- 23 Mar, 2012 40 commits
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Akinobu Mita authored
- Generate a 64-bit pattern more efficiently memchr_inv needs to generate a 64-bit pattern filled with a target character. The operation can be done by more efficient way. - Don't call the slow check_bytes() if the memory area is 64-bit aligned memchr_inv compares contiguous 64-bit words with the 64-bit pattern as much as possible. The outside of the region is checked by check_bytes() that scans for each byte. Unfortunately, the first 64-bit word is unexpectedly scanned by check_bytes() even if the memory area is aligned to a 64-bit boundary. Both changes were originally suggested by Eric Dumazet. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Suggested-by:
Eric Dumazet <eric.dumazet@gmail.com> Cc: Brian Norris <computersforpeace@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Bryan Wu authored
After moving some core functions to led-core.c, led-class.c can be built as module again. Signed-off-by:
Bryan Wu <bryan.wu@canonical.com> Acked-by:
Richard Purdie <richard.purdie@linuxfoundation.org> Acked-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Axel Lin authored
Improve the readability by moving the code setting gen_config to one place. [akpm@linux-foundation.org: fix some patch skew] Signed-off-by:
Axel Lin <axel.lin@gmail.com> Cc: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com> Cc: "Milo(Woogyom) Kim" <milo.kim@ti.com> Cc: Richard Purdie <rpurdie@rpsys.net> Acked-by:
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Axel Lin authored
Signed-off-by:
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Kim, Milo authored
Use 'pdata' rather than 'pltfm' in lm3530_init_registers(). Signed-off-by:
Milo(Woogyom) Kim <milo.kim@ti.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Axel Lin <axel.lin@gmail.com> Signed-off-by:
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Kim, Milo authored
LM3530_ALS_ZONE_REG is read-only register. Writing this register is not necessary. Signed-off-by:
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Kim, Milo authored
* add 'struct lm3530_pwm_data' in the platform data The pwm data is the platform specific functions which generate the pwm. The pwm data is only valid when brightness is pwm input mode. Functions should be implemented by the pwm driver. pwm_set_intensity() : set duty of pwm. pwm_get_intensity() : get current the brightness. * brightness control by pwm If the control mode is pwm, then brightness is changed by the duty of pwm=. So pwm platform function should be called in lm3530_brightness_set(). * do not update brightness register when pwm input mode In pwm input mode, brightness register is not used. If any value is updated in this register, then the led will be off. * when input mode is changed, set duty of pwm to 0 if unnecessary. Signed-off-by:
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Kim, Milo authored
To get members of lm3530_data, use 'struct led_classdev' rather than 'struct i2c_client'. [akpm@linux-foundation.org: fix 80-column fixes more nicely] Signed-off-by:
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Kim, Milo authored
Only 7 bits are used for updating the brightness. (register address : A0h) So the max_brightness property of lm3530 should be set to 127. On initializing registers, maximum initial brightness is limited to 'max_brightness'. Division-by-two is removed on updating the brightness. This arithmetic is not necessary because the range of brightness is 0 ~ 127= . Signed-off-by:
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Mark Brown authored
Direct usage of the asm include has long been deprecated by the introduction of gpiolib. Signed-off-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Peter Meerwald authored
Driver for the PCA9633 I2C chip supporting four LEDs and 255 brightness levels. [akpm@linux-foundation.org: fix kcalloc() call] [axel.lin@gmail.com: fix kcalloc parameters swapped] Signed-off-by:
Peter Meerwald <p.meerwald@bct-electronic.com> Signed-off-by:
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Andrew Morton authored
Saves ~50 bytes text and speeds things up. Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Srinidhi KASAGAR authored
Fix it by assigning the lp5521_read return value. Signed-off-by:
srinidhi kasagar <srinidhi.kasagar@stericsson.com> Cc: Milo(Woogyom) Kim <milo.kim@ti.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Arun MURTHY <arun.murthy@stericsson.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Kim, Milo authored
For better readability, values of LP5521_REG_ENABLE register were redefined= . Additional definitions: LP5521_ENABLE_DEFAULT and LP5521_ENABLE_RUN_PROGRAM= . Use definition rather than hard code value. : 0x3F -> 'LP5521_CMD_DIRECT' Signed-off-by:
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Kim, Milo authored
The lp5521 has autonomous operation mode without external control. Using lp5521_platform_data, various led patterns can be configurable. For supporting this feature, new functions and device attribute are added. Structure of lp5521_led_pattern: 3 channels are supported - red, green and blue. Pattern(s) of each channel and numbers of pattern(s) are defined in the pla= tform data. Pattern data are hexa codes which include pattern commands such like set pwm, wait, ramp up/down, branch and so on. Pattern mode functions: * lp5521_clear_program_memory Before running new led pattern, program memory should be cleared. * lp5521_write_program_memory Pattern data updated in the program memory via the i2c. * lp5521_get_pattern Get pattern from predefined in the platform data. * lp5521_run_led_pattern Stop current pattern or run new pattern. Transition time is required between different operation mode. Device attribute - 'led_pattern': To load specific led pattern, new device attribute is added. When the lp5521 driver is unloaded, stop current led pattern mode. Documentation updated : description about how to define the led patterns and example. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by:
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Kim, Milo authored
The value of CONFIG register(Addr 08h) is configurable. For supporting this feature, update_config is added in the platform data. If 'update_config' is not defined, the default value is 'LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT'. To define CONFIG register in the platform data, the bit definitions were mo= ved to the header file. Documentation updated : description about 'update_config' and example. Signed-off-by:
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Kim, Milo authored
The name of each led channel can be configurable. For the compatibility, the name is set to default value(xx:channelN) when 'name' is not defined. Signed-off-by:
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Wolfram Sang authored
A few new i2c-drivers came into the kernel which clear the clientdata-pointer on exit or error. This is obsolete meanwhile, the core will do it. Signed-off-by:
Wolfram Sang <w.sang@pengutronix.de> Cc: NeilBrown <neilb@suse.de> Cc: Richard Purdie <rpurdie@linux.intel.com> Signed-off-by:
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Dan Carpenter authored
Just a small tidy-up. 1) There is a NULL dereference if the tca allocation fails. 2) The call to cancel_work_sync() isn't needed because we haven't scheduled any work. 3) The call to i2c_set_clientdata() isn't needed because the core handles that automatically if probe() fails. 4) I added some curly braces for style reasons. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: Richard Purdie <rpurdie@rpsys.net> Acked-by:
NeilBrown <neilb@suse.de> Signed-off-by:
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Masanari Iida authored
"reseting" -> "resetting" Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Akinobu Mita authored
Use for_each_clear_bit() to iterate over all the cleared bit in a memory region. Signed-off-by:
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Akinobu Mita authored
Use for_each_clear_bit() to iterate over all the cleared bit in a memory region. Signed-off-by:
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Akinobu Mita authored
Use for_each_clear_bit() to iterate over all the cleared bit in a memory region. Signed-off-by:
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Akinobu Mita authored
Use for_each_clear_bit() to iterate over all the cleared bit in a memory region. Signed-off-by:
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Akinobu Mita authored
Introduce for_each_clear_bit() and for_each_clear_bit_from(). They are similar to for_each_set_bit() and list_for_each_set_bit_from(), but they iterate over all the cleared bits in a memory region. Signed-off-by:
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Akinobu Mita authored
Remove for_each_set_bit_cont() after confirming that no one uses for_each_set_bit_cont() anymore. [sfr@canb.auug.org.au: regmap: cope with bitops API change] Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Cc: Robert Richter <robert.richter@amd.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by:
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Akinobu Mita authored
This renames for_each_set_bit_cont() to for_each_set_bit_from() because it is analogous to list_for_each_entry_from() in list.h rather than list_for_each_entry_continue(). This doesn't remove for_each_set_bit_cont() for now. Signed-off-by:
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Randy Dunlap authored
Fix build error when GPIO_CS5535 is not enabled: drivers/built-in.o: In function `ot200_backlight_probe': ot200_bl.c:(.text+0x205bf): undefined reference to `cs5535_gpio_set' ot200_bl.c:(.text+0x205d1): undefined reference to `cs5535_gpio_set' Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Cc: Christian Gmeiner <christian.gmeiner@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Jingoo Han authored
Instead of using legacy suspend/resume methods, using newer dev_pm_ops structure allows better control over power management. Signed-off-by:
Jingoo Han <jg1.han@samsung.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Grazvydas Ignotas authored
Add support for pandora (openpandora.org) backlight. It might look like all this could be done using pwm_bl.c instead, but there is a need of special programming sequence when turning on the LED driver chip or else it will misbehave. Doing this using pwm_bl.c would require to use some register programming and pwm functions from platform code, and ARM maintainers are allergic to driver-like code in /arch/arm nowadays. The PMIC PWM driver is currently missing too, so pwm_bl.c can't be used anyway. Signed-off-by:
Grazvydas Ignotas <notasas@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Christian Gmeiner authored
Add backlight driver for Bachmann's ot200 visualisation device. The driver uses MFGPT 7 of CS5535 silicon to regulate the backlight. [akpm@linux-foundation.org: remove redundant test of `brightness'] Signed-off-by:
Christian Gmeiner <christian.gmeiner@gmail.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Andres Salomon <dilinger@queued.net> Signed-off-by:
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Kim, Milo authored
THis driver supports TI LP8550/LP8551/LP8552/LP8553/LP8556 backlight devices. The brightness can be controlled by the I2C or PWM input. The lp855x driver provides both modes. For the PWM control, pwm-specific functions can be defined in the platform data. And some information can be read via the sysfs(lp855x device attributes). For details, please refer to Documentation/backlight/lp855x-driver.txt. [axel.lin@gmail.com: add missing mutex_unlock in lp855x_read_byte() error path] [axel.lin@gmail.com: check platform data in lp855x_probe()] [axel.lin@gmail.com: small cleanups] [dan.carpenter@oracle.com: silence a compiler warning] [axel.lin@gmail.com: use id->driver_data to differentiate lp855x chips] [akpm@linux-foundation.org: simplify boolean return expression] Signed-off-by:
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Julia Lawall authored
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Cc: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
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Julia Lawall authored
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by:
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Julia Lawall authored
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by:
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Axel Lin authored
Factor out some boilerplate code for spi driver registration into module_spi_driver. Signed-off-by:
Alberto Panizzo <alberto@amarulasolutions.com> Cc: Donghwa Lee <dh09.lee@samsung.com> Acked-by:
Marek Vasut <marek.vasut@gmail.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: InKi Dae <inki.dae@samsung.com> Cc: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Axel Lin authored
Factor out some boilerplate code for i2c driver registration into module_i2c_driver. Signed-off-by:
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Wanlong Gao authored
The maintainership of LTP is out of date, so update it. Signed-off-by:
Wanlong Gao <gaowanlong@cn.fujitsu.com> Signed-off-by:
Cyril Hrubis <chrubis@suse.cz> Signed-off-by:
Caspar Zhang <caspar@casparzhang.com> Reviewed-by:
Rishikesh K Rajak <rishikesh.rajak@hp.com> Acked-by:
Subrata Modak <tosubrata@gmail.com> Signed-off-by:
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Joe Perches authored
Russell King seems to be maintaining these. Might as well mark them with the appropriate S: entry Signed-off-by:
Joe Perches <joe@perches.com> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by:
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Joe Perches authored
Add missing S: status line to ALPHA. Signed-off-by:
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