68 	struct xwwdt_device *xdev = watchdog_get_drvdata(wdd);  in xilinx_wwdt_start()  local
69 	struct watchdog_device *xilinx_wwdt_wdd = &xdev->xilinx_wwdt_wdd;  in xilinx_wwdt_start()
74 	time_out = xdev->freq * wdd->timeout;  in xilinx_wwdt_start()
75 	closed_timeout = div_u64(time_out * xdev->close_percent, 100);  in xilinx_wwdt_start()
77 	wdd->min_hw_heartbeat_ms = xdev->close_percent * 10 * wdd->timeout;  in xilinx_wwdt_start()
79 	spin_lock(&xdev->spinlock);  in xilinx_wwdt_start()
81 	iowrite32(XWWDT_MWR_MASK, xdev->base + XWWDT_MWR_OFFSET);  in xilinx_wwdt_start()
82 	iowrite32(~(u32)XWWDT_ESR_WEN_MASK, xdev->base + XWWDT_ESR_OFFSET);  in xilinx_wwdt_start()
83 	iowrite32((u32)closed_timeout, xdev->base + XWWDT_FWR_OFFSET);  in xilinx_wwdt_start()
84 	iowrite32((u32)open_timeout, xdev->base + XWWDT_SWR_OFFSET);  in xilinx_wwdt_start()
87 	control_status_reg = ioread32(xdev->base + XWWDT_ESR_OFFSET);  in xilinx_wwdt_start()
89 	iowrite32(control_status_reg, xdev->base + XWWDT_ESR_OFFSET);  in xilinx_wwdt_start()
91 	spin_unlock(&xdev->spinlock);  in xilinx_wwdt_start()
100 	struct xwwdt_device *xdev = watchdog_get_drvdata(wdd);  in xilinx_wwdt_keepalive()  local
103 	spin_lock(&xdev->spinlock);  in xilinx_wwdt_keepalive()
106 	iowrite32(XWWDT_MWR_MASK, xdev->base + XWWDT_MWR_OFFSET);  in xilinx_wwdt_keepalive()
109 	control_status_reg = ioread32(xdev->base + XWWDT_ESR_OFFSET);  in xilinx_wwdt_keepalive()
111 	iowrite32(control_status_reg, xdev->base + XWWDT_ESR_OFFSET);  in xilinx_wwdt_keepalive()
113 	spin_unlock(&xdev->spinlock);  in xilinx_wwdt_keepalive()
135 	struct xwwdt_device *xdev;  in xwwdt_probe()  local
139 	xdev = devm_kzalloc(dev, sizeof(*xdev), GFP_KERNEL);  in xwwdt_probe()
140 	if (!xdev)  in xwwdt_probe()
143 	xilinx_wwdt_wdd = &xdev->xilinx_wwdt_wdd;  in xwwdt_probe()
148 	xdev->base = devm_platform_ioremap_resource(pdev, 0);  in xwwdt_probe()
149 	if (IS_ERR(xdev->base))  in xwwdt_probe()
150 		return PTR_ERR(xdev->base);  in xwwdt_probe()
156 	xdev->freq = clk_get_rate(clk);  in xwwdt_probe()
157 	if (!xdev->freq)  in xwwdt_probe()
165 		xdev->close_percent = XWWDT_CLOSE_WINDOW_PERCENT;  in xwwdt_probe()
167 		xdev->close_percent = closed_window_percent;  in xwwdt_probe()
170 	spin_lock_init(&xdev->spinlock);  in xwwdt_probe()
171 	watchdog_set_drvdata(xilinx_wwdt_wdd, xdev);  in xwwdt_probe()