134 static u64 sbsa_gwdt_reg_read(struct sbsa_gwdt *gwdt)  in sbsa_gwdt_reg_read()  argument
136 	if (gwdt->version == 0)  in sbsa_gwdt_reg_read()
137 		return readl(gwdt->control_base + SBSA_GWDT_WOR);  in sbsa_gwdt_reg_read()
139 		return lo_hi_readq(gwdt->control_base + SBSA_GWDT_WOR);  in sbsa_gwdt_reg_read()
142 static void sbsa_gwdt_reg_write(u64 val, struct sbsa_gwdt *gwdt)  in sbsa_gwdt_reg_write()  argument
144 	if (gwdt->version == 0)  in sbsa_gwdt_reg_write()
145 		writel((u32)val, gwdt->control_base + SBSA_GWDT_WOR);  in sbsa_gwdt_reg_write()
147 		lo_hi_writeq(val, gwdt->control_base + SBSA_GWDT_WOR);  in sbsa_gwdt_reg_write()
156 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);  in sbsa_gwdt_set_timeout()  local
162 		sbsa_gwdt_reg_write((u64)gwdt->clk * timeout, gwdt);  in sbsa_gwdt_set_timeout()
169 		sbsa_gwdt_reg_write(((u64)gwdt->clk / 2) * timeout, gwdt);  in sbsa_gwdt_set_timeout()
193 	if (gwdt->need_ws0_race_workaround)  in sbsa_gwdt_set_timeout()
201 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);  in sbsa_gwdt_get_timeleft()  local
210 	    !(readl(gwdt->control_base + SBSA_GWDT_WCS) & SBSA_GWDT_WCS_WS0))  in sbsa_gwdt_get_timeleft()
211 		timeleft += sbsa_gwdt_reg_read(gwdt);  in sbsa_gwdt_get_timeleft()
213 	timeleft += lo_hi_readq(gwdt->control_base + SBSA_GWDT_WCV) -  in sbsa_gwdt_get_timeleft()
216 	do_div(timeleft, gwdt->clk);  in sbsa_gwdt_get_timeleft()
223 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);  in sbsa_gwdt_keepalive()  local
229 	writel(0, gwdt->refresh_base + SBSA_GWDT_WRR);  in sbsa_gwdt_keepalive()
236 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);  in sbsa_gwdt_get_version()  local
239 	iidr = readl(gwdt->control_base + SBSA_GWDT_W_IIDR);  in sbsa_gwdt_get_version()
243 	gwdt->version = ver;  in sbsa_gwdt_get_version()
244 	gwdt->need_ws0_race_workaround =  in sbsa_gwdt_get_version()
250 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);  in sbsa_gwdt_start()  local
253 	writel(SBSA_GWDT_WCS_EN, gwdt->control_base + SBSA_GWDT_WCS);  in sbsa_gwdt_start()
260 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);  in sbsa_gwdt_stop()  local
263 	writel(0, gwdt->control_base + SBSA_GWDT_WCS);  in sbsa_gwdt_stop()
297 	struct sbsa_gwdt *gwdt;  in sbsa_gwdt_probe()  local
301 	gwdt = devm_kzalloc(dev, sizeof(*gwdt), GFP_KERNEL);  in sbsa_gwdt_probe()
302 	if (!gwdt)  in sbsa_gwdt_probe()
304 	platform_set_drvdata(pdev, gwdt);  in sbsa_gwdt_probe()
319 	gwdt->clk = arch_timer_get_cntfrq();  in sbsa_gwdt_probe()
320 	gwdt->refresh_base = rf_base;  in sbsa_gwdt_probe()
321 	gwdt->control_base = cf_base;  in sbsa_gwdt_probe()
323 	wdd = &gwdt->wdd;  in sbsa_gwdt_probe()
329 	watchdog_set_drvdata(wdd, gwdt);  in sbsa_gwdt_probe()
332 	if (gwdt->version == 0)  in sbsa_gwdt_probe()
333 		wdd->max_hw_heartbeat_ms = U32_MAX / gwdt->clk * 1000;  in sbsa_gwdt_probe()
335 		wdd->max_hw_heartbeat_ms = GENMASK_ULL(47, 0) / gwdt->clk * 1000;  in sbsa_gwdt_probe()
337 	if (gwdt->need_ws0_race_workaround) {  in sbsa_gwdt_probe()
366 					     pdev->name, gwdt)) {  in sbsa_gwdt_probe()
396 		 wdd->timeout, gwdt->clk, action,  in sbsa_gwdt_probe()
405 	struct sbsa_gwdt *gwdt = dev_get_drvdata(dev);  in sbsa_gwdt_suspend()  local
407 	if (watchdog_hw_running(&gwdt->wdd))  in sbsa_gwdt_suspend()
408 		sbsa_gwdt_stop(&gwdt->wdd);  in sbsa_gwdt_suspend()
416 	struct sbsa_gwdt *gwdt = dev_get_drvdata(dev);  in sbsa_gwdt_resume()  local
418 	if (watchdog_hw_running(&gwdt->wdd))  in sbsa_gwdt_resume()
419 		sbsa_gwdt_start(&gwdt->wdd);  in sbsa_gwdt_resume()