diff options
26 files changed, 5483 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 626bc0cb104..39573c5f751 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -223,3 +223,5 @@ source "drivers/gpu/drm/omapdrm/Kconfig" source "drivers/gpu/drm/tilcdc/Kconfig" source "drivers/gpu/drm/qxl/Kconfig" + +source "drivers/gpu/drm/msm/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 7b2343a2f5e..f089adfe70e 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -54,4 +54,5 @@ obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/ obj-$(CONFIG_DRM_OMAP) += omapdrm/ obj-$(CONFIG_DRM_TILCDC) += tilcdc/ obj-$(CONFIG_DRM_QXL) += qxl/ +obj-$(CONFIG_DRM_MSM) += msm/ obj-y += i2c/ diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig new file mode 100644 index 00000000000..a06c19cc56f --- /dev/null +++ b/drivers/gpu/drm/msm/Kconfig @@ -0,0 +1,34 @@ + +config DRM_MSM + tristate "MSM DRM" + depends on DRM + depends on ARCH_MSM + depends on ARCH_MSM8960 + select DRM_KMS_HELPER + select SHMEM + select TMPFS + default y + help + DRM/KMS driver for MSM/snapdragon. + +config DRM_MSM_FBDEV + bool "Enable legacy fbdev support for MSM modesetting driver" + depends on DRM_MSM + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + select FB_SYS_FOPS + default y + help + Choose this option if you have a need for the legacy fbdev + support. Note that this support also provide the linux console + support on top of the MSM modesetting driver. + +config DRM_MSM_REGISTER_LOGGING + bool "MSM DRM register logging" + depends on DRM_MSM + default n + help + Compile in support for logging register reads/writes in a format + that can be parsed by envytools demsm tool. If enabled, register + logging can be switched on via msm.reglog=y module param. diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile new file mode 100644 index 00000000000..4068122a937 --- /dev/null +++ b/drivers/gpu/drm/msm/Makefile @@ -0,0 +1,25 @@ +ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/msm +ifeq (, $(findstring -W,$(EXTRA_CFLAGS))) + ccflags-y += -Werror +endif + +msm-y := \ + hdmi/hdmi.o \ + hdmi/hdmi_connector.o \ + hdmi/hdmi_i2c.o \ + hdmi/hdmi_phy_8960.o \ + hdmi/hdmi_phy_8x60.o \ + mdp4/mdp4_crtc.o \ + mdp4/mdp4_dtv_encoder.o \ + mdp4/mdp4_format.o \ + mdp4/mdp4_irq.o \ + mdp4/mdp4_kms.o \ + mdp4/mdp4_plane.o \ + msm_connector.o \ + msm_drv.o \ + msm_fb.o \ + msm_gem.o + +msm-$(CONFIG_DRM_MSM_FBDEV) += msm_fbdev.o + +obj-$(CONFIG_DRM_MSM) += msm.o diff --git a/drivers/gpu/drm/msm/NOTES b/drivers/gpu/drm/msm/NOTES new file mode 100644 index 00000000000..e036f6c1db9 --- /dev/null +++ b/drivers/gpu/drm/msm/NOTES @@ -0,0 +1,69 @@ +NOTES about msm drm/kms driver: + +In the current snapdragon SoC's, we have (at least) 3 different +display controller blocks at play: + + MDP3 - ?? seems to be what is on geeksphone peak device + + MDP4 - S3 (APQ8060, touchpad), S4-pro (APQ8064, nexus4 & ifc6410) + + MDSS - snapdragon 800 + +(I don't have a completely clear picture on which display controller +maps to which part #) + +Plus a handful of blocks around them for HDMI/DSI/etc output. + +And on gpu side of things: + + zero, one, or two 2d cores (z180) + + and either a2xx or a3xx 3d core. + +But, HDMI/DSI/etc blocks seem like they can be shared across multiple +display controller blocks. And I for sure don't want to have to deal +with N different kms devices from xf86-video-freedreno. Plus, it +seems like we can do some clever tricks like use GPU to trigger +pageflip after rendering completes (ie. have the kms/crtc code build +up gpu cmdstream to update scanout and write FLUSH register after). + +So, the approach is one drm driver, with some modularity. Different +'struct msm_kms' implementations, depending on display controller. +And one or more 'struct msm_gpu' for the various different gpu sub- +modules. + +(Second part is not implemented yet. So far this is just basic KMS +driver, and not exposing any custom ioctls to userspace for now.) + +The kms module provides the plane, crtc, and encoder objects, and +loads whatever connectors are appropriate. + +For MDP4, the mapping is: + + plane -> PIPE{RGBn,VGn} \ + crtc -> OVLP{n} + DMA{P,S,E} (??) |-> MDP "device" + encoder -> DTV/LCDC/DSI (within MDP4) / + connector -> HDMI/DSI/etc --> other device(s) + +Since the irq's that drm core mostly cares about are vblank/framedone, +we'll let msm_mdp4_kms provide the irq install/uninstall/etc functions +and treat the MDP4 block's irq as "the" irq. Even though the connectors +may have their own irqs which they install themselves. For this reason +the display controller is the "master" device. + +Each connector probably ends up being a separate device, just for the +logistics of finding/mapping io region, irq, etc. Idealy we would +have a better way than just stashing the platform device in a global +(ie. like DT super-node.. but I don't have any snapdragon hw yet that +is using DT). + +Note that so far I've not been able to get any docs on the hw, and it +seems that access to such docs would prevent me from working on the +freedreno gallium driver. So there may be some mistakes in register +names (I had to invent a few, since no sufficient hint was given in +the downstream android fbdev driver), bitfield sizes, etc. My current +state of understanding the registers is given in the envytools rnndb +files at: + + https://github.com/freedreno/envytools/tree/master/rnndb + (the mdp4/hdmi/dsi directories) + +These files are used both for a parser tool (in the same tree) to +parse logged register reads/writes (both from downstream android fbdev +driver, and this driver with register logging enabled), as well as to +generate the register level headers. diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c new file mode 100644 index 00000000000..12ecfb928f7 --- /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); +} diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h new file mode 100644 index 00000000000..34703fea22c --- /dev/null +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h @@ -0,0 +1,112 @@ +/* + * 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/>. + */ + +#ifndef __HDMI_CONNECTOR_H__ +#define __HDMI_CONNECTOR_H__ + +#include <linux/i2c.h> +#include <linux/clk.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> + +#include "msm_drv.h" +#include "hdmi.xml.h" + + +struct hdmi_phy; + +struct hdmi { + struct drm_device *dev; + struct platform_device *pdev; + + void __iomem *mmio; + + struct regulator *mvs; /* HDMI_5V */ + struct regulator *mpp0; /* External 5V */ + + struct clk *clk; + struct clk *m_pclk; + struct clk *s_pclk; + + struct hdmi_phy *phy; + struct i2c_adapter *i2c; + struct drm_connector *connector; + + bool hdmi_mode; /* are we in hdmi mode? */ + + int irq; +}; + +/* platform config data (ie. from DT, or pdata) */ +struct hdmi_platform_config { + struct hdmi_phy *(*phy_init)(struct hdmi *hdmi); + int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, pmic_gpio; +}; + +void hdmi_set_mode(struct hdmi *hdmi, bool power_on); +void hdmi_destroy(struct hdmi *hdmi); +int hdmi_init(struct hdmi *hdmi, struct drm_device *dev, + struct drm_connector *connector); + +static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data) +{ + msm_writel(data, hdmi->mmio + reg); +} + +static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg) +{ + return msm_readl(hdmi->mmio + reg); +} + +/* + * The phy appears to be different, for example between 8960 and 8x60, + * so split the phy related functions out and load the correct one at + * runtime: + */ + +struct hdmi_phy_funcs { + void (*destroy)(struct hdmi_phy *phy); + void (*reset)(struct hdmi_phy *phy); + void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock); + void (*powerdown)(struct hdmi_phy *phy); +}; + +struct hdmi_phy { + const struct hdmi_phy_funcs *funcs; +}; + +/* + * phy can be different on different generations: + */ +struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi); +struct hdmi_phy *hdmi_phy_8x60_init(struct hdmi *hdmi); + +/* + * hdmi connector: + */ + +void hdmi_connector_irq(struct drm_connector *connector); + +/* + * i2c adapter for ddc: + */ + +void hdmi_i2c_irq(struct i2c_adapter *i2c); +void hdmi_i2c_destroy(struct i2c_adapter *i2c); +struct i2c_adapter *hdmi_i2c_init(struct hdmi *hdmi); + +#endif /* __HDMI_CONNECTOR_H__ */ diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c new file mode 100644 index 00000000000..7d63f5ffa7b --- /dev/null +++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c @@ -0,0 +1,461 @@ +/* + * 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/gpio.h> + +#include "msm_connector.h" +#include "hdmi.h" + +struct hdmi_connector { + struct msm_connector base; + struct hdmi hdmi; + unsigned long int pixclock; + bool enabled; +}; +#define to_hdmi_connector(x) container_of(x, struct hdmi_connector, base) + +static int gpio_config(struct hdmi *hdmi, bool on) +{ + struct drm_device *dev = hdmi->dev; + struct hdmi_platform_config *config = + hdmi->pdev->dev.platform_data; + int ret; + + if (on) { + ret = gpio_request(config->ddc_clk_gpio, "HDMI_DDC_CLK"); + if (ret) { + dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n", + "HDMI_DDC_CLK", config->ddc_clk_gpio, ret); + goto error1; + } + ret = gpio_request(config->ddc_data_gpio, "HDMI_DDC_DATA"); + if (ret) { + dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n", + "HDMI_DDC_DATA", config->ddc_data_gpio, ret); + goto error2; + } + ret = gpio_request(config->hpd_gpio, "HDMI_HPD"); + if (ret) { + dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n", + "HDMI_HPD", config->hpd_gpio, ret); + goto error3; + } + if (config->pmic_gpio != -1) { + ret = gpio_request(config->pmic_gpio, "PMIC_HDMI_MUX_SEL"); + if (ret) { + dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n", + "PMIC_HDMI_MUX_SEL", config->pmic_gpio, ret); + goto error4; + } + gpio_set_value_cansleep(config->pmic_gpio, 0); + } + DBG("gpio on"); + } else { + gpio_free(config->ddc_clk_gpio); + gpio_free(config->ddc_data_gpio); + gpio_free(config->hpd_gpio); + + if (config->pmic_gpio != -1) { + gpio_set_value_cansleep(config->pmic_gpio, 1); + gpio_free(config->pmic_gpio); + } + DBG("gpio off"); + } + + return 0; + +error4: + gpio_free(config->hpd_gpio); +error3: + gpio_free(config->ddc_data_gpio); +error2: + gpio_free(config->ddc_clk_gpio); +error1: + return ret; +} + +static int hpd_enable(struct hdmi_connector *hdmi_connector) +{ + struct hdmi *hdmi = &hdmi_connector->hdmi; + struct drm_device *dev = hdmi_connector->base.base.dev; + struct hdmi_phy *phy = hdmi->phy; + uint32_t hpd_ctrl; + int ret; + + ret = gpio_config(hdmi, true); + if (ret) { + dev_err(dev->dev, "failed to configure GPIOs: %d\n", ret); + goto fail; + } + + ret = clk_prepare_enable(hdmi->clk); + if (ret) { + dev_err(dev->dev, "failed to enable 'clk': %d\n", ret); + goto fail; + } + + ret = clk_prepare_enable(hdmi->m_pclk); + if (ret) { + dev_err(dev->dev, "failed to enable 'm_pclk': %d\n", ret); + goto fail; + } + + ret = clk_prepare_enable(hdmi->s_pclk); + if (ret) { + dev_err(dev->dev, "failed to enable 's_pclk': %d\n", ret); + goto fail; + } + + if (hdmi->mpp0) + ret = regulator_enable(hdmi->mpp0); + if (!ret) + ret = regulator_enable(hdmi->mvs); + if (ret) { + dev_err(dev->dev, "failed to enable regulators: %d\n", ret); + goto fail; + } + + hdmi_set_mode(hdmi, false); + phy->funcs->reset(phy); + hdmi_set_mode(hdmi, true); + + hdmi_write(hdmi, REG_HDMI_USEC_REFTIMER, 0x0001001b); + + /* enable HPD events: */ + hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, + HDMI_HPD_INT_CTRL_INT_CONNECT | + HDMI_HPD_INT_CTRL_INT_EN); + + /* set timeout to 4.1ms (max) for hardware debounce */ + hpd_ctrl = hdmi_read(hdmi, REG_HDMI_HPD_CTRL); + hpd_ctrl |= HDMI_HPD_CTRL_TIMEOUT(0x1fff); + + /* Toggle HPD circuit to trigger HPD sense */ + hdmi_write(hdmi, REG_HDMI_HPD_CTRL, + ~HDMI_HPD_CTRL_ENABLE & hpd_ctrl); + hdmi_write(hdmi, REG_HDMI_HPD_CTRL, + HDMI_HPD_CTRL_ENABLE | hpd_ctrl); + + return 0; + +fail: + return ret; +} + +static int hdp_disable(struct hdmi_connector *hdmi_connector) +{ + struct hdmi *hdmi = &hdmi_connector->hdmi; + struct drm_device *dev = hdmi_connector->base.base.dev; + int ret = 0; + + /* Disable HPD interrupt */ + hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, 0); + + hdmi_set_mode(hdmi, false); + + if (hdmi->mpp0) + ret = regulator_disable(hdmi->mpp0); + if (!ret) + ret = regulator_disable(hdmi->mvs); + if (ret) { + dev_err(dev->dev, "failed to enable regulators: %d\n", ret); + goto fail; + } + + clk_disable_unprepare(hdmi->clk); + clk_disable_unprepare(hdmi->m_pclk); + clk_disable_unprepare(hdmi->s_pclk); + + ret = gpio_config(hdmi, false); + if (ret) { + dev_err(dev->dev, "failed to unconfigure GPIOs: %d\n", ret); + goto fail; + } + + return 0; + +fail: + return ret; +} + +void hdmi_connector_irq(struct drm_connector *connector) +{ + struct msm_connector *msm_connector = to_msm_connector(connector); + struct hdmi_connector *hdmi_connector = to_hdmi_connector(msm_connector); + struct hdmi *hdmi = &hdmi_connector->hdmi; + uint32_t hpd_int_status, hpd_int_ctrl; + + /* Process HPD: */ + hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS); + hpd_int_ctrl = hdmi_read(hdmi, REG_HDMI_HPD_INT_CTRL); + + if ((hpd_int_ctrl & HDMI_HPD_INT_CTRL_INT_EN) && + (hpd_int_status & HDMI_HPD_INT_STATUS_INT)) { + bool detected = !!(hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED); + + DBG("status=%04x, ctrl=%04x", hpd_int_status, hpd_int_ctrl); + + /* ack the irq: */ + hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, + hpd_int_ctrl | HDMI_HPD_INT_CTRL_INT_ACK); + + drm_helper_hpd_irq_event(connector->dev); + + /* detect disconnect if we are connected or visa versa: */ + hpd_int_ctrl = HDMI_HPD_INT_CTRL_INT_EN; + if (!detected) + hpd_int_ctrl |= HDMI_HPD_INT_CTRL_INT_CONNECT; + hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, hpd_int_ctrl); + } +} + +static enum drm_connector_status hdmi_connector_detect( + struct drm_connector *connector, bool force) +{ + struct msm_connector *msm_connector = to_msm_connector(connector); + struct hdmi_connector *hdmi_connector = to_hdmi_connector(msm_connector); + struct hdmi *hdmi = &hdmi_connector->hdmi; + uint32_t hpd_int_status; + int retry = 20; + + hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS); + + /* sense seems to in some cases be momentarily de-asserted, don't + * let that trick us into thinking the monitor is gone: + */ + while (retry-- && !(hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED)) { + mdelay(10); + hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS); + DBG("status=%08x", hpd_int_status); + } + + return (hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED) ? + connector_status_connected : connector_status_disconnected; +} + +static void hdmi_connector_destroy(struct drm_connector *connector) +{ + struct msm_connector *msm_connector = to_msm_connector(connector); + struct hdmi_connector *hdmi_connector = to_hdmi_connector(msm_connector); + + hdp_disable(hdmi_connector); + + drm_sysfs_connector_remove(connector); + drm_connector_cleanup(connector); + + hdmi_destroy(&hdmi_connector->hdmi); + + kfree(hdmi_connector); +} + +static int hdmi_connector_get_modes(struct drm_connector *connector) +{ + struct msm_connector *msm_connector = to_msm_connector(connector); + struct hdmi_connector *hdmi_connector = to_hdmi_connector(msm_connector); + struct hdmi *hdmi = &hdmi_connector->hdmi; + struct edid *edid; + uint32_t hdmi_ctrl; + int ret = 0; + + hdmi_ctrl = hdmi_read(hdmi, REG_HDMI_CTRL); + hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl | HDMI_CTRL_ENABLE); + + edid = drm_get_edid(connector, hdmi->i2c); + + hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl); + + drm_mode_connector_update_edid_property(connector, edid); + + if (edid) { + ret = drm_add_edid_modes(connector, edid); + kfree(edid); + } + + return ret; +} + +static int hdmi_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct msm_connector *msm_connector = to_msm_connector(connector); + struct msm_drm_private *priv = connector->dev->dev_private; + struct msm_kms *kms = priv->kms; + long actual, requested; + + requested = 1000 * mode->clock; + actual = kms->funcs->round_pixclk(kms, + requested, msm_connector->encoder); + + DBG("requested=%ld, actual=%ld", requested, actual); + + if (actual != requested) + return MODE_CLOCK_RANGE; + + return 0; +} + +static const struct drm_connector_funcs hdmi_connector_funcs = { + .dpms = drm_helper_connector_dpms, + .detect = hdmi_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = hdmi_connector_destroy, +}; + +static const struct drm_connector_helper_funcs hdmi_connector_helper_funcs = { + .get_modes = hdmi_connector_get_modes, + .mode_valid = hdmi_connector_mode_valid, + .best_encoder = msm_connector_attached_encoder, +}; + +static void hdmi_connector_dpms(struct msm_connector *msm_connector, int mode) +{ + struct hdmi_connector *hdmi_connector = to_hdmi_connector(msm_connector); + struct hdmi *hdmi = &hdmi_connector->hdmi; + struct hdmi_phy *phy = hdmi->phy; + bool enabled = (mode == DRM_MODE_DPMS_ON); + + DBG("mode=%d", mode); + + if (enabled == hdmi_connector->enabled) + return; + + if (enabled) { + phy->funcs->powerup(phy, hdmi_connector->pixclock); + hdmi_set_mode(hdmi, true); + } else { + hdmi_set_mode(hdmi, false); + phy->funcs->powerdown(phy); + } + + hdmi_connector->enabled = enabled; +} + +static void hdmi_connector_mode_set(struct msm_connector *msm_connector, + struct drm_display_mode *mode) +{ + struct hdmi_connector *hdmi_connector = to_hdmi_connector(msm_connector); + struct hdmi *hdmi = &hdmi_connector->hdmi; + int hstart, hend, vstart, vend; + uint32_t frame_ctrl; + + hdmi_connector->pixclock = mode->clock * 1000; + + hdmi->hdmi_mode = drm_match_cea_mode(mode) > 1; + + hstart = mode->htotal - mode->hsync_start; + hend = mode->htotal - mode->hsync_start + mode->hdisplay; + + vstart = mode->vtotal - mode->vsync_start - 1; + vend = mode->vtotal - mode->vsync_start + mode->vdisplay - 1; + + DBG("htotal=%d, vtotal=%d, hstart=%d, hend=%d, vstart=%d, vend=%d", + mode->htotal, mode->vtotal, hstart, hend, vstart, vend); + + hdmi_write(hdmi, REG_HDMI_TOTAL, + HDMI_TOTAL_H_TOTAL(mode->htotal - 1) | + HDMI_TOTAL_V_TOTAL(mode->vtotal - 1)); + + hdmi_write(hdmi, REG_HDMI_ACTIVE_HSYNC, + HDMI_ACTIVE_HSYNC_START(hstart) | + HDMI_ACTIVE_HSYNC_END(hend)); + hdmi_write(hdmi, REG_HDMI_ACTIVE_VSYNC, + HDMI_ACTIVE_VSYNC_START(vstart) | + HDMI_ACTIVE_VSYNC_END(vend)); + + if (mode->flags & DRM_MODE_FLAG_INTERLACE) { + hdmi_write(hdmi, REG_HDMI_VSYNC_TOTAL_F2, + HDMI_VSYNC_TOTAL_F2_V_TOTAL(mode->vtotal)); + hdmi_write(hdmi, REG_HDMI_VSYNC_ACTIVE_F2, + HDMI_VSYNC_ACTIVE_F2_START(vstart + 1) | + HDMI_VSYNC_ACTIVE_F2_END(vend + 1)); + } else { + hdmi_write(hdmi, REG_HDMI_VSYNC_TOTAL_F2, + HDMI_VSYNC_TOTAL_F2_V_TOTAL(0)); + hdmi_write(hdmi, REG_HDMI_VSYNC_ACTIVE_F2, + HDMI_VSYNC_ACTIVE_F2_START(0) | + HDMI_VSYNC_ACTIVE_F2_END(0)); + } + + frame_ctrl = 0; + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + frame_ctrl |= HDMI_FRAME_CTRL_HSYNC_LOW; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + frame_ctrl |= HDMI_FRAME_CTRL_VSYNC_LOW; + if (mode->flags & DRM_MODE_FLAG_INTERLACE) + frame_ctrl |= HDMI_FRAME_CTRL_INTERLACED_EN; + DBG("frame_ctrl=%08x", frame_ctrl); + hdmi_write(hdmi, REG_HDMI_FRAME_CTRL, frame_ctrl); + + // TODO until we have audio, this might be safest: + if (hdmi->hdmi_mode) + hdmi_write(hdmi, REG_HDMI_GC, HDMI_GC_MUTE); +} + +static const struct msm_connector_funcs msm_connector_funcs = { + .dpms = hdmi_connector_dpms, + .mode_set = hdmi_connector_mode_set, +}; + +/* initialize connector */ +struct drm_connector *hdmi_connector_init(struct dr |