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From:   Gabriela Bittencourt <gabrielabittencourt00@gmail.com>
To:     outreachy-kernel@googlegroups.com, sudipm.mukherjee@gmail.com,
        teddy.wang@siliconmotion.com, gregkh@linuxfoundation.org,
        linux-fbdev@vger.kernel.org, devel@driverdev.osuosl.org,
        linux-kernel@vger.kernel.org, lkcamp@lists.libreplanetbr.org
Cc:     Gabriela Bittencourt <gabrielabittencourt00@gmail.com>
Subject: [PATCH v2] staging: sm750fb: format description of parameters the to kernel doc format
Date:   Wed, 23 Oct 2019 10:12:52 -0300
Message-Id: <20191023131253.20819-1-gabrielabittencourt00@gmail.com>
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Cluster comments that describes parameters of functions and create one
single comment before the function in kernel doc format.

Signed-off-by: Gabriela Bittencourt <gabrielabittencourt00@gmail.com>

---

Changes v2:
 - Add name of function at the begining of comment
 - Separate each parameter in individuals lines

Here are the commands that I used to test my documentation and the
respective outputs:

$ kdoc_function sm750_acc.c sm750_hw_imageblit man
In NAME:
 there is the name of the function, but it's without a brief description
In ARGUMENTS:
 argument 'accel' is presented as '-- undescribed --'

$ kdoc_function sm750_acc.c sm750_hw_copyarea man
In NAME:
 there is the name of the function, but it's without a brief description
In ARGUMENTS:
 argument 'accel' is presented as '-- undescribed --'

$ kernel-doc -none sm750_accel.c
2 Warnings:
sm750_accel.c:155: warning: Function parameter or member 'accel'
			    not described in 'sm750_hw_copyarea'
sm750_accel.c:321: warning: Function parameter or member 'accel'
			    not described in 'sm750_hw_imageblit'

I appreciate Randy's explanation about how to test documentation.
Thank you very much.
---
 drivers/staging/sm750fb/sm750_accel.c | 72 ++++++++++++++++-----------
 1 file changed, 44 insertions(+), 28 deletions(-)

diff --git a/drivers/staging/sm750fb/sm750_accel.c b/drivers/staging/sm750fb/sm750_accel.c
index dbcbbd1055da..645813a87490 100644
--- a/drivers/staging/sm750fb/sm750_accel.c
+++ b/drivers/staging/sm750fb/sm750_accel.c
@@ -130,20 +130,28 @@ int sm750_hw_fillrect(struct lynx_accel *accel,
 	return 0;
 }
 
-int sm750_hw_copyarea(
-struct lynx_accel *accel,
-unsigned int sBase,  /* Address of source: offset in frame buffer */
-unsigned int sPitch, /* Pitch value of source surface in BYTE */
-unsigned int sx,
-unsigned int sy,     /* Starting coordinate of source surface */
-unsigned int dBase,  /* Address of destination: offset in frame buffer */
-unsigned int dPitch, /* Pitch value of destination surface in BYTE */
-unsigned int Bpp,    /* Color depth of destination surface */
-unsigned int dx,
-unsigned int dy,     /* Starting coordinate of destination surface */
-unsigned int width,
-unsigned int height, /* width and height of rectangle in pixel value */
-unsigned int rop2)   /* ROP value */
+/**
+ * sm750_hm_copyarea
+ * @sBase: Address of source: offset in frame buffer
+ * @sPitch: 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
+ * @Bpp: 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
+ * @rop2: ROP value
+ */
+int sm750_hw_copyarea(struct lynx_accel *accel,
+		      unsigned int sBase, unsigned int sPitch,
+		      unsigned int sx, unsigned int sy,
+		      unsigned int dBase, unsigned int dPitch,
+		      unsigned int Bpp, unsigned int dx, unsigned int dy,
+		      unsigned int width, unsigned int height,
+		      unsigned int rop2)
 {
 	unsigned int nDirection, de_ctrl;
 
@@ -288,20 +296,28 @@ static unsigned int deGetTransparency(struct lynx_accel *accel)
 	return de_ctrl;
 }
 
-int sm750_hw_imageblit(struct lynx_accel *accel,
-		 const char *pSrcbuf, /* pointer to start of source buffer in system memory */
-		 u32 srcDelta,          /* Pitch value (in bytes) of the source buffer, +ive means top down and -ive mean button up */
-		 u32 startBit, /* Mono data can start at any bit in a byte, this value should be 0 to 7 */
-		 u32 dBase,    /* Address of destination: offset in frame buffer */
-		 u32 dPitch,   /* Pitch value of destination surface in BYTE */
-		 u32 bytePerPixel,      /* Color depth of destination surface */
-		 u32 dx,
-		 u32 dy,       /* Starting coordinate of destination surface */
-		 u32 width,
-		 u32 height,   /* width and height of rectangle in pixel value */
-		 u32 fColor,   /* Foreground color (corresponding to a 1 in the monochrome data */
-		 u32 bColor,   /* Background color (corresponding to a 0 in the monochrome data */
-		 u32 rop2)     /* ROP value */
+/**
+ * sm750_hw_imageblit
+ * @pSrcbuf: pointer to start of source buffer in system memory
+ * @srcDelta: 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
+ *	      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
+ * @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
+ * @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)
 {
 	unsigned int ulBytesPerScan;
 	unsigned int ul4BytesPerScan;
-- 
2.20.1