/* * HDMI driver for OMAP5 * * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ * * Authors: * Yong Zhi * Mythri pk * Archit Taneja * Tomi Valkeinen * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see . */ #define DSS_SUBSYS_NAME "HDMI" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "omapdss.h" #include "hdmi5_core.h" #include "dss.h" static int hdmi_runtime_get(struct omap_hdmi *hdmi) { int r; DSSDBG("hdmi_runtime_get\n"); r = pm_runtime_get_sync(&hdmi->pdev->dev); WARN_ON(r < 0); if (r < 0) return r; return 0; } static void hdmi_runtime_put(struct omap_hdmi *hdmi) { int r; DSSDBG("hdmi_runtime_put\n"); r = pm_runtime_put_sync(&hdmi->pdev->dev); WARN_ON(r < 0 && r != -ENOSYS); } static irqreturn_t hdmi_irq_handler(int irq, void *data) { struct omap_hdmi *hdmi = data; struct hdmi_wp_data *wp = &hdmi->wp; u32 irqstatus; irqstatus = hdmi_wp_get_irqstatus(wp); hdmi_wp_set_irqstatus(wp, irqstatus); if ((irqstatus & HDMI_IRQ_LINK_CONNECT) && irqstatus & HDMI_IRQ_LINK_DISCONNECT) { u32 v; /* * If we get both connect and disconnect interrupts at the same * time, turn off the PHY, clear interrupts, and restart, which * raises connect interrupt if a cable is connected, or nothing * if cable is not connected. */ hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); /* * We always get bogus CONNECT & DISCONNECT interrupts when * setting the PHY to LDOON. To ignore those, we force the RXDET * line to 0 until the PHY power state has been changed. */ v = hdmi_read_reg(hdmi->phy.base, HDMI_TXPHY_PAD_CFG_CTRL); v = FLD_MOD(v, 1, 15, 15); /* FORCE_RXDET_HIGH */ v = FLD_MOD(v, 0, 14, 7); /* RXDET_LINE */ hdmi_write_reg(hdmi->phy.base, HDMI_TXPHY_PAD_CFG_CTRL, v); hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); REG_FLD_MOD(hdmi->phy.base, HDMI_TXPHY_PAD_CFG_CTRL, 0, 15, 15); } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) { hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON); } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) { hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); } return IRQ_HANDLED; } static int hdmi_power_on_core(struct omap_hdmi *hdmi) { int r; r = regulator_enable(hdmi->vdda_reg); if (r) return r; r = hdmi_runtime_get(hdmi); if (r) goto err_runtime_get; /* Make selection of HDMI in DSS */ dss_select_hdmi_venc_clk_source(hdmi->dss, DSS_HDMI_M_PCLK); hdmi->core_enabled = true; return 0; err_runtime_get: regulator_disable(hdmi->vdda_reg); return r; } static void hdmi_power_off_core(struct omap_hdmi *hdmi) { hdmi->core_enabled = false; hdmi_runtime_put(hdmi); regulator_disable(hdmi->vdda_reg); } static int hdmi_power_on_full(struct omap_hdmi *hdmi) { int r; const struct videomode *vm; struct dss_pll_clock_info hdmi_cinfo = { 0 }; unsigned int pc; r = hdmi_power_on_core(hdmi); if (r) return r; vm = &hdmi->cfg.vm; DSSDBG("hdmi_power_on hactive= %d vactive = %d\n", vm->hactive, vm->vactive); pc = vm->pixelclock; if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) pc *= 2; /* DSS_HDMI_TCLK is bitclk / 10 */ pc *= 10; dss_pll_calc_b(&hdmi->pll.pll, clk_get_rate(hdmi->pll.pll.clkin), pc, &hdmi_cinfo); /* disable and clear irqs */ hdmi_wp_clear_irqenable(&hdmi->wp, 0xffffffff); hdmi_wp_set_irqstatus(&hdmi->wp, hdmi_wp_get_irqstatus(&hdmi->wp)); r = dss_pll_enable(&hdmi->pll.pll); if (r) { DSSERR("Failed to enable PLL\n"); goto err_pll_enable; } r = dss_pll_set_config(&hdmi->pll.pll, &hdmi_cinfo); if (r) { DSSERR("Failed to configure PLL\n"); goto err_pll_cfg; } r = hdmi_phy_configure(&hdmi->phy, hdmi_cinfo.clkdco, hdmi_cinfo.clkout[0]); if (r) { DSSDBG("Failed to start PHY\n"); goto err_phy_cfg; } r = hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_LDOON); if (r) goto err_phy_pwr; hdmi5_configure(&hdmi->core, &hdmi->wp, &hdmi->cfg); r = dss_mgr_enable(&hdmi->output); if (r) goto err_mgr_enable; r = hdmi_wp_video_start(&hdmi->wp); if (r) goto err_vid_enable; hdmi_wp_set_irqenable(&hdmi->wp, HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); return 0; err_vid_enable: dss_mgr_disable(&hdmi->output); err_mgr_enable: hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF); err_phy_pwr: err_phy_cfg: err_pll_cfg: dss_pll_disable(&hdmi->pll.pll); err_pll_enable: hdmi_power_off_core(hdmi); return -EIO; } static void hdmi_power_off_full(struct omap_hdmi *hdmi) { hdmi_wp_clear_irqenable(&hdmi->wp, 0xffffffff); hdmi_wp_video_stop(&hdmi->wp); dss_mgr_disable(&hdmi->output); hdmi_wp_set_phy_pwr(&hdmi->wp, HDMI_PHYPWRCMD_OFF); dss_pll_disable(&hdmi->pll.pll); hdmi_power_off_core(hdmi); } static void hdmi_display_set_timings(struct omap_dss_device *dssdev, const struct drm_display_mode *mode) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); mutex_lock(&hdmi->lock); drm_display_mode_to_videomode(mode, &hdmi->cfg.vm); dispc_set_tv_pclk(hdmi->dss->dispc, mode->clock * 1000); mutex_unlock(&hdmi->lock); } static int hdmi_dump_regs(struct seq_file *s, void *p) { struct omap_hdmi *hdmi = s->private; mutex_lock(&hdmi->lock); if (hdmi_runtime_get(hdmi)) { mutex_unlock(&hdmi->lock); return 0; } hdmi_wp_dump(&hdmi->wp, s); hdmi_pll_dump(&hdmi->pll, s); hdmi_phy_dump(&hdmi->phy, s); hdmi5_core_dump(&hdmi->core, s); hdmi_runtime_put(hdmi); mutex_unlock(&hdmi->lock); return 0; } static int read_edid(struct omap_hdmi *hdmi, u8 *buf, int len) { int r; int idlemode; mutex_lock(&hdmi->lock); r = hdmi_runtime_get(hdmi); BUG_ON(r); idlemode = REG_GET(hdmi->wp.base, HDMI_WP_SYSCONFIG, 3, 2); /* No-idle mode */ REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2); r = hdmi5_read_edid(&hdmi->core, buf, len); REG_FLD_MOD(hdmi->wp.base, HDMI_WP_SYSCONFIG, idlemode, 3, 2); hdmi_runtime_put(hdmi); mutex_unlock(&hdmi->lock); return r; } static void hdmi_start_audio_stream(struct omap_hdmi *hd) { REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, 1, 3, 2); hdmi_wp_audio_enable(&hd->wp, true); hdmi_wp_audio_core_req_enable(&hd->wp, true); } static void hdmi_stop_audio_stream(struct omap_hdmi *hd) { hdmi_wp_audio_core_req_enable(&hd->wp, false); hdmi_wp_audio_enable(&hd->wp, false); REG_FLD_MOD(hd->wp.base, HDMI_WP_SYSCONFIG, hd->wp_idlemode, 3, 2); } static void hdmi_display_enable(struct omap_dss_device *dssdev) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); unsigned long flags; int r; DSSDBG("ENTER hdmi_display_enable\n"); mutex_lock(&hdmi->lock); r = hdmi_power_on_full(hdmi); if (r) { DSSERR("failed to power on device\n"); goto done; } if (hdmi->audio_configured) { r = hdmi5_audio_config(&hdmi->core, &hdmi->wp, &hdmi->audio_config, hdmi->cfg.vm.pixelclock); if (r) { DSSERR("Error restoring audio configuration: %d", r); hdmi->audio_abort_cb(&hdmi->pdev->dev); hdmi->audio_configured = false; } } spin_lock_irqsave(&hdmi->audio_playing_lock, flags); if (hdmi->audio_configured && hdmi->audio_playing) hdmi_start_audio_stream(hdmi); hdmi->display_enabled = true; spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); done: mutex_unlock(&hdmi->lock); } static void hdmi_display_disable(struct omap_dss_device *dssdev) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); unsigned long flags; DSSDBG("Enter hdmi_display_disable\n"); mutex_lock(&hdmi->lock); spin_lock_irqsave(&hdmi->audio_playing_lock, flags); hdmi_stop_audio_stream(hdmi); hdmi->display_enabled = false; spin_unlock_irqrestore(&hdmi->audio_playing_lock, flags); hdmi_power_off_full(hdmi); mutex_unlock(&hdmi->lock); } static int hdmi_core_enable(struct omap_hdmi *hdmi) { int r = 0; DSSDBG("ENTER omapdss_hdmi_core_enable\n"); mutex_lock(&hdmi->lock); r = hdmi_power_on_core(hdmi); if (r) { DSSERR("failed to power on device\n"); goto err0; } mutex_unlock(&hdmi->lock); return 0; err0: mutex_unlock(&hdmi->lock); return r; } static void hdmi_core_disable(struct omap_hdmi *hdmi) { DSSDBG("Enter omapdss_hdmi_core_disable\n"); mutex_lock(&hdmi->lock); hdmi_power_off_core(hdmi); mutex_unlock(&hdmi->lock); } static int hdmi_connect(struct omap_dss_device *src, struct omap_dss_device *dst) { return omapdss_device_connect(dst->dss, dst, dst->next); } static void hdmi_disconnect(struct omap_dss_device *src, struct omap_dss_device *dst) { omapdss_device_disconnect(dst, dst->next); } static int hdmi_read_edid(struct omap_dss_device *dssdev, u8 *edid, int len) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); bool need_enable; int r; need_enable = hdmi->core_enabled == false; if (need_enable) { r = hdmi_core_enable(hdmi); if (r) return r; } r = read_edid(hdmi, edid, len); if (need_enable) hdmi_core_disable(hdmi); return r; } static int hdmi_set_infoframe(struct omap_dss_device *dssdev, const struct hdmi_avi_infoframe *avi) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); hdmi->cfg.infoframe = *avi; return 0; } static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev, bool hdmi_mode) { struct omap_hdmi *hdmi = dssdev_to_hdmi(dssdev); hdmi->cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI; return 0; } static const struct omap_dss_device_ops hdmi_ops = { .connect = hdmi_connect, .disconnect = hdmi_disconnect, .enable = hdmi_display_enable, .disable = hdmi_display_disable, .set_timings = hdmi_display_set_timings, .read_edid = hdmi_read_edid, .hdmi = { .set_infoframe = hdmi_set_infoframe, .set_hdmi_mode = hdmi_set_hdmi_mode, }, }; /* ----------------------------------------------------------------------------- * Audio Callbacks */ static int hdmi_audio_startup(struct device *dev, void (*abort_cb)(struct device *dev)) { struct omap_hdmi *hd = dev_get_drvdata(dev); mutex_lock(&hd->lock); WARN_ON(hd->audio_abort_cb != NULL); hd->audio_abort_cb = abort_cb; mutex_unlock(&hd->lock); return 0; } static int hdmi_audio_shutdown(struct device *dev) { struct omap_hdmi *hd = dev_get_drvdata(dev); mutex_lock(&hd->lock); hd->audio_abort_cb = NULL; hd->audio_configured = false; hd->audio_playing = false; mutex_unlock(&hd->lock); return 0; } static int hdmi_audio_start(struct device *dev) { struct omap_hdmi *hd = dev_get_drvdata(dev); unsigned long flags; spin_lock_irqsave(&hd->audio_playing_lock, flags); if (hd->display_enabled) { if (!hdmi_mode_has_audio(&hd->cfg)) DSSERR("%s: Video mode does not support audio\n", __func__); hdmi_start_audio_stream(hd); } hd->audio_playing = true; spin_unlock_irqrestore(&hd->audio_playing_lock, flags); return 0; } static void hdmi_audio_stop(struct device *dev) { struct omap_hdmi *hd = dev_get_drvdata(dev); unsigned long flags; if (!hdmi_mode_has_audio(&hd->cfg)) DSSERR("%s: Video mode does not support audio\n", __func__); spin_lock_irqsave(&hd->audio_playing_lock, flags); if (hd->display_enabled) hdmi_stop_audio_stream(hd); hd->audio_playing = false; spin_unlock_irqrestore(&hd->audio_playing_lock, flags); } static int hdmi_audio_config(struct device *dev, struct omap_dss_audio *dss_audio) { struct omap_hdmi *hd = dev_get_drvdata(dev); int ret = 0; mutex_lock(&hd->lock); if (hd->display_enabled) { ret = hdmi5_audio_config(&hd->core, &hd->wp, dss_audio, hd->cfg.vm.pixelclock); if (ret) goto out; } hd->audio_configured = true; hd->audio_config = *dss_audio; out: mutex_unlock(&hd->lock); return ret; } static const struct omap_hdmi_audio_ops hdmi_audio_ops = { .audio_startup = hdmi_audio_startup, .audio_shutdown = hdmi_audio_shutdown, .audio_start = hdmi_audio_start, .audio_stop = hdmi_audio_stop, .audio_config = hdmi_audio_config, }; static int hdmi_audio_register(struct omap_hdmi *hdmi) { struct omap_hdmi_audio_pdata pdata = { .dev = &hdmi->pdev->dev, .version = 5, .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi->wp), .ops = &hdmi_audio_ops, }; hdmi->audio_pdev = platform_device_register_data( &hdmi->pdev->dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO, &pdata, sizeof(pdata)); if (IS_ERR(hdmi->audio_pdev)) return PTR_ERR(hdmi->audio_pdev); hdmi_runtime_get(hdmi); hdmi->wp_idlemode = REG_GET(hdmi->wp.base, HDMI_WP_SYSCONFIG, 3, 2); hdmi_runtime_put(hdmi); return 0; } /* ----------------------------------------------------------------------------- * Component Bind & Unbind */ static int hdmi5_bind(struct device *dev, struct device *master, void *data) { struct dss_device *dss = dss_get_device(master); struct omap_hdmi *hdmi = dev_get_drvdata(dev); int r; hdmi->dss = dss; r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp); if (r) return r; r = hdmi_audio_register(hdmi); if (r) { DSSERR("Registering HDMI audio failed %d\n", r); goto err_pll_uninit; } hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs, hdmi); return 0; err_pll_uninit: hdmi_pll_uninit(&hdmi->pll); return r; } static void hdmi5_unbind(struct device *dev, struct device *master, void *data) { struct omap_hdmi *hdmi = dev_get_drvdata(dev); dss_debugfs_remove_file(hdmi->debugfs); if (hdmi->audio_pdev) platform_device_unregister(hdmi->audio_pdev); hdmi_pll_uninit(&hdmi->pll); } static const struct component_ops hdmi5_component_ops = { .bind = hdmi5_bind, .unbind = hdmi5_unbind, }; /* ----------------------------------------------------------------------------- * Probe & Remove, Suspend & Resume */ static int hdmi5_init_output(struct omap_hdmi *hdmi) { struct omap_dss_device *out = &hdmi->output; int r; out->dev = &hdmi->pdev->dev; out->id = OMAP_DSS_OUTPUT_HDMI; out->type = OMAP_DISPLAY_TYPE_HDMI; out->name = "hdmi.0"; out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; out->ops = &hdmi_ops; out->owner = THIS_MODULE; out->of_ports = BIT(0); out->ops_flags = OMAP_DSS_DEVICE_OP_EDID; r = omapdss_device_init_output(out); if (r < 0) return r; omapdss_device_register(out); return 0; } static void hdmi5_uninit_output(struct omap_hdmi *hdmi) { struct omap_dss_device *out = &hdmi->output; omapdss_device_unregister(out); omapdss_device_cleanup_output(out); } static int hdmi5_probe_of(struct omap_hdmi *hdmi) { struct platform_device *pdev = hdmi->pdev; struct device_node *node = pdev->dev.of_node; struct device_node *ep; int r; ep = of_graph_get_endpoint_by_regs(node, 0, 0); if (!ep) return 0; r = hdmi_parse_lanes_of(pdev, ep, &hdmi->phy); of_node_put(ep); return r; } static int hdmi5_probe(struct platform_device *pdev) { struct omap_hdmi *hdmi; int irq; int r; hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL); if (!hdmi) return -ENOMEM; hdmi->pdev = pdev; dev_set_drvdata(&pdev->dev, hdmi); mutex_init(&hdmi->lock); spin_lock_init(&hdmi->audio_playing_lock); r = hdmi5_probe_of(hdmi); if (r) goto err_free; r = hdmi_wp_init(pdev, &hdmi->wp, 5); if (r) goto err_free; r = hdmi_phy_init(pdev, &hdmi->phy, 5); if (r) goto err_free; r = hdmi5_core_init(pdev, &hdmi->core); if (r) goto err_free; irq = platform_get_irq(pdev, 0); if (irq < 0) { DSSERR("platform_get_irq failed\n"); r = -ENODEV; goto err_free; } r = devm_request_threaded_irq(&pdev->dev, irq, NULL, hdmi_irq_handler, IRQF_ONESHOT, "OMAP HDMI", hdmi); if (r) { DSSERR("HDMI IRQ request failed\n"); goto err_free; } hdmi->vdda_reg = devm_regulator_get(&pdev->dev, "vdda"); if (IS_ERR(hdmi->vdda_reg)) { r = PTR_ERR(hdmi->vdda_reg); if (r != -EPROBE_DEFER) DSSERR("can't get VDDA regulator\n"); goto err_free; } pm_runtime_enable(&pdev->dev); r = hdmi5_init_output(hdmi); if (r) goto err_pm_disable; r = component_add(&pdev->dev, &hdmi5_component_ops); if (r) goto err_uninit_output; return 0; err_uninit_output: hdmi5_uninit_output(hdmi); err_pm_disable: pm_runtime_disable(&pdev->dev); err_free: kfree(hdmi); return r; } static int hdmi5_remove(struct platform_device *pdev) { struct omap_hdmi *hdmi = platform_get_drvdata(pdev); component_del(&pdev->dev, &hdmi5_component_ops); hdmi5_uninit_output(hdmi); pm_runtime_disable(&pdev->dev); kfree(hdmi); return 0; } static const struct of_device_id hdmi_of_match[] = { { .compatible = "ti,omap5-hdmi", }, { .compatible = "ti,dra7-hdmi", }, {}, }; struct platform_driver omapdss_hdmi5hw_driver = { .probe = hdmi5_probe, .remove = hdmi5_remove, .driver = { .name = "omapdss_hdmi5", .of_match_table = hdmi_of_match, .suppress_bind_attrs = true, }, };