[PATCH v2 1/5] drm/i915/display: Make intel_dp_aux_fw_sync_len available for PSR code

[Jouni Högander]

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. u8 is enough for fw sync pulse length.

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_aux.c | 6 +++---
 drivers/gpu/drm/i915/display/intel_dp_aux.h | 1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c
index 4f4a0e3b3114..7a5cfd77d43b 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c
@@ -143,10 +143,10 @@ static int intel_dp_aux_sync_len(void)
 	return precharge + preamble;
 }
 
-static int intel_dp_aux_fw_sync_len(void)
+u8 intel_dp_aux_fw_sync_len(void)
 {
-	int precharge = 10; /* 10-16 */
-	int preamble = 8;
+	u8 precharge = 10; /* 10-16 */
+	u8 preamble = 8;
 
 	return precharge + preamble;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.h b/drivers/gpu/drm/i915/display/intel_dp_aux.h
index 8447f3e601fe..8e6a62abf01a 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);
+u8 intel_dp_aux_fw_sync_len(void);
 
 #endif /* __INTEL_DP_AUX_H__ */
-- 
2.34.1