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>
42 #include <video/omapdss.h>
43 #include <sound/omap-hdmi-audio.h>
45 #include "hdmi5_core.h"
47 #include "dss_features.h"
49 static struct omap_hdmi hdmi;
51 static int hdmi_runtime_get(void)
55 DSSDBG("hdmi_runtime_get\n");
57 r = pm_runtime_get_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)
124 struct regulator *reg;
126 if (hdmi.vdda_reg != NULL)
129 reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
131 DSSERR("can't get VDDA regulator\n");
140 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
144 r = regulator_enable(hdmi.vdda_reg);
148 r = hdmi_runtime_get();
150 goto err_runtime_get;
152 /* Make selection of HDMI in DSS */
153 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
155 hdmi.core_enabled = true;
160 regulator_disable(hdmi.vdda_reg);
165 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
167 hdmi.core_enabled = false;
170 regulator_disable(hdmi.vdda_reg);
173 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
176 struct omap_video_timings *p;
177 enum omap_channel channel = dssdev->dispc_channel;
178 struct dss_pll_clock_info hdmi_cinfo = { 0 };
181 r = hdmi_power_on_core(dssdev);
185 p = &hdmi.cfg.timings;
187 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
193 /* DSS_HDMI_TCLK is bitclk / 10 */
196 dss_pll_calc_b(&hdmi.pll.pll, clk_get_rate(hdmi.pll.pll.clkin),
199 /* disable and clear irqs */
200 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
201 hdmi_wp_set_irqstatus(&hdmi.wp,
202 hdmi_wp_get_irqstatus(&hdmi.wp));
204 r = dss_pll_enable(&hdmi.pll.pll);
206 DSSERR("Failed to enable PLL\n");
210 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
212 DSSERR("Failed to configure PLL\n");
216 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
217 hdmi_cinfo.clkout[0]);
219 DSSDBG("Failed to start PHY\n");
223 r = hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_LDOON);
227 hdmi5_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
229 /* bypass TV gamma table */
230 dispc_enable_gamma_table(0);
233 dss_mgr_set_timings(channel, p);
235 r = dss_mgr_enable(channel);
239 r = hdmi_wp_video_start(&hdmi.wp);
243 hdmi_wp_set_irqenable(&hdmi.wp,
244 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
249 dss_mgr_disable(channel);
251 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
255 dss_pll_disable(&hdmi.pll.pll);
257 hdmi_power_off_core(dssdev);
261 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
263 enum omap_channel channel = dssdev->dispc_channel;
265 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
267 hdmi_wp_video_stop(&hdmi.wp);
269 dss_mgr_disable(channel);
271 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
273 dss_pll_disable(&hdmi.pll.pll);
275 hdmi_power_off_core(dssdev);
278 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
279 struct omap_video_timings *timings)
281 if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
287 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
288 struct omap_video_timings *timings)
290 mutex_lock(&hdmi.lock);
292 hdmi.cfg.timings = *timings;
294 dispc_set_tv_pclk(timings->pixelclock);
296 mutex_unlock(&hdmi.lock);
299 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
300 struct omap_video_timings *timings)
302 *timings = hdmi.cfg.timings;
305 static void hdmi_dump_regs(struct seq_file *s)
307 mutex_lock(&hdmi.lock);
309 if (hdmi_runtime_get()) {
310 mutex_unlock(&hdmi.lock);
314 hdmi_wp_dump(&hdmi.wp, s);
315 hdmi_pll_dump(&hdmi.pll, s);
316 hdmi_phy_dump(&hdmi.phy, s);
317 hdmi5_core_dump(&hdmi.core, s);
320 mutex_unlock(&hdmi.lock);
323 static int read_edid(u8 *buf, int len)
328 mutex_lock(&hdmi.lock);
330 r = hdmi_runtime_get();
333 idlemode = REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
335 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
337 r = hdmi5_read_edid(&hdmi.core, buf, len);
339 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2);
342 mutex_unlock(&hdmi.lock);
347 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
349 REG_FLD_MOD(hdmi.wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2);
350 hdmi_wp_audio_enable(&hd->wp, true);
351 hdmi_wp_audio_core_req_enable(&hd->wp, true);
354 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
356 hdmi_wp_audio_core_req_enable(&hd->wp, false);
357 hdmi_wp_audio_enable(&hd->wp, false);
358 REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2);
361 static int hdmi_display_enable(struct omap_dss_device *dssdev)
363 struct omap_dss_device *out = &hdmi.output;
367 DSSDBG("ENTER hdmi_display_enable\n");
369 mutex_lock(&hdmi.lock);
371 if (!out->dispc_channel_connected) {
372 DSSERR("failed to enable display: no output/manager\n");
377 r = hdmi_power_on_full(dssdev);
379 DSSERR("failed to power on device\n");
383 if (hdmi.audio_configured) {
384 r = hdmi5_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
385 hdmi.cfg.timings.pixelclock);
387 DSSERR("Error restoring audio configuration: %d", r);
388 hdmi.audio_abort_cb(&hdmi.pdev->dev);
389 hdmi.audio_configured = false;
393 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
394 if (hdmi.audio_configured && hdmi.audio_playing)
395 hdmi_start_audio_stream(&hdmi);
396 hdmi.display_enabled = true;
397 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
399 mutex_unlock(&hdmi.lock);
403 mutex_unlock(&hdmi.lock);
407 static void hdmi_display_disable(struct omap_dss_device *dssdev)
411 DSSDBG("Enter hdmi_display_disable\n");
413 mutex_lock(&hdmi.lock);
415 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
416 hdmi_stop_audio_stream(&hdmi);
417 hdmi.display_enabled = false;
418 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
420 hdmi_power_off_full(dssdev);
422 mutex_unlock(&hdmi.lock);
425 static int hdmi_core_enable(struct omap_dss_device *dssdev)
429 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
431 mutex_lock(&hdmi.lock);
433 r = hdmi_power_on_core(dssdev);
435 DSSERR("failed to power on device\n");
439 mutex_unlock(&hdmi.lock);
443 mutex_unlock(&hdmi.lock);
447 static void hdmi_core_disable(struct omap_dss_device *dssdev)
449 DSSDBG("Enter omapdss_hdmi_core_disable\n");
451 mutex_lock(&hdmi.lock);
453 hdmi_power_off_core(dssdev);
455 mutex_unlock(&hdmi.lock);
458 static int hdmi_connect(struct omap_dss_device *dssdev,
459 struct omap_dss_device *dst)
461 enum omap_channel channel = dssdev->dispc_channel;
464 r = hdmi_init_regulator();
468 r = dss_mgr_connect(channel, dssdev);
472 r = omapdss_output_set_device(dssdev, dst);
474 DSSERR("failed to connect output to new device: %s\n",
476 dss_mgr_disconnect(channel, dssdev);
483 static void hdmi_disconnect(struct omap_dss_device *dssdev,
484 struct omap_dss_device *dst)
486 enum omap_channel channel = dssdev->dispc_channel;
488 WARN_ON(dst != dssdev->dst);
490 if (dst != dssdev->dst)
493 omapdss_output_unset_device(dssdev);
495 dss_mgr_disconnect(channel, dssdev);
498 static int hdmi_read_edid(struct omap_dss_device *dssdev,
504 need_enable = hdmi.core_enabled == false;
507 r = hdmi_core_enable(dssdev);
512 r = read_edid(edid, len);
515 hdmi_core_disable(dssdev);
520 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
521 const struct hdmi_avi_infoframe *avi)
523 hdmi.cfg.infoframe = *avi;
527 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
530 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
534 static const struct omapdss_hdmi_ops hdmi_ops = {
535 .connect = hdmi_connect,
536 .disconnect = hdmi_disconnect,
538 .enable = hdmi_display_enable,
539 .disable = hdmi_display_disable,
541 .check_timings = hdmi_display_check_timing,
542 .set_timings = hdmi_display_set_timing,
543 .get_timings = hdmi_display_get_timings,
545 .read_edid = hdmi_read_edid,
546 .set_infoframe = hdmi_set_infoframe,
547 .set_hdmi_mode = hdmi_set_hdmi_mode,
550 static void hdmi_init_output(struct platform_device *pdev)
552 struct omap_dss_device *out = &hdmi.output;
554 out->dev = &pdev->dev;
555 out->id = OMAP_DSS_OUTPUT_HDMI;
556 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
557 out->name = "hdmi.0";
558 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
559 out->ops.hdmi = &hdmi_ops;
560 out->owner = THIS_MODULE;
562 omapdss_register_output(out);
565 static void hdmi_uninit_output(struct platform_device *pdev)
567 struct omap_dss_device *out = &hdmi.output;
569 omapdss_unregister_output(out);
572 static int hdmi_probe_of(struct platform_device *pdev)
574 struct device_node *node = pdev->dev.of_node;
575 struct device_node *ep;
578 ep = omapdss_of_get_first_endpoint(node);
582 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
594 /* Audio callbacks */
595 static int hdmi_audio_startup(struct device *dev,
596 void (*abort_cb)(struct device *dev))
598 struct omap_hdmi *hd = dev_get_drvdata(dev);
601 mutex_lock(&hd->lock);
603 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
608 hd->audio_abort_cb = abort_cb;
611 mutex_unlock(&hd->lock);
616 static int hdmi_audio_shutdown(struct device *dev)
618 struct omap_hdmi *hd = dev_get_drvdata(dev);
620 mutex_lock(&hd->lock);
621 hd->audio_abort_cb = NULL;
622 hd->audio_configured = false;
623 hd->audio_playing = false;
624 mutex_unlock(&hd->lock);
629 static int hdmi_audio_start(struct device *dev)
631 struct omap_hdmi *hd = dev_get_drvdata(dev);
634 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
636 spin_lock_irqsave(&hd->audio_playing_lock, flags);
638 if (hd->display_enabled)
639 hdmi_start_audio_stream(hd);
640 hd->audio_playing = true;
642 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
646 static void hdmi_audio_stop(struct device *dev)
648 struct omap_hdmi *hd = dev_get_drvdata(dev);
651 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
653 spin_lock_irqsave(&hd->audio_playing_lock, flags);
655 if (hd->display_enabled)
656 hdmi_stop_audio_stream(hd);
657 hd->audio_playing = false;
659 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
662 static int hdmi_audio_config(struct device *dev,
663 struct omap_dss_audio *dss_audio)
665 struct omap_hdmi *hd = dev_get_drvdata(dev);
668 mutex_lock(&hd->lock);
670 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
675 ret = hdmi5_audio_config(&hd->core, &hd->wp, dss_audio,
676 hd->cfg.timings.pixelclock);
679 hd->audio_configured = true;
680 hd->audio_config = *dss_audio;
683 mutex_unlock(&hd->lock);
688 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
689 .audio_startup = hdmi_audio_startup,
690 .audio_shutdown = hdmi_audio_shutdown,
691 .audio_start = hdmi_audio_start,
692 .audio_stop = hdmi_audio_stop,
693 .audio_config = hdmi_audio_config,
696 static int hdmi_audio_register(struct device *dev)
698 struct omap_hdmi_audio_pdata pdata = {
700 .dss_version = omapdss_get_version(),
701 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
702 .ops = &hdmi_audio_ops,
705 hdmi.audio_pdev = platform_device_register_data(
706 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
707 &pdata, sizeof(pdata));
709 if (IS_ERR(hdmi.audio_pdev))
710 return PTR_ERR(hdmi.audio_pdev);
714 REG_GET(hdmi.wp.base, HDMI_WP_SYSCONFIG, 3, 2);
720 /* HDMI HW IP initialisation */
721 static int hdmi5_bind(struct device *dev, struct device *master, void *data)
723 struct platform_device *pdev = to_platform_device(dev);
728 dev_set_drvdata(&pdev->dev, &hdmi);
730 mutex_init(&hdmi.lock);
731 spin_lock_init(&hdmi.audio_playing_lock);
733 if (pdev->dev.of_node) {
734 r = hdmi_probe_of(pdev);
739 r = hdmi_wp_init(pdev, &hdmi.wp);
743 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
747 r = hdmi_phy_init(pdev, &hdmi.phy);
751 r = hdmi5_core_init(pdev, &hdmi.core);
755 irq = platform_get_irq(pdev, 0);
757 DSSERR("platform_get_irq failed\n");
762 r = devm_request_threaded_irq(&pdev->dev, irq,
763 NULL, hdmi_irq_handler,
764 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
766 DSSERR("HDMI IRQ request failed\n");
770 pm_runtime_enable(&pdev->dev);
772 hdmi_init_output(pdev);
774 r = hdmi_audio_register(&pdev->dev);
776 DSSERR("Registering HDMI audio failed %d\n", r);
777 hdmi_uninit_output(pdev);
778 pm_runtime_disable(&pdev->dev);
782 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
786 hdmi_pll_uninit(&hdmi.pll);
790 static void hdmi5_unbind(struct device *dev, struct device *master, void *data)
792 struct platform_device *pdev = to_platform_device(dev);
795 platform_device_unregister(hdmi.audio_pdev);
797 hdmi_uninit_output(pdev);
799 hdmi_pll_uninit(&hdmi.pll);
801 pm_runtime_disable(&pdev->dev);
804 static const struct component_ops hdmi5_component_ops = {
806 .unbind = hdmi5_unbind,
809 static int hdmi5_probe(struct platform_device *pdev)
811 return component_add(&pdev->dev, &hdmi5_component_ops);
814 static int hdmi5_remove(struct platform_device *pdev)
816 component_del(&pdev->dev, &hdmi5_component_ops);
820 static int hdmi_runtime_suspend(struct device *dev)
827 static int hdmi_runtime_resume(struct device *dev)
831 r = dispc_runtime_get();
838 static const struct dev_pm_ops hdmi_pm_ops = {
839 .runtime_suspend = hdmi_runtime_suspend,
840 .runtime_resume = hdmi_runtime_resume,
843 static const struct of_device_id hdmi_of_match[] = {
844 { .compatible = "ti,omap5-hdmi", },
845 { .compatible = "ti,dra7-hdmi", },
849 static struct platform_driver omapdss_hdmihw_driver = {
850 .probe = hdmi5_probe,
851 .remove = hdmi5_remove,
853 .name = "omapdss_hdmi5",
855 .of_match_table = hdmi_of_match,
856 .suppress_bind_attrs = true,
860 int __init hdmi5_init_platform_driver(void)
862 return platform_driver_register(&omapdss_hdmihw_driver);
865 void hdmi5_uninit_platform_driver(void)
867 platform_driver_unregister(&omapdss_hdmihw_driver);