HDQ driver: use ioremap for HDQ base

This patch provides the ioremap related changes to the driver.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/w1/masters/omap_hdq.c

@@ -54,7 +54,7 @@ static int w1_id;
 
 struct hdq_data {
 	struct device		*dev;
-	resource_size_t		hdq_base;
+	void __iomem		*hdq_base;
 	struct	semaphore	hdq_semlock;
 	int			hdq_usecount;
 	struct	clk		*hdq_ick;
@@ -99,12 +99,12 @@ static struct w1_bus_master omap_w1_master = {
  */
 static inline u8 hdq_reg_in(struct hdq_data *hdq_data, u32 offset)
 {
-	return omap_readb(hdq_data->hdq_base + offset);
+	return __raw_readb(hdq_data->hdq_base + offset);
 }
 
 static inline u8 hdq_reg_out(struct hdq_data *hdq_data, u32 offset, u8 val)
 {
-	omap_writeb(val, hdq_data->hdq_base + offset);
+	__raw_writeb(val, hdq_data->hdq_base + offset);
 
 	return val;
 }
@@ -112,9 +112,9 @@ static inline u8 hdq_reg_out(struct hdq_data *hdq_data, u32 offset, u8 val)
 static inline u8 hdq_reg_merge(struct hdq_data *hdq_data, u32 offset,
 			u8 val, u8 mask)
 {
-	u8 new_val = (omap_readb(hdq_data->hdq_base + offset) & ~mask)
+	u8 new_val = (__raw_readb(hdq_data->hdq_base + offset) & ~mask)
 			| (val & mask);
-	omap_writeb(new_val, hdq_data->hdq_base + offset);
+	__raw_writeb(new_val, hdq_data->hdq_base + offset);
 
 	return new_val;
 }
@@ -589,7 +589,12 @@ static int __init omap_hdq_probe(struct platform_device *pdev)
 		goto err_resource;
 	}
 
-	hdq_data->hdq_base = res->start;
+	hdq_data->hdq_base = ioremap(res->start, SZ_4K);
+	if (!hdq_data->hdq_base) {
+		dev_dbg(&pdev->dev, "ioremap failed\n");
+		ret = -EINVAL;
+		goto err_ioremap;
+	}
 
 	/* get interface & functional clock objects */
 	hdq_data->hdq_ick = clk_get(&pdev->dev, "hdq_ick");
@@ -668,8 +673,9 @@ err_ick:
 	clk_put(hdq_data->hdq_fck);
 
 err_clk:
-	hdq_data->hdq_base = NULL;
+	iounmap(hdq_data->hdq_base);
 
+err_ioremap:
 err_resource:
 	platform_set_drvdata(pdev, NULL);
 	kfree(hdq_data);
@@ -695,6 +701,7 @@ static int omap_hdq_remove(struct platform_device *pdev)
 	clk_put(hdq_data->hdq_fck);
 	free_irq(INT_24XX_HDQ_IRQ, hdq_data);
 	platform_set_drvdata(pdev, NULL);
+	iounmap(hdq_data->hdq_base);
 	kfree(hdq_data);
 
 	return 0;