drm/amdgpu: remove unused display_vblank_wait interface

No longer used since we changed the MC programming sequence.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1804,7 +1804,6 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
 #define amdgpu_ih_decode_iv(adev, iv) (adev)->irq.ih_funcs->decode_iv((adev), (iv))
 #define amdgpu_ih_set_rptr(adev) (adev)->irq.ih_funcs->set_rptr((adev))
 #define amdgpu_display_vblank_get_counter(adev, crtc) (adev)->mode_info.funcs->vblank_get_counter((adev), (crtc))
-#define amdgpu_display_vblank_wait(adev, crtc) (adev)->mode_info.funcs->vblank_wait((adev), (crtc))
 #define amdgpu_display_backlight_set_level(adev, e, l) (adev)->mode_info.funcs->backlight_set_level((e), (l))
 #define amdgpu_display_backlight_get_level(adev, e) (adev)->mode_info.funcs->backlight_get_level((e))
 #define amdgpu_display_hpd_sense(adev, h) (adev)->mode_info.funcs->hpd_sense((adev), (h))

drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h

@@ -267,8 +267,6 @@ struct amdgpu_display_funcs {
 	void (*bandwidth_update)(struct amdgpu_device *adev);
 	/* get frame count */
 	u32 (*vblank_get_counter)(struct amdgpu_device *adev, int crtc);
-	/* wait for vblank */
-	void (*vblank_wait)(struct amdgpu_device *adev, int crtc);
 	/* set backlight level */
 	void (*backlight_set_level)(struct amdgpu_encoder *amdgpu_encoder,
 				    u8 level);

drivers/gpu/drm/amd/amdgpu/dce_v10_0.c

@@ -190,66 +190,6 @@ static void dce_v10_0_audio_endpt_wreg(struct amdgpu_device *adev,
 	spin_unlock_irqrestore(&adev->audio_endpt_idx_lock, flags);
 }
 
-static bool dce_v10_0_is_in_vblank(struct amdgpu_device *adev, int crtc)
-{
-	if (RREG32(mmCRTC_STATUS + crtc_offsets[crtc]) &
-	    CRTC_STATUS__CRTC_V_BLANK_MASK)
-		return true;
-	else
-		return false;
-}
-
-static bool dce_v10_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
-{
-	u32 pos1, pos2;
-
-	pos1 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-	pos2 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-
-	if (pos1 != pos2)
-		return true;
-	else
-		return false;
-}
-
-/**
- * dce_v10_0_vblank_wait - vblank wait asic callback.
- *
- * @adev: amdgpu_device pointer
- * @crtc: crtc to wait for vblank on
- *
- * Wait for vblank on the requested crtc (evergreen+).
- */
-static void dce_v10_0_vblank_wait(struct amdgpu_device *adev, int crtc)
-{
-	unsigned i = 100;
-
-	if (crtc >= adev->mode_info.num_crtc)
-		return;
-
-	if (!(RREG32(mmCRTC_CONTROL + crtc_offsets[crtc]) & CRTC_CONTROL__CRTC_MASTER_EN_MASK))
-		return;
-
-	/* depending on when we hit vblank, we may be close to active; if so,
-	 * wait for another frame.
-	 */
-	while (dce_v10_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v10_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-
-	while (!dce_v10_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v10_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-}
-
 static u32 dce_v10_0_vblank_get_counter(struct amdgpu_device *adev, int crtc)
 {
 	if (crtc >= adev->mode_info.num_crtc)
@@ -3602,7 +3542,6 @@ static void dce_v10_0_encoder_add(struct amdgpu_device *adev,
 static const struct amdgpu_display_funcs dce_v10_0_display_funcs = {
 	.bandwidth_update = &dce_v10_0_bandwidth_update,
 	.vblank_get_counter = &dce_v10_0_vblank_get_counter,
-	.vblank_wait = &dce_v10_0_vblank_wait,
 	.backlight_set_level = &amdgpu_atombios_encoder_set_backlight_level,
 	.backlight_get_level = &amdgpu_atombios_encoder_get_backlight_level,
 	.hpd_sense = &dce_v10_0_hpd_sense,

drivers/gpu/drm/amd/amdgpu/dce_v11_0.c

@@ -207,66 +207,6 @@ static void dce_v11_0_audio_endpt_wreg(struct amdgpu_device *adev,
 	spin_unlock_irqrestore(&adev->audio_endpt_idx_lock, flags);
 }
 
-static bool dce_v11_0_is_in_vblank(struct amdgpu_device *adev, int crtc)
-{
-	if (RREG32(mmCRTC_STATUS + crtc_offsets[crtc]) &
-	    CRTC_STATUS__CRTC_V_BLANK_MASK)
-		return true;
-	else
-		return false;
-}
-
-static bool dce_v11_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
-{
-	u32 pos1, pos2;
-
-	pos1 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-	pos2 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-
-	if (pos1 != pos2)
-		return true;
-	else
-		return false;
-}
-
-/**
- * dce_v11_0_vblank_wait - vblank wait asic callback.
- *
- * @adev: amdgpu_device pointer
- * @crtc: crtc to wait for vblank on
- *
- * Wait for vblank on the requested crtc (evergreen+).
- */
-static void dce_v11_0_vblank_wait(struct amdgpu_device *adev, int crtc)
-{
-	unsigned i = 100;
-
-	if (crtc < 0 || crtc >= adev->mode_info.num_crtc)
-		return;
-
-	if (!(RREG32(mmCRTC_CONTROL + crtc_offsets[crtc]) & CRTC_CONTROL__CRTC_MASTER_EN_MASK))
-		return;
-
-	/* depending on when we hit vblank, we may be close to active; if so,
-	 * wait for another frame.
-	 */
-	while (dce_v11_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v11_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-
-	while (!dce_v11_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v11_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-}
-
 static u32 dce_v11_0_vblank_get_counter(struct amdgpu_device *adev, int crtc)
 {
 	if (crtc < 0 || crtc >= adev->mode_info.num_crtc)
@@ -3727,7 +3667,6 @@ static void dce_v11_0_encoder_add(struct amdgpu_device *adev,
 static const struct amdgpu_display_funcs dce_v11_0_display_funcs = {
 	.bandwidth_update = &dce_v11_0_bandwidth_update,
 	.vblank_get_counter = &dce_v11_0_vblank_get_counter,
-	.vblank_wait = &dce_v11_0_vblank_wait,
 	.backlight_set_level = &amdgpu_atombios_encoder_set_backlight_level,
 	.backlight_get_level = &amdgpu_atombios_encoder_get_backlight_level,
 	.hpd_sense = &dce_v11_0_hpd_sense,

drivers/gpu/drm/amd/amdgpu/dce_v6_0.c

@@ -142,64 +142,6 @@ static void dce_v6_0_audio_endpt_wreg(struct amdgpu_device *adev,
 	spin_unlock_irqrestore(&adev->audio_endpt_idx_lock, flags);
 }
 
-static bool dce_v6_0_is_in_vblank(struct amdgpu_device *adev, int crtc)
-{
-	if (RREG32(mmCRTC_STATUS + crtc_offsets[crtc]) & CRTC_STATUS__CRTC_V_BLANK_MASK)
-		return true;
-	else
-		return false;
-}
-
-static bool dce_v6_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
-{
-	u32 pos1, pos2;
-
-	pos1 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-	pos2 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-
-	if (pos1 != pos2)
-		return true;
-	else
-		return false;
-}
-
-/**
- * dce_v6_0_wait_for_vblank - vblank wait asic callback.
- *
- * @crtc: crtc to wait for vblank on
- *
- * Wait for vblank on the requested crtc (evergreen+).
- */
-static void dce_v6_0_vblank_wait(struct amdgpu_device *adev, int crtc)
-{
-	unsigned i = 100;
-
-	if (crtc >= adev->mode_info.num_crtc)
-		return;
-
-	if (!(RREG32(mmCRTC_CONTROL + crtc_offsets[crtc]) & CRTC_CONTROL__CRTC_MASTER_EN_MASK))
-		return;
-
-	/* depending on when we hit vblank, we may be close to active; if so,
-	 * wait for another frame.
-	 */
-	while (dce_v6_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v6_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-
-	while (!dce_v6_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v6_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-}
-
 static u32 dce_v6_0_vblank_get_counter(struct amdgpu_device *adev, int crtc)
 {
 	if (crtc >= adev->mode_info.num_crtc)
@@ -3409,7 +3351,6 @@ static void dce_v6_0_encoder_add(struct amdgpu_device *adev,
 static const struct amdgpu_display_funcs dce_v6_0_display_funcs = {
 	.bandwidth_update = &dce_v6_0_bandwidth_update,
 	.vblank_get_counter = &dce_v6_0_vblank_get_counter,
-	.vblank_wait = &dce_v6_0_vblank_wait,
 	.backlight_set_level = &amdgpu_atombios_encoder_set_backlight_level,
 	.backlight_get_level = &amdgpu_atombios_encoder_get_backlight_level,
 	.hpd_sense = &dce_v6_0_hpd_sense,

drivers/gpu/drm/amd/amdgpu/dce_v8_0.c

@@ -140,66 +140,6 @@ static void dce_v8_0_audio_endpt_wreg(struct amdgpu_device *adev,
 	spin_unlock_irqrestore(&adev->audio_endpt_idx_lock, flags);
 }
 
-static bool dce_v8_0_is_in_vblank(struct amdgpu_device *adev, int crtc)
-{
-	if (RREG32(mmCRTC_STATUS + crtc_offsets[crtc]) &
-	    CRTC_STATUS__CRTC_V_BLANK_MASK)
-		return true;
-	else
-		return false;
-}
-
-static bool dce_v8_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
-{
-	u32 pos1, pos2;
-
-	pos1 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-	pos2 = RREG32(mmCRTC_STATUS_POSITION + crtc_offsets[crtc]);
-
-	if (pos1 != pos2)
-		return true;
-	else
-		return false;
-}
-
-/**
- * dce_v8_0_vblank_wait - vblank wait asic callback.
- *
- * @adev: amdgpu_device pointer
- * @crtc: crtc to wait for vblank on
- *
- * Wait for vblank on the requested crtc (evergreen+).
- */
-static void dce_v8_0_vblank_wait(struct amdgpu_device *adev, int crtc)
-{
-	unsigned i = 100;
-
-	if (crtc >= adev->mode_info.num_crtc)
-		return;
-
-	if (!(RREG32(mmCRTC_CONTROL + crtc_offsets[crtc]) & CRTC_CONTROL__CRTC_MASTER_EN_MASK))
-		return;
-
-	/* depending on when we hit vblank, we may be close to active; if so,
-	 * wait for another frame.
-	 */
-	while (dce_v8_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v8_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-
-	while (!dce_v8_0_is_in_vblank(adev, crtc)) {
-		if (i++ == 100) {
-			i = 0;
-			if (!dce_v8_0_is_counter_moving(adev, crtc))
-				break;
-		}
-	}
-}
-
 static u32 dce_v8_0_vblank_get_counter(struct amdgpu_device *adev, int crtc)
 {
 	if (crtc >= adev->mode_info.num_crtc)
@@ -3493,7 +3433,6 @@ static void dce_v8_0_encoder_add(struct amdgpu_device *adev,
 static const struct amdgpu_display_funcs dce_v8_0_display_funcs = {
 	.bandwidth_update = &dce_v8_0_bandwidth_update,
 	.vblank_get_counter = &dce_v8_0_vblank_get_counter,
-	.vblank_wait = &dce_v8_0_vblank_wait,
 	.backlight_set_level = &amdgpu_atombios_encoder_set_backlight_level,
 	.backlight_get_level = &amdgpu_atombios_encoder_get_backlight_level,
 	.hpd_sense = &dce_v8_0_hpd_sense,

drivers/gpu/drm/amd/amdgpu/dce_virtual.c

@@ -48,19 +48,6 @@ static void dce_virtual_set_crtc_vblank_interrupt_state(struct amdgpu_device *ad
 							int crtc,
 							enum amdgpu_interrupt_state state);
 
-/**
- * dce_virtual_vblank_wait - vblank wait asic callback.
- *
- * @adev: amdgpu_device pointer
- * @crtc: crtc to wait for vblank on
- *
- * Wait for vblank on the requested crtc (evergreen+).
- */
-static void dce_virtual_vblank_wait(struct amdgpu_device *adev, int crtc)
-{
-	return;
-}
-
 static u32 dce_virtual_vblank_get_counter(struct amdgpu_device *adev, int crtc)
 {
 	return 0;
@@ -654,7 +641,6 @@ static int dce_virtual_connector_encoder_init(struct amdgpu_device *adev,
 static const struct amdgpu_display_funcs dce_virtual_display_funcs = {
 	.bandwidth_update = &dce_virtual_bandwidth_update,
 	.vblank_get_counter = &dce_virtual_vblank_get_counter,
-	.vblank_wait = &dce_virtual_vblank_wait,
 	.backlight_set_level = NULL,
 	.backlight_get_level = NULL,
 	.hpd_sense = &dce_virtual_hpd_sense,

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -1568,7 +1568,6 @@ static int amdgpu_notify_freesync(struct drm_device *dev, void *data,
 static const struct amdgpu_display_funcs dm_display_funcs = {
 	.bandwidth_update = dm_bandwidth_update, /* called unconditionally */
 	.vblank_get_counter = dm_vblank_get_counter,/* called unconditionally */
-	.vblank_wait = NULL,
 	.backlight_set_level =
 		dm_set_backlight_level,/* called unconditionally */
 	.backlight_get_level =