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30#include <drm/drmP.h>
31#include <drm/drm.h>
32#include <drm/drm_crtc.h>
33#include <drm/drm_edid.h>
34#include "psb_intel_drv.h"
35#include "psb_drv.h"
36#include "psb_intel_reg.h"
37#include "cdv_device.h"
38#include <linux/pm_runtime.h>
39
40
41#define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9)
42#define HDMI_BORDER_ENABLE (1 << 7)
43#define HDMI_AUDIO_ENABLE (1 << 6)
44#define HDMI_VSYNC_ACTIVE_HIGH (1 << 4)
45#define HDMI_HSYNC_ACTIVE_HIGH (1 << 3)
46
47#define HDMIB_PIPE_B_SELECT (1 << 30)
48
49
50struct mid_intel_hdmi_priv {
51 u32 hdmi_reg;
52 u32 save_HDMIB;
53 bool has_hdmi_sink;
54 bool has_hdmi_audio;
55
56 bool hdmi_device_connected;
57 struct mdfld_hdmi_i2c *i2c_bus;
58 struct i2c_adapter *hdmi_i2c_adapter;
59 struct drm_device *dev;
60};
61
62static void cdv_hdmi_mode_set(struct drm_encoder *encoder,
63 struct drm_display_mode *mode,
64 struct drm_display_mode *adjusted_mode)
65{
66 struct drm_device *dev = encoder->dev;
67 struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
68 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
69 u32 hdmib;
70 struct drm_crtc *crtc = encoder->crtc;
71 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
72
73 hdmib = (2 << 10);
74
75 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
76 hdmib |= HDMI_VSYNC_ACTIVE_HIGH;
77 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
78 hdmib |= HDMI_HSYNC_ACTIVE_HIGH;
79
80 if (gma_crtc->pipe == 1)
81 hdmib |= HDMIB_PIPE_B_SELECT;
82
83 if (hdmi_priv->has_hdmi_audio) {
84 hdmib |= HDMI_AUDIO_ENABLE;
85 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC;
86 }
87
88 REG_WRITE(hdmi_priv->hdmi_reg, hdmib);
89 REG_READ(hdmi_priv->hdmi_reg);
90}
91
92static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode)
93{
94 struct drm_device *dev = encoder->dev;
95 struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
96 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
97 u32 hdmib;
98
99 hdmib = REG_READ(hdmi_priv->hdmi_reg);
100
101 if (mode != DRM_MODE_DPMS_ON)
102 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN);
103 else
104 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN);
105 REG_READ(hdmi_priv->hdmi_reg);
106}
107
108static void cdv_hdmi_save(struct drm_connector *connector)
109{
110 struct drm_device *dev = connector->dev;
111 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
112 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
113
114 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg);
115}
116
117static void cdv_hdmi_restore(struct drm_connector *connector)
118{
119 struct drm_device *dev = connector->dev;
120 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
121 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
122
123 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB);
124 REG_READ(hdmi_priv->hdmi_reg);
125}
126
127static enum drm_connector_status cdv_hdmi_detect(
128 struct drm_connector *connector, bool force)
129{
130 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
131 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
132 struct edid *edid = NULL;
133 enum drm_connector_status status = connector_status_disconnected;
134
135 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter);
136
137 hdmi_priv->has_hdmi_sink = false;
138 hdmi_priv->has_hdmi_audio = false;
139 if (edid) {
140 if (edid->input & DRM_EDID_INPUT_DIGITAL) {
141 status = connector_status_connected;
142 hdmi_priv->has_hdmi_sink =
143 drm_detect_hdmi_monitor(edid);
144 hdmi_priv->has_hdmi_audio =
145 drm_detect_monitor_audio(edid);
146 }
147 kfree(edid);
148 }
149 return status;
150}
151
152static int cdv_hdmi_set_property(struct drm_connector *connector,
153 struct drm_property *property,
154 uint64_t value)
155{
156 struct drm_encoder *encoder = connector->encoder;
157
158 if (!strcmp(property->name, "scaling mode") && encoder) {
159 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);
160 bool centre;
161 uint64_t curValue;
162
163 if (!crtc)
164 return -1;
165
166 switch (value) {
167 case DRM_MODE_SCALE_FULLSCREEN:
168 break;
169 case DRM_MODE_SCALE_NO_SCALE:
170 break;
171 case DRM_MODE_SCALE_ASPECT:
172 break;
173 default:
174 return -1;
175 }
176
177 if (drm_object_property_get_value(&connector->base,
178 property, &curValue))
179 return -1;
180
181 if (curValue == value)
182 return 0;
183
184 if (drm_object_property_set_value(&connector->base,
185 property, value))
186 return -1;
187
188 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) ||
189 (value == DRM_MODE_SCALE_NO_SCALE);
190
191 if (crtc->saved_mode.hdisplay != 0 &&
192 crtc->saved_mode.vdisplay != 0) {
193 if (centre) {
194 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode,
195 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb))
196 return -1;
197 } else {
198 const struct drm_encoder_helper_funcs *helpers
199 = encoder->helper_private;
200 helpers->mode_set(encoder, &crtc->saved_mode,
201 &crtc->saved_adjusted_mode);
202 }
203 }
204 }
205 return 0;
206}
207
208
209
210
211static int cdv_hdmi_get_modes(struct drm_connector *connector)
212{
213 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
214 struct edid *edid = NULL;
215 int ret = 0;
216
217 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter);
218 if (edid) {
219 drm_mode_connector_update_edid_property(connector, edid);
220 ret = drm_add_edid_modes(connector, edid);
221 kfree(edid);
222 }
223 return ret;
224}
225
226static int cdv_hdmi_mode_valid(struct drm_connector *connector,
227 struct drm_display_mode *mode)
228{
229 if (mode->clock > 165000)
230 return MODE_CLOCK_HIGH;
231 if (mode->clock < 20000)
232 return MODE_CLOCK_HIGH;
233
234
235 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
236 return MODE_NO_DBLESCAN;
237
238
239 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
240 return MODE_NO_INTERLACE;
241
242 return MODE_OK;
243}
244
245static void cdv_hdmi_destroy(struct drm_connector *connector)
246{
247 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
248
249 psb_intel_i2c_destroy(gma_encoder->i2c_bus);
250 drm_connector_unregister(connector);
251 drm_connector_cleanup(connector);
252 kfree(connector);
253}
254
255static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = {
256 .dpms = cdv_hdmi_dpms,
257 .prepare = gma_encoder_prepare,
258 .mode_set = cdv_hdmi_mode_set,
259 .commit = gma_encoder_commit,
260};
261
262static const struct drm_connector_helper_funcs
263 cdv_hdmi_connector_helper_funcs = {
264 .get_modes = cdv_hdmi_get_modes,
265 .mode_valid = cdv_hdmi_mode_valid,
266 .best_encoder = gma_best_encoder,
267};
268
269static const struct drm_connector_funcs cdv_hdmi_connector_funcs = {
270 .dpms = drm_helper_connector_dpms,
271 .detect = cdv_hdmi_detect,
272 .fill_modes = drm_helper_probe_single_connector_modes,
273 .set_property = cdv_hdmi_set_property,
274 .destroy = cdv_hdmi_destroy,
275};
276
277void cdv_hdmi_init(struct drm_device *dev,
278 struct psb_intel_mode_device *mode_dev, int reg)
279{
280 struct gma_encoder *gma_encoder;
281 struct gma_connector *gma_connector;
282 struct drm_connector *connector;
283 struct drm_encoder *encoder;
284 struct mid_intel_hdmi_priv *hdmi_priv;
285 int ddc_bus;
286
287 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
288
289 if (!gma_encoder)
290 return;
291
292 gma_connector = kzalloc(sizeof(struct gma_connector),
293 GFP_KERNEL);
294
295 if (!gma_connector)
296 goto err_connector;
297
298 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);
299
300 if (!hdmi_priv)
301 goto err_priv;
302
303 connector = &gma_connector->base;
304 connector->polled = DRM_CONNECTOR_POLL_HPD;
305 gma_connector->save = cdv_hdmi_save;
306 gma_connector->restore = cdv_hdmi_restore;
307
308 encoder = &gma_encoder->base;
309 drm_connector_init(dev, connector,
310 &cdv_hdmi_connector_funcs,
311 DRM_MODE_CONNECTOR_DVID);
312
313 drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs,
314 DRM_MODE_ENCODER_TMDS, NULL);
315
316 gma_connector_attach_encoder(gma_connector, gma_encoder);
317 gma_encoder->type = INTEL_OUTPUT_HDMI;
318 hdmi_priv->hdmi_reg = reg;
319 hdmi_priv->has_hdmi_sink = false;
320 gma_encoder->dev_priv = hdmi_priv;
321
322 drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs);
323 drm_connector_helper_add(connector,
324 &cdv_hdmi_connector_helper_funcs);
325 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
326 connector->interlace_allowed = false;
327 connector->doublescan_allowed = false;
328
329 drm_object_attach_property(&connector->base,
330 dev->mode_config.scaling_mode_property,
331 DRM_MODE_SCALE_FULLSCREEN);
332
333 switch (reg) {
334 case SDVOB:
335 ddc_bus = GPIOE;
336 gma_encoder->ddi_select = DDI0_SELECT;
337 break;
338 case SDVOC:
339 ddc_bus = GPIOD;
340 gma_encoder->ddi_select = DDI1_SELECT;
341 break;
342 default:
343 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);
344 goto failed_ddc;
345 break;
346 }
347
348 gma_encoder->i2c_bus = psb_intel_i2c_create(dev,
349 ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC");
350
351 if (!gma_encoder->i2c_bus) {
352 dev_err(dev->dev, "No ddc adapter available!\n");
353 goto failed_ddc;
354 }
355
356 hdmi_priv->hdmi_i2c_adapter = &(gma_encoder->i2c_bus->adapter);
357 hdmi_priv->dev = dev;
358 drm_connector_register(connector);
359 return;
360
361failed_ddc:
362 drm_encoder_cleanup(encoder);
363 drm_connector_cleanup(connector);
364err_priv:
365 kfree(gma_connector);
366err_connector:
367 kfree(gma_encoder);
368}
369
