diff options
Diffstat (limited to 'drivers/gpu/drm/msm/hdmi/hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/msm/hdmi/hdmi.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c new file mode 100644 index 000000000000..12ecfb928f75 --- /dev/null +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -0,0 +1,235 @@ +/* + * 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" + +static struct platform_device *hdmi_pdev; + +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; +} + +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); + + put_device(&hdmi->pdev->dev); +} + +/* initialize connector */ +int hdmi_init(struct hdmi *hdmi, struct drm_device *dev, + struct drm_connector *connector) +{ + struct platform_device *pdev = hdmi_pdev; + struct hdmi_platform_config *config; + int ret; + + if (!pdev) { + dev_err(dev->dev, "no hdmi device\n"); + ret = -ENXIO; + goto fail; + } + + config = pdev->dev.platform_data; + + get_device(&pdev->dev); + + hdmi->dev = dev; + hdmi->pdev = pdev; + hdmi->connector = connector; + + /* 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, "hdmi_msm_hdmi_addr", "HDMI"); + if (IS_ERR(hdmi->mmio)) { + ret = PTR_ERR(hdmi->mmio); + goto fail; + } + + hdmi->mvs = devm_regulator_get(&pdev->dev, "8901_hdmi_mvs"); + if (IS_ERR(hdmi->mvs)) + hdmi->mvs = devm_regulator_get(&pdev->dev, "hdmi_mvs"); + if (IS_ERR(hdmi->mvs)) { + ret = PTR_ERR(hdmi->mvs); + dev_err(dev->dev, "failed to get mvs regulator: %d\n", ret); + goto fail; + } + + hdmi->mpp0 = devm_regulator_get(&pdev->dev, "8901_mpp0"); + if (IS_ERR(hdmi->mpp0)) + hdmi->mpp0 = NULL; + + hdmi->clk = devm_clk_get(&pdev->dev, "core_clk"); + if (IS_ERR(hdmi->clk)) { + ret = PTR_ERR(hdmi->clk); + dev_err(dev->dev, "failed to get 'clk': %d\n", ret); + goto fail; + } + + hdmi->m_pclk = devm_clk_get(&pdev->dev, "master_iface_clk"); + if (IS_ERR(hdmi->m_pclk)) { + ret = PTR_ERR(hdmi->m_pclk); + dev_err(dev->dev, "failed to get 'm_pclk': %d\n", ret); + goto fail; + } + + hdmi->s_pclk = devm_clk_get(&pdev->dev, "slave_iface_clk"); + if (IS_ERR(hdmi->s_pclk)) { + ret = PTR_ERR(hdmi->s_pclk); + dev_err(dev->dev, "failed to get 's_pclk': %d\n", ret); + goto fail; + } + + 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->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; + } + + return 0; + +fail: + if (hdmi) + hdmi_destroy(hdmi); + + return ret; +} + +/* + * The hdmi device: + */ + +static int hdmi_dev_probe(struct platform_device *pdev) +{ + static struct hdmi_platform_config config = {}; +#ifdef CONFIG_OF + /* TODO */ +#else + if (cpu_is_apq8064()) { + config.phy_init = hdmi_phy_8960_init; + config.ddc_clk_gpio = 70; + config.ddc_data_gpio = 71; + config.hpd_gpio = 72; + config.pmic_gpio = 13 + NR_GPIO_IRQS; + } else if (cpu_is_msm8960()) { + config.phy_init = hdmi_phy_8960_init; + config.ddc_clk_gpio = 100; + config.ddc_data_gpio = 101; + config.hpd_gpio = 102; + config.pmic_gpio = -1; + } else if (cpu_is_msm8x60()) { + config.phy_init = hdmi_phy_8x60_init; + config.ddc_clk_gpio = 170; + config.ddc_data_gpio = 171; + config.hpd_gpio = 172; + config.pmic_gpio = -1; + } +#endif + pdev->dev.platform_data = &config; + hdmi_pdev = pdev; + return 0; +} + +static int hdmi_dev_remove(struct platform_device *pdev) +{ + hdmi_pdev = NULL; + return 0; +} + +static struct platform_driver hdmi_driver = { + .probe = hdmi_dev_probe, + .remove = hdmi_dev_remove, + .driver.name = "hdmi_msm", +}; + +void __init hdmi_register(void) +{ + platform_driver_register(&hdmi_driver); +} + +void __exit hdmi_unregister(void) +{ + platform_driver_unregister(&hdmi_driver); +} |