kernel/drivers/gpu/drm/nouveau/dispnv04/tvnv04.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 "hw.h"
  34 #include <drm/drm_crtc_helper.h>
  35
  36 #include <drm/i2c/ch7006.h>
  37
  38 static struct nvkm_i2c_bus_probe nv04_tv_encoder_info[] = {
  39         {
  40                 {
  41                         I2C_BOARD_INFO("ch7006", 0x75),
  42                         .platform_data = &(struct ch7006_encoder_params) {
  43                                 CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
  44                                 0, 0, 0,
  45                                 CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
  46                                 CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
  47                         }
  48                 },
  49                 0
  50         },
  51         { }
  52 };
  53
  54 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
  55 {
  56         struct nouveau_drm *drm = nouveau_drm(dev);
  57         struct nvkm_i2c *i2c = nvxx_i2c(&drm->device);
  58         struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, i2c_index);
  59         if (bus) {
  60                 return nvkm_i2c_bus_probe(bus, "TV encoder",
  61                                           nv04_tv_encoder_info,
  62                                           NULL, NULL);
  63         }
  64         return -ENODEV;
  65 }
  66
  67
  68 #define PLLSEL_TV_CRTC1_MASK                            \
  69         (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1          \
  70          | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
  71 #define PLLSEL_TV_CRTC2_MASK                            \
  72         (NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2          \
  73          | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)
  74
  75 static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
  76 {
  77         struct drm_device *dev = encoder->dev;
  78         struct nouveau_drm *drm = nouveau_drm(dev);
  79         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
  80         struct nv04_mode_state *state = &nv04_display(dev)->mode_reg;
  81         uint8_t crtc1A;
  82
  83         NV_DEBUG(drm, "Setting dpms mode %d on TV encoder (output %d)\n",
  84                  mode, nv_encoder->dcb->index);
  85
  86         state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);
  87
  88         if (mode == DRM_MODE_DPMS_ON) {
  89                 int head = nouveau_crtc(encoder->crtc)->index;
  90                 crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);
  91
  92                 state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
  93                                         PLLSEL_TV_CRTC1_MASK;
  94
  95                 /* Inhibit hsync */
  96                 crtc1A |= 0x80;
  97
  98                 NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
  99         }
 100
 101         NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);
 102
 103         get_slave_funcs(encoder)->dpms(encoder, mode);
 104 }
 105
 106 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
 107 {
 108         struct nv04_crtc_reg *state = &nv04_display(dev)->mode_reg.crtc_reg[head];
 109
 110         state->tv_setup = 0;
 111
 112         if (bind)
 113                 state->CRTC[NV_CIO_CRE_49] |= 0x10;
 114         else
 115                 state->CRTC[NV_CIO_CRE_49] &= ~0x10;
 116
 117         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
 118                        state->CRTC[NV_CIO_CRE_LCD__INDEX]);
 119         NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
 120                        state->CRTC[NV_CIO_CRE_49]);
 121         NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
 122                       state->tv_setup);
 123 }
 124
 125 static void nv04_tv_prepare(struct drm_encoder *encoder)
 126 {
 127         struct drm_device *dev = encoder->dev;
 128         int head = nouveau_crtc(encoder->crtc)->index;
 129         const struct drm_encoder_helper_funcs *helper = encoder->helper_private;
 130
 131         helper->dpms(encoder, DRM_MODE_DPMS_OFF);
 132
 133         nv04_dfp_disable(dev, head);
 134
 135         if (nv_two_heads(dev))
 136                 nv04_tv_bind(dev, head ^ 1, false);
 137
 138         nv04_tv_bind(dev, head, true);
 139 }
 140
 141 static void nv04_tv_mode_set(struct drm_encoder *encoder,
 142                              struct drm_display_mode *mode,
 143                              struct drm_display_mode *adjusted_mode)
 144 {
 145         struct drm_device *dev = encoder->dev;
 146         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 147         struct nv04_crtc_reg *regp = &nv04_display(dev)->mode_reg.crtc_reg[nv_crtc->index];
 148
 149         regp->tv_htotal = adjusted_mode->htotal;
 150         regp->tv_vtotal = adjusted_mode->vtotal;
 151
 152         /* These delay the TV signals with respect to the VGA port,
 153          * they might be useful if we ever allow a CRTC to drive
 154          * multiple outputs.
 155          */
 156         regp->tv_hskew = 1;
 157         regp->tv_hsync_delay = 1;
 158         regp->tv_hsync_delay2 = 64;
 159         regp->tv_vskew = 1;
 160         regp->tv_vsync_delay = 1;
 161
 162         get_slave_funcs(encoder)->mode_set(encoder, mode, adjusted_mode);
 163 }
 164
 165 static void nv04_tv_commit(struct drm_encoder *encoder)
 166 {
 167         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 168         struct drm_device *dev = encoder->dev;
 169         struct nouveau_drm *drm = nouveau_drm(dev);
 170         struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 171         const struct drm_encoder_helper_funcs *helper = encoder->helper_private;
 172
 173         helper->dpms(encoder, DRM_MODE_DPMS_ON);
 174
 175         NV_DEBUG(drm, "Output %s is running on CRTC %d using output %c\n",
 176                  nouveau_encoder_connector_get(nv_encoder)->base.name,
 177                  nv_crtc->index, '@' + ffs(nv_encoder->dcb->or));
 178 }
 179
 180 static void nv04_tv_destroy(struct drm_encoder *encoder)
 181 {
 182         get_slave_funcs(encoder)->destroy(encoder);
 183         drm_encoder_cleanup(encoder);
 184
 185         kfree(encoder->helper_private);
 186         kfree(nouveau_encoder(encoder));
 187 }
 188
 189 static const struct drm_encoder_funcs nv04_tv_funcs = {
 190         .destroy = nv04_tv_destroy,
 191 };
 192
 193 static const struct drm_encoder_helper_funcs nv04_tv_helper_funcs = {
 194         .dpms = nv04_tv_dpms,
 195         .save = drm_i2c_encoder_save,
 196         .restore = drm_i2c_encoder_restore,
 197         .mode_fixup = drm_i2c_encoder_mode_fixup,
 198         .prepare = nv04_tv_prepare,
 199         .commit = nv04_tv_commit,
 200         .mode_set = nv04_tv_mode_set,
 201         .detect = drm_i2c_encoder_detect,
 202 };
 203
 204 int
 205 nv04_tv_create(struct drm_connector *connector, struct dcb_output *entry)
 206 {
 207         struct nouveau_encoder *nv_encoder;
 208         struct drm_encoder *encoder;
 209         struct drm_device *dev = connector->dev;
 210         struct nouveau_drm *drm = nouveau_drm(dev);
 211         struct nvkm_i2c *i2c = nvxx_i2c(&drm->device);
 212         struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, entry->i2c_index);
 213         int type, ret;
 214
 215         /* Ensure that we can talk to this encoder */
 216         type = nv04_tv_identify(dev, entry->i2c_index);
 217         if (type < 0)
 218                 return type;
 219
 220         /* Allocate the necessary memory */
 221         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 222         if (!nv_encoder)
 223                 return -ENOMEM;
 224
 225         /* Initialize the common members */
 226         encoder = to_drm_encoder(nv_encoder);
 227
 228         drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC);
 229         drm_encoder_helper_add(encoder, &nv04_tv_helper_funcs);
 230
 231         encoder->possible_crtcs = entry->heads;
 232         encoder->possible_clones = 0;
 233         nv_encoder->dcb = entry;
 234         nv_encoder->or = ffs(entry->or) - 1;
 235
 236         /* Run the slave-specific initialization */
 237         ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
 238                                    &bus->i2c,
 239                                    &nv04_tv_encoder_info[type].dev);
 240         if (ret < 0)
 241                 goto fail_cleanup;
 242
 243         /* Attach it to the specified connector. */
 244         get_slave_funcs(encoder)->create_resources(encoder, connector);
 245         drm_mode_connector_attach_encoder(connector, encoder);
 246
 247         return 0;
 248
 249 fail_cleanup:
 250         drm_encoder_cleanup(encoder);
 251         kfree(nv_encoder);
 252         return ret;
 253 }