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SubjectRe: [PATCH v9 01/11] drm/i915: Use 64-bit division macro
Date
On Tue, 17 Mar 2020, Guru Das Srinagesh <gurus@codeaurora.org> wrote:
> Since the PWM framework is switching struct pwm_state.duty_cycle's
> datatype to u64, prepare for this transition by using DIV_ROUND_UP_ULL
> to handle a 64-bit dividend.
>
> Cc: Jani Nikula <jani.nikula@linux.intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
> Cc: intel-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>
> Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>

Reviewed-by: Jani Nikula <jani.nikula@intel.com>

Also ack for merging this via whichever tree you prefer; please let me
know if you want me to take this via drm-intel.

> ---
> drivers/gpu/drm/i915/display/intel_panel.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
> index bc14e9c..843cac1 100644
> --- a/drivers/gpu/drm/i915/display/intel_panel.c
> +++ b/drivers/gpu/drm/i915/display/intel_panel.c
> @@ -1868,7 +1868,7 @@ static int pwm_setup_backlight(struct intel_connector *connector,
>
> panel->backlight.min = 0; /* 0% */
> panel->backlight.max = 100; /* 100% */
> - panel->backlight.level = DIV_ROUND_UP(
> + panel->backlight.level = DIV_ROUND_UP_ULL(
> pwm_get_duty_cycle(panel->backlight.pwm) * 100,
> CRC_PMIC_PWM_PERIOD_NS);
> panel->backlight.enabled = panel->backlight.level != 0;

--
Jani Nikula, Intel Open Source Graphics Center

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