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c8afe684 RC |
1 | /* |
2 | * Copyright (C) 2013 Red Hat | |
3 | * Author: Rob Clark <robdclark@gmail.com> | |
4 | * | |
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. | |
8 | * | |
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 | |
12 | * more details. | |
13 | * | |
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/>. | |
16 | */ | |
17 | ||
18 | #include "hdmi.h" | |
19 | ||
c8afe684 RC |
20 | void hdmi_set_mode(struct hdmi *hdmi, bool power_on) |
21 | { | |
22 | uint32_t ctrl = 0; | |
23 | ||
24 | if (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; | |
30 | } else { | |
31 | ctrl |= HDMI_CTRL_HDMI; | |
32 | } | |
33 | } else { | |
34 | ctrl = HDMI_CTRL_HDMI; | |
35 | } | |
36 | ||
37 | hdmi_write(hdmi, REG_HDMI_CTRL, ctrl); | |
38 | DBG("HDMI Core: %s, HDMI_CTRL=0x%08x", | |
39 | power_on ? "Enable" : "Disable", ctrl); | |
40 | } | |
41 | ||
dada25bd | 42 | irqreturn_t hdmi_irq(int irq, void *dev_id) |
c8afe684 RC |
43 | { |
44 | struct hdmi *hdmi = dev_id; | |
45 | ||
46 | /* Process HPD: */ | |
47 | hdmi_connector_irq(hdmi->connector); | |
48 | ||
49 | /* Process DDC: */ | |
50 | hdmi_i2c_irq(hdmi->i2c); | |
51 | ||
52 | /* TODO audio.. */ | |
53 | ||
54 | return IRQ_HANDLED; | |
55 | } | |
56 | ||
a3376e3e | 57 | void hdmi_destroy(struct kref *kref) |
c8afe684 | 58 | { |
a3376e3e | 59 | struct hdmi *hdmi = container_of(kref, struct hdmi, refcount); |
c8afe684 RC |
60 | struct hdmi_phy *phy = hdmi->phy; |
61 | ||
62 | if (phy) | |
63 | phy->funcs->destroy(phy); | |
64 | ||
65 | if (hdmi->i2c) | |
66 | hdmi_i2c_destroy(hdmi->i2c); | |
67 | ||
c0c0d9ee | 68 | platform_set_drvdata(hdmi->pdev, NULL); |
c8afe684 RC |
69 | } |
70 | ||
71 | /* initialize connector */ | |
dada25bd | 72 | struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder) |
c8afe684 | 73 | { |
a3376e3e RC |
74 | struct hdmi *hdmi = NULL; |
75 | struct msm_drm_private *priv = dev->dev_private; | |
060530f1 | 76 | struct platform_device *pdev = priv->hdmi_pdev; |
c8afe684 | 77 | struct hdmi_platform_config *config; |
dada25bd | 78 | int i, ret; |
c8afe684 RC |
79 | |
80 | if (!pdev) { | |
81 | dev_err(dev->dev, "no hdmi device\n"); | |
82 | ret = -ENXIO; | |
83 | goto fail; | |
84 | } | |
85 | ||
86 | config = pdev->dev.platform_data; | |
87 | ||
a3376e3e RC |
88 | hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL); |
89 | if (!hdmi) { | |
90 | ret = -ENOMEM; | |
91 | goto fail; | |
92 | } | |
93 | ||
94 | kref_init(&hdmi->refcount); | |
95 | ||
c8afe684 RC |
96 | hdmi->dev = dev; |
97 | hdmi->pdev = pdev; | |
dada25bd | 98 | hdmi->config = config; |
a3376e3e | 99 | hdmi->encoder = encoder; |
c8afe684 | 100 | |
c0c0d9ee RC |
101 | hdmi_audio_infoframe_init(&hdmi->audio.infoframe); |
102 | ||
c8afe684 RC |
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); | |
106 | else | |
107 | hdmi->phy = ERR_PTR(-ENXIO); | |
108 | ||
109 | if (IS_ERR(hdmi->phy)) { | |
110 | ret = PTR_ERR(hdmi->phy); | |
111 | dev_err(dev->dev, "failed to load phy: %d\n", ret); | |
112 | hdmi->phy = NULL; | |
113 | goto fail; | |
114 | } | |
115 | ||
dada25bd | 116 | hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI"); |
c8afe684 RC |
117 | if (IS_ERR(hdmi->mmio)) { |
118 | ret = PTR_ERR(hdmi->mmio); | |
119 | goto fail; | |
120 | } | |
121 | ||
dada25bd RC |
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; | |
125 | ||
126 | reg = devm_regulator_get(&pdev->dev, config->hpd_reg_names[i]); | |
127 | if (IS_ERR(reg)) { | |
128 | ret = PTR_ERR(reg); | |
129 | dev_err(dev->dev, "failed to get hpd regulator: %s (%d)\n", | |
130 | config->hpd_reg_names[i], ret); | |
131 | goto fail; | |
132 | } | |
133 | ||
134 | hdmi->hpd_regs[i] = reg; | |
c8afe684 RC |
135 | } |
136 | ||
dada25bd RC |
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; | |
c8afe684 | 140 | |
dada25bd RC |
141 | reg = devm_regulator_get(&pdev->dev, config->pwr_reg_names[i]); |
142 | if (IS_ERR(reg)) { | |
143 | ret = PTR_ERR(reg); | |
144 | dev_err(dev->dev, "failed to get pwr regulator: %s (%d)\n", | |
145 | config->pwr_reg_names[i], ret); | |
146 | goto fail; | |
147 | } | |
148 | ||
149 | hdmi->pwr_regs[i] = reg; | |
c8afe684 RC |
150 | } |
151 | ||
dada25bd RC |
152 | BUG_ON(config->hpd_clk_cnt > ARRAY_SIZE(hdmi->hpd_clks)); |
153 | for (i = 0; i < config->hpd_clk_cnt; i++) { | |
154 | struct clk *clk; | |
155 | ||
156 | clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]); | |
157 | if (IS_ERR(clk)) { | |
158 | ret = PTR_ERR(clk); | |
159 | dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n", | |
160 | config->hpd_clk_names[i], ret); | |
161 | goto fail; | |
162 | } | |
163 | ||
164 | hdmi->hpd_clks[i] = clk; | |
c8afe684 RC |
165 | } |
166 | ||
dada25bd RC |
167 | BUG_ON(config->pwr_clk_cnt > ARRAY_SIZE(hdmi->pwr_clks)); |
168 | for (i = 0; i < config->pwr_clk_cnt; i++) { | |
169 | struct clk *clk; | |
170 | ||
171 | clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]); | |
172 | if (IS_ERR(clk)) { | |
173 | ret = PTR_ERR(clk); | |
174 | dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n", | |
175 | config->pwr_clk_names[i], ret); | |
176 | goto fail; | |
177 | } | |
178 | ||
179 | hdmi->pwr_clks[i] = clk; | |
c8afe684 RC |
180 | } |
181 | ||
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); | |
186 | hdmi->i2c = NULL; | |
187 | goto fail; | |
188 | } | |
189 | ||
a3376e3e RC |
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); | |
194 | hdmi->bridge = NULL; | |
195 | goto fail; | |
196 | } | |
197 | ||
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; | |
203 | goto fail; | |
204 | } | |
205 | ||
dada25bd RC |
206 | if (!config->shared_irq) { |
207 | hdmi->irq = platform_get_irq(pdev, 0); | |
208 | if (hdmi->irq < 0) { | |
209 | ret = hdmi->irq; | |
210 | dev_err(dev->dev, "failed to get irq: %d\n", ret); | |
211 | goto fail; | |
212 | } | |
c8afe684 | 213 | |
dada25bd RC |
214 | ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq, |
215 | NULL, hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, | |
216 | "hdmi_isr", hdmi); | |
217 | if (ret < 0) { | |
218 | dev_err(dev->dev, "failed to request IRQ%u: %d\n", | |
219 | hdmi->irq, ret); | |
220 | goto fail; | |
221 | } | |
c8afe684 RC |
222 | } |
223 | ||
a3376e3e RC |
224 | encoder->bridge = hdmi->bridge; |
225 | ||
226 | priv->bridges[priv->num_bridges++] = hdmi->bridge; | |
227 | priv->connectors[priv->num_connectors++] = hdmi->connector; | |
228 | ||
c0c0d9ee RC |
229 | platform_set_drvdata(pdev, hdmi); |
230 | ||
dada25bd | 231 | return hdmi; |
c8afe684 RC |
232 | |
233 | fail: | |
a3376e3e RC |
234 | if (hdmi) { |
235 | /* bridge/connector are normally destroyed by drm: */ | |
236 | if (hdmi->bridge) | |
237 | hdmi->bridge->funcs->destroy(hdmi->bridge); | |
238 | if (hdmi->connector) | |
239 | hdmi->connector->funcs->destroy(hdmi->connector); | |
240 | hdmi_destroy(&hdmi->refcount); | |
241 | } | |
c8afe684 | 242 | |
dada25bd | 243 | return ERR_PTR(ret); |
c8afe684 RC |
244 | } |
245 | ||
246 | /* | |
247 | * The hdmi device: | |
248 | */ | |
249 | ||
dada25bd RC |
250 | #include <linux/of_gpio.h> |
251 | ||
060530f1 RC |
252 | static void set_hdmi_pdev(struct drm_device *dev, |
253 | struct platform_device *pdev) | |
254 | { | |
255 | struct msm_drm_private *priv = dev->dev_private; | |
256 | priv->hdmi_pdev = pdev; | |
257 | } | |
258 | ||
259 | static int hdmi_bind(struct device *dev, struct device *master, void *data) | |
c8afe684 RC |
260 | { |
261 | static struct hdmi_platform_config config = {}; | |
262 | #ifdef CONFIG_OF | |
060530f1 | 263 | struct device_node *of_node = dev->of_node; |
dada25bd RC |
264 | |
265 | int get_gpio(const char *name) | |
266 | { | |
267 | int gpio = of_get_named_gpio(of_node, name, 0); | |
268 | if (gpio < 0) { | |
060530f1 | 269 | dev_err(dev, "failed to get gpio: %s (%d)\n", |
dada25bd RC |
270 | name, gpio); |
271 | gpio = -1; | |
272 | } | |
273 | return gpio; | |
274 | } | |
275 | ||
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"}; | |
b77f47e7 | 280 | static unsigned long hpd_clk_freq[] = {0, 19200000, 0}; |
dada25bd RC |
281 | static const char *pwr_clk_names[] = {"extp_clk", "alt_iface_clk"}; |
282 | ||
283 | config.phy_init = hdmi_phy_8x74_init; | |
284 | config.mmio_name = "core_physical"; | |
285 | config.hpd_reg_names = hpd_reg_names; | |
286 | config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); | |
287 | config.pwr_reg_names = pwr_reg_names; | |
288 | config.pwr_reg_cnt = ARRAY_SIZE(pwr_reg_names); | |
289 | config.hpd_clk_names = hpd_clk_names; | |
b77f47e7 | 290 | config.hpd_freq = hpd_clk_freq; |
dada25bd RC |
291 | config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); |
292 | config.pwr_clk_names = pwr_clk_names; | |
293 | config.pwr_clk_cnt = ARRAY_SIZE(pwr_clk_names); | |
294 | config.ddc_clk_gpio = get_gpio("qcom,hdmi-tx-ddc-clk"); | |
295 | config.ddc_data_gpio = get_gpio("qcom,hdmi-tx-ddc-data"); | |
296 | config.hpd_gpio = get_gpio("qcom,hdmi-tx-hpd"); | |
297 | config.mux_en_gpio = get_gpio("qcom,hdmi-tx-mux-en"); | |
298 | config.mux_sel_gpio = get_gpio("qcom,hdmi-tx-mux-sel"); | |
299 | config.shared_irq = true; | |
300 | ||
c8afe684 | 301 | #else |
dada25bd RC |
302 | static const char *hpd_clk_names[] = { |
303 | "core_clk", "master_iface_clk", "slave_iface_clk", | |
304 | }; | |
c8afe684 | 305 | if (cpu_is_apq8064()) { |
dada25bd | 306 | static const char *hpd_reg_names[] = {"8921_hdmi_mvs"}; |
c8afe684 | 307 | config.phy_init = hdmi_phy_8960_init; |
dada25bd RC |
308 | config.mmio_name = "hdmi_msm_hdmi_addr"; |
309 | config.hpd_reg_names = hpd_reg_names; | |
310 | config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); | |
311 | config.hpd_clk_names = hpd_clk_names; | |
312 | config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); | |
c8afe684 RC |
313 | config.ddc_clk_gpio = 70; |
314 | config.ddc_data_gpio = 71; | |
315 | config.hpd_gpio = 72; | |
dada25bd | 316 | config.mux_en_gpio = -1; |
c0c0d9ee | 317 | config.mux_sel_gpio = -1; |
e529c7e6 | 318 | } else if (cpu_is_msm8960() || cpu_is_msm8960ab()) { |
dada25bd | 319 | static const char *hpd_reg_names[] = {"8921_hdmi_mvs"}; |
c8afe684 | 320 | config.phy_init = hdmi_phy_8960_init; |
dada25bd RC |
321 | config.mmio_name = "hdmi_msm_hdmi_addr"; |
322 | config.hpd_reg_names = hpd_reg_names; | |
323 | config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); | |
324 | config.hpd_clk_names = hpd_clk_names; | |
325 | config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); | |
c8afe684 RC |
326 | config.ddc_clk_gpio = 100; |
327 | config.ddc_data_gpio = 101; | |
328 | config.hpd_gpio = 102; | |
dada25bd RC |
329 | config.mux_en_gpio = -1; |
330 | config.mux_sel_gpio = -1; | |
c8afe684 | 331 | } else if (cpu_is_msm8x60()) { |
dada25bd RC |
332 | static const char *hpd_reg_names[] = { |
333 | "8901_hdmi_mvs", "8901_mpp0" | |
334 | }; | |
c8afe684 | 335 | config.phy_init = hdmi_phy_8x60_init; |
dada25bd RC |
336 | config.mmio_name = "hdmi_msm_hdmi_addr"; |
337 | config.hpd_reg_names = hpd_reg_names; | |
338 | config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); | |
339 | config.hpd_clk_names = hpd_clk_names; | |
340 | config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); | |
c8afe684 RC |
341 | config.ddc_clk_gpio = 170; |
342 | config.ddc_data_gpio = 171; | |
343 | config.hpd_gpio = 172; | |
dada25bd RC |
344 | config.mux_en_gpio = -1; |
345 | config.mux_sel_gpio = -1; | |
c8afe684 RC |
346 | } |
347 | #endif | |
060530f1 RC |
348 | dev->platform_data = &config; |
349 | set_hdmi_pdev(dev_get_drvdata(master), to_platform_device(dev)); | |
c8afe684 RC |
350 | return 0; |
351 | } | |
352 | ||
060530f1 RC |
353 | static void hdmi_unbind(struct device *dev, struct device *master, |
354 | void *data) | |
355 | { | |
356 | set_hdmi_pdev(dev_get_drvdata(master), NULL); | |
357 | } | |
358 | ||
359 | static const struct component_ops hdmi_ops = { | |
360 | .bind = hdmi_bind, | |
361 | .unbind = hdmi_unbind, | |
362 | }; | |
363 | ||
364 | static int hdmi_dev_probe(struct platform_device *pdev) | |
365 | { | |
366 | return component_add(&pdev->dev, &hdmi_ops); | |
367 | } | |
368 | ||
c8afe684 RC |
369 | static int hdmi_dev_remove(struct platform_device *pdev) |
370 | { | |
060530f1 | 371 | component_del(&pdev->dev, &hdmi_ops); |
c8afe684 RC |
372 | return 0; |
373 | } | |
374 | ||
dada25bd RC |
375 | static const struct of_device_id dt_match[] = { |
376 | { .compatible = "qcom,hdmi-tx" }, | |
377 | {} | |
378 | }; | |
dada25bd | 379 | |
c8afe684 RC |
380 | static struct platform_driver hdmi_driver = { |
381 | .probe = hdmi_dev_probe, | |
382 | .remove = hdmi_dev_remove, | |
dada25bd RC |
383 | .driver = { |
384 | .name = "hdmi_msm", | |
385 | .of_match_table = dt_match, | |
386 | }, | |
c8afe684 RC |
387 | }; |
388 | ||
389 | void __init hdmi_register(void) | |
390 | { | |
391 | platform_driver_register(&hdmi_driver); | |
392 | } | |
393 | ||
394 | void __exit hdmi_unregister(void) | |
395 | { | |
396 | platform_driver_unregister(&hdmi_driver); | |
397 | } |