> Right. TLC591xx has the constant output mode which should be used for
> GPIO. Perhaps that mode could be always used when the brightness is
> turned to maximum. I haven't read the spec carefully enough to know if
> there are some downsides.
The original Belkin code did use that mode for full bri
On 20/01/15 15:26, Andrew Lunn wrote:
>> I'm not familiar with the LED/PWM frameworks, so I want to summarize our
>> use case and how I guess this should be done:
>>
>> We use the TLC59108 to provide backlight to a LCD, but in addition to
>> that, it is used as a GPIO expander (or GPO, as it cannot
On Tue, Jan 20, 2015 at 2:26 PM, Andrew Lunn wrote:
> led-gpio looks like more work, but i don't see why it should not be
> possible. One thing i do need to check is that if the brightness is
> set to 255 the output is not set to 255/256 on and you have a regular
is set to 255/256?
> glitch. For
> I'm not familiar with the LED/PWM frameworks, so I want to summarize our
> use case and how I guess this should be done:
>
> We use the TLC59108 to provide backlight to a LCD, but in addition to
> that, it is used as a GPIO expander (or GPO, as it cannot do input). In
> your earlier patch versio
On 16/01/15 21:17, Andrew Lunn wrote:
> On Fri, Jan 16, 2015 at 04:52:12PM +0200, Tomi Valkeinen wrote:
>> Hi,
>>
>> On 15/01/15 01:15, Andrew Lunn wrote:
>>> This patchset is a driver for the TI tlc59116 16 Channel i2c LED
>>> driver. This driver is used on the Belkin WRT1900AC access point and
>>
On Fri, Jan 16, 2015 at 04:52:12PM +0200, Tomi Valkeinen wrote:
> Hi,
>
> On 15/01/15 01:15, Andrew Lunn wrote:
> > This patchset is a driver for the TI tlc59116 16 Channel i2c LED
> > driver. This driver is used on the Belkin WRT1900AC access point and
> > the C code is derived from code Belkin c
> I understand that period of TLC chip cannot be changed and hence cannot
> fully implement PWM interface.
O.K, so that is agreed.
> But, suppose I want to control brightness
> of an LCD screen, with your current design, my LCD driver can never can do
> something like:
> pwm_get(chip);
>
On 1/16/2015 9:25 PM, Andrew Lunn wrote:
> On Fri, Jan 16, 2015 at 04:52:12PM +0200, Tomi Valkeinen wrote:
>> Hi,
>>
>> On 15/01/15 01:15, Andrew Lunn wrote:
>>> This patchset is a driver for the TI tlc59116 16 Channel i2c LED
>>> driver. This driver is used on the Belkin WRT1900AC access point a
On Fri, Jan 16, 2015 at 04:52:12PM +0200, Tomi Valkeinen wrote:
> Hi,
>
> On 15/01/15 01:15, Andrew Lunn wrote:
> > This patchset is a driver for the TI tlc59116 16 Channel i2c LED
> > driver. This driver is used on the Belkin WRT1900AC access point and
> > the C code is derived from code Belkin c
Hi,
On 15/01/15 01:15, Andrew Lunn wrote:
> This patchset is a driver for the TI tlc59116 16 Channel i2c LED
> driver. This driver is used on the Belkin WRT1900AC access point and
> the C code is derived from code Belkin contributed to OpenWRT.
> However it has been extensively re-written, and a d
This patchset is a driver for the TI tlc59116 16 Channel i2c LED
driver. This driver is used on the Belkin WRT1900AC access point and
the C code is derived from code Belkin contributed to OpenWRT.
However it has been extensively re-written, and a device tree binding
added to replace platform data.
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