2 * HDMI driver for OMAP5
4 * Copyright (C) 2014 Texas Instruments Incorporated
9 * Archit Taneja <archit@ti.com>
10 * Tomi Valkeinen <tomi.valkeinen@ti.com>
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License version 2 as published by
14 * the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
21 * You should have received a copy of the GNU General Public License along with
22 * this program. If not, see <http://www.gnu.org/licenses/>.
25 #define DSS_SUBSYS_NAME "HDMI"
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/err.h>
31 #include <linux/interrupt.h>
32 #include <linux/mutex.h>
33 #include <linux/delay.h>
34 #include <linux/string.h>
35 #include <linux/platform_device.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/clk.h>
38 #include <linux/gpio.h>
39 #include <linux/regulator/consumer.h>
40 #include <linux/component.h>
41 #include <video/omapfb_dss.h>
42 #include <sound/omap-hdmi-audio.h>
44 #include "hdmi5_core.h"
46 #include "dss_features.h"
48 static struct omap_hdmi hdmi;
50 static int hdmi_runtime_get(void)
54 DSSDBG("hdmi_runtime_get\n");
56 r = pm_runtime_get_sync(&hdmi.pdev->dev);
58 pm_runtime_put_sync(&hdmi.pdev->dev);
65 static void hdmi_runtime_put(void)
69 DSSDBG("hdmi_runtime_put\n");
71 r = pm_runtime_put_sync(&hdmi.pdev->dev);
72 WARN_ON(r < 0 && r != -ENOSYS);
75 static irqreturn_t hdmi_irq_handler(int irq, void *data)
77 struct hdmi_wp_data *wp = data;
80 irqstatus = hdmi_wp_get_irqstatus(wp);
81 hdmi_wp_set_irqstatus(wp, irqstatus);
83 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
84 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
87 * If we get both connect and disconnect interrupts at the same
88 * time, turn off the PHY, clear interrupts, and restart, which
89 * raises connect interrupt if a cable is connected, or nothing
90 * if cable is not connected.
93 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
96 * We always get bogus CONNECT & DISCONNECT interrupts when
97 * setting the PHY to LDOON. To ignore those, we force the RXDET
98 * line to 0 until the PHY power state has been changed.
100 v = hdmi_read_reg(hdmi.phy.base, HDMI_TXPHY_PAD_CFG_CTRL);
101 v = FLD_MOD(v, 1, 15, 15); /* FORCE_RXDET_HIGH */
102 v = FLD_MOD(v, 0, 14, 7); /* RXDET_LINE */
103 hdmi_write_reg(hdmi.phy.base, HDMI_TXPHY_PAD_CFG_CTRL, v);
105 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
106 HDMI_IRQ_LINK_DISCONNECT);
108 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
110 REG_FLD_MOD(hdmi.phy.base, HDMI_TXPHY_PAD_CFG_CTRL, 0, 15, 15);
112 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
113 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
114 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
115 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
121 static int hdmi_init_regulator(void)
123 struct regulator *reg;
125 if (hdmi.vdda_reg != NULL)
128 reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
130 DSSERR("can't get VDDA regulator\n");
139 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
143 r = regulator_enable(hdmi.vdda_reg);
147 r = hdmi_runtime_get();
149 goto err_runtime_get;
151 /* Make selection of HDMI in DSS */
152 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
154 hdmi.core_enabled = true;
159 regulator_disable(hdmi.vdda_reg);
164 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
166 hdmi.core_enabled = false;
169 regulator_disable(hdmi.vdda_reg);
172 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
175 struct omap_video_timings *p;
176 struct omap_overlay_manager *mgr = hdmi.output.manager;
177 struct dss_pll_clock_info hdmi_cinfo = { 0 };
179 r = hdmi_power_on_core(dssdev);
183 p = &hdmi.cfg.timings;
185 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
187 hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
189 /* disable and clear irqs */
190 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
191 hdmi_wp_set_irqstatus(&hdmi.wp,
192 hdmi_wp_get_irqstatus(&hdmi.wp));
194 r = dss_pll_enable(&hdmi.pll.pll);
196 DSSERR("Failed to enable PLL\n");
200 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
202 DSSERR("Failed to configure PLL\n");
206 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
207 hdmi_cinfo.clkout[0]);
209 DSSDBG("Failed to start PHY\n");
213 r = hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_LDOON);
217 hdmi5_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
219 /* bypass TV gamma table */
220 dispc_enable_gamma_table(0);
223 dss_mgr_set_timings(mgr, p);
225 r = hdmi_wp_video_start(&hdmi.wp);
229 r = dss_mgr_enable(mgr);
233 hdmi_wp_set_irqenable(&hdmi.wp,
234 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
239 hdmi_wp_video_stop(&hdmi.wp);
241 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
245 dss_pll_disable(&hdmi.pll.pll);
247 hdmi_power_off_core(dssdev);
251 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
253 struct omap_overlay_manager *mgr = hdmi.output.manager;
255 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
257 dss_mgr_disable(mgr);
259 hdmi_wp_video_stop(&hdmi.wp);
261 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
263 dss_pll_disable(&hdmi.pll.pll);
265 hdmi_power_off_core(dssdev);
268 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
269 struct omap_video_timings *timings)
271 struct omap_dss_device *out = &hdmi.output;
273 /* TODO: proper interlace support */
274 if (timings->interlace)
277 if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
283 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
284 struct omap_video_timings *timings)
286 mutex_lock(&hdmi.lock);
288 hdmi.cfg.timings = *timings;
290 dispc_set_tv_pclk(timings->pixelclock);
292 mutex_unlock(&hdmi.lock);
295 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
296 struct omap_video_timings *timings)
298 *timings = hdmi.cfg.timings;
301 static void hdmi_dump_regs(struct seq_file *s)
303 mutex_lock(&hdmi.lock);
305 if (hdmi_runtime_get()) {
306 mutex_unlock(&hdmi.lock);
310 hdmi_wp_dump(&hdmi.wp, s);
311 hdmi_pll_dump(&hdmi.pll, s);
312 hdmi_phy_dump(&hdmi.phy, s);
313 hdmi5_core_dump(&hdmi.core, s);
316 mutex_unlock(&hdmi.lock);
319 static int read_edid(u8 *buf, int len)
324 mutex_lock(&hdmi.lock);
326 r = hdmi_runtime_get();
329 idlemode = REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
331 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
333 r = hdmi5_read_edid(&hdmi.core, buf, len);
335 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
338 mutex_unlock(&hdmi.lock);
343 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
345 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
346 hdmi_wp_audio_enable(&hd->wp, true);
347 hdmi_wp_audio_core_req_enable(&hd->wp, true);
350 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
352 hdmi_wp_audio_core_req_enable(&hd->wp, false);
353 hdmi_wp_audio_enable(&hd->wp, false);
354 REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2);
357 static int hdmi_display_enable(struct omap_dss_device *dssdev)
359 struct omap_dss_device *out = &hdmi.output;
363 DSSDBG("ENTER hdmi_display_enable\n");
365 mutex_lock(&hdmi.lock);
367 if (out->manager == NULL) {
368 DSSERR("failed to enable display: no output/manager\n");
373 r = hdmi_power_on_full(dssdev);
375 DSSERR("failed to power on device\n");
379 if (hdmi.audio_configured) {
380 r = hdmi5_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
381 hdmi.cfg.timings.pixelclock);
383 DSSERR("Error restoring audio configuration: %d", r);
384 hdmi.audio_abort_cb(&hdmi.pdev->dev);
385 hdmi.audio_configured = false;
389 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
390 if (hdmi.audio_configured && hdmi.audio_playing)
391 hdmi_start_audio_stream(&hdmi);
392 hdmi.display_enabled = true;
393 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
395 mutex_unlock(&hdmi.lock);
399 mutex_unlock(&hdmi.lock);
403 static void hdmi_display_disable(struct omap_dss_device *dssdev)
407 DSSDBG("Enter hdmi_display_disable\n");
409 mutex_lock(&hdmi.lock);
411 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
412 hdmi_stop_audio_stream(&hdmi);
413 hdmi.display_enabled = false;
414 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
416 hdmi_power_off_full(dssdev);
418 mutex_unlock(&hdmi.lock);
421 static int hdmi_core_enable(struct omap_dss_device *dssdev)
425 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
427 mutex_lock(&hdmi.lock);
429 r = hdmi_power_on_core(dssdev);
431 DSSERR("failed to power on device\n");
435 mutex_unlock(&hdmi.lock);
439 mutex_unlock(&hdmi.lock);
443 static void hdmi_core_disable(struct omap_dss_device *dssdev)
445 DSSDBG("Enter omapdss_hdmi_core_disable\n");
447 mutex_lock(&hdmi.lock);
449 hdmi_power_off_core(dssdev);
451 mutex_unlock(&hdmi.lock);
454 static int hdmi_connect(struct omap_dss_device *dssdev,
455 struct omap_dss_device *dst)
457 struct omap_overlay_manager *mgr;
460 r = hdmi_init_regulator();
464 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
468 r = dss_mgr_connect(mgr, dssdev);
472 r = omapdss_output_set_device(dssdev, dst);
474 DSSERR("failed to connect output to new device: %s\n",
476 dss_mgr_disconnect(mgr, dssdev);
483 static void hdmi_disconnect(struct omap_dss_device *dssdev,
484 struct omap_dss_device *dst)
486 WARN_ON(dst != dssdev->dst);
488 if (dst != dssdev->dst)
491 omapdss_output_unset_device(dssdev);
494 dss_mgr_disconnect(dssdev->manager, dssdev);
497 static int hdmi_read_edid(struct omap_dss_device *dssdev,
503 need_enable = hdmi.core_enabled == false;
506 r = hdmi_core_enable(dssdev);
511 r = read_edid(edid, len);
514 hdmi_core_disable(dssdev);
519 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
520 const struct hdmi_avi_infoframe *avi)
522 hdmi.cfg.infoframe = *avi;
526 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
529 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
533 static const struct omapdss_hdmi_ops hdmi_ops = {
534 .connect = hdmi_connect,
535 .disconnect = hdmi_disconnect,
537 .enable = hdmi_display_enable,
538 .disable = hdmi_display_disable,
540 .check_timings = hdmi_display_check_timing,
541 .set_timings = hdmi_display_set_timing,
542 .get_timings = hdmi_display_get_timings,
544 .read_edid = hdmi_read_edid,
545 .set_infoframe = hdmi_set_infoframe,
546 .set_hdmi_mode = hdmi_set_hdmi_mode,
549 static void hdmi_init_output(struct platform_device *pdev)
551 struct omap_dss_device *out = &hdmi.output;
553 out->dev = &pdev->dev;
554 out->id = OMAP_DSS_OUTPUT_HDMI;
555 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
556 out->name = "hdmi.0";
557 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
558 out->ops.hdmi = &hdmi_ops;
559 out->owner = THIS_MODULE;
561 omapdss_register_output(out);
564 static void hdmi_uninit_output(struct platform_device *pdev)
566 struct omap_dss_device *out = &hdmi.output;
568 omapdss_unregister_output(out);
571 static int hdmi_probe_of(struct platform_device *pdev)
573 struct device_node *node = pdev->dev.of_node;
574 struct device_node *ep;
577 ep = omapdss_of_get_first_endpoint(node);
581 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
593 /* Audio callbacks */
594 static int hdmi_audio_startup(struct device *dev,
595 void (*abort_cb)(struct device *dev))
597 struct omap_hdmi *hd = dev_get_drvdata(dev);
600 mutex_lock(&hd->lock);
602 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
607 hd->audio_abort_cb = abort_cb;
610 mutex_unlock(&hd->lock);
615 static int hdmi_audio_shutdown(struct device *dev)
617 struct omap_hdmi *hd = dev_get_drvdata(dev);
619 mutex_lock(&hd->lock);
620 hd->audio_abort_cb = NULL;
621 hd->audio_configured = false;
622 hd->audio_playing = false;
623 mutex_unlock(&hd->lock);
628 static int hdmi_audio_start(struct device *dev)
630 struct omap_hdmi *hd = dev_get_drvdata(dev);
633 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
635 spin_lock_irqsave(&hd->audio_playing_lock, flags);
637 if (hd->display_enabled)
638 hdmi_start_audio_stream(hd);
639 hd->audio_playing = true;
641 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
645 static void hdmi_audio_stop(struct device *dev)
647 struct omap_hdmi *hd = dev_get_drvdata(dev);
650 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
652 spin_lock_irqsave(&hd->audio_playing_lock, flags);
654 if (hd->display_enabled)
655 hdmi_stop_audio_stream(hd);
656 hd->audio_playing = false;
658 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
661 static int hdmi_audio_config(struct device *dev,
662 struct omap_dss_audio *dss_audio)
664 struct omap_hdmi *hd = dev_get_drvdata(dev);
667 mutex_lock(&hd->lock);
669 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
674 ret = hdmi5_audio_config(&hd->core, &hd->wp, dss_audio,
675 hd->cfg.timings.pixelclock);
678 hd->audio_configured = true;
679 hd->audio_config = *dss_audio;
682 mutex_unlock(&hd->lock);
687 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
688 .audio_startup = hdmi_audio_startup,
689 .audio_shutdown = hdmi_audio_shutdown,
690 .audio_start = hdmi_audio_start,
691 .audio_stop = hdmi_audio_stop,
692 .audio_config = hdmi_audio_config,
695 static int hdmi_audio_register(struct device *dev)
697 struct omap_hdmi_audio_pdata pdata = {
699 .dss_version = omapdss_get_version(),
700 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
701 .ops = &hdmi_audio_ops,
704 hdmi.audio_pdev = platform_device_register_data(
705 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
706 &pdata, sizeof(pdata));
708 if (IS_ERR(hdmi.audio_pdev))
709 return PTR_ERR(hdmi.audio_pdev);
713 REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
719 /* HDMI HW IP initialisation */
720 static int hdmi5_bind(struct device *dev, struct device *master, void *data)
722 struct platform_device *pdev = to_platform_device(dev);
727 dev_set_drvdata(&pdev->dev, &hdmi);
729 mutex_init(&hdmi.lock);
730 spin_lock_init(&hdmi.audio_playing_lock);
732 if (pdev->dev.of_node) {
733 r = hdmi_probe_of(pdev);
738 r = hdmi_wp_init(pdev, &hdmi.wp);
742 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
746 r = hdmi_phy_init(pdev, &hdmi.phy);
750 r = hdmi5_core_init(pdev, &hdmi.core);
754 irq = platform_get_irq(pdev, 0);
756 DSSERR("platform_get_irq failed\n");
761 r = devm_request_threaded_irq(&pdev->dev, irq,
762 NULL, hdmi_irq_handler,
763 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
765 DSSERR("HDMI IRQ request failed\n");
769 pm_runtime_enable(&pdev->dev);
771 hdmi_init_output(pdev);
773 r = hdmi_audio_register(&pdev->dev);
775 DSSERR("Registering HDMI audio failed %d\n", r);
776 hdmi_uninit_output(pdev);
777 pm_runtime_disable(&pdev->dev);
781 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
785 hdmi_pll_uninit(&hdmi.pll);
789 static void hdmi5_unbind(struct device *dev, struct device *master, void *data)
791 struct platform_device *pdev = to_platform_device(dev);
794 platform_device_unregister(hdmi.audio_pdev);
796 hdmi_uninit_output(pdev);
798 hdmi_pll_uninit(&hdmi.pll);
800 pm_runtime_disable(&pdev->dev);
803 static const struct component_ops hdmi5_component_ops = {
805 .unbind = hdmi5_unbind,
808 static int hdmi5_probe(struct platform_device *pdev)
810 return component_add(&pdev->dev, &hdmi5_component_ops);
813 static int hdmi5_remove(struct platform_device *pdev)
815 component_del(&pdev->dev, &hdmi5_component_ops);
819 static int hdmi_runtime_suspend(struct device *dev)
826 static int hdmi_runtime_resume(struct device *dev)
830 r = dispc_runtime_get();
837 static const struct dev_pm_ops hdmi_pm_ops = {
838 .runtime_suspend = hdmi_runtime_suspend,
839 .runtime_resume = hdmi_runtime_resume,
842 static const struct of_device_id hdmi_of_match[] = {
843 { .compatible = "ti,omap5-hdmi", },
844 { .compatible = "ti,dra7-hdmi", },
848 static struct platform_driver omapdss_hdmihw_driver = {
849 .probe = hdmi5_probe,
850 .remove = hdmi5_remove,
852 .name = "omapdss_hdmi5",
854 .of_match_table = hdmi_of_match,
855 .suppress_bind_attrs = true,
859 int __init hdmi5_init_platform_driver(void)
861 return platform_driver_register(&omapdss_hdmihw_driver);
864 void hdmi5_uninit_platform_driver(void)
866 platform_driver_unregister(&omapdss_hdmihw_driver);