[Intel-gfx] [PATCH v3 5/6] drm: Add definition for eDP backlight frequency
Puthikorn Voravootivat
puthik at chromium.org
Wed Mar 15 23:41:10 UTC 2017
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 at chromium.org>
---
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 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
--
2.12.0.367.g23dc2f6d3c-goog
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