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dragonheart_kernel_oneplus_sm8150
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drivers/pwm: Import OnePlus Changes 

Signed-off-by: Cyber Knight <cyberknight755@gmail.com>
This commit is contained in:
Cyber Knight 2021-09-26 01:49:50 +08:00
parent fc9dbcc3c5
commit 63269dedbb
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GPG Key ID: 23BD4CCD326E9D64
2 changed files with 5 additions and 11 deletions
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9
drivers/pwm/pwm-bcm-iproc.c
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@ -85,6 +85,8 @@ static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
u64 tmp, multi, rate;
u32 value, prescale;
rate = clk_get_rate(ip->clk);
value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
if (value & BIT(IPROC_PWM_CTRL_EN_SHIFT(pwm->hwpwm)))
@ -97,13 +99,6 @@ static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
else
state->polarity = PWM_POLARITY_INVERSED;
rate = clk_get_rate(ip->clk);
if (rate == 0) {
state->period = 0;
state->duty_cycle = 0;
return;
}
value = readl(ip->base + IPROC_PWM_PRESCALE_OFFSET);
prescale = value >> IPROC_PWM_PRESCALE_SHIFT(pwm->hwpwm);
prescale &= IPROC_PWM_PRESCALE_MAX;

7
drivers/pwm/pwm-lpss.c
View File

@ -105,12 +105,10 @@ static void pwm_lpss_prepare(struct pwm_lpss_chip *lpwm, struct pwm_device *pwm,
* The equation is:
* base_unit = round(base_unit_range * freq / c)
*/
base_unit_range = BIT(lpwm->info->base_unit_bits);
base_unit_range = BIT(lpwm->info->base_unit_bits) - 1;
freq *= base_unit_range;
base_unit = DIV_ROUND_CLOSEST_ULL(freq, c);
/* base_unit must not be 0 and we also want to avoid overflowing it */
base_unit = clamp_val(base_unit, 1, base_unit_range - 1);
on_time_div = 255ULL * duty_ns;
do_div(on_time_div, period_ns);
@ -118,7 +116,8 @@ static void pwm_lpss_prepare(struct pwm_lpss_chip *lpwm, struct pwm_device *pwm,
orig_ctrl = ctrl = pwm_lpss_read(pwm);
ctrl &= ~PWM_ON_TIME_DIV_MASK;
ctrl &= ~((base_unit_range - 1) << PWM_BASE_UNIT_SHIFT);
ctrl &= ~(base_unit_range << PWM_BASE_UNIT_SHIFT);
base_unit &= base_unit_range;
ctrl |= (u32) base_unit << PWM_BASE_UNIT_SHIFT;
ctrl |= on_time_div;