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 "drmP.h"
  28 #include "nouveau_drv.h"
  29 #include "nouveau_encoder.h"
  30 #include "nouveau_connector.h"
  31 #include "nouveau_crtc.h"
  32 #include "nouveau_hw.h"
  33 #include "drm_crtc_helper.h"
  34
  35 #include "i2c/ch7006.h"
  36
  37 static struct {
  38         struct i2c_board_info board_info;
  39         struct drm_encoder_funcs funcs;
  40         struct drm_encoder_helper_funcs hfuncs;
  41         void *params;
  42
  43 } nv04_tv_encoder_info[] = {
  44         {
  45                 .board_info = { I2C_BOARD_INFO("ch7006", 0x75) },
  46                 .params = &(struct ch7006_encoder_params) {
  47                         CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
  48                         0, 0, 0,
  49                         CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
  50                         CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
  51                 },
  52         },
  53 };
  54
  55 static bool probe_i2c_addr(struct i2c_adapter *adapter, int addr)
  56 {
  57         struct i2c_msg msg = {
  58                 .addr = addr,
  59                 .len = 0,
  60         };
  61
  62         return i2c_transfer(adapter, &msg, 1) == 1;
  63 }
  64
  65 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
  66 {
  67         struct nouveau_i2c_chan *i2c;
  68         bool was_locked;
  69         int i, ret;
  70
  71         NV_TRACE(dev, "Probing TV encoders on I2C bus: %d\n", i2c_index);
  72
  73         i2c = nouveau_i2c_find(dev, i2c_index);
  74         if (!i2c)
  75                 return -ENODEV;
  76
  77         was_locked = NVLockVgaCrtcs(dev, false);
  78
  79         for (i = 0; i < ARRAY_SIZE(nv04_tv_encoder_info); i++) {
  80                 if (probe_i2c_addr(&i2c->adapter,
  81                                    nv04_tv_encoder_info[i].board_info.addr)) {
  82                         ret = i;
  83                         break;
  84                 }
  85         }
  86
  87         if (i < ARRAY_SIZE(nv04_tv_encoder_info)) {
  88                 NV_TRACE(dev, "Detected TV encoder: %s\n",
  89                          nv04_tv_encoder_info[i].board_info.type);
  90
  91         } else {
  92                 NV_TRACE(dev, "No TV encoders found.\n");
  93                 i = -ENODEV;
  94         }
  95
  96         NVLockVgaCrtcs(dev, was_locked);
  97         return i;
  98 }
  99
 100 #define PLLSEL_TV_CRTC1_MASK                            \
 101         (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1          \
 102          | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
 103 #define PLLSEL_TV_CRTC2_MASK                            \
 104         (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2          \
 105          | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)
 106
 107 static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
 108 {
 109         struct drm_device *dev = encoder->dev;
 110         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 111         struct drm_nouveau_private *dev_priv = dev->dev_private;
 112         struct nv04_mode_state *state = &dev_priv->mode_reg;
 113         uint8_t crtc1A;
 114
 115         NV_INFO(dev, "Setting dpms mode %d on TV encoder (output %d)\n",
 116                 mode, nv_encoder->dcb->index);
 117
 118         state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);
 119
 120         if (mode == DRM_MODE_DPMS_ON) {
 121                 int head = nouveau_crtc(encoder->crtc)->index;
 122                 crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);
 123
 124                 state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
 125                                         PLLSEL_TV_CRTC1_MASK;
 126
 127                 /* Inhibit hsync */
 128                 crtc1A |= 0x80;
 129
 130                 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
 131         }
 132
 133         NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);
 134
 135         to_encoder_slave(encoder)->slave_funcs->dpms(encoder, mode);
 136 }
 137
 138 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
 139 {
 140         struct drm_nouveau_private *dev_priv = dev->dev_private;
 141         struct nv04_crtc_reg *state = &dev_priv->mode_reg.crtc_reg[head];
 142
 143         state->tv_setup = 0;
 144
 145         if (bind) {
 146                 state->CRTC[NV_CIO_CRE_LCD__INDEX] = 0;
 147                 state->CRTC[NV_CIO_CRE_49] |= 0x10;
 148         } else {
 149                 state->CRTC[NV_CIO_CRE_49] &= ~0x10;
 150         }
 151
 152         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
 153                        state->CRTC[NV_CIO_CRE_LCD__INDEX]);
 154         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
 155                        state->CRTC[NV_CIO_CRE_49]);
 156         NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
 157                       state->tv_setup);
 158 }
 159
 160 static void nv04_tv_prepare(struct drm_encoder *encoder)
 161 {
 162         struct drm_device *dev = encoder->dev;
 163         int head = nouveau_crtc(encoder->crtc)->index;
 164         struct drm_encoder_helper_funcs *helper = encoder->helper_private;
 165
 166         helper->dpms(encoder, DRM_MODE_DPMS_OFF);
 167
 168         nv04_dfp_disable(dev, head);
 169
 170         if (nv_two_heads(dev))
 171                 nv04_tv_bind(dev, head ^ 1, false);
 172
 173         nv04_tv_bind(dev, head, true);
 174 }
 175
 176 static void nv04_tv_mode_set(struct drm_encoder *encoder,
 177                              struct drm_display_mode *mode,
 178                              struct drm_display_mode *adjusted_mode)
 179 {
 180         struct drm_device *dev = encoder->dev;
 181         struct drm_nouveau_private *dev_priv = dev->dev_private;
 182         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 183         struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];
 184
 185         regp->tv_htotal = adjusted_mode->htotal;
 186         regp->tv_vtotal = adjusted_mode->vtotal;
 187
 188         /* These delay the TV signals with respect to the VGA port,
 189          * they might be useful if we ever allow a CRTC to drive
 190          * multiple outputs.
 191          */
 192         regp->tv_hskew = 1;
 193         regp->tv_hsync_delay = 1;
 194         regp->tv_hsync_delay2 = 64;
 195         regp->tv_vskew = 1;
 196         regp->tv_vsync_delay = 1;
 197
 198         to_encoder_slave(encoder)->slave_funcs->mode_set(encoder, mode, adjusted_mode);
 199 }
 200
 201 static void nv04_tv_commit(struct drm_encoder *encoder)
 202 {
 203         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 204         struct drm_device *dev = encoder->dev;
 205         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 206         struct drm_encoder_helper_funcs *helper = encoder->helper_private;
 207
 208         helper->dpms(encoder, DRM_MODE_DPMS_ON);
 209
 210         NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
 211                       drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index,
 212                       '@' + ffs(nv_encoder->dcb->or));
 213 }
 214
 215 static void nv04_tv_destroy(struct drm_encoder *encoder)
 216 {
 217         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 218
 219         to_encoder_slave(encoder)->slave_funcs->destroy(encoder);
 220
 221         drm_encoder_cleanup(encoder);
 222
 223         kfree(nv_encoder);
 224 }
 225
 226 int nv04_tv_create(struct drm_device *dev, struct dcb_entry *entry)
 227 {
 228         struct nouveau_encoder *nv_encoder;
 229         struct drm_encoder *encoder;
 230         struct drm_nouveau_private *dev_priv = dev->dev_private;
 231         struct i2c_adapter *adap;
 232         struct drm_encoder_funcs *funcs = NULL;
 233         struct drm_encoder_helper_funcs *hfuncs = NULL;
 234         struct drm_encoder_slave_funcs *sfuncs = NULL;
 235         int i2c_index = entry->i2c_index;
 236         int type, ret;
 237         bool was_locked;
 238
 239         /* Ensure that we can talk to this encoder */
 240         type = nv04_tv_identify(dev, i2c_index);
 241         if (type < 0)
 242                 return type;
 243
 244         /* Allocate the necessary memory */
 245         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 246         if (!nv_encoder)
 247                 return -ENOMEM;
 248
 249         /* Initialize the common members */
 250         encoder = to_drm_encoder(nv_encoder);
 251
 252         funcs = &nv04_tv_encoder_info[type].funcs;
 253         hfuncs = &nv04_tv_encoder_info[type].hfuncs;
 254
 255         drm_encoder_init(dev, encoder, funcs, DRM_MODE_ENCODER_TVDAC);
 256         drm_encoder_helper_add(encoder, hfuncs);
 257
 258         encoder->possible_crtcs = entry->heads;
 259         encoder->possible_clones = 0;
 260
 261         nv_encoder->dcb = entry;
 262         nv_encoder->or = ffs(entry->or) - 1;
 263
 264         /* Run the slave-specific initialization */
 265         adap = &dev_priv->vbios.dcb.i2c[i2c_index].chan->adapter;
 266
 267         was_locked = NVLockVgaCrtcs(dev, false);
 268
 269         ret = drm_i2c_encoder_init(encoder->dev, to_encoder_slave(encoder), adap,
 270                                    &nv04_tv_encoder_info[type].board_info);
 271
 272         NVLockVgaCrtcs(dev, was_locked);
 273
 274         if (ret < 0)
 275                 goto fail;
 276
 277         /* Fill the function pointers */
 278         sfuncs = to_encoder_slave(encoder)->slave_funcs;
 279
 280         *funcs = (struct drm_encoder_funcs) {
 281                 .destroy = nv04_tv_destroy,
 282         };
 283
 284         *hfuncs = (struct drm_encoder_helper_funcs) {
 285                 .dpms = nv04_tv_dpms,
 286                 .save = sfuncs->save,
 287                 .restore = sfuncs->restore,
 288                 .mode_fixup = sfuncs->mode_fixup,
 289                 .prepare = nv04_tv_prepare,
 290                 .commit = nv04_tv_commit,
 291                 .mode_set = nv04_tv_mode_set,
 292                 .detect = sfuncs->detect,
 293         };
 294
 295         /* Set the slave encoder configuration */
 296         sfuncs->set_config(encoder, nv04_tv_encoder_info[type].params);
 297
 298         return 0;
 299
 300 fail:
 301         drm_encoder_cleanup(encoder);
 302
 303         kfree(nv_encoder);
 304         return ret;
 305 }