diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk618.txt b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk618.txt index dbc5e60c9758..a4d84a94fa8a 100644 --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk618.txt +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk618.txt @@ -210,3 +210,50 @@ Example: }; }; }; + +HDMI Connector +------------ + +Required properties: +- compatible: value should be one of the following: + "rockchip,rk618-hdmi" +- clocks: must include clock specifiers corresponding to entries in the + clock-names property. + See ../clocks/clock-bindings.txt for details. +- clock-names: list of clock names sorted in the same order as the clocks + property. Must contain "hdmi". +- interrupt-parent: phandle for the interrupt gpio controller +- interrupts: GPIO interrupt to which the chip is connected + +Required nodes: + +The connections to the video ports are modeled using the OF graph +bindings specified in Documentation/devicetree/bindings/graph.txt. + +Example: + +&rk618 { + status = "okay"; + + hdmi { + compatible = "rockchip,rk618-hdmi"; + clocks = <&CRU HDMI_CLK>; + clock-names = "hdmi"; + interrupt-parent = <&gpio3>; + interrupts = <23 IRQ_TYPE_LEVEL_HIGH>; + status = "okay"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + bridge_input_rgb: endpoint { + remote-endpoint = <&rgb_out_bridge>; + }; + }; + }; + }; +}; diff --git a/drivers/gpu/drm/rockchip/rk618/Makefile b/drivers/gpu/drm/rockchip/rk618/Makefile index a1630c46402d..777bdc358dd6 100644 --- a/drivers/gpu/drm/rockchip/rk618/Makefile +++ b/drivers/gpu/drm/rockchip/rk618/Makefile @@ -7,4 +7,5 @@ obj-$(CONFIG_DRM_ROCKCHIP_RK618) += rk618_scaler.o \ rk618_vif.o \ rk618_dither.o \ rk618_lvds.o \ - rk618_rgb.o + rk618_rgb.o \ + rk618_hdmi.o diff --git a/drivers/gpu/drm/rockchip/rk618/rk618_hdmi.c b/drivers/gpu/drm/rockchip/rk618/rk618_hdmi.c new file mode 100644 index 000000000000..18d70f8590d4 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rk618/rk618_hdmi.c @@ -0,0 +1,1579 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018 Rockchip Electronics Co. Ltd. + * + * Author: Chen Shunqing + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include + +#define RK618_HDMI_BASE 0x0400 + +#define DDC_SEGMENT_ADDR 0x30 + +enum PWR_MODE { + NORMAL, + LOWER_PWR, +}; + +#define HDMI_SCL_RATE (100 * 1000) +#define DDC_BUS_FREQ_L 0x4b +#define DDC_BUS_FREQ_H 0x4c + +#define HDMI_SYS_CTRL 0x00 +#define m_RST_ANALOG (1 << 6) +#define v_RST_ANALOG (0 << 6) +#define v_NOT_RST_ANALOG (1 << 6) +#define m_RST_DIGITAL (1 << 5) +#define v_RST_DIGITAL (0 << 5) +#define v_NOT_RST_DIGITAL (1 << 5) +#define m_REG_CLK_INV (1 << 4) +#define v_REG_CLK_NOT_INV (0 << 4) +#define v_REG_CLK_INV (1 << 4) +#define m_VCLK_INV (1 << 3) +#define v_VCLK_NOT_INV (0 << 3) +#define v_VCLK_INV (1 << 3) +#define m_REG_CLK_SOURCE (1 << 2) +#define v_REG_CLK_SOURCE_TMDS (0 << 2) +#define v_REG_CLK_SOURCE_SYS (1 << 2) +#define m_POWER (1 << 1) +#define v_PWR_ON (0 << 1) +#define v_PWR_OFF (1 << 1) +#define m_INT_POL (1 << 0) +#define v_INT_POL_HIGH 1 +#define v_INT_POL_LOW 0 + +#define HDMI_VIDEO_CONTROL1 0x01 +#define m_VIDEO_INPUT_FORMAT (7 << 1) +#define m_DE_SOURCE (1 << 0) +#define v_VIDEO_INPUT_FORMAT(n) ((n) << 1) +#define v_DE_EXTERNAL 1 +#define v_DE_INTERNAL 0 +enum { + VIDEO_INPUT_SDR_RGB444 = 0, + VIDEO_INPUT_DDR_RGB444 = 5, + VIDEO_INPUT_DDR_YCBCR422 = 6 +}; + +#define HDMI_VIDEO_CONTROL2 0x02 +#define m_VIDEO_OUTPUT_COLOR (3 << 6) +#define m_VIDEO_INPUT_BITS (3 << 4) +#define m_VIDEO_INPUT_CSP (1 << 0) +#define v_VIDEO_OUTPUT_COLOR(n) (((n) & 0x3) << 6) +#define v_VIDEO_INPUT_BITS(n) ((n) << 4) +#define v_VIDEO_INPUT_CSP(n) ((n) << 0) +enum { + VIDEO_INPUT_12BITS = 0, + VIDEO_INPUT_10BITS = 1, + VIDEO_INPUT_REVERT = 2, + VIDEO_INPUT_8BITS = 3, +}; + +#define HDMI_VIDEO_CONTROL 0x03 +#define m_VIDEO_AUTO_CSC (1 << 7) +#define v_VIDEO_AUTO_CSC(n) ((n) << 7) +#define m_VIDEO_C0_C2_SWAP (1 << 0) +#define v_VIDEO_C0_C2_SWAP(n) ((n) << 0) +enum { + C0_C2_CHANGE_ENABLE = 0, + C0_C2_CHANGE_DISABLE = 1, + AUTO_CSC_DISABLE = 0, + AUTO_CSC_ENABLE = 1, +}; + +#define HDMI_VIDEO_CONTROL3 0x04 +#define m_COLOR_DEPTH_NOT_INDICATED (1 << 4) +#define m_SOF (1 << 3) +#define m_COLOR_RANGE (1 << 2) +#define m_CSC (1 << 0) +#define v_COLOR_DEPTH_NOT_INDICATED(n) ((n) << 4) +#define v_SOF_ENABLE (0 << 3) +#define v_SOF_DISABLE (1 << 3) +#define v_COLOR_RANGE_FULL (1 << 2) +#define v_COLOR_RANGE_LIMITED (0 << 2) +#define v_CSC_ENABLE 1 +#define v_CSC_DISABLE 0 + +#define HDMI_AV_MUTE 0x05 +#define m_AVMUTE_CLEAR (1 << 7) +#define m_AVMUTE_ENABLE (1 << 6) +#define m_AUDIO_PD (1 << 2) +#define m_AUDIO_MUTE (1 << 1) +#define m_VIDEO_BLACK (1 << 0) +#define v_AVMUTE_CLEAR(n) ((n) << 7) +#define v_AVMUTE_ENABLE(n) ((n) << 6) +#define v_AUDIO_MUTE(n) ((n) << 1) +#define v_AUDIO_PD(n) ((n) << 2) +#define v_VIDEO_MUTE(n) ((n) << 0) + +#define HDMI_VIDEO_TIMING_CTL 0x08 +#define v_HSYNC_POLARITY(n) ((n) << 3) +#define v_VSYNC_POLARITY(n) ((n) << 2) +#define v_INETLACE(n) ((n) << 1) +#define v_EXTERANL_VIDEO(n) ((n) << 0) + +#define HDMI_VIDEO_EXT_HTOTAL_L 0x09 +#define HDMI_VIDEO_EXT_HTOTAL_H 0x0a +#define HDMI_VIDEO_EXT_HBLANK_L 0x0b +#define HDMI_VIDEO_EXT_HBLANK_H 0x0c +#define HDMI_VIDEO_EXT_HDELAY_L 0x0d +#define HDMI_VIDEO_EXT_HDELAY_H 0x0e +#define HDMI_VIDEO_EXT_HDURATION_L 0x0f +#define HDMI_VIDEO_EXT_HDURATION_H 0x10 +#define HDMI_VIDEO_EXT_VTOTAL_L 0x11 +#define HDMI_VIDEO_EXT_VTOTAL_H 0x12 +#define HDMI_VIDEO_EXT_VBLANK 0x13 +#define HDMI_VIDEO_EXT_VDELAY 0x14 +#define HDMI_VIDEO_EXT_VDURATION 0x15 + +#define HDMI_VIDEO_CSC_COEF 0x18 + +#define HDMI_AUDIO_CTRL1 0x35 +enum { + CTS_SOURCE_INTERNAL = 0, + CTS_SOURCE_EXTERNAL = 1, +}; + +#define v_CTS_SOURCE(n) ((n) << 7) + +enum { + DOWNSAMPLE_DISABLE = 0, + DOWNSAMPLE_1_2 = 1, + DOWNSAMPLE_1_4 = 2, +}; + +#define v_DOWN_SAMPLE(n) ((n) << 5) + +enum { + AUDIO_SOURCE_IIS = 0, + AUDIO_SOURCE_SPDIF = 1, +}; + +#define v_AUDIO_SOURCE(n) ((n) << 3) + +#define v_MCLK_ENABLE(n) ((n) << 2) +enum { + MCLK_128FS = 0, + MCLK_256FS = 1, + MCLK_384FS = 2, + MCLK_512FS = 3, +}; + +#define v_MCLK_RATIO(n) (n) + +#define AUDIO_SAMPLE_RATE 0x37 +enum { + AUDIO_32K = 0x3, + AUDIO_441K = 0x0, + AUDIO_48K = 0x2, + AUDIO_882K = 0x8, + AUDIO_96K = 0xa, + AUDIO_1764K = 0xc, + AUDIO_192K = 0xe, +}; + +#define AUDIO_I2S_MODE 0x38 +enum { + I2S_CHANNEL_1_2 = 1, + I2S_CHANNEL_3_4 = 3, + I2S_CHANNEL_5_6 = 7, + I2S_CHANNEL_7_8 = 0xf +}; + +#define v_I2S_CHANNEL(n) ((n) << 2) +enum { + I2S_STANDARD = 0, + I2S_LEFT_JUSTIFIED = 1, + I2S_RIGHT_JUSTIFIED = 2, +}; + +#define v_I2S_MODE(n) (n) + +#define AUDIO_I2S_MAP 0x39 +#define AUDIO_I2S_SWAPS_SPDIF 0x3a +#define v_SPIDF_FREQ(n) (n) + +#define N_32K 0x1000 +#define N_441K 0x1880 +#define N_882K 0x3100 +#define N_1764K 0x6200 +#define N_48K 0x1800 +#define N_96K 0x3000 +#define N_192K 0x6000 + +#define HDMI_AUDIO_CHANNEL_STATUS 0x3e +#define m_AUDIO_STATUS_NLPCM (1 << 7) +#define m_AUDIO_STATUS_USE (1 << 6) +#define m_AUDIO_STATUS_COPYRIGHT (1 << 5) +#define m_AUDIO_STATUS_ADDITION (3 << 2) +#define m_AUDIO_STATUS_CLK_ACCURACY (2 << 0) +#define v_AUDIO_STATUS_NLPCM(n) (((n) & 1) << 7) +#define AUDIO_N_H 0x3f +#define AUDIO_N_M 0x40 +#define AUDIO_N_L 0x41 + +#define HDMI_AUDIO_CTS_H 0x45 +#define HDMI_AUDIO_CTS_M 0x46 +#define HDMI_AUDIO_CTS_L 0x47 + +#define HDMI_DDC_CLK_L 0x4b +#define HDMI_DDC_CLK_H 0x4c + +#define HDMI_EDID_SEGMENT_POINTER 0x4d +#define HDMI_EDID_WORD_ADDR 0x4e +#define HDMI_EDID_FIFO_OFFSET 0x4f +#define HDMI_EDID_FIFO_ADDR 0x50 + +#define HDMI_PACKET_SEND_MANUAL 0x9c +#define HDMI_PACKET_SEND_AUTO 0x9d +#define m_PACKET_GCP_EN (1 << 7) +#define m_PACKET_MSI_EN (1 << 6) +#define m_PACKET_SDI_EN (1 << 5) +#define m_PACKET_VSI_EN (1 << 4) +#define v_PACKET_GCP_EN(n) (((n) & 1) << 7) +#define v_PACKET_MSI_EN(n) (((n) & 1) << 6) +#define v_PACKET_SDI_EN(n) (((n) & 1) << 5) +#define v_PACKET_VSI_EN(n) (((n) & 1) << 4) + +#define HDMI_CONTROL_PACKET_BUF_INDEX 0x9f +enum { + INFOFRAME_VSI = 0x05, + INFOFRAME_AVI = 0x06, + INFOFRAME_AAI = 0x08, +}; + +#define HDMI_CONTROL_PACKET_ADDR 0xa0 +#define HDMI_MAXIMUM_INFO_FRAME_SIZE 0x11 +enum { + AVI_COLOR_MODE_RGB = 0, + AVI_COLOR_MODE_YCBCR422 = 1, + AVI_COLOR_MODE_YCBCR444 = 2, + AVI_COLORIMETRY_NO_DATA = 0, + + AVI_COLORIMETRY_SMPTE_170M = 1, + AVI_COLORIMETRY_ITU709 = 2, + AVI_COLORIMETRY_EXTENDED = 3, + + AVI_CODED_FRAME_ASPECT_NO_DATA = 0, + AVI_CODED_FRAME_ASPECT_4_3 = 1, + AVI_CODED_FRAME_ASPECT_16_9 = 2, + + ACTIVE_ASPECT_RATE_SAME_AS_CODED_FRAME = 0x08, + ACTIVE_ASPECT_RATE_4_3 = 0x09, + ACTIVE_ASPECT_RATE_16_9 = 0x0A, + ACTIVE_ASPECT_RATE_14_9 = 0x0B, +}; + +#define HDMI_HDCP_CTRL 0x52 +#define m_HDMI_DVI (1 << 1) +#define v_HDMI_DVI(n) ((n) << 1) + +#define HDMI_INTERRUPT_MASK1 0xc0 +#define HDMI_INTERRUPT_STATUS1 0xc1 +#define m_INT_HOTPLUG_RK618 BIT(7) +#define m_INT_ACTIVE_VSYNC (1 << 5) +#define m_INT_EDID_READY (1 << 2) + +#define HDMI_INTERRUPT_MASK2 0xc2 +#define HDMI_INTERRUPT_STATUS2 0xc3 +#define m_INT_HDCP_ERR (1 << 7) +#define m_INT_BKSV_FLAG (1 << 6) +#define m_INT_HDCP_OK (1 << 4) + +#define HDMI_STATUS 0xc8 +#define m_HOTPLUG (1 << 7) +#define m_MASK_INT_HOTPLUG (1 << 5) +#define m_INT_HOTPLUG (1 << 1) +#define v_MASK_INT_HOTPLUG(n) (((n) & 0x1) << 5) + +#define HDMI_COLORBAR 0xc9 + +#define HDMI_PHY_SYNC 0xce +#define HDMI_PHY_SYS_CTL 0xe0 +#define m_TMDS_CLK_SOURCE (1 << 5) +#define v_TMDS_FROM_PLL (0 << 5) +#define v_TMDS_FROM_GEN (1 << 5) +#define m_PHASE_CLK (1 << 4) +#define v_DEFAULT_PHASE (0 << 4) +#define v_SYNC_PHASE (1 << 4) +#define m_TMDS_CURRENT_PWR (1 << 3) +#define v_TURN_ON_CURRENT (0 << 3) +#define v_CAT_OFF_CURRENT (1 << 3) +#define m_BANDGAP_PWR (1 << 2) +#define v_BANDGAP_PWR_UP (0 << 2) +#define v_BANDGAP_PWR_DOWN (1 << 2) +#define m_PLL_PWR (1 << 1) +#define v_PLL_PWR_UP (0 << 1) +#define v_PLL_PWR_DOWN (1 << 1) +#define m_TMDS_CHG_PWR (1 << 0) +#define v_TMDS_CHG_PWR_UP (0 << 0) +#define v_TMDS_CHG_PWR_DOWN (1 << 0) + +#define HDMI_PHY_CHG_PWR 0xe1 +#define v_CLK_CHG_PWR(n) (((n) & 1) << 3) +#define v_DATA_CHG_PWR(n) (((n) & 7) << 0) + +#define HDMI_PHY_DRIVER 0xe2 +#define v_CLK_MAIN_DRIVER(n) ((n) << 4) +#define v_DATA_MAIN_DRIVER(n) ((n) << 0) + +#define HDMI_PHY_PRE_EMPHASIS 0xe3 +#define v_PRE_EMPHASIS(n) (((n) & 7) << 4) +#define v_CLK_PRE_DRIVER(n) (((n) & 3) << 2) +#define v_DATA_PRE_DRIVER(n) (((n) & 3) << 0) + +#define HDMI_PHY_FEEDBACK_DIV_RATIO_LOW 0xe7 +#define v_FEEDBACK_DIV_LOW(n) ((n) & 0xff) +#define HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH 0xe8 +#define v_FEEDBACK_DIV_HIGH(n) ((n) & 1) + +#define HDMI_PHY_PRE_DIV_RATIO 0xed +#define v_PRE_DIV_RATIO(n) ((n) & 0x1f) + +#define HDMI_CEC_CTRL 0xd0 +#define m_ADJUST_FOR_HISENSE (1 << 6) +#define m_REJECT_RX_BROADCAST (1 << 5) +#define m_BUSFREETIME_ENABLE (1 << 2) +#define m_REJECT_RX (1 << 1) +#define m_START_TX (1 << 0) + +#define HDMI_CEC_DATA 0xd1 +#define HDMI_CEC_TX_OFFSET 0xd2 +#define HDMI_CEC_RX_OFFSET 0xd3 +#define HDMI_CEC_CLK_H 0xd4 +#define HDMI_CEC_CLK_L 0xd5 +#define HDMI_CEC_TX_LENGTH 0xd6 +#define HDMI_CEC_RX_LENGTH 0xd7 +#define HDMI_CEC_TX_INT_MASK 0xd8 +#define m_TX_DONE (1 << 3) +#define m_TX_NOACK (1 << 2) +#define m_TX_BROADCAST_REJ (1 << 1) +#define m_TX_BUSNOTFREE (1 << 0) + +#define HDMI_CEC_RX_INT_MASK 0xd9 +#define m_RX_LA_ERR (1 << 4) +#define m_RX_GLITCH (1 << 3) +#define m_RX_DONE (1 << 0) + +#define HDMI_CEC_TX_INT 0xda +#define HDMI_CEC_RX_INT 0xdb +#define HDMI_CEC_BUSFREETIME_L 0xdc +#define HDMI_CEC_BUSFREETIME_H 0xdd +#define HDMI_CEC_LOGICADDR 0xde + +struct audio_info { + int sample_rate; + int channels; + int sample_width; +}; + +struct hdmi_data_info { + int vic; + bool sink_is_hdmi; + bool sink_has_audio; + unsigned int enc_in_format; + unsigned int enc_out_format; + unsigned int colorimetry; +}; + +struct rk618_hdmi_i2c { + struct i2c_adapter adap; + + u8 ddc_addr; + u8 segment_addr; + + struct mutex lock; +}; + +struct rk618_hdmi_phy_config { + unsigned long mpixelclock; + u8 pre_emphasis; /* pre-emphasis value */ + u8 vlev_ctr; /* voltage level control */ +}; + +struct rk618_hdmi { + struct device *dev; + int irq; + struct regmap *regmap; + struct rk618 *parent; + struct clk *clock; + + struct drm_bridge base; + struct drm_connector connector; + struct drm_bridge *bridge; + + struct rk618_hdmi_i2c *i2c; + struct i2c_adapter *ddc; + + unsigned int tmds_rate; + + struct platform_device *audio_pdev; + bool audio_enable; + + struct hdmi_data_info hdmi_data; + struct drm_display_mode previous_mode; +}; + +enum { + CSC_ITU601_16_235_TO_RGB_0_255_8BIT, + CSC_ITU601_0_255_TO_RGB_0_255_8BIT, + CSC_ITU709_16_235_TO_RGB_0_255_8BIT, + CSC_RGB_0_255_TO_ITU601_16_235_8BIT, + CSC_RGB_0_255_TO_ITU709_16_235_8BIT, + CSC_RGB_0_255_TO_RGB_16_235_8BIT, +}; + +static const char coeff_csc[][24] = { + /* + * YUV2RGB:601 SD mode(Y[16:235], UV[16:240], RGB[0:255]): + * R = 1.164*Y + 1.596*V - 204 + * G = 1.164*Y - 0.391*U - 0.813*V + 154 + * B = 1.164*Y + 2.018*U - 258 + */ + { + 0x04, 0xa7, 0x00, 0x00, 0x06, 0x62, 0x02, 0xcc, + 0x04, 0xa7, 0x11, 0x90, 0x13, 0x40, 0x00, 0x9a, + 0x04, 0xa7, 0x08, 0x12, 0x00, 0x00, 0x03, 0x02 + }, + /* + * YUV2RGB:601 SD mode(YUV[0:255],RGB[0:255]): + * R = Y + 1.402*V - 248 + * G = Y - 0.344*U - 0.714*V + 135 + * B = Y + 1.772*U - 227 + */ + { + 0x04, 0x00, 0x00, 0x00, 0x05, 0x9b, 0x02, 0xf8, + 0x04, 0x00, 0x11, 0x60, 0x12, 0xdb, 0x00, 0x87, + 0x04, 0x00, 0x07, 0x16, 0x00, 0x00, 0x02, 0xe3 + }, + /* + * YUV2RGB:709 HD mode(Y[16:235],UV[16:240],RGB[0:255]): + * R = 1.164*Y + 1.793*V - 248 + * G = 1.164*Y - 0.213*U - 0.534*V + 77 + * B = 1.164*Y + 2.115*U - 289 + */ + { + 0x04, 0xa7, 0x00, 0x00, 0x07, 0x2c, 0x02, 0xf8, + 0x04, 0xa7, 0x10, 0xda, 0x12, 0x22, 0x00, 0x4d, + 0x04, 0xa7, 0x08, 0x74, 0x00, 0x00, 0x03, 0x21 + }, + + /* + * RGB2YUV:601 SD mode: + * Cb = -0.291G - 0.148R + 0.439B + 128 + * Y = 0.504G + 0.257R + 0.098B + 16 + * Cr = -0.368G + 0.439R - 0.071B + 128 + */ + { + 0x11, 0x5f, 0x01, 0x82, 0x10, 0x23, 0x00, 0x80, + 0x02, 0x1c, 0x00, 0xa1, 0x00, 0x36, 0x00, 0x1e, + 0x11, 0x29, 0x10, 0x59, 0x01, 0x82, 0x00, 0x80 + }, + /* + * RGB2YUV:709 HD mode: + * Cb = - 0.338G - 0.101R + 0.439B + 128 + * Y = 0.614G + 0.183R + 0.062B + 16 + * Cr = - 0.399G + 0.439R - 0.040B + 128 + */ + { + 0x11, 0x98, 0x01, 0xc1, 0x10, 0x28, 0x00, 0x80, + 0x02, 0x74, 0x00, 0xbb, 0x00, 0x3f, 0x00, 0x10, + 0x11, 0x5a, 0x10, 0x67, 0x01, 0xc1, 0x00, 0x80 + }, + /* + * RGB[0:255]2RGB[16:235]: + * R' = R x (235-16)/255 + 16; + * G' = G x (235-16)/255 + 16; + * B' = B x (235-16)/255 + 16; + */ + { + 0x00, 0x00, 0x03, 0x6F, 0x00, 0x00, 0x00, 0x10, + 0x03, 0x6F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, + 0x00, 0x00, 0x00, 0x00, 0x03, 0x6F, 0x00, 0x10 + }, +}; + +static inline struct rk618_hdmi *bridge_to_hdmi(struct drm_bridge *b) +{ + return container_of(b, struct rk618_hdmi, base); +} + +static inline struct rk618_hdmi *connector_to_hdmi(struct drm_connector *c) +{ + return container_of(c, struct rk618_hdmi, connector); +} + +static inline u8 hdmi_readb(struct rk618_hdmi *hdmi, u16 offset) +{ + u32 val; + + regmap_read(hdmi->regmap, (RK618_HDMI_BASE + ((offset) << 2)), &val); + + return val; +} + +static inline void hdmi_writeb(struct rk618_hdmi *hdmi, u16 offset, u32 val) +{ + regmap_write(hdmi->regmap, (RK618_HDMI_BASE + ((offset) << 2)), val); +} + +static void rk618_hdmi_set_polarity(struct rk618_hdmi *hdmi, int vic) +{ + u32 val, mask = HDMI_HSYNC_POL_INV | HDMI_VSYNC_POL_INV; + + if (vic == 76 || vic == 75 || vic == 5 || vic == 20 || + vic == 39 || vic == 16 || vic == 4) + val = HDMI_HSYNC_POL_INV | HDMI_VSYNC_POL_INV; + else + val = 0; + + regmap_update_bits(hdmi->parent->regmap, RK618_MISC_CON, mask, val); +} + +static void rk618_hdmi_pol_init(struct rk618_hdmi *hdmi, int pol) +{ + u32 val; + + if (pol) + val = 0x0; + else + val = 0x20; + regmap_update_bits(hdmi->parent->regmap, RK618_MISC_CON, + INT_ACTIVE_LOW, val); + + regmap_update_bits(hdmi->parent->regmap, + RK618_MISC_CON, HDMI_CLK_SEL_MASK, + HDMI_CLK_SEL_VIDEO_INF0_CLK); +} + +static inline void hdmi_modb(struct rk618_hdmi *hdmi, u16 offset, + u32 msk, u32 val) +{ + u8 temp = hdmi_readb(hdmi, offset) & ~msk; + + temp |= val & msk; + hdmi_writeb(hdmi, offset, temp); +} + +static void rk618_hdmi_i2c_init(struct rk618_hdmi *hdmi) +{ + int ddc_bus_freq; + + ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE; + + hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF); + hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF); + + /* Clear the EDID interrupt flag and mute the interrupt */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0); + hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); + hdmi_modb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_HOTPLUG_RK618, + m_INT_HOTPLUG_RK618); +} + +static void rk618_hdmi_sys_power(struct rk618_hdmi *hdmi, bool enable) +{ + if (enable) + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON); + else + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF); +} + +static struct rk618_hdmi_phy_config rk618_hdmi_phy_config[] = { + /* pixelclk pre-emp vlev */ + { 74250000, 0x0f, 0xaa }, + { 165000000, 0x0f, 0xaa }, + { ~0UL, 0x00, 0x00 } +}; + +static void rk618_hdmi_set_pwr_mode(struct rk618_hdmi *hdmi, int mode) +{ + const struct rk618_hdmi_phy_config *phy_config = + rk618_hdmi_phy_config; + + switch (mode) { + case NORMAL: + rk618_hdmi_sys_power(hdmi, false); + for (; phy_config->mpixelclock != ~0UL; phy_config++) + if (hdmi->tmds_rate <= phy_config->mpixelclock) + break; + if (!phy_config->mpixelclock) + return; + hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, + phy_config->pre_emphasis); + hdmi_writeb(hdmi, HDMI_PHY_DRIVER, phy_config->vlev_ctr); + + hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x2d); + hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x2c); + hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x28); + hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x20); + hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f); + hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00); + hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01); + + rk618_hdmi_sys_power(hdmi, true); + break; + + case LOWER_PWR: + rk618_hdmi_sys_power(hdmi, false); + hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00); + hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00); + hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00); + hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x2f); + break; + + default: + dev_err(hdmi->dev, "Unknown power mode %d\n", mode); + } +} + +static void rk618_hdmi_reset(struct rk618_hdmi *hdmi) +{ + u32 val; + u32 msk; + + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_DIGITAL, v_NOT_RST_DIGITAL); + usleep_range(100, 110); + + hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_ANALOG, v_NOT_RST_ANALOG); + usleep_range(100, 110); + + msk = m_REG_CLK_INV | m_REG_CLK_SOURCE | m_POWER | m_INT_POL; + val = v_REG_CLK_INV | v_REG_CLK_SOURCE_SYS | v_PWR_ON | v_INT_POL_HIGH; + hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val); + + rk618_hdmi_set_pwr_mode(hdmi, NORMAL); +} + +static int rk618_hdmi_upload_frame(struct rk618_hdmi *hdmi, int setup_rc, + union hdmi_infoframe *frame, u32 frame_index, + u32 mask, u32 disable, u32 enable) +{ + if (mask) + hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable); + + hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index); + + if (setup_rc >= 0) { + u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE]; + ssize_t rc, i; + + rc = hdmi_infoframe_pack(frame, packed_frame, + sizeof(packed_frame)); + if (rc < 0) + return rc; + + for (i = 0; i < rc; i++) + hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i, + packed_frame[i]); + + if (mask) + hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, enable); + } + + return setup_rc; +} + +static int rk618_hdmi_config_video_vsi(struct rk618_hdmi *hdmi, + struct drm_display_mode *mode) +{ + union hdmi_infoframe frame; + int rc; + + rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi, + mode); + + return rk618_hdmi_upload_frame(hdmi, rc, &frame, + INFOFRAME_VSI, m_PACKET_VSI_EN, + v_PACKET_VSI_EN(0), v_PACKET_VSI_EN(1)); +} + +static int rk618_hdmi_config_video_avi(struct rk618_hdmi *hdmi, + struct drm_display_mode *mode) +{ + union hdmi_infoframe frame; + int rc; + + rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode, false); + + if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444) + frame.avi.colorspace = HDMI_COLORSPACE_YUV444; + else if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV422) + frame.avi.colorspace = HDMI_COLORSPACE_YUV422; + else + frame.avi.colorspace = HDMI_COLORSPACE_RGB; + + if (frame.avi.colorspace != HDMI_COLORSPACE_RGB) + frame.avi.colorimetry = hdmi->hdmi_data.colorimetry; + + frame.avi.scan_mode = HDMI_SCAN_MODE_NONE; + + return rk618_hdmi_upload_frame(hdmi, rc, &frame, + INFOFRAME_AVI, 0, 0, 0); +} + +static int rk618_hdmi_config_audio_aai(struct rk618_hdmi *hdmi, + struct audio_info *audio) +{ + struct hdmi_audio_infoframe *faudio; + union hdmi_infoframe frame; + int rc; + + rc = hdmi_audio_infoframe_init(&frame.audio); + faudio = (struct hdmi_audio_infoframe *)&frame; + + faudio->channels = audio->channels; + + return rk618_hdmi_upload_frame(hdmi, rc, &frame, + INFOFRAME_AAI, 0, 0, 0); +} + +static int rk618_hdmi_config_video_csc(struct rk618_hdmi *hdmi) +{ + struct hdmi_data_info *data = &hdmi->hdmi_data; + int c0_c2_change = 0; + int csc_enable = 0; + int csc_mode = 0; + int auto_csc = 0; + int value; + int i; + + /* Input video mode is SDR RGB24bit, data enable signal from external */ + hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL1, v_DE_EXTERNAL | + v_VIDEO_INPUT_FORMAT(VIDEO_INPUT_SDR_RGB444)); + + /* Input color hardcode to RGB, and output color hardcode to RGB888 */ + value = v_VIDEO_INPUT_BITS(VIDEO_INPUT_8BITS) | + v_VIDEO_OUTPUT_COLOR(0) | + v_VIDEO_INPUT_CSP(0); + hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL2, value); + + if (data->enc_in_format == data->enc_out_format) { + if ((data->enc_in_format == HDMI_COLORSPACE_RGB) || + (data->enc_in_format >= HDMI_COLORSPACE_YUV444)) { + value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1); + hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL3, value); + + hdmi_modb(hdmi, HDMI_VIDEO_CONTROL, + m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP, + v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) | + v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE)); + return 0; + } + } + + if (data->colorimetry == HDMI_COLORIMETRY_ITU_601) { + if ((data->enc_in_format == HDMI_COLORSPACE_RGB) && + (data->enc_out_format == HDMI_COLORSPACE_YUV444)) { + csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT; + auto_csc = AUTO_CSC_DISABLE; + c0_c2_change = C0_C2_CHANGE_DISABLE; + csc_enable = v_CSC_ENABLE; + } else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) && + (data->enc_out_format == HDMI_COLORSPACE_RGB)) { + csc_mode = CSC_ITU601_16_235_TO_RGB_0_255_8BIT; + auto_csc = AUTO_CSC_ENABLE; + c0_c2_change = C0_C2_CHANGE_DISABLE; + csc_enable = v_CSC_DISABLE; + } + } else { + if ((data->enc_in_format == HDMI_COLORSPACE_RGB) && + (data->enc_out_format == HDMI_COLORSPACE_YUV444)) { + csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT; + auto_csc = AUTO_CSC_DISABLE; + c0_c2_change = C0_C2_CHANGE_DISABLE; + csc_enable = v_CSC_ENABLE; + } else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) && + (data->enc_out_format == HDMI_COLORSPACE_RGB)) { + csc_mode = CSC_ITU709_16_235_TO_RGB_0_255_8BIT; + auto_csc = AUTO_CSC_ENABLE; + c0_c2_change = C0_C2_CHANGE_DISABLE; + csc_enable = v_CSC_DISABLE; + } + } + + for (i = 0; i < 24; i++) + hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i, + coeff_csc[csc_mode][i]); + + value = v_SOF_DISABLE | csc_enable | v_COLOR_DEPTH_NOT_INDICATED(1); + hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL3, value); + hdmi_modb(hdmi, HDMI_VIDEO_CONTROL, m_VIDEO_AUTO_CSC | + m_VIDEO_C0_C2_SWAP, v_VIDEO_AUTO_CSC(auto_csc) | + v_VIDEO_C0_C2_SWAP(c0_c2_change)); + + return 0; +} + +static int rk618_hdmi_config_video_timing(struct rk618_hdmi *hdmi, + struct drm_display_mode *mode) +{ + int value; + + /* Set detail external video timing polarity and interlace mode */ + value = v_EXTERANL_VIDEO(1); + value |= mode->flags & DRM_MODE_FLAG_PHSYNC ? + v_HSYNC_POLARITY(1) : v_HSYNC_POLARITY(0); + value |= mode->flags & DRM_MODE_FLAG_PVSYNC ? + v_VSYNC_POLARITY(1) : v_VSYNC_POLARITY(0); + value |= mode->flags & DRM_MODE_FLAG_INTERLACE ? + v_INETLACE(1) : v_INETLACE(0); + hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value); + + /* Set detail external video timing */ + value = mode->htotal; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF); + + value = mode->htotal - mode->hdisplay; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF); + + value = mode->htotal - mode->hsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF); + + value = mode->hsync_end - mode->hsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF); + + value = mode->vtotal; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value & 0xFF); + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_H, (value >> 8) & 0xFF); + + value = mode->vtotal - mode->vdisplay; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VBLANK, value & 0xFF); + + value = mode->vtotal - mode->vsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDELAY, value & 0xFF); + + value = mode->vsync_end - mode->vsync_start; + hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDURATION, value & 0xFF); + + hdmi_writeb(hdmi, HDMI_PHY_PRE_DIV_RATIO, 0x1e); + hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c); + hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01); + + return 0; +} + +static int rk618_hdmi_setup(struct rk618_hdmi *hdmi, + struct drm_display_mode *mode) +{ + hdmi->hdmi_data.vic = drm_match_cea_mode(mode); + + hdmi->hdmi_data.enc_in_format = HDMI_COLORSPACE_RGB; + hdmi->hdmi_data.enc_out_format = HDMI_COLORSPACE_RGB; + + if ((hdmi->hdmi_data.vic == 6) || (hdmi->hdmi_data.vic == 7) || + (hdmi->hdmi_data.vic == 21) || (hdmi->hdmi_data.vic == 22) || + (hdmi->hdmi_data.vic == 2) || (hdmi->hdmi_data.vic == 3) || + (hdmi->hdmi_data.vic == 17) || (hdmi->hdmi_data.vic == 18)) + hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601; + else + hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709; + + /* Mute video and audio output */ + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK, + v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1)); + + /* Set HDMI Mode */ + hdmi_writeb(hdmi, HDMI_HDCP_CTRL, + v_HDMI_DVI(hdmi->hdmi_data.sink_is_hdmi)); + + rk618_hdmi_config_video_timing(hdmi, mode); + + rk618_hdmi_config_video_csc(hdmi); + + if (hdmi->hdmi_data.sink_is_hdmi) { + rk618_hdmi_config_video_avi(hdmi, mode); + rk618_hdmi_config_video_vsi(hdmi, mode); + } + + /* + * When IP controller have configured to an accurate video + * timing, then the TMDS clock source would be switched to + * DCLK_LCDC, so we need to init the TMDS rate to mode pixel + * clock rate, and reconfigure the DDC clock. + */ + hdmi->tmds_rate = mode->clock * 1000; + rk618_hdmi_i2c_init(hdmi); + + /* Unmute video and audio output */ + hdmi_modb(hdmi, HDMI_AV_MUTE, m_VIDEO_BLACK, v_VIDEO_MUTE(0)); + if (hdmi->audio_enable) + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE, v_AUDIO_MUTE(0)); + + return 0; +} + +static enum drm_connector_status +rk618_hdmi_connector_detect(struct drm_connector *connector, bool force) +{ + struct rk618_hdmi *hdmi = connector_to_hdmi(connector); + + if (hdmi->bridge) + return connector_status_connected; + + return (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ? + connector_status_connected : connector_status_disconnected; +} + +static int rk618_hdmi_connector_get_modes(struct drm_connector *connector) +{ + struct rk618_hdmi *hdmi = connector_to_hdmi(connector); + struct drm_display_mode *mode; + struct drm_display_info *info = &connector->display_info; + const u8 def_modes[6] = {4, 16, 31, 19, 17, 2}; + struct edid *edid; + int ret = 0; + u8 i; + + if (!hdmi->ddc) + return 0; + + edid = drm_get_edid(connector, hdmi->ddc); + if (edid) { + hdmi->hdmi_data.sink_is_hdmi = drm_detect_hdmi_monitor(edid); + hdmi->hdmi_data.sink_has_audio = drm_detect_monitor_audio(edid); + drm_mode_connector_update_edid_property(connector, edid); + ret = drm_add_edid_modes(connector, edid); + kfree(edid); + } else { + hdmi->hdmi_data.sink_is_hdmi = true; + hdmi->hdmi_data.sink_has_audio = true; + for (i = 0; i < sizeof(def_modes); i++) { + mode = drm_display_mode_from_vic_index(connector, + def_modes, + 31, i); + if (mode) { + if (!i) + mode->type = DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + ret++; + } + } + info->edid_hdmi_dc_modes = 0; + info->hdmi.y420_dc_modes = 0; + info->color_formats = 0; + + dev_info(hdmi->dev, "failed to get edid\n"); + } + + return ret; +} + +static enum drm_mode_status +rk618_hdmi_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + if (mode->clock == 148500 || mode->clock == 146250 || + mode->clock == 108000 || mode->clock == 106500 || + mode->clock == 85500 || mode->clock == 74250) + return MODE_OK; + else + return MODE_BAD; +} + +static struct drm_encoder * +rk618_hdmi_connector_best_encoder(struct drm_connector *connector) +{ + struct rk618_hdmi *hdmi = connector_to_hdmi(connector); + + return hdmi->base.encoder; +} + +static int +rk618_hdmi_probe_single_connector_modes(struct drm_connector *connector, + uint32_t maxX, uint32_t maxY) +{ + return drm_helper_probe_single_connector_modes(connector, 1920, 1080); +} + +static const struct drm_connector_funcs rk618_hdmi_connector_funcs = { + .dpms = drm_atomic_helper_connector_dpms, + .fill_modes = rk618_hdmi_probe_single_connector_modes, + .detect = rk618_hdmi_connector_detect, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static const struct drm_connector_helper_funcs +rk618_hdmi_connector_helper_funcs = { + .get_modes = rk618_hdmi_connector_get_modes, + .mode_valid = rk618_hdmi_connector_mode_valid, + .best_encoder = rk618_hdmi_connector_best_encoder, +}; + +static void rk618_hdmi_bridge_mode_set(struct drm_bridge *bridge, + struct drm_display_mode *mode, + struct drm_display_mode *adj_mode) +{ + struct rk618_hdmi *hdmi = bridge_to_hdmi(bridge); + + /* Store the display mode for plugin/DPMS poweron events */ + memcpy(&hdmi->previous_mode, adj_mode, sizeof(hdmi->previous_mode)); +} + +static void rk618_hdmi_bridge_enable(struct drm_bridge *bridge) +{ + struct rk618_hdmi *hdmi = bridge_to_hdmi(bridge); + + clk_prepare_enable(hdmi->clock); + + rk618_hdmi_setup(hdmi, &hdmi->previous_mode); + rk618_hdmi_set_polarity(hdmi, hdmi->hdmi_data.vic); + rk618_hdmi_set_pwr_mode(hdmi, NORMAL); +} + +static void rk618_hdmi_bridge_disable(struct drm_bridge *bridge) +{ + struct rk618_hdmi *hdmi = bridge_to_hdmi(bridge); + + rk618_hdmi_set_pwr_mode(hdmi, LOWER_PWR); + + clk_disable_unprepare(hdmi->clock); +} + +static int rk618_hdmi_bridge_attach(struct drm_bridge *bridge) +{ + struct rk618_hdmi *hdmi = bridge_to_hdmi(bridge); + struct device *dev = hdmi->dev; + struct drm_connector *connector = &hdmi->connector; + struct drm_device *drm = bridge->dev; + struct device_node *endpoint; + int ret; + + connector->polled = DRM_CONNECTOR_POLL_HPD; + connector->port = dev->of_node; + + ret = drm_connector_init(drm, connector, &rk618_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA); + if (ret) { + dev_err(hdmi->dev, "Failed to initialize connector with drm\n"); + return ret; + } + + drm_connector_helper_add(connector, + &rk618_hdmi_connector_helper_funcs); + drm_mode_connector_attach_encoder(connector, bridge->encoder); + + endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1); + if (endpoint && of_device_is_available(endpoint)) { + struct device_node *remote; + + remote = of_graph_get_remote_port_parent(endpoint); + of_node_put(endpoint); + if (!remote || !of_device_is_available(remote)) + return -ENODEV; + + hdmi->bridge = of_drm_find_bridge(remote); + of_node_put(remote); + if (!hdmi->bridge) + return -EPROBE_DEFER; + + hdmi->bridge->encoder = bridge->encoder; + + ret = drm_bridge_attach(bridge->dev, hdmi->bridge); + if (ret) { + dev_err(dev, "failed to attach bridge\n"); + return ret; + } + + bridge->next = hdmi->bridge; + } + + return 0; +} + +static const struct drm_bridge_funcs rk618_hdmi_bridge_funcs = { + .attach = rk618_hdmi_bridge_attach, + .mode_set = rk618_hdmi_bridge_mode_set, + .enable = rk618_hdmi_bridge_enable, + .disable = rk618_hdmi_bridge_disable, +}; + +static int +rk618_hdmi_audio_config_set(struct rk618_hdmi *hdmi, struct audio_info *audio) +{ + int rate, N, channel; + + if (audio->channels < 3) + channel = I2S_CHANNEL_1_2; + else if (audio->channels < 5) + channel = I2S_CHANNEL_3_4; + else if (audio->channels < 7) + channel = I2S_CHANNEL_5_6; + else + channel = I2S_CHANNEL_7_8; + + switch (audio->sample_rate) { + case 32000: + rate = AUDIO_32K; + N = N_32K; + break; + case 44100: + rate = AUDIO_441K; + N = N_441K; + break; + case 48000: + rate = AUDIO_48K; + N = N_48K; + break; + case 88200: + rate = AUDIO_882K; + N = N_882K; + break; + case 96000: + rate = AUDIO_96K; + N = N_96K; + break; + case 176400: + rate = AUDIO_1764K; + N = N_1764K; + break; + case 192000: + rate = AUDIO_192K; + N = N_192K; + break; + default: + dev_err(hdmi->dev, "[%s] not support such sample rate %d\n", + __func__, audio->sample_rate); + return -ENOENT; + } + + /* set_audio source I2S */ + hdmi_writeb(hdmi, HDMI_AUDIO_CTRL1, 0x01); + hdmi_writeb(hdmi, AUDIO_SAMPLE_RATE, rate); + hdmi_writeb(hdmi, AUDIO_I2S_MODE, v_I2S_MODE(I2S_STANDARD) | + v_I2S_CHANNEL(channel)); + + hdmi_writeb(hdmi, AUDIO_I2S_MAP, 0x00); + hdmi_writeb(hdmi, AUDIO_I2S_SWAPS_SPDIF, 0); + + /* Set N value */ + hdmi_writeb(hdmi, AUDIO_N_H, (N >> 16) & 0x0F); + hdmi_writeb(hdmi, AUDIO_N_M, (N >> 8) & 0xFF); + hdmi_writeb(hdmi, AUDIO_N_L, N & 0xFF); + + /*Set hdmi nlpcm mode to support hdmi bitstream*/ + hdmi_writeb(hdmi, HDMI_AUDIO_CHANNEL_STATUS, v_AUDIO_STATUS_NLPCM(0)); + + return rk618_hdmi_config_audio_aai(hdmi, audio); +} + +static int rk618_hdmi_audio_hw_params(struct device *dev, void *d, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct rk618_hdmi *hdmi = dev_get_drvdata(dev); + struct audio_info audio = { + .sample_width = params->sample_width, + .sample_rate = params->sample_rate, + .channels = params->channels, + }; + + if (!hdmi->hdmi_data.sink_has_audio) { + dev_err(hdmi->dev, "Sink do not support audio!\n"); + return -ENODEV; + } + + if (!hdmi->base.encoder->crtc) + return -ENODEV; + + switch (daifmt->fmt) { + case HDMI_I2S: + break; + default: + dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt); + return -EINVAL; + } + + return rk618_hdmi_audio_config_set(hdmi, &audio); +} + +static void rk618_hdmi_audio_shutdown(struct device *dev, void *d) +{ + /* do nothing */ +} + +static int rk618_hdmi_audio_digital_mute(struct device *dev, void *d, bool mute) +{ + struct rk618_hdmi *hdmi = dev_get_drvdata(dev); + + if (!hdmi->hdmi_data.sink_has_audio) { + dev_err(hdmi->dev, "Sink do not support audio!\n"); + return -ENODEV; + } + + hdmi->audio_enable = !mute; + + if (mute) + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_AUDIO_PD, + v_AUDIO_MUTE(1) | v_AUDIO_PD(1)); + else + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_AUDIO_PD, + v_AUDIO_MUTE(0) | v_AUDIO_PD(0)); + + return 0; +} + +static int rk618_hdmi_audio_get_eld(struct device *dev, void *d, + uint8_t *buf, size_t len) +{ + struct rk618_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_mode_config *config = &hdmi->base.dev->mode_config; + struct drm_connector *connector; + int ret = -ENODEV; + + mutex_lock(&config->mutex); + list_for_each_entry(connector, &config->connector_list, head) { + if (hdmi->base.encoder == connector->encoder) { + memcpy(buf, connector->eld, + min(sizeof(connector->eld), len)); + ret = 0; + } + } + mutex_unlock(&config->mutex); + + return ret; +} + +static const struct hdmi_codec_ops audio_codec_ops = { + .hw_params = rk618_hdmi_audio_hw_params, + .audio_shutdown = rk618_hdmi_audio_shutdown, + .digital_mute = rk618_hdmi_audio_digital_mute, + .get_eld = rk618_hdmi_audio_get_eld, +}; + +static int rk618_hdmi_audio_codec_init(struct rk618_hdmi *hdmi, + struct device *dev) +{ + struct hdmi_codec_pdata codec_data = { + .i2s = 1, + .ops = &audio_codec_ops, + .max_i2s_channels = 8, + }; + + hdmi->audio_enable = false; + hdmi->audio_pdev = platform_device_register_data(dev, + HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_NONE, + &codec_data, sizeof(codec_data)); + + return PTR_ERR_OR_ZERO(hdmi->audio_pdev); +} + +static irqreturn_t rk618_hdmi_irq(int irq, void *dev_id) +{ + struct rk618_hdmi *hdmi = dev_id; + + hdmi_modb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_HOTPLUG_RK618, + m_INT_HOTPLUG_RK618); + + if (hdmi->connector.dev) + drm_helper_hpd_irq_event(hdmi->connector.dev); + + return IRQ_HANDLED; +} + +static int rk618_hdmi_i2c_read(struct rk618_hdmi *hdmi, struct i2c_msg *msgs) +{ + int length = msgs->len; + u8 *buf = msgs->buf; + int i; + u32 c; + + for (i = 0; i < 10; i++) { + msleep(20); + c = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1); + + if (c & m_INT_EDID_READY) + break; + } + if ((c & m_INT_EDID_READY) == 0) + return -EAGAIN; + + while (length--) + *buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR); + + return 0; +} + +static int rk618_hdmi_i2c_write(struct rk618_hdmi *hdmi, struct i2c_msg *msgs) +{ + /* + * The DDC module only support read EDID message, so + * we assume that each word write to this i2c adapter + * should be the offset of EDID word address. + */ + if ((msgs->len != 1) || + ((msgs->addr != DDC_ADDR) && (msgs->addr != DDC_SEGMENT_ADDR))) + return -EINVAL; + + if (msgs->addr == DDC_SEGMENT_ADDR) + hdmi->i2c->segment_addr = msgs->buf[0]; + if (msgs->addr == DDC_ADDR) + hdmi->i2c->ddc_addr = msgs->buf[0]; + + /* Set edid fifo first addr */ + hdmi_writeb(hdmi, HDMI_EDID_FIFO_OFFSET, 0x00); + + /* Set edid word address 0x00/0x80 */ + hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr); + + /* Set edid segment pointer */ + hdmi_writeb(hdmi, HDMI_EDID_SEGMENT_POINTER, hdmi->i2c->segment_addr); + + return 0; +} + +static int rk618_hdmi_i2c_xfer(struct i2c_adapter *adap, + struct i2c_msg *msgs, int num) +{ + struct rk618_hdmi *hdmi = i2c_get_adapdata(adap); + struct rk618_hdmi_i2c *i2c = hdmi->i2c; + int i, ret = 0; + + mutex_lock(&i2c->lock); + + /* Clear the EDID interrupt flag and unmute the interrupt */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_EDID_READY); + hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY); + + for (i = 0; i < num; i++) { + dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n", + i + 1, num, msgs[i].len, msgs[i].flags); + + if (msgs[i].flags & I2C_M_RD) + ret = rk618_hdmi_i2c_read(hdmi, &msgs[i]); + else + ret = rk618_hdmi_i2c_write(hdmi, &msgs[i]); + + if (ret < 0) + break; + } + + if (!ret) + ret = num; + + /* Mute HDMI EDID interrupt */ + hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0); + hdmi_modb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_HOTPLUG_RK618, + m_INT_HOTPLUG_RK618); + + mutex_unlock(&i2c->lock); + + return ret; +} + +static u32 rk618_hdmi_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm rk618_hdmi_algorithm = { + .master_xfer = rk618_hdmi_i2c_xfer, + .functionality = rk618_hdmi_i2c_func, +}; + +static struct i2c_adapter *rk618_hdmi_i2c_adapter(struct rk618_hdmi *hdmi) +{ + struct i2c_adapter *adap; + struct rk618_hdmi_i2c *i2c; + int ret; + + i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL); + if (!i2c) + return ERR_PTR(-ENOMEM); + + mutex_init(&i2c->lock); + + adap = &i2c->adap; + adap->class = I2C_CLASS_DDC; + adap->owner = THIS_MODULE; + adap->dev.parent = hdmi->dev; + adap->dev.of_node = hdmi->dev->of_node; + adap->algo = &rk618_hdmi_algorithm; + strlcpy(adap->name, "RK618 HDMI", sizeof(adap->name)); + i2c_set_adapdata(adap, hdmi); + + ret = i2c_add_adapter(adap); + if (ret) { + dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name); + devm_kfree(hdmi->dev, i2c); + return ERR_PTR(ret); + } + + hdmi->i2c = i2c; + + dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name); + + return adap; +} + +static const struct regmap_range rk618_hdmi_volatile_reg_ranges[] = { + regmap_reg_range(0x0400, 0x07b4), +}; + +static const struct regmap_access_table rk618_hdmi_volatile_regs = { + .yes_ranges = rk618_hdmi_volatile_reg_ranges, + .n_yes_ranges = ARRAY_SIZE(rk618_hdmi_volatile_reg_ranges), +}; + +static bool rk618_is_read_enable_reg(struct device *dev, unsigned int reg) +{ + if (reg >= RK618_HDMI_BASE && + reg <= (HDMI_CEC_LOGICADDR * RK618_HDMI_BASE)) + return true; + + return false; +} + +static const struct regmap_config rk618_hdmi_regmap_config = { + .name = "hdmi", + .reg_bits = 16, + .val_bits = 32, + .reg_stride = 4, + .max_register = 0x07b4, + .cache_type = REGCACHE_RBTREE, + .reg_format_endian = REGMAP_ENDIAN_NATIVE, + .val_format_endian = REGMAP_ENDIAN_NATIVE, + .readable_reg = rk618_is_read_enable_reg, + .volatile_table = &rk618_hdmi_volatile_regs, +}; + +static int rk618_hdmi_probe(struct platform_device *pdev) +{ + struct rk618 *rk618 = dev_get_drvdata(pdev->dev.parent); + struct device *dev = &pdev->dev; + struct rk618_hdmi *hdmi; + int irq; + int ret; + + if (!of_device_is_available(dev->of_node)) + return -ENODEV; + + hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); + if (!hdmi) + return -ENOMEM; + + hdmi->dev = dev; + hdmi->parent = rk618; + platform_set_drvdata(pdev, hdmi); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + hdmi->regmap = devm_regmap_init_i2c(rk618->client, + &rk618_hdmi_regmap_config); + if (IS_ERR(hdmi->regmap)) { + ret = PTR_ERR(hdmi->regmap); + dev_err(dev, "failed to allocate register map: %d\n", ret); + return PTR_ERR(hdmi->regmap); + } + + hdmi->clock = devm_clk_get(dev, "hdmi"); + if (IS_ERR(hdmi->clock)) { + dev_err(dev, "Unable to get HDMI clock\n"); + return PTR_ERR(hdmi->clock); + } + + rk618_hdmi_pol_init(hdmi, 0); + rk618_hdmi_reset(hdmi); + + hdmi->ddc = rk618_hdmi_i2c_adapter(hdmi); + if (IS_ERR(hdmi->ddc)) { + ret = PTR_ERR(hdmi->ddc); + hdmi->ddc = NULL; + return ret; + } + + /* + * When IP controller haven't configured to an accurate video + * timing, then the TMDS clock source would be switched to + * PCLK_HDMI, so we need to init the TMDS rate to PCLK rate, + * and reconfigure the DDC clock. + */ + hdmi->tmds_rate = clk_get_rate(rk618->clkin); + + rk618_hdmi_i2c_init(hdmi); + rk618_hdmi_audio_codec_init(hdmi, dev); + + /* Unmute hotplug interrupt */ + hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1)); + hdmi_modb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_HOTPLUG_RK618, + m_INT_HOTPLUG_RK618); + + ret = devm_request_threaded_irq(dev, irq, NULL, + rk618_hdmi_irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + dev_name(dev), hdmi); + if (ret) { + dev_err(dev, "failed to request hdmi irq: %d\n", ret); + return ret; + } + + hdmi->base.funcs = &rk618_hdmi_bridge_funcs; + hdmi->base.of_node = dev->of_node; + ret = drm_bridge_add(&hdmi->base); + if (ret) { + dev_err(dev, "failed to add drm_bridge: %d\n", ret); + return ret; + } + + return 0; +} + +static int rk618_hdmi_remove(struct platform_device *pdev) +{ + struct rk618_hdmi *hdmi = platform_get_drvdata(pdev); + + drm_bridge_remove(&hdmi->base); + i2c_put_adapter(hdmi->ddc); + + return 0; +} + +static const struct of_device_id rk618_hdmi_dt_ids[] = { + { .compatible = "rockchip,rk618-hdmi", }, + {}, +}; +MODULE_DEVICE_TABLE(of, rk618_hdmi_dt_ids); + +static struct platform_driver rk618_hdmi_driver = { + .probe = rk618_hdmi_probe, + .remove = rk618_hdmi_remove, + .driver = { + .name = "rk618-hdmi", + .of_match_table = rk618_hdmi_dt_ids, + }, +}; + +module_platform_driver(rk618_hdmi_driver); + +MODULE_AUTHOR("Chen Shunqing "); +MODULE_AUTHOR("Zheng Yang "); +MODULE_AUTHOR("Yakir Yang "); +MODULE_DESCRIPTION("Rockchip RK618 HDMI driver"); +MODULE_LICENSE("GPL v2");