1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
// SPDX-License-Identifier: GPL-2.0-only
/**************************************************************************
* Copyright (c) 2011, Intel Corporation.
* All Rights Reserved.
*
**************************************************************************/
#include <drm/drm.h>
#include <drm/drm_crtc_helper.h>
#include "gma_device.h"
#include "intel_bios.h"
#include "psb_device.h"
#include "psb_drv.h"
#include "psb_intel_reg.h"
#include "psb_reg.h"
static int psb_output_init(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
psb_intel_lvds_init(dev, &dev_priv->mode_dev);
psb_intel_sdvo_init(dev, SDVOB);
return 0;
}
/*
* Poulsbo Backlight Interfaces
*/
#define BLC_PWM_PRECISION_FACTOR 100 /* 10000000 */
#define BLC_PWM_FREQ_CALC_CONSTANT 32
#define MHz 1000000
#define PSB_BLC_PWM_PRECISION_FACTOR 10
#define PSB_BLC_MAX_PWM_REG_FREQ 0xFFFE
#define PSB_BLC_MIN_PWM_REG_FREQ 0x2
#define PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR (0xFFFE)
#define PSB_BACKLIGHT_PWM_CTL_SHIFT (16)
static int psb_backlight_setup(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
unsigned long core_clock;
/* u32 bl_max_freq; */
/* unsigned long value; */
u16 bl_max_freq;
uint32_t value;
uint32_t blc_pwm_precision_factor;
/* get bl_max_freq and pol from dev_priv*/
if (!dev_priv->lvds_bl) {
dev_err(dev->dev, "Has no valid LVDS backlight info\n");
return -ENOENT;
}
bl_max_freq = dev_priv->lvds_bl->freq;
blc_pwm_precision_factor = PSB_BLC_PWM_PRECISION_FACTOR;
core_clock = dev_priv->core_freq;
value = (core_clock * MHz) / BLC_PWM_FREQ_CALC_CONSTANT;
value *= blc_pwm_precision_factor;
value /= bl_max_freq;
value /= blc_pwm_precision_factor;
if (value > (unsigned long long)PSB_BLC_MAX_PWM_REG_FREQ ||
value < (unsigned long long)PSB_BLC_MIN_PWM_REG_FREQ)
return -ERANGE;
else {
value &= PSB_BACKLIGHT_PWM_POLARITY_BIT_CLEAR;
REG_WRITE(BLC_PWM_CTL,
(value << PSB_BACKLIGHT_PWM_CTL_SHIFT) | (value));
}
psb_intel_lvds_set_brightness(dev, PSB_MAX_BRIGHTNESS);
/* This must occur after the backlight is properly initialised */
psb_lid_timer_init(dev_priv);
return 0;
}
/*
* Provide the Poulsbo specific chip logic and low level methods
* for power management
*/
static void psb_init_pm(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
u32 gating = PSB_RSGX32(PSB_CR_CLKGATECTL);
gating &= ~3; /* Disable 2D clock gating */
gating |= 1;
PSB_WSGX32(gating, PSB_CR_CLKGATECTL);
PSB_RSGX32(PSB_CR_CLKGATECTL);
}
/**
* psb_save_display_registers - save registers lost on suspend
* @dev: our DRM device
*
* Save the state we need in order to be able to restore the interface
* upon resume from suspend
*/
static int psb_save_display_registers(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct gma_connector *gma_connector;
struct drm_crtc *crtc;
struct drm_connector_list_iter conn_iter;
struct drm_connector *connector;
struct psb_state *regs = &dev_priv->regs.psb;
/* Display arbitration control + watermarks */
regs->saveDSPARB = PSB_RVDC32(DSPARB);
regs->saveDSPFW1 = PSB_RVDC32(DSPFW1);
regs->saveDSPFW2 = PSB_RVDC32(DSPFW2);
regs->saveDSPFW3 = PSB_RVDC32(DSPFW3);
regs->saveDSPFW4 = PSB_RVDC32(DSPFW4);
regs->saveDSPFW5 = PSB_RVDC32(DSPFW5);
regs->saveDSPFW6 = PSB_RVDC32(DSPFW6);
regs->saveCHICKENBIT = PSB_RVDC32(DSPCHICKENBIT);
/* Save crtc and output state */
drm_modeset_lock_all(dev);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (drm_helper_crtc_in_use(crtc))
dev_priv->ops->save_crtc(crtc);
}
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
gma_connector = to_gma_connector(connector);
if (gma_connector->save)
gma_connector->save(connector);
}
drm_connector_list_iter_end(&conn_iter);
drm_modeset_unlock_all(dev);
return 0;
}
/**
* psb_restore_display_registers - restore lost register state
* @dev: our DRM device
*
* Restore register state that was lost during suspend and resume.
*/
static int psb_restore_display_registers(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct gma_connector *gma_connector;
struct drm_crtc *crtc;
struct drm_connector_list_iter conn_iter;
struct drm_connector *connector;
struct psb_state *regs = &dev_priv->regs.psb;
/* Display arbitration + watermarks */
PSB_WVDC32(regs->saveDSPARB, DSPARB);
PSB_WVDC32(regs->saveDSPFW1, DSPFW1);
PSB_WVDC32(regs->saveDSPFW2, DSPFW2);
PSB_WVDC32(regs->saveDSPFW3, DSPFW3);
PSB_WVDC32(regs->saveDSPFW4, DSPFW4);
PSB_WVDC32(regs->saveDSPFW5, DSPFW5);
PSB_WVDC32(regs->saveDSPFW6, DSPFW6);
PSB_WVDC32(regs->saveCHICKENBIT, DSPCHICKENBIT);
/*make sure VGA plane is off. it initializes to on after reset!*/
PSB_WVDC32(0x80000000, VGACNTRL);
drm_modeset_lock_all(dev);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
if (drm_helper_crtc_in_use(crtc))
dev_priv->ops->restore_crtc(crtc);
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
gma_connector = to_gma_connector(connector);
if (gma_connector->restore)
gma_connector->restore(connector);
}
drm_connector_list_iter_end(&conn_iter);
drm_modeset_unlock_all(dev);
return 0;
}
static int psb_power_down(struct drm_device *dev)
{
return 0;
}
static int psb_power_up(struct drm_device *dev)
{
return 0;
}
/* Poulsbo */
static const struct psb_offset psb_regmap[2] = {
{
.fp0 = FPA0,
.fp1 = FPA1,
.cntr = DSPACNTR,
.conf = PIPEACONF,
.src = PIPEASRC,
.dpll = DPLL_A,
.htotal = HTOTAL_A,
.hblank = HBLANK_A,
.hsync = HSYNC_A,
.vtotal = VTOTAL_A,
.vblank = VBLANK_A,
.vsync = VSYNC_A,
.stride = DSPASTRIDE,
.size = DSPASIZE,
.pos = DSPAPOS,
.base = DSPABASE,
.surf = DSPASURF,
.addr = DSPABASE,
.status = PIPEASTAT,
.linoff = DSPALINOFF,
.tileoff = DSPATILEOFF,
.palette = PALETTE_A,
},
{
.fp0 = FPB0,
.fp1 = FPB1,
.cntr = DSPBCNTR,
.conf = PIPEBCONF,
.src = PIPEBSRC,
.dpll = DPLL_B,
.htotal = HTOTAL_B,
.hblank = HBLANK_B,
.hsync = HSYNC_B,
.vtotal = VTOTAL_B,
.vblank = VBLANK_B,
.vsync = VSYNC_B,
.stride = DSPBSTRIDE,
.size = DSPBSIZE,
.pos = DSPBPOS,
.base = DSPBBASE,
.surf = DSPBSURF,
.addr = DSPBBASE,
.status = PIPEBSTAT,
.linoff = DSPBLINOFF,
.tileoff = DSPBTILEOFF,
.palette = PALETTE_B,
}
};
static int psb_chip_setup(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
dev_priv->regmap = psb_regmap;
gma_get_core_freq(dev);
gma_intel_setup_gmbus(dev);
psb_intel_opregion_init(dev);
psb_intel_init_bios(dev);
return 0;
}
static void psb_chip_teardown(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
psb_lid_timer_takedown(dev_priv);
gma_intel_teardown_gmbus(dev);
}
const struct psb_ops psb_chip_ops = {
.name = "Poulsbo",
.pipes = 2,
.crtcs = 2,
.hdmi_mask = (1 << 0),
.lvds_mask = (1 << 1),
.sdvo_mask = (1 << 0),
.cursor_needs_phys = 1,
.sgx_offset = PSB_SGX_OFFSET,
.chip_setup = psb_chip_setup,
.chip_teardown = psb_chip_teardown,
.crtc_helper = &psb_intel_helper_funcs,
.clock_funcs = &psb_clock_funcs,
.output_init = psb_output_init,
.backlight_init = psb_backlight_setup,
.backlight_set = psb_intel_lvds_set_brightness,
.backlight_name = "psb-bl",
.init_pm = psb_init_pm,
.save_regs = psb_save_display_registers,
.restore_regs = psb_restore_display_registers,
.save_crtc = gma_crtc_save,
.restore_crtc = gma_crtc_restore,
.power_down = psb_power_down,
.power_up = psb_power_up,
};
|
