65 static int secure_register_read(struct bcm_kona_wdt *wdt, uint32_t offset)  in secure_register_read()  argument
78 		val = readl_relaxed(wdt->base + offset);  in secure_register_read()
84 	if (count > wdt->busy_count)  in secure_register_read()
85 		wdt->busy_count = count;  in secure_register_read()
104 	struct bcm_kona_wdt *wdt = s->private;  in bcm_kona_wdt_dbg_show()  local
106 	if (!wdt)  in bcm_kona_wdt_dbg_show()
109 	spin_lock_irqsave(&wdt->lock, flags);  in bcm_kona_wdt_dbg_show()
110 	ctl_val = secure_register_read(wdt, SECWDOG_CTRL_REG);  in bcm_kona_wdt_dbg_show()
111 	cur_val = secure_register_read(wdt, SECWDOG_COUNT_REG);  in bcm_kona_wdt_dbg_show()
112 	spin_unlock_irqrestore(&wdt->lock, flags);  in bcm_kona_wdt_dbg_show()
122 		ctl_sec = TICKS_TO_SECS(ctl, wdt);  in bcm_kona_wdt_dbg_show()
123 		cur_sec = TICKS_TO_SECS(cur, wdt);  in bcm_kona_wdt_dbg_show()
128 				wdt->resolution, ctl_sec, ctl, ctl, cur_sec,  in bcm_kona_wdt_dbg_show()
129 				cur, cur, wdt->busy_count);  in bcm_kona_wdt_dbg_show()
150 	struct bcm_kona_wdt *wdt = platform_get_drvdata(pdev);  in bcm_kona_wdt_debug_init()  local
152 	if (!wdt)  in bcm_kona_wdt_debug_init()
155 	wdt->debugfs = NULL;  in bcm_kona_wdt_debug_init()
161 	if (debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt,  in bcm_kona_wdt_debug_init()
163 		wdt->debugfs = dir;  in bcm_kona_wdt_debug_init()
170 	struct bcm_kona_wdt *wdt = platform_get_drvdata(pdev);  in bcm_kona_wdt_debug_exit()  local
172 	if (wdt && wdt->debugfs) {  in bcm_kona_wdt_debug_exit()
173 		debugfs_remove_recursive(wdt->debugfs);  in bcm_kona_wdt_debug_exit()
174 		wdt->debugfs = NULL;  in bcm_kona_wdt_debug_exit()
185 static int bcm_kona_wdt_ctrl_reg_modify(struct bcm_kona_wdt *wdt,  in bcm_kona_wdt_ctrl_reg_modify()  argument
192 	spin_lock_irqsave(&wdt->lock, flags);  in bcm_kona_wdt_ctrl_reg_modify()
194 	val = secure_register_read(wdt, SECWDOG_CTRL_REG);  in bcm_kona_wdt_ctrl_reg_modify()
200 		writel_relaxed(val, wdt->base + SECWDOG_CTRL_REG);  in bcm_kona_wdt_ctrl_reg_modify()
203 	spin_unlock_irqrestore(&wdt->lock, flags);  in bcm_kona_wdt_ctrl_reg_modify()
208 static int bcm_kona_wdt_set_resolution_reg(struct bcm_kona_wdt *wdt)  in bcm_kona_wdt_set_resolution_reg()  argument
210 	if (wdt->resolution > SECWDOG_MAX_RES)  in bcm_kona_wdt_set_resolution_reg()
213 	return bcm_kona_wdt_ctrl_reg_modify(wdt, SECWDOG_RES_MASK,  in bcm_kona_wdt_set_resolution_reg()
214 					wdt->resolution << SECWDOG_CLKS_SHIFT);  in bcm_kona_wdt_set_resolution_reg()
220 	struct bcm_kona_wdt *wdt = watchdog_get_drvdata(wdog);  in bcm_kona_wdt_set_timeout_reg()  local
222 	return bcm_kona_wdt_ctrl_reg_modify(wdt, SECWDOG_COUNT_MASK,  in bcm_kona_wdt_set_timeout_reg()
223 					SECS_TO_TICKS(wdog->timeout, wdt) |  in bcm_kona_wdt_set_timeout_reg()
236 	struct bcm_kona_wdt *wdt = watchdog_get_drvdata(wdog);  in bcm_kona_wdt_get_timeleft()  local
240 	spin_lock_irqsave(&wdt->lock, flags);  in bcm_kona_wdt_get_timeleft()
241 	val = secure_register_read(wdt, SECWDOG_COUNT_REG);  in bcm_kona_wdt_get_timeleft()
242 	spin_unlock_irqrestore(&wdt->lock, flags);  in bcm_kona_wdt_get_timeleft()
247 	return TICKS_TO_SECS(val & SECWDOG_COUNT_MASK, wdt);  in bcm_kona_wdt_get_timeleft()
258 	struct bcm_kona_wdt *wdt = watchdog_get_drvdata(wdog);  in bcm_kona_wdt_stop()  local
260 	return bcm_kona_wdt_ctrl_reg_modify(wdt, SECWDOG_EN_MASK |  in bcm_kona_wdt_stop()
294 	struct bcm_kona_wdt *wdt;  in bcm_kona_wdt_probe()  local
298 	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);  in bcm_kona_wdt_probe()
299 	if (!wdt)  in bcm_kona_wdt_probe()
302 	spin_lock_init(&wdt->lock);  in bcm_kona_wdt_probe()
305 	wdt->base = devm_ioremap_resource(dev, res);  in bcm_kona_wdt_probe()
306 	if (IS_ERR(wdt->base))  in bcm_kona_wdt_probe()
309 	wdt->resolution = SECWDOG_DEFAULT_RESOLUTION;  in bcm_kona_wdt_probe()
310 	ret = bcm_kona_wdt_set_resolution_reg(wdt);  in bcm_kona_wdt_probe()
316 	platform_set_drvdata(pdev, wdt);  in bcm_kona_wdt_probe()
317 	watchdog_set_drvdata(&bcm_kona_wdt_wdd, wdt);  in bcm_kona_wdt_probe()