[RFC PATCH 2/2] drm/mediatek: add mtk8195 hdmi display driver

From: Guillaume Ranquet
Date: Sun Nov 07 2021 - 19:16:22 EST

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Signed-off-by: Guillaume Ranquet <granquet@xxxxxxxxxxxx>
Change-Id: I6399dec26cfe56a338c2ca96989cb7cbd14e292b
---
drivers/gpu/drm/mediatek/Kconfig | 9 +
drivers/gpu/drm/mediatek/Makefile | 2 +
drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 219 +-
drivers/gpu/drm/mediatek/mtk_hdmi_common.h | 24 +-
drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c | 1835 +++++++++++++++++
drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h | 26 +
.../gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.c | 530 +++++
.../gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.h | 20 +
.../gpu/drm/mediatek/mtk_mt8195_hdmi_regs.h | 329 +++
9 files changed, 2932 insertions(+), 62 deletions(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.c
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.h
create mode 100644 drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_regs.h

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index 0df75bceb74e..76cc402cbd75 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -31,3 +31,12 @@ config DRM_MEDIATEK_HDMI
help
DRM/KMS HDMI driver for Mediatek SoCs

+config DRM_MEDIATEK_HDMI_MT8195_SUSPEND_LOW_POWER
+ tristate "DRM HDMI SUSPEND LOW POWER Support for Mediatek mt8195 SoCs"
+ depends on DRM_MEDIATEK_HDMI
+ help
+ DRM/KMS HDMI SUSPEND_LOW_POWER for Mediatek SoCs.
+ Choose this option if you want to disable/enable
+ clock and power domain when platform enter suspend,
+ and this config depends on DRM_MEDIATEK_HDMI.
+
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index 107b6fbbdbf7..477c0648643c 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -26,6 +26,8 @@ mediatek-drm-hdmi-objs := mtk_cec.o \
mtk_hdmi.o \
mtk_hdmi_ddc.o \
mtk_hdmi_common.o \
+ mtk_mt8195_hdmi.o \
+ mtk_mt8195_hdmi_ddc.o \

obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
index 3c38a3e73920..19083be0978a 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
@@ -1,5 +1,15 @@
#include "mtk_hdmi_common.h"

+const char *const mtk_hdmi_clk_names_mt8195[MTK_MT8195_HDMI_CLK_COUNT] = {
+ [MTK_MT8195_HDMI_CLK_UNIVPLL_D6D4] = "univpll_d6_d4",
+ [MTK_MT8195_HDMI_CLK_MSDCPLL_D2] = "msdcpll_d2",
+ [MTK_MT8195_HDMI_CLK_HDMI_APB_SEL] = "hdmi_apb_sel",
+ [MTK_MT8195_HDMI_UNIVPLL_D4D8] = "univpll_d4_d8",
+ [MTK_MT8195_HDIM_HDCP_SEL] = "hdcp_sel",
+ [MTK_MT8195_HDMI_HDCP_24M_SEL] = "hdcp24_sel",
+ [MTK_MT8195_HDMI_VPP_SPLIT_HDMI] = "split_hdmi",
+};
+
const char * const mtk_hdmi_clk_names_mt8183[MTK_MT8183_HDMI_CLK_COUNT] = {
[MTK_MT8183_HDMI_CLK_HDMI_PIXEL] = "pixel",
[MTK_MT8183_HDMI_CLK_HDMI_PLL] = "pll",
@@ -138,6 +148,18 @@ int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, u8 *buffer, size_t bufsz
return err;
}

+ if(hdmi->conf && hdmi->conf->is_mt8195) {
+ frame.colorimetry = hdmi->colorimtery;
+ //no need, since we cannot support other extended colorimetry?
+ if (frame.colorimetry == HDMI_COLORIMETRY_EXTENDED)
+ frame.extended_colorimetry = hdmi->extended_colorimetry;
+
+ /* quantiation range:limited or full */
+ if (frame.colorspace == HDMI_COLORSPACE_RGB)
+ frame.quantization_range = hdmi->quantization_range;
+ else
+ frame.ycc_quantization_range = hdmi->ycc_quantization_range;
+ }
err = hdmi_avi_infoframe_pack(&frame, buffer, bufsz);

if (err < 0) {
@@ -155,6 +177,11 @@ void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi, u8 *buffer_spd, size_t bufsz
mtk_hdmi_setup_spd_infoframe(hdmi, buffer_spd, bufsz_spd, "mediatek", "On-chip HDMI");
}

+static struct mtk_hdmi_ddc *hdmi_ddc_ctx_from_mtk_hdmi(struct mtk_hdmi *hdmi)
+{
+ return container_of(hdmi->ddc_adpt, struct mtk_hdmi_ddc, adap);
+}
+
int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
struct platform_device *pdev, const char *const *clk_names, size_t num_clocks)
{
@@ -173,39 +200,41 @@ int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
return ret;
}

- /* The CEC module handles HDMI hotplug detection */
- cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
- if (!cec_np) {
- dev_err(dev, "Failed to find CEC node\n");
- return -EINVAL;
- }
+ if (!hdmi->conf || !hdmi->conf->is_mt8195) {
+ /* The CEC module handles HDMI hotplug detection */
+ cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
+ if (!cec_np) {
+ dev_err(dev, "Failed to find CEC node\n");
+ return -EINVAL;
+ }

- cec_pdev = of_find_device_by_node(cec_np);
- if (!cec_pdev) {
- dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
- cec_np);
+ cec_pdev = of_find_device_by_node(cec_np);
+ if (!cec_pdev) {
+ dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
+ cec_np);
+ of_node_put(cec_np);
+ return -EPROBE_DEFER;
+ }
of_node_put(cec_np);
- return -EPROBE_DEFER;
- }
- of_node_put(cec_np);
- hdmi->cec_dev = &cec_pdev->dev;
- /*
- * The mediatek,syscon-hdmi property contains a phandle link to the
- * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
- * registers it contains.
- */
- regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");
- ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,
- &hdmi->sys_offset);
- if (IS_ERR(regmap))
- ret = PTR_ERR(regmap);
- if (ret) {
- dev_err(dev,
- "Failed to get system configuration registers: %d\n",
- ret);
- goto put_device;
+ hdmi->cec_dev = &cec_pdev->dev;
+ /*
+ * The mediatek,syscon-hdmi property contains a phandle link to the
+ * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
+ * registers it contains.
+ */
+ regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");
+ ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,
+ &hdmi->sys_offset);
+ if (IS_ERR(regmap))
+ ret = PTR_ERR(regmap);
+ if (ret) {
+ dev_err(dev,
+ "Failed to get system configuration registers: %d\n",
+ ret);
+ goto put_device;
+ }
+ hdmi->sys_regmap = regmap;
}
- hdmi->sys_regmap = regmap;

mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem) {
@@ -219,20 +248,22 @@ int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
goto put_device;
}

- remote = of_graph_get_remote_node(np, 1, 0);
- if (!remote) {
- ret = -EINVAL;
- goto put_device;
- }
-
- if (!of_device_is_compatible(remote, "hdmi-connector")) {
- hdmi->next_bridge = of_drm_find_bridge(remote);
- if (!hdmi->next_bridge) {
- dev_err(dev, "Waiting for external bridge\n");
- of_node_put(remote);
- ret = -EPROBE_DEFER;
+ if (!hdmi->conf || !hdmi->conf->is_mt8195) {
+ remote = of_graph_get_remote_node(np, 1, 0);
+ if (!remote) {
+ ret = -EINVAL;
goto put_device;
}
+
+ if (!of_device_is_compatible(remote, "hdmi-connector")) {
+ hdmi->next_bridge = of_drm_find_bridge(remote);
+ if (!hdmi->next_bridge) {
+ dev_err(dev, "Waiting for external bridge\n");
+ of_node_put(remote);
+ ret = -EPROBE_DEFER;
+ goto put_device;
+ }
+ }
}

i2c_np = of_parse_phandle(pdev->dev.of_node, "ddc-i2c-bus", 0);
@@ -251,9 +282,16 @@ int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
goto put_device;
}

+ //TODO: rework this... this is ugly
+ if (hdmi->conf && hdmi->conf->is_mt8195) {
+ ddc = hdmi_ddc_ctx_from_mtk_hdmi(hdmi);
+ ddc->regs = hdmi->regs;
+ }
+
return 0;
put_device:
- put_device(hdmi->cec_dev);
+ if (!hdmi->conf || !hdmi->conf->is_mt8195)
+ put_device(hdmi->cec_dev);
return ret;
}

@@ -265,7 +303,10 @@ static int mtk_hdmi_register_audio_driver(struct device *dev)
.data = hdmi,
};

- set_hdmi_codec_pdata_mt8183(&codec_data);
+ if(hdmi->conf && hdmi->conf->is_mt8195)
+ set_hdmi_codec_pdata_mt8195(&codec_data);
+ else
+ set_hdmi_codec_pdata_mt8183(&codec_data);

pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
PLATFORM_DEVID_AUTO, &codec_data,
@@ -297,15 +338,23 @@ int mtk_drm_hdmi_probe(struct platform_device *pdev)
return ret;
}

- ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, mtk_hdmi_clk_names_mt8183, ARRAY_SIZE(mtk_hdmi_clk_names_mt8183));
+ if(hdmi->conf && hdmi->conf->is_mt8195)
+ ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, mtk_hdmi_clk_names_mt8195, ARRAY_SIZE(mtk_hdmi_clk_names_mt8195));
+ else
+ ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, mtk_hdmi_clk_names_mt8183, ARRAY_SIZE(mtk_hdmi_clk_names_mt8183));

if (ret)
return ret;

platform_set_drvdata(pdev, hdmi);

- mtk_hdmi_output_init_mt8183(hdmi);
- hdmi->bridge.funcs = &mtk_mt8183_hdmi_bridge_funcs;
+ if (hdmi->conf && hdmi->conf->is_mt8195) {
+ mtk_hdmi_output_init_mt8195(hdmi);
+ hdmi->bridge.funcs = &mtk_mt8195_hdmi_bridge_funcs;
+ } else {
+ mtk_hdmi_output_init_mt8183(hdmi);
+ hdmi->bridge.funcs = &mtk_mt8183_hdmi_bridge_funcs;
+ }

hdmi->bridge.of_node = pdev->dev.of_node;
drm_bridge_add(&hdmi->bridge);
@@ -324,7 +373,10 @@ int mtk_drm_hdmi_remove(struct platform_device *pdev)

drm_bridge_remove(&hdmi->bridge);

- mtk_hdmi_clk_disable_mt8183(hdmi);
+ if(hdmi->conf && hdmi->conf->is_mt8195)
+ mtk_hdmi_clk_disable_mt8195(hdmi);
+ else
+ mtk_hdmi_clk_disable_mt8183(hdmi);
i2c_put_adapter(hdmi->ddc_adpt);

return 0;
@@ -339,6 +391,13 @@ static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
.cea_modes_only = true,
};

+static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8195 = {
+ .is_mt8195 = true,
+#ifdef CONFIG_DRM_MEDIATEK_HDMI_MT8195_SUSPEND_LOW_POWER
+ .low_power = true,
+#endif
+};
+
static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
{ .compatible = "mediatek,mt2701-hdmi",
.data = &mtk_hdmi_conf_mt2701,
@@ -348,6 +407,9 @@ static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
},
{ .compatible = "mediatek,mt8173-hdmi",
},
+ { .compatible = "mediatek,mt8195-hdmi",
+ .data = &mtk_hdmi_conf_mt8195,
+ },
{}
};
MODULE_DEVICE_TABLE(of, mtk_drm_hdmi_of_ids);
@@ -357,30 +419,64 @@ static __maybe_unused int mtk_hdmi_suspend(struct device *dev)
{
struct mtk_hdmi *hdmi = dev_get_drvdata(dev);

- device_set_wakeup_path(dev);
- dev_dbg(dev, "hdmi suspend success!\n");
+ if(hdmi->conf && hdmi->conf->is_mt8195 && hdmi->conf->low_power) {

- mtk_hdmi_clk_disable_mt8183(hdmi);
+ if (hdmi->power_clk_enabled) {
+ mtk_hdmi_clk_disable_mt8195(hdmi);
+ pm_runtime_put_sync(hdmi->dev);
+ hdmi->power_clk_enabled = false;
+ }

- return 0;
+ dev_dbg(dev, "hdmi suspend success!\n");
+
+ return 0;
+ } else {
+ device_set_wakeup_path(dev);
+ dev_dbg(dev, "hdmi suspend success!\n");
+
+ if(!hdmi->conf || !hdmi->conf->is_mt8195)
+ mtk_hdmi_clk_disable_mt8183(hdmi);
+
+ return 0;
+ }
}

static __maybe_unused int mtk_hdmi_resume(struct device *dev)
{
- int ret = 0;
+
struct mtk_hdmi *hdmi = dev_get_drvdata(dev);

- //mtk_hdmi_clk_enable(hdmi);
+ if(hdmi->conf && hdmi->conf->is_mt8195 && hdmi->conf->low_power) {

- dev_dbg(dev, "hdmi resume success!\n");
+ if (!hdmi->power_clk_enabled) {
+ pm_runtime_get_sync(hdmi->dev);

- //TODO:
- //ret = mtk_hdmi_clk_enable_audio(hdmi);
- if (ret) {
- dev_err(dev, "hdmi resume failed!\n");
- }
+ //TODO:
+ //mtk_hdmi_clk_enable(hdmi);
+ hdmi->power_clk_enabled = true;
+ }

- return ret;
+ dev_dbg(dev, "hdmi resume success!\n");
+ return 0;
+ } else {
+
+
+ int ret = 0;
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ //mtk_hdmi_clk_enable(hdmi);
+
+ dev_dbg(dev, "hdmi resume success!\n");
+
+ //TODO:
+ //if(!hdmi->conf || !hdmi->conf->is_mt8195)
+ //ret = mtk_hdmi_clk_enable_audio(hdmi);
+ if (ret) {
+ dev_err(dev, "hdmi resume failed!\n");
+ }
+
+ return ret;
+ }
}
#endif

@@ -400,6 +496,7 @@ static struct platform_driver mtk_hdmi_driver = {
static struct platform_driver * const mtk_hdmi_drivers[] = {
&mtk_hdmi_ddc_driver,
&mtk_cec_driver,
+ &mtk_hdmi_mt8195_ddc_driver,
&mtk_hdmi_driver,
};

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
index f60b5b8bf99e..a58946d3848b 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.h
@@ -25,12 +25,17 @@

#include <sound/hdmi-codec.h>

+//TODO: see what can be done here... :-/
+#include "mtk_mt8195_hdmi_ddc.h"
+#include "mtk_mt8195_hdmi.h"
#include "mtk_cec.h"
#include "mtk_hdmi.h"

struct mtk_hdmi_conf {
bool tz_disabled;
bool cea_modes_only;
+ bool is_mt8195;
+ bool low_power;
unsigned long max_mode_clock;
};

@@ -127,6 +132,17 @@ enum hdmi_aud_channel_swap_type {
HDMI_AUD_SWAP_LR_STATUS,
};

+enum mtk_hdmi_clk_id_mt8195 {
+ MTK_MT8195_HDMI_CLK_UNIVPLL_D6D4,
+ MTK_MT8195_HDMI_CLK_MSDCPLL_D2,
+ MTK_MT8195_HDMI_CLK_HDMI_APB_SEL,
+ MTK_MT8195_HDMI_UNIVPLL_D4D8,
+ MTK_MT8195_HDIM_HDCP_SEL,
+ MTK_MT8195_HDMI_HDCP_24M_SEL,
+ MTK_MT8195_HDMI_VPP_SPLIT_HDMI,
+ MTK_MT8195_HDMI_CLK_COUNT,
+};
+
enum mtk_hdmi_clk_id_mt8183 {
MTK_MT8183_HDMI_CLK_HDMI_PIXEL,
MTK_MT8183_HDMI_CLK_HDMI_PLL,
@@ -136,6 +152,7 @@ enum mtk_hdmi_clk_id_mt8183 {
};

extern const char *const mtk_hdmi_clk_names_mt8183[MTK_MT8183_HDMI_CLK_COUNT];
+extern const char *const mtk_hdmi_clk_names_mt8195[MTK_MT8195_HDMI_CLK_COUNT];

enum hdmi_hpd_state {
HDMI_PLUG_OUT = 0,
@@ -160,7 +177,8 @@ struct mtk_hdmi {
const struct mtk_hdmi_conf *conf;
struct phy *phy;
struct i2c_adapter *ddc_adpt;
- struct clk *clk[MTK_MT8183_HDMI_CLK_COUNT];
+ //TODO: array size is max(MTK_MT8183_HDMI_CLK_COUNT, MTK_MT8195_HDMI_CLK_COUNT)... dynamically allocate instead?
+ struct clk *clk[MTK_MT8195_HDMI_CLK_COUNT];
struct drm_display_mode mode;
bool dvi_mode;
struct regmap *sys_regmap;
@@ -228,9 +246,13 @@ int mtk_drm_hdmi_probe(struct platform_device *pdev);
int mtk_drm_hdmi_remove(struct platform_device *pdev);

//TODO: do better than this? function pointers?
+extern const struct drm_bridge_funcs mtk_mt8195_hdmi_bridge_funcs;
extern const struct drm_bridge_funcs mtk_mt8183_hdmi_bridge_funcs;
void mtk_hdmi_output_init_mt8183(struct mtk_hdmi *hdmi);
+void mtk_hdmi_output_init_mt8195(struct mtk_hdmi *hdmi);
+void mtk_hdmi_clk_disable_mt8195(struct mtk_hdmi *hdmi);
void mtk_hdmi_clk_disable_mt8183(struct mtk_hdmi *hdmi);
+void set_hdmi_codec_pdata_mt8195(struct hdmi_codec_pdata *codec_data);
void set_hdmi_codec_pdata_mt8183(struct hdmi_codec_pdata *codec_data);

#endif //_MTK_HDMI_COMMON_H
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
new file mode 100644
index 000000000000..3fa928b79ed2
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.c
@@ -0,0 +1,1835 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2021 BayLibre, SAS
+ */
+
+#include <linux/arm-smccc.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/debugfs.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
+#include <linux/pm_wakeup.h>
+#include <linux/timer.h>
+
+#include <drm/drm_displayid.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_scdc_helper.h>
+
+#include "mtk_drm_crtc.h"
+#include "mtk_mt8195_hdmi.h"
+#include "mtk_hdmi_common.h"
+#include "mtk_mt8195_hdmi_ddc.h"
+#include "mtk_mt8195_hdmi_regs.h"
+
+#define RGB444_8bit BIT(0)
+#define RGB444_10bit BIT(1)
+#define RGB444_12bit BIT(2)
+#define RGB444_16bit BIT(3)
+
+#define YCBCR444_8bit BIT(4)
+#define YCBCR444_10bit BIT(5)
+#define YCBCR444_12bit BIT(6)
+#define YCBCR444_16bit BIT(7)
+
+#define YCBCR422_8bit_NO_SUPPORT BIT(8)
+#define YCBCR422_10bit_NO_SUPPORT BIT(9)
+#define YCBCR422_12bit BIT(10)
+#define YCBCR422_16bit_NO_SUPPORT BIT(11)
+
+#define YCBCR420_8bit BIT(12)
+#define YCBCR420_10bit BIT(13)
+#define YCBCR420_12bit BIT(14)
+#define YCBCR420_16bit BIT(15)
+
+#define BYTES_TO_UINT32(msb, b1, b2, lsb) \
+ (((msb & 0xff) << 24) + ((b1 & 0xff) << 16) + ((b2 & 0xff) << 8) + \
+ ((lsb & 0xff)))
+
+static inline struct mtk_hdmi *hdmi_ctx_from_conn(struct drm_connector *c)
+{
+ return container_of(c, struct mtk_hdmi, conn);
+}
+
+static inline void mtk_hdmi_clr_all_int_status(struct mtk_hdmi *hdmi)
+{
+ /*clear all tx irq*/
+ mtk_hdmi_write(hdmi, TOP_INT_CLR00, 0xffffffff);
+ mtk_hdmi_write(hdmi, TOP_INT_CLR00, 0x00000000);
+ mtk_hdmi_write(hdmi, TOP_INT_CLR01, 0xffffffff);
+ mtk_hdmi_write(hdmi, TOP_INT_CLR01, 0x00000000);
+}
+
+static inline void mtk_hdmi_disable_all_int(struct mtk_hdmi *hdmi)
+{
+ /*disable all tx irq*/
+ mtk_hdmi_write(hdmi, TOP_INT_MASK00, 0x00000000);
+ mtk_hdmi_write(hdmi, TOP_INT_MASK01, 0x00000000);
+}
+
+static inline void mtk_hdmi_en_hdcp_reauth_int(struct mtk_hdmi *hdmi,
+ bool enable)
+{
+ if (enable)
+ mtk_hdmi_mask(hdmi, TOP_INT_MASK00,
+ HDCP2X_RX_REAUTH_REQ_DDCM_INT_UNMASK,
+ HDCP2X_RX_REAUTH_REQ_DDCM_INT_UNMASK);
+ else
+ mtk_hdmi_mask(hdmi, TOP_INT_MASK00,
+ HDCP2X_RX_REAUTH_REQ_DDCM_INT_MASK,
+ HDCP2X_RX_REAUTH_REQ_DDCM_INT_UNMASK);
+}
+
+static inline void mtk_hdmi_enable_hpd_pord_irq(struct mtk_hdmi *hdmi,
+ bool enable)
+{
+ if (enable)
+ mtk_hdmi_mask(hdmi, TOP_INT_MASK00, 0x0000000f, 0x0000000f);
+ else
+ mtk_hdmi_mask(hdmi, TOP_INT_MASK00, 0x00000000, 0x0000000f);
+}
+
+static inline void mtk_hdmi_clr_htplg_pord_irq(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, TOP_INT_CLR00, 0x0000000f, 0x0000000f);
+ mtk_hdmi_mask(hdmi, TOP_INT_CLR00, 0x00000000, 0x0000000f);
+}
+
+static inline void mtk_hdmi_set_sw_hpd(struct mtk_hdmi *hdmi, bool high)
+{
+ if (high)
+ mtk_hdmi_mask(hdmi, HDMITX_CONFIG, 0x1 << HDMITX_SW_HPD_SHIFT,
+ HDMITX_SW_HPD);
+ else
+ mtk_hdmi_mask(hdmi, HDMITX_CONFIG, 0x0 << HDMITX_SW_HPD_SHIFT,
+ HDMITX_SW_HPD);
+}
+
+static inline void mtk_hdmi_force_hdcp_hpd(struct mtk_hdmi *hdmi)
+{
+ /* force HDCP HPD to 1*/
+ mtk_hdmi_mask(hdmi, HDCP2X_CTRL_0, HDCP2X_HPD_OVR, HDCP2X_HPD_OVR);
+ mtk_hdmi_mask(hdmi, HDCP2X_CTRL_0, HDCP2X_HPD_SW, HDCP2X_HPD_SW);
+}
+
+static void mtk_hdmi_disable_hdcp_encrypt(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, HDCP2X_CTRL_0, 0x0 << HDCP2X_ENCRYPT_EN_SHIFT,
+ HDCP2X_ENCRYPT_EN);
+ mtk_hdmi_mask(hdmi, HDCP1X_CTRL, 0x0 << HDCP1X_ENC_EN_SHIFT,
+ HDCP1X_ENC_EN);
+}
+
+static void mtk_hdmi_yuv420_downsample(struct mtk_hdmi *hdmi, bool enable)
+{
+ if (enable) {
+ mtk_hdmi_mask(hdmi, HDMITX_CONFIG,
+ HDMI_YUV420_MODE | HDMITX_SW_HPD,
+ HDMI_YUV420_MODE | HDMITX_SW_HPD);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG,
+ C444_C422_CONFIG_ENABLE, C444_C422_CONFIG_ENABLE);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG,
+ C422_C420_CONFIG_ENABLE, C422_C420_CONFIG_ENABLE);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG, 0,
+ C422_C420_CONFIG_BYPASS);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG,
+ C422_C420_CONFIG_OUT_CB_OR_CR,
+ C422_C420_CONFIG_OUT_CB_OR_CR);
+ mtk_hdmi_mask(hdmi, VID_OUT_FORMAT,
+ OUTPUT_FORMAT_DEMUX_420_ENABLE,
+ OUTPUT_FORMAT_DEMUX_420_ENABLE);
+ } else {
+ mtk_hdmi_mask(hdmi, HDMITX_CONFIG, 0 | HDMITX_SW_HPD,
+ HDMI_YUV420_MODE | HDMITX_SW_HPD);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG, 0,
+ C444_C422_CONFIG_ENABLE);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG, 0,
+ C422_C420_CONFIG_ENABLE);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG,
+ C422_C420_CONFIG_BYPASS, C422_C420_CONFIG_BYPASS);
+ mtk_hdmi_mask(hdmi, VID_DOWNSAMPLE_CONFIG, 0,
+ C422_C420_CONFIG_OUT_CB_OR_CR);
+ mtk_hdmi_mask(hdmi, VID_OUT_FORMAT, 0,
+ OUTPUT_FORMAT_DEMUX_420_ENABLE);
+ }
+}
+
+static bool mtk_hdmi_tmds_over_340M(struct mtk_hdmi *hdmi)
+{
+ unsigned long pixel_clk, tmds_clk;
+
+ pixel_clk = hdmi->mode.clock * 1000;
+
+ /* TMDS clk frequency */
+ if (hdmi->color_depth == HDMI_8_BIT)
+ tmds_clk = pixel_clk;
+ else if (hdmi->color_depth == HDMI_10_BIT)
+ tmds_clk = pixel_clk * 5 / 4;
+ else if (hdmi->color_depth == HDMI_12_BIT)
+ tmds_clk = pixel_clk * 3 / 2;
+ else if (hdmi->color_depth == HDMI_16_BIT)
+ tmds_clk = pixel_clk * 2;
+ else
+ return -EINVAL;
+
+ if (tmds_clk >= 340000000 && hdmi->csp != HDMI_COLORSPACE_YUV420)
+ return true;
+
+ return false;
+}
+
+static inline void mtk_hdmi_enable_scrambling(struct mtk_hdmi *hdmi,
+ bool enable)
+{
+ usleep_range(100, 150);
+
+ if (enable)
+ mtk_hdmi_mask(hdmi, TOP_CFG00, SCR_ON | HDMI2_ON,
+ SCR_ON | HDMI2_ON);
+ else
+ mtk_hdmi_mask(hdmi, TOP_CFG00, SCR_OFF | HDMI2_OFF,
+ SCR_ON | HDMI2_ON);
+}
+
+static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
+{
+ if (black)
+ mtk_hdmi_mask(hdmi, TOP_VMUTE_CFG1, REG_VMUTE_EN, REG_VMUTE_EN);
+ else
+ mtk_hdmi_mask(hdmi, TOP_VMUTE_CFG1, 0, REG_VMUTE_EN);
+}
+
+static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
+{
+ if (mtk_hdmi_read(hdmi, AIP_CTRL) & DSD_EN)
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL,
+ DSD_MUTE_DATA | AUD_MUTE_FIFO_EN,
+ DSD_MUTE_DATA | AUD_MUTE_FIFO_EN);
+ else
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, AUD_MUTE_FIFO_EN,
+ AUD_MUTE_FIFO_EN);
+}
+
+static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, AUD_MUTE_DIS, AUD_MUTE_FIFO_EN);
+}
+
+static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, HDMITX_CONFIG, 0x0 << HDMITX_SW_RSTB_SHIFT,
+ HDMITX_SW_RSTB);
+ usleep_range(1, 5);
+ mtk_hdmi_mask(hdmi, HDMITX_CONFIG, 0x1 << HDMITX_SW_RSTB_SHIFT,
+ HDMITX_SW_RSTB);
+}
+
+static void mtk_hdmi_enable_hdmi_mode(struct mtk_hdmi *hdmi, bool enable)
+{
+ if (enable)
+ mtk_hdmi_mask(hdmi, TOP_CFG00, HDMI_MODE_HDMI, HDMI_MODE_HDMI);
+ else
+ mtk_hdmi_mask(hdmi, TOP_CFG00, HDMI_MODE_DVI, HDMI_MODE_HDMI);
+}
+
+static bool mtk_hdmi_sink_is_hdmi_device(struct mtk_hdmi *hdmi)
+{
+ if (hdmi->dvi_mode)
+ return false;
+ else
+ return true;
+}
+
+static void mtk_hdmi_set_deep_color(struct mtk_hdmi *hdmi, bool is_hdmi_sink)
+{
+ unsigned int deep_color = 0;
+
+ /* ycbcr422 12bit no deep color */
+ if (hdmi->csp == HDMI_COLORSPACE_YUV422) {
+ deep_color = DEEPCOLOR_MODE_8BIT;
+ } else {
+ switch (hdmi->color_depth) {
+ case HDMI_8_BIT:
+ deep_color = DEEPCOLOR_MODE_8BIT;
+ break;
+ case HDMI_10_BIT:
+ deep_color = DEEPCOLOR_MODE_10BIT;
+ break;
+ case HDMI_12_BIT:
+ deep_color = DEEPCOLOR_MODE_12BIT;
+ break;
+ case HDMI_16_BIT:
+ deep_color = DEEPCOLOR_MODE_16BIT;
+ break;
+ default:
+ WARN(1, "Unssupported color depth %d\n",
+ hdmi->color_depth);
+ }
+ }
+
+ mtk_hdmi_mask(hdmi, TOP_CFG00, deep_color, DEEPCOLOR_MODE_MASKBIT);
+
+ /* GCP */
+ mtk_hdmi_mask(hdmi, TOP_CFG00, 0, DEEPCOLOR_PAT_EN);
+ if (is_hdmi_sink && deep_color != DEEPCOLOR_MODE_8BIT)
+ mtk_hdmi_mask(hdmi, TOP_MISC_CTLR, DEEP_COLOR_ADD,
+ DEEP_COLOR_ADD);
+ else
+ mtk_hdmi_mask(hdmi, TOP_MISC_CTLR, 0, DEEP_COLOR_ADD);
+}
+
+static void mtk_hdmi_hw_audio_infoframe(struct mtk_hdmi *hdmi, u8 *buffer,
+ u8 len)
+{
+ enum hdmi_infoframe_type frame_type;
+ u8 frame_ver;
+ u8 frame_len;
+ u8 checksum;
+
+ frame_type = buffer[0];
+ frame_ver = buffer[1];
+ frame_len = buffer[2];
+ checksum = buffer[3];
+
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, AUD_DIS_WR | AUD_DIS,
+ AUD_EN_WR | AUD_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, AUD_RPT_DIS, AUD_RPT_EN);
+
+ mtk_hdmi_write(hdmi, TOP_AIF_HEADER,
+ BYTES_TO_UINT32(0, frame_len, frame_ver, frame_type));
+ mtk_hdmi_write(hdmi, TOP_AIF_PKT00,
+ BYTES_TO_UINT32(buffer[6], buffer[5], buffer[4],
+ buffer[3]));
+ mtk_hdmi_write(hdmi, TOP_AIF_PKT01,
+ BYTES_TO_UINT32(0, 0, buffer[8], buffer[7]));
+ mtk_hdmi_write(hdmi, TOP_AIF_PKT02, 0);
+ mtk_hdmi_write(hdmi, TOP_AIF_PKT03, 0);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, AUD_RPT_EN, AUD_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, AUD_EN_WR | AUD_EN,
+ AUD_EN_WR | AUD_EN);
+}
+
+static void mtk_hdmi_hw_avi_infoframe(struct mtk_hdmi *hdmi, u8 *buffer, u8 len)
+{
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, AVI_DIS_WR | AVI_DIS,
+ AVI_EN_WR | AVI_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, AVI_RPT_DIS, AVI_RPT_EN);
+
+ mtk_hdmi_write(hdmi, TOP_AVI_HEADER,
+ BYTES_TO_UINT32(0, buffer[2], buffer[1], buffer[0]));
+
+ mtk_hdmi_write(hdmi, TOP_AVI_PKT00,
+ BYTES_TO_UINT32(buffer[6], buffer[5], buffer[4],
+ buffer[3]));
+
+ mtk_hdmi_write(hdmi, TOP_AVI_PKT01,
+ BYTES_TO_UINT32(0, buffer[9], buffer[8], buffer[7]));
+
+ mtk_hdmi_write(hdmi, TOP_AVI_PKT02,
+ BYTES_TO_UINT32(buffer[13], buffer[12], buffer[11],
+ buffer[10]));
+
+ mtk_hdmi_write(hdmi, TOP_AVI_PKT03,
+ BYTES_TO_UINT32(0, buffer[16], buffer[15], buffer[14]));
+
+ mtk_hdmi_write(hdmi, TOP_AVI_PKT04, 0);
+ mtk_hdmi_write(hdmi, TOP_AVI_PKT05, 0);
+
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, AVI_RPT_EN, AVI_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, AVI_EN_WR | AVI_EN,
+ AVI_EN_WR | AVI_EN);
+}
+
+static void mtk_hdmi_hw_spd_infoframe(struct mtk_hdmi *hdmi, u8 *buffer, u8 len)
+{
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, SPD_DIS_WR | SPD_DIS,
+ SPD_EN_WR | SPD_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, SPD_RPT_DIS, SPD_RPT_EN);
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_HEADER,
+ BYTES_TO_UINT32(0, buffer[2], buffer[1], buffer[0]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT00,
+ BYTES_TO_UINT32(buffer[6], buffer[5], buffer[4],
+ buffer[3]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT01,
+ BYTES_TO_UINT32(0, buffer[9], buffer[8], buffer[7]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT02,
+ BYTES_TO_UINT32(buffer[13], buffer[12], buffer[11],
+ buffer[10]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT03,
+ BYTES_TO_UINT32(0, buffer[16], buffer[15], buffer[14]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT04,
+ BYTES_TO_UINT32(buffer[20], buffer[19], buffer[18],
+ buffer[17]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT05,
+ BYTES_TO_UINT32(0, buffer[23], buffer[22], buffer[21]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT06,
+ BYTES_TO_UINT32(buffer[27], buffer[26], buffer[25],
+ buffer[24]));
+
+ mtk_hdmi_write(hdmi, TOP_SPDIF_PKT07,
+ BYTES_TO_UINT32(0, buffer[30], buffer[29], buffer[28]));
+
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, SPD_RPT_EN, SPD_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, SPD_EN_WR | SPD_EN,
+ SPD_EN_WR | SPD_EN);
+}
+
+static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
+{
+ struct hdmi_codec_params *params = &hdmi->aud_param.codec_params;
+ struct hdmi_audio_infoframe frame;
+ u8 buffer[14];
+ ssize_t err;
+
+ memcpy(&frame, &params->cea, sizeof(struct hdmi_audio_infoframe));
+
+ err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
+ if (err < 0)
+ return err;
+
+ mtk_hdmi_hw_audio_infoframe(hdmi, buffer, sizeof(buffer));
+ return 0;
+}
+
+static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable)
+{
+ if (enable)
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, 0, AUD_PACKET_DROP);
+ else
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, AUD_PACKET_DROP,
+ AUD_PACKET_DROP);
+}
+
+static inline void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi)
+{
+ /*GCP packet */
+ mtk_hdmi_mask(hdmi, TOP_CFG01, 0, CP_CLR_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_CFG01, 0, CP_SET_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, 0, CP_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, 0, CP_EN | CP_EN_WR);
+
+ mtk_hdmi_mask(hdmi, TOP_CFG01, 0, CP_CLR_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_CFG01, CP_SET_MUTE_EN, CP_SET_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, CP_RPT_EN, CP_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, CP_EN | CP_EN_WR, CP_EN | CP_EN_WR);
+}
+
+static inline void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi)
+{
+ /*GCP packet */
+ mtk_hdmi_mask(hdmi, TOP_CFG01, 0, CP_CLR_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_CFG01, 0, CP_SET_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, 0, CP_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, 0, CP_EN | CP_EN_WR);
+
+ mtk_hdmi_mask(hdmi, TOP_CFG01, CP_CLR_MUTE_EN, CP_CLR_MUTE_EN);
+ mtk_hdmi_mask(hdmi, TOP_CFG01, 0, CP_SET_MUTE_DIS);
+ mtk_hdmi_mask(hdmi, TOP_INFO_RPT, CP_RPT_EN, CP_RPT_EN);
+ mtk_hdmi_mask(hdmi, TOP_INFO_EN, CP_EN | CP_EN_WR, CP_EN | CP_EN_WR);
+}
+
+static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool enable)
+{
+ unsigned int data;
+
+ data = mtk_hdmi_read(hdmi, AIP_CTRL);
+
+ if (enable)
+ data |= CTS_SW_SEL;
+ else
+ data &= ~CTS_SW_SEL;
+
+ mtk_hdmi_write(hdmi, AIP_CTRL, data);
+}
+
+static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi,
+ u8 *channel_status)
+{
+ /* actually, only the first 5 or 7 bytes of Channel Status
+ * contain useful information
+ */
+ mtk_hdmi_write(hdmi, AIP_I2S_CHST0,
+ BYTES_TO_UINT32(channel_status[3], channel_status[2],
+ channel_status[1], channel_status[0]));
+ mtk_hdmi_write(hdmi, AIP_I2S_CHST1,
+ BYTES_TO_UINT32(0, channel_status[6], channel_status[5],
+ channel_status[4]));
+}
+
+struct hdmi_acr_n {
+ unsigned int clock;
+ unsigned int n[3];
+};
+
+/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
+static const struct hdmi_acr_n hdmi_rec_n_table[] = {
+ /* Clock, N: 32kHz 44.1kHz 48kHz */
+ { 25175, { 4576, 7007, 6864 } },
+ { 74176, { 11648, 17836, 11648 } },
+ { 148352, { 11648, 8918, 5824 } },
+ { 296703, { 5824, 4459, 5824 } },
+ { 297000, { 3072, 4704, 5120 } },
+ { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */
+};
+
+/**
+ * hdmi_recommended_n() - Return N value recommended by HDMI specification
+ * @freq: audio sample rate in Hz
+ * @clock: rounded TMDS clock in kHz
+ */
+static int hdmi_recommended_n(unsigned int freq, unsigned int clock)
+{
+ const struct hdmi_acr_n *recommended;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
+ if (clock == hdmi_rec_n_table[i].clock)
+ break;
+ }
+
+ if (i == ARRAY_SIZE(hdmi_rec_n_table))
+ return -EINVAL;
+
+ recommended = hdmi_rec_n_table + i;
+
+ switch (freq) {
+ case 32000:
+ return recommended->n[0];
+ case 44100:
+ return recommended->n[1];
+ case 48000:
+ return recommended->n[2];
+ case 88200:
+ return recommended->n[1] * 2;
+ case 96000:
+ return recommended->n[2] * 2;
+ case 176400:
+ return recommended->n[1] * 4;
+ case 192000:
+ return recommended->n[2] * 4;
+ default:
+ return (128 * freq) / 1000;
+ }
+}
+
+static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
+{
+ switch (clock) {
+ case 25175:
+ return 25174825; /* 25.2/1.001 MHz */
+ case 74176:
+ return 74175824; /* 74.25/1.001 MHz */
+ case 148352:
+ return 148351648; /* 148.5/1.001 MHz */
+ case 296703:
+ return 296703297; /* 297/1.001 MHz */
+ default:
+ return clock * 1000;
+ }
+}
+
+static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
+ unsigned int tmds_clock, unsigned int n)
+{
+ return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
+ 128 * audio_sample_rate);
+}
+
+static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi,
+ unsigned int sample_rate,
+ unsigned int clock)
+{
+ unsigned int ncts;
+ int n;
+
+ n = hdmi_recommended_n(sample_rate, clock);
+
+ if (n == -EINVAL) {
+ DRM_ERROR("Invalid sample rate: %u\n", sample_rate);
+ return;
+ }
+
+ ncts = hdmi_expected_cts(sample_rate, clock, n);
+ mtk_hdmi_write(hdmi, AIP_N_VAL, n);
+ mtk_hdmi_write(hdmi, AIP_CTS_SVAL, ncts);
+}
+
+static void mtk_hdmi_aud_enable_packet(struct mtk_hdmi *hdmi, bool enable)
+{
+ mtk_hdmi_hw_send_aud_packet(hdmi, enable);
+}
+
+static void mtk_hdmi_aud_on_off_hw_ncts(struct mtk_hdmi *hdmi, bool on)
+{
+ mtk_hdmi_hw_ncts_enable(hdmi, on);
+}
+
+static void mtk_hdmi_audio_dsd_config(struct mtk_hdmi *hdmi,
+ unsigned char chnum, bool dsd_bypass)
+{
+ mtk_hdmi_mask(hdmi, AIP_CTRL, DSD_EN, SPDIF_EN | DSD_EN | HBRA_ON);
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, DSD_MUTE_DATA, DSD_MUTE_DATA);
+ if (dsd_bypass)
+ mtk_hdmi_write(hdmi, TOP_AUD_MAP, 0x75316420);
+ else
+ mtk_hdmi_write(hdmi, TOP_AUD_MAP, 0x04230150);
+
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, 0, I2S2DSD_EN);
+}
+
+static inline void mtk_hdmi_hw_i2s_fifo_map(struct mtk_hdmi *hdmi,
+ unsigned int fifo_mapping)
+{
+ mtk_hdmi_mask(hdmi, AIP_I2S_CTRL, fifo_mapping,
+ FIFO3_MAP | FIFO2_MAP | FIFO1_MAP | FIFO0_MAP);
+}
+
+static inline void mtk_hdmi_hw_i2s_ch_number(struct mtk_hdmi *hdmi,
+ unsigned int chnum)
+{
+ mtk_hdmi_mask(hdmi, AIP_CTRL, chnum << I2S_EN_SHIFT, I2S_EN);
+}
+
+static void mtk_hdmi_hw_i2s_ch_mapping(struct mtk_hdmi *hdmi,
+ unsigned char chnum,
+ unsigned char mapping)
+{
+ unsigned int bdata;
+
+ switch (chnum) {
+ case 2:
+ bdata = 0x1;
+ break;
+ case 3:
+ bdata = 0x3;
+ break;
+ case 6:
+ if (mapping == 0x0E) {
+ bdata = 0xf;
+ break;
+ }
+ fallthrough;
+ case 5:
+ bdata = 0x7;
+ break;
+ case 7:
+ case 8:
+ bdata = 0xf;
+ break;
+ default:
+ bdata = 0x1;
+ }
+
+ mtk_hdmi_hw_i2s_fifo_map(hdmi, (MAP_SD3 << 6) | (MAP_SD2 << 4) |
+ (MAP_SD1 << 2) | (MAP_SD0 << 0));
+ mtk_hdmi_hw_i2s_ch_number(hdmi, bdata);
+
+ if (chnum == 2)
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, LAYOUT0, LAYOUT1);
+ else
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, LAYOUT1, LAYOUT1);
+}
+
+static void mtk_hdmi_i2s_data_fmt(struct mtk_hdmi *hdmi, unsigned char fmt)
+{
+ unsigned int u4Data;
+
+ u4Data = mtk_hdmi_read(hdmi, AIP_I2S_CTRL);
+ u4Data &= ~(WS_HIGH | I2S_1ST_BIT_NOSHIFT | JUSTIFY_RIGHT);
+
+ switch (fmt) {
+ case HDMI_I2S_MODE_RJT_24BIT:
+ case HDMI_I2S_MODE_RJT_16BIT:
+ u4Data |= (WS_HIGH | I2S_1ST_BIT_NOSHIFT | JUSTIFY_RIGHT);
+ u4Data |= (WS_HIGH | I2S_1ST_BIT_NOSHIFT | JUSTIFY_RIGHT);
+ break;
+
+ case HDMI_I2S_MODE_LJT_24BIT:
+ case HDMI_I2S_MODE_LJT_16BIT:
+ u4Data |= (WS_HIGH | I2S_1ST_BIT_NOSHIFT);
+ u4Data |= (WS_HIGH | I2S_1ST_BIT_NOSHIFT);
+ break;
+
+ case HDMI_I2S_MODE_I2S_24BIT:
+ case HDMI_I2S_MODE_I2S_16BIT:
+ default:
+ break;
+ }
+ mtk_hdmi_write(hdmi, AIP_I2S_CTRL, u4Data);
+}
+
+static inline void mtk_hdmi_i2s_sck_edge(struct mtk_hdmi *hdmi,
+ unsigned int edge)
+{
+ mtk_hdmi_mask(hdmi, AIP_I2S_CTRL, edge, SCK_EDGE_RISE);
+}
+
+static inline void mtk_hdmi_i2s_cbit_order(struct mtk_hdmi *hdmi,
+ unsigned int cbit)
+{
+ mtk_hdmi_mask(hdmi, AIP_I2S_CTRL, cbit, CBIT_ORDER_SAME);
+}
+
+static inline void mtk_hdmi_i2s_vbit(struct mtk_hdmi *hdmi, unsigned int vbit)
+{
+ mtk_hdmi_mask(hdmi, AIP_I2S_CTRL, vbit, VBIT_COM);
+}
+
+static inline void mtk_hdmi_i2s_data_direction(struct mtk_hdmi *hdmi,
+ unsigned int data_dir)
+{
+ mtk_hdmi_mask(hdmi, AIP_I2S_CTRL, data_dir, DATA_DIR_LSB);
+}
+
+static inline void mtk_hdmi_hw_audio_type(struct mtk_hdmi *hdmi,
+ unsigned int spdif_i2s)
+{
+ mtk_hdmi_mask(hdmi, AIP_CTRL, spdif_i2s << SPDIF_EN_SHIFT, SPDIF_EN);
+}
+
+static unsigned char mtk_hdmi_get_i2s_ch_mapping(struct mtk_hdmi *hdmi,
+ unsigned char channel_type)
+{
+ unsigned char FC, LFE, RR, RL, RRC, RLC, RC;
+ unsigned char ch_number = 0;
+ unsigned char channelmap = 0x00;
+
+ switch (channel_type) {
+ case HDMI_AUD_CHAN_TYPE_1_0:
+ case HDMI_AUD_CHAN_TYPE_2_0:
+ LFE = 0;
+ ch_number = 2;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_1_1:
+ case HDMI_AUD_CHAN_TYPE_2_1:
+ LFE = 1;
+ ch_number = 3;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_3_0:
+ FC = 1;
+ LFE = 0;
+ ch_number = 3;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_3_0_LRS:
+ RR = 1;
+ RL = 1;
+ LFE = 0;
+ ch_number = 4;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_3_1_LRS:
+ FC = 0;
+ LFE = 1;
+ RR = 1;
+ RL = 1;
+ ch_number = 5;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_4_0_CLRS:
+ FC = 1;
+ LFE = 0;
+ RR = 1;
+ RL = 1;
+ ch_number = 5;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_4_1_CLRS:
+ FC = 1;
+ LFE = 1;
+ RR = 1;
+ RL = 1;
+ ch_number = 6;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_3_1:
+ FC = 1;
+ LFE = 1;
+ ch_number = 4;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_4_0:
+ RR = 1;
+ RL = 1;
+ LFE = 0;
+ ch_number = 4;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_4_1:
+ RR = 1;
+ RL = 1;
+ LFE = 1;
+ ch_number = 5;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_5_0:
+ FC = 1;
+ LFE = 0;
+ RR = 1;
+ RL = 1;
+ ch_number = 5;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_5_1:
+ FC = 1;
+ LFE = 1;
+ RR = 1;
+ RL = 1;
+ ch_number = 6;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_6_0:
+ case HDMI_AUD_CHAN_TYPE_6_0_CS:
+ case HDMI_AUD_CHAN_TYPE_6_0_CH:
+ case HDMI_AUD_CHAN_TYPE_6_0_OH:
+ case HDMI_AUD_CHAN_TYPE_6_0_CHR:
+ FC = 1;
+ LFE = 0;
+ RR = 1;
+ RL = 1;
+ RC = 1;
+ ch_number = 6;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_6_1:
+ case HDMI_AUD_CHAN_TYPE_6_1_CS:
+ case HDMI_AUD_CHAN_TYPE_6_1_CH:
+ case HDMI_AUD_CHAN_TYPE_6_1_OH:
+ case HDMI_AUD_CHAN_TYPE_6_1_CHR:
+ FC = 1;
+ LFE = 1;
+ RR = 1;
+ RL = 1;
+ RC = 1;
+ ch_number = 7;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_7_0:
+ case HDMI_AUD_CHAN_TYPE_7_0_LH_RH:
+ case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR:
+ case HDMI_AUD_CHAN_TYPE_7_0_LC_RC:
+ case HDMI_AUD_CHAN_TYPE_7_0_LW_RW:
+ case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD:
+ case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS:
+ case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS:
+ case HDMI_AUD_CHAN_TYPE_7_0_CS_CH:
+ case HDMI_AUD_CHAN_TYPE_7_0_CS_OH:
+ case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR:
+ case HDMI_AUD_CHAN_TYPE_7_0_CH_OH:
+ case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR:
+ case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR:
+ case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR:
+ case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS:
+ FC = 1;
+ LFE = 0;
+ RR = 1;
+ RL = 1;
+ RRC = 1;
+ RLC = 1;
+ ch_number = 7;
+ break;
+
+ case HDMI_AUD_CHAN_TYPE_7_1:
+ case HDMI_AUD_CHAN_TYPE_7_1_LH_RH:
+ case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR:
+ case HDMI_AUD_CHAN_TYPE_7_1_LC_RC:
+ case HDMI_AUD_CHAN_TYPE_7_1_LW_RW:
+ case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD:
+ case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS:
+ case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS:
+ case HDMI_AUD_CHAN_TYPE_7_1_CS_CH:
+ case HDMI_AUD_CHAN_TYPE_7_1_CS_OH:
+ case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR:
+ case HDMI_AUD_CHAN_TYPE_7_1_CH_OH:
+ case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR:
+ case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR:
+ case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR:
+ FC = 1;
+ LFE = 1;
+ RR = 1;
+ RL = 1;
+ RRC = 1;
+ RLC = 1;
+ ch_number = 8;
+ break;
+
+ default:
+ ch_number = 2;
+ break;
+ }
+
+ switch (ch_number) {
+ case 8:
+ break;
+
+ case 7:
+ break;
+
+ case 6:
+ if (FC == 1 && RR == 1 && RL == 1 && RC == 1 && LFE == 0) {
+ /* 6.0 */
+ channelmap = 0x0E;
+ } else if (FC == 1 && RR == 1 && RL == 1 && RC == 0 &&
+ LFE == 1) {
+ /* 5.1 */
+ channelmap = 0x0B;
+ }
+ break;
+
+ case 5:
+ break;
+
+ case 4:
+ if (RR == 1 && RL == 1 && LFE == 0)
+ channelmap = 0x08;
+ else if (FC == 1 && LFE == 1)
+ channelmap = 0x03;
+ break;
+
+ case 3:
+ if (FC == 1)
+ channelmap = 0x02;
+ else if (LFE == 1)
+ channelmap = 0x01;
+ break;
+
+ case 2:
+ channelmap = 0x00;
+ break;
+
+ default:
+ break;
+ }
+
+ return channelmap;
+}
+
+static inline void mtk_hdmi_hw_i2s_ch_swap(struct mtk_hdmi *hdmi,
+ unsigned char swapbit)
+{
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, swapbit << 20, 0x0F << 20);
+}
+
+static void mtk_hdmi_hbr_config(struct mtk_hdmi *hdmi, bool dsd_bypass)
+{
+ if (dsd_bypass) {
+ mtk_hdmi_mask(hdmi, AIP_CTRL, HBRA_ON,
+ SPDIF_EN | DSD_EN | HBRA_ON);
+ mtk_hdmi_mask(hdmi, AIP_CTRL, I2S_EN, I2S_EN);
+ } else {
+ mtk_hdmi_mask(hdmi, AIP_CTRL, SPDIF_EN,
+ SPDIF_EN | DSD_EN | HBRA_ON);
+ mtk_hdmi_mask(hdmi, AIP_CTRL, SPDIF_INTERNAL_MODULE,
+ SPDIF_INTERNAL_MODULE);
+ mtk_hdmi_mask(hdmi, AIP_CTRL, HBR_FROM_SPDIF, HBR_FROM_SPDIF);
+ mtk_hdmi_mask(hdmi, AIP_CTRL, CTS_CAL_N4, CTS_CAL_N4);
+ }
+}
+
+static inline void mtk_hdmi_hw_spdif_config(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, WR_1UI_UNLOCK, WR_1UI_LOCK);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, FS_UNOVERRIDE, FS_OVERRIDE_WRITE);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, WR_2UI_UNLOCK, WR_2UI_LOCK);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, 0x4 << MAX_1UI_WRITE_SHIFT,
+ MAX_1UI_WRITE);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, 0x9 << MAX_2UI_WRITE_SHIFT,
+ MAX_2UI_WRITE);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, 0x4 << AUD_ERR_THRESH_SHIFT,
+ AUD_ERR_THRESH);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, I2S2DSD_EN, I2S2DSD_EN);
+}
+
+static void mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi)
+{
+ unsigned char ChMapping;
+
+ mtk_hdmi_write(hdmi, TOP_AUD_MAP,
+ C_SD7 + C_SD6 + C_SD5 + C_SD4 + C_SD3 + C_SD2 + C_SD1 +
+ C_SD0);
+ mtk_hdmi_mask(hdmi, AIP_SPDIF_CTRL, 0, 0x0F << 20);
+ mtk_hdmi_mask(hdmi, AIP_CTRL, 0,
+ SPDIF_EN | DSD_EN | HBRA_ON | CTS_CAL_N4 |
+ HBR_FROM_SPDIF | SPDIF_INTERNAL_MODULE);
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, 0, DSD_MUTE_DATA | LAYOUT1);
+
+ if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) {
+ if (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DSD) {
+ mtk_hdmi_audio_dsd_config(
+ hdmi, hdmi->aud_param.codec_params.channels,
+ 0);
+ mtk_hdmi_hw_i2s_ch_mapping(
+ hdmi, hdmi->aud_param.codec_params.channels,
+ 1);
+ } else {
+ mtk_hdmi_i2s_data_fmt(hdmi,
+ hdmi->aud_param.aud_i2s_fmt);
+ mtk_hdmi_i2s_sck_edge(hdmi, SCK_EDGE_RISE);
+ mtk_hdmi_i2s_cbit_order(hdmi, CBIT_ORDER_SAME);
+ mtk_hdmi_i2s_vbit(hdmi, VBIT_PCM);
+ mtk_hdmi_i2s_data_direction(hdmi, DATA_DIR_MSB);
+ mtk_hdmi_hw_audio_type(hdmi, HDMI_AUD_INPUT_I2S);
+ ChMapping = mtk_hdmi_get_i2s_ch_mapping(
+ hdmi, hdmi->aud_param.aud_input_chan_type);
+ mtk_hdmi_hw_i2s_ch_mapping(
+ hdmi, hdmi->aud_param.codec_params.channels,
+ ChMapping);
+ mtk_hdmi_hw_i2s_ch_swap(hdmi, LFE_CC_SWAP);
+ }
+ } else {
+ if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF &&
+ (hdmi->aud_param.aud_codec ==
+ HDMI_AUDIO_CODING_TYPE_DTS_HD ||
+ hdmi->aud_param.aud_codec ==
+ HDMI_AUDIO_CODING_TYPE_MLP) &&
+ hdmi->aud_param.codec_params.sample_rate == 768000) {
+ mtk_hdmi_hbr_config(hdmi, false);
+ } else {
+ mtk_hdmi_hw_spdif_config(hdmi);
+ mtk_hdmi_hw_i2s_ch_mapping(hdmi, 2, 0);
+ }
+ }
+}
+
+static void mtk_hdmi_aud_set_sw_ncts(struct mtk_hdmi *hdmi,
+ struct drm_display_mode *display_mode)
+{
+ unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate;
+
+ mtk_hdmi_aud_on_off_hw_ncts(hdmi, false);
+
+ mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock);
+}
+
+static inline void mtk_hdmi_hw_audio_input_enable(struct mtk_hdmi *hdmi,
+ unsigned int enable)
+{
+ if (enable)
+ mtk_hdmi_mask(hdmi, AIP_CTRL, AUD_IN_EN, AUD_IN_EN);
+ else
+ mtk_hdmi_mask(hdmi, AIP_CTRL, 0x0 << AUD_IN_EN_SHIFT,
+ AUD_IN_EN);
+}
+
+static void mtk_hdmi_aip_ctrl_init(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_mask(hdmi, AIP_CTRL,
+ AUD_SEL_OWRT | NO_MCLK_CTSGEN_SEL | CTS_REQ_EN,
+ AUD_SEL_OWRT | NO_MCLK_CTSGEN_SEL | MCLK_EN | CTS_REQ_EN);
+ mtk_hdmi_mask(hdmi, AIP_TPI_CTRL, TPI_AUDIO_LOOKUP_DIS,
+ TPI_AUDIO_LOOKUP_EN);
+}
+
+static void mtk_hdmi_audio_reset(struct mtk_hdmi *hdmi, bool rst)
+{
+ if (rst)
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL,
+ RST4AUDIO | RST4AUDIO_FIFO | RST4AUDIO_ACR,
+ RST4AUDIO | RST4AUDIO_FIFO | RST4AUDIO_ACR);
+ else
+ mtk_hdmi_mask(hdmi, AIP_TXCTRL, 0,
+ RST4AUDIO | RST4AUDIO_FIFO | RST4AUDIO_ACR);
+}
+
+static void mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
+ struct drm_display_mode *display_mode)
+{
+ mtk_hdmi_hw_aud_mute(hdmi);
+ mtk_hdmi_aud_enable_packet(hdmi, false);
+ mtk_hdmi_audio_reset(hdmi, true);
+ mtk_hdmi_aip_ctrl_init(hdmi);
+
+ mtk_hdmi_aud_set_input(hdmi);
+
+ mtk_hdmi_hw_aud_set_channel_status(
+ hdmi, hdmi->aud_param.codec_params.iec.status);
+
+ mtk_hdmi_setup_audio_infoframe(hdmi);
+
+ mtk_hdmi_hw_audio_input_enable(hdmi, true);
+
+ mtk_hdmi_audio_reset(hdmi, false);
+
+ mtk_hdmi_aud_set_sw_ncts(hdmi, display_mode);
+
+ usleep_range(25, 50);
+ mtk_hdmi_aud_on_off_hw_ncts(hdmi, true);
+
+ mtk_hdmi_aud_enable_packet(hdmi, true);
+ mtk_hdmi_hw_aud_unmute(hdmi);
+}
+
+void mtk_hdmi_output_init_mt8195(struct mtk_hdmi *hdmi)
+{
+ struct hdmi_audio_param *aud_param = &hdmi->aud_param;
+
+ aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+ aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+ aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
+ aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
+ aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
+ aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+
+ hdmi->hpd = HDMI_PLUG_OUT;
+ hdmi->set_csp_depth = RGB444_8bit;
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_8_BIT;
+ hdmi->colorimtery = HDMI_COLORIMETRY_NONE;
+ hdmi->extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_RESERVED;
+ hdmi->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+ hdmi->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
+}
+
+static void mtk_hdmi_reset_colorspace_setting(struct mtk_hdmi *hdmi)
+{
+ hdmi->set_csp_depth = RGB444_8bit;
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_8_BIT;
+ hdmi->colorimtery = HDMI_COLORIMETRY_NONE;
+ hdmi->extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_RESERVED;
+ hdmi->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+ hdmi->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
+}
+
+static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_aud_enable_packet(hdmi, true);
+ hdmi->audio_enable = true;
+}
+
+static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_aud_enable_packet(hdmi, false);
+ hdmi->audio_enable = false;
+}
+
+static void mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi,
+ struct hdmi_audio_param *param)
+{
+ if (!hdmi->audio_enable)
+ return;
+
+ memcpy(&hdmi->aud_param, param, sizeof(*param));
+ mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
+}
+
+static void mtk_hdmi_change_video_resolution(struct mtk_hdmi *hdmi)
+{
+ bool is_over_340M = false;
+ bool is_hdmi_sink = false;
+
+ mtk_hdmi_hw_reset(hdmi);
+ mtk_hdmi_set_sw_hpd(hdmi, true);
+ usleep_range(2, 5);
+
+ mtk_hdmi_write(hdmi, HDCP_TOP_CTRL, 0x0);
+ mtk_hdmi_en_hdcp_reauth_int(hdmi, true);
+ mtk_hdmi_enable_hpd_pord_irq(hdmi, true);
+ mtk_hdmi_force_hdcp_hpd(hdmi);
+
+ is_hdmi_sink = mtk_hdmi_sink_is_hdmi_device(hdmi);
+ mtk_hdmi_set_deep_color(hdmi, is_hdmi_sink);
+ mtk_hdmi_enable_hdmi_mode(hdmi, is_hdmi_sink);
+
+ usleep_range(5, 10);
+ mtk_hdmi_hw_vid_black(hdmi, true);
+ mtk_hdmi_hw_aud_mute(hdmi);
+ mtk_hdmi_hw_send_av_unmute(hdmi);
+
+ mtk_hdmi_mask(hdmi, TOP_CFG01, NULL_PKT_VSYNC_HIGH_EN,
+ NULL_PKT_VSYNC_HIGH_EN | NULL_PKT_EN);
+
+ is_over_340M = mtk_hdmi_tmds_over_340M(hdmi);
+ mtk_hdmi_enable_scrambling(hdmi, is_over_340M);
+
+ if (hdmi->csp == HDMI_COLORSPACE_YUV420)
+ mtk_hdmi_yuv420_downsample(hdmi, true);
+ else
+ mtk_hdmi_yuv420_downsample(hdmi, false);
+}
+
+static void mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi,
+ struct drm_display_mode *mode)
+{
+ mtk_hdmi_change_video_resolution(hdmi);
+ mtk_hdmi_aud_output_config(hdmi, mode);
+}
+
+static void mtk_hdmi_clk_enable(struct mtk_hdmi *hdmi)
+{
+ int i;
+
+ clk_set_parent(hdmi->clk[MTK_MT8195_HDIM_HDCP_SEL],
+ hdmi->clk[MTK_MT8195_HDMI_UNIVPLL_D4D8]);
+
+ for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names_mt8195); i++) {
+ if (i == MTK_MT8195_HDMI_UNIVPLL_D4D8 ||
+ i == MTK_MT8195_HDMI_CLK_UNIVPLL_D6D4 ||
+ i == MTK_MT8195_HDMI_CLK_MSDCPLL_D2 ||
+ i == MTK_MT8195_HDMI_CLK_HDMI_APB_SEL)
+ continue;
+ else
+ clk_prepare_enable(hdmi->clk[i]);
+ }
+}
+
+void mtk_hdmi_clk_disable_mt8195(struct mtk_hdmi *hdmi)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names_mt8195); i++) {
+ if (i == MTK_MT8195_HDMI_UNIVPLL_D4D8 ||
+ i == MTK_MT8195_HDMI_CLK_UNIVPLL_D6D4 ||
+ i == MTK_MT8195_HDMI_CLK_MSDCPLL_D2 ||
+ i == MTK_MT8195_HDMI_CLK_HDMI_APB_SEL)
+ continue;
+ else
+ clk_disable_unprepare(hdmi->clk[i]);
+ }
+}
+
+static void mtk_hdmi_hpd_event(enum hdmi_hpd_state hpd, struct device *dev)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev)
+ drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev);
+}
+
+static enum hdmi_hpd_state mtk_hdmi_hpd_pord_status(struct mtk_hdmi *hdmi)
+{
+ unsigned int hpd_status;
+
+ hpd_status = mtk_hdmi_read(hdmi, HPD_DDC_STATUS);
+ if ((hpd_status & (HPD_PIN_STA | PORD_PIN_STA)) ==
+ (HPD_PIN_STA | PORD_PIN_STA))
+ return HDMI_PLUG_IN_AND_SINK_POWER_ON;
+ else if ((hpd_status & (HPD_PIN_STA | PORD_PIN_STA)) == PORD_PIN_STA)
+ return HDMI_PLUG_IN_ONLY;
+ else
+ return HDMI_PLUG_OUT;
+}
+
+static irqreturn_t mtk_hdmi_isr(int irq, void *arg)
+{
+ struct mtk_hdmi *hdmi = arg;
+ unsigned int int_status;
+ int ret = IRQ_HANDLED;
+
+ int_status = mtk_hdmi_read(hdmi, TOP_INT_STA00);
+
+ /* handle hpd interrupt */
+ if (int_status & (PORD_F_INT_STA | PORD_R_INT_STA | HTPLG_F_INT_STA |
+ HTPLG_R_INT_STA)) {
+ mtk_hdmi_enable_hpd_pord_irq(hdmi, false);
+ mtk_hdmi_clr_htplg_pord_irq(hdmi);
+ ret = IRQ_WAKE_THREAD;
+ }
+
+ /*clear all tx irq*/
+ mtk_hdmi_clr_all_int_status(hdmi);
+
+ return ret;
+}
+
+static irqreturn_t mtk_hdmi_hpd_work_handle(int irq, void *arg)
+{
+ struct mtk_hdmi *hdmi = arg;
+ enum hdmi_hpd_state hpd;
+
+ hpd = mtk_hdmi_hpd_pord_status(hdmi);
+ if (hpd != hdmi->hpd) {
+ hdmi->hpd = hpd;
+ mtk_hdmi_hpd_event(hpd, hdmi->dev);
+ }
+
+ mtk_hdmi_enable_hpd_pord_irq(hdmi, true);
+ return IRQ_HANDLED;
+}
+
+static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn,
+ bool force)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+
+ if (hdmi->hpd != HDMI_PLUG_IN_AND_SINK_POWER_ON &&
+ hdmi->hpd != HDMI_PLUG_IN_ONLY) {
+ hdmi->support_csp_depth = RGB444_8bit;
+ hdmi->set_csp_depth = RGB444_8bit;
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_8_BIT;
+ hdmi->colorimtery = HDMI_COLORIMETRY_NONE;
+ hdmi->extended_colorimetry = HDMI_EXTENDED_COLORIMETRY_RESERVED;
+ hdmi->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+ hdmi->ycc_quantization_range =
+ HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
+ }
+
+ return (hdmi->hpd != HDMI_PLUG_OUT) ? connector_status_connected :
+ connector_status_disconnected;
+}
+
+static void hdmi_conn_destroy(struct drm_connector *conn)
+{
+ drm_connector_cleanup(conn);
+}
+
+static int hdmi_conn_atomic_set_property(struct drm_connector *conn,
+ struct drm_connector_state *state,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+ int ret = 0;
+
+ spin_lock(&hdmi->property_lock);
+
+ if (property == hdmi->csp_depth_prop) {
+ if (val & hdmi->support_csp_depth)
+ hdmi->set_csp_depth = val;
+ else
+ ret = -EINVAL;
+ } else {
+ ret = -EINVAL;
+ }
+
+ spin_unlock(&hdmi->property_lock);
+ return ret;
+}
+
+static int
+hdmi_conn_atomic_get_property(struct drm_connector *conn,
+ const struct drm_connector_state *state,
+ struct drm_property *property, uint64_t *val)
+{
+ int ret = -EINVAL;
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+
+ spin_lock(&hdmi->property_lock);
+
+ if (property == hdmi->csp_depth_prop) {
+ *val = hdmi->support_csp_depth;
+ ret = 0;
+ }
+
+ spin_unlock(&hdmi->property_lock);
+ return ret;
+}
+
+static int mtk_hdmi_enable_disable(struct mtk_hdmi *hdmi, bool enable)
+{
+ int ret;
+
+ if (enable && !hdmi->hdmi_enabled) {
+ if (!hdmi->power_clk_enabled) {
+ /* power domain on */
+ ret = pm_runtime_get_sync(hdmi->dev);
+
+ /* clk on */
+ mtk_hdmi_clk_enable(hdmi);
+ hdmi->power_clk_enabled = true;
+ }
+
+ if (!hdmi->irq_registered) {
+ /* disable all tx interrupts */
+ mtk_hdmi_disable_all_int(hdmi);
+ /* request irq */
+ hdmi->hdmi_irq =
+ irq_of_parse_and_map(hdmi->dev->of_node, 0);
+ ret = request_threaded_irq(hdmi->hdmi_irq, mtk_hdmi_isr,
+ mtk_hdmi_hpd_work_handle,
+ IRQF_TRIGGER_HIGH, "hdmiirq",
+ hdmi);
+ hdmi->irq_registered = true;
+ /* enable hpd interrupt */
+ mtk_hdmi_set_sw_hpd(hdmi, true);
+ mtk_hdmi_enable_hpd_pord_irq(hdmi, true);
+ }
+
+ } else if (!enable && hdmi->hdmi_enabled) {
+ if (hdmi->irq_registered) {
+ /* free irq */
+ free_irq(hdmi->hdmi_irq, NULL);
+ hdmi->irq_registered = false;
+ }
+
+ if (hdmi->power_clk_enabled) {
+ /* clk disable */
+ mtk_hdmi_clk_disable_mt8195(hdmi);
+ /* power domain off */
+ ret = pm_runtime_put_sync(hdmi->dev);
+ hdmi->power_clk_enabled = false;
+ }
+ }
+
+ hdmi->hdmi_enabled = enable;
+
+ return 0;
+}
+
+static const struct drm_prop_enum_list csp_depth_props[] = {
+ { __builtin_ffs(RGB444_8bit), "RGB444_8bit" },
+ { __builtin_ffs(RGB444_10bit), "RGB444_10bit" },
+ { __builtin_ffs(RGB444_12bit), "RGB444_10bit" },
+ { __builtin_ffs(RGB444_16bit), "RGB444_16bit" },
+ { __builtin_ffs(YCBCR444_8bit), "YCBCR444_8bit" },
+ { __builtin_ffs(YCBCR444_10bit), "YCBCR444_10bit" },
+ { __builtin_ffs(YCBCR444_12bit), "YCBCR444_12bit" },
+ { __builtin_ffs(YCBCR444_16bit), "YCBCR444_16bit" },
+ { __builtin_ffs(YCBCR422_8bit_NO_SUPPORT), "YCBCR422_8bit_NO_SUPPORT" },
+ { __builtin_ffs(YCBCR422_10bit_NO_SUPPORT),
+ "YCBCR422_10bit_NO_SUPPORT" },
+ { __builtin_ffs(YCBCR422_12bit), "YCBCR422_12bit" },
+ { __builtin_ffs(YCBCR422_16bit_NO_SUPPORT),
+ "YCBCR422_16bit_NO_SUPPORT" },
+ { __builtin_ffs(YCBCR420_8bit), "YCBCR420_8bit" },
+ { __builtin_ffs(YCBCR420_10bit), "YCBCR420_10bit" },
+ { __builtin_ffs(YCBCR420_12bit), "YCBCR420_12bit" },
+ { __builtin_ffs(YCBCR420_16bit), "YCBCR420_16bit" },
+};
+
+static void mtk_hdmi_connetor_init_property(struct drm_device *drm_dev,
+ struct drm_connector *conn)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+ struct drm_property *prop;
+ /* ycbcr422 cannot support 8,10,16bit */
+ unsigned int supported_csp_depth_mask =
+ RGB444_8bit | RGB444_10bit | RGB444_12bit | RGB444_16bit |
+ YCBCR444_8bit | YCBCR444_10bit | YCBCR444_12bit |
+ YCBCR444_16bit | YCBCR422_12bit | YCBCR420_8bit |
+ YCBCR420_10bit | YCBCR420_12bit | YCBCR420_16bit;
+
+ spin_lock_init(&hdmi->property_lock);
+
+ /* create colorspace_depth bitmask property */
+ prop = drm_property_create_bitmask(
+ conn->dev, 0, "hdmi_colorspace_depth", csp_depth_props,
+ ARRAY_SIZE(csp_depth_props), supported_csp_depth_mask);
+
+ if (!prop)
+ return;
+
+ hdmi->csp_depth_prop = prop;
+ drm_object_attach_property(&conn->base, prop, 0);
+
+ /* create mtk_hdmi_blob property, include EDID parser info,
+ * such as max_tmds_clock_rate, max_tmds_character_rate, support dolby vision
+ */
+ prop = drm_property_create(conn->dev,
+ DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE,
+ "HDMI_INFO", 0);
+ if (!prop)
+ return;
+
+ drm_object_attach_property(&conn->base, prop, 0);
+}
+
+static void mtk_hdmi_convert_colorspace_depth(struct mtk_hdmi *hdmi)
+{
+ switch (hdmi->set_csp_depth) {
+ case RGB444_8bit:
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_8_BIT;
+ break;
+ case RGB444_10bit:
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_10_BIT;
+ break;
+ case RGB444_12bit:
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_12_BIT;
+ break;
+ case RGB444_16bit:
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_16_BIT;
+ break;
+ case YCBCR444_8bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV444;
+ hdmi->color_depth = HDMI_8_BIT;
+ break;
+ case YCBCR444_10bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV444;
+ hdmi->color_depth = HDMI_10_BIT;
+ break;
+ case YCBCR444_12bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV444;
+ hdmi->color_depth = HDMI_12_BIT;
+ break;
+ case YCBCR444_16bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV444;
+ hdmi->color_depth = HDMI_16_BIT;
+ break;
+ case YCBCR422_12bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV422;
+ hdmi->color_depth = HDMI_12_BIT;
+ break;
+ case YCBCR420_8bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV420;
+ hdmi->color_depth = HDMI_8_BIT;
+ break;
+ case YCBCR420_10bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV420;
+ hdmi->color_depth = HDMI_10_BIT;
+ break;
+ case YCBCR420_12bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV420;
+ hdmi->color_depth = HDMI_12_BIT;
+ break;
+ case YCBCR420_16bit:
+ hdmi->csp = HDMI_COLORSPACE_YUV420;
+ hdmi->color_depth = HDMI_16_BIT;
+ break;
+ default:
+
+ hdmi->csp = HDMI_COLORSPACE_RGB;
+ hdmi->color_depth = HDMI_8_BIT;
+ }
+}
+
+static int mtk_hdmi_conn_get_modes(struct drm_connector *conn)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+ struct edid *edid;
+ int ret;
+
+ if (!hdmi->ddc_adpt)
+ return -ENODEV;
+
+ edid = drm_get_edid(conn, hdmi->ddc_adpt);
+ if (!edid)
+ return -ENODEV;
+
+ hdmi->dvi_mode = !drm_detect_hdmi_monitor(edid);
+
+ drm_connector_update_edid_property(conn, edid);
+
+ ret = drm_add_edid_modes(conn, edid);
+
+ kfree(edid);
+
+ return ret;
+}
+
+static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn,
+ struct drm_display_mode *mode)
+{
+ if (mode->clock < 27000)
+ return MODE_CLOCK_LOW;
+ if (mode->clock > 594000)
+ return MODE_CLOCK_HIGH;
+
+ return drm_mode_validate_size(mode, 0x1fff, 0x1fff);
+}
+
+static struct drm_encoder *mtk_hdmi_conn_best_enc(struct drm_connector *conn)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
+
+ return hdmi->bridge.encoder;
+}
+
+static const struct drm_connector_funcs mtk_hdmi_connector_funcs = {
+ .detect = hdmi_conn_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = hdmi_conn_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+ .atomic_set_property = hdmi_conn_atomic_set_property,
+ .atomic_get_property = hdmi_conn_atomic_get_property,
+};
+
+static const struct drm_connector_helper_funcs mtk_hdmi_connector_helper_funcs = {
+ .get_modes = mtk_hdmi_conn_get_modes,
+ .mode_valid = mtk_hdmi_conn_mode_valid,
+ .best_encoder = mtk_hdmi_conn_best_enc,
+};
+
+/*
+ * Bridge callbacks
+ */
+
+static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+ int ret;
+
+ ret = drm_connector_init(bridge->encoder->dev, &hdmi->conn,
+ &mtk_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA);
+ if (ret)
+ return ret;
+
+ drm_connector_helper_add(&hdmi->conn, &mtk_hdmi_connector_helper_funcs);
+
+ hdmi->conn.polled = DRM_CONNECTOR_POLL_HPD;
+ hdmi->conn.interlace_allowed = false;
+ hdmi->conn.doublescan_allowed = false;
+ hdmi->conn.ycbcr_420_allowed = true;
+
+ ret = drm_connector_attach_encoder(&hdmi->conn, bridge->encoder);
+ if (ret)
+ return ret;
+
+ mtk_hdmi_connetor_init_property(bridge->dev, &hdmi->conn);
+
+ pm_runtime_enable(hdmi->dev);
+ mtk_hdmi_enable_disable(hdmi, true);
+
+ return 0;
+}
+
+static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+ if (!hdmi->enabled)
+ return;
+
+ mtk_hdmi_hw_send_av_mute(hdmi);
+ usleep_range(50000, 50050);
+ mtk_hdmi_hw_vid_black(hdmi, true);
+ mtk_hdmi_hw_aud_mute(hdmi);
+ mtk_hdmi_disable_hdcp_encrypt(hdmi);
+ usleep_range(50000, 50050);
+
+ hdmi->enabled = false;
+}
+
+static void mtk_hdmi_handle_plugged_change(struct mtk_hdmi *hdmi, bool plugged)
+{
+ if (hdmi->plugged_cb && hdmi->codec_dev)
+ hdmi->plugged_cb(hdmi->codec_dev, plugged);
+}
+
+static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+ if (!hdmi->powered)
+ return;
+
+ phy_power_off(hdmi->phy);
+
+ hdmi->powered = false;
+
+ mtk_hdmi_reset_colorspace_setting(hdmi);
+
+ /* signal the disconnect event to audio codec */
+ mtk_hdmi_handle_plugged_change(hdmi, false);
+}
+
+static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+ u8 buffer_spd[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE];
+ u8 buffer_avi[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
+ union phy_configure_opts opts = {
+ .dp = { .link_rate = hdmi->mode.clock * 1000 }
+ };
+
+ mtk_hdmi_convert_colorspace_depth(hdmi);
+ mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode);
+ phy_configure(hdmi->phy, &opts);
+ phy_power_on(hdmi->phy);
+ mtk_hdmi_send_infoframe(hdmi, buffer_spd, sizeof(buffer_spd), buffer_avi, sizeof(buffer_avi), &hdmi->mode);
+ mtk_hdmi_hw_spd_infoframe(hdmi, buffer_spd, sizeof(buffer_avi));
+ mtk_hdmi_hw_avi_infoframe(hdmi, buffer_avi, sizeof(buffer_spd));
+
+ hdmi->powered = true;
+}
+
+static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge)
+{
+ struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
+
+ phy_power_on(hdmi->phy);
+ mtk_hdmi_hw_vid_black(hdmi, false);
+ mtk_hdmi_hw_aud_unmute(hdmi);
+
+ /* signal the connect event to audio codec */
+ mtk_hdmi_handle_plugged_change(hdmi, true);
+
+ hdmi->enabled = true;
+}
+
+const struct drm_bridge_funcs mtk_mt8195_hdmi_bridge_funcs = {
+ .attach = mtk_hdmi_bridge_attach,
+ .mode_fixup = mtk_hdmi_bridge_mode_fixup,
+ .disable = mtk_hdmi_bridge_disable,
+ .post_disable = mtk_hdmi_bridge_post_disable,
+ .mode_set = mtk_hdmi_bridge_mode_set,
+ .pre_enable = mtk_hdmi_bridge_pre_enable,
+ .enable = mtk_hdmi_bridge_enable,
+ .get_edid = mtk_hdmi_bridge_get_edid,
+};
+
+static void mtk_hdmi_set_plugged_cb(struct mtk_hdmi *hdmi,
+ hdmi_codec_plugged_cb fn,
+ struct device *codec_dev)
+{
+ bool plugged;
+
+ hdmi->plugged_cb = fn;
+ hdmi->codec_dev = codec_dev;
+ plugged = (hdmi->hpd == HDMI_PLUG_IN_AND_SINK_POWER_ON) ? true : false;
+ mtk_hdmi_handle_plugged_change(hdmi, plugged);
+}
+
+/*
+ * HDMI audio codec callbacks
+ */
+static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
+ hdmi_codec_plugged_cb fn,
+ struct device *codec_dev)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ if (!hdmi)
+ return -ENODEV;
+
+ mtk_hdmi_set_plugged_cb(hdmi, fn, codec_dev);
+ return 0;
+}
+
+static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+ struct hdmi_audio_param hdmi_params;
+ unsigned int chan = params->cea.channels;
+
+ if (!hdmi->bridge.encoder)
+ return -ENODEV;
+
+ switch (chan) {
+ case 2:
+ hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
+ break;
+ case 4:
+ hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
+ break;
+ case 6:
+ hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
+ break;
+ case 8:
+ hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (params->sample_rate) {
+ case 32000:
+ case 44100:
+ case 48000:
+ case 88200:
+ case 96000:
+ case 176400:
+ case 192000:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (daifmt->fmt) {
+ case HDMI_I2S:
+ hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
+ hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
+ hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S;
+ hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
+ hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ memcpy(&hdmi_params.codec_params, params,
+ sizeof(hdmi_params.codec_params));
+
+ mtk_hdmi_audio_set_param(hdmi, &hdmi_params);
+
+ return 0;
+}
+
+static int mtk_hdmi_audio_startup(struct device *dev, void *data)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ mtk_hdmi_audio_enable(hdmi);
+
+ return 0;
+}
+
+static void mtk_hdmi_audio_shutdown(struct device *dev, void *data)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ mtk_hdmi_audio_disable(hdmi);
+}
+
+static int mtk_hdmi_audio_mute(struct device *dev, void *data, bool enable,
+ int direction)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ if (direction != SNDRV_PCM_STREAM_PLAYBACK)
+ return 0;
+
+ if (enable)
+ mtk_hdmi_hw_aud_mute(hdmi);
+ else
+ mtk_hdmi_hw_aud_unmute(hdmi);
+
+ return 0;
+}
+
+static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf,
+ size_t len)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ if (hdmi->enabled)
+ memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len));
+ else
+ memset(buf, 0, len);
+ return 0;
+}
+
+static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
+ .hw_params = mtk_hdmi_audio_hw_params,
+ .audio_startup = mtk_hdmi_audio_startup,
+ .audio_shutdown = mtk_hdmi_audio_shutdown,
+ .mute_stream = mtk_hdmi_audio_mute,
+ .get_eld = mtk_hdmi_audio_get_eld,
+ .hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb,
+};
+
+void set_hdmi_codec_pdata_mt8195(struct hdmi_codec_pdata *codec_data) {
+ codec_data->ops = &mtk_hdmi_audio_codec_ops;
+ codec_data->max_i2s_channels = 2;
+ codec_data->i2s = 1;
+}
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
new file mode 100644
index 000000000000..2e6b9b2f9816
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2021 BayLibre, SAS
+ */
+
+#ifndef _MTK_HDMI_MT8195_CTRL_H
+#define _MTK_HDMI_MT8195_CTRL_H
+
+#include <linux/hdmi.h>
+#include <drm/drm_bridge.h>
+
+extern struct platform_driver mtk_hdmi_mt8195_ddc_driver;
+
+/* struct mtk_hdmi_info is used to propagate blob property to userspace */
+struct mtk_hdmi_info {
+ unsigned short edid_sink_colorimetry;
+ unsigned char edid_sink_rgb_color_bit;
+ unsigned char edid_sink_ycbcr_color_bit;
+ unsigned char ui1_sink_dc420_color_bit;
+ unsigned short edid_sink_max_tmds_clock;
+ unsigned short edid_sink_max_tmds_character_rate;
+ unsigned char edid_sink_support_dynamic_hdr;
+};
+
+#endif /* _MTK_HDMI_MT8195_CTRL_H */
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.c b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.c
new file mode 100644
index 000000000000..c7213468e1a8
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.c
@@ -0,0 +1,530 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2021 BayLibre, SAS
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/semaphore.h>
+
+#include "mtk_mt8195_hdmi_ddc.h"
+#include "mtk_mt8195_hdmi_regs.h"
+#include "mtk_mt8195_hdmi.h"
+
+#define EDID_ID 0x50
+#define DDC2_CLOK 572 /* BIM=208M/(v*4) = 90Khz */
+#define DDC2_CLOK_EDID 832 /* BIM=208M/(v*4) = 62.5Khz */
+
+enum sif_bit_t_hdmi {
+ SIF_8_BIT_HDMI, /* /< [8 bits data address.] */
+ SIF_16_BIT_HDMI, /* /< [16 bits data address.] */
+};
+
+static inline bool mtk_ddc_readbit(struct mtk_hdmi_ddc *ddc, unsigned short reg,
+ unsigned int offset)
+{
+ return (readl(ddc->regs + reg) & offset) ? true : false;
+}
+
+static inline unsigned int mtk_ddc_read(struct mtk_hdmi_ddc *ddc,
+ unsigned short reg)
+{
+ return readl(ddc->regs + reg);
+}
+
+static inline void mtk_ddc_write(struct mtk_hdmi_ddc *ddc, unsigned short reg,
+ unsigned int val)
+{
+ writel(val, ddc->regs + reg);
+}
+
+static inline void mtk_ddc_mask(struct mtk_hdmi_ddc *ddc, unsigned int reg,
+ unsigned int val, unsigned int mask)
+{
+ unsigned int tmp;
+
+ tmp = readl(ddc->regs + reg) & ~mask;
+ tmp |= (val & mask);
+ writel(tmp, ddc->regs + reg);
+}
+
+static void hdmi_ddc_request(struct mtk_hdmi_ddc *ddc)
+{
+ mtk_ddc_mask(ddc, HDCP2X_POL_CTRL, HDCP2X_DIS_POLL_EN,
+ HDCP2X_DIS_POLL_EN);
+}
+
+static void DDC_WR_ONE(struct mtk_hdmi_ddc *ddc, unsigned int addr_id,
+ unsigned int offset_id, unsigned char wr_data)
+{
+ if (mtk_ddc_read(ddc, HDCP2X_DDCM_STATUS) & DDC_I2C_BUS_LOW) {
+ mtk_ddc_mask(ddc, DDC_CTRL, (CLOCK_SCL << DDC_CMD_SHIFT),
+ DDC_CMD);
+ usleep_range(250, 300);
+ }
+ mtk_ddc_mask(ddc, HPD_DDC_CTRL, DDC2_CLOK << DDC_DELAY_CNT_SHIFT,
+ DDC_DELAY_CNT);
+ mtk_ddc_write(ddc, SI2C_CTRL, SI2C_ADDR_READ << SI2C_ADDR_SHIFT);
+ mtk_ddc_mask(ddc, SI2C_CTRL, wr_data << SI2C_WDATA_SHIFT, SI2C_WDATA);
+ mtk_ddc_mask(ddc, SI2C_CTRL, SI2C_WR, SI2C_WR);
+
+ mtk_ddc_write(ddc, DDC_CTRL,
+ (SEQ_WRITE_REQ_ACK << DDC_CMD_SHIFT) +
+ (1 << DDC_DIN_CNT_SHIFT) +
+ (offset_id << DDC_OFFSET_SHIFT) + (addr_id << 1));
+
+ usleep_range(1000, 1250);
+
+ if ((mtk_ddc_read(ddc, HDCP2X_DDCM_STATUS) &
+ (DDC_I2C_NO_ACK | DDC_I2C_BUS_LOW))) {
+ if (mtk_ddc_read(ddc, HDCP2X_DDCM_STATUS) & DDC_I2C_BUS_LOW) {
+ mtk_ddc_mask(ddc, DDC_CTRL,
+ (CLOCK_SCL << DDC_CMD_SHIFT), DDC_CMD);
+ usleep_range(250, 300);
+ }
+ }
+}
+
+static unsigned char
+ddcm_read_hdmi(struct mtk_hdmi_ddc *ddc,
+ unsigned int u4_clk_div, unsigned char uc_dev, unsigned int u4_addr,
+ enum sif_bit_t_hdmi uc_addr_type, unsigned char *puc_value,
+ unsigned int u4_count)
+{
+ unsigned int i, temp_length, loop_counter, temp_ksvlist, device_n;
+ unsigned int uc_read_count, uc_idx;
+ unsigned long ddc_start_time, ddc_end_time, ddc_timeout;
+
+ if (!puc_value || !u4_count || !u4_clk_div)
+ return 0;
+
+ uc_idx = 0;
+ if (mtk_ddc_read(ddc, HDCP2X_DDCM_STATUS) & DDC_I2C_BUS_LOW) {
+ mtk_ddc_mask(ddc, DDC_CTRL, (CLOCK_SCL << DDC_CMD_SHIFT),
+ DDC_CMD);
+ usleep_range(250, 300);
+ }
+
+ mtk_ddc_mask(ddc, DDC_CTRL, (CLEAR_FIFO << DDC_CMD_SHIFT), DDC_CMD);
+
+ if (u4_addr == 0x43) {
+ mtk_ddc_write(ddc, DDC_CTRL,
+ (SEQ_READ_NO_ACK << DDC_CMD_SHIFT) +
+ (u4_count << DDC_DIN_CNT_SHIFT) +
+ (u4_addr << DDC_OFFSET_SHIFT) +
+ (uc_dev << 1));
+ usleep_range(700, 1000);
+
+ if (u4_count > 10)
+ temp_ksvlist = 10;
+ else
+ temp_ksvlist = u4_count;
+
+ for (uc_idx = 0; uc_idx < temp_ksvlist; uc_idx++) {
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_RD);
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_CONFIRM_READ);
+
+ puc_value[uc_idx] = (mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_DATA_OUT) >>
+ DDC_DATA_OUT_SHIFT;
+ usleep_range(100, 150);
+ }
+
+ if (u4_count == temp_ksvlist)
+ return (uc_idx + 1);
+
+ usleep_range(500, 600);
+
+ if (u4_count / 5 == 3)
+ device_n = 5;
+ else
+ device_n = 10;
+
+ for (uc_idx = 10; uc_idx < (10 + device_n); uc_idx++) {
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_RD);
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_CONFIRM_READ);
+
+ puc_value[uc_idx] = (mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_DATA_OUT) >>
+ DDC_DATA_OUT_SHIFT;
+ usleep_range(100, 150);
+ }
+
+ if (u4_count == (10 + device_n))
+ return (uc_idx + 1);
+
+ usleep_range(500, 700);
+
+ if (u4_count / 5 == 5)
+ device_n = 5;
+ else
+ device_n = 10;
+
+ for (uc_idx = 20; uc_idx < (20 + device_n); uc_idx++) {
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_RD);
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_CONFIRM_READ);
+
+ puc_value[uc_idx] = (mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_DATA_OUT) >>
+ DDC_DATA_OUT_SHIFT;
+ usleep_range(100, 150);
+ }
+
+ if (u4_count == (20 + device_n))
+ return (uc_idx + 1);
+
+ usleep_range(500, 700);
+
+ if (u4_count / 5 == 7)
+ device_n = 5;
+ else
+ device_n = 10;
+
+ for (uc_idx = 30; uc_idx < (30 + device_n); uc_idx++) {
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_RD);
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_CONFIRM_READ);
+
+ puc_value[uc_idx] = (mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_DATA_OUT) >>
+ DDC_DATA_OUT_SHIFT;
+ usleep_range(100, 150);
+ }
+
+ if (u4_count == (30 + device_n))
+ return (uc_idx + 1);
+
+ usleep_range(500, 700);
+
+ for (uc_idx = 40; uc_idx < (40 + 5); uc_idx++) {
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_RD);
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ << SI2C_ADDR_SHIFT) +
+ SI2C_CONFIRM_READ);
+
+ puc_value[uc_idx] = (mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_DATA_OUT) >>
+ DDC_DATA_OUT_SHIFT;
+ usleep_range(100, 150);
+ }
+
+ if (u4_count == 45)
+ return (uc_idx + 1);
+ } else {
+ if (u4_count >= 16) {
+ temp_length = 16;
+ loop_counter =
+ u4_count / 16 + ((u4_count % 16 == 0) ? 0 : 1);
+ } else {
+ temp_length = u4_count;
+ loop_counter = 1;
+ }
+ if (uc_dev >= EDID_ID) {
+ if (u4_clk_div < DDC2_CLOK_EDID)
+ u4_clk_div = DDC2_CLOK_EDID;
+ }
+ mtk_ddc_mask(ddc, HPD_DDC_CTRL, u4_clk_div << DDC_DELAY_CNT_SHIFT,
+ DDC_DELAY_CNT);
+ for (i = 0; i < loop_counter; i++) {
+ if (i == (loop_counter - 1) && i != 0 &&
+ u4_count % 16)
+ temp_length = u4_count % 16;
+
+ if (uc_dev > EDID_ID) {
+ mtk_ddc_mask(ddc, SCDC_CTRL,
+ (uc_dev - EDID_ID)
+ << DDC_SEGMENT_SHIFT,
+ DDC_SEGMENT);
+ mtk_ddc_write(
+ ddc, DDC_CTRL,
+ (ENH_READ_NO_ACK << DDC_CMD_SHIFT) +
+ (temp_length
+ << DDC_DIN_CNT_SHIFT) +
+ ((u4_addr + i * temp_length)
+ << DDC_OFFSET_SHIFT) +
+ (EDID_ID << 1));
+ } else {
+ mtk_ddc_write(
+ ddc, DDC_CTRL,
+ (SEQ_READ_NO_ACK << DDC_CMD_SHIFT) +
+ (temp_length
+ << DDC_DIN_CNT_SHIFT) +
+ ((u4_addr + ((u4_addr == 0x43) ?
+ 0 :
+ (i * 16)))
+ << DDC_OFFSET_SHIFT) +
+ (uc_dev << 1));
+ }
+ usleep_range(5000, 5500);
+ ddc_start_time = jiffies;
+ ddc_timeout = temp_length + 5;
+ ddc_end_time = ddc_start_time + ddc_timeout * HZ / 1000;
+ while (1) {
+ if ((mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_I2C_IN_PROG) == 0)
+ break;
+
+ if (time_after(jiffies, ddc_end_time)) {
+ pr_info("[HDMI][DDC] error: time out\n");
+ return 0;
+ }
+ usleep_range(1000, 1500);
+ }
+ if ((mtk_ddc_read(ddc, HDCP2X_DDCM_STATUS) &
+ (DDC_I2C_NO_ACK | DDC_I2C_BUS_LOW))) {
+ if (mtk_ddc_read(ddc, HDCP2X_DDCM_STATUS) &
+ DDC_I2C_BUS_LOW) {
+ mtk_ddc_mask(ddc, DDC_CTRL,
+ (CLOCK_SCL
+ << DDC_CMD_SHIFT),
+ DDC_CMD);
+ usleep_range(250, 300);
+ }
+ return 0;
+ }
+ for (uc_idx = 0; uc_idx < temp_length; uc_idx++) {
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ
+ << SI2C_ADDR_SHIFT) +
+ SI2C_RD);
+ mtk_ddc_write(ddc, SI2C_CTRL,
+ (SI2C_ADDR_READ
+ << SI2C_ADDR_SHIFT) +
+ SI2C_CONFIRM_READ);
+
+ puc_value[i * 16 + uc_idx] =
+ (mtk_ddc_read(ddc, HPD_DDC_STATUS) &
+ DDC_DATA_OUT) >>
+ DDC_DATA_OUT_SHIFT;
+ /*
+ * when reading edid, if hdmi module been reset,
+ * ddc will fail and it's
+ *speed will be set to 400.
+ */
+ if (((mtk_ddc_read(ddc, HPD_DDC_CTRL) >> 16) &
+ 0xFFFF) < DDC2_CLOK)
+ return 0;
+
+ uc_read_count = i * 16 + uc_idx + 1;
+ }
+ }
+ return uc_read_count;
+ }
+ return 0;
+}
+
+static unsigned char vddc_read(struct mtk_hdmi_ddc *ddc, unsigned int u4_clk_div,
+ unsigned char uc_dev, unsigned int u4_addr,
+ enum sif_bit_t_hdmi uc_addr_type,
+ unsigned char *puc_value, unsigned int u4_count)
+{
+ unsigned int u4_read_count = 0;
+ unsigned char uc_return_value = 0;
+
+ if (!puc_value || !u4_count || !u4_clk_div ||
+ uc_addr_type > SIF_16_BIT_HDMI ||
+ (uc_addr_type == SIF_8_BIT_HDMI && u4_addr > 255) ||
+ (uc_addr_type == SIF_16_BIT_HDMI && u4_addr > 65535)) {
+ return 0;
+ }
+
+ if (uc_addr_type == SIF_8_BIT_HDMI)
+ u4_read_count = 255 - u4_addr + 1;
+ else if (uc_addr_type == SIF_16_BIT_HDMI)
+ u4_read_count = 65535 - u4_addr + 1;
+
+ u4_read_count = (u4_read_count > u4_count) ? u4_count : u4_read_count;
+ uc_return_value = ddcm_read_hdmi(ddc, u4_clk_div, uc_dev, u4_addr,
+ uc_addr_type, puc_value, u4_read_count);
+ return uc_return_value;
+}
+
+static unsigned char fg_ddc_data_read(struct mtk_hdmi_ddc *ddc,
+ unsigned char b_dev,
+ unsigned char b_data_addr,
+ unsigned char b_data_count,
+ unsigned char *pr_data)
+{
+ bool flag;
+
+ mutex_lock(&ddc->mtx);
+
+ hdmi_ddc_request(ddc);
+ if (vddc_read(ddc, DDC2_CLOK, (unsigned char)b_dev,
+ (unsigned int)b_data_addr, SIF_8_BIT_HDMI,
+ (unsigned char *)pr_data,
+ (unsigned int)b_data_count) == b_data_count) {
+ flag = true;
+ } else {
+ flag = false;
+ }
+
+ mutex_unlock(&ddc->mtx);
+ return flag;
+}
+
+static unsigned char fg_ddc_data_write(struct mtk_hdmi_ddc *ddc,
+ unsigned char b_dev,
+ unsigned char b_data_addr,
+ unsigned char b_data_count,
+ unsigned char *pr_data)
+{
+ unsigned int i;
+
+ mutex_lock(&ddc->mtx);
+
+ hdmi_ddc_request(ddc);
+ for (i = 0; i < b_data_count; i++)
+ DDC_WR_ONE(ddc, b_dev, b_data_addr + i, *(pr_data + i));
+
+ mutex_unlock(&ddc->mtx);
+ return 1;
+}
+
+static int mtk_hdmi_ddc_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
+ int num)
+{
+ struct mtk_hdmi_ddc *ddc = adapter->algo_data;
+ struct device *dev = adapter->dev.parent;
+ int ret;
+ int i;
+
+ if (!ddc)
+ return -EINVAL;
+
+ for (i = 0; i < num; i++) {
+ struct i2c_msg *msg = &msgs[i];
+
+ if (msg->flags & I2C_M_RD)
+ ret = fg_ddc_data_read(ddc, msg->addr, msg->buf[0],
+ (msg->len), &msg->buf[0]);
+ else
+ ret = fg_ddc_data_write(ddc, msg->addr, msg->buf[0],
+ (msg->len - 1), &msg->buf[1]);
+
+ if (ret <= 0)
+ goto xfer_end;
+ }
+
+ return i;
+
+xfer_end:
+ dev_err(dev, "ddc failed! : %d\n", ret);
+ return ret;
+}
+
+static u32 mtk_hdmi_ddc_func(struct i2c_adapter *adapter)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm mtk_hdmi_ddc_algorithm = {
+ .master_xfer = mtk_hdmi_ddc_xfer,
+ .functionality = mtk_hdmi_ddc_func,
+};
+
+static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_hdmi_ddc *ddc;
+ int ret;
+
+ ddc = devm_kzalloc(dev, sizeof(struct mtk_hdmi_ddc), GFP_KERNEL);
+ if (!ddc)
+ return -ENOMEM;
+
+ ddc->clk = devm_clk_get(dev, "ddc-i2c");
+ if (IS_ERR(ddc->clk)) {
+ dev_err(dev, "get ddc_clk failed: %p ,\n", ddc->clk);
+ return PTR_ERR(ddc->clk);
+ }
+ ret = clk_prepare_enable(ddc->clk);
+ if (ret) {
+ dev_err(dev, "enable ddc clk failed!\n");
+ return ret;
+ }
+
+ mutex_init(&ddc->mtx);
+
+ strscpy(ddc->adap.name, "mediatek-hdmi-ddc", sizeof(ddc->adap.name));
+ ddc->adap.owner = THIS_MODULE;
+ ddc->adap.class = I2C_CLASS_DDC;
+ ddc->adap.algo = &mtk_hdmi_ddc_algorithm;
+ ddc->adap.retries = 3;
+ ddc->adap.dev.of_node = dev->of_node;
+ ddc->adap.algo_data = ddc;
+ ddc->adap.dev.parent = &pdev->dev;
+
+ ret = i2c_add_adapter(&ddc->adap);
+ if (ret < 0) {
+ dev_err(dev, "failed to add bus to i2c core\n");
+ goto err_clk_disable;
+ }
+
+ platform_set_drvdata(pdev, ddc);
+ return 0;
+
+err_clk_disable:
+ clk_disable_unprepare(ddc->clk);
+ return ret;
+}
+
+static int mtk_hdmi_ddc_remove(struct platform_device *pdev)
+{
+ struct mtk_hdmi_ddc *ddc = platform_get_drvdata(pdev);
+
+ mutex_destroy(&ddc->mtx);
+ i2c_del_adapter(&ddc->adap);
+ clk_disable_unprepare(ddc->clk);
+
+ return 0;
+}
+
+static const struct of_device_id mtk_hdmi_ddc_match[] = {
+ {
+ .compatible = "mediatek,mt8195-hdmi-ddc",
+ },
+ {},
+};
+
+struct platform_driver mtk_hdmi_mt8195_ddc_driver = {
+ .probe = mtk_hdmi_ddc_probe,
+ .remove = mtk_hdmi_ddc_remove,
+ .driver = {
+ .name = "mediatek-hdmi-mt8195-ddc",
+ .of_match_table = mtk_hdmi_ddc_match,
+ },
+};
+
+MODULE_AUTHOR("Can Zeng <can.zeng@xxxxxxxxxxxx>");
+MODULE_DESCRIPTION("MediaTek HDMI DDC Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.h b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.h
new file mode 100644
index 000000000000..bf978a388b93
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_ddc.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ */
+
+#ifndef _MTK_DDC_MT8195_H
+#define _MTK_DDC_MT8195_H
+
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+
+struct mtk_hdmi_ddc {
+ struct mutex mtx;
+ struct i2c_adapter adap;
+ struct clk *clk;
+ void __iomem *regs;
+};
+
+#endif /* _MTK_DDC_MT8195_H */
diff --git a/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_regs.h b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_regs.h
new file mode 100644
index 000000000000..66fc388bc7a9
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mt8195_hdmi_regs.h
@@ -0,0 +1,329 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2021 BayLibre, SAS
+ */
+
+#ifndef _MTK_HDMI_REGS_H
+#define _MTK_HDMI_REGS_H
+
+#define AIF_HEADER GENMASK(19, 0)
+#define AIF_PKT00 GENMASK(31, 0)
+#define AIF_PKT01 (23, 0)
+#define AIF_PKT02 (31, 0)
+#define AIF_PKT03 (23, 0)
+
+#define AIP_CTRL BIT(10)
+#define AIP_CTS_SVAL 0x408
+#define AIP_DOWNSAMPLE_CTRL 0x41C
+#define AIP_I2S_CHST0 0x414
+#define AIP_I2S_CHST1 0x418
+#define AIP_I2S_CTRL 0x410
+#define AIP_N_VAL 0x404
+#define AIP_SPDIF_CTRL 0x40C
+#define AIP_TPI_CTRL 0x428
+#define AIP_TXCTRL 0x424
+
+#define AUD_DIS (0x0)
+#define AUD_DIS_WR (0x0)
+#define AUD_EN BIT(2)
+#define AUD_EN_WR BIT(18)
+#define AUD_ERR_THRESH GENMASK(29, 24)
+#define AUD_ERR_THRESH_SHIFT 24
+#define AUD_IN_EN BIT(8)
+#define AUD_IN_EN_SHIFT 8
+#define AUD_MUTE_DIS (0x0)
+#define AUD_MUTE_FIFO_EN BIT(5)
+#define AUD_PACKET_DROP BIT(6)
+#define AUD_RPT_DIS (0x0)
+#define AUD_RPT_EN BIT(2)
+#define AUD_SEL_OWRT BIT(9)
+
+#define AVI_DIS (0)
+#define AVI_DIS_WR (0)
+#define AVI_EN (0x1)
+#define AVI_EN_WR BIT(16)
+#define AVI_HEADER GENMASK(23, 0)
+#define AVI_PKT00 GENMASK(31, 0)
+#define AVI_PKT01 GENMASK(23, 0)
+#define AVI_PKT02 GENMASK(31, 0)
+#define AVI_PKT03 GENMASK(23, 0)
+#define AVI_PKT04 GENMASK(31, 0)
+#define AVI_PKT05 GENMASK(23, 0)
+#define AVI_RPT_DIS (0x0)
+#define AVI_RPT_EN (0x1)
+
+#define C422_C420_CONFIG_BYPASS BIT(5)
+#define C422_C420_CONFIG_ENABLE BIT(4)
+#define C422_C420_CONFIG_OUT_CB_OR_CR BIT(6)
+#define C444_C422_CONFIG_ENABLE (0x1)
+
+#define CBIT_ORDER_SAME BIT(13)
+
+#define CEA_AUD_EN BIT(9)
+#define CEA_AVI_EN BIT(11)
+#define CEA_CP_EN BIT(6)
+#define CEA_SPD_EN BIT(10)
+
+#define CLEAR_FIFO 0x9
+
+#define CLOCK_SCL 0xA
+
+#define CP_CLR_MUTE_EN BIT(1)
+#define CP_EN BIT(5)
+#define CP_EN_WR BIT(21)
+#define CP_RPT_EN BIT(5)
+#define CP_SET_MUTE_DIS (0)
+#define CP_SET_MUTE_EN (1)
+
+#define CTS_CAL_N4 BIT(23)
+#define CTS_REQ_EN BIT(1)
+#define CTS_SW_SEL (1)
+
+#define C_SD0 (0x0)
+#define C_SD1 BIT(4)
+#define C_SD2 BIT(9)
+#define C_SD3 GENMASK(14, 12)
+#define C_SD4 BIT(19)
+#define C_SD5 (0x5 << 20)
+#define C_SD6 GENMASK(26, 25)
+#define C_SD7 GENMASK(30, 28)
+
+#define DATA_DIR_LSB BIT(9)
+#define DATA_DIR_MSB (0)
+
+#define DDC_CMD GENMASK(31, 28)
+#define DDC_CMD_SHIFT (28)
+#define DDC_CTRL 0xC10
+#define DDC_DATA_OUT GENMASK(23, 16)
+#define DDC_DATA_OUT_CNT GENMASK(12, 8)
+#define DDC_DATA_OUT_SHIFT (16)
+#define DDC_DELAY_CNT GENMASK(31, 16)
+#define DDC_DELAY_CNT_SHIFT (16)
+#define DDC_DIN_CNT (25, 16)
+#define DDC_DIN_CNT_SHIFT (16)
+#define DDC_I2C_BUS_LOW BIT(11)
+#define DDC_I2C_IN_PROG BIT(13)
+#define DDC_I2C_IN_PROG_INT_CLR BIT(29)
+#define DDC_I2C_IN_PROG_INT_MASK (0)
+#define DDC_I2C_IN_PROG_INT_STA BIT(1)
+#define DDC_I2C_IN_PROG_INT_UNCLR (0)
+#define DDC_I2C_IN_PROG_INT_UNMASK BIT(29)
+#define DDC_I2C_NO_ACK BIT(10)
+#define DDC_OFFSET GENMASK(15, 8)
+#define DDC_OFFSET_SHIFT (8)
+#define DDC_SEGMENT GENMASK(15, 8)
+#define DDC_SEGMENT_SHIFT (8)
+
+#define DEEPCOLOR_MODE_10BIT BIT(8)
+#define DEEPCOLOR_MODE_12BIT GENMASK(9, 8)
+#define DEEPCOLOR_MODE_16BIT GENMASK(10, 8)
+#define DEEPCOLOR_MODE_8BIT (0)
+#define DEEPCOLOR_MODE_MASKBIT GENMASK(10, 8)
+#define DEEPCOLOR_PAT_EN BIT(12)
+#define DEEP_COLOR_ADD BIT(4)
+
+#define DOWNSAMPLE 0x2
+
+#define DSD_EN BIT(15)
+#define DSD_MUTE_DATA BIT(7)
+
+#define ENH_READ_NO_ACK 0x4
+
+#define FIFO0_MAP GENMASK(1, 0)
+#define FIFO1_MAP GENMASK(3, 2)
+#define FIFO2_MAP GENMASK(5, 4)
+#define FIFO3_MAP GENMASK(7, 6)
+
+#define FS_OVERRIDE_WRITE BIT(1)
+#define FS_UNOVERRIDE (0)
+
+#define HBRA_ON BIT(14)
+
+#define HBR_FROM_SPDIF BIT(20)
+
+#define HDCP1X_CTRL 0xCD0
+#define HDCP1X_ENC_EN BIT(6)
+#define HDCP1X_ENC_EN_SHIFT (6)
+#define HDCP2X_CTRL_0 0xC20
+#define HDCP2X_DDCM_STATUS 0xC68
+#define HDCP2X_DIS_POLL_EN BIT(16)
+#define HDCP2X_EN (0x1)
+#define HDCP2X_ENCRYPTING_ON BIT(10)
+#define HDCP2X_ENCRYPT_EN BIT(7)
+#define HDCP2X_ENCRYPT_EN_SHIFT (7)
+#define HDCP2X_HPD_OVR BIT(10)
+#define HDCP2X_HPD_SW BIT(11)
+#define HDCP2X_POL_CTRL 0xC54
+#define HDCP2X_RX_REAUTH_REQ_DDCM_INT_MASK (0)
+#define HDCP2X_RX_REAUTH_REQ_DDCM_INT_UNMASK BIT(25)
+#define HDCP_ENABLE (0)
+#define HDCP_ENCRYPTING_ON BIT(26)
+#define HDCP_TOP_CTRL 0xC00
+
+#define HDMI2_OFF (0)
+#define HDMI2_ON BIT(2)
+
+#define HDMITX_CONFIG 0x900
+#define HDMITX_SW_HPD BIT(29)
+#define HDMITX_SW_HPD_SHIFT (29)
+#define HDMITX_SW_RSTB BIT(31)
+#define HDMITX_SW_RSTB_SHIFT (31)
+
+#define HDMI_MODE_DVI (0)
+#define HDMI_MODE_HDMI BIT(3)
+
+#define HDMI_YUV420_MODE BIT(10)
+#define HDMI_YUV420_MODE_SHIFT (10)
+
+#define HPD_DDC_CTRL 0xC08
+#define HPD_DDC_STATUS 0xC60
+
+#define HPD_PIN_STA BIT(4)
+#define HPD_STATE (0x3)
+#define HPD_STATE_CONNECTED (2)
+#define HPD_STATE_DISCONNECTED (0)
+#define HPD_STATE_SHIFT (0)
+
+#define HTPLG_F_INT_STA BIT(1)
+#define HTPLG_R_INT_STA BIT(0)
+
+#define I2S2DSD_EN BIT(30)
+#define I2S_1ST_BIT_NOSHIFT BIT(8)
+#define I2S_EN GENMASK(19, 16)
+#define I2S_EN_SHIFT 16
+
+#define JUSTIFY_RIGHT BIT(10)
+
+#define LAYOUT BIT(18)
+#define LAYOUT0 0
+#define LAYOUT1 BIT(4)
+
+#define LFE_CC_SWAP BIT(1)
+
+#define MAP_SD0 0x0
+#define MAP_SD1 0x1
+#define MAP_SD2 0x2
+#define MAP_SD3 0x3
+
+#define MAX_1UI_WRITE GENMASK(15, 8)
+#define MAX_1UI_WRITE_SHIFT 8
+#define MAX_2UI_WRITE GENMASK(23, 16)
+#define MAX_2UI_WRITE_SHIFT 16
+
+#define MCLK_1152FS 0x6
+#define MCLK_128FS 0x0
+#define MCLK_192FS 0x7
+#define MCLK_256FS 0x1
+#define MCLK_384FS 0x2
+#define MCLK_512FS 0x3
+#define MCLK_768FS 0x4
+#define MCLK_CTSGEN_SEL 0
+#define MCLK_EN BIT(2)
+#define NO_MCLK_CTSGEN_SEL BIT(3)
+
+#define NULL_PKT_EN BIT(2)
+#define NULL_PKT_VSYNC_HIGH_EN BIT(3)
+
+#define OUTPUT_FORMAT_DEMUX_420_ENABLE BIT(10)
+
+#define PORD_F_INT_STA BIT(3)
+#define PORD_PIN_STA BIT(5)
+#define PORD_R_INT_STA BIT(2)
+
+#define REG_VMUTE_EN BIT(16)
+#define RST4AUDIO BIT(0)
+#define RST4AUDIO_ACR BIT(2)
+#define RST4AUDIO_FIFO BIT(1)
+
+#define SCDC_CTRL 0xC18
+
+#define SCK_EDGE_RISE BIT(14)
+
+#define SCR_OFF 0
+#define SCR_ON BIT(4)
+
+#define SEQ_READ_NO_ACK 0x2
+#define SEQ_WRITE_REQ_ACK 0x7
+
+#define SI2C_ADDR GENMASK(23, 16)
+#define SI2C_ADDR_READ (0xF4)
+#define SI2C_ADDR_SHIFT (16)
+#define SI2C_CONFIRM_READ BIT(2)
+#define SI2C_CTRL 0xCAC
+#define SI2C_RD BIT(1)
+#define SI2C_WDATA GENMASK(15, 8)
+#define SI2C_WDATA_SHIFT (8)
+#define SI2C_WR BIT(0)
+
+#define SPDIF_EN BIT(13)
+#define SPDIF_EN_SHIFT 13
+#define SPDIF_HEADER GENMASK(23, 0)
+#define SPDIF_INTERNAL_MODULE BIT(24)
+#define SPDIF_PKT00 GENMASK(31, 0)
+#define SPDIF_PKT01 GENMASK(23, 0)
+#define SPDIF_PKT02 GENMASK(31, 0)
+#define SPDIF_PKT03 GENMASK(23, 0)
+#define SPDIF_PKT04 GENMASK(31, 0)
+#define SPDIF_PKT05 GENMASK(23, 0)
+#define SPDIF_PKT06 GENMASK(31, 0)
+#define SPDIF_PKT07 GENMASK(23, 0)
+
+#define SPD_DIS 0
+#define SPD_DIS_WR 0
+#define SPD_EN BIT(1)
+#define SPD_EN_WR BIT(17)
+#define SPD_RPT_DIS 0
+#define SPD_RPT_EN BIT(1)
+
+#define TOP_AIF_HEADER 0x040
+#define TOP_AIF_PKT00 0x044
+#define TOP_AIF_PKT01 0x048
+#define TOP_AIF_PKT02 0x04C
+#define TOP_AIF_PKT03 0x050
+#define TOP_AUD_MAP 0x00C
+#define TOP_AVI_HEADER 0x024
+#define TOP_AVI_PKT00 0x028
+#define TOP_AVI_PKT01 0x02C
+#define TOP_AVI_PKT02 0x030
+#define TOP_AVI_PKT03 0x034
+#define TOP_AVI_PKT04 0x038
+#define TOP_AVI_PKT05 0x03C
+#define TOP_CFG00 0x000
+#define TOP_CFG01 0x004
+#define TOP_INFO_EN 0x01C
+#define TOP_INFO_EN_EXPAND 0x368
+#define TOP_INFO_RPT 0x020
+#define TOP_INT_CLR00 0x1B8
+#define TOP_INT_CLR01 0x1BC
+#define TOP_INT_MASK00 0x1B0
+#define TOP_INT_MASK01 0x1B4
+#define TOP_INT_STA00 0x1A8
+#define TOP_MISC_CTLR 0x1A4
+#define TOP_SPDIF_HEADER 0x054
+#define TOP_SPDIF_PKT00 0x058
+#define TOP_SPDIF_PKT01 0x05C
+#define TOP_SPDIF_PKT02 0x060
+#define TOP_SPDIF_PKT03 0x064
+#define TOP_SPDIF_PKT04 0x068
+#define TOP_SPDIF_PKT05 0x06C
+#define TOP_SPDIF_PKT06 0x070
+#define TOP_SPDIF_PKT07 0x074
+#define TOP_VMUTE_CFG1 0x1C8
+
+#define TPI_AUDIO_LOOKUP_DIS 0
+#define TPI_AUDIO_LOOKUP_EN BIT(2)
+
+#define VBIT_COM BIT(12)
+#define VBIT_PCM 0
+
+#define VID_DOWNSAMPLE_CONFIG 0x8F0
+#define VID_OUT_FORMAT 0x8FC
+
+#define WR_1UI_LOCK BIT(0)
+#define WR_1UI_UNLOCK 0
+#define WR_2UI_LOCK BIT(2)
+#define WR_2UI_UNLOCK 0
+#define WS_HIGH BIT(11)
+
+#endif /* _MTK_HDMI_REGS_H */
--
2.32.0

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