2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
20 void hdmi_set_mode(struct hdmi *hdmi, bool power_on)
25 ctrl |= HDMI_CTRL_ENABLE;
26 if (!hdmi->hdmi_mode) {
27 ctrl |= HDMI_CTRL_HDMI;
28 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
29 ctrl &= ~HDMI_CTRL_HDMI;
31 ctrl |= HDMI_CTRL_HDMI;
34 ctrl = HDMI_CTRL_HDMI;
37 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
38 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
39 power_on ? "Enable" : "Disable", ctrl);
42 irqreturn_t hdmi_irq(int irq, void *dev_id)
44 struct hdmi *hdmi = dev_id;
47 hdmi_connector_irq(hdmi->connector);
50 hdmi_i2c_irq(hdmi->i2c);
57 void hdmi_destroy(struct kref *kref)
59 struct hdmi *hdmi = container_of(kref, struct hdmi, refcount);
60 struct hdmi_phy *phy = hdmi->phy;
63 phy->funcs->destroy(phy);
66 hdmi_i2c_destroy(hdmi->i2c);
68 platform_set_drvdata(hdmi->pdev, NULL);
71 /* initialize connector */
72 struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
74 struct hdmi *hdmi = NULL;
75 struct msm_drm_private *priv = dev->dev_private;
76 struct platform_device *pdev = priv->hdmi_pdev;
77 struct hdmi_platform_config *config;
81 dev_err(dev->dev, "no hdmi device\n");
86 config = pdev->dev.platform_data;
88 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
94 kref_init(&hdmi->refcount);
98 hdmi->config = config;
99 hdmi->encoder = encoder;
101 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
103 /* not sure about which phy maps to which msm.. probably I miss some */
104 if (config->phy_init)
105 hdmi->phy = config->phy_init(hdmi);
107 hdmi->phy = ERR_PTR(-ENXIO);
109 if (IS_ERR(hdmi->phy)) {
110 ret = PTR_ERR(hdmi->phy);
111 dev_err(dev->dev, "failed to load phy: %d\n", ret);
116 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
117 if (IS_ERR(hdmi->mmio)) {
118 ret = PTR_ERR(hdmi->mmio);
122 BUG_ON(config->hpd_reg_cnt > ARRAY_SIZE(hdmi->hpd_regs));
123 for (i = 0; i < config->hpd_reg_cnt; i++) {
124 struct regulator *reg;
126 reg = devm_regulator_get(&pdev->dev, config->hpd_reg_names[i]);
129 dev_err(dev->dev, "failed to get hpd regulator: %s (%d)\n",
130 config->hpd_reg_names[i], ret);
134 hdmi->hpd_regs[i] = reg;
137 BUG_ON(config->pwr_reg_cnt > ARRAY_SIZE(hdmi->pwr_regs));
138 for (i = 0; i < config->pwr_reg_cnt; i++) {
139 struct regulator *reg;
141 reg = devm_regulator_get(&pdev->dev, config->pwr_reg_names[i]);
144 dev_err(dev->dev, "failed to get pwr regulator: %s (%d)\n",
145 config->pwr_reg_names[i], ret);
149 hdmi->pwr_regs[i] = reg;
152 BUG_ON(config->hpd_clk_cnt > ARRAY_SIZE(hdmi->hpd_clks));
153 for (i = 0; i < config->hpd_clk_cnt; i++) {
156 clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
159 dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n",
160 config->hpd_clk_names[i], ret);
164 hdmi->hpd_clks[i] = clk;
167 BUG_ON(config->pwr_clk_cnt > ARRAY_SIZE(hdmi->pwr_clks));
168 for (i = 0; i < config->pwr_clk_cnt; i++) {
171 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
174 dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n",
175 config->pwr_clk_names[i], ret);
179 hdmi->pwr_clks[i] = clk;
182 hdmi->i2c = hdmi_i2c_init(hdmi);
183 if (IS_ERR(hdmi->i2c)) {
184 ret = PTR_ERR(hdmi->i2c);
185 dev_err(dev->dev, "failed to get i2c: %d\n", ret);
190 hdmi->bridge = hdmi_bridge_init(hdmi);
191 if (IS_ERR(hdmi->bridge)) {
192 ret = PTR_ERR(hdmi->bridge);
193 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
198 hdmi->connector = hdmi_connector_init(hdmi);
199 if (IS_ERR(hdmi->connector)) {
200 ret = PTR_ERR(hdmi->connector);
201 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
202 hdmi->connector = NULL;
206 if (!config->shared_irq) {
207 hdmi->irq = platform_get_irq(pdev, 0);
210 dev_err(dev->dev, "failed to get irq: %d\n", ret);
214 ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq,
215 NULL, hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
218 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
224 encoder->bridge = hdmi->bridge;
226 priv->bridges[priv->num_bridges++] = hdmi->bridge;
227 priv->connectors[priv->num_connectors++] = hdmi->connector;
229 platform_set_drvdata(pdev, hdmi);
235 /* bridge/connector are normally destroyed by drm: */
237 hdmi->bridge->funcs->destroy(hdmi->bridge);
239 hdmi->connector->funcs->destroy(hdmi->connector);
240 hdmi_destroy(&hdmi->refcount);
250 #include <linux/of_gpio.h>
252 static void set_hdmi_pdev(struct drm_device *dev,
253 struct platform_device *pdev)
255 struct msm_drm_private *priv = dev->dev_private;
256 priv->hdmi_pdev = pdev;
259 static int hdmi_bind(struct device *dev, struct device *master, void *data)
261 static struct hdmi_platform_config config = {};
263 struct device_node *of_node = dev->of_node;
265 int get_gpio(const char *name)
267 int gpio = of_get_named_gpio(of_node, name, 0);
269 dev_err(dev, "failed to get gpio: %s (%d)\n",
276 /* TODO actually use DT.. */
277 static const char *hpd_reg_names[] = {"hpd-gdsc", "hpd-5v"};
278 static const char *pwr_reg_names[] = {"core-vdda", "core-vcc"};
279 static const char *hpd_clk_names[] = {"iface_clk", "core_clk", "mdp_core_clk"};
280 static const char *pwr_clk_names[] = {"extp_clk", "alt_iface_clk"};
282 config.phy_init = hdmi_phy_8x74_init;
283 config.mmio_name = "core_physical";
284 config.hpd_reg_names = hpd_reg_names;
285 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
286 config.pwr_reg_names = pwr_reg_names;
287 config.pwr_reg_cnt = ARRAY_SIZE(pwr_reg_names);
288 config.hpd_clk_names = hpd_clk_names;
289 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
290 config.pwr_clk_names = pwr_clk_names;
291 config.pwr_clk_cnt = ARRAY_SIZE(pwr_clk_names);
292 config.ddc_clk_gpio = get_gpio("qcom,hdmi-tx-ddc-clk");
293 config.ddc_data_gpio = get_gpio("qcom,hdmi-tx-ddc-data");
294 config.hpd_gpio = get_gpio("qcom,hdmi-tx-hpd");
295 config.mux_en_gpio = get_gpio("qcom,hdmi-tx-mux-en");
296 config.mux_sel_gpio = get_gpio("qcom,hdmi-tx-mux-sel");
297 config.shared_irq = true;
300 static const char *hpd_clk_names[] = {
301 "core_clk", "master_iface_clk", "slave_iface_clk",
303 if (cpu_is_apq8064()) {
304 static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
305 config.phy_init = hdmi_phy_8960_init;
306 config.mmio_name = "hdmi_msm_hdmi_addr";
307 config.hpd_reg_names = hpd_reg_names;
308 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
309 config.hpd_clk_names = hpd_clk_names;
310 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
311 config.ddc_clk_gpio = 70;
312 config.ddc_data_gpio = 71;
313 config.hpd_gpio = 72;
314 config.mux_en_gpio = -1;
315 config.mux_sel_gpio = -1;
316 } else if (cpu_is_msm8960() || cpu_is_msm8960ab()) {
317 static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
318 config.phy_init = hdmi_phy_8960_init;
319 config.mmio_name = "hdmi_msm_hdmi_addr";
320 config.hpd_reg_names = hpd_reg_names;
321 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
322 config.hpd_clk_names = hpd_clk_names;
323 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
324 config.ddc_clk_gpio = 100;
325 config.ddc_data_gpio = 101;
326 config.hpd_gpio = 102;
327 config.mux_en_gpio = -1;
328 config.mux_sel_gpio = -1;
329 } else if (cpu_is_msm8x60()) {
330 static const char *hpd_reg_names[] = {
331 "8901_hdmi_mvs", "8901_mpp0"
333 config.phy_init = hdmi_phy_8x60_init;
334 config.mmio_name = "hdmi_msm_hdmi_addr";
335 config.hpd_reg_names = hpd_reg_names;
336 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
337 config.hpd_clk_names = hpd_clk_names;
338 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
339 config.ddc_clk_gpio = 170;
340 config.ddc_data_gpio = 171;
341 config.hpd_gpio = 172;
342 config.mux_en_gpio = -1;
343 config.mux_sel_gpio = -1;
346 dev->platform_data = &config;
347 set_hdmi_pdev(dev_get_drvdata(master), to_platform_device(dev));
351 static void hdmi_unbind(struct device *dev, struct device *master,
354 set_hdmi_pdev(dev_get_drvdata(master), NULL);
357 static const struct component_ops hdmi_ops = {
359 .unbind = hdmi_unbind,
362 static int hdmi_dev_probe(struct platform_device *pdev)
364 return component_add(&pdev->dev, &hdmi_ops);
367 static int hdmi_dev_remove(struct platform_device *pdev)
369 component_del(&pdev->dev, &hdmi_ops);
373 static const struct of_device_id dt_match[] = {
374 { .compatible = "qcom,hdmi-tx" },
378 static struct platform_driver hdmi_driver = {
379 .probe = hdmi_dev_probe,
380 .remove = hdmi_dev_remove,
383 .of_match_table = dt_match,
387 void __init hdmi_register(void)
389 platform_driver_register(&hdmi_driver);
392 void __exit hdmi_unregister(void)
394 platform_driver_unregister(&hdmi_driver);