2 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
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.
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
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/>.
19 #include <linux/of_irq.h>
22 void hdmi_set_mode(struct hdmi *hdmi, bool power_on)
27 spin_lock_irqsave(&hdmi->reg_lock, flags);
29 ctrl |= HDMI_CTRL_ENABLE;
30 if (!hdmi->hdmi_mode) {
31 ctrl |= HDMI_CTRL_HDMI;
32 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
33 ctrl &= ~HDMI_CTRL_HDMI;
35 ctrl |= HDMI_CTRL_HDMI;
38 ctrl = HDMI_CTRL_HDMI;
41 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
42 spin_unlock_irqrestore(&hdmi->reg_lock, flags);
43 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
44 power_on ? "Enable" : "Disable", ctrl);
47 static irqreturn_t hdmi_irq(int irq, void *dev_id)
49 struct hdmi *hdmi = dev_id;
52 hdmi_connector_irq(hdmi->connector);
55 hdmi_i2c_irq(hdmi->i2c);
59 hdmi_hdcp_irq(hdmi->hdcp_ctrl);
66 static void hdmi_destroy(struct hdmi *hdmi)
68 struct hdmi_phy *phy = hdmi->phy;
71 * at this point, hpd has been disabled,
72 * after flush workq, it's safe to deinit hdcp
75 flush_workqueue(hdmi->workq);
76 destroy_workqueue(hdmi->workq);
78 hdmi_hdcp_destroy(hdmi);
80 phy->funcs->destroy(phy);
83 hdmi_i2c_destroy(hdmi->i2c);
85 platform_set_drvdata(hdmi->pdev, NULL);
88 /* construct hdmi at bind/probe time, grab all the resources. If
89 * we are to EPROBE_DEFER we want to do it here, rather than later
90 * at modeset_init() time
92 static struct hdmi *hdmi_init(struct platform_device *pdev)
94 struct hdmi_platform_config *config = pdev->dev.platform_data;
95 struct hdmi *hdmi = NULL;
99 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
106 hdmi->config = config;
107 spin_lock_init(&hdmi->reg_lock);
109 /* not sure about which phy maps to which msm.. probably I miss some */
110 if (config->phy_init) {
111 hdmi->phy = config->phy_init(hdmi);
113 if (IS_ERR(hdmi->phy)) {
114 ret = PTR_ERR(hdmi->phy);
115 dev_err(&pdev->dev, "failed to load phy: %d\n", ret);
121 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
122 if (IS_ERR(hdmi->mmio)) {
123 ret = PTR_ERR(hdmi->mmio);
127 /* HDCP needs physical address of hdmi register */
128 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
130 hdmi->mmio_phy_addr = res->start;
132 hdmi->qfprom_mmio = msm_ioremap(pdev,
133 config->qfprom_mmio_name, "HDMI_QFPROM");
134 if (IS_ERR(hdmi->qfprom_mmio)) {
135 dev_info(&pdev->dev, "can't find qfprom resource\n");
136 hdmi->qfprom_mmio = NULL;
139 hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
140 config->hpd_reg_cnt, GFP_KERNEL);
141 if (!hdmi->hpd_regs) {
145 for (i = 0; i < config->hpd_reg_cnt; i++) {
146 struct regulator *reg;
148 reg = devm_regulator_get(&pdev->dev,
149 config->hpd_reg_names[i]);
152 dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
153 config->hpd_reg_names[i], ret);
157 hdmi->hpd_regs[i] = reg;
160 hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
161 config->pwr_reg_cnt, GFP_KERNEL);
162 if (!hdmi->pwr_regs) {
166 for (i = 0; i < config->pwr_reg_cnt; i++) {
167 struct regulator *reg;
169 reg = devm_regulator_get(&pdev->dev,
170 config->pwr_reg_names[i]);
173 dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
174 config->pwr_reg_names[i], ret);
178 hdmi->pwr_regs[i] = reg;
181 hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
182 config->hpd_clk_cnt, GFP_KERNEL);
183 if (!hdmi->hpd_clks) {
187 for (i = 0; i < config->hpd_clk_cnt; i++) {
190 clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
193 dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
194 config->hpd_clk_names[i], ret);
198 hdmi->hpd_clks[i] = clk;
201 hdmi->pwr_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
202 config->pwr_clk_cnt, GFP_KERNEL);
203 if (!hdmi->pwr_clks) {
207 for (i = 0; i < config->pwr_clk_cnt; i++) {
210 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
213 dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
214 config->pwr_clk_names[i], ret);
218 hdmi->pwr_clks[i] = clk;
221 hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
223 hdmi->i2c = hdmi_i2c_init(hdmi);
224 if (IS_ERR(hdmi->i2c)) {
225 ret = PTR_ERR(hdmi->i2c);
226 dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
231 hdmi->hdcp_ctrl = hdmi_hdcp_init(hdmi);
232 if (IS_ERR(hdmi->hdcp_ctrl)) {
233 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
234 hdmi->hdcp_ctrl = NULL;
246 /* Second part of initialization, the drm/kms level modeset_init,
247 * constructs/initializes mode objects, etc, is called from master
248 * driver (not hdmi sub-device's probe/bind!)
250 * Any resource (regulator/clk/etc) which could be missing at boot
251 * should be handled in hdmi_init() so that failure happens from
252 * hdmi sub-device's probe.
254 int hdmi_modeset_init(struct hdmi *hdmi,
255 struct drm_device *dev, struct drm_encoder *encoder)
257 struct msm_drm_private *priv = dev->dev_private;
258 struct platform_device *pdev = hdmi->pdev;
262 hdmi->encoder = encoder;
264 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
266 hdmi->bridge = hdmi_bridge_init(hdmi);
267 if (IS_ERR(hdmi->bridge)) {
268 ret = PTR_ERR(hdmi->bridge);
269 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
274 hdmi->connector = hdmi_connector_init(hdmi);
275 if (IS_ERR(hdmi->connector)) {
276 ret = PTR_ERR(hdmi->connector);
277 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
278 hdmi->connector = NULL;
282 hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
285 dev_err(dev->dev, "failed to get irq: %d\n", ret);
289 ret = devm_request_irq(&pdev->dev, hdmi->irq,
290 hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
293 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
298 encoder->bridge = hdmi->bridge;
300 priv->bridges[priv->num_bridges++] = hdmi->bridge;
301 priv->connectors[priv->num_connectors++] = hdmi->connector;
303 platform_set_drvdata(pdev, hdmi);
308 /* bridge is normally destroyed by drm: */
310 hdmi_bridge_destroy(hdmi->bridge);
313 if (hdmi->connector) {
314 hdmi->connector->funcs->destroy(hdmi->connector);
315 hdmi->connector = NULL;
325 #include <linux/of_gpio.h>
327 #define HDMI_CFG(item, entry) \
328 .item ## _names = item ##_names_ ## entry, \
329 .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
331 static struct hdmi_platform_config hdmi_tx_8660_config = {
332 .phy_init = hdmi_phy_8x60_init,
335 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
336 static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
338 static struct hdmi_platform_config hdmi_tx_8960_config = {
339 .phy_init = hdmi_phy_8960_init,
340 HDMI_CFG(hpd_reg, 8960),
341 HDMI_CFG(hpd_clk, 8960),
344 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
345 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
346 static const char *pwr_clk_names_8x74[] = {"extp_clk", "alt_iface_clk"};
347 static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
348 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
350 static struct hdmi_platform_config hdmi_tx_8974_config = {
351 .phy_init = hdmi_phy_8x74_init,
352 HDMI_CFG(pwr_reg, 8x74),
353 HDMI_CFG(hpd_reg, 8x74),
354 HDMI_CFG(pwr_clk, 8x74),
355 HDMI_CFG(hpd_clk, 8x74),
356 .hpd_freq = hpd_clk_freq_8x74,
359 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
361 static struct hdmi_platform_config hdmi_tx_8084_config = {
362 .phy_init = hdmi_phy_8x74_init,
363 HDMI_CFG(pwr_reg, 8x74),
364 HDMI_CFG(hpd_reg, 8084),
365 HDMI_CFG(pwr_clk, 8x74),
366 HDMI_CFG(hpd_clk, 8x74),
367 .hpd_freq = hpd_clk_freq_8x74,
370 static const char *hpd_reg_names_8x94[] = {};
372 static struct hdmi_platform_config hdmi_tx_8994_config = {
373 .phy_init = NULL, /* nothing to do for this HDMI PHY 20nm */
374 HDMI_CFG(pwr_reg, 8x74),
375 HDMI_CFG(hpd_reg, 8x94),
376 HDMI_CFG(pwr_clk, 8x74),
377 HDMI_CFG(hpd_clk, 8x74),
378 .hpd_freq = hpd_clk_freq_8x74,
381 static const struct of_device_id dt_match[] = {
382 { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
383 { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
384 { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
385 { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
386 { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
391 static int get_gpio(struct device *dev, struct device_node *of_node, const char *name)
393 int gpio = of_get_named_gpio(of_node, name, 0);
396 snprintf(name2, sizeof(name2), "%s-gpio", name);
397 gpio = of_get_named_gpio(of_node, name2, 0);
399 DBG("failed to get gpio: %s (%d)", name, gpio);
407 static int hdmi_bind(struct device *dev, struct device *master, void *data)
409 struct drm_device *drm = dev_get_drvdata(master);
410 struct msm_drm_private *priv = drm->dev_private;
411 static struct hdmi_platform_config *hdmi_cfg;
414 struct device_node *of_node = dev->of_node;
415 const struct of_device_id *match;
417 match = of_match_node(dt_match, of_node);
418 if (match && match->data) {
419 hdmi_cfg = (struct hdmi_platform_config *)match->data;
420 DBG("hdmi phy: %s", match->compatible);
422 dev_err(dev, "unknown phy: %s\n", of_node->name);
426 hdmi_cfg->mmio_name = "core_physical";
427 hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
428 hdmi_cfg->ddc_clk_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-clk");
429 hdmi_cfg->ddc_data_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-data");
430 hdmi_cfg->hpd_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-hpd");
431 hdmi_cfg->mux_en_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-en");
432 hdmi_cfg->mux_sel_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-sel");
433 hdmi_cfg->mux_lpm_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-lpm");
436 static struct hdmi_platform_config config = {};
437 static const char *hpd_clk_names[] = {
438 "core_clk", "master_iface_clk", "slave_iface_clk",
440 if (cpu_is_apq8064()) {
441 static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
442 config.phy_init = hdmi_phy_8960_init;
443 config.hpd_reg_names = hpd_reg_names;
444 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
445 config.hpd_clk_names = hpd_clk_names;
446 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
447 config.ddc_clk_gpio = 70;
448 config.ddc_data_gpio = 71;
449 config.hpd_gpio = 72;
450 config.mux_en_gpio = -1;
451 config.mux_sel_gpio = -1;
452 } else if (cpu_is_msm8960() || cpu_is_msm8960ab()) {
453 static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
454 config.phy_init = hdmi_phy_8960_init;
455 config.hpd_reg_names = hpd_reg_names;
456 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
457 config.hpd_clk_names = hpd_clk_names;
458 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
459 config.ddc_clk_gpio = 100;
460 config.ddc_data_gpio = 101;
461 config.hpd_gpio = 102;
462 config.mux_en_gpio = -1;
463 config.mux_sel_gpio = -1;
464 } else if (cpu_is_msm8x60()) {
465 static const char *hpd_reg_names[] = {
466 "8901_hdmi_mvs", "8901_mpp0"
468 config.phy_init = hdmi_phy_8x60_init;
469 config.hpd_reg_names = hpd_reg_names;
470 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
471 config.hpd_clk_names = hpd_clk_names;
472 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
473 config.ddc_clk_gpio = 170;
474 config.ddc_data_gpio = 171;
475 config.hpd_gpio = 172;
476 config.mux_en_gpio = -1;
477 config.mux_sel_gpio = -1;
479 config.mmio_name = "hdmi_msm_hdmi_addr";
480 config.qfprom_mmio_name = "hdmi_msm_qfprom_addr";
484 dev->platform_data = hdmi_cfg;
486 hdmi = hdmi_init(to_platform_device(dev));
488 return PTR_ERR(hdmi);
494 static void hdmi_unbind(struct device *dev, struct device *master,
497 struct drm_device *drm = dev_get_drvdata(master);
498 struct msm_drm_private *priv = drm->dev_private;
500 hdmi_destroy(priv->hdmi);
505 static const struct component_ops hdmi_ops = {
507 .unbind = hdmi_unbind,
510 static int hdmi_dev_probe(struct platform_device *pdev)
512 return component_add(&pdev->dev, &hdmi_ops);
515 static int hdmi_dev_remove(struct platform_device *pdev)
517 component_del(&pdev->dev, &hdmi_ops);
521 static struct platform_driver hdmi_driver = {
522 .probe = hdmi_dev_probe,
523 .remove = hdmi_dev_remove,
526 .of_match_table = dt_match,
530 void __init hdmi_register(void)
532 platform_driver_register(&hdmi_driver);
535 void __exit hdmi_unregister(void)
537 platform_driver_unregister(&hdmi_driver);