^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2016 National Instruments Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/watchdog.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define LOCK 0xA5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define UNLOCK 0x5A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define WDT_CTRL_RESET_EN BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define WDT_RELOAD_PORT_EN BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define WDT_CTRL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define WDT_RELOAD_CTRL 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define WDT_PRESET_PRESCALE 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define WDT_REG_LOCK 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define WDT_COUNT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define WDT_RELOAD_PORT 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define WDT_MIN_TIMEOUT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define WDT_MAX_TIMEOUT 464
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define WDT_DEFAULT_TIMEOUT 80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define WDT_MAX_COUNTER 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static unsigned int timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) module_param(timeout, uint, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) MODULE_PARM_DESC(timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) "Watchdog timeout in seconds. (default="
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) __MODULE_STRING(WDT_DEFAULT_TIMEOUT) ")");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static bool nowayout = WATCHDOG_NOWAYOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) module_param(nowayout, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) MODULE_PARM_DESC(nowayout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) "Watchdog cannot be stopped once started. (default="
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct nic7018_wdt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u16 io_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u32 period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct watchdog_device wdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct nic7018_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u32 period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) u8 divider;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static const struct nic7018_config nic7018_configs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) { 2, 4 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) { 32, 5 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static inline u32 nic7018_timeout(u32 period, u8 counter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return period * counter - period / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static const struct nic7018_config *nic7018_get_config(u32 timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u8 *counter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) const struct nic7018_config *config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) u8 count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (timeout < 30 && timeout != 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) config = &nic7018_configs[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) count = timeout / 2 + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) config = &nic7018_configs[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) count = DIV_ROUND_UP(timeout + 16, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (count > WDT_MAX_COUNTER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) count = WDT_MAX_COUNTER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) *counter = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static int nic7018_set_timeout(struct watchdog_device *wdd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct nic7018_wdt *wdt = watchdog_get_drvdata(wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) const struct nic7018_config *config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u8 counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) config = nic7018_get_config(timeout, &counter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) outb(counter << 4 | config->divider,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) wdt->io_base + WDT_PRESET_PRESCALE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) wdd->timeout = nic7018_timeout(config->period, counter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) wdt->period = config->period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int nic7018_start(struct watchdog_device *wdd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct nic7018_wdt *wdt = watchdog_get_drvdata(wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) u8 control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) nic7018_set_timeout(wdd, wdd->timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) control = inb(wdt->io_base + WDT_RELOAD_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) outb(control | WDT_RELOAD_PORT_EN, wdt->io_base + WDT_RELOAD_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) outb(1, wdt->io_base + WDT_RELOAD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) control = inb(wdt->io_base + WDT_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) outb(control | WDT_CTRL_RESET_EN, wdt->io_base + WDT_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int nic7018_stop(struct watchdog_device *wdd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct nic7018_wdt *wdt = watchdog_get_drvdata(wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) outb(0, wdt->io_base + WDT_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) outb(0, wdt->io_base + WDT_RELOAD_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) outb(0xF0, wdt->io_base + WDT_PRESET_PRESCALE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static int nic7018_ping(struct watchdog_device *wdd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct nic7018_wdt *wdt = watchdog_get_drvdata(wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) outb(1, wdt->io_base + WDT_RELOAD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static unsigned int nic7018_get_timeleft(struct watchdog_device *wdd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct nic7018_wdt *wdt = watchdog_get_drvdata(wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u8 count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) count = inb(wdt->io_base + WDT_COUNT) & 0xF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (!count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return nic7018_timeout(wdt->period, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static const struct watchdog_info nic7018_wdd_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .identity = "NIC7018 Watchdog",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static const struct watchdog_ops nic7018_wdd_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .start = nic7018_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .stop = nic7018_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .ping = nic7018_ping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .set_timeout = nic7018_set_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .get_timeleft = nic7018_get_timeleft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static int nic7018_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct watchdog_device *wdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct nic7018_wdt *wdt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct resource *io_rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (!wdt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) platform_set_drvdata(pdev, wdt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) io_rc = platform_get_resource(pdev, IORESOURCE_IO, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (!io_rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) dev_err(dev, "missing IO resources\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (!devm_request_region(dev, io_rc->start, resource_size(io_rc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) KBUILD_MODNAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) dev_err(dev, "failed to get IO region\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) wdt->io_base = io_rc->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) wdd = &wdt->wdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) wdd->info = &nic7018_wdd_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) wdd->ops = &nic7018_wdd_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) wdd->min_timeout = WDT_MIN_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) wdd->max_timeout = WDT_MAX_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) wdd->timeout = WDT_DEFAULT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) wdd->parent = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) watchdog_set_drvdata(wdd, wdt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) watchdog_set_nowayout(wdd, nowayout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) watchdog_init_timeout(wdd, timeout, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /* Unlock WDT register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) outb(UNLOCK, wdt->io_base + WDT_REG_LOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) ret = watchdog_register_device(wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) outb(LOCK, wdt->io_base + WDT_REG_LOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) dev_dbg(dev, "io_base=0x%04X, timeout=%d, nowayout=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) wdt->io_base, timeout, nowayout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static int nic7018_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct nic7018_wdt *wdt = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) watchdog_unregister_device(&wdt->wdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /* Lock WDT register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) outb(LOCK, wdt->io_base + WDT_REG_LOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static const struct acpi_device_id nic7018_device_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {"NIC7018", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {"", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) MODULE_DEVICE_TABLE(acpi, nic7018_device_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static struct platform_driver watchdog_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .probe = nic7018_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .remove = nic7018_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .acpi_match_table = ACPI_PTR(nic7018_device_ids),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) module_platform_driver(watchdog_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) MODULE_DESCRIPTION("National Instruments NIC7018 Watchdog driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) MODULE_AUTHOR("Hui Chun Ong <hui.chun.ong@ni.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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