add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/watchdog/imgpdc_wdt.c
..
..
@@ -1,11 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Imagination Technologies PowerDown Controller Watchdog Timer.
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  *
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  * Copyright (c) 2014 Imagination Technologies Ltd.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published by
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- * the Free Software Foundation.
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6
  *
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7
  * Based on drivers/watchdog/sunxi_wdt.c Copyright (c) 2013 Carlo Caione
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8
  *                                                     2012 Henrik Nordstrom
..
..
@@ -178,59 +175,69 @@
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 	.restart        = pdc_wdt_restart,
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 };
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177
 
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+static void pdc_clk_disable_unprepare(void *data)
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+{
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+	clk_disable_unprepare(data);
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+}
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+
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 static int pdc_wdt_probe(struct platform_device *pdev)
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 {
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+	struct device *dev = &pdev->dev;
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 	u64 div;
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 	int ret, val;
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 	unsigned long clk_rate;
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-	struct resource *res;
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 	struct pdc_wdt_dev *pdc_wdt;
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190
 
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-	pdc_wdt = devm_kzalloc(&pdev->dev, sizeof(*pdc_wdt), GFP_KERNEL);
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+	pdc_wdt = devm_kzalloc(dev, sizeof(*pdc_wdt), GFP_KERNEL);
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 	if (!pdc_wdt)
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 		return -ENOMEM;
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194
 
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	pdc_wdt->base = devm_ioremap_resource(&pdev->dev, res);
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+	pdc_wdt->base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(pdc_wdt->base))
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 		return PTR_ERR(pdc_wdt->base);
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-	pdc_wdt->sys_clk = devm_clk_get(&pdev->dev, "sys");
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+	pdc_wdt->sys_clk = devm_clk_get(dev, "sys");
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 	if (IS_ERR(pdc_wdt->sys_clk)) {
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-		dev_err(&pdev->dev, "failed to get the sys clock\n");
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+		dev_err(dev, "failed to get the sys clock\n");
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 		return PTR_ERR(pdc_wdt->sys_clk);
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 	}
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204
 
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-	pdc_wdt->wdt_clk = devm_clk_get(&pdev->dev, "wdt");
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+	pdc_wdt->wdt_clk = devm_clk_get(dev, "wdt");
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 	if (IS_ERR(pdc_wdt->wdt_clk)) {
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-		dev_err(&pdev->dev, "failed to get the wdt clock\n");
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+		dev_err(dev, "failed to get the wdt clock\n");
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 		return PTR_ERR(pdc_wdt->wdt_clk);
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 	}
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210
 
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 	ret = clk_prepare_enable(pdc_wdt->sys_clk);
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 	if (ret) {
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-		dev_err(&pdev->dev, "could not prepare or enable sys clock\n");
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+		dev_err(dev, "could not prepare or enable sys clock\n");
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 		return ret;
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 	}
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+	ret = devm_add_action_or_reset(dev, pdc_clk_disable_unprepare,
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+				       pdc_wdt->sys_clk);
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+	if (ret)
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+		return ret;
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220
 
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 	ret = clk_prepare_enable(pdc_wdt->wdt_clk);
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 	if (ret) {
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-		dev_err(&pdev->dev, "could not prepare or enable wdt clock\n");
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-		goto disable_sys_clk;
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+		dev_err(dev, "could not prepare or enable wdt clock\n");
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+		return ret;
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 	}
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+	ret = devm_add_action_or_reset(dev, pdc_clk_disable_unprepare,
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+				       pdc_wdt->wdt_clk);
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+	if (ret)
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+		return ret;
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230
 
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 	/* We use the clock rate to calculate the max timeout */
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 	clk_rate = clk_get_rate(pdc_wdt->wdt_clk);
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 	if (clk_rate == 0) {
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-		dev_err(&pdev->dev, "failed to get clock rate\n");
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-		ret = -EINVAL;
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-		goto disable_wdt_clk;
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+		dev_err(dev, "failed to get clock rate\n");
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+		return -EINVAL;
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236
 	}
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237
 
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 	if (order_base_2(clk_rate) > PDC_WDT_CONFIG_DELAY_MASK + 1) {
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-		dev_err(&pdev->dev, "invalid clock rate\n");
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-		ret = -EINVAL;
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-		goto disable_wdt_clk;
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+		dev_err(dev, "invalid clock rate\n");
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+		return -EINVAL;
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 	}
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242
 
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 	if (order_base_2(clk_rate) == 0)
..
..
@@ -245,10 +252,10 @@
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 	do_div(div, clk_rate);
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 	pdc_wdt->wdt_dev.max_timeout = div;
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 	pdc_wdt->wdt_dev.timeout = PDC_WDT_DEF_TIMEOUT;
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-	pdc_wdt->wdt_dev.parent = &pdev->dev;
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+	pdc_wdt->wdt_dev.parent = dev;
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 	watchdog_set_drvdata(&pdc_wdt->wdt_dev, pdc_wdt);
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257
 
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-	watchdog_init_timeout(&pdc_wdt->wdt_dev, heartbeat, &pdev->dev);
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+	watchdog_init_timeout(&pdc_wdt->wdt_dev, heartbeat, dev);
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259
 
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 	pdc_wdt_stop(&pdc_wdt->wdt_dev);
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261
 
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@@ -259,24 +266,22 @@
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 	case PDC_WDT_TICKLE_STATUS_TICKLE:
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 	case PDC_WDT_TICKLE_STATUS_TIMEOUT:
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 		pdc_wdt->wdt_dev.bootstatus |= WDIOF_CARDRESET;
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-		dev_info(&pdev->dev,
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-			 "watchdog module last reset due to timeout\n");
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+		dev_info(dev, "watchdog module last reset due to timeout\n");
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 		break;
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 	case PDC_WDT_TICKLE_STATUS_HRESET:
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-		dev_info(&pdev->dev,
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+		dev_info(dev,
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 			 "watchdog module last reset due to hard reset\n");
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 		break;
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 	case PDC_WDT_TICKLE_STATUS_SRESET:
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-		dev_info(&pdev->dev,
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+		dev_info(dev,
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 			 "watchdog module last reset due to soft reset\n");
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 		break;
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 	case PDC_WDT_TICKLE_STATUS_USER:
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-		dev_info(&pdev->dev,
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+		dev_info(dev,
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 			 "watchdog module last reset due to user reset\n");
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 		break;
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 	default:
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-		dev_info(&pdev->dev,
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-			 "contains an illegal status code (%08x)\n", val);
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+		dev_info(dev, "contains an illegal status code (%08x)\n", val);
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 		break;
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 	}
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287
 
..
..
@@ -285,36 +290,9 @@
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290
 
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 	platform_set_drvdata(pdev, pdc_wdt);
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292
 
288
-	ret = watchdog_register_device(&pdc_wdt->wdt_dev);
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-	if (ret)
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-		goto disable_wdt_clk;
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-
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-	return 0;
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-
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-disable_wdt_clk:
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-	clk_disable_unprepare(pdc_wdt->wdt_clk);
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-disable_sys_clk:
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-	clk_disable_unprepare(pdc_wdt->sys_clk);
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-	return ret;
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-}
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-
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-static void pdc_wdt_shutdown(struct platform_device *pdev)
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-{
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-	struct pdc_wdt_dev *pdc_wdt = platform_get_drvdata(pdev);
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-
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-	pdc_wdt_stop(&pdc_wdt->wdt_dev);
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-}
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-
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-static int pdc_wdt_remove(struct platform_device *pdev)
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-{
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-	struct pdc_wdt_dev *pdc_wdt = platform_get_drvdata(pdev);
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-
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-	pdc_wdt_stop(&pdc_wdt->wdt_dev);
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-	watchdog_unregister_device(&pdc_wdt->wdt_dev);
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-	clk_disable_unprepare(pdc_wdt->wdt_clk);
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-	clk_disable_unprepare(pdc_wdt->sys_clk);
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-
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-	return 0;
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+	watchdog_stop_on_reboot(&pdc_wdt->wdt_dev);
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+	watchdog_stop_on_unregister(&pdc_wdt->wdt_dev);
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+	return devm_watchdog_register_device(dev, &pdc_wdt->wdt_dev);
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 }
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297
 
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 static const struct of_device_id pdc_wdt_match[] = {
..
..
@@ -329,8 +307,6 @@
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 		.of_match_table	= pdc_wdt_match,
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 	},
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 	.probe = pdc_wdt_probe,
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-	.remove = pdc_wdt_remove,
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-	.shutdown = pdc_wdt_shutdown,
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 };
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 module_platform_driver(pdc_wdt_driver);
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