Input: ams_delta_serio: Get FIQ buffer from platform_data

Instead of exporting the FIQ buffer symbol to be used in
ams-delta-serio driver, pass it to the driver as platform_data.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/ams-delta-fiq.c

@@ -40,8 +40,7 @@ static struct fiq_handler fh = {
  * keystrokes received from the qwerty keyboard.  See
  * <linux/platform_data/ams-delta-fiq.h> for details of offsets.
  */
-unsigned int fiq_buffer[1024];
-EXPORT_SYMBOL(fiq_buffer);
+static unsigned int fiq_buffer[1024];
 
 static struct irq_chip *irq_chip;
 static struct irq_data *irq_data[16];
@@ -203,9 +202,10 @@ void __init ams_delta_init_fiq(struct gpio_chip *chip,
 	val = omap_readl(OMAP_IH1_BASE + offset) | 1;
 	omap_writel(val, OMAP_IH1_BASE + offset);
 
-	/* Initialize serio device IRQ resource */
+	/* Initialize serio device IRQ resource and platform_data */
 	serio->resource[0].start = gpiod_to_irq(clk);
 	serio->resource[0].end = serio->resource[0].start;
+	serio->dev.platform_data = fiq_buffer;
 
 	/*
 	 * Since FIQ handler performs handling of GPIO registers for

arch/arm/mach-omap1/board-ams-delta.c

@@ -537,6 +537,14 @@ static struct resource ams_delta_serio_resources[] = {
 static struct platform_device ams_delta_serio_device = {
 	.name		= "ams-delta-serio",
 	.id		= PLATFORM_DEVID_NONE,
+	.dev		= {
+		/*
+		 * Initialize .platform_data explicitly with NULL to
+		 * indicate it is going to be used.  It will be replaced
+		 * with FIQ buffer address as soon as FIQ is initialized.
+		 */
+		.platform_data = NULL,
+	},
 	.num_resources	= ARRAY_SIZE(ams_delta_serio_resources),
 	.resource	= ams_delta_serio_resources,
 };