Merge branch 'master' of git://git.denx.de/u-boot-i2c

The sandburst-specific i2c drivers have been deleted, conflict was just
over the SPDX conversion.

Conflicts:
	board/sandburst/common/ppc440gx_i2c.c
	board/sandburst/common/ppc440gx_i2c.h

Signed-off-by: Tom Rini <trini@ti.com>

1 files changed, 0 insertions, 494 deletions

diff --git a/board/sandburst/common/ppc440gx_i2c.c b/board/sandburst/common/ppc440gx_i2c.c
deleted file mode 100644
index 1d7f17c..0000000
--- a/board/sandburst/common/ppc440gx_i2c.c
+++ /dev/null
@@ -1,494 +0,0 @@
-/*
- *  Copyright (C) 2005 Sandburst Corporation
- *
- * SPDX-License-Identifier:	GPL-2.0+ 
- */
-
-/*
- * Ported from arch/powerpc/cpu/ppc4xx/i2c.c by AS HARNOIS by
- * Travis B. Sawyer
- * Sandburst Corporation.
- */
-#include <common.h>
-#include <asm/ppc4xx.h>
-#include <asm/ppc4xx-i2c.h>
-#include <i2c.h>
-#include <command.h>
-#include "ppc440gx_i2c.h"
-#include <asm/io.h>
-
-#ifdef CONFIG_I2C_BUS1
-
-#define IIC_OK		0
-#define IIC_NOK		1
-#define IIC_NOK_LA	2		/* Lost arbitration */
-#define IIC_NOK_ICT	3		/* Incomplete transfer */
-#define IIC_NOK_XFRA	4		/* Transfer aborted */
-#define IIC_NOK_DATA	5		/* No data in buffer */
-#define IIC_NOK_TOUT	6		/* Transfer timeout */
-
-#define IIC_TIMEOUT 1			/* 1 second */
-#if defined(CONFIG_SYS_I2C_NOPROBES)
-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 */
-	out_8 (IIC_STS1, 0x0A);
-
-	/* write 1 in IRQP IRQD LA ICT XFRA to clear these fields */
-	out_8 (IIC_EXTSTS1, 0x8F);
-	__asm__ volatile ("eieio");
-
-	/*
-	 * Get current state, reset bus
-	 * only if no transfers are pending.
-	 */
-	i = 10;
-	do {
-		/* Get status */
-		status = in_8 (IIC_STS1);
-		udelay (500);			/* 500us */
-		i--;
-	} while ((status & IIC_STS_PT) && (i > 0));
-	/* Soft reset controller */
-	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 */
-	out_8 (IIC_DIRECTCNTL1, 0xC);
-	for (i = 0; i < 10; i++) {
-		if ((in_8 (IIC_DIRECTCNTL1) & 0x3) != 0x3) {
-			/* clock until we get to known state */
-			out_8 (IIC_DIRECTCNTL1, 0x8);	/* clock lo */
-			udelay (100);		/* 100us */
-			out_8 (IIC_DIRECTCNTL1, 0xC);	/* clock hi */
-			udelay (100);		/* 100us */
-		} else {
-			break;
-		}
-	}
-	/* send start condition */
-	out_8 (IIC_DIRECTCNTL1, 0x4);
-	udelay (1000);				/* 1ms */
-	/* send stop condition */
-	out_8 (IIC_DIRECTCNTL1, 0xC);
-	udelay (1000);				/* 1ms */
-	/* Unreset controller */
-	out_8 (IIC_XTCNTLSS1, (status & ~IIC_XTCNTLSS_SRST));
-	udelay (1000);				/* 1ms */
-}
-
-void i2c1_init (int speed, int slaveadd)
-{
-	sys_info_t sysInfo;
-	unsigned long freqOPB;
-	int val, divisor;
-
-#ifdef CONFIG_SYS_I2C_INIT_BOARD
-	/* call board specific i2c bus reset routine before accessing the   */
-	/* environment, which might be in a chip on that bus. For details   */
-	/* about this problem see doc/I2C_Edge_Conditions.                  */
-	i2c_init_board();
-#endif
-
-	/* Handle possible failed I2C state */
-	/* FIXME: put this into i2c_init_board()? */
-	_i2c_bus1_reset ();
-
-	/* clear lo master address */
-	out_8 (IIC_LMADR1, 0);
-
-	/* clear hi master address */
-	out_8 (IIC_HMADR1, 0);
-
-	/* clear lo slave address */
-	out_8 (IIC_LSADR1, 0);
-
-	/* clear hi slave address */
-	out_8 (IIC_HSADR1, 0);
-
-	/* Clock divide Register */
-	/* get OPB frequency */
-	get_sys_info (&sysInfo);
-	freqOPB = sysInfo.freqPLB / sysInfo.pllOpbDiv;
-	/* set divisor according to freqOPB */
-	divisor = (freqOPB - 1) / 10000000;
-	if (divisor == 0)
-		divisor = 1;
-	out_8 (IIC_CLKDIV1, divisor);
-
-	/* no interrupts */
-	out_8 (IIC_INTRMSK1, 0);
-
-	/* clear transfer count */
-	out_8 (IIC_XFRCNT1, 0);
-
-	/* clear extended control & stat */
-	/* write 1 in SRC SRS SWC SWS to clear these fields */
-	out_8 (IIC_XTCNTLSS1, 0xF0);
-
-	/* Mode Control Register
-	   Flush Slave/Master data buffer */
-	out_8 (IIC_MDCNTL1, IIC_MDCNTL_FSDB | IIC_MDCNTL_FMDB);
-	__asm__ volatile ("eieio");
-
-
-	val = in_8(IIC_MDCNTL1);
-	__asm__ volatile ("eieio");
-
-	/* Ignore General Call, slave transfers are ignored,
-	   disable interrupts, exit unknown bus state, enable hold
-	   SCL
-	   100kHz normaly or FastMode for 400kHz and above
-	*/
-
-	val |= IIC_MDCNTL_EUBS|IIC_MDCNTL_HSCL;
-	if( speed >= 400000 ){
-		val |= IIC_MDCNTL_FSM;
-	}
-	out_8 (IIC_MDCNTL1, val);
-
-	/* clear control reg */
-	out_8 (IIC_CNTL1, 0x00);
-	__asm__ volatile ("eieio");
-
-}
-
-/*
-  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 out_8(lbz) to the buffer when it
-  is possible to do out16(lhz) transfers.
-
-  cmd_type is 0 for write 1 for read.
-
-  addr_len can take any value from 0-255, it is only limited
-  by the char, we could make it larger if needed. If it is
-  0 we skip the address write cycle.
-
-  Typical case is a Write of an addr followd by a Read. The
-  IBM FAQ does not cover this. On the last byte of the write
-  we don't set the creg CHT bit, and on the first bytes of the
-  read we set the RPST bit.
-
-  It does not support address only transfers, there must be
-  a data part. If you want to write the address yourself, put
-  it in the data pointer.
-
-  It does not support transfer to/from address 0.
-
-  It does not check XFRCNT.
-*/
-static
-int i2c_transfer1(unsigned char cmd_type,
-		  unsigned char chip,
-		  unsigned char addr[],
-		  unsigned char addr_len,
-		  unsigned char data[],
-		  unsigned short data_len )
-{
-	unsigned char* ptr;
-	int reading;
-	int tran,cnt;
-	int result;
-	int status;
-	int i;
-	uchar creg;
-
-	if( data == 0 || data_len == 0 ){
-		/*Don't support data transfer of no length or to address 0*/
-		printf( "i2c_transfer: bad call\n" );
-		return IIC_NOK;
-	}
-	if( addr && addr_len ){
-		ptr = addr;
-		cnt = addr_len;
-		reading = 0;
-	}else{
-		ptr = data;
-		cnt = data_len;
-		reading = cmd_type;
-	}
-
-	/*Clear Stop Complete Bit*/
-	out_8(IIC_STS1,IIC_STS_SCMP);
-	/* Check init */
-	i=10;
-	do {
-		/* Get status */
-		status = in_8(IIC_STS1);
-		__asm__ volatile("eieio");
-		i--;
-	} while ((status & IIC_STS_PT) && (i>0));
-
-	if (status & IIC_STS_PT) {
-		result = IIC_NOK_TOUT;
-		return(result);
-	}
-	/*flush the Master/Slave Databuffers*/
-	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 */
-	out_8(IIC_HMADR1,0);
-	out_8(IIC_LMADR1, chip);
-	__asm__ volatile("eieio");
-
-	tran = 0;
-	result = IIC_OK;
-	creg = 0;
-
-	while ( tran != cnt && (result == IIC_OK)) {
-		int  bc,j;
-
-		/* Control register =
-		   Normal transfer, 7-bits adressing, Transfer up to bc bytes, Normal start,
-		   Transfer is a sequence of transfers
-		*/
-		creg |= IIC_CNTL_PT;
-
-		bc = (cnt - tran) > 4 ? 4 :
-			cnt - tran;
-		creg |= (bc-1)<<4;
-		/* if the real cmd type is write continue trans*/
-		if ( (!cmd_type && (ptr == addr)) || ((tran+bc) != cnt) )
-			creg |= IIC_CNTL_CHT;
-
-		if (reading)
-			creg |= IIC_CNTL_READ;
-		else {
-			for(j=0; j<bc; j++) {
-				/* Set buffer */
-				out_8(IIC_MDBUF1,ptr[tran+j]);
-				__asm__ volatile("eieio");
-			}
-		}
-		out_8(IIC_CNTL1, creg );
-		__asm__ volatile("eieio");
-
-		/* Transfer is in progress
-		   we have to wait for upto 5 bytes of data
-		   1 byte chip address+r/w bit then bc bytes
-		   of data.
-		   udelay(10) is 1 bit time at 100khz
-		   Doubled for slop. 20 is too small.
-		*/
-		i=2*5*8;
-		do {
-			/* Get status */
-			status = in_8(IIC_STS1);
-			__asm__ volatile("eieio");
-			udelay (10);
-			i--;
-		} while ((status & IIC_STS_PT) && !(status & IIC_STS_ERR)
-			 && (i>0));
-
-		if (status & IIC_STS_ERR) {
-			result = IIC_NOK;
-			status = in_8 (IIC_EXTSTS1);
-			/* Lost arbitration? */
-			if (status & IIC_EXTSTS_LA)
-				result = IIC_NOK_LA;
-			/* Incomplete transfer? */
-			if (status & IIC_EXTSTS_ICT)
-				result = IIC_NOK_ICT;
-			/* Transfer aborted? */
-			if (status & IIC_EXTSTS_XFRA)
-				result = IIC_NOK_XFRA;
-		} else if ( status & IIC_STS_PT) {
-			result = IIC_NOK_TOUT;
-		}
-		/* Command is reading => get buffer */
-		if ((reading) && (result == IIC_OK)) {
-			/* Are there data in buffer */
-			if (status & IIC_STS_MDBS) {
-				/*
-				  even if we have data we have to wait 4OPB clocks
-				  for it to hit the front of the FIFO, after that
-				  we can just read. We should check XFCNT here and
-				  if the FIFO is full there is no need to wait.
-				*/
-				udelay (1);
-				for(j=0;j<bc;j++) {
-					ptr[tran+j] = in_8(IIC_MDBUF1);
-					__asm__ volatile("eieio");
-				}
-			} else
-				result = IIC_NOK_DATA;
-		}
-		creg = 0;
-		tran+=bc;
-		if( ptr == addr && tran == cnt ) {
-			ptr = data;
-			cnt = data_len;
-			tran = 0;
-			reading = cmd_type;
-			if( reading )
-				creg = IIC_CNTL_RPST;
-		}
-	}
-	return (result);
-}
-
-int i2c_probe1 (uchar chip)
-{
-	uchar buf[1];
-
-	buf[0] = 0;
-
-	/*
-	 * What is needed is to send the chip address and verify that the
-	 * address was <ACK>ed (i.e. there was a chip at that address which
-	 * drove the data line low).
-	 */
-	return(i2c_transfer1 (1, chip << 1, 0,0, buf, 1) != 0);
-}
-
-
-int i2c_read1 (uchar chip, uint addr, int alen, uchar * buffer, int len)
-{
-	uchar xaddr[4];
-	int ret;
-
-	if ( alen > 4 ) {
-		printf ("I2C read: addr len %d not supported\n", alen);
-		return 1;
-	}
-
-	if ( alen > 0 ) {
-		xaddr[0] = (addr >> 24) & 0xFF;
-		xaddr[1] = (addr >> 16) & 0xFF;
-		xaddr[2] = (addr >> 8) & 0xFF;
-		xaddr[3] = addr & 0xFF;
-	}
-
-
-#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW
-	/*
-	 * EEPROM chips that implement "address overflow" are ones
-	 * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
-	 * address and the extra bits end up in the "chip address"
-	 * bit slots. This makes a 24WC08 (1Kbyte) chip look like
-	 * four 256 byte chips.
-	 *
-	 * Note that we consider the length of the address field to
-	 * still be one byte because the extra address bits are
-	 * hidden in the chip address.
-	 */
-	if( alen > 0 )
-		chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
-#endif
-	if( (ret = i2c_transfer1( 1, chip<<1, &xaddr[4-alen], alen, buffer, len )) != 0) {
-		printf( "I2c read: failed %d\n", ret);
-		return 1;
-	}
-	return 0;
-}
-
-int i2c_write1 (uchar chip, uint addr, int alen, uchar * buffer, int len)
-{
-	uchar xaddr[4];
-
-	if ( alen > 4 ) {
-		printf ("I2C write: addr len %d not supported\n", alen);
-		return 1;
-
-	}
-	if ( alen > 0 ) {
-		xaddr[0] = (addr >> 24) & 0xFF;
-		xaddr[1] = (addr >> 16) & 0xFF;
-		xaddr[2] = (addr >> 8) & 0xFF;
-		xaddr[3] = addr & 0xFF;
-	}
-
-#ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW
-	/*
-	 * EEPROM chips that implement "address overflow" are ones
-	 * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
-	 * address and the extra bits end up in the "chip address"
-	 * bit slots. This makes a 24WC08 (1Kbyte) chip look like
-	 * four 256 byte chips.
-	 *
-	 * Note that we consider the length of the address field to
-	 * still be one byte because the extra address bits are
-	 * hidden in the chip address.
-	 */
-	if( alen > 0 )
-		chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
-#endif
-
-	return (i2c_transfer1( 0, chip<<1, &xaddr[4-alen], alen, buffer, len ) != 0);
-}
-
-/*-----------------------------------------------------------------------
- * Read a register
- */
-uchar i2c_reg_read1(uchar i2c_addr, uchar reg)
-{
-	uchar buf;
-
-	i2c_read1(i2c_addr, reg, 1, &buf, (uchar)1);
-
-	return(buf);
-}
-
-/*-----------------------------------------------------------------------
- * Write a register
- */
-void i2c_reg_write1(uchar i2c_addr, uchar reg, uchar val)
-{
-	i2c_write1(i2c_addr, reg, 1, &val, 1);
-}
-
-
-int do_i2c1_probe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
-	int j;
-#if defined(CONFIG_SYS_I2C_NOPROBES)
-	int k, skip;
-#endif
-
-	puts ("Valid chip addresses:");
-	for(j = 0; j < 128; j++) {
-#if defined(CONFIG_SYS_I2C_NOPROBES)
-		skip = 0;
-		for (k = 0; k < sizeof(i2c_no_probes); k++){
-			if (j == i2c_no_probes[k]){
-				skip = 1;
-				break;
-			}
-		}
-		if (skip)
-			continue;
-#endif
-		if(i2c_probe1(j) == 0) {
-			printf(" %02X", j);
-		}
-	}
-	putc ('\n');
-
-#if defined(CONFIG_SYS_I2C_NOPROBES)
-	puts ("Excluded chip addresses:");
-	for( k = 0; k < sizeof(i2c_no_probes); k++ )
-		printf(" %02X", i2c_no_probes[k] );
-	putc ('\n');
-#endif
-
-	return 0;
-}
-
-U_BOOT_CMD(
-	iprobe1,	1,	1,	do_i2c1_probe,
-	"probe to discover valid I2C chip addresses",
-	""
-);
-
-#endif	/* CONFIG_I2C_BUS1 */