add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/ide/macide.c
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@@ -18,10 +18,11 @@
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 #include <linux/delay.h>
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 #include <linux/ide.h>
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 #include <linux/module.h>
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+#include <linux/platform_device.h>
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 #include <asm/macintosh.h>
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-#include <asm/macints.h>
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-#include <asm/mac_baboon.h>
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+
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+#define DRV_NAME "mac_ide"
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 #define IDE_BASE 0x50F1A000	/* Base address of IDE controller */
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..
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@@ -100,42 +101,61 @@
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  * Probe for a Macintosh IDE interface
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  */
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-static int __init macide_init(void)
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+static int mac_ide_probe(struct platform_device *pdev)
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 {
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-	unsigned long base;
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-	int irq;
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+	struct resource *mem, *irq;
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 	struct ide_hw hw, *hws[] = { &hw };
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 	struct ide_port_info d = macide_port_info;
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+	struct ide_host *host;
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+	int rc;
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 	if (!MACH_IS_MAC)
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 		return -ENODEV;
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-	switch (macintosh_config->ide_type) {
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-	case MAC_IDE_QUADRA:
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-		base = IDE_BASE;
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-		irq = IRQ_NUBUS_F;
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-		break;
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-	case MAC_IDE_PB:
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-		base = IDE_BASE;
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-		irq = IRQ_NUBUS_C;
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-		break;
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-	case MAC_IDE_BABOON:
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-		base = BABOON_BASE;
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-		d.port_ops = NULL;
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-		irq = IRQ_BABOON_1;
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-		break;
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-	default:
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+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+	if (!mem)
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 		return -ENODEV;
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+
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+	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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+	if (!irq)
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+		return -ENODEV;
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+
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+	if (!devm_request_mem_region(&pdev->dev, mem->start,
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+				     resource_size(mem), 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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 	printk(KERN_INFO "ide: Macintosh %s IDE controller\n",
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 			 mac_ide_name[macintosh_config->ide_type - 1]);
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-	macide_setup_ports(&hw, base, irq);
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+	macide_setup_ports(&hw, mem->start, irq->start);
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-	return ide_host_add(&d, hws, 1, NULL);
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+	rc = ide_host_add(&d, hws, 1, &host);
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+	if (rc)
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+		return rc;
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+
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+	platform_set_drvdata(pdev, host);
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+	return 0;
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 }
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-module_init(macide_init);
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+static int mac_ide_remove(struct platform_device *pdev)
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+{
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+	struct ide_host *host = platform_get_drvdata(pdev);
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+	ide_host_remove(host);
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+	return 0;
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+}
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+
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+static struct platform_driver mac_ide_driver = {
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+	.driver = {
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+		.name = DRV_NAME,
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+	},
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+	.probe  = mac_ide_probe,
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+	.remove = mac_ide_remove,
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+};
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+
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+module_platform_driver(mac_ide_driver);
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+
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+MODULE_ALIAS("platform:" DRV_NAME);
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 MODULE_LICENSE("GPL");