From: Srinivas Neeli <srinivas.neeli@xilinx.com> To: linux@roeck-us.net, michal.simek@xilinx.com, shubhrajyoti.datta@xilinx.com, sgoud@xilinx.com Cc: wim@linux-watchdog.org, linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, git@xilinx.com Subject: [PATCH 4/9] watchdog: of_xilinx_wdt: Initialize watchdog via data structure Date: Thu, 16 Jan 2020 18:56:52 +0530 Message-ID: <1579181217-31127-5-git-send-email-srinivas.neeli@xilinx.com> (raw) In-Reply-To: <1579181217-31127-1-git-send-email-srinivas.neeli@xilinx.com> This patch is preparation for adding new watchdog based on this driver. of_id->data is storing link xwdt_devtype_data which stores watchdog info and ops pointers to structures. Signed-off-by: Srinivas Goud <srinivas.goud@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com> --- drivers/watchdog/of_xilinx_wdt.c | 50 +++++++++++++++++++++++++++++----------- 1 file changed, 36 insertions(+), 14 deletions(-) diff --git a/drivers/watchdog/of_xilinx_wdt.c b/drivers/watchdog/of_xilinx_wdt.c index 9e67b598907e..b2ce1b90237e 100644 --- a/drivers/watchdog/of_xilinx_wdt.c +++ b/drivers/watchdog/of_xilinx_wdt.c @@ -37,6 +37,11 @@ #define WATCHDOG_NAME "Xilinx Watchdog" +struct xwdt_devtype_data { + const struct watchdog_ops *xwdt_ops; + const struct watchdog_info *xwdt_info; +}; + struct xwdt_device { void __iomem *base; u32 wdt_interval; @@ -160,6 +165,20 @@ static void xwdt_clk_disable_unprepare(void *data) clk_disable_unprepare(data); } +static const struct xwdt_devtype_data xwdt_wdt_data = { + .xwdt_info = &xilinx_wdt_ident, + .xwdt_ops = &xilinx_wdt_ops, +}; + +static const struct of_device_id xwdt_of_match[] = { + { .compatible = "xlnx,xps-timebase-wdt-1.00.a", + .data = &xwdt_wdt_data }, + { .compatible = "xlnx,xps-timebase-wdt-1.01.a", + .data = &xwdt_wdt_data }, + {}, +}; +MODULE_DEVICE_TABLE(of, xwdt_of_match); + static int xwdt_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -167,14 +186,23 @@ static int xwdt_probe(struct platform_device *pdev) u32 pfreq = 0, enable_once = 0; struct xwdt_device *xdev; struct watchdog_device *xilinx_wdt_wdd; + const struct of_device_id *of_id; + const struct xwdt_devtype_data *devtype; xdev = devm_kzalloc(dev, sizeof(*xdev), GFP_KERNEL); if (!xdev) return -ENOMEM; xilinx_wdt_wdd = &xdev->xilinx_wdt_wdd; - xilinx_wdt_wdd->info = &xilinx_wdt_ident; - xilinx_wdt_wdd->ops = &xilinx_wdt_ops; + + of_id = of_match_device(xwdt_of_match, &pdev->dev); + if (!of_id) + return -EINVAL; + + devtype = of_id->data; + + xilinx_wdt_wdd->info = devtype->xwdt_info; + xilinx_wdt_wdd->ops = devtype->xwdt_ops; xilinx_wdt_wdd->parent = dev; xdev->base = devm_platform_ioremap_resource(pdev, 0); @@ -264,9 +292,10 @@ static int xwdt_probe(struct platform_device *pdev) static int __maybe_unused xwdt_suspend(struct device *dev) { struct xwdt_device *xdev = dev_get_drvdata(dev); + struct watchdog_device *xilinx_wdt_wdd = &xdev->xilinx_wdt_wdd; - if (watchdog_active(&xdev->xilinx_wdt_wdd)) - xilinx_wdt_stop(&xdev->xilinx_wdt_wdd); + if (watchdog_active(xilinx_wdt_wdd)) + xilinx_wdt_wdd->ops->stop(xilinx_wdt_wdd); return 0; } @@ -280,24 +309,17 @@ static int __maybe_unused xwdt_suspend(struct device *dev) static int __maybe_unused xwdt_resume(struct device *dev) { struct xwdt_device *xdev = dev_get_drvdata(dev); + struct watchdog_device *xilinx_wdt_wdd = &xdev->xilinx_wdt_wdd; int ret = 0; - if (watchdog_active(&xdev->xilinx_wdt_wdd)) - ret = xilinx_wdt_start(&xdev->xilinx_wdt_wdd); + if (watchdog_active(xilinx_wdt_wdd)) + ret = xilinx_wdt_wdd->ops->start(xilinx_wdt_wdd); return ret; } static SIMPLE_DEV_PM_OPS(xwdt_pm_ops, xwdt_suspend, xwdt_resume); -/* Match table for of_platform binding */ -static const struct of_device_id xwdt_of_match[] = { - { .compatible = "xlnx,xps-timebase-wdt-1.00.a", }, - { .compatible = "xlnx,xps-timebase-wdt-1.01.a", }, - {}, -}; -MODULE_DEVICE_TABLE(of, xwdt_of_match); - static struct platform_driver xwdt_driver = { .probe = xwdt_probe, .driver = { -- 2.7.4
next prev parent reply index Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-01-16 13:26 [PATCH 0/9] watchdog: of_xilinx_wdt: Update on watchdog driver Srinivas Neeli 2020-01-16 13:26 ` [PATCH 1/9] watchdog: of_xilinx_wdt: Add comment to spinlock Srinivas Neeli 2020-01-16 15:48 ` Guenter Roeck 2020-01-16 13:26 ` [PATCH 2/9] watchdog: of_xilinx_wdt: Used BIT macro Srinivas Neeli 2020-01-16 15:04 ` Guenter Roeck 2020-01-16 13:26 ` [PATCH 3/9] watchdog: of_xilinx_wdt: Used dev_dbg() Srinivas Neeli 2020-01-16 13:26 ` Srinivas Neeli [this message] 2020-01-16 13:26 ` [PATCH 5/9] watchdog: of_xilinx_wdt: Introduce wdttype enum for identification Srinivas Neeli 2020-01-16 13:26 ` [PATCH 6/9] dt-bindings: watchdog: xilinx: Add binding for Versal watchdog Srinivas Neeli 2020-01-16 13:26 ` [PATCH 7/9] watchdog: of_xilinx_wdt: Add Versal support Srinivas Neeli 2020-01-16 15:07 ` Guenter Roeck 2020-01-16 13:26 ` [PATCH 8/9] watchdog: of_xilinx_wdt: Wire setting up timeout via module parameter/DT Srinivas Neeli 2020-01-16 13:26 ` [PATCH 9/9] watchdog: of_xilinx_wdt: Skip printing pointer value Srinivas Neeli
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1579181217-31127-5-git-send-email-srinivas.neeli@xilinx.com \ --to=srinivas.neeli@xilinx.com \ --cc=git@xilinx.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-watchdog@vger.kernel.org \ --cc=linux@roeck-us.net \ --cc=michal.simek@xilinx.com \ --cc=sgoud@xilinx.com \ --cc=shubhrajyoti.datta@xilinx.com \ --cc=wim@linux-watchdog.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
Linux-Watchdog Archive on lore.kernel.org Archives are clonable: git clone --mirror https://lore.kernel.org/linux-watchdog/0 linux-watchdog/git/0.git # If you have public-inbox 1.1+ installed, you may # initialize and index your mirror using the following commands: public-inbox-init -V2 linux-watchdog linux-watchdog/ https://lore.kernel.org/linux-watchdog \ linux-watchdog@vger.kernel.org public-inbox-index linux-watchdog Example config snippet for mirrors Newsgroup available over NNTP: nntp://nntp.lore.kernel.org/org.kernel.vger.linux-watchdog AGPL code for this site: git clone https://public-inbox.org/public-inbox.git