1 /*
2 * Copyright © 2006-2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * jim liu <jim.liu@intel.com>
25 */
26
27 #include <linux/pm_runtime.h>
28
29 #include <drm/drm.h>
30 #include <drm/drm_crtc.h>
31 #include <drm/drm_crtc_helper.h>
32 #include <drm/drm_edid.h>
33 #include <drm/drm_modeset_helper_vtables.h>
34 #include <drm/drm_simple_kms_helper.h>
35
36 #include "cdv_device.h"
37 #include "psb_drv.h"
38 #include "psb_intel_drv.h"
39 #include "psb_intel_reg.h"
40
41 /* hdmi control bits */
42 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9)
43 #define HDMI_BORDER_ENABLE (1 << 7)
44 #define HDMI_AUDIO_ENABLE (1 << 6)
45 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4)
46 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3)
47 /* hdmi-b control bits */
48 #define HDMIB_PIPE_B_SELECT (1 << 30)
49
50
51 struct mid_intel_hdmi_priv {
52 u32 hdmi_reg;
53 u32 save_HDMIB;
54 bool has_hdmi_sink;
55 bool has_hdmi_audio;
56 /* Should set this when detect hotplug */
57 bool hdmi_device_connected;
58 struct drm_device *dev;
59 };
60
cdv_hdmi_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)61 static void cdv_hdmi_mode_set(struct drm_encoder *encoder,
62 struct drm_display_mode *mode,
63 struct drm_display_mode *adjusted_mode)
64 {
65 struct drm_device *dev = encoder->dev;
66 struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
67 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
68 u32 hdmib;
69 struct drm_crtc *crtc = encoder->crtc;
70 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
71
72 hdmib = (2 << 10);
73
74 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
75 hdmib |= HDMI_VSYNC_ACTIVE_HIGH;
76 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
77 hdmib |= HDMI_HSYNC_ACTIVE_HIGH;
78
79 if (gma_crtc->pipe == 1)
80 hdmib |= HDMIB_PIPE_B_SELECT;
81
82 if (hdmi_priv->has_hdmi_audio) {
83 hdmib |= HDMI_AUDIO_ENABLE;
84 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC;
85 }
86
87 REG_WRITE(hdmi_priv->hdmi_reg, hdmib);
88 REG_READ(hdmi_priv->hdmi_reg);
89 }
90
cdv_hdmi_dpms(struct drm_encoder * encoder,int mode)91 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode)
92 {
93 struct drm_device *dev = encoder->dev;
94 struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
95 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
96 u32 hdmib;
97
98 hdmib = REG_READ(hdmi_priv->hdmi_reg);
99
100 if (mode != DRM_MODE_DPMS_ON)
101 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN);
102 else
103 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN);
104 REG_READ(hdmi_priv->hdmi_reg);
105 }
106
cdv_hdmi_save(struct drm_connector * connector)107 static void cdv_hdmi_save(struct drm_connector *connector)
108 {
109 struct drm_device *dev = connector->dev;
110 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
111 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
112
113 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg);
114 }
115
cdv_hdmi_restore(struct drm_connector * connector)116 static void cdv_hdmi_restore(struct drm_connector *connector)
117 {
118 struct drm_device *dev = connector->dev;
119 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
120 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
121
122 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB);
123 REG_READ(hdmi_priv->hdmi_reg);
124 }
125
cdv_hdmi_detect(struct drm_connector * connector,bool force)126 static enum drm_connector_status cdv_hdmi_detect(
127 struct drm_connector *connector, bool force)
128 {
129 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
130 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
131 struct edid *edid = NULL;
132 enum drm_connector_status status = connector_status_disconnected;
133
134 edid = drm_get_edid(connector, connector->ddc);
135
136 hdmi_priv->has_hdmi_sink = false;
137 hdmi_priv->has_hdmi_audio = false;
138 if (edid) {
139 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
140 status = connector_status_connected;
141 hdmi_priv->has_hdmi_sink =
142 drm_detect_hdmi_monitor(edid);
143 hdmi_priv->has_hdmi_audio =
144 drm_detect_monitor_audio(edid);
145 }
146 kfree(edid);
147 }
148 return status;
149 }
150
cdv_hdmi_set_property(struct drm_connector * connector,struct drm_property * property,uint64_t value)151 static int cdv_hdmi_set_property(struct drm_connector *connector,
152 struct drm_property *property,
153 uint64_t value)
154 {
155 struct drm_encoder *encoder = connector->encoder;
156
157 if (!strcmp(property->name, "scaling mode") && encoder) {
158 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);
159 bool centre;
160 uint64_t curValue;
161
162 if (!crtc)
163 return -1;
164
165 switch (value) {
166 case DRM_MODE_SCALE_FULLSCREEN:
167 break;
168 case DRM_MODE_SCALE_NO_SCALE:
169 break;
170 case DRM_MODE_SCALE_ASPECT:
171 break;
172 default:
173 return -1;
174 }
175
176 if (drm_object_property_get_value(&connector->base,
177 property, &curValue))
178 return -1;
179
180 if (curValue == value)
181 return 0;
182
183 if (drm_object_property_set_value(&connector->base,
184 property, value))
185 return -1;
186
187 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) ||
188 (value == DRM_MODE_SCALE_NO_SCALE);
189
190 if (crtc->saved_mode.hdisplay != 0 &&
191 crtc->saved_mode.vdisplay != 0) {
192 if (centre) {
193 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode,
194 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb))
195 return -1;
196 } else {
197 const struct drm_encoder_helper_funcs *helpers
198 = encoder->helper_private;
199 helpers->mode_set(encoder, &crtc->saved_mode,
200 &crtc->saved_adjusted_mode);
201 }
202 }
203 }
204 return 0;
205 }
206
207 /*
208 * Return the list of HDMI DDC modes if available.
209 */
cdv_hdmi_get_modes(struct drm_connector * connector)210 static int cdv_hdmi_get_modes(struct drm_connector *connector)
211 {
212 struct edid *edid = NULL;
213 int ret = 0;
214
215 edid = drm_get_edid(connector, connector->ddc);
216 if (edid) {
217 drm_connector_update_edid_property(connector, edid);
218 ret = drm_add_edid_modes(connector, edid);
219 kfree(edid);
220 }
221 return ret;
222 }
223
cdv_hdmi_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)224 static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector *connector,
225 struct drm_display_mode *mode)
226 {
227 if (mode->clock > 165000)
228 return MODE_CLOCK_HIGH;
229 if (mode->clock < 20000)
230 return MODE_CLOCK_HIGH;
231
232 /* just in case */
233 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
234 return MODE_NO_DBLESCAN;
235
236 /* just in case */
237 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
238 return MODE_NO_INTERLACE;
239
240 return MODE_OK;
241 }
242
cdv_hdmi_destroy(struct drm_connector * connector)243 static void cdv_hdmi_destroy(struct drm_connector *connector)
244 {
245 struct gma_connector *gma_connector = to_gma_connector(connector);
246 struct gma_i2c_chan *ddc_bus = to_gma_i2c_chan(connector->ddc);
247
248 gma_i2c_destroy(ddc_bus);
249 drm_connector_cleanup(connector);
250 kfree(gma_connector);
251 }
252
253 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = {
254 .dpms = cdv_hdmi_dpms,
255 .prepare = gma_encoder_prepare,
256 .mode_set = cdv_hdmi_mode_set,
257 .commit = gma_encoder_commit,
258 };
259
260 static const struct drm_connector_helper_funcs
261 cdv_hdmi_connector_helper_funcs = {
262 .get_modes = cdv_hdmi_get_modes,
263 .mode_valid = cdv_hdmi_mode_valid,
264 .best_encoder = gma_best_encoder,
265 };
266
267 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = {
268 .dpms = drm_helper_connector_dpms,
269 .detect = cdv_hdmi_detect,
270 .fill_modes = drm_helper_probe_single_connector_modes,
271 .set_property = cdv_hdmi_set_property,
272 .destroy = cdv_hdmi_destroy,
273 };
274
cdv_hdmi_init(struct drm_device * dev,struct psb_intel_mode_device * mode_dev,int reg)275 void cdv_hdmi_init(struct drm_device *dev,
276 struct psb_intel_mode_device *mode_dev, int reg)
277 {
278 struct gma_encoder *gma_encoder;
279 struct gma_connector *gma_connector;
280 struct drm_connector *connector;
281 struct mid_intel_hdmi_priv *hdmi_priv;
282 struct gma_i2c_chan *ddc_bus;
283 int ddc_reg;
284 int ret;
285
286 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
287 if (!gma_encoder)
288 return;
289
290 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);
291 if (!gma_connector)
292 goto err_free_encoder;
293
294 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);
295 if (!hdmi_priv)
296 goto err_free_connector;
297
298 connector = &gma_connector->base;
299 connector->polled = DRM_CONNECTOR_POLL_HPD;
300 gma_connector->save = cdv_hdmi_save;
301 gma_connector->restore = cdv_hdmi_restore;
302
303 switch (reg) {
304 case SDVOB:
305 ddc_reg = GPIOE;
306 gma_encoder->ddi_select = DDI0_SELECT;
307 break;
308 case SDVOC:
309 ddc_reg = GPIOD;
310 gma_encoder->ddi_select = DDI1_SELECT;
311 break;
312 default:
313 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);
314 goto err_free_hdmi_priv;
315 }
316
317 ddc_bus = gma_i2c_create(dev, ddc_reg,
318 (reg == SDVOB) ? "HDMIB" : "HDMIC");
319 if (!ddc_bus) {
320 dev_err(dev->dev, "No ddc adapter available!\n");
321 goto err_free_hdmi_priv;
322 }
323
324 ret = drm_connector_init_with_ddc(dev, connector,
325 &cdv_hdmi_connector_funcs,
326 DRM_MODE_CONNECTOR_DVID,
327 &ddc_bus->base);
328 if (ret)
329 goto err_ddc_destroy;
330
331 ret = drm_simple_encoder_init(dev, &gma_encoder->base,
332 DRM_MODE_ENCODER_TMDS);
333 if (ret)
334 goto err_connector_cleanup;
335
336 gma_connector_attach_encoder(gma_connector, gma_encoder);
337 gma_encoder->type = INTEL_OUTPUT_HDMI;
338 hdmi_priv->hdmi_reg = reg;
339 hdmi_priv->has_hdmi_sink = false;
340 gma_encoder->dev_priv = hdmi_priv;
341
342 drm_encoder_helper_add(&gma_encoder->base, &cdv_hdmi_helper_funcs);
343 drm_connector_helper_add(connector,
344 &cdv_hdmi_connector_helper_funcs);
345 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
346 connector->interlace_allowed = false;
347 connector->doublescan_allowed = false;
348
349 drm_object_attach_property(&connector->base,
350 dev->mode_config.scaling_mode_property,
351 DRM_MODE_SCALE_FULLSCREEN);
352
353 hdmi_priv->dev = dev;
354 return;
355
356 err_connector_cleanup:
357 drm_connector_cleanup(connector);
358 err_ddc_destroy:
359 gma_i2c_destroy(ddc_bus);
360 err_free_hdmi_priv:
361 kfree(hdmi_priv);
362 err_free_connector:
363 kfree(gma_connector);
364 err_free_encoder:
365 kfree(gma_encoder);
366 }
367