xref: /OK3568_Linux_fs/kernel/drivers/misc/rk628/rk628_rgb.c (revision 4882a59341e53eb6f0b4789bf948001014eff981)

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2020 Rockchip Electronics Co. Ltd.
 *
 * Author: Guochun Huang <hero.huang@rock-chips.com>
 */

#include "rk628.h"
#include "rk628_cru.h"
#include "rk628_config.h"
#include "panel.h"

void rk628_rgb_decoder_enable(struct rk628 *rk628)
{
		/* config sw_input_mode RGB */
	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0, SW_INPUT_MODE_MASK,
			      SW_INPUT_MODE(INPUT_MODE_RGB));

	/* pinctrl for vop pin */
	rk628_i2c_write(rk628, GRF_GPIO2AB_SEL_CON, 0xffffffff);
	rk628_i2c_write(rk628, GRF_GPIO2C_SEL_CON, 0xffff5555);
	rk628_i2c_write(rk628, GRF_GPIO3AB_SEL_CON, 0x10b010b);

	/* rk628: modify IO drive strength for RGB */
	rk628_i2c_write(rk628, GRF_GPIO2A_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2A_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2B_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2B_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2C_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2C_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO3A_D0_CON, 0xffff1011);
	rk628_i2c_write(rk628, GRF_GPIO3B_D_CON, 0x10001);
}

void rk628_rgb_encoder_enable(struct rk628 *rk628)
{
	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0,
			      SW_BT_DATA_OEN_MASK | SW_OUTPUT_MODE_MASK,
			      SW_OUTPUT_MODE(OUTPUT_MODE_RGB));
	rk628_i2c_update_bits(rk628, GRF_POST_PROC_CON, SW_DCLK_OUT_INV_EN,
			      SW_DCLK_OUT_INV_EN);
}

void rk628_rgb_encoder_disable(struct rk628 *rk628)
{
	rk628_panel_disable(rk628);
	rk628_panel_unprepare(rk628);
}


void rk628_rgb_rx_enable(struct rk628 *rk628)
{

	rk628_rgb_decoder_enable(rk628);

}

void rk628_rgb_tx_enable(struct rk628 *rk628)
{
	rk628_rgb_encoder_enable(rk628);

	rk628_panel_prepare(rk628);
	rk628_panel_enable(rk628);
}

void rk628_rgb_tx_disable(struct rk628 *rk628)
{
	rk628_panel_disable(rk628);
}

void rk628_bt1120_decoder_enable(struct rk628 *rk628)
{
	struct rk628_display_mode *mode = rk628_display_get_src_mode(rk628);

	/* pinctrl for vop pin */
	rk628_i2c_write(rk628, GRF_GPIO2AB_SEL_CON, 0xffffffff);
	rk628_i2c_write(rk628, GRF_GPIO2C_SEL_CON, 0xffff5555);
	rk628_i2c_write(rk628, GRF_GPIO3AB_SEL_CON, 0x10b010b);

	/* rk628: modify IO drive strength for RGB */
	rk628_i2c_write(rk628, GRF_GPIO2A_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2A_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2B_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2B_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2C_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2C_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO3A_D0_CON, 0xffff1011);
	rk628_i2c_write(rk628, GRF_GPIO3B_D_CON, 0x10001);

	/* config sw_input_mode bt1120 */
	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0, SW_INPUT_MODE_MASK,
			      SW_INPUT_MODE(INPUT_MODE_BT1120));

	/* operation resetn_bt1120dec */
	rk628_i2c_write(rk628, CRU_SOFTRST_CON00, 0x10001000);
	rk628_i2c_write(rk628, CRU_SOFTRST_CON00, 0x10000000);

	rk628_cru_clk_set_rate(rk628, CGU_BT1120DEC, mode->clock * 1000);

#ifdef BT1120_DUAL_EDGE
	rk628_i2c_update_bits(rk628, GRF_RGB_DEC_CON0,
			      DEC_DUALEDGE_EN, DEC_DUALEDGE_EN);
	rk628_i2c_write(rk628, GRF_BT1120_DCLK_DELAY_CON0, 0x10000000);
	rk628_i2c_write(rk628, GRF_BT1120_DCLK_DELAY_CON1, 0);
#endif

	rk628_i2c_update_bits(rk628, GRF_RGB_DEC_CON1, SW_SET_X_MASK,
			      SW_SET_X(mode->hdisplay));
	rk628_i2c_update_bits(rk628, GRF_RGB_DEC_CON2, SW_SET_Y_MASK,
			      SW_SET_Y(mode->vdisplay));

	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0,
			      SW_BT_DATA_OEN_MASK | SW_INPUT_MODE_MASK,
			      SW_BT_DATA_OEN | SW_INPUT_MODE(INPUT_MODE_BT1120));
	rk628_i2c_write(rk628, GRF_CSC_CTRL_CON, SW_Y2R_EN(1));
	rk628_i2c_update_bits(rk628, GRF_RGB_DEC_CON0,
			      SW_CAP_EN_PSYNC | SW_CAP_EN_ASYNC | SW_PROGRESS_EN,
			      SW_CAP_EN_PSYNC | SW_CAP_EN_ASYNC | SW_PROGRESS_EN);
}

void rk628_bt1120_encoder_enable(struct rk628 *rk628)
{
	u32 val = 0;

	/* pinctrl for vop pin */
	rk628_i2c_write(rk628, GRF_GPIO2AB_SEL_CON, 0xffffffff);
	rk628_i2c_write(rk628, GRF_GPIO2C_SEL_CON, 0xffff5555);
	rk628_i2c_write(rk628, GRF_GPIO3AB_SEL_CON, 0x10b010b);

	/* rk628: modify IO drive strength for RGB */
	rk628_i2c_write(rk628, GRF_GPIO2A_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2A_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2B_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2B_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2C_D0_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO2C_D1_CON, 0xffff1111);
	rk628_i2c_write(rk628, GRF_GPIO3A_D0_CON, 0xffff1011);
	rk628_i2c_write(rk628, GRF_GPIO3B_D_CON, 0x10001);

	/* config sw_input_mode bt1120 */
	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0,
			      SW_BT_DATA_OEN_MASK | SW_OUTPUT_MODE_MASK,
			      SW_OUTPUT_MODE(OUTPUT_MODE_BT1120));
	rk628_i2c_write(rk628, GRF_CSC_CTRL_CON, SW_R2Y_EN(1));
	rk628_i2c_update_bits(rk628, GRF_POST_PROC_CON,
			      SW_DCLK_OUT_INV_EN, SW_DCLK_OUT_INV_EN);

#ifdef BT1120_DUAL_EDGE
	val |= ENC_DUALEDGE_EN(1);
	rk628_i2c_write(rk628, GRF_BT1120_DCLK_DELAY_CON0, 0x10000000);
	rk628_i2c_write(rk628, GRF_BT1120_DCLK_DELAY_CON1, 0);
#endif
	val |= BT1120_UV_SWAP(1);
	rk628_i2c_write(rk628, GRF_RGB_ENC_CON, val);
}

void rk628_bt1120_rx_enable(struct rk628 *rk628)
{
	rk628_bt1120_decoder_enable(rk628);
}

void rk628_bt1120_tx_enable(struct rk628 *rk628)
{
	rk628_bt1120_encoder_enable(rk628);
}