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[ARM] 5201/1: PXA3xx: Add support for power i2c bus

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Add power I2C support for PXA3xx processors

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Mike Rapoport
2008-08-17 06:23:05 +01:00
committed by Russell King
parent 57a7a62eb6
commit 9ba63c4fa1
5 changed files with 59 additions and 7 deletions
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12
drivers/i2c/busses/i2c-pxa.c
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@@ -60,6 +60,7 @@ struct pxa_i2c {
u32 icrlog[32];
void __iomem *reg_base;
unsigned int reg_shift;
unsigned long iobase;
unsigned long iosize;
@@ -68,11 +69,11 @@ struct pxa_i2c {
int use_pio;
};
#define _IBMR(i2c) ((i2c)->reg_base + 0)
#define _IDBR(i2c) ((i2c)->reg_base + 8)
#define _ICR(i2c) ((i2c)->reg_base + 0x10)
#define _ISR(i2c) ((i2c)->reg_base + 0x18)
#define _ISAR(i2c) ((i2c)->reg_base + 0x20)
#define _IBMR(i2c) ((i2c)->reg_base + (0x0 << (i2c)->reg_shift))
#define _IDBR(i2c) ((i2c)->reg_base + (0x4 << (i2c)->reg_shift))
#define _ICR(i2c) ((i2c)->reg_base + (0x8 << (i2c)->reg_shift))
#define _ISR(i2c) ((i2c)->reg_base + (0xc << (i2c)->reg_shift))
#define _ISAR(i2c) ((i2c)->reg_base + (0x10 << (i2c)->reg_shift))
/*
* I2C Slave mode address
@@ -993,6 +994,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
ret = -EIO;
goto eremap;
}
i2c->reg_shift = (cpu_is_pxa3xx() && (dev->id == 1)) ? 0 : 1;
i2c->iobase = res->start;
i2c->iosize = res_len(res);