From: Andy Yan <andy....@rock-chips.com>
Add driver extension for Synopsys DesignWare DPTX IP used
on Rockchip RK3588 SoC.
Signed-off-by: Andy Yan <andy....@rock-chips.com>
---
drivers/gpu/drm/rockchip/Kconfig | 7 +
drivers/gpu/drm/rockchip/Makefile | 1 +
drivers/gpu/drm/rockchip/dw_dp-rockchip.c | 162 ++++++++++++++++++++
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 1 +
drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 1 +
5 files changed, 172 insertions(+)
create mode 100644 drivers/gpu/drm/rockchip/dw_dp-rockchip.c
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index 26c4410b2407..c8638baf9641 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -8,6 +8,7 @@ config DRM_ROCKCHIP
select DRM_PANEL
select VIDEOMODE_HELPERS
select DRM_ANALOGIX_DP if ROCKCHIP_ANALOGIX_DP
+ select DRM_DW_DP if ROCKCHIP_DW_DP
select DRM_DW_HDMI if ROCKCHIP_DW_HDMI
select DRM_DW_HDMI_QP if ROCKCHIP_DW_HDMI_QP
select DRM_DW_MIPI_DSI if ROCKCHIP_DW_MIPI_DSI
@@ -58,6 +59,12 @@ config ROCKCHIP_CDN_DP
RK3399 based SoC, you should select this
option.
+config ROCKCHIP_DW_DP
+ bool "Rockchip specific extensions for Synopsys DW DP"
+ help
+ Choose this option for Synopsys DesignWare Cores DisplayPort
+ transmit controller support on Rockchip SoC.
+
config ROCKCHIP_DW_HDMI
bool "Rockchip specific extensions for Synopsys DW HDMI"
help
diff --git a/drivers/gpu/drm/rockchip/Makefile
b/drivers/gpu/drm/rockchip/Makefile
index 2b867cebbc12..097f062399c7 100644
--- a/drivers/gpu/drm/rockchip/Makefile
+++ b/drivers/gpu/drm/rockchip/Makefile
@@ -14,6 +14,7 @@ rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
rockchipdrm-$(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-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
rockchipdrm-$(CONFIG_ROCKCHIP_RGB) += rockchip_rgb.o
diff --git a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
new file mode 100644
index 000000000000..b41a41eb74d7
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2020 Rockchip Electronics Co., Ltd.
+ *
+ * Author: Zhang Yubing <yubing.zh...@rock-chips.com>
+ * Author: Andy Yan <andy....@rock-chips.com>
+ */
+
+#include <linux/component.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <drm/bridge/dw_dp.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
+#include <drm/drm_of.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#include <uapi/linux/media-bus-format.h>
+#include <uapi/linux/videodev2.h>
+
+#include "rockchip_drm_drv.h"
+#include "rockchip_drm_vop.h"
+
+struct rockchip_dw_dp {
+ struct dw_dp *base;
+ struct device *dev;
+ struct rockchip_encoder encoder;
+};
+
+static inline struct rockchip_dw_dp *encoder_to_dp(struct drm_encoder *encoder)
+{
+ struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);
+
+ return container_of(rkencoder, struct rockchip_dw_dp, encoder);
+}
+
+static int dw_dp_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_atomic_state *state = conn_state->state;
+ struct drm_display_info *di = &conn_state->connector->display_info;
+ struct drm_bridge *bridge = drm_bridge_chain_get_first_bridge(encoder);
+ struct drm_bridge_state *bridge_state =
drm_atomic_get_new_bridge_state(state, bridge);
+ u32 bus_format = bridge_state->input_bus_cfg.format;
+
+ switch (bus_format) {
+ case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
+ case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
+ s->output_mode = ROCKCHIP_OUT_MODE_YUV420;
+ break;
+ case MEDIA_BUS_FMT_YUYV10_1X20:
+ case MEDIA_BUS_FMT_YUYV8_1X16:
+ s->output_mode = ROCKCHIP_OUT_MODE_S888_DUMMY;
+ break;
+ case MEDIA_BUS_FMT_RGB101010_1X30:
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
+ case MEDIA_BUS_FMT_YUV10_1X30:
+ case MEDIA_BUS_FMT_YUV8_1X24:
+ default:
+ s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
+ break;
+ }
+
+ s->output_type = DRM_MODE_CONNECTOR_DisplayPort;
+ s->bus_format = bus_format;
+ s->bus_flags = di->bus_flags;
+ s->color_space = V4L2_COLORSPACE_DEFAULT;
+
+ return 0;
+}
+
+static const struct drm_encoder_helper_funcs dw_dp_encoder_helper_funcs = {
+ .atomic_check = dw_dp_encoder_atomic_check,
+};
+
+static int dw_dp_rockchip_bind(struct device *dev, struct device *master, void
*data)
+{
+ struct dw_dp_plat_data plat_data;
+ struct drm_device *drm_dev = data;
+ struct rockchip_dw_dp *dp;
+ struct drm_encoder *encoder;
+ struct drm_connector *connector;
+ int ret;
+
+ dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
+ if (!dp)
+ return -ENOMEM;
+
+ dp->dev = dev;
+ plat_data.max_link_rate = 810000;
+ encoder = &dp->encoder.encoder;
+ encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
dev->of_node);
+ rockchip_drm_encoder_set_crtc_endpoint_id(&dp->encoder, dev->of_node,
0, 0);
+
+ drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+ drm_encoder_helper_add(encoder, &dw_dp_encoder_helper_funcs);
+
+ dp->base = dw_dp_bind(dev, encoder, &plat_data);
+ if (IS_ERR(dp->base)) {
+ ret = PTR_ERR(dp->base);
+ drm_encoder_cleanup(encoder);
+ return ret;
+ }
+
+ connector = drm_bridge_connector_init(drm_dev, encoder);
+ if (IS_ERR(connector)) {
+ ret = PTR_ERR(connector);
+ dev_err(dev, "Failed to init bridge connector: %d\n", ret);
+ return ret;
+ }
+
+ drm_connector_attach_encoder(connector, encoder);
+
+ return 0;
+}
+
+static void dw_dp_rockchip_unbind(struct device *dev, struct device *master,
void *data)
+{
+ struct rockchip_dw_dp *dp = dev_get_drvdata(dev);
+
+ drm_encoder_cleanup(&dp->encoder.encoder);
+}
+
+static const struct component_ops dw_dp_rockchip_component_ops = {
+ .bind = dw_dp_rockchip_bind,
+ .unbind = dw_dp_rockchip_unbind,
+};
+
+static int dw_dp_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+
+ return component_add(dev, &dw_dp_rockchip_component_ops);
+}
+
+static void dw_dp_remove(struct platform_device *pdev)
+{
+ struct rockchip_dw_dp *dp = platform_get_drvdata(pdev);
+
+ component_del(dp->dev, &dw_dp_rockchip_component_ops);
+}
+
+static const struct of_device_id dw_dp_of_match[] = {
+ { .compatible = "rockchip,rk3588-dp", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dw_dp_of_match);
+
+struct platform_driver dw_dp_driver = {
+ .probe = dw_dp_probe,
+ .remove = dw_dp_remove,
+ .driver = {
+ .name = "dw-dp",
+ .of_match_table = dw_dp_of_match,
+ },
+};
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 9cf311b5dec1..2b245491c71d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -529,6 +529,7 @@ static int __init rockchip_drm_init(void)
ADD_ROCKCHIP_SUB_DRIVER(rockchip_dp_driver,
CONFIG_ROCKCHIP_ANALOGIX_DP);
ADD_ROCKCHIP_SUB_DRIVER(cdn_dp_driver, CONFIG_ROCKCHIP_CDN_DP);
+ ADD_ROCKCHIP_SUB_DRIVER(dw_dp_driver, CONFIG_ROCKCHIP_DW_DP);
ADD_ROCKCHIP_SUB_DRIVER(dw_hdmi_rockchip_pltfm_driver,
CONFIG_ROCKCHIP_DW_HDMI);
ADD_ROCKCHIP_SUB_DRIVER(dw_hdmi_qp_rockchip_pltfm_driver,
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
index c183e82a42a5..2e86ad00979c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
@@ -87,6 +87,7 @@ int rockchip_drm_encoder_set_crtc_endpoint_id(struct
rockchip_encoder *rencoder,
struct device_node *np, int port,
int reg);
int rockchip_drm_endpoint_is_subdriver(struct device_node *ep);
extern struct platform_driver cdn_dp_driver;
+extern struct platform_driver dw_dp_driver;
extern struct platform_driver dw_hdmi_rockchip_pltfm_driver;
extern struct platform_driver dw_hdmi_qp_rockchip_pltfm_driver;
extern struct platform_driver dw_mipi_dsi_rockchip_driver;
--
2.34.1
