linux-kernel - [PATCH v3] staging: sm750fb: Code readability is improved

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Date:   Sun, 19 Mar 2017 18:37:44 +0530
From:   Arushi Singhal <arushisinghal19971997@...il.com>
To:     sudipm.mukherjee@...il.com
Cc:     Teddy Wang <teddy.wang@...iconmotion.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-fbdev@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, outreachy-kernel@...glegroups.com
Subject: [PATCH v3] staging: sm750fb: Code readability is improved

New variables are added to make the code more readable.

Signed-off-by: Arushi Singhal <arushisinghal19971997@...il.com>
---
 changes in v3
 -try to make the code much more readable.
 
 drivers/staging/sm750fb/ddk750_mode.c | 61 ++++++++++++++++++++---------------
 1 file changed, 35 insertions(+), 26 deletions(-)

diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
index eea5aef2956f..5f18ce4d10de 100644
--- a/drivers/staging/sm750fb/ddk750_mode.c
+++ b/drivers/staging/sm750fb/ddk750_mode.c
@@ -81,33 +81,42 @@ static int programModeRegisters(mode_parameter_t *pModeParam, struct pll_value *
 	if (pll->clockType == SECONDARY_PLL) {
 		/* programe secondary pixel clock */
 		poke32(CRT_PLL_CTRL, sm750_format_pll_reg(pll));
-		poke32(CRT_HORIZONTAL_TOTAL,
-		       (((pModeParam->horizontal_total - 1) <<
-			 CRT_HORIZONTAL_TOTAL_TOTAL_SHIFT) &
-			CRT_HORIZONTAL_TOTAL_TOTAL_MASK) |
-		       ((pModeParam->horizontal_display_end - 1) &
-			CRT_HORIZONTAL_TOTAL_DISPLAY_END_MASK));
-
-		poke32(CRT_HORIZONTAL_SYNC,
-		       ((pModeParam->horizontal_sync_width <<
-			 CRT_HORIZONTAL_SYNC_WIDTH_SHIFT) &
-			CRT_HORIZONTAL_SYNC_WIDTH_MASK) |
-		       ((pModeParam->horizontal_sync_start - 1) &
-			CRT_HORIZONTAL_SYNC_START_MASK));
 
-		poke32(CRT_VERTICAL_TOTAL,
-		       (((pModeParam->vertical_total - 1) <<
-			 CRT_VERTICAL_TOTAL_TOTAL_SHIFT) &
-			CRT_VERTICAL_TOTAL_TOTAL_MASK) |
-		       ((pModeParam->vertical_display_end - 1) &
-			CRT_VERTICAL_TOTAL_DISPLAY_END_MASK));
-
-		poke32(CRT_VERTICAL_SYNC,
-		       ((pModeParam->vertical_sync_height <<
-			 CRT_VERTICAL_SYNC_HEIGHT_SHIFT) &
-			CRT_VERTICAL_SYNC_HEIGHT_MASK) |
-		       ((pModeParam->vertical_sync_start - 1) &
-			CRT_VERTICAL_SYNC_START_MASK));
+		unsigned int a = (pModeParam->horizontal_total - 1) <<
+				CRT_HORIZONTAL_TOTAL_TOTAL_SHIFT;
+		unsigned int b = a & CRT_HORIZONTAL_TOTAL_TOTAL_MASK;
+		unsigned int c = (pModeParam->horizontal_display_end - 1) &
+				CRT_HORIZONTAL_TOTAL_DISPLAY_END_MASK;
+		unsigned int temp = b | c;
+
+		poke32(CRT_HORIZONTAL_TOTAL, temp);
+
+		unsigned int a = (pModeParam->horizontal_sync_width <<
+				CRT_HORIZONTAL_SYNC_WIDTH_SHIFT);
+		unsigned int b = a & CRT_HORIZONTAL_SYNC_WIDTH_MASK;
+		unsigned int c = (pModeParam->horizontal_sync_start - 1) &
+				CRT_HORIZONTAL_SYNC_START_MASK;
+		unsigned int temp = b | c;
+
+		poke32(CRT_HORIZONTAL_SYNC, temp);
+
+		unsigned int a = (pModeParam->vertical_total - 1) <<
+				CRT_VERTICAL_TOTAL_TOTAL_SHIFT;
+		unsigned int b = a & CRT_VERTICAL_TOTAL_TOTAL_MASK;
+		unsigned int c = (pModeParam->vertical_display_end - 1) &
+				CRT_VERTICAL_TOTAL_DISPLAY_END_MASK;
+		unsigned int temp = b | c;
+
+		poke32(CRT_VERTICAL_TOTAL, temp);
+
+		unsigned int a = pModeParam->vertical_sync_height <<
+				CRT_VERTICAL_SYNC_HEIGHT_SHIFT;
+		unsigned int b = a & CRT_VERTICAL_SYNC_HEIGHT_MASK;
+		unsigned int c = (pModeParam->vertical_sync_start - 1) &
+				CRT_VERTICAL_SYNC_START_MASK;
+		unsigned int temp = b | c;
+
+		poke32(CRT_VERTICAL_SYNC, temp);
 
 		tmp = DISPLAY_CTRL_TIMING | DISPLAY_CTRL_PLANE;
 		if (pModeParam->vertical_sync_polarity)
-- 
2.11.0