1 /**************************************************************************
2 * Copyright (c) 2011, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 **************************************************************************/
20 #include <linux/backlight.h>
23 #include <drm/gma_drm.h>
26 #include "psb_intel_reg.h"
27 #include "intel_bios.h"
28 #include "cdv_device.h"
29 #include "gma_device.h"
31 #define VGA_SR_INDEX 0x3c4
32 #define VGA_SR_DATA 0x3c5
34 static void cdv_disable_vga(struct drm_device
*dev
)
41 outb(1, VGA_SR_INDEX
);
42 sr1
= inb(VGA_SR_DATA
);
43 outb(sr1
| 1<<5, VGA_SR_DATA
);
46 REG_WRITE(vga_reg
, VGA_DISP_DISABLE
);
50 static int cdv_output_init(struct drm_device
*dev
)
52 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
54 drm_mode_create_scaling_mode_property(dev
);
58 cdv_intel_crt_init(dev
, &dev_priv
->mode_dev
);
59 cdv_intel_lvds_init(dev
, &dev_priv
->mode_dev
);
61 /* These bits indicate HDMI not SDVO on CDV */
62 if (REG_READ(SDVOB
) & SDVO_DETECTED
) {
63 cdv_hdmi_init(dev
, &dev_priv
->mode_dev
, SDVOB
);
64 if (REG_READ(DP_B
) & DP_DETECTED
)
65 cdv_intel_dp_init(dev
, &dev_priv
->mode_dev
, DP_B
);
68 if (REG_READ(SDVOC
) & SDVO_DETECTED
) {
69 cdv_hdmi_init(dev
, &dev_priv
->mode_dev
, SDVOC
);
70 if (REG_READ(DP_C
) & DP_DETECTED
)
71 cdv_intel_dp_init(dev
, &dev_priv
->mode_dev
, DP_C
);
76 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
79 * Cedartrail Backlght Interfaces
82 static struct backlight_device
*cdv_backlight_device
;
84 static int cdv_backlight_combination_mode(struct drm_device
*dev
)
86 return REG_READ(BLC_PWM_CTL2
) & PWM_LEGACY_MODE
;
89 static u32
cdv_get_max_backlight(struct drm_device
*dev
)
91 u32 max
= REG_READ(BLC_PWM_CTL
);
94 DRM_DEBUG_KMS("LVDS Panel PWM value is 0!\n");
95 /* i915 does this, I believe which means that we should not
96 * smash PWM control as firmware will take control of it. */
101 if (cdv_backlight_combination_mode(dev
))
106 static int cdv_get_brightness(struct backlight_device
*bd
)
108 struct drm_device
*dev
= bl_get_data(bd
);
109 u32 val
= REG_READ(BLC_PWM_CTL
) & BACKLIGHT_DUTY_CYCLE_MASK
;
111 if (cdv_backlight_combination_mode(dev
)) {
115 pci_read_config_byte(dev
->pdev
, 0xF4, &lbpc
);
118 return (val
* 100)/cdv_get_max_backlight(dev
);
122 static int cdv_set_brightness(struct backlight_device
*bd
)
124 struct drm_device
*dev
= bl_get_data(bd
);
125 int level
= bd
->props
.brightness
;
128 /* Percentage 1-100% being valid */
132 level
*= cdv_get_max_backlight(dev
);
135 if (cdv_backlight_combination_mode(dev
)) {
136 u32 max
= cdv_get_max_backlight(dev
);
139 lbpc
= level
* 0xfe / max
+ 1;
142 pci_write_config_byte(dev
->pdev
, 0xF4, lbpc
);
145 blc_pwm_ctl
= REG_READ(BLC_PWM_CTL
) & ~BACKLIGHT_DUTY_CYCLE_MASK
;
146 REG_WRITE(BLC_PWM_CTL
, (blc_pwm_ctl
|
147 (level
<< BACKLIGHT_DUTY_CYCLE_SHIFT
)));
151 static const struct backlight_ops cdv_ops
= {
152 .get_brightness
= cdv_get_brightness
,
153 .update_status
= cdv_set_brightness
,
156 static int cdv_backlight_init(struct drm_device
*dev
)
158 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
159 struct backlight_properties props
;
161 memset(&props
, 0, sizeof(struct backlight_properties
));
162 props
.max_brightness
= 100;
163 props
.type
= BACKLIGHT_PLATFORM
;
165 cdv_backlight_device
= backlight_device_register("psb-bl",
166 NULL
, (void *)dev
, &cdv_ops
, &props
);
167 if (IS_ERR(cdv_backlight_device
))
168 return PTR_ERR(cdv_backlight_device
);
170 cdv_backlight_device
->props
.brightness
=
171 cdv_get_brightness(cdv_backlight_device
);
172 backlight_update_status(cdv_backlight_device
);
173 dev_priv
->backlight_device
= cdv_backlight_device
;
174 dev_priv
->backlight_enabled
= true;
181 * Provide the Cedarview specific chip logic and low level methods
182 * for power management
184 * FIXME: we need to implement the apm/ospm base management bits
185 * for this and the MID devices.
188 static inline u32
CDV_MSG_READ32(uint port
, uint offset
)
190 int mcr
= (0x10<<24) | (port
<< 16) | (offset
<< 8);
191 uint32_t ret_val
= 0;
192 struct pci_dev
*pci_root
= pci_get_bus_and_slot(0, 0);
193 pci_write_config_dword(pci_root
, 0xD0, mcr
);
194 pci_read_config_dword(pci_root
, 0xD4, &ret_val
);
195 pci_dev_put(pci_root
);
199 static inline void CDV_MSG_WRITE32(uint port
, uint offset
, u32 value
)
201 int mcr
= (0x11<<24) | (port
<< 16) | (offset
<< 8) | 0xF0;
202 struct pci_dev
*pci_root
= pci_get_bus_and_slot(0, 0);
203 pci_write_config_dword(pci_root
, 0xD4, value
);
204 pci_write_config_dword(pci_root
, 0xD0, mcr
);
205 pci_dev_put(pci_root
);
208 #define PSB_PM_SSC 0x20
209 #define PSB_PM_SSS 0x30
210 #define PSB_PWRGT_GFX_ON 0x02
211 #define PSB_PWRGT_GFX_OFF 0x01
212 #define PSB_PWRGT_GFX_D0 0x00
213 #define PSB_PWRGT_GFX_D3 0x03
215 static void cdv_init_pm(struct drm_device
*dev
)
217 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
221 dev_priv
->apm_base
= CDV_MSG_READ32(PSB_PUNIT_PORT
,
223 dev_priv
->ospm_base
= CDV_MSG_READ32(PSB_PUNIT_PORT
,
224 PSB_OSPMBA
) & 0xFFFF;
227 pwr_cnt
= inl(dev_priv
->apm_base
+ PSB_APM_CMD
);
230 pwr_cnt
&= ~PSB_PWRGT_GFX_MASK
;
231 pwr_cnt
|= PSB_PWRGT_GFX_ON
;
232 outl(pwr_cnt
, dev_priv
->apm_base
+ PSB_APM_CMD
);
234 /* Wait for the GPU power */
235 for (i
= 0; i
< 5; i
++) {
236 u32 pwr_sts
= inl(dev_priv
->apm_base
+ PSB_APM_STS
);
237 if ((pwr_sts
& PSB_PWRGT_GFX_MASK
) == 0)
241 dev_err(dev
->dev
, "GPU: power management timed out.\n");
244 static void cdv_errata(struct drm_device
*dev
)
246 /* Disable bonus launch.
247 * CPU and GPU competes for memory and display misses updates and
248 * flickers. Worst with dual core, dual displays.
250 * Fixes were done to Win 7 gfx driver to disable a feature called
251 * Bonus Launch to work around the issue, by degrading
254 CDV_MSG_WRITE32(3, 0x30, 0x08027108);
258 * cdv_save_display_registers - save registers lost on suspend
259 * @dev: our DRM device
261 * Save the state we need in order to be able to restore the interface
262 * upon resume from suspend
264 static int cdv_save_display_registers(struct drm_device
*dev
)
266 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
267 struct psb_save_area
*regs
= &dev_priv
->regs
;
268 struct drm_connector
*connector
;
270 dev_dbg(dev
->dev
, "Saving GPU registers.\n");
272 pci_read_config_byte(dev
->pdev
, 0xF4, ®s
->cdv
.saveLBB
);
274 regs
->cdv
.saveDSPCLK_GATE_D
= REG_READ(DSPCLK_GATE_D
);
275 regs
->cdv
.saveRAMCLK_GATE_D
= REG_READ(RAMCLK_GATE_D
);
277 regs
->cdv
.saveDSPARB
= REG_READ(DSPARB
);
278 regs
->cdv
.saveDSPFW
[0] = REG_READ(DSPFW1
);
279 regs
->cdv
.saveDSPFW
[1] = REG_READ(DSPFW2
);
280 regs
->cdv
.saveDSPFW
[2] = REG_READ(DSPFW3
);
281 regs
->cdv
.saveDSPFW
[3] = REG_READ(DSPFW4
);
282 regs
->cdv
.saveDSPFW
[4] = REG_READ(DSPFW5
);
283 regs
->cdv
.saveDSPFW
[5] = REG_READ(DSPFW6
);
285 regs
->cdv
.saveADPA
= REG_READ(ADPA
);
287 regs
->cdv
.savePP_CONTROL
= REG_READ(PP_CONTROL
);
288 regs
->cdv
.savePFIT_PGM_RATIOS
= REG_READ(PFIT_PGM_RATIOS
);
289 regs
->saveBLC_PWM_CTL
= REG_READ(BLC_PWM_CTL
);
290 regs
->saveBLC_PWM_CTL2
= REG_READ(BLC_PWM_CTL2
);
291 regs
->cdv
.saveLVDS
= REG_READ(LVDS
);
293 regs
->cdv
.savePFIT_CONTROL
= REG_READ(PFIT_CONTROL
);
295 regs
->cdv
.savePP_ON_DELAYS
= REG_READ(PP_ON_DELAYS
);
296 regs
->cdv
.savePP_OFF_DELAYS
= REG_READ(PP_OFF_DELAYS
);
297 regs
->cdv
.savePP_CYCLE
= REG_READ(PP_CYCLE
);
299 regs
->cdv
.saveVGACNTRL
= REG_READ(VGACNTRL
);
301 regs
->cdv
.saveIER
= REG_READ(PSB_INT_ENABLE_R
);
302 regs
->cdv
.saveIMR
= REG_READ(PSB_INT_MASK_R
);
304 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
305 connector
->funcs
->dpms(connector
, DRM_MODE_DPMS_OFF
);
311 * cdv_restore_display_registers - restore lost register state
312 * @dev: our DRM device
314 * Restore register state that was lost during suspend and resume.
318 static int cdv_restore_display_registers(struct drm_device
*dev
)
320 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
321 struct psb_save_area
*regs
= &dev_priv
->regs
;
322 struct drm_connector
*connector
;
325 pci_write_config_byte(dev
->pdev
, 0xF4, regs
->cdv
.saveLBB
);
327 REG_WRITE(DSPCLK_GATE_D
, regs
->cdv
.saveDSPCLK_GATE_D
);
328 REG_WRITE(RAMCLK_GATE_D
, regs
->cdv
.saveRAMCLK_GATE_D
);
330 /* BIOS does below anyway */
331 REG_WRITE(DPIO_CFG
, 0);
332 REG_WRITE(DPIO_CFG
, DPIO_MODE_SELECT_0
| DPIO_CMN_RESET_N
);
334 temp
= REG_READ(DPLL_A
);
335 if ((temp
& DPLL_SYNCLOCK_ENABLE
) == 0) {
336 REG_WRITE(DPLL_A
, temp
| DPLL_SYNCLOCK_ENABLE
);
340 temp
= REG_READ(DPLL_B
);
341 if ((temp
& DPLL_SYNCLOCK_ENABLE
) == 0) {
342 REG_WRITE(DPLL_B
, temp
| DPLL_SYNCLOCK_ENABLE
);
348 REG_WRITE(DSPFW1
, regs
->cdv
.saveDSPFW
[0]);
349 REG_WRITE(DSPFW2
, regs
->cdv
.saveDSPFW
[1]);
350 REG_WRITE(DSPFW3
, regs
->cdv
.saveDSPFW
[2]);
351 REG_WRITE(DSPFW4
, regs
->cdv
.saveDSPFW
[3]);
352 REG_WRITE(DSPFW5
, regs
->cdv
.saveDSPFW
[4]);
353 REG_WRITE(DSPFW6
, regs
->cdv
.saveDSPFW
[5]);
355 REG_WRITE(DSPARB
, regs
->cdv
.saveDSPARB
);
356 REG_WRITE(ADPA
, regs
->cdv
.saveADPA
);
358 REG_WRITE(BLC_PWM_CTL2
, regs
->saveBLC_PWM_CTL2
);
359 REG_WRITE(LVDS
, regs
->cdv
.saveLVDS
);
360 REG_WRITE(PFIT_CONTROL
, regs
->cdv
.savePFIT_CONTROL
);
361 REG_WRITE(PFIT_PGM_RATIOS
, regs
->cdv
.savePFIT_PGM_RATIOS
);
362 REG_WRITE(BLC_PWM_CTL
, regs
->saveBLC_PWM_CTL
);
363 REG_WRITE(PP_ON_DELAYS
, regs
->cdv
.savePP_ON_DELAYS
);
364 REG_WRITE(PP_OFF_DELAYS
, regs
->cdv
.savePP_OFF_DELAYS
);
365 REG_WRITE(PP_CYCLE
, regs
->cdv
.savePP_CYCLE
);
366 REG_WRITE(PP_CONTROL
, regs
->cdv
.savePP_CONTROL
);
368 REG_WRITE(VGACNTRL
, regs
->cdv
.saveVGACNTRL
);
370 REG_WRITE(PSB_INT_ENABLE_R
, regs
->cdv
.saveIER
);
371 REG_WRITE(PSB_INT_MASK_R
, regs
->cdv
.saveIMR
);
373 /* Fix arbitration bug */
376 drm_mode_config_reset(dev
);
378 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
)
379 connector
->funcs
->dpms(connector
, DRM_MODE_DPMS_ON
);
381 /* Resume the modeset for every activated CRTC */
382 drm_helper_resume_force_mode(dev
);
386 static int cdv_power_down(struct drm_device
*dev
)
388 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
389 u32 pwr_cnt
, pwr_mask
, pwr_sts
;
392 pwr_cnt
= inl(dev_priv
->apm_base
+ PSB_APM_CMD
);
393 pwr_cnt
&= ~PSB_PWRGT_GFX_MASK
;
394 pwr_cnt
|= PSB_PWRGT_GFX_OFF
;
395 pwr_mask
= PSB_PWRGT_GFX_MASK
;
397 outl(pwr_cnt
, dev_priv
->apm_base
+ PSB_APM_CMD
);
400 pwr_sts
= inl(dev_priv
->apm_base
+ PSB_APM_STS
);
401 if ((pwr_sts
& pwr_mask
) == PSB_PWRGT_GFX_D3
)
408 static int cdv_power_up(struct drm_device
*dev
)
410 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
411 u32 pwr_cnt
, pwr_mask
, pwr_sts
;
414 pwr_cnt
= inl(dev_priv
->apm_base
+ PSB_APM_CMD
);
415 pwr_cnt
&= ~PSB_PWRGT_GFX_MASK
;
416 pwr_cnt
|= PSB_PWRGT_GFX_ON
;
417 pwr_mask
= PSB_PWRGT_GFX_MASK
;
419 outl(pwr_cnt
, dev_priv
->apm_base
+ PSB_APM_CMD
);
422 pwr_sts
= inl(dev_priv
->apm_base
+ PSB_APM_STS
);
423 if ((pwr_sts
& pwr_mask
) == PSB_PWRGT_GFX_D0
)
430 static void cdv_hotplug_work_func(struct work_struct
*work
)
432 struct drm_psb_private
*dev_priv
= container_of(work
, struct drm_psb_private
,
434 struct drm_device
*dev
= dev_priv
->dev
;
436 /* Just fire off a uevent and let userspace tell us what to do */
437 drm_helper_hpd_irq_event(dev
);
440 /* The core driver has received a hotplug IRQ. We are in IRQ context
441 so extract the needed information and kick off queued processing */
443 static int cdv_hotplug_event(struct drm_device
*dev
)
445 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
446 schedule_work(&dev_priv
->hotplug_work
);
447 REG_WRITE(PORT_HOTPLUG_STAT
, REG_READ(PORT_HOTPLUG_STAT
));
451 static void cdv_hotplug_enable(struct drm_device
*dev
, bool on
)
454 u32 hotplug
= REG_READ(PORT_HOTPLUG_EN
);
455 hotplug
|= HDMIB_HOTPLUG_INT_EN
| HDMIC_HOTPLUG_INT_EN
|
456 HDMID_HOTPLUG_INT_EN
| CRT_HOTPLUG_INT_EN
;
457 REG_WRITE(PORT_HOTPLUG_EN
, hotplug
);
459 REG_WRITE(PORT_HOTPLUG_EN
, 0);
460 REG_WRITE(PORT_HOTPLUG_STAT
, REG_READ(PORT_HOTPLUG_STAT
));
464 static const char *force_audio_names
[] = {
470 void cdv_intel_attach_force_audio_property(struct drm_connector
*connector
)
472 struct drm_device
*dev
= connector
->dev
;
473 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
474 struct drm_property
*prop
;
477 prop
= dev_priv
->force_audio_property
;
479 prop
= drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
481 ARRAY_SIZE(force_audio_names
));
485 for (i
= 0; i
< ARRAY_SIZE(force_audio_names
); i
++)
486 drm_property_add_enum(prop
, i
, i
-1, force_audio_names
[i
]);
488 dev_priv
->force_audio_property
= prop
;
490 drm_object_attach_property(&connector
->base
, prop
, 0);
494 static const char *broadcast_rgb_names
[] = {
499 void cdv_intel_attach_broadcast_rgb_property(struct drm_connector
*connector
)
501 struct drm_device
*dev
= connector
->dev
;
502 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
503 struct drm_property
*prop
;
506 prop
= dev_priv
->broadcast_rgb_property
;
508 prop
= drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
510 ARRAY_SIZE(broadcast_rgb_names
));
514 for (i
= 0; i
< ARRAY_SIZE(broadcast_rgb_names
); i
++)
515 drm_property_add_enum(prop
, i
, i
, broadcast_rgb_names
[i
]);
517 dev_priv
->broadcast_rgb_property
= prop
;
520 drm_object_attach_property(&connector
->base
, prop
, 0);
524 static const struct psb_offset cdv_regmap
[2] = {
532 .dpll_md
= DPLL_A_MD
,
539 .stride
= DSPASTRIDE
,
546 .linoff
= DSPALINOFF
,
547 .tileoff
= DSPATILEOFF
,
548 .palette
= PALETTE_A
,
557 .dpll_md
= DPLL_B_MD
,
564 .stride
= DSPBSTRIDE
,
571 .linoff
= DSPBLINOFF
,
572 .tileoff
= DSPBTILEOFF
,
573 .palette
= PALETTE_B
,
577 static int cdv_chip_setup(struct drm_device
*dev
)
579 struct drm_psb_private
*dev_priv
= dev
->dev_private
;
580 INIT_WORK(&dev_priv
->hotplug_work
, cdv_hotplug_work_func
);
582 if (pci_enable_msi(dev
->pdev
))
583 dev_warn(dev
->dev
, "Enabling MSI failed!\n");
584 dev_priv
->regmap
= cdv_regmap
;
585 gma_get_core_freq(dev
);
586 psb_intel_opregion_init(dev
);
587 psb_intel_init_bios(dev
);
588 cdv_hotplug_enable(dev
, false);
592 /* CDV is much like Poulsbo but has MID like SGX offsets and PM */
594 const struct psb_ops cdv_chip_ops
= {
595 .name
= "GMA3600/3650",
599 .hdmi_mask
= (1 << 0) | (1 << 1),
600 .lvds_mask
= (1 << 1),
601 .sdvo_mask
= (1 << 0),
602 .cursor_needs_phys
= 0,
603 .sgx_offset
= MRST_SGX_OFFSET
,
604 .chip_setup
= cdv_chip_setup
,
605 .errata
= cdv_errata
,
607 .crtc_helper
= &cdv_intel_helper_funcs
,
608 .crtc_funcs
= &cdv_intel_crtc_funcs
,
609 .clock_funcs
= &cdv_clock_funcs
,
611 .output_init
= cdv_output_init
,
612 .hotplug
= cdv_hotplug_event
,
613 .hotplug_enable
= cdv_hotplug_enable
,
615 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
616 .backlight_init
= cdv_backlight_init
,
619 .init_pm
= cdv_init_pm
,
620 .save_regs
= cdv_save_display_registers
,
621 .restore_regs
= cdv_restore_display_registers
,
622 .save_crtc
= gma_crtc_save
,
623 .restore_crtc
= gma_crtc_restore
,
624 .power_down
= cdv_power_down
,
625 .power_up
= cdv_power_up
,
626 .update_wm
= cdv_update_wm
,
627 .disable_sr
= cdv_disable_sr
,