Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
[linux-3.10.git] / drivers / gpu / drm / nouveau / nv04_tv.c
1 /*
2  * Copyright (C) 2009 Francisco Jerez.
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 <drm/drmP.h>
28 #include "nouveau_drm.h"
29 #include "nouveau_reg.h"
30 #include "nouveau_encoder.h"
31 #include "nouveau_connector.h"
32 #include "nouveau_crtc.h"
33 #include "nouveau_hw.h"
34 #include <drm/drm_crtc_helper.h>
35
36 #include <drm/i2c/ch7006.h>
37
38 #include <subdev/i2c.h>
39
40 static struct i2c_board_info nv04_tv_encoder_info[] = {
41         {
42                 I2C_BOARD_INFO("ch7006", 0x75),
43                 .platform_data = &(struct ch7006_encoder_params) {
44                         CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
45                         0, 0, 0,
46                         CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
47                         CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
48                 }
49         },
50         { }
51 };
52
53 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
54 {
55         struct nouveau_drm *drm = nouveau_drm(dev);
56         struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
57
58         return i2c->identify(i2c, i2c_index, "TV encoder",
59                              nv04_tv_encoder_info, NULL);
60 }
61
62
63 #define PLLSEL_TV_CRTC1_MASK                            \
64         (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1          \
65          | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
66 #define PLLSEL_TV_CRTC2_MASK                            \
67         (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2          \
68          | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)
69
70 static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
71 {
72         struct drm_device *dev = encoder->dev;
73         struct nouveau_drm *drm = nouveau_drm(dev);
74         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
75         struct nv04_mode_state *state = &nv04_display(dev)->mode_reg;
76         uint8_t crtc1A;
77
78         NV_INFO(drm, "Setting dpms mode %d on TV encoder (output %d)\n",
79                 mode, nv_encoder->dcb->index);
80
81         state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);
82
83         if (mode == DRM_MODE_DPMS_ON) {
84                 int head = nouveau_crtc(encoder->crtc)->index;
85                 crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);
86
87                 state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
88                                         PLLSEL_TV_CRTC1_MASK;
89
90                 /* Inhibit hsync */
91                 crtc1A |= 0x80;
92
93                 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
94         }
95
96         NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);
97
98         get_slave_funcs(encoder)->dpms(encoder, mode);
99 }
100
101 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
102 {
103         struct nv04_crtc_reg *state = &nv04_display(dev)->mode_reg.crtc_reg[head];
104
105         state->tv_setup = 0;
106
107         if (bind)
108                 state->CRTC[NV_CIO_CRE_49] |= 0x10;
109         else
110                 state->CRTC[NV_CIO_CRE_49] &= ~0x10;
111
112         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
113                        state->CRTC[NV_CIO_CRE_LCD__INDEX]);
114         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
115                        state->CRTC[NV_CIO_CRE_49]);
116         NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
117                       state->tv_setup);
118 }
119
120 static void nv04_tv_prepare(struct drm_encoder *encoder)
121 {
122         struct drm_device *dev = encoder->dev;
123         int head = nouveau_crtc(encoder->crtc)->index;
124         struct drm_encoder_helper_funcs *helper = encoder->helper_private;
125
126         helper->dpms(encoder, DRM_MODE_DPMS_OFF);
127
128         nv04_dfp_disable(dev, head);
129
130         if (nv_two_heads(dev))
131                 nv04_tv_bind(dev, head ^ 1, false);
132
133         nv04_tv_bind(dev, head, true);
134 }
135
136 static void nv04_tv_mode_set(struct drm_encoder *encoder,
137                              struct drm_display_mode *mode,
138                              struct drm_display_mode *adjusted_mode)
139 {
140         struct drm_device *dev = encoder->dev;
141         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
142         struct nv04_crtc_reg *regp = &nv04_display(dev)->mode_reg.crtc_reg[nv_crtc->index];
143
144         regp->tv_htotal = adjusted_mode->htotal;
145         regp->tv_vtotal = adjusted_mode->vtotal;
146
147         /* These delay the TV signals with respect to the VGA port,
148          * they might be useful if we ever allow a CRTC to drive
149          * multiple outputs.
150          */
151         regp->tv_hskew = 1;
152         regp->tv_hsync_delay = 1;
153         regp->tv_hsync_delay2 = 64;
154         regp->tv_vskew = 1;
155         regp->tv_vsync_delay = 1;
156
157         get_slave_funcs(encoder)->mode_set(encoder, mode, adjusted_mode);
158 }
159
160 static void nv04_tv_commit(struct drm_encoder *encoder)
161 {
162         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
163         struct drm_device *dev = encoder->dev;
164         struct nouveau_drm *drm = nouveau_drm(dev);
165         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
166         struct drm_encoder_helper_funcs *helper = encoder->helper_private;
167
168         helper->dpms(encoder, DRM_MODE_DPMS_ON);
169
170         NV_INFO(drm, "Output %s is running on CRTC %d using output %c\n",
171                       drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index,
172                       '@' + ffs(nv_encoder->dcb->or));
173 }
174
175 static void nv04_tv_destroy(struct drm_encoder *encoder)
176 {
177         get_slave_funcs(encoder)->destroy(encoder);
178         drm_encoder_cleanup(encoder);
179
180         kfree(encoder->helper_private);
181         kfree(nouveau_encoder(encoder));
182 }
183
184 static const struct drm_encoder_funcs nv04_tv_funcs = {
185         .destroy = nv04_tv_destroy,
186 };
187
188 int
189 nv04_tv_create(struct drm_connector *connector, struct dcb_output *entry)
190 {
191         struct nouveau_encoder *nv_encoder;
192         struct drm_encoder *encoder;
193         struct drm_device *dev = connector->dev;
194         struct drm_encoder_helper_funcs *hfuncs;
195         struct drm_encoder_slave_funcs *sfuncs;
196         struct nouveau_drm *drm = nouveau_drm(dev);
197         struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
198         struct nouveau_i2c_port *port = i2c->find(i2c, entry->i2c_index);
199         int type, ret;
200
201         /* Ensure that we can talk to this encoder */
202         type = nv04_tv_identify(dev, entry->i2c_index);
203         if (type < 0)
204                 return type;
205
206         /* Allocate the necessary memory */
207         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
208         if (!nv_encoder)
209                 return -ENOMEM;
210
211         hfuncs = kzalloc(sizeof(*hfuncs), GFP_KERNEL);
212         if (!hfuncs) {
213                 ret = -ENOMEM;
214                 goto fail_free;
215         }
216
217         /* Initialize the common members */
218         encoder = to_drm_encoder(nv_encoder);
219
220         drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC);
221         drm_encoder_helper_add(encoder, hfuncs);
222
223         encoder->possible_crtcs = entry->heads;
224         encoder->possible_clones = 0;
225         nv_encoder->dcb = entry;
226         nv_encoder->or = ffs(entry->or) - 1;
227
228         /* Run the slave-specific initialization */
229         ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
230                                    &port->adapter, &nv04_tv_encoder_info[type]);
231         if (ret < 0)
232                 goto fail_cleanup;
233
234         /* Fill the function pointers */
235         sfuncs = get_slave_funcs(encoder);
236
237         *hfuncs = (struct drm_encoder_helper_funcs) {
238                 .dpms = nv04_tv_dpms,
239                 .save = sfuncs->save,
240                 .restore = sfuncs->restore,
241                 .mode_fixup = sfuncs->mode_fixup,
242                 .prepare = nv04_tv_prepare,
243                 .commit = nv04_tv_commit,
244                 .mode_set = nv04_tv_mode_set,
245                 .detect = sfuncs->detect,
246         };
247
248         /* Attach it to the specified connector. */
249         sfuncs->create_resources(encoder, connector);
250         drm_mode_connector_attach_encoder(connector, encoder);
251
252         return 0;
253
254 fail_cleanup:
255         drm_encoder_cleanup(encoder);
256         kfree(hfuncs);
257 fail_free:
258         kfree(nv_encoder);
259         return ret;
260 }