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[SRU,Noble,5/8] drm/i915/display: Make intel_dp_aux_fw_sync_len available for PSR code

Message ID 20240416060416.18571-6-hui.wang@canonical.com
State New
Headers show
Series Fix panel flickering issue when i915.psr2 is enabled | expand

Commit Message

Hui Wang April 16, 2024, 6:04 a.m. UTC 
From: Jouni Högander <jouni.hogander@intel.com>

BugLink: https://bugs.launchpad.net/bugs/2046315

ALPM AUX-Wake fast wake sync pulse count is needed by PSR to calculate IO
wake and fast wake lines. Convert intel_dp_aux_fw_sync_len as non-static
to make it available for PSR code.

v2: use int instead of u8

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240313133221.868391-2-jouni.hogander@intel.com
(cherry picked from commit 8453c12aa29f0a1fa106df4e9fd618f9235e1123 linux-next)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
---
 drivers/gpu/drm/i915/display/intel_dp_aux.c | 2 +-
 drivers/gpu/drm/i915/display/intel_dp_aux.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c
index 2e2af71bcd5a..375a94b3d455 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c
@@ -142,7 +142,7 @@  static int intel_dp_aux_sync_len(void)
 	return precharge + preamble;
 }
 
-static int intel_dp_aux_fw_sync_len(void)
+int intel_dp_aux_fw_sync_len(void)
 {
 	int precharge = 10; /* 10-16 */
 	int preamble = 8;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.h b/drivers/gpu/drm/i915/display/intel_dp_aux.h
index 8447f3e601fe..76d1f2ed7c2f 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux.h
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux.h
@@ -20,5 +20,6 @@  enum aux_ch intel_dp_aux_ch(struct intel_encoder *encoder);
 
 void intel_dp_aux_irq_handler(struct drm_i915_private *i915);
 u32 intel_dp_aux_pack(const u8 *src, int src_bytes);
+int intel_dp_aux_fw_sync_len(void);
 
 #endif /* __INTEL_DP_AUX_H__ */