| /* |
| * Copyright (C) 2013 Red Hat |
| * Author: Rob Clark <robdclark@gmail.com> |
| * |
| * 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "hdmi.h" |
| |
| void hdmi_set_mode(struct hdmi *hdmi, bool power_on) |
| { |
| uint32_t ctrl = 0; |
| |
| 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); |
| DBG("HDMI Core: %s, HDMI_CTRL=0x%08x", |
| power_on ? "Enable" : "Disable", ctrl); |
| } |
| |
| irqreturn_t hdmi_irq(int irq, void *dev_id) |
| { |
| struct hdmi *hdmi = dev_id; |
| |
| /* Process HPD: */ |
| hdmi_connector_irq(hdmi->connector); |
| |
| /* Process DDC: */ |
| hdmi_i2c_irq(hdmi->i2c); |
| |
| /* TODO audio.. */ |
| |
| return IRQ_HANDLED; |
| } |
| |
| void hdmi_destroy(struct kref *kref) |
| { |
| struct hdmi *hdmi = container_of(kref, struct hdmi, refcount); |
| struct hdmi_phy *phy = hdmi->phy; |
| |
| if (phy) |
| phy->funcs->destroy(phy); |
| |
| if (hdmi->i2c) |
| hdmi_i2c_destroy(hdmi->i2c); |
| |
| platform_set_drvdata(hdmi->pdev, NULL); |
| } |
| |
| /* initialize connector */ |
| struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder) |
| { |
| struct hdmi *hdmi = NULL; |
| struct msm_drm_private *priv = dev->dev_private; |
| struct platform_device *pdev = priv->hdmi_pdev; |
| struct hdmi_platform_config *config; |
| int i, ret; |
| |
| if (!pdev) { |
| dev_err(dev->dev, "no hdmi device\n"); |
| ret = -ENXIO; |
| goto fail; |
| } |
| |
| config = pdev->dev.platform_data; |
| |
| hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL); |
| if (!hdmi) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| kref_init(&hdmi->refcount); |
| |
| hdmi->dev = dev; |
| hdmi->pdev = pdev; |
| hdmi->config = config; |
| hdmi->encoder = encoder; |
| |
| hdmi_audio_infoframe_init(&hdmi->audio.infoframe); |
| |
| /* not sure about which phy maps to which msm.. probably I miss some */ |
| if (config->phy_init) |
| hdmi->phy = config->phy_init(hdmi); |
| else |
| hdmi->phy = ERR_PTR(-ENXIO); |
| |
| if (IS_ERR(hdmi->phy)) { |
| ret = PTR_ERR(hdmi->phy); |
| dev_err(dev->dev, "failed to load phy: %d\n", ret); |
| hdmi->phy = NULL; |
| goto fail; |
| } |
| |
| hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI"); |
| if (IS_ERR(hdmi->mmio)) { |
| ret = PTR_ERR(hdmi->mmio); |
| goto fail; |
| } |
| |
| BUG_ON(config->hpd_reg_cnt > ARRAY_SIZE(hdmi->hpd_regs)); |
| 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(dev->dev, "failed to get hpd regulator: %s (%d)\n", |
| config->hpd_reg_names[i], ret); |
| goto fail; |
| } |
| |
| hdmi->hpd_regs[i] = reg; |
| } |
| |
| BUG_ON(config->pwr_reg_cnt > ARRAY_SIZE(hdmi->pwr_regs)); |
| 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(dev->dev, "failed to get pwr regulator: %s (%d)\n", |
| config->pwr_reg_names[i], ret); |
| goto fail; |
| } |
| |
| hdmi->pwr_regs[i] = reg; |
| } |
| |
| BUG_ON(config->hpd_clk_cnt > ARRAY_SIZE(hdmi->hpd_clks)); |
| for (i = 0; i < config->hpd_clk_cnt; i++) { |
| struct clk *clk; |
| |
| clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]); |
| if (IS_ERR(clk)) { |
| ret = PTR_ERR(clk); |
| dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n", |
| config->hpd_clk_names[i], ret); |
| goto fail; |
| } |
| |
| hdmi->hpd_clks[i] = clk; |
| } |
| |
| BUG_ON(config->pwr_clk_cnt > ARRAY_SIZE(hdmi->pwr_clks)); |
| for (i = 0; i < config->pwr_clk_cnt; i++) { |
| struct clk *clk; |
| |
| clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]); |
| if (IS_ERR(clk)) { |
| ret = PTR_ERR(clk); |
| dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n", |
| config->pwr_clk_names[i], ret); |
| goto fail; |
| } |
| |
| hdmi->pwr_clks[i] = clk; |
| } |
| |
| hdmi->i2c = hdmi_i2c_init(hdmi); |
| if (IS_ERR(hdmi->i2c)) { |
| ret = PTR_ERR(hdmi->i2c); |
| dev_err(dev->dev, "failed to get i2c: %d\n", ret); |
| hdmi->i2c = NULL; |
| goto fail; |
| } |
| |
| hdmi->bridge = 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 = 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; |
| } |
| |
| if (!config->shared_irq) { |
| hdmi->irq = platform_get_irq(pdev, 0); |
| if (hdmi->irq < 0) { |
| ret = hdmi->irq; |
| dev_err(dev->dev, "failed to get irq: %d\n", ret); |
| goto fail; |
| } |
| |
| ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq, |
| NULL, 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; |
| } |
| } |
| |
| encoder->bridge = hdmi->bridge; |
| |
| priv->bridges[priv->num_bridges++] = hdmi->bridge; |
| priv->connectors[priv->num_connectors++] = hdmi->connector; |
| |
| platform_set_drvdata(pdev, hdmi); |
| |
| return hdmi; |
| |
| fail: |
| if (hdmi) { |
| /* bridge/connector are normally destroyed by drm: */ |
| if (hdmi->bridge) |
| hdmi->bridge->funcs->destroy(hdmi->bridge); |
| if (hdmi->connector) |
| hdmi->connector->funcs->destroy(hdmi->connector); |
| hdmi_destroy(&hdmi->refcount); |
| } |
| |
| return ERR_PTR(ret); |
| } |
| |
| /* |
| * The hdmi device: |
| */ |
| |
| #include <linux/of_gpio.h> |
| |
| static void set_hdmi_pdev(struct drm_device *dev, |
| struct platform_device *pdev) |
| { |
| struct msm_drm_private *priv = dev->dev_private; |
| priv->hdmi_pdev = pdev; |
| } |
| |
| #ifdef CONFIG_OF |
| static int get_gpio(struct device *dev, struct device_node *of_node, const char *name) |
| { |
| int gpio = of_get_named_gpio(of_node, name, 0); |
| if (gpio < 0) { |
| char name2[32]; |
| snprintf(name2, sizeof(name2), "%s-gpio", name); |
| gpio = of_get_named_gpio(of_node, name2, 0); |
| if (gpio < 0) { |
| dev_err(dev, "failed to get gpio: %s (%d)\n", |
| name, gpio); |
| gpio = -1; |
| } |
| } |
| return gpio; |
| } |
| #endif |
| |
| static int hdmi_bind(struct device *dev, struct device *master, void *data) |
| { |
| static struct hdmi_platform_config config = {}; |
| #ifdef CONFIG_OF |
| struct device_node *of_node = dev->of_node; |
| |
| if (of_device_is_compatible(of_node, "qcom,hdmi-tx-8074")) { |
| static const char *hpd_reg_names[] = {"hpd-gdsc", "hpd-5v"}; |
| static const char *pwr_reg_names[] = {"core-vdda", "core-vcc"}; |
| static const char *hpd_clk_names[] = {"iface_clk", "core_clk", "mdp_core_clk"}; |
| static unsigned long hpd_clk_freq[] = {0, 19200000, 0}; |
| static const char *pwr_clk_names[] = {"extp_clk", "alt_iface_clk"}; |
| config.phy_init = hdmi_phy_8x74_init; |
| config.hpd_reg_names = hpd_reg_names; |
| config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); |
| config.pwr_reg_names = pwr_reg_names; |
| config.pwr_reg_cnt = ARRAY_SIZE(pwr_reg_names); |
| config.hpd_clk_names = hpd_clk_names; |
| config.hpd_freq = hpd_clk_freq; |
| config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); |
| config.pwr_clk_names = pwr_clk_names; |
| config.pwr_clk_cnt = ARRAY_SIZE(pwr_clk_names); |
| config.shared_irq = true; |
| } else if (of_device_is_compatible(of_node, "qcom,hdmi-tx-8960")) { |
| static const char *hpd_clk_names[] = {"core_clk", "master_iface_clk", "slave_iface_clk"}; |
| static const char *hpd_reg_names[] = {"core-vdda", "hdmi-mux"}; |
| config.phy_init = hdmi_phy_8960_init; |
| config.hpd_reg_names = hpd_reg_names; |
| config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); |
| config.hpd_clk_names = hpd_clk_names; |
| config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); |
| } else if (of_device_is_compatible(of_node, "qcom,hdmi-tx-8660")) { |
| config.phy_init = hdmi_phy_8x60_init; |
| } else { |
| dev_err(dev, "unknown phy: %s\n", of_node->name); |
| } |
| |
| config.mmio_name = "core_physical"; |
| config.ddc_clk_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-clk"); |
| config.ddc_data_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-data"); |
| config.hpd_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-hpd"); |
| config.mux_en_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-en"); |
| config.mux_sel_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-sel"); |
| config.mux_lpm_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-lpm"); |
| |
| #else |
| static const char *hpd_clk_names[] = { |
| "core_clk", "master_iface_clk", "slave_iface_clk", |
| }; |
| if (cpu_is_apq8064()) { |
| static const char *hpd_reg_names[] = {"8921_hdmi_mvs"}; |
| config.phy_init = hdmi_phy_8960_init; |
| config.mmio_name = "hdmi_msm_hdmi_addr"; |
| config.hpd_reg_names = hpd_reg_names; |
| config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); |
| config.hpd_clk_names = hpd_clk_names; |
| config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); |
| config.ddc_clk_gpio = 70; |
| config.ddc_data_gpio = 71; |
| config.hpd_gpio = 72; |
| config.mux_en_gpio = -1; |
| config.mux_sel_gpio = -1; |
| } else if (cpu_is_msm8960() || cpu_is_msm8960ab()) { |
| static const char *hpd_reg_names[] = {"8921_hdmi_mvs"}; |
| config.phy_init = hdmi_phy_8960_init; |
| config.mmio_name = "hdmi_msm_hdmi_addr"; |
| config.hpd_reg_names = hpd_reg_names; |
| config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); |
| config.hpd_clk_names = hpd_clk_names; |
| config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); |
| config.ddc_clk_gpio = 100; |
| config.ddc_data_gpio = 101; |
| config.hpd_gpio = 102; |
| config.mux_en_gpio = -1; |
| config.mux_sel_gpio = -1; |
| } else if (cpu_is_msm8x60()) { |
| static const char *hpd_reg_names[] = { |
| "8901_hdmi_mvs", "8901_mpp0" |
| }; |
| config.phy_init = hdmi_phy_8x60_init; |
| config.mmio_name = "hdmi_msm_hdmi_addr"; |
| config.hpd_reg_names = hpd_reg_names; |
| config.hpd_reg_cnt = ARRAY_SIZE(hpd_reg_names); |
| config.hpd_clk_names = hpd_clk_names; |
| config.hpd_clk_cnt = ARRAY_SIZE(hpd_clk_names); |
| config.ddc_clk_gpio = 170; |
| config.ddc_data_gpio = 171; |
| config.hpd_gpio = 172; |
| config.mux_en_gpio = -1; |
| config.mux_sel_gpio = -1; |
| } |
| #endif |
| dev->platform_data = &config; |
| set_hdmi_pdev(dev_get_drvdata(master), to_platform_device(dev)); |
| return 0; |
| } |
| |
| static void hdmi_unbind(struct device *dev, struct device *master, |
| void *data) |
| { |
| set_hdmi_pdev(dev_get_drvdata(master), NULL); |
| } |
| |
| static const struct component_ops hdmi_ops = { |
| .bind = hdmi_bind, |
| .unbind = hdmi_unbind, |
| }; |
| |
| static int hdmi_dev_probe(struct platform_device *pdev) |
| { |
| return component_add(&pdev->dev, &hdmi_ops); |
| } |
| |
| static int hdmi_dev_remove(struct platform_device *pdev) |
| { |
| component_del(&pdev->dev, &hdmi_ops); |
| return 0; |
| } |
| |
| static const struct of_device_id dt_match[] = { |
| { .compatible = "qcom,hdmi-tx-8074" }, |
| { .compatible = "qcom,hdmi-tx-8960" }, |
| { .compatible = "qcom,hdmi-tx-8660" }, |
| {} |
| }; |
| |
| static struct platform_driver hdmi_driver = { |
| .probe = hdmi_dev_probe, |
| .remove = hdmi_dev_remove, |
| .driver = { |
| .name = "hdmi_msm", |
| .of_match_table = dt_match, |
| }, |
| }; |
| |
| void __init hdmi_register(void) |
| { |
| platform_driver_register(&hdmi_driver); |
| } |
| |
| void __exit hdmi_unregister(void) |
| { |
| platform_driver_unregister(&hdmi_driver); |
| } |