summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nv04_tv.c
blob: 9c63099e9c428a74f04f23095950d181c631c142 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
/*
 * Copyright (C) 2009 Francisco Jerez.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
#include "nouveau_crtc.h"
#include "nouveau_hw.h"
#include "drm_crtc_helper.h"

#include "i2c/ch7006.h"

static struct {
	struct i2c_board_info board_info;
	struct drm_encoder_funcs funcs;
	struct drm_encoder_helper_funcs hfuncs;
	void *params;

} nv04_tv_encoder_info[] = {
	{
		.board_info = { I2C_BOARD_INFO("ch7006", 0x75) },
		.params = &(struct ch7006_encoder_params) {
			CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
			0, 0, 0,
			CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
			CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
		},
	},
};

static bool probe_i2c_addr(struct i2c_adapter *adapter, int addr)
{
	struct i2c_msg msg = {
		.addr = addr,
		.len = 0,
	};

	return i2c_transfer(adapter, &msg, 1) == 1;
}

int nv04_tv_identify(struct drm_device *dev, int i2c_index)
{
	struct nouveau_i2c_chan *i2c;
	bool was_locked;
	int i, ret;

	NV_TRACE(dev, "Probing TV encoders on I2C bus: %d\n", i2c_index);

	i2c = nouveau_i2c_find(dev, i2c_index);
	if (!i2c)
		return -ENODEV;

	was_locked = NVLockVgaCrtcs(dev, false);

	for (i = 0; i < ARRAY_SIZE(nv04_tv_encoder_info); i++) {
		if (probe_i2c_addr(&i2c->adapter,
				   nv04_tv_encoder_info[i].board_info.addr)) {
			ret = i;
			break;
		}
	}

	if (i < ARRAY_SIZE(nv04_tv_encoder_info)) {
		NV_TRACE(dev, "Detected TV encoder: %s\n",
			 nv04_tv_encoder_info[i].board_info.type);

	} else {
		NV_TRACE(dev, "No TV encoders found.\n");
		i = -ENODEV;
	}

	NVLockVgaCrtcs(dev, was_locked);
	return i;
}

#define PLLSEL_TV_CRTC1_MASK				\
	(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1		\
	 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
#define PLLSEL_TV_CRTC2_MASK				\
	(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2		\
	 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)

static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
{
	struct drm_device *dev = encoder->dev;
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv04_mode_state *state = &dev_priv->mode_reg;
	uint8_t crtc1A;

	NV_INFO(dev, "Setting dpms mode %d on TV encoder (output %d)\n",
		mode, nv_encoder->dcb->index);

	state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);

	if (mode == DRM_MODE_DPMS_ON) {
		int head = nouveau_crtc(encoder->crtc)->index;
		crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);

		state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
					PLLSEL_TV_CRTC1_MASK;

		/* Inhibit hsync */
		crtc1A |= 0x80;

		NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
	}

	NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);

	to_encoder_slave(encoder)->slave_funcs->dpms(encoder, mode);
}

static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv04_crtc_reg *state = &dev_priv->mode_reg.crtc_reg[head];

	state->tv_setup = 0;

	if (bind) {
		state->CRTC[NV_CIO_CRE_LCD__INDEX] = 0;
		state->CRTC[NV_CIO_CRE_49] |= 0x10;
	} else {
		state->CRTC[NV_CIO_CRE_49] &= ~0x10;
	}

	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
		       state->CRTC[NV_CIO_CRE_LCD__INDEX]);
	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
		       state->CRTC[NV_CIO_CRE_49]);
	NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
		      state->tv_setup);
}

static void nv04_tv_prepare(struct drm_encoder *encoder)
{
	struct drm_device *dev = encoder->dev;
	int head = nouveau_crtc(encoder->crtc)->index;
	struct drm_encoder_helper_funcs *helper = encoder->helper_private;

	helper->dpms(encoder, DRM_MODE_DPMS_OFF);

	nv04_dfp_disable(dev, head);

	if (nv_two_heads(dev))
		nv04_tv_bind(dev, head ^ 1, false);

	nv04_tv_bind(dev, head, true);
}

static void nv04_tv_mode_set(struct drm_encoder *encoder,
			     struct drm_display_mode *mode,
			     struct drm_display_mode *adjusted_mode)
{
	struct drm_device *dev = encoder->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
	struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];

	regp->tv_htotal = adjusted_mode->htotal;
	regp->tv_vtotal = adjusted_mode->vtotal;

	/* These delay the TV signals with respect to the VGA port,
	 * they might be useful if we ever allow a CRTC to drive
	 * multiple outputs.
	 */
	regp->tv_hskew = 1;
	regp->tv_hsync_delay = 1;
	regp->tv_hsync_delay2 = 64;
	regp->tv_vskew = 1;
	regp->tv_vsync_delay = 1;

	to_encoder_slave(encoder)->slave_funcs->mode_set(encoder, mode, adjusted_mode);
}

static void nv04_tv_commit(struct drm_encoder *encoder)
{
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
	struct drm_device *dev = encoder->dev;
	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
	struct drm_encoder_helper_funcs *helper = encoder->helper_private;

	helper->dpms(encoder, DRM_MODE_DPMS_ON);

	NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
		      drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index,
		      '@' + ffs(nv_encoder->dcb->or));
}

static void nv04_tv_destroy(struct drm_encoder *encoder)
{
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);

	to_encoder_slave(encoder)->slave_funcs->destroy(encoder);

	drm_encoder_cleanup(encoder);

	kfree(nv_encoder);
}

int nv04_tv_create(struct drm_device *dev, struct dcb_entry *entry)
{
	struct nouveau_encoder *nv_encoder;
	struct drm_encoder *encoder;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct i2c_adapter *adap;
	struct drm_encoder_funcs *funcs = NULL;
	struct drm_encoder_helper_funcs *hfuncs = NULL;
	struct drm_encoder_slave_funcs *sfuncs = NULL;
	int i2c_index = entry->i2c_index;
	int type, ret;
	bool was_locked;

	/* Ensure that we can talk to this encoder */
	type = nv04_tv_identify(dev, i2c_index);
	if (type < 0)
		return type;

	/* Allocate the necessary memory */
	nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
	if (!nv_encoder)
		return -ENOMEM;

	/* Initialize the common members */
	encoder = to_drm_encoder(nv_encoder);

	funcs = &nv04_tv_encoder_info[type].funcs;
	hfuncs = &nv04_tv_encoder_info[type].hfuncs;

	drm_encoder_init(dev, encoder, funcs, DRM_MODE_ENCODER_TVDAC);
	drm_encoder_helper_add(encoder, hfuncs);

	encoder->possible_crtcs = entry->heads;
	encoder->possible_clones = 0;

	nv_encoder->dcb = entry;
	nv_encoder->or = ffs(entry->or) - 1;

	/* Run the slave-specific initialization */
	adap = &dev_priv->vbios->dcb->i2c[i2c_index].chan->adapter;

	was_locked = NVLockVgaCrtcs(dev, false);

	ret = drm_i2c_encoder_init(encoder->dev, to_encoder_slave(encoder), adap,
				   &nv04_tv_encoder_info[type].board_info);

	NVLockVgaCrtcs(dev, was_locked);

	if (ret < 0)
		goto fail;

	/* Fill the function pointers */
	sfuncs = to_encoder_slave(encoder)->slave_funcs;

	*funcs = (struct drm_encoder_funcs) {
		.destroy = nv04_tv_destroy,
	};

	*hfuncs = (struct drm_encoder_helper_funcs) {
		.dpms = nv04_tv_dpms,
		.save = sfuncs->save,
		.restore = sfuncs->restore,
		.mode_fixup = sfuncs->mode_fixup,
		.prepare = nv04_tv_prepare,
		.commit = nv04_tv_commit,
		.mode_set = nv04_tv_mode_set,
		.detect = sfuncs->detect,
	};

	/* Set the slave encoder configuration */
	sfuncs->set_config(encoder, nv04_tv_encoder_info[type].params);

	return 0;

fail:
	drm_encoder_cleanup(encoder);

	kfree(nv_encoder);
	return ret;
}