/* * Copyright (c) 2014 The Linux Foundation. All rights reserved. * Copyright (C) 2013 Red Hat * Author: Rob Clark * * 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 . */ #include #include #include #include "hdmi.h" void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on) { uint32_t ctrl = 0; unsigned long flags; spin_lock_irqsave(&hdmi->reg_lock, flags); if (power_on) { ctrl |= HDMI_CTRL_ENABLE; if (!hdmi->hdmi_mode) { ctrl |= HDMI_CTRL_HDMI; hdmi_write(hdmi, REG_HDMI_CTRL, ctrl); ctrl &= ~HDMI_CTRL_HDMI; } else { ctrl |= HDMI_CTRL_HDMI; } } else { ctrl = HDMI_CTRL_HDMI; } hdmi_write(hdmi, REG_HDMI_CTRL, ctrl); spin_unlock_irqrestore(&hdmi->reg_lock, flags); DBG("HDMI Core: %s, HDMI_CTRL=0x%08x", power_on ? "Enable" : "Disable", ctrl); } static irqreturn_t msm_hdmi_irq(int irq, void *dev_id) { struct hdmi *hdmi = dev_id; /* Process HPD: */ msm_hdmi_connector_irq(hdmi->connector); /* Process DDC: */ msm_hdmi_i2c_irq(hdmi->i2c); /* Process HDCP: */ if (hdmi->hdcp_ctrl) msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl); /* TODO audio.. */ return IRQ_HANDLED; } static void msm_hdmi_destroy(struct hdmi *hdmi) { /* * at this point, hpd has been disabled, * after flush workq, it's safe to deinit hdcp */ if (hdmi->workq) { flush_workqueue(hdmi->workq); destroy_workqueue(hdmi->workq); } msm_hdmi_hdcp_destroy(hdmi); if (hdmi->phy_dev) { put_device(hdmi->phy_dev); hdmi->phy = NULL; hdmi->phy_dev = NULL; } if (hdmi->i2c) msm_hdmi_i2c_destroy(hdmi->i2c); platform_set_drvdata(hdmi->pdev, NULL); } static int msm_hdmi_get_phy(struct hdmi *hdmi) { struct platform_device *pdev = hdmi->pdev; struct platform_device *phy_pdev; struct device_node *phy_node; phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0); if (!phy_node) { dev_err(&pdev->dev, "cannot find phy device\n"); return -ENXIO; } phy_pdev = of_find_device_by_node(phy_node); if (phy_pdev) hdmi->phy = platform_get_drvdata(phy_pdev); of_node_put(phy_node); if (!phy_pdev || !hdmi->phy) { dev_err(&pdev->dev, "phy driver is not ready\n"); return -EPROBE_DEFER; } hdmi->phy_dev = get_device(&phy_pdev->dev); return 0; } /* construct hdmi at bind/probe time, grab all the resources. If * we are to EPROBE_DEFER we want to do it here, rather than later * at modeset_init() time */ static struct hdmi *msm_hdmi_init(struct platform_device *pdev) { struct hdmi_platform_config *config = pdev->dev.platform_data; struct hdmi *hdmi = NULL; struct resource *res; int i, ret; hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); if (!hdmi) { ret = -ENOMEM; goto fail; } hdmi->pdev = pdev; hdmi->config = config; spin_lock_init(&hdmi->reg_lock); hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI"); if (IS_ERR(hdmi->mmio)) { ret = PTR_ERR(hdmi->mmio); goto fail; } /* HDCP needs physical address of hdmi register */ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, config->mmio_name); if (!res) { ret = -EINVAL; goto fail; } hdmi->mmio_phy_addr = res->start; hdmi->qfprom_mmio = msm_ioremap(pdev, config->qfprom_mmio_name, "HDMI_QFPROM"); if (IS_ERR(hdmi->qfprom_mmio)) { dev_info(&pdev->dev, "can't find qfprom resource\n"); hdmi->qfprom_mmio = NULL; } hdmi->hpd_regs = devm_kcalloc(&pdev->dev, config->hpd_reg_cnt, sizeof(hdmi->hpd_regs[0]), GFP_KERNEL); if (!hdmi->hpd_regs) { ret = -ENOMEM; goto fail; } for (i = 0; i < config->hpd_reg_cnt; i++) { struct regulator *reg; reg = devm_regulator_get(&pdev->dev, config->hpd_reg_names[i]); if (IS_ERR(reg)) { ret = PTR_ERR(reg); dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n", config->hpd_reg_names[i], ret); goto fail; } hdmi->hpd_regs[i] = reg; } hdmi->pwr_regs = devm_kcalloc(&pdev->dev, config->pwr_reg_cnt, sizeof(hdmi->pwr_regs[0]), GFP_KERNEL); if (!hdmi->pwr_regs) { ret = -ENOMEM; goto fail; } for (i = 0; i < config->pwr_reg_cnt; i++) { struct regulator *reg; reg = devm_regulator_get(&pdev->dev, config->pwr_reg_names[i]); if (IS_ERR(reg)) { ret = PTR_ERR(reg); dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n", config->pwr_reg_names[i], ret); goto fail; } hdmi->pwr_regs[i] = reg; } hdmi->hpd_clks = devm_kcalloc(&pdev->dev, config->hpd_clk_cnt, sizeof(hdmi->hpd_clks[0]), GFP_KERNEL); if (!hdmi->hpd_clks) { ret = -ENOMEM; goto fail; } for (i = 0; i < config->hpd_clk_cnt; i++) { struct clk *clk; clk = msm_clk_get(pdev, config->hpd_clk_names[i]); if (IS_ERR(clk)) { ret = PTR_ERR(clk); dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n", config->hpd_clk_names[i], ret); goto fail; } hdmi->hpd_clks[i] = clk; } hdmi->pwr_clks = devm_kcalloc(&pdev->dev, config->pwr_clk_cnt, sizeof(hdmi->pwr_clks[0]), GFP_KERNEL); if (!hdmi->pwr_clks) { ret = -ENOMEM; goto fail; } for (i = 0; i < config->pwr_clk_cnt; i++) { struct clk *clk; clk = msm_clk_get(pdev, config->pwr_clk_names[i]); if (IS_ERR(clk)) { ret = PTR_ERR(clk); dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n", config->pwr_clk_names[i], ret); goto fail; } hdmi->pwr_clks[i] = clk; } pm_runtime_enable(&pdev->dev); hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0); if (!hdmi->workq) { ret = -ENOMEM; goto fail; } hdmi->i2c = msm_hdmi_i2c_init(hdmi); if (IS_ERR(hdmi->i2c)) { ret = PTR_ERR(hdmi->i2c); dev_err(&pdev->dev, "failed to get i2c: %d\n", ret); hdmi->i2c = NULL; goto fail; } ret = msm_hdmi_get_phy(hdmi); if (ret) { dev_err(&pdev->dev, "failed to get phy\n"); goto fail; } hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi); if (IS_ERR(hdmi->hdcp_ctrl)) { dev_warn(&pdev->dev, "failed to init hdcp: disabled\n"); hdmi->hdcp_ctrl = NULL; } return hdmi; fail: if (hdmi) msm_hdmi_destroy(hdmi); return ERR_PTR(ret); } /* Second part of initialization, the drm/kms level modeset_init, * constructs/initializes mode objects, etc, is called from master * driver (not hdmi sub-device's probe/bind!) * * Any resource (regulator/clk/etc) which could be missing at boot * should be handled in msm_hdmi_init() so that failure happens from * hdmi sub-device's probe. */ int msm_hdmi_modeset_init(struct hdmi *hdmi, struct drm_device *dev, struct drm_encoder *encoder) { struct msm_drm_private *priv = dev->dev_private; struct platform_device *pdev = hdmi->pdev; int ret; if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) { DRM_DEV_ERROR(dev->dev, "too many bridges\n"); return -ENOSPC; } hdmi->dev = dev; hdmi->encoder = encoder; hdmi_audio_infoframe_init(&hdmi->audio.infoframe); hdmi->bridge = msm_hdmi_bridge_init(hdmi); if (IS_ERR(hdmi->bridge)) { ret = PTR_ERR(hdmi->bridge); dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret); hdmi->bridge = NULL; goto fail; } hdmi->connector = msm_hdmi_connector_init(hdmi); if (IS_ERR(hdmi->connector)) { ret = PTR_ERR(hdmi->connector); dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret); hdmi->connector = NULL; goto fail; } hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (hdmi->irq < 0) { ret = hdmi->irq; dev_err(dev->dev, "failed to get irq: %d\n", ret); goto fail; } ret = devm_request_irq(&pdev->dev, hdmi->irq, msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "hdmi_isr", hdmi); if (ret < 0) { dev_err(dev->dev, "failed to request IRQ%u: %d\n", hdmi->irq, ret); goto fail; } ret = msm_hdmi_hpd_enable(hdmi->connector); if (ret < 0) { DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret); goto fail; } encoder->bridge = hdmi->bridge; priv->bridges[priv->num_bridges++] = hdmi->bridge; priv->connectors[priv->num_connectors++] = hdmi->connector; platform_set_drvdata(pdev, hdmi); return 0; fail: /* bridge is normally destroyed by drm: */ if (hdmi->bridge) { msm_hdmi_bridge_destroy(hdmi->bridge); hdmi->bridge = NULL; } if (hdmi->connector) { hdmi->connector->funcs->destroy(hdmi->connector); hdmi->connector = NULL; } return ret; } /* * The hdmi device: */ #define HDMI_CFG(item, entry) \ .item ## _names = item ##_names_ ## entry, \ .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry) static const char *pwr_reg_names_none[] = {}; static const char *hpd_reg_names_none[] = {}; static struct hdmi_platform_config hdmi_tx_8660_config; static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"}; static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"}; static struct hdmi_platform_config hdmi_tx_8960_config = { HDMI_CFG(hpd_reg, 8960), HDMI_CFG(hpd_clk, 8960), }; static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"}; static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"}; static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"}; static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"}; static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0}; static struct hdmi_platform_config hdmi_tx_8974_config = { HDMI_CFG(pwr_reg, 8x74), HDMI_CFG(hpd_reg, 8x74), HDMI_CFG(pwr_clk, 8x74), HDMI_CFG(hpd_clk, 8x74), .hpd_freq = hpd_clk_freq_8x74, }; static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"}; static struct hdmi_platform_config hdmi_tx_8084_config = { HDMI_CFG(pwr_reg, 8x74), HDMI_CFG(hpd_reg, 8084), HDMI_CFG(pwr_clk, 8x74), HDMI_CFG(hpd_clk, 8x74), .hpd_freq = hpd_clk_freq_8x74, }; static struct hdmi_platform_config hdmi_tx_8994_config = { HDMI_CFG(pwr_reg, 8x74), HDMI_CFG(hpd_reg, none), HDMI_CFG(pwr_clk, 8x74), HDMI_CFG(hpd_clk, 8x74), .hpd_freq = hpd_clk_freq_8x74, }; static struct hdmi_platform_config hdmi_tx_8996_config = { HDMI_CFG(pwr_reg, none), HDMI_CFG(hpd_reg, none), HDMI_CFG(pwr_clk, 8x74), HDMI_CFG(hpd_clk, 8x74), .hpd_freq = hpd_clk_freq_8x74, }; static const struct { const char *name; const bool output; const int value; const char *label; } msm_hdmi_gpio_pdata[] = { { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" }, { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" }, { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" }, { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" }, { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" }, { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" }, }; static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name) { int gpio; /* try with the gpio names as in the table (downstream bindings) */ gpio = of_get_named_gpio(of_node, name, 0); if (gpio < 0) { char name2[32]; /* try with the gpio names as in the upstream bindings */ snprintf(name2, sizeof(name2), "%s-gpios", name); gpio = of_get_named_gpio(of_node, name2, 0); if (gpio < 0) { char name3[32]; /* * try again after stripping out the "qcom,hdmi-tx" * prefix. This is mainly to match "hpd-gpios" used * in the upstream bindings */ if (sscanf(name2, "qcom,hdmi-tx-%s", name3)) gpio = of_get_named_gpio(of_node, name3, 0); } if (gpio < 0) { DBG("failed to get gpio: %s (%d)", name, gpio); gpio = -1; } } return gpio; } /* * HDMI audio codec callbacks */ static int msm_hdmi_audio_hw_params(struct device *dev, void *data, struct hdmi_codec_daifmt *daifmt, struct hdmi_codec_params *params) { struct hdmi *hdmi = dev_get_drvdata(dev); unsigned int chan; unsigned int channel_allocation = 0; unsigned int rate; unsigned int level_shift = 0; /* 0dB */ bool down_mix = false; dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate, params->sample_width, params->cea.channels); switch (params->cea.channels) { case 2: /* FR and FL speakers */ channel_allocation = 0; chan = MSM_HDMI_AUDIO_CHANNEL_2; break; case 4: /* FC, LFE, FR and FL speakers */ channel_allocation = 0x3; chan = MSM_HDMI_AUDIO_CHANNEL_4; break; case 6: /* RR, RL, FC, LFE, FR and FL speakers */ channel_allocation = 0x0B; chan = MSM_HDMI_AUDIO_CHANNEL_6; break; case 8: /* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */ channel_allocation = 0x1F; chan = MSM_HDMI_AUDIO_CHANNEL_8; break; default: return -EINVAL; } switch (params->sample_rate) { case 32000: rate = HDMI_SAMPLE_RATE_32KHZ; break; case 44100: rate = HDMI_SAMPLE_RATE_44_1KHZ; break; case 48000: rate = HDMI_SAMPLE_RATE_48KHZ; break; case 88200: rate = HDMI_SAMPLE_RATE_88_2KHZ; break; case 96000: rate = HDMI_SAMPLE_RATE_96KHZ; break; case 176400: rate = HDMI_SAMPLE_RATE_176_4KHZ; break; case 192000: rate = HDMI_SAMPLE_RATE_192KHZ; break; default: dev_err(dev, "rate[%d] not supported!\n", params->sample_rate); return -EINVAL; } msm_hdmi_audio_set_sample_rate(hdmi, rate); msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation, level_shift, down_mix); return 0; } static void msm_hdmi_audio_shutdown(struct device *dev, void *data) { struct hdmi *hdmi = dev_get_drvdata(dev); msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0); } static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = { .hw_params = msm_hdmi_audio_hw_params, .audio_shutdown = msm_hdmi_audio_shutdown, }; static struct hdmi_codec_pdata codec_data = { .ops = &msm_hdmi_audio_codec_ops, .max_i2s_channels = 8, .i2s = 1, }; static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev) { hdmi->audio_pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, &codec_data, sizeof(codec_data)); return PTR_ERR_OR_ZERO(hdmi->audio_pdev); } static int msm_hdmi_bind(struct device *dev, struct device *master, void *data) { struct drm_device *drm = dev_get_drvdata(master); struct msm_drm_private *priv = drm->dev_private; static struct hdmi_platform_config *hdmi_cfg; struct hdmi *hdmi; struct device_node *of_node = dev->of_node; int i, err; hdmi_cfg = (struct hdmi_platform_config *) of_device_get_match_data(dev); if (!hdmi_cfg) { dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name); return -ENXIO; } hdmi_cfg->mmio_name = "core_physical"; hdmi_cfg->qfprom_mmio_name = "qfprom_physical"; for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) { hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node, msm_hdmi_gpio_pdata[i].name); hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output; hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value; hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label; } dev->platform_data = hdmi_cfg; hdmi = msm_hdmi_init(to_platform_device(dev)); if (IS_ERR(hdmi)) return PTR_ERR(hdmi); priv->hdmi = hdmi; err = msm_hdmi_register_audio_driver(hdmi, dev); if (err) { DRM_ERROR("Failed to attach an audio codec %d\n", err); hdmi->audio_pdev = NULL; } return 0; } static void msm_hdmi_unbind(struct device *dev, struct device *master, void *data) { struct drm_device *drm = dev_get_drvdata(master); struct msm_drm_private *priv = drm->dev_private; if (priv->hdmi) { if (priv->hdmi->audio_pdev) platform_device_unregister(priv->hdmi->audio_pdev); msm_hdmi_destroy(priv->hdmi); priv->hdmi = NULL; } } static const struct component_ops msm_hdmi_ops = { .bind = msm_hdmi_bind, .unbind = msm_hdmi_unbind, }; static int msm_hdmi_dev_probe(struct platform_device *pdev) { return component_add(&pdev->dev, &msm_hdmi_ops); } static int msm_hdmi_dev_remove(struct platform_device *pdev) { component_del(&pdev->dev, &msm_hdmi_ops); return 0; } static const struct of_device_id msm_hdmi_dt_match[] = { { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config }, { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config }, { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config }, { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config }, { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config }, { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config }, {} }; static struct platform_driver msm_hdmi_driver = { .probe = msm_hdmi_dev_probe, .remove = msm_hdmi_dev_remove, .driver = { .name = "hdmi_msm", .of_match_table = msm_hdmi_dt_match, }, }; void __init msm_hdmi_register(void) { msm_hdmi_phy_driver_register(); platform_driver_register(&msm_hdmi_driver); } void __exit msm_hdmi_unregister(void) { platform_driver_unregister(&msm_hdmi_driver); msm_hdmi_phy_driver_unregister(); }