Commit graph

21 commits

Author SHA1 Message Date
Jeremy Sowden 27a0eb8fb6 staging: fbtft: fixed format-string errors.
Added __printf attribute to declaration of fbtft_dbg_hex and fixed
mismatches between format-specifiers and arguments in several function
calls.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-18 07:06:08 +01:00
Nishad Kamdar c440eee1a7 Staging: fbtft: Switch to the gpio descriptor interface
This switches the fbtft driver to use GPIO descriptors
rather than numerical gpios:

Utilize the GPIO library's intrinsic handling of OF GPIOs
and polarity. If the line is flagged active low, gpiolib
will deal with this.

Remove gpios from platform device structure. Neither assign
statically numbers to gpios in platform device nor allow
gpios to be parsed as module parameters.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-18 11:01:02 +01:00
Greg Kroah-Hartman 78c00ccc52 staging: fbtft: remove redundant license text
Now that the SPDX tag is in all fbtft files, that identifies the license
in a specific and legally-defined manner.  So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-15 16:03:46 +01:00
Greg Kroah-Hartman 783de57c52 staging: fbtft: add SPDX identifiers
It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Fix up the all of the staging fbtft drivers to have a proper SPDX
identifier, based on the license text in the file itself.  The SPDX
identifier is a legally binding shorthand, which can be used instead of
the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-15 16:03:46 +01:00
Colin Ian King 0d586255ca staging: fbtft: remove redundant initialization of txbuf16
txbuf16 is being initialized at declaration time and then later
set to another value without it being read inbetween, hence making
the initialization redundant.  Fix this by setting txbuf16 just
the once. Also clean up some incorrect indentations. Cleans up
clang build warning:

warning: Value stored to 'txbuf16' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-18 12:23:40 +02:00
Anthony Brandon eb1d69c21c staging:fbtft: Fix some warnings regarding types.
Running make C=1 M=drivers/staging/fbtft reports warnings about conversion
from __be16 to unsigned short. Change the type of the variables being
assigned into __be16 to remove those warnings.

Signed-off-by: Anthony Brandon <anthony@amarulasolutions.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-06 09:16:59 +01:00
Umang Raghuvanshi 62f79ecdb8 staging: fbtft: fix unaligned parentheses
Fix the following formatting issues:
CHECK: Alignment should match open parenthesis

Signed-off-by: Umang Raghuvanshi <u@umangis.me>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-27 09:40:56 +01:00
Andy Shevchenko 7c3eaadd02 staging: fbtft: remove custom DMA mapped buffer
There is no need to duplicate what SPI core already does, i.e. mapping buffers
for DMA capable transfers.

Remove all related pices of code.

Note, that code, besides its redundancy, was buggy: DMA address potentially can
be 0, SPI slave device has nothing to do with DMA capable device properties and
DMA mask in particular.

Suggested-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-19 12:50:27 +01:00
Janani Ravichandran 264cd1d1c2 staging: fbtft: fb_ra8875.c: Remove unneeded void pointer cast
Void pointers need not be cast to other pointer types.
Semantic patch used:

@r@
expression x;
void* e;
type T;
identifier f;
@@

(
  *((T *)e)
|
  ((T *)x) [...]
|
  ((T *)x)->f
|
- (T *)
  e
)

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Alison Schofield 3589d3c9e3 staging: fbtft: replace ternary operator with min macro
Use macro min() to get the minimum of two values for
brevity and readability.

Found using Coccinelle:
@@ type T; T x; T y; @@
(
- x < y ? x : y
+ min(x,y)
|
- x > y ? x : y
+ max(x,y)
)

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-11 22:09:09 -08:00
Shivani Bhardwaj e788b70f3b Staging: fbtft: fb_ra8875: Remove useless cast
Remove explicit type conversion as it is not required.
Semantic patch used:

@@
type T;
T e;
identifier x;
@@

* T x = (T)e;

Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-16 22:56:23 -07:00
Lars Svensson 4b6dc179dc staging: fbtft: use alternate screen pointer
Member screen_base in struct fb_info is declared with __iomem
qualifier causing sparse warnings when used as a regular ponter.
To avoid the warnings, instead use alternate non-__iomem pointer,
screen_buffer, troughout the driver.

Signed-off-by: Lars Svensson <lars1.svensson@sonymobile.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-13 10:51:30 -07:00
Anish Bhatt 94c0a54427 staging/fbtft : Add missing whitespace around operators
Add blank spaces around operators where recommended
by checkpatch.pl

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-12 18:24:37 -07:00
Anish Bhatt 1014c2ce08 staging/fbtft : Fix multiple/missing blank line issues
Remove or add blank lines as recommended by checkpatch.pl

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-12 18:24:36 -07:00
Anish Bhatt e73221877a staging/fbtft : Remove repeated set_addr_win debug messages
fbtft_par_dbg(DEBUG_SET_ADDR_WIN.. ) is repeated in every
set_addr_win() handler, this could be replicated by using the kernel
function tracer instead.

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Suggested-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-12 18:24:36 -07:00
Anish Bhatt 4a1a838362 staging/fbtft : Remove FSF mailing address
checkpatch.pl recommends that this is no longer required.
Also replaces ASCII-art copyright notice with simple text

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-12 18:24:35 -07:00
Anton Gerasimov 3c588452c2 staging: fbtft: split long strings
Split long function declarations, function calls, comments etc.

Signed-off-by: Anton Gerasimov <anton.gerasimov@openmailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-06-13 14:48:26 -07:00
Masanari Iida 92def781ee staging: fbtft: Fix typo in fbtft
This patch fix spelling typo in comment and printk within fbtft

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26 13:07:29 +01:00
Haneen Mohammed aed1c72e44 Staging: fbtft: clean dev_err() logging
This patch removes  __func__ from dev_err. dev_err includes information about:
(devcice, driver, specific instance of device, etc) in the log printout.
This was done using Coccinelle, with the following semantic patch:

@a@
expression E, R;
expression  msg;
@@

dev_err(E, msg, __func__, R);

@script:python b@
e << a.msg;
y;
@@

if(e.find("%s: ") == True):
	m = e.replace("%s: ", "", 1);
	coccinelle.y = m;
elif(e.find("%s ") == True):
	m = e.replace("%s ", "", 1);
	coccinelle.y = m;
elif(e.find("%s:") == True):
	m = e.replace("%s:", "", 1);
	coccinelle.y = m;
else:
	m = e.replace("%s", "",1);
	coccinelle.y = m;

@c@
expression a.E, a.msg, a.R;
identifier  b.y;
@@

- dev_err(E, msg, __func__, R);
+ dev_err(E, y, R);

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-06 15:55:36 -08:00
Aya Mahfouz bedc844d82 staging: fbtft: fix space prohibited before that ','
This patch fixes the following checkpatch.pl error:
space prohibited before that ','

Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-26 13:06:13 -08:00
Thomas Petazzoni d8a53a9d0b staging: fbtft: add fb_ra8875 driver
This commit adds the fb_ra8875 driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-17 16:46:47 -08:00