[PATCH] i2c: scx200_acb whitespace and comment cleanup

scx200_acb: Whitespace and comment cleanup

Signed-off-by: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index d3478e0..f45779b 100644 (file)
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -1,27 +1,25 @@
-/*  linux/drivers/i2c/scx200_acb.c 
-
+/*
     Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com>
 
     National Semiconductor SCx200 ACCESS.bus support
-    
+
     Based on i2c-keywest.c which is:
         Copyright (c) 2001 Benjamin Herrenschmidt <benh@kernel.crashing.org>
         Copyright (c) 2000 Philip Edelbrock <phil@stimpy.netroedge.com>
-    
+
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
     published by the Free Software Foundation; either version 2 of the
     License, or (at your option) any later version.
-   
+
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     General Public License for more details.
-   
+
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
 */
 
 #include <linux/module.h>
@@ -79,8 +77,7 @@ static const char *scx200_acb_state_name[] = {
 };
 
 /* Physical interface */
-struct scx200_acb_iface
-{
+struct scx200_acb_iface {
        struct scx200_acb_iface *next;
        struct i2c_adapter adapter;
        unsigned base;
@@ -100,7 +97,7 @@ struct scx200_acb_iface
 #define ACBSDA         (iface->base + 0)
 #define ACBST          (iface->base + 1)
 #define    ACBST_SDAST         0x40 /* SDA Status */
-#define    ACBST_BER           0x20 
+#define    ACBST_BER           0x20
 #define    ACBST_NEGACK                0x10 /* Negative Acknowledge */
 #define    ACBST_STASTR                0x08 /* Stall After Start */
 #define    ACBST_MASTER                0x02
@@ -109,9 +106,9 @@ struct scx200_acb_iface
 #define ACBCTL1                (iface->base + 3)
 #define    ACBCTL1_STASTRE     0x80
 #define    ACBCTL1_NMINTE      0x40
-#define           ACBCTL1_ACK          0x10
-#define           ACBCTL1_STOP         0x02
-#define           ACBCTL1_START        0x01
+#define    ACBCTL1_ACK         0x10
+#define    ACBCTL1_STOP                0x02
+#define    ACBCTL1_START       0x01
 #define ACBADDR                (iface->base + 4)
 #define ACBCTL2                (iface->base + 5)
 #define    ACBCTL2_ENABLE      0x01
@@ -122,7 +119,7 @@ static void scx200_acb_machine(struct scx200_acb_iface *iface, u8 status)
 {
        const char *errmsg;
 
-       DBG("state %s, status = 0x%02x\n", 
+       DBG("state %s, status = 0x%02x\n",
            scx200_acb_state_name[iface->state], status);
 
        if (status & ACBST_BER) {
@@ -160,10 +157,10 @@ static void scx200_acb_machine(struct scx200_acb_iface *iface, u8 status)
        case state_repeat_start:
                outb(inb(ACBCTL1) | ACBCTL1_START, ACBCTL1);
                /* fallthrough */
-               
+
        case state_quick:
                if (iface->address_byte & 1) {
-                       if (iface->len == 1) 
+                       if (iface->len == 1)
                                outb(inb(ACBCTL1) | ACBCTL1_ACK, ACBCTL1);
                        else
                                outb(inb(ACBCTL1) & ~ACBCTL1_ACK, ACBCTL1);
@@ -202,17 +199,17 @@ static void scx200_acb_machine(struct scx200_acb_iface *iface, u8 status)
                        outb(inb(ACBCTL1) | ACBCTL1_STOP, ACBCTL1);
                        break;
                }
-               
+
                outb(*iface->ptr++, ACBSDA);
                --iface->len;
-               
+
                break;
        }
 
        return;
 
  negack:
-       DBG("negative acknowledge in state %s\n", 
+       DBG("negative acknowledge in state %s\n",
            scx200_acb_state_name[iface->state]);
 
        iface->state = state_idle;
@@ -231,7 +228,7 @@ static void scx200_acb_machine(struct scx200_acb_iface *iface, u8 status)
        iface->needs_reset = 1;
 }
 
-static void scx200_acb_timeout(struct scx200_acb_iface *iface) 
+static void scx200_acb_timeout(struct scx200_acb_iface *iface)
 {
        dev_err(&iface->adapter.dev, "timeout in state %s\n",
                scx200_acb_state_name[iface->state]);
@@ -264,7 +261,7 @@ static void scx200_acb_poll(struct scx200_acb_iface *iface)
 static void scx200_acb_reset(struct scx200_acb_iface *iface)
 {
        /* Disable the ACCESS.bus device and Configure the SCL
-           frequency: 16 clock cycles */
+          frequency: 16 clock cycles */
        outb(0x70, ACBCTL2);
        /* Polling mode */
        outb(0, ACBCTL1);
@@ -283,9 +280,9 @@ static void scx200_acb_reset(struct scx200_acb_iface *iface)
 }
 
 static s32 scx200_acb_smbus_xfer(struct i2c_adapter *adapter,
-                               u16 address, unsigned short flags,      
-                               char rw, u8 command, int size, 
-                               union i2c_smbus_data *data)
+                                u16 address, unsigned short flags,
+                                char rw, u8 command, int size,
+                                union i2c_smbus_data *data)
 {
        struct scx200_acb_iface *iface = i2c_get_adapdata(adapter);
        int len;
@@ -295,9 +292,10 @@ static s32 scx200_acb_smbus_xfer(struct i2c_adapter *adapter,
 
        switch (size) {
        case I2C_SMBUS_QUICK:
-               len = 0;
-               buffer = NULL;
-               break;
+               len = 0;
+               buffer = NULL;
+               break;
+
        case I2C_SMBUS_BYTE:
                if (rw == I2C_SMBUS_READ) {
                        len = 1;
@@ -306,22 +304,26 @@ static s32 scx200_acb_smbus_xfer(struct i2c_adapter *adapter,
                        len = 1;
                        buffer = &command;
                }
-               break;
+               break;
+
        case I2C_SMBUS_BYTE_DATA:
-               len = 1;
-               buffer = &data->byte;
-               break;
+               len = 1;
+               buffer = &data->byte;
+               break;
+
        case I2C_SMBUS_WORD_DATA:
                len = 2;
-               cur_word = cpu_to_le16(data->word);
-               buffer = (u8 *)&cur_word;
+               cur_word = cpu_to_le16(data->word);
+               buffer = (u8 *)&cur_word;
                break;
+
        case I2C_SMBUS_BLOCK_DATA:
-               len = data->block[0];
-               buffer = &data->block[1];
+               len = data->block[0];
+               buffer = &data->block[1];
                break;
+
        default:
-               return -EINVAL;
+               return -EINVAL;
        }
 
        DBG("size=%d, address=0x%x, command=0x%x, len=%d, read=%d\n",
@@ -370,7 +372,7 @@ static s32 scx200_acb_smbus_xfer(struct i2c_adapter *adapter,
        up(&iface->sem);
 
        if (rc == 0 && size == I2C_SMBUS_WORD_DATA && rw == I2C_SMBUS_READ)
-               data->word = le16_to_cpu(cur_word);
+               data->word = le16_to_cpu(cur_word);
 
 #ifdef DEBUG
        DBG(": transfer done, result: %d", rc);
@@ -406,7 +408,7 @@ static int scx200_acb_probe(struct scx200_acb_iface *iface)
        u8 val;
 
        /* Disable the ACCESS.bus device and Configure the SCL
-           frequency: 16 clock cycles */
+          frequency: 16 clock cycles */
        outb(0x70, ACBCTL2);
 
        if (inb(ACBCTL2) != 0x70) {
@@ -459,7 +461,8 @@ static int  __init scx200_acb_create(int base, int index)
 
        init_MUTEX(&iface->sem);
 
-       snprintf(description, sizeof(description), "NatSemi SCx200 ACCESS.bus [%s]", adapter->name);
+       snprintf(description, sizeof(description),
+                "NatSemi SCx200 ACCESS.bus [%s]", adapter->name);
        if (request_region(base, 8, description) == 0) {
                dev_err(&adapter->dev, "can't allocate io 0x%x-0x%x\n",
                        base, base + 8-1);
@@ -528,6 +531,7 @@ static int __init scx200_acb_init(void)
 static void __exit scx200_acb_cleanup(void)
 {
        struct scx200_acb_iface *iface;
+
        lock_kernel();
        while ((iface = scx200_acb_list) != NULL) {
                scx200_acb_list = iface->next;
@@ -543,11 +547,3 @@ static void __exit scx200_acb_cleanup(void)
 
 module_init(scx200_acb_init);
 module_exit(scx200_acb_cleanup);
-
-/*
-    Local variables:
-        compile-command: "make -k -C ../.. SUBDIRS=drivers/i2c modules"
-        c-basic-offset: 8
-    End:
-*/
-