drm/i915: Backlight control using CRC PMIC based PWM driver
Use the CRC PWM device in intel_panel.c and add new MIPI backlight specififc callbacks v2: Modify to use pwm_config callback v3: Addressed Jani's comments - Renamed all function as pwm_* instead of vlv_* - Call intel_panel_actually_set_backlight in enable function - Return -ENODEV in case pwm_get fails - in case pwm_config error return error cdoe from pwm_config - Cleanup pwm in intel_panel_destroy_backlight v4: Removed unused #defines and initialized backlight with INVALID_PIPE (Ville) CC: Samuel Ortiz <sameo@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Thierry Reding <thierry.reding@gmail.com> Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com> Tested-by: NVille Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: NShobhit Kumar <shobhit.kumar@intel.com> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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