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rk3368: pwm: add pwm interface for cabc

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Signed-off-by: David Wu <wdc@rock-chips.com>
This commit is contained in:
David Wu
2015-03-24 19:11:00 +08:00
committed by hjc
parent 4d7a30ed54
commit a17bd5024b
1 changed files with 36 additions and 4 deletions
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40
drivers/pwm/pwm-rockchip.c
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@@ -114,6 +114,34 @@ module_param_named(dbg_level, pwm_dbg_level, int, 0644);
};
extern int rk3368_lcdc_update_pwm(int bl_pwm_period, int bl_pwm_duty);
extern int rk3368_lcdc_cabc_status(void);
static inline void rk_pwm_writel(struct rk_pwm_chip *chip,
unsigned int num, unsigned long offset,
unsigned long val);
static inline u32 rk_pwm_readl(struct rk_pwm_chip *chip, unsigned int num,
unsigned long offset);
static struct rk_pwm_chip* s_rk_pwm_chip = NULL;
static struct rk_pwm_chip* rk_pwm_get_chip(void)
{
BUG_ON(!s_rk_pwm_chip);
return s_rk_pwm_chip;
}
void rk_pwm_set(int bl_pwm_period, int bl_pwm_duty)
{
struct rk_pwm_chip* pc = rk_pwm_get_chip();
rk_pwm_writel(pc, pc->chip.pwms->hwpwm, PWM_REG_DUTY, bl_pwm_duty);
rk_pwm_writel(pc, pc->chip.pwms->hwpwm, PWM_REG_PERIOD, bl_pwm_period);
}
void rk_pwm_get(int* bl_pwm_period, int* bl_pwm_duty)
{
struct rk_pwm_chip* pc = rk_pwm_get_chip();
*bl_pwm_duty = rk_pwm_readl(pc, pc->chip.pwms->hwpwm, PWM_REG_DUTY);
*bl_pwm_period = rk_pwm_readl(pc, pc->chip.pwms->hwpwm, PWM_REG_PERIOD);
}
static inline struct rk_pwm_chip *to_rk_pwm_chip(struct pwm_chip *chip)
{
return container_of(chip, struct rk_pwm_chip, chip);
@@ -238,6 +266,7 @@ static void rk_pwm_resume_v1(struct pwm_chip *chip, struct pwm_device *pwm)
dsb(sy);
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_CTRL,pc->pwm_ctrl);
}
/* config for rockchip,pwm*/
static int rk_pwm_config_v2(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns)
@@ -303,8 +332,12 @@ static int rk_pwm_config_v2(struct pwm_chip *chip, struct pwm_device *pwm,
barrier();
//rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_CTRL,off);
//dsb(sy);
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_DUTY,dc);//0x1900);// dc);
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_PERIOD,pv);//0x5dc0);//pv);
if (!rk3368_lcdc_cabc_status()) {
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_DUTY,dc);//0x1900);// dc);
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_PERIOD,pv);//0x5dc0);//pv);
} else {
rk3368_lcdc_update_pwm(pv,dc);
}
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_CNTR,0);
dsb(sy);
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_CTRL,on|conf);
@@ -325,8 +358,6 @@ static void rk_pwm_set_enable_v2(struct pwm_chip *chip, struct pwm_device *pwm,b
val &= ~RK_PWM_ENABLE;
rk_pwm_writel(pc, pwm->hwpwm, PWM_REG_CTRL, val);
DBG("%s %d \n", __FUNCTION__, rk_pwm_readl(pc, pwm->hwpwm, PWM_REG_CTRL));
}
static void rk_pwm_suspend_v2(struct pwm_chip *chip, struct pwm_device *pwm)
@@ -601,6 +632,7 @@ static int rk_pwm_probe(struct platform_device *pdev)
return -ENOMEM;
}
s_rk_pwm_chip = pc;
pc->base = of_iomap(np, 0);
if (IS_ERR(pc->base)) {
printk("PWM base ERR \n");