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)
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 enum omap_channel channel
= dssdev
->dispc_channel
;
177 struct dss_pll_clock_info hdmi_cinfo
= { 0 };
180 r
= hdmi_power_on_core(dssdev
);
184 p
= &hdmi
.cfg
.timings
;
186 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p
->x_res
, p
->y_res
);
192 hdmi_pll_compute(&hdmi
.pll
, pc
, &hdmi_cinfo
);
194 /* disable and clear irqs */
195 hdmi_wp_clear_irqenable(&hdmi
.wp
, 0xffffffff);
196 hdmi_wp_set_irqstatus(&hdmi
.wp
,
197 hdmi_wp_get_irqstatus(&hdmi
.wp
));
199 r
= dss_pll_enable(&hdmi
.pll
.pll
);
201 DSSERR("Failed to enable PLL\n");
205 r
= dss_pll_set_config(&hdmi
.pll
.pll
, &hdmi_cinfo
);
207 DSSERR("Failed to configure PLL\n");
211 r
= hdmi_phy_configure(&hdmi
.phy
, hdmi_cinfo
.clkdco
,
212 hdmi_cinfo
.clkout
[0]);
214 DSSDBG("Failed to start PHY\n");
218 r
= hdmi_wp_set_phy_pwr(&hdmi
.wp
, HDMI_PHYPWRCMD_LDOON
);
222 hdmi5_configure(&hdmi
.core
, &hdmi
.wp
, &hdmi
.cfg
);
224 /* bypass TV gamma table */
225 dispc_enable_gamma_table(0);
228 dss_mgr_set_timings(channel
, p
);
230 r
= dss_mgr_enable(channel
);
234 r
= hdmi_wp_video_start(&hdmi
.wp
);
238 hdmi_wp_set_irqenable(&hdmi
.wp
,
239 HDMI_IRQ_LINK_CONNECT
| HDMI_IRQ_LINK_DISCONNECT
);
244 dss_mgr_disable(channel
);
246 hdmi_wp_set_phy_pwr(&hdmi
.wp
, HDMI_PHYPWRCMD_OFF
);
250 dss_pll_disable(&hdmi
.pll
.pll
);
252 hdmi_power_off_core(dssdev
);
256 static void hdmi_power_off_full(struct omap_dss_device
*dssdev
)
258 enum omap_channel channel
= dssdev
->dispc_channel
;
260 hdmi_wp_clear_irqenable(&hdmi
.wp
, 0xffffffff);
262 hdmi_wp_video_stop(&hdmi
.wp
);
264 dss_mgr_disable(channel
);
266 hdmi_wp_set_phy_pwr(&hdmi
.wp
, HDMI_PHYPWRCMD_OFF
);
268 dss_pll_disable(&hdmi
.pll
.pll
);
270 hdmi_power_off_core(dssdev
);
273 static int hdmi_display_check_timing(struct omap_dss_device
*dssdev
,
274 struct omap_video_timings
*timings
)
276 if (!dispc_mgr_timings_ok(dssdev
->dispc_channel
, timings
))
282 static void hdmi_display_set_timing(struct omap_dss_device
*dssdev
,
283 struct omap_video_timings
*timings
)
285 mutex_lock(&hdmi
.lock
);
287 hdmi
.cfg
.timings
= *timings
;
289 dispc_set_tv_pclk(timings
->pixelclock
);
291 mutex_unlock(&hdmi
.lock
);
294 static void hdmi_display_get_timings(struct omap_dss_device
*dssdev
,
295 struct omap_video_timings
*timings
)
297 *timings
= hdmi
.cfg
.timings
;
300 static void hdmi_dump_regs(struct seq_file
*s
)
302 mutex_lock(&hdmi
.lock
);
304 if (hdmi_runtime_get()) {
305 mutex_unlock(&hdmi
.lock
);
309 hdmi_wp_dump(&hdmi
.wp
, s
);
310 hdmi_pll_dump(&hdmi
.pll
, s
);
311 hdmi_phy_dump(&hdmi
.phy
, s
);
312 hdmi5_core_dump(&hdmi
.core
, s
);
315 mutex_unlock(&hdmi
.lock
);
318 static int read_edid(u8
*buf
, int len
)
323 mutex_lock(&hdmi
.lock
);
325 r
= hdmi_runtime_get();
328 idlemode
= REG_GET(hdmi
.wp
.base
, HDMI_WP_SYSCONFIG
, 3, 2);
330 REG_FLD_MOD(hdmi
.wp
.base
, HDMI_WP_SYSCONFIG
, 1, 3, 2);
332 r
= hdmi5_read_edid(&hdmi
.core
, buf
, len
);
334 REG_FLD_MOD(hdmi
.wp
.base
, HDMI_WP_SYSCONFIG
, idlemode
, 3, 2);
337 mutex_unlock(&hdmi
.lock
);
342 static void hdmi_start_audio_stream(struct omap_hdmi
*hd
)
344 REG_FLD_MOD(hdmi
.wp
.base
, HDMI_WP_SYSCONFIG
, 1, 3, 2);
345 hdmi_wp_audio_enable(&hd
->wp
, true);
346 hdmi_wp_audio_core_req_enable(&hd
->wp
, true);
349 static void hdmi_stop_audio_stream(struct omap_hdmi
*hd
)
351 hdmi_wp_audio_core_req_enable(&hd
->wp
, false);
352 hdmi_wp_audio_enable(&hd
->wp
, false);
353 REG_FLD_MOD(hd
->wp
.base
, HDMI_WP_SYSCONFIG
, hd
->wp_idlemode
, 3, 2);
356 static int hdmi_display_enable(struct omap_dss_device
*dssdev
)
358 struct omap_dss_device
*out
= &hdmi
.output
;
362 DSSDBG("ENTER hdmi_display_enable\n");
364 mutex_lock(&hdmi
.lock
);
366 if (!out
->dispc_channel_connected
) {
367 DSSERR("failed to enable display: no output/manager\n");
372 r
= hdmi_power_on_full(dssdev
);
374 DSSERR("failed to power on device\n");
378 if (hdmi
.audio_configured
) {
379 r
= hdmi5_audio_config(&hdmi
.core
, &hdmi
.wp
, &hdmi
.audio_config
,
380 hdmi
.cfg
.timings
.pixelclock
);
382 DSSERR("Error restoring audio configuration: %d", r
);
383 hdmi
.audio_abort_cb(&hdmi
.pdev
->dev
);
384 hdmi
.audio_configured
= false;
388 spin_lock_irqsave(&hdmi
.audio_playing_lock
, flags
);
389 if (hdmi
.audio_configured
&& hdmi
.audio_playing
)
390 hdmi_start_audio_stream(&hdmi
);
391 hdmi
.display_enabled
= true;
392 spin_unlock_irqrestore(&hdmi
.audio_playing_lock
, flags
);
394 mutex_unlock(&hdmi
.lock
);
398 mutex_unlock(&hdmi
.lock
);
402 static void hdmi_display_disable(struct omap_dss_device
*dssdev
)
406 DSSDBG("Enter hdmi_display_disable\n");
408 mutex_lock(&hdmi
.lock
);
410 spin_lock_irqsave(&hdmi
.audio_playing_lock
, flags
);
411 hdmi_stop_audio_stream(&hdmi
);
412 hdmi
.display_enabled
= false;
413 spin_unlock_irqrestore(&hdmi
.audio_playing_lock
, flags
);
415 hdmi_power_off_full(dssdev
);
417 mutex_unlock(&hdmi
.lock
);
420 static int hdmi_core_enable(struct omap_dss_device
*dssdev
)
424 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
426 mutex_lock(&hdmi
.lock
);
428 r
= hdmi_power_on_core(dssdev
);
430 DSSERR("failed to power on device\n");
434 mutex_unlock(&hdmi
.lock
);
438 mutex_unlock(&hdmi
.lock
);
442 static void hdmi_core_disable(struct omap_dss_device
*dssdev
)
444 DSSDBG("Enter omapdss_hdmi_core_disable\n");
446 mutex_lock(&hdmi
.lock
);
448 hdmi_power_off_core(dssdev
);
450 mutex_unlock(&hdmi
.lock
);
453 static int hdmi_connect(struct omap_dss_device
*dssdev
,
454 struct omap_dss_device
*dst
)
456 enum omap_channel channel
= dssdev
->dispc_channel
;
459 r
= hdmi_init_regulator();
463 r
= dss_mgr_connect(channel
, dssdev
);
467 r
= omapdss_output_set_device(dssdev
, dst
);
469 DSSERR("failed to connect output to new device: %s\n",
471 dss_mgr_disconnect(channel
, dssdev
);
478 static void hdmi_disconnect(struct omap_dss_device
*dssdev
,
479 struct omap_dss_device
*dst
)
481 enum omap_channel channel
= dssdev
->dispc_channel
;
483 WARN_ON(dst
!= dssdev
->dst
);
485 if (dst
!= dssdev
->dst
)
488 omapdss_output_unset_device(dssdev
);
490 dss_mgr_disconnect(channel
, dssdev
);
493 static int hdmi_read_edid(struct omap_dss_device
*dssdev
,
499 need_enable
= hdmi
.core_enabled
== false;
502 r
= hdmi_core_enable(dssdev
);
507 r
= read_edid(edid
, len
);
510 hdmi_core_disable(dssdev
);
515 static int hdmi_set_infoframe(struct omap_dss_device
*dssdev
,
516 const struct hdmi_avi_infoframe
*avi
)
518 hdmi
.cfg
.infoframe
= *avi
;
522 static int hdmi_set_hdmi_mode(struct omap_dss_device
*dssdev
,
525 hdmi
.cfg
.hdmi_dvi_mode
= hdmi_mode
? HDMI_HDMI
: HDMI_DVI
;
529 static const struct omapdss_hdmi_ops hdmi_ops
= {
530 .connect
= hdmi_connect
,
531 .disconnect
= hdmi_disconnect
,
533 .enable
= hdmi_display_enable
,
534 .disable
= hdmi_display_disable
,
536 .check_timings
= hdmi_display_check_timing
,
537 .set_timings
= hdmi_display_set_timing
,
538 .get_timings
= hdmi_display_get_timings
,
540 .read_edid
= hdmi_read_edid
,
541 .set_infoframe
= hdmi_set_infoframe
,
542 .set_hdmi_mode
= hdmi_set_hdmi_mode
,
545 static void hdmi_init_output(struct platform_device
*pdev
)
547 struct omap_dss_device
*out
= &hdmi
.output
;
549 out
->dev
= &pdev
->dev
;
550 out
->id
= OMAP_DSS_OUTPUT_HDMI
;
551 out
->output_type
= OMAP_DISPLAY_TYPE_HDMI
;
552 out
->name
= "hdmi.0";
553 out
->dispc_channel
= OMAP_DSS_CHANNEL_DIGIT
;
554 out
->ops
.hdmi
= &hdmi_ops
;
555 out
->owner
= THIS_MODULE
;
557 omapdss_register_output(out
);
560 static void hdmi_uninit_output(struct platform_device
*pdev
)
562 struct omap_dss_device
*out
= &hdmi
.output
;
564 omapdss_unregister_output(out
);
567 static int hdmi_probe_of(struct platform_device
*pdev
)
569 struct device_node
*node
= pdev
->dev
.of_node
;
570 struct device_node
*ep
;
573 ep
= omapdss_of_get_first_endpoint(node
);
577 r
= hdmi_parse_lanes_of(pdev
, ep
, &hdmi
.phy
);
589 /* Audio callbacks */
590 static int hdmi_audio_startup(struct device
*dev
,
591 void (*abort_cb
)(struct device
*dev
))
593 struct omap_hdmi
*hd
= dev_get_drvdata(dev
);
596 mutex_lock(&hd
->lock
);
598 if (!hdmi_mode_has_audio(&hd
->cfg
) || !hd
->display_enabled
) {
603 hd
->audio_abort_cb
= abort_cb
;
606 mutex_unlock(&hd
->lock
);
611 static int hdmi_audio_shutdown(struct device
*dev
)
613 struct omap_hdmi
*hd
= dev_get_drvdata(dev
);
615 mutex_lock(&hd
->lock
);
616 hd
->audio_abort_cb
= NULL
;
617 hd
->audio_configured
= false;
618 hd
->audio_playing
= false;
619 mutex_unlock(&hd
->lock
);
624 static int hdmi_audio_start(struct device
*dev
)
626 struct omap_hdmi
*hd
= dev_get_drvdata(dev
);
629 WARN_ON(!hdmi_mode_has_audio(&hd
->cfg
));
631 spin_lock_irqsave(&hd
->audio_playing_lock
, flags
);
633 if (hd
->display_enabled
)
634 hdmi_start_audio_stream(hd
);
635 hd
->audio_playing
= true;
637 spin_unlock_irqrestore(&hd
->audio_playing_lock
, flags
);
641 static void hdmi_audio_stop(struct device
*dev
)
643 struct omap_hdmi
*hd
= dev_get_drvdata(dev
);
646 WARN_ON(!hdmi_mode_has_audio(&hd
->cfg
));
648 spin_lock_irqsave(&hd
->audio_playing_lock
, flags
);
650 if (hd
->display_enabled
)
651 hdmi_stop_audio_stream(hd
);
652 hd
->audio_playing
= false;
654 spin_unlock_irqrestore(&hd
->audio_playing_lock
, flags
);
657 static int hdmi_audio_config(struct device
*dev
,
658 struct omap_dss_audio
*dss_audio
)
660 struct omap_hdmi
*hd
= dev_get_drvdata(dev
);
663 mutex_lock(&hd
->lock
);
665 if (!hdmi_mode_has_audio(&hd
->cfg
) || !hd
->display_enabled
) {
670 ret
= hdmi5_audio_config(&hd
->core
, &hd
->wp
, dss_audio
,
671 hd
->cfg
.timings
.pixelclock
);
674 hd
->audio_configured
= true;
675 hd
->audio_config
= *dss_audio
;
678 mutex_unlock(&hd
->lock
);
683 static const struct omap_hdmi_audio_ops hdmi_audio_ops
= {
684 .audio_startup
= hdmi_audio_startup
,
685 .audio_shutdown
= hdmi_audio_shutdown
,
686 .audio_start
= hdmi_audio_start
,
687 .audio_stop
= hdmi_audio_stop
,
688 .audio_config
= hdmi_audio_config
,
691 static int hdmi_audio_register(struct device
*dev
)
693 struct omap_hdmi_audio_pdata pdata
= {
695 .dss_version
= omapdss_get_version(),
696 .audio_dma_addr
= hdmi_wp_get_audio_dma_addr(&hdmi
.wp
),
697 .ops
= &hdmi_audio_ops
,
700 hdmi
.audio_pdev
= platform_device_register_data(
701 dev
, "omap-hdmi-audio", PLATFORM_DEVID_AUTO
,
702 &pdata
, sizeof(pdata
));
704 if (IS_ERR(hdmi
.audio_pdev
))
705 return PTR_ERR(hdmi
.audio_pdev
);
709 REG_GET(hdmi
.wp
.base
, HDMI_WP_SYSCONFIG
, 3, 2);
715 /* HDMI HW IP initialisation */
716 static int hdmi5_bind(struct device
*dev
, struct device
*master
, void *data
)
718 struct platform_device
*pdev
= to_platform_device(dev
);
723 dev_set_drvdata(&pdev
->dev
, &hdmi
);
725 mutex_init(&hdmi
.lock
);
726 spin_lock_init(&hdmi
.audio_playing_lock
);
728 if (pdev
->dev
.of_node
) {
729 r
= hdmi_probe_of(pdev
);
734 r
= hdmi_wp_init(pdev
, &hdmi
.wp
);
738 r
= hdmi_pll_init(pdev
, &hdmi
.pll
, &hdmi
.wp
);
742 r
= hdmi_phy_init(pdev
, &hdmi
.phy
);
746 r
= hdmi5_core_init(pdev
, &hdmi
.core
);
750 irq
= platform_get_irq(pdev
, 0);
752 DSSERR("platform_get_irq failed\n");
757 r
= devm_request_threaded_irq(&pdev
->dev
, irq
,
758 NULL
, hdmi_irq_handler
,
759 IRQF_ONESHOT
, "OMAP HDMI", &hdmi
.wp
);
761 DSSERR("HDMI IRQ request failed\n");
765 pm_runtime_enable(&pdev
->dev
);
767 hdmi_init_output(pdev
);
769 r
= hdmi_audio_register(&pdev
->dev
);
771 DSSERR("Registering HDMI audio failed %d\n", r
);
772 hdmi_uninit_output(pdev
);
773 pm_runtime_disable(&pdev
->dev
);
777 dss_debugfs_create_file("hdmi", hdmi_dump_regs
);
781 hdmi_pll_uninit(&hdmi
.pll
);
785 static void hdmi5_unbind(struct device
*dev
, struct device
*master
, void *data
)
787 struct platform_device
*pdev
= to_platform_device(dev
);
790 platform_device_unregister(hdmi
.audio_pdev
);
792 hdmi_uninit_output(pdev
);
794 hdmi_pll_uninit(&hdmi
.pll
);
796 pm_runtime_disable(&pdev
->dev
);
799 static const struct component_ops hdmi5_component_ops
= {
801 .unbind
= hdmi5_unbind
,
804 static int hdmi5_probe(struct platform_device
*pdev
)
806 return component_add(&pdev
->dev
, &hdmi5_component_ops
);
809 static int hdmi5_remove(struct platform_device
*pdev
)
811 component_del(&pdev
->dev
, &hdmi5_component_ops
);
815 static int hdmi_runtime_suspend(struct device
*dev
)
822 static int hdmi_runtime_resume(struct device
*dev
)
826 r
= dispc_runtime_get();
833 static const struct dev_pm_ops hdmi_pm_ops
= {
834 .runtime_suspend
= hdmi_runtime_suspend
,
835 .runtime_resume
= hdmi_runtime_resume
,
838 static const struct of_device_id hdmi_of_match
[] = {
839 { .compatible
= "ti,omap5-hdmi", },
840 { .compatible
= "ti,dra7-hdmi", },
844 static struct platform_driver omapdss_hdmihw_driver
= {
845 .probe
= hdmi5_probe
,
846 .remove
= hdmi5_remove
,
848 .name
= "omapdss_hdmi5",
850 .of_match_table
= hdmi_of_match
,
851 .suppress_bind_attrs
= true,
855 int __init
hdmi5_init_platform_driver(void)
857 return platform_driver_register(&omapdss_hdmihw_driver
);
860 void hdmi5_uninit_platform_driver(void)
862 platform_driver_unregister(&omapdss_hdmihw_driver
);