From patchwork Wed Jan 22 23:05:08 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ezequiel Garcia X-Patchwork-Id: 3526061 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8FD489F2E9 for ; Thu, 23 Jan 2014 00:11:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C4746201B9 for ; Thu, 23 Jan 2014 00:11:27 +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 DA891201B6 for ; Thu, 23 Jan 2014 00:11:23 +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 1W66uQ-0002JM-Kc; Wed, 22 Jan 2014 23:08:36 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W66tm-0007vd-CY; Wed, 22 Jan 2014 23:07:54 +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 1W66sH-0007lK-P1 for linux-arm-kernel@lists.infradead.org; Wed, 22 Jan 2014 23:06:25 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id 5F08981A; Thu, 23 Jan 2014 00:06:02 +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=-4.8 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 4AF057DF; Thu, 23 Jan 2014 00:05:57 +0100 (CET) From: Ezequiel Garcia To: , , Subject: [PATCH v4 11/18] watchdog: orion: Introduce per-compatible of_device_id data Date: Wed, 22 Jan 2014 20:05:08 -0300 Message-Id: <1390431915-5115-12-git-send-email-ezequiel.garcia@free-electrons.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1390431915-5115-1-git-send-email-ezequiel.garcia@free-electrons.com> References: <1390431915-5115-1-git-send-email-ezequiel.garcia@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140122_180622_081130_103E2CF5 X-CRM114-Status: GOOD ( 14.87 ) X-Spam-Score: -1.8 (-) Cc: Thomas Petazzoni , Andrew Lunn , Tawfik Bayouk , Arnd Bergmann , Daniel Lezcano , Jason Gunthorpe , Wim Van Sebroeck , Lior Amsalem , Ezequiel Garcia , Gregory Clement , Fabio Estevam , Jason Cooper , 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 This commit adds an orion_watchdog_data structure to hold compatible-data information. This allows to remove the driver-wide definition and to be able to add support for multiple compatible-strings in the future. Signed-off-by: Ezequiel Garcia Reviewed-by: Guenter Roeck --- drivers/watchdog/orion_wdt.c | 58 +++++++++++++++++++++++++++++++------------- 1 file changed, 41 insertions(+), 17 deletions(-) diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c index 96dba41..c978bcd 100644 --- a/drivers/watchdog/orion_wdt.c +++ b/drivers/watchdog/orion_wdt.c @@ -24,6 +24,7 @@ #include #include #include +#include /* RSTOUT mask register physical address for Orion5x, Kirkwood and Dove */ #define ORION_RSTOUT_MASK_OFFSET 0x20108 @@ -35,29 +36,33 @@ * Watchdog timer block registers. */ #define TIMER_CTRL 0x0000 -#define WDT_EN 0x0010 -#define WDT_VAL 0x0024 #define WDT_MAX_CYCLE_COUNT 0xffffffff -#define WDT_RESET_OUT_EN BIT(1) - static bool nowayout = WATCHDOG_NOWAYOUT; static int heartbeat = -1; /* module parameter (seconds) */ +struct orion_watchdog_data { + int wdt_counter_offset; + int wdt_enable_bit; + int rstout_enable_bit; +}; + struct orion_watchdog { struct watchdog_device wdt; void __iomem *reg; void __iomem *rstout; unsigned long clk_rate; struct clk *clk; + const struct orion_watchdog_data *data; }; static int orion_wdt_ping(struct watchdog_device *wdt_dev) { struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); /* Reload watchdog duration */ - writel(dev->clk_rate * wdt_dev->timeout, dev->reg + WDT_VAL); + writel(dev->clk_rate * wdt_dev->timeout, + dev->reg + dev->data->wdt_counter_offset); return 0; } @@ -66,13 +71,16 @@ static int orion_wdt_start(struct watchdog_device *wdt_dev) struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); /* Set watchdog duration */ - writel(dev->clk_rate * wdt_dev->timeout, dev->reg + WDT_VAL); + writel(dev->clk_rate * wdt_dev->timeout, + dev->reg + dev->data->wdt_counter_offset); /* Enable watchdog timer */ - atomic_io_modify(dev->reg + TIMER_CTRL, WDT_EN, WDT_EN); + atomic_io_modify(dev->reg + TIMER_CTRL, dev->data->wdt_enable_bit, + dev->data->wdt_enable_bit); /* Enable reset on watchdog */ - atomic_io_modify(dev->rstout, WDT_RESET_OUT_EN, WDT_RESET_OUT_EN); + atomic_io_modify(dev->rstout, dev->data->rstout_enable_bit, + dev->data->rstout_enable_bit); return 0; } @@ -82,10 +90,10 @@ static int orion_wdt_stop(struct watchdog_device *wdt_dev) struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); /* Disable reset on watchdog */ - atomic_io_modify(dev->rstout, WDT_RESET_OUT_EN, 0); + atomic_io_modify(dev->rstout, dev->data->rstout_enable_bit, 0); /* Disable watchdog timer */ - atomic_io_modify(dev->reg + TIMER_CTRL, WDT_EN, 0); + atomic_io_modify(dev->reg + TIMER_CTRL, dev->data->wdt_enable_bit, 0); return 0; } @@ -93,7 +101,7 @@ static int orion_wdt_stop(struct watchdog_device *wdt_dev) static unsigned int orion_wdt_get_timeleft(struct watchdog_device *wdt_dev) { struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); - return readl(dev->reg + WDT_VAL) / dev->clk_rate; + return readl(dev->reg + dev->data->wdt_counter_offset) / dev->clk_rate; } static int orion_wdt_set_timeout(struct watchdog_device *wdt_dev, @@ -150,9 +158,25 @@ static void __iomem * try_rstout_ioremap(struct platform_device *pdev, return devm_ioremap(&pdev->dev, rstout, 0x4); } +static const struct orion_watchdog_data orion_data = { + .rstout_enable_bit = BIT(1), + .wdt_enable_bit = BIT(4), + .wdt_counter_offset = 0x24, +}; + +static const struct of_device_id orion_wdt_of_match_table[] = { + { + .compatible = "marvell,orion-wdt", + .data = &orion_data, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, orion_wdt_of_match_table); + static int orion_wdt_probe(struct platform_device *pdev) { struct orion_watchdog *dev; + const struct of_device_id *match; unsigned int wdt_max_duration; /* (seconds) */ struct resource *res; int ret, irq; @@ -162,9 +186,15 @@ static int orion_wdt_probe(struct platform_device *pdev) if (!dev) return -ENOMEM; + match = of_match_device(orion_wdt_of_match_table, &pdev->dev); + if (!match) + /* Default legacy match */ + match = &orion_wdt_of_match_table[0]; + dev->wdt.info = &orion_wdt_info; dev->wdt.ops = &orion_wdt_ops; dev->wdt.min_timeout = 1; + dev->data = match->data; dev->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(dev->clk)) { @@ -252,12 +282,6 @@ static void orion_wdt_shutdown(struct platform_device *pdev) orion_wdt_stop(wdt_dev); } -static const struct of_device_id orion_wdt_of_match_table[] = { - { .compatible = "marvell,orion-wdt", }, - {}, -}; -MODULE_DEVICE_TABLE(of, orion_wdt_of_match_table); - static struct platform_driver orion_wdt_driver = { .probe = orion_wdt_probe, .remove = orion_wdt_remove,