From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arushi Singhal Date: Sun, 19 Mar 2017 13:19:44 +0000 Subject: [PATCH v3] staging: sm750fb: Code readability is improved Message-Id: <20170319130744.GA24605@arushi-HP-Pavilion-Notebook> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: sudipm.mukherjee@gmail.com Cc: Teddy Wang , Greg Kroah-Hartman , linux-fbdev@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, outreachy-kernel@googlegroups.com New variables are added to make the code more readable. Signed-off-by: Arushi Singhal --- 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