diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 17:31:38 +0400 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 09:10:19 +0400 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/fbdev/via/via_aux_edid.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) | |
download | linux-f7018c21350204c4cf628462f229d44d03545254.tar.xz |
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/fbdev/via/via_aux_edid.c')
-rw-r--r-- | drivers/video/fbdev/via/via_aux_edid.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/video/fbdev/via/via_aux_edid.c b/drivers/video/fbdev/via/via_aux_edid.c new file mode 100644 index 000000000000..754d4509033f --- /dev/null +++ b/drivers/video/fbdev/via/via_aux_edid.c @@ -0,0 +1,100 @@ +/* + * Copyright 2011 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation; + * either version 2, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even + * the implied warranty of MERCHANTABILITY or FITNESS FOR + * A PARTICULAR PURPOSE.See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ +/* + * generic EDID driver + */ + +#include <linux/slab.h> +#include <linux/fb.h> +#include "via_aux.h" +#include "../edid.h" + + +static const char *name = "EDID"; + + +static void query_edid(struct via_aux_drv *drv) +{ + struct fb_monspecs *spec = drv->data; + unsigned char edid[EDID_LENGTH]; + bool valid = false; + + if (spec) { + fb_destroy_modedb(spec->modedb); + } else { + spec = kmalloc(sizeof(*spec), GFP_KERNEL); + if (!spec) + return; + } + + spec->version = spec->revision = 0; + if (via_aux_read(drv, 0x00, edid, EDID_LENGTH)) { + fb_edid_to_monspecs(edid, spec); + valid = spec->version || spec->revision; + } + + if (!valid) { + kfree(spec); + spec = NULL; + } else + printk(KERN_DEBUG "EDID: %s %s\n", spec->manufacturer, spec->monitor); + + drv->data = spec; +} + +static const struct fb_videomode *get_preferred_mode(struct via_aux_drv *drv) +{ + struct fb_monspecs *spec = drv->data; + int i; + + if (!spec || !spec->modedb || !(spec->misc & FB_MISC_1ST_DETAIL)) + return NULL; + + for (i = 0; i < spec->modedb_len; i++) { + if (spec->modedb[i].flag & FB_MODE_IS_FIRST && + spec->modedb[i].flag & FB_MODE_IS_DETAILED) + return &spec->modedb[i]; + } + + return NULL; +} + +static void cleanup(struct via_aux_drv *drv) +{ + struct fb_monspecs *spec = drv->data; + + if (spec) + fb_destroy_modedb(spec->modedb); +} + +void via_aux_edid_probe(struct via_aux_bus *bus) +{ + struct via_aux_drv drv = { + .bus = bus, + .addr = 0x50, + .name = name, + .cleanup = cleanup, + .get_preferred_mode = get_preferred_mode}; + + query_edid(&drv); + + /* as EDID devices can be connected/disconnected just add the driver */ + via_aux_add(&drv); +} |