From patchwork Mon Jan 27 15:27:12 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ezequiel Garcia X-Patchwork-Id: 3543211 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 52192C02DC for ; Mon, 27 Jan 2014 16:50:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 40344200F0 for ; Mon, 27 Jan 2014 16:49:59 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D255920131 for ; Mon, 27 Jan 2014 16:49:53 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W7o8x-0004OK-RR; Mon, 27 Jan 2014 15:30:37 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W7o8C-0000zH-94; Mon, 27 Jan 2014 15:29:48 +0000 Received: from top.free-electrons.com ([176.31.233.9] helo=mail.free-electrons.com) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W7o6a-0000lR-CL for linux-arm-kernel@lists.infradead.org; Mon, 27 Jan 2014 15:28:09 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id 46E91812; Mon, 27 Jan 2014 16:28:11 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost.localdomain (unknown [190.2.98.212]) by mail.free-electrons.com (Postfix) with ESMTPA id 024387B2; Mon, 27 Jan 2014 16:28:06 +0100 (CET) From: Ezequiel Garcia To: , , Subject: [PATCH v5 12/20] watchdog: orion: Add per-compatible clock initialization Date: Mon, 27 Jan 2014 12:27:12 -0300 Message-Id: <1390836440-12744-13-git-send-email-ezequiel.garcia@free-electrons.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1390836440-12744-1-git-send-email-ezequiel.garcia@free-electrons.com> References: <1390836440-12744-1-git-send-email-ezequiel.garcia@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140127_102808_665806_F5ACBDCE X-CRM114-Status: GOOD ( 12.97 ) X-Spam-Score: -1.7 (-) Cc: Lior Amsalem , Andrew Lunn , Jason Cooper , Tawfik Bayouk , Daniel Lezcano , Wim Van Sebroeck , Arnd Bergmann , Ezequiel Garcia , Gregory Clement , Guenter Roeck , Sebastian Hesselbarth X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Following the introduction of the compatible-data field, it's now possible to further abstract the clock initialization. This will allow to support SoC with a different clock setup. Reviewed-by: Guenter Roeck Tested-by: Sebastian Hesselbarth Signed-off-by: Ezequiel Garcia --- drivers/watchdog/orion_wdt.c | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c index 540b5c9..4100d5b 100644 --- a/drivers/watchdog/orion_wdt.c +++ b/drivers/watchdog/orion_wdt.c @@ -42,10 +42,14 @@ static bool nowayout = WATCHDOG_NOWAYOUT; static int heartbeat = -1; /* module parameter (seconds) */ +struct orion_watchdog; + struct orion_watchdog_data { int wdt_counter_offset; int wdt_enable_bit; int rstout_enable_bit; + int (*clock_init) (struct platform_device *, + struct orion_watchdog *); }; struct orion_watchdog { @@ -57,6 +61,22 @@ struct orion_watchdog { const struct orion_watchdog_data *data; }; +static int orion_wdt_clock_init(struct platform_device *pdev, + struct orion_watchdog *dev) +{ + int ret; + + dev->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(dev->clk)) + return PTR_ERR(dev->clk); + ret = clk_prepare_enable(dev->clk); + if (ret) + return ret; + + dev->clk_rate = clk_get_rate(dev->clk); + return 0; +} + static int orion_wdt_ping(struct watchdog_device *wdt_dev) { struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); @@ -162,6 +182,7 @@ static const struct orion_watchdog_data orion_data = { .rstout_enable_bit = BIT(1), .wdt_enable_bit = BIT(4), .wdt_counter_offset = 0x24, + .clock_init = orion_wdt_clock_init, }; static const struct of_device_id orion_wdt_of_match_table[] = { @@ -196,16 +217,6 @@ static int orion_wdt_probe(struct platform_device *pdev) dev->wdt.min_timeout = 1; dev->data = match->data; - dev->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(dev->clk)) { - dev_err(&pdev->dev, "Orion Watchdog missing clock\n"); - return PTR_ERR(dev->clk); - } - ret = clk_prepare_enable(dev->clk); - if (ret) - return ret; - dev->clk_rate = clk_get_rate(dev->clk); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { ret = -ENODEV; @@ -226,6 +237,12 @@ static int orion_wdt_probe(struct platform_device *pdev) goto disable_clk; } + ret = dev->data->clock_init(pdev, dev); + if (ret) { + dev_err(&pdev->dev, "cannot initialize clock\n"); + return ret; + } + wdt_max_duration = WDT_MAX_CYCLE_COUNT / dev->clk_rate; dev->wdt.timeout = wdt_max_duration;