[PATCH v9 4/5] drm: Add definition for eDP backlight frequency

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.

Signed-off-by: Puthikorn Voravootivat <puthik@xxxxxxxxxxxx>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
---
 include/drm/drm_dp_helper.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index c0bd0d7651a9..eaa307f6ae8c 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      (0x1f << 0)
 
 #define DP_EDP_BACKLIGHT_CONTROL_STATUS     0x727
 
 #define DP_EDP_BACKLIGHT_FREQ_SET           0x728
+# define DP_EDP_BACKLIGHT_FREQ_BASE_KHZ     27000
 
 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB   0x72a
 #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID   0x72b
-- 
2.13.0.219.gdb65acc882-goog

_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux