diff options
| author | Philipp Zabel <philipp.zabel@gmail.com> | 2008-07-10 04:17:02 +0400 |
|---|---|---|
| committer | Samuel Ortiz <samuel@sortiz.org> | 2008-07-20 21:56:44 +0400 |
| commit | 99cdb0c8c5e0e43652d25951a85bac82a1231591 (patch) | |
| tree | f3fb18cc928869393b80ac7feac86bd090ad54d4 /drivers/mfd/asic3.c | |
| parent | 279cac484e55317456900fe3567c7cb5bd46fd5f (diff) | |
| download | linux-99cdb0c8c5e0e43652d25951a85bac82a1231591.tar.xz | |
mfd: let asic3 use mem resource instead of bus_shift
The bus_shift parameter in platform_data is not needed
as we can tell the driver with the IOMEM_RESOURCE whether
the ASIC is located on a 16bit or 32bit memory bus.
The htc-egpio driver uses a more descriptive bus_width parameter,
but for drivers where the register map size fixed, we don't even
need this.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Diffstat (limited to 'drivers/mfd/asic3.c')
| -rw-r--r-- | drivers/mfd/asic3.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c index f2fb233b0ff3..3b870e7fb3e1 100644 --- a/drivers/mfd/asic3.c +++ b/drivers/mfd/asic3.c @@ -313,6 +313,7 @@ static int __init asic3_irq_probe(struct platform_device *pdev) struct asic3 *asic = platform_get_drvdata(pdev); unsigned long clksel = 0; unsigned int irq, irq_base; + int map_size; asic->irq_nr = platform_get_irq(pdev, 0); if (asic->irq_nr < 0) @@ -551,8 +552,8 @@ static int __init asic3_probe(struct platform_device *pdev) goto out_free; } - - asic->mapping = ioremap(mem->start, PAGE_SIZE); + map_size = mem->end - mem->start + 1; + asic->mapping = ioremap(mem->start, map_size); if (!asic->mapping) { ret = -ENOMEM; dev_err(asic->dev, "Couldn't ioremap\n"); @@ -561,10 +562,8 @@ static int __init asic3_probe(struct platform_device *pdev) asic->irq_base = pdata->irq_base; - if (pdata && pdata->bus_shift) - asic->bus_shift = 2 - pdata->bus_shift; - else - asic->bus_shift = 0; + /* calculate bus shift from mem resource */ + asic->bus_shift = 2 - (map_size >> 12); clksel = 0; asic3_write_register(asic, ASIC3_OFFSET(CLOCK, SEL), clksel); |