3IQPnyipV3V9pjBXTVhcxGVGFmgWZb5KkJmEEB57q8xPFeII/zKmfUqrdrcZ/mN7AZtXqFDvcL0fPyFf4phFL99D/oGhEfKd2TG235gM+KJfkxAbhjW2xOjs9rLww4xaBJmVkc+be5J5AkA74EvVoP3I00Tg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719661228; c=relaxed/simple; bh=g9DYHA9n/mS/01ocSc8ZuYgyvsNrXlDHFOkXI35SmPk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MBYo922HtN1nBTUlIxpSG/KWyb630Yll7iDhwpf8ev1q2TQHNu8/peVG0sQkZxzaQ4FK45lCQwbdtJ/jRXfeu0ZbaJhMB466AAs56Kye6CV5DdD66Waj+HdSBzg593R+3NX5yKop47l1jgQcSR2H3TnLLnlMijA7apSOSKGxAjc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sNWRK-00035A-Ry for netdev@vger.kernel.org; Sat, 29 Jun 2024 13:40:22 +0200 Received: from [2a0a:edc0:0:b01:1d::7b] (helo=bjornoya.blackshift.org) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sNWRJ-005pY2-PN for netdev@vger.kernel.org; Sat, 29 Jun 2024 13:40:21 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id 759802F645B for ; Sat, 29 Jun 2024 11:40:21 +0000 (UTC) Received: from hardanger.blackshift.org (unknown [172.20.34.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by bjornoya.blackshift.org (Postfix) with ESMTPS id 5BEDB2F642F; Sat, 29 Jun 2024 11:40:19 +0000 (UTC) Received: from blackshift.org (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id a8328be3; Sat, 29 Jun 2024 11:40:18 +0000 (UTC) From: Marc Kleine-Budde To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org, kernel@pengutronix.de, Geert Uytterhoeven , Wolfram Sang , Vincent Mailhol , Marc Kleine-Budde Subject: [PATCH net-next 01/14] can: rcar_canfd: Simplify clock handling Date: Sat, 29 Jun 2024 13:36:15 +0200 Message-ID: <20240629114017.1080160-2-mkl@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240629114017.1080160-1-mkl@pengutronix.de> References: <20240629114017.1080160-1-mkl@pengutronix.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Geert Uytterhoeven The main CAN clock is either the internal CANFD clock, or the external CAN clock. Hence replace the two-valued enum by a simple boolean flag. Consolidate all CANFD clock handling inside a single branch. Signed-off-by: Geert Uytterhoeven Reviewed-by: Wolfram Sang Reviewed-by: Vincent Mailhol Link: https://lore.kernel.org/all/2cf38c10b83c8e5c04d68b17a930b6d9dbf66f40.1716973640.git.geert+renesas@glider.be Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rcar/rcar_canfd.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) base-commit: 94833addfaba89d12e5dbd82e350a692c00648ab diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index b82842718735..474840b58e8f 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -508,12 +508,6 @@ */ #define RCANFD_CFFIFO_IDX 0 -/* fCAN clock select register settings */ -enum rcar_canfd_fcanclk { - RCANFD_CANFDCLK = 0, /* CANFD clock */ - RCANFD_EXTCLK, /* Externally input clock */ -}; - struct rcar_canfd_global; struct rcar_canfd_hw_info { @@ -545,8 +539,8 @@ struct rcar_canfd_global { struct platform_device *pdev; /* Respective platform device */ struct clk *clkp; /* Peripheral clock */ struct clk *can_clk; /* fCAN clock */ - enum rcar_canfd_fcanclk fcan; /* CANFD or Ext clock */ unsigned long channels_mask; /* Enabled channels mask */ + bool extclk; /* CANFD or Ext clock */ bool fdmode; /* CAN FD or Classical CAN only mode */ struct reset_control *rstc1; struct reset_control *rstc2; @@ -777,7 +771,7 @@ static void rcar_canfd_configure_controller(struct rcar_canfd_global *gpriv) cfg |= RCANFD_GCFG_CMPOC; /* Set External Clock if selected */ - if (gpriv->fcan != RCANFD_CANFDCLK) + if (gpriv->extclk) cfg |= RCANFD_GCFG_DCS; rcar_canfd_set_bit(gpriv->base, RCANFD_GCFG, cfg); @@ -1941,16 +1935,12 @@ static int rcar_canfd_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(gpriv->can_clk), "cannot get canfd clock\n"); - gpriv->fcan = RCANFD_CANFDCLK; - + /* CANFD clock may be further divided within the IP */ + fcan_freq = clk_get_rate(gpriv->can_clk) / info->postdiv; } else { - gpriv->fcan = RCANFD_EXTCLK; + fcan_freq = clk_get_rate(gpriv->can_clk); + gpriv->extclk = true; } - fcan_freq = clk_get_rate(gpriv->can_clk); - - if (gpriv->fcan == RCANFD_CANFDCLK) - /* CANFD clock is further divided by (1/2) within the IP */ - fcan_freq /= info->postdiv; addr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(addr)) { @@ -2060,7 +2050,7 @@ static int rcar_canfd_probe(struct platform_device *pdev) platform_set_drvdata(pdev, gpriv); dev_info(dev, "global operational state (clk %d, fdmode %d)\n", - gpriv->fcan, gpriv->fdmode); + gpriv->extclk, gpriv->fdmode); return 0; fail_channel: