* Patches by Martin Krause, 14 Jul 2003:
- add I2C support for s3c2400 systems (trab board)
- (re-) add "ping" to command table
* Fix handling of "slow" POST routines
diff --git a/drivers/s3c24x0_i2c.c b/drivers/s3c24x0_i2c.c
index 76b9d95..4158b14 100644
--- a/drivers/s3c24x0_i2c.c
+++ b/drivers/s3c24x0_i2c.c
@@ -63,7 +63,12 @@
{
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+#ifdef CONFIG_S3C2410
return (gpio->GPEDAT & 0x8000) >> 15;
+#endif
+#ifdef CONFIG_S3C2400
+ return (gpio->PGDAT & 0x0020) >> 5;
+#endif
}
#if 0
@@ -77,7 +82,12 @@
{
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+#ifdef CONFIG_S3C2410
gpio->GPEDAT = (gpio->GPEDAT & ~0x4000) | (x&1) << 14;
+#endif
+#ifdef CONFIG_S3C2400
+ gpio->PGDAT = (gpio->PGDAT & ~0x0040) | (x&1) << 6;
+#endif
}
@@ -129,11 +139,22 @@
}
if ((status & I2CSTAT_BSY) || GetI2CSDA() == 0) {
+#ifdef CONFIG_S3C2410
ulong old_gpecon = gpio->GPECON;
+#endif
+#ifdef CONFIG_S3C2400
+ ulong old_gpecon = gpio->PGCON;
+#endif
/* bus still busy probably by (most) previously interrupted transfer */
+#ifdef CONFIG_S3C2410
/* set I2CSDA and I2CSCL (GPE15, GPE14) to GPIO */
gpio->GPECON = (gpio->GPECON & ~0xF0000000) | 0x10000000;
+#endif
+#ifdef CONFIG_S3C2400
+ /* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */
+ gpio->PGCON = (gpio->PGCON & ~0x00003c00) | 0x00000c00;
+#endif
/* toggle I2CSCL until bus idle */
SetI2CSCL(0); udelay(1000);
@@ -146,7 +167,12 @@
SetI2CSCL(1); udelay(1000);
/* restore pin functions */
+#ifdef CONFIG_S3C2410
gpio->GPECON = old_gpecon;
+#endif
+#ifdef CONFIG_S3C2400
+ gpio->PGCON = old_gpecon;
+#endif
}
/* calculate prescaler and divisor values */
