Patch by Vasilis Kaoutsis - thanks!:

* Fixed some warnings.
* Style cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21774 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/accelerants/common/ddc.c

@@ -1,32 +1,40 @@
 /*
-	Copyright (c) 2003, Thomas Kurschel
+ * Copyright 2003, Thomas Kurschel. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
 
 
+/*!
 	Part of DDC driver	
-		
 	Main DDC communication
 */
 
-#include <OS.h>
-#include <KernelExport.h>
-#include <stdlib.h>
+
 #include "ddc_int.h"
 #include "ddc.h"
-
 #include "i2c.h"
 
-// number of retries to read ddc data
-#define READ_RETRIES 4
+#include <KernelExport.h>
+#include <OS.h>
 
-// verify checksum of ddc data
-// (some monitors have a broken checksum - bad luck for them)
-static status_t verify_checksum( const uint8 *data, size_t len )
+#include <stdlib.h>
+
+
+#define READ_RETRIES 4
+	// number of retries to read ddc data
+
+#if 0
+/*!	Verify checksum of ddc data
+	(some monitors have a broken checksum - bad luck for them)
+*/
+static status_t
+verify_checksum(const uint8 *data, size_t len)
 {
-	int i;
+	uint32 index;
 	uint8 sum = 0;
 	uint8 all_or = 0;
 	
-	for( i = 0; i < len; ++i, ++data ) {
+	for (index = 0; index < len; ++index, ++data) {
 		sum += *data;
 		all_or |= *data;
 	}
@@ -43,14 +51,17 @@ static status_t verify_checksum( const uint8 *data, size_t len )
 		
 	return B_OK;
 }
+#endif
 
-// read ddc2 data from monitor
-static status_t ddc2_read( const i2c_bus *bus, int start, uint8 *buffer, size_t len )
+
+//!	Read ddc2 data from monitor
+static status_t
+ddc2_read(const i2c_bus *bus, int start, uint8 *buffer, size_t len)
 {
 	uint8 write_buffer[2];
 	i2c_timing timing;
 	int i;
-	status_t res;
+	status_t res = B_OK;
 
 	write_buffer[0] = start & 0xff;	
 	write_buffer[1] = (start >> 8) & 0xff;
@@ -78,11 +89,14 @@ static status_t ddc2_read( const i2c_bus *bus, int start, uint8 *buffer, size_t
 }
 
 
-// reading VDIF has not been tested. 
-// it seems that almost noone supports VDIF which makes testing hard,
-// but what's the point anyway?
+/*!
+	Reading VDIF has not been tested. 
+	it seems that almost noone supports VDIF which makes testing hard,
+	but what's the point anyway?
+*/
 #if 0
-static status_t ddc2_read_vdif( const i2c_bus *bus, int start, 
+static status_t
+ddc2_read_vdif(const i2c_bus *bus, int start, 
 	void **vdif, size_t *vdif_len)
 {
 	status_t res;
@@ -118,8 +132,10 @@ static status_t ddc2_read_vdif( const i2c_bus *bus, int start,
 }
 #endif
 
-// read EDID and VDIF from monitor via ddc2
-status_t ddc2_read_edid1( const i2c_bus *bus, edid1_info *edid, 
+
+//! Read EDID and VDIF from monitor via ddc2
+status_t
+ddc2_read_edid1(const i2c_bus *bus, edid1_info *edid, 
 	void **vdif, size_t *vdif_len)
 {
 	status_t res;

src/add-ons/accelerants/common/ddc_int.h

@@ -1,14 +1,20 @@
 /*
-	Copyright (c) 2003, Thomas Kurschel
+ * Copyright 2003, Thomas Kurschel. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef DDC_INT_H
+#define DDC_INT_H
 
 
+/*!
 	Part of DDC driver	
-		
 	Internal header
 */
 
-// no dprintf in user space, but if you know the trick ;)
+
 void _sPrintf(const char *format, ...);
+	// no dprintf in user space, but if you know the trick ;)
+
 //bool    set_dprintf_enabled(bool);	/* returns old enable flag */
 
 #define dprintf _sPrintf
@@ -21,3 +27,5 @@ void    _sPrintf(const char *format, ...);
 #define DEBUG_MSG_PREFIX "DDC "
 
 #include "debug_ext.h"
+
+#endif	// DDC_INT_H

src/add-ons/accelerants/common/decode_edid.c

@@ -1,8 +1,9 @@
 /*
- * Copyright (c) 2003, Thomas Kurschel. All Rights Reserved.
+ * Copyright 2003, Thomas Kurschel. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 
+
 /*!
 	Part of DDC driver
 
@@ -16,6 +17,7 @@
 #include "edid.h"
 
 #include <KernelExport.h>
+
 #include <string.h>
 
 
@@ -89,12 +91,15 @@ decode_std_timing(edid1_std_timing *timing, const edid1_std_timing_raw *raw)
 		case 0:
 			timing->v_size = timing->h_size;
 			break;
+
 		case 1:
 			timing->v_size = timing->h_size * 3 / 4;
 			break;
+
 		case 2:
 			timing->v_size = timing->h_size * 4 / 5;
 			break;
+
 		case 3:
 			timing->v_size = timing->h_size * 9 / 16;
 			break;
@@ -191,21 +196,26 @@ decode_detailed_monitor( edid1_detailed_monitor *monitor,
 					copy_str( monitor->data.serial_number, 
 						raw->extra.data.serial_number, EDID1_EXTRA_STRING_LEN );
 					break;
+
 				case edid1_ascii_data:
 					copy_str( monitor->data.ascii_data, 
 						raw->extra.data.ascii_data, EDID1_EXTRA_STRING_LEN );
 					break;
+
 				case edid1_monitor_ranges:
 					monitor->data.monitor_range = raw->extra.data.monitor_range;
 					break;
+
 				case edid1_monitor_name:
 					copy_str( monitor->data.monitor_name, 
 						raw->extra.data.monitor_name, EDID1_EXTRA_STRING_LEN );
 					break;
+
 				case edid1_add_colour_pointer:
 					decode_whitepoint( monitor->data.whitepoint, 
 						&raw->extra.data.whitepoint );
 					break;
+
 				case edid1_add_std_timing:
 					for (j = 0; j < EDID1_NUM_EXTRA_STD_TIMING; ++j) {
 						decode_std_timing(&monitor->data.std_timing[j],
@@ -224,7 +234,7 @@ decode_detailed_monitor( edid1_detailed_monitor *monitor,
 //	#pragma mark -
 
 
-//! main function to decode edid data
+//!	Main function to decode edid data
 void
 edid_decode(edid1_info *edid, const edid1_raw *raw)
 {

src/add-ons/accelerants/common/dump_edid.c

@@ -3,11 +3,13 @@
  * Distributed under the terms of the MIT License.
  */
 
+
 /*!
 	Part of DDC driver
 	Dumps EDID content
 */
 
+
 #include "edid.h"
 #if !defined(_KERNEL_MODE) && !defined(_BOOT_MODE)
 #	include "ddc_int.h"
@@ -91,10 +93,13 @@ edid_dump(edid1_info *edid)
 			case edid1_serial_number:
 				dprintf("Serial Number: %s\n", monitor->data.serial_number);
 				break;
+
 			case edid1_ascii_data:
 				dprintf(" %s\n", monitor->data.serial_number);
 				break;
-			case edid1_monitor_ranges: {
+
+			case edid1_monitor_ranges:
+			{
 				edid1_monitor_range monitor_range = monitor->data.monitor_range;
 
 				dprintf("Horizontal frequency range = %d..%d kHz\n",
@@ -104,10 +109,13 @@ edid_dump(edid1_info *edid)
 				dprintf("Maximum pixel clock = %d MHz\n", (uint16)monitor_range.max_clock * 10);
 				break;
 			}
+
 			case edid1_monitor_name:
 				dprintf("Monitor Name: %s\n", monitor->data.serial_number);
 				break;
-			case edid1_add_colour_pointer: {
+
+			case edid1_add_colour_pointer:
+			{
 				for (j = 0; j < EDID1_NUM_EXTRA_WHITEPOINTS; ++j) {
 					edid1_whitepoint *whitepoint = &monitor->data.whitepoint[j];
 
@@ -122,7 +130,9 @@ edid_dump(edid1_info *edid)
 				}
 				break;
 			}
-			case edid1_add_std_timing: {		
+
+			case edid1_add_std_timing:
+			{		
 				for (j = 0; j < EDID1_NUM_EXTRA_STD_TIMING; ++j) {
 					edid1_std_timing *timing = &monitor->data.std_timing[j];
 
@@ -135,7 +145,9 @@ edid_dump(edid1_info *edid)
 				}
 				break;
 			}
-			case edid1_is_detailed_timing: {
+
+			case edid1_is_detailed_timing:
+			{
 				edid1_detailed_timing *timing = &monitor->data.detailed_timing;
 
 				dprintf("Additional Video Mode:\n");

src/add-ons/accelerants/common/i2c.c

@@ -1,24 +1,28 @@
 /*
-	Copyright (c) 2003, Thomas Kurschel
+ * Copyright 2003, Thomas Kurschel. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
 
 
+/*!
 	Part of DDC driver	
-		
 	I2C protocoll
 */
 
-#include <OS.h>
-#include <KernelExport.h>
-
+#include "ddc_int.h"
 #include "i2c.h"
 
-#include "ddc_int.h"
+#include <KernelExport.h>
+#include <OS.h>
 
 
-// there's no spin in user space, but we need it to wait a couple 
-// of microseconds only
-// (in this case, snooze has much too much overhead)
-void spin( bigtime_t delay )
+/*!
+	There's no spin in user space, but we need it to wait a couple 
+	of microseconds only
+	(in this case, snooze has much too much overhead)
+*/
+void
+spin(bigtime_t delay)
 {
 	bigtime_t start_time = system_time();
 	
@@ -27,8 +31,9 @@ void spin( bigtime_t delay )
 }
 
 
-// wait until slave releases clock signal ("clock stretching")
-static status_t wait_for_clk( const i2c_bus *bus, const i2c_timing *timing, 
+//! Wait until slave releases clock signal ("clock stretching")
+static status_t
+wait_for_clk(const i2c_bus *bus, const i2c_timing *timing, 
 	bigtime_t timeout)
 {
 	bigtime_t start_time;
@@ -53,8 +58,9 @@ static status_t wait_for_clk( const i2c_bus *bus, const i2c_timing *timing,
 }
 
 
-// send start or repeated start condition
-static status_t send_start_condition( const i2c_bus *bus, const i2c_timing *timing )
+//!	Send start or repeated start condition
+static status_t
+send_start_condition(const i2c_bus *bus, const i2c_timing *timing)
 {
 	status_t res;
 
@@ -76,8 +82,9 @@ static status_t send_start_condition( const i2c_bus *bus, const i2c_timing *timi
 }
 
 
-// send stop condition
-static status_t send_stop_condition( const i2c_bus *bus, const i2c_timing *timing )
+//!	Send stop condition
+static status_t
+send_stop_condition(const i2c_bus *bus, const i2c_timing *timing)
 {
 	status_t res;
 
@@ -103,8 +110,9 @@ static status_t send_stop_condition( const i2c_bus *bus, const i2c_timing *timin
 }
 
 
-// send one bit
-static status_t send_bit( const i2c_bus *bus, const i2c_timing *timing, bool bit, int timeout )
+//!	Send one bit
+static status_t
+send_bit(const i2c_bus *bus, const i2c_timing *timing, bool bit, int timeout)
 {
 	status_t res;
 
@@ -128,8 +136,9 @@ static status_t send_bit( const i2c_bus *bus, const i2c_timing *timing, bool bit
 }
 
 
-// send acknowledge and wait for reply
-static status_t send_acknowledge( const i2c_bus *bus, const i2c_timing *timing )
+//!	Send acknowledge and wait for reply
+static status_t
+send_acknowledge(const i2c_bus *bus, const i2c_timing *timing)
 {
 	status_t res;
 	bigtime_t start_time;
@@ -177,8 +186,9 @@ static status_t send_acknowledge( const i2c_bus *bus, const i2c_timing *timing )
 }
 
 
-// send byte and wait for acknowledge if <ackowledge> is true
-static status_t send_byte( const i2c_bus *bus, const i2c_timing *timing,
+//!	Send byte and wait for acknowledge if <ackowledge> is true
+static status_t
+send_byte(const i2c_bus *bus, const i2c_timing *timing,
 	uint8 byte, bool acknowledge)
 {
 	int i;
@@ -200,9 +210,11 @@ static status_t send_byte( const i2c_bus *bus, const i2c_timing *timing,
 		return B_OK;
 }
 
-// send slave address, obeying 10-bit addresses and general call addresses
-static status_t send_slave_address( const i2c_bus *bus, 
-	const i2c_timing *timing, int slave_address, bool is_write )
+
+//!	Send slave address, obeying 10-bit addresses and general call addresses
+static status_t
+send_slave_address( const i2c_bus *bus, const i2c_timing *timing,
+	int slave_address, bool is_write )
 {
 	status_t res;
 	
@@ -221,24 +233,24 @@ static status_t send_slave_address( const i2c_bus *bus,
 	// - 1111 0xxx - 10 bit address  (second byte contains remaining 8 bits)
 	
 	// the lsb is 0 for write and 1 for read (except for general call address)
-	if( (slave_address & 0xff) != 0 &&
-		(slave_address & 0xf8) != 0xf0 )
+	if ((slave_address & 0xff) != 0 && (slave_address & 0xf8) != 0xf0)
 		return B_OK;
 
-	// send second byte if required		
 	return send_byte(bus, timing, slave_address >> 8, true);
+		// send second byte if required
 }
 
 
-// receive one bit
-static status_t receive_bit( const i2c_bus *bus, const i2c_timing *timing, 
+//!	Receive one bit
+static status_t
+receive_bit(const i2c_bus *bus, const i2c_timing *timing, 
 	bool *bit, int timeout)
 {
 	status_t res;
 	int clk, data;
 
-	// release clock
 	bus->set_signals(bus->cookie, 1, 1);
+		// release clock
 
 	// wait for slave to raise clock
 	res = wait_for_clk(bus, timing, timeout);
@@ -247,23 +259,30 @@ static status_t receive_bit( const i2c_bus *bus, const i2c_timing *timing,
 		return res;
 	}
 
-	// sample data
 	bus->get_signals(bus->cookie, &clk, &data);
-	// leave clock high for minimal time
+		// sample data
+
 	spin(timing->high);
-	// pull clock low so slave waits for us before next bit
+		// leave clock high for minimal time
+
 	bus->set_signals(bus->cookie, 0, 1);
+		// pull clock low so slave waits for us before next bit
+
+	spin(timing->f + timing->low);
 		// let it settle and leave it low for minimal time
 		// to make sure slave has finished bit transmission too
-	spin( timing->f + timing->low);
 
 	*bit = data;	
 	return B_OK;
 }
 
-// receive byte
-// send positive acknowledge afterwards if <acknowledge> is true, else send negative one
-static status_t receive_byte( const i2c_bus *bus, const i2c_timing *timing, 
+
+/*!	receive byte
+	Send positive acknowledge afterwards if <acknowledge> is true,
+	else send negative one
+*/
+static status_t
+receive_byte(const i2c_bus *bus, const i2c_timing *timing, 
 	uint8 *res_byte, bool acknowledge)
 {
 	uint8 byte = 0;
@@ -291,8 +310,10 @@ static status_t receive_byte( const i2c_bus *bus, const i2c_timing *timing,
 	return send_bit(bus, timing, acknowledge ? 0 : 1, timing->bit_timeout);
 }
 
-// send multiple bytes
-static status_t send_bytes( const i2c_bus *bus, const i2c_timing *timing, 
+
+//!	Send multiple bytes
+static status_t
+send_bytes(const i2c_bus *bus, const i2c_timing *timing, 
 	const uint8 *write_buffer, ssize_t write_len)
 {
 	SHOW_FLOW( 3, "len=%ld", write_len );
@@ -308,8 +329,10 @@ static status_t send_bytes( const i2c_bus *bus, const i2c_timing *timing,
 	return B_OK;
 }
 
-// receive multiple bytes
-static status_t receive_bytes( const i2c_bus *bus, const i2c_timing *timing, 
+
+//!	Receive multiple bytes
+static status_t
+receive_bytes(const i2c_bus *bus, const i2c_timing *timing, 
 	uint8 *read_buffer, ssize_t read_len)
 {
 	SHOW_FLOW(3, "len=%ld", read_len);
@@ -325,10 +348,11 @@ static status_t receive_bytes( const i2c_bus *bus, const i2c_timing *timing,
 	return B_OK;
 }
 
-// combined i2c send+receive format
-status_t i2c_send_receive( const i2c_bus *bus, const i2c_timing *timing,
-	int slave_address, 
-	const uint8 *write_buffer, size_t write_len, 
+
+//!	Combined i2c send+receive format
+status_t
+i2c_send_receive(const i2c_bus *bus, const i2c_timing *timing,
+	int slave_address, const uint8 *write_buffer, size_t write_len, 
 	uint8 *read_buffer, size_t read_len)
 {
 	status_t res;
@@ -366,9 +390,9 @@ err:
 	return res;
 }
 
-// timining for 100kHz bus (fractional parts are rounded up)
-i2c_timing i2c_timing_100k = 
-{
+
+//!	Timining for 100kHz bus (fractional parts are rounded up)
+i2c_timing i2c_timing_100k = {
 	buf : 5,
 	hd_sta : 4,
 	low : 5,
@@ -390,8 +414,7 @@ i2c_timing i2c_timing_100k =
 
 // timing for 400 kHz bus
 // (argh! heavy up-rounding here)
-i2c_timing i2c_timing_400k = 
-{
+i2c_timing i2c_timing_400k = {
 	buf : 2,
 	hd_sta : 1,
 	low : 2,
@@ -411,12 +434,16 @@ i2c_timing i2c_timing_400k =
 	ack_timeout : 2
 };
 
-void i2c_get100k_timing( i2c_timing *timing )
+
+void
+i2c_get100k_timing(i2c_timing *timing)
 {
 	*timing = i2c_timing_100k;
 }
 
-void i2c_get400k_timing( i2c_timing *timing )
+
+void
+i2c_get400k_timing(i2c_timing *timing)
 {
 	*timing = i2c_timing_400k;
 }