Davinci: gpio - use ioremap()

This patch modifies the gpio_base definition in davinci_soc_info to be a
physical address, which is then ioremap()ed by the gpio initialization
function.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/da830.c

@@ -1201,7 +1201,7 @@ static struct davinci_soc_info davinci_soc_info_da830 = {
 	.intc_irq_num		= DA830_N_CP_INTC_IRQ,
 	.timer_info		= &da830_timer_info,
 	.gpio_type		= GPIO_TYPE_DAVINCI,
-	.gpio_base		= IO_ADDRESS(DA8XX_GPIO_BASE),
+	.gpio_base		= DA8XX_GPIO_BASE,
 	.gpio_num		= 128,
 	.gpio_irq		= IRQ_DA8XX_GPIO0,
 	.serial_dev		= &da8xx_serial_device,

arch/arm/mach-davinci/da850.c

@@ -1086,7 +1086,7 @@ static struct davinci_soc_info davinci_soc_info_da850 = {
 	.intc_irq_num		= DA850_N_CP_INTC_IRQ,
 	.timer_info		= &da850_timer_info,
 	.gpio_type		= GPIO_TYPE_DAVINCI,
-	.gpio_base		= IO_ADDRESS(DA8XX_GPIO_BASE),
+	.gpio_base		= DA8XX_GPIO_BASE,
 	.gpio_num		= 144,
 	.gpio_irq		= IRQ_DA8XX_GPIO0,
 	.serial_dev		= &da8xx_serial_device,

arch/arm/mach-davinci/dm355.c

@@ -855,7 +855,7 @@ static struct davinci_soc_info davinci_soc_info_dm355 = {
 	.intc_irq_num		= DAVINCI_N_AINTC_IRQ,
 	.timer_info		= &dm355_timer_info,
 	.gpio_type		= GPIO_TYPE_DAVINCI,
-	.gpio_base		= IO_ADDRESS(DAVINCI_GPIO_BASE),
+	.gpio_base		= DAVINCI_GPIO_BASE,
 	.gpio_num		= 104,
 	.gpio_irq		= IRQ_DM355_GPIOBNK0,
 	.serial_dev		= &dm355_serial_device,

arch/arm/mach-davinci/dm365.c

@@ -1060,7 +1060,7 @@ static struct davinci_soc_info davinci_soc_info_dm365 = {
 	.intc_irq_num		= DAVINCI_N_AINTC_IRQ,
 	.timer_info		= &dm365_timer_info,
 	.gpio_type		= GPIO_TYPE_DAVINCI,
-	.gpio_base		= IO_ADDRESS(DAVINCI_GPIO_BASE),
+	.gpio_base		= DAVINCI_GPIO_BASE,
 	.gpio_num		= 104,
 	.gpio_irq		= IRQ_DM365_GPIO0,
 	.gpio_unbanked		= 8,	/* really 16 ... skip muxed GPIOs */

arch/arm/mach-davinci/dm644x.c

@@ -746,7 +746,7 @@ static struct davinci_soc_info davinci_soc_info_dm644x = {
 	.intc_irq_num		= DAVINCI_N_AINTC_IRQ,
 	.timer_info		= &dm644x_timer_info,
 	.gpio_type		= GPIO_TYPE_DAVINCI,
-	.gpio_base		= IO_ADDRESS(DAVINCI_GPIO_BASE),
+	.gpio_base		= DAVINCI_GPIO_BASE,
 	.gpio_num		= 71,
 	.gpio_irq		= IRQ_GPIOBNK0,
 	.serial_dev		= &dm644x_serial_device,

arch/arm/mach-davinci/dm646x.c

@@ -830,7 +830,7 @@ static struct davinci_soc_info davinci_soc_info_dm646x = {
 	.intc_irq_num		= DAVINCI_N_AINTC_IRQ,
 	.timer_info		= &dm646x_timer_info,
 	.gpio_type		= GPIO_TYPE_DAVINCI,
-	.gpio_base		= IO_ADDRESS(DAVINCI_GPIO_BASE),
+	.gpio_base		= DAVINCI_GPIO_BASE,
 	.gpio_num		= 43, /* Only 33 usable */
 	.gpio_irq		= IRQ_DM646X_GPIOBNK0,
 	.serial_dev		= &dm646x_serial_device,

arch/arm/mach-davinci/gpio.c

@@ -37,22 +37,22 @@ struct davinci_gpio_regs {
 	container_of(chip, struct davinci_gpio_controller, chip)
 
 static struct davinci_gpio_controller chips[DIV_ROUND_UP(DAVINCI_N_GPIO, 32)];
+static void __iomem *gpio_base;
 
 static struct davinci_gpio_regs __iomem __init *gpio2regs(unsigned gpio)
 {
 	void __iomem *ptr;
-	void __iomem *base = davinci_soc_info.gpio_base;
 
 	if (gpio < 32 * 1)
-		ptr = base + 0x10;
+		ptr = gpio_base + 0x10;
 	else if (gpio < 32 * 2)
-		ptr = base + 0x38;
+		ptr = gpio_base + 0x38;
 	else if (gpio < 32 * 3)
-		ptr = base + 0x60;
+		ptr = gpio_base + 0x60;
 	else if (gpio < 32 * 4)
-		ptr = base + 0x88;
+		ptr = gpio_base + 0x88;
 	else if (gpio < 32 * 5)
-		ptr = base + 0xb0;
+		ptr = gpio_base + 0xb0;
 	else
 		ptr = NULL;
 	return ptr;
@@ -157,6 +157,10 @@ static int __init davinci_gpio_setup(void)
 	if (WARN_ON(DAVINCI_N_GPIO < ngpio))
 		ngpio = DAVINCI_N_GPIO;
 
+	gpio_base = ioremap(soc_info->gpio_base, SZ_4K);
+	if (WARN_ON(!gpio_base))
+		return -ENOMEM;
+
 	for (i = 0, base = 0; base < ngpio; i++, base += 32) {
 		chips[i].chip.label = "DaVinci";
 
@@ -445,7 +449,7 @@ static int __init davinci_gpio_irq_setup(void)
 	/* BINTEN -- per-bank interrupt enable. genirq would also let these
 	 * bits be set/cleared dynamically.
 	 */
-	__raw_writel(binten, soc_info->gpio_base + 0x08);
+	__raw_writel(binten, gpio_base + 0x08);
 
 	printk(KERN_INFO "DaVinci: %d gpio irqs\n", irq - gpio_to_irq(0));
 

arch/arm/mach-davinci/include/mach/common.h

@@ -60,7 +60,7 @@ struct davinci_soc_info {
 	unsigned long			intc_irq_num;
 	struct davinci_timer_info	*timer_info;
 	int				gpio_type;
-	void __iomem			*gpio_base;
+	u32				gpio_base;
 	unsigned			gpio_num;
 	unsigned			gpio_irq;
 	unsigned			gpio_unbanked;