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);
64 static void hdmi_runtime_put(void)
68 DSSDBG("hdmi_runtime_put\n");
70 r = pm_runtime_put_sync(&hdmi.pdev->dev);
71 WARN_ON(r < 0 && r != -ENOSYS);
74 static irqreturn_t hdmi_irq_handler(int irq, void *data)
76 struct hdmi_wp_data *wp = data;
79 irqstatus = hdmi_wp_get_irqstatus(wp);
80 hdmi_wp_set_irqstatus(wp, irqstatus);
82 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
83 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
86 * If we get both connect and disconnect interrupts at the same
87 * time, turn off the PHY, clear interrupts, and restart, which
88 * raises connect interrupt if a cable is connected, or nothing
89 * if cable is not connected.
92 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
95 * We always get bogus CONNECT & DISCONNECT interrupts when
96 * setting the PHY to LDOON. To ignore those, we force the RXDET
97 * line to 0 until the PHY power state has been changed.
99 v = hdmi_read_reg(hdmi.phy.base, HDMI_TXPHY_PAD_CFG_CTRL);
100 v = FLD_MOD(v, 1, 15, 15); /* FORCE_RXDET_HIGH */
101 v = FLD_MOD(v, 0, 14, 7); /* RXDET_LINE */
102 hdmi_write_reg(hdmi.phy.base, HDMI_TXPHY_PAD_CFG_CTRL, v);
104 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
105 HDMI_IRQ_LINK_DISCONNECT);
107 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
109 REG_FLD_MOD(hdmi.phy.base, HDMI_TXPHY_PAD_CFG_CTRL, 0, 15, 15);
111 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
112 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
113 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
114 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
120 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");
134 r = regulator_set_voltage(reg, 1800000, 1800000);
136 devm_regulator_put(reg);
137 DSSWARN("can't set the regulator voltage\n");
146 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
150 r = regulator_enable(hdmi.vdda_reg);
154 r = hdmi_runtime_get();
156 goto err_runtime_get;
158 /* Make selection of HDMI in DSS */
159 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
161 hdmi.core_enabled = true;
166 regulator_disable(hdmi.vdda_reg);
171 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
173 hdmi.core_enabled = false;
176 regulator_disable(hdmi.vdda_reg);
179 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
182 struct omap_video_timings *p;
183 struct omap_overlay_manager *mgr = hdmi.output.manager;
184 struct dss_pll_clock_info hdmi_cinfo = { 0 };
186 r = hdmi_power_on_core(dssdev);
190 p = &hdmi.cfg.timings;
192 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
194 hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
196 /* disable and clear irqs */
197 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
198 hdmi_wp_set_irqstatus(&hdmi.wp,
199 hdmi_wp_get_irqstatus(&hdmi.wp));
201 r = dss_pll_enable(&hdmi.pll.pll);
203 DSSERR("Failed to enable PLL\n");
207 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
209 DSSERR("Failed to configure PLL\n");
213 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
214 hdmi_cinfo.clkout[0]);
216 DSSDBG("Failed to start PHY\n");
220 r = hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_LDOON);
224 hdmi5_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
226 /* bypass TV gamma table */
227 dispc_enable_gamma_table(0);
230 dss_mgr_set_timings(mgr, p);
232 r = hdmi_wp_video_start(&hdmi.wp);
236 r = dss_mgr_enable(mgr);
240 hdmi_wp_set_irqenable(&hdmi.wp,
241 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
246 hdmi_wp_video_stop(&hdmi.wp);
248 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
252 dss_pll_disable(&hdmi.pll.pll);
254 hdmi_power_off_core(dssdev);
258 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
260 struct omap_overlay_manager *mgr = hdmi.output.manager;
262 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
264 dss_mgr_disable(mgr);
266 hdmi_wp_video_stop(&hdmi.wp);
268 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
270 dss_pll_disable(&hdmi.pll.pll);
272 hdmi_power_off_core(dssdev);
275 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
276 struct omap_video_timings *timings)
278 struct omap_dss_device *out = &hdmi.output;
280 /* TODO: proper interlace support */
281 if (timings->interlace)
284 if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
290 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
291 struct omap_video_timings *timings)
293 mutex_lock(&hdmi.lock);
295 hdmi.cfg.timings = *timings;
297 dispc_set_tv_pclk(timings->pixelclock);
299 mutex_unlock(&hdmi.lock);
302 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
303 struct omap_video_timings *timings)
305 *timings = hdmi.cfg.timings;
308 static void hdmi_dump_regs(struct seq_file *s)
310 mutex_lock(&hdmi.lock);
312 if (hdmi_runtime_get()) {
313 mutex_unlock(&hdmi.lock);
317 hdmi_wp_dump(&hdmi.wp, s);
318 hdmi_pll_dump(&hdmi.pll, s);
319 hdmi_phy_dump(&hdmi.phy, s);
320 hdmi5_core_dump(&hdmi.core, s);
323 mutex_unlock(&hdmi.lock);
326 static int read_edid(u8 *buf, int len)
331 mutex_lock(&hdmi.lock);
333 r = hdmi_runtime_get();
336 idlemode = REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
338 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
340 r = hdmi5_read_edid(&hdmi.core, buf, len);
342 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
345 mutex_unlock(&hdmi.lock);
350 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
352 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
353 hdmi_wp_audio_enable(&hd->wp, true);
354 hdmi_wp_audio_core_req_enable(&hd->wp, true);
357 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
359 hdmi_wp_audio_core_req_enable(&hd->wp, false);
360 hdmi_wp_audio_enable(&hd->wp, false);
361 REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2);
364 static int hdmi_display_enable(struct omap_dss_device *dssdev)
366 struct omap_dss_device *out = &hdmi.output;
370 DSSDBG("ENTER hdmi_display_enable\n");
372 mutex_lock(&hdmi.lock);
374 if (out->manager == NULL) {
375 DSSERR("failed to enable display: no output/manager\n");
380 r = hdmi_power_on_full(dssdev);
382 DSSERR("failed to power on device\n");
386 if (hdmi.audio_configured) {
387 r = hdmi5_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
388 hdmi.cfg.timings.pixelclock);
390 DSSERR("Error restoring audio configuration: %d", r);
391 hdmi.audio_abort_cb(&hdmi.pdev->dev);
392 hdmi.audio_configured = false;
396 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
397 if (hdmi.audio_configured && hdmi.audio_playing)
398 hdmi_start_audio_stream(&hdmi);
399 hdmi.display_enabled = true;
400 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
402 mutex_unlock(&hdmi.lock);
406 mutex_unlock(&hdmi.lock);
410 static void hdmi_display_disable(struct omap_dss_device *dssdev)
414 DSSDBG("Enter hdmi_display_disable\n");
416 mutex_lock(&hdmi.lock);
418 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
419 hdmi_stop_audio_stream(&hdmi);
420 hdmi.display_enabled = false;
421 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
423 hdmi_power_off_full(dssdev);
425 mutex_unlock(&hdmi.lock);
428 static int hdmi_core_enable(struct omap_dss_device *dssdev)
432 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
434 mutex_lock(&hdmi.lock);
436 r = hdmi_power_on_core(dssdev);
438 DSSERR("failed to power on device\n");
442 mutex_unlock(&hdmi.lock);
446 mutex_unlock(&hdmi.lock);
450 static void hdmi_core_disable(struct omap_dss_device *dssdev)
452 DSSDBG("Enter omapdss_hdmi_core_disable\n");
454 mutex_lock(&hdmi.lock);
456 hdmi_power_off_core(dssdev);
458 mutex_unlock(&hdmi.lock);
461 static int hdmi_connect(struct omap_dss_device *dssdev,
462 struct omap_dss_device *dst)
464 struct omap_overlay_manager *mgr;
467 r = hdmi_init_regulator();
471 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
475 r = dss_mgr_connect(mgr, dssdev);
479 r = omapdss_output_set_device(dssdev, dst);
481 DSSERR("failed to connect output to new device: %s\n",
483 dss_mgr_disconnect(mgr, dssdev);
490 static void hdmi_disconnect(struct omap_dss_device *dssdev,
491 struct omap_dss_device *dst)
493 WARN_ON(dst != dssdev->dst);
495 if (dst != dssdev->dst)
498 omapdss_output_unset_device(dssdev);
501 dss_mgr_disconnect(dssdev->manager, dssdev);
504 static int hdmi_read_edid(struct omap_dss_device *dssdev,
510 need_enable = hdmi.core_enabled == false;
513 r = hdmi_core_enable(dssdev);
518 r = read_edid(edid, len);
521 hdmi_core_disable(dssdev);
526 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
527 const struct hdmi_avi_infoframe *avi)
529 hdmi.cfg.infoframe = *avi;
533 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
536 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
540 static const struct omapdss_hdmi_ops hdmi_ops = {
541 .connect = hdmi_connect,
542 .disconnect = hdmi_disconnect,
544 .enable = hdmi_display_enable,
545 .disable = hdmi_display_disable,
547 .check_timings = hdmi_display_check_timing,
548 .set_timings = hdmi_display_set_timing,
549 .get_timings = hdmi_display_get_timings,
551 .read_edid = hdmi_read_edid,
552 .set_infoframe = hdmi_set_infoframe,
553 .set_hdmi_mode = hdmi_set_hdmi_mode,
556 static void hdmi_init_output(struct platform_device *pdev)
558 struct omap_dss_device *out = &hdmi.output;
560 out->dev = &pdev->dev;
561 out->id = OMAP_DSS_OUTPUT_HDMI;
562 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
563 out->name = "hdmi.0";
564 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
565 out->ops.hdmi = &hdmi_ops;
566 out->owner = THIS_MODULE;
568 omapdss_register_output(out);
571 static void hdmi_uninit_output(struct platform_device *pdev)
573 struct omap_dss_device *out = &hdmi.output;
575 omapdss_unregister_output(out);
578 static int hdmi_probe_of(struct platform_device *pdev)
580 struct device_node *node = pdev->dev.of_node;
581 struct device_node *ep;
584 ep = omapdss_of_get_first_endpoint(node);
588 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
600 /* Audio callbacks */
601 static int hdmi_audio_startup(struct device *dev,
602 void (*abort_cb)(struct device *dev))
604 struct omap_hdmi *hd = dev_get_drvdata(dev);
607 mutex_lock(&hd->lock);
609 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
614 hd->audio_abort_cb = abort_cb;
617 mutex_unlock(&hd->lock);
622 static int hdmi_audio_shutdown(struct device *dev)
624 struct omap_hdmi *hd = dev_get_drvdata(dev);
626 mutex_lock(&hd->lock);
627 hd->audio_abort_cb = NULL;
628 hd->audio_configured = false;
629 hd->audio_playing = false;
630 mutex_unlock(&hd->lock);
635 static int hdmi_audio_start(struct device *dev)
637 struct omap_hdmi *hd = dev_get_drvdata(dev);
640 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
642 spin_lock_irqsave(&hd->audio_playing_lock, flags);
644 if (hd->display_enabled)
645 hdmi_start_audio_stream(hd);
646 hd->audio_playing = true;
648 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
652 static void hdmi_audio_stop(struct device *dev)
654 struct omap_hdmi *hd = dev_get_drvdata(dev);
657 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
659 spin_lock_irqsave(&hd->audio_playing_lock, flags);
661 if (hd->display_enabled)
662 hdmi_stop_audio_stream(hd);
663 hd->audio_playing = false;
665 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
668 static int hdmi_audio_config(struct device *dev,
669 struct omap_dss_audio *dss_audio)
671 struct omap_hdmi *hd = dev_get_drvdata(dev);
674 mutex_lock(&hd->lock);
676 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
681 ret = hdmi5_audio_config(&hd->core, &hd->wp, dss_audio,
682 hd->cfg.timings.pixelclock);
685 hd->audio_configured = true;
686 hd->audio_config = *dss_audio;
689 mutex_unlock(&hd->lock);
694 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
695 .audio_startup = hdmi_audio_startup,
696 .audio_shutdown = hdmi_audio_shutdown,
697 .audio_start = hdmi_audio_start,
698 .audio_stop = hdmi_audio_stop,
699 .audio_config = hdmi_audio_config,
702 static int hdmi_audio_register(struct device *dev)
704 struct omap_hdmi_audio_pdata pdata = {
706 .dss_version = omapdss_get_version(),
707 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
708 .ops = &hdmi_audio_ops,
711 hdmi.audio_pdev = platform_device_register_data(
712 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
713 &pdata, sizeof(pdata));
715 if (IS_ERR(hdmi.audio_pdev))
716 return PTR_ERR(hdmi.audio_pdev);
720 REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
726 /* HDMI HW IP initialisation */
727 static int hdmi5_bind(struct device *dev, struct device *master, void *data)
729 struct platform_device *pdev = to_platform_device(dev);
734 dev_set_drvdata(&pdev->dev, &hdmi);
736 mutex_init(&hdmi.lock);
737 spin_lock_init(&hdmi.audio_playing_lock);
739 if (pdev->dev.of_node) {
740 r = hdmi_probe_of(pdev);
745 r = hdmi_wp_init(pdev, &hdmi.wp);
749 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
753 r = hdmi_phy_init(pdev, &hdmi.phy);
757 r = hdmi5_core_init(pdev, &hdmi.core);
761 irq = platform_get_irq(pdev, 0);
763 DSSERR("platform_get_irq failed\n");
768 r = devm_request_threaded_irq(&pdev->dev, irq,
769 NULL, hdmi_irq_handler,
770 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
772 DSSERR("HDMI IRQ request failed\n");
776 pm_runtime_enable(&pdev->dev);
778 hdmi_init_output(pdev);
780 r = hdmi_audio_register(&pdev->dev);
782 DSSERR("Registering HDMI audio failed %d\n", r);
783 hdmi_uninit_output(pdev);
784 pm_runtime_disable(&pdev->dev);
788 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
792 hdmi_pll_uninit(&hdmi.pll);
796 static void hdmi5_unbind(struct device *dev, struct device *master, void *data)
798 struct platform_device *pdev = to_platform_device(dev);
801 platform_device_unregister(hdmi.audio_pdev);
803 hdmi_uninit_output(pdev);
805 hdmi_pll_uninit(&hdmi.pll);
807 pm_runtime_disable(&pdev->dev);
810 static const struct component_ops hdmi5_component_ops = {
812 .unbind = hdmi5_unbind,
815 static int hdmi5_probe(struct platform_device *pdev)
817 return component_add(&pdev->dev, &hdmi5_component_ops);
820 static int hdmi5_remove(struct platform_device *pdev)
822 component_del(&pdev->dev, &hdmi5_component_ops);
826 static int hdmi_runtime_suspend(struct device *dev)
833 static int hdmi_runtime_resume(struct device *dev)
837 r = dispc_runtime_get();
844 static const struct dev_pm_ops hdmi_pm_ops = {
845 .runtime_suspend = hdmi_runtime_suspend,
846 .runtime_resume = hdmi_runtime_resume,
849 static const struct of_device_id hdmi_of_match[] = {
850 { .compatible = "ti,omap5-hdmi", },
851 { .compatible = "ti,dra7-hdmi", },
855 static struct platform_driver omapdss_hdmihw_driver = {
856 .probe = hdmi5_probe,
857 .remove = hdmi5_remove,
859 .name = "omapdss_hdmi5",
861 .of_match_table = hdmi_of_match,
862 .suppress_bind_attrs = true,
866 int __init hdmi5_init_platform_driver(void)
868 return platform_driver_register(&omapdss_hdmihw_driver);
871 void hdmi5_uninit_platform_driver(void)
873 platform_driver_unregister(&omapdss_hdmihw_driver);