From: mcuelenaere@gmail.com (Maurus Cuelenaere)
To: linux-arm-kernel@lists.infradead.org
Subject: S3C64xx backlight PWM misinited GPIO pin
Date: Thu, 24 Sep 2009 17:23:26 +0200 [thread overview]
Message-ID: <4ABB8EEE.7070103@gmail.com> (raw)
Hi,
Are the GPIO pins used as PWM (e.g. GPF15) supposed to be set to special
function 2 in the bootloader/mach file or is this just a bug in the PWM
driver
in current mainline?
Without doing the below, backlight PWM doesn't work for me:
static int smartq_bl_init(struct device *dev)
{
s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
return 0;
}
static struct platform_pwm_backlight_data smartq_backlight_data = {
...
.init = smartq_bl_init,
...
};
which doesn't look like it's the way to go..
Do I need to set some kind of config option (mach-hmt doesn't seem to
need the
above change) or .. ?
Regards,
Maurus Cuelenaere
next reply other threads:[~2009-09-24 15:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-24 15:23 Maurus Cuelenaere [this message]
2009-09-28 7:43 ` S3C64xx backlight PWM misinited GPIO pin Peter Korsgaard
2009-09-28 17:31 ` Maurus Cuelenaere
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