This issue is caught by checkpatch.pl and is related to the following
warning:
- CHECK: Please don't use multiple blank lines
Signed-off-by: Emmanuil Chatzipetru <chatzi.emanuel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This issue is caught by checkpatch.pl and is related to the following
warning:
- CHECK: spaces preferred around that '/' (ctx:VxV)
Signed-off-by: Emmanuil Chatzipetru <chatzi.emanuel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dcon_was_irq(); should return a boolean value if PMIO_Rx50[6] is either
set or unset, which is evaluated in the first return statement. Therefore,
the following return statement is redundant and thus, removed.
Signed-off-by: Emmanuil Chatzipetru <chatzi.emanuel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This issue is caught by checkpatch.pl and is related to the following
warning:
- CHECK: Alignment should match open parenthesis
Signed-off-by: Emmanuil Chatzipetru <chatzi.emanuel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replaces bit shifting on 1 with the BIT(x) macro
as it's extensively used by other function in the file olpc_dcon.h .
Signed-off-by: Anchal Jain <anchalj109@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replaces type u_int8_t with u8 as suggested by checkpatch.pl.
Signed-off-by: sayli karnik <karniksayli1995@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 82ef33af9d. It turns
out these machines are still out there, and the original patch broke
them. So revert it, adding back the driver, so people's machines still
work properly.
Reported-by: James Cameron <quozl@laptop.org>
Cc: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Problem found using checkpatch.pl
CHECK: Comparison to NULL could be written "(!)dcon_device"
Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch "uint16_t" type instead of "u16" type was used.
checkpatch.pl issue.
Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Braces in single statement blocks are not needed.
Found by checkpatch.pl
Signed-off-by: Ksenija Stanojevic<ksenija.stanojevic@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Struct timespec will overflow in year 2038, here it will not cause an
overflow because it is used with timespec_sub, but still has to be
removed as part of y2038 changes. Replace it with ktime_t. Also use
monotonic instead of real-time by replacing functions getnstimeofday
with ktime_get.
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>
Using 'extern' is not necessary for function prototypes.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This file does not use any pci APIs, drop
pci header includes.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch gets rid of the following sparse warning:
drivers/staging/olpc_dcon/olpc_dcon.c:787:19: warning: symbol 'dcon_driver' was not declared. Should it be static?
Signed-off-by: Murilo Opsfelder Araujo <mopsfelder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixed a typo in olpc_dcon_xo_1.c file.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The backlight_device_unregister() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
WARNING: Missing a blank line after declarations
Signed-off-by: Nicolas Joseph <nicolas.joseph@homecomputing.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This coding style error was detected using the checkpatch.pl script
Signed-off-by: Gary Servin <garyservin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The lock sequence of dcon_blank_fb(fb_info->lock ---> console_lock) is against
with the one of console_callback(console_lock ---> fb_info->lock), it'll
lead to a potential dead lock, so reorder the lock sequence of dcon_blank_fb
to avoid the potential dead lock.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix build errors when GPIO_CS5535=m and FB_OLPC_DCON=y
by preventing that kconfig combination.
These build errors are caused by having a kconfig bool symbol
(FB_OLPC_DCON_1) that depend on a tristate symbol (GPIO_CS5535),
but when the tristate symbol is =m, the bool symbol is =y.
drivers/built-in.o: In function `dcon_read_status_xo_1':
olpc_dcon_xo_1.c:(.text+0x359531): undefined reference to `cs5535_gpio_set'
drivers/built-in.o: In function `dcon_wiggle_xo_1':
olpc_dcon_xo_1.c:(.text+0x35959f): undefined reference to `cs5535_gpio_set'
olpc_dcon_xo_1.c:(.text+0x359610): undefined reference to `cs5535_gpio_clear'
drivers/built-in.o:olpc_dcon_xo_1.c:(.text+0x3596a1): more undefined references to `cs5535_gpio_clear' follow
drivers/built-in.o: In function `dcon_wiggle_xo_1':
olpc_dcon_xo_1.c:(.text+0x359708): undefined reference to `cs5535_gpio_set'
drivers/built-in.o: In function `dcon_init_xo_1':
olpc_dcon_xo_1.c:(.text+0x35989b): undefined reference to `cs5535_gpio_clear'
olpc_dcon_xo_1.c:(.text+0x3598b5): undefined reference to `cs5535_gpio_isset'
olpc_dcon_xo_1.c:(.text+0x359963): undefined reference to `cs5535_gpio_setup_event'
olpc_dcon_xo_1.c:(.text+0x359980): undefined reference to `cs5535_gpio_set_irq'
olpc_dcon_xo_1.c:(.text+0x359a36): undefined reference to `cs5535_gpio_set'
However, adding GPIO_CS5535 to the Kconfig dependencies also creates
a kconfig recursive dependency error on powerpc:
drivers/i2c/Kconfig:5:error: recursive dependency detected!
drivers/i2c/Kconfig:5: symbol I2C is selected by FB_OLPC_DCON
drivers/staging/olpc_dcon/Kconfig:1: symbol FB_OLPC_DCON depends on GPIO_CS5535
drivers/gpio/Kconfig:577: symbol GPIO_CS5535 depends on GPIOLIB
drivers/gpio/Kconfig:38: symbol GPIOLIB is selected by ARCH_REQUIRE_GPIOLIB
drivers/gpio/Kconfig:23: symbol ARCH_REQUIRE_GPIOLIB is selected by MCU_MPC8349EMITX
arch/powerpc/platforms/Kconfig:351: symbol MCU_MPC8349EMITX depends on I2C
This is due to FB_OLPC_DCON selecting I2C instead of depending on it,
so change the select to a dependency.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Daniel Drake <dsd@laptop.org>
Cc: Jens Frederich <jfrederich@gmail.com>
Cc: Jon Nettleton <jon.nettleton@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix build errors when GPIO_CS5535=m and FB_OLPC_DCON=y
by preventing that kconfig combination.
These build errors are caused by having a kconfig bool symbol
(FB_OLPC_DCON_1) that depend on a tristate symbol (GPIO_CS5535),
but when the tristate symbol is =m, the bool symbol is =y.
drivers/built-in.o: In function `dcon_read_status_xo_1':
olpc_dcon_xo_1.c:(.text+0x359531): undefined reference to `cs5535_gpio_set'
drivers/built-in.o: In function `dcon_wiggle_xo_1':
olpc_dcon_xo_1.c:(.text+0x35959f): undefined reference to `cs5535_gpio_set'
olpc_dcon_xo_1.c:(.text+0x359610): undefined reference to `cs5535_gpio_clear'
drivers/built-in.o:olpc_dcon_xo_1.c:(.text+0x3596a1): more undefined references to `cs5535_gpio_clear' follow
drivers/built-in.o: In function `dcon_wiggle_xo_1':
olpc_dcon_xo_1.c:(.text+0x359708): undefined reference to `cs5535_gpio_set'
drivers/built-in.o: In function `dcon_init_xo_1':
olpc_dcon_xo_1.c:(.text+0x35989b): undefined reference to `cs5535_gpio_clear'
olpc_dcon_xo_1.c:(.text+0x3598b5): undefined reference to `cs5535_gpio_isset'
olpc_dcon_xo_1.c:(.text+0x359963): undefined reference to `cs5535_gpio_setup_event'
olpc_dcon_xo_1.c:(.text+0x359980): undefined reference to `cs5535_gpio_set_irq'
olpc_dcon_xo_1.c:(.text+0x359a36): undefined reference to `cs5535_gpio_set'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Daniel Drake <dsd@laptop.org>
Cc: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove unnecessary work pending test before calling schedule_work().
It has been tested in queue_work_on() already. No functional changed.
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Cc: Jens Frederich <jfrederich@gmail.com>
Cc: Daniel Drake <dsd@laptop.org>
Cc: Jon Nettleton <jon.nettleton@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1. Console event notifier support: No one I've asked knows what this
all about.
2. Audit code for unnecessary code: This is done.
3. Verify sane i2cAPI usage: This is also done.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The TODO entry - drop global variables, use a proper olpc_dcon_priv
struct - is already finished. The driver has no global variables.
It uses the private structure 'dcon_priv'.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Using an int which is casted to unsigned char as inbuf is messy.
The code won't work on big endian systems. The patch should fix
this.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replace some magic numbers. I believe it makes
the driver more readable.
The magic number 0x26 is the XO system embedded controller
(EC) command 'DCON power enable/disable'.
Number 0x41, and 0x42 are special memory controller settings
register. The 0x41 initialize bit sequence 0x101 means:
enable memory power down function and special SDRAM clock
delay for synchronize SDRAM output and clock signal.
The 0x42 initialize squence 0x101 is wrong. According to
the specification Bit 8 is reserved, thus not in use.
I removed it.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andres Salomon and Chris Ball are not longer at OLPC.
Daniel Drake is the new OLPC go-to guy. And I wanna
also be CC'd on DCON and other OLPC patches.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The FB_OLPC_DCON help section is to short according to checkpatch.pl.
We want more information about the controller type, its task, its video
pipeline position and so on.
There are no style issues, remove checkpatch.pl TODO entry.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The resolution of msleep is related to HZ, so with HZ set to
100 any msleep of less then 10ms will become ~10ms. This is
not what we want. Use usleep_range to get more control of
what is happening here.
Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
..instead of the i2c_driver hooks. This should silence the following
runtime warnings:
[ 17.820321] i2c-core: driver [olpc_dcon] using legacy suspend method
[ 17.846082] i2c-core: driver [olpc_dcon] using legacy resume method
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This code looks in the PCI config space for pin addresses and sets up some
stuff. However, Openfirmware has already done this for us, so there's no
need to ever do it in Linux. According to Mitch Bradley, this OFW has been
doing this for us since at least B3 builds (pre-mass production).
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Previously we registered a notifier block to inform us of any framebuffer
device changes; if the screen was blanked or unblanked, we'd put the DCON
to sleep or wake it up.
Turns out that the backlight code registers a notifier block as well
and calls the update_status hook, so we can just use that to put the DCON
to sleep. For those status updates where the blanking isn't changed,
dcon_sleep will do nothing.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Another global variable (dcon_wait_queue) moved into the dcon_priv struct.
In the process, replace an instance of a manually implemented
wait_event_timeout. This code came from Jordan's original gxfb_dcon.c
driver waaaay back in 2006; well past time for a replacement.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'useaa' module parameter was a workaround for a buggy DCON prototype
not supporting the optional anti-aliasing mode properly. There's no
reason to disable it any more, so drop the option.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Switch over to using olpc-ec.h in multiple steps, so as not to break builds.
This covers every driver that calls olpc_ec_cmd().
Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Paul Fox <pgf@laptop.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Quoted strings that were broken over multiple lines are put on a
single line for easier grep'ability.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The below patch fixes a typo I found while reading.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Cc: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As Dan mentioned, dcon_write() will only write u16 values. The
appropriate parts have been changed. As a result of module_param()
not accepting u16 as a valid data type, ushort is used.
Signed-off-by: Valentin Rothberg <valentinrothberg@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As noted by the checkpatch script, strict_strtoul is obsolete. Unsigned
longs are used, so it seems good to take kstrtoul.
Signed-off-by: Valentin Rothberg <valentinrothberg@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Change ->read_status() by separating the error handling and the
status bits. This also fixes a signedness bug in dcon_interrupt()
that would break the error handling.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Andres Salomon <dilinger@queued.net>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
