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staging: sm750fb: add common function to set color offsets and visual mode

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This patch will unify code for updating color offsets and frame buffer
visual mode.

Signed-off-by: Matej Dujava <mdujava@kocurkovo.cz>
Link: https://lore.kernel.org/r/1588277366-19354-3-git-send-email-mdujava@kocurkovo.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matej Dujava 2020-04-30 22:09:25 +02:00 committed by Greg Kroah-Hartman
parent fa90133377
commit b610e1193a
1 changed files with 67 additions and 82 deletions
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149
drivers/staging/sm750fb/sm750.c
View File

@ -297,6 +297,62 @@ static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
return hw_sm750_pan_display(crtc, var, info);
}
static inline void lynxfb_set_visual_mode(struct fb_info *info)
{
switch (info->var.bits_per_pixel) {
case 8:
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
break;
case 16:
case 24:
case 32:
info->fix.visual = FB_VISUAL_TRUECOLOR;
break;
default:
break;
}
}
static inline int lynxfb_set_color_offsets(struct fb_info *info)
{
lynxfb_set_visual_mode(info);
switch (info->var.bits_per_pixel) {
case 8:
info->var.red.offset = 0;
info->var.red.length = 8;
info->var.green.offset = 0;
info->var.green.length = 8;
info->var.blue.offset = 0;
info->var.blue.length = 8;
info->var.transp.length = 0;
info->var.transp.offset = 0;
break;
case 16:
info->var.red.offset = 11;
info->var.red.length = 5;
info->var.green.offset = 5;
info->var.green.length = 6;
info->var.blue.offset = 0;
info->var.blue.length = 5;
info->var.transp.length = 0;
info->var.transp.offset = 0;
break;
case 24:
case 32:
info->var.red.offset = 16;
info->var.red.length = 8;
info->var.green.offset = 8;
info->var.green.length = 8;
info->var.blue.offset = 0;
info->var.blue.length = 8;
break;
default:
return -EINVAL;
}
return 0;
}
static int lynxfb_ops_set_par(struct fb_info *info)
{
struct lynxfb_par *par;
@ -328,43 +384,8 @@ static int lynxfb_ops_set_par(struct fb_info *info)
* and these data should be set before setcolreg routine
*/
switch (var->bits_per_pixel) {
case 8:
fix->visual = FB_VISUAL_PSEUDOCOLOR;
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.length = 0;
var->transp.offset = 0;
break;
case 16:
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
var->transp.length = 0;
var->transp.offset = 0;
fix->visual = FB_VISUAL_TRUECOLOR;
break;
case 24:
case 32:
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
fix->visual = FB_VISUAL_TRUECOLOR;
break;
default:
ret = -EINVAL;
break;
}
ret = lynxfb_set_color_offsets(info);
var->height = var->width = -1;
var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
@ -511,10 +532,12 @@ lynxfb_resume_err:
static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
int ret;
struct lynxfb_par *par;
struct lynxfb_crtc *crtc;
resource_size_t request;
ret = 0;
par = info->par;
crtc = &par->crtc;
@ -523,43 +546,13 @@ static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
var->yres,
var->bits_per_pixel);
switch (var->bits_per_pixel) {
case 8:
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.length = 0;
var->transp.offset = 0;
break;
case 16:
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
var->transp.length = 0;
var->transp.offset = 0;
info->fix.visual = FB_VISUAL_TRUECOLOR;
break;
case 24:
case 32:
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
info->fix.visual = FB_VISUAL_TRUECOLOR;
break;
default:
ret = lynxfb_set_color_offsets(info);
if (ret) {
pr_err("bpp %d not supported\n", var->bits_per_pixel);
return -EINVAL;
return ret;
}
var->height = var->width = -1;
var->accel_flags = 0;/* FB_ACCELF_TEXT; */
@ -895,16 +888,8 @@ static int lynxfb_set_fbinfo(struct fb_info *info, int index)
pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
fix->mmio_len = sm750_dev->vidreg_size;
pr_info("fix->mmio_len = %x\n", fix->mmio_len);
switch (var->bits_per_pixel) {
case 8:
fix->visual = FB_VISUAL_PSEUDOCOLOR;
break;
case 16:
case 24:
case 32:
fix->visual = FB_VISUAL_TRUECOLOR;
break;
}
lynxfb_set_visual_mode(info);
/* set var */
var->activate = FB_ACTIVATE_NOW;