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Diffstat (limited to 'board/sandburst/common/ppc440gx_i2c.c')
-rw-r--r--board/sandburst/common/ppc440gx_i2c.c73
1 files changed, 38 insertions, 35 deletions
diff --git a/board/sandburst/common/ppc440gx_i2c.c b/board/sandburst/common/ppc440gx_i2c.c
index bc88e5a7eb..35c4e60b5a 100644
--- a/board/sandburst/common/ppc440gx_i2c.c
+++ b/board/sandburst/common/ppc440gx_i2c.c
@@ -31,6 +31,7 @@
#include <i2c.h>
#include <command.h>
#include "ppc440gx_i2c.h"
+#include <asm-ppc/io.h>
#ifdef CONFIG_I2C_BUS1
@@ -47,16 +48,18 @@
static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES;
#endif
+static struct ppc4xx_i2c *i2c = (struct ppc4xx_i2c *)I2C_REGISTERS_BUS1_BASE_ADDRESS;
+
static void _i2c_bus1_reset (void)
{
int i, status;
/* Reset status register */
/* write 1 in SCMP and IRQA to clear these fields */
- out8 (IIC_STS1, 0x0A);
+ out_8 (IIC_STS1, 0x0A);
/* write 1 in IRQP IRQD LA ICT XFRA to clear these fields */
- out8 (IIC_EXTSTS1, 0x8F);
+ out_8 (IIC_EXTSTS1, 0x8F);
__asm__ volatile ("eieio");
/*
@@ -66,36 +69,36 @@ static void _i2c_bus1_reset (void)
i = 10;
do {
/* Get status */
- status = in8 (IIC_STS1);
+ status = in_8 (IIC_STS1);
udelay (500); /* 500us */
i--;
} while ((status & IIC_STS_PT) && (i > 0));
/* Soft reset controller */
- status = in8 (IIC_XTCNTLSS1);
- out8 (IIC_XTCNTLSS1, (status | IIC_XTCNTLSS_SRST));
+ status = in_8 (IIC_XTCNTLSS1);
+ out_8 (IIC_XTCNTLSS1, (status | IIC_XTCNTLSS_SRST));
__asm__ volatile ("eieio");
/* make sure where in initial state, data hi, clock hi */
- out8 (IIC_DIRECTCNTL1, 0xC);
+ out_8 (IIC_DIRECTCNTL1, 0xC);
for (i = 0; i < 10; i++) {
- if ((in8 (IIC_DIRECTCNTL1) & 0x3) != 0x3) {
+ if ((in_8 (IIC_DIRECTCNTL1) & 0x3) != 0x3) {
/* clock until we get to known state */
- out8 (IIC_DIRECTCNTL1, 0x8); /* clock lo */
+ out_8 (IIC_DIRECTCNTL1, 0x8); /* clock lo */
udelay (100); /* 100us */
- out8 (IIC_DIRECTCNTL1, 0xC); /* clock hi */
+ out_8 (IIC_DIRECTCNTL1, 0xC); /* clock hi */
udelay (100); /* 100us */
} else {
break;
}
}
/* send start condition */
- out8 (IIC_DIRECTCNTL1, 0x4);
+ out_8 (IIC_DIRECTCNTL1, 0x4);
udelay (1000); /* 1ms */
/* send stop condition */
- out8 (IIC_DIRECTCNTL1, 0xC);
+ out_8 (IIC_DIRECTCNTL1, 0xC);
udelay (1000); /* 1ms */
/* Unreset controller */
- out8 (IIC_XTCNTLSS1, (status & ~IIC_XTCNTLSS_SRST));
+ out_8 (IIC_XTCNTLSS1, (status & ~IIC_XTCNTLSS_SRST));
udelay (1000); /* 1ms */
}
@@ -117,16 +120,16 @@ void i2c1_init (int speed, int slaveadd)
_i2c_bus1_reset ();
/* clear lo master address */
- out8 (IIC_LMADR1, 0);
+ out_8 (IIC_LMADR1, 0);
/* clear hi master address */
- out8 (IIC_HMADR1, 0);
+ out_8 (IIC_HMADR1, 0);
/* clear lo slave address */
- out8 (IIC_LSADR1, 0);
+ out_8 (IIC_LSADR1, 0);
/* clear hi slave address */
- out8 (IIC_HSADR1, 0);
+ out_8 (IIC_HSADR1, 0);
/* Clock divide Register */
/* get OPB frequency */
@@ -136,25 +139,25 @@ void i2c1_init (int speed, int slaveadd)
divisor = (freqOPB - 1) / 10000000;
if (divisor == 0)
divisor = 1;
- out8 (IIC_CLKDIV1, divisor);
+ out_8 (IIC_CLKDIV1, divisor);
/* no interrupts */
- out8 (IIC_INTRMSK1, 0);
+ out_8 (IIC_INTRMSK1, 0);
/* clear transfer count */
- out8 (IIC_XFRCNT1, 0);
+ out_8 (IIC_XFRCNT1, 0);
/* clear extended control & stat */
/* write 1 in SRC SRS SWC SWS to clear these fields */
- out8 (IIC_XTCNTLSS1, 0xF0);
+ out_8 (IIC_XTCNTLSS1, 0xF0);
/* Mode Control Register
Flush Slave/Master data buffer */
- out8 (IIC_MDCNTL1, IIC_MDCNTL_FSDB | IIC_MDCNTL_FMDB);
+ out_8 (IIC_MDCNTL1, IIC_MDCNTL_FSDB | IIC_MDCNTL_FMDB);
__asm__ volatile ("eieio");
- val = in8(IIC_MDCNTL1);
+ val = in_8(IIC_MDCNTL1);
__asm__ volatile ("eieio");
/* Ignore General Call, slave transfers are ignored,
@@ -167,10 +170,10 @@ void i2c1_init (int speed, int slaveadd)
if( speed >= 400000 ){
val |= IIC_MDCNTL_FSM;
}
- out8 (IIC_MDCNTL1, val);
+ out_8 (IIC_MDCNTL1, val);
/* clear control reg */
- out8 (IIC_CNTL1, 0x00);
+ out_8 (IIC_CNTL1, 0x00);
__asm__ volatile ("eieio");
}
@@ -178,7 +181,7 @@ void i2c1_init (int speed, int slaveadd)
/*
This code tries to use the features of the 405GP i2c
controller. It will transfer up to 4 bytes in one pass
- on the loop. It only does out8(lbz) to the buffer when it
+ on the loop. It only does out_8(lbz) to the buffer when it
is possible to do out16(lhz) transfers.
cmd_type is 0 for write 1 for read.
@@ -232,12 +235,12 @@ int i2c_transfer1(unsigned char cmd_type,
}
/*Clear Stop Complete Bit*/
- out8(IIC_STS1,IIC_STS_SCMP);
+ out_8(IIC_STS1,IIC_STS_SCMP);
/* Check init */
i=10;
do {
/* Get status */
- status = in8(IIC_STS1);
+ status = in_8(IIC_STS1);
__asm__ volatile("eieio");
i--;
} while ((status & IIC_STS_PT) && (i>0));
@@ -247,12 +250,12 @@ int i2c_transfer1(unsigned char cmd_type,
return(result);
}
/*flush the Master/Slave Databuffers*/
- out8(IIC_MDCNTL1, ((in8(IIC_MDCNTL1))|IIC_MDCNTL_FMDB|IIC_MDCNTL_FSDB));
+ out_8(IIC_MDCNTL1, ((in_8(IIC_MDCNTL1))|IIC_MDCNTL_FMDB|IIC_MDCNTL_FSDB));
/*need to wait 4 OPB clocks? code below should take that long*/
/* 7-bit adressing */
- out8(IIC_HMADR1,0);
- out8(IIC_LMADR1, chip);
+ out_8(IIC_HMADR1,0);
+ out_8(IIC_LMADR1, chip);
__asm__ volatile("eieio");
tran = 0;
@@ -280,11 +283,11 @@ int i2c_transfer1(unsigned char cmd_type,
else {
for(j=0; j<bc; j++) {
/* Set buffer */
- out8(IIC_MDBUF1,ptr[tran+j]);
+ out_8(IIC_MDBUF1,ptr[tran+j]);
__asm__ volatile("eieio");
}
}
- out8(IIC_CNTL1, creg );
+ out_8(IIC_CNTL1, creg );
__asm__ volatile("eieio");
/* Transfer is in progress
@@ -297,7 +300,7 @@ int i2c_transfer1(unsigned char cmd_type,
i=2*5*8;
do {
/* Get status */
- status = in8(IIC_STS1);
+ status = in_8(IIC_STS1);
__asm__ volatile("eieio");
udelay (10);
i--;
@@ -306,7 +309,7 @@ int i2c_transfer1(unsigned char cmd_type,
if (status & IIC_STS_ERR) {
result = IIC_NOK;
- status = in8 (IIC_EXTSTS1);
+ status = in_8 (IIC_EXTSTS1);
/* Lost arbitration? */
if (status & IIC_EXTSTS_LA)
result = IIC_NOK_LA;
@@ -331,7 +334,7 @@ int i2c_transfer1(unsigned char cmd_type,
*/
udelay (1);
for(j=0;j<bc;j++) {
- ptr[tran+j] = in8(IIC_MDBUF1);
+ ptr[tran+j] = in_8(IIC_MDBUF1);
__asm__ volatile("eieio");
}
} else
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 19:53:36 +0000