diff options
| author | Philipp Zabel <philipp.zabel@gmail.com> | 2009-02-17 10:06:41 +0100 |
|---|---|---|
| committer | Samuel Ortiz <samuel@sortiz.org> | 2009-04-05 00:32:20 +0200 |
| commit | a23a175795cdb202619ac176129b2f0c2a5c9456 (patch) | |
| tree | d3b03c863d501a107eaefffeb733179b19315327 /drivers/w1/masters/ds1wm.c | |
| parent | 3206450355100eae8e033645318b95bb60f1faff (diff) | |
| download | talos-op-linux-a23a175795cdb202619ac176129b2f0c2a5c9456.tar.gz talos-op-linux-a23a175795cdb202619ac176129b2f0c2a5c9456.zip | |
mfd: convert DS1WM to use MFD core
This patch converts the DS1WM driver into an MFD cell. It also
calculates the bus_shift parameter from the memory resource size.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Diffstat (limited to 'drivers/w1/masters/ds1wm.c')
| -rw-r--r-- | drivers/w1/masters/ds1wm.c | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c index 29e144f81cbe..f1e6b3dd1e43 100644 --- a/drivers/w1/masters/ds1wm.c +++ b/drivers/w1/masters/ds1wm.c @@ -19,7 +19,8 @@ #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> @@ -89,7 +90,7 @@ 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; @@ -217,8 +218,8 @@ static void ds1wm_up(struct ds1wm_data *ds1wm_data) { int gclk, divisor; - 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); @@ -244,8 +245,8 @@ 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); + if (ds1wm_data->cell->disable) + ds1wm_data->cell->disable(ds1wm_data->pdev); clk_disable(ds1wm_data->clk); } @@ -330,13 +331,18 @@ 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 +354,18 @@ 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) { |
