blob: f892ae157ff3b429fc1532da85daaf65871f5e08 [file] [log] [blame]
Mythri P Kc3198a52011-03-12 12:04:27 +05301/*
Archit Tanejaef269582013-09-12 17:45:57 +05302 * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
Mythri P Kc3198a52011-03-12 12:04:27 +05303 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
4 * Authors: Yong Zhi
5 * Mythri pk <mythripk@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#define DSS_SUBSYS_NAME "HDMI"
21
22#include <linux/kernel.h>
23#include <linux/module.h>
24#include <linux/err.h>
25#include <linux/io.h>
26#include <linux/interrupt.h>
27#include <linux/mutex.h>
28#include <linux/delay.h>
29#include <linux/string.h>
Tomi Valkeinen24e62892011-05-23 11:51:18 +030030#include <linux/platform_device.h>
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +030031#include <linux/pm_runtime.h>
32#include <linux/clk.h>
Tomi Valkeinencca35012012-04-26 14:48:32 +030033#include <linux/gpio.h>
Tomi Valkeinen17486942012-08-15 15:55:04 +030034#include <linux/regulator/consumer.h>
Tomi Valkeinen736e60d2015-06-04 15:22:23 +030035#include <linux/component.h>
Tomi Valkeinena0b38cc2011-05-11 14:05:07 +030036#include <video/omapdss.h>
Jyri Sarha4d594df2014-05-23 12:48:28 +030037#include <sound/omap-hdmi-audio.h>
Mythri P Kc3198a52011-03-12 12:04:27 +053038
Archit Tanejaef269582013-09-12 17:45:57 +053039#include "hdmi4_core.h"
Mythri P Kc3198a52011-03-12 12:04:27 +053040#include "dss.h"
Ricardo Neriad44cc32011-05-18 22:31:56 -050041#include "dss_features.h"
Jyri Sarha945514b2014-06-27 16:47:00 +030042#include "hdmi.h"
Mythri P Kc3198a52011-03-12 12:04:27 +053043
Jyri Sarha945514b2014-06-27 16:47:00 +030044static struct omap_hdmi hdmi;
Mythri P Kc3198a52011-03-12 12:04:27 +053045
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +030046static int hdmi_runtime_get(void)
47{
48 int r;
49
50 DSSDBG("hdmi_runtime_get\n");
51
52 r = pm_runtime_get_sync(&hdmi.pdev->dev);
53 WARN_ON(r < 0);
Archit Tanejaa247ce782012-02-10 11:45:52 +053054 if (r < 0)
Tomi Valkeinen852f0832012-02-17 17:58:04 +020055 return r;
Archit Tanejaa247ce782012-02-10 11:45:52 +053056
57 return 0;
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +030058}
59
60static void hdmi_runtime_put(void)
61{
62 int r;
63
64 DSSDBG("hdmi_runtime_put\n");
65
Tomi Valkeinen0eaf9f52012-01-23 13:23:08 +020066 r = pm_runtime_put_sync(&hdmi.pdev->dev);
Tomi Valkeinen5be3aeb2012-06-27 16:37:18 +030067 WARN_ON(r < 0 && r != -ENOSYS);
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +030068}
69
Tomi Valkeinendcf5f722013-10-28 11:47:34 +020070static irqreturn_t hdmi_irq_handler(int irq, void *data)
71{
72 struct hdmi_wp_data *wp = data;
73 u32 irqstatus;
74
75 irqstatus = hdmi_wp_get_irqstatus(wp);
76 hdmi_wp_set_irqstatus(wp, irqstatus);
77
78 if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
79 irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
80 /*
81 * If we get both connect and disconnect interrupts at the same
82 * time, turn off the PHY, clear interrupts, and restart, which
83 * raises connect interrupt if a cable is connected, or nothing
84 * if cable is not connected.
85 */
86 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
87
88 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
89 HDMI_IRQ_LINK_DISCONNECT);
90
91 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
92 } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
93 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
94 } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
95 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
96 }
97
98 return IRQ_HANDLED;
99}
100
Tomi Valkeinene25001d2013-05-10 15:20:52 +0300101static int hdmi_init_regulator(void)
102{
Tomi Valkeinen818a0532013-09-23 18:42:11 +0530103 int r;
Tomi Valkeinene25001d2013-05-10 15:20:52 +0300104 struct regulator *reg;
105
Jyri Sarha945514b2014-06-27 16:47:00 +0300106 if (hdmi.vdda_reg != NULL)
Tomi Valkeinene25001d2013-05-10 15:20:52 +0300107 return 0;
108
Tomi Valkeinen931d4bd2013-06-10 14:05:10 +0300109 reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
Tomi Valkeinene25001d2013-05-10 15:20:52 +0300110
111 if (IS_ERR(reg)) {
Tomi Valkeinen40359a92013-12-19 16:15:34 +0200112 if (PTR_ERR(reg) != -EPROBE_DEFER)
Tomi Valkeinen931d4bd2013-06-10 14:05:10 +0300113 DSSERR("can't get VDDA regulator\n");
Tomi Valkeinene25001d2013-05-10 15:20:52 +0300114 return PTR_ERR(reg);
115 }
116
Tomi Valkeinen818a0532013-09-23 18:42:11 +0530117 if (regulator_can_change_voltage(reg)) {
118 r = regulator_set_voltage(reg, 1800000, 1800000);
119 if (r) {
120 devm_regulator_put(reg);
121 DSSWARN("can't set the regulator voltage\n");
122 return r;
123 }
124 }
125
Jyri Sarha945514b2014-06-27 16:47:00 +0300126 hdmi.vdda_reg = reg;
Tomi Valkeinene25001d2013-05-10 15:20:52 +0300127
128 return 0;
129}
130
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300131static int hdmi_power_on_core(struct omap_dss_device *dssdev)
Mythri P Kc3198a52011-03-12 12:04:27 +0530132{
Mythri P K46095b22012-01-06 17:52:09 +0530133 int r;
Mythri P Kc3198a52011-03-12 12:04:27 +0530134
Jyri Sarha945514b2014-06-27 16:47:00 +0300135 r = regulator_enable(hdmi.vdda_reg);
Tomi Valkeinen17486942012-08-15 15:55:04 +0300136 if (r)
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300137 return r;
Tomi Valkeinen17486942012-08-15 15:55:04 +0300138
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300139 r = hdmi_runtime_get();
140 if (r)
Tomi Valkeinencca35012012-04-26 14:48:32 +0300141 goto err_runtime_get;
Mythri P Kc3198a52011-03-12 12:04:27 +0530142
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300143 /* Make selection of HDMI in DSS */
144 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
145
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300146 hdmi.core_enabled = true;
147
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300148 return 0;
149
150err_runtime_get:
Jyri Sarha945514b2014-06-27 16:47:00 +0300151 regulator_disable(hdmi.vdda_reg);
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300152
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300153 return r;
154}
155
156static void hdmi_power_off_core(struct omap_dss_device *dssdev)
157{
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300158 hdmi.core_enabled = false;
159
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300160 hdmi_runtime_put();
Jyri Sarha945514b2014-06-27 16:47:00 +0300161 regulator_disable(hdmi.vdda_reg);
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300162}
163
164static int hdmi_power_on_full(struct omap_dss_device *dssdev)
165{
166 int r;
167 struct omap_video_timings *p;
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200168 enum omap_channel channel = dssdev->dispc_channel;
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200169 struct hdmi_wp_data *wp = &hdmi.wp;
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300170 struct dss_pll_clock_info hdmi_cinfo = { 0 };
Tomi Valkeinen67d8ffd2016-01-13 18:41:33 +0200171 unsigned pc;
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300172
173 r = hdmi_power_on_core(dssdev);
174 if (r)
175 return r;
176
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200177 /* disable and clear irqs */
178 hdmi_wp_clear_irqenable(wp, 0xffffffff);
179 hdmi_wp_set_irqstatus(wp, 0xffffffff);
180
Archit Taneja275cfa12013-10-08 14:22:03 +0530181 p = &hdmi.cfg.timings;
Mythri P Kc3198a52011-03-12 12:04:27 +0530182
Archit Taneja78493982012-08-08 16:50:42 +0530183 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
Mythri P Kc3198a52011-03-12 12:04:27 +0530184
Tomi Valkeinen67d8ffd2016-01-13 18:41:33 +0200185 pc = p->pixelclock;
186 if (p->double_pixel)
187 pc *= 2;
188
189 hdmi_pll_compute(&hdmi.pll, pc, &hdmi_cinfo);
Mythri P Kc3198a52011-03-12 12:04:27 +0530190
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300191 r = dss_pll_enable(&hdmi.pll.pll);
Mythri P Kc3198a52011-03-12 12:04:27 +0530192 if (r) {
Tomi Valkeinenc2fbd062014-10-16 16:01:51 +0300193 DSSERR("Failed to enable PLL\n");
Tomi Valkeinencca35012012-04-26 14:48:32 +0300194 goto err_pll_enable;
Mythri P Kc3198a52011-03-12 12:04:27 +0530195 }
196
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300197 r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
Tomi Valkeinenc2fbd062014-10-16 16:01:51 +0300198 if (r) {
199 DSSERR("Failed to configure PLL\n");
200 goto err_pll_cfg;
201 }
202
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300203 r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
204 hdmi_cinfo.clkout[0]);
Mythri P Kc3198a52011-03-12 12:04:27 +0530205 if (r) {
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200206 DSSDBG("Failed to configure PHY\n");
207 goto err_phy_cfg;
Mythri P Kc3198a52011-03-12 12:04:27 +0530208 }
209
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200210 r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
211 if (r)
212 goto err_phy_pwr;
213
Archit Taneja275cfa12013-10-08 14:22:03 +0530214 hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
Mythri P Kc3198a52011-03-12 12:04:27 +0530215
Mythri P Kc3198a52011-03-12 12:04:27 +0530216 /* bypass TV gamma table */
217 dispc_enable_gamma_table(0);
218
219 /* tv size */
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200220 dss_mgr_set_timings(channel, p);
Mythri P Kc3198a52011-03-12 12:04:27 +0530221
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200222 r = dss_mgr_enable(channel);
Tomi Valkeinen33ca2372011-11-21 13:42:58 +0200223 if (r)
224 goto err_mgr_enable;
Tomi Valkeinen3870c902011-08-31 14:47:11 +0300225
Tomi Valkeinen4e4b53c2015-03-24 15:46:35 +0200226 r = hdmi_wp_video_start(&hdmi.wp);
227 if (r)
228 goto err_vid_enable;
229
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200230 hdmi_wp_set_irqenable(wp,
231 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
232
Mythri P Kc3198a52011-03-12 12:04:27 +0530233 return 0;
Tomi Valkeinen33ca2372011-11-21 13:42:58 +0200234
Ricardo Neric0456be2012-04-27 13:48:45 -0500235err_vid_enable:
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200236 dss_mgr_disable(channel);
Tomi Valkeinen4e4b53c2015-03-24 15:46:35 +0200237err_mgr_enable:
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200238 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
239err_phy_pwr:
Tomi Valkeinen9bba13f2015-03-24 15:46:33 +0200240err_phy_cfg:
Tomi Valkeinenc2fbd062014-10-16 16:01:51 +0300241err_pll_cfg:
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300242 dss_pll_disable(&hdmi.pll.pll);
Tomi Valkeinencca35012012-04-26 14:48:32 +0300243err_pll_enable:
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300244 hdmi_power_off_core(dssdev);
Mythri P Kc3198a52011-03-12 12:04:27 +0530245 return -EIO;
246}
247
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300248static void hdmi_power_off_full(struct omap_dss_device *dssdev)
Mythri P Kc3198a52011-03-12 12:04:27 +0530249{
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200250 enum omap_channel channel = dssdev->dispc_channel;
Archit Tanejacea87b92012-09-07 17:56:20 +0530251
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200252 hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
253
Archit Taneja275cfa12013-10-08 14:22:03 +0530254 hdmi_wp_video_stop(&hdmi.wp);
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200255
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200256 dss_mgr_disable(channel);
Tomi Valkeinen4e4b53c2015-03-24 15:46:35 +0200257
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200258 hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
259
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300260 dss_pll_disable(&hdmi.pll.pll);
Tomi Valkeinencca35012012-04-26 14:48:32 +0300261
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300262 hdmi_power_off_core(dssdev);
Mythri P Kc3198a52011-03-12 12:04:27 +0530263}
264
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300265static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
Mythri P Kc3198a52011-03-12 12:04:27 +0530266 struct omap_video_timings *timings)
267{
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200268 if (!dispc_mgr_timings_ok(dssdev->dispc_channel, timings))
Mythri P Kc3198a52011-03-12 12:04:27 +0530269 return -EINVAL;
Mythri P Kc3198a52011-03-12 12:04:27 +0530270
271 return 0;
Mythri P Kc3198a52011-03-12 12:04:27 +0530272}
273
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300274static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
Archit Taneja78493982012-08-08 16:50:42 +0530275 struct omap_video_timings *timings)
Mythri P Kc3198a52011-03-12 12:04:27 +0530276{
Archit Tanejaed1aa902012-08-15 00:40:31 +0530277 mutex_lock(&hdmi.lock);
278
Tomi Valkeinenab0aee92014-06-18 14:21:44 +0300279 hdmi.cfg.timings = *timings;
Archit Taneja78493982012-08-08 16:50:42 +0530280
Tomi Valkeinenab0aee92014-06-18 14:21:44 +0300281 dispc_set_tv_pclk(timings->pixelclock);
Archit Taneja1e676242013-12-09 19:39:08 +0530282
Archit Tanejaed1aa902012-08-15 00:40:31 +0530283 mutex_unlock(&hdmi.lock);
Mythri P Kc3198a52011-03-12 12:04:27 +0530284}
285
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300286static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300287 struct omap_video_timings *timings)
288{
Tomi Valkeinenab0aee92014-06-18 14:21:44 +0300289 *timings = hdmi.cfg.timings;
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300290}
291
Tomi Valkeinene40402c2012-03-02 18:01:07 +0200292static void hdmi_dump_regs(struct seq_file *s)
Mythri P K162874d2011-09-22 13:37:45 +0530293{
294 mutex_lock(&hdmi.lock);
295
Wei Yongjunf8fb7d72012-10-21 20:54:26 +0800296 if (hdmi_runtime_get()) {
297 mutex_unlock(&hdmi.lock);
Mythri P K162874d2011-09-22 13:37:45 +0530298 return;
Wei Yongjunf8fb7d72012-10-21 20:54:26 +0800299 }
Mythri P K162874d2011-09-22 13:37:45 +0530300
Archit Taneja275cfa12013-10-08 14:22:03 +0530301 hdmi_wp_dump(&hdmi.wp, s);
302 hdmi_pll_dump(&hdmi.pll, s);
303 hdmi_phy_dump(&hdmi.phy, s);
304 hdmi4_core_dump(&hdmi.core, s);
Mythri P K162874d2011-09-22 13:37:45 +0530305
306 hdmi_runtime_put();
307 mutex_unlock(&hdmi.lock);
308}
309
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300310static int read_edid(u8 *buf, int len)
Tomi Valkeinen47024562011-08-25 17:12:56 +0300311{
312 int r;
313
314 mutex_lock(&hdmi.lock);
315
316 r = hdmi_runtime_get();
317 BUG_ON(r);
318
Archit Taneja275cfa12013-10-08 14:22:03 +0530319 r = hdmi4_read_edid(&hdmi.core, buf, len);
Tomi Valkeinen47024562011-08-25 17:12:56 +0300320
321 hdmi_runtime_put();
322 mutex_unlock(&hdmi.lock);
323
324 return r;
325}
326
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300327static void hdmi_start_audio_stream(struct omap_hdmi *hd)
328{
329 hdmi_wp_audio_enable(&hd->wp, true);
330 hdmi4_audio_start(&hd->core, &hd->wp);
331}
332
333static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
334{
335 hdmi4_audio_stop(&hd->core, &hd->wp);
336 hdmi_wp_audio_enable(&hd->wp, false);
337}
338
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300339static int hdmi_display_enable(struct omap_dss_device *dssdev)
Mythri P Kc3198a52011-03-12 12:04:27 +0530340{
Tomi Valkeinen1f68d9c2013-04-19 15:09:34 +0300341 struct omap_dss_device *out = &hdmi.output;
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300342 unsigned long flags;
Mythri P Kc3198a52011-03-12 12:04:27 +0530343 int r = 0;
344
345 DSSDBG("ENTER hdmi_display_enable\n");
346
347 mutex_lock(&hdmi.lock);
348
Tomi Valkeinenf1504ad2015-11-05 09:34:51 +0200349 if (!out->dispc_channel_connected) {
Archit Tanejacea87b92012-09-07 17:56:20 +0530350 DSSERR("failed to enable display: no output/manager\n");
Tomi Valkeinen05e1d602011-06-23 16:38:21 +0300351 r = -ENODEV;
352 goto err0;
353 }
354
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300355 r = hdmi_power_on_full(dssdev);
Mythri P Kc3198a52011-03-12 12:04:27 +0530356 if (r) {
357 DSSERR("failed to power on device\n");
Tomi Valkeinend3923932013-04-25 13:12:07 +0300358 goto err0;
Mythri P Kc3198a52011-03-12 12:04:27 +0530359 }
360
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300361 if (hdmi.audio_configured) {
362 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
363 hdmi.cfg.timings.pixelclock);
364 if (r) {
365 DSSERR("Error restoring audio configuration: %d", r);
366 hdmi.audio_abort_cb(&hdmi.pdev->dev);
367 hdmi.audio_configured = false;
368 }
369 }
370
371 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
372 if (hdmi.audio_configured && hdmi.audio_playing)
373 hdmi_start_audio_stream(&hdmi);
Jyri Sarha4d594df2014-05-23 12:48:28 +0300374 hdmi.display_enabled = true;
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300375 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
Jyri Sarha4d594df2014-05-23 12:48:28 +0300376
Mythri P Kc3198a52011-03-12 12:04:27 +0530377 mutex_unlock(&hdmi.lock);
378 return 0;
379
Mythri P Kc3198a52011-03-12 12:04:27 +0530380err0:
381 mutex_unlock(&hdmi.lock);
382 return r;
383}
384
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300385static void hdmi_display_disable(struct omap_dss_device *dssdev)
Mythri P Kc3198a52011-03-12 12:04:27 +0530386{
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300387 unsigned long flags;
388
Mythri P Kc3198a52011-03-12 12:04:27 +0530389 DSSDBG("Enter hdmi_display_disable\n");
390
391 mutex_lock(&hdmi.lock);
392
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300393 spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
394 hdmi_stop_audio_stream(&hdmi);
395 hdmi.display_enabled = false;
396 spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
Jyri Sarha4d594df2014-05-23 12:48:28 +0300397
Tomi Valkeinenbb426fc92012-10-19 17:42:10 +0300398 hdmi_power_off_full(dssdev);
Mythri P Kc3198a52011-03-12 12:04:27 +0530399
Mythri P Kc3198a52011-03-12 12:04:27 +0530400 mutex_unlock(&hdmi.lock);
401}
402
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300403static int hdmi_core_enable(struct omap_dss_device *dssdev)
Tomi Valkeinen44898232012-10-19 17:42:27 +0300404{
405 int r = 0;
406
407 DSSDBG("ENTER omapdss_hdmi_core_enable\n");
408
409 mutex_lock(&hdmi.lock);
410
Tomi Valkeinen44898232012-10-19 17:42:27 +0300411 r = hdmi_power_on_core(dssdev);
412 if (r) {
413 DSSERR("failed to power on device\n");
414 goto err0;
415 }
416
417 mutex_unlock(&hdmi.lock);
418 return 0;
419
420err0:
421 mutex_unlock(&hdmi.lock);
422 return r;
423}
424
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300425static void hdmi_core_disable(struct omap_dss_device *dssdev)
Tomi Valkeinen44898232012-10-19 17:42:27 +0300426{
427 DSSDBG("Enter omapdss_hdmi_core_disable\n");
428
429 mutex_lock(&hdmi.lock);
430
431 hdmi_power_off_core(dssdev);
432
433 mutex_unlock(&hdmi.lock);
434}
435
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300436static int hdmi_connect(struct omap_dss_device *dssdev,
437 struct omap_dss_device *dst)
438{
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200439 enum omap_channel channel = dssdev->dispc_channel;
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300440 int r;
441
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300442 r = hdmi_init_regulator();
443 if (r)
444 return r;
445
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200446 r = dss_mgr_connect(channel, dssdev);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300447 if (r)
448 return r;
449
450 r = omapdss_output_set_device(dssdev, dst);
451 if (r) {
452 DSSERR("failed to connect output to new device: %s\n",
453 dst->name);
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200454 dss_mgr_disconnect(channel, dssdev);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300455 return r;
456 }
457
458 return 0;
459}
460
461static void hdmi_disconnect(struct omap_dss_device *dssdev,
462 struct omap_dss_device *dst)
463{
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200464 enum omap_channel channel = dssdev->dispc_channel;
465
Tomi Valkeinen9560dc102013-07-24 13:06:54 +0300466 WARN_ON(dst != dssdev->dst);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300467
Tomi Valkeinen9560dc102013-07-24 13:06:54 +0300468 if (dst != dssdev->dst)
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300469 return;
470
471 omapdss_output_unset_device(dssdev);
472
Tomi Valkeinen46e1ef32015-11-05 09:56:21 +0200473 dss_mgr_disconnect(channel, dssdev);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300474}
475
476static int hdmi_read_edid(struct omap_dss_device *dssdev,
477 u8 *edid, int len)
478{
479 bool need_enable;
480 int r;
481
482 need_enable = hdmi.core_enabled == false;
483
484 if (need_enable) {
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300485 r = hdmi_core_enable(dssdev);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300486 if (r)
487 return r;
488 }
489
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300490 r = read_edid(edid, len);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300491
492 if (need_enable)
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300493 hdmi_core_disable(dssdev);
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300494
495 return r;
496}
497
Tomi Valkeinenab0aee92014-06-18 14:21:44 +0300498static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
499 const struct hdmi_avi_infoframe *avi)
500{
501 hdmi.cfg.infoframe = *avi;
502 return 0;
503}
504
505static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
506 bool hdmi_mode)
507{
508 hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
509 return 0;
510}
511
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300512static const struct omapdss_hdmi_ops hdmi_ops = {
513 .connect = hdmi_connect,
514 .disconnect = hdmi_disconnect,
515
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300516 .enable = hdmi_display_enable,
517 .disable = hdmi_display_disable,
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300518
Tomi Valkeinen164ebdd2013-05-15 10:48:45 +0300519 .check_timings = hdmi_display_check_timing,
520 .set_timings = hdmi_display_set_timing,
521 .get_timings = hdmi_display_get_timings,
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300522
523 .read_edid = hdmi_read_edid,
Tomi Valkeinenab0aee92014-06-18 14:21:44 +0300524 .set_infoframe = hdmi_set_infoframe,
525 .set_hdmi_mode = hdmi_set_hdmi_mode,
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300526};
527
Tomi Valkeinen17ae4e82013-04-26 14:48:43 +0300528static void hdmi_init_output(struct platform_device *pdev)
Archit Taneja81b87f52012-09-26 16:30:49 +0530529{
Tomi Valkeinen1f68d9c2013-04-19 15:09:34 +0300530 struct omap_dss_device *out = &hdmi.output;
Archit Taneja81b87f52012-09-26 16:30:49 +0530531
Tomi Valkeinen1f68d9c2013-04-19 15:09:34 +0300532 out->dev = &pdev->dev;
Archit Taneja81b87f52012-09-26 16:30:49 +0530533 out->id = OMAP_DSS_OUTPUT_HDMI;
Tomi Valkeinen1f68d9c2013-04-19 15:09:34 +0300534 out->output_type = OMAP_DISPLAY_TYPE_HDMI;
Tomi Valkeinen7286a082013-02-18 13:06:01 +0200535 out->name = "hdmi.0";
Tomi Valkeinen2eea5ae2013-02-13 11:23:54 +0200536 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
Tomi Valkeinen0b450c32013-05-24 13:20:17 +0300537 out->ops.hdmi = &hdmi_ops;
Tomi Valkeinenb7328e12013-05-03 11:42:18 +0300538 out->owner = THIS_MODULE;
Archit Taneja81b87f52012-09-26 16:30:49 +0530539
Tomi Valkeinen5d47dbc2013-04-24 13:32:51 +0300540 omapdss_register_output(out);
Archit Taneja81b87f52012-09-26 16:30:49 +0530541}
542
Jyri Sarha39c1b7b2014-12-02 14:12:56 +0200543static void hdmi_uninit_output(struct platform_device *pdev)
Archit Taneja81b87f52012-09-26 16:30:49 +0530544{
Tomi Valkeinen1f68d9c2013-04-19 15:09:34 +0300545 struct omap_dss_device *out = &hdmi.output;
Archit Taneja81b87f52012-09-26 16:30:49 +0530546
Tomi Valkeinen5d47dbc2013-04-24 13:32:51 +0300547 omapdss_unregister_output(out);
Archit Taneja81b87f52012-09-26 16:30:49 +0530548}
549
Tomi Valkeinen2f5dc672014-04-17 12:54:02 +0300550static int hdmi_probe_of(struct platform_device *pdev)
551{
552 struct device_node *node = pdev->dev.of_node;
553 struct device_node *ep;
554 int r;
555
556 ep = omapdss_of_get_first_endpoint(node);
557 if (!ep)
558 return 0;
559
560 r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
561 if (r)
562 goto err;
563
564 of_node_put(ep);
565 return 0;
566
567err:
568 of_node_put(ep);
569 return r;
570}
571
Jyri Sarha4d594df2014-05-23 12:48:28 +0300572/* Audio callbacks */
573static int hdmi_audio_startup(struct device *dev,
574 void (*abort_cb)(struct device *dev))
575{
576 struct omap_hdmi *hd = dev_get_drvdata(dev);
577 int ret = 0;
578
579 mutex_lock(&hd->lock);
580
581 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
582 ret = -EPERM;
583 goto out;
584 }
585
586 hd->audio_abort_cb = abort_cb;
587
588out:
589 mutex_unlock(&hd->lock);
590
591 return ret;
592}
593
594static int hdmi_audio_shutdown(struct device *dev)
595{
596 struct omap_hdmi *hd = dev_get_drvdata(dev);
597
598 mutex_lock(&hd->lock);
599 hd->audio_abort_cb = NULL;
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300600 hd->audio_configured = false;
601 hd->audio_playing = false;
Jyri Sarha4d594df2014-05-23 12:48:28 +0300602 mutex_unlock(&hd->lock);
603
604 return 0;
605}
606
607static int hdmi_audio_start(struct device *dev)
608{
609 struct omap_hdmi *hd = dev_get_drvdata(dev);
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300610 unsigned long flags;
Jyri Sarha4d594df2014-05-23 12:48:28 +0300611
612 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
Jyri Sarha4d594df2014-05-23 12:48:28 +0300613
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300614 spin_lock_irqsave(&hd->audio_playing_lock, flags);
Jyri Sarha4d594df2014-05-23 12:48:28 +0300615
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300616 if (hd->display_enabled)
617 hdmi_start_audio_stream(hd);
618 hd->audio_playing = true;
619
620 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
Jyri Sarha4d594df2014-05-23 12:48:28 +0300621 return 0;
622}
623
624static void hdmi_audio_stop(struct device *dev)
625{
626 struct omap_hdmi *hd = dev_get_drvdata(dev);
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300627 unsigned long flags;
Jyri Sarha4d594df2014-05-23 12:48:28 +0300628
629 WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
Jyri Sarha4d594df2014-05-23 12:48:28 +0300630
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300631 spin_lock_irqsave(&hd->audio_playing_lock, flags);
632
633 if (hd->display_enabled)
634 hdmi_stop_audio_stream(hd);
635 hd->audio_playing = false;
636
637 spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
Jyri Sarha4d594df2014-05-23 12:48:28 +0300638}
639
640static int hdmi_audio_config(struct device *dev,
641 struct omap_dss_audio *dss_audio)
642{
643 struct omap_hdmi *hd = dev_get_drvdata(dev);
644 int ret;
645
646 mutex_lock(&hd->lock);
647
648 if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
649 ret = -EPERM;
650 goto out;
651 }
652
653 ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
654 hd->cfg.timings.pixelclock);
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300655 if (!ret) {
656 hd->audio_configured = true;
657 hd->audio_config = *dss_audio;
658 }
Jyri Sarha4d594df2014-05-23 12:48:28 +0300659out:
660 mutex_unlock(&hd->lock);
661
662 return ret;
663}
664
665static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
666 .audio_startup = hdmi_audio_startup,
667 .audio_shutdown = hdmi_audio_shutdown,
668 .audio_start = hdmi_audio_start,
669 .audio_stop = hdmi_audio_stop,
670 .audio_config = hdmi_audio_config,
671};
672
673static int hdmi_audio_register(struct device *dev)
674{
675 struct omap_hdmi_audio_pdata pdata = {
676 .dev = dev,
677 .dss_version = omapdss_get_version(),
678 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
679 .ops = &hdmi_audio_ops,
680 };
681
682 hdmi.audio_pdev = platform_device_register_data(
683 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
684 &pdata, sizeof(pdata));
685
686 if (IS_ERR(hdmi.audio_pdev))
687 return PTR_ERR(hdmi.audio_pdev);
688
689 return 0;
690}
691
Mythri P Kc3198a52011-03-12 12:04:27 +0530692/* HDMI HW IP initialisation */
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300693static int hdmi4_bind(struct device *dev, struct device *master, void *data)
Mythri P Kc3198a52011-03-12 12:04:27 +0530694{
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300695 struct platform_device *pdev = to_platform_device(dev);
Tomi Valkeinen38f3daf2012-05-02 14:55:12 +0300696 int r;
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200697 int irq;
Mythri P Kc3198a52011-03-12 12:04:27 +0530698
Mythri P Kc3198a52011-03-12 12:04:27 +0530699 hdmi.pdev = pdev;
Jyri Sarha945514b2014-06-27 16:47:00 +0300700 dev_set_drvdata(&pdev->dev, &hdmi);
Mythri P Kc3198a52011-03-12 12:04:27 +0530701
702 mutex_init(&hdmi.lock);
Jyri Sarha8a9d46262015-08-28 17:21:46 +0300703 spin_lock_init(&hdmi.audio_playing_lock);
Mythri P Kc3198a52011-03-12 12:04:27 +0530704
Tomi Valkeinen2f5dc672014-04-17 12:54:02 +0300705 if (pdev->dev.of_node) {
706 r = hdmi_probe_of(pdev);
707 if (r)
708 return r;
709 }
710
Archit Taneja275cfa12013-10-08 14:22:03 +0530711 r = hdmi_wp_init(pdev, &hdmi.wp);
Archit Tanejaf382d9e2013-08-06 14:56:55 +0530712 if (r)
713 return r;
Mythri P Kc3198a52011-03-12 12:04:27 +0530714
Tomi Valkeinen03aafa22014-10-16 15:31:38 +0300715 r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
Archit Tanejac1577c12013-10-08 12:55:26 +0530716 if (r)
717 return r;
718
Archit Taneja275cfa12013-10-08 14:22:03 +0530719 r = hdmi_phy_init(pdev, &hdmi.phy);
Archit Taneja5cac5ae2013-10-08 13:07:00 +0530720 if (r)
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300721 goto err;
Tomi Valkeinenddb1d5c2013-06-06 13:08:35 +0300722
Archit Taneja275cfa12013-10-08 14:22:03 +0530723 r = hdmi4_core_init(pdev, &hdmi.core);
Archit Taneja425f02f2013-10-08 14:16:05 +0530724 if (r)
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300725 goto err;
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300726
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200727 irq = platform_get_irq(pdev, 0);
728 if (irq < 0) {
729 DSSERR("platform_get_irq failed\n");
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300730 r = -ENODEV;
731 goto err;
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200732 }
733
734 r = devm_request_threaded_irq(&pdev->dev, irq,
735 NULL, hdmi_irq_handler,
736 IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
737 if (r) {
738 DSSERR("HDMI IRQ request failed\n");
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300739 goto err;
Tomi Valkeinendcf5f722013-10-28 11:47:34 +0200740 }
741
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300742 pm_runtime_enable(&pdev->dev);
743
Tomi Valkeinen002d3682013-02-13 12:17:43 +0200744 hdmi_init_output(pdev);
745
Jyri Sarha4d594df2014-05-23 12:48:28 +0300746 r = hdmi_audio_register(&pdev->dev);
747 if (r) {
748 DSSERR("Registering HDMI audio failed\n");
749 hdmi_uninit_output(pdev);
750 pm_runtime_disable(&pdev->dev);
751 return r;
752 }
753
Tomi Valkeinene40402c2012-03-02 18:01:07 +0200754 dss_debugfs_create_file("hdmi", hdmi_dump_regs);
755
Tomi Valkeinencca35012012-04-26 14:48:32 +0300756 return 0;
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300757err:
758 hdmi_pll_uninit(&hdmi.pll);
759 return r;
Tomi Valkeinencca35012012-04-26 14:48:32 +0300760}
761
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300762static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
Mythri P Kc3198a52011-03-12 12:04:27 +0530763{
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300764 struct platform_device *pdev = to_platform_device(dev);
765
Jyri Sarha4d594df2014-05-23 12:48:28 +0300766 if (hdmi.audio_pdev)
767 platform_device_unregister(hdmi.audio_pdev);
768
Archit Taneja81b87f52012-09-26 16:30:49 +0530769 hdmi_uninit_output(pdev);
770
Tomi Valkeinenc84c3a52014-10-22 15:02:17 +0300771 hdmi_pll_uninit(&hdmi.pll);
772
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300773 pm_runtime_disable(&pdev->dev);
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300774}
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300775
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300776static const struct component_ops hdmi4_component_ops = {
777 .bind = hdmi4_bind,
778 .unbind = hdmi4_unbind,
779};
780
781static int hdmi4_probe(struct platform_device *pdev)
782{
783 return component_add(&pdev->dev, &hdmi4_component_ops);
784}
785
786static int hdmi4_remove(struct platform_device *pdev)
787{
788 component_del(&pdev->dev, &hdmi4_component_ops);
Mythri P Kc3198a52011-03-12 12:04:27 +0530789 return 0;
790}
791
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300792static int hdmi_runtime_suspend(struct device *dev)
793{
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300794 dispc_runtime_put();
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300795
796 return 0;
797}
798
799static int hdmi_runtime_resume(struct device *dev)
800{
801 int r;
802
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300803 r = dispc_runtime_get();
804 if (r < 0)
Tomi Valkeinen852f0832012-02-17 17:58:04 +0200805 return r;
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300806
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300807 return 0;
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300808}
809
810static const struct dev_pm_ops hdmi_pm_ops = {
811 .runtime_suspend = hdmi_runtime_suspend,
812 .runtime_resume = hdmi_runtime_resume,
813};
814
Tomi Valkeinen04656162013-12-16 15:14:04 +0200815static const struct of_device_id hdmi_of_match[] = {
816 { .compatible = "ti,omap4-hdmi", },
817 {},
818};
819
Mythri P Kc3198a52011-03-12 12:04:27 +0530820static struct platform_driver omapdss_hdmihw_driver = {
Tomi Valkeinen736e60d2015-06-04 15:22:23 +0300821 .probe = hdmi4_probe,
822 .remove = hdmi4_remove,
Mythri P Kc3198a52011-03-12 12:04:27 +0530823 .driver = {
824 .name = "omapdss_hdmi",
Tomi Valkeinen4fbafaf2011-05-27 10:52:19 +0300825 .pm = &hdmi_pm_ops,
Tomi Valkeinen04656162013-12-16 15:14:04 +0200826 .of_match_table = hdmi_of_match,
Tomi Valkeinen422ccbd2014-10-16 09:54:25 +0300827 .suppress_bind_attrs = true,
Mythri P Kc3198a52011-03-12 12:04:27 +0530828 },
829};
830
Archit Tanejaef269582013-09-12 17:45:57 +0530831int __init hdmi4_init_platform_driver(void)
Mythri P Kc3198a52011-03-12 12:04:27 +0530832{
Tomi Valkeinen17ae4e82013-04-26 14:48:43 +0300833 return platform_driver_register(&omapdss_hdmihw_driver);
Mythri P Kc3198a52011-03-12 12:04:27 +0530834}
835
Tomi Valkeinenede92692015-06-04 14:12:16 +0300836void hdmi4_uninit_platform_driver(void)
Mythri P Kc3198a52011-03-12 12:04:27 +0530837{
Tomi Valkeinen04c742c2012-02-23 15:32:37 +0200838 platform_driver_unregister(&omapdss_hdmihw_driver);
Mythri P Kc3198a52011-03-12 12:04:27 +0530839}