/* * Copyright (C) ST-Ericsson SA 2011-2013 * * License Terms: GNU General Public License v2 * * Author: Mathieu Poirier for ST-Ericsson * Author: Jonas Aaberg for ST-Ericsson */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include #include #include #include #define WATCHDOG_TIMEOUT 600 /* 10 minutes */ #define WATCHDOG_MIN 0 #define WATCHDOG_MAX28 268435 /* 28 bit resolution in ms == 268435.455 s */ #define WATCHDOG_MAX32 4294967 /* 32 bit resolution in ms == 4294967.295 s */ static unsigned int timeout = WATCHDOG_TIMEOUT; module_param(timeout, uint, 0); MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. default=" __MODULE_STRING(WATCHDOG_TIMEOUT) "."); static bool nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, bool, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); static int ux500_wdt_start(struct watchdog_device *wdd) { return prcmu_enable_a9wdog(PRCMU_WDOG_ALL); } static int ux500_wdt_stop(struct watchdog_device *wdd) { return prcmu_disable_a9wdog(PRCMU_WDOG_ALL); } static int ux500_wdt_keepalive(struct watchdog_device *wdd) { return prcmu_kick_a9wdog(PRCMU_WDOG_ALL); } static int ux500_wdt_set_timeout(struct watchdog_device *wdd, unsigned int timeout) { ux500_wdt_stop(wdd); prcmu_load_a9wdog(PRCMU_WDOG_ALL, timeout * 1000); ux500_wdt_start(wdd); return 0; } static const struct watchdog_info ux500_wdt_info = { .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, .identity = "Ux500 WDT", .firmware_version = 1, }; static const struct watchdog_ops ux500_wdt_ops = { .owner = THIS_MODULE, .start = ux500_wdt_start, .stop = ux500_wdt_stop, .ping = ux500_wdt_keepalive, .set_timeout = ux500_wdt_set_timeout, }; static struct watchdog_device ux500_wdt = { .info = &ux500_wdt_info, .ops = &ux500_wdt_ops, .min_timeout = WATCHDOG_MIN, .max_timeout = WATCHDOG_MAX32, }; static int ux500_wdt_probe(struct platform_device *pdev) { int ret; struct ux500_wdt_data *pdata = dev_get_platdata(&pdev->dev); if (pdata) { if (pdata->timeout > 0) timeout = pdata->timeout; if (pdata->has_28_bits_resolution) ux500_wdt.max_timeout = WATCHDOG_MAX28; } ux500_wdt.parent = &pdev->dev; watchdog_set_nowayout(&ux500_wdt, nowayout); /* disable auto off on sleep */ prcmu_config_a9wdog(PRCMU_WDOG_CPU1, false); /* set HW initial value */ prcmu_load_a9wdog(PRCMU_WDOG_ALL, timeout * 1000); ret = watchdog_register_device(&ux500_wdt); if (ret) return ret; dev_info(&pdev->dev, "initialized\n"); return 0; } static int ux500_wdt_remove(struct platform_device *dev) { watchdog_unregister_device(&ux500_wdt); return 0; } #ifdef CONFIG_PM static int ux500_wdt_suspend(struct platform_device *pdev, pm_message_t state) { if (watchdog_active(&ux500_wdt)) { ux500_wdt_stop(&ux500_wdt); prcmu_config_a9wdog(PRCMU_WDOG_CPU1, true); prcmu_load_a9wdog(PRCMU_WDOG_ALL, timeout * 1000); ux500_wdt_start(&ux500_wdt); } return 0; } static int ux500_wdt_resume(struct platform_device *pdev) { if (watchdog_active(&ux500_wdt)) { ux500_wdt_stop(&ux500_wdt); prcmu_config_a9wdog(PRCMU_WDOG_CPU1, false); prcmu_load_a9wdog(PRCMU_WDOG_ALL, timeout * 1000); ux500_wdt_start(&ux500_wdt); } return 0; } #else #define ux500_wdt_suspend NULL #define ux500_wdt_resume NULL #endif static struct platform_driver ux500_wdt_driver = { .probe = ux500_wdt_probe, .remove = ux500_wdt_remove, .suspend = ux500_wdt_suspend, .resume = ux500_wdt_resume, .driver = { .name = "ux500_wdt", }, }; module_platform_driver(ux500_wdt_driver); MODULE_AUTHOR("Jonas Aaberg "); MODULE_DESCRIPTION("Ux500 Watchdog Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:ux500_wdt"); alue='9'>9space:mode:
authorNicolae Rosia <Nicolae_Rosia@mentor.com>2016-11-12 14:42:14 +0200
committerMark Brown <broonie@kernel.org>2016-11-16 18:03:39 +0000
commitdab780a3b489b038a47d8fbbc49c33aae1e7a682 (patch)
treec9599a6970c187f95f7875d2a3e948f05cef1e45 /tools/testing/radix-tree
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: twl-regulator: rework fixed regulator definition
TWL603X and TWL4030 are different and have different code logic. Rework the regulator definition method so we can split the file easily in twl4030 and twl6030. Signed-off-by: Nicolae Rosia <Nicolae_Rosia@mentor.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/testing/radix-tree')