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| author | Paul Mundt <lethal@linux-sh.org> | 2008-10-20 06:17:52 +0400 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-10-20 06:17:52 +0400 |
| commit | 4cb40f795af36b3deb743f6ccf6c3fd542c61c8d (patch) | |
| tree | db3d7519932549bf528f5b8e4cb8350356cd544d /drivers/i2c/busses/i2c-pca-isa.c | |
| parent | 79ed2a9216dd3cc35c4f2c5dbaddadb195af83ac (diff) | |
| parent | 0cfd81031a26717fe14380d18275f8e217571615 (diff) | |
| download | linux-4cb40f795af36b3deb743f6ccf6c3fd542c61c8d.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/kernel-parameters.txt
arch/sh/include/asm/elf.h
Diffstat (limited to 'drivers/i2c/busses/i2c-pca-isa.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-pca-isa.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c index a119784bae10..9eb76268ec78 100644 --- a/drivers/i2c/busses/i2c-pca-isa.c +++ b/drivers/i2c/busses/i2c-pca-isa.c @@ -36,8 +36,8 @@ #define DRIVER "i2c-pca-isa" #define IO_SIZE 4 -static unsigned long base = 0x330; -static int irq = 10; +static unsigned long base; +static int irq = -1; /* Data sheet recommends 59kHz for 100kHz operation due to variation * in the actual clock rate */ @@ -107,13 +107,26 @@ static struct i2c_adapter pca_isa_ops = { .timeout = 100, }; +static int __devinit pca_isa_match(struct device *dev, unsigned int id) +{ + int match = base != 0; + + if (match) { + if (irq <= -1) + dev_warn(dev, "Using polling mode (specify irq)\n"); + } else + dev_err(dev, "Please specify I/O base\n"); + + return match; +} + static int __devinit pca_isa_probe(struct device *dev, unsigned int id) { init_waitqueue_head(&pca_wait); dev_info(dev, "i/o base %#08lx. irq %d\n", base, irq); -#ifdef CONFIG_PPC_MERGE +#ifdef CONFIG_PPC if (check_legacy_ioport(base)) { dev_err(dev, "I/O address %#08lx is not available\n", base); goto out; @@ -153,7 +166,7 @@ static int __devexit pca_isa_remove(struct device *dev, unsigned int id) { i2c_del_adapter(&pca_isa_ops); - if (irq > 0) { + if (irq > -1) { disable_irq(irq); free_irq(irq, &pca_isa_ops); } @@ -163,6 +176,7 @@ static int __devexit pca_isa_remove(struct device *dev, unsigned int id) } static struct isa_driver pca_isa_driver = { + .match = pca_isa_match, .probe = pca_isa_probe, .remove = __devexit_p(pca_isa_remove), .driver = { |