[Intel-gfx] [PATCH v2] drm/i915 : Restore PWM_GRANULARITY after resume

[Jani Nikula]

On Mon, 19 Sep 2016, "Lee, Shawn C" <shawn.c.lee at intel.com> wrote:
> +	if (HAS_PCH_LPT(dev_priv)) {
> +		mul = I915_READ(SOUTH_CHICKEN2);
> +		mul &= ~LPT_PWM_GRANULARITY;
> +		I915_WRITE(SOUTH_CHICKEN2, mul | (panel->backlight.pwm_alternate_increment << LPT_PWM_GRANULARITY));
> +	} else {
> +		mul = I915_READ(SOUTH_CHICKEN1);
> +		mul &= ~SPT_PWM_GRANULARITY;
> +		I915_WRITE(SOUTH_CHICKEN1, mul | (panel->backlight.pwm_alternate_increment << SPT_PWM_GRANULARITY));
> +	}

Also, both of the shifts are wrong here. The *_PWM_GRANULARITY macros
already contain the shifts.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center