drm/amd/display: Fix Silence warnings

Also affects: freesync, hdcp, info_packet, power

[Why] Resolve compiler warnings by marking unused parameters explicitly.

[How] In .c/.h keep parameter names in signatures and add a line with
      `(void)param;`  inside the function body

Preserved function signatures and avoids breaking code paths that
may reference the parameter under conditional compilation.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index 2639163b8ba2..1f225d0d6c44 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -896,6 +896,7 @@ static void build_de_pq(struct pwl_float_data_ex *de_pq,
 		uint32_t hw_points_num,
 		const struct hw_x_point *coordinate_x)
 {
+	(void)coordinate_x;
 	uint32_t i;
 	struct fixed31_32 output;
 	struct fixed31_32 *de_pq_table = mod_color_get_table(type_de_pq_table);
@@ -1339,6 +1340,7 @@ static void scale_gamma_dx(struct pwl_float_data *pwl_rgb,
 		const struct dc_gamma *ramp,
 		struct dividers dividers)
 {
+	(void)dividers;
 	uint32_t i;
 	struct fixed31_32 min = dc_fixpt_zero;
 	struct fixed31_32 max = dc_fixpt_one;
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index 19de72173052..c9150019aab0 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -114,6 +114,7 @@ static unsigned int calc_duration_in_us_from_v_total(
 		const struct mod_vrr_params *in_vrr,
 		unsigned int v_total)
 {
+	(void)in_vrr;
 	unsigned int duration_in_us =
 			(unsigned int)(div64_u64(((unsigned long long)(v_total)
 				* 10000) * stream->timing.h_total,
@@ -218,6 +219,7 @@ static void update_v_total_for_static_ramp(
 		const struct dc_stream_state *stream,
 		struct mod_vrr_params *in_out_vrr)
 {
+	(void)core_freesync;
 	unsigned int v_total = 0;
 	unsigned int current_duration_in_us =
 			calc_duration_in_us_from_v_total(
@@ -292,6 +294,7 @@ static void apply_below_the_range(struct core_freesync *core_freesync,
 		unsigned int last_render_time_in_us,
 		struct mod_vrr_params *in_out_vrr)
 {
+	(void)core_freesync;
 	unsigned int inserted_frame_duration_in_us = 0;
 	unsigned int mid_point_frames_ceil = 0;
 	unsigned int mid_point_frames_floor = 0;
@@ -447,6 +450,7 @@ static void apply_fixed_refresh(struct core_freesync *core_freesync,
 		unsigned int last_render_time_in_us,
 		struct mod_vrr_params *in_out_vrr)
 {
+	(void)core_freesync;
 	bool update = false;
 	unsigned int max_render_time_in_us = in_out_vrr->max_duration_in_us;
 
@@ -545,6 +549,7 @@ static bool vrr_settings_require_update(struct core_freesync *core_freesync,
 		unsigned int max_refresh_in_uhz,
 		struct mod_vrr_params *in_vrr)
 {
+	(void)core_freesync;
 	if (in_vrr->state != in_config->state) {
 		return true;
 	} else if (in_vrr->state == VRR_STATE_ACTIVE_FIXED &&
@@ -946,6 +951,7 @@ void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
 		struct dc_info_packet *infopacket,
 		bool pack_sdp_v1_3)
 {
+	(void)mod_freesync;
 	/* SPD info packet for FreeSync
 	 * VTEM info packet for HdmiVRR
 	 * Check if Freesync is supported. Return if false. If true,
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
index 26a351a184f3..d07387a961dd 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
@@ -501,6 +501,7 @@ static inline void callback_in_ms(uint16_t time, struct mod_hdcp_output *output)
 static inline void set_watchdog_in_ms(struct mod_hdcp *hdcp, uint16_t time,
 		struct mod_hdcp_output *output)
 {
+	(void)hdcp;
 	output->watchdog_timer_needed = 1;
 	output->watchdog_timer_delay = time;
 }