From 8c6d9d0a01d7b51b4d00365c87b05585a83055dd Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 1 Mar 2012 15:47:10 +0000
Subject: [PATCH] ARM: riscpc: pass IRQ resources into keyboard driver

Rather than including asm/irq.h into the keyboard driver, pass the
IRQ numbers via the platform device instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-rpc/riscpc.c   |  7 +++++++
 drivers/input/serio/rpckbd.c | 44 +++++++++++++++++++++++++++++++++++++-------
 2 files changed, 44 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
index 3d44a59..30baaa8 100644
--- a/arch/arm/mach-rpc/riscpc.c
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -134,12 +134,19 @@ static struct platform_device iomd_device = {
 	.resource		= iomd_resources,
 };
 
+static struct resource iomd_kart_resources[] = {
+	DEFINE_RES_IRQ(IRQ_KEYBOARDRX),
+	DEFINE_RES_IRQ(IRQ_KEYBOARDTX),
+};
+
 static struct platform_device kbd_device = {
 	.name			= "kart",
 	.id			= -1,
 	.dev			= {
 		.parent 	= &iomd_device.dev,
 	},
+	.num_resources		= ARRAY_SIZE(iomd_kart_resources),
+	.resource		= iomd_kart_resources,
 };
 
 static struct plat_serial8250_port serial_platform_data[] = {
diff --git a/drivers/input/serio/rpckbd.c b/drivers/input/serio/rpckbd.c
index 8b44ddc..58b2244 100644
--- a/drivers/input/serio/rpckbd.c
+++ b/drivers/input/serio/rpckbd.c
@@ -36,7 +36,6 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 
-#include <asm/irq.h>
 #include <mach/hardware.h>
 #include <asm/hardware/iomd.h>
 #include <asm/system.h>
@@ -46,6 +45,11 @@ MODULE_DESCRIPTION("Acorn RiscPC PS/2 keyboard controller driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:kart");
 
+struct rpckbd_data {
+	int tx_irq;
+	int rx_irq;
+};
+
 static int rpckbd_write(struct serio *port, unsigned char val)
 {
 	while (!(iomd_readb(IOMD_KCTRL) & (1 << 7)))
@@ -78,19 +82,21 @@ static irqreturn_t rpckbd_tx(int irq, void *dev_id)
 
 static int rpckbd_open(struct serio *port)
 {
+	struct rpckbd_data *rpckbd = port->port_data;
+
 	/* Reset the keyboard state machine. */
 	iomd_writeb(0, IOMD_KCTRL);
 	iomd_writeb(8, IOMD_KCTRL);
 	iomd_readb(IOMD_KARTRX);
 
-	if (request_irq(IRQ_KEYBOARDRX, rpckbd_rx, 0, "rpckbd", port) != 0) {
+	if (request_irq(rpckbd->rx_irq, rpckbd_rx, 0, "rpckbd", port) != 0) {
 		printk(KERN_ERR "rpckbd.c: Could not allocate keyboard receive IRQ\n");
 		return -EBUSY;
 	}
 
-	if (request_irq(IRQ_KEYBOARDTX, rpckbd_tx, 0, "rpckbd", port) != 0) {
+	if (request_irq(rpckbd->tx_irq, rpckbd_tx, 0, "rpckbd", port) != 0) {
 		printk(KERN_ERR "rpckbd.c: Could not allocate keyboard transmit IRQ\n");
-		free_irq(IRQ_KEYBOARDRX, port);
+		free_irq(rpckbd->rx_irq, port);
 		return -EBUSY;
 	}
 
@@ -99,8 +105,10 @@ static int rpckbd_open(struct serio *port)
 
 static void rpckbd_close(struct serio *port)
 {
-	free_irq(IRQ_KEYBOARDRX, port);
-	free_irq(IRQ_KEYBOARDTX, port);
+	struct rpckbd_data *rpckbd = port->port_data;
+
+	free_irq(rpckbd->rx_irq, port);
+	free_irq(rpckbd->tx_irq, port);
 }
 
 /*
@@ -109,17 +117,35 @@ static void rpckbd_close(struct serio *port)
  */
 static int __devinit rpckbd_probe(struct platform_device *dev)
 {
+	struct rpckbd_data *rpckbd;
 	struct serio *serio;
+	int tx_irq, rx_irq;
+
+	rx_irq = platform_get_irq(dev, 0);
+	if (rx_irq <= 0)
+		return rx_irq < 0 ? rx_irq : -ENXIO;
+
+	tx_irq = platform_get_irq(dev, 1);
+	if (tx_irq <= 0)
+		return tx_irq < 0 ? tx_irq : -ENXIO;
 
 	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
-	if (!serio)
+	rpckbd = kzalloc(sizeof(*rpckbd), GFP_KERNEL);
+	if (!serio || !rpckbd) {
+		kfree(rpckbd);
+		kfree(serio);
 		return -ENOMEM;
+	}
+
+	rpckbd->rx_irq = rx_irq;
+	rpckbd->tx_irq = tx_irq;
 
 	serio->id.type		= SERIO_8042;
 	serio->write		= rpckbd_write;
 	serio->open		= rpckbd_open;
 	serio->close		= rpckbd_close;
 	serio->dev.parent	= &dev->dev;
+	serio->port_data	= rpckbd;
 	strlcpy(serio->name, "RiscPC PS/2 kbd port", sizeof(serio->name));
 	strlcpy(serio->phys, "rpckbd/serio0", sizeof(serio->phys));
 
@@ -131,7 +157,11 @@ static int __devinit rpckbd_probe(struct platform_device *dev)
 static int __devexit rpckbd_remove(struct platform_device *dev)
 {
 	struct serio *serio = platform_get_drvdata(dev);
+	struct rpckbd_data *rpckbd = serio->port_data;
+
 	serio_unregister_port(serio);
+	kfree(rpckbd);
+
 	return 0;
 }
 
-- 
2.7.4