Age | Commit message (Collapse) | Author |
|
Factor out setting DC GPIO and writing buffer content to helper
fbtft_write_buf_dc.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
There are drivers like fb_sh1106 which allocate a txbuf less than 1 KiB.
In this case the message would include "0 KiB buffer memory" what
doesn't make sense and in general I doubt that there is any benefit in
informing the user about allocation of a very small buffer.
Therefore omit this message part if the buffer has less than 1 KiB.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This allows making some of the actual arrays const.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Remove blank line before closing brace to fix the checkpatch
issue blank lines aren't necessary before a close brace '}'.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Indent code to match alignment with open parentheses, to
fix the checkpatch issue alignment should match open parenthesis.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Having a local variable of 1024 bytes on 64-bit architectures is a bit
too much, and I ran into this warning while trying to see what functions
use the largest stack:
drivers/staging/fbtft/fbtft-sysfs.c: In function 'store_gamma_curve':
drivers/staging/fbtft/fbtft-sysfs.c:132:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=]
As there is no need for 64-bit gamma values (on 32-bit architectures,
we don't use those either), I'm changing the type from 'unsigned long'
to 'u32' here, which cuts the required space in half everywhere.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Fix the following errors:
Use 4 digit octal (0777) not decimal permissions
Signed-off-by: Abdul Rauf <abdulraufmujahid@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
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>
|
|
First of all, fbtft in current state doesn't allow to override GPIOs to be
optional, like "reset" one. It might be a bug somewhere, but rather out of
scope of this fix.
Second, not all GPIOs available on the board would be SoC based, some of them
might sit on I2C GPIO expanders, for example, on Intel Edison/Arduino, and thus
any communication with them might sleep.
Besides that using udelay() and mdelay() is kinda resource wasteful.
Summarize all of the above, convert fbtft_reset() function to non-atomic
variant by using gpio_set_value_cansleep(), usleep_range(), and msleep().
Reviewed-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>
|
|
This patch fixes the following checkpatch.pl warning
WARNING: line over 80 characters
Signed-off-by: Maninder Singh <maninder.s2@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
These arrays use -1, -2, and -3 as initiators for various types of
writes to initialize hardware.
No values are used that conflict with using these arrays as s16
instead of int and reducing overall data is good.
$ size drivers/staging/fbtft/built-in.o*
text data bss dec hex filename
116120 32872 4152 153144 25638 drivers/staging/fbtft/built-in.o.new
116104 36344 6200 158648 26bb8 drivers/staging/fbtft/built-in.o.old
Miscellaneous:
o Realign some of the arrays to make reading a bit easier
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Commit 367e8560e8d7a62d96e9b1d644028a3816e04206 introduced a bug
in fbtft-core where fps is always 0, this is because variable
update_time is not assigned correctly.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Fixes: 367e8560e8d7 ("Staging: fbtbt: Replace timespec with ktime_t")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Replace unsigned by unsigned int in fbtft driver. Issue found by
checkpatch.
Signed-off-by: Ming Yang <minos.future@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
txbuflen can be set to arbitrary value by user and it is also set
automagically to the maximum transfer size of the SPI master controller.
Do not allocate the buffer when larger than vmem. When my SPI master
controller reports maximum transfer size 16M the probe of fbtft fails.
Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Replace devm_kzalloc with devm_kcalloc to ensure there are no integer
overflows from the multiplication of a number * sizeof
The following Coccinelle semantic patch was used to make this change:
//<smpl>
@@
expression dev,E1,E2,E3,E4;
@@
- devm_kzalloc(dev,E1*E2*sizeof(E3),E4)
+ devm_kcalloc(dev,E1*E2,sizeof(E3),E4)
//</smpl>
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Unnecessary spi_set_drvdata() has been removed since the driver
core clears the driver data to NULL after device release or on
probe failure. There is no need to manually clear the device
driver data to NULL.
The Coccinelle semantic patch used to make this change is as follows:
@@
struct spi_device *spi;
@@
- spi_set_drvdata(spi, NULL);
// </smpl>
Due to this removal, variable `spi` was unused so dropped `spi`
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Add the required leading * on subsequent lines as well as
move the */ on a separate line. Checkpatch found this issue.
Signed-off-by: Anchal Jain <anchalj109@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This patch makes use of the standard MIPI Display Command Set to remove
some of the magic constants found in source code.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The driver core clears the driver data to NULL after device_release
or on probe failure.
Signed-off-by: Nizam Haider <nijamh@cdac.in>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
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>
|
|
struct timespec will overflow in year 2038, so replace it with
ktime_t. And replace functions that use struct timespec,
timespec_sub with ktime_sub. Also use monotonic time instead of real
time, by replacing getnstimeofday with ktime_get, to be more robust
against leap seconds and settimeofday() calls.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Remove debug messages related to fbtft_par_dbg(DEBUG_BACKLIGHT.. )
as this info can be obtained using kernel function tracer
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
We want the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Remove debug messages related to fbtft_par_dbg(DEBUG_INIT_DISPLAY.. )
as this info can be obtained using kernel function tracer
Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Since the result of the setup function isn't adequate to check
9-bit SPI support, we better check bits_per_word_mask. Btw this
change avoids a NULL pointer dereference with master drivers
without a separate setup function.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
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>
|
|
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>
|
|
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>
|
|
Returning immediately if no platform_data or platform_data->gpios is
specified reduceis code nesting
Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
instead of devm_kzalloc'ing them
Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The only usage of bl_ops variable in fbtft_unregister_backlight function
was assigment of a value to that variable, therefore the assignment and
the variable itself can be safely removed
Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
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>
|
|
Pass platform_data as an argument to fbtft_framebuffer_alloc()
instead of using dev->platform_data.
This fixes an issue where the device comes from Device Tree
and fbtft_probe_common() sets dev->platform_data to allocated
memory. When the module is reloaded, dev->platform_data points
to freed memory.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
When an init sequence is present in the Device Tree,
fbtft_init_display_dt() is used to initialize the display.
Add missing reset function call and activation of
chip select for parallel bus.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
while building on i386 it gives a build warning about msg undeclared.
Fixes: e6ffd1ba55a4931c ("staging: fbtft: fix out of bound access")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
str was 16 bytes but was mentioned as 128 in snprintf.
again msg is 128 bytes but not sufficient to hold the complete debug
message of register values.
Now removed the use of str, msg and print the register values from the
loop.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This patch attempts to simplify the debugging using standard
dev_dbg call so that individual debug prints can be enabled or
disbled by dynamic debugging rather than using module params.
Signed-off-by: Madhusudhanan Ravindran <mravindr@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
If NO_DMA=y:
drivers/built-in.o: In function `fbtft_framebuffer_alloc':
(.text+0xb53cae): undefined reference to `dmam_alloc_coherent'
As DMA support is already optional, make it depend on HAS_DMA.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
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>
|
|
Remove extern keyword from function prototypes to suppress warning from
checkpatch.pl with --strict option: https://lkml.org/lkml/2013/7/23/422
fbtft maintainer Noralf Tronnes advised these functions are internal to
this module & suggested moving these prototypes to new internal.h file.
He also advised fbtft.h file will eventually live in include/linux/fbtft.h
Suggested-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Drew Fustini <pdp7pdp7@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
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>
|
|
This patch fixes checkpatch.pl warning in file fbtft-core.c
WARNING: Possible unnecessary 'out of memory' message
Signed-off-by: Dilek Uzulmez <dilekuzulmez@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This fixes the checkpatch.pl warning:
WARNING: Avoid unnecessary line continuations
Signed-off-by: Yeliz Taneroglu <yeliztaneroglu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
When building for ARM64 the following build warning is seen:
drivers/staging/fbtft/fbtft-core.c:1004:4: warning: format '%d' expects argument of type 'int', but argument 3 has type 'size_t' [-Wformat=]
Use '%zu' to print 'size_t' format.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This patch removes a variable that was simply used to
store the return value of a function call before
returning it.
The issue was detected and resolved using the following
coccinelle script:
@@
identifier len,f;
@@
-int len;
... when != len
when strict
-len =
+return
f(...);
-return len;
Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This patch fixes the following checkpatch.pl error:
fix space prohibited before that ','
Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This fixes sparse warnings like:
warning: symbol XXX was not declared. Should it be static?
by declaring all local functions static.
Signed-off-by: Krzysztof Adamski <k@japko.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This commit adds the core fbtft framework from
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>
|