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/omapdss.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 if (regulator_can_change_voltage(reg)) {
135 r = regulator_set_voltage(reg, 1800000, 1800000);
137 devm_regulator_put(reg);
138 DSSWARN("can't set the regulator voltage\n");
148 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
152 r = regulator_enable(hdmi.vdda_reg);
156 r = hdmi_runtime_get();
158 goto err_runtime_get;
160 /* Make selection of HDMI in DSS */
161 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
163 hdmi.core_enabled = true;
168 regulator_disable(hdmi.vdda_reg);
173 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
175 hdmi.core_enabled = false;
178 regulator_disable(hdmi.vdda_reg);
181 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
184 struct omap_video_timings *p;
185 enum omap_channel channel = dssdev->dispc_channel;
186 struct dss_pll_clock_info hdmi_cinfo = { 0 };
189 r = hdmi_power_on_core(dssdev);
193 p = &hdmi.cfg.timings;
195 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
201 hdmi_pll_compute(&hdmi.pll, pc, &hdmi_cinfo);
203 /* disable and clear irqs */
204 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
205 hdmi_wp_set_irqstatus(&hdmi.wp,
206 hdmi_wp_get_irqstatus(&hdmi.wp));
208 r = dss_pll_enable(&hdmi.pll.pll);
210 DSSERR("Failed to enable PLL\n");
214 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
216 DSSERR("Failed to configure PLL\n");
220 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
221 hdmi_cinfo.clkout[0]);
223 DSSDBG("Failed to start PHY\n");
227 r = hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_LDOON);
231 hdmi5_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
233 /* bypass TV gamma table */
234 dispc_enable_gamma_table(0);
237 dss_mgr_set_timings(channel, p);
239 r = dss_mgr_enable(channel);
243 r = hdmi_wp_video_start(&hdmi.wp);
247 hdmi_wp_set_irqenable(&hdmi.wp,
248 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
253 dss_mgr_disable(channel);
255 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
259 dss_pll_disable(&hdmi.pll.pll);
261 hdmi_power_off_core(dssdev);
265 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
267 enum omap_channel channel = dssdev->dispc_channel;
269 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
271 hdmi_wp_video_stop(&hdmi.wp);
273 dss_mgr_disable(channel);
275 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
277 dss_pll_disable(&hdmi.pll.pll);
279 hdmi_power_off_core(dssdev);
282 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
283 struct omap_video_timings *timings)
285 if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
291 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
292 struct omap_video_timings *timings)
294 mutex_lock(&hdmi.lock);
296 hdmi.cfg.timings = *timings;
298 dispc_set_tv_pclk(timings->pixelclock);
300 mutex_unlock(&hdmi.lock);
303 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
304 struct omap_video_timings *timings)
306 *timings = hdmi.cfg.timings;
309 static void hdmi_dump_regs(struct seq_file *s)
311 mutex_lock(&hdmi.lock);
313 if (hdmi_runtime_get()) {
314 mutex_unlock(&hdmi.lock);
318 hdmi_wp_dump(&hdmi.wp, s);
319 hdmi_pll_dump(&hdmi.pll, s);
320 hdmi_phy_dump(&hdmi.phy, s);
321 hdmi5_core_dump(&hdmi.core, s);
324 mutex_unlock(&hdmi.lock);
327 static int read_edid(u8 *buf, int len)
332 mutex_lock(&hdmi.lock);
334 r = hdmi_runtime_get();
337 idlemode = REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
339 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
341 r = hdmi5_read_edid(&hdmi.core, buf, len);
343 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
346 mutex_unlock(&hdmi.lock);
351 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
353 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
354 hdmi_wp_audio_enable(&hd->wp, true);
355 hdmi_wp_audio_core_req_enable(&hd->wp, true);
358 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
360 hdmi_wp_audio_core_req_enable(&hd->wp, false);
361 hdmi_wp_audio_enable(&hd->wp, false);
362 REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2);
365 static int hdmi_display_enable(struct omap_dss_device *dssdev)
367 struct omap_dss_device *out = &hdmi.output;
371 DSSDBG("ENTER hdmi_display_enable\n");
373 mutex_lock(&hdmi.lock);
375 if (!out->dispc_channel_connected) {
376 DSSERR("failed to enable display: no output/manager\n");
381 r = hdmi_power_on_full(dssdev);
383 DSSERR("failed to power on device\n");
387 if (hdmi.audio_configured) {
388 r = hdmi5_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
389 hdmi.cfg.timings.pixelclock);
391 DSSERR("Error restoring audio configuration: %d", r);
392 hdmi.audio_abort_cb(&hdmi.pdev->dev);
393 hdmi.audio_configured = false;
397 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
398 if (hdmi.audio_configured && hdmi.audio_playing)
399 hdmi_start_audio_stream(&hdmi);
400 hdmi.display_enabled = true;
401 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
403 mutex_unlock(&hdmi.lock);
407 mutex_unlock(&hdmi.lock);
411 static void hdmi_display_disable(struct omap_dss_device *dssdev)
415 DSSDBG("Enter hdmi_display_disable\n");
417 mutex_lock(&hdmi.lock);
419 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
420 hdmi_stop_audio_stream(&hdmi);
421 hdmi.display_enabled = false;
422 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
424 hdmi_power_off_full(dssdev);
426 mutex_unlock(&hdmi.lock);
429 static int hdmi_core_enable(struct omap_dss_device *dssdev)
433 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
435 mutex_lock(&hdmi.lock);
437 r = hdmi_power_on_core(dssdev);
439 DSSERR("failed to power on device\n");
443 mutex_unlock(&hdmi.lock);
447 mutex_unlock(&hdmi.lock);
451 static void hdmi_core_disable(struct omap_dss_device *dssdev)
453 DSSDBG("Enter omapdss_hdmi_core_disable\n");
455 mutex_lock(&hdmi.lock);
457 hdmi_power_off_core(dssdev);
459 mutex_unlock(&hdmi.lock);
462 static int hdmi_connect(struct omap_dss_device *dssdev,
463 struct omap_dss_device *dst)
465 enum omap_channel channel = dssdev->dispc_channel;
468 r = hdmi_init_regulator();
472 r = dss_mgr_connect(channel, dssdev);
476 r = omapdss_output_set_device(dssdev, dst);
478 DSSERR("failed to connect output to new device: %s\n",
480 dss_mgr_disconnect(channel, dssdev);
487 static void hdmi_disconnect(struct omap_dss_device *dssdev,
488 struct omap_dss_device *dst)
490 enum omap_channel channel = dssdev->dispc_channel;
492 WARN_ON(dst != dssdev->dst);
494 if (dst != dssdev->dst)
497 omapdss_output_unset_device(dssdev);
499 dss_mgr_disconnect(channel, dssdev);
502 static int hdmi_read_edid(struct omap_dss_device *dssdev,
508 need_enable = hdmi.core_enabled == false;
511 r = hdmi_core_enable(dssdev);
516 r = read_edid(edid, len);
519 hdmi_core_disable(dssdev);
524 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
525 const struct hdmi_avi_infoframe *avi)
527 hdmi.cfg.infoframe = *avi;
531 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
534 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
538 static const struct omapdss_hdmi_ops hdmi_ops = {
539 .connect = hdmi_connect,
540 .disconnect = hdmi_disconnect,
542 .enable = hdmi_display_enable,
543 .disable = hdmi_display_disable,
545 .check_timings = hdmi_display_check_timing,
546 .set_timings = hdmi_display_set_timing,
547 .get_timings = hdmi_display_get_timings,
549 .read_edid = hdmi_read_edid,
550 .set_infoframe = hdmi_set_infoframe,
551 .set_hdmi_mode = hdmi_set_hdmi_mode,
554 static void hdmi_init_output(struct platform_device *pdev)
556 struct omap_dss_device *out = &hdmi.output;
558 out->dev = &pdev->dev;
559 out->id = OMAP_DSS_OUTPUT_HDMI;
560 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
561 out->name = "hdmi.0";
562 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
563 out->ops.hdmi = &hdmi_ops;
564 out->owner = THIS_MODULE;
566 omapdss_register_output(out);
569 static void hdmi_uninit_output(struct platform_device *pdev)
571 struct omap_dss_device *out = &hdmi.output;
573 omapdss_unregister_output(out);
576 static int hdmi_probe_of(struct platform_device *pdev)
578 struct device_node *node = pdev->dev.of_node;
579 struct device_node *ep;
582 ep = omapdss_of_get_first_endpoint(node);
586 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
598 /* Audio callbacks */
599 static int hdmi_audio_startup(struct device *dev,
600 void (*abort_cb)(struct device *dev))
602 struct omap_hdmi *hd = dev_get_drvdata(dev);
605 mutex_lock(&hd->lock);
607 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
612 hd->audio_abort_cb = abort_cb;
615 mutex_unlock(&hd->lock);
620 static int hdmi_audio_shutdown(struct device *dev)
622 struct omap_hdmi *hd = dev_get_drvdata(dev);
624 mutex_lock(&hd->lock);
625 hd->audio_abort_cb = NULL;
626 hd->audio_configured = false;
627 hd->audio_playing = false;
628 mutex_unlock(&hd->lock);
633 static int hdmi_audio_start(struct device *dev)
635 struct omap_hdmi *hd = dev_get_drvdata(dev);
638 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
640 spin_lock_irqsave(&hd->audio_playing_lock, flags);
642 if (hd->display_enabled)
643 hdmi_start_audio_stream(hd);
644 hd->audio_playing = true;
646 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
650 static void hdmi_audio_stop(struct device *dev)
652 struct omap_hdmi *hd = dev_get_drvdata(dev);
655 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
657 spin_lock_irqsave(&hd->audio_playing_lock, flags);
659 if (hd->display_enabled)
660 hdmi_stop_audio_stream(hd);
661 hd->audio_playing = false;
663 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
666 static int hdmi_audio_config(struct device *dev,
667 struct omap_dss_audio *dss_audio)
669 struct omap_hdmi *hd = dev_get_drvdata(dev);
672 mutex_lock(&hd->lock);
674 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
679 ret = hdmi5_audio_config(&hd->core, &hd->wp, dss_audio,
680 hd->cfg.timings.pixelclock);
683 hd->audio_configured = true;
684 hd->audio_config = *dss_audio;
687 mutex_unlock(&hd->lock);
692 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
693 .audio_startup = hdmi_audio_startup,
694 .audio_shutdown = hdmi_audio_shutdown,
695 .audio_start = hdmi_audio_start,
696 .audio_stop = hdmi_audio_stop,
697 .audio_config = hdmi_audio_config,
700 static int hdmi_audio_register(struct device *dev)
702 struct omap_hdmi_audio_pdata pdata = {
704 .dss_version = omapdss_get_version(),
705 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
706 .ops = &hdmi_audio_ops,
709 hdmi.audio_pdev = platform_device_register_data(
710 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
711 &pdata, sizeof(pdata));
713 if (IS_ERR(hdmi.audio_pdev))
714 return PTR_ERR(hdmi.audio_pdev);
718 REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
724 /* HDMI HW IP initialisation */
725 static int hdmi5_bind(struct device *dev, struct device *master, void *data)
727 struct platform_device *pdev = to_platform_device(dev);
732 dev_set_drvdata(&pdev->dev, &hdmi);
734 mutex_init(&hdmi.lock);
735 spin_lock_init(&hdmi.audio_playing_lock);
737 if (pdev->dev.of_node) {
738 r = hdmi_probe_of(pdev);
743 r = hdmi_wp_init(pdev, &hdmi.wp);
747 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
751 r = hdmi_phy_init(pdev, &hdmi.phy);
755 r = hdmi5_core_init(pdev, &hdmi.core);
759 irq = platform_get_irq(pdev, 0);
761 DSSERR("platform_get_irq failed\n");
766 r = devm_request_threaded_irq(&pdev->dev, irq,
767 NULL, hdmi_irq_handler,
768 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
770 DSSERR("HDMI IRQ request failed\n");
774 pm_runtime_enable(&pdev->dev);
776 hdmi_init_output(pdev);
778 r = hdmi_audio_register(&pdev->dev);
780 DSSERR("Registering HDMI audio failed %d\n", r);
781 hdmi_uninit_output(pdev);
782 pm_runtime_disable(&pdev->dev);
786 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
790 hdmi_pll_uninit(&hdmi.pll);
794 static void hdmi5_unbind(struct device *dev, struct device *master, void *data)
796 struct platform_device *pdev = to_platform_device(dev);
799 platform_device_unregister(hdmi.audio_pdev);
801 hdmi_uninit_output(pdev);
803 hdmi_pll_uninit(&hdmi.pll);
805 pm_runtime_disable(&pdev->dev);
808 static const struct component_ops hdmi5_component_ops = {
810 .unbind = hdmi5_unbind,
813 static int hdmi5_probe(struct platform_device *pdev)
815 return component_add(&pdev->dev, &hdmi5_component_ops);
818 static int hdmi5_remove(struct platform_device *pdev)
820 component_del(&pdev->dev, &hdmi5_component_ops);
824 static int hdmi_runtime_suspend(struct device *dev)
831 static int hdmi_runtime_resume(struct device *dev)
835 r = dispc_runtime_get();
842 static const struct dev_pm_ops hdmi_pm_ops = {
843 .runtime_suspend = hdmi_runtime_suspend,
844 .runtime_resume = hdmi_runtime_resume,
847 static const struct of_device_id hdmi_of_match[] = {
848 { .compatible = "ti,omap5-hdmi", },
849 { .compatible = "ti,dra7-hdmi", },
853 static struct platform_driver omapdss_hdmihw_driver = {
854 .probe = hdmi5_probe,
855 .remove = hdmi5_remove,
857 .name = "omapdss_hdmi5",
859 .of_match_table = hdmi_of_match,
860 .suppress_bind_attrs = true,
864 int __init hdmi5_init_platform_driver(void)
866 return platform_driver_register(&omapdss_hdmihw_driver);
869 void hdmi5_uninit_platform_driver(void)
871 platform_driver_unregister(&omapdss_hdmihw_driver);