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pwm: Add Renesas TPU PWM driver

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The Timer Pulse Unit (TPU) is a 4-channels 16-bit timer used to generate
waveforms. This driver exposes PWM functions through the PWM API for
other drivers to use.

The code is loosely based on the leds-renesas-tpu driver by Magnus Damm
and the TPU PWM driver shipped in the Armadillo EVA 800 kernel sources.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Laurent Pinchart 2013-06-13 18:54:44 +02:00 • committed by Thierry Reding
commit 99b82abb0a
4 changed files with 502 additions and 0 deletions
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include/linux/platform_data/pwm-renesas-tpu.h Normal file
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#ifndef __PWM_RENESAS_TPU_H__
#define __PWM_RENESAS_TPU_H__
#include <linux/pwm.h>
#define TPU_CHANNEL_MAX 4
struct tpu_pwm_channel_data {
enum pwm_polarity polarity;
};
struct tpu_pwm_platform_data {
struct tpu_pwm_channel_data channels[TPU_CHANNEL_MAX];
};
#endif /* __PWM_RENESAS_TPU_H__ */