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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// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
4 * Copyright (C) 2013 Red Hat
5 * Author: Rob Clark <robdclark@gmail.com>
6 */
7
8#include <linux/gpio/consumer.h>
9#include <linux/of_irq.h>
10#include <linux/of_platform.h>
11#include <linux/platform_device.h>
12
13#include <drm/drm_bridge_connector.h>
14#include <drm/drm_of.h>
15
16#include <sound/hdmi-codec.h>
17#include "hdmi.h"
18
19void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
20{
21 uint32_t ctrl = 0;
22 unsigned long flags;
23
24 spin_lock_irqsave(&hdmi->reg_lock, flags);
25 if (power_on) {
26 ctrl |= HDMI_CTRL_ENABLE;
27 if (!hdmi->hdmi_mode) {
28 ctrl |= HDMI_CTRL_HDMI;
29 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
30 ctrl &= ~HDMI_CTRL_HDMI;
31 } else {
32 ctrl |= HDMI_CTRL_HDMI;
33 }
34 } else {
35 ctrl = HDMI_CTRL_HDMI;
36 }
37
38 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
39 spin_unlock_irqrestore(&hdmi->reg_lock, flags);
40 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
41 power_on ? "Enable" : "Disable", ctrl);
42}
43
44static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
45{
46 struct hdmi *hdmi = dev_id;
47
48 /* Process HPD: */
49 msm_hdmi_hpd_irq(hdmi->bridge);
50
51 /* Process DDC: */
52 msm_hdmi_i2c_irq(hdmi->i2c);
53
54 /* Process HDCP: */
55 if (hdmi->hdcp_ctrl)
56 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
57
58 /* TODO audio.. */
59
60 return IRQ_HANDLED;
61}
62
63static void msm_hdmi_destroy(struct hdmi *hdmi)
64{
65 /*
66 * at this point, hpd has been disabled,
67 * after flush workq, it's safe to deinit hdcp
68 */
69 if (hdmi->workq)
70 destroy_workqueue(hdmi->workq);
71 msm_hdmi_hdcp_destroy(hdmi);
72
73 if (hdmi->i2c)
74 msm_hdmi_i2c_destroy(hdmi->i2c);
75}
76
77static void msm_hdmi_put_phy(struct hdmi *hdmi)
78{
79 if (hdmi->phy_dev) {
80 put_device(hdmi->phy_dev);
81 hdmi->phy = NULL;
82 hdmi->phy_dev = NULL;
83 }
84}
85
86static int msm_hdmi_get_phy(struct hdmi *hdmi)
87{
88 struct platform_device *pdev = hdmi->pdev;
89 struct platform_device *phy_pdev;
90 struct device_node *phy_node;
91
92 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
93 if (!phy_node) {
94 DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
95 return -ENXIO;
96 }
97
98 phy_pdev = of_find_device_by_node(phy_node);
99 of_node_put(phy_node);
100
101 if (!phy_pdev)
102 return dev_err_probe(&pdev->dev, -EPROBE_DEFER, "phy driver is not ready\n");
103
104 hdmi->phy = platform_get_drvdata(phy_pdev);
105 if (!hdmi->phy) {
106 put_device(&phy_pdev->dev);
107 return dev_err_probe(&pdev->dev, -EPROBE_DEFER, "phy driver is not ready\n");
108 }
109
110 hdmi->phy_dev = &phy_pdev->dev;
111
112 return 0;
113}
114
115/* construct hdmi at bind/probe time, grab all the resources. If
116 * we are to EPROBE_DEFER we want to do it here, rather than later
117 * at modeset_init() time
118 */
119static int msm_hdmi_init(struct hdmi *hdmi)
120{
121 struct platform_device *pdev = hdmi->pdev;
122 int ret;
123
124 hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
125 if (!hdmi->workq) {
126 ret = -ENOMEM;
127 goto fail;
128 }
129
130 hdmi->i2c = msm_hdmi_i2c_init(hdmi);
131 if (IS_ERR(hdmi->i2c)) {
132 ret = PTR_ERR(hdmi->i2c);
133 DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
134 hdmi->i2c = NULL;
135 goto fail;
136 }
137
138 hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
139 if (IS_ERR(hdmi->hdcp_ctrl)) {
140 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
141 hdmi->hdcp_ctrl = NULL;
142 }
143
144 return 0;
145
146fail:
147 msm_hdmi_destroy(hdmi);
148
149 return ret;
150}
151
152/* Second part of initialization, the drm/kms level modeset_init,
153 * constructs/initializes mode objects, etc, is called from master
154 * driver (not hdmi sub-device's probe/bind!)
155 *
156 * Any resource (regulator/clk/etc) which could be missing at boot
157 * should be handled in msm_hdmi_init() so that failure happens from
158 * hdmi sub-device's probe.
159 */
160int msm_hdmi_modeset_init(struct hdmi *hdmi,
161 struct drm_device *dev, struct drm_encoder *encoder)
162{
163 int ret;
164
165 hdmi->dev = dev;
166 hdmi->encoder = encoder;
167
168 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
169
170 ret = msm_hdmi_bridge_init(hdmi);
171 if (ret) {
172 DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
173 goto fail;
174 }
175
176 if (hdmi->next_bridge) {
177 ret = drm_bridge_attach(hdmi->encoder, hdmi->next_bridge, hdmi->bridge,
178 DRM_BRIDGE_ATTACH_NO_CONNECTOR);
179 if (ret) {
180 DRM_DEV_ERROR(dev->dev, "failed to attach next HDMI bridge: %d\n", ret);
181 goto fail;
182 }
183 }
184
185 hdmi->connector = drm_bridge_connector_init(hdmi->dev, encoder);
186 if (IS_ERR(hdmi->connector)) {
187 ret = PTR_ERR(hdmi->connector);
188 DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
189 hdmi->connector = NULL;
190 goto fail;
191 }
192
193 drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
194
195 ret = devm_request_irq(dev->dev, hdmi->irq,
196 msm_hdmi_irq, IRQF_TRIGGER_HIGH,
197 "hdmi_isr", hdmi);
198 if (ret < 0) {
199 DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
200 hdmi->irq, ret);
201 goto fail;
202 }
203
204 ret = msm_hdmi_hpd_enable(hdmi->bridge);
205 if (ret < 0) {
206 DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
207 goto fail;
208 }
209
210 return 0;
211
212fail:
213 if (hdmi->connector) {
214 hdmi->connector->funcs->destroy(hdmi->connector);
215 hdmi->connector = NULL;
216 }
217
218 return ret;
219}
220
221/*
222 * The hdmi device:
223 */
224
225#define HDMI_CFG(item, entry) \
226 .item ## _names = item ##_names_ ## entry, \
227 .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
228
229static const char *hpd_reg_names_8960[] = {"core-vdda"};
230static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
231
232static const struct hdmi_platform_config hdmi_tx_8960_config = {
233 HDMI_CFG(hpd_reg, 8960),
234 HDMI_CFG(hpd_clk, 8960),
235};
236
237static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
238static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
239static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
240static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
241
242static const struct hdmi_platform_config hdmi_tx_8974_config = {
243 HDMI_CFG(pwr_reg, 8x74),
244 HDMI_CFG(pwr_clk, 8x74),
245 HDMI_CFG(hpd_clk, 8x74),
246 .hpd_freq = hpd_clk_freq_8x74,
247};
248
249/*
250 * HDMI audio codec callbacks
251 */
252static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
253 struct hdmi_codec_daifmt *daifmt,
254 struct hdmi_codec_params *params)
255{
256 struct hdmi *hdmi = dev_get_drvdata(dev);
257 unsigned int chan;
258 unsigned int channel_allocation = 0;
259 unsigned int rate;
260 unsigned int level_shift = 0; /* 0dB */
261 bool down_mix = false;
262
263 DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
264 params->sample_width, params->cea.channels);
265
266 switch (params->cea.channels) {
267 case 2:
268 /* FR and FL speakers */
269 channel_allocation = 0;
270 chan = MSM_HDMI_AUDIO_CHANNEL_2;
271 break;
272 case 4:
273 /* FC, LFE, FR and FL speakers */
274 channel_allocation = 0x3;
275 chan = MSM_HDMI_AUDIO_CHANNEL_4;
276 break;
277 case 6:
278 /* RR, RL, FC, LFE, FR and FL speakers */
279 channel_allocation = 0x0B;
280 chan = MSM_HDMI_AUDIO_CHANNEL_6;
281 break;
282 case 8:
283 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
284 channel_allocation = 0x1F;
285 chan = MSM_HDMI_AUDIO_CHANNEL_8;
286 break;
287 default:
288 return -EINVAL;
289 }
290
291 switch (params->sample_rate) {
292 case 32000:
293 rate = HDMI_SAMPLE_RATE_32KHZ;
294 break;
295 case 44100:
296 rate = HDMI_SAMPLE_RATE_44_1KHZ;
297 break;
298 case 48000:
299 rate = HDMI_SAMPLE_RATE_48KHZ;
300 break;
301 case 88200:
302 rate = HDMI_SAMPLE_RATE_88_2KHZ;
303 break;
304 case 96000:
305 rate = HDMI_SAMPLE_RATE_96KHZ;
306 break;
307 case 176400:
308 rate = HDMI_SAMPLE_RATE_176_4KHZ;
309 break;
310 case 192000:
311 rate = HDMI_SAMPLE_RATE_192KHZ;
312 break;
313 default:
314 DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
315 params->sample_rate);
316 return -EINVAL;
317 }
318
319 msm_hdmi_audio_set_sample_rate(hdmi, rate);
320 msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
321 level_shift, down_mix);
322
323 return 0;
324}
325
326static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
327{
328 struct hdmi *hdmi = dev_get_drvdata(dev);
329
330 msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
331}
332
333static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
334 .hw_params = msm_hdmi_audio_hw_params,
335 .audio_shutdown = msm_hdmi_audio_shutdown,
336};
337
338static struct hdmi_codec_pdata codec_data = {
339 .ops = &msm_hdmi_audio_codec_ops,
340 .max_i2s_channels = 8,
341 .i2s = 1,
342};
343
344static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
345{
346 hdmi->audio_pdev = platform_device_register_data(dev,
347 HDMI_CODEC_DRV_NAME,
348 PLATFORM_DEVID_AUTO,
349 &codec_data,
350 sizeof(codec_data));
351 return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
352}
353
354static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
355{
356 struct msm_drm_private *priv = dev_get_drvdata(master);
357 struct hdmi *hdmi = dev_get_drvdata(dev);
358 int err;
359
360 err = msm_hdmi_init(hdmi);
361 if (err)
362 return err;
363 priv->hdmi = hdmi;
364
365 err = msm_hdmi_register_audio_driver(hdmi, dev);
366 if (err) {
367 DRM_ERROR("Failed to attach an audio codec %d\n", err);
368 hdmi->audio_pdev = NULL;
369 }
370
371 return 0;
372}
373
374static void msm_hdmi_unbind(struct device *dev, struct device *master,
375 void *data)
376{
377 struct msm_drm_private *priv = dev_get_drvdata(master);
378
379 if (priv->hdmi) {
380 if (priv->hdmi->audio_pdev)
381 platform_device_unregister(priv->hdmi->audio_pdev);
382
383 if (priv->hdmi->bridge)
384 msm_hdmi_hpd_disable(priv->hdmi);
385
386 msm_hdmi_destroy(priv->hdmi);
387 priv->hdmi = NULL;
388 }
389}
390
391static const struct component_ops msm_hdmi_ops = {
392 .bind = msm_hdmi_bind,
393 .unbind = msm_hdmi_unbind,
394};
395
396static int msm_hdmi_dev_probe(struct platform_device *pdev)
397{
398 const struct hdmi_platform_config *config;
399 struct device *dev = &pdev->dev;
400 struct hdmi *hdmi;
401 struct resource *res;
402 int i, ret;
403
404 config = of_device_get_match_data(dev);
405 if (!config)
406 return -EINVAL;
407
408 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
409 if (!hdmi)
410 return -ENOMEM;
411
412 hdmi->pdev = pdev;
413 hdmi->config = config;
414 spin_lock_init(&hdmi->reg_lock);
415
416 ret = drm_of_find_panel_or_bridge(pdev->dev.of_node, 1, 0, NULL, &hdmi->next_bridge);
417 if (ret && ret != -ENODEV)
418 return ret;
419
420 hdmi->mmio = msm_ioremap(pdev, "core_physical");
421 if (IS_ERR(hdmi->mmio))
422 return PTR_ERR(hdmi->mmio);
423
424 /* HDCP needs physical address of hdmi register */
425 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
426 "core_physical");
427 if (!res)
428 return -EINVAL;
429 hdmi->mmio_phy_addr = res->start;
430
431 hdmi->qfprom_mmio = msm_ioremap(pdev, "qfprom_physical");
432 if (IS_ERR(hdmi->qfprom_mmio)) {
433 DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
434 hdmi->qfprom_mmio = NULL;
435 }
436
437 hdmi->irq = platform_get_irq(pdev, 0);
438 if (hdmi->irq < 0)
439 return hdmi->irq;
440
441 hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
442 config->hpd_reg_cnt,
443 sizeof(hdmi->hpd_regs[0]),
444 GFP_KERNEL);
445 if (!hdmi->hpd_regs)
446 return -ENOMEM;
447
448 for (i = 0; i < config->hpd_reg_cnt; i++)
449 hdmi->hpd_regs[i].supply = config->hpd_reg_names[i];
450
451 ret = devm_regulator_bulk_get(&pdev->dev, config->hpd_reg_cnt, hdmi->hpd_regs);
452 if (ret)
453 return dev_err_probe(dev, ret, "failed to get hpd regulators\n");
454
455 hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
456 config->pwr_reg_cnt,
457 sizeof(hdmi->pwr_regs[0]),
458 GFP_KERNEL);
459 if (!hdmi->pwr_regs)
460 return -ENOMEM;
461
462 for (i = 0; i < config->pwr_reg_cnt; i++)
463 hdmi->pwr_regs[i].supply = config->pwr_reg_names[i];
464
465 ret = devm_regulator_bulk_get(&pdev->dev, config->pwr_reg_cnt, hdmi->pwr_regs);
466 if (ret)
467 return dev_err_probe(dev, ret, "failed to get pwr regulators\n");
468
469 hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
470 config->hpd_clk_cnt,
471 sizeof(hdmi->hpd_clks[0]),
472 GFP_KERNEL);
473 if (!hdmi->hpd_clks)
474 return -ENOMEM;
475
476 for (i = 0; i < config->hpd_clk_cnt; i++) {
477 struct clk *clk;
478
479 clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
480 if (IS_ERR(clk))
481 return dev_err_probe(dev, PTR_ERR(clk),
482 "failed to get hpd clk: %s\n",
483 config->hpd_clk_names[i]);
484
485 hdmi->hpd_clks[i] = clk;
486 }
487
488 hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
489 config->pwr_clk_cnt,
490 sizeof(hdmi->pwr_clks[0]),
491 GFP_KERNEL);
492 if (!hdmi->pwr_clks)
493 return -ENOMEM;
494
495 for (i = 0; i < config->pwr_clk_cnt; i++) {
496 struct clk *clk;
497
498 clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
499 if (IS_ERR(clk))
500 return dev_err_probe(dev, PTR_ERR(clk),
501 "failed to get pwr clk: %s\n",
502 config->pwr_clk_names[i]);
503
504 hdmi->pwr_clks[i] = clk;
505 }
506
507 hdmi->hpd_gpiod = devm_gpiod_get_optional(&pdev->dev, "hpd", GPIOD_IN);
508 /* This will catch e.g. -EPROBE_DEFER */
509 if (IS_ERR(hdmi->hpd_gpiod))
510 return dev_err_probe(dev, PTR_ERR(hdmi->hpd_gpiod),
511 "failed to get hpd gpio\n");
512
513 if (!hdmi->hpd_gpiod)
514 DBG("failed to get HPD gpio");
515
516 if (hdmi->hpd_gpiod)
517 gpiod_set_consumer_name(hdmi->hpd_gpiod, "HDMI_HPD");
518
519 ret = msm_hdmi_get_phy(hdmi);
520 if (ret) {
521 DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
522 return ret;
523 }
524
525 ret = devm_pm_runtime_enable(&pdev->dev);
526 if (ret)
527 goto err_put_phy;
528
529 platform_set_drvdata(pdev, hdmi);
530
531 ret = component_add(&pdev->dev, &msm_hdmi_ops);
532 if (ret)
533 goto err_put_phy;
534
535 return 0;
536
537err_put_phy:
538 msm_hdmi_put_phy(hdmi);
539 return ret;
540}
541
542static void msm_hdmi_dev_remove(struct platform_device *pdev)
543{
544 struct hdmi *hdmi = dev_get_drvdata(&pdev->dev);
545
546 component_del(&pdev->dev, &msm_hdmi_ops);
547
548 msm_hdmi_put_phy(hdmi);
549}
550
551static const struct of_device_id msm_hdmi_dt_match[] = {
552 { .compatible = "qcom,hdmi-tx-8998", .data = &hdmi_tx_8974_config },
553 { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8974_config },
554 { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8974_config },
555 { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8974_config },
556 { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
557 { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
558 { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8960_config },
559 {}
560};
561
562static struct platform_driver msm_hdmi_driver = {
563 .probe = msm_hdmi_dev_probe,
564 .remove = msm_hdmi_dev_remove,
565 .driver = {
566 .name = "hdmi_msm",
567 .of_match_table = msm_hdmi_dt_match,
568 },
569};
570
571void __init msm_hdmi_register(void)
572{
573 msm_hdmi_phy_driver_register();
574 platform_driver_register(&msm_hdmi_driver);
575}
576
577void __exit msm_hdmi_unregister(void)
578{
579 platform_driver_unregister(&msm_hdmi_driver);
580 msm_hdmi_phy_driver_unregister();
581}