rtl88x2CE_WiFi_linux driver

hc

2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8

 kernel/drivers/mfd/atmel-hlcdc.c
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@@ -1,20 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2014 Free Electrons
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  * Copyright (C) 2014 Atmel
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  *
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  * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
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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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- *
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- * This program is distributed in the hope that it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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8
 
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 #include <linux/clk.h>
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@@ -30,6 +19,7 @@
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19
 
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 struct atmel_hlcdc_regmap {
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 	void __iomem *regs;
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+	struct device *dev;
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 };
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 static const struct mfd_cell atmel_hlcdc_cells[] = {
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@@ -50,10 +40,17 @@
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 	if (reg <= ATMEL_HLCDC_DIS) {
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 		u32 status;
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+		int ret;
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-		readl_poll_timeout_atomic(hregmap->regs + ATMEL_HLCDC_SR,
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-					  status, !(status & ATMEL_HLCDC_SIP),
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-					  1, 100);
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+		ret = readl_poll_timeout_atomic(hregmap->regs + ATMEL_HLCDC_SR,
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+						status,
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+						!(status & ATMEL_HLCDC_SIP),
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+						1, 100);
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+		if (ret) {
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+			dev_err(hregmap->dev,
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+				"Timeout! Clock domain synchronization is in progress!\n");
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+			return ret;
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+		}
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 	}
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 	writel(val, hregmap->regs + reg);
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@@ -101,6 +98,8 @@
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 	if (IS_ERR(hregmap->regs))
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 		return PTR_ERR(hregmap->regs);
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+	hregmap->dev = &pdev->dev;
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+
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 	hlcdc->irq = platform_get_irq(pdev, 0);
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 	if (hlcdc->irq < 0)
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 		return hlcdc->irq;
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@@ -141,6 +140,7 @@
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 	{ .compatible = "atmel,sama5d2-hlcdc" },
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 	{ .compatible = "atmel,sama5d3-hlcdc" },
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 	{ .compatible = "atmel,sama5d4-hlcdc" },
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+	{ .compatible = "microchip,sam9x60-hlcdc" },
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 	{ /* sentinel */ },
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 };
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 MODULE_DEVICE_TABLE(of, atmel_hlcdc_match);