leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/rockchip: Add support for Rockchip Soc LVDS

Browse Source 
This adds support for Rockchip soc lvds found on rk3288
Based on the patches from Mark yao and Heiko Stuebner.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Reviewed-by: Mark Yao <mark.yao@rock-chips.com>
Tested-by: Wadim Egorov <w.egorov@phytec.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1504351737-136042-1-git-send-email-hjc@rock-chips.com
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
This commit is contained in:
Sandy Huang 2017-09-02 19:28:54 +08:00 committed by Mark Yao
parent a5e03a48b2
commit 34cc0aa254
6 changed files with 707 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/rockchip/Kconfig
View File

@ -57,4 +57,12 @@ config ROCKCHIP_INNO_HDMI
for the Innosilicon HDMI driver. If you want to enable
HDMI on RK3036 based SoC, you should select this option.
config ROCKCHIP_LVDS
bool "Rockchip LVDS support"
depends on DRM_ROCKCHIP
help
Choose this option to enable support for Rockchip LVDS controllers.
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.
endif

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

@ -12,5 +12,6 @@ rockchipdrm-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp-core.o cdn-dp-reg.o
rockchipdrm-$(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-$(CONFIG_ROCKCHIP_LVDS) += rockchip_lvds.o
obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o

2
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
View File

@ -445,6 +445,8 @@ static int __init rockchip_drm_init(void)
num_rockchip_sub_drivers = 0;
ADD_ROCKCHIP_SUB_DRIVER(vop_platform_driver, CONFIG_DRM_ROCKCHIP);
ADD_ROCKCHIP_SUB_DRIVER(rockchip_lvds_driver,
CONFIG_ROCKCHIP_LVDS);
ADD_ROCKCHIP_SUB_DRIVER(rockchip_dp_driver,
CONFIG_ROCKCHIP_ANALOGIX_DP);
ADD_ROCKCHIP_SUB_DRIVER(cdn_dp_driver, CONFIG_ROCKCHIP_CDN_DP);

1
drivers/gpu/drm/rockchip/rockchip_drm_drv.h
View File

@ -69,5 +69,6 @@ extern struct platform_driver dw_hdmi_rockchip_pltfm_driver;
extern struct platform_driver dw_mipi_dsi_driver;
extern struct platform_driver inno_hdmi_driver;
extern struct platform_driver rockchip_dp_driver;
extern struct platform_driver rockchip_lvds_driver;
extern struct platform_driver vop_platform_driver;
#endif /* _ROCKCHIP_DRM_DRV_H_ */

581
drivers/gpu/drm/rockchip/rockchip_lvds.c Normal file
View File

@ -0,0 +1,581 @@
/*
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
* Author:
* Mark Yao <mark.yao@rock-chips.com>
* 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/clk.h>
#include <linux/mfd/syscon.h>
#include <linux/of_graph.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include "rockchip_drm_drv.h"
#include "rockchip_drm_vop.h"
#include "rockchip_lvds.h"
#define DISPLAY_OUTPUT_RGB 0
#define DISPLAY_OUTPUT_LVDS 1
#define DISPLAY_OUTPUT_DUAL_LVDS 2
#define connector_to_lvds(c) \
container_of(c, struct rockchip_lvds, connector)
#define encoder_to_lvds(c) \
container_of(c, struct rockchip_lvds, encoder)
/**
* rockchip_lvds_soc_data - rockchip lvds Soc private data
* @ch1_offset: lvds channel 1 registe offset
* grf_soc_con6: general registe offset for LVDS contrl
* grf_soc_con7: general registe offset for LVDS contrl
* has_vop_sel: to indicate whether need to choose from different VOP.
*/
struct rockchip_lvds_soc_data {
u32 ch1_offset;
int grf_soc_con6;
int grf_soc_con7;
bool has_vop_sel;
};
struct rockchip_lvds {
struct device *dev;
void __iomem *regs;
struct regmap *grf;
struct clk *pclk;
const struct rockchip_lvds_soc_data *soc_data;
int output; /* rgb lvds or dual lvds output */
int format; /* vesa or jeida format */
struct drm_device *drm_dev;
struct drm_panel *panel;
struct drm_bridge *bridge;
struct drm_connector connector;
struct drm_encoder encoder;
struct dev_pin_info *pins;
};
static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val)
{
writel_relaxed(val, lvds->regs + offset);
if (lvds->output == DISPLAY_OUTPUT_LVDS)
return;
writel_relaxed(val, lvds->regs + offset + lvds->soc_data->ch1_offset);
}
static inline int lvds_name_to_format(const char *s)
{
if (strncmp(s, "jeida-18", 8) == 0)
return LVDS_JEIDA_18;
else if (strncmp(s, "jeida-24", 8) == 0)
return LVDS_JEIDA_24;
else if (strncmp(s, "vesa-24", 7) == 0)
return LVDS_VESA_24;
return -EINVAL;
}
static inline int lvds_name_to_output(const char *s)
{
if (strncmp(s, "rgb", 3) == 0)
return DISPLAY_OUTPUT_RGB;
else if (strncmp(s, "lvds", 4) == 0)
return DISPLAY_OUTPUT_LVDS;
else if (strncmp(s, "duallvds", 8) == 0)
return DISPLAY_OUTPUT_DUAL_LVDS;
return -EINVAL;
}
static int rockchip_lvds_poweron(struct rockchip_lvds *lvds)
{
int ret;
u32 val;
ret = clk_enable(lvds->pclk);
if (ret < 0) {
DRM_DEV_ERROR(lvds->dev, "failed to enable lvds pclk %d\n", ret);
return ret;
}
ret = pm_runtime_get_sync(lvds->dev);
if (ret < 0) {
DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);
clk_disable(lvds->pclk);
return ret;
}
val = RK3288_LVDS_CH0_REG0_LANE4_EN | RK3288_LVDS_CH0_REG0_LANE3_EN |
RK3288_LVDS_CH0_REG0_LANE2_EN | RK3288_LVDS_CH0_REG0_LANE1_EN |
RK3288_LVDS_CH0_REG0_LANE0_EN;
if (lvds->output == DISPLAY_OUTPUT_RGB) {
val |= RK3288_LVDS_CH0_REG0_TTL_EN |
RK3288_LVDS_CH0_REG0_LANECK_EN;
lvds_writel(lvds, RK3288_LVDS_CH0_REG0, val);
lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
RK3288_LVDS_PLL_FBDIV_REG2(0x46));
lvds_writel(lvds, RK3288_LVDS_CH0_REG4,
RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |
RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |
RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |
RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |
RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |
RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);
lvds_writel(lvds, RK3288_LVDS_CH0_REG5,
RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |
RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |
RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |
RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |
RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |
RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);
} else {
val |= RK3288_LVDS_CH0_REG0_LVDS_EN |
RK3288_LVDS_CH0_REG0_LANECK_EN;
lvds_writel(lvds, RK3288_LVDS_CH0_REG0, val);
lvds_writel(lvds, RK3288_LVDS_CH0_REG1,
RK3288_LVDS_CH0_REG1_LANECK_BIAS |
RK3288_LVDS_CH0_REG1_LANE4_BIAS |
RK3288_LVDS_CH0_REG1_LANE3_BIAS |
RK3288_LVDS_CH0_REG1_LANE2_BIAS |
RK3288_LVDS_CH0_REG1_LANE1_BIAS |
RK3288_LVDS_CH0_REG1_LANE0_BIAS);
lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
RK3288_LVDS_CH0_REG2_RESERVE_ON |
RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |
RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |
RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |
RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |
RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |
RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |
RK3288_LVDS_PLL_FBDIV_REG2(0x46));
lvds_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);
lvds_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);
}
lvds_writel(lvds, RK3288_LVDS_CH0_REG3, RK3288_LVDS_PLL_FBDIV_REG3(0x46));
lvds_writel(lvds, RK3288_LVDS_CH0_REGD, RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
lvds_writel(lvds, RK3288_LVDS_CH0_REG20, RK3288_LVDS_CH0_REG20_LSB);
lvds_writel(lvds, RK3288_LVDS_CFG_REGC, RK3288_LVDS_CFG_REGC_PLL_ENABLE);
lvds_writel(lvds, RK3288_LVDS_CFG_REG21, RK3288_LVDS_CFG_REG21_TX_ENABLE);
return 0;
}
static void rockchip_lvds_poweroff(struct rockchip_lvds *lvds)
{
int ret;
u32 val;
lvds_writel(lvds, RK3288_LVDS_CFG_REG21, RK3288_LVDS_CFG_REG21_TX_ENABLE);
lvds_writel(lvds, RK3288_LVDS_CFG_REGC, RK3288_LVDS_CFG_REGC_PLL_ENABLE);
val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN;
val |= val << 16;
ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
if (ret != 0)
DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
pm_runtime_put(lvds->dev);
clk_disable(lvds->pclk);
}
static const struct drm_connector_funcs rockchip_lvds_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.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 rockchip_lvds_connector_get_modes(struct drm_connector *connector)
{
struct rockchip_lvds *lvds = connector_to_lvds(connector);
struct drm_panel *panel = lvds->panel;
return drm_panel_get_modes(panel);
}
static const
struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
.get_modes = rockchip_lvds_connector_get_modes,
};
static void rockchip_lvds_grf_config(struct drm_encoder *encoder,
struct drm_display_mode *mode)
{
struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0;
u32 val;
int ret;
/* iomux to LCD data/sync mode */
if (lvds->output == DISPLAY_OUTPUT_RGB)
if (lvds->pins && !IS_ERR(lvds->pins->default_state))
pinctrl_select_state(lvds->pins->p,
lvds->pins->default_state);
val = lvds->format | LVDS_CH0_EN;
if (lvds->output == DISPLAY_OUTPUT_RGB)
val |= LVDS_TTL_EN | LVDS_CH1_EN;
else if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS)
val |= LVDS_DUAL | LVDS_CH1_EN;
if ((mode->htotal - mode->hsync_start) & 0x01)
val |= LVDS_START_PHASE_RST_1;
val |= (pin_dclk << 8) | (pin_hsync << 9);
val |= (0xffff << 16);
ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
if (ret != 0) {
DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
return;
}
}
static int rockchip_lvds_set_vop_source(struct rockchip_lvds *lvds,
struct drm_encoder *encoder)
{
u32 val;
int ret;
if (!lvds->soc_data->has_vop_sel)
return 0;
ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
if (ret < 0)
return ret;
val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16;
if (ret)
val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT;
ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con6, val);
if (ret < 0)
return ret;
return 0;
}
static int
rockchip_lvds_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_LVDS;
return 0;
}
static void rockchip_lvds_encoder_enable(struct drm_encoder *encoder)
{
struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
int ret;
drm_panel_prepare(lvds->panel);
ret = rockchip_lvds_poweron(lvds);
if (ret < 0) {
DRM_DEV_ERROR(lvds->dev, "failed to power on lvds: %d\n", ret);
drm_panel_unprepare(lvds->panel);
}
rockchip_lvds_grf_config(encoder, mode);
rockchip_lvds_set_vop_source(lvds, encoder);
drm_panel_enable(lvds->panel);
}
static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder)
{
struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
drm_panel_disable(lvds->panel);
rockchip_lvds_poweroff(lvds);
drm_panel_unprepare(lvds->panel);
}
static const
struct drm_encoder_helper_funcs rockchip_lvds_encoder_helper_funcs = {
.enable = rockchip_lvds_encoder_enable,
.disable = rockchip_lvds_encoder_disable,
.atomic_check = rockchip_lvds_encoder_atomic_check,
};
static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
.ch1_offset = 0x100,
.grf_soc_con6 = 0x025c,
.grf_soc_con7 = 0x0260,
.has_vop_sel = true,
};
static const struct of_device_id rockchip_lvds_dt_ids[] = {
{
.compatible = "rockchip,rk3288-lvds",
.data = &rk3288_lvds_data
},
{}
};
MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids);
static int rockchip_lvds_bind(struct device *dev, struct device *master,
void *data)
{
struct rockchip_lvds *lvds = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
struct drm_encoder *encoder;
struct drm_connector *connector;
struct device_node *remote = NULL;
struct device_node *port, *endpoint;
int ret;
const char *name;
u32 endpoint_id;
lvds->drm_dev = drm_dev;
port = of_graph_get_port_by_id(dev->of_node, 1);
if (!port) {
DRM_DEV_ERROR(dev,
"can't found port point, please init lvds panel port!\n");
return -EINVAL;
}
for_each_child_of_node(port, endpoint) {
of_property_read_u32(endpoint, "reg", &endpoint_id);
ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id,
&lvds->panel, &lvds->bridge);
if (!ret)
break;
}
if (ret) {
DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n");
ret = -EPROBE_DEFER;
goto err_put_port;
}
if (lvds->panel)
remote = lvds->panel->dev->of_node;
else
remote = lvds->bridge->of_node;
if (of_property_read_string(dev->of_node, "rockchip,output", &name))
/* default set it as output rgb */
lvds->output = DISPLAY_OUTPUT_RGB;
else
lvds->output = lvds_name_to_output(name);
if (lvds->output < 0) {
DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name);
ret = lvds->output;
goto err_put_remote;
}
if (of_property_read_string(remote, "data-mapping", &name))
/* default set it as format vesa 18 */
lvds->format = LVDS_VESA_18;
else
lvds->format = lvds_name_to_format(name);
if (lvds->format < 0) {
DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name);
ret = lvds->format;
goto err_put_remote;
}
encoder = &lvds->encoder;
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
dev->of_node);
ret = drm_encoder_init(drm_dev, encoder, &rockchip_lvds_encoder_funcs,
DRM_MODE_ENCODER_LVDS, NULL);
if (ret < 0) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to initialize encoder: %d\n", ret);
goto err_put_remote;
}
drm_encoder_helper_add(encoder, &rockchip_lvds_encoder_helper_funcs);
if (lvds->panel) {
connector = &lvds->connector;
connector->dpms = DRM_MODE_DPMS_OFF;
ret = drm_connector_init(drm_dev, connector,
&rockchip_lvds_connector_funcs,
DRM_MODE_CONNECTOR_LVDS);
if (ret < 0) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to initialize connector: %d\n", ret);
goto err_free_encoder;
}
drm_connector_helper_add(connector,
&rockchip_lvds_connector_helper_funcs);
ret = drm_mode_connector_attach_encoder(connector, encoder);
if (ret < 0) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to attach encoder: %d\n", ret);
goto err_free_connector;
}
ret = drm_panel_attach(lvds->panel, connector);
if (ret < 0) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to attach panel: %d\n", ret);
goto err_free_connector;
}
} else {
lvds->bridge->encoder = encoder;
ret = drm_bridge_attach(encoder, lvds->bridge, NULL);
if (ret) {
DRM_DEV_ERROR(drm_dev->dev,
"failed to attach bridge: %d\n", ret);
goto err_free_encoder;
}
encoder->bridge = lvds->bridge;
}
pm_runtime_enable(dev);
of_node_put(remote);
of_node_put(port);
return 0;
err_free_connector:
drm_connector_cleanup(connector);
err_free_encoder:
drm_encoder_cleanup(encoder);
err_put_remote:
of_node_put(remote);
err_put_port:
of_node_put(port);
return ret;
}
static void rockchip_lvds_unbind(struct device *dev, struct device *master,
void *data)
{
struct rockchip_lvds *lvds = dev_get_drvdata(dev);
rockchip_lvds_encoder_disable(&lvds->encoder);
if (lvds->panel)
drm_panel_detach(lvds->panel);
pm_runtime_disable(dev);
drm_connector_cleanup(&lvds->connector);
drm_encoder_cleanup(&lvds->encoder);
}
static const struct component_ops rockchip_lvds_component_ops = {
.bind = rockchip_lvds_bind,
.unbind = rockchip_lvds_unbind,
};
static int rockchip_lvds_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rockchip_lvds *lvds;
const struct of_device_id *match;
struct resource *res;
int ret;
if (!dev->of_node)
return -ENODEV;
lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
if (!lvds)
return -ENOMEM;
lvds->dev = dev;
match = of_match_node(rockchip_lvds_dt_ids, dev->of_node);
if (!match)
return -ENODEV;
lvds->soc_data = match->data;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
lvds->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(lvds->regs))
return PTR_ERR(lvds->regs);
lvds->pclk = devm_clk_get(&pdev->dev, "pclk_lvds");
if (IS_ERR(lvds->pclk)) {
DRM_DEV_ERROR(dev, "could not get pclk_lvds\n");
return PTR_ERR(lvds->pclk);
}
lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins),
GFP_KERNEL);
if (!lvds->pins)
return -ENOMEM;
lvds->pins->p = devm_pinctrl_get(lvds->dev);
if (IS_ERR(lvds->pins->p)) {
DRM_DEV_ERROR(dev, "no pinctrl handle\n");
devm_kfree(lvds->dev, lvds->pins);
lvds->pins = NULL;
} else {
lvds->pins->default_state =
pinctrl_lookup_state(lvds->pins->p, "lcdc");
if (IS_ERR(lvds->pins->default_state)) {
DRM_DEV_ERROR(dev, "no default pinctrl state\n");
devm_kfree(lvds->dev, lvds->pins);
lvds->pins = NULL;
}
}
lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,grf");
if (IS_ERR(lvds->grf)) {
DRM_DEV_ERROR(dev, "missing rockchip,grf property\n");
return PTR_ERR(lvds->grf);
}
dev_set_drvdata(dev, lvds);
ret = clk_prepare(lvds->pclk);
if (ret < 0) {
DRM_DEV_ERROR(dev, "failed to prepare pclk_lvds\n");
return ret;
}
ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);
if (ret < 0) {
DRM_DEV_ERROR(dev, "failed to add component\n");
clk_unprepare(lvds->pclk);
}
return ret;
}
static int rockchip_lvds_remove(struct platform_device *pdev)
{
struct rockchip_lvds *lvds = dev_get_drvdata(&pdev->dev);
component_del(&pdev->dev, &rockchip_lvds_component_ops);
clk_unprepare(lvds->pclk);
return 0;
}
struct platform_driver rockchip_lvds_driver = {
.probe = rockchip_lvds_probe,
.remove = rockchip_lvds_remove,
.driver = {
.name = "rockchip-lvds",
.of_match_table = of_match_ptr(rockchip_lvds_dt_ids),
},
};

114
drivers/gpu/drm/rockchip/rockchip_lvds.h Normal file
View File

@ -0,0 +1,114 @@
/*
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
* Author:
* Sandy Huang <hjc@rock-chips.com>
* Mark Yao <mark.yao@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.
*/
#ifndef _ROCKCHIP_LVDS_
#define _ROCKCHIP_LVDS_
#define RK3288_LVDS_CH0_REG0 0x00
#define RK3288_LVDS_CH0_REG0_LVDS_EN BIT(7)
#define RK3288_LVDS_CH0_REG0_TTL_EN BIT(6)
#define RK3288_LVDS_CH0_REG0_LANECK_EN BIT(5)
#define RK3288_LVDS_CH0_REG0_LANE4_EN BIT(4)
#define RK3288_LVDS_CH0_REG0_LANE3_EN BIT(3)
#define RK3288_LVDS_CH0_REG0_LANE2_EN BIT(2)
#define RK3288_LVDS_CH0_REG0_LANE1_EN BIT(1)
#define RK3288_LVDS_CH0_REG0_LANE0_EN BIT(0)
#define RK3288_LVDS_CH0_REG1 0x04
#define RK3288_LVDS_CH0_REG1_LANECK_BIAS BIT(5)
#define RK3288_LVDS_CH0_REG1_LANE4_BIAS BIT(4)
#define RK3288_LVDS_CH0_REG1_LANE3_BIAS BIT(3)
#define RK3288_LVDS_CH0_REG1_LANE2_BIAS BIT(2)
#define RK3288_LVDS_CH0_REG1_LANE1_BIAS BIT(1)
#define RK3288_LVDS_CH0_REG1_LANE0_BIAS BIT(0)
#define RK3288_LVDS_CH0_REG2 0x08
#define RK3288_LVDS_CH0_REG2_RESERVE_ON BIT(7)
#define RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE BIT(6)
#define RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE BIT(5)
#define RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE BIT(4)
#define RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE BIT(3)
#define RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE BIT(2)
#define RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE BIT(1)
#define RK3288_LVDS_CH0_REG2_PLL_FBDIV8 BIT(0)
#define RK3288_LVDS_CH0_REG3 0x0c
#define RK3288_LVDS_CH0_REG3_PLL_FBDIV_MASK 0xff
#define RK3288_LVDS_CH0_REG4 0x10
#define RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE BIT(5)
#define RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE BIT(4)
#define RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE BIT(3)
#define RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE BIT(2)
#define RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE BIT(1)
#define RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE BIT(0)
#define RK3288_LVDS_CH0_REG5 0x14
#define RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA BIT(5)
#define RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA BIT(4)
#define RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA BIT(3)
#define RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA BIT(2)
#define RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA BIT(1)
#define RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA BIT(0)
#define RK3288_LVDS_CFG_REGC 0x30
#define RK3288_LVDS_CFG_REGC_PLL_ENABLE 0x00
#define RK3288_LVDS_CFG_REGC_PLL_DISABLE 0xff
#define RK3288_LVDS_CH0_REGD 0x34
#define RK3288_LVDS_CH0_REGD_PLL_PREDIV_MASK 0x1f
#define RK3288_LVDS_CH0_REG20 0x80
#define RK3288_LVDS_CH0_REG20_MSB 0x45
#define RK3288_LVDS_CH0_REG20_LSB 0x44
#define RK3288_LVDS_CFG_REG21 0x84
#define RK3288_LVDS_CFG_REG21_TX_ENABLE 0x92
#define RK3288_LVDS_CFG_REG21_TX_DISABLE 0x00
#define RK3288_LVDS_CH1_OFFSET 0x100
/* fbdiv value is split over 2 registers, with bit8 in reg2 */
#define RK3288_LVDS_PLL_FBDIV_REG2(_fbd) \
(_fbd & BIT(8) ? RK3288_LVDS_CH0_REG2_PLL_FBDIV8 : 0)
#define RK3288_LVDS_PLL_FBDIV_REG3(_fbd) \
(_fbd & RK3288_LVDS_CH0_REG3_PLL_FBDIV_MASK)
#define RK3288_LVDS_PLL_PREDIV_REGD(_pd) \
(_pd & RK3288_LVDS_CH0_REGD_PLL_PREDIV_MASK)
#define RK3288_LVDS_SOC_CON6_SEL_VOP_LIT BIT(3)
#define LVDS_FMT_MASK (0x07 << 16)
#define LVDS_MSB BIT(3)
#define LVDS_DUAL BIT(4)
#define LVDS_FMT_1 BIT(5)
#define LVDS_TTL_EN BIT(6)
#define LVDS_START_PHASE_RST_1 BIT(7)
#define LVDS_DCLK_INV BIT(8)
#define LVDS_CH0_EN BIT(11)
#define LVDS_CH1_EN BIT(12)
#define LVDS_PWRDN BIT(15)
#define LVDS_24BIT (0 << 1)
#define LVDS_18BIT (1 << 1)
#define LVDS_FORMAT_VESA (0 << 0)
#define LVDS_FORMAT_JEIDA (1 << 0)
#define LVDS_VESA_24 0
#define LVDS_JEIDA_24 1
#define LVDS_VESA_18 2
#define LVDS_JEIDA_18 3
#endif /* _ROCKCHIP_LVDS_ */