--- /dev/null
+/*
+ * Copyright (c) 2014 The Linux Foundation. All rights reserved.
+ * 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 <linux/of_irq.h>
+#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);
+}
+
+static 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;
+}
+
+static void hdmi_destroy(struct hdmi *hdmi)
+{
+ 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);
+}
+
+/* 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 *hdmi_init(struct platform_device *pdev)
+{
+ struct hdmi_platform_config *config = pdev->dev.platform_data;
+ struct hdmi *hdmi = NULL;
+ int i, ret;
+
+ hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
+ if (!hdmi) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ hdmi->pdev = pdev;
+ hdmi->config = config;
+
+ /* 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(&pdev->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;
+ }
+
+ hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
+ config->hpd_reg_cnt, 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_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
+ config->pwr_reg_cnt, 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_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
+ config->hpd_clk_cnt, GFP_KERNEL);
+ if (!hdmi->hpd_clks) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+ 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(&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_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
+ config->pwr_clk_cnt, GFP_KERNEL);
+ if (!hdmi->pwr_clks) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+ 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(&pdev->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(&pdev->dev, "failed to get i2c: %d\n", ret);
+ hdmi->i2c = NULL;
+ goto fail;
+ }
+
+ return hdmi;
+
+fail:
+ if (hdmi)
+ 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 hdmi_init() so that failure happens from
+ * hdmi sub-device's probe.
+ */
+int 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;
+
+ hdmi->dev = dev;
+ hdmi->encoder = encoder;
+
+ hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
+
+ 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;
+ }
+
+ 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,
+ 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 0;
+
+fail:
+ /* bridge is normally destroyed by drm: */
+ if (hdmi->bridge) {
+ 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:
+ */
+
+#include <linux/of_gpio.h>
+
+#define HDMI_CFG(item, entry) \
+ .item ## _names = item ##_names_ ## entry, \
+ .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
+
+static struct hdmi_platform_config hdmi_tx_8660_config = {
+ .phy_init = hdmi_phy_8x60_init,
+};
+
+static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
+static const char *hpd_clk_names_8960[] = {"core_clk", "master_iface_clk", "slave_iface_clk"};
+
+static struct hdmi_platform_config hdmi_tx_8960_config = {
+ .phy_init = hdmi_phy_8960_init,
+ 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_clk", "alt_iface_clk"};
+static const char *hpd_clk_names_8x74[] = {"iface_clk", "core_clk", "mdp_core_clk"};
+static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
+
+static struct hdmi_platform_config hdmi_tx_8074_config = {
+ .phy_init = hdmi_phy_8x74_init,
+ 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 = {
+ .phy_init = hdmi_phy_8x74_init,
+ 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 const struct of_device_id dt_match[] = {
+ { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
+ { .compatible = "qcom,hdmi-tx-8074", .data = &hdmi_tx_8074_config },
+ { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
+ { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
+ {}
+};
+
+#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)
+{
+ 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;
+#ifdef CONFIG_OF
+ struct device_node *of_node = dev->of_node;
+ const struct of_device_id *match;
+
+ match = of_match_node(dt_match, of_node);
+ if (match && match->data) {
+ hdmi_cfg = (struct hdmi_platform_config *)match->data;
+ DBG("hdmi phy: %s", match->compatible);
+ } else {
+ dev_err(dev, "unknown phy: %s\n", of_node->name);
+ return -ENXIO;
+ }
+
+ hdmi_cfg->mmio_name = "core_physical";
+ hdmi_cfg->ddc_clk_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-clk");
+ hdmi_cfg->ddc_data_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-ddc-data");
+ hdmi_cfg->hpd_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-hpd");
+ hdmi_cfg->mux_en_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-en");
+ hdmi_cfg->mux_sel_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-sel");
+ hdmi_cfg->mux_lpm_gpio = get_gpio(dev, of_node, "qcom,hdmi-tx-mux-lpm");
+
+#else
+ static struct hdmi_platform_config config = {};
+ 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;
+ }
+ hdmi_cfg = &config;
+#endif
+ dev->platform_data = hdmi_cfg;
+
+ hdmi = hdmi_init(to_platform_device(dev));
+ if (IS_ERR(hdmi))
+ return PTR_ERR(hdmi);
+ priv->hdmi = hdmi;
+
+ return 0;
+}
+
+static void 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) {
+ hdmi_destroy(priv->hdmi);
+ priv->hdmi = 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 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);
+}
Code Review / kvmfornfv.git / blobdiff