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| author | Boris BREZILLON <linux-arm@overkiz.com> | 2013-01-08 16:36:42 +0100 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@avionic-design.de> | 2013-01-08 16:52:10 +0100 |
| commit | 9421bade0765d8ffb86b8a99213b611278a3542a (patch) | |
| tree | 83bacefbd5536255dae0fba58bff5bdacdf2b6b8 /drivers/pwm/Kconfig | |
| parent | d1c3ed669a2d452cacfb48c2d171a1f364dae2ed (diff) | |
| download | lwn-9421bade0765d8ffb86b8a99213b611278a3542a.tar.gz lwn-9421bade0765d8ffb86b8a99213b611278a3542a.zip | |
pwm: atmel: add Timer Counter Block PWM driver
This patch adds a PWM driver based on Atmel Timer Counter Block. The
Timer Counter Block is used in Waveform generator mode.
A Timer Counter Block provides up to 6 PWM devices grouped by 2:
* group 0 = PWM 0 and 1
* group 1 = PWM 2 and 3
* group 2 = PMW 4 and 5
PWM devices in a given group must be configured with the same period
value. If a PWM device in a group tries to change the period value and
the other device is already configured with a different value an error
will be returned.
This driver requires device tree support. The Timer Counter Block number
used to create a PWM chip is given by the tc-block field in an
"atmel,tcb-pwm" compatible node.
This patch was tested on kizbox board (at91sam9g20 SoC) with pwm-leds.
Signed-off-by: Boris BREZILLON <linux-arm@overkiz.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'drivers/pwm/Kconfig')
| -rw-r--r-- | drivers/pwm/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index e513cd998170..10b6afc94bc3 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -37,6 +37,18 @@ config PWM_AB8500 To compile this driver as a module, choose M here: the module will be called pwm-ab8500. +config PWM_ATMEL_TCB + tristate "TC Block PWM" + depends on ATMEL_TCLIB && OF + help + Generic PWM framework driver for Atmel Timer Counter Block. + + A Timer Counter Block provides 6 PWM devices grouped by 2. + Devices in a given group must have the same period. + + To compile this driver as a module, choose M here: the module + will be called pwm-atmel-tcb. + config PWM_BFIN tristate "Blackfin PWM support" depends on BFIN_GPTIMERS |