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drm/rockchip: inno-hdmi: Convert to drm bridge

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Convert it to drm bridge driver, it will be convenient for us to
migrate the connector part to the display driver later.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20251016083843.76675-2-andyshrk@163.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Andy Yan 2025-10-16 16:38:31 +08:00 committed by Dmitry Baryshkov
parent c08c123d4c
commit 969325a259
7 changed files with 368 additions and 369 deletions
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7
drivers/gpu/drm/bridge/Kconfig
View File

@ -100,6 +100,13 @@ config DRM_I2C_NXP_TDA998X
help
Support for NXP Semiconductors TDA998X HDMI encoders.
config DRM_INNO_HDMI
tristate
select DRM_BRIDGE_CONNECTOR
select DRM_DISPLAY_HDMI_HELPER
select DRM_DISPLAY_HELPER
select DRM_KMS_HELPER
config DRM_ITE_IT6263
tristate "ITE IT6263 LVDS/HDMI bridge"
depends on OF

1
drivers/gpu/drm/bridge/Makefile
View File

@ -10,6 +10,7 @@ obj-$(CONFIG_DRM_FSL_LDB) += fsl-ldb.o
tda998x-y := tda998x_drv.o
obj-$(CONFIG_DRM_I2C_NXP_TDA998X) += tda998x.o
obj-$(CONFIG_DRM_INNO_HDMI) += inno-hdmi.o
obj-$(CONFIG_DRM_ITE_IT6263) += ite-it6263.o
obj-$(CONFIG_DRM_ITE_IT6505) += ite-it6505.o
obj-$(CONFIG_DRM_LONTIUM_LT8912B) += lontium-lt8912b.o

504
drivers/gpu/drm/rockchip/inno_hdmi.c → drivers/gpu/drm/bridge/inno-hdmi.c
View File

@ -3,14 +3,15 @@
* Copyright (C) Rockchip Electronics Co., Ltd.
* Zheng Yang <zhengyang@rock-chips.com>
* Yakir Yang <ykk@rock-chips.com>
* Andy Yan <andyshrk@163.com>
*/
#include <linux/irq.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/hdmi.h>
#include <linux/hw_bitfield.h>
#include <linux/mfd/syscon.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
@ -18,6 +19,7 @@
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <drm/bridge/inno_hdmi.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_edid.h>
@ -29,8 +31,6 @@
#include <drm/display/drm_hdmi_helper.h>
#include <drm/display/drm_hdmi_state_helper.h>
#include "rockchip_drm_drv.h"
#define INNO_HDMI_MIN_TMDS_CLOCK 25000000U
#define DDC_SEGMENT_ADDR 0x30
@ -384,27 +384,6 @@ enum {
#define HDMI_CEC_BUSFREETIME_H 0xdd
#define HDMI_CEC_LOGICADDR 0xde
#define RK3036_GRF_SOC_CON2 0x148
#define RK3036_HDMI_PHSYNC BIT(4)
#define RK3036_HDMI_PVSYNC BIT(5)
enum inno_hdmi_dev_type {
RK3036_HDMI,
RK3128_HDMI,
};
struct inno_hdmi_phy_config {
unsigned long pixelclock;
u8 pre_emphasis;
u8 voltage_level_control;
};
struct inno_hdmi_variant {
enum inno_hdmi_dev_type dev_type;
struct inno_hdmi_phy_config *phy_configs;
struct inno_hdmi_phy_config *default_phy_config;
};
struct inno_hdmi_i2c {
struct i2c_adapter adap;
@ -417,41 +396,17 @@ struct inno_hdmi_i2c {
struct inno_hdmi {
struct device *dev;
struct drm_bridge bridge;
struct clk *pclk;
struct clk *refclk;
void __iomem *regs;
struct regmap *grf;
struct drm_connector connector;
struct rockchip_encoder encoder;
struct inno_hdmi_i2c *i2c;
struct i2c_adapter *ddc;
const struct inno_hdmi_variant *variant;
const struct inno_hdmi_plat_data *plat_data;
};
struct inno_hdmi_connector_state {
struct drm_connector_state base;
unsigned int colorimetry;
};
static struct inno_hdmi *encoder_to_inno_hdmi(struct drm_encoder *encoder)
{
struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);
return container_of(rkencoder, struct inno_hdmi, encoder);
}
static struct inno_hdmi *connector_to_inno_hdmi(struct drm_connector *connector)
{
return container_of(connector, struct inno_hdmi, connector);
}
#define to_inno_hdmi_conn_state(conn_state) \
container_of_const(conn_state, struct inno_hdmi_connector_state, base)
enum {
CSC_RGB_0_255_TO_ITU601_16_235_8BIT,
CSC_RGB_0_255_TO_ITU709_16_235_8BIT,
@ -494,23 +449,15 @@ static const char coeff_csc[][24] = {
},
};
static struct inno_hdmi_phy_config rk3036_hdmi_phy_configs[] = {
{ 74250000, 0x3f, 0xbb },
{ 165000000, 0x6f, 0xbb },
{ ~0UL, 0x00, 0x00 }
};
static struct inno_hdmi_phy_config rk3128_hdmi_phy_configs[] = {
{ 74250000, 0x3f, 0xaa },
{ 165000000, 0x5f, 0xaa },
{ ~0UL, 0x00, 0x00 }
};
static struct inno_hdmi *bridge_to_inno_hdmi(struct drm_bridge *bridge)
{
return container_of(bridge, struct inno_hdmi, bridge);
}
static int inno_hdmi_find_phy_config(struct inno_hdmi *hdmi,
unsigned long pixelclk)
{
const struct inno_hdmi_phy_config *phy_configs =
hdmi->variant->phy_configs;
const struct inno_hdmi_phy_config *phy_configs = hdmi->plat_data->phy_configs;
int i;
for (i = 0; phy_configs[i].pixelclock != ~0UL; i++) {
@ -582,12 +529,12 @@ static void inno_hdmi_power_up(struct inno_hdmi *hdmi,
int ret = inno_hdmi_find_phy_config(hdmi, mpixelclock);
if (ret < 0) {
phy_config = hdmi->variant->default_phy_config;
phy_config = hdmi->plat_data->default_phy_config;
DRM_DEV_ERROR(hdmi->dev,
"Using default phy configuration for TMDS rate %lu",
mpixelclock);
} else {
phy_config = &hdmi->variant->phy_configs[ret];
phy_config = &hdmi->plat_data->phy_configs[ret];
}
inno_hdmi_sys_power(hdmi, false);
@ -637,14 +584,13 @@ static void inno_hdmi_init_hw(struct inno_hdmi *hdmi)
hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1));
}
static int inno_hdmi_disable_frame(struct drm_connector *connector,
enum hdmi_infoframe_type type)
static int inno_hdmi_bridge_clear_infoframe(struct drm_bridge *bridge,
enum hdmi_infoframe_type type)
{
struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
if (type != HDMI_INFOFRAME_TYPE_AVI) {
drm_err(connector->dev,
"Unsupported infoframe type: %u\n", type);
drm_err(bridge->dev, "Unsupported infoframe type: %u\n", type);
return 0;
}
@ -653,20 +599,19 @@ static int inno_hdmi_disable_frame(struct drm_connector *connector,
return 0;
}
static int inno_hdmi_upload_frame(struct drm_connector *connector,
enum hdmi_infoframe_type type,
const u8 *buffer, size_t len)
static int inno_hdmi_bridge_write_infoframe(struct drm_bridge *bridge,
enum hdmi_infoframe_type type,
const u8 *buffer, size_t len)
{
struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
ssize_t i;
if (type != HDMI_INFOFRAME_TYPE_AVI) {
drm_err(connector->dev,
"Unsupported infoframe type: %u\n", type);
drm_err(bridge->dev, "Unsupported infoframe type: %u\n", type);
return 0;
}
inno_hdmi_disable_frame(connector, type);
inno_hdmi_bridge_clear_infoframe(bridge, type);
for (i = 0; i < len; i++)
hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i, buffer[i]);
@ -674,23 +619,26 @@ static int inno_hdmi_upload_frame(struct drm_connector *connector,
return 0;
}
static const struct drm_connector_hdmi_funcs inno_hdmi_hdmi_connector_funcs = {
.clear_infoframe = inno_hdmi_disable_frame,
.write_infoframe = inno_hdmi_upload_frame,
};
static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi,
struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct drm_connector *connector = &hdmi->connector;
struct drm_connector_state *conn_state = connector->state;
struct inno_hdmi_connector_state *inno_conn_state =
to_inno_hdmi_conn_state(conn_state);
int c0_c2_change = 0;
int csc_enable = 0;
int csc_mode = 0;
int auto_csc = 0;
int value;
int i;
int colorimetry;
u8 vic = drm_match_cea_mode(mode);
if (vic == 6 || vic == 7 || vic == 21 || vic == 22 ||
vic == 2 || vic == 3 || vic == 17 || vic == 18)
colorimetry = HDMI_COLORIMETRY_ITU_601;
else
colorimetry = HDMI_COLORIMETRY_ITU_709;
/* Input video mode is SDR RGB24bit, data enable signal from external */
hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL1, v_DE_EXTERNAL |
@ -720,7 +668,7 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
return 0;
}
} else {
if (inno_conn_state->colorimetry == HDMI_COLORIMETRY_ITU_601) {
if (colorimetry == HDMI_COLORIMETRY_ITU_601) {
if (conn_state->hdmi.output_format == HDMI_COLORSPACE_YUV444) {
csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
@ -738,8 +686,7 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
}
for (i = 0; i < 24; i++)
hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i,
coeff_csc[csc_mode][i]);
hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i, coeff_csc[csc_mode][i]);
value = v_SOF_DISABLE | csc_enable | v_COLOR_DEPTH_NOT_INDICATED(1);
hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
@ -753,15 +700,11 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
struct drm_display_mode *mode)
{
int value, psync;
const struct inno_hdmi_plat_ops *plat_ops = hdmi->plat_data->ops;
u32 value;
if (hdmi->variant->dev_type == RK3036_HDMI) {
psync = mode->flags & DRM_MODE_FLAG_PHSYNC ? 1 : 0;
value = FIELD_PREP_WM16(RK3036_HDMI_PHSYNC, psync);
psync = mode->flags & DRM_MODE_FLAG_PVSYNC ? 1 : 0;
value |= FIELD_PREP_WM16(RK3036_HDMI_PVSYNC, psync);
regmap_write(hdmi->grf, RK3036_GRF_SOC_CON2, value);
}
if (plat_ops && plat_ops->enable)
plat_ops->enable(hdmi->dev, mode);
/* Set detail external video timing polarity and interlace mode */
value = v_EXTERANL_VIDEO(1);
@ -810,14 +753,16 @@ static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
return 0;
}
static int inno_hdmi_setup(struct inno_hdmi *hdmi,
struct drm_atomic_state *state)
static int inno_hdmi_setup(struct inno_hdmi *hdmi, struct drm_atomic_state *state)
{
struct drm_connector *connector = &hdmi->connector;
struct drm_display_info *display = &connector->display_info;
struct drm_bridge *bridge = &hdmi->bridge;
struct drm_connector *connector;
struct drm_display_info *info;
struct drm_connector_state *new_conn_state;
struct drm_crtc_state *new_crtc_state;
connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
new_conn_state = drm_atomic_get_new_connector_state(state, connector);
if (WARN_ON(!new_conn_state))
return -EINVAL;
@ -826,17 +771,18 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
if (WARN_ON(!new_crtc_state))
return -EINVAL;
info = &connector->display_info;
/* Mute video and audio output */
hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1));
/* Set HDMI Mode */
hdmi_writeb(hdmi, HDMI_HDCP_CTRL,
v_HDMI_DVI(display->is_hdmi));
hdmi_writeb(hdmi, HDMI_HDCP_CTRL, v_HDMI_DVI(info->is_hdmi));
inno_hdmi_config_video_timing(hdmi, &new_crtc_state->adjusted_mode);
inno_hdmi_config_video_csc(hdmi);
inno_hdmi_config_video_csc(hdmi, connector, &new_crtc_state->adjusted_mode);
drm_atomic_helper_connector_hdmi_update_infoframes(connector, state);
@ -857,9 +803,11 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
return 0;
}
static enum drm_mode_status inno_hdmi_display_mode_valid(struct inno_hdmi *hdmi,
const struct drm_display_mode *mode)
static enum drm_mode_status inno_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_info *info,
const struct drm_display_mode *mode)
{
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
unsigned long mpixelclk, max_tolerance;
long rounded_refclk;
@ -889,189 +837,57 @@ static enum drm_mode_status inno_hdmi_display_mode_valid(struct inno_hdmi *hdmi,
return MODE_OK;
}
static void inno_hdmi_encoder_enable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder);
inno_hdmi_setup(hdmi, state);
}
static void inno_hdmi_encoder_disable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder);
inno_hdmi_standby(hdmi);
}
static int
inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
struct drm_display_mode *mode = &crtc_state->adjusted_mode;
u8 vic = drm_match_cea_mode(mode);
struct inno_hdmi_connector_state *inno_conn_state =
to_inno_hdmi_conn_state(conn_state);
s->output_mode = ROCKCHIP_OUT_MODE_P888;
s->output_type = DRM_MODE_CONNECTOR_HDMIA;
if (vic == 6 || vic == 7 ||
vic == 21 || vic == 22 ||
vic == 2 || vic == 3 ||
vic == 17 || vic == 18)
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_601;
else
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
return 0;
}
static const struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
.atomic_check = inno_hdmi_encoder_atomic_check,
.atomic_enable = inno_hdmi_encoder_enable,
.atomic_disable = inno_hdmi_encoder_disable,
};
static enum drm_connector_status
inno_hdmi_connector_detect(struct drm_connector *connector, bool force)
inno_hdmi_bridge_detect(struct drm_bridge *bridge, struct drm_connector *connector)
{
struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
return (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ?
connector_status_connected : connector_status_disconnected;
}
static int inno_hdmi_connector_get_modes(struct drm_connector *connector)
static const struct drm_edid *
inno_hdmi_bridge_edid_read(struct drm_bridge *bridge, struct drm_connector *connector)
{
struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
const struct drm_edid *drm_edid;
int ret = 0;
if (!hdmi->ddc)
return 0;
drm_edid = drm_edid_read_ddc(connector, bridge->ddc);
if (!drm_edid)
dev_dbg(hdmi->dev, "failed to get edid\n");
drm_edid = drm_edid_read_ddc(connector, hdmi->ddc);
drm_edid_connector_update(connector, drm_edid);
ret = drm_edid_connector_add_modes(connector);
drm_edid_free(drm_edid);
return ret;
return drm_edid;
}
static enum drm_mode_status
inno_hdmi_connector_mode_valid(struct drm_connector *connector,
const struct drm_display_mode *mode)
static void inno_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
return inno_hdmi_display_mode_valid(hdmi, mode);
inno_hdmi_setup(hdmi, state);
}
static void
inno_hdmi_connector_destroy_state(struct drm_connector *connector,
struct drm_connector_state *state)
static void inno_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct inno_hdmi_connector_state *inno_conn_state =
to_inno_hdmi_conn_state(state);
struct inno_hdmi *hdmi = bridge_to_inno_hdmi(bridge);
__drm_atomic_helper_connector_destroy_state(&inno_conn_state->base);
kfree(inno_conn_state);
inno_hdmi_standby(hdmi);
}
static void inno_hdmi_connector_reset(struct drm_connector *connector)
{
struct inno_hdmi_connector_state *inno_conn_state;
if (connector->state) {
inno_hdmi_connector_destroy_state(connector, connector->state);
connector->state = NULL;
}
inno_conn_state = kzalloc(sizeof(*inno_conn_state), GFP_KERNEL);
if (!inno_conn_state)
return;
__drm_atomic_helper_connector_reset(connector, &inno_conn_state->base);
__drm_atomic_helper_connector_hdmi_reset(connector, connector->state);
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
}
static struct drm_connector_state *
inno_hdmi_connector_duplicate_state(struct drm_connector *connector)
{
struct inno_hdmi_connector_state *inno_conn_state;
if (WARN_ON(!connector->state))
return NULL;
inno_conn_state = kmemdup(to_inno_hdmi_conn_state(connector->state),
sizeof(*inno_conn_state), GFP_KERNEL);
if (!inno_conn_state)
return NULL;
__drm_atomic_helper_connector_duplicate_state(connector,
&inno_conn_state->base);
return &inno_conn_state->base;
}
static const struct drm_connector_funcs inno_hdmi_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = inno_hdmi_connector_detect,
.reset = inno_hdmi_connector_reset,
.atomic_duplicate_state = inno_hdmi_connector_duplicate_state,
.atomic_destroy_state = inno_hdmi_connector_destroy_state,
static const struct drm_bridge_funcs inno_hdmi_bridge_funcs = {
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_enable = inno_hdmi_bridge_atomic_enable,
.atomic_disable = inno_hdmi_bridge_atomic_disable,
.detect = inno_hdmi_bridge_detect,
.edid_read = inno_hdmi_bridge_edid_read,
.hdmi_clear_infoframe = inno_hdmi_bridge_clear_infoframe,
.hdmi_write_infoframe = inno_hdmi_bridge_write_infoframe,
.mode_valid = inno_hdmi_bridge_mode_valid,
};
static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = {
.atomic_check = drm_atomic_helper_connector_hdmi_check,
.get_modes = inno_hdmi_connector_get_modes,
.mode_valid = inno_hdmi_connector_mode_valid,
};
static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
{
struct drm_encoder *encoder = &hdmi->encoder.encoder;
struct device *dev = hdmi->dev;
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
/*
* If we failed to find the CRTC(s) which this encoder is
* supposed to be connected to, it's because the CRTC has
* not been registered yet. Defer probing, and hope that
* the required CRTC is added later.
*/
if (encoder->possible_crtcs == 0)
return -EPROBE_DEFER;
drm_encoder_helper_add(encoder, &inno_hdmi_encoder_helper_funcs);
drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
drm_connector_helper_add(&hdmi->connector,
&inno_hdmi_connector_helper_funcs);
drmm_connector_hdmi_init(drm, &hdmi->connector,
"Rockchip", "Inno HDMI",
&inno_hdmi_connector_funcs,
&inno_hdmi_hdmi_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA,
hdmi->ddc,
BIT(HDMI_COLORSPACE_RGB),
8);
drm_connector_attach_encoder(&hdmi->connector, encoder);
return 0;
}
static irqreturn_t inno_hdmi_i2c_irq(struct inno_hdmi *hdmi)
{
struct inno_hdmi_i2c *i2c = hdmi->i2c;
@ -1111,7 +927,7 @@ static irqreturn_t inno_hdmi_irq(int irq, void *dev_id)
{
struct inno_hdmi *hdmi = dev_id;
drm_helper_hpd_irq_event(hdmi->connector.dev);
drm_helper_hpd_irq_event(hdmi->bridge.dev);
return IRQ_HANDLED;
}
@ -1243,128 +1059,80 @@ static struct i2c_adapter *inno_hdmi_i2c_adapter(struct inno_hdmi *hdmi)
return adap;
}
static int inno_hdmi_bind(struct device *dev, struct device *master,
void *data)
struct inno_hdmi *inno_hdmi_bind(struct device *dev,
struct drm_encoder *encoder,
const struct inno_hdmi_plat_data *plat_data)
{
struct platform_device *pdev = to_platform_device(dev);
struct drm_device *drm = data;
struct inno_hdmi *hdmi;
const struct inno_hdmi_variant *variant;
int irq;
int ret;
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
if (!plat_data->phy_configs || !plat_data->default_phy_config) {
dev_err(dev, "Missing platform PHY ops\n");
return ERR_PTR(-ENODEV);
}
hdmi = devm_drm_bridge_alloc(dev, struct inno_hdmi, bridge, &inno_hdmi_bridge_funcs);
if (IS_ERR(hdmi))
return ERR_CAST(hdmi);
hdmi->dev = dev;
variant = of_device_get_match_data(hdmi->dev);
if (!variant)
return -EINVAL;
hdmi->variant = variant;
hdmi->plat_data = plat_data;
hdmi->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(hdmi->regs))
return PTR_ERR(hdmi->regs);
return ERR_CAST(hdmi->regs);
hdmi->pclk = devm_clk_get_enabled(hdmi->dev, "pclk");
if (IS_ERR(hdmi->pclk))
return dev_err_probe(dev, PTR_ERR(hdmi->pclk), "Unable to get HDMI pclk\n");
hdmi->refclk = devm_clk_get_optional_enabled(hdmi->dev, "ref");
if (IS_ERR(hdmi->refclk))
return dev_err_probe(dev, PTR_ERR(hdmi->refclk), "Unable to get HDMI refclk\n");
if (hdmi->variant->dev_type == RK3036_HDMI) {
hdmi->grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf");
if (IS_ERR(hdmi->grf))
return dev_err_probe(dev,
PTR_ERR(hdmi->grf), "Unable to get rockchip,grf\n");
if (IS_ERR(hdmi->pclk)) {
dev_err_probe(dev, PTR_ERR(hdmi->pclk), "Unable to get HDMI pclk\n");
return ERR_CAST(hdmi->pclk);
}
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
hdmi->refclk = devm_clk_get_optional_enabled(hdmi->dev, "ref");
if (IS_ERR(hdmi->refclk)) {
dev_err_probe(dev, PTR_ERR(hdmi->refclk), "Unable to get HDMI refclk\n");
return ERR_CAST(hdmi->refclk);
}
inno_hdmi_init_hw(hdmi);
hdmi->ddc = inno_hdmi_i2c_adapter(hdmi);
if (IS_ERR(hdmi->ddc))
return PTR_ERR(hdmi->ddc);
ret = inno_hdmi_register(drm, hdmi);
if (ret)
return ret;
dev_set_drvdata(dev, hdmi);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return ERR_PTR(irq);
ret = devm_request_threaded_irq(dev, irq, inno_hdmi_hardirq,
inno_hdmi_irq, IRQF_SHARED,
dev_name(dev), hdmi);
if (ret < 0)
goto err_cleanup_hdmi;
if (ret)
return ERR_PTR(ret);
return 0;
err_cleanup_hdmi:
hdmi->connector.funcs->destroy(&hdmi->connector);
hdmi->encoder.encoder.funcs->destroy(&hdmi->encoder.encoder);
return ret;
hdmi->bridge.driver_private = hdmi;
hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT |
DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HDMI |
DRM_BRIDGE_OP_HPD;
hdmi->bridge.of_node = pdev->dev.of_node;
hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
hdmi->bridge.vendor = "Inno";
hdmi->bridge.product = "Inno HDMI";
hdmi->bridge.ddc = inno_hdmi_i2c_adapter(hdmi);
if (IS_ERR(hdmi->bridge.ddc))
return ERR_CAST(hdmi->bridge.ddc);
ret = devm_drm_bridge_add(dev, &hdmi->bridge);
if (ret)
return ERR_PTR(ret);
ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
if (ret)
return ERR_PTR(ret);
return hdmi;
}
static void inno_hdmi_unbind(struct device *dev, struct device *master,
void *data)
{
struct inno_hdmi *hdmi = dev_get_drvdata(dev);
hdmi->connector.funcs->destroy(&hdmi->connector);
hdmi->encoder.encoder.funcs->destroy(&hdmi->encoder.encoder);
}
static const struct component_ops inno_hdmi_ops = {
.bind = inno_hdmi_bind,
.unbind = inno_hdmi_unbind,
};
static int inno_hdmi_probe(struct platform_device *pdev)
{
return component_add(&pdev->dev, &inno_hdmi_ops);
}
static void inno_hdmi_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &inno_hdmi_ops);
}
static const struct inno_hdmi_variant rk3036_inno_hdmi_variant = {
.dev_type = RK3036_HDMI,
.phy_configs = rk3036_hdmi_phy_configs,
.default_phy_config = &rk3036_hdmi_phy_configs[1],
};
static const struct inno_hdmi_variant rk3128_inno_hdmi_variant = {
.dev_type = RK3128_HDMI,
.phy_configs = rk3128_hdmi_phy_configs,
.default_phy_config = &rk3128_hdmi_phy_configs[1],
};
static const struct of_device_id inno_hdmi_dt_ids[] = {
{ .compatible = "rockchip,rk3036-inno-hdmi",
.data = &rk3036_inno_hdmi_variant,
},
{ .compatible = "rockchip,rk3128-inno-hdmi",
.data = &rk3128_inno_hdmi_variant,
},
{},
};
MODULE_DEVICE_TABLE(of, inno_hdmi_dt_ids);
struct platform_driver inno_hdmi_driver = {
.probe = inno_hdmi_probe,
.remove = inno_hdmi_remove,
.driver = {
.name = "innohdmi-rockchip",
.of_match_table = inno_hdmi_dt_ids,
},
};
EXPORT_SYMBOL_GPL(inno_hdmi_bind);
MODULE_AUTHOR("Andy Yan <andyshrk@163.com>");
MODULE_DESCRIPTION("INNOSILICON HDMI transmitter library");
MODULE_LICENSE("GPL");

1
drivers/gpu/drm/rockchip/Kconfig
View File

@ -15,6 +15,7 @@ config DRM_ROCKCHIP
select DRM_DW_HDMI_QP if ROCKCHIP_DW_HDMI_QP
select DRM_DW_MIPI_DSI if ROCKCHIP_DW_MIPI_DSI
select DRM_DW_MIPI_DSI2 if ROCKCHIP_DW_MIPI_DSI2
select DRM_INNO_HDMI if ROCKCHIP_INNO_HDMI
select GENERIC_PHY if ROCKCHIP_DW_MIPI_DSI
select GENERIC_PHY_MIPI_DPHY if ROCKCHIP_DW_MIPI_DSI
select SND_SOC_HDMI_CODEC if ROCKCHIP_CDN_DP && SND_SOC

2
drivers/gpu/drm/rockchip/Makefile
View File

@ -15,7 +15,7 @@ rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI_QP) += dw_hdmi_qp-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI2) += dw-mipi-dsi2-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_DW_DP) += dw_dp-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
rockchipdrm-$(CONFIG_ROCKCHIP_RGB) += rockchip_rgb.o
rockchipdrm-$(CONFIG_ROCKCHIP_RK3066_HDMI) += rk3066_hdmi.o

189
drivers/gpu/drm/rockchip/inno_hdmi-rockchip.c Normal file
View File

@ -0,0 +1,189 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) Rockchip Electronics Co., Ltd.
* Zheng Yang <zhengyang@rock-chips.com>
* Andy Yan <andy.yan@rock-chips.com>
*/
#include <linux/err.h>
#include <linux/hw_bitfield.h>
#include <linux/mfd/syscon.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <drm/bridge/inno_hdmi.h>
#include <drm/drm_bridge_connector.h>
#include <drm/drm_of.h>
#include "rockchip_drm_drv.h"
#define HIWORD_UPDATE(val, mask) ((val) | (mask) << 16)
#define RK3036_GRF_SOC_CON2 0x148
#define RK3036_HDMI_PHSYNC BIT(4)
#define RK3036_HDMI_PVSYNC BIT(5)
enum inno_hdmi_dev_type {
RK3036_HDMI,
RK3128_HDMI,
};
struct inno_hdmi_connector_state {
struct drm_connector_state base;
unsigned int colorimetry;
};
struct rockchip_inno_hdmi {
struct inno_hdmi *base;
struct device *dev;
struct regmap *grf;
struct rockchip_encoder encoder;
};
static struct inno_hdmi_phy_config rk3036_hdmi_phy_configs[] = {
{ 74250000, 0x3f, 0xbb },
{ 165000000, 0x6f, 0xbb },
{ ~0UL, 0x00, 0x00 }
};
static struct inno_hdmi_phy_config rk3128_hdmi_phy_configs[] = {
{ 74250000, 0x3f, 0xaa },
{ 165000000, 0x5f, 0xaa },
{ ~0UL, 0x00, 0x00 }
};
static void inno_hdmi_rk3036_enable(struct device *dev, struct drm_display_mode *mode)
{
struct rockchip_inno_hdmi *hdmi = dev_get_drvdata(dev);
int value, psync;
psync = mode->flags & DRM_MODE_FLAG_PHSYNC ? 1 : 0;
value = FIELD_PREP_WM16(RK3036_HDMI_PHSYNC, psync);
psync = mode->flags & DRM_MODE_FLAG_PVSYNC ? 1 : 0;
value |= FIELD_PREP_WM16(RK3036_HDMI_PVSYNC, psync);
regmap_write(hdmi->grf, RK3036_GRF_SOC_CON2, value);
}
static int inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
s->output_mode = ROCKCHIP_OUT_MODE_P888;
s->output_type = DRM_MODE_CONNECTOR_HDMIA;
return 0;
}
static const struct drm_encoder_helper_funcs inno_hdmi_rockchip_encoder_helper_funcs = {
.atomic_check = inno_hdmi_encoder_atomic_check,
};
static int inno_hdmi_rockchip_bind(struct device *dev, struct device *master, void *data)
{
struct drm_device *drm = data;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct rockchip_inno_hdmi *hdmi;
const struct inno_hdmi_plat_data *plat_data;
int ret;
hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi)
return -ENOMEM;
hdmi->dev = dev;
plat_data = of_device_get_match_data(hdmi->dev);
if (!plat_data)
return -EINVAL;
if (of_device_is_compatible(dev->of_node, "rockchip,rk3036-inno-hdmi")) {
hdmi->grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf");
if (IS_ERR(hdmi->grf))
return dev_err_probe(dev,
PTR_ERR(hdmi->grf), "Unable to get rockchip,grf\n");
}
encoder = &hdmi->encoder.encoder;
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
/*
* If we failed to find the CRTC(s) which this encoder is
* supposed to be connected to, it's because the CRTC has
* not been registered yet. Defer probing, and hope that
* the required CRTC is added later.
*/
if (encoder->possible_crtcs == 0)
return -EPROBE_DEFER;
ret = drmm_encoder_init(drm, encoder, NULL, DRM_MODE_ENCODER_TMDS, NULL);
if (ret)
return ret;
drm_encoder_helper_add(encoder, &inno_hdmi_rockchip_encoder_helper_funcs);
dev_set_drvdata(dev, hdmi);
hdmi->base = inno_hdmi_bind(dev, encoder, plat_data);
connector = drm_bridge_connector_init(drm, encoder);
if (IS_ERR(connector)) {
ret = PTR_ERR(connector);
dev_err(hdmi->dev, "failed to init bridge connector: %d\n", ret);
return ret;
}
return drm_connector_attach_encoder(connector, encoder);
}
static const struct component_ops inno_hdmi_rockchip_ops = {
.bind = inno_hdmi_rockchip_bind,
};
static int inno_hdmi_rockchip_probe(struct platform_device *pdev)
{
return component_add(&pdev->dev, &inno_hdmi_rockchip_ops);
}
static void inno_hdmi_rockchip_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &inno_hdmi_rockchip_ops);
}
static const struct inno_hdmi_plat_ops rk3036_inno_hdmi_plat_ops = {
.enable = inno_hdmi_rk3036_enable,
};
static const struct inno_hdmi_plat_data rk3036_inno_hdmi_plat_data = {
.ops = &rk3036_inno_hdmi_plat_ops,
.phy_configs = rk3036_hdmi_phy_configs,
.default_phy_config = &rk3036_hdmi_phy_configs[1],
};
static const struct inno_hdmi_plat_data rk3128_inno_hdmi_plat_data = {
.phy_configs = rk3128_hdmi_phy_configs,
.default_phy_config = &rk3128_hdmi_phy_configs[1],
};
static const struct of_device_id inno_hdmi_rockchip_dt_ids[] = {
{ .compatible = "rockchip,rk3036-inno-hdmi",
.data = &rk3036_inno_hdmi_plat_data,
},
{ .compatible = "rockchip,rk3128-inno-hdmi",
.data = &rk3128_inno_hdmi_plat_data,
},
{},
};
MODULE_DEVICE_TABLE(of, inno_hdmi_rockchip_dt_ids);
struct platform_driver inno_hdmi_driver = {
.probe = inno_hdmi_rockchip_probe,
.remove = inno_hdmi_rockchip_remove,
.driver = {
.name = "innohdmi-rockchip",
.of_match_table = inno_hdmi_rockchip_dt_ids,
},
};

33
include/drm/bridge/inno_hdmi.h Normal file
View File

@ -0,0 +1,33 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2025 Rockchip Electronics Co., Ltd.
*/
#ifndef __INNO_HDMI__
#define __INNO_HDMI__
struct device;
struct drm_encoder;
struct drm_display_mode;
struct inno_hdmi;
struct inno_hdmi_plat_ops {
void (*enable)(struct device *pdev, struct drm_display_mode *mode);
};
struct inno_hdmi_phy_config {
unsigned long pixelclock;
u8 pre_emphasis;
u8 voltage_level_control;
};
struct inno_hdmi_plat_data {
const struct inno_hdmi_plat_ops *ops;
struct inno_hdmi_phy_config *phy_configs;
struct inno_hdmi_phy_config *default_phy_config;
};
struct inno_hdmi *inno_hdmi_bind(struct device *pdev,
struct drm_encoder *encoder,
const struct inno_hdmi_plat_data *plat_data);
#endif /* __INNO_HDMI__ */