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
39static void
40nv50_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
66static enum drm_connector_status
67nv50_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
121static void
122nv50_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
165static void
166nv50_dac_save(struct drm_encoder *encoder)
167{
168	NV_ERROR(encoder->dev, "!!\n");
169}
170
171static void
172nv50_dac_restore(struct drm_encoder *encoder)
173{
174	NV_ERROR(encoder->dev, "!!\n");
175}
176
177static bool
178nv50_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		drm_mode_copy(adjusted_mode, connector->native_mode);
195
196	return true;
197}
198
199static void
200nv50_dac_commit(struct drm_encoder *encoder)
201{
202}
203
204static void
205nv50_dac_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
206		  struct drm_display_mode *adjusted_mode)
207{
208	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
209	struct drm_device *dev = encoder->dev;
210	struct nouveau_channel *evo = nv50_display(dev)->master;
211	struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
212	uint32_t mode_ctl = 0, mode_ctl2 = 0;
213	int ret;
214
215	NV_DEBUG_KMS(dev, "or %d type %d crtc %d\n",
216		     nv_encoder->or, nv_encoder->dcb->type, crtc->index);
217
218	nv50_dac_dpms(encoder, DRM_MODE_DPMS_ON);
219
220	if (crtc->index == 1)
221		mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC1;
222	else
223		mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC0;
224
225	/* Lacking a working tv-out, this is not a 100% sure. */
226	if (nv_encoder->dcb->type == OUTPUT_ANALOG)
227		mode_ctl |= 0x40;
228	else
229	if (nv_encoder->dcb->type == OUTPUT_TV)
230		mode_ctl |= 0x100;
231
232	if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
233		mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NHSYNC;
234
235	if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
236		mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NVSYNC;
237
238	ret = RING_SPACE(evo, 3);
239	if (ret) {
240		NV_ERROR(dev, "no space while connecting DAC\n");
241		return;
242	}
243	BEGIN_RING(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 2);
244	OUT_RING(evo, mode_ctl);
245	OUT_RING(evo, mode_ctl2);
246
247	nv_encoder->crtc = encoder->crtc;
248}
249
250static struct drm_crtc *
251nv50_dac_crtc_get(struct drm_encoder *encoder)
252{
253	return nouveau_encoder(encoder)->crtc;
254}
255
256static const struct drm_encoder_helper_funcs nv50_dac_helper_funcs = {
257	.dpms = nv50_dac_dpms,
258	.save = nv50_dac_save,
259	.restore = nv50_dac_restore,
260	.mode_fixup = nv50_dac_mode_fixup,
261	.prepare = nv50_dac_disconnect,
262	.commit = nv50_dac_commit,
263	.mode_set = nv50_dac_mode_set,
264	.get_crtc = nv50_dac_crtc_get,
265	.detect = nv50_dac_detect,
266	.disable = nv50_dac_disconnect
267};
268
269static void
270nv50_dac_destroy(struct drm_encoder *encoder)
271{
272	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
273
274	if (!encoder)
275		return;
276
277	NV_DEBUG_KMS(encoder->dev, "\n");
278
279	drm_encoder_cleanup(encoder);
280	kfree(nv_encoder);
281}
282
283static const struct drm_encoder_funcs nv50_dac_encoder_funcs = {
284	.destroy = nv50_dac_destroy,
285};
286
287int
288nv50_dac_create(struct drm_connector *connector, struct dcb_entry *entry)
289{
290	struct nouveau_encoder *nv_encoder;
291	struct drm_encoder *encoder;
292
293	nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
294	if (!nv_encoder)
295		return -ENOMEM;
296	encoder = to_drm_encoder(nv_encoder);
297
298	nv_encoder->dcb = entry;
299	nv_encoder->or = ffs(entry->or) - 1;
300
301	drm_encoder_init(connector->dev, encoder, &nv50_dac_encoder_funcs,
302			 DRM_MODE_ENCODER_DAC);
303	drm_encoder_helper_add(encoder, &nv50_dac_helper_funcs);
304
305	encoder->possible_crtcs = entry->heads;
306	encoder->possible_clones = 0;
307
308	drm_mode_connector_attach_encoder(connector, encoder);
309	return 0;
310}
311
312