staging: sm750fb: Clean up variable names

Variables in sm750_accel.c follow a mix of camelCase convention
and Hungarian shorthands. Rename it to adhere to kernel's snake_case
naming convention and improve readability.

Signed-off-by: Christine Ramacha <christine.rv4573@gmail.com>
Link: https://patch.msgid.link/20260204145107.5521-1-christine.rv4573@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Chris-ops4573

drivers/staging/sm750fb/sm750_accel.c

@@ -27,7 +27,7 @@ static inline u32 read_dpr(struct lynx_accel *accel, int offset)
 	return readl(accel->dpr_base + offset);
 }
 
-static inline void write_dpPort(struct lynx_accel *accel, u32 data)
+static inline void write_dp_port(struct lynx_accel *accel, u32 data)
 {
 	writel(data, accel->dp_port_base);
 }
@@ -132,12 +132,12 @@ int sm750_hw_fillrect(struct lynx_accel *accel,
 /**
  * sm750_hw_copyarea
  * @accel: Acceleration device data
- * @sBase: Address of source: offset in frame buffer
- * @sPitch: Pitch value of source surface in BYTE
+ * @source_base: Address of source: offset in frame buffer
+ * @source_pitch: Pitch value of source surface in BYTE
  * @sx: Starting x coordinate of source surface
  * @sy: Starting y coordinate of source surface
- * @dBase: Address of destination: offset in frame buffer
- * @dPitch: Pitch value of destination surface in BYTE
+ * @dest_base: Address of destination: offset in frame buffer
+ * @dest_pitch: Pitch value of destination surface in BYTE
  * @Bpp: Color depth of destination surface
  * @dx: Starting x coordinate of destination surface
  * @dy: Starting y coordinate of destination surface
@@ -146,21 +146,21 @@ int sm750_hw_fillrect(struct lynx_accel *accel,
  * @rop2: ROP value
  */
 int sm750_hw_copyarea(struct lynx_accel *accel,
-		      unsigned int sBase, unsigned int sPitch,
+		      unsigned int source_base, unsigned int source_pitch,
 		      unsigned int sx, unsigned int sy,
-		      unsigned int dBase, unsigned int dPitch,
+		      unsigned int dest_base, unsigned int dest_pitch,
 		      unsigned int Bpp, unsigned int dx, unsigned int dy,
 		      unsigned int width, unsigned int height,
 		      unsigned int rop2)
 {
-	unsigned int nDirection, de_ctrl;
+	unsigned int direction, de_ctrl;
 
-	nDirection = LEFT_TO_RIGHT;
+	direction = LEFT_TO_RIGHT;
 	/* Direction of ROP2 operation: 1 = Left to Right, (-1) = Right to Left */
 	de_ctrl = 0;
 
 	/* If source and destination are the same surface, need to check for overlay cases */
-	if (sBase == dBase && sPitch == dPitch) {
+	if (source_base == dest_base && source_pitch == dest_pitch) {
 		/* Determine direction of operation */
 		if (sy < dy) {
 			/*  +----------+
@@ -173,7 +173,7 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
 			 *	+----------+
 			 */
 
-			nDirection = BOTTOM_TO_TOP;
+			direction = BOTTOM_TO_TOP;
 		} else if (sy > dy) {
 			/*  +----------+
 			 *  |D         |
@@ -185,7 +185,7 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
 			 *	+----------+
 			 */
 
-			nDirection = TOP_TO_BOTTOM;
+			direction = TOP_TO_BOTTOM;
 		} else {
 			/* sy == dy */
 
@@ -198,7 +198,7 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
 				 * +------+---+------+
 				 */
 
-				nDirection = RIGHT_TO_LEFT;
+				direction = RIGHT_TO_LEFT;
 			} else {
 			/* sx > dx */
 
@@ -210,12 +210,12 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
 				 * +------+---+------+
 				 */
 
-				nDirection = LEFT_TO_RIGHT;
+				direction = LEFT_TO_RIGHT;
 			}
 		}
 	}
 
-	if ((nDirection == BOTTOM_TO_TOP) || (nDirection == RIGHT_TO_LEFT)) {
+	if ((direction == BOTTOM_TO_TOP) || (direction == RIGHT_TO_LEFT)) {
 		sx += width - 1;
 		sy += height - 1;
 		dx += width - 1;
@@ -234,34 +234,34 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
 	 * It is an address offset (128 bit aligned)
 	 * from the beginning of frame buffer.
 	 */
-	write_dpr(accel, DE_WINDOW_SOURCE_BASE, sBase); /* dpr40 */
+	write_dpr(accel, DE_WINDOW_SOURCE_BASE, source_base); /* dpr40 */
 
 	/*
 	 * 2D Destination Base.
 	 * It is an address offset (128 bit aligned)
 	 * from the beginning of frame buffer.
 	 */
-	write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dBase); /* dpr44 */
+	write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dest_base); /* dpr44 */
 
 	/*
 	 * Program pitch (distance between the 1st points of two adjacent lines).
 	 * Note that input pitch is BYTE value, but the 2D Pitch register uses
 	 * pixel values. Need Byte to pixel conversion.
 	 */
 	write_dpr(accel, DE_PITCH,
-		  ((dPitch / Bpp << DE_PITCH_DESTINATION_SHIFT) &
+		  ((dest_pitch / Bpp << DE_PITCH_DESTINATION_SHIFT) &
 		   DE_PITCH_DESTINATION_MASK) |
-		  (sPitch / Bpp & DE_PITCH_SOURCE_MASK)); /* dpr10 */
+		  (source_pitch / Bpp & DE_PITCH_SOURCE_MASK)); /* dpr10 */
 
 	/*
 	 * Screen Window width in Pixels.
 	 * 2D engine uses this value to calculate the linear address in frame buffer
 	 * for a given point.
 	 */
 	write_dpr(accel, DE_WINDOW_WIDTH,
-		  ((dPitch / Bpp << DE_WINDOW_WIDTH_DST_SHIFT) &
+		  ((dest_pitch / Bpp << DE_WINDOW_WIDTH_DST_SHIFT) &
 		   DE_WINDOW_WIDTH_DST_MASK) |
-		  (sPitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr3c */
+		  (source_pitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr3c */
 
 	if (accel->de_wait() != 0)
 		return -1;
@@ -277,7 +277,7 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
 		  (height & DE_DIMENSION_Y_ET_MASK)); /* dpr08 */
 
 	de_ctrl = (rop2 & DE_CONTROL_ROP_MASK) | DE_CONTROL_ROP_SELECT |
-		((nDirection == RIGHT_TO_LEFT) ? DE_CONTROL_DIRECTION : 0) |
+		((direction == RIGHT_TO_LEFT) ? DE_CONTROL_DIRECTION : 0) |
 		DE_CONTROL_COMMAND_BITBLT | DE_CONTROL_STATUS;
 	write_dpr(accel, DE_CONTROL, de_ctrl); /* dpr0c */
 
@@ -299,38 +299,38 @@ static unsigned int de_get_transparency(struct lynx_accel *accel)
 /**
  * sm750_hw_imageblit
  * @accel: Acceleration device data
- * @pSrcbuf: pointer to start of source buffer in system memory
- * @srcDelta: Pitch value (in bytes) of the source buffer, +ive means top down
+ * @src_buf: pointer to start of source buffer in system memory
+ * @src_delta: Pitch value (in bytes) of the source buffer, +ive means top down
  *	      and -ive mean button up
- * @startBit: Mono data can start at any bit in a byte, this value should be
+ * @start_bit: Mono data can start at any bit in a byte, this value should be
  *	      0 to 7
- * @dBase: Address of destination: offset in frame buffer
- * @dPitch: Pitch value of destination surface in BYTE
- * @bytePerPixel: Color depth of destination surface
+ * @dest_base: Address of destination: offset in frame buffer
+ * @dest_pitch: Pitch value of destination surface in BYTE
+ * @byte_per_pixel: Color depth of destination surface
  * @dx: Starting x coordinate of destination surface
  * @dy: Starting y coordinate of destination surface
  * @width: width of rectangle in pixel value
  * @height: height of rectangle in pixel value
- * @fColor: Foreground color (corresponding to a 1 in the monochrome data
- * @bColor: Background color (corresponding to a 0 in the monochrome data
+ * @fg_color: Foreground color (corresponding to a 1 in the monochrome data
+ * @bg_color: Background color (corresponding to a 0 in the monochrome data
  * @rop2: ROP value
  */
-int sm750_hw_imageblit(struct lynx_accel *accel, const char *pSrcbuf,
-		       u32 srcDelta, u32 startBit, u32 dBase, u32 dPitch,
-		       u32 bytePerPixel, u32 dx, u32 dy, u32 width,
-		       u32 height, u32 fColor, u32 bColor, u32 rop2)
+int sm750_hw_imageblit(struct lynx_accel *accel, const char *src_buf,
+		       u32 src_delta, u32 start_bit, u32 dest_base, u32 dest_pitch,
+		       u32 byte_per_pixel, u32 dx, u32 dy, u32 width,
+		       u32 height, u32 fg_color, u32 bg_color, u32 rop2)
 {
-	unsigned int ulBytesPerScan;
-	unsigned int ul4BytesPerScan;
-	unsigned int ulBytesRemain;
+	unsigned int bytes_per_scan;
+	unsigned int words_per_scan;
+	unsigned int bytes_remain;
 	unsigned int de_ctrl = 0;
-	unsigned char ajRemain[4];
+	unsigned char remain[4];
 	int i, j;
 
-	startBit &= 7; /* Just make sure the start bit is within legal range */
-	ulBytesPerScan = (width + startBit + 7) / 8;
-	ul4BytesPerScan = ulBytesPerScan & ~3;
-	ulBytesRemain = ulBytesPerScan & 3;
+	start_bit &= 7; /* Just make sure the start bit is within legal range */
+	bytes_per_scan = (width + start_bit + 7) / 8;
+	words_per_scan = bytes_per_scan & ~3;
+	bytes_remain = bytes_per_scan & 3;
 
 	if (accel->de_wait() != 0)
 		return -1;
@@ -345,35 +345,35 @@ int sm750_hw_imageblit(struct lynx_accel *accel, const char *pSrcbuf,
 	 * It is an address offset (128 bit aligned)
 	 * from the beginning of frame buffer.
 	 */
-	write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dBase);
+	write_dpr(accel, DE_WINDOW_DESTINATION_BASE, dest_base);
 
 	/*
 	 * Program pitch (distance between the 1st points of two adjacent
 	 * lines). Note that input pitch is BYTE value, but the 2D Pitch
 	 * register uses pixel values. Need Byte to pixel conversion.
 	 */
 	write_dpr(accel, DE_PITCH,
-		  ((dPitch / bytePerPixel << DE_PITCH_DESTINATION_SHIFT) &
+		  ((dest_pitch / byte_per_pixel << DE_PITCH_DESTINATION_SHIFT) &
 		   DE_PITCH_DESTINATION_MASK) |
-		  (dPitch / bytePerPixel & DE_PITCH_SOURCE_MASK)); /* dpr10 */
+		  (dest_pitch / byte_per_pixel & DE_PITCH_SOURCE_MASK)); /* dpr10 */
 
 	/*
 	 * Screen Window width in Pixels.
 	 * 2D engine uses this value to calculate the linear address
 	 * in frame buffer for a given point.
 	 */
 	write_dpr(accel, DE_WINDOW_WIDTH,
-		  ((dPitch / bytePerPixel << DE_WINDOW_WIDTH_DST_SHIFT) &
+		  ((dest_pitch / byte_per_pixel << DE_WINDOW_WIDTH_DST_SHIFT) &
 		   DE_WINDOW_WIDTH_DST_MASK) |
-		  (dPitch / bytePerPixel & DE_WINDOW_WIDTH_SRC_MASK));
+		  (dest_pitch / byte_per_pixel & DE_WINDOW_WIDTH_SRC_MASK));
 
 	 /*
 	  * Note: For 2D Source in Host Write, only X_K1_MONO field is needed,
 	  * and Y_K2 field is not used.
-	  * For mono bitmap, use startBit for X_K1.
+	  * For mono bitmap, use start_bit for X_K1.
 	  */
 	write_dpr(accel, DE_SOURCE,
-		  (startBit << DE_SOURCE_X_K1_SHIFT) &
+		  (start_bit << DE_SOURCE_X_K1_SHIFT) &
 		  DE_SOURCE_X_K1_MONO_MASK); /* dpr00 */
 
 	write_dpr(accel, DE_DESTINATION,
@@ -384,8 +384,8 @@ int sm750_hw_imageblit(struct lynx_accel *accel, const char *pSrcbuf,
 		  ((width << DE_DIMENSION_X_SHIFT) & DE_DIMENSION_X_MASK) |
 		  (height & DE_DIMENSION_Y_ET_MASK)); /* dpr08 */
 
-	write_dpr(accel, DE_FOREGROUND, fColor);
-	write_dpr(accel, DE_BACKGROUND, bColor);
+	write_dpr(accel, DE_FOREGROUND, fg_color);
+	write_dpr(accel, DE_BACKGROUND, bg_color);
 
 	de_ctrl = (rop2 & DE_CONTROL_ROP_MASK) |
 		DE_CONTROL_ROP_SELECT | DE_CONTROL_COMMAND_HOST_WRITE |
@@ -396,16 +396,16 @@ int sm750_hw_imageblit(struct lynx_accel *accel, const char *pSrcbuf,
 	/* Write MONO data (line by line) to 2D Engine data port */
 	for (i = 0; i < height; i++) {
 		/* For each line, send the data in chunks of 4 bytes */
-		for (j = 0; j < (ul4BytesPerScan / 4); j++)
-			write_dpPort(accel, *(unsigned int *)(pSrcbuf + (j * 4)));
+		for (j = 0; j < (words_per_scan / 4); j++)
+			write_dp_port(accel, *(unsigned int *)(src_buf + (j * 4)));
 
-		if (ulBytesRemain) {
-			memcpy(ajRemain, pSrcbuf + ul4BytesPerScan,
-			       ulBytesRemain);
-			write_dpPort(accel, *(unsigned int *)ajRemain);
+		if (bytes_remain) {
+			memcpy(remain, src_buf + words_per_scan,
+			       bytes_remain);
+			write_dp_port(accel, *(unsigned int *)remain);
 		}
 
-		pSrcbuf += srcDelta;
+		src_buf += src_delta;
 	}
 
 	return 0;