path: root/common/recipes-kernel/linux/linux-yocto-4.14.71/0692-drm-amd-display-Fix-ckeckpatch-problems-in-amdgpu_dm.patch

From 62ff0d831cfc5225ac1a8db7da23c669492e74d5 Mon Sep 17 00:00:00 2001
From: Harry Wentland <harry.wentland@amd.com>
Date: Wed, 26 Jul 2017 21:03:22 -0400
Subject: [PATCH 0692/4131] drm/amd/display: Fix ckeckpatch problems in
 amdgpu_dm

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 179 ++++++++++++----------
 1 file changed, 94 insertions(+), 85 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index e84e157..9825af7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1687,14 +1687,13 @@ static int dm_crtc_cursor_set(
 	int ret;
 
 	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
-	ret		= EINVAL;
+	ret = EINVAL;
 
-	DRM_DEBUG_KMS(
-		"%s: crtc_id=%d with size %d to %d \n",
-		__func__,
-		amdgpu_crtc->crtc_id,
-		width,
-		height);
+	DRM_DEBUG_KMS("%s: crtc_id=%d with size %d to %d \n",
+		      __func__,
+		      amdgpu_crtc->crtc_id,
+		      width,
+		      height);
 
 	if (!address) {
 		/* turn off cursor */
@@ -1844,6 +1843,7 @@ static int get_fb_info(
 {
 	struct amdgpu_bo *rbo = gem_to_amdgpu_bo(amdgpu_fb->obj);
 	int r = amdgpu_bo_reserve(rbo, false);
+
 	if (unlikely(r)) {
 		DRM_ERROR("Unable to reserve buffer\n");
 		return r;
@@ -1951,10 +1951,9 @@ static int fill_plane_attributes_from_fb(
 
 	memset(&surface->tiling_info, 0, sizeof(surface->tiling_info));
 
-	/* Fill GFX params */
-	if (AMDGPU_TILING_GET(tiling_flags, ARRAY_MODE) == DC_ARRAY_2D_TILED_THIN1)
-	{
-		unsigned bankw, bankh, mtaspect, tile_split, num_banks;
+	/* Fill GFX8 params */
+	if (AMDGPU_TILING_GET(tiling_flags, ARRAY_MODE) == DC_ARRAY_2D_TILED_THIN1) {
+		unsigned int bankw, bankh, mtaspect, tile_split, num_banks;
 
 		bankw = AMDGPU_TILING_GET(tiling_flags, BANK_WIDTH);
 		bankh = AMDGPU_TILING_GET(tiling_flags, BANK_HEIGHT);
@@ -2167,7 +2166,8 @@ static enum dc_color_depth convert_color_depth_from_display_info(
 	uint32_t bpc = connector->display_info.bpc;
 
 	/* Limited color depth to 8bit
-	 * TODO: Still need to handle deep color*/
+	 * TODO: Still need to handle deep color
+	 */
 	if (bpc > 8)
 		bpc = 8;
 
@@ -2200,6 +2200,7 @@ static enum dc_aspect_ratio get_aspect_ratio(
 {
 	int32_t width = mode_in->crtc_hdisplay * 9;
 	int32_t height = mode_in->crtc_vdisplay * 16;
+
 	if ((width - height) < 10 && (width - height) > -10)
 		return ASPECT_RATIO_16_9;
 	else
@@ -2257,6 +2258,7 @@ static void fill_stream_properties_from_drm_display_mode(
 	const struct drm_connector *connector)
 {
 	struct dc_crtc_timing *timing_out = &stream->timing;
+
 	memset(timing_out, 0, sizeof(struct dc_crtc_timing));
 
 	timing_out->h_border_left = 0;
@@ -2301,6 +2303,7 @@ static void fill_stream_properties_from_drm_display_mode(
 
 	{
 		struct dc_transfer_func *tf = dc_create_transfer_func();
+
 		tf->type = TF_TYPE_PREDEFINED;
 		tf->tf = TRANSFER_FUNCTION_SRGB;
 		stream->out_transfer_func = tf;
@@ -2327,7 +2330,7 @@ static void fill_audio_info(
 		i++;
 	}
 
-	if(cea_revision >= 3) {
+	if (cea_revision >= 3) {
 		audio_info->mode_count = edid_caps->audio_mode_count;
 
 		for (i = 0; i < audio_info->mode_count; ++i) {
@@ -2346,7 +2349,7 @@ static void fill_audio_info(
 	audio_info->flags.all = edid_caps->speaker_flags;
 
 	/* TODO: We only check for the progressive mode, check for interlace mode too */
-	if(drm_connector->latency_present[0]) {
+	if (drm_connector->latency_present[0]) {
 		audio_info->video_latency = drm_connector->video_latency[0];
 		audio_info->audio_latency = drm_connector->audio_latency[0];
 	}
@@ -2364,7 +2367,7 @@ static void copy_crtc_timing_for_drm_display_mode(
 	dst_mode->crtc_clock = src_mode->crtc_clock;
 	dst_mode->crtc_hblank_start = src_mode->crtc_hblank_start;
 	dst_mode->crtc_hblank_end = src_mode->crtc_hblank_end;
-	dst_mode->crtc_hsync_start=  src_mode->crtc_hsync_start;
+	dst_mode->crtc_hsync_start =  src_mode->crtc_hsync_start;
 	dst_mode->crtc_hsync_end = src_mode->crtc_hsync_end;
 	dst_mode->crtc_htotal = src_mode->crtc_htotal;
 	dst_mode->crtc_hskew = src_mode->crtc_hskew;
@@ -2402,12 +2405,12 @@ static struct dc_stream *create_stream_for_sink(
 	struct drm_display_mode mode = *drm_mode;
 	bool native_mode_found = false;
 
-	if (NULL == aconnector) {
+	if (aconnector == NULL) {
 		DRM_ERROR("aconnector is NULL!\n");
 		goto drm_connector_null;
 	}
 
-	if (NULL == dm_state) {
+	if (dm_state == NULL) {
 		DRM_ERROR("dm_state is NULL!\n");
 		goto dm_state_null;
 	}
@@ -2415,7 +2418,7 @@ static struct dc_stream *create_stream_for_sink(
 	drm_connector = &aconnector->base;
 	stream = dc_create_stream_for_sink(aconnector->dc_sink);
 
-	if (NULL == stream) {
+	if (stream == NULL) {
 		DRM_ERROR("Failed to create stream for sink!\n");
 		goto stream_create_fail;
 	}
@@ -2433,7 +2436,7 @@ static struct dc_stream *create_stream_for_sink(
 				struct drm_display_mode,
 				head);
 
-	if (NULL == preferred_mode) {
+	if (preferred_mode == NULL) {
 		/* This may not be an error, the use case is when we we have no
 		 * usermode calls to reset and set mode upon hotplug. In this
 		 * case, we call set mode ourselves to restore the previous mode
@@ -2967,13 +2970,13 @@ int amdgpu_dm_connector_mode_valid(
 
 	dc_sink = to_amdgpu_connector(connector)->dc_sink;
 
-	if (NULL == dc_sink) {
+	if (dc_sink == NULL) {
 		DRM_ERROR("dc_sink is NULL!\n");
 		goto fail;
 	}
 
 	stream = dc_create_stream_for_sink(dc_sink);
-	if (NULL == stream) {
+	if (stream == NULL) {
 		DRM_ERROR("Failed to create stream for sink!\n");
 		goto fail;
 	}
@@ -2998,11 +3001,11 @@ int amdgpu_dm_connector_mode_valid(
 static const struct drm_connector_helper_funcs
 amdgpu_dm_connector_helper_funcs = {
 	/*
-	* If hotplug a second bigger display in FB Con mode, bigger resolution
-	* modes will be filtered by drm_mode_validate_size(), and those modes
-	* is missing after user start lightdm. So we need to renew modes list.
-	* in get_modes call back, not just return the modes count
-	*/
+	 * If hotplug a second bigger display in FB Con mode, bigger resolution
+	 * modes will be filtered by drm_mode_validate_size(), and those modes
+	 * is missing after user start lightdm. So we need to renew modes list.
+	 * in get_modes call back, not just return the modes count
+	 */
 	.get_modes = get_modes,
 	.mode_valid = amdgpu_dm_connector_mode_valid,
 	.best_encoder = best_encoder
@@ -3214,11 +3217,11 @@ static void dm_plane_helper_cleanup_fb(
 	if (unlikely(r)) {
 		DRM_ERROR("failed to reserve rbo before unpin\n");
 		return;
-	} else {
-		amdgpu_bo_unpin(rbo);
-		amdgpu_bo_unreserve(rbo);
-		amdgpu_bo_unref(&rbo);
-	};
+	}
+
+	amdgpu_bo_unpin(rbo);
+	amdgpu_bo_unreserve(rbo);
+	amdgpu_bo_unref(&rbo);
 }
 
 int dm_create_validation_set_for_connector(struct drm_connector *connector,
@@ -3234,14 +3237,14 @@ int dm_create_validation_set_for_connector(struct drm_connector *connector,
 			(mode->flags & DRM_MODE_FLAG_DBLSCAN))
 		return result;
 
-	if (NULL == dc_sink) {
+	if (dc_sink == NULL) {
 		DRM_ERROR("dc_sink is NULL!\n");
 		return result;
 	}
 
 	stream = dc_create_stream_for_sink(dc_sink);
 
-	if (NULL == stream) {
+	if (stream == NULL) {
 		DRM_ERROR("Failed to create stream for sink!\n");
 		return result;
 	}
@@ -3380,10 +3383,8 @@ int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
 	return 0;
 
 fail:
-	if (acrtc)
-		kfree(acrtc);
-	if (cursor_plane)
-		kfree(cursor_plane);
+	kfree(acrtc);
+	kfree(cursor_plane);
 	acrtc->crtc_id = -1;
 	return res;
 }
@@ -3430,12 +3431,13 @@ static void amdgpu_dm_get_native_mode(struct drm_connector *connector)
 
 	if (!list_empty(&connector->probed_modes)) {
 		struct drm_display_mode *preferred_mode = NULL;
+
 		list_for_each_entry(preferred_mode,
-				&connector->probed_modes,
-				head) {
-		if (preferred_mode->type & DRM_MODE_TYPE_PREFERRED) {
-			amdgpu_encoder->native_mode = *preferred_mode;
-		}
+				    &connector->probed_modes,
+				    head) {
+			if (preferred_mode->type & DRM_MODE_TYPE_PREFERRED)
+				amdgpu_encoder->native_mode = *preferred_mode;
+
 			break;
 		}
 
@@ -3453,7 +3455,7 @@ static struct drm_display_mode *amdgpu_dm_create_common_mode(
 
 	mode = drm_mode_duplicate(dev, native_mode);
 
-	if(mode == NULL)
+	if (mode == NULL)
 		return NULL;
 
 	mode->hdisplay = hdisplay;
@@ -3479,7 +3481,7 @@ static void amdgpu_dm_connector_add_common_modes(struct drm_encoder *encoder,
 		char name[DRM_DISPLAY_MODE_LEN];
 		int w;
 		int h;
-	}common_modes[] = {
+	} common_modes[] = {
 		{  "640x480",  640,  480},
 		{  "800x600",  800,  600},
 		{ "1024x768", 1024,  768},
@@ -3493,21 +3495,21 @@ static void amdgpu_dm_connector_add_common_modes(struct drm_encoder *encoder,
 		{"1920x1200", 1920, 1200}
 	};
 
-	n = sizeof(common_modes) / sizeof(common_modes[0]);
+	n = ARRAY_SIZE(common_modes);
 
 	for (i = 0; i < n; i++) {
 		struct drm_display_mode *curmode = NULL;
 		bool mode_existed = false;
 
 		if (common_modes[i].w > native_mode->hdisplay ||
-			common_modes[i].h > native_mode->vdisplay ||
-			(common_modes[i].w == native_mode->hdisplay &&
-			common_modes[i].h == native_mode->vdisplay))
-				continue;
+		    common_modes[i].h > native_mode->vdisplay ||
+		   (common_modes[i].w == native_mode->hdisplay &&
+		    common_modes[i].h == native_mode->vdisplay))
+			continue;
 
 		list_for_each_entry(curmode, &connector->probed_modes, head) {
 			if (common_modes[i].w == curmode->hdisplay &&
-				common_modes[i].h == curmode->vdisplay) {
+			    common_modes[i].h == curmode->vdisplay) {
 				mode_existed = true;
 				break;
 			}
@@ -3579,8 +3581,9 @@ void amdgpu_dm_connector_init_helper(
 
 	mutex_init(&aconnector->hpd_lock);
 
-	/*configure suport HPD hot plug connector_>polled default value is 0
-	 * which means HPD hot plug not supported*/
+	/* configure support HPD hot plug connector_>polled default value is 0
+	 * which means HPD hot plug not supported
+	 */
 	switch (connector_type) {
 	case DRM_MODE_CONNECTOR_HDMIA:
 		aconnector->base.polled = DRM_CONNECTOR_POLL_HPD;
@@ -3628,7 +3631,7 @@ int amdgpu_dm_i2c_xfer(struct i2c_adapter *i2c_adap,
 	int i;
 	int result = -EIO;
 
-	cmd.payloads = kzalloc(num * sizeof(struct i2c_payload), GFP_KERNEL);
+	cmd.payloads = kcalloc(num, sizeof(struct i2c_payload), GFP_KERNEL);
 
 	if (!cmd.payloads)
 		return result;
@@ -3672,12 +3675,12 @@ static struct amdgpu_i2c_adapter *create_i2c(
 	struct amdgpu_device *adev = ddc_service->ctx->driver_context;
 	struct amdgpu_i2c_adapter *i2c;
 
-	i2c = kzalloc(sizeof (struct amdgpu_i2c_adapter), GFP_KERNEL);
+	i2c = kzalloc(sizeof(struct amdgpu_i2c_adapter), GFP_KERNEL);
 	i2c->base.owner = THIS_MODULE;
 	i2c->base.class = I2C_CLASS_DDC;
 	i2c->base.dev.parent = &adev->pdev->dev;
 	i2c->base.algo = &amdgpu_dm_i2c_algo;
-	snprintf(i2c->base.name, sizeof (i2c->base.name), "AMDGPU DM i2c hw bus %d", link_index);
+	snprintf(i2c->base.name, sizeof(i2c->base.name), "AMDGPU DM i2c hw bus %d", link_index);
 	i2c_set_adapdata(&i2c->base, i2c);
 	i2c->ddc_service = ddc_service;
 
@@ -3685,7 +3688,8 @@ static struct amdgpu_i2c_adapter *create_i2c(
 }
 
 /* Note: this function assumes that dc_link_detect() was called for the
- * dc_link which will be represented by this aconnector. */
+ * dc_link which will be represented by this aconnector.
+ */
 int amdgpu_dm_connector_init(
 	struct amdgpu_display_manager *dm,
 	struct amdgpu_connector *aconnector,
@@ -3757,7 +3761,8 @@ int amdgpu_dm_connector_init(
 	if (link->connector_signal & (SIGNAL_TYPE_EDP | SIGNAL_TYPE_LVDS)) {
 		/* Event if registration failed, we should continue with
 		 * DM initialization because not having a backlight control
-		 * is better then a black screen. */
+		 * is better then a black screen.
+		 */
 		amdgpu_dm_register_backlight_device(dm);
 
 		if (dm->backlight_dev)
@@ -3859,9 +3864,9 @@ static bool is_scaling_state_different(
 	} else  if (dm_state->underscan_enable && !old_dm_state->underscan_enable) {
 		if (dm_state->underscan_hborder != 0 && dm_state->underscan_vborder != 0)
 			return true;
-	} else if (dm_state->underscan_hborder != old_dm_state->underscan_hborder
-				|| dm_state->underscan_vborder != old_dm_state->underscan_vborder)
-			return true;
+	} else if (dm_state->underscan_hborder != old_dm_state->underscan_hborder ||
+		   dm_state->underscan_vborder != old_dm_state->underscan_vborder)
+		return true;
 	return false;
 }
 
@@ -3952,11 +3957,11 @@ static void amdgpu_dm_do_flip(
 	target_vblank = target - drm_crtc_vblank_count(crtc) +
 			amdgpu_get_vblank_counter_kms(crtc->dev, acrtc->crtc_id);
 
-	/*TODO This might fail and hence better not used, wait
+	/* TODO This might fail and hence better not used, wait
 	 * explicitly on fences instead
 	 * and in general should be called for
 	 * blocking commit to as per framework helpers
-	 * */
+	 */
 	r = amdgpu_bo_reserve(abo, true);
 	if (unlikely(r != 0)) {
 		DRM_ERROR("failed to reserve buffer before flip\n");
@@ -4055,7 +4060,7 @@ static void amdgpu_dm_commit_surfaces(struct drm_atomic_state *state,
 			DRM_ERROR("add_surface: acrtc %d, already busy\n",
 					acrtc_attach->crtc_id);
 			spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
-			/* In comit tail framework this cannot happen */
+			/* In commit tail framework this cannot happen */
 			WARN_ON(1);
 		}
 		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
@@ -4174,6 +4179,7 @@ void amdgpu_dm_atomic_commit_tail(
 	for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
 		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 		struct drm_crtc_state *new_state = crtc->state;
+
 		new_acrtc_state = to_dm_crtc_state(new_state);
 		old_acrtc_state = to_dm_crtc_state(old_crtc_state);
 
@@ -4199,20 +4205,20 @@ void amdgpu_dm_atomic_commit_tail(
 
 			if (!new_acrtc_state->stream) {
 				/*
-				* this could happen because of issues with
-				* userspace notifications delivery.
-				* In this case userspace tries to set mode on
-				* display which is disconnect in fact.
-				* dc_sink in NULL in this case on aconnector.
-				* We expect reset mode will come soon.
-				*
-				* This can also happen when unplug is done
-				* during resume sequence ended
-				*
-				* In this case, we want to pretend we still
-				* have a sink to keep the pipe running so that
-				* hw state is consistent with the sw state
-				*/
+				 * this could happen because of issues with
+				 * userspace notifications delivery.
+				 * In this case userspace tries to set mode on
+				 * display which is disconnect in fact.
+				 * dc_sink in NULL in this case on aconnector.
+				 * We expect reset mode will come soon.
+				 *
+				 * This can also happen when unplug is done
+				 * during resume sequence ended
+				 *
+				 * In this case, we want to pretend we still
+				 * have a sink to keep the pipe running so that
+				 * hw state is consistent with the sw state
+				 */
 				DRM_DEBUG_KMS("%s: Failed to create new stream for crtc %d\n",
 						__func__, acrtc->base.base.id);
 				continue;
@@ -4255,6 +4261,7 @@ void amdgpu_dm_atomic_commit_tail(
 	if (adev->dm.freesync_module) {
 		for (i = 0; i < new_crtcs_count; i++) {
 			struct amdgpu_connector *aconnector = NULL;
+
 			new_acrtc_state = to_dm_crtc_state(new_crtcs[i]->base.state);
 
 			new_stream = new_acrtc_state->stream;
@@ -4264,10 +4271,9 @@ void amdgpu_dm_atomic_commit_tail(
 					&new_crtcs[i]->base,
 					false);
 			if (!aconnector) {
-				DRM_INFO(
-						"Atomic commit: Failed to find connector for acrtc id:%d "
-						"skipping freesync init\n",
-						new_crtcs[i]->crtc_id);
+				DRM_INFO("Atomic commit: Failed to find connector for acrtc id:%d "
+					 "skipping freesync init\n",
+					 new_crtcs[i]->crtc_id);
 				continue;
 			}
 
@@ -4282,6 +4288,7 @@ void amdgpu_dm_atomic_commit_tail(
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
 		new_acrtc_state = to_dm_crtc_state(crtc->state);
 
 		if (new_acrtc_state->stream != NULL) {
@@ -4339,6 +4346,7 @@ void amdgpu_dm_atomic_commit_tail(
 		 * loop to enable interrupts on newly arrived crtc
 		 */
 		struct amdgpu_crtc *acrtc = new_crtcs[i];
+
 		new_acrtc_state = to_dm_crtc_state(acrtc->base.state);
 
 		if (adev->dm.freesync_module)
@@ -4533,9 +4541,8 @@ static uint32_t remove_from_val_sets(
 
 	set_count--;
 
-	for (; i < set_count; i++) {
+	for (; i < set_count; i++)
 		val_sets[i] = val_sets[i + 1];
-	}
 
 	return set_count;
 }
@@ -4582,7 +4589,7 @@ static int do_aquire_global_lock(
 
 		if (ret == 0)
 			DRM_ERROR("[CRTC:%d:%s] hw_done or flip_done "
-					"timed out\n", crtc->base.id, crtc->name);
+				  "timed out\n", crtc->base.id, crtc->name);
 
 		drm_crtc_commit_put(commit);
 	}
@@ -4641,6 +4648,7 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
 	for_each_crtc_in_state(state, crtc, crtc_state, i) {
 		struct amdgpu_crtc *acrtc = NULL;
 		struct amdgpu_connector *aconnector = NULL;
+
 		old_acrtc_state = to_dm_crtc_state(crtc->state);
 		new_acrtc_state = to_dm_crtc_state(crtc_state);
 		acrtc = to_amdgpu_crtc(crtc);
@@ -4749,7 +4757,7 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
 		if (!acrtc || drm_atomic_crtc_needs_modeset(acrtc->base.state))
 			continue;
 
-		/* Skip any thing not scale or underscan chnages */
+		/* Skip any thing not scale or underscan changes */
 		if (!is_scaling_state_different(con_new_state, con_old_state))
 			continue;
 
@@ -4882,6 +4890,7 @@ void amdgpu_dm_add_sink_to_freesync_module(
 
 	struct drm_device *dev = connector->dev;
 	struct amdgpu_device *adev = dev->dev_private;
+
 	edid_check_required = false;
 	if (!amdgpu_connector->dc_sink) {
 		DRM_ERROR("dc_sink NULL, could not add free_sync module.\n");
-- 
2.7.4