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89c78134 AC |
1 | /* |
2 | * Copyright © 2006-2007 Intel Corporation | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | * | |
17 | * Authors: | |
18 | * Eric Anholt <eric@anholt.net> | |
19 | * Dave Airlie <airlied@linux.ie> | |
20 | * Jesse Barnes <jesse.barnes@intel.com> | |
21 | */ | |
22 | ||
23 | #include <linux/i2c.h> | |
24 | #include <drm/drmP.h> | |
25 | ||
26 | #include "intel_bios.h" | |
27 | #include "psb_drv.h" | |
28 | #include "psb_intel_drv.h" | |
29 | #include "psb_intel_reg.h" | |
30 | #include "power.h" | |
31 | #include <linux/pm_runtime.h> | |
32 | ||
33 | /* | |
34 | * LVDS I2C backlight control macros | |
35 | */ | |
36 | #define BRIGHTNESS_MAX_LEVEL 100 | |
37 | #define BRIGHTNESS_MASK 0xFF | |
38 | #define BLC_I2C_TYPE 0x01 | |
39 | #define BLC_PWM_TYPT 0x02 | |
40 | ||
41 | #define BLC_POLARITY_NORMAL 0 | |
42 | #define BLC_POLARITY_INVERSE 1 | |
43 | ||
44 | #define PSB_BLC_MAX_PWM_REG_FREQ (0xFFFE) | |
45 | #define PSB_BLC_MIN_PWM_REG_FREQ (0x2) | |
46 | #define PSB_BLC_PWM_PRECISION_FACTOR (10) | |
47 | #define PSB_BACKLIGHT_PWM_CTL_SHIFT (16) | |
48 | #define PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR (0xFFFE) | |
49 | ||
50 | struct psb_intel_lvds_priv { | |
51 | /* | |
52 | * Saved LVDO output states | |
53 | */ | |
54 | uint32_t savePP_ON; | |
55 | uint32_t savePP_OFF; | |
56 | uint32_t saveLVDS; | |
57 | uint32_t savePP_CONTROL; | |
58 | uint32_t savePP_CYCLE; | |
59 | uint32_t savePFIT_CONTROL; | |
60 | uint32_t savePFIT_PGM_RATIOS; | |
61 | uint32_t saveBLC_PWM_CTL; | |
9c8cee47 PJ |
62 | |
63 | struct psb_intel_i2c_chan *i2c_bus; | |
64 | struct psb_intel_i2c_chan *ddc_bus; | |
89c78134 AC |
65 | }; |
66 | ||
67 | ||
68 | /* | |
69 | * Returns the maximum level of the backlight duty cycle field. | |
70 | */ | |
71 | static u32 psb_intel_lvds_get_max_backlight(struct drm_device *dev) | |
72 | { | |
73 | struct drm_psb_private *dev_priv = dev->dev_private; | |
1f0d0b51 | 74 | u32 ret; |
89c78134 AC |
75 | |
76 | if (gma_power_begin(dev, false)) { | |
1f0d0b51 | 77 | ret = REG_READ(BLC_PWM_CTL); |
89c78134 | 78 | gma_power_end(dev); |
1f0d0b51 | 79 | } else /* Powered off, use the saved value */ |
648a8e34 | 80 | ret = dev_priv->regs.saveBLC_PWM_CTL; |
1f0d0b51 AC |
81 | |
82 | /* Top 15bits hold the frequency mask */ | |
83 | ret = (ret & BACKLIGHT_MODULATION_FREQ_MASK) >> | |
84 | BACKLIGHT_MODULATION_FREQ_SHIFT; | |
85 | ||
86 | ret *= 2; /* Return a 16bit range as needed for setting */ | |
87 | if (ret == 0) | |
88 | dev_err(dev->dev, "BL bug: Reg %08x save %08X\n", | |
648a8e34 | 89 | REG_READ(BLC_PWM_CTL), dev_priv->regs.saveBLC_PWM_CTL); |
1f0d0b51 | 90 | return ret; |
89c78134 AC |
91 | } |
92 | ||
93 | /* | |
94 | * Set LVDS backlight level by I2C command | |
95 | * | |
96 | * FIXME: at some point we need to both track this for PM and also | |
97 | * disable runtime pm on MRST if the brightness is nil (ie blanked) | |
98 | */ | |
99 | static int psb_lvds_i2c_set_brightness(struct drm_device *dev, | |
100 | unsigned int level) | |
101 | { | |
102 | struct drm_psb_private *dev_priv = | |
103 | (struct drm_psb_private *)dev->dev_private; | |
104 | ||
105 | struct psb_intel_i2c_chan *lvds_i2c_bus = dev_priv->lvds_i2c_bus; | |
106 | u8 out_buf[2]; | |
107 | unsigned int blc_i2c_brightness; | |
108 | ||
109 | struct i2c_msg msgs[] = { | |
110 | { | |
111 | .addr = lvds_i2c_bus->slave_addr, | |
112 | .flags = 0, | |
113 | .len = 2, | |
114 | .buf = out_buf, | |
115 | } | |
116 | }; | |
117 | ||
118 | blc_i2c_brightness = BRIGHTNESS_MASK & ((unsigned int)level * | |
119 | BRIGHTNESS_MASK / | |
120 | BRIGHTNESS_MAX_LEVEL); | |
121 | ||
122 | if (dev_priv->lvds_bl->pol == BLC_POLARITY_INVERSE) | |
123 | blc_i2c_brightness = BRIGHTNESS_MASK - blc_i2c_brightness; | |
124 | ||
125 | out_buf[0] = dev_priv->lvds_bl->brightnesscmd; | |
126 | out_buf[1] = (u8)blc_i2c_brightness; | |
127 | ||
128 | if (i2c_transfer(&lvds_i2c_bus->adapter, msgs, 1) == 1) { | |
129 | dev_dbg(dev->dev, "I2C set brightness.(command, value) (%d, %d)\n", | |
130 | dev_priv->lvds_bl->brightnesscmd, | |
131 | blc_i2c_brightness); | |
132 | return 0; | |
133 | } | |
134 | ||
135 | dev_err(dev->dev, "I2C transfer error\n"); | |
136 | return -1; | |
137 | } | |
138 | ||
139 | ||
140 | static int psb_lvds_pwm_set_brightness(struct drm_device *dev, int level) | |
141 | { | |
142 | struct drm_psb_private *dev_priv = | |
143 | (struct drm_psb_private *)dev->dev_private; | |
144 | ||
145 | u32 max_pwm_blc; | |
146 | u32 blc_pwm_duty_cycle; | |
147 | ||
148 | max_pwm_blc = psb_intel_lvds_get_max_backlight(dev); | |
149 | ||
150 | /*BLC_PWM_CTL Should be initiated while backlight device init*/ | |
1f0d0b51 | 151 | BUG_ON(max_pwm_blc == 0); |
89c78134 AC |
152 | |
153 | blc_pwm_duty_cycle = level * max_pwm_blc / BRIGHTNESS_MAX_LEVEL; | |
154 | ||
155 | if (dev_priv->lvds_bl->pol == BLC_POLARITY_INVERSE) | |
156 | blc_pwm_duty_cycle = max_pwm_blc - blc_pwm_duty_cycle; | |
157 | ||
158 | blc_pwm_duty_cycle &= PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR; | |
159 | REG_WRITE(BLC_PWM_CTL, | |
160 | (max_pwm_blc << PSB_BACKLIGHT_PWM_CTL_SHIFT) | | |
161 | (blc_pwm_duty_cycle)); | |
162 | ||
1f0d0b51 AC |
163 | dev_info(dev->dev, "Backlight lvds set brightness %08x\n", |
164 | (max_pwm_blc << PSB_BACKLIGHT_PWM_CTL_SHIFT) | | |
165 | (blc_pwm_duty_cycle)); | |
166 | ||
89c78134 AC |
167 | return 0; |
168 | } | |
169 | ||
170 | /* | |
171 | * Set LVDS backlight level either by I2C or PWM | |
172 | */ | |
173 | void psb_intel_lvds_set_brightness(struct drm_device *dev, int level) | |
174 | { | |
1f0d0b51 | 175 | struct drm_psb_private *dev_priv = dev->dev_private; |
89c78134 AC |
176 | |
177 | dev_dbg(dev->dev, "backlight level is %d\n", level); | |
178 | ||
179 | if (!dev_priv->lvds_bl) { | |
1f0d0b51 | 180 | dev_err(dev->dev, "NO LVDS backlight info\n"); |
89c78134 AC |
181 | return; |
182 | } | |
183 | ||
184 | if (dev_priv->lvds_bl->type == BLC_I2C_TYPE) | |
185 | psb_lvds_i2c_set_brightness(dev, level); | |
186 | else | |
187 | psb_lvds_pwm_set_brightness(dev, level); | |
188 | } | |
189 | ||
190 | /* | |
191 | * Sets the backlight level. | |
192 | * | |
193 | * level: backlight level, from 0 to psb_intel_lvds_get_max_backlight(). | |
194 | */ | |
195 | static void psb_intel_lvds_set_backlight(struct drm_device *dev, int level) | |
196 | { | |
197 | struct drm_psb_private *dev_priv = dev->dev_private; | |
198 | u32 blc_pwm_ctl; | |
199 | ||
200 | if (gma_power_begin(dev, false)) { | |
1f0d0b51 AC |
201 | blc_pwm_ctl = REG_READ(BLC_PWM_CTL); |
202 | blc_pwm_ctl &= ~BACKLIGHT_DUTY_CYCLE_MASK; | |
89c78134 AC |
203 | REG_WRITE(BLC_PWM_CTL, |
204 | (blc_pwm_ctl | | |
205 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT))); | |
648a8e34 | 206 | dev_priv->regs.saveBLC_PWM_CTL = (blc_pwm_ctl | |
1f0d0b51 | 207 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT)); |
89c78134 AC |
208 | gma_power_end(dev); |
209 | } else { | |
648a8e34 | 210 | blc_pwm_ctl = dev_priv->regs.saveBLC_PWM_CTL & |
89c78134 | 211 | ~BACKLIGHT_DUTY_CYCLE_MASK; |
648a8e34 | 212 | dev_priv->regs.saveBLC_PWM_CTL = (blc_pwm_ctl | |
89c78134 AC |
213 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT)); |
214 | } | |
215 | } | |
216 | ||
217 | /* | |
218 | * Sets the power state for the panel. | |
219 | */ | |
9c8cee47 | 220 | static void psb_intel_lvds_set_power(struct drm_device *dev, bool on) |
89c78134 | 221 | { |
9c8cee47 PJ |
222 | struct drm_psb_private *dev_priv = dev->dev_private; |
223 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
89c78134 AC |
224 | u32 pp_status; |
225 | ||
1f0d0b51 AC |
226 | if (!gma_power_begin(dev, true)) { |
227 | dev_err(dev->dev, "set power, chip off!\n"); | |
89c78134 | 228 | return; |
1f0d0b51 AC |
229 | } |
230 | ||
89c78134 AC |
231 | if (on) { |
232 | REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) | | |
233 | POWER_TARGET_ON); | |
234 | do { | |
235 | pp_status = REG_READ(PP_STATUS); | |
236 | } while ((pp_status & PP_ON) == 0); | |
237 | ||
238 | psb_intel_lvds_set_backlight(dev, | |
9c8cee47 | 239 | mode_dev->backlight_duty_cycle); |
89c78134 AC |
240 | } else { |
241 | psb_intel_lvds_set_backlight(dev, 0); | |
242 | ||
243 | REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) & | |
244 | ~POWER_TARGET_ON); | |
245 | do { | |
246 | pp_status = REG_READ(PP_STATUS); | |
247 | } while (pp_status & PP_ON); | |
248 | } | |
249 | ||
250 | gma_power_end(dev); | |
251 | } | |
252 | ||
253 | static void psb_intel_lvds_encoder_dpms(struct drm_encoder *encoder, int mode) | |
254 | { | |
255 | struct drm_device *dev = encoder->dev; | |
89c78134 AC |
256 | |
257 | if (mode == DRM_MODE_DPMS_ON) | |
9c8cee47 | 258 | psb_intel_lvds_set_power(dev, true); |
89c78134 | 259 | else |
9c8cee47 | 260 | psb_intel_lvds_set_power(dev, false); |
89c78134 AC |
261 | |
262 | /* XXX: We never power down the LVDS pairs. */ | |
263 | } | |
264 | ||
265 | static void psb_intel_lvds_save(struct drm_connector *connector) | |
266 | { | |
267 | struct drm_device *dev = connector->dev; | |
268 | struct drm_psb_private *dev_priv = | |
269 | (struct drm_psb_private *)dev->dev_private; | |
367e4408 | 270 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
89c78134 | 271 | struct psb_intel_lvds_priv *lvds_priv = |
367e4408 | 272 | (struct psb_intel_lvds_priv *)gma_encoder->dev_priv; |
89c78134 AC |
273 | |
274 | lvds_priv->savePP_ON = REG_READ(LVDSPP_ON); | |
275 | lvds_priv->savePP_OFF = REG_READ(LVDSPP_OFF); | |
276 | lvds_priv->saveLVDS = REG_READ(LVDS); | |
277 | lvds_priv->savePP_CONTROL = REG_READ(PP_CONTROL); | |
278 | lvds_priv->savePP_CYCLE = REG_READ(PP_CYCLE); | |
279 | /*lvds_priv->savePP_DIVISOR = REG_READ(PP_DIVISOR);*/ | |
280 | lvds_priv->saveBLC_PWM_CTL = REG_READ(BLC_PWM_CTL); | |
281 | lvds_priv->savePFIT_CONTROL = REG_READ(PFIT_CONTROL); | |
282 | lvds_priv->savePFIT_PGM_RATIOS = REG_READ(PFIT_PGM_RATIOS); | |
283 | ||
284 | /*TODO: move backlight_duty_cycle to psb_intel_lvds_priv*/ | |
648a8e34 | 285 | dev_priv->backlight_duty_cycle = (dev_priv->regs.saveBLC_PWM_CTL & |
89c78134 AC |
286 | BACKLIGHT_DUTY_CYCLE_MASK); |
287 | ||
288 | /* | |
289 | * If the light is off at server startup, | |
290 | * just make it full brightness | |
291 | */ | |
292 | if (dev_priv->backlight_duty_cycle == 0) | |
293 | dev_priv->backlight_duty_cycle = | |
294 | psb_intel_lvds_get_max_backlight(dev); | |
295 | ||
296 | dev_dbg(dev->dev, "(0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n", | |
297 | lvds_priv->savePP_ON, | |
298 | lvds_priv->savePP_OFF, | |
299 | lvds_priv->saveLVDS, | |
300 | lvds_priv->savePP_CONTROL, | |
301 | lvds_priv->savePP_CYCLE, | |
302 | lvds_priv->saveBLC_PWM_CTL); | |
303 | } | |
304 | ||
305 | static void psb_intel_lvds_restore(struct drm_connector *connector) | |
306 | { | |
307 | struct drm_device *dev = connector->dev; | |
308 | u32 pp_status; | |
367e4408 | 309 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
89c78134 | 310 | struct psb_intel_lvds_priv *lvds_priv = |
367e4408 | 311 | (struct psb_intel_lvds_priv *)gma_encoder->dev_priv; |
89c78134 AC |
312 | |
313 | dev_dbg(dev->dev, "(0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n", | |
314 | lvds_priv->savePP_ON, | |
315 | lvds_priv->savePP_OFF, | |
316 | lvds_priv->saveLVDS, | |
317 | lvds_priv->savePP_CONTROL, | |
318 | lvds_priv->savePP_CYCLE, | |
319 | lvds_priv->saveBLC_PWM_CTL); | |
320 | ||
321 | REG_WRITE(BLC_PWM_CTL, lvds_priv->saveBLC_PWM_CTL); | |
322 | REG_WRITE(PFIT_CONTROL, lvds_priv->savePFIT_CONTROL); | |
323 | REG_WRITE(PFIT_PGM_RATIOS, lvds_priv->savePFIT_PGM_RATIOS); | |
324 | REG_WRITE(LVDSPP_ON, lvds_priv->savePP_ON); | |
325 | REG_WRITE(LVDSPP_OFF, lvds_priv->savePP_OFF); | |
326 | /*REG_WRITE(PP_DIVISOR, lvds_priv->savePP_DIVISOR);*/ | |
327 | REG_WRITE(PP_CYCLE, lvds_priv->savePP_CYCLE); | |
328 | REG_WRITE(PP_CONTROL, lvds_priv->savePP_CONTROL); | |
329 | REG_WRITE(LVDS, lvds_priv->saveLVDS); | |
330 | ||
331 | if (lvds_priv->savePP_CONTROL & POWER_TARGET_ON) { | |
332 | REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) | | |
333 | POWER_TARGET_ON); | |
334 | do { | |
335 | pp_status = REG_READ(PP_STATUS); | |
336 | } while ((pp_status & PP_ON) == 0); | |
337 | } else { | |
338 | REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) & | |
339 | ~POWER_TARGET_ON); | |
340 | do { | |
341 | pp_status = REG_READ(PP_STATUS); | |
342 | } while (pp_status & PP_ON); | |
343 | } | |
344 | } | |
345 | ||
346 | int psb_intel_lvds_mode_valid(struct drm_connector *connector, | |
347 | struct drm_display_mode *mode) | |
348 | { | |
9c8cee47 | 349 | struct drm_psb_private *dev_priv = connector->dev->dev_private; |
367e4408 | 350 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
89c78134 | 351 | struct drm_display_mode *fixed_mode = |
9c8cee47 | 352 | dev_priv->mode_dev.panel_fixed_mode; |
89c78134 | 353 | |
367e4408 | 354 | if (gma_encoder->type == INTEL_OUTPUT_MIPI2) |
9c8cee47 | 355 | fixed_mode = dev_priv->mode_dev.panel_fixed_mode2; |
89c78134 AC |
356 | |
357 | /* just in case */ | |
358 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) | |
359 | return MODE_NO_DBLESCAN; | |
360 | ||
361 | /* just in case */ | |
362 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) | |
363 | return MODE_NO_INTERLACE; | |
364 | ||
365 | if (fixed_mode) { | |
366 | if (mode->hdisplay > fixed_mode->hdisplay) | |
367 | return MODE_PANEL; | |
368 | if (mode->vdisplay > fixed_mode->vdisplay) | |
369 | return MODE_PANEL; | |
370 | } | |
371 | return MODE_OK; | |
372 | } | |
373 | ||
374 | bool psb_intel_lvds_mode_fixup(struct drm_encoder *encoder, | |
e811f5ae | 375 | const struct drm_display_mode *mode, |
89c78134 AC |
376 | struct drm_display_mode *adjusted_mode) |
377 | { | |
89c78134 | 378 | struct drm_device *dev = encoder->dev; |
9c8cee47 PJ |
379 | struct drm_psb_private *dev_priv = dev->dev_private; |
380 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
6306865d | 381 | struct gma_crtc *gma_crtc = to_gma_crtc(encoder->crtc); |
89c78134 AC |
382 | struct drm_encoder *tmp_encoder; |
383 | struct drm_display_mode *panel_fixed_mode = mode_dev->panel_fixed_mode; | |
367e4408 | 384 | struct gma_encoder *gma_encoder = to_gma_encoder(encoder); |
89c78134 | 385 | |
367e4408 | 386 | if (gma_encoder->type == INTEL_OUTPUT_MIPI2) |
89c78134 AC |
387 | panel_fixed_mode = mode_dev->panel_fixed_mode2; |
388 | ||
89c78134 | 389 | /* PSB requires the LVDS is on pipe B, MRST has only one pipe anyway */ |
6306865d | 390 | if (!IS_MRST(dev) && gma_crtc->pipe == 0) { |
89c78134 AC |
391 | printk(KERN_ERR "Can't support LVDS on pipe A\n"); |
392 | return false; | |
393 | } | |
6306865d | 394 | if (IS_MRST(dev) && gma_crtc->pipe != 0) { |
89c78134 AC |
395 | printk(KERN_ERR "Must use PIPE A\n"); |
396 | return false; | |
397 | } | |
398 | /* Should never happen!! */ | |
399 | list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, | |
400 | head) { | |
401 | if (tmp_encoder != encoder | |
402 | && tmp_encoder->crtc == encoder->crtc) { | |
403 | printk(KERN_ERR "Can't enable LVDS and another " | |
404 | "encoder on the same pipe\n"); | |
405 | return false; | |
406 | } | |
407 | } | |
408 | ||
409 | /* | |
410 | * If we have timings from the BIOS for the panel, put them in | |
411 | * to the adjusted mode. The CRTC will be set up for this mode, | |
412 | * with the panel scaling set up to source from the H/VDisplay | |
413 | * of the original mode. | |
414 | */ | |
415 | if (panel_fixed_mode != NULL) { | |
416 | adjusted_mode->hdisplay = panel_fixed_mode->hdisplay; | |
417 | adjusted_mode->hsync_start = panel_fixed_mode->hsync_start; | |
418 | adjusted_mode->hsync_end = panel_fixed_mode->hsync_end; | |
419 | adjusted_mode->htotal = panel_fixed_mode->htotal; | |
420 | adjusted_mode->vdisplay = panel_fixed_mode->vdisplay; | |
421 | adjusted_mode->vsync_start = panel_fixed_mode->vsync_start; | |
422 | adjusted_mode->vsync_end = panel_fixed_mode->vsync_end; | |
423 | adjusted_mode->vtotal = panel_fixed_mode->vtotal; | |
424 | adjusted_mode->clock = panel_fixed_mode->clock; | |
425 | drm_mode_set_crtcinfo(adjusted_mode, | |
426 | CRTC_INTERLACE_HALVE_V); | |
427 | } | |
428 | ||
429 | /* | |
430 | * XXX: It would be nice to support lower refresh rates on the | |
431 | * panels to reduce power consumption, and perhaps match the | |
432 | * user's requested refresh rate. | |
433 | */ | |
434 | ||
435 | return true; | |
436 | } | |
437 | ||
438 | static void psb_intel_lvds_prepare(struct drm_encoder *encoder) | |
439 | { | |
440 | struct drm_device *dev = encoder->dev; | |
9c8cee47 PJ |
441 | struct drm_psb_private *dev_priv = dev->dev_private; |
442 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
89c78134 AC |
443 | |
444 | if (!gma_power_begin(dev, true)) | |
445 | return; | |
446 | ||
447 | mode_dev->saveBLC_PWM_CTL = REG_READ(BLC_PWM_CTL); | |
448 | mode_dev->backlight_duty_cycle = (mode_dev->saveBLC_PWM_CTL & | |
449 | BACKLIGHT_DUTY_CYCLE_MASK); | |
450 | ||
9c8cee47 | 451 | psb_intel_lvds_set_power(dev, false); |
89c78134 AC |
452 | |
453 | gma_power_end(dev); | |
454 | } | |
455 | ||
456 | static void psb_intel_lvds_commit(struct drm_encoder *encoder) | |
457 | { | |
458 | struct drm_device *dev = encoder->dev; | |
9c8cee47 PJ |
459 | struct drm_psb_private *dev_priv = dev->dev_private; |
460 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
89c78134 AC |
461 | |
462 | if (mode_dev->backlight_duty_cycle == 0) | |
463 | mode_dev->backlight_duty_cycle = | |
464 | psb_intel_lvds_get_max_backlight(dev); | |
465 | ||
9c8cee47 | 466 | psb_intel_lvds_set_power(dev, true); |
89c78134 AC |
467 | } |
468 | ||
469 | static void psb_intel_lvds_mode_set(struct drm_encoder *encoder, | |
470 | struct drm_display_mode *mode, | |
471 | struct drm_display_mode *adjusted_mode) | |
472 | { | |
473 | struct drm_device *dev = encoder->dev; | |
474 | struct drm_psb_private *dev_priv = dev->dev_private; | |
475 | u32 pfit_control; | |
476 | ||
477 | /* | |
478 | * The LVDS pin pair will already have been turned on in the | |
479 | * psb_intel_crtc_mode_set since it has a large impact on the DPLL | |
480 | * settings. | |
481 | */ | |
482 | ||
483 | /* | |
484 | * Enable automatic panel scaling so that non-native modes fill the | |
485 | * screen. Should be enabled before the pipe is enabled, according to | |
486 | * register description and PRM. | |
487 | */ | |
488 | if (mode->hdisplay != adjusted_mode->hdisplay || | |
489 | mode->vdisplay != adjusted_mode->vdisplay) | |
490 | pfit_control = (PFIT_ENABLE | VERT_AUTO_SCALE | | |
491 | HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR | | |
492 | HORIZ_INTERP_BILINEAR); | |
493 | else | |
494 | pfit_control = 0; | |
495 | ||
496 | if (dev_priv->lvds_dither) | |
497 | pfit_control |= PANEL_8TO6_DITHER_ENABLE; | |
498 | ||
499 | REG_WRITE(PFIT_CONTROL, pfit_control); | |
500 | } | |
501 | ||
502 | /* | |
503 | * Detect the LVDS connection. | |
504 | * | |
505 | * This always returns CONNECTOR_STATUS_CONNECTED. | |
506 | * This connector should only have | |
507 | * been set up if the LVDS was actually connected anyway. | |
508 | */ | |
509 | static enum drm_connector_status psb_intel_lvds_detect(struct drm_connector | |
510 | *connector, bool force) | |
511 | { | |
512 | return connector_status_connected; | |
513 | } | |
514 | ||
515 | /* | |
516 | * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. | |
517 | */ | |
518 | static int psb_intel_lvds_get_modes(struct drm_connector *connector) | |
519 | { | |
520 | struct drm_device *dev = connector->dev; | |
9c8cee47 PJ |
521 | struct drm_psb_private *dev_priv = dev->dev_private; |
522 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; | |
367e4408 PJ |
523 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
524 | struct psb_intel_lvds_priv *lvds_priv = gma_encoder->dev_priv; | |
89c78134 AC |
525 | int ret = 0; |
526 | ||
527 | if (!IS_MRST(dev)) | |
9c8cee47 | 528 | ret = psb_intel_ddc_get_modes(connector, &lvds_priv->i2c_bus->adapter); |
89c78134 AC |
529 | |
530 | if (ret) | |
531 | return ret; | |
532 | ||
533 | /* Didn't get an EDID, so | |
534 | * Set wide sync ranges so we get all modes | |
535 | * handed to valid_mode for checking | |
536 | */ | |
537 | connector->display_info.min_vfreq = 0; | |
538 | connector->display_info.max_vfreq = 200; | |
539 | connector->display_info.min_hfreq = 0; | |
540 | connector->display_info.max_hfreq = 200; | |
541 | ||
542 | if (mode_dev->panel_fixed_mode != NULL) { | |
543 | struct drm_display_mode *mode = | |
544 | drm_mode_duplicate(dev, mode_dev->panel_fixed_mode); | |
545 | drm_mode_probed_add(connector, mode); | |
546 | return 1; | |
547 | } | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
552 | /** | |
553 | * psb_intel_lvds_destroy - unregister and free LVDS structures | |
554 | * @connector: connector to free | |
555 | * | |
556 | * Unregister the DDC bus for this connector then free the driver private | |
557 | * structure. | |
558 | */ | |
559 | void psb_intel_lvds_destroy(struct drm_connector *connector) | |
560 | { | |
367e4408 PJ |
561 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
562 | struct psb_intel_lvds_priv *lvds_priv = gma_encoder->dev_priv; | |
89c78134 | 563 | |
44fb4b8a | 564 | psb_intel_i2c_destroy(lvds_priv->ddc_bus); |
34ea3d38 | 565 | drm_connector_unregister(connector); |
89c78134 AC |
566 | drm_connector_cleanup(connector); |
567 | kfree(connector); | |
568 | } | |
569 | ||
570 | int psb_intel_lvds_set_property(struct drm_connector *connector, | |
571 | struct drm_property *property, | |
572 | uint64_t value) | |
573 | { | |
574 | struct drm_encoder *encoder = connector->encoder; | |
575 | ||
576 | if (!encoder) | |
577 | return -1; | |
578 | ||
579 | if (!strcmp(property->name, "scaling mode")) { | |
6306865d | 580 | struct gma_crtc *crtc = to_gma_crtc(encoder->crtc); |
89c78134 AC |
581 | uint64_t curval; |
582 | ||
583 | if (!crtc) | |
584 | goto set_prop_error; | |
585 | ||
586 | switch (value) { | |
587 | case DRM_MODE_SCALE_FULLSCREEN: | |
588 | break; | |
589 | case DRM_MODE_SCALE_NO_SCALE: | |
590 | break; | |
591 | case DRM_MODE_SCALE_ASPECT: | |
592 | break; | |
593 | default: | |
594 | goto set_prop_error; | |
595 | } | |
596 | ||
a69ac9ea | 597 | if (drm_object_property_get_value(&connector->base, |
89c78134 AC |
598 | property, |
599 | &curval)) | |
600 | goto set_prop_error; | |
601 | ||
602 | if (curval == value) | |
603 | goto set_prop_done; | |
604 | ||
a69ac9ea | 605 | if (drm_object_property_set_value(&connector->base, |
89c78134 AC |
606 | property, |
607 | value)) | |
608 | goto set_prop_error; | |
609 | ||
610 | if (crtc->saved_mode.hdisplay != 0 && | |
611 | crtc->saved_mode.vdisplay != 0) { | |
612 | if (!drm_crtc_helper_set_mode(encoder->crtc, | |
613 | &crtc->saved_mode, | |
614 | encoder->crtc->x, | |
615 | encoder->crtc->y, | |
f4510a27 | 616 | encoder->crtc->primary->fb)) |
89c78134 AC |
617 | goto set_prop_error; |
618 | } | |
619 | } else if (!strcmp(property->name, "backlight")) { | |
a69ac9ea | 620 | if (drm_object_property_set_value(&connector->base, |
89c78134 AC |
621 | property, |
622 | value)) | |
623 | goto set_prop_error; | |
d112a816 ZY |
624 | else |
625 | gma_backlight_set(encoder->dev, value); | |
89c78134 | 626 | } else if (!strcmp(property->name, "DPMS")) { |
45fe734c | 627 | const struct drm_encoder_helper_funcs *hfuncs |
89c78134 AC |
628 | = encoder->helper_private; |
629 | hfuncs->dpms(encoder, value); | |
630 | } | |
631 | ||
632 | set_prop_done: | |
633 | return 0; | |
634 | set_prop_error: | |
635 | return -1; | |
636 | } | |
637 | ||
638 | static const struct drm_encoder_helper_funcs psb_intel_lvds_helper_funcs = { | |
639 | .dpms = psb_intel_lvds_encoder_dpms, | |
640 | .mode_fixup = psb_intel_lvds_mode_fixup, | |
641 | .prepare = psb_intel_lvds_prepare, | |
642 | .mode_set = psb_intel_lvds_mode_set, | |
643 | .commit = psb_intel_lvds_commit, | |
644 | }; | |
645 | ||
646 | const struct drm_connector_helper_funcs | |
647 | psb_intel_lvds_connector_helper_funcs = { | |
648 | .get_modes = psb_intel_lvds_get_modes, | |
649 | .mode_valid = psb_intel_lvds_mode_valid, | |
c9d49590 | 650 | .best_encoder = gma_best_encoder, |
89c78134 AC |
651 | }; |
652 | ||
653 | const struct drm_connector_funcs psb_intel_lvds_connector_funcs = { | |
654 | .dpms = drm_helper_connector_dpms, | |
89c78134 AC |
655 | .detect = psb_intel_lvds_detect, |
656 | .fill_modes = drm_helper_probe_single_connector_modes, | |
657 | .set_property = psb_intel_lvds_set_property, | |
658 | .destroy = psb_intel_lvds_destroy, | |
659 | }; | |
660 | ||
661 | ||
662 | static void psb_intel_lvds_enc_destroy(struct drm_encoder *encoder) | |
663 | { | |
664 | drm_encoder_cleanup(encoder); | |
665 | } | |
666 | ||
667 | const struct drm_encoder_funcs psb_intel_lvds_enc_funcs = { | |
668 | .destroy = psb_intel_lvds_enc_destroy, | |
669 | }; | |
670 | ||
671 | ||
672 | ||
673 | /** | |
674 | * psb_intel_lvds_init - setup LVDS connectors on this device | |
675 | * @dev: drm device | |
676 | * | |
677 | * Create the connector, register the LVDS DDC bus, and try to figure out what | |
678 | * modes we can display on the LVDS panel (if present). | |
679 | */ | |
680 | void psb_intel_lvds_init(struct drm_device *dev, | |
9c8cee47 | 681 | struct psb_intel_mode_device *mode_dev) |
89c78134 | 682 | { |
367e4408 | 683 | struct gma_encoder *gma_encoder; |
a3d5d75f | 684 | struct gma_connector *gma_connector; |
89c78134 AC |
685 | struct psb_intel_lvds_priv *lvds_priv; |
686 | struct drm_connector *connector; | |
687 | struct drm_encoder *encoder; | |
688 | struct drm_display_mode *scan; /* *modes, *bios_mode; */ | |
689 | struct drm_crtc *crtc; | |
1f0d0b51 | 690 | struct drm_psb_private *dev_priv = dev->dev_private; |
89c78134 AC |
691 | u32 lvds; |
692 | int pipe; | |
693 | ||
367e4408 PJ |
694 | gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); |
695 | if (!gma_encoder) { | |
696 | dev_err(dev->dev, "gma_encoder allocation error\n"); | |
89c78134 | 697 | return; |
9c8cee47 PJ |
698 | } |
699 | ||
a3d5d75f PJ |
700 | gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL); |
701 | if (!gma_connector) { | |
702 | dev_err(dev->dev, "gma_connector allocation error\n"); | |
aa7c62af | 703 | goto failed_encoder; |
9c8cee47 | 704 | } |
89c78134 AC |
705 | |
706 | lvds_priv = kzalloc(sizeof(struct psb_intel_lvds_priv), GFP_KERNEL); | |
707 | if (!lvds_priv) { | |
89c78134 | 708 | dev_err(dev->dev, "LVDS private allocation error\n"); |
9c8cee47 | 709 | goto failed_connector; |
89c78134 AC |
710 | } |
711 | ||
367e4408 | 712 | gma_encoder->dev_priv = lvds_priv; |
1f0d0b51 | 713 | |
a3d5d75f | 714 | connector = &gma_connector->base; |
d56f57ac DV |
715 | gma_connector->save = psb_intel_lvds_save; |
716 | gma_connector->restore = psb_intel_lvds_restore; | |
717 | ||
367e4408 | 718 | encoder = &gma_encoder->base; |
9c8cee47 | 719 | drm_connector_init(dev, connector, |
89c78134 AC |
720 | &psb_intel_lvds_connector_funcs, |
721 | DRM_MODE_CONNECTOR_LVDS); | |
722 | ||
9c8cee47 | 723 | drm_encoder_init(dev, encoder, |
89c78134 | 724 | &psb_intel_lvds_enc_funcs, |
13a3d91f | 725 | DRM_MODE_ENCODER_LVDS, NULL); |
89c78134 | 726 | |
367e4408 PJ |
727 | gma_connector_attach_encoder(gma_connector, gma_encoder); |
728 | gma_encoder->type = INTEL_OUTPUT_LVDS; | |
89c78134 AC |
729 | |
730 | drm_encoder_helper_add(encoder, &psb_intel_lvds_helper_funcs); | |
731 | drm_connector_helper_add(connector, | |
732 | &psb_intel_lvds_connector_helper_funcs); | |
733 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
734 | connector->interlace_allowed = false; | |
735 | connector->doublescan_allowed = false; | |
736 | ||
737 | /*Attach connector properties*/ | |
a69ac9ea | 738 | drm_object_attach_property(&connector->base, |
89c78134 AC |
739 | dev->mode_config.scaling_mode_property, |
740 | DRM_MODE_SCALE_FULLSCREEN); | |
a69ac9ea | 741 | drm_object_attach_property(&connector->base, |
89c78134 AC |
742 | dev_priv->backlight_property, |
743 | BRIGHTNESS_MAX_LEVEL); | |
744 | ||
745 | /* | |
746 | * Set up I2C bus | |
747 | * FIXME: distroy i2c_bus when exit | |
748 | */ | |
9c8cee47 PJ |
749 | lvds_priv->i2c_bus = psb_intel_i2c_create(dev, GPIOB, "LVDSBLC_B"); |
750 | if (!lvds_priv->i2c_bus) { | |
89c78134 AC |
751 | dev_printk(KERN_ERR, |
752 | &dev->pdev->dev, "I2C bus registration failed.\n"); | |
753 | goto failed_blc_i2c; | |
754 | } | |
9c8cee47 PJ |
755 | lvds_priv->i2c_bus->slave_addr = 0x2C; |
756 | dev_priv->lvds_i2c_bus = lvds_priv->i2c_bus; | |
89c78134 AC |
757 | |
758 | /* | |
759 | * LVDS discovery: | |
760 | * 1) check for EDID on DDC | |
761 | * 2) check for VBT data | |
762 | * 3) check to see if LVDS is already on | |
763 | * if none of the above, no panel | |
764 | * 4) make sure lid is open | |
765 | * if closed, act like it's not there for now | |
766 | */ | |
767 | ||
768 | /* Set up the DDC bus. */ | |
9c8cee47 PJ |
769 | lvds_priv->ddc_bus = psb_intel_i2c_create(dev, GPIOC, "LVDSDDC_C"); |
770 | if (!lvds_priv->ddc_bus) { | |
89c78134 AC |
771 | dev_printk(KERN_ERR, &dev->pdev->dev, |
772 | "DDC bus registration " "failed.\n"); | |
773 | goto failed_ddc; | |
774 | } | |
775 | ||
776 | /* | |
777 | * Attempt to get the fixed panel mode from DDC. Assume that the | |
778 | * preferred mode is the right one. | |
779 | */ | |
c46145ae | 780 | mutex_lock(&dev->mode_config.mutex); |
9c8cee47 | 781 | psb_intel_ddc_get_modes(connector, &lvds_priv->ddc_bus->adapter); |
89c78134 AC |
782 | list_for_each_entry(scan, &connector->probed_modes, head) { |
783 | if (scan->type & DRM_MODE_TYPE_PREFERRED) { | |
784 | mode_dev->panel_fixed_mode = | |
785 | drm_mode_duplicate(dev, scan); | |
786 | goto out; /* FIXME: check for quirks */ | |
787 | } | |
788 | } | |
789 | ||
790 | /* Failed to get EDID, what about VBT? do we need this? */ | |
791 | if (mode_dev->vbt_mode) | |
792 | mode_dev->panel_fixed_mode = | |
793 | drm_mode_duplicate(dev, mode_dev->vbt_mode); | |
794 | ||
795 | if (!mode_dev->panel_fixed_mode) | |
796 | if (dev_priv->lfp_lvds_vbt_mode) | |
797 | mode_dev->panel_fixed_mode = | |
798 | drm_mode_duplicate(dev, | |
799 | dev_priv->lfp_lvds_vbt_mode); | |
800 | ||
801 | /* | |
802 | * If we didn't get EDID, try checking if the panel is already turned | |
803 | * on. If so, assume that whatever is currently programmed is the | |
804 | * correct mode. | |
805 | */ | |
806 | lvds = REG_READ(LVDS); | |
807 | pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; | |
808 | crtc = psb_intel_get_crtc_from_pipe(dev, pipe); | |
809 | ||
810 | if (crtc && (lvds & LVDS_PORT_EN)) { | |
811 | mode_dev->panel_fixed_mode = | |
812 | psb_intel_crtc_mode_get(dev, crtc); | |
813 | if (mode_dev->panel_fixed_mode) { | |
814 | mode_dev->panel_fixed_mode->type |= | |
815 | DRM_MODE_TYPE_PREFERRED; | |
816 | goto out; /* FIXME: check for quirks */ | |
817 | } | |
818 | } | |
819 | ||
820 | /* If we still don't have a mode after all that, give up. */ | |
821 | if (!mode_dev->panel_fixed_mode) { | |
822 | dev_err(dev->dev, "Found no modes on the lvds, ignoring the LVDS\n"); | |
823 | goto failed_find; | |
824 | } | |
825 | ||
826 | /* | |
827 | * Blacklist machines with BIOSes that list an LVDS panel without | |
828 | * actually having one. | |
829 | */ | |
830 | out: | |
c46145ae | 831 | mutex_unlock(&dev->mode_config.mutex); |
34ea3d38 | 832 | drm_connector_register(connector); |
89c78134 AC |
833 | return; |
834 | ||
835 | failed_find: | |
c46145ae | 836 | mutex_unlock(&dev->mode_config.mutex); |
44fb4b8a | 837 | psb_intel_i2c_destroy(lvds_priv->ddc_bus); |
89c78134 | 838 | failed_ddc: |
44fb4b8a | 839 | psb_intel_i2c_destroy(lvds_priv->i2c_bus); |
89c78134 AC |
840 | failed_blc_i2c: |
841 | drm_encoder_cleanup(encoder); | |
842 | drm_connector_cleanup(connector); | |
9c8cee47 | 843 | failed_connector: |
a3d5d75f | 844 | kfree(gma_connector); |
aa7c62af | 845 | failed_encoder: |
367e4408 | 846 | kfree(gma_encoder); |
89c78134 AC |
847 | } |
848 |