pico-dlpcontrol: use a modified version of the gumstix 'i2c' program and wrap it with a script

* 'picodlp-control hflip 1' will turn on horizontil flipping

1 files changed, 220 insertions, 180 deletions

diff --git a/packages/i2c-tools/picodlp-control/i2c-dev.h b/packages/i2c-tools/picodlp-control/i2c-dev.h
index 98a87f2c06..cd20965ede 100644
--- a/packages/i2c-tools/picodlp-control/i2c-dev.h
+++ b/packages/i2c-tools/picodlp-control/i2c-dev.h
@@ -19,7 +19,7 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-/* $Id: i2c-dev.h 3177 2005-11-05 17:11:47Z khali $ */
+/* $Id: i2c-dev.h,v 1.4 2003/11/27 23:08:06 tat Exp $ */
 
 #ifndef LIB_I2CDEV_H
 #define LIB_I2CDEV_H
@@ -35,107 +35,141 @@
  * I2C Message - used for pure i2c transaction, also from /dev interface
  */
 struct i2c_msg {
-	__u16 addr;	/* slave address			*/
-	unsigned short flags;		
-#define I2C_M_TEN	0x10	/* we have a ten bit chip address	*/
-#define I2C_M_RD	0x01
-#define I2C_M_NOSTART	0x4000
-#define I2C_M_REV_DIR_ADDR	0x2000
-#define I2C_M_IGNORE_NAK	0x1000
-#define I2C_M_NO_RD_ACK		0x0800
-	short len;		/* msg length				*/
-	char *buf;		/* pointer to msg data			*/
+        __u16 addr;     /* slave address                        */
+        unsigned short flags;           
+#define I2C_M_TEN       0x10    /* we have a ten bit chip address       */
+#define I2C_M_RD        0x01
+#define I2C_M_NOSTART   0x4000
+#define I2C_M_REV_DIR_ADDR      0x2000
+#define I2C_M_IGNORE_NAK        0x1000
+#define I2C_M_NO_RD_ACK         0x0800
+        short len;              /* msg length                           */
+        char *buf;              /* pointer to msg data                  */
 };
 
 /* To determine what functionality is present */
 
-#define I2C_FUNC_I2C			0x00000001
-#define I2C_FUNC_10BIT_ADDR		0x00000002
-#define I2C_FUNC_PROTOCOL_MANGLING	0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
-#define I2C_FUNC_SMBUS_HWPEC_CALC	0x00000008 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL	0x00008000 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_QUICK		0x00010000 
-#define I2C_FUNC_SMBUS_READ_BYTE	0x00020000 
-#define I2C_FUNC_SMBUS_WRITE_BYTE	0x00040000 
-#define I2C_FUNC_SMBUS_READ_BYTE_DATA	0x00080000 
-#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA	0x00100000 
-#define I2C_FUNC_SMBUS_READ_WORD_DATA	0x00200000 
-#define I2C_FUNC_SMBUS_WRITE_WORD_DATA	0x00400000 
-#define I2C_FUNC_SMBUS_PROC_CALL	0x00800000 
-#define I2C_FUNC_SMBUS_READ_BLOCK_DATA	0x01000000 
+#define I2C_FUNC_I2C                    0x00000001
+#define I2C_FUNC_10BIT_ADDR             0x00000002
+#define I2C_FUNC_PROTOCOL_MANGLING      0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
+#define I2C_FUNC_SMBUS_HWPEC_CALC       0x00000008 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_READ_WORD_DATA_PEC  0x00000800 /* SMBus 2.0 */ 
+#define I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC 0x00001000 /* SMBus 2.0 */ 
+#define I2C_FUNC_SMBUS_PROC_CALL_PEC    0x00002000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC 0x00004000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL  0x00008000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_QUICK            0x00010000 
+#define I2C_FUNC_SMBUS_READ_BYTE        0x00020000 
+#define I2C_FUNC_SMBUS_WRITE_BYTE       0x00040000 
+#define I2C_FUNC_SMBUS_READ_BYTE_DATA   0x00080000 
+#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA  0x00100000 
+#define I2C_FUNC_SMBUS_READ_WORD_DATA   0x00200000 
+#define I2C_FUNC_SMBUS_WRITE_WORD_DATA  0x00400000 
+#define I2C_FUNC_SMBUS_PROC_CALL        0x00800000 
+#define I2C_FUNC_SMBUS_READ_BLOCK_DATA  0x01000000 
 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 
-#define I2C_FUNC_SMBUS_READ_I2C_BLOCK	0x04000000 /* I2C-like block xfer  */
-#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK	0x08000000 /* w/ 1-byte reg. addr. */
-#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2	 0x10000000 /* I2C-like block xfer  */
+#define I2C_FUNC_SMBUS_READ_I2C_BLOCK   0x04000000 /* I2C-like block xfer  */
+#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK  0x08000000 /* w/ 1-byte reg. addr. */
+#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2  0x10000000 /* I2C-like block xfer  */
 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
-
-#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
-                             I2C_FUNC_SMBUS_WRITE_BYTE)
-#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
-                                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
-#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
-                                  I2C_FUNC_SMBUS_WRITE_WORD_DATA)
-#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
-                                   I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
-#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
-                                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
-#define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
-                                    I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
+#define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC  0x40000000 /* SMBus 2.0 */
+#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */
+
+#define I2C_FUNC_SMBUS_BYTE I2C_FUNC_SMBUS_READ_BYTE | \
+                            I2C_FUNC_SMBUS_WRITE_BYTE
+#define I2C_FUNC_SMBUS_BYTE_DATA I2C_FUNC_SMBUS_READ_BYTE_DATA | \
+                                 I2C_FUNC_SMBUS_WRITE_BYTE_DATA
+#define I2C_FUNC_SMBUS_WORD_DATA I2C_FUNC_SMBUS_READ_WORD_DATA | \
+                                 I2C_FUNC_SMBUS_WRITE_WORD_DATA
+#define I2C_FUNC_SMBUS_BLOCK_DATA I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
+                                  I2C_FUNC_SMBUS_WRITE_BLOCK_DATA
+#define I2C_FUNC_SMBUS_I2C_BLOCK I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
+                                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
+#define I2C_FUNC_SMBUS_I2C_BLOCK_2 I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
+                                   I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2
+#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \
+                                      I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC
+#define I2C_FUNC_SMBUS_WORD_DATA_PEC  I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \
+                                      I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC
+
+#define I2C_FUNC_SMBUS_READ_BYTE_PEC            I2C_FUNC_SMBUS_READ_BYTE_DATA
+#define I2C_FUNC_SMBUS_WRITE_BYTE_PEC           I2C_FUNC_SMBUS_WRITE_BYTE_DATA
+#define I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC       I2C_FUNC_SMBUS_READ_WORD_DATA
+#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA_PEC      I2C_FUNC_SMBUS_WRITE_WORD_DATA
+#define I2C_FUNC_SMBUS_BYTE_PEC                 I2C_FUNC_SMBUS_BYTE_DATA
+#define I2C_FUNC_SMBUS_BYTE_DATA_PEC            I2C_FUNC_SMBUS_WORD_DATA
+
+#define I2C_FUNC_SMBUS_EMUL I2C_FUNC_SMBUS_QUICK | \
+                            I2C_FUNC_SMBUS_BYTE | \
+                            I2C_FUNC_SMBUS_BYTE_DATA | \
+                            I2C_FUNC_SMBUS_WORD_DATA | \
+                            I2C_FUNC_SMBUS_PROC_CALL | \
+                            I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
+                            I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
+                            I2C_FUNC_SMBUS_I2C_BLOCK
 
 /* 
  * Data for SMBus Messages 
  */
-#define I2C_SMBUS_BLOCK_MAX	32	/* As specified in SMBus standard */	
-#define I2C_SMBUS_I2C_BLOCK_MAX	32	/* Not specified but we use same structure */
+#define I2C_SMBUS_BLOCK_MAX     32      /* As specified in SMBus standard */    
+#define I2C_SMBUS_I2C_BLOCK_MAX 32      /* Not specified but we use same structure */
 union i2c_smbus_data {
-	__u8 byte;
-	__u16 word;
-	__u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */
-	                                            /* and one more for PEC */
+        __u8 byte;
+        __u16 word;
+        __u8 block[I2C_SMBUS_BLOCK_MAX + 3]; /* block[0] is used for length */
+                          /* one more for read length in block process call */
+                                                    /* and one more for PEC */
 };
 
 /* smbus_access read or write markers */
-#define I2C_SMBUS_READ	1
-#define I2C_SMBUS_WRITE	0
+#define I2C_SMBUS_READ  1
+#define I2C_SMBUS_WRITE 0
 
 /* SMBus transaction types (size parameter in the above functions) 
    Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */
-#define I2C_SMBUS_QUICK		    0
-#define I2C_SMBUS_BYTE		    1
-#define I2C_SMBUS_BYTE_DATA	    2 
-#define I2C_SMBUS_WORD_DATA	    3
-#define I2C_SMBUS_PROC_CALL	    4
-#define I2C_SMBUS_BLOCK_DATA	    5
+#define I2C_SMBUS_QUICK             0
+#define I2C_SMBUS_BYTE              1
+#define I2C_SMBUS_BYTE_DATA         2 
+#define I2C_SMBUS_WORD_DATA         3
+#define I2C_SMBUS_PROC_CALL         4
+#define I2C_SMBUS_BLOCK_DATA        5
 #define I2C_SMBUS_I2C_BLOCK_DATA    6
-#define I2C_SMBUS_BLOCK_PROC_CALL   7		/* SMBus 2.0 */
+#define I2C_SMBUS_BLOCK_PROC_CALL   7           /* SMBus 2.0 */
+#define I2C_SMBUS_BLOCK_DATA_PEC    8           /* SMBus 2.0 */
+#define I2C_SMBUS_PROC_CALL_PEC     9           /* SMBus 2.0 */
+#define I2C_SMBUS_BLOCK_PROC_CALL_PEC  10       /* SMBus 2.0 */
+#define I2C_SMBUS_WORD_DATA_PEC    11           /* SMBus 2.0 */
 
 
 /* ----- commands for the ioctl like i2c_command call:
  * note that additional calls are defined in the algorithm and hw 
- *	dependent layers - these can be listed here, or see the 
- *	corresponding header files.
+ *      dependent layers - these can be listed here, or see the 
+ *      corresponding header files.
  */
-				/* -> bit-adapter specific ioctls	*/
-#define I2C_RETRIES	0x0701	/* number of times a device address      */
-				/* should be polled when not            */
-                                /* acknowledging 			*/
-#define I2C_TIMEOUT	0x0702	/* set timeout - call with int 		*/
-
-
-/* this is for i2c-dev.c	*/
-#define I2C_SLAVE	0x0703	/* Change slave address			*/
-				/* Attn.: Slave address is 7 or 10 bits */
-#define I2C_SLAVE_FORCE	0x0706	/* Change slave address			*/
-				/* Attn.: Slave address is 7 or 10 bits */
-				/* This changes the address, even if it */
-				/* is already taken!			*/
-#define I2C_TENBIT	0x0704	/* 0 for 7 bit addrs, != 0 for 10 bit	*/
-
-#define I2C_FUNCS	0x0705	/* Get the adapter functionality */
-#define I2C_RDWR	0x0707	/* Combined R/W transfer (one stop only)*/
-#define I2C_PEC		0x0708	/* != 0 for SMBus PEC                   */
-
-#define I2C_SMBUS	0x0720	/* SMBus-level access */
+                                /* -> bit-adapter specific ioctls       */
+#define I2C_RETRIES     0x0701  /* number of times a device address      */
+                                /* should be polled when not            */
+                                /* acknowledging                        */
+#define I2C_TIMEOUT     0x0702  /* set timeout - call with int          */
+
+
+/* this is for i2c-dev.c        */
+#define I2C_SLAVE       0x0703  /* Change slave address                 */
+                                /* Attn.: Slave address is 7 or 10 bits */
+#define I2C_SLAVE_FORCE 0x0706  /* Change slave address                 */
+                                /* Attn.: Slave address is 7 or 10 bits */
+                                /* This changes the address, even if it */
+                                /* is already taken!                    */
+#define I2C_TENBIT      0x0704  /* 0 for 7 bit addrs, != 0 for 10 bit   */
+
+#define I2C_FUNCS       0x0705  /* Get the adapter functionality */
+#define I2C_RDWR        0x0707  /* Combined R/W transfer (one stop only)*/
+#define I2C_PEC         0x0708  /* != 0 for SMBus PEC                   */
+#if 0
+#define I2C_ACK_TEST    0x0710  /* See if a slave is at a specific address */
+#endif
+
+#define I2C_SMBUS       0x0720  /* SMBus-level access */
 
 /* -- i2c.h -- */
 
@@ -144,99 +178,103 @@ union i2c_smbus_data {
 
 /* This is the structure as used in the I2C_SMBUS ioctl call */
 struct i2c_smbus_ioctl_data {
-	char read_write;
-	__u8 command;
-	int size;
-	union i2c_smbus_data *data;
+        char read_write;
+        __u8 command;
+        int size;
+        union i2c_smbus_data *data;
 };
 
 /* This is the structure as used in the I2C_RDWR ioctl call */
 struct i2c_rdwr_ioctl_data {
-	struct i2c_msg *msgs;	/* pointers to i2c_msgs */
-	int nmsgs;		/* number of i2c_msgs */
+        struct i2c_msg *msgs;   /* pointers to i2c_msgs */
+        int nmsgs;              /* number of i2c_msgs */
 };
 
 
 static inline __s32 i2c_smbus_access(int file, char read_write, __u8 command, 
                                      int size, union i2c_smbus_data *data)
 {
-	struct i2c_smbus_ioctl_data args;
+        struct i2c_smbus_ioctl_data args;
+    int rc;
+
+        args.read_write = read_write;
+        args.command = command;
+        args.size = size;
+        args.data = data;
 
-	args.read_write = read_write;
-	args.command = command;
-	args.size = size;
-	args.data = data;
-	return ioctl(file,I2C_SMBUS,&args);
+        rc = ioctl(file,I2C_SMBUS,&args);
+
+    return rc;
 }
 
 
 static inline __s32 i2c_smbus_write_quick(int file, __u8 value)
 {
-	return i2c_smbus_access(file,value,0,I2C_SMBUS_QUICK,NULL);
+        return i2c_smbus_access(file,value,0,I2C_SMBUS_QUICK,NULL);
 }
-	
+        
 static inline __s32 i2c_smbus_read_byte(int file)
 {
-	union i2c_smbus_data data;
-	if (i2c_smbus_access(file,I2C_SMBUS_READ,0,I2C_SMBUS_BYTE,&data))
-		return -1;
-	else
-		return 0x0FF & data.byte;
+        union i2c_smbus_data data;
+        if (i2c_smbus_access(file,I2C_SMBUS_READ,0,I2C_SMBUS_BYTE,&data))
+                return -1;
+        else
+                return 0x0FF & data.byte;
 }
 
 static inline __s32 i2c_smbus_write_byte(int file, __u8 value)
 {
-	return i2c_smbus_access(file,I2C_SMBUS_WRITE,value,
-	                        I2C_SMBUS_BYTE,NULL);
+        return i2c_smbus_access(file,I2C_SMBUS_WRITE,value,
+                                I2C_SMBUS_BYTE,NULL);
 }
 
 static inline __s32 i2c_smbus_read_byte_data(int file, __u8 command)
 {
-	union i2c_smbus_data data;
-	if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-	                     I2C_SMBUS_BYTE_DATA,&data))
-		return -1;
-	else
-		return 0x0FF & data.byte;
+        union i2c_smbus_data data;
+        if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
+                             I2C_SMBUS_BYTE_DATA,&data))
+                return -1;
+        else
+                return 0x0FF & data.byte;
 }
 
 static inline __s32 i2c_smbus_write_byte_data(int file, __u8 command, 
                                               __u8 value)
 {
-	union i2c_smbus_data data;
-	data.byte = value;
-	return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-	                        I2C_SMBUS_BYTE_DATA, &data);
+        union i2c_smbus_data data;
+        data.byte = value;
+        return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+                                I2C_SMBUS_BYTE_DATA, &data);
 }
 
 static inline __s32 i2c_smbus_read_word_data(int file, __u8 command)
 {
-	union i2c_smbus_data data;
-	if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-	                     I2C_SMBUS_WORD_DATA,&data))
-		return -1;
-	else
-		return 0x0FFFF & data.word;
+        union i2c_smbus_data data;
+        if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
+                             I2C_SMBUS_WORD_DATA,&data))
+                return -1;
+        else
+                return 0x0FFFF & data.word;
 }
 
 static inline __s32 i2c_smbus_write_word_data(int file, __u8 command, 
                                               __u16 value)
 {
-	union i2c_smbus_data data;
-	data.word = value;
-	return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-	                        I2C_SMBUS_WORD_DATA, &data);
+        union i2c_smbus_data data;
+        data.word = value;
+        return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+                                I2C_SMBUS_WORD_DATA, &data);
 }
 
 static inline __s32 i2c_smbus_process_call(int file, __u8 command, __u16 value)
 {
-	union i2c_smbus_data data;
-	data.word = value;
-	if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-	                     I2C_SMBUS_PROC_CALL,&data))
-		return -1;
-	else
-		return 0x0FFFF & data.word;
+        union i2c_smbus_data data;
+        data.word = value;
+        if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+                             I2C_SMBUS_PROC_CALL,&data))
+                return -1;
+        else
+                return 0x0FFFF & data.word;
 }
 
 
@@ -244,82 +282,84 @@ static inline __s32 i2c_smbus_process_call(int file, __u8 command, __u16 value)
 static inline __s32 i2c_smbus_read_block_data(int file, __u8 command, 
                                               __u8 *values)
 {
-	union i2c_smbus_data data;
-	int i;
-	if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-	                     I2C_SMBUS_BLOCK_DATA,&data))
-		return -1;
-	else {
-		for (i = 1; i <= data.block[0]; i++)
-			values[i-1] = data.block[i];
-		return data.block[0];
-	}
+        union i2c_smbus_data data;
+        int i;
+        if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
+                             I2C_SMBUS_BLOCK_DATA,&data))
+                return -1;
+        else {
+                for (i = 1; i <= data.block[0]; i++)
+                        values[i-1] = data.block[i];
+                return data.block[0];
+        }
 }
 
 static inline __s32 i2c_smbus_write_block_data(int file, __u8 command, 
                                                __u8 length, __u8 *values)
 {
-	union i2c_smbus_data data;
-	int i;
-	if (length > 32)
-		length = 32;
-	for (i = 1; i <= length; i++)
-		data.block[i] = values[i-1];
-	data.block[0] = length;
-	return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-	                        I2C_SMBUS_BLOCK_DATA, &data);
+        union i2c_smbus_data data;
+        int i;
+        if (length > 32)
+                length = 32;
+        for (i = 1; i <= length; i++)
+                data.block[i] = values[i-1];
+        data.block[0] = length;
+        return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+                                I2C_SMBUS_BLOCK_DATA, &data);
 }
 
 /* Returns the number of read bytes */
 static inline __s32 i2c_smbus_read_i2c_block_data(int file, __u8 command,
                                                   __u8 *values)
 {
-	union i2c_smbus_data data;
-	int i;
-	if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
-	                      I2C_SMBUS_I2C_BLOCK_DATA,&data))
-		return -1;
-	else {
-		for (i = 1; i <= data.block[0]; i++)
-			values[i-1] = data.block[i];
-		return data.block[0];
-	}
+        union i2c_smbus_data data;
+        int i;
+        if (i2c_smbus_access(file,I2C_SMBUS_READ,command,
+                              I2C_SMBUS_I2C_BLOCK_DATA,&data))
+                return -1;
+        else {
+                for (i = 1; i <= data.block[0]; i++)
+                        values[i-1] = data.block[i];
+                return data.block[0];
+        }
 }
 
 static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command,
                                                __u8 length, __u8 *values)
 {
-	union i2c_smbus_data data;
-	int i;
-	if (length > 32)
-		length = 32;
-	for (i = 1; i <= length; i++)
-		data.block[i] = values[i-1];
-	data.block[0] = length;
-	return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-	                        I2C_SMBUS_I2C_BLOCK_DATA, &data);
+        union i2c_smbus_data data;
+        int i;
+        if (length > 32)
+                length = 32;
+        for (i = 1; i <= length; i++)
+                data.block[i] = values[i-1];
+        data.block[0] = length;
+        return i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+                                I2C_SMBUS_I2C_BLOCK_DATA, &data);
 }
 
 /* Returns the number of read bytes */
 static inline __s32 i2c_smbus_block_process_call(int file, __u8 command,
                                                  __u8 length, __u8 *values)
 {
-	union i2c_smbus_data data;
-	int i;
-	if (length > 32)
-		length = 32;
-	for (i = 1; i <= length; i++)
-		data.block[i] = values[i-1];
-	data.block[0] = length;
-	if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
-	                     I2C_SMBUS_BLOCK_PROC_CALL,&data))
-		return -1;
-	else {
-		for (i = 1; i <= data.block[0]; i++)
-			values[i-1] = data.block[i];
-		return data.block[0];
-	}
+        union i2c_smbus_data data;
+        int i;
+        if (length > 32)
+                length = 32;
+        for (i = 1; i <= length; i++)
+                data.block[i] = values[i-1];
+        data.block[0] = length;
+    i = i2c_smbus_access(file,I2C_SMBUS_WRITE,command,
+                             I2C_SMBUS_BLOCK_PROC_CALL,&data);
+    if ( i )
+                return -1;
+        else {
+                for (i = 1; i <= data.block[0]; i++)
+                        values[i-1] = data.block[i];
+                return data.block[0];
+        }
 }
 
 
 #endif /* LIB_I2CDEV_H */
+