1 files changed, 145 insertions, 146 deletions

diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 40569f40e90..de24232c519 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -11,36 +11,37 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/sched.h>
 #include <linux/platform_device.h>
 #include <linux/errno.h>
 #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 <asm/hardware.h>
-#include <asm/io.h>
-#include <asm/sizes.h>
-
-#include <asm/arch/at91rm9200.h>
-#include <asm/arch/board.h>
-#include <asm/arch/gpio.h>
+#include <mach/at91rm9200_mc.h>
+#include <mach/at91_ramc.h>
 
 
 /*
  * A0..A10 work in each range; A23 indicates I/O space;  A25 is CFRNW;
  * some other bit in {A24,A22..A11} is nREG to flag memory access
  * (vs attributes).  So more than 2KB/region would just be waste.
+ * Note: These are offsets from the physical base address.
  */
-#define	CF_ATTR_PHYS	(AT91_CF_BASE)
-#define	CF_IO_PHYS	(AT91_CF_BASE  + (1 << 23))
-#define	CF_MEM_PHYS	(AT91_CF_BASE  + 0x017ff800)
+#define	CF_ATTR_PHYS	(0)
+#define	CF_IO_PHYS	(1 << 23)
+#define	CF_MEM_PHYS	(0x017ff800)
 
 /*--------------------------------------------------------------------------*/
 
-static const char driver_name[] = "at91_cf";
-
 struct at91_cf_socket {
 	struct pcmcia_socket	socket;
 
@@ -48,13 +49,13 @@ struct at91_cf_socket {
 
 	struct platform_device	*pdev;
 	struct at91_cf_data	*board;
-};
 
-#define	SZ_2K			(2 * SZ_1K)
+	unsigned long		phys_baseaddr;
+};
 
 static inline int at91_cf_present(struct at91_cf_socket *cf)
 {
-	return !at91_get_gpio_value(cf->board->det_pin);
+	return !gpio_get_value(cf->board->det_pin);
 }
 
 /*--------------------------------------------------------------------------*/
@@ -64,17 +65,17 @@ static int at91_cf_ss_init(struct pcmcia_socket *s)
 	return 0;
 }
 
-static irqreturn_t at91_cf_irq(int irq, void *_cf, struct pt_regs *r)
+static irqreturn_t at91_cf_irq(int irq, void *_cf)
 {
-	struct at91_cf_socket	*cf = (struct at91_cf_socket *) _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);
 		}
@@ -94,13 +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 || at91_get_gpio_value(rdy))
+		if (!rdy || gpio_get_value(cf->board->irq_pin))
 			*sp |= SS_READY;
-		if (!vcc || at91_get_gpio_value(vcc))
+		if (!vcc || gpio_get_value(cf->board->vcc_pin))
 			*sp |= SS_POWERON;
 	} else
 		*sp = 0;
@@ -116,24 +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:
-				at91_set_gpio_value(cf->board->vcc_pin, 0);
-				break;
-			case 33:
-				at91_set_gpio_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 */
-	at91_set_gpio_value(cf->board->rst_pin, s->flags & SS_RESET);
+	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;
 }
@@ -154,9 +155,8 @@ 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.
-	 * Always set CSR4 ... PCMCIA won't always unmap things.
 	 */
-	csr = at91_sys_read(AT91_SMC_CSR(4)) & ~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
@@ -168,14 +168,14 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 	 * some cards only like that way to get at the odd byte, despite
 	 * CF 3.0 spec table 35 also giving the D8-D15 option.
 	 */
-	if (!(io->flags & (MAP_16BIT|MAP_AUTOSZ))) {
+	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(4), 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;
@@ -194,11 +194,11 @@ at91_cf_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *map)
 
 	cf = container_of(s, struct at91_cf_socket, socket);
 
-	map->flags &= MAP_ACTIVE|MAP_ATTRIB|MAP_16BIT;
+	map->flags &= (MAP_ACTIVE | MAP_ATTRIB | MAP_16BIT);
 	if (map->flags & MAP_ATTRIB)
-		map->static_start = CF_ATTR_PHYS;
+		map->static_start = cf->phys_baseaddr + CF_ATTR_PHYS;
 	else
-		map->static_start = CF_MEM_PHYS;
+		map->static_start = cf->phys_baseaddr + CF_MEM_PHYS;
 
 	return 0;
 }
@@ -214,63 +214,89 @@ 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;
-	unsigned int		csa;
 	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 = kcalloc(1, sizeof *cf, GFP_KERNEL);
+	cf = devm_kzalloc(&pdev->dev, sizeof(*cf), GFP_KERNEL);
 	if (!cf)
 		return -ENOMEM;
 
 	cf->board = board;
 	cf->pdev = pdev;
+	cf->phys_baseaddr = io->start;
 	platform_set_drvdata(pdev, cf);
 
-	/* CF takes over CS4, CS5, CS6 */
-	csa = at91_sys_read(AT91_EBI_CSA);
-	at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
-
-	/* force poweron defaults for these pins ... */
-	(void) at91_set_A_periph(AT91_PIN_PC9, 0);	/* A25/CFRNW */
-	(void) at91_set_A_periph(AT91_PIN_PC10, 0);	/* NCS4/CFCS */
-	(void) at91_set_A_periph(AT91_PIN_PC11, 0);	/* NCS5/CFCE1 */
-	(void) at91_set_A_periph(AT91_PIN_PC12, 0);	/* NCS6/CFCE2 */
+	/* must be a GPIO; ergo must trigger on both edges */
+	status = devm_gpio_request(&pdev->dev, board->det_pin, "cf_det");
+	if (status < 0)
+		return status;
 
-	/* nWAIT is _not_ a default setting */
-	(void) at91_set_A_periph(AT91_PIN_PC6, 1);	/*  nWAIT */
+	status = devm_request_irq(&pdev->dev, gpio_to_irq(board->det_pin),
+					at91_cf_irq, 0, "at91_cf detect", cf);
+	if (status < 0)
+		return status;
 
-	/*
-	 * Static memory controller timing adjustments.
-	 * REVISIT:  these timings are in terms of MCK cycles, so
-	 * when MCK changes (cpufreq etc) so must these values...
-	 */
-	at91_sys_write(AT91_SMC_CSR(4),
-				  AT91_SMC_ACSS_STD
-				| AT91_SMC_DBW_16
-				| AT91_SMC_BAT
-				| AT91_SMC_WSEN
-				| AT91_SMC_NWS_(32)	/* wait states */
-				| AT91_SMC_RWSETUP_(6)	/* setup time */
-				| AT91_SMC_RWHOLD_(4)	/* hold time */
-	);
+	device_init_wakeup(&pdev->dev, 1);
 
-	/* must be a GPIO; ergo must trigger on both edges */
-	status = request_irq(board->det_pin, at91_cf_irq,
-			IRQF_SAMPLE_RANDOM, driver_name, cf);
+	status = devm_gpio_request(&pdev->dev, board->rst_pin, "cf_rst");
 	if (status < 0)
-		goto fail0;
-	device_init_wakeup(&pdev->dev, 1);
+		goto fail0a;
+
+	if (gpio_is_valid(board->vcc_pin)) {
+		status = devm_gpio_request(&pdev->dev, board->vcc_pin, "cf_vcc");
+		if (status < 0)
+			goto fail0a;
+	}
 
 	/*
 	 * The card driver will request this irq later as needed.
@@ -278,30 +304,38 @@ 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 = request_irq(board->irq_pin, at91_cf_irq,
-				IRQF_SHARED, driver_name, cf);
+	if (gpio_is_valid(board->irq_pin)) {
+		status = devm_gpio_request(&pdev->dev, board->irq_pin, "cf_irq");
+		if (status < 0)
+			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 fail0a;
-		cf->socket.pci_irq = board->irq_pin;
+		cf->socket.pci_irq = gpio_to_irq(board->irq_pin);
 	} else
-		cf->socket.pci_irq = NR_IRQS + 1;
+		cf->socket.pci_irq = nr_irqs + 1;
 
 	/* pcmcia layer only remaps "real" memory not iospace */
-	cf->socket.io_offset = (unsigned long) ioremap(CF_IO_PHYS, SZ_2K);
-	if (!cf->socket.io_offset)
-		goto fail1;
+	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 fail0a;
+	}
 
-	/* reserve CS4, CS5, and CS6 regions; but use just CS4 */
-	if (!request_mem_region(io->start, io->end + 1 - io->start,
-				driver_name))
-		goto fail1;
+	/* reserve chip-select regions */
+	if (!devm_request_mem_region(&pdev->dev, io->start, resource_size(io), "at91_cf")) {
+		status = -ENXIO;
+		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.dev = &pdev->dev;
+	cf->socket.dev.parent = &pdev->dev;
 	cf->socket.ops = &at91_cf_ops;
 	cf->socket.resource_ops = &pccard_static_ops;
 	cf->socket.features = SS_CAP_PCCARD | SS_CAP_STATIC_MAP
@@ -311,44 +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:
-	iounmap((void __iomem *) cf->socket.io_offset);
-	release_mem_region(io->start, io->end + 1 - io->start);
-fail1:
-	if (board->irq_pin)
-		free_irq(board->irq_pin, cf);
 fail0a:
-	free_irq(board->det_pin, cf);
 	device_init_wakeup(&pdev->dev, 0);
-fail0:
-	at91_sys_write(AT91_EBI_CSA, csa);
-	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;
-	unsigned int		csa;
 
 	pcmcia_unregister_socket(&cf->socket);
-	if (board->irq_pin)
-		free_irq(board->irq_pin, cf);
-	free_irq(board->det_pin, cf);
 	device_init_wakeup(&pdev->dev, 0);
-	iounmap((void __iomem *) cf->socket.io_offset);
-	release_mem_region(io->start, io->end + 1 - io->start);
-
-	csa = at91_sys_read(AT91_EBI_CSA);
-	at91_sys_write(AT91_EBI_CSA, csa & ~AT91_EBI_CS4A);
 
-	kfree(cf);
 	return 0;
 }
 
@@ -359,15 +371,11 @@ static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
 	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
 	struct at91_cf_data	*board = cf->board;
 
-	pcmcia_socket_dev_suspend(&pdev->dev, mesg);
-	if (device_may_wakeup(&pdev->dev))
-		enable_irq_wake(board->det_pin);
-	else {
-		disable_irq_wake(board->det_pin);
-		disable_irq(board->det_pin);
+	if (device_may_wakeup(&pdev->dev)) {
+		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));
 	}
-	if (board->irq_pin)
-		disable_irq(board->irq_pin);
 	return 0;
 }
 
@@ -376,11 +384,12 @@ static int at91_cf_resume(struct platform_device *pdev)
 	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
 	struct at91_cf_data	*board = cf->board;
 
-	if (board->irq_pin)
-		enable_irq(board->irq_pin);
-	if (!device_may_wakeup(&pdev->dev))
-		enable_irq(board->det_pin);
-	pcmcia_socket_dev_resume(&pdev->dev);
+	if (device_may_wakeup(&pdev->dev)) {
+		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;
 }
 
@@ -391,29 +400,19 @@ 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),
 	},
 	.probe		= at91_cf_probe,
-	.remove		= __exit_p(at91_cf_remove),
+	.remove		= at91_cf_remove,
 	.suspend	= at91_cf_suspend,
 	.resume		= at91_cf_resume,
 };
 
-/*--------------------------------------------------------------------------*/
-
-static int __init at91_cf_init(void)
-{
-	return platform_driver_register(&at91_cf_driver);
-}
-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");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:at91_cf");