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1/*
2 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#include <linux/of_irq.h>
20#include <linux/of_gpio.h>
21
22#include "hdmi.h"
23
24void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
25{
26 uint32_t ctrl = 0;
27 unsigned long flags;
28
29 spin_lock_irqsave(&hdmi->reg_lock, flags);
30 if (power_on) {
31 ctrl |= HDMI_CTRL_ENABLE;
32 if (!hdmi->hdmi_mode) {
33 ctrl |= HDMI_CTRL_HDMI;
34 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
35 ctrl &= ~HDMI_CTRL_HDMI;
36 } else {
37 ctrl |= HDMI_CTRL_HDMI;
38 }
39 } else {
40 ctrl = HDMI_CTRL_HDMI;
41 }
42
43 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
44 spin_unlock_irqrestore(&hdmi->reg_lock, flags);
45 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
46 power_on ? "Enable" : "Disable", ctrl);
47}
48
49static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
50{
51 struct hdmi *hdmi = dev_id;
52
53 /* Process HPD: */
54 msm_hdmi_connector_irq(hdmi->connector);
55
56 /* Process DDC: */
57 msm_hdmi_i2c_irq(hdmi->i2c);
58
59 /* Process HDCP: */
60 if (hdmi->hdcp_ctrl)
61 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
62
63 /* TODO audio.. */
64
65 return IRQ_HANDLED;
66}
67
68static void msm_hdmi_destroy(struct hdmi *hdmi)
69{
70 /*
71 * at this point, hpd has been disabled,
72 * after flush workq, it's safe to deinit hdcp
73 */
74 if (hdmi->workq) {
75 flush_workqueue(hdmi->workq);
76 destroy_workqueue(hdmi->workq);
77 }
78 msm_hdmi_hdcp_destroy(hdmi);
79
80 if (hdmi->phy_dev) {
81 put_device(hdmi->phy_dev);
82 hdmi->phy = NULL;
83 hdmi->phy_dev = NULL;
84 }
85
86 if (hdmi->i2c)
87 msm_hdmi_i2c_destroy(hdmi->i2c);
88
89 platform_set_drvdata(hdmi->pdev, NULL);
90}
91
92static int msm_hdmi_get_phy(struct hdmi *hdmi)
93{
94 struct platform_device *pdev = hdmi->pdev;
95 struct platform_device *phy_pdev;
96 struct device_node *phy_node;
97
98 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
99 if (!phy_node) {
100 dev_err(&pdev->dev, "cannot find phy device\n");
101 return -ENXIO;
102 }
103
104 phy_pdev = of_find_device_by_node(phy_node);
105 if (phy_pdev)
106 hdmi->phy = platform_get_drvdata(phy_pdev);
107
108 of_node_put(phy_node);
109
110 if (!phy_pdev || !hdmi->phy) {
111 dev_err(&pdev->dev, "phy driver is not ready\n");
112 return -EPROBE_DEFER;
113 }
114
115 hdmi->phy_dev = get_device(&phy_pdev->dev);
116
117 return 0;
118}
119
120/* construct hdmi at bind/probe time, grab all the resources. If
121 * we are to EPROBE_DEFER we want to do it here, rather than later
122 * at modeset_init() time
123 */
124static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
125{
126 struct hdmi_platform_config *config = pdev->dev.platform_data;
127 struct hdmi *hdmi = NULL;
128 struct resource *res;
129 int i, ret;
130
131 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
132 if (!hdmi) {
133 ret = -ENOMEM;
134 goto fail;
135 }
136
137 hdmi->pdev = pdev;
138 hdmi->config = config;
139 spin_lock_init(&hdmi->reg_lock);
140
141 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
142 if (IS_ERR(hdmi->mmio)) {
143 ret = PTR_ERR(hdmi->mmio);
144 goto fail;
145 }
146
147 /* HDCP needs physical address of hdmi register */
148 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
149 config->mmio_name);
150 hdmi->mmio_phy_addr = res->start;
151
152 hdmi->qfprom_mmio = msm_ioremap(pdev,
153 config->qfprom_mmio_name, "HDMI_QFPROM");
154 if (IS_ERR(hdmi->qfprom_mmio)) {
155 dev_info(&pdev->dev, "can't find qfprom resource\n");
156 hdmi->qfprom_mmio = NULL;
157 }
158
159 hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
160 config->hpd_reg_cnt, GFP_KERNEL);
161 if (!hdmi->hpd_regs) {
162 ret = -ENOMEM;
163 goto fail;
164 }
165 for (i = 0; i < config->hpd_reg_cnt; i++) {
166 struct regulator *reg;
167
168 reg = devm_regulator_get(&pdev->dev,
169 config->hpd_reg_names[i]);
170 if (IS_ERR(reg)) {
171 ret = PTR_ERR(reg);
172 dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
173 config->hpd_reg_names[i], ret);
174 goto fail;
175 }
176
177 hdmi->hpd_regs[i] = reg;
178 }
179
180 hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
181 config->pwr_reg_cnt, GFP_KERNEL);
182 if (!hdmi->pwr_regs) {
183 ret = -ENOMEM;
184 goto fail;
185 }
186 for (i = 0; i < config->pwr_reg_cnt; i++) {
187 struct regulator *reg;
188
189 reg = devm_regulator_get(&pdev->dev,
190 config->pwr_reg_names[i]);
191 if (IS_ERR(reg)) {
192 ret = PTR_ERR(reg);
193 dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
194 config->pwr_reg_names[i], ret);
195 goto fail;
196 }
197
198 hdmi->pwr_regs[i] = reg;
199 }
200
201 hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
202 config->hpd_clk_cnt, GFP_KERNEL);
203 if (!hdmi->hpd_clks) {
204 ret = -ENOMEM;
205 goto fail;
206 }
207 for (i = 0; i < config->hpd_clk_cnt; i++) {
208 struct clk *clk;
209
210 clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
211 if (IS_ERR(clk)) {
212 ret = PTR_ERR(clk);
213 dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
214 config->hpd_clk_names[i], ret);
215 goto fail;
216 }
217
218 hdmi->hpd_clks[i] = clk;
219 }
220
221 hdmi->pwr_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
222 config->pwr_clk_cnt, GFP_KERNEL);
223 if (!hdmi->pwr_clks) {
224 ret = -ENOMEM;
225 goto fail;
226 }
227 for (i = 0; i < config->pwr_clk_cnt; i++) {
228 struct clk *clk;
229
230 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
231 if (IS_ERR(clk)) {
232 ret = PTR_ERR(clk);
233 dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
234 config->pwr_clk_names[i], ret);
235 goto fail;
236 }
237
238 hdmi->pwr_clks[i] = clk;
239 }
240
241 hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
242
243 hdmi->i2c = msm_hdmi_i2c_init(hdmi);
244 if (IS_ERR(hdmi->i2c)) {
245 ret = PTR_ERR(hdmi->i2c);
246 dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
247 hdmi->i2c = NULL;
248 goto fail;
249 }
250
251 ret = msm_hdmi_get_phy(hdmi);
252 if (ret) {
253 dev_err(&pdev->dev, "failed to get phy\n");
254 goto fail;
255 }
256
257 hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
258 if (IS_ERR(hdmi->hdcp_ctrl)) {
259 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
260 hdmi->hdcp_ctrl = NULL;
261 }
262
263 return hdmi;
264
265fail:
266 if (hdmi)
267 msm_hdmi_destroy(hdmi);
268
269 return ERR_PTR(ret);
270}
271
272/* Second part of initialization, the drm/kms level modeset_init,
273 * constructs/initializes mode objects, etc, is called from master
274 * driver (not hdmi sub-device's probe/bind!)
275 *
276 * Any resource (regulator/clk/etc) which could be missing at boot
277 * should be handled in msm_hdmi_init() so that failure happens from
278 * hdmi sub-device's probe.
279 */
280int msm_hdmi_modeset_init(struct hdmi *hdmi,
281 struct drm_device *dev, struct drm_encoder *encoder)
282{
283 struct msm_drm_private *priv = dev->dev_private;
284 struct platform_device *pdev = hdmi->pdev;
285 int ret;
286
287 hdmi->dev = dev;
288 hdmi->encoder = encoder;
289
290 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
291
292 hdmi->bridge = msm_hdmi_bridge_init(hdmi);
293 if (IS_ERR(hdmi->bridge)) {
294 ret = PTR_ERR(hdmi->bridge);
295 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
296 hdmi->bridge = NULL;
297 goto fail;
298 }
299
300 hdmi->connector = msm_hdmi_connector_init(hdmi);
301 if (IS_ERR(hdmi->connector)) {
302 ret = PTR_ERR(hdmi->connector);
303 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
304 hdmi->connector = NULL;
305 goto fail;
306 }
307
308 hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
309 if (hdmi->irq < 0) {
310 ret = hdmi->irq;
311 dev_err(dev->dev, "failed to get irq: %d\n", ret);
312 goto fail;
313 }
314
315 ret = devm_request_irq(&pdev->dev, hdmi->irq,
316 msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
317 "hdmi_isr", hdmi);
318 if (ret < 0) {
319 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
320 hdmi->irq, ret);
321 goto fail;
322 }
323
324 encoder->bridge = hdmi->bridge;
325
326 priv->bridges[priv->num_bridges++] = hdmi->bridge;
327 priv->connectors[priv->num_connectors++] = hdmi->connector;
328
329 platform_set_drvdata(pdev, hdmi);
330
331 return 0;
332
333fail:
334 /* bridge is normally destroyed by drm: */
335 if (hdmi->bridge) {
336 msm_hdmi_bridge_destroy(hdmi->bridge);
337 hdmi->bridge = NULL;
338 }
339 if (hdmi->connector) {
340 hdmi->connector->funcs->destroy(hdmi->connector);
341 hdmi->connector = NULL;
342 }
343
344 return ret;
345}
346
347/*
348 * The hdmi device:
349 */
350
351#define HDMI_CFG(item, entry) \
352 .item ## _names = item ##_names_ ## entry, \
353 .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
354
355static const char *pwr_reg_names_none[] = {};
356static const char *hpd_reg_names_none[] = {};
357
358static struct hdmi_platform_config hdmi_tx_8660_config;
359
360static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
361static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
362
363static struct hdmi_platform_config hdmi_tx_8960_config = {
364 HDMI_CFG(hpd_reg, 8960),
365 HDMI_CFG(hpd_clk, 8960),
366};
367
368static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
369static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
370static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"};
371static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
372static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
373
374static struct hdmi_platform_config hdmi_tx_8974_config = {
375 HDMI_CFG(pwr_reg, 8x74),
376 HDMI_CFG(hpd_reg, 8x74),
377 HDMI_CFG(pwr_clk, 8x74),
378 HDMI_CFG(hpd_clk, 8x74),
379 .hpd_freq = hpd_clk_freq_8x74,
380};
381
382static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
383
384static struct hdmi_platform_config hdmi_tx_8084_config = {
385 HDMI_CFG(pwr_reg, 8x74),
386 HDMI_CFG(hpd_reg, 8084),
387 HDMI_CFG(pwr_clk, 8x74),
388 HDMI_CFG(hpd_clk, 8x74),
389 .hpd_freq = hpd_clk_freq_8x74,
390};
391
392static struct hdmi_platform_config hdmi_tx_8994_config = {
393 HDMI_CFG(pwr_reg, 8x74),
394 HDMI_CFG(hpd_reg, none),
395 HDMI_CFG(pwr_clk, 8x74),
396 HDMI_CFG(hpd_clk, 8x74),
397 .hpd_freq = hpd_clk_freq_8x74,
398};
399
400static struct hdmi_platform_config hdmi_tx_8996_config = {
401 HDMI_CFG(pwr_reg, none),
402 HDMI_CFG(hpd_reg, none),
403 HDMI_CFG(pwr_clk, 8x74),
404 HDMI_CFG(hpd_clk, 8x74),
405 .hpd_freq = hpd_clk_freq_8x74,
406};
407
408static const struct {
409 const char *name;
410 const bool output;
411 const int value;
412 const char *label;
413} msm_hdmi_gpio_pdata[] = {
414 { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
415 { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
416 { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
417 { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
418 { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
419 { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
420};
421
422static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
423{
424 int gpio = of_get_named_gpio(of_node, name, 0);
425 if (gpio < 0) {
426 char name2[32];
427 snprintf(name2, sizeof(name2), "%s-gpio", name);
428 gpio = of_get_named_gpio(of_node, name2, 0);
429 if (gpio < 0) {
430 DBG("failed to get gpio: %s (%d)", name, gpio);
431 gpio = -1;
432 }
433 }
434 return gpio;
435}
436
437static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
438{
439 struct drm_device *drm = dev_get_drvdata(master);
440 struct msm_drm_private *priv = drm->dev_private;
441 static struct hdmi_platform_config *hdmi_cfg;
442 struct hdmi *hdmi;
443 struct device_node *of_node = dev->of_node;
444 int i;
445
446 hdmi_cfg = (struct hdmi_platform_config *)
447 of_device_get_match_data(dev);
448 if (!hdmi_cfg) {
449 dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
450 return -ENXIO;
451 }
452
453 hdmi_cfg->mmio_name = "core_physical";
454 hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
455
456 for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
457 hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
458 msm_hdmi_gpio_pdata[i].name);
459 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
460 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
461 hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
462 }
463
464 dev->platform_data = hdmi_cfg;
465
466 hdmi = msm_hdmi_init(to_platform_device(dev));
467 if (IS_ERR(hdmi))
468 return PTR_ERR(hdmi);
469 priv->hdmi = hdmi;
470
471 return 0;
472}
473
474static void msm_hdmi_unbind(struct device *dev, struct device *master,
475 void *data)
476{
477 struct drm_device *drm = dev_get_drvdata(master);
478 struct msm_drm_private *priv = drm->dev_private;
479 if (priv->hdmi) {
480 msm_hdmi_destroy(priv->hdmi);
481 priv->hdmi = NULL;
482 }
483}
484
485static const struct component_ops msm_hdmi_ops = {
486 .bind = msm_hdmi_bind,
487 .unbind = msm_hdmi_unbind,
488};
489
490static int msm_hdmi_dev_probe(struct platform_device *pdev)
491{
492 return component_add(&pdev->dev, &msm_hdmi_ops);
493}
494
495static int msm_hdmi_dev_remove(struct platform_device *pdev)
496{
497 component_del(&pdev->dev, &msm_hdmi_ops);
498 return 0;
499}
500
501static const struct of_device_id msm_hdmi_dt_match[] = {
502 { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
503 { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
504 { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
505 { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
506 { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
507 { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
508 {}
509};
510
511static struct platform_driver msm_hdmi_driver = {
512 .probe = msm_hdmi_dev_probe,
513 .remove = msm_hdmi_dev_remove,
514 .driver = {
515 .name = "hdmi_msm",
516 .of_match_table = msm_hdmi_dt_match,
517 },
518};
519
520void __init msm_hdmi_register(void)
521{
522 msm_hdmi_phy_driver_register();
523 platform_driver_register(&msm_hdmi_driver);
524}
525
526void __exit msm_hdmi_unregister(void)
527{
528 platform_driver_unregister(&msm_hdmi_driver);
529 msm_hdmi_phy_driver_unregister();
530}
1/*
2 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#include <linux/of_irq.h>
20#include <linux/of_gpio.h>
21
22#include <sound/hdmi-codec.h>
23#include "hdmi.h"
24
25void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
26{
27 uint32_t ctrl = 0;
28 unsigned long flags;
29
30 spin_lock_irqsave(&hdmi->reg_lock, flags);
31 if (power_on) {
32 ctrl |= HDMI_CTRL_ENABLE;
33 if (!hdmi->hdmi_mode) {
34 ctrl |= HDMI_CTRL_HDMI;
35 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
36 ctrl &= ~HDMI_CTRL_HDMI;
37 } else {
38 ctrl |= HDMI_CTRL_HDMI;
39 }
40 } else {
41 ctrl = HDMI_CTRL_HDMI;
42 }
43
44 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
45 spin_unlock_irqrestore(&hdmi->reg_lock, flags);
46 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
47 power_on ? "Enable" : "Disable", ctrl);
48}
49
50static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
51{
52 struct hdmi *hdmi = dev_id;
53
54 /* Process HPD: */
55 msm_hdmi_connector_irq(hdmi->connector);
56
57 /* Process DDC: */
58 msm_hdmi_i2c_irq(hdmi->i2c);
59
60 /* Process HDCP: */
61 if (hdmi->hdcp_ctrl)
62 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
63
64 /* TODO audio.. */
65
66 return IRQ_HANDLED;
67}
68
69static void msm_hdmi_destroy(struct hdmi *hdmi)
70{
71 /*
72 * at this point, hpd has been disabled,
73 * after flush workq, it's safe to deinit hdcp
74 */
75 if (hdmi->workq) {
76 flush_workqueue(hdmi->workq);
77 destroy_workqueue(hdmi->workq);
78 }
79 msm_hdmi_hdcp_destroy(hdmi);
80
81 if (hdmi->phy_dev) {
82 put_device(hdmi->phy_dev);
83 hdmi->phy = NULL;
84 hdmi->phy_dev = NULL;
85 }
86
87 if (hdmi->i2c)
88 msm_hdmi_i2c_destroy(hdmi->i2c);
89
90 platform_set_drvdata(hdmi->pdev, NULL);
91}
92
93static int msm_hdmi_get_phy(struct hdmi *hdmi)
94{
95 struct platform_device *pdev = hdmi->pdev;
96 struct platform_device *phy_pdev;
97 struct device_node *phy_node;
98
99 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
100 if (!phy_node) {
101 dev_err(&pdev->dev, "cannot find phy device\n");
102 return -ENXIO;
103 }
104
105 phy_pdev = of_find_device_by_node(phy_node);
106 if (phy_pdev)
107 hdmi->phy = platform_get_drvdata(phy_pdev);
108
109 of_node_put(phy_node);
110
111 if (!phy_pdev || !hdmi->phy) {
112 dev_err(&pdev->dev, "phy driver is not ready\n");
113 return -EPROBE_DEFER;
114 }
115
116 hdmi->phy_dev = get_device(&phy_pdev->dev);
117
118 return 0;
119}
120
121/* construct hdmi at bind/probe time, grab all the resources. If
122 * we are to EPROBE_DEFER we want to do it here, rather than later
123 * at modeset_init() time
124 */
125static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
126{
127 struct hdmi_platform_config *config = pdev->dev.platform_data;
128 struct hdmi *hdmi = NULL;
129 struct resource *res;
130 int i, ret;
131
132 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
133 if (!hdmi) {
134 ret = -ENOMEM;
135 goto fail;
136 }
137
138 hdmi->pdev = pdev;
139 hdmi->config = config;
140 spin_lock_init(&hdmi->reg_lock);
141
142 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
143 if (IS_ERR(hdmi->mmio)) {
144 ret = PTR_ERR(hdmi->mmio);
145 goto fail;
146 }
147
148 /* HDCP needs physical address of hdmi register */
149 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
150 config->mmio_name);
151 hdmi->mmio_phy_addr = res->start;
152
153 hdmi->qfprom_mmio = msm_ioremap(pdev,
154 config->qfprom_mmio_name, "HDMI_QFPROM");
155 if (IS_ERR(hdmi->qfprom_mmio)) {
156 dev_info(&pdev->dev, "can't find qfprom resource\n");
157 hdmi->qfprom_mmio = NULL;
158 }
159
160 hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
161 config->hpd_reg_cnt, GFP_KERNEL);
162 if (!hdmi->hpd_regs) {
163 ret = -ENOMEM;
164 goto fail;
165 }
166 for (i = 0; i < config->hpd_reg_cnt; i++) {
167 struct regulator *reg;
168
169 reg = devm_regulator_get(&pdev->dev,
170 config->hpd_reg_names[i]);
171 if (IS_ERR(reg)) {
172 ret = PTR_ERR(reg);
173 dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
174 config->hpd_reg_names[i], ret);
175 goto fail;
176 }
177
178 hdmi->hpd_regs[i] = reg;
179 }
180
181 hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
182 config->pwr_reg_cnt, GFP_KERNEL);
183 if (!hdmi->pwr_regs) {
184 ret = -ENOMEM;
185 goto fail;
186 }
187 for (i = 0; i < config->pwr_reg_cnt; i++) {
188 struct regulator *reg;
189
190 reg = devm_regulator_get(&pdev->dev,
191 config->pwr_reg_names[i]);
192 if (IS_ERR(reg)) {
193 ret = PTR_ERR(reg);
194 dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
195 config->pwr_reg_names[i], ret);
196 goto fail;
197 }
198
199 hdmi->pwr_regs[i] = reg;
200 }
201
202 hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
203 config->hpd_clk_cnt, GFP_KERNEL);
204 if (!hdmi->hpd_clks) {
205 ret = -ENOMEM;
206 goto fail;
207 }
208 for (i = 0; i < config->hpd_clk_cnt; i++) {
209 struct clk *clk;
210
211 clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
212 if (IS_ERR(clk)) {
213 ret = PTR_ERR(clk);
214 dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
215 config->hpd_clk_names[i], ret);
216 goto fail;
217 }
218
219 hdmi->hpd_clks[i] = clk;
220 }
221
222 hdmi->pwr_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
223 config->pwr_clk_cnt, GFP_KERNEL);
224 if (!hdmi->pwr_clks) {
225 ret = -ENOMEM;
226 goto fail;
227 }
228 for (i = 0; i < config->pwr_clk_cnt; i++) {
229 struct clk *clk;
230
231 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
232 if (IS_ERR(clk)) {
233 ret = PTR_ERR(clk);
234 dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
235 config->pwr_clk_names[i], ret);
236 goto fail;
237 }
238
239 hdmi->pwr_clks[i] = clk;
240 }
241
242 hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
243
244 hdmi->i2c = msm_hdmi_i2c_init(hdmi);
245 if (IS_ERR(hdmi->i2c)) {
246 ret = PTR_ERR(hdmi->i2c);
247 dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
248 hdmi->i2c = NULL;
249 goto fail;
250 }
251
252 ret = msm_hdmi_get_phy(hdmi);
253 if (ret) {
254 dev_err(&pdev->dev, "failed to get phy\n");
255 goto fail;
256 }
257
258 hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
259 if (IS_ERR(hdmi->hdcp_ctrl)) {
260 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
261 hdmi->hdcp_ctrl = NULL;
262 }
263
264 return hdmi;
265
266fail:
267 if (hdmi)
268 msm_hdmi_destroy(hdmi);
269
270 return ERR_PTR(ret);
271}
272
273/* Second part of initialization, the drm/kms level modeset_init,
274 * constructs/initializes mode objects, etc, is called from master
275 * driver (not hdmi sub-device's probe/bind!)
276 *
277 * Any resource (regulator/clk/etc) which could be missing at boot
278 * should be handled in msm_hdmi_init() so that failure happens from
279 * hdmi sub-device's probe.
280 */
281int msm_hdmi_modeset_init(struct hdmi *hdmi,
282 struct drm_device *dev, struct drm_encoder *encoder)
283{
284 struct msm_drm_private *priv = dev->dev_private;
285 struct platform_device *pdev = hdmi->pdev;
286 int ret;
287
288 hdmi->dev = dev;
289 hdmi->encoder = encoder;
290
291 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
292
293 hdmi->bridge = msm_hdmi_bridge_init(hdmi);
294 if (IS_ERR(hdmi->bridge)) {
295 ret = PTR_ERR(hdmi->bridge);
296 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
297 hdmi->bridge = NULL;
298 goto fail;
299 }
300
301 hdmi->connector = msm_hdmi_connector_init(hdmi);
302 if (IS_ERR(hdmi->connector)) {
303 ret = PTR_ERR(hdmi->connector);
304 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
305 hdmi->connector = NULL;
306 goto fail;
307 }
308
309 hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
310 if (hdmi->irq < 0) {
311 ret = hdmi->irq;
312 dev_err(dev->dev, "failed to get irq: %d\n", ret);
313 goto fail;
314 }
315
316 ret = devm_request_irq(&pdev->dev, hdmi->irq,
317 msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
318 "hdmi_isr", hdmi);
319 if (ret < 0) {
320 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
321 hdmi->irq, ret);
322 goto fail;
323 }
324
325 encoder->bridge = hdmi->bridge;
326
327 priv->bridges[priv->num_bridges++] = hdmi->bridge;
328 priv->connectors[priv->num_connectors++] = hdmi->connector;
329
330 platform_set_drvdata(pdev, hdmi);
331
332 return 0;
333
334fail:
335 /* bridge is normally destroyed by drm: */
336 if (hdmi->bridge) {
337 msm_hdmi_bridge_destroy(hdmi->bridge);
338 hdmi->bridge = NULL;
339 }
340 if (hdmi->connector) {
341 hdmi->connector->funcs->destroy(hdmi->connector);
342 hdmi->connector = NULL;
343 }
344
345 return ret;
346}
347
348/*
349 * The hdmi device:
350 */
351
352#define HDMI_CFG(item, entry) \
353 .item ## _names = item ##_names_ ## entry, \
354 .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
355
356static const char *pwr_reg_names_none[] = {};
357static const char *hpd_reg_names_none[] = {};
358
359static struct hdmi_platform_config hdmi_tx_8660_config;
360
361static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
362static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
363
364static struct hdmi_platform_config hdmi_tx_8960_config = {
365 HDMI_CFG(hpd_reg, 8960),
366 HDMI_CFG(hpd_clk, 8960),
367};
368
369static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
370static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
371static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"};
372static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
373static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
374
375static struct hdmi_platform_config hdmi_tx_8974_config = {
376 HDMI_CFG(pwr_reg, 8x74),
377 HDMI_CFG(hpd_reg, 8x74),
378 HDMI_CFG(pwr_clk, 8x74),
379 HDMI_CFG(hpd_clk, 8x74),
380 .hpd_freq = hpd_clk_freq_8x74,
381};
382
383static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
384
385static struct hdmi_platform_config hdmi_tx_8084_config = {
386 HDMI_CFG(pwr_reg, 8x74),
387 HDMI_CFG(hpd_reg, 8084),
388 HDMI_CFG(pwr_clk, 8x74),
389 HDMI_CFG(hpd_clk, 8x74),
390 .hpd_freq = hpd_clk_freq_8x74,
391};
392
393static struct hdmi_platform_config hdmi_tx_8994_config = {
394 HDMI_CFG(pwr_reg, 8x74),
395 HDMI_CFG(hpd_reg, none),
396 HDMI_CFG(pwr_clk, 8x74),
397 HDMI_CFG(hpd_clk, 8x74),
398 .hpd_freq = hpd_clk_freq_8x74,
399};
400
401static struct hdmi_platform_config hdmi_tx_8996_config = {
402 HDMI_CFG(pwr_reg, none),
403 HDMI_CFG(hpd_reg, none),
404 HDMI_CFG(pwr_clk, 8x74),
405 HDMI_CFG(hpd_clk, 8x74),
406 .hpd_freq = hpd_clk_freq_8x74,
407};
408
409static const struct {
410 const char *name;
411 const bool output;
412 const int value;
413 const char *label;
414} msm_hdmi_gpio_pdata[] = {
415 { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
416 { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
417 { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
418 { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
419 { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
420 { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
421};
422
423static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
424{
425 int gpio;
426
427 /* try with the gpio names as in the table (downstream bindings) */
428 gpio = of_get_named_gpio(of_node, name, 0);
429 if (gpio < 0) {
430 char name2[32];
431
432 /* try with the gpio names as in the upstream bindings */
433 snprintf(name2, sizeof(name2), "%s-gpios", name);
434 gpio = of_get_named_gpio(of_node, name2, 0);
435 if (gpio < 0) {
436 char name3[32];
437
438 /*
439 * try again after stripping out the "qcom,hdmi-tx"
440 * prefix. This is mainly to match "hpd-gpios" used
441 * in the upstream bindings
442 */
443 if (sscanf(name2, "qcom,hdmi-tx-%s", name3))
444 gpio = of_get_named_gpio(of_node, name3, 0);
445 }
446
447 if (gpio < 0) {
448 DBG("failed to get gpio: %s (%d)", name, gpio);
449 gpio = -1;
450 }
451 }
452 return gpio;
453}
454
455/*
456 * HDMI audio codec callbacks
457 */
458static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
459 struct hdmi_codec_daifmt *daifmt,
460 struct hdmi_codec_params *params)
461{
462 struct hdmi *hdmi = dev_get_drvdata(dev);
463 unsigned int chan;
464 unsigned int channel_allocation = 0;
465 unsigned int rate;
466 unsigned int level_shift = 0; /* 0dB */
467 bool down_mix = false;
468
469 dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
470 params->sample_width, params->cea.channels);
471
472 switch (params->cea.channels) {
473 case 2:
474 /* FR and FL speakers */
475 channel_allocation = 0;
476 chan = MSM_HDMI_AUDIO_CHANNEL_2;
477 break;
478 case 4:
479 /* FC, LFE, FR and FL speakers */
480 channel_allocation = 0x3;
481 chan = MSM_HDMI_AUDIO_CHANNEL_4;
482 break;
483 case 6:
484 /* RR, RL, FC, LFE, FR and FL speakers */
485 channel_allocation = 0x0B;
486 chan = MSM_HDMI_AUDIO_CHANNEL_6;
487 break;
488 case 8:
489 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
490 channel_allocation = 0x1F;
491 chan = MSM_HDMI_AUDIO_CHANNEL_8;
492 break;
493 default:
494 return -EINVAL;
495 }
496
497 switch (params->sample_rate) {
498 case 32000:
499 rate = HDMI_SAMPLE_RATE_32KHZ;
500 break;
501 case 44100:
502 rate = HDMI_SAMPLE_RATE_44_1KHZ;
503 break;
504 case 48000:
505 rate = HDMI_SAMPLE_RATE_48KHZ;
506 break;
507 case 88200:
508 rate = HDMI_SAMPLE_RATE_88_2KHZ;
509 break;
510 case 96000:
511 rate = HDMI_SAMPLE_RATE_96KHZ;
512 break;
513 case 176400:
514 rate = HDMI_SAMPLE_RATE_176_4KHZ;
515 break;
516 case 192000:
517 rate = HDMI_SAMPLE_RATE_192KHZ;
518 break;
519 default:
520 dev_err(dev, "rate[%d] not supported!\n",
521 params->sample_rate);
522 return -EINVAL;
523 }
524
525 msm_hdmi_audio_set_sample_rate(hdmi, rate);
526 msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
527 level_shift, down_mix);
528
529 return 0;
530}
531
532static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
533{
534 struct hdmi *hdmi = dev_get_drvdata(dev);
535
536 msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
537}
538
539static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
540 .hw_params = msm_hdmi_audio_hw_params,
541 .audio_shutdown = msm_hdmi_audio_shutdown,
542};
543
544static struct hdmi_codec_pdata codec_data = {
545 .ops = &msm_hdmi_audio_codec_ops,
546 .max_i2s_channels = 8,
547 .i2s = 1,
548};
549
550static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
551{
552 hdmi->audio_pdev = platform_device_register_data(dev,
553 HDMI_CODEC_DRV_NAME,
554 PLATFORM_DEVID_AUTO,
555 &codec_data,
556 sizeof(codec_data));
557 return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
558}
559
560static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
561{
562 struct drm_device *drm = dev_get_drvdata(master);
563 struct msm_drm_private *priv = drm->dev_private;
564 static struct hdmi_platform_config *hdmi_cfg;
565 struct hdmi *hdmi;
566 struct device_node *of_node = dev->of_node;
567 int i, err;
568
569 hdmi_cfg = (struct hdmi_platform_config *)
570 of_device_get_match_data(dev);
571 if (!hdmi_cfg) {
572 dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
573 return -ENXIO;
574 }
575
576 hdmi_cfg->mmio_name = "core_physical";
577 hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
578
579 for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
580 hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
581 msm_hdmi_gpio_pdata[i].name);
582 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
583 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
584 hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
585 }
586
587 dev->platform_data = hdmi_cfg;
588
589 hdmi = msm_hdmi_init(to_platform_device(dev));
590 if (IS_ERR(hdmi))
591 return PTR_ERR(hdmi);
592 priv->hdmi = hdmi;
593
594 err = msm_hdmi_register_audio_driver(hdmi, dev);
595 if (err) {
596 DRM_ERROR("Failed to attach an audio codec %d\n", err);
597 hdmi->audio_pdev = NULL;
598 }
599
600 return 0;
601}
602
603static void msm_hdmi_unbind(struct device *dev, struct device *master,
604 void *data)
605{
606 struct drm_device *drm = dev_get_drvdata(master);
607 struct msm_drm_private *priv = drm->dev_private;
608 if (priv->hdmi) {
609 if (priv->hdmi->audio_pdev)
610 platform_device_unregister(priv->hdmi->audio_pdev);
611
612 msm_hdmi_destroy(priv->hdmi);
613 priv->hdmi = NULL;
614 }
615}
616
617static const struct component_ops msm_hdmi_ops = {
618 .bind = msm_hdmi_bind,
619 .unbind = msm_hdmi_unbind,
620};
621
622static int msm_hdmi_dev_probe(struct platform_device *pdev)
623{
624 return component_add(&pdev->dev, &msm_hdmi_ops);
625}
626
627static int msm_hdmi_dev_remove(struct platform_device *pdev)
628{
629 component_del(&pdev->dev, &msm_hdmi_ops);
630 return 0;
631}
632
633static const struct of_device_id msm_hdmi_dt_match[] = {
634 { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
635 { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
636 { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
637 { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
638 { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
639 { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
640 {}
641};
642
643static struct platform_driver msm_hdmi_driver = {
644 .probe = msm_hdmi_dev_probe,
645 .remove = msm_hdmi_dev_remove,
646 .driver = {
647 .name = "hdmi_msm",
648 .of_match_table = msm_hdmi_dt_match,
649 },
650};
651
652void __init msm_hdmi_register(void)
653{
654 msm_hdmi_phy_driver_register();
655 platform_driver_register(&msm_hdmi_driver);
656}
657
658void __exit msm_hdmi_unregister(void)
659{
660 platform_driver_unregister(&msm_hdmi_driver);
661 msm_hdmi_phy_driver_unregister();
662}