Commit 1f0f0151 authored by Sandy Huang's avatar Sandy Huang Committed by Heiko Stuebner

drm/rockchip: Add support for Rockchip Soc RGB output interface

Some Rockchip CRTCs, like rv1108 and px30, can directly output parallel
and serial RGB data to panel or conversion chip.

So add a feature-bit for vops to mark the ability for these direct
outputs and add an internal encoder in that case, that can attach to
bridge chipsor panels.

Changes in v7:
    1. forget to delete rockchip_rgb_driver and delete it.
Changes in v6:
    1. Update according to Heiko Stuebner' implemention, rgb output is
       part of vop's feature, should not register as a independent
       driver.
Changes in v5:
    1. add SPDX-License-Identifier tag
Changes in v4:
    1. add support px30;
Changes in v3:
    1. update for rgb-mode move to panel node.
Changes in v2:
    1. add error log when probe failed;
    2. update name_to_output_mode() according to sean's suggest;
    3. Fix uninitialized use of ret.
Signed-off-by: default avatarSandy Huang <hjc@rock-chips.com>
Reviewed-by: default avatarSean Paul <seanpaul@chromium.org>
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180830211207.10480-3-heiko@sntech.de
parent 3880f62e
......@@ -8,6 +8,7 @@ config DRM_ROCKCHIP
select DRM_ANALOGIX_DP if ROCKCHIP_ANALOGIX_DP
select DRM_DW_HDMI if ROCKCHIP_DW_HDMI
select DRM_MIPI_DSI if ROCKCHIP_DW_MIPI_DSI
select DRM_RGB if ROCKCHIP_RGB
select SND_SOC_HDMI_CODEC if ROCKCHIP_CDN_DP && SND_SOC
help
Choose this option if you have a Rockchip soc chipset.
......@@ -66,4 +67,14 @@ config ROCKCHIP_LVDS
Rockchip rk3288 SoC has LVDS TX Controller can be used, and it
support LVDS, rgb, dual LVDS output mode. say Y to enable its
driver.
config ROCKCHIP_RGB
bool "Rockchip RGB support"
depends on DRM_ROCKCHIP
depends on PINCTRL
help
Choose this option to enable support for Rockchip RGB output.
Some Rockchip CRTCs, like rv1108, can directly output parallel
and serial RGB format to panel or connect to a conversion chip.
say Y to enable its driver.
endif
......@@ -14,5 +14,6 @@ rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o
rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
rockchipdrm-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
rockchipdrm-$(CONFIG_ROCKCHIP_RGB) += rockchip_rgb.o
obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o
......@@ -42,6 +42,7 @@
#include "rockchip_drm_fb.h"
#include "rockchip_drm_psr.h"
#include "rockchip_drm_vop.h"
#include "rockchip_rgb.h"
#define VOP_WIN_SET(x, win, name, v) \
vop_reg_set(vop, &win->phy->name, win->base, ~0, v, #name)
......@@ -93,6 +94,7 @@ struct vop_win {
struct vop *vop;
};
struct rockchip_rgb;
struct vop {
struct drm_crtc crtc;
struct device *dev;
......@@ -136,6 +138,9 @@ struct vop {
/* vop dclk reset */
struct reset_control *dclk_rst;
/* optional internal rgb encoder */
struct rockchip_rgb *rgb;
struct vop_win win[];
};
......@@ -1638,6 +1643,14 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
if (ret)
goto err_disable_pm_runtime;
if (vop->data->feature & VOP_FEATURE_INTERNAL_RGB) {
vop->rgb = rockchip_rgb_init(dev, &vop->crtc, vop->drm_dev);
if (IS_ERR(vop->rgb)) {
ret = PTR_ERR(vop->rgb);
goto err_disable_pm_runtime;
}
}
return 0;
err_disable_pm_runtime:
......@@ -1650,6 +1663,9 @@ static void vop_unbind(struct device *dev, struct device *master, void *data)
{
struct vop *vop = dev_get_drvdata(dev);
if (vop->rgb)
rockchip_rgb_fini(vop->rgb);
pm_runtime_disable(dev);
vop_destroy_crtc(vop);
......
......@@ -162,6 +162,7 @@ struct vop_data {
unsigned int win_size;
#define VOP_FEATURE_OUTPUT_RGB10 BIT(0)
#define VOP_FEATURE_INTERNAL_RGB BIT(1)
u64 feature;
};
......
//SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
* Author:
* Sandy Huang <hjc@rock-chips.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_panel.h>
#include <drm/drm_of.h>
#include <linux/component.h>
#include <linux/of_graph.h>
#include "rockchip_drm_drv.h"
#include "rockchip_drm_vop.h"
#define encoder_to_rgb(c) container_of(c, struct rockchip_rgb, encoder)
struct rockchip_rgb {
struct device *dev;
struct drm_device *drm_dev;
struct drm_bridge *bridge;
struct drm_encoder encoder;
int output_mode;
};
static int
rockchip_rgb_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_connector *connector = conn_state->connector;
struct drm_display_info *info = &connector->display_info;
u32 bus_format;
if (info->num_bus_formats)
bus_format = info->bus_formats[0];
else
bus_format = MEDIA_BUS_FMT_RGB888_1X24;
switch (bus_format) {
case MEDIA_BUS_FMT_RGB666_1X18:
s->output_mode = ROCKCHIP_OUT_MODE_P666;
break;
case MEDIA_BUS_FMT_RGB565_1X16:
s->output_mode = ROCKCHIP_OUT_MODE_P565;
break;
case MEDIA_BUS_FMT_RGB888_1X24:
case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
default:
s->output_mode = ROCKCHIP_OUT_MODE_P888;
break;
}
s->output_type = DRM_MODE_CONNECTOR_LVDS;
return 0;
}
static const
struct drm_encoder_helper_funcs rockchip_rgb_encoder_helper_funcs = {
.atomic_check = rockchip_rgb_encoder_atomic_check,
};
static const struct drm_encoder_funcs rockchip_rgb_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
struct rockchip_rgb *rockchip_rgb_init(struct device *dev,
struct drm_crtc *crtc,
struct drm_device *drm_dev)
{
struct rockchip_rgb *rgb;
struct drm_encoder *encoder;
struct device_node *port, *endpoint;
u32 endpoint_id;
int ret = 0, child_count = 0;
struct drm_panel *panel;
struct drm_bridge *bridge;
rgb = devm_kzalloc(dev, sizeof(*rgb), GFP_KERNEL);
if (!rgb)
return ERR_PTR(-ENOMEM);
rgb->dev = dev;
rgb->drm_dev = drm_dev;
port = of_graph_get_port_by_id(dev->of_node, 0);
if (!port)
return ERR_PTR(-EINVAL);
for_each_child_of_node(port, endpoint) {
if (of_property_read_u32(endpoint, "reg", &endpoint_id))
endpoint_id = 0;
if (rockchip_drm_endpoint_is_subdriver(endpoint) > 0)
continue;
child_count++;
ret = drm_of_find_panel_or_bridge(dev->of_node, 0, endpoint_id,
&panel, &bridge);
if (!ret)
break;
}
of_node_put(port);
/* if the rgb output is not connected to anything, just return */
if (!child_count)
return NULL;
if (ret < 0) {
if (ret != -EPROBE_DEFER)
DRM_DEV_ERROR(dev, "failed to find panel or bridge %d\n", ret);
return ERR_PTR(ret);
}
encoder = &rgb->encoder;
encoder->possible_crtcs = drm_crtc_mask(crtc);
ret = drm_encoder_init(drm_dev, encoder, &rockchip_rgb_encoder_funcs,
DRM_MODE_ENCODER_NONE, NULL);
if (ret < 0) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to initialize encoder: %d\n", ret);
return ERR_PTR(ret);
}
drm_encoder_helper_add(encoder, &rockchip_rgb_encoder_helper_funcs);
if (panel) {
bridge = drm_panel_bridge_add(panel, DRM_MODE_CONNECTOR_LVDS);
if (IS_ERR(bridge))
return ERR_CAST(bridge);
}
rgb->bridge = bridge;
ret = drm_bridge_attach(encoder, rgb->bridge, NULL);
if (ret) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to attach bridge: %d\n", ret);
goto err_free_encoder;
}
return rgb;
err_free_encoder:
drm_encoder_cleanup(encoder);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(rockchip_rgb_init);
void rockchip_rgb_fini(struct rockchip_rgb *rgb)
{
drm_panel_bridge_remove(rgb->bridge);
drm_encoder_cleanup(&rgb->encoder);
}
EXPORT_SYMBOL_GPL(rockchip_rgb_fini);
//SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
* Author:
* Sandy Huang <hjc@rock-chips.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
struct rockchip_rgb *rockchip_rgb_init(struct device *dev,
struct drm_crtc *crtc,
struct drm_device *drm_dev);
void rockchip_rgb_fini(struct rockchip_rgb *rgb);
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