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_DEBUG(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_DEBUG(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, '@' + ffs(nv_encoder->dcb->or));
 172 }
 173
 174 static void nv04_tv_destroy(struct drm_encoder *encoder)
 175 {
 176         get_slave_funcs(encoder)->destroy(encoder);
 177         drm_encoder_cleanup(encoder);
 178
 179         kfree(encoder->helper_private);
 180         kfree(nouveau_encoder(encoder));
 181 }
 182
 183 static const struct drm_encoder_funcs nv04_tv_funcs = {
 184         .destroy = nv04_tv_destroy,
 185 };
 186
 187 int
 188 nv04_tv_create(struct drm_connector *connector, struct dcb_output *entry)
 189 {
 190         struct nouveau_encoder *nv_encoder;
 191         struct drm_encoder *encoder;
 192         struct drm_device *dev = connector->dev;
 193         struct drm_encoder_helper_funcs *hfuncs;
 194         struct drm_encoder_slave_funcs *sfuncs;
 195         struct nouveau_drm *drm = nouveau_drm(dev);
 196         struct nouveau_i2c *i2c = nouveau_i2c(drm->device);
 197         struct nouveau_i2c_port *port = i2c->find(i2c, entry->i2c_index);
 198         int type, ret;
 199
 200         /* Ensure that we can talk to this encoder */
 201         type = nv04_tv_identify(dev, entry->i2c_index);
 202         if (type < 0)
 203                 return type;
 204
 205         /* Allocate the necessary memory */
 206         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 207         if (!nv_encoder)
 208                 return -ENOMEM;
 209
 210         hfuncs = kzalloc(sizeof(*hfuncs), GFP_KERNEL);
 211         if (!hfuncs) {
 212                 ret = -ENOMEM;
 213                 goto fail_free;
 214         }
 215
 216         /* Initialize the common members */
 217         encoder = to_drm_encoder(nv_encoder);
 218
 219         drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC);
 220         drm_encoder_helper_add(encoder, hfuncs);
 221
 222         encoder->possible_crtcs = entry->heads;
 223         encoder->possible_clones = 0;
 224         nv_encoder->dcb = entry;
 225         nv_encoder->or = ffs(entry->or) - 1;
 226
 227         /* Run the slave-specific initialization */
 228         ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
 229                                    &port->adapter, &nv04_tv_encoder_info[type]);
 230         if (ret < 0)
 231                 goto fail_cleanup;
 232
 233         /* Fill the function pointers */
 234         sfuncs = get_slave_funcs(encoder);
 235
 236         *hfuncs = (struct drm_encoder_helper_funcs) {
 237                 .dpms = nv04_tv_dpms,
 238                 .save = sfuncs->save,
 239                 .restore = sfuncs->restore,
 240                 .mode_fixup = sfuncs->mode_fixup,
 241                 .prepare = nv04_tv_prepare,
 242                 .commit = nv04_tv_commit,
 243                 .mode_set = nv04_tv_mode_set,
 244                 .detect = sfuncs->detect,
 245         };
 246
 247         /* Attach it to the specified connector. */
 248         sfuncs->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(hfuncs);
 256 fail_free:
 257         kfree(nv_encoder);
 258         return ret;
 259 }