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author | David S. Miller <davem@davemloft.net> | 2011-04-11 20:44:25 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2011-04-11 20:44:25 (GMT) |
commit | 1c01a80cfec6f806246f31ff2680cd3639b30e67 (patch) | |
tree | 0b554aad2ec1da71ecf6339d4ba51617bfe1dc3c /drivers/video/sh_mobile_lcdcfb.c | |
parent | c44d79950b2daa1025e62eede73e4e4a274d1ef3 (diff) | |
parent | 4a9f65f6304a00f6473e83b19c1e83caa1e42530 (diff) | |
download | linux-fsl-qoriq-1c01a80cfec6f806246f31ff2680cd3639b30e67.tar.xz |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/smsc911x.c
Diffstat (limited to 'drivers/video/sh_mobile_lcdcfb.c')
-rw-r--r-- | drivers/video/sh_mobile_lcdcfb.c | 52 |
1 files changed, 48 insertions, 4 deletions
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 757665b..9bcc61b 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -643,7 +643,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) continue; board_cfg = &ch->cfg.board_cfg; - if (try_module_get(board_cfg->owner) && board_cfg->display_on) { + if (board_cfg->display_on && try_module_get(board_cfg->owner)) { board_cfg->display_on(board_cfg->board_data, ch->info); module_put(board_cfg->owner); } @@ -688,7 +688,7 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) } board_cfg = &ch->cfg.board_cfg; - if (try_module_get(board_cfg->owner) && board_cfg->display_off) { + if (board_cfg->display_off && try_module_get(board_cfg->owner)) { board_cfg->display_off(board_cfg->board_data); module_put(board_cfg->owner); } @@ -1032,6 +1032,49 @@ static int sh_mobile_check_var(struct fb_var_screeninfo *var, struct fb_info *in return 0; } +/* + * Screen blanking. Behavior is as follows: + * FB_BLANK_UNBLANK: screen unblanked, clocks enabled + * FB_BLANK_NORMAL: screen blanked, clocks enabled + * FB_BLANK_VSYNC, + * FB_BLANK_HSYNC, + * FB_BLANK_POWEROFF: screen blanked, clocks disabled + */ +static int sh_mobile_lcdc_blank(int blank, struct fb_info *info) +{ + struct sh_mobile_lcdc_chan *ch = info->par; + struct sh_mobile_lcdc_priv *p = ch->lcdc; + + /* blank the screen? */ + if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) { + struct fb_fillrect rect = { + .width = info->var.xres, + .height = info->var.yres, + }; + sh_mobile_lcdc_fillrect(info, &rect); + } + /* turn clocks on? */ + if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) { + sh_mobile_lcdc_clk_on(p); + } + /* turn clocks off? */ + if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) { + /* make sure the screen is updated with the black fill before + * switching the clocks off. one vsync is not enough since + * blanking may occur in the middle of a refresh. deferred io + * mode will reenable the clocks and update the screen in time, + * so it does not need this. */ + if (!info->fbdefio) { + sh_mobile_wait_for_vsync(info); + sh_mobile_wait_for_vsync(info); + } + sh_mobile_lcdc_clk_off(p); + } + + ch->blank_status = blank; + return 0; +} + static struct fb_ops sh_mobile_lcdc_ops = { .owner = THIS_MODULE, .fb_setcolreg = sh_mobile_lcdc_setcolreg, @@ -1040,6 +1083,7 @@ static struct fb_ops sh_mobile_lcdc_ops = { .fb_fillrect = sh_mobile_lcdc_fillrect, .fb_copyarea = sh_mobile_lcdc_copyarea, .fb_imageblit = sh_mobile_lcdc_imageblit, + .fb_blank = sh_mobile_lcdc_blank, .fb_pan_display = sh_mobile_fb_pan_display, .fb_ioctl = sh_mobile_ioctl, .fb_open = sh_mobile_open, @@ -1254,7 +1298,7 @@ static int sh_mobile_lcdc_notify(struct notifier_block *nb, switch(action) { case FB_EVENT_SUSPEND: - if (try_module_get(board_cfg->owner) && board_cfg->display_off) { + if (board_cfg->display_off && try_module_get(board_cfg->owner)) { board_cfg->display_off(board_cfg->board_data); module_put(board_cfg->owner); } @@ -1267,7 +1311,7 @@ static int sh_mobile_lcdc_notify(struct notifier_block *nb, mutex_unlock(&ch->open_lock); /* HDMI must be enabled before LCDC configuration */ - if (try_module_get(board_cfg->owner) && board_cfg->display_on) { + if (board_cfg->display_on && try_module_get(board_cfg->owner)) { board_cfg->display_on(board_cfg->board_data, info); module_put(board_cfg->owner); } |