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1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 */
28#include "drmP.h"
29#include "drm_crtc_helper.h"
30#include "radeon_drm.h"
31#include "radeon_reg.h"
32#include "radeon.h"
33#include "atom.h"
34
35irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
36{
37 struct drm_device *dev = (struct drm_device *) arg;
38 struct radeon_device *rdev = dev->dev_private;
39
40 return radeon_irq_process(rdev);
41}
42
43/*
44 * Handle hotplug events outside the interrupt handler proper.
45 */
46static void radeon_hotplug_work_func(struct work_struct *work)
47{
48 struct radeon_device *rdev = container_of(work, struct radeon_device,
49 hotplug_work);
50 struct drm_device *dev = rdev->ddev;
51 struct drm_mode_config *mode_config = &dev->mode_config;
52 struct drm_connector *connector;
53
54 if (mode_config->num_connector) {
55 list_for_each_entry(connector, &mode_config->connector_list, head)
56 radeon_connector_hotplug(connector);
57 }
58 /* Just fire off a uevent and let userspace tell us what to do */
59 drm_helper_hpd_irq_event(dev);
60}
61
62void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
63{
64 struct radeon_device *rdev = dev->dev_private;
65 unsigned i;
66
67 /* Disable *all* interrupts */
68 rdev->irq.sw_int = false;
69 rdev->irq.gui_idle = false;
70 for (i = 0; i < rdev->num_crtc; i++)
71 rdev->irq.crtc_vblank_int[i] = false;
72 for (i = 0; i < 6; i++) {
73 rdev->irq.hpd[i] = false;
74 rdev->irq.pflip[i] = false;
75 }
76 radeon_irq_set(rdev);
77 /* Clear bits */
78 radeon_irq_process(rdev);
79}
80
81int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
82{
83 struct radeon_device *rdev = dev->dev_private;
84
85 dev->max_vblank_count = 0x001fffff;
86 rdev->irq.sw_int = true;
87 radeon_irq_set(rdev);
88 return 0;
89}
90
91void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
92{
93 struct radeon_device *rdev = dev->dev_private;
94 unsigned i;
95
96 if (rdev == NULL) {
97 return;
98 }
99 /* Disable *all* interrupts */
100 rdev->irq.sw_int = false;
101 rdev->irq.gui_idle = false;
102 for (i = 0; i < rdev->num_crtc; i++)
103 rdev->irq.crtc_vblank_int[i] = false;
104 for (i = 0; i < 6; i++) {
105 rdev->irq.hpd[i] = false;
106 rdev->irq.pflip[i] = false;
107 }
108 radeon_irq_set(rdev);
109}
110
111int radeon_irq_kms_init(struct radeon_device *rdev)
112{
113 int i;
114 int r = 0;
115
116 INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
117
118 spin_lock_init(&rdev->irq.sw_lock);
119 for (i = 0; i < rdev->num_crtc; i++)
120 spin_lock_init(&rdev->irq.pflip_lock[i]);
121 r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
122 if (r) {
123 return r;
124 }
125 /* enable msi */
126 rdev->msi_enabled = 0;
127 /* MSIs don't seem to work reliably on all IGP
128 * chips. Disable MSI on them for now.
129 */
130 if ((rdev->family >= CHIP_RV380) &&
131 ((!(rdev->flags & RADEON_IS_IGP)) || (rdev->family >= CHIP_PALM)) &&
132 (!(rdev->flags & RADEON_IS_AGP))) {
133 int ret = pci_enable_msi(rdev->pdev);
134 if (!ret) {
135 rdev->msi_enabled = 1;
136 dev_info(rdev->dev, "radeon: using MSI.\n");
137 }
138 }
139 rdev->irq.installed = true;
140 r = drm_irq_install(rdev->ddev);
141 if (r) {
142 rdev->irq.installed = false;
143 return r;
144 }
145 DRM_INFO("radeon: irq initialized.\n");
146 return 0;
147}
148
149void radeon_irq_kms_fini(struct radeon_device *rdev)
150{
151 drm_vblank_cleanup(rdev->ddev);
152 if (rdev->irq.installed) {
153 drm_irq_uninstall(rdev->ddev);
154 rdev->irq.installed = false;
155 if (rdev->msi_enabled)
156 pci_disable_msi(rdev->pdev);
157 }
158 flush_work_sync(&rdev->hotplug_work);
159}
160
161void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev)
162{
163 unsigned long irqflags;
164
165 spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
166 if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) {
167 rdev->irq.sw_int = true;
168 radeon_irq_set(rdev);
169 }
170 spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
171}
172
173void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev)
174{
175 unsigned long irqflags;
176
177 spin_lock_irqsave(&rdev->irq.sw_lock, irqflags);
178 BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0);
179 if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) {
180 rdev->irq.sw_int = false;
181 radeon_irq_set(rdev);
182 }
183 spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
184}
185
186void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
187{
188 unsigned long irqflags;
189
190 if (crtc < 0 || crtc >= rdev->num_crtc)
191 return;
192
193 spin_lock_irqsave(&rdev->irq.pflip_lock[crtc], irqflags);
194 if (rdev->ddev->irq_enabled && (++rdev->irq.pflip_refcount[crtc] == 1)) {
195 rdev->irq.pflip[crtc] = true;
196 radeon_irq_set(rdev);
197 }
198 spin_unlock_irqrestore(&rdev->irq.pflip_lock[crtc], irqflags);
199}
200
201void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
202{
203 unsigned long irqflags;
204
205 if (crtc < 0 || crtc >= rdev->num_crtc)
206 return;
207
208 spin_lock_irqsave(&rdev->irq.pflip_lock[crtc], irqflags);
209 BUG_ON(rdev->ddev->irq_enabled && rdev->irq.pflip_refcount[crtc] <= 0);
210 if (rdev->ddev->irq_enabled && (--rdev->irq.pflip_refcount[crtc] == 0)) {
211 rdev->irq.pflip[crtc] = false;
212 radeon_irq_set(rdev);
213 }
214 spin_unlock_irqrestore(&rdev->irq.pflip_lock[crtc], irqflags);
215}
216
1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 */
28#include <drm/drmP.h>
29#include <drm/drm_crtc_helper.h>
30#include <drm/radeon_drm.h>
31#include "radeon_reg.h"
32#include "radeon.h"
33#include "atom.h"
34
35#include <linux/pm_runtime.h>
36
37#define RADEON_WAIT_IDLE_TIMEOUT 200
38
39/**
40 * radeon_driver_irq_handler_kms - irq handler for KMS
41 *
42 * @int irq, void *arg: args
43 *
44 * This is the irq handler for the radeon KMS driver (all asics).
45 * radeon_irq_process is a macro that points to the per-asic
46 * irq handler callback.
47 */
48irqreturn_t radeon_driver_irq_handler_kms(int irq, void *arg)
49{
50 struct drm_device *dev = (struct drm_device *) arg;
51 struct radeon_device *rdev = dev->dev_private;
52 irqreturn_t ret;
53
54 ret = radeon_irq_process(rdev);
55 if (ret == IRQ_HANDLED)
56 pm_runtime_mark_last_busy(dev->dev);
57 return ret;
58}
59
60/*
61 * Handle hotplug events outside the interrupt handler proper.
62 */
63/**
64 * radeon_hotplug_work_func - display hotplug work handler
65 *
66 * @work: work struct
67 *
68 * This is the hot plug event work handler (all asics).
69 * The work gets scheduled from the irq handler if there
70 * was a hot plug interrupt. It walks the connector table
71 * and calls the hotplug handler for each one, then sends
72 * a drm hotplug event to alert userspace.
73 */
74static void radeon_hotplug_work_func(struct work_struct *work)
75{
76 struct radeon_device *rdev = container_of(work, struct radeon_device,
77 hotplug_work.work);
78 struct drm_device *dev = rdev->ddev;
79 struct drm_mode_config *mode_config = &dev->mode_config;
80 struct drm_connector *connector;
81
82 /* we can race here at startup, some boards seem to trigger
83 * hotplug irqs when they shouldn't. */
84 if (!rdev->mode_info.mode_config_initialized)
85 return;
86
87 mutex_lock(&mode_config->mutex);
88 if (mode_config->num_connector) {
89 list_for_each_entry(connector, &mode_config->connector_list, head)
90 radeon_connector_hotplug(connector);
91 }
92 mutex_unlock(&mode_config->mutex);
93 /* Just fire off a uevent and let userspace tell us what to do */
94 drm_helper_hpd_irq_event(dev);
95}
96
97static void radeon_dp_work_func(struct work_struct *work)
98{
99 struct radeon_device *rdev = container_of(work, struct radeon_device,
100 dp_work);
101 struct drm_device *dev = rdev->ddev;
102 struct drm_mode_config *mode_config = &dev->mode_config;
103 struct drm_connector *connector;
104
105 /* this should take a mutex */
106 if (mode_config->num_connector) {
107 list_for_each_entry(connector, &mode_config->connector_list, head)
108 radeon_connector_hotplug(connector);
109 }
110}
111/**
112 * radeon_driver_irq_preinstall_kms - drm irq preinstall callback
113 *
114 * @dev: drm dev pointer
115 *
116 * Gets the hw ready to enable irqs (all asics).
117 * This function disables all interrupt sources on the GPU.
118 */
119void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
120{
121 struct radeon_device *rdev = dev->dev_private;
122 unsigned long irqflags;
123 unsigned i;
124
125 spin_lock_irqsave(&rdev->irq.lock, irqflags);
126 /* Disable *all* interrupts */
127 for (i = 0; i < RADEON_NUM_RINGS; i++)
128 atomic_set(&rdev->irq.ring_int[i], 0);
129 rdev->irq.dpm_thermal = false;
130 for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
131 rdev->irq.hpd[i] = false;
132 for (i = 0; i < RADEON_MAX_CRTCS; i++) {
133 rdev->irq.crtc_vblank_int[i] = false;
134 atomic_set(&rdev->irq.pflip[i], 0);
135 rdev->irq.afmt[i] = false;
136 }
137 radeon_irq_set(rdev);
138 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
139 /* Clear bits */
140 radeon_irq_process(rdev);
141}
142
143/**
144 * radeon_driver_irq_postinstall_kms - drm irq preinstall callback
145 *
146 * @dev: drm dev pointer
147 *
148 * Handles stuff to be done after enabling irqs (all asics).
149 * Returns 0 on success.
150 */
151int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
152{
153 struct radeon_device *rdev = dev->dev_private;
154
155 if (ASIC_IS_AVIVO(rdev))
156 dev->max_vblank_count = 0x00ffffff;
157 else
158 dev->max_vblank_count = 0x001fffff;
159
160 return 0;
161}
162
163/**
164 * radeon_driver_irq_uninstall_kms - drm irq uninstall callback
165 *
166 * @dev: drm dev pointer
167 *
168 * This function disables all interrupt sources on the GPU (all asics).
169 */
170void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
171{
172 struct radeon_device *rdev = dev->dev_private;
173 unsigned long irqflags;
174 unsigned i;
175
176 if (rdev == NULL) {
177 return;
178 }
179 spin_lock_irqsave(&rdev->irq.lock, irqflags);
180 /* Disable *all* interrupts */
181 for (i = 0; i < RADEON_NUM_RINGS; i++)
182 atomic_set(&rdev->irq.ring_int[i], 0);
183 rdev->irq.dpm_thermal = false;
184 for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
185 rdev->irq.hpd[i] = false;
186 for (i = 0; i < RADEON_MAX_CRTCS; i++) {
187 rdev->irq.crtc_vblank_int[i] = false;
188 atomic_set(&rdev->irq.pflip[i], 0);
189 rdev->irq.afmt[i] = false;
190 }
191 radeon_irq_set(rdev);
192 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
193}
194
195/**
196 * radeon_msi_ok - asic specific msi checks
197 *
198 * @rdev: radeon device pointer
199 *
200 * Handles asic specific MSI checks to determine if
201 * MSIs should be enabled on a particular chip (all asics).
202 * Returns true if MSIs should be enabled, false if MSIs
203 * should not be enabled.
204 */
205static bool radeon_msi_ok(struct radeon_device *rdev)
206{
207 /* RV370/RV380 was first asic with MSI support */
208 if (rdev->family < CHIP_RV380)
209 return false;
210
211 /* MSIs don't work on AGP */
212 if (rdev->flags & RADEON_IS_AGP)
213 return false;
214
215 /*
216 * Older chips have a HW limitation, they can only generate 40 bits
217 * of address for "64-bit" MSIs which breaks on some platforms, notably
218 * IBM POWER servers, so we limit them
219 */
220 if (rdev->family < CHIP_BONAIRE) {
221 dev_info(rdev->dev, "radeon: MSI limited to 32-bit\n");
222 rdev->pdev->no_64bit_msi = 1;
223 }
224
225 /* force MSI on */
226 if (radeon_msi == 1)
227 return true;
228 else if (radeon_msi == 0)
229 return false;
230
231 /* Quirks */
232 /* HP RS690 only seems to work with MSIs. */
233 if ((rdev->pdev->device == 0x791f) &&
234 (rdev->pdev->subsystem_vendor == 0x103c) &&
235 (rdev->pdev->subsystem_device == 0x30c2))
236 return true;
237
238 /* Dell RS690 only seems to work with MSIs. */
239 if ((rdev->pdev->device == 0x791f) &&
240 (rdev->pdev->subsystem_vendor == 0x1028) &&
241 (rdev->pdev->subsystem_device == 0x01fc))
242 return true;
243
244 /* Dell RS690 only seems to work with MSIs. */
245 if ((rdev->pdev->device == 0x791f) &&
246 (rdev->pdev->subsystem_vendor == 0x1028) &&
247 (rdev->pdev->subsystem_device == 0x01fd))
248 return true;
249
250 /* Gateway RS690 only seems to work with MSIs. */
251 if ((rdev->pdev->device == 0x791f) &&
252 (rdev->pdev->subsystem_vendor == 0x107b) &&
253 (rdev->pdev->subsystem_device == 0x0185))
254 return true;
255
256 /* try and enable MSIs by default on all RS690s */
257 if (rdev->family == CHIP_RS690)
258 return true;
259
260 /* RV515 seems to have MSI issues where it loses
261 * MSI rearms occasionally. This leads to lockups and freezes.
262 * disable it by default.
263 */
264 if (rdev->family == CHIP_RV515)
265 return false;
266 if (rdev->flags & RADEON_IS_IGP) {
267 /* APUs work fine with MSIs */
268 if (rdev->family >= CHIP_PALM)
269 return true;
270 /* lots of IGPs have problems with MSIs */
271 return false;
272 }
273
274 return true;
275}
276
277/**
278 * radeon_irq_kms_init - init driver interrupt info
279 *
280 * @rdev: radeon device pointer
281 *
282 * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
283 * Returns 0 for success, error for failure.
284 */
285int radeon_irq_kms_init(struct radeon_device *rdev)
286{
287 int r = 0;
288
289 spin_lock_init(&rdev->irq.lock);
290 r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
291 if (r) {
292 return r;
293 }
294
295 /* enable msi */
296 rdev->msi_enabled = 0;
297
298 if (radeon_msi_ok(rdev)) {
299 int ret = pci_enable_msi(rdev->pdev);
300 if (!ret) {
301 rdev->msi_enabled = 1;
302 dev_info(rdev->dev, "radeon: using MSI.\n");
303 }
304 }
305
306 INIT_DELAYED_WORK(&rdev->hotplug_work, radeon_hotplug_work_func);
307 INIT_WORK(&rdev->dp_work, radeon_dp_work_func);
308 INIT_WORK(&rdev->audio_work, r600_audio_update_hdmi);
309
310 rdev->irq.installed = true;
311 r = drm_irq_install(rdev->ddev, rdev->ddev->pdev->irq);
312 if (r) {
313 rdev->irq.installed = false;
314 flush_delayed_work(&rdev->hotplug_work);
315 return r;
316 }
317
318 DRM_INFO("radeon: irq initialized.\n");
319 return 0;
320}
321
322/**
323 * radeon_irq_kms_fini - tear down driver interrupt info
324 *
325 * @rdev: radeon device pointer
326 *
327 * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics).
328 */
329void radeon_irq_kms_fini(struct radeon_device *rdev)
330{
331 drm_vblank_cleanup(rdev->ddev);
332 if (rdev->irq.installed) {
333 drm_irq_uninstall(rdev->ddev);
334 rdev->irq.installed = false;
335 if (rdev->msi_enabled)
336 pci_disable_msi(rdev->pdev);
337 flush_delayed_work(&rdev->hotplug_work);
338 }
339}
340
341/**
342 * radeon_irq_kms_sw_irq_get - enable software interrupt
343 *
344 * @rdev: radeon device pointer
345 * @ring: ring whose interrupt you want to enable
346 *
347 * Enables the software interrupt for a specific ring (all asics).
348 * The software interrupt is generally used to signal a fence on
349 * a particular ring.
350 */
351void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring)
352{
353 unsigned long irqflags;
354
355 if (!rdev->ddev->irq_enabled)
356 return;
357
358 if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) {
359 spin_lock_irqsave(&rdev->irq.lock, irqflags);
360 radeon_irq_set(rdev);
361 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
362 }
363}
364
365/**
366 * radeon_irq_kms_sw_irq_get_delayed - enable software interrupt
367 *
368 * @rdev: radeon device pointer
369 * @ring: ring whose interrupt you want to enable
370 *
371 * Enables the software interrupt for a specific ring (all asics).
372 * The software interrupt is generally used to signal a fence on
373 * a particular ring.
374 */
375bool radeon_irq_kms_sw_irq_get_delayed(struct radeon_device *rdev, int ring)
376{
377 return atomic_inc_return(&rdev->irq.ring_int[ring]) == 1;
378}
379
380/**
381 * radeon_irq_kms_sw_irq_put - disable software interrupt
382 *
383 * @rdev: radeon device pointer
384 * @ring: ring whose interrupt you want to disable
385 *
386 * Disables the software interrupt for a specific ring (all asics).
387 * The software interrupt is generally used to signal a fence on
388 * a particular ring.
389 */
390void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring)
391{
392 unsigned long irqflags;
393
394 if (!rdev->ddev->irq_enabled)
395 return;
396
397 if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) {
398 spin_lock_irqsave(&rdev->irq.lock, irqflags);
399 radeon_irq_set(rdev);
400 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
401 }
402}
403
404/**
405 * radeon_irq_kms_pflip_irq_get - enable pageflip interrupt
406 *
407 * @rdev: radeon device pointer
408 * @crtc: crtc whose interrupt you want to enable
409 *
410 * Enables the pageflip interrupt for a specific crtc (all asics).
411 * For pageflips we use the vblank interrupt source.
412 */
413void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
414{
415 unsigned long irqflags;
416
417 if (crtc < 0 || crtc >= rdev->num_crtc)
418 return;
419
420 if (!rdev->ddev->irq_enabled)
421 return;
422
423 if (atomic_inc_return(&rdev->irq.pflip[crtc]) == 1) {
424 spin_lock_irqsave(&rdev->irq.lock, irqflags);
425 radeon_irq_set(rdev);
426 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
427 }
428}
429
430/**
431 * radeon_irq_kms_pflip_irq_put - disable pageflip interrupt
432 *
433 * @rdev: radeon device pointer
434 * @crtc: crtc whose interrupt you want to disable
435 *
436 * Disables the pageflip interrupt for a specific crtc (all asics).
437 * For pageflips we use the vblank interrupt source.
438 */
439void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
440{
441 unsigned long irqflags;
442
443 if (crtc < 0 || crtc >= rdev->num_crtc)
444 return;
445
446 if (!rdev->ddev->irq_enabled)
447 return;
448
449 if (atomic_dec_and_test(&rdev->irq.pflip[crtc])) {
450 spin_lock_irqsave(&rdev->irq.lock, irqflags);
451 radeon_irq_set(rdev);
452 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
453 }
454}
455
456/**
457 * radeon_irq_kms_enable_afmt - enable audio format change interrupt
458 *
459 * @rdev: radeon device pointer
460 * @block: afmt block whose interrupt you want to enable
461 *
462 * Enables the afmt change interrupt for a specific afmt block (all asics).
463 */
464void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block)
465{
466 unsigned long irqflags;
467
468 if (!rdev->ddev->irq_enabled)
469 return;
470
471 spin_lock_irqsave(&rdev->irq.lock, irqflags);
472 rdev->irq.afmt[block] = true;
473 radeon_irq_set(rdev);
474 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
475
476}
477
478/**
479 * radeon_irq_kms_disable_afmt - disable audio format change interrupt
480 *
481 * @rdev: radeon device pointer
482 * @block: afmt block whose interrupt you want to disable
483 *
484 * Disables the afmt change interrupt for a specific afmt block (all asics).
485 */
486void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block)
487{
488 unsigned long irqflags;
489
490 if (!rdev->ddev->irq_enabled)
491 return;
492
493 spin_lock_irqsave(&rdev->irq.lock, irqflags);
494 rdev->irq.afmt[block] = false;
495 radeon_irq_set(rdev);
496 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
497}
498
499/**
500 * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt
501 *
502 * @rdev: radeon device pointer
503 * @hpd_mask: mask of hpd pins you want to enable.
504 *
505 * Enables the hotplug detect interrupt for a specific hpd pin (all asics).
506 */
507void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
508{
509 unsigned long irqflags;
510 int i;
511
512 if (!rdev->ddev->irq_enabled)
513 return;
514
515 spin_lock_irqsave(&rdev->irq.lock, irqflags);
516 for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
517 rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i));
518 radeon_irq_set(rdev);
519 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
520}
521
522/**
523 * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt
524 *
525 * @rdev: radeon device pointer
526 * @hpd_mask: mask of hpd pins you want to disable.
527 *
528 * Disables the hotplug detect interrupt for a specific hpd pin (all asics).
529 */
530void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
531{
532 unsigned long irqflags;
533 int i;
534
535 if (!rdev->ddev->irq_enabled)
536 return;
537
538 spin_lock_irqsave(&rdev->irq.lock, irqflags);
539 for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
540 rdev->irq.hpd[i] &= !(hpd_mask & (1 << i));
541 radeon_irq_set(rdev);
542 spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
543}
544