mpc8260/i2c.c: CodingStyle cleanup

Make (mostly) checkpatch clean (don't convert to use I/O accessors
yet, so there will be "Use of volatile is usually wrong" warnings
left.  Also accept some other harmless checkpatch warnings.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>

1 files changed, 264 insertions, 270 deletions

diff --git a/arch/powerpc/cpu/mpc8260/i2c.c b/arch/powerpc/cpu/mpc8260/i2c.c
index d2bdcc2..4c99ee7 100644
--- a/arch/powerpc/cpu/mpc8260/i2c.c
+++ b/arch/powerpc/cpu/mpc8260/i2c.c
@@ -37,7 +37,7 @@
 DECLARE_GLOBAL_DATA_PTR;
 
 #if defined(CONFIG_I2C_MULTI_BUS)
-static unsigned int i2c_bus_num __attribute__ ((section (".data"))) = 0;
+static unsigned int i2c_bus_num __attribute__ ((section(".data"))) = 0;
 #endif /* CONFIG_I2C_MULTI_BUS */
 
 /* uSec to wait between polls of the i2c */
@@ -51,52 +51,50 @@ static unsigned int i2c_bus_num __attribute__ ((section (".data"))) = 0;
  */
 #define TOUT_LOOP 5
 
-/*-----------------------------------------------------------------------
+/*
  * Set default values
  */
 #ifndef	CONFIG_SYS_I2C_SPEED
 #define	CONFIG_SYS_I2C_SPEED	50000
 #endif
 
-/*-----------------------------------------------------------------------
- */
 
-typedef void (*i2c_ecb_t)(int, int, void *);    /* error callback function */
+typedef void (*i2c_ecb_t) (int, int, void *);	/* error callback function */
 
 /* This structure keeps track of the bd and buffer space usage. */
 typedef struct i2c_state {
-	int		rx_idx;		/* index   to next free Rx BD */
-	int		tx_idx;		/* index   to next free Tx BD */
-	void		*rxbd;		/* pointer to next free Rx BD */
-	void		*txbd;		/* pointer to next free Tx BD */
-	int		tx_space;	/* number  of Tx bytes left   */
-	unsigned char	*tx_buf;	/* pointer to free Tx area    */
-	i2c_ecb_t	err_cb;		/* error callback function    */
-	void		*cb_data;	/* private data to be passed  */
+	int rx_idx;		/* index   to next free Rx BD */
+	int tx_idx;		/* index   to next free Tx BD */
+	void *rxbd;		/* pointer to next free Rx BD */
+	void *txbd;		/* pointer to next free Tx BD */
+	int tx_space;		/* number  of Tx bytes left   */
+	unsigned char *tx_buf;	/* pointer to free Tx area    */
+	i2c_ecb_t err_cb;	/* error callback function    */
+	void *cb_data;		/* private data to be passed  */
 } i2c_state_t;
 
 /* flags for i2c_send() and i2c_receive() */
-#define	I2CF_ENABLE_SECONDARY	0x01	/* secondary_address is valid	*/
-#define	I2CF_START_COND		0x02	/* tx: generate start condition	*/
-#define I2CF_STOP_COND		0x04	/* tx: generate stop  condition	*/
+#define	I2CF_ENABLE_SECONDARY	0x01	/* secondary_address is valid   */
+#define	I2CF_START_COND		0x02	/* tx: generate start condition */
+#define I2CF_STOP_COND		0x04	/* tx: generate stop  condition */
 
 /* return codes */
-#define I2CERR_NO_BUFFERS	1	/* no more BDs or buffer space	*/
-#define I2CERR_MSG_TOO_LONG	2	/* tried to send/receive to much data   */
-#define I2CERR_TIMEOUT		3	/* timeout in i2c_doio()	*/
-#define I2CERR_QUEUE_EMPTY	4	/* i2c_doio called without send/receive */
-#define I2CERR_IO_ERROR		5	/* had an error during comms	*/
+#define I2CERR_NO_BUFFERS	1	/* no more BDs or buffer space  */
+#define I2CERR_MSG_TOO_LONG	2	/* tried to send/receive to much data */
+#define I2CERR_TIMEOUT		3	/* timeout in i2c_doio()        */
+#define I2CERR_QUEUE_EMPTY	4	/* i2c_doio called without send/rcv */
+#define I2CERR_IO_ERROR		5	/* had an error during comms    */
 
 /* error callback flags */
-#define I2CECB_RX_ERR		0x10	/* this is a receive error	*/
-#define     I2CECB_RX_OV	0x02	/* receive overrun error	*/
-#define     I2CECB_RX_MASK	0x0f	/* mask for error bits		*/
-#define I2CECB_TX_ERR		0x20	/* this is a transmit error	*/
-#define     I2CECB_TX_CL	0x01	/* transmit collision error	*/
-#define     I2CECB_TX_UN	0x02	/* transmit underflow error	*/
-#define     I2CECB_TX_NAK	0x04	/* transmit no ack error	*/
-#define     I2CECB_TX_MASK	0x0f	/* mask for error bits		*/
-#define I2CECB_TIMEOUT		0x40	/* this is a timeout error	*/
+#define I2CECB_RX_ERR		0x10	/* this is a receive error      */
+#define     I2CECB_RX_OV	0x02	/* receive overrun error        */
+#define     I2CECB_RX_MASK	0x0f	/* mask for error bits          */
+#define I2CECB_TX_ERR		0x20	/* this is a transmit error     */
+#define     I2CECB_TX_CL	0x01	/* transmit collision error     */
+#define     I2CECB_TX_UN	0x02	/* transmit underflow error     */
+#define     I2CECB_TX_NAK	0x04	/* transmit no ack error        */
+#define     I2CECB_TX_MASK	0x0f	/* mask for error bits          */
+#define I2CECB_TIMEOUT		0x40	/* this is a timeout error      */
 
 #define ERROR_I2C_NONE		0
 #define ERROR_I2C_LENGTH	1
@@ -111,13 +109,13 @@ typedef struct i2c_state {
 #define NUM_TX_BDS 4
 #define MAX_TX_SPACE 256
 
-typedef struct I2C_BD
-{
-  unsigned short status;
-  unsigned short length;
-  unsigned char *addr;
+typedef struct I2C_BD {
+	unsigned short status;
+	unsigned short length;
+	unsigned char *addr;
 } I2C_BD;
-#define BD_I2C_TX_START 0x0400  /* special status for i2c: Start condition */
+
+#define BD_I2C_TX_START 0x0400	/* special status for i2c: Start condition */
 
 #define BD_I2C_TX_CL	0x0001	/* collision error */
 #define BD_I2C_TX_UN	0x0002	/* underflow error */
@@ -140,32 +138,32 @@ typedef struct I2C_BD
  */
 static inline int
 i2c_roundrate(int hz, int speed, int filter, int modval,
-		int *brgval, int *totspeed)
+	      int *brgval, int *totspeed)
 {
-    int moddiv = 1 << (5-(modval & 3)), brgdiv, div;
+	int moddiv = 1 << (5 - (modval & 3)), brgdiv, div;
 
-    PRINTD(("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
-	hz, speed, filter, modval));
+	PRINTD(("\t[I2C] trying hz=%d, speed=%d, filter=%d, modval=%d\n",
+		hz, speed, filter, modval));
 
-    div = moddiv * speed;
-    brgdiv = (hz + div - 1) / div;
+	div = moddiv * speed;
+	brgdiv = (hz + div - 1) / div;
 
-    PRINTD(("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv));
+	PRINTD(("\t\tmoddiv=%d, brgdiv=%d\n", moddiv, brgdiv));
 
-    *brgval = ((brgdiv + 1) / 2) - 3 - (2*filter);
+	*brgval = ((brgdiv + 1) / 2) - 3 - (2 * filter);
 
-    if ((*brgval < 0) || (*brgval > 255)) {
-	  PRINTD(("\t\trejected brgval=%d\n", *brgval));
-	  return -1;
-    }
+	if ((*brgval < 0) || (*brgval > 255)) {
+		PRINTD(("\t\trejected brgval=%d\n", *brgval));
+		return -1;
+	}
 
-    brgdiv = 2 * (*brgval + 3 + (2 * filter));
-    div = moddiv * brgdiv ;
-    *totspeed = hz / div;
+	brgdiv = 2 * (*brgval + 3 + (2 * filter));
+	div = moddiv * brgdiv;
+	*totspeed = hz / div;
 
-    PRINTD(("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed));
+	PRINTD(("\t\taccepted brgval=%d, totspeed=%d\n", *brgval, *totspeed));
 
-    return  0;
+	return 0;
 }
 
 /*
@@ -173,84 +171,87 @@ i2c_roundrate(int hz, int speed, int filter, int modval,
  */
 static int i2c_setrate(int hz, int speed)
 {
-    immap_t	*immap = (immap_t *)CONFIG_SYS_IMMR ;
-    volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
-    int brgval,
-	  modval,	/* 0-3 */
-	  bestspeed_diff = speed,
-	  bestspeed_brgval=0,
-	  bestspeed_modval=0,
-	  bestspeed_filter=0,
-	  totspeed,
-	  filter = 0; /* Use this fixed value */
-
-	for (modval = 0; modval < 4; modval++)
-	{
-		if (i2c_roundrate (hz, speed, filter, modval, &brgval, &totspeed) == 0)
-		{
-			int diff = speed - totspeed ;
-
-			if ((diff >= 0) && (diff < bestspeed_diff))
-			{
-				bestspeed_diff	= diff ;
-				bestspeed_modval	= modval;
-				bestspeed_brgval	= brgval;
-				bestspeed_filter	= filter;
+	immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
+	volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
+	int	brgval,
+		modval,	/* 0-3 */
+		bestspeed_diff = speed,
+		bestspeed_brgval = 0,
+		bestspeed_modval = 0,
+		bestspeed_filter = 0,
+		totspeed,
+		filter = 0;	/* Use this fixed value */
+
+	for (modval = 0; modval < 4; modval++) {
+		if (i2c_roundrate(hz, speed, filter, modval, &brgval, &totspeed)
+		    == 0) {
+			int diff = speed - totspeed;
+
+			if ((diff >= 0) && (diff < bestspeed_diff)) {
+				bestspeed_diff = diff;
+				bestspeed_modval = modval;
+				bestspeed_brgval = brgval;
+				bestspeed_filter = filter;
 			}
 		}
 	}
 
-    PRINTD(("[I2C] Best is:\n"));
-    PRINTD(("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
-		   hz, speed,
-		   bestspeed_filter, bestspeed_modval, bestspeed_brgval,
-		   bestspeed_diff));
+	PRINTD(("[I2C] Best is:\n"));
+	PRINTD(("[I2C] CPU=%dhz RATE=%d F=%d I2MOD=%08x I2BRG=%08x DIFF=%dhz\n",
+		hz, speed, bestspeed_filter, bestspeed_modval, bestspeed_brgval,
+		bestspeed_diff));
 
-    i2c->i2c_i2mod |= ((bestspeed_modval & 3) << 1) | (bestspeed_filter << 3);
-    i2c->i2c_i2brg = bestspeed_brgval & 0xff;
+	i2c->i2c_i2mod |= ((bestspeed_modval & 3) << 1) |
+		(bestspeed_filter << 3);
+	i2c->i2c_i2brg = bestspeed_brgval & 0xff;
 
-    PRINTD(("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod, i2c->i2c_i2brg));
+	PRINTD(("[I2C] i2mod=%08x i2brg=%08x\n", i2c->i2c_i2mod,
+		i2c->i2c_i2brg));
 
-    return 1 ;
+	return 1;
 }
 
 void i2c_init(int speed, int slaveadd)
 {
-	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
+	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
 	volatile cpm8260_t *cp = (cpm8260_t *)&immap->im_cpm;
-	volatile i2c8260_t *i2c	= (i2c8260_t *)&immap->im_i2c;
+	volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
 	volatile iic_t *iip;
 	ulong rbase, tbase;
 	volatile I2C_BD *rxbd, *txbd;
 	uint dpaddr;
 
 #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.                  */
+	/*
+	 * 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
 
-	dpaddr = *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE]));
+	dpaddr = *((unsigned short *) (&immap->im_dprambase[PROFF_I2C_BASE]));
 	if (dpaddr == 0) {
-	    /* need to allocate dual port ram */
-	    dpaddr = m8260_cpm_dpalloc(64 +
-		(NUM_RX_BDS * sizeof(I2C_BD)) + (NUM_TX_BDS * sizeof(I2C_BD)) +
-		MAX_TX_SPACE, 64);
-	    *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE])) = dpaddr;
+		/* need to allocate dual port ram */
+		dpaddr = m8260_cpm_dpalloc(64 +
+					(NUM_RX_BDS * sizeof(I2C_BD)) +
+					(NUM_TX_BDS * sizeof(I2C_BD)) +
+					MAX_TX_SPACE, 64);
+		*((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE])) =
+			dpaddr;
 	}
 
 	/*
 	 * initialise data in dual port ram:
 	 *
-	 *	  dpaddr -> parameter ram (64 bytes)
+	 *        dpaddr -> parameter ram (64 bytes)
 	 *         rbase -> rx BD         (NUM_RX_BDS * sizeof(I2C_BD) bytes)
 	 *         tbase -> tx BD         (NUM_TX_BDS * sizeof(I2C_BD) bytes)
 	 *                  tx buffer     (MAX_TX_SPACE bytes)
 	 */
 
 	iip = (iic_t *)&immap->im_dprambase[dpaddr];
-	memset((void*)iip, 0, sizeof(iic_t));
+	memset((void *)iip, 0, sizeof(iic_t));
 
 	rbase = dpaddr + 64;
 	tbase = rbase + NUM_RX_BDS * sizeof(I2C_BD);
@@ -267,7 +268,7 @@ void i2c_init(int speed, int slaveadd)
 	 * divide BRGCLK by 1)
 	 */
 	PRINTD(("[I2C] Setting rate...\n"));
-	i2c_setrate (gd->brg_clk, CONFIG_SYS_I2C_SPEED) ;
+	i2c_setrate(gd->brg_clk, CONFIG_SYS_I2C_SPEED);
 
 	/* Set I2C controller in master mode */
 	i2c->i2c_i2com = 0x01;
@@ -275,13 +276,15 @@ void i2c_init(int speed, int slaveadd)
 	/* Initialize Tx/Rx parameters */
 	iip->iic_rbase = rbase;
 	iip->iic_tbase = tbase;
-	rxbd = (I2C_BD *)((unsigned char *)&immap->im_dprambase[iip->iic_rbase]);
-	txbd = (I2C_BD *)((unsigned char *)&immap->im_dprambase[iip->iic_tbase]);
+	rxbd = (I2C_BD *)((unsigned char *) &immap->
+			im_dprambase[iip->iic_rbase]);
+	txbd = (I2C_BD *)((unsigned char *) &immap->
+			im_dprambase[iip->iic_tbase]);
 
 	PRINTD(("[I2C] rbase = %04x\n", iip->iic_rbase));
 	PRINTD(("[I2C] tbase = %04x\n", iip->iic_tbase));
-	PRINTD(("[I2C] rxbd = %08x\n", (int)rxbd));
-	PRINTD(("[I2C] txbd = %08x\n", (int)txbd));
+	PRINTD(("[I2C] rxbd = %08x\n", (int) rxbd));
+	PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
 
 	/* Set big endian byte order */
 	iip->iic_tfcr = 0x10;
@@ -290,13 +293,12 @@ void i2c_init(int speed, int slaveadd)
 	/* Set maximum receive size. */
 	iip->iic_mrblr = I2C_RXTX_LEN;
 
-    cp->cp_cpcr = mk_cr_cmd(CPM_CR_I2C_PAGE,
-							CPM_CR_I2C_SBLOCK,
-							0x00,
-							CPM_CR_INIT_TRX) | CPM_CR_FLG;
-    do {
-		__asm__ __volatile__ ("eieio");
-    } while (cp->cp_cpcr & CPM_CR_FLG);
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_I2C_PAGE,
+				CPM_CR_I2C_SBLOCK,
+				0x00, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+	do {
+		__asm__ __volatile__("eieio");
+	} while (cp->cp_cpcr & CPM_CR_FLG);
 
 	/* Clear events and interrupts */
 	i2c->i2c_i2cer = 0xff;
@@ -306,20 +308,20 @@ void i2c_init(int speed, int slaveadd)
 static
 void i2c_newio(i2c_state_t *state)
 {
-	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
+	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
 	volatile iic_t *iip;
 	uint dpaddr;
 
 	PRINTD(("[I2C] i2c_newio\n"));
 
-	dpaddr = *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE]));
+	dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
 	iip = (iic_t *)&immap->im_dprambase[dpaddr];
 	state->rx_idx = 0;
 	state->tx_idx = 0;
-	state->rxbd = (void*)&immap->im_dprambase[iip->iic_rbase];
-	state->txbd = (void*)&immap->im_dprambase[iip->iic_tbase];
+	state->rxbd = (void *)&immap->im_dprambase[iip->iic_rbase];
+	state->txbd = (void *)&immap->im_dprambase[iip->iic_tbase];
 	state->tx_space = MAX_TX_SPACE;
-	state->tx_buf = (uchar*)state->txbd + NUM_TX_BDS * sizeof(I2C_BD);
+	state->tx_buf = (uchar *)state->txbd + NUM_TX_BDS * sizeof(I2C_BD);
 	state->err_cb = NULL;
 	state->cb_data = NULL;
 
@@ -328,125 +330,114 @@ void i2c_newio(i2c_state_t *state)
 	PRINTD(("[I2C] tx_buf = %08x\n", (int)state->tx_buf));
 
 	/* clear the buffer memory */
-	memset((char *)state->tx_buf, 0, MAX_TX_SPACE);
+	memset((char *) state->tx_buf, 0, MAX_TX_SPACE);
 }
 
 static
 int i2c_send(i2c_state_t *state,
-			 unsigned char address,
-			 unsigned char secondary_address,
-			 unsigned int flags,
-			 unsigned short size,
-			 unsigned char *dataout)
+	     unsigned char address,
+	     unsigned char secondary_address,
+	     unsigned int flags, unsigned short size, unsigned char *dataout)
 {
 	volatile I2C_BD *txbd;
-	int i,j;
+	int i, j;
 
 	PRINTD(("[I2C] i2c_send add=%02d sec=%02d flag=%02d size=%d\n",
-			address, secondary_address, flags, size));
+		address, secondary_address, flags, size));
 
 	/* trying to send message larger than BD */
 	if (size > I2C_RXTX_LEN)
-	  return I2CERR_MSG_TOO_LONG;
+		return I2CERR_MSG_TOO_LONG;
 
 	/* no more free bds */
 	if (state->tx_idx >= NUM_TX_BDS || state->tx_space < (2 + size))
-	  return I2CERR_NO_BUFFERS;
+		return I2CERR_NO_BUFFERS;
 
 	txbd = (I2C_BD *)state->txbd;
 	txbd->addr = state->tx_buf;
 
-	PRINTD(("[I2C] txbd = %08x\n", (int)txbd));
-
-    if (flags & I2CF_START_COND)
-    {
-	PRINTD(("[I2C] Formatting addresses...\n"));
-	if (flags & I2CF_ENABLE_SECONDARY)
-	{
-		txbd->length = size + 2;  /* Length of message plus dest addresses */
-		txbd->addr[0] = address << 1;
-		txbd->addr[1] = secondary_address;
-		i = 2;
-	}
-	else
-	{
-		txbd->length = size + 1;  /* Length of message plus dest address */
-		txbd->addr[0] = address << 1;  /* Write destination address to BD */
-		i = 1;
+	PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
+
+	if (flags & I2CF_START_COND) {
+		PRINTD(("[I2C] Formatting addresses...\n"));
+		if (flags & I2CF_ENABLE_SECONDARY) {
+			/* Length of message plus dest addresses */
+			txbd->length = size + 2;
+			txbd->addr[0] = address << 1;
+			txbd->addr[1] = secondary_address;
+			i = 2;
+		} else {
+			/* Length of message plus dest address */
+			txbd->length = size + 1;
+			/* Write destination address to BD */
+			txbd->addr[0] = address << 1;
+			i = 1;
+		}
+	} else {
+		txbd->length = size;	/* Length of message */
+		i = 0;
 	}
-    }
-    else
-    {
-	txbd->length = size;  /* Length of message */
-	i = 0;
-    }
 
 	/* set up txbd */
 	txbd->status = BD_SC_READY;
 	if (flags & I2CF_START_COND)
-	  txbd->status |= BD_I2C_TX_START;
+		txbd->status |= BD_I2C_TX_START;
 	if (flags & I2CF_STOP_COND)
-	  txbd->status |= BD_SC_LAST | BD_SC_WRAP;
+		txbd->status |= BD_SC_LAST | BD_SC_WRAP;
 
 	/* Copy data to send into buffer */
 	PRINTD(("[I2C] copy data...\n"));
-	for(j = 0; j < size; i++, j++)
-	  txbd->addr[i] = dataout[j];
+	for (j = 0; j < size; i++, j++)
+		txbd->addr[i] = dataout[j];
 
 	PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
-		   txbd->length,
-		   txbd->status,
-		   txbd->addr[0],
-		   txbd->addr[1]));
+		txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]));
 
 	/* advance state */
 	state->tx_buf += txbd->length;
 	state->tx_space -= txbd->length;
 	state->tx_idx++;
-	state->txbd = (void*)(txbd + 1);
+	state->txbd = (void *) (txbd + 1);
 
 	return 0;
 }
 
 static
 int i2c_receive(i2c_state_t *state,
-				unsigned char address,
-				unsigned char secondary_address,
-				unsigned int flags,
-				unsigned short size_to_expect,
-				unsigned char *datain)
+		unsigned char address,
+		unsigned char secondary_address,
+		unsigned int flags,
+		unsigned short size_to_expect, unsigned char *datain)
 {
 	volatile I2C_BD *rxbd, *txbd;
 
-	PRINTD(("[I2C] i2c_receive %02d %02d %02d\n", address, secondary_address, flags));
+	PRINTD(("[I2C] i2c_receive %02d %02d %02d\n", address,
+		secondary_address, flags));
 
 	/* Expected to receive too much */
 	if (size_to_expect > I2C_RXTX_LEN)
-	  return I2CERR_MSG_TOO_LONG;
+		return I2CERR_MSG_TOO_LONG;
 
 	/* no more free bds */
 	if (state->tx_idx >= NUM_TX_BDS || state->rx_idx >= NUM_RX_BDS
-		 || state->tx_space < 2)
-	  return I2CERR_NO_BUFFERS;
+	    || state->tx_space < 2)
+		return I2CERR_NO_BUFFERS;
 
-	rxbd = (I2C_BD *)state->rxbd;
-	txbd = (I2C_BD *)state->txbd;
+	rxbd = (I2C_BD *) state->rxbd;
+	txbd = (I2C_BD *) state->txbd;
 
-	PRINTD(("[I2C] rxbd = %08x\n", (int)rxbd));
-	PRINTD(("[I2C] txbd = %08x\n", (int)txbd));
+	PRINTD(("[I2C] rxbd = %08x\n", (int) rxbd));
+	PRINTD(("[I2C] txbd = %08x\n", (int) txbd));
 
 	txbd->addr = state->tx_buf;
 
 	/* set up TXBD for destination address */
-	if (flags & I2CF_ENABLE_SECONDARY)
-	{
+	if (flags & I2CF_ENABLE_SECONDARY) {
 		txbd->length = 2;
-		txbd->addr[0] = address << 1;   /* Write data */
-		txbd->addr[1] = secondary_address;  /* Internal address */
+		txbd->addr[0] = address << 1;	/* Write data */
+		txbd->addr[1] = secondary_address;	/* Internal address */
 		txbd->status = BD_SC_READY;
-	}
-	else
-	{
+	} else {
 		txbd->length = 1 + size_to_expect;
 		txbd->addr[0] = (address << 1) | 0x01;
 		txbd->status = BD_SC_READY;
@@ -459,30 +450,23 @@ int i2c_receive(i2c_state_t *state,
 	rxbd->addr = datain;
 
 	txbd->status |= BD_I2C_TX_START;
-	if (flags & I2CF_STOP_COND)
-	{
+	if (flags & I2CF_STOP_COND) {
 		txbd->status |= BD_SC_LAST | BD_SC_WRAP;
 		rxbd->status |= BD_SC_WRAP;
 	}
 
 	PRINTD(("[I2C] txbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
-		   txbd->length,
-		   txbd->status,
-		   txbd->addr[0],
-		   txbd->addr[1]));
+		txbd->length, txbd->status, txbd->addr[0], txbd->addr[1]));
 	PRINTD(("[I2C] rxbd: length=0x%04x status=0x%04x addr[0]=0x%02x addr[1]=0x%02x\n",
-		   rxbd->length,
-		   rxbd->status,
-		   rxbd->addr[0],
-		   rxbd->addr[1]));
+		rxbd->length, rxbd->status, rxbd->addr[0], rxbd->addr[1]));
 
 	/* advance state */
 	state->tx_buf += txbd->length;
 	state->tx_space -= txbd->length;
 	state->tx_idx++;
-	state->txbd = (void*)(txbd + 1);
+	state->txbd = (void *) (txbd + 1);
 	state->rx_idx++;
-	state->rxbd = (void*)(rxbd + 1);
+	state->rxbd = (void *) (rxbd + 1);
 
 	return 0;
 }
@@ -491,11 +475,11 @@ int i2c_receive(i2c_state_t *state,
 static
 int i2c_doio(i2c_state_t *state)
 {
-	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
+	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
 	volatile iic_t *iip;
-	volatile i2c8260_t *i2c	= (i2c8260_t *)&immap->im_i2c;
+	volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
 	volatile I2C_BD *txbd, *rxbd;
-	int  n, i, b, rxcnt = 0, rxtimeo = 0, txcnt = 0, txtimeo = 0, rc = 0;
+	int n, i, b, rxcnt = 0, rxtimeo = 0, txcnt = 0, txtimeo = 0, rc = 0;
 	uint dpaddr;
 
 	PRINTD(("[I2C] i2c_doio\n"));
@@ -505,7 +489,7 @@ int i2c_doio(i2c_state_t *state)
 		return I2CERR_QUEUE_EMPTY;
 	}
 
-	dpaddr = *((unsigned short*)(&immap->im_dprambase[PROFF_I2C_BASE]));
+	dpaddr = *((unsigned short *)(&immap->im_dprambase[PROFF_I2C_BASE]));
 	iip = (iic_t *)&immap->im_dprambase[dpaddr];
 	iip->iic_rbptr = iip->iic_rbase;
 	iip->iic_tbptr = iip->iic_tbase;
@@ -519,90 +503,100 @@ int i2c_doio(i2c_state_t *state)
 
 	/* Loop until transmit & receive completed */
 
-	if ((n = state->tx_idx) > 0) {
+	n = state->tx_idx;
+
+	if (n > 0) {
 
-		txbd = ((I2C_BD*)state->txbd) - n;
+		txbd = ((I2C_BD *) state->txbd) - n;
 		for (i = 0; i < n; i++) {
 			txtimeo += TOUT_LOOP * txbd->length;
 			txbd++;
 		}
 
-		txbd--; /* wait until last in list is done */
+		txbd--;		/* wait until last in list is done */
 
-		PRINTD(("[I2C] Transmitting...(txbd=0x%08lx)\n", (ulong)txbd));
+		PRINTD(("[I2C] Transmitting...(txbd=0x%08lx)\n",
+			(ulong) txbd));
 
 		udelay(START_DELAY_US);	/* give it time to start */
-		while((txbd->status & BD_SC_READY) && (++txcnt < txtimeo)) {
+		while ((txbd->status & BD_SC_READY) && (++txcnt < txtimeo)) {
 			udelay(DELAY_US);
 			if (ctrlc())
-				return (-1);
-			__asm__ __volatile__ ("eieio");
+				return -1;
+			__asm__ __volatile__("eieio");
 		}
 	}
 
-	if (txcnt < txtimeo && (n = state->rx_idx) > 0) {
+	n = state->rx_idx;
 
-		rxbd = ((I2C_BD*)state->rxbd) - n;
+	if (txcnt < txtimeo && n > 0) {
+
+		rxbd = ((I2C_BD *) state->rxbd) - n;
 		for (i = 0; i < n; i++) {
 			rxtimeo += TOUT_LOOP * rxbd->length;
 			rxbd++;
 		}
 
-		rxbd--; /* wait until last in list is done */
+		rxbd--;		/* wait until last in list is done */
 
-		PRINTD(("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong)rxbd));
+		PRINTD(("[I2C] Receiving...(rxbd=0x%08lx)\n", (ulong) rxbd));
 
 		udelay(START_DELAY_US);	/* give it time to start */
-		while((rxbd->status & BD_SC_EMPTY) && (++rxcnt < rxtimeo)) {
+		while ((rxbd->status & BD_SC_EMPTY) && (++rxcnt < rxtimeo)) {
 			udelay(DELAY_US);
 			if (ctrlc())
-				return (-1);
-			__asm__ __volatile__ ("eieio");
+				return -1;
+			__asm__ __volatile__("eieio");
 		}
 	}
 
 	/* Turn off I2C */
 	i2c->i2c_i2mod &= ~0x01;
 
-	if ((n = state->tx_idx) > 0) {
+	n = state->tx_idx;
+
+	if (n > 0) {
 		for (i = 0; i < n; i++) {
-			txbd = ((I2C_BD*)state->txbd) - (n - i);
-			if ((b = txbd->status & BD_I2C_TX_ERR) != 0) {
+			txbd = ((I2C_BD *) state->txbd) - (n - i);
+			b = txbd->status & BD_I2C_TX_ERR;
+			if (b != 0) {
 				if (state->err_cb != NULL)
-					(*state->err_cb)(I2CECB_TX_ERR|b, i,
-						state->cb_data);
+					(*state->err_cb) (I2CECB_TX_ERR | b,
+							  i, state->cb_data);
 				if (rc == 0)
 					rc = I2CERR_IO_ERROR;
 			}
 		}
 	}
 
-	if ((n = state->rx_idx) > 0) {
+	n = state->rx_idx;
+
+	if (n > 0) {
 		for (i = 0; i < n; i++) {
-			rxbd = ((I2C_BD*)state->rxbd) - (n - i);
-			if ((b = rxbd->status & BD_I2C_RX_ERR) != 0) {
+			rxbd = ((I2C_BD *) state->rxbd) - (n - i);
+			b = rxbd->status & BD_I2C_RX_ERR;
+			if (b != 0) {
 				if (state->err_cb != NULL)
-					(*state->err_cb)(I2CECB_RX_ERR|b, i,
-						state->cb_data);
+					(*state->err_cb) (I2CECB_RX_ERR | b,
+							  i, state->cb_data);
 				if (rc == 0)
 					rc = I2CERR_IO_ERROR;
 			}
 		}
 	}
 
-	if ((txtimeo > 0 && txcnt >= txtimeo) || \
+	if ((txtimeo > 0 && txcnt >= txtimeo) ||
 	    (rxtimeo > 0 && rxcnt >= rxtimeo)) {
 		if (state->err_cb != NULL)
-			(*state->err_cb)(I2CECB_TIMEOUT, -1, state->cb_data);
+			(*state->err_cb) (I2CECB_TIMEOUT, -1, state->cb_data);
 		if (rc == 0)
 			rc = I2CERR_TIMEOUT;
 	}
 
-	return (rc);
+	return rc;
 }
 
-static void
-i2c_probe_callback(int flags, int xnum, void *data)
+static void i2c_probe_callback(int flags, int xnum, void *data)
 {
 	/*
 	 * the only acceptable errors are a transmit NAK or a receive
@@ -610,14 +604,13 @@ i2c_probe_callback(int flags, int xnum, void *data)
 	 * means the device must have responded to the slave address
 	 * even though the transfer failed
 	 */
-	if (flags == (I2CECB_TX_ERR|I2CECB_TX_NAK))
-		*(int *)data |= 1;
-	if (flags == (I2CECB_RX_ERR|I2CECB_RX_OV))
-		*(int *)data |= 2;
+	if (flags == (I2CECB_TX_ERR | I2CECB_TX_NAK))
+		*(int *) data |= 1;
+	if (flags == (I2CECB_RX_ERR | I2CECB_RX_OV))
+		*(int *) data |= 2;
 }
 
-int
-i2c_probe(uchar chip)
+int i2c_probe(uchar chip)
 {
 	i2c_state_t state;
 	int rc, err_flag;
@@ -629,31 +622,31 @@ i2c_probe(uchar chip)
 	state.cb_data = (void *) &err_flag;
 	err_flag = 0;
 
-	rc = i2c_receive(&state, chip, 0, I2CF_START_COND|I2CF_STOP_COND, 1, buf);
+	rc = i2c_receive(&state, chip, 0, I2CF_START_COND | I2CF_STOP_COND, 1,
+			 buf);
 
 	if (rc != 0)
-		return (rc);	/* probe failed */
+		return rc;	/* probe failed */
 
 	rc = i2c_doio(&state);
 
 	if (rc == 0)
-		return (0);	/* device exists - read succeeded */
+		return 0;	/* device exists - read succeeded */
 
 	if (rc == I2CERR_TIMEOUT)
-		return (-1);	/* device does not exist - timeout */
+		return -1;	/* device does not exist - timeout */
 
 	if (rc != I2CERR_IO_ERROR || err_flag == 0)
-		return (rc);	/* probe failed */
+		return rc;	/* probe failed */
 
 	if (err_flag & 1)
-		return (-1);	/* device does not exist - had transmit NAK */
+		return -1;	/* device does not exist - had transmit NAK */
 
-	return (0);	/* device exists - had receive overrun */
+	return 0;		/* device exists - had receive overrun */
 }
 
 
-int
-i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
 {
 	i2c_state_t state;
 	uchar xaddr[4];
@@ -661,27 +654,28 @@ i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
 
 	xaddr[0] = (addr >> 24) & 0xFF;
 	xaddr[1] = (addr >> 16) & 0xFF;
-	xaddr[2] = (addr >>  8) & 0xFF;
-	xaddr[3] =  addr        & 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.
-	  */
+	/*
+	 * 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.
+	 */
 	chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
 #endif
 
 	i2c_newio(&state);
 
-	rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen, &xaddr[4-alen]);
+	rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen,
+		      &xaddr[4 - alen]);
 	if (rc != 0) {
 		printf("i2c_read: i2c_send failed (%d)\n", rc);
 		return 1;
@@ -701,8 +695,7 @@ i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
 	return 0;
 }
 
-int
-i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
 {
 	i2c_state_t state;
 	uchar xaddr[4];
@@ -710,27 +703,28 @@ i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
 
 	xaddr[0] = (addr >> 24) & 0xFF;
 	xaddr[1] = (addr >> 16) & 0xFF;
-	xaddr[2] = (addr >>  8) & 0xFF;
-	xaddr[3] =  addr        & 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.
-	  */
+	/*
+	 * 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.
+	 */
 	chip |= ((addr >> (alen * 8)) & CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
 #endif
 
 	i2c_newio(&state);
 
-	rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen, &xaddr[4-alen]);
+	rc = i2c_send(&state, chip, 0, I2CF_START_COND, alen,
+		      &xaddr[4 - alen]);
 	if (rc != 0) {
 		printf("i2c_write: first i2c_send failed (%d)\n", rc);
 		return 1;
@@ -765,7 +759,7 @@ int i2c_set_bus_num(unsigned int bus)
 	if (bus < CONFIG_SYS_MAX_I2C_BUS) {
 		i2c_bus_num = bus;
 	} else {
-		int	ret;
+		int ret;
 
 		ret = i2x_mux_select_mux(bus);
 		if (ret == 0)
@@ -781,5 +775,5 @@ int i2c_set_bus_num(unsigned int bus)
 	return 0;
 }
 
-#endif	/* CONFIG_I2C_MULTI_BUS */
-#endif	/* CONFIG_HARD_I2C */
+#endif /* CONFIG_I2C_MULTI_BUS */
+#endif /* CONFIG_HARD_I2C */