linux-stable.git/drivers/video/matrox, branch linux-3.14.y

matroxfb: perform a dummy read of M_STATUS

2014-07-01T03:11:56+00:00

commit 972754cfaee94d6e25acf94a497bc0a864d91b7e upstream.

I had occasional screen corruption with the matrox framebuffer driver and
I found out that the reason for the corruption is that the hardware
blitter accesses the videoram while it is being written to.

The matrox driver has a macro WaitTillIdle() that should wait until the
blitter is idle, but it sometimes doesn't work. I added a dummy read
mga_inl(M_STATUS) to WaitTillIdle() to fix the problem. The dummy read
will flush the write buffer in the PCI chipset, and the next read of
M_STATUS will return the hardware status.

Since applying this patch, I had no screen corruption at all.

Signed-off-by: Mikulas Patocka 
Signed-off-by: Tomi Valkeinen 
Signed-off-by: Greg Kroah-Hartman

matroxfb: restore the registers M_ACCESS and M_PITCH

2014-05-13T11:32:50+00:00

commit a772d4736641ec1b421ad965e13457c17379fc86 upstream.

When X11 is running and the user switches back to console, the card
modifies the content of registers M_MACCESS and M_PITCH in periodic
intervals.

This patch fixes it by restoring the content of these registers before
issuing any accelerator command.

Signed-off-by: Mikulas Patocka 
Signed-off-by: Tomi Valkeinen 
Signed-off-by: Greg Kroah-Hartman

video: Remove unnecessary semicolons

2013-10-30T11:34:52+00:00

These aren't necessary after switch, for, and if blocks.

Signed-off-by: Joe Perches 
Signed-off-by: Tomi Valkeinen

framebuffer: Use fb_

2013-10-29T10:53:07+00:00

Neaten and shorten the code using the new fb_ macros.

Signed-off-by: Joe Perches 
Signed-off-by: Tomi Valkeinen

video/matrox/matroxfb_maven: Use module_i2c_driver to register driver

2013-09-19T10:30:10+00:00

Removing some boilerplate by using module_i2c_driver instead of calling
register and unregister in the otherwise empty init/exit functions.
Also removed a useless comment as suggested by Jean Delvare.

Signed-off-by: Peter Huewe 
Signed-off-by: Jean Delvare 
Cc: Jean-Christophe Plagniol-Villard 
Cc: Tomi Valkeinen 
Signed-off-by: Tomi Valkeinen

matroxfb: replace kmalloc and memset with kzalloc.

2013-07-26T08:35:17+00:00

Signed-off-by: Alexandru Juncu 
Signed-off-by: Tomi Valkeinen

matroxfb: convert struct i2c_msg initialization to C99 format

2013-04-29T22:54:26+00:00

Convert the struct i2c_msg initialization to C99 format.  This makes
maintaining and editing the code simpler.  Also helps once other fields
like transferred are added in future.

Thanks to Julia Lawall for automating the conversion.

Signed-off-by: Shubhrajyoti D 
Signed-off-by: Jean Delvare 
Cc: Julia Lawall 
Cc: Florian Tobias Schandinat 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING

2012-05-30T08:55:34+00:00

Since there are uses for I2C_M_NOSTART which are much more sensible and
standard than most of the protocol mangling functionality (the main one
being gather writes to devices where something like a register address
needs to be inserted before a block of data) create a new I2C_FUNC_NOSTART
for this feature and update all the users to use it.

Also strengthen the disrecommendation of the protocol mangling while we're
at it.

In the case of regmap-i2c we remove the requirement for mangling as
I2C_M_NOSTART is the only mangling feature which is being used.

Signed-off-by: Mark Brown 
Acked-by: Wolfram Sang 
Signed-off-by: Jean Delvare

fbdev: matroxfb: Fix compilation after fb_var_screeninfo change

2011-12-21T02:26:11+00:00

Commit fb21c2f42879 ("fbdev: Add FOURCC-based format configuration API")
modified the layout of the fb_var_screeninfo structure. Remove zero
fields from the static initializers in the matroxfb driver accordingly.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Florian Tobias Schandinat

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi