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4 Commits

Author SHA1 Message Date
Stefan Wahren
6ef7d1c46f pwm: bcm2835: Fix email address specification 
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
 2015-12-16 16:45:32 +01:00
Stefan Wahren
fd13c14426 pwm: bcm2835: Prevent division by zero 
It's possible that the PWM clock becomes an orphan. So better check the
result of clk_get_rate() in order to prevent a division by zero.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
 2015-12-16 16:45:10 +01:00
Stefan Wahren
ebe88b6ae4 pwm: bcm2835: Calculate scaler in ->config() 
Currently pwm-bcm2835 assumes a fixed clock rate and stores the
resulting scaler in the driver structure. But with the upcoming
PWM clock support for clk-bcm2835 the rate could change, so
calculate the scaler in the ->config() callback.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
 2015-12-16 16:44:36 +01:00
Bart Tanghe
e5a06dc5ac pwm: Add BCM2835 PWM driver 
Add PWM driver for Broadcom BCM2835 processor (Raspberry Pi)

Signed-off-by: Bart Tanghe <bart.tanghe@thomasmore.be>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
 2014-11-17 12:20:13 +01:00