1 /* $NetBSD: nouveau_dispnv04_tvnv04.c,v 1.2 2014/08/06 15:01:34 riastradh Exp $ */
2
3 /*
4 * Copyright (C) 2009 Francisco Jerez.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial
17 * portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: nouveau_dispnv04_tvnv04.c,v 1.2 2014/08/06 15:01:34 riastradh Exp $");
31
32 #include <linux/err.h>
33
34 #include <drm/drmP.h>
35 #include "nouveau_drm.h"
36 #include "nouveau_reg.h"
37 #include "nouveau_encoder.h"
38 #include "nouveau_connector.h"
39 #include "nouveau_crtc.h"
40 #include "hw.h"
41 #include <drm/drm_crtc_helper.h>
42
43 #include <drm/i2c/ch7006.h>
44
45 #include <subdev/i2c.h>
46
47 static struct nouveau_i2c_board_info nv04_tv_encoder_info[] = {
48 {
49 {
50 I2C_BOARD_INFO("ch7006", 0x75),
51 .platform_data = &(struct ch7006_encoder_params) {
52 CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
53 0, 0, 0,
54 CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
55 CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
56 }
57 },
58 0
59 },
60 { }
61 };
62
nv04_tv_identify(struct drm_device * dev,int i2c_index)63 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
64 {
65 struct nouveau_drm *drm = nouveau_drm(dev);
66 struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
67
68 return i2c->identify(i2c, i2c_index, "TV encoder",
69 nv04_tv_encoder_info, NULL, NULL);
70 }
71
72
73 #define PLLSEL_TV_CRTC1_MASK \
74 (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1 \
75 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
76 #define PLLSEL_TV_CRTC2_MASK \
77 (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2 \
78 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)
79
nv04_tv_dpms(struct drm_encoder * encoder,int mode)80 static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
81 {
82 struct drm_device *dev = encoder->dev;
83 struct nouveau_drm *drm = nouveau_drm(dev);
84 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
85 struct nv04_mode_state *state = &nv04_display(dev)->mode_reg;
86 uint8_t crtc1A;
87
88 NV_DEBUG(drm, "Setting dpms mode %d on TV encoder (output %d)\n",
89 mode, nv_encoder->dcb->index);
90
91 state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);
92
93 if (mode == DRM_MODE_DPMS_ON) {
94 int head = nouveau_crtc(encoder->crtc)->index;
95 crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);
96
97 state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
98 PLLSEL_TV_CRTC1_MASK;
99
100 /* Inhibit hsync */
101 crtc1A |= 0x80;
102
103 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
104 }
105
106 NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);
107
108 get_slave_funcs(encoder)->dpms(encoder, mode);
109 }
110
nv04_tv_bind(struct drm_device * dev,int head,bool bind)111 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
112 {
113 struct nv04_crtc_reg *state = &nv04_display(dev)->mode_reg.crtc_reg[head];
114
115 state->tv_setup = 0;
116
117 if (bind)
118 state->CRTC[NV_CIO_CRE_49] |= 0x10;
119 else
120 state->CRTC[NV_CIO_CRE_49] &= ~0x10;
121
122 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
123 state->CRTC[NV_CIO_CRE_LCD__INDEX]);
124 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
125 state->CRTC[NV_CIO_CRE_49]);
126 NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
127 state->tv_setup);
128 }
129
nv04_tv_prepare(struct drm_encoder * encoder)130 static void nv04_tv_prepare(struct drm_encoder *encoder)
131 {
132 struct drm_device *dev = encoder->dev;
133 int head = nouveau_crtc(encoder->crtc)->index;
134 struct drm_encoder_helper_funcs *helper = encoder->helper_private;
135
136 helper->dpms(encoder, DRM_MODE_DPMS_OFF);
137
138 nv04_dfp_disable(dev, head);
139
140 if (nv_two_heads(dev))
141 nv04_tv_bind(dev, head ^ 1, false);
142
143 nv04_tv_bind(dev, head, true);
144 }
145
nv04_tv_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)146 static void nv04_tv_mode_set(struct drm_encoder *encoder,
147 struct drm_display_mode *mode,
148 struct drm_display_mode *adjusted_mode)
149 {
150 struct drm_device *dev = encoder->dev;
151 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
152 struct nv04_crtc_reg *regp = &nv04_display(dev)->mode_reg.crtc_reg[nv_crtc->index];
153
154 regp->tv_htotal = adjusted_mode->htotal;
155 regp->tv_vtotal = adjusted_mode->vtotal;
156
157 /* These delay the TV signals with respect to the VGA port,
158 * they might be useful if we ever allow a CRTC to drive
159 * multiple outputs.
160 */
161 regp->tv_hskew = 1;
162 regp->tv_hsync_delay = 1;
163 regp->tv_hsync_delay2 = 64;
164 regp->tv_vskew = 1;
165 regp->tv_vsync_delay = 1;
166
167 get_slave_funcs(encoder)->mode_set(encoder, mode, adjusted_mode);
168 }
169
nv04_tv_commit(struct drm_encoder * encoder)170 static void nv04_tv_commit(struct drm_encoder *encoder)
171 {
172 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
173 struct drm_device *dev = encoder->dev;
174 struct nouveau_drm *drm = nouveau_drm(dev);
175 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
176 struct drm_encoder_helper_funcs *helper = encoder->helper_private;
177
178 helper->dpms(encoder, DRM_MODE_DPMS_ON);
179
180 NV_DEBUG(drm, "Output %s is running on CRTC %d using output %c\n",
181 drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index, '@' + ffs(nv_encoder->dcb->or));
182 }
183
nv04_tv_destroy(struct drm_encoder * encoder)184 static void nv04_tv_destroy(struct drm_encoder *encoder)
185 {
186 get_slave_funcs(encoder)->destroy(encoder);
187 drm_encoder_cleanup(encoder);
188
189 kfree(encoder->helper_private);
190 kfree(nouveau_encoder(encoder));
191 }
192
193 static const struct drm_encoder_funcs nv04_tv_funcs = {
194 .destroy = nv04_tv_destroy,
195 };
196
197 static const struct drm_encoder_helper_funcs nv04_tv_helper_funcs = {
198 .dpms = nv04_tv_dpms,
199 .save = drm_i2c_encoder_save,
200 .restore = drm_i2c_encoder_restore,
201 .mode_fixup = drm_i2c_encoder_mode_fixup,
202 .prepare = nv04_tv_prepare,
203 .commit = nv04_tv_commit,
204 .mode_set = nv04_tv_mode_set,
205 .detect = drm_i2c_encoder_detect,
206 };
207
208 int
nv04_tv_create(struct drm_connector * connector,struct dcb_output * entry)209 nv04_tv_create(struct drm_connector *connector, struct dcb_output *entry)
210 {
211 struct nouveau_encoder *nv_encoder;
212 struct drm_encoder *encoder;
213 struct drm_device *dev = connector->dev;
214 struct nouveau_drm *drm = nouveau_drm(dev);
215 struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
216 struct nouveau_i2c_port *port = i2c->find(i2c, entry->i2c_index);
217 int type, ret;
218
219 /* Ensure that we can talk to this encoder */
220 type = nv04_tv_identify(dev, entry->i2c_index);
221 if (type < 0)
222 return type;
223
224 /* Allocate the necessary memory */
225 nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
226 if (!nv_encoder)
227 return -ENOMEM;
228
229 /* Initialize the common members */
230 encoder = to_drm_encoder(nv_encoder);
231
232 drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC);
233 drm_encoder_helper_add(encoder, &nv04_tv_helper_funcs);
234
235 encoder->possible_crtcs = entry->heads;
236 encoder->possible_clones = 0;
237 nv_encoder->dcb = entry;
238 nv_encoder->or = ffs(entry->or) - 1;
239
240 /* Run the slave-specific initialization */
241 ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
242 &port->adapter,
243 &nv04_tv_encoder_info[type].dev);
244 if (ret < 0)
245 goto fail_cleanup;
246
247 /* Attach it to the specified connector. */
248 get_slave_funcs(encoder)->create_resources(encoder, connector);
249 drm_mode_connector_attach_encoder(connector, encoder);
250
251 return 0;
252
253 fail_cleanup:
254 drm_encoder_cleanup(encoder);
255 kfree(nv_encoder);
256 return ret;
257 }
258