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imx233: rewrite pwm using new registers

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Change-Id: Ie222f0b25f4b8af9ccf21aecd82a7f4eba40aa3c
This commit is contained in:
Amaury Pouly 2013-06-16 17:19:20 +02:00
parent 7c5b65b9d2
commit 3e8c2dc46d
4 changed files with 18 additions and 43 deletions
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14
firmware/target/arm/imx233/pwm-imx233.c
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@ -30,15 +30,15 @@ void imx233_pwm_init(void)
bool imx233_pwm_is_channel_enable(int channel)
{
return HW_PWM_CTRL & HW_PWM_CTRL__PWMx_ENABLE(channel);
return BF_RD(PWM_CTRL, PWMx_ENABLE(channel));
}
void imx233_pwm_enable_channel(int channel, bool enable)
{
if(enable)
__REG_SET(HW_PWM_CTRL) = HW_PWM_CTRL__PWMx_ENABLE(channel);
BF_SET(PWM_CTRL, PWMx_ENABLE(channel));
else
__REG_CLR(HW_PWM_CTRL) = HW_PWM_CTRL__PWMx_ENABLE(channel);
BF_CLR(PWM_CTRL, PWMx_ENABLE(channel));
}
void imx233_pwm_setup_channel(int channel, int period, int cdiv, int active,
@ -56,11 +56,9 @@ void imx233_pwm_setup_channel(int channel, int period, int cdiv, int active,
imx233_set_pin_drive_strength(IMX233_PWM_PIN_BANK(channel), IMX233_PWM_PIN(channel),
PINCTRL_DRIVE_4mA);
/* watch the order ! active THEN period */
HW_PWM_ACTIVEx(channel) = active << HW_PWM_ACTIVEx__ACTIVE_BP |
inactive << HW_PWM_ACTIVEx__INACTIVE_BP;
HW_PWM_PERIODx(channel) = period | active_state << HW_PWM_PERIODx__ACTIVE_STATE_BP |
inactive_state << HW_PWM_PERIODx__INACTIVE_STATE_BP |
cdiv << HW_PWM_PERIODx__CDIV_BP;
HW_PWM_ACTIVEn(channel) = BF_OR2(PWM_ACTIVEn, ACTIVE(active), INACTIVE(inactive));
HW_PWM_PERIODn(channel) = BF_OR4(PWM_PERIODn, PERIOD(period - 1),
ACTIVE_STATE(active_state), INACTIVE_STATE(inactive_state), CDIV(cdiv));
/* restore */
imx233_pwm_enable_channel(channel, enable);
}