Commit Graph

7 Commits

Author SHA1 Message Date
Javier Martinez Canillas 4d59ed8545 leds: Export OF module alias information in missing drivers
The I2C core always reports the MODALIAS uevent as "i2c:<modalias>"
regardless of the mechanism that was used to register the device
(i.e: OF or board code) and the table that is used later to match
the driver with the device (i.e: I2C id table or OF match table).

So drivers needs to export the I2C id table and this be built into
the module or udev won't have the necessary information to autoload
the needed driver module when the device is added.

But this means that OF-only drivers needs to have both OF and I2C id
tables that have to be kept in sync and also the dev node compatible
manufacturer prefix is stripped when reporting the MODALIAS. Which can
lead to issues if two vendors use the same I2C device name for example.

To avoid the above, the I2C core behavior may be changed in the future
to not require an SPI device table for OF-only drivers and report the
OF module alias. So, it's better to also export the OF table even when
is unused now to prevent breaking module loading when the core changes.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:30 +02:00
Krzysztof Kozlowski 44ab901f91 leds: Drop owner assignment from i2c_driver
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
2015-08-28 14:06:02 +02:00
Geert Uytterhoeven a44b0f5edf leds: pca963x: Add missing initialiation of struct led_info.flags
Only the name and default_trigger fields are initialized.
Other fields (currently flags only) contain random stack data.
Pre-initialize the led structure completely to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2015-03-30 11:55:48 -07:00
Peter Meerwald 0c62f42dab leds:pca963x: Always initialize MODE2 register
PCA9632 defaults to open-drain
PCA9633/4/5 defaults to totem-pole

the driver assumed that totem-pole default and didn't actively set
the value; the MODE2 register is now written if platform
data indicating the mode is given

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2014-07-03 11:55:56 -07:00
Peter Meerwald 3dfedb9d54 leds:pca963x: Add support for PCA9635 LED driver chip
supports 16 PWM-controlled LEDs

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2014-07-03 11:52:30 -07:00
Ricardo Ribalda Delgado 8a6acd648c leds-pca963x: Fix device tree parsing
A malformed device tree could lead into a segmentation fault if the reg
value of a led is bigger than the number of leds.

A valid device tree could have only information about the last led of the
chip. Fix the device tree parsing to handle those cases.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2013-08-26 17:22:14 -07:00
Ricardo Ribalda Delgado 56a1740c21 leds-pca9633: Rename to leds-pca963x
The driver now supports the chips pca9633 and pca9634, therefore we
rename the files to more generic and meaningul names

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2013-08-26 17:22:14 -07:00