53 	struct xwdt_device *xdev = watchdog_get_drvdata(wdd);  in xilinx_wdt_start()  local
55 	spin_lock(&xdev->spinlock);  in xilinx_wdt_start()
58 	control_status_reg = ioread32(xdev->base + XWT_TWCSR0_OFFSET);  in xilinx_wdt_start()
62 		  xdev->base + XWT_TWCSR0_OFFSET);  in xilinx_wdt_start()
64 	iowrite32(XWT_CSRX_EWDT2_MASK, xdev->base + XWT_TWCSR1_OFFSET);  in xilinx_wdt_start()
66 	spin_unlock(&xdev->spinlock);  in xilinx_wdt_start()
74 	struct xwdt_device *xdev = watchdog_get_drvdata(wdd);  in xilinx_wdt_stop()  local
76 	spin_lock(&xdev->spinlock);  in xilinx_wdt_stop()
78 	control_status_reg = ioread32(xdev->base + XWT_TWCSR0_OFFSET);  in xilinx_wdt_stop()
81 		  xdev->base + XWT_TWCSR0_OFFSET);  in xilinx_wdt_stop()
83 	iowrite32(0, xdev->base + XWT_TWCSR1_OFFSET);  in xilinx_wdt_stop()
85 	spin_unlock(&xdev->spinlock);  in xilinx_wdt_stop()
94 	struct xwdt_device *xdev = watchdog_get_drvdata(wdd);  in xilinx_wdt_keepalive()  local
96 	spin_lock(&xdev->spinlock);  in xilinx_wdt_keepalive()
98 	control_status_reg = ioread32(xdev->base + XWT_TWCSR0_OFFSET);  in xilinx_wdt_keepalive()
100 	iowrite32(control_status_reg, xdev->base + XWT_TWCSR0_OFFSET);  in xilinx_wdt_keepalive()
102 	spin_unlock(&xdev->spinlock);  in xilinx_wdt_keepalive()
121 static u32 xwdt_selftest(struct xwdt_device *xdev)  in xwdt_selftest()  argument
127 	spin_lock(&xdev->spinlock);  in xwdt_selftest()
129 	timer_value1 = ioread32(xdev->base + XWT_TBR_OFFSET);  in xwdt_selftest()
130 	timer_value2 = ioread32(xdev->base + XWT_TBR_OFFSET);  in xwdt_selftest()
135 		timer_value2 = ioread32(xdev->base + XWT_TBR_OFFSET);  in xwdt_selftest()
138 	spin_unlock(&xdev->spinlock);  in xwdt_selftest()
151 	struct xwdt_device *xdev;  in xwdt_probe()  local
154 	xdev = devm_kzalloc(&pdev->dev, sizeof(*xdev), GFP_KERNEL);  in xwdt_probe()
155 	if (!xdev)  in xwdt_probe()
158 	xilinx_wdt_wdd = &xdev->xilinx_wdt_wdd;  in xwdt_probe()
164 	xdev->base = devm_ioremap_resource(&pdev->dev, res);  in xwdt_probe()
165 	if (IS_ERR(xdev->base))  in xwdt_probe()
166 		return PTR_ERR(xdev->base);  in xwdt_probe()
174 				  &xdev->wdt_interval);  in xwdt_probe()
191 	if (pfreq && xdev->wdt_interval)  in xwdt_probe()
192 		xilinx_wdt_wdd->timeout = 2 * ((1 << xdev->wdt_interval) /  in xwdt_probe()
195 	spin_lock_init(&xdev->spinlock);  in xwdt_probe()
196 	watchdog_set_drvdata(xilinx_wdt_wdd, xdev);  in xwdt_probe()
198 	rc = xwdt_selftest(xdev);  in xwdt_probe()
211 		 xdev->base, xilinx_wdt_wdd->timeout);  in xwdt_probe()
213 	platform_set_drvdata(pdev, xdev);  in xwdt_probe()
220 	struct xwdt_device *xdev = platform_get_drvdata(pdev);  in xwdt_remove()  local
222 	watchdog_unregister_device(&xdev->xilinx_wdt_wdd);  in xwdt_remove()