[U-Boot] [PATCH] [for next] i2c, ppc4xx: fix compiling KAREF and METROBOX boards.
Heiko Schocher
hs at denx.de
Thu Dec 3 11:23:17 CET 2009
commit eb5eb2b0f744f0cba405160c5d01335c40f09acf
ppc4xx: Cleanup PPC4xx I2C infrastructure
This patch cleans up the PPC4xx I2C intrastructure:
- Use C struct to describe the I2C registers instead of defines
- Coding style cleanup (braces, whitespace, comments, line length)
- Extract common code from i2c_read() and i2c_write()
- Remove unneeded IIC defines from ppc405.h & ppc440.h
breaks comiling for the KAREF and METROBOX boards.
This patch fixes this issue.
Signed-off-by: Heiko Schocher <hs at denx.de>
---
based against git://git.denx.de/u-boot.git next
board/sandburst/common/ppc440gx_i2c.c | 73 +++++++++++++++++----------------
board/sandburst/common/ppc440gx_i2c.h | 30 +++++++-------
2 files changed, 53 insertions(+), 50 deletions(-)
diff --git a/board/sandburst/common/ppc440gx_i2c.c b/board/sandburst/common/ppc440gx_i2c.c
index bc88e5a..35c4e60 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
diff --git a/board/sandburst/common/ppc440gx_i2c.h b/board/sandburst/common/ppc440gx_i2c.h
index 90f27ca..0676c0e 100644
--- a/board/sandburst/common/ppc440gx_i2c.h
+++ b/board/sandburst/common/ppc440gx_i2c.h
@@ -34,21 +34,21 @@
#define I2C_BUS1_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000500)
#define I2C_REGISTERS_BUS1_BASE_ADDRESS I2C_BUS1_BASE_ADDR
-#define IIC_MDBUF1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICMDBUF)
-#define IIC_SDBUF1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICSDBUF)
-#define IIC_LMADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICLMADR)
-#define IIC_HMADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICHMADR)
-#define IIC_CNTL1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICCNTL)
-#define IIC_MDCNTL1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICMDCNTL)
-#define IIC_STS1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICSTS)
-#define IIC_EXTSTS1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICEXTSTS)
-#define IIC_LSADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICLSADR)
-#define IIC_HSADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICHSADR)
-#define IIC_CLKDIV1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IIC0_CLKDIV)
-#define IIC_INTRMSK1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICINTRMSK)
-#define IIC_XFRCNT1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICXFRCNT)
-#define IIC_XTCNTLSS1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICXTCNTLSS)
-#define IIC_DIRECTCNTL1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICDIRECTCNTL)
+#define IIC_MDBUF1 (&i2c->mdbuf)
+#define IIC_SDBUF1 (&i2c->sdbuf)
+#define IIC_LMADR1 (&i2c->lmadr)
+#define IIC_HMADR1 (&i2c->hmadr)
+#define IIC_CNTL1 (&i2c->cntl)
+#define IIC_MDCNTL1 (&i2c->mdcntl)
+#define IIC_STS1 (&i2c->sts)
+#define IIC_EXTSTS1 (&i2c->extsts)
+#define IIC_LSADR1 (&i2c->lsadr)
+#define IIC_HSADR1 (&i2c->hsadr)
+#define IIC_CLKDIV1 (&i2c->clkdiv)
+#define IIC_INTRMSK1 (&i2c->intrmsk)
+#define IIC_XFRCNT1 (&i2c->xfrcnt)
+#define IIC_XTCNTLSS1 (&i2c->xtcntlss)
+#define IIC_DIRECTCNTL1 (&i2c->directcntl)
void i2c1_init (int speed, int slaveadd);
int i2c_probe1 (uchar chip);
--
1.6.2.5
--
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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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