1 files changed, 111 insertions, 112 deletions

diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index fb33fa42d24..de24232c519 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -16,16 +16,18 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/platform_data/atmel.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
 
 #include <pcmcia/ss.h>
 
-#include <mach/hardware.h>
-#include <asm/io.h>
-#include <asm/sizes.h>
-#include <asm/gpio.h>
-
-#include <mach/board.h>
 #include <mach/at91rm9200_mc.h>
+#include <mach/at91_ramc.h>
 
 
 /*
@@ -40,8 +42,6 @@
 
 /*--------------------------------------------------------------------------*/
 
-static const char driver_name[] = "at91_cf";
-
 struct at91_cf_socket {
 	struct pcmcia_socket	socket;
 
@@ -69,13 +69,13 @@ static irqreturn_t at91_cf_irq(int irq, void *_cf)
 {
 	struct at91_cf_socket *cf = _cf;
 
-	if (irq == cf->board->det_pin) {
+	if (irq == gpio_to_irq(cf->board->det_pin)) {
 		unsigned present = at91_cf_present(cf);
 
 		/* kick pccard as needed */
 		if (present != cf->present) {
 			cf->present = present;
-			pr_debug("%s: card %s\n", driver_name,
+			dev_dbg(&cf->pdev->dev, "card %s\n",
 					present ? "present" : "gone");
 			pcmcia_parse_events(&cf->socket, SS_DETECT);
 		}
@@ -95,13 +95,13 @@ static int at91_cf_get_status(struct pcmcia_socket *s, u_int *sp)
 
 	/* NOTE: CF is always 3VCARD */
 	if (at91_cf_present(cf)) {
-		int rdy	= cf->board->irq_pin;	/* RDY/nIRQ */
-		int vcc	= cf->board->vcc_pin;
+		int rdy	= gpio_is_valid(cf->board->irq_pin);	/* RDY/nIRQ */
+		int vcc	= gpio_is_valid(cf->board->vcc_pin);
 
 		*sp = SS_DETECT | SS_3VCARD;
-		if (!rdy || gpio_get_value(rdy))
+		if (!rdy || gpio_get_value(cf->board->irq_pin))
 			*sp |= SS_READY;
-		if (!vcc || gpio_get_value(vcc))
+		if (!vcc || gpio_get_value(cf->board->vcc_pin))
 			*sp |= SS_POWERON;
 	} else
 		*sp = 0;
@@ -117,24 +117,24 @@ at91_cf_set_socket(struct pcmcia_socket *sock, struct socket_state_t *s)
 	cf = container_of(sock, struct at91_cf_socket, socket);
 
 	/* switch Vcc if needed and possible */
-	if (cf->board->vcc_pin) {
+	if (gpio_is_valid(cf->board->vcc_pin)) {
 		switch (s->Vcc) {
-			case 0:
-				gpio_set_value(cf->board->vcc_pin, 0);
-				break;
-			case 33:
-				gpio_set_value(cf->board->vcc_pin, 1);
-				break;
-			default:
-				return -EINVAL;
+		case 0:
+			gpio_set_value(cf->board->vcc_pin, 0);
+			break;
+		case 33:
+			gpio_set_value(cf->board->vcc_pin, 1);
+			break;
+		default:
+			return -EINVAL;
 		}
 	}
 
 	/* toggle reset if needed */
 	gpio_set_value(cf->board->rst_pin, s->flags & SS_RESET);
 
-	pr_debug("%s: Vcc %d, io_irq %d, flags %04x csc %04x\n",
-		driver_name, s->Vcc, s->io_irq, s->flags, s->csc_mask);
+	dev_dbg(&cf->pdev->dev, "Vcc %d, io_irq %d, flags %04x csc %04x\n",
+				s->Vcc, s->io_irq, s->flags, s->csc_mask);
 
 	return 0;
 }
@@ -156,7 +156,7 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 	/*
 	 * Use 16 bit accesses unless/until we need 8-bit i/o space.
 	 */
-	csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
+	csr = at91_ramc_read(0, AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
 
 	/*
 	 * NOTE: this CF controller ignores IOIS16, so we can't really do
@@ -170,12 +170,12 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 	 */
 	if (!(io->flags & (MAP_16BIT | MAP_AUTOSZ))) {
 		csr |= AT91_SMC_DBW_8;
-		pr_debug("%s: 8bit i/o bus\n", driver_name);
+		dev_dbg(&cf->pdev->dev, "8bit i/o bus\n");
 	} else {
 		csr |= AT91_SMC_DBW_16;
-		pr_debug("%s: 16bit i/o bus\n", driver_name);
+		dev_dbg(&cf->pdev->dev, "16bit i/o bus\n");
 	}
-	at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr);
+	at91_ramc_write(0, AT91_SMC_CSR(cf->board->chipselect), csr);
 
 	io->start = cf->socket.io_offset;
 	io->stop = io->start + SZ_2K - 1;
@@ -214,21 +214,60 @@ static struct pccard_operations at91_cf_ops = {
 
 /*--------------------------------------------------------------------------*/
 
-static int __init at91_cf_probe(struct platform_device *pdev)
+#if defined(CONFIG_OF)
+static const struct of_device_id at91_cf_dt_ids[] = {
+	{ .compatible = "atmel,at91rm9200-cf" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, at91_cf_dt_ids);
+
+static int at91_cf_dt_init(struct platform_device *pdev)
+{
+	struct at91_cf_data *board;
+
+	board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
+	if (!board)
+		return -ENOMEM;
+
+	board->irq_pin = of_get_gpio(pdev->dev.of_node, 0);
+	board->det_pin = of_get_gpio(pdev->dev.of_node, 1);
+	board->vcc_pin = of_get_gpio(pdev->dev.of_node, 2);
+	board->rst_pin = of_get_gpio(pdev->dev.of_node, 3);
+
+	pdev->dev.platform_data = board;
+
+	return 0;
+}
+#else
+static int at91_cf_dt_init(struct platform_device *pdev)
+{
+	return -ENODEV;
+}
+#endif
+
+static int at91_cf_probe(struct platform_device *pdev)
 {
 	struct at91_cf_socket	*cf;
 	struct at91_cf_data	*board = pdev->dev.platform_data;
 	struct resource		*io;
 	int			status;
 
-	if (!board || !board->det_pin || !board->rst_pin)
+	if (!board) {
+		status = at91_cf_dt_init(pdev);
+		if (status)
+			return status;
+
+		board = pdev->dev.platform_data;
+	}
+
+	if (!gpio_is_valid(board->det_pin) || !gpio_is_valid(board->rst_pin))
 		return -ENODEV;
 
 	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!io)
 		return -ENODEV;
 
-	cf = kzalloc(sizeof *cf, GFP_KERNEL);
+	cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL);
 	if (!cf)
 		return -ENOMEM;
 
@@ -238,22 +277,25 @@ static int __init at91_cf_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, cf);
 
 	/* must be a GPIO; ergo must trigger on both edges */
-	status = gpio_request(board->det_pin, "cf_det");
+	status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det");
 	if (status < 0)
-		goto fail0;
-	status = request_irq(board->det_pin, at91_cf_irq, 0, driver_name, cf);
+		return status;
+
+	status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin),
+					at91_cf_irq, 0, "at91_cf detect", cf);
 	if (status < 0)
-		goto fail00;
+		return status;
+
 	device_init_wakeup(&pdev->dev, 1);
 
-	status = gpio_request(board->rst_pin, "cf_rst");
+	status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst");
 	if (status < 0)
 		goto fail0a;
 
-	if (board->vcc_pin) {
-		status = gpio_request(board->vcc_pin, "cf_vcc");
+	if (gpio_is_valid(board->vcc_pin)) {
+		status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc");
 		if (status < 0)
-			goto fail0b;
+			goto fail0a;
 	}
 
 	/*
@@ -262,35 +304,35 @@ static int __init at91_cf_probe(struct platform_device *pdev)
 	 * unless we report that we handle everything (sigh).
 	 * (Note:  DK board doesn't wire the IRQ pin...)
 	 */
-	if (board->irq_pin) {
-		status = gpio_request(board->irq_pin, "cf_irq");
+	if (gpio_is_valid(board->irq_pin)) {
+		status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq");
 		if (status < 0)
-			goto fail0c;
-		status = request_irq(board->irq_pin, at91_cf_irq,
-				IRQF_SHARED, driver_name, cf);
+			goto fail0a;
+
+		status = devm_request_irq(&pdev->dev, gpio_to_irq(board->irq_pin),
+					at91_cf_irq, IRQF_SHARED, "at91_cf", cf);
 		if (status < 0)
-			goto fail0d;
-		cf->socket.pci_irq = board->irq_pin;
+			goto fail0a;
+		cf->socket.pci_irq = gpio_to_irq(board->irq_pin);
 	} else
 		cf->socket.pci_irq = nr_irqs + 1;
 
 	/* pcmcia layer only remaps "real" memory not iospace */
-	cf->socket.io_offset = (unsigned long)
-			ioremap(cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
+	cf->socket.io_offset = (unsigned long) devm_ioremap(&pdev->dev,
+					cf->phys_baseaddr + CF_IO_PHYS, SZ_2K);
 	if (!cf->socket.io_offset) {
 		status = -ENXIO;
-		goto fail1;
+		goto fail0a;
 	}
 
 	/* reserve chip-select regions */
-	if (!request_mem_region(io->start, io->end + 1 - io->start,
-				driver_name)) {
+	if (!devm_request_mem_region(&pdev->dev, io->start, resource_size(io), "at91_cf")) {
 		status = -ENXIO;
-		goto fail1;
+		goto fail0a;
 	}
 
-	pr_info("%s: irqs det #%d, io #%d\n", driver_name,
-		board->det_pin, board->irq_pin);
+	dev_info(&pdev->dev, "irqs det #%d, io #%d\n",
+		gpio_to_irq(board->det_pin), gpio_to_irq(board->irq_pin));
 
 	cf->socket.owner = THIS_MODULE;
 	cf->socket.dev.parent = &pdev->dev;
@@ -303,55 +345,22 @@ static int __init at91_cf_probe(struct platform_device *pdev)
 
 	status = pcmcia_register_socket(&cf->socket);
 	if (status < 0)
-		goto fail2;
+		goto fail0a;
 
 	return 0;
 
-fail2:
-	release_mem_region(io->start, io->end + 1 - io->start);
-fail1:
-	if (cf->socket.io_offset)
-		iounmap((void __iomem *) cf->socket.io_offset);
-	if (board->irq_pin) {
-		free_irq(board->irq_pin, cf);
-fail0d:
-		gpio_free(board->irq_pin);
-	}
-fail0c:
-	if (board->vcc_pin)
-		gpio_free(board->vcc_pin);
-fail0b:
-	gpio_free(board->rst_pin);
 fail0a:
 	device_init_wakeup(&pdev->dev, 0);
-	free_irq(board->det_pin, cf);
-fail00:
-	gpio_free(board->det_pin);
-fail0:
-	kfree(cf);
 	return status;
 }
 
-static int __exit at91_cf_remove(struct platform_device *pdev)
+static int at91_cf_remove(struct platform_device *pdev)
 {
 	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
-	struct at91_cf_data	*board = cf->board;
-	struct resource		*io = cf->socket.io[0].res;
 
 	pcmcia_unregister_socket(&cf->socket);
-	release_mem_region(io->start, io->end + 1 - io->start);
-	iounmap((void __iomem *) cf->socket.io_offset);
-	if (board->irq_pin) {
-		free_irq(board->irq_pin, cf);
-		gpio_free(board->irq_pin);
-	}
-	if (board->vcc_pin)
-		gpio_free(board->vcc_pin);
-	gpio_free(board->rst_pin);
 	device_init_wakeup(&pdev->dev, 0);
-	free_irq(board->det_pin, cf);
-	gpio_free(board->det_pin);
-	kfree(cf);
+
 	return 0;
 }
 
@@ -363,9 +372,9 @@ static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
 	struct at91_cf_data	*board = cf->board;
 
 	if (device_may_wakeup(&pdev->dev)) {
-		enable_irq_wake(board->det_pin);
-		if (board->irq_pin)
-			enable_irq_wake(board->irq_pin);
+		enable_irq_wake(gpio_to_irq(board->det_pin));
+		if (gpio_is_valid(board->irq_pin))
+			enable_irq_wake(gpio_to_irq(board->irq_pin));
 	}
 	return 0;
 }
@@ -376,9 +385,9 @@ static int at91_cf_resume(struct platform_device *pdev)
 	struct at91_cf_data	*board = cf->board;
 
 	if (device_may_wakeup(&pdev->dev)) {
-		disable_irq_wake(board->det_pin);
-		if (board->irq_pin)
-			disable_irq_wake(board->irq_pin);
+		disable_irq_wake(gpio_to_irq(board->det_pin));
+		if (gpio_is_valid(board->irq_pin))
+			disable_irq_wake(gpio_to_irq(board->irq_pin));
 	}
 
 	return 0;
@@ -391,27 +400,17 @@ static int at91_cf_resume(struct platform_device *pdev)
 
 static struct platform_driver at91_cf_driver = {
 	.driver = {
-		.name		= (char *) driver_name,
+		.name		= "at91_cf",
 		.owner		= THIS_MODULE,
+		.of_match_table = of_match_ptr(at91_cf_dt_ids),
 	},
-	.remove		= __exit_p(at91_cf_remove),
+	.probe		= at91_cf_probe,
+	.remove		= at91_cf_remove,
 	.suspend	= at91_cf_suspend,
 	.resume		= at91_cf_resume,
 };
 
-/*--------------------------------------------------------------------------*/
-
-static int __init at91_cf_init(void)
-{
-	return platform_driver_probe(&at91_cf_driver, at91_cf_probe);
-}
-module_init(at91_cf_init);
-
-static void __exit at91_cf_exit(void)
-{
-	platform_driver_unregister(&at91_cf_driver);
-}
-module_exit(at91_cf_exit);
+module_platform_driver(at91_cf_driver);
 
 MODULE_DESCRIPTION("AT91 Compact Flash Driver");
 MODULE_AUTHOR("David Brownell");