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path: root/drivers/video/s3c2410fb.c
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Diffstat (limited to 'drivers/video/s3c2410fb.c')
-rw-r--r--drivers/video/s3c2410fb.c234
1 files changed, 136 insertions, 98 deletions
diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c
index e52ec2283161..04e9d7a482fa 100644
--- a/drivers/video/s3c2410fb.c
+++ b/drivers/video/s3c2410fb.c
@@ -197,6 +197,14 @@ static int s3c2410fb_check_var(struct fb_var_screeninfo *var,
return -EINVAL;
}
+ /* it is always the size as the display */
+ var->xres_virtual = display->xres;
+ var->yres_virtual = display->yres;
+
+ /* copy lcd settings */
+ var->left_margin = display->left_margin;
+ var->right_margin = display->right_margin;
+
var->transp.offset = 0;
var->transp.length = 0;
/* set r/g/b positions */
@@ -270,124 +278,151 @@ static int s3c2410fb_check_var(struct fb_var_screeninfo *var,
return 0;
}
-/* s3c2410fb_activate_var
+/* s3c2410fb_calculate_stn_lcd_regs
*
- * activate (set) the controller from the given framebuffer
- * information
+ * calculate register values from var settings
*/
-static void s3c2410fb_activate_var(struct fb_info *info,
- struct fb_var_screeninfo *var)
+static void s3c2410fb_calculate_stn_lcd_regs(const struct fb_info *info,
+ struct s3c2410fb_hw *regs)
{
- struct s3c2410fb_info *fbi = info->par;
- struct s3c2410fb_mach_info *mach_info = fbi->mach_info;
- struct s3c2410fb_display *display = mach_info->displays +
- fbi->current_display;
- int hs;
-
- fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_MODEMASK;
- fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_TFT;
+ const struct s3c2410fb_info *fbi = info->par;
+ const struct fb_var_screeninfo *var = &info->var;
+ int type = regs->lcdcon1 & ~S3C2410_LCDCON1_TFT;
+ int hs = var->xres >> 2;
+ unsigned wdly = (var->left_margin >> 4) - 1;
dprintk("%s: var->xres = %d\n", __FUNCTION__, var->xres);
dprintk("%s: var->yres = %d\n", __FUNCTION__, var->yres);
dprintk("%s: var->bpp = %d\n", __FUNCTION__, var->bits_per_pixel);
- fbi->regs.lcdcon1 |= display->type;
-
- if (display->type == S3C2410_LCDCON1_TFT)
- switch (var->bits_per_pixel) {
- case 1:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT1BPP;
- break;
- case 2:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT2BPP;
- break;
- case 4:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT4BPP;
- break;
- case 8:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT8BPP;
- break;
- case 16:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT16BPP;
- break;
+ if (type != S3C2410_LCDCON1_STN4)
+ hs >>= 1;
- default:
- /* invalid pixel depth */
- dev_err(fbi->dev, "invalid bpp %d\n",
- var->bits_per_pixel);
- }
- else
- switch (var->bits_per_pixel) {
- case 1:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN1BPP;
- break;
- case 2:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN2GREY;
- break;
- case 4:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN4GREY;
- break;
- case 8:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN8BPP;
- break;
- case 12:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN12BPP;
- break;
+ regs->lcdcon1 &= ~S3C2410_LCDCON1_MODEMASK;
- default:
- /* invalid pixel depth */
- dev_err(fbi->dev, "invalid bpp %d\n",
- var->bits_per_pixel);
- }
+ switch (var->bits_per_pixel) {
+ case 1:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN1BPP;
+ break;
+ case 2:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN2GREY;
+ break;
+ case 4:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN4GREY;
+ break;
+ case 8:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN8BPP;
+ hs *= 3;
+ break;
+ case 12:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN12BPP;
+ hs *= 3;
+ break;
- /* check to see if we need to update sync/borders */
+ default:
+ /* invalid pixel depth */
+ dev_err(fbi->dev, "invalid bpp %d\n",
+ var->bits_per_pixel);
+ }
+ /* update X/Y info */
+ dprintk("setting vert: up=%d, low=%d, sync=%d\n",
+ var->upper_margin, var->lower_margin, var->vsync_len);
- if (!mach_info->fixed_syncs) {
- dprintk("setting vert: up=%d, low=%d, sync=%d\n",
- var->upper_margin, var->lower_margin, var->vsync_len);
+ dprintk("setting horz: lft=%d, rt=%d, sync=%d\n",
+ var->left_margin, var->right_margin, var->hsync_len);
- dprintk("setting horz: lft=%d, rt=%d, sync=%d\n",
- var->left_margin, var->right_margin, var->hsync_len);
+ regs->lcdcon2 &= ~S3C2410_LCDCON2_LINEVAL(0x3ff);
+ regs->lcdcon2 |= S3C2410_LCDCON2_LINEVAL(var->yres - 1);
- fbi->regs.lcdcon2 =
- S3C2410_LCDCON2_VBPD(var->upper_margin - 1) |
- S3C2410_LCDCON2_VFPD(var->lower_margin - 1) |
- S3C2410_LCDCON2_VSPW(var->vsync_len - 1);
+ if (wdly > 3)
+ wdly = 3;
- fbi->regs.lcdcon3 =
- S3C2410_LCDCON3_HBPD(var->right_margin - 1) |
- S3C2410_LCDCON3_HFPD(var->left_margin - 1);
+ regs->lcdcon3 = S3C2410_LCDCON3_WDLY(wdly) |
+ S3C2410_LCDCON3_LINEBLANK(var->right_margin / 8) |
+ S3C2410_LCDCON3_HOZVAL(hs - 1);
+}
- fbi->regs.lcdcon4 &= ~S3C2410_LCDCON4_HSPW(0xff);
- fbi->regs.lcdcon4 |= S3C2410_LCDCON4_HSPW(var->hsync_len - 1);
- }
+/* s3c2410fb_calculate_tft_lcd_regs
+ *
+ * calculate register values from var settings
+ */
+static void s3c2410fb_calculate_tft_lcd_regs(const struct fb_info *info,
+ struct s3c2410fb_hw *regs)
+{
+ const struct s3c2410fb_info *fbi = info->par;
+ const struct fb_var_screeninfo *var = &info->var;
- /* update X/Y info */
+ dprintk("%s: var->xres = %d\n", __FUNCTION__, var->xres);
+ dprintk("%s: var->yres = %d\n", __FUNCTION__, var->yres);
+ dprintk("%s: var->bpp = %d\n", __FUNCTION__, var->bits_per_pixel);
- fbi->regs.lcdcon2 &= ~S3C2410_LCDCON2_LINEVAL(0x3ff);
- fbi->regs.lcdcon2 |= S3C2410_LCDCON2_LINEVAL(var->yres - 1);
+ regs->lcdcon1 &= ~S3C2410_LCDCON1_MODEMASK;
- switch (display->type) {
- case S3C2410_LCDCON1_DSCAN4:
- case S3C2410_LCDCON1_STN8:
- hs = var->xres / 8;
+ switch (var->bits_per_pixel) {
+ case 1:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT1BPP;
+ break;
+ case 2:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT2BPP;
break;
- case S3C2410_LCDCON1_STN4:
- hs = var->xres / 4;
+ case 4:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT4BPP;
break;
- default:
- case S3C2410_LCDCON1_TFT:
- hs = var->xres;
+ case 8:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT8BPP;
+ break;
+ case 16:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT16BPP;
break;
+
+ default:
+ /* invalid pixel depth */
+ dev_err(fbi->dev, "invalid bpp %d\n",
+ var->bits_per_pixel);
}
+ /* update X/Y info */
+ dprintk("setting vert: up=%d, low=%d, sync=%d\n",
+ var->upper_margin, var->lower_margin, var->vsync_len);
- /* Special cases : STN color displays */
- if (((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN8BPP) ||
- ((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN12BPP))
- hs = hs * 3;
+ dprintk("setting horz: lft=%d, rt=%d, sync=%d\n",
+ var->left_margin, var->right_margin, var->hsync_len);
- fbi->regs.lcdcon3 &= ~S3C2410_LCDCON3_HOZVAL(0x7ff);
- fbi->regs.lcdcon3 |= S3C2410_LCDCON3_HOZVAL(hs - 1);
+ regs->lcdcon2 &= ~S3C2410_LCDCON2_LINEVAL(0x3ff);
+ regs->lcdcon2 |= S3C2410_LCDCON2_LINEVAL(var->yres - 1);
+
+ regs->lcdcon3 = S3C2410_LCDCON3_HBPD(var->right_margin - 1) |
+ S3C2410_LCDCON3_HFPD(var->left_margin - 1) |
+ S3C2410_LCDCON3_HOZVAL(var->xres - 1);
+}
+
+/* s3c2410fb_activate_var
+ *
+ * activate (set) the controller from the given framebuffer
+ * information
+ */
+static void s3c2410fb_activate_var(struct fb_info *info)
+{
+ struct s3c2410fb_info *fbi = info->par;
+ struct fb_var_screeninfo *var = &info->var;
+ struct s3c2410fb_mach_info *mach_info = fbi->mach_info;
+ struct s3c2410fb_display *display = mach_info->displays +
+ fbi->current_display;
+
+ /* set display type */
+ fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_TFT;
+ fbi->regs.lcdcon1 |= display->type;
+
+ /* check to see if we need to update sync/borders */
+
+ if (!mach_info->fixed_syncs) {
+ fbi->regs.lcdcon2 =
+ S3C2410_LCDCON2_VBPD(var->upper_margin - 1) |
+ S3C2410_LCDCON2_VFPD(var->lower_margin - 1) |
+ S3C2410_LCDCON2_VSPW(var->vsync_len - 1);
+
+ fbi->regs.lcdcon4 &= ~S3C2410_LCDCON4_HSPW(0xff);
+ fbi->regs.lcdcon4 |= S3C2410_LCDCON4_HSPW(var->hsync_len - 1);
+ }
if (var->pixclock > 0) {
int clkdiv = s3c2410fb_calc_pixclk(fbi, var->pixclock);
@@ -406,6 +441,11 @@ static void s3c2410fb_activate_var(struct fb_info *info,
fbi->regs.lcdcon1 |= S3C2410_LCDCON1_CLKVAL(clkdiv);
}
+ if (display->type == S3C2410_LCDCON1_TFT)
+ s3c2410fb_calculate_tft_lcd_regs(info, &fbi->regs);
+ else
+ s3c2410fb_calculate_stn_lcd_regs(info, &fbi->regs);
+
/* write new registers */
dprintk("new register set:\n");
@@ -452,7 +492,7 @@ static int s3c2410fb_set_par(struct fb_info *info)
/* activate this new configuration */
- s3c2410fb_activate_var(info, var);
+ s3c2410fb_activate_var(info);
return 0;
}
@@ -848,6 +888,8 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
fbinfo->var.yres = display->yres;
fbinfo->var.yres_virtual = display->yres;
fbinfo->var.bits_per_pixel = display->bpp;
+ fbinfo->var.left_margin = display->left_margin;
+ fbinfo->var.right_margin = display->right_margin;
fbinfo->var.upper_margin =
S3C2410_LCDCON2_GET_VBPD(mregs->lcdcon2) + 1;
@@ -856,10 +898,6 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
fbinfo->var.vsync_len =
S3C2410_LCDCON2_GET_VSPW(mregs->lcdcon2) + 1;
- fbinfo->var.left_margin =
- S3C2410_LCDCON3_GET_HFPD(mregs->lcdcon3) + 1;
- fbinfo->var.right_margin =
- S3C2410_LCDCON3_GET_HBPD(mregs->lcdcon3) + 1;
fbinfo->var.hsync_len =
S3C2410_LCDCON4_GET_HSPW(mregs->lcdcon4) + 1;
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-01 10:27:54 +0000