[PATCH 6/9]HDQ driver: use ioremap for HDQ base

[Madhusudhan Chikkature]

From: Madhusudhan Chikkature<[EMAIL PROTECTED]>

This patch provides the ioremap related changes to the driver.

Signed-off-by: Madhusudhan Chikkature<[EMAIL PROTECTED]>
---
 drivers/w1/masters/omap_hdq.c |   21 ++++++++++++++-------
 1 files changed, 14 insertions(+), 7 deletions(-)

Index: linux-omap-2.6/drivers/w1/masters/omap_hdq.c
===================================================================
--- linux-omap-2.6.orig/drivers/w1/masters/omap_hdq.c   2008-09-24
10:46:53.000000000 +0530
+++ linux-omap-2.6/drivers/w1/masters/omap_hdq.c        2008-09-24 
11:13:12.000000000
+0530
@@ -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_mast
  */
 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_
 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
                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 platfo
        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;


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