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Merge branch 'master' of git://git.denx.de/u-boot-ppc4xx

This commit is contained in:
Wolfgang Denk 2010-01-03 21:07:04 +01:00
parent 87d93a1ba2 be34fef7fd
commit 6ca9da4d42
3 changed files with 53 additions and 52 deletions
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73
board/sandburst/common/ppc440gx_i2c.c
View File

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

30
board/sandburst/common/ppc440gx_i2c.h
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@ -34,21 +34,21 @@
#define I2C_BUS1_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000500) #define I2C_BUS1_BASE_ADDR (CONFIG_SYS_PERIPHERAL_BASE + 0x00000500)
#define I2C_REGISTERS_BUS1_BASE_ADDRESS I2C_BUS1_BASE_ADDR #define I2C_REGISTERS_BUS1_BASE_ADDRESS I2C_BUS1_BASE_ADDR
#define IIC_MDBUF1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICMDBUF) #define IIC_MDBUF1 (&i2c->mdbuf)
#define IIC_SDBUF1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICSDBUF) #define IIC_SDBUF1 (&i2c->sdbuf)
#define IIC_LMADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICLMADR) #define IIC_LMADR1 (&i2c->lmadr)
#define IIC_HMADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICHMADR) #define IIC_HMADR1 (&i2c->hmadr)
#define IIC_CNTL1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICCNTL) #define IIC_CNTL1 (&i2c->cntl)
#define IIC_MDCNTL1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICMDCNTL) #define IIC_MDCNTL1 (&i2c->mdcntl)
#define IIC_STS1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICSTS) #define IIC_STS1 (&i2c->sts)
#define IIC_EXTSTS1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICEXTSTS) #define IIC_EXTSTS1 (&i2c->extsts)
#define IIC_LSADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICLSADR) #define IIC_LSADR1 (&i2c->lsadr)
#define IIC_HSADR1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICHSADR) #define IIC_HSADR1 (&i2c->hsadr)
#define IIC_CLKDIV1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IIC0_CLKDIV) #define IIC_CLKDIV1 (&i2c->clkdiv)
#define IIC_INTRMSK1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICINTRMSK) #define IIC_INTRMSK1 (&i2c->intrmsk)
#define IIC_XFRCNT1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICXFRCNT) #define IIC_XFRCNT1 (&i2c->xfrcnt)
#define IIC_XTCNTLSS1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICXTCNTLSS) #define IIC_XTCNTLSS1 (&i2c->xtcntlss)
#define IIC_DIRECTCNTL1 (I2C_REGISTERS_BUS1_BASE_ADDRESS+IICDIRECTCNTL) #define IIC_DIRECTCNTL1 (&i2c->directcntl)
void i2c1_init (int speed, int slaveadd); void i2c1_init (int speed, int slaveadd);
int i2c_probe1 (uchar chip); int i2c_probe1 (uchar chip);

2
include/configs/alpr.h
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@ -232,7 +232,6 @@
#include <config_cmd_default.h> #include <config_cmd_default.h>
#define CONFIG_CMD_DHCP #define CONFIG_CMD_DHCP
#define CONFIG_CMD_DIAG
#define CONFIG_CMD_EEPROM #define CONFIG_CMD_EEPROM
#define CONFIG_CMD_FPGA #define CONFIG_CMD_FPGA
#define CONFIG_CMD_I2C #define CONFIG_CMD_I2C
@ -240,7 +239,6 @@
#define CONFIG_CMD_NAND #define CONFIG_CMD_NAND
#define CONFIG_CMD_NET #define CONFIG_CMD_NET
#define CONFIG_CMD_PCI #define CONFIG_CMD_PCI
#define CONFIG_CMD_PING
#undef CONFIG_CMD_NFS #undef CONFIG_CMD_NFS
#undef CONFIG_WATCHDOG /* watchdog disabled */ #undef CONFIG_WATCHDOG /* watchdog disabled */