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OpenCloudOS-Kernel/drivers/gpu/drm/msm/hdmi/hdmi.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <drm/drm_bridge_connector.h>
#include <sound/hdmi-codec.h>
#include "hdmi.h"
void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
{
uint32_t ctrl = 0;
unsigned long flags;
spin_lock_irqsave(&hdmi->reg_lock, flags);
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);
spin_unlock_irqrestore(&hdmi->reg_lock, flags);
DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
power_on ? "Enable" : "Disable", ctrl);
}
static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
{
struct hdmi *hdmi = dev_id;
/* Process HPD: */
msm_hdmi_hpd_irq(hdmi->bridge);
/* Process DDC: */
msm_hdmi_i2c_irq(hdmi->i2c);
/* Process HDCP: */
if (hdmi->hdcp_ctrl)
msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
/* TODO audio.. */
return IRQ_HANDLED;
}
static void msm_hdmi_destroy(struct hdmi *hdmi)
{
/*
* at this point, hpd has been disabled,
* after flush workq, it's safe to deinit hdcp
*/
if (hdmi->workq)
destroy_workqueue(hdmi->workq);
msm_hdmi_hdcp_destroy(hdmi);
if (hdmi->phy_dev) {
put_device(hdmi->phy_dev);
hdmi->phy = NULL;
hdmi->phy_dev = NULL;
}
if (hdmi->i2c)
msm_hdmi_i2c_destroy(hdmi->i2c);
platform_set_drvdata(hdmi->pdev, NULL);
}
static int msm_hdmi_get_phy(struct hdmi *hdmi)
{
struct platform_device *pdev = hdmi->pdev;
struct platform_device *phy_pdev;
struct device_node *phy_node;
phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
if (!phy_node) {
DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
return -ENXIO;
}
phy_pdev = of_find_device_by_node(phy_node);
if (phy_pdev)
hdmi->phy = platform_get_drvdata(phy_pdev);
of_node_put(phy_node);
if (!phy_pdev) {
DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
return -EPROBE_DEFER;
}
if (!hdmi->phy) {
DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
put_device(&phy_pdev->dev);
return -EPROBE_DEFER;
}
hdmi->phy_dev = get_device(&phy_pdev->dev);
return 0;
}
/* 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 *msm_hdmi_init(struct platform_device *pdev)
{
struct hdmi_platform_config *config = pdev->dev.platform_data;
struct hdmi *hdmi = NULL;
struct resource *res;
int i, ret;
hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi) {
ret = -ENOMEM;
goto fail;
}
hdmi->pdev = pdev;
hdmi->config = config;
spin_lock_init(&hdmi->reg_lock);
hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
if (IS_ERR(hdmi->mmio)) {
ret = PTR_ERR(hdmi->mmio);
goto fail;
}
/* HDCP needs physical address of hdmi register */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
config->mmio_name);
hdmi->mmio_phy_addr = res->start;
hdmi->qfprom_mmio = msm_ioremap(pdev,
config->qfprom_mmio_name, "HDMI_QFPROM");
if (IS_ERR(hdmi->qfprom_mmio)) {
DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
hdmi->qfprom_mmio = NULL;
}
hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
config->hpd_reg_cnt,
sizeof(hdmi->hpd_regs[0]),
GFP_KERNEL);
if (!hdmi->hpd_regs) {
ret = -ENOMEM;
goto fail;
}
for (i = 0; i < config->hpd_reg_cnt; i++)
hdmi->hpd_regs[i].supply = config->hpd_reg_names[i];
ret = devm_regulator_bulk_get(&pdev->dev, config->hpd_reg_cnt, hdmi->hpd_regs);
if (ret) {
DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %d\n", ret);
goto fail;
}
hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
config->pwr_reg_cnt,
sizeof(hdmi->pwr_regs[0]),
GFP_KERNEL);
if (!hdmi->pwr_regs) {
ret = -ENOMEM;
goto fail;
}
ret = devm_regulator_bulk_get(&pdev->dev, config->pwr_reg_cnt, hdmi->pwr_regs);
if (ret) {
DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %d\n", ret);
goto fail;
}
hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
config->hpd_clk_cnt,
sizeof(hdmi->hpd_clks[0]),
GFP_KERNEL);
if (!hdmi->hpd_clks) {
ret = -ENOMEM;
goto fail;
}
for (i = 0; i < config->hpd_clk_cnt; i++) {
struct clk *clk;
clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
DRM_DEV_ERROR(&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_kcalloc(&pdev->dev,
config->pwr_clk_cnt,
sizeof(hdmi->pwr_clks[0]),
GFP_KERNEL);
if (!hdmi->pwr_clks) {
ret = -ENOMEM;
goto fail;
}
for (i = 0; i < config->pwr_clk_cnt; i++) {
struct clk *clk;
clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
DRM_DEV_ERROR(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
config->pwr_clk_names[i], ret);
goto fail;
}
hdmi->pwr_clks[i] = clk;
}
pm_runtime_enable(&pdev->dev);
hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
hdmi->i2c = msm_hdmi_i2c_init(hdmi);
if (IS_ERR(hdmi->i2c)) {
ret = PTR_ERR(hdmi->i2c);
DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
hdmi->i2c = NULL;
goto fail;
}
ret = msm_hdmi_get_phy(hdmi);
if (ret) {
DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
goto fail;
}
hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
if (IS_ERR(hdmi->hdcp_ctrl)) {
dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
hdmi->hdcp_ctrl = NULL;
}
return hdmi;
fail:
if (hdmi)
msm_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 msm_hdmi_init() so that failure happens from
* hdmi sub-device's probe.
*/
int msm_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 = msm_hdmi_bridge_init(hdmi);
if (IS_ERR(hdmi->bridge)) {
ret = PTR_ERR(hdmi->bridge);
DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
hdmi->bridge = NULL;
goto fail;
}
hdmi->connector = drm_bridge_connector_init(hdmi->dev, encoder);
if (IS_ERR(hdmi->connector)) {
ret = PTR_ERR(hdmi->connector);
DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
hdmi->connector = NULL;
goto fail;
}
drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
if (hdmi->irq < 0) {
ret = hdmi->irq;
DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
goto fail;
}
ret = devm_request_irq(&pdev->dev, hdmi->irq,
msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"hdmi_isr", hdmi);
if (ret < 0) {
DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
hdmi->irq, ret);
goto fail;
}
drm_bridge_connector_enable_hpd(hdmi->connector);
ret = msm_hdmi_hpd_enable(hdmi->bridge);
if (ret < 0) {
DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
goto fail;
}
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) {
msm_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:
*/
#define HDMI_CFG(item, entry) \
.item ## _names = item ##_names_ ## entry, \
.item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
static const char *pwr_reg_names_none[] = {};
static const char *hpd_reg_names_none[] = {};
static struct hdmi_platform_config hdmi_tx_8660_config;
static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
static struct hdmi_platform_config hdmi_tx_8960_config = {
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", "alt_iface"};
static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
static struct hdmi_platform_config hdmi_tx_8974_config = {
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 = {
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 struct hdmi_platform_config hdmi_tx_8994_config = {
HDMI_CFG(pwr_reg, 8x74),
HDMI_CFG(hpd_reg, none),
HDMI_CFG(pwr_clk, 8x74),
HDMI_CFG(hpd_clk, 8x74),
.hpd_freq = hpd_clk_freq_8x74,
};
static struct hdmi_platform_config hdmi_tx_8996_config = {
HDMI_CFG(pwr_reg, none),
HDMI_CFG(hpd_reg, none),
HDMI_CFG(pwr_clk, 8x74),
HDMI_CFG(hpd_clk, 8x74),
.hpd_freq = hpd_clk_freq_8x74,
};
static const struct {
const char *name;
const bool output;
const int value;
const char *label;
} msm_hdmi_gpio_pdata[] = {
{ "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
{ "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
{ "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
{ "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
{ "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
{ "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
};
/*
* HDMI audio codec callbacks
*/
static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
struct hdmi_codec_daifmt *daifmt,
struct hdmi_codec_params *params)
{
struct hdmi *hdmi = dev_get_drvdata(dev);
unsigned int chan;
unsigned int channel_allocation = 0;
unsigned int rate;
unsigned int level_shift = 0; /* 0dB */
bool down_mix = false;
DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
params->sample_width, params->cea.channels);
switch (params->cea.channels) {
case 2:
/* FR and FL speakers */
channel_allocation = 0;
chan = MSM_HDMI_AUDIO_CHANNEL_2;
break;
case 4:
/* FC, LFE, FR and FL speakers */
channel_allocation = 0x3;
chan = MSM_HDMI_AUDIO_CHANNEL_4;
break;
case 6:
/* RR, RL, FC, LFE, FR and FL speakers */
channel_allocation = 0x0B;
chan = MSM_HDMI_AUDIO_CHANNEL_6;
break;
case 8:
/* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
channel_allocation = 0x1F;
chan = MSM_HDMI_AUDIO_CHANNEL_8;
break;
default:
return -EINVAL;
}
switch (params->sample_rate) {
case 32000:
rate = HDMI_SAMPLE_RATE_32KHZ;
break;
case 44100:
rate = HDMI_SAMPLE_RATE_44_1KHZ;
break;
case 48000:
rate = HDMI_SAMPLE_RATE_48KHZ;
break;
case 88200:
rate = HDMI_SAMPLE_RATE_88_2KHZ;
break;
case 96000:
rate = HDMI_SAMPLE_RATE_96KHZ;
break;
case 176400:
rate = HDMI_SAMPLE_RATE_176_4KHZ;
break;
case 192000:
rate = HDMI_SAMPLE_RATE_192KHZ;
break;
default:
DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
params->sample_rate);
return -EINVAL;
}
msm_hdmi_audio_set_sample_rate(hdmi, rate);
msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
level_shift, down_mix);
return 0;
}
static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
{
struct hdmi *hdmi = dev_get_drvdata(dev);
msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
}
static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
.hw_params = msm_hdmi_audio_hw_params,
.audio_shutdown = msm_hdmi_audio_shutdown,
};
static struct hdmi_codec_pdata codec_data = {
.ops = &msm_hdmi_audio_codec_ops,
.max_i2s_channels = 8,
.i2s = 1,
};
static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
{
hdmi->audio_pdev = platform_device_register_data(dev,
HDMI_CODEC_DRV_NAME,
PLATFORM_DEVID_AUTO,
&codec_data,
sizeof(codec_data));
return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
}
static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
{
struct msm_drm_private *priv = dev_get_drvdata(master);
struct hdmi_platform_config *hdmi_cfg;
struct hdmi *hdmi;
struct device_node *of_node = dev->of_node;
int i, err;
hdmi_cfg = (struct hdmi_platform_config *)
of_device_get_match_data(dev);
if (!hdmi_cfg) {
DRM_DEV_ERROR(dev, "unknown hdmi_cfg: %pOFn\n", of_node);
return -ENXIO;
}
hdmi_cfg->mmio_name = "core_physical";
hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
const char *name = msm_hdmi_gpio_pdata[i].name;
struct gpio_desc *gpiod;
/*
* We are fetching the GPIO lines "as is" since the connector
* code is enabling and disabling the lines. Until that point
* the power-on default value will be kept.
*/
gpiod = devm_gpiod_get_optional(dev, name, GPIOD_ASIS);
/* This will catch e.g. -PROBE_DEFER */
if (IS_ERR(gpiod))
return PTR_ERR(gpiod);
if (!gpiod) {
/* Try a second time, stripping down the name */
char name3[32];
/*
* Try again after stripping out the "qcom,hdmi-tx"
* prefix. This is mainly to match "hpd-gpios" used
* in the upstream bindings.
*/
if (sscanf(name, "qcom,hdmi-tx-%s", name3))
gpiod = devm_gpiod_get_optional(dev, name3, GPIOD_ASIS);
if (IS_ERR(gpiod))
return PTR_ERR(gpiod);
if (!gpiod)
DBG("failed to get gpio: %s", name);
}
hdmi_cfg->gpios[i].gpiod = gpiod;
if (gpiod)
gpiod_set_consumer_name(gpiod, msm_hdmi_gpio_pdata[i].label);
hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
}
dev->platform_data = hdmi_cfg;
hdmi = msm_hdmi_init(to_platform_device(dev));
if (IS_ERR(hdmi))
return PTR_ERR(hdmi);
priv->hdmi = hdmi;
err = msm_hdmi_register_audio_driver(hdmi, dev);
if (err) {
DRM_ERROR("Failed to attach an audio codec %d\n", err);
hdmi->audio_pdev = NULL;
}
return 0;
}
static void msm_hdmi_unbind(struct device *dev, struct device *master,
void *data)
{
struct msm_drm_private *priv = dev_get_drvdata(master);
if (priv->hdmi) {
if (priv->hdmi->audio_pdev)
platform_device_unregister(priv->hdmi->audio_pdev);
msm_hdmi_destroy(priv->hdmi);
priv->hdmi = NULL;
}
}
static const struct component_ops msm_hdmi_ops = {
.bind = msm_hdmi_bind,
.unbind = msm_hdmi_unbind,
};
static int msm_hdmi_dev_probe(struct platform_device *pdev)
{
return component_add(&pdev->dev, &msm_hdmi_ops);
}
static int msm_hdmi_dev_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &msm_hdmi_ops);
return 0;
}
static const struct of_device_id msm_hdmi_dt_match[] = {
{ .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
{ .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
{ .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
{ .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
{ .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
{ .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
{}
};
static struct platform_driver msm_hdmi_driver = {
.probe = msm_hdmi_dev_probe,
.remove = msm_hdmi_dev_remove,
.driver = {
.name = "hdmi_msm",
.of_match_table = msm_hdmi_dt_match,
},
};
void __init msm_hdmi_register(void)
{
msm_hdmi_phy_driver_register();
platform_driver_register(&msm_hdmi_driver);
}
void __exit msm_hdmi_unregister(void)
{
platform_driver_unregister(&msm_hdmi_driver);
msm_hdmi_phy_driver_unregister();
}
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