From: baihan li <libaihan@xxxxxxxxxx>
To support DP interface displaying in hibmc driver. Add
a encoder and connector for DP modual.
Signed-off-by: baihan li <libaihan@xxxxxxxxxx>
Signed-off-by: yongbang shi <shiyongbang@xxxxxxxxxx>
---
ChangeLog:
v2 -> v3:
- fix build errors reported by kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202410251136.1m7BlR68-lkp@xxxxxxxxx/
v1 -> v2:
- deleting struct dp_mode and dp_mode_cfg function, suggested by Dmitry Baryshkov.
- modifying drm_simple_encoder_init function, suggested by Dmitry Baryshkov.
- refactoring struct hibmc_connector, suggested by Dmitry Baryshkov.
- withdrawing the modification in hibmc_kms_init, suggested by Dmitry Baryshkov.
v1:https://lore.kernel.org/all/20240930100610.782363-1-shiyongbang@xxxxxxxxxx/
---
drivers/gpu/drm/hisilicon/hibmc/Makefile | 2 +-
.../gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c | 128 ++++++++++++++++++
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 16 +++
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 21 +--
.../gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c | 41 +++---
.../gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c | 20 +--
6 files changed, 188 insertions(+), 40 deletions(-)
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile b/drivers/gpu/drm/hisilicon/hibmc/Makefile
index 214228052ccf..95a4ed599d98 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Makefile
+++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_i2c.o \
- dp/dp_aux.o dp/dp_link.o dp/dp_hw.o
+ dp/dp_aux.o dp/dp_link.o dp/dp_hw.o hibmc_drm_dp.o
obj-$(CONFIG_DRM_HISI_HIBMC) += hibmc-drm.o
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c
new file mode 100644
index 000000000000..1e0f2ef39ba6
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+// Copyright (c) 2024 Hisilicon Limited.
+
+#include <linux/io.h>
+
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_edid.h>
+
+#include "hibmc_drm_drv.h"
+#include "dp/dp_hw.h"
+
+static int hibmc_dp_connector_get_modes(struct drm_connector *connector)
+{
+ int count;
+
+ count = drm_add_modes_noedid(connector, connector->dev->mode_config.max_width,
+ connector->dev->mode_config.max_height);
+ drm_set_preferred_mode(connector, 1024, 768); // temporary implementation
+
+ return count;
+}
+
+static const struct drm_connector_helper_funcs hibmc_dp_conn_helper_funcs = {
+ .get_modes = hibmc_dp_connector_get_modes,
+};
+
+static const struct drm_connector_funcs hibmc_dp_conn_funcs = {
+ .reset = drm_atomic_helper_connector_reset,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int hibmc_dp_prepare(struct hibmc_dp *dp, struct drm_display_mode *mode)
+{
+ int ret;
+
+ hibmc_dp_display_en(dp, false);
+
+ ret = hibmc_dp_mode_set(dp, mode);
+ if (ret)
+ drm_err(dp->drm_dev, "hibmc dp mode set failed: %d\n", ret);
+
+ return ret;
+}
+
+static void hibmc_dp_encoder_enable(struct drm_encoder *drm_encoder,
+ struct drm_atomic_state *state)
+{
+ struct hibmc_dp *dp = container_of(drm_encoder, struct hibmc_dp, encoder);
+ struct drm_display_mode *mode = &drm_encoder->crtc->state->mode;
+
+ if (hibmc_dp_prepare(dp, mode))
+ return;
+
+ hibmc_dp_display_en(dp, true);
+}
+
+static void hibmc_dp_encoder_disable(struct drm_encoder *drm_encoder,
+ struct drm_atomic_state *state)
+{
+ struct hibmc_dp *dp = container_of(drm_encoder, struct hibmc_dp, encoder);
+
+ hibmc_dp_display_en(dp, false);
+}
+
+static const struct drm_encoder_helper_funcs hibmc_dp_encoder_helper_funcs = {
+ .atomic_enable = hibmc_dp_encoder_enable,
+ .atomic_disable = hibmc_dp_encoder_disable,
+};
+
+void hibmc_dp_uninit(struct hibmc_drm_private *priv)
+{
+ hibmc_dp_hw_uninit(&priv->dp);
+}
+
+int hibmc_dp_init(struct hibmc_drm_private *priv)
+{
+ struct drm_device *dev = &priv->dev;
+ struct drm_crtc *crtc = &priv->crtc;
+ struct hibmc_dp *dp = &priv->dp;
+ struct drm_connector *connector = &dp->connector;
+ struct drm_encoder *encoder = &dp->encoder;
+ int ret;
+
+ dp->mmio = priv->mmio;
+ dp->drm_dev = dev;
+
+ ret = hibmc_dp_hw_init(&priv->dp);
+ if (ret) {
+ drm_err(dev, "hibmc dp hw init failed: %d\n", ret);
+ return ret;
+ }
+
+ hibmc_dp_display_en(&priv->dp, false);
+
+ encoder->possible_crtcs = drm_crtc_mask(crtc);
+ ret = drmm_encoder_init(dev, encoder, NULL, DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret) {
+ drm_err(dev, "init dp encoder failed: %d\n", ret);
+ goto err_init;
+ }
+
+ drm_encoder_helper_add(encoder, &hibmc_dp_encoder_helper_funcs);
+
+ ret = drm_connector_init(dev, connector, &hibmc_dp_conn_funcs,
+ DRM_MODE_CONNECTOR_DisplayPort);
+ if (ret) {
+ drm_err(dev, "init dp connector failed: %d\n", ret);
+ goto err_init;
+ }
+
+ drm_connector_helper_add(connector, &hibmc_dp_conn_helper_funcs);
+
+ drm_connector_attach_encoder(connector, encoder);
+
+ return 0;
+
+err_init:
+ hibmc_dp_hw_uninit(&priv->dp);
+
+ return ret;
+}
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 9f9b19ea0587..f98ac94a18b9 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -27,6 +27,10 @@
#include "hibmc_drm_drv.h"
#include "hibmc_drm_regs.h"
+#define DP_HOST_SERDES_CTRL 0x1f001c
+#define DP_HOST_SERDES_CTRL_VAL 0x8A00
+#define DP_HOST_SERDES_CTRL_MASK 0x7FFFE
+
DEFINE_DRM_GEM_FOPS(hibmc_fops);
static irqreturn_t hibmc_interrupt(int irq, void *arg)
@@ -116,6 +120,14 @@ static int hibmc_kms_init(struct hibmc_drm_private *priv)
return ret;
}
+ /* if DP existed, init DP */
+ if ((readl(priv->mmio + DP_HOST_SERDES_CTRL) &
+ DP_HOST_SERDES_CTRL_MASK) == DP_HOST_SERDES_CTRL_VAL) {
+ ret = hibmc_dp_init(priv);
+ if (ret)
+ drm_err(dev, "failed to init dp: %d\n", ret);
+ }
+
ret = hibmc_vdac_init(priv);
if (ret) {
drm_err(dev, "failed to init vdac: %d\n", ret);
@@ -239,6 +251,7 @@ static int hibmc_hw_init(struct hibmc_drm_private *priv)
static int hibmc_unload(struct drm_device *dev)
{
+ struct hibmc_drm_private *priv = to_hibmc_drm_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
drm_atomic_helper_shutdown(dev);
@@ -247,6 +260,9 @@ static int hibmc_unload(struct drm_device *dev)
pci_disable_msi(to_pci_dev(dev->dev));
+ if (priv->dp.encoder.possible_crtcs)
+ hibmc_dp_uninit(priv);
+
return 0;
}
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index 6b566f3aeecb..1b78d313a6c2 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -19,10 +19,12 @@
#include <linux/i2c.h>
#include <drm/drm_framebuffer.h>
+#include "dp/dp_hw.h"
-struct hibmc_connector {
- struct drm_connector base;
-
+struct hibmc_vdac {
+ struct drm_device *dev;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
struct i2c_adapter adapter;
struct i2c_algo_bit_data bit_data;
};
@@ -35,13 +37,13 @@ struct hibmc_drm_private {
struct drm_device dev;
struct drm_plane primary_plane;
struct drm_crtc crtc;
- struct drm_encoder encoder;
- struct hibmc_connector connector;
+ struct hibmc_dp dp;
+ struct hibmc_vdac vdac;
};
-static inline struct hibmc_connector *to_hibmc_connector(struct drm_connector *connector)
+static inline struct hibmc_vdac *to_hibmc_vdac(struct drm_connector *connector)
{
- return container_of(connector, struct hibmc_connector, base);
+ return container_of(connector, struct hibmc_vdac, connector);
}
static inline struct hibmc_drm_private *to_hibmc_drm_private(struct drm_device *dev)
@@ -57,6 +59,9 @@ void hibmc_set_current_gate(struct hibmc_drm_private *priv,
int hibmc_de_init(struct hibmc_drm_private *priv);
int hibmc_vdac_init(struct hibmc_drm_private *priv);
-int hibmc_ddc_create(struct drm_device *drm_dev, struct hibmc_connector *connector);
+int hibmc_ddc_create(struct drm_device *drm_dev, struct hibmc_vdac *connector);
+
+int hibmc_dp_init(struct hibmc_drm_private *priv);
+void hibmc_dp_uninit(struct hibmc_drm_private *priv);
#endif
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c
index e6e48651c15c..99b3b77b5445 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c
@@ -25,8 +25,8 @@
static void hibmc_set_i2c_signal(void *data, u32 mask, int value)
{
- struct hibmc_connector *hibmc_connector = data;
- struct hibmc_drm_private *priv = to_hibmc_drm_private(hibmc_connector->base.dev);
+ struct hibmc_vdac *vdac = data;
+ struct hibmc_drm_private *priv = to_hibmc_drm_private(vdac->connector.dev);
u32 tmp_dir = readl(priv->mmio + GPIO_DATA_DIRECTION);
if (value) {
@@ -45,8 +45,8 @@ static void hibmc_set_i2c_signal(void *data, u32 mask, int value)
static int hibmc_get_i2c_signal(void *data, u32 mask)
{
- struct hibmc_connector *hibmc_connector = data;
- struct hibmc_drm_private *priv = to_hibmc_drm_private(hibmc_connector->base.dev);
+ struct hibmc_vdac *vdac = data;
+ struct hibmc_drm_private *priv = to_hibmc_drm_private(vdac->connector.dev);
u32 tmp_dir = readl(priv->mmio + GPIO_DATA_DIRECTION);
if ((tmp_dir & mask) != mask) {
@@ -77,22 +77,21 @@ static int hibmc_ddc_getscl(void *data)
return hibmc_get_i2c_signal(data, I2C_SCL_MASK);
}
-int hibmc_ddc_create(struct drm_device *drm_dev,
- struct hibmc_connector *connector)
+int hibmc_ddc_create(struct drm_device *drm_dev, struct hibmc_vdac *vdac)
{
- connector->adapter.owner = THIS_MODULE;
- snprintf(connector->adapter.name, I2C_NAME_SIZE, "HIS i2c bit bus");
- connector->adapter.dev.parent = drm_dev->dev;
- i2c_set_adapdata(&connector->adapter, connector);
- connector->adapter.algo_data = &connector->bit_data;
-
- connector->bit_data.udelay = 20;
- connector->bit_data.timeout = usecs_to_jiffies(2000);
- connector->bit_data.data = connector;
- connector->bit_data.setsda = hibmc_ddc_setsda;
- connector->bit_data.setscl = hibmc_ddc_setscl;
- connector->bit_data.getsda = hibmc_ddc_getsda;
- connector->bit_data.getscl = hibmc_ddc_getscl;
-
- return i2c_bit_add_bus(&connector->adapter);
+ vdac->adapter.owner = THIS_MODULE;
+ snprintf(vdac->adapter.name, I2C_NAME_SIZE, "HIS i2c bit bus");
+ vdac->adapter.dev.parent = drm_dev->dev;
+ i2c_set_adapdata(&vdac->adapter, vdac);
+ vdac->adapter.algo_data = &vdac->bit_data;
+
+ vdac->bit_data.udelay = 20;
+ vdac->bit_data.timeout = usecs_to_jiffies(2000);
+ vdac->bit_data.data = vdac;
+ vdac->bit_data.setsda = hibmc_ddc_setsda;
+ vdac->bit_data.setscl = hibmc_ddc_setscl;
+ vdac->bit_data.getsda = hibmc_ddc_getsda;
+ vdac->bit_data.getscl = hibmc_ddc_getscl;
+
+ return i2c_bit_add_bus(&vdac->adapter);
}
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
index 409c551c92af..05e19ea4c9f9 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
@@ -24,11 +24,11 @@
static int hibmc_connector_get_modes(struct drm_connector *connector)
{
- struct hibmc_connector *hibmc_connector = to_hibmc_connector(connector);
+ struct hibmc_vdac *vdac = to_hibmc_vdac(connector);
const struct drm_edid *drm_edid;
int count;
- drm_edid = drm_edid_read_ddc(connector, &hibmc_connector->adapter);
+ drm_edid = drm_edid_read_ddc(connector, &vdac->adapter);
drm_edid_connector_update(connector, drm_edid);
@@ -51,9 +51,9 @@ static int hibmc_connector_get_modes(struct drm_connector *connector)
static void hibmc_connector_destroy(struct drm_connector *connector)
{
- struct hibmc_connector *hibmc_connector = to_hibmc_connector(connector);
+ struct hibmc_vdac *vdac = to_hibmc_vdac(connector);
- i2c_del_adapter(&hibmc_connector->adapter);
+ i2c_del_adapter(&vdac->adapter);
drm_connector_cleanup(connector);
}
@@ -93,20 +93,20 @@ static const struct drm_encoder_helper_funcs hibmc_encoder_helper_funcs = {
int hibmc_vdac_init(struct hibmc_drm_private *priv)
{
struct drm_device *dev = &priv->dev;
- struct hibmc_connector *hibmc_connector = &priv->connector;
- struct drm_encoder *encoder = &priv->encoder;
+ struct hibmc_vdac *vdac = &priv->vdac;
+ struct drm_encoder *encoder = &vdac->encoder;
struct drm_crtc *crtc = &priv->crtc;
- struct drm_connector *connector = &hibmc_connector->base;
+ struct drm_connector *connector = &vdac->connector;
int ret;
- ret = hibmc_ddc_create(dev, hibmc_connector);
+ ret = hibmc_ddc_create(dev, vdac);
if (ret) {
drm_err(dev, "failed to create ddc: %d\n", ret);
return ret;
}
encoder->possible_crtcs = drm_crtc_mask(crtc);
- ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
+ ret = drmm_encoder_init(dev, encoder, NULL, DRM_MODE_ENCODER_DAC, NULL);
if (ret) {
drm_err(dev, "failed to init encoder: %d\n", ret);
return ret;
@@ -117,7 +117,7 @@ int hibmc_vdac_init(struct hibmc_drm_private *priv)
ret = drm_connector_init_with_ddc(dev, connector,
&hibmc_connector_funcs,
DRM_MODE_CONNECTOR_VGA,
- &hibmc_connector->adapter);
+ &vdac->adapter);
if (ret) {
drm_err(dev, "failed to init connector: %d\n", ret);
return ret;
--
2.33.0
