This patch adds a DisplayPort driver for the Mediatek mt8195 SoC.
It supports both functional units on the mt8195, the embedded
DisplayPort as well as the external DisplayPort units. It offers
hot-plug-detection, audio up to 8 channels, and DisplayPort 1.4 with up
to 4 lanes.
This driver is based on an initial version by
Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>.
Signed-off-by: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
---
Notes:
Changes RFC -> v1:
- Removed unused register definitions.
- Replaced workqueue with threaded irq.
- Removed connector code.
- Move to atomic_* drm functions.
- General cleanups of the code.
- Remove unused select GENERIC_PHY.
drivers/gpu/drm/mediatek/Kconfig | 6 +
drivers/gpu/drm/mediatek/Makefile | 2 +
drivers/gpu/drm/mediatek/mtk_dp.c | 2881 +++++++++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_dp_reg.h | 580 +++++
4 files changed, 3469 insertions(+)
create mode 100644 drivers/gpu/drm/mediatek/mtk_dp.c
create mode 100644 drivers/gpu/drm/mediatek/mtk_dp_reg.h
diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index 2976d21e9a34..6d6a5b5872f2 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -28,3 +28,9 @@ config DRM_MEDIATEK_HDMI
select PHY_MTK_HDMI
help
DRM/KMS HDMI driver for Mediatek SoCs
+
+config MTK_DPTX_SUPPORT
+ tristate "DRM DPTX Support for Mediatek SoCs"
+ depends on DRM_MEDIATEK
+ help
+ DRM/KMS Display Port driver for Mediatek SoCs.
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 3abd27d7c91d..ba6e2228bbf8 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -25,3 +25,5 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
mtk_hdmi_ddc.o
obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
+
+obj-$(CONFIG_MTK_DPTX_SUPPORT) += mtk_dp.o
diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
new file mode 100644
index 000000000000..1bd07c8d2f69
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -0,0 +1,2881 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ * Copyright (c) 2021 BayLibre
+ */
+
+#include <linux/arm-smccc.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/extcon.h>
+#include <linux/extcon-provider.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_dp_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <sound/hdmi-codec.h>
+#include <video/videomode.h>
+
+#include "mtk_dp_reg.h"
+
+#define MTK_DP_AUX_WAIT_REPLY_COUNT 20000
+#define MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT 3
+
+#define MTK_DP_MAX_LANES 4
+#define MTK_DP_MAX_LINK_RATE MTK_DP_LINKRATE_HBR3
+
+#define MTK_DP_TBC_BUF_READ_START_ADDR 0x08
+
+#define MTK_DP_TRAIN_RETRY_LIMIT 8
+#define MTK_DP_TRAIN_MAX_ITERATIONS 5
+
+#define MTK_DP_AUX_WRITE_READ_WAIT_TIME_US 20
+
+#define MTK_DP_DP_VERSION_11 0x11
+
+enum mtk_dp_state {
+ MTK_DP_STATE_INITIAL,
+ MTK_DP_STATE_IDLE,
+ MTK_DP_STATE_PREPARE,
+ MTK_DP_STATE_NORMAL,
+};
+
+enum mtk_dp_train_state {
+ MTK_DP_TRAIN_STATE_STARTUP = 0,
+ MTK_DP_TRAIN_STATE_CHECKCAP,
+ MTK_DP_TRAIN_STATE_CHECKEDID,
+ MTK_DP_TRAIN_STATE_TRAINING_PRE,
+ MTK_DP_TRAIN_STATE_TRAINING,
+ MTK_DP_TRAIN_STATE_CHECKTIMING,
+ MTK_DP_TRAIN_STATE_NORMAL,
+ MTK_DP_TRAIN_STATE_POWERSAVE,
+ MTK_DP_TRAIN_STATE_DPIDLE,
+};
+
+struct mtk_dp_timings {
+ struct videomode vm;
+
+ u16 htotal;
+ u16 vtotal;
+ u8 frame_rate;
+ u32 pix_rate_khz;
+};
+
+struct mtk_dp_train_info {
+ bool tps3;
+ bool tps4;
+ bool sink_ssc;
+ bool cable_plugged_in;
+ bool cable_state_change;
+ bool cr_done;
+ bool eq_done;
+
+ // link_rate is in multiple of 0.27Gbps
+ int link_rate;
+ int lane_count;
+
+ int irq_status;
+ int check_cap_count;
+};
+
+// Same values as used by the DP Spec for MISC0 bits 1 and 2
+enum mtk_dp_color_format {
+ MTK_DP_COLOR_FORMAT_RGB_444 = 0,
+ MTK_DP_COLOR_FORMAT_YUV_422 = 1,
+ MTK_DP_COLOR_FORMAT_YUV_444 = 2,
+ MTK_DP_COLOR_FORMAT_YUV_420 = 3,
+ MTK_DP_COLOR_FORMAT_YONLY = 4,
+ MTK_DP_COLOR_FORMAT_RAW = 5,
+ MTK_DP_COLOR_FORMAT_RESERVED = 6,
+ MTK_DP_COLOR_FORMAT_DEFAULT = MTK_DP_COLOR_FORMAT_RGB_444,
+ MTK_DP_COLOR_FORMAT_UNKNOWN = 15,
+};
+
+// Multiple of 0.27Gbps
+enum mtk_dp_linkrate {
+ MTK_DP_LINKRATE_RBR = 0x6,
+ MTK_DP_LINKRATE_HBR = 0xA,
+ MTK_DP_LINKRATE_HBR2 = 0x14,
+ MTK_DP_LINKRATE_HBR25 = 0x19,
+ MTK_DP_LINKRATE_HBR3 = 0x1E,
+};
+
+// Same values as used for DP Spec MISC0 bits 5,6,7
+enum mtk_dp_color_depth {
+ MTK_DP_COLOR_DEPTH_6BIT = 0,
+ MTK_DP_COLOR_DEPTH_8BIT = 1,
+ MTK_DP_COLOR_DEPTH_10BIT = 2,
+ MTK_DP_COLOR_DEPTH_12BIT = 3,
+ MTK_DP_COLOR_DEPTH_16BIT = 4,
+ MTK_DP_COLOR_DEPTH_UNKNOWN = 5,
+};
+
+struct mtk_dp_audio_cfg {
+ int sample_rate;
+ int word_length_bits;
+ int channels;
+};
+
+struct mtk_dp_info {
+ enum mtk_dp_color_depth depth;
+ enum mtk_dp_color_format format;
+ struct mtk_dp_audio_cfg audio_caps;
+ struct mtk_dp_timings timings;
+};
+
+struct mtk_dp_driver_data {
+ bool is_edp;
+};
+
+struct mtk_dp {
+ const struct mtk_dp_driver_data *driver_data;
+ struct device *dev;
+
+ struct drm_device *drm_dev;
+ struct drm_bridge bridge;
+ struct drm_bridge *next_bridge;
+ struct drm_dp_aux aux;
+ struct edid *edid;
+
+ u8 rx_cap[DP_RECEIVER_CAP_SIZE];
+
+ struct mtk_dp_info info;
+ enum mtk_dp_state state;
+
+ struct mtk_dp_train_info train_info;
+ enum mtk_dp_train_state train_state;
+
+ struct regmap *regs;
+ struct clk *dp_tx_clk;
+
+ bool pre_enabled;
+ bool enabled;
+ bool audio_enable;
+
+ bool has_fec;
+ struct mutex dp_lock;
+
+ struct mutex update_plugged_status_lock;
+
+ hdmi_codec_plugged_cb plugged_cb;
+ struct device *codec_dev;
+ u8 connector_eld[MAX_ELD_BYTES];
+};
+
+enum mtk_dp_sdp_type {
+ MTK_DP_SDP_NONE = 0x00,
+ MTK_DP_SDP_ACM = 0x01,
+ MTK_DP_SDP_ISRC = 0x02,
+ MTK_DP_SDP_AVI = 0x03,
+ MTK_DP_SDP_AUI = 0x04,
+ MTK_DP_SDP_SPD = 0x05,
+ MTK_DP_SDP_MPEG = 0x06,
+ MTK_DP_SDP_NTSC = 0x07,
+ MTK_DP_SDP_VSP = 0x08,
+ MTK_DP_SDP_VSC = 0x09,
+ MTK_DP_SDP_EXT = 0x0A,
+ MTK_DP_SDP_PPS0 = 0x0B,
+ MTK_DP_SDP_PPS1 = 0x0C,
+ MTK_DP_SDP_PPS2 = 0x0D,
+ MTK_DP_SDP_PPS3 = 0x0E,
+ MTK_DP_SDP_DRM = 0x10,
+ MTK_DP_SDP_MAX_NUM
+};
+
+struct mtk_dp_sdp_packet {
+ enum mtk_dp_sdp_type type;
+ u8 header[4];
+ u8 data[32];
+};
+
+#define MTK_DP_IEC_CHANNEL_STATUS_LEN 5
+union mtk_dp_audio_channel_status {
+ struct {
+ u8 rev : 1;
+ u8 is_lpcm : 1;
+ u8 copy_right : 1;
+ u8 additional_format_info : 3;
+ u8 channel_status_mode : 2;
+ u8 category_code;
+ u8 src_num : 4;
+ u8 channel_num : 4;
+ u8 sampling_freq : 4;
+ u8 clk_accuracy : 2;
+ u8 rev2 : 2;
+ u8 word_len : 4;
+ u8 original_sampling_freq : 4;
+ } iec;
+
+ u8 buf[MTK_DP_IEC_CHANNEL_STATUS_LEN];
+};
+
+static struct regmap_config mtk_dp_regmap_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = SEC_OFFSET + 0x90,
+ .name = "mtk-dp-registers",
+};
+
+static inline struct mtk_dp *mtk_dp_from_bridge(struct drm_bridge *b)
+{
+ return container_of(b, struct mtk_dp, bridge);
+}
+
+static u32 mtk_dp_read(struct mtk_dp *mtk_dp, u32 offset)
+{
+ u32 read_val;
+ int ret;
+
+ ret = regmap_read(mtk_dp->regs, offset, &read_val);
+ if (ret) {
+ dev_err(mtk_dp->dev, "Failed to read register 0x%x: %d\n",
+ offset, ret);
+ return 0;
+ }
+
+ return read_val;
+}
+
+static void mtk_dp_write(struct mtk_dp *mtk_dp, u32 offset, u32 val)
+{
+ int ret;
+
+ ret = regmap_write(mtk_dp->regs, offset, val);
+ if (ret)
+ dev_err(mtk_dp->dev,
+ "Failed to write register 0x%x with value 0x%x: %d\n",
+ offset, val, ret);
+}
+
+static void mtk_dp_update_bits(struct mtk_dp *mtk_dp, u32 offset, u32 val,
+ u32 mask)
+{
+ int ret;
+
+ ret = regmap_update_bits(mtk_dp->regs, offset, mask, val);
+ if (ret)
+ dev_err(mtk_dp->dev,
+ "Failed to update register 0x%x with value 0x%x, mask 0x%x: %d\n",
+ offset, val, mask, ret);
+}
+
+static void mtk_dp_bulk_16bit_write(struct mtk_dp *mtk_dp, u32 offset, u8 *buf,
+ size_t length)
+{
+ int i;
+ int num_regs = (length + 1) / 2;
+
+ // 2 bytes per register
+ for (i = 0; i < num_regs; i++) {
+ u32 val = buf[i * 2] |
+ (i * 2 + 1 < length ? buf[i * 2 + 1] << 8 : 0);
+
+ mtk_dp_write(mtk_dp, offset + i * 4, val);
+ }
+}
+
+static unsigned long mtk_dp_sip_atf_call(unsigned int cmd, unsigned int para)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_smc(MTK_DP_SIP_CONTROL_AARCH32, cmd, para, 0, 0, 0, 0, 0,
+ &res);
+
+ pr_debug("[DPTX]%s cmd 0x%x, p1 0x%x, ret 0x%lx-0x%lx", __func__, cmd,
+ para, res.a0, res.a1);
+ return res.a1;
+}
+
+static void mtk_dp_msa_bypass_disable(struct mtk_dp *mtk_dp)
+{
+ const u16 bits_to_set = BIT(HTOTAL_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VTOTAL_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HSTART_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VSTART_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HWIDTH_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VHEIGHT_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HSP_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(HSW_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VSP_SEL_DP_ENC0_P0_SHIFT) |
+ BIT(VSW_SEL_DP_ENC0_P0_SHIFT);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3030, bits_to_set,
+ bits_to_set);
+}
+
+static void mtk_dp_set_msa(struct mtk_dp *mtk_dp)
+{
+ struct mtk_dp_timings *timings = &mtk_dp->info.timings;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3010, timings->htotal,
+ HTOTAL_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3018,
+ timings->vm.hsync_len + timings->vm.hback_porch,
+ HSTART_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028,
+ timings->vm.hsync_len << HSW_SW_DP_ENC0_P0_SHIFT,
+ HSW_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3028, 0,
+ HSP_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3020, timings->vm.hactive,
+ HWIDTH_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3014, timings->vtotal,
+ VTOTAL_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_301C,
+ timings->vm.vsync_len + timings->vm.vback_porch,
+ VSTART_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C,
+ timings->vm.vsync_len << VSW_SW_DP_ENC0_P0_SHIFT,
+ VSW_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_302C, 0,
+ VSP_SW_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3024, timings->vm.vactive,
+ VHEIGHT_SW_DP_ENC0_P0_MASK);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3064, timings->vm.hactive,
+ HDE_NUM_LAST_DP_ENC0_P0_MASK);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3154, timings->htotal,
+ PGEN_HTOTAL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3158,
+ timings->vm.hfront_porch,
+ PGEN_HSYNC_RISING_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_315C, timings->vm.hsync_len,
+ PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3160,
+ timings->vm.hback_porch + timings->vm.hsync_len,
+ PGEN_HFDE_START_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3164, timings->vm.hactive,
+ PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3168, timings->vtotal,
+ PGEN_VTOTAL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_316C,
+ timings->vm.vfront_porch,
+ PGEN_VSYNC_RISING_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3170, timings->vm.vsync_len,
+ PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3174,
+ timings->vm.vback_porch + timings->vm.vsync_len,
+ PGEN_VFDE_START_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3178, timings->vm.vactive,
+ PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_color_format(struct mtk_dp *mtk_dp,
+ enum mtk_dp_color_format color_format)
+{
+ u32 val;
+
+ mtk_dp->info.format = color_format;
+
+ // Update MISC0
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
+ color_format << DP_TEST_COLOR_FORMAT_SHIFT,
+ DP_TEST_COLOR_FORMAT_MASK);
+
+ switch (color_format) {
+ case MTK_DP_COLOR_FORMAT_YUV_422:
+ val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422;
+ break;
+ case MTK_DP_COLOR_FORMAT_YUV_420:
+ val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420;
+ break;
+ case MTK_DP_COLOR_FORMAT_YONLY:
+ case MTK_DP_COLOR_FORMAT_RAW:
+ case MTK_DP_COLOR_FORMAT_RESERVED:
+ case MTK_DP_COLOR_FORMAT_UNKNOWN:
+ drm_warn(mtk_dp->drm_dev, "Unsupported color format: %d\n",
+ color_format);
+ fallthrough;
+ case MTK_DP_COLOR_FORMAT_RGB_444:
+ case MTK_DP_COLOR_FORMAT_YUV_444:
+ val = PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB;
+ break;
+ }
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val,
+ PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_color_depth(struct mtk_dp *mtk_dp,
+ enum mtk_dp_color_depth color_depth)
+{
+ u32 val;
+
+ mtk_dp->info.depth = color_depth;
+
+ // Update MISC0
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3034,
+ color_depth << DP_TEST_BIT_DEPTH_SHIFT,
+ DP_TEST_BIT_DEPTH_MASK);
+
+ switch (color_depth) {
+ case MTK_DP_COLOR_DEPTH_6BIT:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT;
+ break;
+ case MTK_DP_COLOR_DEPTH_8BIT:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT;
+ break;
+ case MTK_DP_COLOR_DEPTH_10BIT:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT;
+ break;
+ case MTK_DP_COLOR_DEPTH_12BIT:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT;
+ break;
+ case MTK_DP_COLOR_DEPTH_16BIT:
+ val = VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT;
+ break;
+ case MTK_DP_COLOR_DEPTH_UNKNOWN:
+ drm_warn(mtk_dp->drm_dev, "Unsupported color depth %d\n",
+ color_depth);
+ return;
+ }
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C, val,
+ VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_mn_overwrite_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, 0,
+ VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_set_sram_read_start(struct mtk_dp *mtk_dp, u32 val)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+ val << SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT,
+ SRAM_START_READ_THRD_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_setup_encoder(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_303C,
+ BIT(VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT),
+ VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040,
+ 0x20 << SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT,
+ SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
+ 0x20 << SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT,
+ SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3300,
+ 2 << VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT,
+ VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364,
+ 4 << FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT,
+ FIFO_READ_START_POINT_DP_ENC1_P0_MASK);
+ mtk_dp_write(mtk_dp, MTK_DP_ENC1_P0_3368,
+ 1 << VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT |
+ 1 << VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT |
+ BIT(SDP_DP13_EN_DP_ENC1_P0_SHIFT) |
+ 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT);
+}
+
+static void mtk_dp_pg_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3038, 0,
+ VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31B0, BIT(6), BIT(6));
+}
+
+static void mtk_dp_audio_setup_channels(struct mtk_dp *mtk_dp,
+ struct mtk_dp_audio_cfg *cfg)
+{
+ u32 channel_enable_bits;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3324,
+ AUDIO_SOURCE_MUX_DP_ENC1_P0_DPRX,
+ AUDIO_SOURCE_MUX_DP_ENC1_P0_MASK);
+
+ //audio channel count change reset
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_33F4, BIT(9), BIT(9));
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3304,
+ AU_PRTY_REGEN_DP_ENC1_P0_MASK,
+ AU_PRTY_REGEN_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3304,
+ AU_CH_STS_REGEN_DP_ENC1_P0_MASK,
+ AU_CH_STS_REGEN_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3304,
+ AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK,
+ AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK);
+
+ switch (cfg->channels) {
+ case 2:
+ channel_enable_bits = AUDIO_2CH_SEL_DP_ENC0_P0_MASK |
+ AUDIO_2CH_EN_DP_ENC0_P0_MASK;
+ break;
+ case 8:
+ default:
+ channel_enable_bits = AUDIO_8CH_SEL_DP_ENC0_P0_MASK |
+ AUDIO_8CH_EN_DP_ENC0_P0_MASK;
+ break;
+ }
+ mtk_dp_update_bits(
+ mtk_dp, MTK_DP_ENC0_P0_3088,
+ channel_enable_bits | AU_EN_DP_ENC0_P0_MASK,
+ AUDIO_2CH_SEL_DP_ENC0_P0_MASK | AUDIO_2CH_EN_DP_ENC0_P0_MASK |
+ AUDIO_8CH_SEL_DP_ENC0_P0_MASK |
+ AUDIO_8CH_EN_DP_ENC0_P0_MASK | AU_EN_DP_ENC0_P0_MASK);
+
+ //audio channel count change reset
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_33F4, 0, BIT(9));
+
+ //enable audio reset
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_33F4, BIT(0), BIT(0));
+}
+
+static void mtk_dp_audio_channel_status_set(struct mtk_dp *mtk_dp,
+ struct mtk_dp_audio_cfg *cfg)
+{
+ union mtk_dp_audio_channel_status channel_status;
+
+ memset(&channel_status, 0, sizeof(channel_status));
+
+ switch (cfg->sample_rate) {
+ case 32000:
+ channel_status.iec.sampling_freq = 3;
+ break;
+ case 44100:
+ channel_status.iec.sampling_freq = 0;
+ break;
+ case 48000:
+ channel_status.iec.sampling_freq = 2;
+ break;
+ case 88200:
+ channel_status.iec.sampling_freq = 8;
+ break;
+ case 96000:
+ channel_status.iec.sampling_freq = 0xA;
+ break;
+ case 192000:
+ channel_status.iec.sampling_freq = 0xE;
+ break;
+ default:
+ channel_status.iec.sampling_freq = 0x1;
+ break;
+ }
+
+ switch (cfg->word_length_bits) {
+ case 16:
+ channel_status.iec.word_len = 0x02;
+ break;
+ case 20:
+ channel_status.iec.word_len = 0x03;
+ break;
+ case 24:
+ channel_status.iec.word_len = 0x0B;
+ break;
+ }
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_308C,
+ channel_status.buf[1] << 8 | channel_status.buf[0],
+ CH_STATUS_0_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3090,
+ channel_status.buf[3] << 8 | channel_status.buf[2],
+ CH_STATUS_1_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3094, channel_status.buf[4],
+ CH_STATUS_2_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_audio_sdp_asp_set_channels(struct mtk_dp *mtk_dp,
+ int channels)
+{
+ if (channels != 2 && channels != 8)
+ channels = 8;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_312C,
+ (channels - 1) << ASP_HB3_DP_ENC0_P0_SHIFT,
+ ASP_HB2_DP_ENC0_P0_MASK | ASP_HB3_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_audio_set_divider(struct mtk_dp *mtk_dp, u8 divider)
+{
+ mtk_dp_update_bits(
+ mtk_dp, MTK_DP_ENC0_P0_30BC,
+ divider << AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT,
+ AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK);
+}
+
+static bool mtk_dp_plug_state(struct mtk_dp *mtk_dp)
+{
+ return !!(mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3414) &
+ HPD_DB_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_sdp_trigger_packet(struct mtk_dp *mtk_dp,
+ enum mtk_dp_sdp_type type)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280, type,
+ SDP_PACKET_TYPE_DP_ENC1_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280, SDP_PACKET_W_DP_ENC1_P0,
+ SDP_PACKET_W_DP_ENC1_P0);
+}
+
+static void mtk_dp_sdp_set_data(struct mtk_dp *mtk_dp, u8 *data_bytes)
+{
+ mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_ENC1_P0_3200, data_bytes, 0x10);
+}
+
+static void mtk_dp_sdp_set_header(struct mtk_dp *mtk_dp,
+ enum mtk_dp_sdp_type type, u8 *header_bytes)
+{
+ u32 db_addr;
+
+ switch (type) {
+ case MTK_DP_SDP_DRM:
+ db_addr = MTK_DP_ENC0_P0_3138;
+ break;
+ case MTK_DP_SDP_PPS0:
+ case MTK_DP_SDP_PPS1:
+ case MTK_DP_SDP_PPS2:
+ case MTK_DP_SDP_PPS3:
+ db_addr = MTK_DP_ENC0_P0_3130;
+ break;
+ default:
+ db_addr = MTK_DP_ENC0_P0_30D8 + (type - MTK_DP_SDP_ACM) * 8;
+ }
+
+ mtk_dp_bulk_16bit_write(mtk_dp, db_addr, header_bytes, 4);
+}
+
+static const u32 mtk_dp_sdp_type_to_reg[MTK_DP_SDP_MAX_NUM] = {
+ /* MTK_DP_SDP_NONE => */ 0x0,
+ /* MTK_DP_SDP_ACM => */ MTK_DP_ENC0_P0_30B4,
+ /* MTK_DP_SDP_ISRC => */ MTK_DP_ENC0_P0_30B4 + 1,
+ /* MTK_DP_SDP_AVI => */ MTK_DP_ENC0_P0_30A4 + 1,
+ /* MTK_DP_SDP_AUI => */ MTK_DP_ENC0_P0_30A8,
+ /* MTK_DP_SDP_SPD => */ MTK_DP_ENC0_P0_30A8 + 1,
+ /* MTK_DP_SDP_MPEG => */ MTK_DP_ENC0_P0_30AC,
+ /* MTK_DP_SDP_NTSC => */ MTK_DP_ENC0_P0_30AC + 1,
+ /* MTK_DP_SDP_VSP => */ MTK_DP_ENC0_P0_30B0,
+ /* MTK_DP_SDP_VSC => */ MTK_DP_ENC0_P0_30B8,
+ /* MTK_DP_SDP_EXT => */ MTK_DP_ENC0_P0_30B0 + 1,
+ /* MTK_DP_SDP_PPS0 => */ MTK_DP_ENC0_P0_31E8,
+ /* MTK_DP_SDP_PPS1 => */ MTK_DP_ENC0_P0_31E8,
+ /* MTK_DP_SDP_PPS2 => */ MTK_DP_ENC0_P0_31E8,
+ /* MTK_DP_SDP_PPS3 => */ MTK_DP_ENC0_P0_31E8,
+ /* MTK_DP_SDP_DRM => */ MTK_DP_ENC0_P0_31DC,
+};
+
+static void mtk_dp_disable_sdp(struct mtk_dp *mtk_dp,
+ enum mtk_dp_sdp_type type)
+{
+ if (type == MTK_DP_SDP_NONE)
+ return;
+
+ // Disable periodic send
+ mtk_dp_update_bits(mtk_dp, mtk_dp_sdp_type_to_reg[type], 0, 0xFF);
+}
+
+static void mtk_dp_setup_sdp(struct mtk_dp *mtk_dp,
+ struct mtk_dp_sdp_packet *packet)
+{
+ mtk_dp_sdp_set_data(mtk_dp, packet->data);
+ mtk_dp_sdp_set_header(mtk_dp, packet->type, packet->header);
+
+ mtk_dp_disable_sdp(mtk_dp, packet->type);
+
+ switch (packet->type) {
+ case MTK_DP_SDP_NONE:
+ break;
+ case MTK_DP_SDP_ISRC:
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC,
+ 0x1C << ISRC1_HB3_DP_ENC0_P0_SHIFT,
+ ISRC1_HB3_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280, MTK_DP_SDP_ISRC,
+ SDP_PACKET_TYPE_DP_ENC1_P0_MASK);
+
+ if (packet->header[3] & BIT(2))
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30BC,
+ BIT(ISRC_CONT_DP_ENC0_P0_SHIFT),
+ ISRC_CONT_DP_ENC0_P0_MASK);
+ else
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30BC, 0,
+ ISRC_CONT_DP_ENC0_P0_MASK);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3280,
+ SDP_PACKET_W_DP_ENC1_P0,
+ SDP_PACKET_W_DP_ENC1_P0);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30B4,
+ 5 << ISRC_CFG_DP_ENC0_P0_SHIFT,
+ ISRC_CFG_DP_ENC0_P0_MASK);
+ break;
+ case MTK_DP_SDP_DRM:
+ mtk_dp_sdp_trigger_packet(mtk_dp, packet->type);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31DC,
+ 5 << HDR0_CFG_DP_ENC0_P0_SHIFT,
+ HDR0_CFG_DP_ENC0_P0_MASK);
+ break;
+ case MTK_DP_SDP_ACM:
+ case MTK_DP_SDP_AVI:
+ case MTK_DP_SDP_AUI:
+ case MTK_DP_SDP_SPD:
+ case MTK_DP_SDP_MPEG:
+ case MTK_DP_SDP_NTSC:
+ case MTK_DP_SDP_VSP:
+ case MTK_DP_SDP_VSC:
+ case MTK_DP_SDP_EXT:
+ case MTK_DP_SDP_PPS0:
+ case MTK_DP_SDP_PPS1:
+ case MTK_DP_SDP_PPS2:
+ case MTK_DP_SDP_PPS3:
+ mtk_dp_sdp_trigger_packet(mtk_dp, packet->type);
+ // Enable periodic sending
+ mtk_dp_update_bits(mtk_dp, mtk_dp_sdp_type_to_reg[packet->type],
+ 0x05, 0xff);
+ break;
+ default:
+ break;
+ }
+}
+
+static void mtk_dp_sdp_vsc_ext_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30A0, 0,
+ BIT(7) | BIT(8) | BIT(12));
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_328C, 0, BIT(7));
+}
+
+static void mtk_dp_aux_irq_clear(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_write(
+ mtk_dp, MTK_DP_AUX_P0_3640,
+ BIT(AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT) |
+ BIT(AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT));
+}
+
+static void mtk_dp_aux_set_cmd(struct mtk_dp *mtk_dp, u8 cmd, u32 addr)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3644, cmd,
+ MCU_REQUEST_COMMAND_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3648, addr,
+ MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_364C, addr >> 16,
+ MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_cmd_complete(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
+ BIT(MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT),
+ MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK |
+ PHY_FIFO_RST_AUX_TX_P0_MASK |
+ MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_request_ready(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3630,
+ BIT(AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT),
+ AUX_TX_REQUEST_READY_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_aux_fill_write_fifo(struct mtk_dp *mtk_dp, u8 *buf,
+ size_t length)
+{
+ mtk_dp_bulk_16bit_write(mtk_dp, MTK_DP_AUX_P0_3708, buf, length);
+}
+
+static void mtk_dp_aux_read_rx_fifo(struct mtk_dp *mtk_dp, u8 *buf,
+ size_t length, int read_delay)
+{
+ int read_pos;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620, 0,
+ AUX_RD_MODE_AUX_TX_P0_MASK);
+
+ for (read_pos = 0; read_pos < length; read_pos++) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3620,
+ BIT(AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT),
+ AUX_RX_FIFO_READ_PULSE_TX_P0_MASK);
+ udelay(read_delay);
+ buf[read_pos] =
+ (u8)(mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3620) &
+ AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK >>
+ AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT);
+ }
+}
+
+static void mtk_dp_aux_set_length(struct mtk_dp *mtk_dp, size_t length)
+{
+ if (length > 0) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3650,
+ (length - 1)
+ << MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT,
+ MCU_REQ_DATA_NUM_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, 0,
+ AUX_NO_LENGTH_AUX_TX_P0_MASK |
+ AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+ AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+ } else {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C,
+ BIT(AUX_NO_LENGTH_AUX_TX_P0_SHIFT),
+ AUX_NO_LENGTH_AUX_TX_P0_MASK |
+ AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+ AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+ }
+}
+
+static int mtk_dp_aux_wait_for_completion(struct mtk_dp *mtk_dp, bool is_read)
+{
+ int wait_reply = MTK_DP_AUX_WAIT_REPLY_COUNT;
+
+ while (--wait_reply) {
+ u32 aux_irq_status;
+
+ if (is_read) {
+ u32 fifo_status =
+ mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3618);
+
+ if (fifo_status &
+ (AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK |
+ AUX_RX_FIFO_FULL_AUX_TX_P0_MASK)) {
+ return 0;
+ }
+ }
+
+ aux_irq_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3640);
+ if (aux_irq_status & AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK)
+ return 0;
+
+ if (aux_irq_status & AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK)
+ return -ETIMEDOUT;
+
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd,
+ u32 addr, u8 *buf, size_t length)
+{
+ int ret;
+ u32 reply_cmd;
+
+ if (is_read && (length > DP_AUX_MAX_PAYLOAD_BYTES ||
+ (cmd == DP_AUX_NATIVE_READ && !length)))
+ return -EINVAL;
+
+ if (!is_read)
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3704,
+ BIT(AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT),
+ AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK);
+
+ mtk_dp_aux_cmd_complete(mtk_dp);
+ mtk_dp_aux_irq_clear(mtk_dp);
+ udelay(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US);
+
+ mtk_dp_aux_set_cmd(mtk_dp, cmd, addr);
+ mtk_dp_aux_set_length(mtk_dp, length);
+
+ if (!is_read) {
+ if (length)
+ mtk_dp_aux_fill_write_fifo(mtk_dp, buf, length);
+
+ mtk_dp_update_bits(
+ mtk_dp, MTK_DP_AUX_P0_3704,
+ AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK,
+ AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK);
+ }
+
+ mtk_dp_aux_request_ready(mtk_dp);
+
+ ret = mtk_dp_aux_wait_for_completion(mtk_dp, is_read);
+
+ reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) &
+ AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK;
+ if (ret || reply_cmd) {
+ u32 phy_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3628) &
+ AUX_RX_PHY_STATE_AUX_TX_P0_MASK;
+ if (phy_status != AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE) {
+ drm_err(mtk_dp->drm_dev,
+ "AUX Rx Aux hang, need SW reset\n");
+ ret = -EIO;
+ }
+
+ mtk_dp_aux_cmd_complete(mtk_dp);
+ mtk_dp_aux_irq_clear(mtk_dp);
+
+ udelay(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US);
+ return ret;
+ }
+
+ if (!length) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_362C, 0,
+ AUX_NO_LENGTH_AUX_TX_P0_MASK |
+ AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK |
+ AUX_RESERVED_RW_0_AUX_TX_P0_MASK);
+ } else if (is_read) {
+ int read_delay;
+
+ if (cmd == (DP_AUX_I2C_READ | DP_AUX_I2C_MOT) ||
+ cmd == DP_AUX_I2C_READ)
+ read_delay = 500;
+ else
+ read_delay = 100;
+
+ mtk_dp_aux_read_rx_fifo(mtk_dp, buf, length, read_delay);
+ }
+
+ mtk_dp_aux_cmd_complete(mtk_dp);
+ mtk_dp_aux_irq_clear(mtk_dp);
+ udelay(MTK_DP_AUX_WRITE_READ_WAIT_TIME_US);
+
+ return 0;
+}
+
+static bool mtk_dp_set_swing_pre_emphasis(struct mtk_dp *mtk_dp, int lane_num,
+ int swingValue, int preEmphasis)
+{
+ u32 lane_shift = lane_num * DP_TX1_VOLT_SWING_SHIFT;
+
+ if (lane_num < 0 || lane_num > 3)
+ return false;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+ swingValue << (DP_TX0_VOLT_SWING_SHIFT + lane_shift),
+ DP_TX0_VOLT_SWING_MASK << lane_shift);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP,
+ preEmphasis << (DP_TX0_PRE_EMPH_SHIFT + lane_shift),
+ DP_TX0_PRE_EMPH_MASK << lane_shift);
+
+ return true;
+}
+
+static void mtk_dp_reset_swing_pre_emphasis(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_SWING_EMP, 0,
+ DP_TX0_VOLT_SWING_MASK | DP_TX1_VOLT_SWING_MASK |
+ DP_TX2_VOLT_SWING_MASK |
+ DP_TX3_VOLT_SWING_MASK |
+ DP_TX0_PRE_EMPH_MASK | DP_TX1_PRE_EMPH_MASK |
+ DP_TX2_PRE_EMPH_MASK | DP_TX3_PRE_EMPH_MASK);
+}
+
+static void mtk_dp_fec_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540,
+ enable ? BIT(FEC_EN_DP_TRANS_P0_SHIFT) : 0,
+ FEC_EN_DP_TRANS_P0_MASK);
+}
+
+static u32 mtk_dp_swirq_get_clear(struct mtk_dp *mtk_dp)
+{
+ u32 irq_status = mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_35D0) &
+ SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK;
+
+ if (irq_status) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8, irq_status,
+ SW_IRQ_CLR_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35C8, 0,
+ SW_IRQ_CLR_DP_TRANS_P0_MASK);
+ }
+
+ return irq_status;
+}
+
+static u32 mtk_dp_hwirq_get_clear(struct mtk_dp *mtk_dp)
+{
+ u8 irq_status = (mtk_dp_read(mtk_dp, MTK_DP_TRANS_P0_3418) &
+ IRQ_STATUS_DP_TRANS_P0_MASK) >>
+ IRQ_STATUS_DP_TRANS_P0_SHIFT;
+
+ if (irq_status) {
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, irq_status,
+ IRQ_CLR_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, 0,
+ IRQ_CLR_DP_TRANS_P0_MASK);
+ }
+
+ return irq_status;
+}
+
+static void mtk_dp_hwirq_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+ u32 val = 0;
+
+ if (!enable)
+ val = IRQ_MASK_DP_TRANS_P0_DISC_IRQ |
+ IRQ_MASK_DP_TRANS_P0_CONN_IRQ |
+ IRQ_MASK_DP_TRANS_P0_INT_IRQ;
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3418, val,
+ IRQ_MASK_DP_TRANS_P0_MASK);
+}
+
+void mtk_dp_initialize_settings(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_342C,
+ XTAL_FREQ_DP_TRANS_P0_DEFAULT,
+ XTAL_FREQ_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3540,
+ BIT(FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT),
+ FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_31EC,
+ BIT(AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT),
+ AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C, 0,
+ SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_IRQ_MASK, IRQ_MASK_AUX_TOP_IRQ,
+ IRQ_MASK_AUX_TOP_IRQ);
+}
+
+static void mtk_dp_initialize_hpd_detect_settings(struct mtk_dp *mtk_dp)
+{
+ // Debounce threshold
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+ 8 << HPD_DEB_THD_DP_TRANS_P0_SHIFT,
+ HPD_DEB_THD_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+ (HPD_INT_THD_DP_TRANS_P0_LOWER_500US |
+ HPD_INT_THD_DP_TRANS_P0_UPPER_1100US)
+ << HPD_INT_THD_DP_TRANS_P0_SHIFT,
+ HPD_INT_THD_DP_TRANS_P0_MASK);
+
+ // Connect threshold 1.5ms + 5 x 0.1ms = 2ms
+ // Disconnect threshold 1.5ms + 5 x 0.1ms = 2ms
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3410,
+ (5 << HPD_DISC_THD_DP_TRANS_P0_SHIFT) |
+ (5 << HPD_CONN_THD_DP_TRANS_P0_SHIFT),
+ HPD_DISC_THD_DP_TRANS_P0_MASK |
+ HPD_CONN_THD_DP_TRANS_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3430,
+ HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT,
+ HPD_INT_THD_ECO_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_initialize_phy_settings(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP,
+ DP_PWR_STATE_MASK);
+ mtk_dp_write(mtk_dp, DP_PHY_DIG_BIT_RATE, 0);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+ DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK);
+
+ mtk_dp_write(mtk_dp, MTK_DP_LANE0_DRIVING_PARAM_3,
+ DRIVING_PARAM_3_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE1_DRIVING_PARAM_3,
+ DRIVING_PARAM_3_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE2_DRIVING_PARAM_3,
+ DRIVING_PARAM_3_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE3_DRIVING_PARAM_3,
+ DRIVING_PARAM_3_DEFAULT);
+
+ mtk_dp_write(mtk_dp, MTK_DP_LANE0_DRIVING_PARAM_4,
+ DRIVING_PARAM_4_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE1_DRIVING_PARAM_4,
+ DRIVING_PARAM_4_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE2_DRIVING_PARAM_4,
+ DRIVING_PARAM_4_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE3_DRIVING_PARAM_4,
+ DRIVING_PARAM_4_DEFAULT);
+
+ mtk_dp_write(mtk_dp, MTK_DP_LANE0_DRIVING_PARAM_5,
+ DRIVING_PARAM_5_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE1_DRIVING_PARAM_5,
+ DRIVING_PARAM_5_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE2_DRIVING_PARAM_5,
+ DRIVING_PARAM_5_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE3_DRIVING_PARAM_5,
+ DRIVING_PARAM_5_DEFAULT);
+
+ mtk_dp_write(mtk_dp, MTK_DP_LANE0_DRIVING_PARAM_6,
+ DRIVING_PARAM_6_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE1_DRIVING_PARAM_6,
+ DRIVING_PARAM_6_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE2_DRIVING_PARAM_6,
+ DRIVING_PARAM_6_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE3_DRIVING_PARAM_6,
+ DRIVING_PARAM_6_DEFAULT);
+
+ mtk_dp_write(mtk_dp, MTK_DP_LANE0_DRIVING_PARAM_7,
+ DRIVING_PARAM_7_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE1_DRIVING_PARAM_7,
+ DRIVING_PARAM_7_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE2_DRIVING_PARAM_7,
+ DRIVING_PARAM_7_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE3_DRIVING_PARAM_7,
+ DRIVING_PARAM_7_DEFAULT);
+
+ mtk_dp_write(mtk_dp, MTK_DP_LANE0_DRIVING_PARAM_8,
+ DRIVING_PARAM_8_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE1_DRIVING_PARAM_8,
+ DRIVING_PARAM_8_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE2_DRIVING_PARAM_8,
+ DRIVING_PARAM_8_DEFAULT);
+ mtk_dp_write(mtk_dp, MTK_DP_LANE3_DRIVING_PARAM_8,
+ DRIVING_PARAM_8_DEFAULT);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3690,
+ BIT(RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT),
+ RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_initialize_aux_settings(struct mtk_dp *mtk_dp)
+{
+ // modify timeout threshold = 1595 [12 : 8]
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_360C, 0x1595,
+ AUX_TIMEOUT_THR_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3658, 0,
+ AUX_TX_OV_EN_AUX_TX_P0_MASK);
+ // 25 for 26M
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3634,
+ 25 << AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT,
+ AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK);
+ // 13 for 26M
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_3614,
+ 13 << AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT,
+ AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_AUX_P0_37C8,
+ BIT(MTK_ATOP_EN_AUX_TX_P0_SHIFT),
+ MTK_ATOP_EN_AUX_TX_P0_MASK);
+}
+
+static void mtk_dp_initialize_digital_settings(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_304C, 0,
+ VBID_VIDEO_MUTE_DP_ENC0_P0_MASK);
+ mtk_dp_set_color_format(mtk_dp, MTK_DP_COLOR_FORMAT_RGB_444);
+ mtk_dp_set_color_depth(mtk_dp, MTK_DP_COLOR_DEPTH_8BIT);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3368,
+ 1 << BS2BS_MODE_DP_ENC1_P0_SHIFT,
+ BS2BS_MODE_DP_ENC1_P0_MASK);
+
+ // dp tx encoder reset all sw
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004,
+ BIT(DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT),
+ DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK);
+ mdelay(1);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3004, 0,
+ DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_ssc_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP,
+ DP_PWR_STATE_MASK);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_DIG_PLL_CTL_1,
+ enable ? TPLL_SSC_EN : 0, TPLL_SSC_EN);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+ DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK);
+
+ udelay(50);
+}
+
+
+static void mtk_dp_digital_sw_reset(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C,
+ BIT(DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT),
+ DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK);
+ mdelay(1);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_340C, 0,
+ DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK);
+}
+
+
+static void mtk_dp_phyd_reset(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, DP_PHY_DIG_SW_RST, 0, DP_GLB_SW_RST_PHYD);
+ udelay(50);
+ mtk_dp_update_bits(mtk_dp, DP_PHY_DIG_SW_RST, DP_GLB_SW_RST_PHYD,
+ DP_GLB_SW_RST_PHYD);
+}
+
+static void mtk_dp_set_lanes(struct mtk_dp *mtk_dp, int lanes)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_35F0,
+ lanes == 0 ? 0 : BIT(3), BIT(3) | BIT(2));
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, lanes,
+ LANE_NUM_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_34A4,
+ lanes << LANE_NUM_DP_TRANS_P0_SHIFT,
+ LANE_NUM_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_set_tx_rate(struct mtk_dp *mtk_dp,
+ enum mtk_dp_linkrate linkrate)
+{
+ u32 val;
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE, DP_PWR_STATE_BANDGAP,
+ DP_PWR_STATE_MASK);
+
+ switch (linkrate) {
+ default:
+ drm_err(mtk_dp->drm_dev,
+ "Implementation error, unknown linkrate %x\n",
+ linkrate);
+ fallthrough;
+ case MTK_DP_LINKRATE_RBR:
+ val = BIT_RATE_RBR;
+ break;
+ case MTK_DP_LINKRATE_HBR:
+ val = BIT_RATE_HBR;
+ break;
+ case MTK_DP_LINKRATE_HBR2:
+ val = BIT_RATE_HBR2;
+ break;
+ case MTK_DP_LINKRATE_HBR3:
+ val = BIT_RATE_HBR3;
+ break;
+ }
+ mtk_dp_write(mtk_dp, DP_PHY_DIG_BIT_RATE, val);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_PWR_STATE,
+ DP_PWR_STATE_BANDGAP_TPLL_LANE, DP_PWR_STATE_MASK);
+}
+
+static void mtk_dp_set_idle_pattern(struct mtk_dp *mtk_dp, bool enable)
+{
+ const u32 val = POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK |
+ POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK |
+ POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK |
+ POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK;
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3580, enable ? val : 0, val);
+}
+
+static void mtk_dp_train_set_pattern(struct mtk_dp *mtk_dp, int pattern)
+{
+ if (pattern < 0 || pattern > 4) {
+ drm_err(mtk_dp->drm_dev,
+ "Implementation error, no such pattern %d\n", pattern);
+ return;
+ }
+
+ if (pattern == 1) // TPS1
+ mtk_dp_set_idle_pattern(mtk_dp, false);
+
+ mtk_dp_update_bits(
+ mtk_dp, MTK_DP_TRANS_P0_3400,
+ pattern ? BIT(pattern - 1) << PATTERN1_EN_DP_TRANS_P0_SHIFT : 0,
+ PATTERN1_EN_DP_TRANS_P0_MASK |
+ PATTERN2_EN_DP_TRANS_P0_MASK |
+ PATTERN3_EN_DP_TRANS_P0_MASK |
+ PATTERN4_EN_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_set_enhanced_frame_mode(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000,
+ enable ? BIT(ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT) : 0,
+ ENHANCED_FRAME_EN_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_training_set_scramble(struct mtk_dp *mtk_dp, bool enable)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TRANS_P0_3404,
+ enable ? DP_SCR_EN_DP_TRANS_P0_MASK : 0,
+ DP_SCR_EN_DP_TRANS_P0_MASK);
+}
+
+static void mtk_dp_video_mute(struct mtk_dp *mtk_dp, bool enable)
+{
+ u32 val = BIT(VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT);
+
+ if (enable)
+ val |= BIT(VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3000, val,
+ VIDEO_MUTE_SEL_DP_ENC0_P0_MASK |
+ VIDEO_MUTE_SW_DP_ENC0_P0_MASK);
+
+ if (mtk_dp->driver_data->is_edp)
+ mtk_dp_sip_atf_call(MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE, enable);
+ else
+ mtk_dp_sip_atf_call(MTK_DP_SIP_ATF_VIDEO_UNMUTE, enable);
+}
+
+static void mtk_dp_audio_mute(struct mtk_dp *mtk_dp, bool mute)
+{
+ if (mute) {
+ mtk_dp_update_bits(
+ mtk_dp, MTK_DP_ENC0_P0_3030,
+ BIT(VBID_AUDIO_MUTE_SW_DP_ENC0_P0_SHIFT) |
+ BIT(VBID_AUDIO_MUTE_SEL_DP_ENC0_P0_SHIFT),
+ VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK |
+ VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3088, 0,
+ AU_EN_DP_ENC0_P0_MASK);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30A4, 0,
+ AU_TS_CFG_DP_ENC0_P0_MASK);
+
+ } else {
+ mtk_dp_update_bits(
+ mtk_dp, MTK_DP_ENC0_P0_3030, 0,
+ VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK |
+ VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK);
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3088,
+ BIT(AU_EN_DP_ENC0_P0_SHIFT),
+ AU_EN_DP_ENC0_P0_MASK);
+ // Send one every two frames
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30A4, 0x0F,
+ AU_TS_CFG_DP_ENC0_P0_MASK);
+ }
+}
+
+static void mtk_dp_power_enable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE, 0,
+ SW_RST_B_PHYD);
+ udelay(10);
+ mtk_dp_update_bits(mtk_dp, MTK_DP_TOP_RESET_AND_PROBE, SW_RST_B_PHYD,
+ SW_RST_B_PHYD);
+}
+
+static void mtk_dp_power_disable(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_write(mtk_dp, MTK_DP_TOP_PWR_STATE, 0);
+ udelay(10);
+ mtk_dp_write(mtk_dp, 0x0034, 0x4AA);
+ mtk_dp_write(mtk_dp, 0x1040, 0x0);
+ mtk_dp_write(mtk_dp, MTK_DP_TOP_MEM_PD,
+ 0x550 | BIT(FUSE_SEL_SHIFT) | BIT(MEM_ISO_EN_SHIFT));
+}
+
+static void mtk_dp_initialize_priv_data(struct mtk_dp *mtk_dp)
+{
+ mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR2;
+ mtk_dp->train_info.lane_count = MTK_DP_MAX_LANES;
+ mtk_dp->train_info.irq_status = 0;
+ mtk_dp->train_info.cable_plugged_in = false;
+ mtk_dp->train_info.cable_state_change = false;
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP;
+ mtk_dp->state = MTK_DP_STATE_INITIAL;
+
+ mtk_dp->info.format = MTK_DP_COLOR_FORMAT_RGB_444;
+ mtk_dp->info.depth = MTK_DP_COLOR_DEPTH_8BIT;
+ memset(&mtk_dp->info.timings, 0,
+ sizeof(struct mtk_dp_timings));
+ mtk_dp->info.timings.frame_rate = 60;
+
+ mtk_dp->has_fec = false;
+ mtk_dp->audio_enable = false;
+}
+
+static void mtk_dp_sdp_set_down_cnt_init(struct mtk_dp *mtk_dp,
+ u32 Sram_Read_Start)
+{
+ u32 sdp_down_cnt_init = 0;
+ u32 dc_offset;
+
+ if (mtk_dp->info.timings.pix_rate_khz > 0)
+ sdp_down_cnt_init = Sram_Read_Start *
+ mtk_dp->train_info.link_rate * 2700 * 8 /
+ (mtk_dp->info.timings.pix_rate_khz * 4);
+
+ switch (mtk_dp->train_info.lane_count) {
+ case 1:
+ sdp_down_cnt_init = sdp_down_cnt_init > 0x1A ?
+ sdp_down_cnt_init : 0x1A; //26
+ break;
+ case 2:
+ // case for LowResolution && High Audio Sample Rate
+ dc_offset = mtk_dp->info.timings.vtotal <= 525 ?
+ 0x04 : 0x00;
+ sdp_down_cnt_init = sdp_down_cnt_init > 0x10 ?
+ sdp_down_cnt_init : 0x10 + dc_offset; //20 or 16
+ break;
+ case 4:
+ default:
+ sdp_down_cnt_init = sdp_down_cnt_init > 0x06 ?
+ sdp_down_cnt_init : 0x06; //6
+ break;
+ }
+
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_3040,
+ sdp_down_cnt_init
+ << SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT,
+ SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK);
+}
+
+static void mtk_dp_sdp_set_down_cnt_init_in_hblank(struct mtk_dp *mtk_dp)
+{
+ int pix_clk_mhz;
+ u32 dc_offset;
+ u32 spd_down_cnt_init = 0;
+
+ pix_clk_mhz = mtk_dp->info.format == MTK_DP_COLOR_FORMAT_YUV_420 ?
+ mtk_dp->info.timings.pix_rate_khz/2000 :
+ mtk_dp->info.timings.pix_rate_khz/1000;
+
+ switch (mtk_dp->train_info.lane_count) {
+ case 1:
+ spd_down_cnt_init = 0x20;
+ break;
+ case 2:
+ dc_offset = (mtk_dp->info.timings.vtotal <= 525) ? 0x14 : 0x00;
+ spd_down_cnt_init = 0x18 + dc_offset;
+ break;
+ case 4:
+ default:
+ dc_offset = (mtk_dp->info.timings.vtotal <= 525) ? 0x08 : 0x00;
+ if (pix_clk_mhz > mtk_dp->train_info.link_rate * 27)
+ spd_down_cnt_init = 0x8;
+ else
+ spd_down_cnt_init = 0x10 + dc_offset;
+ break;
+ }
+ mtk_dp_update_bits(mtk_dp, MTK_DP_ENC1_P0_3364, spd_down_cnt_init,
+ SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK);
+}
+
+static void mtk_dp_setup_tu(struct mtk_dp *mtk_dp)
+{
+ u32 sram_read_start = MTK_DP_TBC_BUF_READ_START_ADDR;
+
+ if (mtk_dp->train_info.lane_count > 0) {
+ sram_read_start =
+ min_t(u32, MTK_DP_TBC_BUF_READ_START_ADDR,
+ mtk_dp->info.timings.vm.hactive /
+ (mtk_dp->train_info.lane_count *
+ 4 * 2 * 2));
+ mtk_dp_set_sram_read_start(mtk_dp, sram_read_start);
+ }
+
+ mtk_dp_setup_encoder(mtk_dp);
+ mtk_dp_sdp_set_down_cnt_init_in_hblank(mtk_dp);
+ mtk_dp_sdp_set_down_cnt_init(mtk_dp, sram_read_start);
+}
+
+static void mtk_dp_calculate_pixrate(struct mtk_dp *mtk_dp)
+{
+ int ubTargetFrameRate = 60;
+ int ulTargetPixelclk;
+
+ if (mtk_dp->info.timings.frame_rate > 0) {
+ ubTargetFrameRate = mtk_dp->info.timings.frame_rate;
+ ulTargetPixelclk = (int)mtk_dp->info.timings.htotal *
+ (int)mtk_dp->info.timings.vtotal *
+ ubTargetFrameRate;
+ } else if (mtk_dp->info.timings.pix_rate_khz > 0) {
+ ulTargetPixelclk = mtk_dp->info.timings.pix_rate_khz * 1000;
+ } else {
+ ulTargetPixelclk = (int)mtk_dp->info.timings.htotal *
+ (int)mtk_dp->info.timings.vtotal *
+ ubTargetFrameRate;
+ }
+
+ if (ulTargetPixelclk > 0)
+ mtk_dp->info.timings.pix_rate_khz = ulTargetPixelclk / 1000;
+}
+
+static void mtk_dp_set_tx_out(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_msa_bypass_disable(mtk_dp);
+ mtk_dp_calculate_pixrate(mtk_dp);
+ mtk_dp_pg_disable(mtk_dp);
+ mtk_dp_setup_tu(mtk_dp);
+}
+
+static void mtk_dp_hpd_sink_event(struct mtk_dp *mtk_dp)
+{
+ ssize_t ret;
+ u8 sink_count;
+ u8 link_status[DP_LINK_STATUS_SIZE] = {};
+ u32 sink_count_reg;
+ u32 link_status_reg;
+ bool locked;
+
+ sink_count_reg = DP_SINK_COUNT_ESI;
+ link_status_reg = DP_LANE0_1_STATUS_ESI;
+
+ ret = drm_dp_dpcd_readb(&mtk_dp->aux, sink_count_reg, &sink_count);
+ if (ret < 0) {
+ drm_info(mtk_dp->drm_dev,
+ "Read sink count failed: %ld\n", ret);
+ return;
+ }
+
+ ret = drm_dp_dpcd_readb(&mtk_dp->aux, DP_SINK_COUNT, &sink_count);
+ if (ret < 0) {
+ drm_info(mtk_dp->drm_dev,
+ "Read DP_SINK_COUNT_ESI failed: %ld\n", ret);
+ return;
+ }
+
+ ret = drm_dp_dpcd_read(&mtk_dp->aux, link_status_reg, link_status,
+ sizeof(link_status));
+ if (!ret) {
+ drm_info(mtk_dp->drm_dev, "Read link status failed: %ld\n",
+ ret);
+ return;
+ }
+
+ locked = drm_dp_channel_eq_ok(link_status,
+ mtk_dp->train_info.lane_count);
+ if (!locked && mtk_dp->train_state > MTK_DP_TRAIN_STATE_TRAINING_PRE)
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING_PRE;
+
+ if (link_status[1] & DP_REMOTE_CONTROL_COMMAND_PENDING)
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DEVICE_SERVICE_IRQ_VECTOR,
+ DP_REMOTE_CONTROL_COMMAND_PENDING);
+
+ if (DP_GET_SINK_COUNT(sink_count) &&
+ (link_status[2] & DP_DOWNSTREAM_PORT_STATUS_CHANGED)) {
+ mtk_dp->train_info.check_cap_count = 0;
+ kfree(mtk_dp->edid);
+ mtk_dp->edid = NULL;
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKEDID;
+ mdelay(20);
+ }
+}
+
+static void mtk_dp_sdp_stop_sending(struct mtk_dp *mtk_dp)
+{
+ u8 packet_type;
+
+ for (packet_type = MTK_DP_SDP_ACM; packet_type < MTK_DP_SDP_MAX_NUM;
+ packet_type++)
+ mtk_dp_disable_sdp(mtk_dp, packet_type);
+
+ mtk_dp_sdp_vsc_ext_disable(mtk_dp);
+}
+
+static int mtk_dp_train_hpd_handle(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+
+ if (mtk_dp->train_info.cable_state_change) {
+ mtk_dp->train_info.cable_state_change = false;
+
+ if (!mtk_dp->train_info.cable_plugged_in ||
+ !mtk_dp_plug_state(mtk_dp)) {
+ mtk_dp_video_mute(mtk_dp, true);
+ mtk_dp_audio_mute(mtk_dp, true);
+
+ mtk_dp_initialize_priv_data(mtk_dp);
+ mtk_dp_set_idle_pattern(mtk_dp, true);
+ if (mtk_dp->has_fec)
+ mtk_dp_fec_enable(mtk_dp, false);
+ mtk_dp_sdp_stop_sending(mtk_dp);
+ mtk_dp_power_disable(mtk_dp);
+
+ clk_disable_unprepare(mtk_dp->dp_tx_clk);
+
+ kfree(mtk_dp->edid);
+ mtk_dp->edid = NULL;
+ ret = -ENODEV;
+ }
+ }
+
+ return ret;
+}
+
+static void mtk_dp_train_update_swing_pre(struct mtk_dp *mtk_dp, int lanes,
+ u8 dpcd_adjust_req[2])
+{
+ int lane;
+
+ for (lane = 0; lane < lanes; ++lane) {
+ u8 val;
+ u8 swing;
+ u8 preemphasis;
+ int index = lane / 2;
+ int shift = lane % 2 ? DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : 0;
+
+ swing = (dpcd_adjust_req[index] >> shift) &
+ DP_ADJUST_VOLTAGE_SWING_LANE0_MASK;
+ preemphasis = ((dpcd_adjust_req[index] >> shift) &
+ DP_ADJUST_PRE_EMPHASIS_LANE0_MASK) >>
+ DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT;
+ val = swing << DP_TRAIN_VOLTAGE_SWING_SHIFT |
+ preemphasis << DP_TRAIN_PRE_EMPHASIS_SHIFT;
+
+ if (swing == DP_TRAIN_VOLTAGE_SWING_LEVEL_3)
+ val |= DP_TRAIN_MAX_SWING_REACHED;
+ if (preemphasis == 3)
+ val |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
+
+ mtk_dp_set_swing_pre_emphasis(mtk_dp, lane, swing, preemphasis);
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_LANE0_SET + lane,
+ val);
+ }
+
+ // Wait for the signal to be stable enough
+ mdelay(2);
+}
+
+static void mtk_dp_read_link_status(struct mtk_dp *mtk_dp,
+ u8 link_status[DP_LINK_STATUS_SIZE])
+{
+ drm_dp_dpcd_read(&mtk_dp->aux, DP_LANE0_1_STATUS, link_status,
+ DP_LINK_STATUS_SIZE);
+}
+
+static int mtk_dp_train_flow(struct mtk_dp *mtk_dp, int link_rate,
+ int lane_count)
+{
+ u8 link_status[DP_LINK_STATUS_SIZE] = {};
+ int target_link_rate = link_rate;
+ int target_lane_count = lane_count;
+ u8 lane_adjust[2] = {};
+ bool pass_tps1 = false;
+ bool pass_tps2_3 = false;
+ int train_retries;
+ int status_control;
+ int iteration_count;
+ u8 prev_lane_adjust;
+ u8 val;
+
+ drm_dp_dpcd_readb(&mtk_dp->aux, DP_SET_POWER, &val);
+ if (val != DP_SET_POWER_D0) {
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+ mdelay(1);
+ }
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LINK_BW_SET, target_link_rate);
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
+ target_lane_count | DP_LANE_COUNT_ENHANCED_FRAME_EN);
+
+ if (mtk_dp->train_info.sink_ssc)
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_DOWNSPREAD_CTRL,
+ DP_SPREAD_AMP_0_5);
+
+ train_retries = 0;
+ status_control = 0;
+ iteration_count = 1;
+ prev_lane_adjust = 0xFF;
+
+ mtk_dp_set_lanes(mtk_dp, target_lane_count/2);
+ mtk_dp_set_tx_rate(mtk_dp, target_link_rate);
+
+ do {
+ train_retries++;
+ if (!mtk_dp->train_info.cable_plugged_in ||
+ ((mtk_dp->train_info.irq_status &
+ MTK_DP_HPD_DISCONNECT) != 0x0)) {
+ return -ENODEV;
+ }
+
+ if (mtk_dp->train_state < MTK_DP_TRAIN_STATE_TRAINING)
+ return -EAGAIN;
+
+ if (!pass_tps1) {
+ mtk_dp_training_set_scramble(mtk_dp, false);
+
+ if (status_control == 0) {
+ status_control = 1;
+ mtk_dp_train_set_pattern(mtk_dp, 1);
+ val = DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_1;
+ drm_dp_dpcd_writeb(
+ &mtk_dp->aux, DP_TRAINING_PATTERN_SET,
+ DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_1);
+ drm_dp_dpcd_read(&mtk_dp->aux,
+ DP_ADJUST_REQUEST_LANE0_1,
+ lane_adjust,
+ sizeof(lane_adjust));
+ iteration_count++;
+
+ mtk_dp_train_update_swing_pre(mtk_dp,
+ target_lane_count, lane_adjust);
+ }
+
+ drm_dp_link_train_clock_recovery_delay(&mtk_dp->aux,
+ mtk_dp->rx_cap);
+ mtk_dp_read_link_status(mtk_dp, link_status);
+
+ if (drm_dp_clock_recovery_ok(link_status,
+ target_lane_count)) {
+ mtk_dp->train_info.cr_done = true;
+ pass_tps1 = true;
+ train_retries = 0;
+ iteration_count = 1;
+ } else if (prev_lane_adjust == link_status[4]) {
+ iteration_count++;
+ if (prev_lane_adjust &
+ DP_ADJUST_VOLTAGE_SWING_LANE0_MASK)
+ break;
+ } else {
+ prev_lane_adjust = link_status[4];
+ }
+ } else if (pass_tps1 && !pass_tps2_3) {
+ if (status_control == 1) {
+ status_control = 2;
+ if (mtk_dp->train_info.tps4) {
+ mtk_dp_train_set_pattern(mtk_dp, 4);
+ val = DP_TRAINING_PATTERN_4;
+ } else if (mtk_dp->train_info.tps3) {
+ mtk_dp_train_set_pattern(mtk_dp, 3);
+ val = DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_3;
+ } else {
+ mtk_dp_train_set_pattern(mtk_dp, 2);
+ val = DP_LINK_SCRAMBLING_DISABLE |
+ DP_TRAINING_PATTERN_2;
+ }
+ drm_dp_dpcd_writeb(&mtk_dp->aux,
+ DP_TRAINING_PATTERN_SET,
+ val);
+
+ drm_dp_dpcd_read(&mtk_dp->aux,
+ DP_ADJUST_REQUEST_LANE0_1,
+ lane_adjust,
+ sizeof(lane_adjust));
+
+ iteration_count++;
+ mtk_dp_train_update_swing_pre(
+ mtk_dp, target_lane_count, lane_adjust);
+ }
+
+ drm_dp_link_train_channel_eq_delay(&mtk_dp->aux,
+ mtk_dp->rx_cap);
+
+ mtk_dp_read_link_status(mtk_dp, link_status);
+
+ if (!drm_dp_clock_recovery_ok(link_status,
+ target_lane_count)) {
+ mtk_dp->train_info.cr_done = false;
+ mtk_dp->train_info.eq_done = false;
+ break;
+ }
+
+ if (drm_dp_channel_eq_ok(link_status,
+ target_lane_count)) {
+ mtk_dp->train_info.eq_done = true;
+ pass_tps2_3 = true;
+ break;
+ }
+
+ if (prev_lane_adjust == link_status[4])
+ iteration_count++;
+ else
+ prev_lane_adjust = link_status[4];
+ }
+ } while (train_retries < MTK_DP_TRAIN_RETRY_LIMIT &&
+ iteration_count < MTK_DP_TRAIN_MAX_ITERATIONS);
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_TRAINING_PATTERN_SET,
+ DP_TRAINING_PATTERN_DISABLE);
+ mtk_dp_train_set_pattern(mtk_dp, 0);
+
+ if (pass_tps2_3) {
+ mtk_dp->train_info.link_rate = target_link_rate;
+ mtk_dp->train_info.lane_count = target_lane_count;
+
+ mtk_dp_training_set_scramble(mtk_dp, true);
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_LANE_COUNT_SET,
+ target_lane_count |
+ DP_LANE_COUNT_ENHANCED_FRAME_EN);
+ mtk_dp_set_enhanced_frame_mode(mtk_dp, true);
+
+ return 0;
+ }
+
+ return -ETIMEDOUT;
+}
+
+static void mtk_dp_fec_set_capabilities(struct mtk_dp *mtk_dp)
+{
+ u8 fec_capabilities;
+
+ drm_dp_dpcd_readb(&mtk_dp->aux, DP_FEC_CAPABILITY, &fec_capabilities);
+
+ mtk_dp->has_fec = !!(fec_capabilities & DP_FEC_CAPABLE);
+ if (!mtk_dp->has_fec)
+ return;
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_FEC_CONFIGURATION,
+ DP_FEC_BIT_ERROR_COUNT | DP_FEC_READY);
+}
+
+static bool mtk_dp_parse_capabilities(struct mtk_dp *mtk_dp)
+{
+ u8 buf[DP_RECEIVER_CAP_SIZE] = {};
+ u8 val;
+ struct mtk_dp_train_info *train_info = &mtk_dp->train_info;
+
+ if (!mtk_dp_plug_state(mtk_dp))
+ return false;
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+ mdelay(2);
+
+ drm_dp_dpcd_read(&mtk_dp->aux, DP_DPCD_REV, buf, sizeof(buf));
+
+ memcpy(mtk_dp->rx_cap, buf, min(sizeof(mtk_dp->rx_cap), sizeof(buf)));
+ mtk_dp->rx_cap[DP_TRAINING_AUX_RD_INTERVAL] &= DP_TRAINING_AUX_RD_MASK;
+
+ if (buf[DP_DPCD_REV] >= DP_DPCD_REV_14)
+ mtk_dp_fec_set_capabilities(mtk_dp);
+
+ train_info->link_rate =
+ min_t(int, MTK_DP_MAX_LINK_RATE, buf[DP_MAX_LINK_RATE]);
+ train_info->lane_count =
+ min_t(int, MTK_DP_MAX_LANES, drm_dp_max_lane_count(buf));
+
+ train_info->tps3 = drm_dp_tps3_supported(buf);
+ train_info->tps4 = drm_dp_tps4_supported(buf);
+
+ train_info->sink_ssc =
+ !!(buf[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5);
+
+ drm_dp_dpcd_readb(&mtk_dp->aux, DP_MSTM_CAP, &val);
+ if (val & DP_MST_CAP) {
+ // Clear DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0
+ drm_dp_dpcd_readb(&mtk_dp->aux,
+ DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0, &val);
+ if (val)
+ drm_dp_dpcd_writeb(&mtk_dp->aux,
+ DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0,
+ val);
+ }
+
+ return true;
+}
+
+static int mtk_dp_edid_parse_audio_capabilities(struct mtk_dp *mtk_dp,
+ struct mtk_dp_audio_cfg *cfg)
+{
+ struct cea_sad *sads;
+ int sad_count;
+ int i;
+ int ret = 0;
+
+ if (mtk_dp->edid == NULL) {
+ dev_err(mtk_dp->dev, "EDID not found!\n");
+ return -EINVAL;
+ }
+
+ sad_count = drm_edid_to_sad(mtk_dp->edid, &sads);
+ if (sad_count <= 0) {
+ drm_info(mtk_dp->drm_dev, "The SADs is NULL\n");
+ return 0;
+ }
+
+ for (i = 0; i < sad_count; i++) {
+ int sample_rate;
+ int word_length;
+ // Only PCM supported at the moment
+ if (sads[i].format != HDMI_AUDIO_CODING_TYPE_PCM)
+ continue;
+
+ sample_rate = drm_cea_sad_get_sample_rate(&sads[i]);
+ word_length =
+ drm_cea_sad_get_uncompressed_word_length(&sads[i]);
+ if (sample_rate <= 0 || word_length <= 0)
+ continue;
+
+ cfg->channels = sads[i].channels;
+ cfg->word_length_bits = word_length;
+ cfg->sample_rate = sample_rate;
+ ret = 1;
+ break;
+ }
+ kfree(sads);
+
+ return ret;
+}
+
+static void mtk_dp_train_change_mode(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_phyd_reset(mtk_dp);
+ mtk_dp_reset_swing_pre_emphasis(mtk_dp);
+ mtk_dp_ssc_enable(mtk_dp, mtk_dp->train_info.sink_ssc);
+
+ mdelay(2);
+}
+
+static int mtk_dp_train_start(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+ int lane_count;
+ int link_rate;
+ int train_limit;
+ int max_link_rate;
+ int plug_wait;
+
+ for (plug_wait = 7; !mtk_dp_plug_state(mtk_dp) && plug_wait > 0;
+ --plug_wait)
+ mdelay(1);
+ if (plug_wait == 0) {
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE;
+ return -ENODEV;
+ }
+
+ drm_dp_dpcd_writeb(&mtk_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
+
+ link_rate = mtk_dp->rx_cap[1];
+ lane_count = mtk_dp->rx_cap[2] & 0x1F;
+
+ mtk_dp->train_info.link_rate = min(MTK_DP_MAX_LINK_RATE, link_rate);
+ mtk_dp->train_info.lane_count =
+ min(MTK_DP_MAX_LANES, lane_count);
+ link_rate = mtk_dp->train_info.link_rate;
+ lane_count = mtk_dp->train_info.lane_count;
+
+ switch (link_rate) {
+ case MTK_DP_LINKRATE_RBR:
+ case MTK_DP_LINKRATE_HBR:
+ case MTK_DP_LINKRATE_HBR2:
+ case MTK_DP_LINKRATE_HBR25:
+ case MTK_DP_LINKRATE_HBR3:
+ break;
+ default:
+ mtk_dp->train_info.link_rate = MTK_DP_LINKRATE_HBR3;
+ break;
+ };
+
+ max_link_rate = link_rate;
+ for (train_limit = 0; train_limit <= 6; ++train_limit) {
+ mtk_dp->train_info.cr_done = false;
+ mtk_dp->train_info.eq_done = false;
+
+ mtk_dp_train_change_mode(mtk_dp);
+ ret = mtk_dp_train_flow(mtk_dp, link_rate, lane_count);
+ if (ret == -ENODEV || ret == -EAGAIN)
+ return ret;
+
+ if (!mtk_dp->train_info.cr_done) {
+ switch (link_rate) {
+ case MTK_DP_LINKRATE_RBR:
+ lane_count = lane_count/2;
+ link_rate = max_link_rate;
+ if (lane_count == 0x0) {
+ mtk_dp->train_state
+ = MTK_DP_TRAIN_STATE_DPIDLE;
+ return -EIO;
+ }
+ break;
+ case MTK_DP_LINKRATE_HBR:
+ link_rate = MTK_DP_LINKRATE_RBR;
+ break;
+ case MTK_DP_LINKRATE_HBR2:
+ link_rate = MTK_DP_LINKRATE_HBR;
+ break;
+ case MTK_DP_LINKRATE_HBR3:
+ link_rate = MTK_DP_LINKRATE_HBR2;
+ break;
+ default:
+ return -EINVAL;
+ };
+ } else if (!mtk_dp->train_info.eq_done) {
+ lane_count /= 2;
+ if (lane_count == 0)
+ return -EIO;
+ } else
+ return 0;
+
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int mtk_dp_train_handler(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+
+ ret = mtk_dp_train_hpd_handle(mtk_dp);
+
+ if (!mtk_dp->train_info.cable_plugged_in)
+ return -ENODEV;
+
+ if (mtk_dp->train_state == MTK_DP_TRAIN_STATE_NORMAL)
+ return ret;
+
+ switch (mtk_dp->train_state) {
+ case MTK_DP_TRAIN_STATE_STARTUP:
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKCAP;
+ break;
+
+ case MTK_DP_TRAIN_STATE_CHECKCAP:
+ if (mtk_dp_parse_capabilities(mtk_dp)) {
+ mtk_dp->train_info.check_cap_count = 0;
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKEDID;
+ } else {
+ mtk_dp->train_info.check_cap_count++;
+
+ if (mtk_dp->train_info.check_cap_count >
+ MTK_DP_CHECK_SINK_CAP_TIMEOUT_COUNT) {
+ mtk_dp->train_info.check_cap_count = 0;
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE;
+ ret = -ETIMEDOUT;
+ }
+ }
+ break;
+
+ case MTK_DP_TRAIN_STATE_CHECKEDID:
+ if (mtk_dp->edid) {
+ int caps_found;
+
+ memset(&mtk_dp->info.audio_caps, 0,
+ sizeof(mtk_dp->info.audio_caps));
+ caps_found = mtk_dp_edid_parse_audio_capabilities(
+ mtk_dp, &mtk_dp->info.audio_caps);
+ if (caps_found > 0)
+ mtk_dp->audio_enable = true;
+ } else {
+ drm_info(mtk_dp->drm_dev, "Read EDID Fail!\n");
+ }
+
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING_PRE;
+ break;
+
+ case MTK_DP_TRAIN_STATE_TRAINING_PRE:
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_TRAINING;
+ break;
+
+ case MTK_DP_TRAIN_STATE_TRAINING:
+ ret = mtk_dp_train_start(mtk_dp);
+ if (!ret) {
+ mtk_dp_video_mute(mtk_dp, true);
+ mtk_dp_audio_mute(mtk_dp, true);
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKTIMING;
+ mtk_dp_fec_enable(mtk_dp, mtk_dp->has_fec);
+ } else if (ret != -EAGAIN)
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_DPIDLE;
+
+ ret = 0;
+ break;
+
+ case MTK_DP_TRAIN_STATE_CHECKTIMING:
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_NORMAL;
+ break;
+ case MTK_DP_TRAIN_STATE_NORMAL:
+ break;
+ case MTK_DP_TRAIN_STATE_POWERSAVE:
+ break;
+ case MTK_DP_TRAIN_STATE_DPIDLE:
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void mtk_dp_video_enable(struct mtk_dp *mtk_dp, bool enable)
+{
+ if (enable) {
+ mtk_dp_set_tx_out(mtk_dp);
+ mtk_dp_video_mute(mtk_dp, false);
+ } else {
+ mtk_dp_video_mute(mtk_dp, true);
+ }
+}
+
+static void mtk_dp_audio_sdp_setup(struct mtk_dp *mtk_dp,
+ struct mtk_dp_audio_cfg *cfg)
+{
+ struct mtk_dp_sdp_packet packet;
+ struct hdmi_audio_infoframe frame;
+
+ hdmi_audio_infoframe_init(&frame);
+ frame.coding_type = HDMI_AUDIO_CODING_TYPE_PCM;
+ frame.channels = cfg->channels;
+ frame.sample_frequency = cfg->sample_rate;
+
+ switch (cfg->word_length_bits) {
+ case 16:
+ frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+ break;
+ case 20:
+ frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_20;
+ break;
+ case 24:
+ default:
+ frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_24;
+ break;
+ }
+
+ packet.type = MTK_DP_SDP_AUI;
+ hdmi_audio_infoframe_pack_for_dp(&frame, packet.header,
+ sizeof(packet.header), packet.data,
+ sizeof(packet.data),
+ MTK_DP_DP_VERSION_11);
+
+ mtk_dp_audio_sdp_asp_set_channels(mtk_dp, cfg->channels);
+ mtk_dp_setup_sdp(mtk_dp, &packet);
+}
+
+static void mtk_dp_audio_setup(struct mtk_dp *mtk_dp,
+ struct mtk_dp_audio_cfg *cfg)
+{
+ mtk_dp_audio_sdp_setup(mtk_dp, cfg);
+ mtk_dp_audio_channel_status_set(mtk_dp, cfg);
+
+ mtk_dp_audio_setup_channels(mtk_dp, cfg);
+ mtk_dp_audio_set_divider(mtk_dp, 5);
+}
+
+static void mtk_dp_video_config(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_mn_overwrite_disable(mtk_dp);
+
+ mtk_dp_set_msa(mtk_dp);
+
+ mtk_dp_set_color_depth(mtk_dp, mtk_dp->info.depth);
+ mtk_dp_set_color_format(mtk_dp, mtk_dp->info.format);
+}
+
+static int mtk_dp_state_handler(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+
+ if (!mtk_dp->train_info.cable_plugged_in)
+ return -ENODEV;
+
+ switch (mtk_dp->state) {
+ case MTK_DP_STATE_INITIAL:
+ mtk_dp_video_mute(mtk_dp, true);
+ mtk_dp_audio_mute(mtk_dp, true);
+ mtk_dp->state = MTK_DP_STATE_IDLE;
+ break;
+
+ case MTK_DP_STATE_IDLE:
+ if (mtk_dp->train_state == MTK_DP_TRAIN_STATE_NORMAL)
+ mtk_dp->state = MTK_DP_STATE_PREPARE;
+ break;
+
+ case MTK_DP_STATE_PREPARE:
+ mtk_dp_video_config(mtk_dp);
+ mtk_dp_video_enable(mtk_dp, true);
+
+ if (mtk_dp->audio_enable) {
+ mtk_dp_audio_setup(mtk_dp, &mtk_dp->info.audio_caps);
+ mtk_dp_audio_mute(mtk_dp, false);
+ }
+
+ mtk_dp->state = MTK_DP_STATE_NORMAL;
+ break;
+
+ case MTK_DP_STATE_NORMAL:
+ if (mtk_dp->train_state != MTK_DP_TRAIN_STATE_NORMAL) {
+ mtk_dp_video_mute(mtk_dp, true);
+ mtk_dp_audio_mute(mtk_dp, true);
+ mtk_dp_sdp_stop_sending(mtk_dp);
+ mtk_dp->state = MTK_DP_STATE_IDLE;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void mtk_dp_init_port(struct mtk_dp *mtk_dp)
+{
+ mtk_dp_set_idle_pattern(mtk_dp, true);
+ mtk_dp_initialize_priv_data(mtk_dp);
+
+ mtk_dp_initialize_settings(mtk_dp);
+ mtk_dp_initialize_aux_settings(mtk_dp);
+ mtk_dp_initialize_digital_settings(mtk_dp);
+ mtk_dp_initialize_phy_settings(mtk_dp);
+ mtk_dp_initialize_hpd_detect_settings(mtk_dp);
+
+ mtk_dp_digital_sw_reset(mtk_dp);
+}
+
+static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev)
+{
+ struct mtk_dp *mtk_dp = dev;
+ int event;
+
+ event = mtk_dp_plug_state(mtk_dp) ? connector_status_connected :
+ connector_status_disconnected;
+
+ if (event < 0)
+ return IRQ_HANDLED;
+
+ if (mtk_dp->drm_dev)
+ drm_helper_hpd_irq_event(mtk_dp->bridge.dev);
+
+ if (mtk_dp->train_info.irq_status & MTK_DP_HPD_INTERRUPT) {
+ dev_info(mtk_dp->dev, "MTK_DP_HPD_INTERRUPT\n");
+ mtk_dp->train_info.irq_status &= ~MTK_DP_HPD_INTERRUPT;
+ mtk_dp_hpd_sink_event(mtk_dp);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mtk_dp_hpd_isr_handler(struct mtk_dp *mtk_dp)
+{
+ bool connected;
+ u16 swirq_status = mtk_dp_swirq_get_clear(mtk_dp);
+ u8 hwirq_status = mtk_dp_hwirq_get_clear(mtk_dp);
+ struct mtk_dp_train_info *train_info = &mtk_dp->train_info;
+
+ train_info->irq_status |= hwirq_status | swirq_status;
+
+ if (!train_info->irq_status)
+ return IRQ_HANDLED;
+
+ connected = mtk_dp_plug_state(mtk_dp);
+ if (connected || !train_info->cable_plugged_in)
+ train_info->irq_status &= ~MTK_DP_HPD_DISCONNECT;
+ else if (!connected || train_info->cable_plugged_in)
+ train_info->irq_status &= ~MTK_DP_HPD_CONNECT;
+
+ if (!(train_info->irq_status &
+ (MTK_DP_HPD_CONNECT | MTK_DP_HPD_DISCONNECT)))
+ return IRQ_HANDLED;
+
+ if (train_info->irq_status & MTK_DP_HPD_CONNECT) {
+ train_info->irq_status &= ~MTK_DP_HPD_CONNECT;
+ train_info->cable_plugged_in = true;
+ } else {
+ train_info->irq_status &= ~MTK_DP_HPD_DISCONNECT;
+ train_info->cable_plugged_in = false;
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_STARTUP;
+ }
+ train_info->cable_state_change = true;
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t mtk_dp_hpd_event(int hpd, void *dev)
+{
+ struct mtk_dp *mtk_dp = dev;
+ uint32_t irq_status;
+
+ irq_status = mtk_dp_read(mtk_dp, MTK_DP_TOP_IRQ_STATUS);
+
+ if (!irq_status)
+ return IRQ_HANDLED;
+
+ if (irq_status & RGS_IRQ_STATUS_TRANSMITTER)
+ return mtk_dp_hpd_isr_handler(mtk_dp);
+
+ return IRQ_HANDLED;
+}
+
+static int mtk_dp_dt_parse_pdata(struct mtk_dp *mtk_dp,
+ struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ int ret = 0;
+ void __iomem *base;
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ mtk_dp->regs = devm_regmap_init_mmio(dev, base, &mtk_dp_regmap_config);
+ if (IS_ERR(mtk_dp->regs))
+ return PTR_ERR(mtk_dp->regs);
+
+ dev_err(dev, "Registered regmap: %p\n", mtk_dp->regs);
+
+ mtk_dp->dp_tx_clk = devm_clk_get(dev, "faxi");
+ if (IS_ERR(mtk_dp->dp_tx_clk)) {
+ ret = PTR_ERR(mtk_dp->dp_tx_clk);
+ dev_err(dev, "Failed to get dptx clock: %d\n", ret);
+ mtk_dp->dp_tx_clk = NULL;
+ }
+
+ return 0;
+}
+
+static void mtk_dp_update_plugged_status(struct mtk_dp *mtk_dp)
+{
+ bool connected;
+
+ mutex_lock(&mtk_dp->update_plugged_status_lock);
+ connected = mtk_dp_plug_state(mtk_dp);
+ if (mtk_dp->plugged_cb && mtk_dp->codec_dev)
+ mtk_dp->plugged_cb(mtk_dp->codec_dev, connected);
+ mutex_unlock(&mtk_dp->update_plugged_status_lock);
+}
+
+static enum drm_connector_status mtk_dp_bdg_detect(struct drm_bridge *bridge)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ enum drm_connector_status ret;
+
+ ret = mtk_dp_plug_state(mtk_dp) ? connector_status_connected :
+ connector_status_disconnected;
+
+ if (mtk_dp->driver_data->is_edp)
+ return connector_status_connected;
+
+ mtk_dp_update_plugged_status(mtk_dp);
+ return ret;
+}
+
+static struct edid *mtk_dp_get_edid(struct drm_bridge *bridge,
+ struct drm_connector *connector)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ bool pre_enabled = mtk_dp->pre_enabled;
+
+ if (mtk_dp->edid)
+ kfree(mtk_dp->edid);
+
+ if (!pre_enabled)
+ drm_bridge_chain_pre_enable(bridge);
+
+ if (mtk_dp_plug_state(mtk_dp))
+ mtk_dp->edid = drm_get_edid(connector, &mtk_dp->aux.ddc);
+ else
+ mtk_dp->edid = NULL;
+
+ if (!pre_enabled)
+ drm_bridge_chain_post_disable(bridge);
+
+ if (!mtk_dp->edid)
+ return NULL;
+
+ return drm_edid_duplicate(mtk_dp->edid);
+}
+
+static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux,
+ struct drm_dp_aux_msg *msg)
+{
+ ssize_t err = -EAGAIN;
+ struct mtk_dp *mtk_dp;
+ bool is_read;
+ u8 request;
+ size_t accessed_bytes = 0;
+ int ret = 0;
+
+ mtk_dp = container_of(mtk_aux, struct mtk_dp, aux);
+
+ if (!mtk_dp->train_info.cable_plugged_in ||
+ mtk_dp->train_info.irq_status & MTK_DP_HPD_DISCONNECT) {
+ mtk_dp->train_state = MTK_DP_TRAIN_STATE_CHECKCAP;
+ err = -EAGAIN;
+ goto err;
+ }
+
+ switch (msg->request) {
+ case DP_AUX_I2C_MOT:
+ case DP_AUX_I2C_WRITE:
+ case DP_AUX_NATIVE_WRITE:
+ case DP_AUX_I2C_WRITE_STATUS_UPDATE:
+ case DP_AUX_I2C_WRITE_STATUS_UPDATE | DP_AUX_I2C_MOT:
+ request = msg->request & ~DP_AUX_I2C_WRITE_STATUS_UPDATE;
+ is_read = false;
+ break;
+ case DP_AUX_I2C_READ:
+ case DP_AUX_NATIVE_READ:
+ case DP_AUX_I2C_READ | DP_AUX_I2C_MOT:
+ request = msg->request;
+ is_read = true;
+ break;
+ default:
+ drm_err(mtk_aux->drm_dev, "invalid aux cmd = %d\n",
+ msg->request);
+ err = -EINVAL;
+ goto err;
+ }
+
+ while (accessed_bytes < msg->size) {
+ size_t to_access = min_t(size_t, DP_AUX_MAX_PAYLOAD_BYTES,
+ msg->size - accessed_bytes);
+
+ ret = mtk_dp_aux_do_transfer(mtk_dp, is_read, request,
+ msg->address + accessed_bytes,
+ msg->buffer + accessed_bytes,
+ to_access);
+ accessed_bytes += to_access;
+ if (ret) {
+ drm_info(mtk_dp->drm_dev,
+ "Failed to do AUX transfer: %ld\n", ret);
+ break;
+ }
+ }
+
+err:
+ if (!ret) {
+ msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK;
+ ret = msg->size;
+ } else {
+ msg->reply = DP_AUX_NATIVE_REPLY_NACK | DP_AUX_I2C_REPLY_NACK;
+ return err;
+ }
+
+ msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK;
+ return msg->size;
+}
+
+static void mtk_dp_aux_init(struct mtk_dp *mtk_dp)
+{
+ drm_dp_aux_init(&mtk_dp->aux);
+ mtk_dp->aux.name = "aux_mtk_dp";
+ mtk_dp->aux.transfer = mtk_dp_aux_transfer;
+}
+
+static void mtk_dp_poweroff(struct mtk_dp *mtk_dp)
+{
+ mutex_lock(&mtk_dp->dp_lock);
+
+ mtk_dp_hwirq_enable(mtk_dp, false);
+ mtk_dp_power_disable(mtk_dp);
+ clk_disable_unprepare(mtk_dp->dp_tx_clk);
+
+ mutex_unlock(&mtk_dp->dp_lock);
+}
+
+static int mtk_dp_poweron(struct mtk_dp *mtk_dp)
+{
+ int ret = 0;
+
+ mutex_lock(&mtk_dp->dp_lock);
+
+ ret = clk_prepare_enable(mtk_dp->dp_tx_clk);
+ if (ret < 0) {
+ dev_err(mtk_dp->dev, "Fail to enable clock: %d\n", ret);
+ goto err;
+ }
+ mtk_dp_init_port(mtk_dp);
+ mtk_dp_power_enable(mtk_dp);
+ mtk_dp_hwirq_enable(mtk_dp, true);
+
+err:
+ mutex_unlock(&mtk_dp->dp_lock);
+ return ret;
+}
+
+static int mtk_dp_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ int ret;
+
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+ drm_err(mtk_dp->drm_dev,
+ "Driver does not provide a connector!");
+ return -EINVAL;
+ }
+
+ ret = mtk_dp_poweron(mtk_dp);
+ if (ret)
+ return ret;
+
+ if (mtk_dp->next_bridge) {
+ ret = drm_bridge_attach(bridge->encoder, mtk_dp->next_bridge,
+ &mtk_dp->bridge, flags);
+ if (ret) {
+ drm_warn(mtk_dp->drm_dev,
+ "Failed to attach external bridge: %d\n", ret);
+ return ret;
+ }
+ }
+
+ mtk_dp->drm_dev = bridge->dev;
+
+ return 0;
+}
+
+static void mtk_dp_bridge_detach(struct drm_bridge *bridge)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp->drm_dev = NULL;
+
+ mtk_dp_poweroff(mtk_dp);
+}
+
+static void mtk_dp_bridge_atomic_disable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp->enabled = false;
+}
+
+static void mtk_dp_bridge_post_disable(struct drm_bridge *bridge)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp->pre_enabled = false;
+}
+static void mtk_dp_bridge_pre_enable(struct drm_bridge *bridge)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+
+ mtk_dp->pre_enabled = true;
+}
+
+static void mtk_dp_parse_drm_mode_timings(struct mtk_dp *mtk_dp,
+ struct drm_display_mode *mode)
+{
+ struct mtk_dp_timings *timings = &mtk_dp->info.timings;
+
+ drm_display_mode_to_videomode(mode, &timings->vm);
+ timings->frame_rate = mode->clock * 1000 / mode->htotal / mode->vtotal;
+ timings->htotal = mode->htotal;
+ timings->vtotal = mode->vtotal;
+}
+
+static void mtk_dp_bridge_atomic_enable(struct drm_bridge *bridge,
+ struct drm_bridge_state *old_state)
+{
+ struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
+ struct drm_connector *conn;
+ struct drm_connector_state *conn_state;
+ struct drm_crtc *crtc;
+ struct drm_crtc_state *crtc_state;
+ int ret = 0;
+ int i;
+
+ conn = drm_atomic_get_new_connector_for_encoder(old_state->base.state,
+ bridge->encoder);
+ if (!conn) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as connector is missing\n");
+ return;
+ }
+
+ memcpy(mtk_dp->connector_eld, conn->eld, MAX_ELD_BYTES);
+
+ conn_state = drm_atomic_get_new_connector_state(
+ old_state->base.state, conn);
+ if (!conn_state) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as connector state is missing\n");
+ return;
+ }
+
+ crtc = conn_state->crtc;
+ if (!crtc) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as connector state doesn't "
+ "have a crtc\n");
+ return;
+ }
+ crtc_state = drm_atomic_get_new_crtc_state(
+ old_state->base.state, crtc);
+ if (!crtc_state) {
+ drm_err(mtk_dp->drm_dev,
+ "Can't enable bridge as crtc state is missing\n");
+ return;
+ }
+
+ mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state->adjusted_mode);
+
+ mtk_dp_parse_capabilities(mtk_dp);
+ //training
+ for (i = 0; i < 50; i++) {
+ ret = mtk_dp_train_handler(mtk_dp);
+ if (ret) {
+ drm_err(mtk_dp->drm_dev, "Train handler failed %d\n",
+ ret);
+ return;
+ }
+
+ ret = mtk_dp_state_handler(mtk_dp);
+ if (ret) {
+ drm_err(mtk_dp->drm_dev, "State handler failed %d\n",
+ ret);
+ return;
+ }
+ }
+
+ mtk_dp->enabled = true;
+}
+
+static const struct drm_bridge_funcs mtk_dp_bridge_funcs = {
+ .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+ .atomic_reset = drm_atomic_helper_bridge_reset,
+ .attach = mtk_dp_bridge_attach,
+ .detach = mtk_dp_bridge_detach,
+ .pre_enable = mtk_dp_bridge_pre_enable,
+ .atomic_enable = mtk_dp_bridge_atomic_enable,
+ .atomic_disable = mtk_dp_bridge_atomic_disable,
+ .post_disable = mtk_dp_bridge_post_disable,
+ .get_edid = mtk_dp_get_edid,
+ .detect = mtk_dp_bdg_detect,
+};
+
+/*
+ * HDMI audio codec callbacks
+ */
+static int mtk_dp_audio_hw_params(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+ struct mtk_dp_audio_cfg cfg;
+
+ if (!mtk_dp->enabled) {
+ pr_err("%s, DP is not ready!\n", __func__);
+ return -ENODEV;
+ }
+
+ cfg.channels = params->cea.channels;
+ cfg.sample_rate = params->sample_rate;
+ cfg.word_length_bits = 24;
+
+ mtk_dp_audio_setup(mtk_dp, &cfg);
+
+ return 0;
+}
+
+static int mtk_dp_audio_startup(struct device *dev, void *data)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ mtk_dp_audio_mute(mtk_dp, false);
+
+ return 0;
+}
+
+static void mtk_dp_audio_shutdown(struct device *dev, void *data)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ mtk_dp_audio_mute(mtk_dp, true);
+}
+
+static int mtk_dp_audio_get_eld(struct device *dev, void *data, uint8_t *buf,
+ size_t len)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ if (mtk_dp->enabled)
+ memcpy(buf, mtk_dp->connector_eld, len);
+ else
+ memset(buf, 0, len);
+
+ return 0;
+}
+
+static int mtk_dp_audio_hook_plugged_cb(struct device *dev, void *data,
+ hdmi_codec_plugged_cb fn,
+ struct device *codec_dev)
+{
+ struct mtk_dp *mtk_dp = data;
+
+ mutex_lock(&mtk_dp->update_plugged_status_lock);
+ mtk_dp->plugged_cb = fn;
+ mtk_dp->codec_dev = codec_dev;
+ mutex_unlock(&mtk_dp->update_plugged_status_lock);
+
+ mtk_dp_update_plugged_status(mtk_dp);
+
+ return 0;
+}
+
+static const struct hdmi_codec_ops mtk_dp_audio_codec_ops = {
+ .hw_params = mtk_dp_audio_hw_params,
+ .audio_startup = mtk_dp_audio_startup,
+ .audio_shutdown = mtk_dp_audio_shutdown,
+ .get_eld = mtk_dp_audio_get_eld,
+ .hook_plugged_cb = mtk_dp_audio_hook_plugged_cb,
+ .no_capture_mute = 1,
+};
+
+static int mtk_dp_register_audio_driver(struct device *dev)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+ struct hdmi_codec_pdata codec_data = {
+ .ops = &mtk_dp_audio_codec_ops,
+ .max_i2s_channels = 8,
+ .i2s = 1,
+ .data = mtk_dp,
+ };
+ struct platform_device *pdev;
+
+ pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
+ PLATFORM_DEVID_AUTO, &codec_data,
+ sizeof(codec_data));
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ return 0;
+}
+
+static int mtk_dp_probe(struct platform_device *pdev)
+{
+ struct mtk_dp *mtk_dp;
+ struct device *dev = &pdev->dev;
+ int ret;
+ int irq_num = 0;
+ struct drm_panel *panel;
+
+ mtk_dp = devm_kzalloc(dev, sizeof(*mtk_dp), GFP_KERNEL);
+ if (!mtk_dp)
+ return -ENOMEM;
+
+ mtk_dp->dev = dev;
+
+ irq_num = platform_get_irq(pdev, 0);
+ if (irq_num < 0) {
+ dev_err(&pdev->dev, "failed to request dp irq resource\n");
+ return -EPROBE_DEFER;
+ }
+
+ mtk_dp->driver_data = of_device_get_match_data(dev);
+ if (!mtk_dp->driver_data)
+ return -EINVAL;
+
+ if (mtk_dp->driver_data->is_edp) {
+ ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0,
+ &panel, &mtk_dp->next_bridge);
+ if (ret) {
+ dev_err(dev, "Failed to find panel or bridge: %d\n",
+ ret);
+ return -EPROBE_DEFER;
+ }
+
+ if (panel) {
+ mtk_dp->next_bridge =
+ devm_drm_panel_bridge_add(dev, panel);
+ if (IS_ERR(mtk_dp->next_bridge)) {
+ ret = PTR_ERR(mtk_dp->next_bridge);
+ dev_err(dev, "Failed to create bridge: %d\n",
+ ret);
+ return -EPROBE_DEFER;
+ }
+ }
+ }
+
+ ret = mtk_dp_dt_parse_pdata(mtk_dp, pdev);
+ if (ret)
+ return ret;
+
+ mtk_dp_aux_init(mtk_dp);
+
+ ret = devm_request_threaded_irq(&pdev->dev, irq_num, mtk_dp_hpd_event,
+ mtk_dp_hpd_event_thread,
+ IRQ_TYPE_LEVEL_HIGH,
+ dev_name(&pdev->dev), mtk_dp);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request mediatek dptx irq\n");
+ return -EPROBE_DEFER;
+ }
+
+ mutex_init(&mtk_dp->dp_lock);
+
+ platform_set_drvdata(pdev, mtk_dp);
+
+ if (!mtk_dp->driver_data->is_edp) {
+ mutex_init(&mtk_dp->update_plugged_status_lock);
+ ret = mtk_dp_register_audio_driver(dev);
+ if (ret) {
+ dev_err(dev, "Failed to register audio driver: %d\n",
+ ret);
+ return ret;
+ }
+ }
+ mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
+ mtk_dp->bridge.of_node = pdev->dev.of_node;
+ if (mtk_dp->driver_data->is_edp)
+ mtk_dp->bridge.type = DRM_MODE_CONNECTOR_eDP;
+ else
+ mtk_dp->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
+
+ mtk_dp->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
+ DRM_BRIDGE_OP_HPD;
+ drm_bridge_add(&mtk_dp->bridge);
+
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
+
+ platform_set_drvdata(pdev, mtk_dp);
+
+ return 0;
+}
+
+static int mtk_dp_remove(struct platform_device *pdev)
+{
+ struct mtk_dp *mtk_dp = platform_get_drvdata(pdev);
+
+ mtk_dp_video_mute(mtk_dp, true);
+ mtk_dp_audio_mute(mtk_dp, true);
+
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mtk_dp_suspend(struct device *dev)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ mtk_dp_power_disable(mtk_dp);
+ mtk_dp_hwirq_enable(mtk_dp, false);
+
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
+static int mtk_dp_resume(struct device *dev)
+{
+ struct mtk_dp *mtk_dp = dev_get_drvdata(dev);
+
+ pm_runtime_get_sync(dev);
+
+ mtk_dp_init_port(mtk_dp);
+ mtk_dp_power_enable(mtk_dp);
+ mtk_dp_hwirq_enable(mtk_dp, true);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(mtk_dp_pm_ops,
+ mtk_dp_suspend, mtk_dp_resume);
+
+static const struct mtk_dp_driver_data mt8195_dp_driver_data = {
+ .is_edp = false,
+};
+
+static const struct mtk_dp_driver_data mt8195_edp_driver_data = {
+ .is_edp = true,
+};
+
+static const struct of_device_id mtk_dp_of_match[] = {
+ {
+ .compatible = "mediatek,mt8195-dp_tx",
+ .data = &mt8195_dp_driver_data,
+ },
+ {
+ .compatible = "mediatek,mt8195-edp_tx",
+ .data = &mt8195_edp_driver_data,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mtk_dp_of_match);
+
+struct platform_driver mtk_dp_driver = {
+ .probe = mtk_dp_probe,
+ .remove = mtk_dp_remove,
+ .driver = {
+ .name = "mediatek-drm-dp",
+ .of_match_table = mtk_dp_of_match,
+ .pm = &mtk_dp_pm_ops,
+ },
+};
+
diff --git a/drivers/gpu/drm/mediatek/mtk_dp_reg.h b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
new file mode 100644
index 000000000000..26ed3b66da91
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
@@ -0,0 +1,580 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ * Copyright (c) 2021 BayLibre
+ */
+#ifndef _MTK_DP_REG_H_
+#define _MTK_DP_REG_H_
+
+#define MTK_DP_SIP_CONTROL_AARCH32 0x82000523
+# define MTK_DP_SIP_ATF_VIDEO_UNMUTE 0x20
+# define MTK_DP_SIP_ATF_EDP_VIDEO_UNMUTE 0x21
+
+#define TOP_OFFSET 0x2000
+#define ENC0_OFFSET 0x3000
+#define ENC1_OFFSET 0x3200
+#define TRANS_OFFSET 0x3400
+#define AUX_OFFSET 0x3600
+#define SEC_OFFSET 0x4000
+
+#define MTK_DP_HPD_DISCONNECT BIT(1)
+#define MTK_DP_HPD_CONNECT BIT(2)
+#define MTK_DP_HPD_INTERRUPT BIT(3)
+
+#define MTK_DP_ENC0_P0_3000 (ENC0_OFFSET + 0x000)
+# define LANE_NUM_DP_ENC0_P0_MASK 0x3
+# define VIDEO_MUTE_SW_DP_ENC0_P0_MASK 0x4
+# define VIDEO_MUTE_SW_DP_ENC0_P0_SHIFT 2
+# define VIDEO_MUTE_SEL_DP_ENC0_P0_MASK 0x8
+# define VIDEO_MUTE_SEL_DP_ENC0_P0_SHIFT 3
+# define ENHANCED_FRAME_EN_DP_ENC0_P0_MASK 0x10
+# define ENHANCED_FRAME_EN_DP_ENC0_P0_SHIFT 4
+
+#define MTK_DP_ENC0_P0_3004 (ENC0_OFFSET + 0x004)
+# define VIDEO_M_CODE_SEL_DP_ENC0_P0_MASK 0x100
+# define VIDEO_M_CODE_SEL_DP_ENC0_P0_SHIFT 8
+# define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_MASK 0x200
+# define DP_TX_ENCODER_4P_RESET_SW_DP_ENC0_P0_SHIFT 9
+
+#define MTK_DP_ENC0_P0_3008 (ENC0_OFFSET + 0x008)
+# define VIDEO_M_CODE_SW_0_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_300C (ENC0_OFFSET + 0x00C)
+# define VIDEO_M_CODE_SW_1_DP_ENC0_P0_MASK 0xff
+
+#define MTK_DP_ENC0_P0_3010 (ENC0_OFFSET + 0x010)
+# define HTOTAL_SW_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3014 (ENC0_OFFSET + 0x014)
+# define VTOTAL_SW_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3018 (ENC0_OFFSET + 0x018)
+# define HSTART_SW_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_301C (ENC0_OFFSET + 0x01C)
+# define VSTART_SW_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3020 (ENC0_OFFSET + 0x020)
+# define HWIDTH_SW_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3024 (ENC0_OFFSET + 0x024)
+# define VHEIGHT_SW_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3028 (ENC0_OFFSET + 0x028)
+# define HSW_SW_DP_ENC0_P0_MASK 0x7fff
+# define HSW_SW_DP_ENC0_P0_SHIFT 0
+# define HSP_SW_DP_ENC0_P0_MASK 0x8000
+
+#define MTK_DP_ENC0_P0_302C (ENC0_OFFSET + 0x02C)
+# define VSW_SW_DP_ENC0_P0_MASK 0x7fff
+# define VSW_SW_DP_ENC0_P0_SHIFT 0
+# define VSP_SW_DP_ENC0_P0_MASK 0x8000
+
+#define MTK_DP_ENC0_P0_3030 (ENC0_OFFSET + 0x030)
+# define HTOTAL_SEL_DP_ENC0_P0_SHIFT 0
+# define VTOTAL_SEL_DP_ENC0_P0_SHIFT 1
+# define HSTART_SEL_DP_ENC0_P0_SHIFT 2
+# define VSTART_SEL_DP_ENC0_P0_SHIFT 3
+# define HWIDTH_SEL_DP_ENC0_P0_SHIFT 4
+# define VHEIGHT_SEL_DP_ENC0_P0_SHIFT 5
+# define HSP_SEL_DP_ENC0_P0_SHIFT 6
+# define HSW_SEL_DP_ENC0_P0_SHIFT 7
+# define VSP_SEL_DP_ENC0_P0_SHIFT 8
+# define VSW_SEL_DP_ENC0_P0_SHIFT 9
+# define VBID_AUDIO_MUTE_FLAG_SW_DP_ENC0_P0_MASK 0x800
+# define VBID_AUDIO_MUTE_SW_DP_ENC0_P0_SHIFT 11
+# define VBID_AUDIO_MUTE_FLAG_SEL_DP_ENC0_P0_MASK 0x1000
+# define VBID_AUDIO_MUTE_SEL_DP_ENC0_P0_SHIFT 12
+
+#define MTK_DP_ENC0_P0_3034 (ENC0_OFFSET + 0x034)
+
+#define MTK_DP_ENC0_P0_3038 (ENC0_OFFSET + 0x038)
+# define VIDEO_SOURCE_SEL_DP_ENC0_P0_MASK 0x800
+# define VIDEO_SOURCE_SEL_DP_ENC0_P0_SHIFT 11
+
+#define MTK_DP_ENC0_P0_303C (ENC0_OFFSET + 0x03C)
+# define SRAM_START_READ_THRD_DP_ENC0_P0_MASK 0x3f
+# define SRAM_START_READ_THRD_DP_ENC0_P0_SHIFT 0
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_MASK 0x700
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT 8
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_16BIT (0 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_12BIT (1 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_10BIT (2 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_8BIT (3 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+# define VIDEO_COLOR_DEPTH_DP_ENC0_P0_6BIT (4 << VIDEO_COLOR_DEPTH_DP_ENC0_P0_SHIFT)
+# define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_MASK 0x7000
+# define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT 12
+# define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_RGB (0 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
+# define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR422 (1 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
+# define PIXEL_ENCODE_FORMAT_DP_ENC0_P0_YCBCR420 (2 << PIXEL_ENCODE_FORMAT_DP_ENC0_P0_SHIFT)
+# define VIDEO_MN_GEN_EN_DP_ENC0_P0_MASK 0x8000
+# define VIDEO_MN_GEN_EN_DP_ENC0_P0_SHIFT 15
+
+#define MTK_DP_ENC0_P0_3040 (ENC0_OFFSET + 0x040)
+# define SDP_DOWN_CNT_INIT_DP_ENC0_P0_MASK 0xfff
+# define SDP_DOWN_CNT_INIT_DP_ENC0_P0_SHIFT 0
+
+#define MTK_DP_ENC0_P0_3044 (ENC0_OFFSET + 0x044)
+# define VIDEO_N_CODE_0_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3048 (ENC0_OFFSET + 0x048)
+# define VIDEO_N_CODE_1_DP_ENC0_P0_MASK 0xff
+
+#define MTK_DP_ENC0_P0_304C (ENC0_OFFSET + 0x04C)
+# define VBID_VIDEO_MUTE_DP_ENC0_P0_MASK 0x4
+# define SDP_VSYNC_RISING_MASK_DP_ENC0_P0_MASK 0x100
+
+#define MTK_DP_ENC0_P0_3050 (ENC0_OFFSET + 0x050)
+# define VIDEO_N_CODE_MN_GEN_0_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3054 (ENC0_OFFSET + 0x054)
+# define VIDEO_N_CODE_MN_GEN_1_DP_ENC0_P0_MASK 0xff
+
+#define MTK_DP_ENC0_P0_3064 (ENC0_OFFSET + 0x064)
+# define HDE_NUM_LAST_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3088 (ENC0_OFFSET + 0x088)
+# define AU_EN_DP_ENC0_P0_MASK 0x40
+# define AU_EN_DP_ENC0_P0_SHIFT 6
+# define AUDIO_8CH_EN_DP_ENC0_P0_MASK 0x80
+# define AUDIO_8CH_SEL_DP_ENC0_P0_MASK 0x100
+# define AUDIO_2CH_EN_DP_ENC0_P0_MASK 0x4000
+# define AUDIO_2CH_SEL_DP_ENC0_P0_MASK 0x8000
+
+#define MTK_DP_ENC0_P0_308C (ENC0_OFFSET + 0x08C)
+# define CH_STATUS_0_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3090 (ENC0_OFFSET + 0x090)
+# define CH_STATUS_1_DP_ENC0_P0_MASK 0xffff
+
+#define MTK_DP_ENC0_P0_3094 (ENC0_OFFSET + 0x094)
+# define CH_STATUS_2_DP_ENC0_P0_MASK 0xff
+
+#define MTK_DP_ENC0_P0_30A0 (ENC0_OFFSET + 0x0A0)
+
+#define MTK_DP_ENC0_P0_30A4 (ENC0_OFFSET + 0x0A4)
+# define AU_TS_CFG_DP_ENC0_P0_MASK 0xff
+
+#define MTK_DP_ENC0_P0_30A8 (ENC0_OFFSET + 0x0A8)
+
+#define MTK_DP_ENC0_P0_30AC (ENC0_OFFSET + 0x0AC)
+
+#define MTK_DP_ENC0_P0_30B0 (ENC0_OFFSET + 0x0B0)
+
+#define MTK_DP_ENC0_P0_30B4 (ENC0_OFFSET + 0x0B4)
+# define ISRC_CFG_DP_ENC0_P0_MASK 0xff00
+# define ISRC_CFG_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC0_P0_30B8 (ENC0_OFFSET + 0x0B8)
+
+#define MTK_DP_ENC0_P0_30BC (ENC0_OFFSET + 0x0BC)
+# define ISRC_CONT_DP_ENC0_P0_MASK 0x1
+# define ISRC_CONT_DP_ENC0_P0_SHIFT 0
+# define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK 0x700
+# define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC0_P0_30D8 (ENC0_OFFSET + 0x0D8)
+
+#define MTK_DP_ENC0_P0_312C (ENC0_OFFSET + 0x12C)
+# define ASP_HB2_DP_ENC0_P0_MASK 0xff
+# define ASP_HB3_DP_ENC0_P0_MASK 0xff00
+# define ASP_HB3_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC0_P0_3130 (ENC0_OFFSET + 0x130)
+
+#define MTK_DP_ENC0_P0_3138 (ENC0_OFFSET + 0x138)
+
+#define MTK_DP_ENC0_P0_3154 (ENC0_OFFSET + 0x154)
+# define PGEN_HTOTAL_DP_ENC0_P0_MASK 0x3fff
+
+#define MTK_DP_ENC0_P0_3158 (ENC0_OFFSET + 0x158)
+# define PGEN_HSYNC_RISING_DP_ENC0_P0_MASK 0x3fff
+
+#define MTK_DP_ENC0_P0_315C (ENC0_OFFSET + 0x15C)
+# define PGEN_HSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK 0x3fff
+
+#define MTK_DP_ENC0_P0_3160 (ENC0_OFFSET + 0x160)
+# define PGEN_HFDE_START_DP_ENC0_P0_MASK 0x3fff
+
+#define MTK_DP_ENC0_P0_3164 (ENC0_OFFSET + 0x164)
+# define PGEN_HFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK 0x3fff
+
+#define MTK_DP_ENC0_P0_3168 (ENC0_OFFSET + 0x168)
+# define PGEN_VTOTAL_DP_ENC0_P0_MASK 0x1fff
+
+#define MTK_DP_ENC0_P0_316C (ENC0_OFFSET + 0x16C)
+# define PGEN_VSYNC_RISING_DP_ENC0_P0_MASK 0x1fff
+
+#define MTK_DP_ENC0_P0_3170 (ENC0_OFFSET + 0x170)
+# define PGEN_VSYNC_PULSE_WIDTH_DP_ENC0_P0_MASK 0x1fff
+
+#define MTK_DP_ENC0_P0_3174 (ENC0_OFFSET + 0x174)
+# define PGEN_VFDE_START_DP_ENC0_P0_MASK 0x1fff
+
+#define MTK_DP_ENC0_P0_3178 (ENC0_OFFSET + 0x178)
+# define PGEN_VFDE_ACTIVE_WIDTH_DP_ENC0_P0_MASK 0x1fff
+
+#define MTK_DP_ENC0_P0_31B0 (ENC0_OFFSET + 0x1B0)
+
+#define MTK_DP_ENC0_P0_31C8 (ENC0_OFFSET + 0x1C8)
+# define VSC_EXT_VESA_HB0_DP_ENC0_P0_MASK 0xff
+# define VSC_EXT_VESA_HB1_DP_ENC0_P0_MASK 0xff00
+# define VSC_EXT_VESA_HB1_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC0_P0_31CC (ENC0_OFFSET + 0x1CC)
+# define VSC_EXT_VESA_HB2_DP_ENC0_P0_MASK 0xff
+# define VSC_EXT_VESA_HB2_DP_ENC0_P0_SHIFT 0
+# define VSC_EXT_VESA_HB3_DP_ENC0_P0_MASK 0xff00
+
+#define MTK_DP_ENC0_P0_31D0 (ENC0_OFFSET + 0x1D0)
+# define VSC_EXT_CEA_HB0_DP_ENC0_P0_MASK 0xff
+# define VSC_EXT_CEA_HB1_DP_ENC0_P0_MASK 0xff00
+# define VSC_EXT_CEA_HB1_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC0_P0_31D4 (ENC0_OFFSET + 0x1D4)
+# define VSC_EXT_CEA_HB2_DP_ENC0_P0_MASK 0xff
+# define VSC_EXT_CEA_HB2_DP_ENC0_P0_SHIFT 0
+# define VSC_EXT_CEA_HB3_DP_ENC0_P0_MASK 0xff00
+
+#define MTK_DP_ENC0_P0_31D8 (ENC0_OFFSET + 0x1D8)
+# define VSC_EXT_VESA_NUM_DP_ENC0_P0_MASK 0x3f
+# define VSC_EXT_VESA_NUM_DP_ENC0_P0_SHIFT 0
+# define VSC_EXT_CEA_NUM_DP_ENC0_P0_MASK 0x3f00
+# define VSC_EXT_CEA_NUM_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC0_P0_31DC (ENC0_OFFSET + 0x1DC)
+# define HDR0_CFG_DP_ENC0_P0_MASK 0xff
+# define HDR0_CFG_DP_ENC0_P0_SHIFT 0
+
+#define MTK_DP_ENC0_P0_31E8 (ENC0_OFFSET + 0x1E8)
+
+#define MTK_DP_ENC0_P0_31EC (ENC0_OFFSET + 0x1EC)
+# define AUDIO_CH_SRC_SEL_DP_ENC0_P0_MASK 0x10
+# define AUDIO_CH_SRC_SEL_DP_ENC0_P0_SHIFT 4
+# define ISRC1_HB3_DP_ENC0_P0_MASK 0xff00
+# define ISRC1_HB3_DP_ENC0_P0_SHIFT 8
+
+#define MTK_DP_ENC1_P0_3200 (ENC1_OFFSET + 0x000)
+
+#define MTK_DP_ENC1_P0_3280 (ENC1_OFFSET + 0x080)
+# define SDP_PACKET_TYPE_DP_ENC1_P0_MASK 0x1f
+# define SDP_PACKET_W_DP_ENC1_P0 0x20
+# define SDP_PACKET_W_DP_ENC1_P0_MASK 0x20
+# define SDP_PACKET_W_DP_ENC1_P0_SHIFT 5
+
+#define MTK_DP_ENC1_P0_328C (ENC1_OFFSET + 0x08C)
+
+#define MTK_DP_ENC1_P0_3290 (ENC1_OFFSET + 0x090)
+
+#define MTK_DP_ENC1_P0_32A0 (ENC1_OFFSET + 0x0A0)
+
+#define MTK_DP_ENC1_P0_32A4 (ENC1_OFFSET + 0x0A4)
+
+#define MTK_DP_ENC1_P0_3300 (ENC1_OFFSET + 0x100)
+# define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_MASK 0x300
+# define VIDEO_AFIFO_RDY_SEL_DP_ENC1_P0_SHIFT 8
+
+#define MTK_DP_ENC1_P0_3304 (ENC1_OFFSET + 0x104)
+# define AU_PRTY_REGEN_DP_ENC1_P0_MASK 0x100
+# define AU_CH_STS_REGEN_DP_ENC1_P0_MASK 0x200
+# define AUDIO_SAMPLE_PRSENT_REGEN_DP_ENC1_P0_MASK 0x1000
+
+#define MTK_DP_ENC1_P0_3324 (ENC1_OFFSET + 0x124)
+# define AUDIO_SOURCE_MUX_DP_ENC1_P0_MASK 0x300
+# define AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT 8
+# define AUDIO_SOURCE_MUX_DP_ENC1_P0_DPRX (0 << AUDIO_SOURCE_MUX_DP_ENC1_P0_SHIFT)
+
+#define MTK_DP_ENC1_P0_3364 (ENC1_OFFSET + 0x164)
+# define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_MASK 0xfff
+# define SDP_DOWN_CNT_INIT_IN_HBLANK_DP_ENC1_P0_SHIFT 0
+# define FIFO_READ_START_POINT_DP_ENC1_P0_MASK 0xf000
+# define FIFO_READ_START_POINT_DP_ENC1_P0_SHIFT 12
+
+#define MTK_DP_ENC1_P0_3368 (ENC1_OFFSET + 0x168)
+# define VIDEO_SRAM_FIFO_CNT_RESET_SEL_DP_ENC1_P0_SHIFT 0
+# define VIDEO_STABLE_CNT_THRD_DP_ENC1_P0_SHIFT 4
+# define SDP_DP13_EN_DP_ENC1_P0_SHIFT 8
+# define BS2BS_MODE_DP_ENC1_P0_MASK 0x3000
+# define BS2BS_MODE_DP_ENC1_P0_SHIFT 12
+
+#define MTK_DP_ENC1_P0_33F4 (ENC1_OFFSET + 0x1F4)
+
+#define MTK_DP_TRANS_P0_3400 (TRANS_OFFSET + 0x000)
+# define PATTERN1_EN_DP_TRANS_P0_MASK 0x1000
+# define PATTERN1_EN_DP_TRANS_P0_SHIFT 12
+# define PATTERN2_EN_DP_TRANS_P0_MASK 0x2000
+# define PATTERN3_EN_DP_TRANS_P0_MASK 0x4000
+# define PATTERN4_EN_DP_TRANS_P0_MASK 0x8000
+
+#define MTK_DP_TRANS_P0_3404 (TRANS_OFFSET + 0x004)
+# define DP_SCR_EN_DP_TRANS_P0_MASK 0x1
+
+#define MTK_DP_TRANS_P0_340C (TRANS_OFFSET + 0x00C)
+# define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_MASK 0x2000
+# define DP_TX_TRANSMITTER_4P_RESET_SW_DP_TRANS_P0_SHIFT 13
+
+#define MTK_DP_TRANS_P0_3410 (TRANS_OFFSET + 0x010)
+# define HPD_DEB_THD_DP_TRANS_P0_MASK 0xf
+# define HPD_DEB_THD_DP_TRANS_P0_SHIFT 0
+# define HPD_INT_THD_DP_TRANS_P0_MASK 0xf0
+# define HPD_INT_THD_DP_TRANS_P0_SHIFT 4
+# define HPD_INT_THD_DP_TRANS_P0_LOWER_500US (2 << HPD_INT_THD_DP_TRANS_P0_SHIFT)
+# define HPD_INT_THD_DP_TRANS_P0_UPPER_1100US (2 << (HPD_INT_THD_DP_TRANS_P0_SHIFT + 2))
+# define HPD_DISC_THD_DP_TRANS_P0_MASK 0xf00
+# define HPD_DISC_THD_DP_TRANS_P0_SHIFT 8
+# define HPD_CONN_THD_DP_TRANS_P0_MASK 0xf000
+# define HPD_CONN_THD_DP_TRANS_P0_SHIFT 12
+
+#define MTK_DP_TRANS_P0_3414 (TRANS_OFFSET + 0x014)
+# define HPD_DB_DP_TRANS_P0_MASK 0x4
+
+#define MTK_DP_TRANS_P0_3418 (TRANS_OFFSET + 0x018)
+# define IRQ_CLR_DP_TRANS_P0_MASK 0xf
+# define IRQ_MASK_DP_TRANS_P0_MASK 0xf0
+# define IRQ_MASK_DP_TRANS_P0_SHIFT 4
+# define IRQ_MASK_DP_TRANS_P0_DISC_IRQ (BIT(1) << IRQ_MASK_DP_TRANS_P0_SHIFT)
+# define IRQ_MASK_DP_TRANS_P0_CONN_IRQ (BIT(2) << IRQ_MASK_DP_TRANS_P0_SHIFT)
+# define IRQ_MASK_DP_TRANS_P0_INT_IRQ (BIT(3) << IRQ_MASK_DP_TRANS_P0_SHIFT)
+# define IRQ_STATUS_DP_TRANS_P0_MASK 0xf000
+# define IRQ_STATUS_DP_TRANS_P0_SHIFT 12
+
+#define MTK_DP_TRANS_P0_342C (TRANS_OFFSET + 0x02C)
+# define XTAL_FREQ_DP_TRANS_P0_DEFAULT 0x69
+# define XTAL_FREQ_DP_TRANS_P0_MASK 0xff
+
+#define MTK_DP_TRANS_P0_3430 (TRANS_OFFSET + 0x030)
+# define HPD_INT_THD_ECO_DP_TRANS_P0_MASK 0x3
+# define HPD_INT_THD_ECO_DP_TRANS_P0_HIGH_BOUND_EXT BIT(1)
+
+#define MTK_DP_TRANS_P0_34A4 (TRANS_OFFSET + 0x0A4)
+# define LANE_NUM_DP_TRANS_P0_MASK 0xc
+# define LANE_NUM_DP_TRANS_P0_SHIFT 2
+
+#define MTK_DP_TRANS_P0_3540 (TRANS_OFFSET + 0x140)
+# define FEC_EN_DP_TRANS_P0_MASK 0x1
+# define FEC_EN_DP_TRANS_P0_SHIFT 0
+# define FEC_CLOCK_EN_MODE_DP_TRANS_P0_MASK 0x8
+# define FEC_CLOCK_EN_MODE_DP_TRANS_P0_SHIFT 3
+
+#define MTK_DP_TRANS_P0_3580 (TRANS_OFFSET + 0x180)
+# define POST_MISC_DATA_LANE0_OV_DP_TRANS_P0_MASK 0x100
+# define POST_MISC_DATA_LANE1_OV_DP_TRANS_P0_MASK 0x200
+# define POST_MISC_DATA_LANE2_OV_DP_TRANS_P0_MASK 0x400
+# define POST_MISC_DATA_LANE3_OV_DP_TRANS_P0_MASK 0x800
+
+#define MTK_DP_TRANS_P0_35C4 (TRANS_OFFSET + 0x1C4)
+# define SW_IRQ_MASK_DP_TRANS_P0_MASK 0xffff
+
+#define MTK_DP_TRANS_P0_35C8 (TRANS_OFFSET + 0x1C8)
+# define SW_IRQ_CLR_DP_TRANS_P0_MASK 0xffff
+
+# define SW_IRQ_STATUS_DP_TRANS_P0_MASK 0xffff
+# define SW_IRQ_STATUS_DP_TRANS_P0_SHIFT 0
+
+#define MTK_DP_TRANS_P0_35D0 (TRANS_OFFSET + 0x1D0)
+# define SW_IRQ_FINAL_STATUS_DP_TRANS_P0_MASK 0xffff
+
+#define MTK_DP_TRANS_P0_35F0 (TRANS_OFFSET + 0x1F0)
+
+#define MTK_DP_AUX_P0_360C (AUX_OFFSET + 0x00C)
+# define AUX_TIMEOUT_THR_AUX_TX_P0_MASK 0x1fff
+
+#define MTK_DP_AUX_P0_3614 (AUX_OFFSET + 0x014)
+# define AUX_RX_UI_CNT_THR_AUX_TX_P0_MASK 0x7f
+# define AUX_RX_UI_CNT_THR_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_AUX_P0_3618 (AUX_OFFSET + 0x018)
+# define AUX_RX_FIFO_FULL_AUX_TX_P0_MASK 0x200
+# define AUX_RX_FIFO_WRITE_POINTER_AUX_TX_P0_MASK 0xf
+
+#define MTK_DP_AUX_P0_3620 (AUX_OFFSET + 0x020)
+# define AUX_RD_MODE_AUX_TX_P0_MASK 0x200
+# define AUX_RX_FIFO_READ_PULSE_TX_P0_MASK 0x100
+# define AUX_RX_FIFO_R_PULSE_TX_P0_SHIFT 8
+# define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_MASK 0xff
+# define AUX_RX_FIFO_READ_DATA_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_AUX_P0_3624 (AUX_OFFSET + 0x024)
+# define AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK 0xf
+
+#define MTK_DP_AUX_P0_3628 (AUX_OFFSET + 0x028)
+# define AUX_RX_PHY_STATE_AUX_TX_P0_MASK 0x3ff
+# define AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT 0
+# define AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE (BIT(1) << AUX_RX_PHY_STATE_AUX_TX_P0_SHIFT)
+
+#define MTK_DP_AUX_P0_362C (AUX_OFFSET + 0x02C)
+# define AUX_NO_LENGTH_AUX_TX_P0_MASK 0x1
+# define AUX_NO_LENGTH_AUX_TX_P0_SHIFT 0
+# define AUX_TX_AUXTX_OV_EN_AUX_TX_P0_MASK 0x2
+# define AUX_RESERVED_RW_0_AUX_TX_P0_MASK 0xfffc
+
+#define MTK_DP_AUX_P0_3630 (AUX_OFFSET + 0x030)
+# define AUX_TX_REQUEST_READY_AUX_TX_P0_MASK 0x8
+# define AUX_TX_REQUEST_READY_AUX_TX_P0_SHIFT 3
+
+#define MTK_DP_AUX_P0_3634 (AUX_OFFSET + 0x034)
+# define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_MASK 0xff00
+# define AUX_TX_OVER_SAMPLE_RATE_AUX_TX_P0_SHIFT 8
+
+#define MTK_DP_AUX_P0_3640 (AUX_OFFSET + 0x040)
+# define AUX_RX_RECV_COMPLETE_IRQ_TX_P0_MASK 0x40
+# define AUX_RX_AUX_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT 6
+# define AUX_RX_EDID_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT 5
+# define AUX_RX_MCCS_RECV_COMPLETE_IRQ_AUX_TX_P0_SHIFT 4
+# define AUX_RX_CMD_RECV_IRQ_AUX_TX_P0_SHIFT 3
+# define AUX_RX_ADDR_RECV_IRQ_AUX_TX_P0_SHIFT 2
+# define AUX_RX_DATA_RECV_IRQ_AUX_TX_P0_SHIFT 1
+# define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_MASK 0x1
+# define AUX_400US_TIMEOUT_IRQ_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_AUX_P0_3644 (AUX_OFFSET + 0x044)
+# define MCU_REQUEST_COMMAND_AUX_TX_P0_MASK 0xf
+
+#define MTK_DP_AUX_P0_3648 (AUX_OFFSET + 0x048)
+# define MCU_REQUEST_ADDRESS_LSB_AUX_TX_P0_MASK 0xffff
+
+#define MTK_DP_AUX_P0_364C (AUX_OFFSET + 0x04C)
+# define MCU_REQUEST_ADDRESS_MSB_AUX_TX_P0_MASK 0xf
+
+#define MTK_DP_AUX_P0_3650 (AUX_OFFSET + 0x050)
+# define MCU_REQ_DATA_NUM_AUX_TX_P0_MASK 0xf000
+# define MCU_REQ_DATA_NUM_AUX_TX_P0_SHIFT 12
+# define PHY_FIFO_RST_AUX_TX_P0_MASK 0x200
+# define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_MASK 0x100
+# define MCU_ACK_TRAN_COMPLETE_AUX_TX_P0_SHIFT 8
+
+#define MTK_DP_AUX_P0_3658 (AUX_OFFSET + 0x058)
+# define AUX_TX_OV_EN_AUX_TX_P0_MASK 0x1
+
+#define MTK_DP_AUX_P0_3690 (AUX_OFFSET + 0x090)
+# define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_MASK 0x100
+# define RX_REPLY_COMPLETE_MODE_AUX_TX_P0_SHIFT 8
+
+#define MTK_DP_AUX_P0_3704 (AUX_OFFSET + 0x104)
+# define AUX_TX_FIFO_WRITE_DATA_NEW_MODE_TOGGLE_AUX_TX_P0_MASK 0x2
+# define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_MASK 0x4
+# define AUX_TX_FIFO_NEW_MODE_EN_AUX_TX_P0_SHIFT 2
+
+#define MTK_DP_AUX_P0_3708 (AUX_OFFSET + 0x108)
+
+#define MTK_DP_AUX_P0_37C8 (AUX_OFFSET + 0x1C8)
+# define MTK_ATOP_EN_AUX_TX_P0_MASK 0x1
+# define MTK_ATOP_EN_AUX_TX_P0_SHIFT 0
+
+#define MTK_DP_TOP_PWR_STATE (TOP_OFFSET + 0x00)
+# define DP_PWR_STATE_MASK 0x3
+# define DP_PWR_STATE_BANDGAP 1
+# define DP_PWR_STATE_BANDGAP_TPLL 2
+# define DP_PWR_STATE_BANDGAP_TPLL_LANE 3
+
+#define MTK_DP_TOP_SWING_EMP (TOP_OFFSET + 0x04)
+# define DP_TX0_VOLT_SWING_MASK 0x3
+# define DP_TX0_VOLT_SWING_SHIFT 0
+# define DP_TX0_PRE_EMPH_MASK 0xc
+# define DP_TX0_PRE_EMPH_SHIFT 2
+# define DP_TX1_VOLT_SWING_MASK 0x300
+# define DP_TX1_VOLT_SWING_SHIFT 8
+# define DP_TX1_PRE_EMPH_MASK 0xc00
+# define DP_TX2_VOLT_SWING_MASK 0x30000
+# define DP_TX2_PRE_EMPH_MASK 0xc0000
+# define DP_TX3_VOLT_SWING_MASK 0x3000000
+# define DP_TX3_PRE_EMPH_MASK 0xc000000
+
+#define MTK_DP_TOP_RESET_AND_PROBE (TOP_OFFSET + 0x20)
+# define SW_RST_B_SHIFT 0
+# define SW_RST_B_PHYD (BIT(4) << SW_RST_B_SHIFT)
+
+#define MTK_DP_TOP_IRQ_STATUS (TOP_OFFSET + 0x28)
+# define RGS_IRQ_STATUS_SHIFT 0
+# define RGS_IRQ_STATUS_TRANSMITTER (BIT(1) << RGS_IRQ_STATUS_SHIFT)
+
+#define MTK_DP_TOP_IRQ_MASK (TOP_OFFSET + 0x2C)
+# define IRQ_MASK_AUX_TOP_IRQ BIT(2)
+
+#define MTK_DP_TOP_MEM_PD (TOP_OFFSET + 0x38)
+# define MEM_ISO_EN_SHIFT 0
+# define FUSE_SEL_SHIFT 2
+
+#define DP_PHY_DIG_PLL_CTL_1 0x1014
+# define TPLL_SSC_EN BIT(3)
+
+#define DP_PHY_DIG_BIT_RATE 0x103C
+# define BIT_RATE_RBR 0
+# define BIT_RATE_HBR 1
+# define BIT_RATE_HBR2 2
+# define BIT_RATE_HBR3 3
+
+#define DP_PHY_DIG_SW_RST 0x1038
+# define DP_GLB_SW_RST_PHYD BIT(0)
+
+#define MTK_DP_LANE0_DRIVING_PARAM_3 0x1138
+#define MTK_DP_LANE1_DRIVING_PARAM_3 0x1238
+#define MTK_DP_LANE2_DRIVING_PARAM_3 0x1338
+#define MTK_DP_LANE3_DRIVING_PARAM_3 0x1438
+# define XTP_LN_TX_LCTXC0_SW0_PRE0_DEFAULT 0x10
+# define XTP_LN_TX_LCTXC0_SW0_PRE1_DEFAULT (0x14 << 8)
+# define XTP_LN_TX_LCTXC0_SW0_PRE2_DEFAULT (0x18 << 16)
+# define XTP_LN_TX_LCTXC0_SW0_PRE3_DEFAULT (0x20 << 24)
+# define DRIVING_PARAM_3_DEFAULT (XTP_LN_TX_LCTXC0_SW0_PRE0_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW0_PRE1_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW0_PRE2_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW0_PRE3_DEFAULT)
+
+#define MTK_DP_LANE0_DRIVING_PARAM_4 0x113C
+#define MTK_DP_LANE1_DRIVING_PARAM_4 0x123C
+#define MTK_DP_LANE2_DRIVING_PARAM_4 0x133C
+#define MTK_DP_LANE3_DRIVING_PARAM_4 0x143C
+# define XTP_LN_TX_LCTXC0_SW1_PRE0_DEFAULT 0x18
+# define XTP_LN_TX_LCTXC0_SW1_PRE1_DEFAULT (0x1e << 8)
+# define XTP_LN_TX_LCTXC0_SW1_PRE2_DEFAULT (0x24 << 16)
+# define XTP_LN_TX_LCTXC0_SW2_PRE0_DEFAULT (0x20 << 24)
+# define DRIVING_PARAM_4_DEFAULT (XTP_LN_TX_LCTXC0_SW1_PRE0_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW1_PRE1_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW1_PRE2_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW2_PRE0_DEFAULT)
+
+#define MTK_DP_LANE0_DRIVING_PARAM_5 0x1140
+#define MTK_DP_LANE1_DRIVING_PARAM_5 0x1240
+#define MTK_DP_LANE2_DRIVING_PARAM_5 0x1340
+#define MTK_DP_LANE3_DRIVING_PARAM_5 0x1440
+# define XTP_LN_TX_LCTXC0_SW2_PRE1_DEFAULT 0x28
+# define XTP_LN_TX_LCTXC0_SW3_PRE0_DEFAULT (0x30 << 8)
+# define DRIVING_PARAM_5_DEFAULT (XTP_LN_TX_LCTXC0_SW2_PRE1_DEFAULT | \
+ XTP_LN_TX_LCTXC0_SW3_PRE0_DEFAULT)
+
+#define MTK_DP_LANE0_DRIVING_PARAM_6 0x1144
+#define MTK_DP_LANE1_DRIVING_PARAM_6 0x1244
+#define MTK_DP_LANE2_DRIVING_PARAM_6 0x1344
+#define MTK_DP_LANE3_DRIVING_PARAM_6 0x1444
+# define XTP_LN_TX_LCTXCP1_SW0_PRE0_DEFAULT 0x00
+# define XTP_LN_TX_LCTXCP1_SW0_PRE1_DEFAULT (0x04 << 8)
+# define XTP_LN_TX_LCTXCP1_SW0_PRE2_DEFAULT (0x08 << 16)
+# define XTP_LN_TX_LCTXCP1_SW0_PRE3_DEFAULT (0x10 << 24)
+# define DRIVING_PARAM_6_DEFAULT (XTP_LN_TX_LCTXCP1_SW0_PRE0_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW0_PRE1_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW0_PRE2_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW0_PRE3_DEFAULT)
+
+#define MTK_DP_LANE0_DRIVING_PARAM_7 0x1148
+#define MTK_DP_LANE1_DRIVING_PARAM_7 0x1248
+#define MTK_DP_LANE2_DRIVING_PARAM_7 0x1348
+#define MTK_DP_LANE3_DRIVING_PARAM_7 0x1448
+# define XTP_LN_TX_LCTXCP1_SW1_PRE0_DEFAULT 0x00
+# define XTP_LN_TX_LCTXCP1_SW1_PRE1_DEFAULT (0x06 << 8)
+# define XTP_LN_TX_LCTXCP1_SW1_PRE2_DEFAULT (0x0c << 16)
+# define XTP_LN_TX_LCTXCP1_SW2_PRE0_DEFAULT (0x00 << 24)
+# define DRIVING_PARAM_7_DEFAULT (XTP_LN_TX_LCTXCP1_SW1_PRE0_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW1_PRE1_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW1_PRE2_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW2_PRE0_DEFAULT)
+
+#define MTK_DP_LANE0_DRIVING_PARAM_8 0x114C
+#define MTK_DP_LANE1_DRIVING_PARAM_8 0x124C
+#define MTK_DP_LANE2_DRIVING_PARAM_8 0x134C
+#define MTK_DP_LANE3_DRIVING_PARAM_8 0x144C
+# define XTP_LN_TX_LCTXCP1_SW2_PRE1_DEFAULT 0x08
+# define XTP_LN_TX_LCTXCP1_SW3_PRE0_DEFAULT (0x00 << 8)
+# define DRIVING_PARAM_8_DEFAULT (XTP_LN_TX_LCTXCP1_SW2_PRE1_DEFAULT | \
+ XTP_LN_TX_LCTXCP1_SW3_PRE0_DEFAULT)
+
+#endif /*_MTK_DP_REG_H_*/
--
2.33.0
