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Message-Id: <1588277366-19354-3-git-send-email-mdujava@kocurkovo.cz>
Date: Thu, 30 Apr 2020 22:09:25 +0200
From: Matej Dujava <mdujava@...urkovo.cz>
To: Sudip Mukherjee <sudipm.mukherjee@...il.com>,
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
Cc: Matej Dujava <mdujava@...urkovo.cz>
Subject: [PATCH 2/3] staging: sm750fb: add common function to set color offsets and visual mode
This patch will unify code for updating color offsets and frame buffer
visual mode.
Signed-off-by: Matej Dujava <mdujava@...urkovo.cz>
---
drivers/staging/sm750fb/sm750.c | 149 ++++++++++++++------------------
1 file changed, 67 insertions(+), 82 deletions(-)
diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index 39e610cc3c06..c3ce7e653c7f 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -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 @@ static int lynxfb_resume(struct pci_dev *pdev)
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;
--
2.26.2
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