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1/*
2 * Copyright © 2006-2007 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 */
26
27#include <linux/delay.h>
28#include <linux/i2c.h>
29#include <linux/pm_runtime.h>
30
31#include <drm/drm_crtc_helper.h>
32#include <drm/drm_modeset_helper_vtables.h>
33#include <drm/drm_simple_kms_helper.h>
34
35#include "cdv_device.h"
36#include "intel_bios.h"
37#include "power.h"
38#include "psb_drv.h"
39#include "psb_intel_drv.h"
40#include "psb_intel_reg.h"
41
42
43static void cdv_intel_crt_dpms(struct drm_encoder *encoder, int mode)
44{
45 struct drm_device *dev = encoder->dev;
46 u32 temp, reg;
47 reg = ADPA;
48
49 temp = REG_READ(reg);
50 temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
51 temp &= ~ADPA_DAC_ENABLE;
52
53 switch (mode) {
54 case DRM_MODE_DPMS_ON:
55 temp |= ADPA_DAC_ENABLE;
56 break;
57 case DRM_MODE_DPMS_STANDBY:
58 temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
59 break;
60 case DRM_MODE_DPMS_SUSPEND:
61 temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
62 break;
63 case DRM_MODE_DPMS_OFF:
64 temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
65 break;
66 }
67
68 REG_WRITE(reg, temp);
69}
70
71static enum drm_mode_status cdv_intel_crt_mode_valid(struct drm_connector *connector,
72 struct drm_display_mode *mode)
73{
74 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
75 return MODE_NO_DBLESCAN;
76
77 /* The lowest clock for CDV is 20000KHz */
78 if (mode->clock < 20000)
79 return MODE_CLOCK_LOW;
80
81 /* The max clock for CDV is 355 instead of 400 */
82 if (mode->clock > 355000)
83 return MODE_CLOCK_HIGH;
84
85 return MODE_OK;
86}
87
88static void cdv_intel_crt_mode_set(struct drm_encoder *encoder,
89 struct drm_display_mode *mode,
90 struct drm_display_mode *adjusted_mode)
91{
92
93 struct drm_device *dev = encoder->dev;
94 struct drm_crtc *crtc = encoder->crtc;
95 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
96 int dpll_md_reg;
97 u32 adpa, dpll_md;
98 u32 adpa_reg;
99
100 if (gma_crtc->pipe == 0)
101 dpll_md_reg = DPLL_A_MD;
102 else
103 dpll_md_reg = DPLL_B_MD;
104
105 adpa_reg = ADPA;
106
107 /*
108 * Disable separate mode multiplier used when cloning SDVO to CRT
109 * XXX this needs to be adjusted when we really are cloning
110 */
111 {
112 dpll_md = REG_READ(dpll_md_reg);
113 REG_WRITE(dpll_md_reg,
114 dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK);
115 }
116
117 adpa = 0;
118 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
119 adpa |= ADPA_HSYNC_ACTIVE_HIGH;
120 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
121 adpa |= ADPA_VSYNC_ACTIVE_HIGH;
122
123 if (gma_crtc->pipe == 0)
124 adpa |= ADPA_PIPE_A_SELECT;
125 else
126 adpa |= ADPA_PIPE_B_SELECT;
127
128 REG_WRITE(adpa_reg, adpa);
129}
130
131
132/*
133 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
134 *
135 * \return true if CRT is connected.
136 * \return false if CRT is disconnected.
137 */
138static bool cdv_intel_crt_detect_hotplug(struct drm_connector *connector,
139 bool force)
140{
141 struct drm_device *dev = connector->dev;
142 u32 hotplug_en;
143 int i, tries = 0, ret = false;
144 u32 orig;
145
146 /*
147 * On a CDV thep, CRT detect sequence need to be done twice
148 * to get a reliable result.
149 */
150 tries = 2;
151
152 orig = hotplug_en = REG_READ(PORT_HOTPLUG_EN);
153 hotplug_en &= ~(CRT_HOTPLUG_DETECT_MASK);
154 hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
155
156 hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
157 hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
158
159 for (i = 0; i < tries ; i++) {
160 unsigned long timeout;
161 /* turn on the FORCE_DETECT */
162 REG_WRITE(PORT_HOTPLUG_EN, hotplug_en);
163 timeout = jiffies + msecs_to_jiffies(1000);
164 /* wait for FORCE_DETECT to go off */
165 do {
166 if (!(REG_READ(PORT_HOTPLUG_EN) &
167 CRT_HOTPLUG_FORCE_DETECT))
168 break;
169 msleep(1);
170 } while (time_after(timeout, jiffies));
171 }
172
173 if ((REG_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) !=
174 CRT_HOTPLUG_MONITOR_NONE)
175 ret = true;
176
177 /* clear the interrupt we just generated, if any */
178 REG_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
179
180 /* and put the bits back */
181 REG_WRITE(PORT_HOTPLUG_EN, orig);
182 return ret;
183}
184
185static enum drm_connector_status cdv_intel_crt_detect(
186 struct drm_connector *connector, bool force)
187{
188 if (cdv_intel_crt_detect_hotplug(connector, force))
189 return connector_status_connected;
190 else
191 return connector_status_disconnected;
192}
193
194static void cdv_intel_crt_destroy(struct drm_connector *connector)
195{
196 struct gma_connector *gma_connector = to_gma_connector(connector);
197 struct gma_i2c_chan *ddc_bus = to_gma_i2c_chan(connector->ddc);
198
199 gma_i2c_destroy(ddc_bus);
200 drm_connector_cleanup(connector);
201 kfree(gma_connector);
202}
203
204static int cdv_intel_crt_get_modes(struct drm_connector *connector)
205{
206 return psb_intel_ddc_get_modes(connector, connector->ddc);
207}
208
209static int cdv_intel_crt_set_property(struct drm_connector *connector,
210 struct drm_property *property,
211 uint64_t value)
212{
213 return 0;
214}
215
216/*
217 * Routines for controlling stuff on the analog port
218 */
219
220static const struct drm_encoder_helper_funcs cdv_intel_crt_helper_funcs = {
221 .dpms = cdv_intel_crt_dpms,
222 .prepare = gma_encoder_prepare,
223 .commit = gma_encoder_commit,
224 .mode_set = cdv_intel_crt_mode_set,
225};
226
227static const struct drm_connector_funcs cdv_intel_crt_connector_funcs = {
228 .dpms = drm_helper_connector_dpms,
229 .detect = cdv_intel_crt_detect,
230 .fill_modes = drm_helper_probe_single_connector_modes,
231 .destroy = cdv_intel_crt_destroy,
232 .set_property = cdv_intel_crt_set_property,
233};
234
235static const struct drm_connector_helper_funcs
236 cdv_intel_crt_connector_helper_funcs = {
237 .mode_valid = cdv_intel_crt_mode_valid,
238 .get_modes = cdv_intel_crt_get_modes,
239 .best_encoder = gma_best_encoder,
240};
241
242void cdv_intel_crt_init(struct drm_device *dev,
243 struct psb_intel_mode_device *mode_dev)
244{
245
246 struct gma_connector *gma_connector;
247 struct gma_encoder *gma_encoder;
248 struct gma_i2c_chan *ddc_bus;
249 struct drm_connector *connector;
250 struct drm_encoder *encoder;
251 int ret;
252
253 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
254 if (!gma_encoder)
255 return;
256
257 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);
258 if (!gma_connector)
259 goto err_free_encoder;
260
261 /* Set up the DDC bus. */
262 ddc_bus = gma_i2c_create(dev, GPIOA, "CRTDDC_A");
263 if (!ddc_bus) {
264 dev_printk(KERN_ERR, dev->dev, "DDC bus registration failed.\n");
265 goto err_free_connector;
266 }
267
268 connector = &gma_connector->base;
269 connector->polled = DRM_CONNECTOR_POLL_HPD;
270 ret = drm_connector_init_with_ddc(dev, connector,
271 &cdv_intel_crt_connector_funcs,
272 DRM_MODE_CONNECTOR_VGA,
273 &ddc_bus->base);
274 if (ret)
275 goto err_ddc_destroy;
276
277 encoder = &gma_encoder->base;
278 ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
279 if (ret)
280 goto err_connector_cleanup;
281
282 gma_connector_attach_encoder(gma_connector, gma_encoder);
283
284 gma_encoder->type = INTEL_OUTPUT_ANALOG;
285 connector->interlace_allowed = 0;
286 connector->doublescan_allowed = 0;
287
288 drm_encoder_helper_add(encoder, &cdv_intel_crt_helper_funcs);
289 drm_connector_helper_add(connector,
290 &cdv_intel_crt_connector_helper_funcs);
291
292 return;
293
294err_connector_cleanup:
295 drm_connector_cleanup(&gma_connector->base);
296err_ddc_destroy:
297 gma_i2c_destroy(ddc_bus);
298err_free_connector:
299 kfree(gma_connector);
300err_free_encoder:
301 kfree(gma_encoder);
302 return;
303}
1/*
2 * Copyright © 2006-2007 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 */
26
27#include <linux/i2c.h>
28#include <drm/drmP.h>
29
30#include "intel_bios.h"
31#include "psb_drv.h"
32#include "psb_intel_drv.h"
33#include "psb_intel_reg.h"
34#include "power.h"
35#include "cdv_device.h"
36#include <linux/pm_runtime.h>
37
38
39static void cdv_intel_crt_dpms(struct drm_encoder *encoder, int mode)
40{
41 struct drm_device *dev = encoder->dev;
42 u32 temp, reg;
43 reg = ADPA;
44
45 temp = REG_READ(reg);
46 temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
47 temp &= ~ADPA_DAC_ENABLE;
48
49 switch (mode) {
50 case DRM_MODE_DPMS_ON:
51 temp |= ADPA_DAC_ENABLE;
52 break;
53 case DRM_MODE_DPMS_STANDBY:
54 temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
55 break;
56 case DRM_MODE_DPMS_SUSPEND:
57 temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
58 break;
59 case DRM_MODE_DPMS_OFF:
60 temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
61 break;
62 }
63
64 REG_WRITE(reg, temp);
65}
66
67static int cdv_intel_crt_mode_valid(struct drm_connector *connector,
68 struct drm_display_mode *mode)
69{
70 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
71 return MODE_NO_DBLESCAN;
72
73 /* The lowest clock for CDV is 20000KHz */
74 if (mode->clock < 20000)
75 return MODE_CLOCK_LOW;
76
77 /* The max clock for CDV is 355 instead of 400 */
78 if (mode->clock > 355000)
79 return MODE_CLOCK_HIGH;
80
81 return MODE_OK;
82}
83
84static bool cdv_intel_crt_mode_fixup(struct drm_encoder *encoder,
85 struct drm_display_mode *mode,
86 struct drm_display_mode *adjusted_mode)
87{
88 return true;
89}
90
91static void cdv_intel_crt_mode_set(struct drm_encoder *encoder,
92 struct drm_display_mode *mode,
93 struct drm_display_mode *adjusted_mode)
94{
95
96 struct drm_device *dev = encoder->dev;
97 struct drm_crtc *crtc = encoder->crtc;
98 struct psb_intel_crtc *psb_intel_crtc =
99 to_psb_intel_crtc(crtc);
100 int dpll_md_reg;
101 u32 adpa, dpll_md;
102 u32 adpa_reg;
103
104 if (psb_intel_crtc->pipe == 0)
105 dpll_md_reg = DPLL_A_MD;
106 else
107 dpll_md_reg = DPLL_B_MD;
108
109 adpa_reg = ADPA;
110
111 /*
112 * Disable separate mode multiplier used when cloning SDVO to CRT
113 * XXX this needs to be adjusted when we really are cloning
114 */
115 {
116 dpll_md = REG_READ(dpll_md_reg);
117 REG_WRITE(dpll_md_reg,
118 dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK);
119 }
120
121 adpa = 0;
122 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
123 adpa |= ADPA_HSYNC_ACTIVE_HIGH;
124 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
125 adpa |= ADPA_VSYNC_ACTIVE_HIGH;
126
127 if (psb_intel_crtc->pipe == 0)
128 adpa |= ADPA_PIPE_A_SELECT;
129 else
130 adpa |= ADPA_PIPE_B_SELECT;
131
132 REG_WRITE(adpa_reg, adpa);
133}
134
135
136/**
137 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
138 *
139 * \return true if CRT is connected.
140 * \return false if CRT is disconnected.
141 */
142static bool cdv_intel_crt_detect_hotplug(struct drm_connector *connector,
143 bool force)
144{
145 struct drm_device *dev = connector->dev;
146 u32 hotplug_en;
147 int i, tries = 0, ret = false;
148 u32 orig;
149
150 /*
151 * On a CDV thep, CRT detect sequence need to be done twice
152 * to get a reliable result.
153 */
154 tries = 2;
155
156 orig = hotplug_en = REG_READ(PORT_HOTPLUG_EN);
157 hotplug_en &= ~(CRT_HOTPLUG_DETECT_MASK);
158 hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
159
160 hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
161 hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
162
163 for (i = 0; i < tries ; i++) {
164 unsigned long timeout;
165 /* turn on the FORCE_DETECT */
166 REG_WRITE(PORT_HOTPLUG_EN, hotplug_en);
167 timeout = jiffies + msecs_to_jiffies(1000);
168 /* wait for FORCE_DETECT to go off */
169 do {
170 if (!(REG_READ(PORT_HOTPLUG_EN) &
171 CRT_HOTPLUG_FORCE_DETECT))
172 break;
173 msleep(1);
174 } while (time_after(timeout, jiffies));
175 }
176
177 if ((REG_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) !=
178 CRT_HOTPLUG_MONITOR_NONE)
179 ret = true;
180
181 /* clear the interrupt we just generated, if any */
182 REG_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
183
184 /* and put the bits back */
185 REG_WRITE(PORT_HOTPLUG_EN, orig);
186 return ret;
187}
188
189static enum drm_connector_status cdv_intel_crt_detect(
190 struct drm_connector *connector, bool force)
191{
192 if (cdv_intel_crt_detect_hotplug(connector, force))
193 return connector_status_connected;
194 else
195 return connector_status_disconnected;
196}
197
198static void cdv_intel_crt_destroy(struct drm_connector *connector)
199{
200 struct psb_intel_encoder *psb_intel_encoder =
201 psb_intel_attached_encoder(connector);
202
203 psb_intel_i2c_destroy(psb_intel_encoder->ddc_bus);
204 drm_sysfs_connector_remove(connector);
205 drm_connector_cleanup(connector);
206 kfree(connector);
207}
208
209static int cdv_intel_crt_get_modes(struct drm_connector *connector)
210{
211 struct psb_intel_encoder *psb_intel_encoder =
212 psb_intel_attached_encoder(connector);
213 return psb_intel_ddc_get_modes(connector, &psb_intel_encoder->ddc_bus->adapter);
214}
215
216static int cdv_intel_crt_set_property(struct drm_connector *connector,
217 struct drm_property *property,
218 uint64_t value)
219{
220 return 0;
221}
222
223/*
224 * Routines for controlling stuff on the analog port
225 */
226
227static const struct drm_encoder_helper_funcs cdv_intel_crt_helper_funcs = {
228 .dpms = cdv_intel_crt_dpms,
229 .mode_fixup = cdv_intel_crt_mode_fixup,
230 .prepare = psb_intel_encoder_prepare,
231 .commit = psb_intel_encoder_commit,
232 .mode_set = cdv_intel_crt_mode_set,
233};
234
235static const struct drm_connector_funcs cdv_intel_crt_connector_funcs = {
236 .dpms = drm_helper_connector_dpms,
237 .detect = cdv_intel_crt_detect,
238 .fill_modes = drm_helper_probe_single_connector_modes,
239 .destroy = cdv_intel_crt_destroy,
240 .set_property = cdv_intel_crt_set_property,
241};
242
243static const struct drm_connector_helper_funcs
244 cdv_intel_crt_connector_helper_funcs = {
245 .mode_valid = cdv_intel_crt_mode_valid,
246 .get_modes = cdv_intel_crt_get_modes,
247 .best_encoder = psb_intel_best_encoder,
248};
249
250static void cdv_intel_crt_enc_destroy(struct drm_encoder *encoder)
251{
252 drm_encoder_cleanup(encoder);
253}
254
255static const struct drm_encoder_funcs cdv_intel_crt_enc_funcs = {
256 .destroy = cdv_intel_crt_enc_destroy,
257};
258
259void cdv_intel_crt_init(struct drm_device *dev,
260 struct psb_intel_mode_device *mode_dev)
261{
262
263 struct psb_intel_connector *psb_intel_connector;
264 struct psb_intel_encoder *psb_intel_encoder;
265 struct drm_connector *connector;
266 struct drm_encoder *encoder;
267
268 u32 i2c_reg;
269
270 psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), GFP_KERNEL);
271 if (!psb_intel_encoder)
272 return;
273
274 psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), GFP_KERNEL);
275 if (!psb_intel_connector)
276 goto failed_connector;
277
278 connector = &psb_intel_connector->base;
279 drm_connector_init(dev, connector,
280 &cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
281
282 encoder = &psb_intel_encoder->base;
283 drm_encoder_init(dev, encoder,
284 &cdv_intel_crt_enc_funcs, DRM_MODE_ENCODER_DAC);
285
286 psb_intel_connector_attach_encoder(psb_intel_connector,
287 psb_intel_encoder);
288
289 /* Set up the DDC bus. */
290 i2c_reg = GPIOA;
291 /* Remove the following code for CDV */
292 /*
293 if (dev_priv->crt_ddc_bus != 0)
294 i2c_reg = dev_priv->crt_ddc_bus;
295 }*/
296 psb_intel_encoder->ddc_bus = psb_intel_i2c_create(dev,
297 i2c_reg, "CRTDDC_A");
298 if (!psb_intel_encoder->ddc_bus) {
299 dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
300 "failed.\n");
301 goto failed_ddc;
302 }
303
304 psb_intel_encoder->type = INTEL_OUTPUT_ANALOG;
305 /*
306 psb_intel_output->clone_mask = (1 << INTEL_ANALOG_CLONE_BIT);
307 psb_intel_output->crtc_mask = (1 << 0) | (1 << 1);
308 */
309 connector->interlace_allowed = 0;
310 connector->doublescan_allowed = 0;
311
312 drm_encoder_helper_add(encoder, &cdv_intel_crt_helper_funcs);
313 drm_connector_helper_add(connector,
314 &cdv_intel_crt_connector_helper_funcs);
315
316 drm_sysfs_connector_add(connector);
317
318 return;
319failed_ddc:
320 drm_encoder_cleanup(&psb_intel_encoder->base);
321 drm_connector_cleanup(&psb_intel_connector->base);
322 kfree(psb_intel_connector);
323failed_connector:
324 kfree(psb_intel_encoder);
325 return;
326}