// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014 MediaTek Inc.
* Author: Jie Qiu <jie.qiu@mediatek.com>
*/
#include <linux/arm-smccc.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/hdmi.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of_platform.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <sound/hdmi-codec.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include "mtk_cec.h"
#include "mtk_hdmi_common.h"
#include "mtk_hdmi_regs.h"
#define NCTS_BYTES 7
enum mtk_hdmi_clk_id {
MTK_HDMI_CLK_HDMI_PIXEL,
MTK_HDMI_CLK_HDMI_PLL,
MTK_HDMI_CLK_AUD_BCLK,
MTK_HDMI_CLK_AUD_SPDIF,
MTK_HDMI_CLK_COUNT
};
static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
{
regmap_update_bits(hdmi->regs, VIDEO_CFG_4,
VIDEO_SOURCE_SEL, black ? GEN_RGB : NORMAL_PATH);
}
static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
{
struct arm_smccc_res res;
/*
* MT8173 HDMI hardware has an output control bit to enable/disable HDMI
* output. This bit can only be controlled in ARM supervisor mode.
* The ARM trusted firmware provides an API for the HDMI driver to set
* this control bit to enable HDMI output in supervisor mode.
*/
if (hdmi->conf && hdmi->conf->tz_disabled)
regmap_update_bits(hdmi->sys_regmap,
hdmi->sys_offset + HDMI_SYS_CFG20,
0x80008005, enable ? 0x80000005 : 0x8000);
else
arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904,
0x80000000, 0, 0, 0, 0, 0, &res);
regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0);
}
static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable)
{
regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
HDMI2P0_EN, enable ? 0 : HDMI2P0_EN);
}
static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
{
regmap_set_bits(hdmi->regs, GRL_AUDIO_CFG, AUDIO_ZERO);
}
static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
{
regmap_clear_bits(hdmi->regs, GRL_AUDIO_CFG, AUDIO_ZERO);
}
static 