linux-toradex.git/drivers/video/fbdev/simplefb.c, branch v4.9.16

simplefb: Disable and release clocks and regulators in destroy callback

2016-09-27T08:21:36+00:00

simplefb gets unregister when a proper framebuffer driver comes in and
kicks it out. However the claimed clocks and regulators stay enabled
as they are only released in the platform device remove function, which
in theory would never get called.

Move the clock/regulator cleanup into the framebuffer destroy callback,
which gets called as part of the framebuffer unregister process.

Note this introduces asymmetry in how the resources are claimed and
released.

Signed-off-by: Chen-Yu Tsai 
Reviewed-by: Hans de Goede 
Signed-off-by: Tomi Valkeinen

video: fbdev: constify fb_fix_screeninfo and fb_var_screeninfo structures

2016-09-27T08:16:35+00:00

These structures are only used to copy into other structures, so declare
them as const.

The semantic patch that makes this change in the fb_fix_screeninfo case is
as follows (http://coccinelle.lip6.fr/).  The fb_var_screeninfo case is
analogous.

// 
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct fb_fix_screeninfo i@p = { ... };

@ok@
identifier r.i;
expression e;
position p;
@@
e = i@p

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct fb_fix_screeninfo e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct fb_fix_screeninfo i = { ... };
// 

Signed-off-by: Julia Lawall 
Signed-off-by: Tomi Valkeinen

simplefb: Remove impossible check for of_clk_get_parent_count() < 0

2016-02-27T00:01:32+00:00

The check for < 0 is impossible now that
of_clk_get_parent_count() returns an unsigned int. Simplify the
code and update the types.

Cc: Hans de Goede 
Cc: Jean-Christophe Plagniol-Villard 
Acked-by: Tomi Valkeinen 
Cc: 
Signed-off-by: Stephen Boyd

simplefb: Claim and enable regulators

2015-12-15T13:41:21+00:00

This claims and enables regulators listed in the simple framebuffer dt
node. This is needed so that regulators powering the display pipeline
and external hardware, described in the device node and known by the
kernel code, will remain properly enabled.

Signed-off-by: Chen-Yu Tsai 
Acked-by: Mark Brown 
Signed-off-by: Tomi Valkeinen

simplefb: Include clk.h

2015-07-20T17:52:46+00:00

This driver uses the consumer API, so include clk.h explicitly
instead of impliclty through the provider API.

Cc: Luc Verhaegen 
Cc: Hans de Goede 
Acked-by: Geert Uytterhoeven 
Cc: Maxime Ripard 
Cc: David Herrmann 
Cc: Tomi Valkeinen 
Signed-off-by: Stephen Boyd

simplefb: Fix build failure on Sparc

2015-01-13T11:25:16+00:00

of_platform_device_create is only defined when CONFIG_OF_ADDRESS is set,
which is normally always the case when CONFIG_OF is defined, except on Sparc,
so explicitly check for CONFIG_OF_ADDRESS rather then for CONFIG_OF.

Reported-by: kbuild test robot 
Signed-off-by: Hans de Goede 
Signed-off-by: Tomi Valkeinen

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09+00:00

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev__once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...

simplefb: Fix build errors when CONFIG_COMMON_CLK is not defined

2014-11-25T12:10:28+00:00

Both CONFIG_OF and CONFIG_COMMON_CLK must be defined to be able to use of
clocks.

Signed-off-by: Hans de Goede 
Signed-off-by: Tomi Valkeinen

simplefb: Change simplefb_init from module_init to fs_initcall

2014-11-14T13:29:14+00:00

One of the reasons for having the simplefb nodes in /chosen, and doing
explicit enumeration of the nodes there, is too allow enumerating them sooner,
so that we get a console earlier on.

Doing this earlier then fs_initcall is not useful, since the fb only turns
into a console when fbcon intializes, which is a fs_initcall too.

Signed-off-by: Hans de Goede 
Signed-off-by: Tomi Valkeinen

simplefb: Add support for enumerating simplefb dt nodes in /chosen

2014-11-14T13:29:04+00:00

Update simplefb to support the new preferred location for simplefb dt nodes
under /chosen.

Signed-off-by: Hans de Goede 
Signed-off-by: Tomi Valkeinen