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From: Michael Schmitz <schmitzmic@gmail.com>
To: linux-m68k@vger.kernel.org, linux-ide@vger.kernel.org
Cc: geert@linux-m68k.org, b.zolnierkie@samsung.com,
	Michael Schmitz <schmitzmic@gmail.com>
Subject: [PATCH RESEND v2 2/2] drivers/ata: convert pata_falcon to arch platform device
Date: Thu, 26 Sep 2019 15:54:24 +1200
Message-ID: <1569470064-3977-3-git-send-email-schmitzmic@gmail.com> (raw)
In-Reply-To: <1569470064-3977-1-git-send-email-schmitzmic@gmail.com>

The Atari platform device setup now provides a platform device
for the Falcon IDE interface. Use this in place of the simple platform
device set up in the old pata_falcon probe code.

Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>

--

Changes from v1

- drop obsolete ATA_HD_BASE define
- use dev_err() to report error obtaining platform resource
---
 drivers/ata/pata_falcon.c |   42 ++++++++++++++++++++++++++++--------------
 1 files changed, 28 insertions(+), 14 deletions(-)

diff --git a/drivers/ata/pata_falcon.c b/drivers/ata/pata_falcon.c
index 41e0d6a..0e6c6b6 100644
--- a/drivers/ata/pata_falcon.c
+++ b/drivers/ata/pata_falcon.c
@@ -33,7 +33,6 @@
 #define DRV_NAME "pata_falcon"
 #define DRV_VERSION "0.1.0"
 
-#define ATA_HD_BASE	0xfff00000
 #define ATA_HD_CONTROL	0x39
 
 static struct scsi_host_template pata_falcon_sht = {
@@ -120,24 +119,22 @@ static int pata_falcon_set_mode(struct ata_link *link,
 	.set_mode	= pata_falcon_set_mode,
 };
 
-static int pata_falcon_init_one(void)
+static int __init pata_falcon_init_one(struct platform_device *pdev)
 {
+	struct resource *res;
 	struct ata_host *host;
 	struct ata_port *ap;
-	struct platform_device *pdev;
 	void __iomem *base;
 
-	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
-		return -ENODEV;
-
-	pr_info(DRV_NAME ": Atari Falcon PATA controller\n");
+	dev_info(&pdev->dev, ": Atari Falcon PATA controller\n");
 
-	pdev = platform_device_register_simple(DRV_NAME, 0, NULL, 0);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
 
-	if (!devm_request_mem_region(&pdev->dev, ATA_HD_BASE, 0x40, DRV_NAME)) {
-		pr_err(DRV_NAME ": resources busy\n");
+	if (!devm_request_mem_region(&pdev->dev, res->start,
+				     resource_size(res), DRV_NAME)) {
+		dev_err(&pdev->dev, "resources busy\n");
 		return -EBUSY;
 	}
 
@@ -152,7 +149,7 @@ static int pata_falcon_init_one(void)
 	ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY;
 	ap->flags |= ATA_FLAG_PIO_POLLING;
 
-	base = (void __iomem *)ATA_HD_BASE;
+	base = (void __iomem *)res->start;
 	ap->ioaddr.data_addr		= base;
 	ap->ioaddr.error_addr		= base + 1 + 1 * 4;
 	ap->ioaddr.feature_addr		= base + 1 + 1 * 4;
@@ -174,9 +171,26 @@ static int pata_falcon_init_one(void)
 	return ata_host_activate(host, 0, NULL, 0, &pata_falcon_sht);
 }
 
-module_init(pata_falcon_init_one);
+static int __exit pata_falcon_remove_one(struct platform_device *pdev)
+{
+	struct ata_host *host = platform_get_drvdata(pdev);
+
+	ata_host_detach(host);
+
+	return 0;
+}
+
+static struct platform_driver pata_falcon_driver = {
+	.remove = __exit_p(pata_falcon_remove_one),
+	.driver   = {
+		.name	= "atari-falcon-ide",
+	},
+};
+
+module_platform_driver_probe(pata_falcon_driver, pata_falcon_init_one);
 
 MODULE_AUTHOR("Bartlomiej Zolnierkiewicz");
 MODULE_DESCRIPTION("low-level driver for Atari Falcon PATA");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:atari-falcon-ide");
 MODULE_VERSION(DRV_VERSION);
-- 
1.7.0.4


  parent reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-26  3:54 [PATCH RESEND v2 0/2] Convert Atari Falcon IDE driver to " Michael Schmitz
2019-09-26  3:54 ` [PATCH RESEND v2 1/2] m68k/atari: add platform device for Falcon IDE port Michael Schmitz
2019-11-04 10:56   ` Geert Uytterhoeven
2019-11-04 21:09     ` Michael Schmitz
2019-11-05  6:37       ` [PATCH] ide: falconide: convert to platform driver Michael Schmitz
2019-11-05  8:11         ` Geert Uytterhoeven
2019-11-05 18:31           ` Michael Schmitz
2019-11-05 18:46             ` Geert Uytterhoeven
2019-11-05 20:02               ` Michael Schmitz
2019-11-05 21:13                 ` Michael Schmitz
2019-11-05 21:43                   ` Geert Uytterhoeven
2019-11-06  1:35                     ` Michael Schmitz
2019-11-05  6:43       ` [PATCH RESEND v2 1/2] m68k/atari: add platform device for Falcon IDE port Michael Schmitz
2019-09-26  3:54 ` Michael Schmitz [this message]
2019-11-04 10:58   ` [PATCH RESEND v2 2/2] drivers/ata: convert pata_falcon to arch platform device Geert Uytterhoeven
2019-10-25 20:33 ` [PATCH RESEND v2 0/2] Convert Atari Falcon IDE driver to " Jens Axboe
2019-10-26 18:17   ` Geert Uytterhoeven
2019-10-28  7:03     ` Michael Schmitz
2019-11-04 11:04       ` Geert Uytterhoeven
2019-11-04 19:17         ` Michael Schmitz
2019-11-04 20:06           ` Geert Uytterhoeven
2019-11-04 21:10           ` John Paul Adrian Glaubitz
2019-11-04 21:21             ` Michael Schmitz
2019-11-04 21:42               ` John Paul Adrian Glaubitz
2019-11-05  6:57                 ` Michael Schmitz
2019-11-06  1:34                   ` Michael Schmitz
2019-11-06  2:47 ` [PATCH v3] m68k/atari: convert legacy Falcon IDE driver to platform driver Michael Schmitz
2019-11-18  9:20   ` Geert Uytterhoeven
2019-11-18  9:41     ` John Paul Adrian Glaubitz

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