1 /*
2 * Copyright (C) 2008 Maarten Maathuis.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include "drmP.h"
28 #include "drm_crtc_helper.h"
29
30 #define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
31 #include "nouveau_reg.h"
32 #include "nouveau_drv.h"
33 #include "nouveau_dma.h"
34 #include "nouveau_encoder.h"
35 #include "nouveau_connector.h"
36 #include "nouveau_crtc.h"
37 #include "nv50_display.h"
38
39 static void
nv50_dac_disconnect(struct drm_encoder * encoder)40 nv50_dac_disconnect(struct drm_encoder *encoder)
41 {
42 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
43 struct drm_device *dev = encoder->dev;
44 struct nouveau_channel *evo = nv50_display(dev)->master;
45 int ret;
46
47 if (!nv_encoder->crtc)
48 return;
49 nv50_crtc_blank(nouveau_crtc(nv_encoder->crtc), true);
50
51 NV_DEBUG_KMS(dev, "Disconnecting DAC %d\n", nv_encoder->or);
52
53 ret = RING_SPACE(evo, 4);
54 if (ret) {
55 NV_ERROR(dev, "no space while disconnecting DAC\n");
56 return;
57 }
58 BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 1);
59 OUT_RING (evo, 0);
60 BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
61 OUT_RING (evo, 0);
62
63 nv_encoder->crtc = NULL;
64 }
65
66 static enum drm_connector_status
nv50_dac_detect(struct drm_encoder * encoder,struct drm_connector * connector)67 nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector)
68 {
69 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
70 struct drm_device *dev = encoder->dev;
71 struct drm_nouveau_private *dev_priv = dev->dev_private;
72 enum drm_connector_status status = connector_status_disconnected;
73 uint32_t dpms_state, load_pattern, load_state;
74 int or = nv_encoder->or;
75
76 nv_wr32(dev, NV50_PDISPLAY_DAC_CLK_CTRL1(or), 0x00000001);
77 dpms_state = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or));
78
79 nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
80 0x00150000 | NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
81 if (!nv_wait(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
82 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
83 NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
84 NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
85 nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
86 return status;
87 }
88
89 /* Use bios provided value if possible. */
90 if (dev_priv->vbios.dactestval) {
91 load_pattern = dev_priv->vbios.dactestval;
92 NV_DEBUG_KMS(dev, "Using bios provided load_pattern of %d\n",
93 load_pattern);
94 } else {
95 load_pattern = 340;
96 NV_DEBUG_KMS(dev, "Using default load_pattern of %d\n",
97 load_pattern);
98 }
99
100 nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or),
101 NV50_PDISPLAY_DAC_LOAD_CTRL_ACTIVE | load_pattern);
102 mdelay(45); /* give it some time to process */
103 load_state = nv_rd32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or));
104
105 nv_wr32(dev, NV50_PDISPLAY_DAC_LOAD_CTRL(or), 0);
106 nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), dpms_state |
107 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
108
109 if ((load_state & NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT) ==
110 NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT)
111 status = connector_status_connected;
112
113 if (status == connector_status_connected)
114 NV_DEBUG_KMS(dev, "Load was detected on output with or %d\n", or);
115 else
116 NV_DEBUG_KMS(dev, "Load was not detected on output with or %d\n", or);
117
118 return status;
119 }
120
121 static void
nv50_dac_dpms(struct drm_encoder * encoder,int mode)122 nv50_dac_dpms(struct drm_encoder *encoder, int mode)
123 {
124 struct drm_device *dev = encoder->dev;
125 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
126 uint32_t val;
127 int or = nv_encoder->or;
128
129 NV_DEBUG_KMS(dev, "or %d mode %d\n", or, mode);
130
131 /* wait for it to be done */
132 if (!nv_wait(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
133 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
134 NV_ERROR(dev, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
135 NV_ERROR(dev, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
136 nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
137 return;
138 }
139
140 val = nv_rd32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or)) & ~0x7F;
141
142 if (mode != DRM_MODE_DPMS_ON)
143 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_BLANKED;
144
145 switch (mode) {
146 case DRM_MODE_DPMS_STANDBY:
147 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
148 break;
149 case DRM_MODE_DPMS_SUSPEND:
150 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
151 break;
152 case DRM_MODE_DPMS_OFF:
153 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_OFF;
154 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
155 val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
156 break;
157 default:
158 break;
159 }
160
161 nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(or), val |
162 NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
163 }
164
165 static void
nv50_dac_save(struct drm_encoder * encoder)166 nv50_dac_save(struct drm_encoder *encoder)
167 {
168 NV_ERROR(encoder->dev, "!!\n");
169 }
170
171 static void
nv50_dac_restore(struct drm_encoder * encoder)172 nv50_dac_restore(struct drm_encoder *encoder)
173 {
174 NV_ERROR(encoder->dev, "!!\n");
175 }
176
177 static bool
nv50_dac_mode_fixup(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)178 nv50_dac_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
179 struct drm_display_mode *adjusted_mode)
180 {
181 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
182 struct nouveau_connector *connector;
183
184 NV_DEBUG_KMS(encoder->dev, "or %d\n", nv_encoder->or);
185
186 connector = nouveau_encoder_connector_get(nv_encoder);
187 if (!connector) {
188 NV_ERROR(encoder->dev, "Encoder has no connector\n");
189 return false;
190 }
191
192 if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
193 connector->native_mode) {
194 int id = adjusted_mode->base.id;
195 *adjusted_mode = *connector->native_mode;
196 adjusted_mode->base.id = id;
197 }
198
199 return true;
200 }
201
202 static void
nv50_dac_commit(struct drm_encoder * encoder)203 nv50_dac_commit(struct drm_encoder *encoder)
204 {
205 }
206
207 static void
nv50_dac_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)208 nv50_dac_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
209 struct drm_display_mode *adjusted_mode)
210 {
211 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
212 struct drm_device *dev = encoder->dev;
213 struct nouveau_channel *evo = nv50_display(dev)->master;
214 struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
215 uint32_t mode_ctl = 0, mode_ctl2 = 0;
216 int ret;
217
218 NV_DEBUG_KMS(dev, "or %d type %d crtc %d\n",
219 nv_encoder->or, nv_encoder->dcb->type, crtc->index);
220
221 nv50_dac_dpms(encoder, DRM_MODE_DPMS_ON);
222
223 if (crtc->index == 1)
224 mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC1;
225 else
226 mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC0;
227
228 /* Lacking a working tv-out, this is not a 100% sure. */
229 if (nv_encoder->dcb->type == OUTPUT_ANALOG)
230 mode_ctl |= 0x40;
231 else
232 if (nv_encoder->dcb->type == OUTPUT_TV)
233 mode_ctl |= 0x100;
234
235 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
236 mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NHSYNC;
237
238 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
239 mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NVSYNC;
240
241 ret = RING_SPACE(evo, 3);
242 if (ret) {
243 NV_ERROR(dev, "no space while connecting DAC\n");
244 return;
245 }
246 BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 2);
247 OUT_RING(evo, mode_ctl);
248 OUT_RING(evo, mode_ctl2);
249
250 nv_encoder->crtc = encoder->crtc;
251 }
252
253 static struct drm_crtc *
nv50_dac_crtc_get(struct drm_encoder * encoder)254 nv50_dac_crtc_get(struct drm_encoder *encoder)
255 {
256 return nouveau_encoder(encoder)->crtc;
257 }
258
259 static const struct drm_encoder_helper_funcs nv50_dac_helper_funcs = {
260 .dpms = nv50_dac_dpms,
261 .save = nv50_dac_save,
262 .restore = nv50_dac_restore,
263 .mode_fixup = nv50_dac_mode_fixup,
264 .prepare = nv50_dac_disconnect,
265 .commit = nv50_dac_commit,
266 .mode_set = nv50_dac_mode_set,
267 .get_crtc = nv50_dac_crtc_get,
268 .detect = nv50_dac_detect,
269 .disable = nv50_dac_disconnect
270 };
271
272 static void
nv50_dac_destroy(struct drm_encoder * encoder)273 nv50_dac_destroy(struct drm_encoder *encoder)
274 {
275 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
276
277 if (!encoder)
278 return;
279
280 NV_DEBUG_KMS(encoder->dev, "\n");
281
282 drm_encoder_cleanup(encoder);
283 kfree(nv_encoder);
284 }
285
286 static const struct drm_encoder_funcs nv50_dac_encoder_funcs = {
287 .destroy = nv50_dac_destroy,
288 };
289
290 int
nv50_dac_create(struct drm_connector * connector,struct dcb_entry * entry)291 nv50_dac_create(struct drm_connector *connector, struct dcb_entry *entry)
292 {
293 struct nouveau_encoder *nv_encoder;
294 struct drm_encoder *encoder;
295
296 nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
297 if (!nv_encoder)
298 return -ENOMEM;
299 encoder = to_drm_encoder(nv_encoder);
300
301 nv_encoder->dcb = entry;
302 nv_encoder->or = ffs(entry->or) - 1;
303
304 drm_encoder_init(connector->dev, encoder, &nv50_dac_encoder_funcs,
305 DRM_MODE_ENCODER_DAC);
306 drm_encoder_helper_add(encoder, &nv50_dac_helper_funcs);
307
308 encoder->possible_crtcs = entry->heads;
309 encoder->possible_clones = 0;
310
311 drm_mode_connector_attach_encoder(connector, encoder);
312 return 0;
313 }
314
315