// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2008-2018 Fuzhou Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/device-internal.h>
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#include <errno.h>
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#include <i2c.h>
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#include <video_bridge.h>
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#include <linux/media-bus-format.h>
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#include "rockchip_display.h"
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#include "rockchip_bridge.h"
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#include "rockchip_panel.h"
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#include "rockchip_connector.h"
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#include "rk618.h"
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enum {
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LVDS_8BIT_MODE_FORMAT_1,
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LVDS_8BIT_MODE_FORMAT_2,
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LVDS_8BIT_MODE_FORMAT_3,
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LVDS_6BIT_MODE,
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};
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struct rk618_lvds_priv {
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struct udevice *dev;
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struct rk618 *parent;
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bool dual_channel;
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};
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static int lvds_write(struct rk618_lvds_priv *priv, u16 reg, u32 val)
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{
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return rk618_i2c_write(priv->parent, reg, val);
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}
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static void rk618_lvds_bridge_enable(struct rockchip_bridge *bridge)
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{
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struct rk618_lvds_priv *priv = dev_get_priv(bridge->dev);
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struct rockchip_panel *panel = bridge->conn->panel;
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u32 value, format;
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rk618_frc_dclk_invert(priv->parent);
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switch (panel->bus_format) {
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case MEDIA_BUS_FMT_RGB666_1X7X3_JEIDA: /* jeida-18 */
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format = LVDS_6BIT_MODE;
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break;
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case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA: /* jeida-24 */
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format = LVDS_8BIT_MODE_FORMAT_2;
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break;
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case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG: /* vesa-18 */
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format = LVDS_8BIT_MODE_FORMAT_3;
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break;
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case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG: /* vesa-24 */
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default:
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format = LVDS_8BIT_MODE_FORMAT_1;
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break;
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}
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value = LVDS_CON_CHA0TTL_DISABLE | LVDS_CON_CHA1TTL_DISABLE |
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LVDS_CON_CHA0_POWER_UP | LVDS_CON_CBG_POWER_UP |
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LVDS_CON_PLL_POWER_UP | LVDS_CON_SELECT(format);
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if (priv->dual_channel)
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value |= LVDS_CON_CHA1_POWER_UP | LVDS_DCLK_INV |
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LVDS_CON_CHASEL_DOUBLE_CHANNEL;
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else
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value |= LVDS_CON_CHA1_POWER_DOWN |
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LVDS_CON_CHASEL_SINGLE_CHANNEL;
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lvds_write(priv, RK618_LVDS_CON, value);
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}
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static void rk618_lvds_bridge_disable(struct rockchip_bridge *bridge)
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{
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struct rk618_lvds_priv *priv = dev_get_priv(bridge->dev);
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lvds_write(priv, RK618_LVDS_CON,
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LVDS_CON_CHA0_POWER_DOWN | LVDS_CON_CHA1_POWER_DOWN |
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LVDS_CON_CBG_POWER_DOWN | LVDS_CON_PLL_POWER_DOWN);
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}
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static const struct rockchip_bridge_funcs rk618_lvds_bridge_funcs = {
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.enable = rk618_lvds_bridge_enable,
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.disable = rk618_lvds_bridge_disable,
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};
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static int rk618_lvds_probe(struct udevice *dev)
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{
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struct rk618_lvds_priv *priv = dev_get_priv(dev);
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struct rockchip_bridge *bridge =
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(struct rockchip_bridge *)dev_get_driver_data(dev);
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int ret;
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priv->dev = dev;
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priv->parent = dev_get_priv(dev->parent);
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priv->dual_channel = dev_read_bool(dev, "dual-channel");
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ret = device_probe(dev->parent);
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if (ret)
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return ret;
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bridge->dev = dev;
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return 0;
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}
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static struct rockchip_bridge rk618_lvds_driver_data = {
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.funcs = &rk618_lvds_bridge_funcs,
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};
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static const struct udevice_id rk618_lvds_ids[] = {
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{
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.compatible = "rockchip,rk618-lvds",
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.data = (ulong)&rk618_lvds_driver_data,
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},
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{ }
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};
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U_BOOT_DRIVER(rk618_lvds) = {
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.name = "rk618_lvds",
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.id = UCLASS_VIDEO_BRIDGE,
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.of_match = rk618_lvds_ids,
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.probe = rk618_lvds_probe,
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.priv_auto_alloc_size = sizeof(struct rk618_lvds_priv),
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};
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