add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/spi/spi-sh-hspi.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0
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 /*
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  * SuperH HSPI bus driver
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  *
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@@ -7,15 +8,6 @@
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  * Based on pxa2xx_spi.c:
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  * Copyright (C) 2011 Renesas Solutions Corp.
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  * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; version 2 of the License.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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12
 
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 #include <linux/clk.h>
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@@ -43,7 +35,7 @@
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 struct hspi_priv {
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 	void __iomem *addr;
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-	struct spi_master *master;
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+	struct spi_controller *ctlr;
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 	struct device *dev;
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 	struct clk *clk;
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 };
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@@ -148,10 +140,10 @@
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 	hspi_write(hspi, SPSCR, 0x21);	/* master mode / CS control */
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 }
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-static int hspi_transfer_one_message(struct spi_master *master,
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+static int hspi_transfer_one_message(struct spi_controller *ctlr,
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 				     struct spi_message *msg)
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 {
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-	struct hspi_priv *hspi = spi_master_get_devdata(master);
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+	struct hspi_priv *hspi = spi_controller_get_devdata(ctlr);
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 	struct spi_transfer *t;
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 	u32 tx;
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 	u32 rx;
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@@ -198,8 +190,7 @@
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 		msg->actual_length += t->len;
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-		if (t->delay_usecs)
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-			udelay(t->delay_usecs);
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+		spi_transfer_delay_exec(t);
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 		if (cs_change) {
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 			ndelay(nsecs);
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@@ -213,7 +204,7 @@
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 		ndelay(nsecs);
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 		hspi_hw_cs_disable(hspi);
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 	}
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-	spi_finalize_current_message(master);
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+	spi_finalize_current_message(ctlr);
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 	return ret;
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 }
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@@ -221,7 +212,7 @@
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 static int hspi_probe(struct platform_device *pdev)
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 {
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 	struct resource *res;
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-	struct spi_master *master;
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+	struct spi_controller *ctlr;
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 	struct hspi_priv *hspi;
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 	struct clk *clk;
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 	int ret;
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@@ -233,11 +224,9 @@
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 		return -EINVAL;
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 	}
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-	master = spi_alloc_master(&pdev->dev, sizeof(*hspi));
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-	if (!master) {
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-		dev_err(&pdev->dev, "spi_alloc_master error.\n");
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+	ctlr = spi_alloc_master(&pdev->dev, sizeof(*hspi));
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+	if (!ctlr)
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 		return -ENOMEM;
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-	}
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 	clk = clk_get(&pdev->dev, NULL);
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 	if (IS_ERR(clk)) {
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@@ -246,33 +235,32 @@
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 		goto error0;
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 	}
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-	hspi = spi_master_get_devdata(master);
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+	hspi = spi_controller_get_devdata(ctlr);
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 	platform_set_drvdata(pdev, hspi);
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 	/* init hspi */
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-	hspi->master	= master;
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+	hspi->ctlr	= ctlr;
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 	hspi->dev	= &pdev->dev;
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 	hspi->clk	= clk;
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 	hspi->addr	= devm_ioremap(hspi->dev,
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 				       res->start, resource_size(res));
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 	if (!hspi->addr) {
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-		dev_err(&pdev->dev, "ioremap error.\n");
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 		ret = -ENOMEM;
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 		goto error1;
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 	}
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 	pm_runtime_enable(&pdev->dev);
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-	master->bus_num		= pdev->id;
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-	master->mode_bits	= SPI_CPOL | SPI_CPHA;
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-	master->dev.of_node	= pdev->dev.of_node;
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-	master->auto_runtime_pm = true;
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-	master->transfer_one_message		= hspi_transfer_one_message;
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-	master->bits_per_word_mask = SPI_BPW_MASK(8);
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+	ctlr->bus_num = pdev->id;
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+	ctlr->mode_bits	= SPI_CPOL | SPI_CPHA;
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+	ctlr->dev.of_node = pdev->dev.of_node;
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+	ctlr->auto_runtime_pm = true;
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+	ctlr->transfer_one_message = hspi_transfer_one_message;
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+	ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
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-	ret = devm_spi_register_master(&pdev->dev, master);
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+	ret = devm_spi_register_controller(&pdev->dev, ctlr);
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 	if (ret < 0) {
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-		dev_err(&pdev->dev, "spi_register_master error.\n");
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+		dev_err(&pdev->dev, "devm_spi_register_controller error.\n");
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 		goto error2;
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 	}
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@@ -283,7 +271,7 @@
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  error1:
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 	clk_put(clk);
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  error0:
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-	spi_master_put(master);
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+	spi_controller_put(ctlr);
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 	return ret;
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 }
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@@ -316,6 +304,6 @@
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 module_platform_driver(hspi_driver);
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 MODULE_DESCRIPTION("SuperH HSPI bus driver");
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-MODULE_LICENSE("GPL");
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+MODULE_LICENSE("GPL v2");
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 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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 MODULE_ALIAS("platform:sh-hspi");