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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/ata/pata_falcon.c
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@@ -33,7 +33,6 @@
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 #define DRV_NAME "pata_falcon"
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 #define DRV_VERSION "0.1.0"
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-#define ATA_HD_BASE	0xfff00000
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 #define ATA_HD_CONTROL	0x39
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 static struct scsi_host_template pata_falcon_sht = {
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@@ -120,24 +119,22 @@
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 	.set_mode	= pata_falcon_set_mode,
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 };
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-static int pata_falcon_init_one(void)
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+static int __init pata_falcon_init_one(struct platform_device *pdev)
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 {
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+	struct resource *res;
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 	struct ata_host *host;
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 	struct ata_port *ap;
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-	struct platform_device *pdev;
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 	void __iomem *base;
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-	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
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+	dev_info(&pdev->dev, "Atari Falcon PATA controller\n");
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+
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+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+	if (!res)
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 		return -ENODEV;
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-	pr_info(DRV_NAME ": Atari Falcon PATA controller\n");
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-
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-	pdev = platform_device_register_simple(DRV_NAME, 0, NULL, 0);
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-	if (IS_ERR(pdev))
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-		return PTR_ERR(pdev);
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-
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-	if (!devm_request_mem_region(&pdev->dev, ATA_HD_BASE, 0x40, DRV_NAME)) {
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-		pr_err(DRV_NAME ": resources busy\n");
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+	if (!devm_request_mem_region(&pdev->dev, res->start,
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+				     resource_size(res), DRV_NAME)) {
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+		dev_err(&pdev->dev, "resources busy\n");
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 		return -EBUSY;
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 	}
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@@ -152,7 +149,7 @@
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 	ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY;
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 	ap->flags |= ATA_FLAG_PIO_POLLING;
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-	base = (void __iomem *)ATA_HD_BASE;
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+	base = (void __iomem *)res->start;
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 	ap->ioaddr.data_addr		= base;
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 	ap->ioaddr.error_addr		= base + 1 + 1 * 4;
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 	ap->ioaddr.feature_addr		= base + 1 + 1 * 4;
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@@ -174,9 +171,26 @@
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 	return ata_host_activate(host, 0, NULL, 0, &pata_falcon_sht);
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 }
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-module_init(pata_falcon_init_one);
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+static int __exit pata_falcon_remove_one(struct platform_device *pdev)
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+{
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+	struct ata_host *host = platform_get_drvdata(pdev);
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+
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+	ata_host_detach(host);
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+
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+	return 0;
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+}
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+
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+static struct platform_driver pata_falcon_driver = {
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+	.remove = __exit_p(pata_falcon_remove_one),
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+	.driver   = {
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+		.name	= "atari-falcon-ide",
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+	},
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+};
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+
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+module_platform_driver_probe(pata_falcon_driver, pata_falcon_init_one);
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 MODULE_AUTHOR("Bartlomiej Zolnierkiewicz");
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 MODULE_DESCRIPTION("low-level driver for Atari Falcon PATA");
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 MODULE_LICENSE("GPL v2");
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+MODULE_ALIAS("platform:atari-falcon-ide");
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 MODULE_VERSION(DRV_VERSION);