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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
0004  *
0005  * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
0006  * Authors: Yong Zhi
0007  *  Mythri pk <mythripk@ti.com>
0008  */
0009 
0010 #define DSS_SUBSYS_NAME "HDMI"
0011 
0012 #include <linux/kernel.h>
0013 #include <linux/module.h>
0014 #include <linux/err.h>
0015 #include <linux/io.h>
0016 #include <linux/interrupt.h>
0017 #include <linux/mutex.h>
0018 #include <linux/delay.h>
0019 #include <linux/string.h>
0020 #include <linux/platform_device.h>
0021 #include <linux/pm_runtime.h>
0022 #include <linux/clk.h>
0023 #include <linux/regulator/consumer.h>
0024 #include <linux/component.h>
0025 #include <linux/of.h>
0026 #include <linux/of_graph.h>
0027 #include <sound/omap-hdmi-audio.h>
0028 #include <media/cec.h>
0029 
0030 #include <drm/drm_atomic.h>
0031 #include <drm/drm_atomic_state_helper.h>
0032 #include <drm/drm_edid.h>
0033 
0034 #include "omapdss.h"
0035 #include "hdmi4_core.h"
0036 #include "hdmi4_cec.h"
0037 #include "dss.h"
0038 #include "hdmi.h"
0039 
0040 static int hdmi_runtime_get(struct omap_hdmi *hdmi)
0041 {
0042     int r;
0043 
0044     DSSDBG("hdmi_runtime_get\n");
0045 
0046     r = pm_runtime_get_sync(&hdmi->pdev->dev);
0047     if (WARN_ON(r < 0)) {
0048         pm_runtime_put_noidle(&hdmi->pdev->dev);
0049         return r;
0050     }
0051     return 0;
0052 }
0053 
0054 static void hdmi_runtime_put(struct omap_hdmi *hdmi)
0055 {
0056     int r;
0057 
0058     DSSDBG("hdmi_runtime_put\n");
0059 
0060     r = pm_runtime_put_sync(&hdmi->pdev->dev);
0061     WARN_ON(r < 0 && r != -ENOSYS);
0062 }
0063 
0064 static irqreturn_t hdmi_irq_handler(int irq, void *data)
0065 {
0066     struct omap_hdmi *hdmi = data;
0067     struct hdmi_wp_data *wp = &hdmi->wp;
0068     u32 irqstatus;
0069 
0070     irqstatus = hdmi_wp_get_irqstatus(wp);
0071     hdmi_wp_set_irqstatus(wp, irqstatus);
0072 
0073     if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
0074             irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
0075         /*
0076          * If we get both connect and disconnect interrupts at the same
0077          * time, turn off the PHY, clear interrupts, and restart, which
0078          * raises connect interrupt if a cable is connected, or nothing
0079          * if cable is not connected.
0080          */
0081         hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
0082 
0083         hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
0084                 HDMI_IRQ_LINK_DISCONNECT);
0085 
0086         hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
0087     } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
0088         hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
0089     } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
0090         hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
0091     }
0092     if (irqstatus & HDMI_IRQ_CORE) {
0093         u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
0094 
0095         hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
0096         if (intr4 & 8)
0097             hdmi4_cec_irq(&hdmi->core);
0098     }
0099 
0100     return IRQ_HANDLED;
0101 }
0102 
0103 static int hdmi_power_on_core(struct omap_hdmi *hdmi)
0104 {
0105     int r;
0106 
0107     if (hdmi->core.core_pwr_cnt++)
0108         return 0;
0109 
0110     r = regulator_enable(hdmi->vdda_reg);
0111     if (r)
0112         goto err_reg_enable;
0113 
0114     r = hdmi_runtime_get(hdmi);
0115     if (r)
0116         goto err_runtime_get;
0117 
0118     hdmi4_core_powerdown_disable(&hdmi->core);
0119 
0120     /* Make selection of HDMI in DSS */
0121     dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK);
0122 
0123     hdmi->core_enabled = true;
0124 
0125     return 0;
0126 
0127 err_runtime_get:
0128     regulator_disable(hdmi->vdda_reg);
0129 err_reg_enable:
0130     hdmi->core.core_pwr_cnt--;
0131 
0132     return r;
0133 }
0134 
0135 static void hdmi_power_off_core(struct omap_hdmi *hdmi)
0136 {
0137     if (--hdmi->core.core_pwr_cnt)
0138         return;
0139 
0140     hdmi->core_enabled = false;
0141 
0142     hdmi_runtime_put(hdmi);
0143     regulator_disable(hdmi->vdda_reg);
0144 }
0145 
0146 static int hdmi_power_on_full(struct omap_hdmi *hdmi)
0147 {
0148     int r;
0149     const struct videomode *vm;
0150     struct hdmi_wp_data *wp = &hdmi->wp;
0151     struct dss_pll_clock_info hdmi_cinfo = { 0 };
0152     unsigned int pc;
0153 
0154     r = hdmi_power_on_core(hdmi);
0155     if (r)
0156         return r;
0157 
0158     /* disable and clear irqs */
0159     hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
0160     hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);
0161 
0162     vm = &hdmi->cfg.vm;
0163 
0164     DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive,
0165            vm->vactive);
0166 
0167     pc = vm->pixelclock;
0168     if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
0169         pc *= 2;
0170 
0171     /* DSS_HDMI_TCLK is bitclk / 10 */
0172     pc *= 10;
0173 
0174     dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin),
0175         pc, &hdmi_cinfo);
0176 
0177     r = dss_pll_enable(&hdmi->pll.pll);
0178     if (r) {
0179         DSSERR("Failed to enable PLL\n");
0180         goto err_pll_enable;
0181     }
0182 
0183     r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo);
0184     if (r) {
0185         DSSERR("Failed to configure PLL\n");
0186         goto err_pll_cfg;
0187     }
0188 
0189     r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco,
0190         hdmi_cinfo.clkout[0]);
0191     if (r) {
0192         DSSDBG("Failed to configure PHY\n");
0193         goto err_phy_cfg;
0194     }
0195 
0196     r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
0197     if (r)
0198         goto err_phy_pwr;
0199 
0200     hdmi4_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg);
0201 
0202     r = dss_mgr_enable(&hdmi->output);
0203     if (r)
0204         goto err_mgr_enable;
0205 
0206     r = hdmi_wp_video_start(&hdmi->wp);
0207     if (r)
0208         goto err_vid_enable;
0209 
0210     hdmi_wp_set_irqenable(wp,
0211         HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
0212 
0213     return 0;
0214 
0215 err_vid_enable:
0216     dss_mgr_disable(&hdmi->output);
0217 err_mgr_enable:
0218     hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
0219 err_phy_pwr:
0220 err_phy_cfg:
0221 err_pll_cfg:
0222     dss_pll_disable(&hdmi->pll.pll);
0223 err_pll_enable:
0224     hdmi_power_off_core(hdmi);
0225     return -EIO;
0226 }
0227 
0228 static void hdmi_power_off_full(struct omap_hdmi *hdmi)
0229 {
0230     hdmi_wp_clear_irqenable(&hdmi->wp, ~HDMI_IRQ_CORE);
0231 
0232     hdmi_wp_video_stop(&hdmi->wp);
0233 
0234     dss_mgr_disable(&hdmi->output);
0235 
0236     hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF);
0237 
0238     dss_pll_disable(&hdmi->pll.pll);
0239 
0240     hdmi_power_off_core(hdmi);
0241 }
0242 
0243 static int hdmi_dump_regs(struct seq_file *s, void *p)
0244 {
0245     struct omap_hdmi *hdmi = s->private;
0246 
0247     mutex_lock(&hdmi->lock);
0248 
0249     if (hdmi_runtime_get(hdmi)) {
0250         mutex_unlock(&hdmi->lock);
0251         return 0;
0252     }
0253 
0254     hdmi_wp_dump(&hdmi->wp, s);
0255     hdmi_pll_dump(&hdmi->pll, s);
0256     hdmi_phy_dump(&hdmi->phy, s);
0257     hdmi4_core_dump(&hdmi->core, s);
0258 
0259     hdmi_runtime_put(hdmi);
0260     mutex_unlock(&hdmi->lock);
0261     return 0;
0262 }
0263 
0264 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
0265 {
0266     hdmi_wp_audio_enable(&hd->wp, true);
0267     hdmi4_audio_start(&hd->core, &hd->wp);
0268 }
0269 
0270 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
0271 {
0272     hdmi4_audio_stop(&hd->core, &hd->wp);
0273     hdmi_wp_audio_enable(&hd->wp, false);
0274 }
0275 
0276 int hdmi4_core_enable(struct hdmi_core_data *core)
0277 {
0278     struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
0279     int r = 0;
0280 
0281     DSSDBG("ENTER omapdss_hdmi4_core_enable\n");
0282 
0283     mutex_lock(&hdmi->lock);
0284 
0285     r = hdmi_power_on_core(hdmi);
0286     if (r) {
0287         DSSERR("failed to power on device\n");
0288         goto err0;
0289     }
0290 
0291     mutex_unlock(&hdmi->lock);
0292     return 0;
0293 
0294 err0:
0295     mutex_unlock(&hdmi->lock);
0296     return r;
0297 }
0298 
0299 void hdmi4_core_disable(struct hdmi_core_data *core)
0300 {
0301     struct omap_hdmi *hdmi = container_of(core, struct omap_hdmi, core);
0302 
0303     DSSDBG("Enter omapdss_hdmi4_core_disable\n");
0304 
0305     mutex_lock(&hdmi->lock);
0306 
0307     hdmi_power_off_core(hdmi);
0308 
0309     mutex_unlock(&hdmi->lock);
0310 }
0311 
0312 /* -----------------------------------------------------------------------------
0313  * DRM Bridge Operations
0314  */
0315 
0316 static int hdmi4_bridge_attach(struct drm_bridge *bridge,
0317                    enum drm_bridge_attach_flags flags)
0318 {
0319     struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
0320 
0321     if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
0322         return -EINVAL;
0323 
0324     return drm_bridge_attach(bridge->encoder, hdmi->output.next_bridge,
0325                  bridge, flags);
0326 }
0327 
0328 static void hdmi4_bridge_mode_set(struct drm_bridge *bridge,
0329                   const struct drm_display_mode *mode,
0330                   const struct drm_display_mode *adjusted_mode)
0331 {
0332     struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
0333 
0334     mutex_lock(&hdmi->lock);
0335 
0336     drm_display_mode_to_videomode(adjusted_mode, &hdmi->cfg.vm);
0337 
0338     dispc_set_tv_pclk(hdmi->dss->dispc, adjusted_mode->clock * 1000);
0339 
0340     mutex_unlock(&hdmi->lock);
0341 }
0342 
0343 static void hdmi4_bridge_enable(struct drm_bridge *bridge,
0344                 struct drm_bridge_state *bridge_state)
0345 {
0346     struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
0347     struct drm_atomic_state *state = bridge_state->base.state;
0348     struct drm_connector_state *conn_state;
0349     struct drm_connector *connector;
0350     struct drm_crtc_state *crtc_state;
0351     unsigned long flags;
0352     int ret;
0353 
0354     /*
0355      * None of these should fail, as the bridge can't be enabled without a
0356      * valid CRTC to connector path with fully populated new states.
0357      */
0358     connector = drm_atomic_get_new_connector_for_encoder(state,
0359                                  bridge->encoder);
0360     if (WARN_ON(!connector))
0361         return;
0362     conn_state = drm_atomic_get_new_connector_state(state, connector);
0363     if (WARN_ON(!conn_state))
0364         return;
0365     crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
0366     if (WARN_ON(!crtc_state))
0367         return;
0368 
0369     hdmi->cfg.hdmi_dvi_mode = connector->display_info.is_hdmi
0370                 ? HDMI_HDMI : HDMI_DVI;
0371 
0372     if (connector->display_info.is_hdmi) {
0373         const struct drm_display_mode *mode;
0374         struct hdmi_avi_infoframe avi;
0375 
0376         mode = &crtc_state->adjusted_mode;
0377         ret = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector,
0378                                    mode);
0379         if (ret == 0)
0380             hdmi->cfg.infoframe = avi;
0381     }
0382 
0383     mutex_lock(&hdmi->lock);
0384 
0385     ret = hdmi_power_on_full(hdmi);
0386     if (ret) {
0387         DSSERR("failed to power on device\n");
0388         goto done;
0389     }
0390 
0391     if (hdmi->audio_configured) {
0392         ret = hdmi4_audio_config(&hdmi->core, &hdmi->wp,
0393                      &hdmi->audio_config,
0394                      hdmi->cfg.vm.pixelclock);
0395         if (ret) {
0396             DSSERR("Error restoring audio configuration: %d", ret);
0397             hdmi->audio_abort_cb(&hdmi->pdev->dev);
0398             hdmi->audio_configured = false;
0399         }
0400     }
0401 
0402     spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
0403     if (hdmi->audio_configured && hdmi->audio_playing)
0404         hdmi_start_audio_stream(hdmi);
0405     hdmi->display_enabled = true;
0406     spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
0407 
0408 done:
0409     mutex_unlock(&hdmi->lock);
0410 }
0411 
0412 static void hdmi4_bridge_disable(struct drm_bridge *bridge,
0413                  struct drm_bridge_state *bridge_state)
0414 {
0415     struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
0416     unsigned long flags;
0417 
0418     mutex_lock(&hdmi->lock);
0419 
0420     spin_lock_irqsave(&hdmi->audio_playing_lock, flags);
0421     hdmi_stop_audio_stream(hdmi);
0422     hdmi->display_enabled = false;
0423     spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags);
0424 
0425     hdmi_power_off_full(hdmi);
0426 
0427     mutex_unlock(&hdmi->lock);
0428 }
0429 
0430 static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge,
0431                     enum drm_connector_status status)
0432 {
0433     struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
0434 
0435     if (status == connector_status_disconnected)
0436         hdmi4_cec_set_phys_addr(&hdmi->core, CEC_PHYS_ADDR_INVALID);
0437 }
0438 
0439 static struct edid *hdmi4_bridge_get_edid(struct drm_bridge *bridge,
0440                       struct drm_connector *connector)
0441 {
0442     struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
0443     struct edid *edid = NULL;
0444     unsigned int cec_addr;
0445     bool need_enable;
0446     int r;
0447 
0448     need_enable = hdmi->core_enabled == false;
0449 
0450     if (need_enable) {
0451         r = hdmi4_core_enable(&hdmi->core);
0452         if (r)
0453             return NULL;
0454     }
0455 
0456     mutex_lock(&hdmi->lock);
0457     r = hdmi_runtime_get(hdmi);
0458     BUG_ON(r);
0459 
0460     r = hdmi4_core_ddc_init(&hdmi->core);
0461     if (r)
0462         goto done;
0463 
0464     edid = drm_do_get_edid(connector, hdmi4_core_ddc_read, &hdmi->core);
0465 
0466 done:
0467     hdmi_runtime_put(hdmi);
0468     mutex_unlock(&hdmi->lock);
0469 
0470     if (edid && edid->extensions) {
0471         unsigned int len = (edid->extensions + 1) * EDID_LENGTH;
0472 
0473         cec_addr = cec_get_edid_phys_addr((u8 *)edid, len, NULL);
0474     } else {
0475         cec_addr = CEC_PHYS_ADDR_INVALID;
0476     }
0477 
0478     hdmi4_cec_set_phys_addr(&hdmi->core, cec_addr);
0479 
0480     if (need_enable)
0481         hdmi4_core_disable(&hdmi->core);
0482 
0483     return edid;
0484 }
0485 
0486 static const struct drm_bridge_funcs hdmi4_bridge_funcs = {
0487     .attach = hdmi4_bridge_attach,
0488     .mode_set = hdmi4_bridge_mode_set,
0489     .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
0490     .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
0491     .atomic_reset = drm_atomic_helper_bridge_reset,
0492     .atomic_enable = hdmi4_bridge_enable,
0493     .atomic_disable = hdmi4_bridge_disable,
0494     .hpd_notify = hdmi4_bridge_hpd_notify,
0495     .get_edid = hdmi4_bridge_get_edid,
0496 };
0497 
0498 static void hdmi4_bridge_init(struct omap_hdmi *hdmi)
0499 {
0500     hdmi->bridge.funcs = &hdmi4_bridge_funcs;
0501     hdmi->bridge.of_node = hdmi->pdev->dev.of_node;
0502     hdmi->bridge.ops = DRM_BRIDGE_OP_EDID;
0503     hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
0504 
0505     drm_bridge_add(&hdmi->bridge);
0506 }
0507 
0508 static void hdmi4_bridge_cleanup(struct omap_hdmi *hdmi)
0509 {
0510     drm_bridge_remove(&hdmi->bridge);
0511 }
0512 
0513 /* -----------------------------------------------------------------------------
0514  * Audio Callbacks
0515  */
0516 
0517 static int hdmi_audio_startup(struct device *dev,
0518                   void (*abort_cb)(struct device *dev))
0519 {
0520     struct omap_hdmi *hd = dev_get_drvdata(dev);
0521 
0522     mutex_lock(&hd->lock);
0523 
0524     WARN_ON(hd->audio_abort_cb != NULL);
0525 
0526     hd->audio_abort_cb = abort_cb;
0527 
0528     mutex_unlock(&hd->lock);
0529 
0530     return 0;
0531 }
0532 
0533 static int hdmi_audio_shutdown(struct device *dev)
0534 {
0535     struct omap_hdmi *hd = dev_get_drvdata(dev);
0536 
0537     mutex_lock(&hd->lock);
0538     hd->audio_abort_cb = NULL;
0539     hd->audio_configured = false;
0540     hd->audio_playing = false;
0541     mutex_unlock(&hd->lock);
0542 
0543     return 0;
0544 }
0545 
0546 static int hdmi_audio_start(struct device *dev)
0547 {
0548     struct omap_hdmi *hd = dev_get_drvdata(dev);
0549     unsigned long flags;
0550 
0551     spin_lock_irqsave(&hd->audio_playing_lock, flags);
0552 
0553     if (hd->display_enabled) {
0554         if (!hdmi_mode_has_audio(&hd->cfg))
0555             DSSERR("%s: Video mode does not support audio\n",
0556                    __func__);
0557         hdmi_start_audio_stream(hd);
0558     }
0559     hd->audio_playing = true;
0560 
0561     spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
0562     return 0;
0563 }
0564 
0565 static void hdmi_audio_stop(struct device *dev)
0566 {
0567     struct omap_hdmi *hd = dev_get_drvdata(dev);
0568     unsigned long flags;
0569 
0570     WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
0571 
0572     spin_lock_irqsave(&hd->audio_playing_lock, flags);
0573 
0574     if (hd->display_enabled)
0575         hdmi_stop_audio_stream(hd);
0576     hd->audio_playing = false;
0577 
0578     spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
0579 }
0580 
0581 static int hdmi_audio_config(struct device *dev,
0582                  struct omap_dss_audio *dss_audio)
0583 {
0584     struct omap_hdmi *hd = dev_get_drvdata(dev);
0585     int ret = 0;
0586 
0587     mutex_lock(&hd->lock);
0588 
0589     if (hd->display_enabled) {
0590         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
0591                      hd->cfg.vm.pixelclock);
0592         if (ret)
0593             goto out;
0594     }
0595 
0596     hd->audio_configured = true;
0597     hd->audio_config = *dss_audio;
0598 out:
0599     mutex_unlock(&hd->lock);
0600 
0601     return ret;
0602 }
0603 
0604 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
0605     .audio_startup = hdmi_audio_startup,
0606     .audio_shutdown = hdmi_audio_shutdown,
0607     .audio_start = hdmi_audio_start,
0608     .audio_stop = hdmi_audio_stop,
0609     .audio_config = hdmi_audio_config,
0610 };
0611 
0612 static int hdmi_audio_register(struct omap_hdmi *hdmi)
0613 {
0614     struct omap_hdmi_audio_pdata pdata = {
0615         .dev = &hdmi->pdev->dev,
0616         .version = 4,
0617         .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp),
0618         .ops = &hdmi_audio_ops,
0619     };
0620 
0621     hdmi->audio_pdev = platform_device_register_data(
0622         &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
0623         &pdata, sizeof(pdata));
0624 
0625     if (IS_ERR(hdmi->audio_pdev))
0626         return PTR_ERR(hdmi->audio_pdev);
0627 
0628     return 0;
0629 }
0630 
0631 /* -----------------------------------------------------------------------------
0632  * Component Bind & Unbind
0633  */
0634 
0635 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
0636 {
0637     struct dss_device *dss = dss_get_device(master);
0638     struct omap_hdmi *hdmi = dev_get_drvdata(dev);
0639     int r;
0640 
0641     hdmi->dss = dss;
0642 
0643     r = hdmi_runtime_get(hdmi);
0644     if (r)
0645         return r;
0646 
0647     r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
0648     if (r)
0649         goto err_runtime_put;
0650 
0651     r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
0652     if (r)
0653         goto err_pll_uninit;
0654 
0655     r = hdmi_audio_register(hdmi);
0656     if (r) {
0657         DSSERR("Registering HDMI audio failed\n");
0658         goto err_cec_uninit;
0659     }
0660 
0661     hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
0662                            hdmi);
0663 
0664     hdmi_runtime_put(hdmi);
0665 
0666     return 0;
0667 
0668 err_cec_uninit:
0669     hdmi4_cec_uninit(&hdmi->core);
0670 err_pll_uninit:
0671     hdmi_pll_uninit(&hdmi->pll);
0672 err_runtime_put:
0673     hdmi_runtime_put(hdmi);
0674     return r;
0675 }
0676 
0677 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
0678 {
0679     struct omap_hdmi *hdmi = dev_get_drvdata(dev);
0680 
0681     dss_debugfs_remove_file(hdmi->debugfs);
0682 
0683     if (hdmi->audio_pdev)
0684         platform_device_unregister(hdmi->audio_pdev);
0685 
0686     hdmi4_cec_uninit(&hdmi->core);
0687     hdmi_pll_uninit(&hdmi->pll);
0688 }
0689 
0690 static const struct component_ops hdmi4_component_ops = {
0691     .bind   = hdmi4_bind,
0692     .unbind = hdmi4_unbind,
0693 };
0694 
0695 /* -----------------------------------------------------------------------------
0696  * Probe & Remove, Suspend & Resume
0697  */
0698 
0699 static int hdmi4_init_output(struct omap_hdmi *hdmi)
0700 {
0701     struct omap_dss_device *out = &hdmi->output;
0702     int r;
0703 
0704     hdmi4_bridge_init(hdmi);
0705 
0706     out->dev = &hdmi->pdev->dev;
0707     out->id = OMAP_DSS_OUTPUT_HDMI;
0708     out->type = OMAP_DISPLAY_TYPE_HDMI;
0709     out->name = "hdmi.0";
0710     out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
0711     out->of_port = 0;
0712 
0713     r = omapdss_device_init_output(out, &hdmi->bridge);
0714     if (r < 0) {
0715         hdmi4_bridge_cleanup(hdmi);
0716         return r;
0717     }
0718 
0719     omapdss_device_register(out);
0720 
0721     return 0;
0722 }
0723 
0724 static void hdmi4_uninit_output(struct omap_hdmi *hdmi)
0725 {
0726     struct omap_dss_device *out = &hdmi->output;
0727 
0728     omapdss_device_unregister(out);
0729     omapdss_device_cleanup_output(out);
0730 
0731     hdmi4_bridge_cleanup(hdmi);
0732 }
0733 
0734 static int hdmi4_probe_of(struct omap_hdmi *hdmi)
0735 {
0736     struct platform_device *pdev = hdmi->pdev;
0737     struct device_node *node = pdev->dev.of_node;
0738     struct device_node *ep;
0739     int r;
0740 
0741     ep = of_graph_get_endpoint_by_regs(node, 0, 0);
0742     if (!ep)
0743         return 0;
0744 
0745     r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy);
0746     of_node_put(ep);
0747     return r;
0748 }
0749 
0750 static int hdmi4_probe(struct platform_device *pdev)
0751 {
0752     struct omap_hdmi *hdmi;
0753     int irq;
0754     int r;
0755 
0756     hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
0757     if (!hdmi)
0758         return -ENOMEM;
0759 
0760     hdmi->pdev = pdev;
0761 
0762     dev_set_drvdata(&pdev->dev, hdmi);
0763 
0764     mutex_init(&hdmi->lock);
0765     spin_lock_init(&hdmi->audio_playing_lock);
0766 
0767     r = hdmi4_probe_of(hdmi);
0768     if (r)
0769         goto err_free;
0770 
0771     r = hdmi_wp_init(pdev, &hdmi->wp, 4);
0772     if (r)
0773         goto err_free;
0774 
0775     r = hdmi_phy_init(pdev, &hdmi->phy, 4);
0776     if (r)
0777         goto err_free;
0778 
0779     r = hdmi4_core_init(pdev, &hdmi->core);
0780     if (r)
0781         goto err_free;
0782 
0783     irq = platform_get_irq(pdev, 0);
0784     if (irq < 0) {
0785         DSSERR("platform_get_irq failed\n");
0786         r = -ENODEV;
0787         goto err_free;
0788     }
0789 
0790     r = devm_request_threaded_irq(&pdev->dev, irq,
0791             NULL, hdmi_irq_handler,
0792             IRQF_ONESHOT, "OMAP HDMI", hdmi);
0793     if (r) {
0794         DSSERR("HDMI IRQ request failed\n");
0795         goto err_free;
0796     }
0797 
0798     hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda");
0799     if (IS_ERR(hdmi->vdda_reg)) {
0800         r = PTR_ERR(hdmi->vdda_reg);
0801         if (r != -EPROBE_DEFER)
0802             DSSERR("can't get VDDA regulator\n");
0803         goto err_free;
0804     }
0805 
0806     pm_runtime_enable(&pdev->dev);
0807 
0808     r = hdmi4_init_output(hdmi);
0809     if (r)
0810         goto err_pm_disable;
0811 
0812     r = component_add(&pdev->dev, &hdmi4_component_ops);
0813     if (r)
0814         goto err_uninit_output;
0815 
0816     return 0;
0817 
0818 err_uninit_output:
0819     hdmi4_uninit_output(hdmi);
0820 err_pm_disable:
0821     pm_runtime_disable(&pdev->dev);
0822 err_free:
0823     kfree(hdmi);
0824     return r;
0825 }
0826 
0827 static int hdmi4_remove(struct platform_device *pdev)
0828 {
0829     struct omap_hdmi *hdmi = platform_get_drvdata(pdev);
0830 
0831     component_del(&pdev->dev, &hdmi4_component_ops);
0832 
0833     hdmi4_uninit_output(hdmi);
0834 
0835     pm_runtime_disable(&pdev->dev);
0836 
0837     kfree(hdmi);
0838     return 0;
0839 }
0840 
0841 static const struct of_device_id hdmi_of_match[] = {
0842     { .compatible = "ti,omap4-hdmi", },
0843     {},
0844 };
0845 
0846 struct platform_driver omapdss_hdmi4hw_driver = {
0847     .probe      = hdmi4_probe,
0848     .remove     = hdmi4_remove,
0849     .driver         = {
0850         .name   = "omapdss_hdmi",
0851         .of_match_table = hdmi_of_match,
0852         .suppress_bind_attrs = true,
0853     },
0854 };
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