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OpenCloudOS-Kernel/drivers/gpu/drm/zte/zx_hdmi.c

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/*
* Copyright 2016 Linaro Ltd.
* Copyright 2016 ZTE Corporation.
*
* 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.
*
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/hdmi.h>
#include <linux/irq.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_of.h>
#include <drm/drmP.h>
#include <sound/hdmi-codec.h>
#include "zx_hdmi_regs.h"
#include "zx_vou.h"
#define ZX_HDMI_INFOFRAME_SIZE 31
#define DDC_SEGMENT_ADDR 0x30
struct zx_hdmi_i2c {
struct i2c_adapter adap;
struct mutex lock;
};
struct zx_hdmi {
struct drm_connector connector;
struct drm_encoder encoder;
struct zx_hdmi_i2c *ddc;
struct device *dev;
struct drm_device *drm;
void __iomem *mmio;
struct clk *cec_clk;
struct clk *osc_clk;
struct clk *xclk;
bool sink_is_hdmi;
bool sink_has_audio;
const struct vou_inf *inf;
struct platform_device *audio_pdev;
};
#define to_zx_hdmi(x) container_of(x, struct zx_hdmi, x)
static inline u8 hdmi_readb(struct zx_hdmi *hdmi, u16 offset)
{
return readl_relaxed(hdmi->mmio + offset * 4);
}
static inline void hdmi_writeb(struct zx_hdmi *hdmi, u16 offset, u8 val)
{
writel_relaxed(val, hdmi->mmio + offset * 4);
}
static inline void hdmi_writeb_mask(struct zx_hdmi *hdmi, u16 offset,
u8 mask, u8 val)
{
u8 tmp;
tmp = hdmi_readb(hdmi, offset);
tmp = (tmp & ~mask) | (val & mask);
hdmi_writeb(hdmi, offset, tmp);
}
static int zx_hdmi_infoframe_trans(struct zx_hdmi *hdmi,
union hdmi_infoframe *frame, u8 fsel)
{
u8 buffer[ZX_HDMI_INFOFRAME_SIZE];
int num;
int i;
hdmi_writeb(hdmi, TPI_INFO_FSEL, fsel);
num = hdmi_infoframe_pack(frame, buffer, ZX_HDMI_INFOFRAME_SIZE);
if (num < 0) {
DRM_DEV_ERROR(hdmi->dev, "failed to pack infoframe: %d\n", num);
return num;
}
for (i = 0; i < num; i++)
hdmi_writeb(hdmi, TPI_INFO_B0 + i, buffer[i]);
hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_RPT,
TPI_INFO_TRANS_RPT);
hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_EN,
TPI_INFO_TRANS_EN);
return num;
}
static int zx_hdmi_config_video_vsi(struct zx_hdmi *hdmi,
struct drm_display_mode *mode)
{
union hdmi_infoframe frame;
int ret;
ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
mode);
if (ret) {
DRM_DEV_ERROR(hdmi->dev, "failed to get vendor infoframe: %d\n",
ret);
return ret;
}
return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_VSIF);
}
static int zx_hdmi_config_video_avi(struct zx_hdmi *hdmi,
struct drm_display_mode *mode)
{
union hdmi_infoframe frame;
int ret;
ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
if (ret) {
DRM_DEV_ERROR(hdmi->dev, "failed to get avi infoframe: %d\n",
ret);
return ret;
}
/* We always use YUV444 for HDMI output. */
frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AVI);
}
static void zx_hdmi_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adj_mode)
{
struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
if (hdmi->sink_is_hdmi) {
zx_hdmi_config_video_avi(hdmi, mode);
zx_hdmi_config_video_vsi(hdmi, mode);
}
}
static void zx_hdmi_phy_start(struct zx_hdmi *hdmi)
{
/* Copy from ZTE BSP code */
hdmi_writeb(hdmi, 0x222, 0x0);
hdmi_writeb(hdmi, 0x224, 0x4);
hdmi_writeb(hdmi, 0x909, 0x0);
hdmi_writeb(hdmi, 0x7b0, 0x90);
hdmi_writeb(hdmi, 0x7b1, 0x00);
hdmi_writeb(hdmi, 0x7b2, 0xa7);
hdmi_writeb(hdmi, 0x7b8, 0xaa);
hdmi_writeb(hdmi, 0x7b2, 0xa7);
hdmi_writeb(hdmi, 0x7b3, 0x0f);
hdmi_writeb(hdmi, 0x7b4, 0x0f);
hdmi_writeb(hdmi, 0x7b5, 0x55);
hdmi_writeb(hdmi, 0x7b7, 0x03);
hdmi_writeb(hdmi, 0x7b9, 0x12);
hdmi_writeb(hdmi, 0x7ba, 0x32);
hdmi_writeb(hdmi, 0x7bc, 0x68);
hdmi_writeb(hdmi, 0x7be, 0x40);
hdmi_writeb(hdmi, 0x7bf, 0x84);
hdmi_writeb(hdmi, 0x7c1, 0x0f);
hdmi_writeb(hdmi, 0x7c8, 0x02);
hdmi_writeb(hdmi, 0x7c9, 0x03);
hdmi_writeb(hdmi, 0x7ca, 0x40);
hdmi_writeb(hdmi, 0x7dc, 0x31);
hdmi_writeb(hdmi, 0x7e2, 0x04);
hdmi_writeb(hdmi, 0x7e0, 0x06);
hdmi_writeb(hdmi, 0x7cb, 0x68);
hdmi_writeb(hdmi, 0x7f9, 0x02);
hdmi_writeb(hdmi, 0x7b6, 0x02);
hdmi_writeb(hdmi, 0x7f3, 0x0);
}
static void zx_hdmi_hw_enable(struct zx_hdmi *hdmi)
{
/* Enable pclk */
hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, CLKPWD_PDIDCK);
/* Enable HDMI for TX */
hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, FUNC_HDMI_EN);
/* Enable deep color packet */
hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
/* Enable HDMI/MHL mode for output */
hdmi_writeb_mask(hdmi, TEST_TXCTRL, TEST_TXCTRL_HDMI_MODE,
TEST_TXCTRL_HDMI_MODE);
/* Configure reg_qc_sel */
hdmi_writeb(hdmi, HDMICTL4, 0x3);
/* Enable interrupt */
hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT,
INTR1_MONITOR_DETECT);
/* Start up phy */
zx_hdmi_phy_start(hdmi);
}
static void zx_hdmi_hw_disable(struct zx_hdmi *hdmi)
{
/* Disable interrupt */
hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT, 0);
/* Disable deep color packet */
hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
/* Disable HDMI for TX */
hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, 0);
/* Disable pclk */
hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, 0);
}
static void zx_hdmi_encoder_enable(struct drm_encoder *encoder)
{
struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
clk_prepare_enable(hdmi->cec_clk);
clk_prepare_enable(hdmi->osc_clk);
clk_prepare_enable(hdmi->xclk);
zx_hdmi_hw_enable(hdmi);
vou_inf_enable(VOU_HDMI, encoder->crtc);
}
static void zx_hdmi_encoder_disable(struct drm_encoder *encoder)
{
struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
vou_inf_disable(VOU_HDMI, encoder->crtc);
zx_hdmi_hw_disable(hdmi);
clk_disable_unprepare(hdmi->xclk);
clk_disable_unprepare(hdmi->osc_clk);
clk_disable_unprepare(hdmi->cec_clk);
}
static const struct drm_encoder_helper_funcs zx_hdmi_encoder_helper_funcs = {
.enable = zx_hdmi_encoder_enable,
.disable = zx_hdmi_encoder_disable,
.mode_set = zx_hdmi_encoder_mode_set,
};
static const struct drm_encoder_funcs zx_hdmi_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
static int zx_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct zx_hdmi *hdmi = to_zx_hdmi(connector);
struct edid *edid;
int ret;
edid = drm_get_edid(connector, &hdmi->ddc->adap);
if (!edid)
return 0;
hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
drm_mode_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
return ret;
}
static enum drm_mode_status
zx_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
return MODE_OK;
}
static struct drm_connector_helper_funcs zx_hdmi_connector_helper_funcs = {
.get_modes = zx_hdmi_connector_get_modes,
.mode_valid = zx_hdmi_connector_mode_valid,
};
static enum drm_connector_status
zx_hdmi_connector_detect(struct drm_connector *connector, bool force)
{
struct zx_hdmi *hdmi = to_zx_hdmi(connector);
return (hdmi_readb(hdmi, TPI_HPD_RSEN) & TPI_HPD_CONNECTION) ?
connector_status_connected : connector_status_disconnected;
}
static const struct drm_connector_funcs zx_hdmi_connector_funcs = {
.dpms = drm_atomic_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = zx_hdmi_connector_detect,
.destroy = drm_connector_cleanup,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int zx_hdmi_register(struct drm_device *drm, struct zx_hdmi *hdmi)
{
struct drm_encoder *encoder = &hdmi->encoder;
encoder->possible_crtcs = VOU_CRTC_MASK;
drm_encoder_init(drm, encoder, &zx_hdmi_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
drm_encoder_helper_add(encoder, &zx_hdmi_encoder_helper_funcs);
hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
drm_connector_init(drm, &hdmi->connector, &zx_hdmi_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA);
drm_connector_helper_add(&hdmi->connector,
&zx_hdmi_connector_helper_funcs);
drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
return 0;
}
static irqreturn_t zx_hdmi_irq_thread(int irq, void *dev_id)
{
struct zx_hdmi *hdmi = dev_id;
drm_helper_hpd_irq_event(hdmi->connector.dev);
return IRQ_HANDLED;
}
static irqreturn_t zx_hdmi_irq_handler(int irq, void *dev_id)
{
struct zx_hdmi *hdmi = dev_id;
u8 lstat;
lstat = hdmi_readb(hdmi, L1_INTR_STAT);
/* Monitor detect/HPD interrupt */
if (lstat & L1_INTR_STAT_INTR1) {
u8 stat;
stat = hdmi_readb(hdmi, INTR1_STAT);
hdmi_writeb(hdmi, INTR1_STAT, stat);
if (stat & INTR1_MONITOR_DETECT)
return IRQ_WAKE_THREAD;
}
return IRQ_NONE;
}
static int zx_hdmi_audio_startup(struct device *dev, void *data)
{
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
struct drm_encoder *encoder = &hdmi->encoder;
vou_inf_hdmi_audio_sel(encoder->crtc, VOU_HDMI_AUD_SPDIF);
return 0;
}
static void zx_hdmi_audio_shutdown(struct device *dev, void *data)
{
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
/* Disable audio input */
hdmi_writeb_mask(hdmi, AUD_EN, AUD_IN_EN, 0);
}
static inline int zx_hdmi_audio_get_n(unsigned int fs)
{
unsigned int n;
if (fs && (fs % 44100) == 0)
n = 6272 * (fs / 44100);
else
n = fs * 128 / 1000;
return n;
}
static int zx_hdmi_audio_hw_params(struct device *dev,
void *data,
struct hdmi_codec_daifmt *daifmt,
struct hdmi_codec_params *params)
{
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
struct hdmi_audio_infoframe *cea = &params->cea;
union hdmi_infoframe frame;
int n;
/* We only support spdif for now */
if (daifmt->fmt != HDMI_SPDIF) {
DRM_DEV_ERROR(hdmi->dev, "invalid daifmt %d\n", daifmt->fmt);
return -EINVAL;
}
switch (params->sample_width) {
case 16:
hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
SPDIF_SAMPLE_SIZE_16BIT);
break;
case 20:
hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
SPDIF_SAMPLE_SIZE_20BIT);
break;
case 24:
hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
SPDIF_SAMPLE_SIZE_24BIT);
break;
default:
DRM_DEV_ERROR(hdmi->dev, "invalid sample width %d\n",
params->sample_width);
return -EINVAL;
}
/* CTS is calculated by hardware, and we only need to take care of N */
n = zx_hdmi_audio_get_n(params->sample_rate);
hdmi_writeb(hdmi, N_SVAL1, n & 0xff);
hdmi_writeb(hdmi, N_SVAL2, (n >> 8) & 0xff);
hdmi_writeb(hdmi, N_SVAL3, (n >> 16) & 0xf);
/* Enable spdif mode */
hdmi_writeb_mask(hdmi, AUD_MODE, SPDIF_EN, SPDIF_EN);
/* Enable audio input */
hdmi_writeb_mask(hdmi, AUD_EN, AUD_IN_EN, AUD_IN_EN);
memcpy(&frame.audio, cea, sizeof(*cea));
return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AUDIO);
}
static int zx_hdmi_audio_digital_mute(struct device *dev, void *data,
bool enable)
{
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
if (enable)
hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, TPI_AUD_MUTE,
TPI_AUD_MUTE);
else
hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, TPI_AUD_MUTE, 0);
return 0;
}
static int zx_hdmi_audio_get_eld(struct device *dev, void *data,
uint8_t *buf, size_t len)
{
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
struct drm_connector *connector = &hdmi->connector;
memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
return 0;
}
static const struct hdmi_codec_ops zx_hdmi_codec_ops = {
.audio_startup = zx_hdmi_audio_startup,
.hw_params = zx_hdmi_audio_hw_params,
.audio_shutdown = zx_hdmi_audio_shutdown,
.digital_mute = zx_hdmi_audio_digital_mute,
.get_eld = zx_hdmi_audio_get_eld,
};
static struct hdmi_codec_pdata zx_hdmi_codec_pdata = {
.ops = &zx_hdmi_codec_ops,
.spdif = 1,
};
static int zx_hdmi_audio_register(struct zx_hdmi *hdmi)
{
struct platform_device *pdev;
pdev = platform_device_register_data(hdmi->dev, HDMI_CODEC_DRV_NAME,
PLATFORM_DEVID_AUTO,
&zx_hdmi_codec_pdata,
sizeof(zx_hdmi_codec_pdata));
if (IS_ERR(pdev))
return PTR_ERR(pdev);
hdmi->audio_pdev = pdev;
return 0;
}
static int zx_hdmi_i2c_read(struct zx_hdmi *hdmi, struct i2c_msg *msg)
{
int len = msg->len;
u8 *buf = msg->buf;
int retry = 0;
int ret = 0;
/* Bits [9:8] of bytes */
hdmi_writeb(hdmi, ZX_DDC_DIN_CNT2, (len >> 8) & 0xff);
/* Bits [7:0] of bytes */
hdmi_writeb(hdmi, ZX_DDC_DIN_CNT1, len & 0xff);
/* Clear FIFO */
hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK, DDC_CMD_CLEAR_FIFO);
/* Kick off the read */
hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK,
DDC_CMD_SEQUENTIAL_READ);
while (len > 0) {
int cnt, i;
/* FIFO needs some time to get ready */
usleep_range(500, 1000);
cnt = hdmi_readb(hdmi, ZX_DDC_DOUT_CNT) & DDC_DOUT_CNT_MASK;
if (cnt == 0) {
if (++retry > 5) {
DRM_DEV_ERROR(hdmi->dev,
"DDC FIFO read timed out!");
return -ETIMEDOUT;
}
continue;
}
for (i = 0; i < cnt; i++)
*buf++ = hdmi_readb(hdmi, ZX_DDC_DATA);
len -= cnt;
}
return ret;
}
static int zx_hdmi_i2c_write(struct zx_hdmi *hdmi, struct i2c_msg *msg)
{
/*
* The DDC I2C adapter is only for reading EDID data, so we assume
* that the write to this adapter must be the EDID data offset.
*/
if ((msg->len != 1) ||
((msg->addr != DDC_ADDR) && (msg->addr != DDC_SEGMENT_ADDR)))
return -EINVAL;
if (msg->addr == DDC_SEGMENT_ADDR)
hdmi_writeb(hdmi, ZX_DDC_SEGM, msg->addr << 1);
else if (msg->addr == DDC_ADDR)
hdmi_writeb(hdmi, ZX_DDC_ADDR, msg->addr << 1);
hdmi_writeb(hdmi, ZX_DDC_OFFSET, msg->buf[0]);
return 0;
}
static int zx_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
int num)
{
struct zx_hdmi *hdmi = i2c_get_adapdata(adap);
struct zx_hdmi_i2c *ddc = hdmi->ddc;
int i, ret = 0;
mutex_lock(&ddc->lock);
/* Enable DDC master access */
hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, HW_DDC_MASTER);
for (i = 0; i < num; i++) {
DRM_DEV_DEBUG(hdmi->dev,
"xfer: num: %d/%d, len: %d, flags: %#x\n",
i + 1, num, msgs[i].len, msgs[i].flags);
if (msgs[i].flags & I2C_M_RD)
ret = zx_hdmi_i2c_read(hdmi, &msgs[i]);
else
ret = zx_hdmi_i2c_write(hdmi, &msgs[i]);
if (ret < 0)
break;
}
if (!ret)
ret = num;
/* Disable DDC master access */
hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, 0);
mutex_unlock(&ddc->lock);
return ret;
}
static u32 zx_hdmi_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm zx_hdmi_algorithm = {
.master_xfer = zx_hdmi_i2c_xfer,
.functionality = zx_hdmi_i2c_func,
};
static int zx_hdmi_ddc_register(struct zx_hdmi *hdmi)
{
struct i2c_adapter *adap;
struct zx_hdmi_i2c *ddc;
int ret;
ddc = devm_kzalloc(hdmi->dev, sizeof(*ddc), GFP_KERNEL);
if (!ddc)
return -ENOMEM;
hdmi->ddc = ddc;
mutex_init(&ddc->lock);
adap = &ddc->adap;
adap->owner = THIS_MODULE;
adap->class = I2C_CLASS_DDC;
adap->dev.parent = hdmi->dev;
adap->algo = &zx_hdmi_algorithm;
snprintf(adap->name, sizeof(adap->name), "zx hdmi i2c");
ret = i2c_add_adapter(adap);
if (ret) {
DRM_DEV_ERROR(hdmi->dev, "failed to add I2C adapter: %d\n",
ret);
return ret;
}
i2c_set_adapdata(adap, hdmi);
return 0;
}
static int zx_hdmi_bind(struct device *dev, struct device *master, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = data;
struct resource *res;
struct zx_hdmi *hdmi;
int irq;
int ret;
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
hdmi->dev = dev;
hdmi->drm = drm;
dev_set_drvdata(dev, hdmi);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hdmi->mmio = devm_ioremap_resource(dev, res);
if (IS_ERR(hdmi->mmio)) {
ret = PTR_ERR(hdmi->mmio);
DRM_DEV_ERROR(dev, "failed to remap hdmi region: %d\n", ret);
return ret;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
hdmi->cec_clk = devm_clk_get(hdmi->dev, "osc_cec");
if (IS_ERR(hdmi->cec_clk)) {
ret = PTR_ERR(hdmi->cec_clk);
DRM_DEV_ERROR(dev, "failed to get cec_clk: %d\n", ret);
return ret;
}
hdmi->osc_clk = devm_clk_get(hdmi->dev, "osc_clk");
if (IS_ERR(hdmi->osc_clk)) {
ret = PTR_ERR(hdmi->osc_clk);
DRM_DEV_ERROR(dev, "failed to get osc_clk: %d\n", ret);
return ret;
}
hdmi->xclk = devm_clk_get(hdmi->dev, "xclk");
if (IS_ERR(hdmi->xclk)) {
ret = PTR_ERR(hdmi->xclk);
DRM_DEV_ERROR(dev, "failed to get xclk: %d\n", ret);
return ret;
}
ret = zx_hdmi_ddc_register(hdmi);
if (ret) {
DRM_DEV_ERROR(dev, "failed to register ddc: %d\n", ret);
return ret;
}
ret = zx_hdmi_audio_register(hdmi);
if (ret) {
DRM_DEV_ERROR(dev, "failed to register audio: %d\n", ret);
return ret;
}
ret = zx_hdmi_register(drm, hdmi);
if (ret) {
DRM_DEV_ERROR(dev, "failed to register hdmi: %d\n", ret);
return ret;
}
ret = devm_request_threaded_irq(dev, irq, zx_hdmi_irq_handler,
zx_hdmi_irq_thread, IRQF_SHARED,
dev_name(dev), hdmi);
if (ret) {
DRM_DEV_ERROR(dev, "failed to request threaded irq: %d\n", ret);
return ret;
}
return 0;
}
static void zx_hdmi_unbind(struct device *dev, struct device *master,
void *data)
{
struct zx_hdmi *hdmi = dev_get_drvdata(dev);
hdmi->connector.funcs->destroy(&hdmi->connector);
hdmi->encoder.funcs->destroy(&hdmi->encoder);
if (hdmi->audio_pdev)
platform_device_unregister(hdmi->audio_pdev);
}
static const struct component_ops zx_hdmi_component_ops = {
.bind = zx_hdmi_bind,
.unbind = zx_hdmi_unbind,
};
static int zx_hdmi_probe(struct platform_device *pdev)
{
return component_add(&pdev->dev, &zx_hdmi_component_ops);
}
static int zx_hdmi_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &zx_hdmi_component_ops);
return 0;
}
static const struct of_device_id zx_hdmi_of_match[] = {
{ .compatible = "zte,zx296718-hdmi", },
{ /* end */ },
};
MODULE_DEVICE_TABLE(of, zx_hdmi_of_match);
struct platform_driver zx_hdmi_driver = {
.probe = zx_hdmi_probe,
.remove = zx_hdmi_remove,
.driver = {
.name = "zx-hdmi",
.of_match_table = zx_hdmi_of_match,
},
};
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