diff options
| author |   Tony Breeds <tony@bakeyournoodle.com> | 2012-07-18 06:49:04 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-07-27 11:42:33 +1000 |
| commit | e5ae3cdfd5741364e39705592b9aee9fb836f3d3 (patch) | |
| tree | 9545829cf589e95a12948ef694dbf99d665d6835 /drivers/video | |
| parent | powerpc: Lack of firmware flash support is not an error (diff) | |
| download | linux-dev-e5ae3cdfd5741364e39705592b9aee9fb836f3d3.tar.xz linux-dev-e5ae3cdfd5741364e39705592b9aee9fb836f3d3.zip | |
radeonfb: Add quirk for the graphics adapter in some JSxx
These devices are set to 640x480 by firmware, switch them to 800x600@60
so that the graphical installer can run on remote console.
Reported by IBM during SLES10 SP2 beta testing:
https://bugzilla.novell.com/show_bug.cgi?id=461002
LTC50817
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/aty/radeon_monitor.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/video/aty/radeon_monitor.c b/drivers/video/aty/radeon_monitor.c index 9261c918fde8..5c23eac0eb9a 100644 --- a/drivers/video/aty/radeon_monitor.c +++ b/drivers/video/aty/radeon_monitor.c @@ -730,6 +730,25 @@ static void radeon_videomode_to_var(struct fb_var_screeninfo *var, var->vmode = mode->vmode; } +#ifdef CONFIG_PPC_PSERIES +static int is_powerblade(const char *model) +{ + struct device_node *root; + const char* cp; + int len, l, rc = 0; + + root = of_find_node_by_path("/"); + if (root && model) { + l = strlen(model); + cp = of_get_property(root, "model", &len); + if (cp) + rc = memcmp(model, cp, min(len, l)) == 0; + of_node_put(root); + } + return rc; +} +#endif + /* * Build the modedb for head 1 (head 2 will come later), check panel infos * from either BIOS or EDID, and pick up the default mode @@ -865,6 +884,22 @@ void __devinit radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_ has_default_mode = 1; } +#ifdef CONFIG_PPC_PSERIES + if (!has_default_mode && ( + is_powerblade("IBM,8842") || /* JS20 */ + is_powerblade("IBM,8844") || /* JS21 */ + is_powerblade("IBM,7998") || /* JS12/JS21/JS22 */ + is_powerblade("IBM,0792") || /* QS21 */ + is_powerblade("IBM,0793") /* QS22 */ + )) { + printk("Falling back to 800x600 on JSxx hardware\n"); + if (fb_find_mode(&info->var, info, "800x600@60", + info->monspecs.modedb, + info->monspecs.modedb_len, NULL, 8) != 0) + has_default_mode = 1; + } +#endif + /* * Still no mode, let's pick up a default from the db */ |