wm831x_wdt.c (c1144d29f405ce1f4e6ede6482beb3d0d09750c6) wm831x_wdt.c (30f57e0f22bb94e0226febde03a012db3cc328f1)
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Watchdog driver for the wm831x PMICs
4 *
5 * Copyright (C) 2009 Wolfson Microelectronics
6 */
7
8#include <linux/module.h>

--- 166 unchanged lines hidden (view full) ---

175 .start = wm831x_wdt_start,
176 .stop = wm831x_wdt_stop,
177 .ping = wm831x_wdt_ping,
178 .set_timeout = wm831x_wdt_set_timeout,
179};
180
181static int wm831x_wdt_probe(struct platform_device *pdev)
182{
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Watchdog driver for the wm831x PMICs
4 *
5 * Copyright (C) 2009 Wolfson Microelectronics
6 */
7
8#include <linux/module.h>

--- 166 unchanged lines hidden (view full) ---

175 .start = wm831x_wdt_start,
176 .stop = wm831x_wdt_stop,
177 .ping = wm831x_wdt_ping,
178 .set_timeout = wm831x_wdt_set_timeout,
179};
180
181static int wm831x_wdt_probe(struct platform_device *pdev)
182{
183 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
184 struct wm831x_pdata *chip_pdata = dev_get_platdata(pdev->dev.parent);
183 struct device *dev = &pdev->dev;
184 struct wm831x *wm831x = dev_get_drvdata(dev->parent);
185 struct wm831x_pdata *chip_pdata = dev_get_platdata(dev->parent);
185 struct wm831x_watchdog_pdata *pdata;
186 struct wm831x_wdt_drvdata *driver_data;
187 struct watchdog_device *wm831x_wdt;
188 int reg, ret, i;
189
190 ret = wm831x_reg_read(wm831x, WM831X_WATCHDOG);
191 if (ret < 0) {
192 dev_err(wm831x->dev, "Failed to read watchdog status: %d\n",
193 ret);
194 return ret;
195 }
196 reg = ret;
197
198 if (reg & WM831X_WDOG_DEBUG)
199 dev_warn(wm831x->dev, "Watchdog is paused\n");
200
186 struct wm831x_watchdog_pdata *pdata;
187 struct wm831x_wdt_drvdata *driver_data;
188 struct watchdog_device *wm831x_wdt;
189 int reg, ret, i;
190
191 ret = wm831x_reg_read(wm831x, WM831X_WATCHDOG);
192 if (ret < 0) {
193 dev_err(wm831x->dev, "Failed to read watchdog status: %d\n",
194 ret);
195 return ret;
196 }
197 reg = ret;
198
199 if (reg & WM831X_WDOG_DEBUG)
200 dev_warn(wm831x->dev, "Watchdog is paused\n");
201
201 driver_data = devm_kzalloc(&pdev->dev, sizeof(*driver_data),
202 GFP_KERNEL);
202 driver_data = devm_kzalloc(dev, sizeof(*driver_data), GFP_KERNEL);
203 if (!driver_data)
204 return -ENOMEM;
205
206 mutex_init(&driver_data->lock);
207 driver_data->wm831x = wm831x;
208
209 wm831x_wdt = &driver_data->wdt;
210
211 wm831x_wdt->info = &wm831x_wdt_info;
212 wm831x_wdt->ops = &wm831x_wdt_ops;
203 if (!driver_data)
204 return -ENOMEM;
205
206 mutex_init(&driver_data->lock);
207 driver_data->wm831x = wm831x;
208
209 wm831x_wdt = &driver_data->wdt;
210
211 wm831x_wdt->info = &wm831x_wdt_info;
212 wm831x_wdt->ops = &wm831x_wdt_ops;
213 wm831x_wdt->parent = &pdev->dev;
213 wm831x_wdt->parent = dev;
214 watchdog_set_nowayout(wm831x_wdt, nowayout);
215 watchdog_set_drvdata(wm831x_wdt, driver_data);
216
217 reg = wm831x_reg_read(wm831x, WM831X_WATCHDOG);
218 reg &= WM831X_WDOG_TO_MASK;
219 for (i = 0; i < ARRAY_SIZE(wm831x_wdt_cfgs); i++)
220 if (wm831x_wdt_cfgs[i].val == reg)
221 break;

--- 13 unchanged lines hidden (view full) ---

235 reg &= ~(WM831X_WDOG_SECACT_MASK | WM831X_WDOG_PRIMACT_MASK |
236 WM831X_WDOG_RST_SRC);
237
238 reg |= pdata->primary << WM831X_WDOG_PRIMACT_SHIFT;
239 reg |= pdata->secondary << WM831X_WDOG_SECACT_SHIFT;
240 reg |= pdata->software << WM831X_WDOG_RST_SRC_SHIFT;
241
242 if (pdata->update_gpio) {
214 watchdog_set_nowayout(wm831x_wdt, nowayout);
215 watchdog_set_drvdata(wm831x_wdt, driver_data);
216
217 reg = wm831x_reg_read(wm831x, WM831X_WATCHDOG);
218 reg &= WM831X_WDOG_TO_MASK;
219 for (i = 0; i < ARRAY_SIZE(wm831x_wdt_cfgs); i++)
220 if (wm831x_wdt_cfgs[i].val == reg)
221 break;

--- 13 unchanged lines hidden (view full) ---

235 reg &= ~(WM831X_WDOG_SECACT_MASK | WM831X_WDOG_PRIMACT_MASK |
236 WM831X_WDOG_RST_SRC);
237
238 reg |= pdata->primary << WM831X_WDOG_PRIMACT_SHIFT;
239 reg |= pdata->secondary << WM831X_WDOG_SECACT_SHIFT;
240 reg |= pdata->software << WM831X_WDOG_RST_SRC_SHIFT;
241
242 if (pdata->update_gpio) {
243 ret = devm_gpio_request_one(&pdev->dev,
244 pdata->update_gpio,
245 GPIOF_OUT_INIT_LOW,
246 "Watchdog update");
243 ret = devm_gpio_request_one(dev, pdata->update_gpio,
244 GPIOF_OUT_INIT_LOW,
245 "Watchdog update");
247 if (ret < 0) {
248 dev_err(wm831x->dev,
249 "Failed to request update GPIO: %d\n",
250 ret);
251 return ret;
252 }
253
254 driver_data->update_gpio = pdata->update_gpio;

--- 8 unchanged lines hidden (view full) ---

263 wm831x_reg_lock(wm831x);
264 } else {
265 dev_err(wm831x->dev,
266 "Failed to unlock security key: %d\n", ret);
267 return ret;
268 }
269 }
270
246 if (ret < 0) {
247 dev_err(wm831x->dev,
248 "Failed to request update GPIO: %d\n",
249 ret);
250 return ret;
251 }
252
253 driver_data->update_gpio = pdata->update_gpio;

--- 8 unchanged lines hidden (view full) ---

262 wm831x_reg_lock(wm831x);
263 } else {
264 dev_err(wm831x->dev,
265 "Failed to unlock security key: %d\n", ret);
266 return ret;
267 }
268 }
269
271 ret = devm_watchdog_register_device(&pdev->dev, &driver_data->wdt);
270 ret = devm_watchdog_register_device(dev, &driver_data->wdt);
272 if (ret != 0) {
273 dev_err(wm831x->dev, "watchdog_register_device() failed: %d\n",
274 ret);
275 return ret;
276 }
277
278 return 0;
279}

--- 14 unchanged lines hidden --- 		271 if (ret != 0) {
272 dev_err(wm831x->dev, "watchdog_register_device() failed: %d\n",
273 ret);
274 return ret;
275 }
276
277 return 0;
278}

--- 14 unchanged lines hidden ---