// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2020 Rockchip Electronics Co. Ltd. * * Author: Chen Shunqing */ #include "rk628.h" #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_SWITCH #include #endif #include #include #include #include #include #include "../../gpu/drm/rockchip/rockchip_drm_drv.h" #include "rk628_config.h" #include "rk628_hdmitx.h" #include "rk628_post_process.h" #include #include 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 rk628_hdmi_i2c { struct i2c_adapter adap; u8 ddc_addr; u8 segment_addr; /* i2c lock */ struct mutex lock; }; struct rk628_hdmi_phy_config { unsigned long mpixelclock; u8 pre_emphasis; /* pre-emphasis value */ u8 vlev_ctr; /* voltage level control */ }; struct rk628_hdmi { struct rk628 *rk628; struct device *dev; int irq; struct drm_bridge bridge; struct drm_connector connector; struct rk628_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; struct rockchip_drm_sub_dev sub_dev; struct extcon_dev *extcon; }; static const unsigned int rk628_hdmi_cable[] = { EXTCON_DISP_HDMI, EXTCON_NONE, }; 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 rk628_hdmi *bridge_to_hdmi(struct drm_bridge *b) { return container_of(b, struct rk628_hdmi, bridge); } static inline struct rk628_hdmi *connector_to_hdmi(struct drm_connector *c) { return container_of(c, struct rk628_hdmi, connector); } static u32 hdmi_readb(struct rk628_hdmi *hdmi, u32 reg) { u32 val; rk628_i2c_read(hdmi->rk628, reg, &val); return val; } static void hdmi_writeb(struct rk628_hdmi *hdmi, u32 reg, u32 val) { rk628_i2c_write(hdmi->rk628, reg, val); } static void hdmi_modb(struct rk628_hdmi *hdmi, u32 offset, u32 msk, u32 val) { u8 temp = hdmi_readb(hdmi, offset) & ~msk; temp |= val & msk; hdmi_writeb(hdmi, offset, temp); } static void rk628_hdmi_i2c_init(struct rk628_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, INT_EDID_READY); } static void rk628_hdmi_sys_power(struct rk628_hdmi *hdmi, bool enable) { if (enable) hdmi_modb(hdmi, HDMI_SYS_CTRL, POWER_MASK, PWR_OFF(0)); else hdmi_modb(hdmi, HDMI_SYS_CTRL, POWER_MASK, PWR_OFF(1)); } static struct rk628_hdmi_phy_config rk628_hdmi_phy_config[] = { /* pixelclk pre-emp vlev */ { 74250000, 0x3f, 0x88 }, { 165000000, 0x3f, 0x88 }, { ~0UL, 0x00, 0x00 } }; static void rk628_hdmi_set_pwr_mode(struct rk628_hdmi *hdmi, int mode) { const struct rk628_hdmi_phy_config *phy_config = rk628_hdmi_phy_config; switch (mode) { case NORMAL: rk628_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, 0x15); hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14); hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10); hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f); hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00); hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01); rk628_hdmi_sys_power(hdmi, true); break; case LOWER_PWR: rk628_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, 0x15); break; default: dev_err(hdmi->dev, "Unknown power mode %d\n", mode); } } static void rk628_hdmi_reset(struct rk628_hdmi *hdmi) { u32 val; u32 msk; hdmi_modb(hdmi, HDMI_SYS_CTRL, RST_DIGITAL_MASK, NOT_RST_DIGITAL(1)); usleep_range(100, 110); hdmi_modb(hdmi, HDMI_SYS_CTRL, RST_ANALOG_MASK, NOT_RST_ANALOG(1)); usleep_range(100, 110); msk = REG_CLK_INV_MASK | REG_CLK_SOURCE_MASK | POWER_MASK | INT_POL_MASK; val = REG_CLK_INV(1) | REG_CLK_SOURCE(1) | PWR_OFF(0) | INT_POL(1); hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val); rk628_hdmi_set_pwr_mode(hdmi, NORMAL); } static int rk628_hdmi_upload_frame(struct rk628_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 * 4), packed_frame[i]); if (mask) hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, enable); } return setup_rc; } static int rk628_hdmi_config_video_vsi(struct rk628_hdmi *hdmi, struct drm_display_mode *mode) { union hdmi_infoframe frame; int rc; rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi, &hdmi->connector, mode); return rk628_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_VSI, PACKET_VSI_EN_MASK, PACKET_VSI_EN(0), PACKET_VSI_EN(1)); } static int rk628_hdmi_config_video_avi(struct rk628_hdmi *hdmi, struct drm_display_mode *mode) { union hdmi_infoframe frame; int rc; rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, &hdmi->connector, mode); 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 rk628_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0); } static int rk628_hdmi_config_audio_aai(struct rk628_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 rk628_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AAI, 0, 0, 0); } static int rk628_hdmi_config_video_csc(struct rk628_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; int out_fmt; /* Input video mode is SDR RGB24bit, data enable signal from external */ hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL1, DE_SOURCE(1) | VIDEO_INPUT_SDR_RGB444); if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444) out_fmt = VIDEO_OUTPUT_YCBCR444; else out_fmt = VIDEO_OUTPUT_RRGB444; /* Input color hardcode to RGB, and output color hardcode to RGB888 */ value = VIDEO_INPUT_8BITS | out_fmt | 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 = SOF_DISABLE(1) | COLOR_DEPTH_NOT_INDICATED(1); hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL3, value); hdmi_modb(hdmi, HDMI_VIDEO_CONTROL, VIDEO_AUTO_CSC_MASK | VIDEO_C0_C2_SWAP_MASK, VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) | 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 = CSC_ENABLE(1); } 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 = CSC_ENABLE(0); } } 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 = CSC_ENABLE(1); } 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 = CSC_ENABLE(0); } } for (i = 0; i < 24; i++) hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + (i * 4), coeff_csc[csc_mode][i]); value = SOF_DISABLE(1) | csc_enable | COLOR_DEPTH_NOT_INDICATED(1); hdmi_writeb(hdmi, HDMI_VIDEO_CONTROL3, value); hdmi_modb(hdmi, HDMI_VIDEO_CONTROL, VIDEO_AUTO_CSC_MASK | VIDEO_C0_C2_SWAP_MASK, VIDEO_AUTO_CSC(auto_csc) | VIDEO_C0_C2_SWAP(c0_c2_change)); return 0; } static int rk628_hdmi_config_video_timing(struct rk628_hdmi *hdmi, struct drm_display_mode *mode) { int value; /* Set detail external video timing polarity and interlace mode */ value = EXTERANL_VIDEO(1); value |= mode->flags & DRM_MODE_FLAG_PHSYNC ? HSYNC_POLARITY(1) : HSYNC_POLARITY(0); value |= mode->flags & DRM_MODE_FLAG_PVSYNC ? VSYNC_POLARITY(1) : VSYNC_POLARITY(0); value |= mode->flags & DRM_MODE_FLAG_INTERLACE ? INETLACE(1) : 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, PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c); hdmi_writeb(hdmi, PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01); return 0; } static int rk628_hdmi_setup(struct rk628_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, AUDIO_MUTE_MASK | VIDEO_BLACK_MASK, AUDIO_MUTE(1) | VIDEO_MUTE(1)); /* Set HDMI Mode */ hdmi_writeb(hdmi, HDMI_HDCP_CTRL, HDMI_DVI(hdmi->hdmi_data.sink_is_hdmi)); rk628_hdmi_config_video_timing(hdmi, mode); rk628_hdmi_config_video_csc(hdmi); if (hdmi->hdmi_data.sink_is_hdmi) { rk628_hdmi_config_video_avi(hdmi, mode); rk628_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; rk628_hdmi_i2c_init(hdmi); /* Unmute video and audio output */ hdmi_modb(hdmi, HDMI_AV_MUTE, VIDEO_BLACK_MASK, VIDEO_MUTE(0)); if (hdmi->audio_enable) hdmi_modb(hdmi, HDMI_AV_MUTE, AUDIO_MUTE_MASK, AUDIO_MUTE(0)); return 0; } static enum drm_connector_status rk628_hdmi_connector_detect(struct drm_connector *connector, bool force) { struct rk628_hdmi *hdmi = connector_to_hdmi(connector); int status; status = hdmi_readb(hdmi, HDMI_STATUS) & HOTPLUG_STATUS; if (status) extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, true); else extcon_set_state_sync(hdmi->extcon, EXTCON_DISP_HDMI, false); return status ? connector_status_connected : connector_status_disconnected; } static int rk628_hdmi_connector_get_modes(struct drm_connector *connector) { struct rk628_hdmi *hdmi = connector_to_hdmi(connector); struct drm_display_info *info = &connector->display_info; struct edid *edid = NULL; int ret = 0; if (!hdmi->ddc) return 0; if ((hdmi_readb(hdmi, HDMI_STATUS) & HOTPLUG_STATUS)) 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_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; ret = rockchip_drm_add_modes_noedid(connector); 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 rk628_hdmi_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { if ((mode->hdisplay == 1920 && mode->vdisplay == 1080) || (mode->hdisplay == 1280 && mode->vdisplay == 720)) return MODE_OK; else return MODE_BAD; } static struct drm_encoder * rk628_hdmi_connector_best_encoder(struct drm_connector *connector) { struct rk628_hdmi *hdmi = connector_to_hdmi(connector); return hdmi->bridge.encoder; } static int rk628_hdmi_probe_single_connector_modes(struct drm_connector *connector, u32 maxX, u32 maxY) { return drm_helper_probe_single_connector_modes(connector, 1920, 1080); } static const struct drm_connector_funcs rk628_hdmi_connector_funcs = { .fill_modes = rk628_hdmi_probe_single_connector_modes, .detect = rk628_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 rk628_hdmi_connector_helper_funcs = { .get_modes = rk628_hdmi_connector_get_modes, .mode_valid = rk628_hdmi_connector_mode_valid, .best_encoder = rk628_hdmi_connector_best_encoder, }; static void rk628_hdmi_bridge_mode_set(struct drm_bridge *bridge, const struct drm_display_mode *mode, const struct drm_display_mode *adj_mode) { struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge); struct rk628 *rk628 = hdmi->rk628; struct rk628_display_mode *src = rk628_display_get_src_mode(rk628); struct rk628_display_mode *dst = rk628_display_get_dst_mode(rk628); /* Store the display mode for plugin/DPMS poweron events */ memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode)); dst->clock = mode->clock; dst->hdisplay = mode->hdisplay; dst->hsync_start = mode->hsync_start; dst->hsync_end = mode->hsync_end; dst->htotal = mode->htotal; dst->vdisplay = mode->vdisplay; dst->vsync_start = mode->vsync_start; dst->vsync_end = mode->vsync_end; dst->vtotal = mode->vtotal; dst->flags = mode->flags; rk628_mode_copy(src, dst); } static bool rk628_hdmi_bridge_mode_fixup(struct drm_bridge *bridge, const struct drm_display_mode *mode, struct drm_display_mode *adj) { struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge); struct rk628 *rk628 = hdmi->rk628; if (rk628->sync_pol == MODE_FLAG_NSYNC) { adj->flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); adj->flags |= (DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); } else { adj->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); adj->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); } return true; } static void rk628_hdmi_bridge_enable(struct drm_bridge *bridge) { struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge); rk628_post_process_init(hdmi->rk628); rk628_post_process_enable(hdmi->rk628); rk628_hdmi_setup(hdmi, &hdmi->previous_mode); rk628_hdmi_set_pwr_mode(hdmi, NORMAL); } static void rk628_hdmi_bridge_disable(struct drm_bridge *bridge) { struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge); rk628_hdmi_set_pwr_mode(hdmi, LOWER_PWR); } static int rk628_hdmi_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge); struct drm_connector *connector = &hdmi->connector; struct drm_device *drm = bridge->dev; int ret; if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) return 0; connector->polled = DRM_CONNECTOR_POLL_HPD; ret = drm_connector_init(drm, connector, &rk628_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, &rk628_hdmi_connector_helper_funcs); drm_connector_attach_encoder(connector, bridge->encoder); hdmi->sub_dev.connector = &hdmi->connector; hdmi->sub_dev.of_node = hdmi->dev->of_node; rockchip_drm_register_sub_dev(&hdmi->sub_dev); return 0; } static void rk628_hdmi_bridge_detach(struct drm_bridge *bridge) { struct rk628_hdmi *hdmi = bridge_to_hdmi(bridge); rockchip_drm_unregister_sub_dev(&hdmi->sub_dev); } static const struct drm_bridge_funcs rk628_hdmi_bridge_funcs = { .attach = rk628_hdmi_bridge_attach, .detach = rk628_hdmi_bridge_detach, .mode_set = rk628_hdmi_bridge_mode_set, .mode_fixup = rk628_hdmi_bridge_mode_fixup, .enable = rk628_hdmi_bridge_enable, .disable = rk628_hdmi_bridge_disable, }; static int rk628_hdmi_audio_config_set(struct rk628_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, I2S_MODE(I2S_STANDARD) | 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, AUDIO_STATUS_NLPCM(0)); return rk628_hdmi_config_audio_aai(hdmi, audio); } static int rk628_hdmi_audio_hw_params(struct device *dev, void *d, struct hdmi_codec_daifmt *daifmt, struct hdmi_codec_params *params) { struct rk628_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->bridge.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 rk628_hdmi_audio_config_set(hdmi, &audio); } static void rk628_hdmi_audio_shutdown(struct device *dev, void *d) { /* do nothing */ } static int rk628_hdmi_audio_mute(struct device *dev, void *d, bool mute, int direction) { struct rk628_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, AUDIO_MUTE_MASK | AUDIO_PD_MASK, AUDIO_MUTE(1) | AUDIO_PD(1)); else hdmi_modb(hdmi, HDMI_AV_MUTE, AUDIO_MUTE_MASK | AUDIO_PD_MASK, AUDIO_MUTE(0) | AUDIO_PD(0)); return 0; } static int rk628_hdmi_audio_get_eld(struct device *dev, void *d, u8 *buf, size_t len) { struct rk628_hdmi *hdmi = dev_get_drvdata(dev); struct drm_mode_config *config = &hdmi->bridge.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->bridge.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 = rk628_hdmi_audio_hw_params, .audio_shutdown = rk628_hdmi_audio_shutdown, .mute_stream = rk628_hdmi_audio_mute, .no_capture_mute = 1, .get_eld = rk628_hdmi_audio_get_eld, }; static int rk628_hdmi_audio_codec_init(struct rk628_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 rk628_hdmi_irq(int irq, void *dev_id) { struct rk628_hdmi *hdmi = dev_id; u8 interrupt; /* clear interrupts */ rk628_i2c_write(hdmi->rk628, GRF_INTR0_CLR_EN, 0x00040004); interrupt = hdmi_readb(hdmi, HDMI_STATUS); if (!(interrupt & INT_HOTPLUG)) return IRQ_HANDLED; hdmi_modb(hdmi, HDMI_STATUS, INT_HOTPLUG, INT_HOTPLUG); if (hdmi->connector.dev) drm_helper_hpd_irq_event(hdmi->connector.dev); return IRQ_HANDLED; } static int rk628_hdmi_i2c_read(struct rk628_hdmi *hdmi, struct i2c_msg *msgs) { int length = msgs->len; u8 *buf = msgs->buf; int i; u32 c; for (i = 0; i < 5; i++) { msleep(20); c = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1); if (c & INT_EDID_READY) break; } if ((c & INT_EDID_READY) == 0) return -EAGAIN; while (length--) *buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR); return 0; } static int rk628_hdmi_i2c_write(struct rk628_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_ADDR) hdmi->i2c->ddc_addr = msgs->buf[0]; if (msgs->addr == DDC_SEGMENT_ADDR) { hdmi->i2c->segment_addr = msgs->buf[0]; return 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 rk628_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) { struct rk628_hdmi *hdmi = i2c_get_adapdata(adap); struct rk628_hdmi_i2c *i2c = hdmi->i2c; int i, ret = 0; mutex_lock(&i2c->lock); hdmi->i2c->ddc_addr = 0; hdmi->i2c->segment_addr = 0; /* Clear the EDID interrupt flag and unmute the interrupt */ hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, INT_EDID_READY); hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, INT_EDID_READY_MASK); 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 = rk628_hdmi_i2c_read(hdmi, &msgs[i]); else ret = rk628_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_writeb(hdmi, HDMI_INTERRUPT_STATUS1, INT_EDID_READY); mutex_unlock(&i2c->lock); return ret; } static u32 rk628_hdmi_i2c_func(struct i2c_adapter *adapter) { return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; } static const struct i2c_algorithm rk628_hdmi_algorithm = { .master_xfer = rk628_hdmi_i2c_xfer, .functionality = rk628_hdmi_i2c_func, }; static struct i2c_adapter *rk628_hdmi_i2c_adapter(struct rk628_hdmi *hdmi) { struct i2c_adapter *adap; struct rk628_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 = &rk628_hdmi_algorithm; strscpy(adap->name, "RK628 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; } int rk628_hdmitx_enable(struct rk628 *rk628) { struct device *dev = rk628->dev; struct rk628_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->rk628 = rk628; irq = rk628->client->irq; if (irq < 0) return irq; dev_set_drvdata(dev, hdmi); /* selete int io function */ rk628_i2c_write(rk628, GRF_GPIO0AB_SEL_CON, 0x70007000); rk628_i2c_write(rk628, GRF_GPIO0AB_SEL_CON, 0x055c055c); /* hdmitx vclk pllref select Pin_vclk */ rk628_i2c_update_bits(rk628, GRF_POST_PROC_CON, SW_HDMITX_VCLK_PLLREF_SEL_MASK, SW_HDMITX_VCLK_PLLREF_SEL(1)); /* set output mode to HDMI */ rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0, SW_OUTPUT_MODE_MASK, SW_OUTPUT_MODE(OUTPUT_MODE_HDMI)); rk628_hdmi_reset(hdmi); hdmi->ddc = rk628_hdmi_i2c_adapter(hdmi); if (IS_ERR(hdmi->ddc)) { ret = PTR_ERR(hdmi->ddc); hdmi->ddc = NULL; goto fail; } /* * 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 = 24000 * 1000; /* hdmitx int en */ rk628_i2c_write(rk628, GRF_INTR0_EN, 0x00040004); rk628_hdmi_i2c_init(hdmi); rk628_hdmi_audio_codec_init(hdmi, dev); ret = devm_request_threaded_irq(dev, irq, NULL, rk628_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, dev_name(dev), hdmi); if (ret) { dev_err(dev, "failed to request hdmi irq: %d\n", ret); goto fail; } /* Unmute hotplug interrupt */ hdmi_modb(hdmi, HDMI_STATUS, MASK_INT_HOTPLUG_MASK, MASK_INT_HOTPLUG(1)); hdmi->bridge.funcs = &rk628_hdmi_bridge_funcs; hdmi->bridge.of_node = dev->of_node; drm_bridge_add(&hdmi->bridge); hdmi->extcon = devm_extcon_dev_allocate(hdmi->dev, rk628_hdmi_cable); if (IS_ERR(hdmi->extcon)) { dev_err(hdmi->dev, "allocate extcon failed\n"); ret = PTR_ERR(hdmi->extcon); goto fail; } ret = devm_extcon_dev_register(hdmi->dev, hdmi->extcon); if (ret) { dev_err(dev, "failed to register extcon: %d\n", ret); goto fail; } ret = extcon_set_property_capability(hdmi->extcon, EXTCON_DISP_HDMI, EXTCON_PROP_DISP_HPD); if (ret) { dev_err(dev, "failed to set USB property capability: %d\n", ret); goto fail; } return 0; fail: return ret; } MODULE_AUTHOR("Chen Shunqing "); MODULE_DESCRIPTION("Rockchip RK628 HDMI driver"); MODULE_LICENSE("GPL");