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Date: Sun, 18 Mar 2018 08:51:15 -0700
From: Joe Perches <joe@...ches.com>
To: Pratik Jain <pratik.jain0509@...il.com>, arnaud.patard@...-net.org
Cc: trivial@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: xgifb: XGI_main_26.c: Fixed over 80 column
characters
On Sun, 2018-03-18 at 16:36 +0530, Pratik Jain wrote:
> Fixed coding style issues detected by checkpatch.pl
Hi. Rather than just following what checkpatch says,
try to look for opportunities to improve the code a bit.
Instead of wrapping, try unwrapping by unindenting blocks.
> diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
> []
> @@ -770,7 +770,9 @@ static void XGIfb_post_setmode(struct xgifb_video_info *xgifb_info)
> xgifb_reg_and(vb->Part2Port, 0x3a, 0x1f);
>
> if (xgifb_info->TV_plug == TVPLUG_SVIDEO) {
> - xgifb_reg_and(vb->Part2Port, 0x30, 0xdf);
> + xgifb_reg_and(vb->Part2Port,
> + 0x30,
> + 0xdf);
>
> } else if (xgifb_info->TV_plug
> == TVPLUG_COMPOSITE) {
For instance, these tests could return early and
so unindent the blocks and could be:
---
drivers/staging/xgifb/XGI_main_26.c | 225 ++++++++++++++----------------------
1 file changed, 86 insertions(+), 139 deletions(-)
diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
index 10107de0119a..73e389b8156f 100644
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -697,6 +697,7 @@ static void XGIfb_post_setmode(struct xgifb_video_info *xgifb_info)
struct vb_device_info *vb = &xgifb_info->dev_info;
u8 reg;
unsigned char doit = 1;
+ int filter_tb;
if (xgifb_info->video_bpp == 8) {
/*
@@ -735,162 +736,108 @@ static void XGIfb_post_setmode(struct xgifb_video_info *xgifb_info)
xgifb_reg_and(vb->P3c4, IND_SIS_RAMDAC_CONTROL, ~0x04);
- if (xgifb_info->display2 == XGIFB_DISP_TV &&
- xgifb_info->hasVB == HASVB_301) {
- reg = xgifb_reg_get(vb->Part4Port, 0x01);
+ if (xgifb_info->display2 != XGIFB_DISP_TV ||
+ xgifb_info->hasVB != HASVB_301)
+ return;
- if (reg < 0xB0) { /* Set filter for XGI301 */
- int filter_tb;
+ reg = xgifb_reg_get(vb->Part4Port, 0x01);
+ if (reg >= 0xB0)
+ return;
+
+ /* Set filter for XGI301 */
+
+ switch (xgifb_info->video_width) {
+ case 320:
+ filter_tb = (xgifb_info->TV_type == TVMODE_NTSC) ? 4 : 12;
+ break;
+ case 640:
+ filter_tb = (xgifb_info->TV_type == TVMODE_NTSC) ? 5 : 13;
+ break;
+ case 720:
+ filter_tb = (xgifb_info->TV_type == TVMODE_NTSC) ? 6 : 14;
+ break;
+ case 800:
+ filter_tb = (xgifb_info->TV_type == TVMODE_NTSC) ? 7 : 15;
+ break;
+ default:
+ filter_tb = 0;
+ filter = -1;
+ break;
+ }
+ xgifb_reg_or(vb->Part1Port, SIS_CRT2_WENABLE_315, 0x01);
+
+ if (xgifb_info->TV_type == TVMODE_NTSC) {
+ xgifb_reg_and(vb->Part2Port, 0x3a, 0x1f);
+
+ if (xgifb_info->TV_plug == TVPLUG_SVIDEO) {
+ xgifb_reg_and(vb->Part2Port, 0x30, 0xdf);
+
+ } else if (xgifb_info->TV_plug == TVPLUG_COMPOSITE) {
+ xgifb_reg_or(vb->Part2Port, 0x30, 0x20);
switch (xgifb_info->video_width) {
- case 320:
- filter_tb = (xgifb_info->TV_type ==
- TVMODE_NTSC) ? 4 : 12;
- break;
case 640:
- filter_tb = (xgifb_info->TV_type ==
- TVMODE_NTSC) ? 5 : 13;
+ xgifb_reg_set(vb->Part2Port, 0x35, 0xEB);
+ xgifb_reg_set(vb->Part2Port, 0x36, 0x04);
+ xgifb_reg_set(vb->Part2Port, 0x37, 0x25);
+ xgifb_reg_set(vb->Part2Port, 0x38, 0x18);
break;
case 720:
- filter_tb = (xgifb_info->TV_type ==
- TVMODE_NTSC) ? 6 : 14;
+ xgifb_reg_set(vb->Part2Port, 0x35, 0xEE);
+ xgifb_reg_set(vb->Part2Port, 0x36, 0x0C);
+ xgifb_reg_set(vb->Part2Port, 0x37, 0x22);
+ xgifb_reg_set(vb->Part2Port, 0x38, 0x08);
break;
case 800:
- filter_tb = (xgifb_info->TV_type ==
- TVMODE_NTSC) ? 7 : 15;
- break;
- default:
- filter_tb = 0;
- filter = -1;
+ xgifb_reg_set(vb->Part2Port, 0x35, 0xEB);
+ xgifb_reg_set(vb->Part2Port, 0x36, 0x15);
+ xgifb_reg_set(vb->Part2Port, 0x37, 0x25);
+ xgifb_reg_set(vb->Part2Port, 0x38, 0xF6);
break;
}
- xgifb_reg_or(vb->Part1Port, SIS_CRT2_WENABLE_315, 0x01);
+ }
- if (xgifb_info->TV_type == TVMODE_NTSC) {
- xgifb_reg_and(vb->Part2Port, 0x3a, 0x1f);
-
- if (xgifb_info->TV_plug == TVPLUG_SVIDEO) {
- xgifb_reg_and(vb->Part2Port, 0x30, 0xdf);
-
- } else if (xgifb_info->TV_plug
- == TVPLUG_COMPOSITE) {
- xgifb_reg_or(vb->Part2Port, 0x30, 0x20);
-
- switch (xgifb_info->video_width) {
- case 640:
- xgifb_reg_set(vb->Part2Port,
- 0x35,
- 0xEB);
- xgifb_reg_set(vb->Part2Port,
- 0x36,
- 0x04);
- xgifb_reg_set(vb->Part2Port,
- 0x37,
- 0x25);
- xgifb_reg_set(vb->Part2Port,
- 0x38,
- 0x18);
- break;
- case 720:
- xgifb_reg_set(vb->Part2Port,
- 0x35,
- 0xEE);
- xgifb_reg_set(vb->Part2Port,
- 0x36,
- 0x0C);
- xgifb_reg_set(vb->Part2Port,
- 0x37,
- 0x22);
- xgifb_reg_set(vb->Part2Port,
- 0x38,
- 0x08);
- break;
- case 800:
- xgifb_reg_set(vb->Part2Port,
- 0x35,
- 0xEB);
- xgifb_reg_set(vb->Part2Port,
- 0x36,
- 0x15);
- xgifb_reg_set(vb->Part2Port,
- 0x37,
- 0x25);
- xgifb_reg_set(vb->Part2Port,
- 0x38,
- 0xF6);
- break;
- }
- }
+ } else if (xgifb_info->TV_type == TVMODE_PAL) {
+ xgifb_reg_and(vb->Part2Port, 0x3A, 0x1F);
- } else if (xgifb_info->TV_type == TVMODE_PAL) {
- xgifb_reg_and(vb->Part2Port, 0x3A, 0x1F);
-
- if (xgifb_info->TV_plug == TVPLUG_SVIDEO) {
- xgifb_reg_and(vb->Part2Port, 0x30, 0xDF);
-
- } else if (xgifb_info->TV_plug
- == TVPLUG_COMPOSITE) {
- xgifb_reg_or(vb->Part2Port, 0x30, 0x20);
-
- switch (xgifb_info->video_width) {
- case 640:
- xgifb_reg_set(vb->Part2Port,
- 0x35,
- 0xF1);
- xgifb_reg_set(vb->Part2Port,
- 0x36,
- 0xF7);
- xgifb_reg_set(vb->Part2Port,
- 0x37,
- 0x1F);
- xgifb_reg_set(vb->Part2Port,
- 0x38,
- 0x32);
- break;
- case 720:
- xgifb_reg_set(vb->Part2Port,
- 0x35,
- 0xF3);
- xgifb_reg_set(vb->Part2Port,
- 0x36,
- 0x00);
- xgifb_reg_set(vb->Part2Port,
- 0x37,
- 0x1D);
- xgifb_reg_set(vb->Part2Port,
- 0x38,
- 0x20);
- break;
- case 800:
- xgifb_reg_set(vb->Part2Port,
- 0x35,
- 0xFC);
- xgifb_reg_set(vb->Part2Port,
- 0x36,
- 0xFB);
- xgifb_reg_set(vb->Part2Port,
- 0x37,
- 0x14);
- xgifb_reg_set(vb->Part2Port,
- 0x38,
- 0x2A);
- break;
- }
- }
- }
+ if (xgifb_info->TV_plug == TVPLUG_SVIDEO) {
+ xgifb_reg_and(vb->Part2Port, 0x30, 0xDF);
- if ((filter >= 0) && (filter <= 7)) {
- const u8 *f = XGI_TV_filter[filter_tb].filter[filter];
+ } else if (xgifb_info->TV_plug == TVPLUG_COMPOSITE) {
+ xgifb_reg_or(vb->Part2Port, 0x30, 0x20);
- pr_debug("FilterTable[%d]-%d: %*ph\n",
- filter_tb, filter, 4, f);
- xgifb_reg_set(vb->Part2Port, 0x35, f[0]);
- xgifb_reg_set(vb->Part2Port, 0x36, f[1]);
- xgifb_reg_set(vb->Part2Port, 0x37, f[2]);
- xgifb_reg_set(vb->Part2Port, 0x38, f[3]);
+ switch (xgifb_info->video_width) {
+ case 640:
+ xgifb_reg_set(vb->Part2Port, 0x35, 0xF1);
+ xgifb_reg_set(vb->Part2Port, 0x36, 0xF7);
+ xgifb_reg_set(vb->Part2Port, 0x37, 0x1F);
+ xgifb_reg_set(vb->Part2Port, 0x38, 0x32);
+ break;
+ case 720:
+ xgifb_reg_set(vb->Part2Port, 0x35, 0xF3);
+ xgifb_reg_set(vb->Part2Port, 0x36, 0x00);
+ xgifb_reg_set(vb->Part2Port, 0x37, 0x1D);
+ xgifb_reg_set(vb->Part2Port, 0x38, 0x20);
+ break;
+ case 800:
+ xgifb_reg_set(vb->Part2Port, 0x35, 0xFC);
+ xgifb_reg_set(vb->Part2Port, 0x36, 0xFB);
+ xgifb_reg_set(vb->Part2Port, 0x37, 0x14);
+ xgifb_reg_set(vb->Part2Port, 0x38, 0x2A);
+ break;
}
}
}
+
+ if ((filter >= 0) && (filter <= 7)) {
+ const u8 *f = XGI_TV_filter[filter_tb].filter[filter];
+
+ pr_debug("FilterTable[%d]-%d: %*ph\n", filter_tb, filter, 4, f);
+ xgifb_reg_set(vb->Part2Port, 0x35, f[0]);
+ xgifb_reg_set(vb->Part2Port, 0x36, f[1]);
+ xgifb_reg_set(vb->Part2Port, 0x37, f[2]);
+ xgifb_reg_set(vb->Part2Port, 0x38, f[3]);
+ }
}
static int XGIfb_do_set_var(struct fb_var_screeninfo *var, int isactive,
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