static int __init
ltq_wdt_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct clk *clk;
if (!res) {
dev_err(&pdev->dev, "cannot obtain I/O memory region");
return -ENOENT;
}
res = devm_request_mem_region(&pdev->dev, res->start,
resource_size(res), dev_name(&pdev->dev));
if (!res) {
dev_err(&pdev->dev, "cannot request I/O memory region");
return -EBUSY;
}
ltq_wdt_membase = devm_ioremap_nocache(&pdev->dev, res->start,
resource_size(res));
if (!ltq_wdt_membase) {
dev_err(&pdev->dev, "cannot remap I/O memory region\n");
return -ENOMEM;
}
/* we do not need to enable the clock as it is always running */
clk = clk_get(&pdev->dev, "io");
WARN_ON(!clk);
ltq_io_region_clk_rate = clk_get_rate(clk);
clk_put(clk);
if (ltq_reset_cause() == LTQ_RST_CAUSE_WDTRST)
ltq_wdt_bootstatus = WDIOF_CARDRESET;
return misc_register(<q_wdt_miscdev);
}
static int
ltq_wdt_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct clk *clk;
ltq_wdt_membase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(ltq_wdt_membase))
return PTR_ERR(ltq_wdt_membase);
/* we do not need to enable the clock as it is always running */
clk = clk_get_io();
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Failed to get clock\n");
return -ENOENT;
}
ltq_io_region_clk_rate = clk_get_rate(clk);
clk_put(clk);
/* find out if the watchdog caused the last reboot */
if (ltq_reset_cause() == LTQ_RST_CAUSE_WDTRST)
ltq_wdt_bootstatus = WDIOF_CARDRESET;
dev_info(&pdev->dev, "Init done\n");
return misc_register(<q_wdt_miscdev);
}
