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savagefb: rework i2c bit access 

Use already defined VGAwCR/VGArCR functions to access the i2c bus.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Antonino A. Daplas 2007-05-08 00:38:34 -07:00 committed by Linus Torvalds
parent 7dfe50b3aa
commit f7829158bc
1 changed files with 8 additions and 14 deletions
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22
drivers/video/savage/savagefb-i2c.c
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@ -41,10 +41,6 @@
#define SAVAGE4_I2C_SCL_IN 0x00000008
#define SAVAGE4_I2C_SDA_IN 0x00000010
#define SET_CR_IX(base, val) writeb((val), base + 0x8000 + VGA_CR_IX)
#define SET_CR_DATA(base, val) writeb((val), base + 0x8000 + VGA_CR_DATA)
#define GET_CR_DATA(base) readb(base + 0x8000 + VGA_CR_DATA)
static void savage4_gpio_setscl(void *data, int val)
{
struct savagefb_i2c_chan *chan = data;
@ -92,15 +88,15 @@ static void prosavage_gpio_setscl(void* data, int val)
struct savagefb_i2c_chan *chan = data;
u32 r;
SET_CR_IX(chan->ioaddr, chan->reg);
r = GET_CR_DATA(chan->ioaddr);
r = VGArCR(chan->reg, chan->par);
r |= PROSAVAGE_I2C_ENAB;
if (val) {
r |= PROSAVAGE_I2C_SCL_OUT;
} else {
r &= ~PROSAVAGE_I2C_SCL_OUT;
}
SET_CR_DATA(chan->ioaddr, r);
VGAwCR(chan->reg, r, chan->par);
}
static void prosavage_gpio_setsda(void* data, int val)
@ -108,31 +104,29 @@ static void prosavage_gpio_setsda(void* data, int val)
struct savagefb_i2c_chan *chan = data;
unsigned int r;
SET_CR_IX(chan->ioaddr, chan->reg);
r = GET_CR_DATA(chan->ioaddr);
r = VGArCR(chan->reg, chan->par);
r |= PROSAVAGE_I2C_ENAB;
if (val) {
r |= PROSAVAGE_I2C_SDA_OUT;
} else {
r &= ~PROSAVAGE_I2C_SDA_OUT;
}
SET_CR_DATA(chan->ioaddr, r);
VGAwCR(chan->reg, r, chan->par);
}
static int prosavage_gpio_getscl(void* data)
{
struct savagefb_i2c_chan *chan = data;
SET_CR_IX(chan->ioaddr, chan->reg);
return (0 != (GET_CR_DATA(chan->ioaddr) & PROSAVAGE_I2C_SCL_IN));
return (VGArCR(chan->reg, chan->par) & PROSAVAGE_I2C_SCL_IN) ? 1 : 0;
}
static int prosavage_gpio_getsda(void* data)
{
struct savagefb_i2c_chan *chan = data;
SET_CR_IX(chan->ioaddr, chan->reg);
return (0 != (GET_CR_DATA(chan->ioaddr) & PROSAVAGE_I2C_SDA_IN));
return (VGArCR(chan->reg, chan->par) & PROSAVAGE_I2C_SDA_IN) ? 1 : 0;
}
static int savage_setup_i2c_bus(struct savagefb_i2c_chan *chan,