1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
4 * Copyright (C) 2013 Red Hat
5 * Author: Rob Clark <robdclark@gmail.com>
8 #include <linux/of_irq.h>
9 #include <linux/of_gpio.h>
11 #include <sound/hdmi-codec.h>
14 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
19 spin_lock_irqsave(&hdmi->reg_lock, flags);
21 ctrl |= HDMI_CTRL_ENABLE;
22 if (!hdmi->hdmi_mode) {
23 ctrl |= HDMI_CTRL_HDMI;
24 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
25 ctrl &= ~HDMI_CTRL_HDMI;
27 ctrl |= HDMI_CTRL_HDMI;
30 ctrl = HDMI_CTRL_HDMI;
33 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
34 spin_unlock_irqrestore(&hdmi->reg_lock, flags);
35 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
36 power_on ? "Enable" : "Disable", ctrl);
39 static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
41 struct hdmi *hdmi = dev_id;
44 msm_hdmi_connector_irq(hdmi->connector);
47 msm_hdmi_i2c_irq(hdmi->i2c);
51 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
58 static void msm_hdmi_destroy(struct hdmi *hdmi)
61 * at this point, hpd has been disabled,
62 * after flush workq, it's safe to deinit hdcp
65 flush_workqueue(hdmi->workq);
66 destroy_workqueue(hdmi->workq);
68 msm_hdmi_hdcp_destroy(hdmi);
71 put_device(hdmi->phy_dev);
77 msm_hdmi_i2c_destroy(hdmi->i2c);
79 platform_set_drvdata(hdmi->pdev, NULL);
82 static int msm_hdmi_get_phy(struct hdmi *hdmi)
84 struct platform_device *pdev = hdmi->pdev;
85 struct platform_device *phy_pdev;
86 struct device_node *phy_node;
88 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
90 DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
94 phy_pdev = of_find_device_by_node(phy_node);
96 hdmi->phy = platform_get_drvdata(phy_pdev);
98 of_node_put(phy_node);
100 if (!phy_pdev || !hdmi->phy) {
101 DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
102 return -EPROBE_DEFER;
105 hdmi->phy_dev = get_device(&phy_pdev->dev);
110 /* construct hdmi at bind/probe time, grab all the resources. If
111 * we are to EPROBE_DEFER we want to do it here, rather than later
112 * at modeset_init() time
114 static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
116 struct hdmi_platform_config *config = pdev->dev.platform_data;
117 struct hdmi *hdmi = NULL;
118 struct resource *res;
121 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
128 hdmi->config = config;
129 spin_lock_init(&hdmi->reg_lock);
131 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
132 if (IS_ERR(hdmi->mmio)) {
133 ret = PTR_ERR(hdmi->mmio);
137 /* HDCP needs physical address of hdmi register */
138 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
140 hdmi->mmio_phy_addr = res->start;
142 hdmi->qfprom_mmio = msm_ioremap(pdev,
143 config->qfprom_mmio_name, "HDMI_QFPROM");
144 if (IS_ERR(hdmi->qfprom_mmio)) {
145 DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
146 hdmi->qfprom_mmio = NULL;
149 hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
151 sizeof(hdmi->hpd_regs[0]),
153 if (!hdmi->hpd_regs) {
157 for (i = 0; i < config->hpd_reg_cnt; i++) {
158 struct regulator *reg;
160 reg = devm_regulator_get(&pdev->dev,
161 config->hpd_reg_names[i]);
164 DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
165 config->hpd_reg_names[i], ret);
169 hdmi->hpd_regs[i] = reg;
172 hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
174 sizeof(hdmi->pwr_regs[0]),
176 if (!hdmi->pwr_regs) {
180 for (i = 0; i < config->pwr_reg_cnt; i++) {
181 struct regulator *reg;
183 reg = devm_regulator_get(&pdev->dev,
184 config->pwr_reg_names[i]);
187 DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
188 config->pwr_reg_names[i], ret);
192 hdmi->pwr_regs[i] = reg;
195 hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
197 sizeof(hdmi->hpd_clks[0]),
199 if (!hdmi->hpd_clks) {
203 for (i = 0; i < config->hpd_clk_cnt; i++) {
206 clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
209 DRM_DEV_ERROR(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
210 config->hpd_clk_names[i], ret);
214 hdmi->hpd_clks[i] = clk;
217 hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
219 sizeof(hdmi->pwr_clks[0]),
221 if (!hdmi->pwr_clks) {
225 for (i = 0; i < config->pwr_clk_cnt; i++) {
228 clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
231 DRM_DEV_ERROR(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
232 config->pwr_clk_names[i], ret);
236 hdmi->pwr_clks[i] = clk;
239 pm_runtime_enable(&pdev->dev);
241 hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
243 hdmi->i2c = msm_hdmi_i2c_init(hdmi);
244 if (IS_ERR(hdmi->i2c)) {
245 ret = PTR_ERR(hdmi->i2c);
246 DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
251 ret = msm_hdmi_get_phy(hdmi);
253 DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
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;
267 msm_hdmi_destroy(hdmi);
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!)
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.
280 int msm_hdmi_modeset_init(struct hdmi *hdmi,
281 struct drm_device *dev, struct drm_encoder *encoder)
283 struct msm_drm_private *priv = dev->dev_private;
284 struct platform_device *pdev = hdmi->pdev;
288 hdmi->encoder = encoder;
290 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
292 hdmi->bridge = msm_hdmi_bridge_init(hdmi);
293 if (IS_ERR(hdmi->bridge)) {
294 ret = PTR_ERR(hdmi->bridge);
295 DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
300 hdmi->connector = msm_hdmi_connector_init(hdmi);
301 if (IS_ERR(hdmi->connector)) {
302 ret = PTR_ERR(hdmi->connector);
303 DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
304 hdmi->connector = NULL;
308 hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
311 DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
315 ret = devm_request_irq(&pdev->dev, hdmi->irq,
316 msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
319 DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
324 ret = msm_hdmi_hpd_enable(hdmi->connector);
326 DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
330 encoder->bridge = hdmi->bridge;
332 priv->bridges[priv->num_bridges++] = hdmi->bridge;
333 priv->connectors[priv->num_connectors++] = hdmi->connector;
335 platform_set_drvdata(pdev, hdmi);
340 /* bridge is normally destroyed by drm: */
342 msm_hdmi_bridge_destroy(hdmi->bridge);
345 if (hdmi->connector) {
346 hdmi->connector->funcs->destroy(hdmi->connector);
347 hdmi->connector = NULL;
357 #define HDMI_CFG(item, entry) \
358 .item ## _names = item ##_names_ ## entry, \
359 .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
361 static const char *pwr_reg_names_none[] = {};
362 static const char *hpd_reg_names_none[] = {};
364 static struct hdmi_platform_config hdmi_tx_8660_config;
366 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
367 static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
369 static struct hdmi_platform_config hdmi_tx_8960_config = {
370 HDMI_CFG(hpd_reg, 8960),
371 HDMI_CFG(hpd_clk, 8960),
374 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
375 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
376 static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
377 static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
378 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
380 static struct hdmi_platform_config hdmi_tx_8974_config = {
381 HDMI_CFG(pwr_reg, 8x74),
382 HDMI_CFG(hpd_reg, 8x74),
383 HDMI_CFG(pwr_clk, 8x74),
384 HDMI_CFG(hpd_clk, 8x74),
385 .hpd_freq = hpd_clk_freq_8x74,
388 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
390 static struct hdmi_platform_config hdmi_tx_8084_config = {
391 HDMI_CFG(pwr_reg, 8x74),
392 HDMI_CFG(hpd_reg, 8084),
393 HDMI_CFG(pwr_clk, 8x74),
394 HDMI_CFG(hpd_clk, 8x74),
395 .hpd_freq = hpd_clk_freq_8x74,
398 static struct hdmi_platform_config hdmi_tx_8994_config = {
399 HDMI_CFG(pwr_reg, 8x74),
400 HDMI_CFG(hpd_reg, none),
401 HDMI_CFG(pwr_clk, 8x74),
402 HDMI_CFG(hpd_clk, 8x74),
403 .hpd_freq = hpd_clk_freq_8x74,
406 static struct hdmi_platform_config hdmi_tx_8996_config = {
407 HDMI_CFG(pwr_reg, none),
408 HDMI_CFG(hpd_reg, none),
409 HDMI_CFG(pwr_clk, 8x74),
410 HDMI_CFG(hpd_clk, 8x74),
411 .hpd_freq = hpd_clk_freq_8x74,
414 static const struct {
419 } msm_hdmi_gpio_pdata[] = {
420 { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
421 { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
422 { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
423 { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
424 { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
425 { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
429 * HDMI audio codec callbacks
431 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
432 struct hdmi_codec_daifmt *daifmt,
433 struct hdmi_codec_params *params)
435 struct hdmi *hdmi = dev_get_drvdata(dev);
437 unsigned int channel_allocation = 0;
439 unsigned int level_shift = 0; /* 0dB */
440 bool down_mix = false;
442 DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
443 params->sample_width, params->cea.channels);
445 switch (params->cea.channels) {
447 /* FR and FL speakers */
448 channel_allocation = 0;
449 chan = MSM_HDMI_AUDIO_CHANNEL_2;
452 /* FC, LFE, FR and FL speakers */
453 channel_allocation = 0x3;
454 chan = MSM_HDMI_AUDIO_CHANNEL_4;
457 /* RR, RL, FC, LFE, FR and FL speakers */
458 channel_allocation = 0x0B;
459 chan = MSM_HDMI_AUDIO_CHANNEL_6;
462 /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
463 channel_allocation = 0x1F;
464 chan = MSM_HDMI_AUDIO_CHANNEL_8;
470 switch (params->sample_rate) {
472 rate = HDMI_SAMPLE_RATE_32KHZ;
475 rate = HDMI_SAMPLE_RATE_44_1KHZ;
478 rate = HDMI_SAMPLE_RATE_48KHZ;
481 rate = HDMI_SAMPLE_RATE_88_2KHZ;
484 rate = HDMI_SAMPLE_RATE_96KHZ;
487 rate = HDMI_SAMPLE_RATE_176_4KHZ;
490 rate = HDMI_SAMPLE_RATE_192KHZ;
493 DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
494 params->sample_rate);
498 msm_hdmi_audio_set_sample_rate(hdmi, rate);
499 msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
500 level_shift, down_mix);
505 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
507 struct hdmi *hdmi = dev_get_drvdata(dev);
509 msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
512 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
513 .hw_params = msm_hdmi_audio_hw_params,
514 .audio_shutdown = msm_hdmi_audio_shutdown,
517 static struct hdmi_codec_pdata codec_data = {
518 .ops = &msm_hdmi_audio_codec_ops,
519 .max_i2s_channels = 8,
523 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
525 hdmi->audio_pdev = platform_device_register_data(dev,
530 return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
533 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
535 struct drm_device *drm = dev_get_drvdata(master);
536 struct msm_drm_private *priv = drm->dev_private;
537 struct hdmi_platform_config *hdmi_cfg;
539 struct device_node *of_node = dev->of_node;
542 hdmi_cfg = (struct hdmi_platform_config *)
543 of_device_get_match_data(dev);
545 DRM_DEV_ERROR(dev, "unknown hdmi_cfg: %pOFn\n", of_node);
549 hdmi_cfg->mmio_name = "core_physical";
550 hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
552 for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
553 const char *name = msm_hdmi_gpio_pdata[i].name;
554 struct gpio_desc *gpiod;
557 * We are fetching the GPIO lines "as is" since the connector
558 * code is enabling and disabling the lines. Until that point
559 * the power-on default value will be kept.
561 gpiod = devm_gpiod_get_optional(dev, name, GPIOD_ASIS);
562 /* This will catch e.g. -PROBE_DEFER */
564 return PTR_ERR(gpiod);
566 /* Try a second time, stripping down the name */
570 * Try again after stripping out the "qcom,hdmi-tx"
571 * prefix. This is mainly to match "hpd-gpios" used
572 * in the upstream bindings.
574 if (sscanf(name, "qcom,hdmi-tx-%s", name3))
575 gpiod = devm_gpiod_get_optional(dev, name3, GPIOD_ASIS);
577 return PTR_ERR(gpiod);
579 DBG("failed to get gpio: %s", name);
581 hdmi_cfg->gpios[i].gpiod = gpiod;
583 gpiod_set_consumer_name(gpiod, msm_hdmi_gpio_pdata[i].label);
584 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
585 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
588 dev->platform_data = hdmi_cfg;
590 hdmi = msm_hdmi_init(to_platform_device(dev));
592 return PTR_ERR(hdmi);
595 err = msm_hdmi_register_audio_driver(hdmi, dev);
597 DRM_ERROR("Failed to attach an audio codec %d\n", err);
598 hdmi->audio_pdev = NULL;
604 static void msm_hdmi_unbind(struct device *dev, struct device *master,
607 struct drm_device *drm = dev_get_drvdata(master);
608 struct msm_drm_private *priv = drm->dev_private;
610 if (priv->hdmi->audio_pdev)
611 platform_device_unregister(priv->hdmi->audio_pdev);
613 msm_hdmi_destroy(priv->hdmi);
618 static const struct component_ops msm_hdmi_ops = {
619 .bind = msm_hdmi_bind,
620 .unbind = msm_hdmi_unbind,
623 static int msm_hdmi_dev_probe(struct platform_device *pdev)
625 return component_add(&pdev->dev, &msm_hdmi_ops);
628 static int msm_hdmi_dev_remove(struct platform_device *pdev)
630 component_del(&pdev->dev, &msm_hdmi_ops);
634 static const struct of_device_id msm_hdmi_dt_match[] = {
635 { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
636 { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
637 { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
638 { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
639 { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
640 { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
644 static struct platform_driver msm_hdmi_driver = {
645 .probe = msm_hdmi_dev_probe,
646 .remove = msm_hdmi_dev_remove,
649 .of_match_table = msm_hdmi_dt_match,
653 void __init msm_hdmi_register(void)
655 msm_hdmi_phy_driver_register();
656 platform_driver_register(&msm_hdmi_driver);
659 void __exit msm_hdmi_unregister(void)
661 platform_driver_unregister(&msm_hdmi_driver);
662 msm_hdmi_phy_driver_unregister();