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 static struct platform_device *hdmi_pdev;
22 void hdmi_set_mode(struct hdmi *hdmi, bool power_on)
27 ctrl |= HDMI_CTRL_ENABLE;
28 if (!hdmi->hdmi_mode) {
29 ctrl |= HDMI_CTRL_HDMI;
30 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
31 ctrl &= ~HDMI_CTRL_HDMI;
33 ctrl |= HDMI_CTRL_HDMI;
36 ctrl = HDMI_CTRL_HDMI;
39 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
40 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
41 power_on ? "Enable" : "Disable", ctrl);
44 irqreturn_t hdmi_irq(int irq, void *dev_id)
46 struct hdmi *hdmi = dev_id;
49 hdmi_connector_irq(hdmi->connector);
52 hdmi_i2c_irq(hdmi->i2c);
59 void hdmi_destroy(struct kref *kref)
61 struct hdmi *hdmi = container_of(kref, struct hdmi, refcount);
62 struct hdmi_phy *phy = hdmi->phy;
65 phy->funcs->destroy(phy);
68 hdmi_i2c_destroy(hdmi->i2c);
70 put_device(&hdmi->pdev->dev);
73 /* initialize connector */
74 struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
76 struct hdmi *hdmi = NULL;
77 struct msm_drm_private *priv = dev->dev_private;
78 struct platform_device *pdev = hdmi_pdev;
79 struct hdmi_platform_config *config;
83 dev_err(dev->dev, "no hdmi device\n");
88 config = pdev->dev.platform_data;
90 hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
96 kref_init(&hdmi->refcount);
98 get_device(&pdev->dev);
102 hdmi->config = config;
103 hdmi->encoder = encoder;
105 /* not sure about which phy maps to which msm.. probably I miss some */
106 if (config->phy_init)
107 hdmi->phy = config->phy_init(hdmi);
109 hdmi->phy = ERR_PTR(-ENXIO);
111 if (IS_ERR(hdmi->phy)) {
112 ret = PTR_ERR(hdmi->phy);
113 dev_err(dev->dev, "failed to load phy: %d\n", ret);
118 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
119 if (IS_ERR(hdmi->mmio)) {
120 ret = PTR_ERR(hdmi->mmio);
124 BUG_ON(config->hpd_reg_cnt > ARRAY_SIZE(hdmi->hpd_regs));
125 for (i = 0; i < config->hpd_reg_cnt; i++) {
126 struct regulator *reg;
128 reg = devm_regulator_get(&pdev->dev, config->hpd_reg_names[i]);
131 dev_err(dev->dev, "failed to get hpd regulator: %s (%d)\n",
132 config->hpd_reg_names[i], ret);
136 hdmi->hpd_regs[i] = reg;
139 BUG_ON(config->pwr_reg_cnt > ARRAY_SIZE(hdmi->pwr_regs));
140 for (i = 0; i < config->pwr_reg_cnt; i++) {
141 struct regulator *reg;
143 reg = devm_regulator_get(&pdev->dev, config->pwr_reg_names[i]);
146 dev_err(dev->dev, "failed to get pwr regulator: %s (%d)\n",
147 config->pwr_reg_names[i], ret);
151 hdmi->pwr_regs[i] = reg;
154 BUG_ON(config->hpd_clk_cnt > ARRAY_SIZE(hdmi->hpd_clks));
155 for (i = 0; i < config->hpd_clk_cnt; i++) {
158 clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
161 dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n",
162 config->hpd_clk_names[i], ret);
166 hdmi->hpd_clks[i] = clk;
169 BUG_ON(config->pwr_clk_cnt > ARRAY_SIZE(hdmi->pwr_clks));
170 for (i = 0; i < config->pwr_clk_cnt; i++) {
173 clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
176 dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n",
177 config->pwr_clk_names[i], ret);
181 hdmi->pwr_clks[i] = clk;
184 hdmi->i2c = hdmi_i2c_init(hdmi);
185 if (IS_ERR(hdmi->i2c)) {
186 ret = PTR_ERR(hdmi->i2c);
187 dev_err(dev->dev, "failed to get i2c: %d\n", ret);
192 hdmi->bridge = hdmi_bridge_init(hdmi);
193 if (IS_ERR(hdmi->bridge)) {
194 ret = PTR_ERR(hdmi->bridge);
195 dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
200 hdmi->connector = hdmi_connector_init(hdmi);
201 if (IS_ERR(hdmi->connector)) {
202 ret = PTR_ERR(hdmi->connector);
203 dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
204 hdmi->connector = NULL;
208 if (!config->shared_irq) {
209 hdmi->irq = platform_get_irq(pdev, 0);
212 dev_err(dev->dev, "failed to get irq: %d\n", ret);
216 ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq,
217 NULL, hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
220 dev_err(dev->dev, "failed to request IRQ%u: %d\n",
226 encoder->bridge = hdmi->bridge;
228 priv->bridges[priv->num_bridges++] = hdmi->bridge;
229 priv->connectors[priv->num_connectors++] = hdmi->connector;
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 int hdmi_dev_probe(struct platform_device *pdev)
254 static struct hdmi_platform_config config = {};
256 struct device_node *of_node = pdev->dev.of_node;
258 int get_gpio(const char *name)
260 int gpio = of_get_named_gpio(of_node, name, 0);
262 dev_err(&pdev->dev, "failed to get gpio: %s (%d)\n",
269 /* TODO actually use DT.. */
270 static const char *hpd_reg_names[] = {"hpd-gdsc", "hpd-5v"};
271 static const char *pwr_reg_names[] = {"core-vdda", "core-vcc"};
272 static const char *hpd_clk_names[] = {"iface_clk", "core_clk", "mdp_core_clk"};
273 static const char *pwr_clk_names[] = {"extp_clk", "alt_iface_clk"};
275 config.phy_init = hdmi_phy_8x74_init;
276 config.mmio_name = "core_physical";
277 config.hpd_reg_names = hpd_reg_names;
278 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
279 config.pwr_reg_names = pwr_reg_names;
280 config.pwr_reg_cnt = ARRAY_SIZE(pwr_reg_names);
281 config.hpd_clk_names = hpd_clk_names;
282 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
283 config.pwr_clk_names = pwr_clk_names;
284 config.pwr_clk_cnt = ARRAY_SIZE(pwr_clk_names);
285 config.ddc_clk_gpio = get_gpio("qcom,hdmi-tx-ddc-clk");
286 config.ddc_data_gpio = get_gpio("qcom,hdmi-tx-ddc-data");
287 config.hpd_gpio = get_gpio("qcom,hdmi-tx-hpd");
288 config.mux_en_gpio = get_gpio("qcom,hdmi-tx-mux-en");
289 config.mux_sel_gpio = get_gpio("qcom,hdmi-tx-mux-sel");
290 config.shared_irq = true;
293 static const char *hpd_clk_names[] = {
294 "core_clk", "master_iface_clk", "slave_iface_clk",
296 if (cpu_is_apq8064()) {
297 static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
298 config.phy_init = hdmi_phy_8960_init;
299 config.mmio_name = "hdmi_msm_hdmi_addr";
300 config.hpd_reg_names = hpd_reg_names;
301 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
302 config.hpd_clk_names = hpd_clk_names;
303 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
304 config.ddc_clk_gpio = 70;
305 config.ddc_data_gpio = 71;
306 config.hpd_gpio = 72;
307 config.mux_en_gpio = -1;
308 config.mux_sel_gpio = 13 + NR_GPIO_IRQS;
309 } else if (cpu_is_msm8960() || cpu_is_msm8960ab()) {
310 static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
311 config.phy_init = hdmi_phy_8960_init;
312 config.mmio_name = "hdmi_msm_hdmi_addr";
313 config.hpd_reg_names = hpd_reg_names;
314 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
315 config.hpd_clk_names = hpd_clk_names;
316 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
317 config.ddc_clk_gpio = 100;
318 config.ddc_data_gpio = 101;
319 config.hpd_gpio = 102;
320 config.mux_en_gpio = -1;
321 config.mux_sel_gpio = -1;
322 } else if (cpu_is_msm8x60()) {
323 static const char *hpd_reg_names[] = {
324 "8901_hdmi_mvs", "8901_mpp0"
326 config.phy_init = hdmi_phy_8x60_init;
327 config.mmio_name = "hdmi_msm_hdmi_addr";
328 config.hpd_reg_names = hpd_reg_names;
329 config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names);
330 config.hpd_clk_names = hpd_clk_names;
331 config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names);
332 config.ddc_clk_gpio = 170;
333 config.ddc_data_gpio = 171;
334 config.hpd_gpio = 172;
335 config.mux_en_gpio = -1;
336 config.mux_sel_gpio = -1;
339 pdev->dev.platform_data = &config;
344 static int hdmi_dev_remove(struct platform_device *pdev)
350 static const struct of_device_id dt_match[] = {
351 { .compatible = "qcom,hdmi-tx" },
354 MODULE_DEVICE_TABLE(of, dt_match);
356 static struct platform_driver hdmi_driver = {
357 .probe = hdmi_dev_probe,
358 .remove = hdmi_dev_remove,
361 .of_match_table = dt_match,
365 void __init hdmi_register(void)
367 platform_driver_register(&hdmi_driver);
370 void __exit hdmi_unregister(void)
372 platform_driver_unregister(&hdmi_driver);