- 29 May, 2012 40 commits
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Johan Hovold authored
Add sub-driver for the LEDs on National Semiconductor / TI LM3533 lighting power chips. The chip provides 256 brightness levels, hardware accelerated blinking as well as ambient-light-sensor and pwm input control. Signed-off-by:
Johan Hovold <jhovold@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Rob Landley <rob@landley.net> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Jonathan Cameron <jic23@cam.ac.uk> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Alexander Stein authored
When issuing the following command: for I in 0 1 2 3 4 5 6 7; do echo 0 > /sys/class/leds/pca955x\:${I}/brightness; done It is possible that all the pca955x_read_ls calls are done sequentially before any pca955x_write_ls call is done. This updates the LS only to the last LED update in its set. Fix this by using a global lock for the pca995x device during pca955x_led_work. Also used a struct for shared data betreen all LEDs. [akpm@linux-foundation.org: revert unintentional rename of pca955x_ledsel()] Signed-off-by:Alexander Stein <alexander.stein@systec-electronic.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Shuah Khan authored
The leds timer trigger does not currently have an interface to activate a one shot timer. The current support allows for setting two timers, one for specifying how long a state to be on, and the second for how long the state to be off. The delay_on value specifies the time period an LED should stay in on state, followed by a delay_off value that specifies how long the LED should stay in off state. The on and off cycle repeats until the trigger gets deactivated. There is no provision for one time activation to implement features that require an on or off state to be held just once and then stay in the original state forever. Without one shot timer interface, user space can still use timer trigger to set a timer to hold a state, however when user space application crashes or goes away without deactivating the timer, the hardware will be left in that state permanently. As a specific example of this use-case, let's look at vibrate feature on phones. Vibrate function on phones is implemented using PWM pins on SoC or PMIC. There is a need to activate one shot timer to control the vibrate feature, to prevent user space crashes leaving the phone in vibrate mode permanently causing the battery to drain. This trigger exports three properties, activate, state, and duration When transient trigger is activated these properties are set to default values. - duration allows setting timer value in msecs. The initial value is 0. - activate allows activating and deactivating the timer specified by duration as needed. The initial and default value is 0. This will allow duration to be set after trigger activation. - state allows user to specify a transient state to be held for the specified duration. Signed-off-by:
Shuah Khan <shuahkhan@gmail.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: NeilBrown <neilb@suse.de> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Alexander Holler authored
A halted kernel should not show a heartbeat. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by:
Alexander Holler <holler@ahsoftware.de> Cc: Shuah Khan <shuahkhan@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Kim, Milo authored
For better code readability, ALS code is moved to new a function - lm3530_als_configure() Signed-off-by:
Milo(Woogyom) Kim <milo.kim@ti.com> Acked-by:
Linus Walleij <linus.walleij@linaro.org> Cc: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Kim, Milo authored
max brightness is 127, so the range of brt_val should be from 0 to 127 Signed-off-by:
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Shuah Khan authored
Change existing timer trigger to use the new ->activated flag to set activate successful status in activate routine and check it in deactivate routine to do cleanup. Signed-off-by:
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Shuah Khan authored
Change existing triggers backlight, gpio, and heartbeat to use the new ->activated flag to set activate successful status in their activate routines and check it in their deactivate routines to do cleanup. Signed-off-by:
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Shuah Khan authored
Add a new field to led_classdev to save activattion state after activate routine is successful. This saved state is used in deactivate routine to do cleanup such as removing device files, and free memory allocated during activation. Currently trigger_data not being null is used for this purpose. Existing triggers will need changes to use this new field. Signed-off-by:
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Thomas Meyer authored
The advantage of kcalloc is that will prevent integer overflows which could result from the multiplication of number of elements and size and it is also a bit nicer to read. The semantic patch that makes this change is available in https://lkml.org/lkml/2011/11/25/107Signed-off-by:
Thomas Meyer <thomas@m3y3r.de> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Shuah Khan authored
led-class.c and ledtrig-timer.c still use simple_strtoul(). Change them to use kstrtoul() instead of obsolete simple_strtoul(). Also fix the existing int ret declaration to be ssize_t to match the return type for _store functions in ledtrig-timer.c. Signed-off-by:
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David Dajun Chen authored
LED Driver for Dialog Semiconductor DA9052/53 PMICs. [akpm@linux-foundation.org: make led_reg static] Signed-off-by:
David Dajun Chen <dchen@diasemi.com> Signed-off-by:
Ashish Jangam <ashish.jangam@kpitcummins.com> Reviewed-by:
Lars-Peter Clausen <lars@metafoo.de> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Dan Carpenter authored
Gcc 4.6.2 complains that: drivers/leds/leds-lp5521.c: In function `lp5521_load_program': drivers/leds/leds-lp5521.c:214:21: warning: `mode' may be used uninitialized in this function [-Wuninitialized] drivers/leds/leds-lp5521.c: In function `lp5521_probe': drivers/leds/leds-lp5521.c:788:5: warning: `buf' may be used uninitialized in this function [-Wuninitialized] drivers/leds/leds-lp5521.c:740:6: warning: `ret' may be used uninitialized in this function [-Wuninitialized] These are real problems if lp5521_read() returns an error. When that happens we should handle it, instead of ignoring it or doing a bitwise OR with all the other error codes and continuing. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: Milo <Milo.Kim@ti.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Bryan Wu <bryan.wu@canonical.com> Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
Jingoo Han <jg1.han@samsung.com> Cc: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
Marek Vasut <marek.vasut@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
Michael Hennerich <michael.hennerich@analog.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Jingoo Han authored
The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc of these functions. Signed-off-by:
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Corentin Chary authored
In all these files, the .power field was never correctly initialized. Signed-off-by:
Corentin Chary <corentin.chary@gmail.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Dave Airlie <airlied@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Jingoo Han authored
This driver uses pr_debug(), so provide it with the appropriate prefixing. Signed-off-by:
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Jingoo Han authored
Use pr_err() instead of printk() to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warnings as below: WARNING: printk() should include KERN_ facility level [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
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Jingoo Han authored
Use pr_info() instead of printk() to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warning as below: WARNING: Prefer pr_info(... to printk(KERN_INFO, ... [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
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Jingoo Han authored
Use pr_err()/pr_info() instead of printk() to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warnings as below: WARNING: Prefer pr_err(... to printk(KERN_ERR, ... WARNING: Prefer pr_info(... to printk(KERN_INFO, ... [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
Kristoffer Ericson <kristoffer.ericson@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Jingoo Han authored
Use pr_info() instead of printk() to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warnings as below: WARNING: printk() should include KERN_ facility level [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
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Jingoo Han authored
Use pr_err()/pr_info() instead of printk() to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warnings as below: WARNING: printk() should include KERN_ facility level WARNING: Prefer pr_err(... to printk(KERN_ERR, ... [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
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Jingoo Han authored
Use pr_debug()/pr_err() instead of printk() to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warnings as below: WARNING: Prefer pr_debug(... to printk(KERN_DEBUG, ... WARNING: Prefer pr_err(... to printk(KERN_ERR, ... [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
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Jingoo Han authored
Use pr_warn() and pr_debug() instead of printk to allow dynamic debugging. The pr_fmt prefix for pr_ macros is used. Also fix checkpatch warnings as below: WARNING: Prefer pr_warn(... to printk(KERN_WARNING, ... [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by:
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Jingoo Han authored
The usage of strict_strtoul() is not preferred. Thus, kstrtoul should be used. Signed-off-by:
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Jingoo Han authored
The usage of strict_strtoul() is not preferred. Thus, kstrtoul should be used. Signed-off-by:
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Jingoo Han authored
The usage of strict_strtoul() is not preferred. Thus, kstrtoul should be used. Signed-off-by:
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Johan Hovold authored
Add sub-driver for the backlights on National Semiconductor / TI LM3533 lighting power chips. The chip provides 256 brightness levels and ambient-light-sensor and pwm input control. [akpm@linux-foundation.org: fix warning] [akpm@linux-foundation.org: fix the type of `mode'] Signed-off-by:
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H Hartley Sweeten authored
Include the header to pickup the exported symbol prototype. Quiets the sparse warning: warning: symbol 'apple_bl_register' was not declared. Should it be static? warning: symbol 'apple_bl_unregister' was not declared. Should it be static? [akpm@linux-foundation.org: fix resulting build error] Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by:
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