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[v4,5/6] drm: Add definition for eDP backlight frequency

Message ID 20170322225443.79343-6-puthik@chromium.org (mailing list archive)
State New, archived
Headers show

Commit Message

Puthikorn Voravootivat March 22, 2017, 10:54 p.m. UTC 
This patch adds the following definition
- Bit mask for EDP_PWMGEN_BIT_COUNT and min/max cap
  register which only use bit 0:4
- Base frequency (27 MHz) for backlight PWM frequency
  generator.

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
---
 include/drm/drm_dp_helper.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index ba89295c8651..8fba8c6e6231 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -572,10 +572,12 @@ 
 #define DP_EDP_PWMGEN_BIT_COUNT             0x724
 #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN     0x725
 #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX     0x726
+# define  DP_EDP_PWMGEN_BIT_COUNT_MASK      (31 << 0)
 
 #define DP_EDP_BACKLIGHT_CONTROL_STATUS     0x727
 
 #define DP_EDP_BACKLIGHT_FREQ_SET           0x728
+# define DP_EDP_BACKLIGHT_FREQ_BASE         27000000
 
 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB   0x72a
 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID   0x72b