linux/drivers/gpu/drm/msm/hdmi/hdmi.c

421 lines
11 KiB
C

/*
* 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;
}
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;
int get_gpio(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;
}
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("qcom,hdmi-tx-ddc-clk");
config.ddc_data_gpio = get_gpio("qcom,hdmi-tx-ddc-data");
config.hpd_gpio = get_gpio("qcom,hdmi-tx-hpd");
config.mux_en_gpio = get_gpio("qcom,hdmi-tx-mux-en");
config.mux_sel_gpio = get_gpio("qcom,hdmi-tx-mux-sel");
config.mux_lpm_gpio = get_gpio("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);
}