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Date: Sun, 19 Mar 2017 21:19:20 +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 v4] 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 v4
-try to make the code much more readable.
- defined the variable at the top of a block.
---
drivers/staging/sm750fb/ddk750_mode.c | 57 +++++++++++++++++++----------------
1 file changed, 31 insertions(+), 26 deletions(-)
diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
index eea5aef2956f..6517e770e0a7 100644
--- a/drivers/staging/sm750fb/ddk750_mode.c
+++ b/drivers/staging/sm750fb/ddk750_mode.c
@@ -76,38 +76,43 @@ static int programModeRegisters(mode_parameter_t *pModeParam, struct pll_value *
{
int ret = 0;
int cnt = 0;
- unsigned int tmp, reg;
+ unsigned int tmp, reg, temp;
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));
+ temp = (pModeParam->horizontal_total - 1) <<
+ CRT_HORIZONTAL_TOTAL_TOTAL_SHIFT;
+ temp = temp & CRT_HORIZONTAL_TOTAL_TOTAL_MASK;
+ temp = temp | ((pModeParam->horizontal_display_end - 1) &
+ CRT_HORIZONTAL_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));
+ poke32(CRT_HORIZONTAL_TOTAL, temp);
+
+ temp = (pModeParam->horizontal_sync_width <<
+ CRT_HORIZONTAL_SYNC_WIDTH_SHIFT);
+ temp = temp & CRT_HORIZONTAL_SYNC_WIDTH_MASK;
+ temp = temp | ((pModeParam->horizontal_sync_start - 1) &
+ CRT_HORIZONTAL_SYNC_START_MASK);
+
+ poke32(CRT_HORIZONTAL_SYNC, temp);
+
+ temp = (pModeParam->vertical_total - 1) <<
+ CRT_VERTICAL_TOTAL_TOTAL_SHIFT;
+ temp = temp & CRT_VERTICAL_TOTAL_TOTAL_MASK;
+ temp = temp | ((pModeParam->vertical_display_end - 1) &
+ CRT_VERTICAL_TOTAL_DISPLAY_END_MASK);
+
+ poke32(CRT_VERTICAL_TOTAL, temp);
+
+ temp = pModeParam->vertical_sync_height <<
+ CRT_VERTICAL_SYNC_HEIGHT_SHIFT;
+ temp = temp & CRT_VERTICAL_SYNC_HEIGHT_MASK;
+ temp = temp | ((pModeParam->vertical_sync_start - 1) &
+ CRT_VERTICAL_SYNC_START_MASK);
+
+ poke32(CRT_VERTICAL_SYNC, temp);
tmp = DISPLAY_CTRL_TIMING | DISPLAY_CTRL_PLANE;
if (pModeParam->vertical_sync_polarity)
--
2.11.0
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