blob: 856ab5dec18b4e874e1787082b0f684f2d70dbf2 [file] [log] [blame]
Chris Wilson1d8e1c72010-08-07 11:01:28 +01001/*
2 * Copyright © 2006-2010 Intel Corporation
3 * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Eric Anholt <eric@anholt.net>
26 * Dave Airlie <airlied@linux.ie>
27 * Jesse Barnes <jesse.barnes@intel.com>
28 * Chris Wilson <chris@chris-wilson.co.uk>
29 */
30
Joe Perchesa70491c2012-03-18 13:00:11 -070031#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32
Carsten Emde7bd90902012-03-15 15:56:25 +010033#include <linux/moduleparam.h>
Chris Wilson1d8e1c72010-08-07 11:01:28 +010034#include "intel_drv.h"
35
Takashi Iwaiba3820a2011-03-10 14:02:12 +010036#define PCI_LBPC 0xf4 /* legacy/combination backlight modes */
37
Chris Wilson1d8e1c72010-08-07 11:01:28 +010038void
39intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
40 struct drm_display_mode *adjusted_mode)
41{
42 adjusted_mode->hdisplay = fixed_mode->hdisplay;
43 adjusted_mode->hsync_start = fixed_mode->hsync_start;
44 adjusted_mode->hsync_end = fixed_mode->hsync_end;
45 adjusted_mode->htotal = fixed_mode->htotal;
46
47 adjusted_mode->vdisplay = fixed_mode->vdisplay;
48 adjusted_mode->vsync_start = fixed_mode->vsync_start;
49 adjusted_mode->vsync_end = fixed_mode->vsync_end;
50 adjusted_mode->vtotal = fixed_mode->vtotal;
51
52 adjusted_mode->clock = fixed_mode->clock;
Chris Wilson1d8e1c72010-08-07 11:01:28 +010053}
54
55/* adjusted_mode has been preset to be the panel's fixed mode */
56void
57intel_pch_panel_fitting(struct drm_device *dev,
58 int fitting_mode,
Daniel Vettercb1793c2012-06-04 18:39:21 +020059 const struct drm_display_mode *mode,
Chris Wilson1d8e1c72010-08-07 11:01:28 +010060 struct drm_display_mode *adjusted_mode)
61{
62 struct drm_i915_private *dev_priv = dev->dev_private;
63 int x, y, width, height;
64
65 x = y = width = height = 0;
66
67 /* Native modes don't need fitting */
68 if (adjusted_mode->hdisplay == mode->hdisplay &&
69 adjusted_mode->vdisplay == mode->vdisplay)
70 goto done;
71
72 switch (fitting_mode) {
73 case DRM_MODE_SCALE_CENTER:
74 width = mode->hdisplay;
75 height = mode->vdisplay;
76 x = (adjusted_mode->hdisplay - width + 1)/2;
77 y = (adjusted_mode->vdisplay - height + 1)/2;
78 break;
79
80 case DRM_MODE_SCALE_ASPECT:
81 /* Scale but preserve the aspect ratio */
82 {
83 u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
84 u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;
85 if (scaled_width > scaled_height) { /* pillar */
86 width = scaled_height / mode->vdisplay;
Adam Jackson302983e2011-07-13 16:32:32 -040087 if (width & 1)
Akshay Joshi0206e352011-08-16 15:34:10 -040088 width++;
Chris Wilson1d8e1c72010-08-07 11:01:28 +010089 x = (adjusted_mode->hdisplay - width + 1) / 2;
90 y = 0;
91 height = adjusted_mode->vdisplay;
92 } else if (scaled_width < scaled_height) { /* letter */
93 height = scaled_width / mode->hdisplay;
Adam Jackson302983e2011-07-13 16:32:32 -040094 if (height & 1)
95 height++;
Chris Wilson1d8e1c72010-08-07 11:01:28 +010096 y = (adjusted_mode->vdisplay - height + 1) / 2;
97 x = 0;
98 width = adjusted_mode->hdisplay;
99 } else {
100 x = y = 0;
101 width = adjusted_mode->hdisplay;
102 height = adjusted_mode->vdisplay;
103 }
104 }
105 break;
106
107 default:
108 case DRM_MODE_SCALE_FULLSCREEN:
109 x = y = 0;
110 width = adjusted_mode->hdisplay;
111 height = adjusted_mode->vdisplay;
112 break;
113 }
114
115done:
116 dev_priv->pch_pf_pos = (x << 16) | y;
117 dev_priv->pch_pf_size = (width << 16) | height;
118}
Chris Wilsona9573552010-08-22 13:18:16 +0100119
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100120static int is_backlight_combination_mode(struct drm_device *dev)
121{
122 struct drm_i915_private *dev_priv = dev->dev_private;
123
124 if (INTEL_INFO(dev)->gen >= 4)
125 return I915_READ(BLC_PWM_CTL2) & BLM_COMBINATION_MODE;
126
127 if (IS_GEN2(dev))
128 return I915_READ(BLC_PWM_CTL) & BLM_LEGACY_MODE;
129
130 return 0;
131}
132
Chris Wilson0b0b0532010-11-23 09:45:50 +0000133static u32 i915_read_blc_pwm_ctl(struct drm_i915_private *dev_priv)
134{
135 u32 val;
136
137 /* Restore the CTL value if it lost, e.g. GPU reset */
138
139 if (HAS_PCH_SPLIT(dev_priv->dev)) {
140 val = I915_READ(BLC_PWM_PCH_CTL2);
Daniel Vetterf4c956a2012-11-02 19:55:02 +0100141 if (dev_priv->regfile.saveBLC_PWM_CTL2 == 0) {
142 dev_priv->regfile.saveBLC_PWM_CTL2 = val;
Chris Wilson0b0b0532010-11-23 09:45:50 +0000143 } else if (val == 0) {
144 I915_WRITE(BLC_PWM_PCH_CTL2,
Daniel Vetterf4c956a2012-11-02 19:55:02 +0100145 dev_priv->regfile.saveBLC_PWM_CTL2);
146 val = dev_priv->regfile.saveBLC_PWM_CTL2;
Chris Wilson0b0b0532010-11-23 09:45:50 +0000147 }
148 } else {
149 val = I915_READ(BLC_PWM_CTL);
Daniel Vetterf4c956a2012-11-02 19:55:02 +0100150 if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
151 dev_priv->regfile.saveBLC_PWM_CTL = val;
152 dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2);
Chris Wilson0b0b0532010-11-23 09:45:50 +0000153 } else if (val == 0) {
154 I915_WRITE(BLC_PWM_CTL,
Daniel Vetterf4c956a2012-11-02 19:55:02 +0100155 dev_priv->regfile.saveBLC_PWM_CTL);
Chris Wilson0b0b0532010-11-23 09:45:50 +0000156 I915_WRITE(BLC_PWM_CTL2,
Daniel Vetterf4c956a2012-11-02 19:55:02 +0100157 dev_priv->regfile.saveBLC_PWM_CTL2);
158 val = dev_priv->regfile.saveBLC_PWM_CTL;
Chris Wilson0b0b0532010-11-23 09:45:50 +0000159 }
160 }
161
162 return val;
163}
164
Jani Nikula28dcc2d2012-09-03 16:25:12 +0300165static u32 _intel_panel_get_max_backlight(struct drm_device *dev)
Chris Wilsona9573552010-08-22 13:18:16 +0100166{
167 struct drm_i915_private *dev_priv = dev->dev_private;
168 u32 max;
169
Chris Wilson0b0b0532010-11-23 09:45:50 +0000170 max = i915_read_blc_pwm_ctl(dev_priv);
Chris Wilson0b0b0532010-11-23 09:45:50 +0000171
Chris Wilsona9573552010-08-22 13:18:16 +0100172 if (HAS_PCH_SPLIT(dev)) {
Chris Wilson0b0b0532010-11-23 09:45:50 +0000173 max >>= 16;
Chris Wilsona9573552010-08-22 13:18:16 +0100174 } else {
Keith Packardca884792011-11-18 11:09:24 -0800175 if (INTEL_INFO(dev)->gen < 4)
Chris Wilsona9573552010-08-22 13:18:16 +0100176 max >>= 17;
Keith Packardca884792011-11-18 11:09:24 -0800177 else
Chris Wilsona9573552010-08-22 13:18:16 +0100178 max >>= 16;
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100179
180 if (is_backlight_combination_mode(dev))
181 max *= 0xff;
Chris Wilsona9573552010-08-22 13:18:16 +0100182 }
183
Jani Nikula28dcc2d2012-09-03 16:25:12 +0300184 return max;
185}
186
187u32 intel_panel_get_max_backlight(struct drm_device *dev)
188{
189 u32 max;
190
191 max = _intel_panel_get_max_backlight(dev);
192 if (max == 0) {
193 /* XXX add code here to query mode clock or hardware clock
194 * and program max PWM appropriately.
195 */
196 pr_warn_once("fixme: max PWM is zero\n");
197 return 1;
198 }
199
Chris Wilsona9573552010-08-22 13:18:16 +0100200 DRM_DEBUG_DRIVER("max backlight PWM = %d\n", max);
201 return max;
202}
203
Carsten Emde4dca20e2012-03-15 15:56:26 +0100204static int i915_panel_invert_brightness;
205MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness "
206 "(-1 force normal, 0 machine defaults, 1 force inversion), please "
Carsten Emde7bd90902012-03-15 15:56:25 +0100207 "report PCI device ID, subsystem vendor and subsystem device ID "
208 "to dri-devel@lists.freedesktop.org, if your machine needs it. "
209 "It will then be included in an upcoming module version.");
Carsten Emde4dca20e2012-03-15 15:56:26 +0100210module_param_named(invert_brightness, i915_panel_invert_brightness, int, 0600);
Carsten Emde7bd90902012-03-15 15:56:25 +0100211static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val)
212{
Carsten Emde4dca20e2012-03-15 15:56:26 +0100213 struct drm_i915_private *dev_priv = dev->dev_private;
214
215 if (i915_panel_invert_brightness < 0)
216 return val;
217
218 if (i915_panel_invert_brightness > 0 ||
219 dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS)
Carsten Emde7bd90902012-03-15 15:56:25 +0100220 return intel_panel_get_max_backlight(dev) - val;
221
222 return val;
223}
224
Stéphane Marchesinfaea35d2012-07-30 13:51:38 -0700225static u32 intel_panel_get_backlight(struct drm_device *dev)
Chris Wilsona9573552010-08-22 13:18:16 +0100226{
227 struct drm_i915_private *dev_priv = dev->dev_private;
228 u32 val;
229
230 if (HAS_PCH_SPLIT(dev)) {
231 val = I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
232 } else {
233 val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
Keith Packardca884792011-11-18 11:09:24 -0800234 if (INTEL_INFO(dev)->gen < 4)
Chris Wilsona9573552010-08-22 13:18:16 +0100235 val >>= 1;
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100236
Akshay Joshi0206e352011-08-16 15:34:10 -0400237 if (is_backlight_combination_mode(dev)) {
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100238 u8 lbpc;
239
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100240 pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
241 val *= lbpc;
242 }
Chris Wilsona9573552010-08-22 13:18:16 +0100243 }
244
Carsten Emde7bd90902012-03-15 15:56:25 +0100245 val = intel_panel_compute_brightness(dev, val);
Chris Wilsona9573552010-08-22 13:18:16 +0100246 DRM_DEBUG_DRIVER("get backlight PWM = %d\n", val);
247 return val;
248}
249
250static void intel_pch_panel_set_backlight(struct drm_device *dev, u32 level)
251{
252 struct drm_i915_private *dev_priv = dev->dev_private;
253 u32 val = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
254 I915_WRITE(BLC_PWM_CPU_CTL, val | level);
255}
256
Takashi Iwaif52c6192011-10-14 11:45:40 +0200257static void intel_panel_actually_set_backlight(struct drm_device *dev, u32 level)
Chris Wilsona9573552010-08-22 13:18:16 +0100258{
259 struct drm_i915_private *dev_priv = dev->dev_private;
260 u32 tmp;
261
262 DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level);
Carsten Emde7bd90902012-03-15 15:56:25 +0100263 level = intel_panel_compute_brightness(dev, level);
Chris Wilsona9573552010-08-22 13:18:16 +0100264
265 if (HAS_PCH_SPLIT(dev))
266 return intel_pch_panel_set_backlight(dev, level);
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100267
Akshay Joshi0206e352011-08-16 15:34:10 -0400268 if (is_backlight_combination_mode(dev)) {
Takashi Iwaiba3820a2011-03-10 14:02:12 +0100269 u32 max = intel_panel_get_max_backlight(dev);
270 u8 lbpc;
271
272 lbpc = level * 0xfe / max + 1;
273 level /= lbpc;
274 pci_write_config_byte(dev->pdev, PCI_LBPC, lbpc);
275 }
276
Chris Wilsona9573552010-08-22 13:18:16 +0100277 tmp = I915_READ(BLC_PWM_CTL);
Keith Packardca884792011-11-18 11:09:24 -0800278 if (INTEL_INFO(dev)->gen < 4)
Chris Wilsona9573552010-08-22 13:18:16 +0100279 level <<= 1;
Keith Packardca884792011-11-18 11:09:24 -0800280 tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
Chris Wilsona9573552010-08-22 13:18:16 +0100281 I915_WRITE(BLC_PWM_CTL, tmp | level);
282}
Chris Wilson47356eb2011-01-11 17:06:04 +0000283
Takashi Iwaif52c6192011-10-14 11:45:40 +0200284void intel_panel_set_backlight(struct drm_device *dev, u32 level)
285{
286 struct drm_i915_private *dev_priv = dev->dev_private;
287
288 dev_priv->backlight_level = level;
289 if (dev_priv->backlight_enabled)
290 intel_panel_actually_set_backlight(dev, level);
291}
292
Chris Wilson47356eb2011-01-11 17:06:04 +0000293void intel_panel_disable_backlight(struct drm_device *dev)
294{
295 struct drm_i915_private *dev_priv = dev->dev_private;
296
Takashi Iwaif52c6192011-10-14 11:45:40 +0200297 dev_priv->backlight_enabled = false;
298 intel_panel_actually_set_backlight(dev, 0);
Daniel Vetter24ded202012-06-05 12:14:54 +0200299
300 if (INTEL_INFO(dev)->gen >= 4) {
Paulo Zanonia4f32fc2012-07-14 11:57:12 -0300301 uint32_t reg, tmp;
Daniel Vetter24ded202012-06-05 12:14:54 +0200302
303 reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2;
304
305 I915_WRITE(reg, I915_READ(reg) & ~BLM_PWM_ENABLE);
Paulo Zanonia4f32fc2012-07-14 11:57:12 -0300306
307 if (HAS_PCH_SPLIT(dev)) {
308 tmp = I915_READ(BLC_PWM_PCH_CTL1);
309 tmp &= ~BLM_PCH_PWM_ENABLE;
310 I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
311 }
Daniel Vetter24ded202012-06-05 12:14:54 +0200312 }
Chris Wilson47356eb2011-01-11 17:06:04 +0000313}
314
Daniel Vetter24ded202012-06-05 12:14:54 +0200315void intel_panel_enable_backlight(struct drm_device *dev,
316 enum pipe pipe)
Chris Wilson47356eb2011-01-11 17:06:04 +0000317{
318 struct drm_i915_private *dev_priv = dev->dev_private;
319
320 if (dev_priv->backlight_level == 0)
321 dev_priv->backlight_level = intel_panel_get_max_backlight(dev);
322
Daniel Vetter24ded202012-06-05 12:14:54 +0200323 if (INTEL_INFO(dev)->gen >= 4) {
324 uint32_t reg, tmp;
325
326 reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2;
327
328
329 tmp = I915_READ(reg);
330
331 /* Note that this can also get called through dpms changes. And
332 * we don't track the backlight dpms state, hence check whether
333 * we have to do anything first. */
334 if (tmp & BLM_PWM_ENABLE)
Takashi Iwai770c1232012-08-11 08:56:42 +0200335 goto set_level;
Daniel Vetter24ded202012-06-05 12:14:54 +0200336
337 if (dev_priv->num_pipe == 3)
338 tmp &= ~BLM_PIPE_SELECT_IVB;
339 else
340 tmp &= ~BLM_PIPE_SELECT;
341
342 tmp |= BLM_PIPE(pipe);
343 tmp &= ~BLM_PWM_ENABLE;
344
345 I915_WRITE(reg, tmp);
346 POSTING_READ(reg);
347 I915_WRITE(reg, tmp | BLM_PWM_ENABLE);
Paulo Zanonia4f32fc2012-07-14 11:57:12 -0300348
349 if (HAS_PCH_SPLIT(dev)) {
350 tmp = I915_READ(BLC_PWM_PCH_CTL1);
351 tmp |= BLM_PCH_PWM_ENABLE;
352 tmp &= ~BLM_PCH_OVERRIDE_ENABLE;
353 I915_WRITE(BLC_PWM_PCH_CTL1, tmp);
354 }
Daniel Vetter24ded202012-06-05 12:14:54 +0200355 }
Takashi Iwai770c1232012-08-11 08:56:42 +0200356
357set_level:
358 /* Call below after setting BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1.
359 * BLC_PWM_CPU_CTL may be cleared to zero automatically when these
360 * registers are set.
361 */
362 dev_priv->backlight_enabled = true;
363 intel_panel_actually_set_backlight(dev, dev_priv->backlight_level);
Chris Wilson47356eb2011-01-11 17:06:04 +0000364}
365
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200366static void intel_panel_init_backlight(struct drm_device *dev)
Chris Wilson47356eb2011-01-11 17:06:04 +0000367{
368 struct drm_i915_private *dev_priv = dev->dev_private;
369
Indan Zupancicc8303e72011-01-12 11:59:19 +0000370 dev_priv->backlight_level = intel_panel_get_backlight(dev);
Chris Wilson47356eb2011-01-11 17:06:04 +0000371 dev_priv->backlight_enabled = dev_priv->backlight_level != 0;
372}
Chris Wilsonfe16d942011-02-12 10:29:38 +0000373
374enum drm_connector_status
375intel_panel_detect(struct drm_device *dev)
376{
Dave Airliebcd50232011-03-14 14:17:55 +1000377#if 0
Chris Wilsonfe16d942011-02-12 10:29:38 +0000378 struct drm_i915_private *dev_priv = dev->dev_private;
Dave Airliebcd50232011-03-14 14:17:55 +1000379#endif
Chris Wilsonfe16d942011-02-12 10:29:38 +0000380
Chris Wilsonfca87402011-02-17 13:44:48 +0000381 if (i915_panel_ignore_lid)
382 return i915_panel_ignore_lid > 0 ?
383 connector_status_connected :
384 connector_status_disconnected;
385
Dave Airliebcd50232011-03-14 14:17:55 +1000386 /* opregion lid state on HP 2540p is wrong at boot up,
387 * appears to be either the BIOS or Linux ACPI fault */
388#if 0
Chris Wilsonfe16d942011-02-12 10:29:38 +0000389 /* Assume that the BIOS does not lie through the OpRegion... */
390 if (dev_priv->opregion.lid_state)
391 return ioread32(dev_priv->opregion.lid_state) & 0x1 ?
392 connector_status_connected :
393 connector_status_disconnected;
Dave Airliebcd50232011-03-14 14:17:55 +1000394#endif
Chris Wilsonfe16d942011-02-12 10:29:38 +0000395
396 return connector_status_unknown;
397}
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200398
399#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
400static int intel_panel_update_status(struct backlight_device *bd)
401{
402 struct drm_device *dev = bl_get_data(bd);
403 intel_panel_set_backlight(dev, bd->props.brightness);
404 return 0;
405}
406
407static int intel_panel_get_brightness(struct backlight_device *bd)
408{
409 struct drm_device *dev = bl_get_data(bd);
Takashi Iwai04b38672011-11-16 10:58:03 +0100410 struct drm_i915_private *dev_priv = dev->dev_private;
411 return dev_priv->backlight_level;
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200412}
413
414static const struct backlight_ops intel_panel_bl_ops = {
415 .update_status = intel_panel_update_status,
416 .get_brightness = intel_panel_get_brightness,
417};
418
Jani Nikula0657b6b2012-10-19 14:51:46 +0300419int intel_panel_setup_backlight(struct drm_connector *connector)
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200420{
Jani Nikula0657b6b2012-10-19 14:51:46 +0300421 struct drm_device *dev = connector->dev;
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200422 struct drm_i915_private *dev_priv = dev->dev_private;
423 struct backlight_properties props;
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200424
425 intel_panel_init_backlight(dev);
426
Corentin Charyaf437cf2012-05-22 10:29:46 +0100427 memset(&props, 0, sizeof(props));
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200428 props.type = BACKLIGHT_RAW;
Jani Nikula28dcc2d2012-09-03 16:25:12 +0300429 props.max_brightness = _intel_panel_get_max_backlight(dev);
430 if (props.max_brightness == 0) {
431 DRM_ERROR("Failed to get maximum backlight value\n");
432 return -ENODEV;
433 }
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200434 dev_priv->backlight =
435 backlight_device_register("intel_backlight",
436 &connector->kdev, dev,
437 &intel_panel_bl_ops, &props);
438
439 if (IS_ERR(dev_priv->backlight)) {
440 DRM_ERROR("Failed to register backlight: %ld\n",
441 PTR_ERR(dev_priv->backlight));
442 dev_priv->backlight = NULL;
443 return -ENODEV;
444 }
445 dev_priv->backlight->props.brightness = intel_panel_get_backlight(dev);
446 return 0;
447}
448
449void intel_panel_destroy_backlight(struct drm_device *dev)
450{
451 struct drm_i915_private *dev_priv = dev->dev_private;
452 if (dev_priv->backlight)
453 backlight_device_unregister(dev_priv->backlight);
454}
455#else
Jani Nikula0657b6b2012-10-19 14:51:46 +0300456int intel_panel_setup_backlight(struct drm_connector *connector)
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200457{
Jani Nikula0657b6b2012-10-19 14:51:46 +0300458 intel_panel_init_backlight(connector->dev);
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200459 return 0;
460}
461
462void intel_panel_destroy_backlight(struct drm_device *dev)
463{
464 return;
465}
466#endif
Jani Nikula1d508702012-10-19 14:51:49 +0300467
Jani Nikuladd06f902012-10-19 14:51:50 +0300468int intel_panel_init(struct intel_panel *panel,
469 struct drm_display_mode *fixed_mode)
Jani Nikula1d508702012-10-19 14:51:49 +0300470{
Jani Nikuladd06f902012-10-19 14:51:50 +0300471 panel->fixed_mode = fixed_mode;
472
Jani Nikula1d508702012-10-19 14:51:49 +0300473 return 0;
474}
475
476void intel_panel_fini(struct intel_panel *panel)
477{
Jani Nikuladd06f902012-10-19 14:51:50 +0300478 struct intel_connector *intel_connector =
479 container_of(panel, struct intel_connector, panel);
480
481 if (panel->fixed_mode)
482 drm_mode_destroy(intel_connector->base.dev, panel->fixed_mode);
Jani Nikula1d508702012-10-19 14:51:49 +0300483}