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amdgpu_encoders.c revision 1.2.6.2 
      1 /*	$NetBSD: amdgpu_encoders.c,v 1.2.6.2 2019/06/10 22:07:57 christos Exp $	*/
      2 
      3 /*
      4  * Copyright 2007-8 Advanced Micro Devices, Inc.
      5  * Copyright 2008 Red Hat Inc.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included in
     15  * all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     23  * OTHER DEALINGS IN THE SOFTWARE.
     24  *
     25  * Authors: Dave Airlie
     26  *          Alex Deucher
     27  */
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_encoders.c,v 1.2.6.2 2019/06/10 22:07:57 christos Exp $");
     30 
     31 #include <drm/drmP.h>
     32 #include <drm/drm_crtc_helper.h>
     33 #include <drm/amdgpu_drm.h>
     34 #include "amdgpu.h"
     35 #include "amdgpu_connectors.h"
     36 #include "atom.h"
     37 #include "atombios_encoders.h"
     38 
     39 void
     40 amdgpu_link_encoder_connector(struct drm_device *dev)
     41 {
     42 	struct amdgpu_device *adev = dev->dev_private;
     43 	struct drm_connector *connector;
     44 	struct amdgpu_connector *amdgpu_connector;
     45 	struct drm_encoder *encoder;
     46 	struct amdgpu_encoder *amdgpu_encoder;
     47 
     48 	/* walk the list and link encoders to connectors */
     49 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
     50 		amdgpu_connector = to_amdgpu_connector(connector);
     51 		list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
     52 			amdgpu_encoder = to_amdgpu_encoder(encoder);
     53 			if (amdgpu_encoder->devices & amdgpu_connector->devices) {
     54 				drm_mode_connector_attach_encoder(connector, encoder);
     55 				if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
     56 					amdgpu_atombios_encoder_init_backlight(amdgpu_encoder, connector);
     57 					adev->mode_info.bl_encoder = amdgpu_encoder;
     58 				}
     59 			}
     60 		}
     61 	}
     62 }
     63 
     64 void amdgpu_encoder_set_active_device(struct drm_encoder *encoder)
     65 {
     66 	struct drm_device *dev = encoder->dev;
     67 	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
     68 	struct drm_connector *connector;
     69 
     70 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
     71 		if (connector->encoder == encoder) {
     72 			struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
     73 			amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices;
     74 			DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
     75 				  amdgpu_encoder->active_device, amdgpu_encoder->devices,
     76 				  amdgpu_connector->devices, encoder->encoder_type);
     77 		}
     78 	}
     79 }
     80 
     81 struct drm_connector *
     82 amdgpu_get_connector_for_encoder(struct drm_encoder *encoder)
     83 {
     84 	struct drm_device *dev = encoder->dev;
     85 	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
     86 	struct drm_connector *connector;
     87 	struct amdgpu_connector *amdgpu_connector;
     88 
     89 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
     90 		amdgpu_connector = to_amdgpu_connector(connector);
     91 		if (amdgpu_encoder->active_device & amdgpu_connector->devices)
     92 			return connector;
     93 	}
     94 	return NULL;
     95 }
     96 
     97 struct drm_connector *
     98 amdgpu_get_connector_for_encoder_init(struct drm_encoder *encoder)
     99 {
    100 	struct drm_device *dev = encoder->dev;
    101 	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
    102 	struct drm_connector *connector;
    103 	struct amdgpu_connector *amdgpu_connector;
    104 
    105 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
    106 		amdgpu_connector = to_amdgpu_connector(connector);
    107 		if (amdgpu_encoder->devices & amdgpu_connector->devices)
    108 			return connector;
    109 	}
    110 	return NULL;
    111 }
    112 
    113 struct drm_encoder *amdgpu_get_external_encoder(struct drm_encoder *encoder)
    114 {
    115 	struct drm_device *dev = encoder->dev;
    116 	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
    117 	struct drm_encoder *other_encoder;
    118 	struct amdgpu_encoder *other_amdgpu_encoder;
    119 
    120 	if (amdgpu_encoder->is_ext_encoder)
    121 		return NULL;
    122 
    123 	list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
    124 		if (other_encoder == encoder)
    125 			continue;
    126 		other_amdgpu_encoder = to_amdgpu_encoder(other_encoder);
    127 		if (other_amdgpu_encoder->is_ext_encoder &&
    128 		    (amdgpu_encoder->devices & other_amdgpu_encoder->devices))
    129 			return other_encoder;
    130 	}
    131 	return NULL;
    132 }
    133 
    134 u16 amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
    135 {
    136 	struct drm_encoder *other_encoder = amdgpu_get_external_encoder(encoder);
    137 
    138 	if (other_encoder) {
    139 		struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(other_encoder);
    140 
    141 		switch (amdgpu_encoder->encoder_id) {
    142 		case ENCODER_OBJECT_ID_TRAVIS:
    143 		case ENCODER_OBJECT_ID_NUTMEG:
    144 			return amdgpu_encoder->encoder_id;
    145 		default:
    146 			return ENCODER_OBJECT_ID_NONE;
    147 		}
    148 	}
    149 	return ENCODER_OBJECT_ID_NONE;
    150 }
    151 
    152 void amdgpu_panel_mode_fixup(struct drm_encoder *encoder,
    153 			     struct drm_display_mode *adjusted_mode)
    154 {
    155 	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
    156 	struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
    157 	unsigned hblank = native_mode->htotal - native_mode->hdisplay;
    158 	unsigned vblank = native_mode->vtotal - native_mode->vdisplay;
    159 	unsigned hover = native_mode->hsync_start - native_mode->hdisplay;
    160 	unsigned vover = native_mode->vsync_start - native_mode->vdisplay;
    161 	unsigned hsync_width = native_mode->hsync_end - native_mode->hsync_start;
    162 	unsigned vsync_width = native_mode->vsync_end - native_mode->vsync_start;
    163 
    164 	adjusted_mode->clock = native_mode->clock;
    165 	adjusted_mode->flags = native_mode->flags;
    166 
    167 	adjusted_mode->hdisplay = native_mode->hdisplay;
    168 	adjusted_mode->vdisplay = native_mode->vdisplay;
    169 
    170 	adjusted_mode->htotal = native_mode->hdisplay + hblank;
    171 	adjusted_mode->hsync_start = native_mode->hdisplay + hover;
    172 	adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
    173 
    174 	adjusted_mode->vtotal = native_mode->vdisplay + vblank;
    175 	adjusted_mode->vsync_start = native_mode->vdisplay + vover;
    176 	adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
    177 
    178 	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
    179 
    180 	adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
    181 	adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
    182 
    183 	adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
    184 	adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
    185 	adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
    186 
    187 	adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
    188 	adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
    189 	adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
    190 
    191 }
    192 
    193 bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder,
    194 				    u32 pixel_clock)
    195 {
    196 	struct drm_connector *connector;
    197 	struct amdgpu_connector *amdgpu_connector;
    198 	struct amdgpu_connector_atom_dig *dig_connector;
    199 
    200 	connector = amdgpu_get_connector_for_encoder(encoder);
    201 	/* if we don't have an active device yet, just use one of
    202 	 * the connectors tied to the encoder.
    203 	 */
    204 	if (!connector)
    205 		connector = amdgpu_get_connector_for_encoder_init(encoder);
    206 	amdgpu_connector = to_amdgpu_connector(connector);
    207 
    208 	switch (connector->connector_type) {
    209 	case DRM_MODE_CONNECTOR_DVII:
    210 	case DRM_MODE_CONNECTOR_HDMIB:
    211 		if (amdgpu_connector->use_digital) {
    212 			/* HDMI 1.3 supports up to 340 Mhz over single link */
    213 			if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) {
    214 				if (pixel_clock > 340000)
    215 					return true;
    216 				else
    217 					return false;
    218 			} else {
    219 				if (pixel_clock > 165000)
    220 					return true;
    221 				else
    222 					return false;
    223 			}
    224 		} else
    225 			return false;
    226 	case DRM_MODE_CONNECTOR_DVID:
    227 	case DRM_MODE_CONNECTOR_HDMIA:
    228 	case DRM_MODE_CONNECTOR_DisplayPort:
    229 		dig_connector = amdgpu_connector->con_priv;
    230 		if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
    231 		    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
    232 			return false;
    233 		else {
    234 			/* HDMI 1.3 supports up to 340 Mhz over single link */
    235 			if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) {
    236 				if (pixel_clock > 340000)
    237 					return true;
    238 				else
    239 					return false;
    240 			} else {
    241 				if (pixel_clock > 165000)
    242 					return true;
    243 				else
    244 					return false;
    245 			}
    246 		}
    247 	default:
    248 		return false;
    249 	}
    250 }
    251