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1/**************************************************************************
2 * Copyright (c) 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: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
18 **************************************************************************/
19
20#include <drm/drmP.h>
21#include "psb_drv.h"
22#include "psb_reg.h"
23#include "psb_intel_reg.h"
24#include <linux/spinlock.h>
25
26static void psb_lid_timer_func(unsigned long data)
27{
28 struct drm_psb_private * dev_priv = (struct drm_psb_private *)data;
29 struct drm_device *dev = (struct drm_device *)dev_priv->dev;
30 struct timer_list *lid_timer = &dev_priv->lid_timer;
31 unsigned long irq_flags;
32 u32 __iomem *lid_state = dev_priv->opregion.lid_state;
33 u32 pp_status;
34
35 if (readl(lid_state) == dev_priv->lid_last_state)
36 goto lid_timer_schedule;
37
38 if ((readl(lid_state)) & 0x01) {
39 /*lid state is open*/
40 REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) | POWER_TARGET_ON);
41 do {
42 pp_status = REG_READ(PP_STATUS);
43 } while ((pp_status & PP_ON) == 0 &&
44 (pp_status & PP_SEQUENCE_MASK) != 0);
45
46 if (REG_READ(PP_STATUS) & PP_ON) {
47 /*FIXME: should be backlight level before*/
48 psb_intel_lvds_set_brightness(dev, 100);
49 } else {
50 DRM_DEBUG("LVDS panel never powered up");
51 return;
52 }
53 } else {
54 psb_intel_lvds_set_brightness(dev, 0);
55
56 REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) & ~POWER_TARGET_ON);
57 do {
58 pp_status = REG_READ(PP_STATUS);
59 } while ((pp_status & PP_ON) == 0);
60 }
61 dev_priv->lid_last_state = readl(lid_state);
62
63lid_timer_schedule:
64 spin_lock_irqsave(&dev_priv->lid_lock, irq_flags);
65 if (!timer_pending(lid_timer)) {
66 lid_timer->expires = jiffies + PSB_LID_DELAY;
67 add_timer(lid_timer);
68 }
69 spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags);
70}
71
72void psb_lid_timer_init(struct drm_psb_private *dev_priv)
73{
74 struct timer_list *lid_timer = &dev_priv->lid_timer;
75 unsigned long irq_flags;
76
77 spin_lock_init(&dev_priv->lid_lock);
78 spin_lock_irqsave(&dev_priv->lid_lock, irq_flags);
79
80 init_timer(lid_timer);
81
82 lid_timer->data = (unsigned long)dev_priv;
83 lid_timer->function = psb_lid_timer_func;
84 lid_timer->expires = jiffies + PSB_LID_DELAY;
85
86 add_timer(lid_timer);
87 spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags);
88}
89
90void psb_lid_timer_takedown(struct drm_psb_private *dev_priv)
91{
92 del_timer_sync(&dev_priv->lid_timer);
93}
94
1// SPDX-License-Identifier: GPL-2.0-only
2/**************************************************************************
3 * Copyright (c) 2007, Intel Corporation.
4 *
5 * Authors: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
6 **************************************************************************/
7
8#include <linux/spinlock.h>
9
10#include "psb_drv.h"
11#include "psb_intel_reg.h"
12#include "psb_reg.h"
13
14static void psb_lid_timer_func(struct timer_list *t)
15{
16 struct drm_psb_private *dev_priv = from_timer(dev_priv, t, lid_timer);
17 struct drm_device *dev = (struct drm_device *)&dev_priv->dev;
18 struct timer_list *lid_timer = &dev_priv->lid_timer;
19 unsigned long irq_flags;
20 u32 __iomem *lid_state = dev_priv->opregion.lid_state;
21 u32 pp_status;
22
23 if (readl(lid_state) == dev_priv->lid_last_state)
24 goto lid_timer_schedule;
25
26 if ((readl(lid_state)) & 0x01) {
27 /*lid state is open*/
28 REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) | POWER_TARGET_ON);
29 do {
30 pp_status = REG_READ(PP_STATUS);
31 } while ((pp_status & PP_ON) == 0 &&
32 (pp_status & PP_SEQUENCE_MASK) != 0);
33
34 if (REG_READ(PP_STATUS) & PP_ON) {
35 /*FIXME: should be backlight level before*/
36 psb_intel_lvds_set_brightness(dev, 100);
37 } else {
38 DRM_DEBUG("LVDS panel never powered up");
39 return;
40 }
41 } else {
42 psb_intel_lvds_set_brightness(dev, 0);
43
44 REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) & ~POWER_TARGET_ON);
45 do {
46 pp_status = REG_READ(PP_STATUS);
47 } while ((pp_status & PP_ON) == 0);
48 }
49 dev_priv->lid_last_state = readl(lid_state);
50
51lid_timer_schedule:
52 spin_lock_irqsave(&dev_priv->lid_lock, irq_flags);
53 if (!timer_pending(lid_timer)) {
54 lid_timer->expires = jiffies + PSB_LID_DELAY;
55 add_timer(lid_timer);
56 }
57 spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags);
58}
59
60void psb_lid_timer_init(struct drm_psb_private *dev_priv)
61{
62 struct timer_list *lid_timer = &dev_priv->lid_timer;
63 unsigned long irq_flags;
64
65 spin_lock_init(&dev_priv->lid_lock);
66 spin_lock_irqsave(&dev_priv->lid_lock, irq_flags);
67
68 timer_setup(lid_timer, psb_lid_timer_func, 0);
69
70 lid_timer->expires = jiffies + PSB_LID_DELAY;
71
72 add_timer(lid_timer);
73 spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags);
74}
75
76void psb_lid_timer_takedown(struct drm_psb_private *dev_priv)
77{
78 del_timer_sync(&dev_priv->lid_timer);
79}
80