Merge branch 'omap-pool'

[linux-2.6-omap-h63xx.git] / drivers / w1 / masters / ds1wm.c

diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c
index 29e144f81cbe2e8953f1947c745419d1894a0620..37f08c85060877508a85ed58cdf0e2a7974fb67b 100644 (file)
--- a/drivers/w1/masters/ds1wm.c
+++ b/drivers/w1/masters/ds1wm.c
@@ -16,10 +16,10 @@
 #include <linux/irq.h>
 #include <linux/pm.h>
 #include <linux/platform_device.h>
-#include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/delay.h>
-#include <linux/ds1wm.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/ds1wm.h>
 
 #include <asm/io.h>
 
@@ -89,10 +89,9 @@ struct ds1wm_data {
        void            __iomem *map;
        int             bus_shift; /* # of shifts to calc register offsets */
        struct platform_device *pdev;
-       struct ds1wm_platform_data *pdata;
+       struct mfd_cell *cell;
        int             irq;
        int             active_high;
-       struct clk      *clk;
        int             slave_present;
        void            *reset_complete;
        void            *read_complete;
@@ -215,17 +214,17 @@ static int ds1wm_find_divisor(int gclk)
 
 static void ds1wm_up(struct ds1wm_data *ds1wm_data)
 {
-       int gclk, divisor;
+       int divisor;
+       struct ds1wm_driver_data *plat = ds1wm_data->cell->driver_data;
 
-       if (ds1wm_data->pdata->enable)
-               ds1wm_data->pdata->enable(ds1wm_data->pdev);
+       if (ds1wm_data->cell->enable)
+               ds1wm_data->cell->enable(ds1wm_data->pdev);
 
-       gclk = clk_get_rate(ds1wm_data->clk);
-       clk_enable(ds1wm_data->clk);
-       divisor = ds1wm_find_divisor(gclk);
+       divisor = ds1wm_find_divisor(plat->clock_rate);
        if (divisor == 0) {
                dev_err(&ds1wm_data->pdev->dev,
-                       "no suitable divisor for %dHz clock\n", gclk);
+                       "no suitable divisor for %dHz clock\n",
+                       plat->clock_rate);
                return;
        }
        ds1wm_write_register(ds1wm_data, DS1WM_CLKDIV, divisor);
@@ -244,10 +243,8 @@ static void ds1wm_down(struct ds1wm_data *ds1wm_data)
        ds1wm_write_register(ds1wm_data, DS1WM_INT_EN,
                             ds1wm_data->active_high ? DS1WM_INTEN_IAS : 0);
 
-       if (ds1wm_data->pdata->disable)
-               ds1wm_data->pdata->disable(ds1wm_data->pdev);
-
-       clk_disable(ds1wm_data->clk);
+       if (ds1wm_data->cell->disable)
+               ds1wm_data->cell->disable(ds1wm_data->pdev);
 }
 
 /* --------------------------------------------------------------------- */
@@ -330,13 +327,18 @@ static struct w1_bus_master ds1wm_master = {
 static int ds1wm_probe(struct platform_device *pdev)
 {
        struct ds1wm_data *ds1wm_data;
-       struct ds1wm_platform_data *plat;
+       struct ds1wm_driver_data *plat;
        struct resource *res;
+       struct mfd_cell *cell;
        int ret;
 
        if (!pdev)
                return -ENODEV;
 
+       cell = pdev->dev.platform_data;
+       if (!cell)
+               return -ENODEV;
+
        ds1wm_data = kzalloc(sizeof(*ds1wm_data), GFP_KERNEL);
        if (!ds1wm_data)
                return -ENOMEM;
@@ -348,15 +350,18 @@ static int ds1wm_probe(struct platform_device *pdev)
                ret = -ENXIO;
                goto err0;
        }
-       ds1wm_data->map = ioremap(res->start, res->end - res->start + 1);
+       ds1wm_data->map = ioremap(res->start, resource_size(res));
        if (!ds1wm_data->map) {
                ret = -ENOMEM;
                goto err0;
        }
-       plat = pdev->dev.platform_data;
-       ds1wm_data->bus_shift = plat->bus_shift;
+       plat = cell->driver_data;
+
+       /* calculate bus shift from mem resource */
+       ds1wm_data->bus_shift = resource_size(res) >> 3;
+
        ds1wm_data->pdev = pdev;
-       ds1wm_data->pdata = plat;
+       ds1wm_data->cell = cell;
 
        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
        if (!res) {
@@ -376,26 +381,18 @@ static int ds1wm_probe(struct platform_device *pdev)
        if (ret)
                goto err1;
 
-       ds1wm_data->clk = clk_get(&pdev->dev, "ds1wm");
-       if (IS_ERR(ds1wm_data->clk)) {
-               ret = PTR_ERR(ds1wm_data->clk);
-               goto err2;
-       }
-
        ds1wm_up(ds1wm_data);
 
        ds1wm_master.data = (void *)ds1wm_data;
 
        ret = w1_add_master_device(&ds1wm_master);
        if (ret)
-               goto err3;
+               goto err2;
 
        return 0;
 
-err3:
-       ds1wm_down(ds1wm_data);
-       clk_put(ds1wm_data->clk);
 err2:
+       ds1wm_down(ds1wm_data);
        free_irq(ds1wm_data->irq, ds1wm_data);
 err1:
        iounmap(ds1wm_data->map);
@@ -434,7 +431,6 @@ static int ds1wm_remove(struct platform_device *pdev)
 
        w1_remove_master_device(&ds1wm_master);
        ds1wm_down(ds1wm_data);
-       clk_put(ds1wm_data->clk);
        free_irq(ds1wm_data->irq, ds1wm_data);
        iounmap(ds1wm_data->map);
        kfree(ds1wm_data);