static void __blank(int blank, struct fb_info *fbi)
{
struct mx3fb_info *mx3_fbi = fbi->par;
struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
int was_blank = mx3_fbi->blank;
mx3_fbi->blank = blank;
/* Attention!
* Do not call sdc_disable_channel() for a channel that is disabled
* already! This will result in a kernel NULL pointer dereference
* (mx3_fbi->txd is NULL). Hide the fact, that all blank modes are
* handled equally by this driver.
*/
if (blank > FB_BLANK_UNBLANK && was_blank > FB_BLANK_UNBLANK)
return;
switch (blank) {
case FB_BLANK_POWERDOWN:
case FB_BLANK_VSYNC_SUSPEND:
case FB_BLANK_HSYNC_SUSPEND:
case FB_BLANK_NORMAL:
sdc_set_brightness(mx3fb, 0);
memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
/* Give LCD time to update - enough for 50 and 60 Hz */
msleep(25);
sdc_disable_channel(mx3_fbi);
break;
case FB_BLANK_UNBLANK:
sdc_enable_channel(mx3_fbi);
sdc_set_brightness(mx3fb, mx3fb->backlight_level);
break;
}
}
/**
* mx3fb_blank() - blank the display.
*/
static int mx3fb_blank(int blank, struct fb_info *fbi)
{
struct mx3fb_info *mx3_fbi = fbi->par;
struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
dev_dbg(fbi->device, "%s, blank = %d, base %p, len %u\n", __func__,
blank, fbi->screen_base, fbi->fix.smem_len);
if (mx3_fbi->blank == blank)
return 0;
mutex_lock(&mx3_fbi->mutex);
mx3_fbi->blank = blank;
switch (blank) {
case FB_BLANK_POWERDOWN:
case FB_BLANK_VSYNC_SUSPEND:
case FB_BLANK_HSYNC_SUSPEND:
case FB_BLANK_NORMAL:
sdc_set_brightness(mx3fb, 0);
memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
/* Give LCD time to update - enough for 50 and 60 Hz */
msleep(25);
sdc_disable_channel(mx3_fbi);
break;
case FB_BLANK_UNBLANK:
sdc_enable_channel(mx3_fbi);
sdc_set_brightness(mx3fb, mx3fb->backlight_level);
break;
}
mutex_unlock(&mx3_fbi->mutex);
return 0;
}
static void __blank(int blank, struct fb_info *fbi)
{
struct mx3fb_info *mx3_fbi = fbi->par;
struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
mx3_fbi->blank = blank;
switch (blank) {
case FB_BLANK_POWERDOWN:
case FB_BLANK_VSYNC_SUSPEND:
case FB_BLANK_HSYNC_SUSPEND:
case FB_BLANK_NORMAL:
sdc_set_brightness(mx3fb, 0);
memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
/* Give LCD time to update - enough for 50 and 60 Hz */
msleep(25);
sdc_disable_channel(mx3_fbi);
break;
case FB_BLANK_UNBLANK:
sdc_enable_channel(mx3_fbi);
sdc_set_brightness(mx3fb, mx3fb->backlight_level);
break;
}
}
