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 "nouveau_drv.h"
28 #include "nouveau_reg.h"
29 #include "nouveau_encoder.h"
30 #include "nouveau_connector.h"
31 #include "nouveau_crtc.h"
32 #include "hw.h"
33 #include <drm/drm_modeset_helper_vtables.h>
34
35 #include <drm/i2c/ch7006.h>
36
37 static struct nvkm_i2c_bus_probe nv04_tv_encoder_info[] = {
38 {
39 {
40 I2C_BOARD_INFO("ch7006", 0x75),
41 .platform_data = &(struct ch7006_encoder_params) {
42 CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
43 0, 0, 0,
44 CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
45 CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
46 }
47 },
48 0
49 },
50 { }
51 };
52
nv04_tv_identify(struct drm_device * dev,int i2c_index)53 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
54 {
55 struct nouveau_drm *drm = nouveau_drm(dev);
56 struct nvkm_i2c *i2c = nvxx_i2c(drm);
57 struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, i2c_index);
58 if (bus) {
59 return nvkm_i2c_bus_probe(bus, "TV encoder",
60 nv04_tv_encoder_info,
61 NULL, NULL);
62 }
63 return -ENODEV;
64 }
65
66
67 #define PLLSEL_TV_CRTC1_MASK \
68 (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1 \
69 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
70 #define PLLSEL_TV_CRTC2_MASK \
71 (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2 \
72 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)
73
nv04_tv_dpms(struct drm_encoder * encoder,int mode)74 static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
75 {
76 struct drm_device *dev = encoder->dev;
77 struct nouveau_drm *drm = nouveau_drm(dev);
78 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
79 struct nv04_mode_state *state = &nv04_display(dev)->mode_reg;
80 uint8_t crtc1A;
81
82 NV_DEBUG(drm, "Setting dpms mode %d on TV encoder (output %d)\n",
83 mode, nv_encoder->dcb->index);
84
85 state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);
86
87 if (mode == DRM_MODE_DPMS_ON) {
88 int head = nouveau_crtc(encoder->crtc)->index;
89 crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);
90
91 state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
92 PLLSEL_TV_CRTC1_MASK;
93
94 /* Inhibit hsync */
95 crtc1A |= 0x80;
96
97 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
98 }
99
100 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);
101
102 get_slave_funcs(encoder)->dpms(encoder, mode);
103 }
104
nv04_tv_bind(struct drm_device * dev,int head,bool bind)105 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
106 {
107 struct nv04_crtc_reg *state = &nv04_display(dev)->mode_reg.crtc_reg[head];
108
109 state->tv_setup = 0;
110
111 if (bind)
112 state->CRTC[NV_CIO_CRE_49] |= 0x10;
113 else
114 state->CRTC[NV_CIO_CRE_49] &= ~0x10;
115
116 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
117 state->CRTC[NV_CIO_CRE_LCD__INDEX]);
118 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
119 state->CRTC[NV_CIO_CRE_49]);
120 NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
121 state->tv_setup);
122 }
123
nv04_tv_prepare(struct drm_encoder * encoder)124 static void nv04_tv_prepare(struct drm_encoder *encoder)
125 {
126 struct drm_device *dev = encoder->dev;
127 int head = nouveau_crtc(encoder->crtc)->index;
128 const struct drm_encoder_helper_funcs *helper = encoder->helper_private;
129
130 helper->dpms(encoder, DRM_MODE_DPMS_OFF);
131
132 nv04_dfp_disable(dev, head);
133
134 if (nv_two_heads(dev))
135 nv04_tv_bind(dev, head ^ 1, false);
136
137 nv04_tv_bind(dev, head, true);
138 }
139
nv04_tv_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)140 static void nv04_tv_mode_set(struct drm_encoder *encoder,
141 struct drm_display_mode *mode,
142 struct drm_display_mode *adjusted_mode)
143 {
144 struct drm_device *dev = encoder->dev;
145 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
146 struct nv04_crtc_reg *regp = &nv04_display(dev)->mode_reg.crtc_reg[nv_crtc->index];
147
148 regp->tv_htotal = adjusted_mode->htotal;
149 regp->tv_vtotal = adjusted_mode->vtotal;
150
151 /* These delay the TV signals with respect to the VGA port,
152 * they might be useful if we ever allow a CRTC to drive
153 * multiple outputs.
154 */
155 regp->tv_hskew = 1;
156 regp->tv_hsync_delay = 1;
157 regp->tv_hsync_delay2 = 64;
158 regp->tv_vskew = 1;
159 regp->tv_vsync_delay = 1;
160
161 get_slave_funcs(encoder)->mode_set(encoder, mode, adjusted_mode);
162 }
163
nv04_tv_commit(struct drm_encoder * encoder)164 static void nv04_tv_commit(struct drm_encoder *encoder)
165 {
166 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
167 struct drm_device *dev = encoder->dev;
168 struct nouveau_drm *drm = nouveau_drm(dev);
169 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
170 const struct drm_encoder_helper_funcs *helper = encoder->helper_private;
171
172 helper->dpms(encoder, DRM_MODE_DPMS_ON);
173
174 NV_DEBUG(drm, "Output %s is running on CRTC %d using output %c\n",
175 nv04_encoder_get_connector(nv_encoder)->base.name,
176 nv_crtc->index, '@' + ffs(nv_encoder->dcb->or));
177 }
178
nv04_tv_destroy(struct drm_encoder * encoder)179 static void nv04_tv_destroy(struct drm_encoder *encoder)
180 {
181 get_slave_funcs(encoder)->destroy(encoder);
182 drm_encoder_cleanup(encoder);
183
184 kfree(encoder->helper_private);
185 kfree(nouveau_encoder(encoder));
186 }
187
188 static const struct drm_encoder_funcs nv04_tv_funcs = {
189 .destroy = nv04_tv_destroy,
190 };
191
192 static const struct drm_encoder_helper_funcs nv04_tv_helper_funcs = {
193 .dpms = nv04_tv_dpms,
194 .mode_fixup = drm_i2c_encoder_mode_fixup,
195 .prepare = nv04_tv_prepare,
196 .commit = nv04_tv_commit,
197 .mode_set = nv04_tv_mode_set,
198 .detect = drm_i2c_encoder_detect,
199 };
200
201 int
nv04_tv_create(struct drm_connector * connector,struct dcb_output * entry)202 nv04_tv_create(struct drm_connector *connector, struct dcb_output *entry)
203 {
204 struct nouveau_encoder *nv_encoder;
205 struct drm_encoder *encoder;
206 struct drm_device *dev = connector->dev;
207 struct nouveau_drm *drm = nouveau_drm(dev);
208 struct nvkm_i2c *i2c = nvxx_i2c(drm);
209 struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, entry->i2c_index);
210 int type, ret;
211
212 /* Ensure that we can talk to this encoder */
213 type = nv04_tv_identify(dev, entry->i2c_index);
214 if (type < 0)
215 return type;
216
217 /* Allocate the necessary memory */
218 nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
219 if (!nv_encoder)
220 return -ENOMEM;
221
222 /* Initialize the common members */
223 encoder = to_drm_encoder(nv_encoder);
224
225 drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC,
226 NULL);
227 drm_encoder_helper_add(encoder, &nv04_tv_helper_funcs);
228
229 nv_encoder->enc_save = drm_i2c_encoder_save;
230 nv_encoder->enc_restore = drm_i2c_encoder_restore;
231
232 encoder->possible_crtcs = entry->heads;
233 encoder->possible_clones = 0;
234 nv_encoder->dcb = entry;
235 nv_encoder->or = ffs(entry->or) - 1;
236
237 /* Run the slave-specific initialization */
238 ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
239 &bus->i2c,
240 &nv04_tv_encoder_info[type].dev);
241 if (ret < 0)
242 goto fail_cleanup;
243
244 /* Attach it to the specified connector. */
245 get_slave_funcs(encoder)->create_resources(encoder, connector);
246 drm_connector_attach_encoder(connector, encoder);
247
248 return 0;
249
250 fail_cleanup:
251 drm_encoder_cleanup(encoder);
252 kfree(nv_encoder);
253 return ret;
254 }
255