* Patch by Sangmoon Kim, 23 Sep 2003:

  fix pll_pci_to_mem_multiplier table for MPC8245

* Patch by Anders Larsen, 22 Sep 2003:
  enable timed autoboot on PXA

* Patch by David Müller, 22 Sep 2003:

  - add $(CFLAGS) to "-print-libgcc-filename" so compiler driver
    returns correct libgcc file path
  - "latency" reduction of busy-loop waiting to improve "U-Boot" boot
    time on s3c24x0 systems

* Patch by Jon Diekema, 19 Sep 2003:
  - Add CFG_FAULT_ECHO_LINK_DOWN option to echo the inverted Ethernet
    link state to the fault LED.
  - In NetLoop, make the Fault LED reflect the link status.  The link
    status gets updated on entry, and on timeouts.

1 files changed, 264 insertions, 266 deletions

diff --git a/drivers/s3c24x0_i2c.c b/drivers/s3c24x0_i2c.c
index 2c27cb5..ef56cd1 100644
--- a/drivers/s3c24x0_i2c.c
+++ b/drivers/s3c24x0_i2c.c
@@ -91,359 +91,357 @@ static void SetI2CSCL(int x)
 }
 
 
-static int WaitForXfer(void)
+static int WaitForXfer (void)
 {
-    S3C24X0_I2C * const i2c = S3C24X0_GetBase_I2C();
-    int i, status;
+	S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+	int i, status;
 
-    i = I2C_TIMEOUT * 1000;
-    status = i2c->IICCON;
-    while ((i > 0) && !(status & I2CCON_IRPND)) {
-	udelay(1000);
+	i = I2C_TIMEOUT * 10000;
 	status = i2c->IICCON;
-	i--;
-    }
+	while ((i > 0) && !(status & I2CCON_IRPND)) {
+		udelay (100);
+		status = i2c->IICCON;
+		i--;
+	}
 
-    return(status & I2CCON_IRPND) ? I2C_OK : I2C_NOK_TOUT;
+	return (status & I2CCON_IRPND) ? I2C_OK : I2C_NOK_TOUT;
 }
 
-static int IsACK(void)
+static int IsACK (void)
 {
-    S3C24X0_I2C * const i2c = S3C24X0_GetBase_I2C();
+	S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
 
-    return(!(i2c->IICSTAT & I2CSTAT_NACK));
+	return (!(i2c->IICSTAT & I2CSTAT_NACK));
 }
 
-static void ReadWriteByte(void)
+static void ReadWriteByte (void)
 {
-    S3C24X0_I2C * const i2c = S3C24X0_GetBase_I2C();
+	S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
 
-    i2c->IICCON &= ~I2CCON_IRPND;
+	i2c->IICCON &= ~I2CCON_IRPND;
 }
 
 void i2c_init (int speed, int slaveadd)
 {
-    S3C24X0_I2C * const i2c = S3C24X0_GetBase_I2C();
-    S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
-    ulong freq, pres = 16, div;
-    int i, status;
+	S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+	S3C24X0_GPIO *const gpio = S3C24X0_GetBase_GPIO ();
+	ulong freq, pres = 16, div;
+	int i, status;
 
-    /* wait for some time to give previous transfer a chance to finish */
+	/* wait for some time to give previous transfer a chance to finish */
 
-    i = I2C_TIMEOUT * 1000;
-    status = i2c->IICSTAT;
-    while ((i > 0) && (status & I2CSTAT_BSY)) {
-	udelay(1000);
+	i = I2C_TIMEOUT * 1000;
 	status = i2c->IICSTAT;
-	i--;
-    }
+	while ((i > 0) && (status & I2CSTAT_BSY)) {
+		udelay (1000);
+		status = i2c->IICSTAT;
+		i--;
+	}
 
-    if ((status & I2CSTAT_BSY) || GetI2CSDA() == 0) {
+	if ((status & I2CSTAT_BSY) || GetI2CSDA () == 0) {
 #ifdef CONFIG_S3C2410
-	ulong old_gpecon = gpio->GPECON;
+		ulong old_gpecon = gpio->GPECON;
 #endif
 #ifdef CONFIG_S3C2400
-	ulong old_gpecon = gpio->PGCON;
+		ulong old_gpecon = gpio->PGCON;
 #endif
-	/* bus still busy probably by (most) previously interrupted transfer */
+		/* 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;
+		/* 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;
+		/* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */
+		gpio->PGCON = (gpio->PGCON & ~0x00003c00) | 0x00000c00;
 #endif
 
-	/* toggle I2CSCL until bus idle */
-	SetI2CSCL(0); udelay(1000);
-	i = 10;
-	while ((i > 0) && (GetI2CSDA() != 1)) {
-		SetI2CSCL(1); udelay(1000);
-		SetI2CSCL(0); udelay(1000);
-		i--;
-	}
-	SetI2CSCL(1); udelay(1000);
+		/* toggle I2CSCL until bus idle */
+		SetI2CSCL (0);
+		udelay (1000);
+		i = 10;
+		while ((i > 0) && (GetI2CSDA () != 1)) {
+			SetI2CSCL (1);
+			udelay (1000);
+			SetI2CSCL (0);
+			udelay (1000);
+			i--;
+		}
+		SetI2CSCL (1);
+		udelay (1000);
 
-	/* restore pin functions */
+		/* restore pin functions */
 #ifdef CONFIG_S3C2410
-	gpio->GPECON = old_gpecon;
+		gpio->GPECON = old_gpecon;
 #endif
 #ifdef CONFIG_S3C2400
-	gpio->PGCON = old_gpecon;
+		gpio->PGCON = old_gpecon;
 #endif
-    }
+	}
 
-    /* calculate prescaler and divisor values */
-    freq = get_PCLK();
-    if ((freq / pres / (16+1)) > speed)
-	/* set prescaler to 512 */
-	pres = 512;
+	/* calculate prescaler and divisor values */
+	freq = get_PCLK ();
+	if ((freq / pres / (16 + 1)) > speed)
+		/* set prescaler to 512 */
+		pres = 512;
 
-    div = 0;
-    while ((freq / pres / (div+1)) > speed)
-	div++;
+	div = 0;
+	while ((freq / pres / (div + 1)) > speed)
+		div++;
 
-    /* set prescaler, divisor according to freq, also set
-       ACKGEN, IRQ */
-    i2c->IICCON = (div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0);
+	/* set prescaler, divisor according to freq, also set
+	 * ACKGEN, IRQ */
+	i2c->IICCON = (div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0);
 
-    /* init to SLAVE REVEIVE and set slaveaddr */
-    i2c->IICSTAT = 0;
-    i2c->IICADD = slaveadd;
-    /* program Master Transmit (and implicit STOP) */
-    i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA;
+	/* init to SLAVE REVEIVE and set slaveaddr */
+	i2c->IICSTAT = 0;
+	i2c->IICADD = slaveadd;
+	/* program Master Transmit (and implicit STOP) */
+	i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA;
 
 }
 
 /*
-  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.
-
-*/
+ * 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.
+ */
 static
-int i2c_transfer(unsigned char cmd_type,
-		 unsigned char chip,
-		 unsigned char addr[],
-		 unsigned char addr_len,
-		 unsigned char data[],
-		 unsigned short data_len)
+int i2c_transfer (unsigned char cmd_type,
+		  unsigned char chip,
+		  unsigned char addr[],
+		  unsigned char addr_len,
+		  unsigned char data[], unsigned short data_len)
 {
-    S3C24X0_I2C * const i2c = S3C24X0_GetBase_I2C();
-    int i, status, result;
-
-    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 I2C_NOK;
-    }
-
-    /*CheckDelay(); */
-
-    /* Check I2C bus idle */
-    i = I2C_TIMEOUT * 1000;
-    status = i2c->IICSTAT;
-    while ((i > 0) && (status & I2CSTAT_BSY)) {
-	udelay(1000);
-	status = i2c->IICSTAT;
-	i--;
-    }
+	S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+	int i, status, result;
 
+	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 I2C_NOK;
+	}
 
-    if (status & I2CSTAT_BSY) {
-	result = I2C_NOK_TOUT;
-	return(result);
-    }
+	/* Check I2C bus idle */
+	i = I2C_TIMEOUT * 1000;
+	status = i2c->IICSTAT;
+	while ((i > 0) && (status & I2CSTAT_BSY)) {
+		udelay (1000);
+		status = i2c->IICSTAT;
+		i--;
+	}
 
-    i2c->IICCON |= 0x80;
+	if (status & I2CSTAT_BSY)
+		return I2C_NOK_TOUT;
 
-    result = I2C_OK;
+	i2c->IICCON |= 0x80;
+	result = I2C_OK;
 
-    switch (cmd_type) {
+	switch (cmd_type) {
 	case I2C_WRITE:
-	    if (addr && addr_len) {
-		i2c->IICDS = chip;
-		/* send START */
-		i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP;
-		i = 0;
-		while ((i < addr_len) && (result == I2C_OK)) {
-		    result = WaitForXfer();
-		    i2c->IICDS = addr[i];
-		    ReadWriteByte();
-		    i++;
-		}
-		i = 0;
-		while ((i < data_len) && (result == I2C_OK)) {
-		    result = WaitForXfer();
-		    i2c->IICDS = data[i];
-		    ReadWriteByte();
-		    i++;
-		}
-	    } else {
-		i2c->IICDS = chip;
-		/* send START */
-		i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP;
-		i = 0;
-		while ((i < data_len) && (result = I2C_OK)) {
-		    result = WaitForXfer();
-		    i2c->IICDS = data[i];
-		    ReadWriteByte();
-		    i++;
+		if (addr && addr_len) {
+			i2c->IICDS = chip;
+			/* send START */
+			i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP;
+			i = 0;
+			while ((i < addr_len) && (result == I2C_OK)) {
+				result = WaitForXfer ();
+				i2c->IICDS = addr[i];
+				ReadWriteByte ();
+				i++;
+			}
+			i = 0;
+			while ((i < data_len) && (result == I2C_OK)) {
+				result = WaitForXfer ();
+				i2c->IICDS = data[i];
+				ReadWriteByte ();
+				i++;
+			}
+		} else {
+			i2c->IICDS = chip;
+			/* send START */
+			i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP;
+			i = 0;
+			while ((i < data_len) && (result = I2C_OK)) {
+				result = WaitForXfer ();
+				i2c->IICDS = data[i];
+				ReadWriteByte ();
+				i++;
+			}
 		}
-	    }
 
-	    if (result == I2C_OK)
-		result = WaitForXfer();
+		if (result == I2C_OK)
+			result = WaitForXfer ();
 
-	    /* send STOP */
-	    i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
-	    ReadWriteByte();
-	    break;
+		/* send STOP */
+		i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
+		ReadWriteByte ();
+		break;
 
 	case I2C_READ:
-	    if (addr && addr_len) {
-		i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA;
-		i2c->IICDS = chip;
-		/* send START */
-		i2c->IICSTAT |= I2C_START_STOP;
-		result = WaitForXfer();
-		if (IsACK()) {
-		    i = 0;
-		    while ((i < addr_len) && (result == I2C_OK)) {
-			i2c->IICDS = addr[i];
-			ReadWriteByte();
-			result = WaitForXfer();
-			i++;
-		    }
-
-		    i2c->IICDS = chip;
-		    /* resend START */
-		    i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA | I2C_START_STOP;
-		    ReadWriteByte();
-		    result = WaitForXfer();
-		    i = 0;
-		    while ((i < data_len) && (result == I2C_OK)) {
-			/* disable ACK for final READ */
-			if (i == data_len - 1)
-			    i2c->IICCON &= ~0x80;
-			ReadWriteByte();
-			result = WaitForXfer();
-			data[i] = i2c->IICDS;
-			i++;
-		    }
-		} else {
-		    result = I2C_NACK;
-		}
+		if (addr && addr_len) {
+			i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA;
+			i2c->IICDS = chip;
+			/* send START */
+			i2c->IICSTAT |= I2C_START_STOP;
+			result = WaitForXfer ();
+			if (IsACK ()) {
+				i = 0;
+				while ((i < addr_len) && (result == I2C_OK)) {
+					i2c->IICDS = addr[i];
+					ReadWriteByte ();
+					result = WaitForXfer ();
+					i++;
+				}
+
+				i2c->IICDS = chip;
+				/* resend START */
+				i2c->IICSTAT =  I2C_MODE_MR | I2C_TXRX_ENA |
+						I2C_START_STOP;
+				ReadWriteByte ();
+				result = WaitForXfer ();
+				i = 0;
+				while ((i < data_len) && (result == I2C_OK)) {
+					/* disable ACK for final READ */
+					if (i == data_len - 1)
+						i2c->IICCON &= ~0x80;
+					ReadWriteByte ();
+					result = WaitForXfer ();
+					data[i] = i2c->IICDS;
+					i++;
+				}
+			} else {
+				result = I2C_NACK;
+			}
 
-	    } else {
-		i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
-		i2c->IICDS = chip;
-		/* send START */
-		i2c->IICSTAT |= I2C_START_STOP;
-		result = WaitForXfer();
-
-		if (IsACK()) {
-		    i = 0;
-		    while ((i < data_len) && (result == I2C_OK)) {
-			/* disable ACK for final READ */
-			if (i == data_len - 1)
-			    i2c->IICCON &= ~0x80;
-			ReadWriteByte();
-			result = WaitForXfer();
-			data[i] = i2c->IICDS;
-			i++;
-		    }
 		} else {
-		    result = I2C_NACK;
+			i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
+			i2c->IICDS = chip;
+			/* send START */
+			i2c->IICSTAT |= I2C_START_STOP;
+			result = WaitForXfer ();
+
+			if (IsACK ()) {
+				i = 0;
+				while ((i < data_len) && (result == I2C_OK)) {
+					/* disable ACK for final READ */
+					if (i == data_len - 1)
+						i2c->IICCON &= ~0x80;
+					ReadWriteByte ();
+					result = WaitForXfer ();
+					data[i] = i2c->IICDS;
+					i++;
+				}
+			} else {
+				result = I2C_NACK;
+			}
 		}
-	    }
 
-	    /* send STOP */
-	    i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
-	    ReadWriteByte();
-	    break;
+		/* send STOP */
+		i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
+		ReadWriteByte ();
+		break;
 
 	default:
-	    printf( "i2c_transfer: bad call\n" );
-	    result = I2C_NOK;
-	    break;
-    }
+		printf ("i2c_transfer: bad call\n");
+		result = I2C_NOK;
+		break;
+	}
 
-    return (result);
+	return (result);
 }
 
 int i2c_probe (uchar chip)
 {
-    uchar buf[1];
+	uchar buf[1];
 
-    buf[0] = 0;
+	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_transfer (I2C_READ, chip << 1, 0, 0, buf, 1) != I2C_OK);
+	/*
+	 * 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_transfer (I2C_READ, chip << 1, 0, 0, buf, 1) != I2C_OK);
 }
 
 int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len)
 {
-    uchar xaddr[4];
-    int ret;
+	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;
-    }
+	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 CFG_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)) & CFG_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)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
 #endif
-    if( (ret = i2c_transfer(I2C_READ, chip<<1, &xaddr[4-alen], alen, buffer, len )) != 0) {
-	printf( "I2c read: failed %d\n", ret);
-	return 1;
-    }
-    return 0;
+	if ((ret =
+	     i2c_transfer (I2C_READ, chip << 1, &xaddr[4 - alen], alen,
+			   buffer, len)) != 0) {
+		printf ("I2c read: failed %d\n", ret);
+		return 1;
+	}
+	return 0;
 }
 
 int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
 {
-    uchar xaddr[4];
+	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;
-    }
+	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 CFG_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)) & CFG_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)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
 #endif
-    return (i2c_transfer(I2C_WRITE, chip<<1, &xaddr[4-alen], alen, buffer, len ) != 0);
+	return (i2c_transfer
+		(I2C_WRITE, chip << 1, &xaddr[4 - alen], alen, buffer,
+		 len) != 0);
 }
-
 #endif	/* CONFIG_HARD_I2C */
 
 #endif /* CONFIG_DRIVER_S3C24X0_I2C */