/* * tc358840.c - Toshiba UH2C/D HDMI-CSI bridge driver * * Copyright (c) 2015, Armin Weiss * Copyright (c) 2016 - 2021, NVIDIA CORPORATION. All rights reserved. * * This program is based on the tc358840 - Toshiba HDMI to CSI-2 bridge driver * from Cisco Systems, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_V4L2_FWNODE #include #else #include #endif #include #include #include #include "tc358840_regs.h" #include #define MAX_DATABUF 10 static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "debug level (0-3)"); /* TODO: Implement Colorbar TPG */ #define EDID_NUM_BLOCKS_MAX 8 #define EDID_BLOCK_SIZE 128 #define DELAY_ENABLE_INTERRUPT_MS 10000 static u8 edid[] = { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x52, 0x62, 0x88, 0x88, 0x00, 0x88, 0x88, 0x88, 0x1C, 0x15, 0x01, 0x03, 0x80, 0x00, 0x00, 0x78, 0x0A, 0x0D, 0xC9, 0xA0, 0x57, 0x47, 0x98, 0x27, 0x12, 0x48, 0x4C, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0xEC, 0x68, 0x00, 0xA0, 0xF0, 0x70, 0x37, 0x80, 0x30, 0x20, 0x3A, 0x00, 0x00, 0x70, 0xF8, 0x00, 0x00, 0x1C, 0x02, 0x3A, 0x80, 0x18, 0x71, 0x38, 0x2D, 0x40, 0x58, 0x2C, 0x45, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x54, 0x6F, 0x73, 0x68, 0x69, 0x62, 0x61, 0x2D, 0x55, 0x48, 0x32, 0x44, 0x0A, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x17, 0x3D, 0x0F, 0x8C, 0x17, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xAF, 0x02, 0x03, 0x1A, 0x74, 0x47, 0x32, 0x10, 0x04, 0x32, 0x32, 0x32, 0x32, 0x23, 0x09, 0x07, 0x01, 0x83, 0x01, 0x00, 0x00, 0x65, 0x03, 0x0C, 0x00, 0x10, 0x00, 0x01, 0x1D, 0x00, 0x72, 0x51, 0xD0, 0x1E, 0x20, 0x6E, 0x28, 0x55, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0xEC, 0x68, 0x00, 0xA0, 0xF0, 0x70, 0x37, 0x80, 0x30, 0x20, 0x3A, 0x00, 0x00, 0x70, 0xF8, 0x00, 0x00, 0x1C, 0xEC, 0x68, 0x00, 0xA0, 0xF0, 0x70, 0x37, 0x80, 0x30, 0x20, 0x3A, 0x00, 0x00, 0x70, 0xF8, 0x00, 0x00, 0x1C, 0xEC, 0x68, 0x00, 0xA0, 0xF0, 0x70, 0x37, 0x80, 0x30, 0x20, 0x3A, 0x00, 0x00, 0x70, 0xF8, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, }; static const struct v4l2_dv_timings_cap tc358840_timings_cap = { .type = V4L2_DV_BT_656_1120, /* keep this initialization for compatibility with GCC < 4.4.6 */ .reserved = { 0 }, /* Pixel clock from REF_01 p. 20. Min/max height/width are unknown */ V4L2_INIT_BT_TIMINGS( 1, 10000, 1, 10000, 0, 297000000, V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM) }; struct tc358840_state { struct tc358840_platform_data pdata; struct v4l2_subdev sd; struct media_pad pad[2]; struct v4l2_ctrl_handler hdl; struct i2c_client *i2c_client; bool enabled; bool format_changed; /* controls */ struct v4l2_ctrl *detect_tx_5v_ctrl; struct v4l2_ctrl *audio_sampling_rate_ctrl; struct v4l2_ctrl *audio_present_ctrl; struct v4l2_ctrl *splitter_width_ctrl; /* work queues */ struct workqueue_struct *work_queues; struct delayed_work delayed_work_enable_hotplug; struct delayed_work delayed_work_enable_interrupt; struct work_struct process_isr; struct mutex isr_lock; /* edid */ u8 edid_blocks_written; /* timing / mbus */ struct v4l2_dv_timings timings; u32 mbus_fmt_code; }; static inline struct tc358840_state *to_state(struct v4l2_subdev *sd) { return container_of(sd, struct tc358840_state, sd); } static void tc358840_enable_interrupts( struct v4l2_subdev *sd, bool cable_connected); static int tc358840_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd); static void tc358840_init_interrupts(struct v4l2_subdev *sd); static int tc358840_s_dv_timings( struct v4l2_subdev *sd, struct v4l2_dv_timings *timings); static void tc358840_set_csi(struct v4l2_subdev *sd); static void tc358840_set_splitter(struct v4l2_subdev *sd); static int tc358840_s_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid); /* --------------- I2C --------------- */ static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) { struct tc358840_state *state = to_state(sd); struct i2c_client *client = state->i2c_client; int err; u8 buf[2] = { reg >> 8, reg & 0xff }; struct i2c_msg msgs[] = { { .addr = client->addr, .flags = 0, .len = 2, .buf = buf, }, { .addr = client->addr, .flags = I2C_M_RD, .len = n, .buf = values, }, }; err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (err != ARRAY_SIZE(msgs)) { v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n", __func__, reg, client->addr); } if (debug < 3) return; switch (n) { case 1: v4l2_info(sd, "I2C read 0x%04X = 0x%02X\n", reg, values[0]); break; case 2: v4l2_info(sd, "I2C read 0x%04X = 0x%02X%02X\n", reg, values[1], values[0]); break; case 4: v4l2_info(sd, "I2C read 0x%04X = 0x%02X%02X%02X%02X\n", reg, values[3], values[2], values[1], values[0]); break; default: v4l2_info(sd, "I2C read %d bytes from address 0x%04X\n", n, reg); } } static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) { struct tc358840_state *state = to_state(sd); struct i2c_client *client = state->i2c_client; int err, i; struct i2c_msg msg; u8 data[MAX_DATABUF]; WARN_ON(MAX_DATABUF < (2 + n)); msg.addr = client->addr; msg.buf = data; msg.len = 2 + n; msg.flags = 0; data[0] = reg >> 8; data[1] = reg & 0xff; for (i = 0; i < n; i++) data[2 + i] = values[i]; err = i2c_transfer(client->adapter, &msg, 1); if (err != 1) { v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n", __func__, reg, client->addr); return; } if (debug < 3) return; switch (n) { case 1: v4l2_info(sd, "I2C write 0x%04X = 0x%02X\n", reg, data[2]); break; case 2: v4l2_info(sd, "I2C write 0x%04X = 0x%02X%02X\n", reg, data[3], data[2]); break; case 4: v4l2_info(sd, "I2C write 0x%04X = 0x%02X%02X%02X%02X\n", reg, data[5], data[4], data[3], data[2]); break; default: v4l2_info(sd, "I2C write %d bytes from address 0x%04X\n", n, reg); } } static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg) { u8 val; i2c_rd(sd, reg, &val, 1); return val; } static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val) { i2c_wr(sd, reg, &val, 1); } static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg, u8 mask, u8 val) { i2c_wr8(sd, reg, (i2c_rd8(sd, reg) & mask) | val); } static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg) { u16 val; i2c_rd(sd, reg, (u8 *)&val, 2); return val; } static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val) { i2c_wr(sd, reg, (u8 *)&val, 2); } static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val) { i2c_wr16(sd, reg, (i2c_rd16(sd, reg) & mask) | val); } static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg) { u32 val; i2c_rd(sd, reg, (u8 *)&val, 4); return val; } static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val) { i2c_wr(sd, reg, (u8 *)&val, 4); } static void i2c_wr32_and_or(struct v4l2_subdev *sd, u32 reg, u32 mask, u32 val) { i2c_wr32(sd, reg, (i2c_rd32(sd, reg) & mask) | val); } /* --------------- STATUS --------------- */ static inline bool is_hdmi(struct v4l2_subdev *sd) { return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI; } static inline bool tx_5v_power_present(struct v4l2_subdev *sd) { return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V; } static inline bool no_signal(struct v4l2_subdev *sd) { return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS); } static inline bool no_sync(struct v4l2_subdev *sd) { return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC); } static inline bool audio_present(struct v4l2_subdev *sd) { return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE; } static int get_audio_sampling_rate(struct v4l2_subdev *sd) { static const int code_to_rate[] = { 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800, 88200, 768000, 96000, 705600, 176400, 0, 192000, 0 }; /* Register FS_SET is not cleared when the cable is disconnected */ if (no_signal(sd)) return 0; return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS]; } static unsigned tc358840_num_csi_lanes_in_use(struct v4l2_subdev *sd) { /* FIXME: Read # of lanes from both, TX0 and TX1 */ return i2c_rd32(sd, CSITX0_BASE_ADDR+LANEEN) & MASK_LANES; } /* --------------- TIMINGS --------------- */ static inline unsigned fps(const struct v4l2_bt_timings *t) { if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t)) return 0; return DIV_ROUND_CLOSEST((unsigned)t->pixelclock, V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t)); } static int tc358840_get_detected_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct v4l2_bt_timings *bt = &timings->bt; unsigned width, height, frame_width, frame_height, frame_interval, fps; memset(timings, 0, sizeof(struct v4l2_dv_timings)); if (no_signal(sd)) { v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__); return -ENOLINK; } if (no_sync(sd)) { v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__); return -ENOLCK; } timings->type = V4L2_DV_BT_656_1120; bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ? V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE; width = ((i2c_rd8(sd, DE_HSIZE_HI) & 0x1f) << 8) + i2c_rd8(sd, DE_HSIZE_LO); height = ((i2c_rd8(sd, DE_VSIZE_HI) & 0x1f) << 8) + i2c_rd8(sd, DE_VSIZE_LO); frame_width = ((i2c_rd8(sd, IN_HSIZE_HI) & 0x1f) << 8) + i2c_rd8(sd, IN_HSIZE_LO); frame_height = (((i2c_rd8(sd, IN_VSIZE_HI) & 0x3f) << 8) + i2c_rd8(sd, IN_VSIZE_LO)) / 2; /* TODO: Check if frame_interval is correct * since the register is not in the datasheet rev. 1.5 */ /* frame interval in milliseconds * 10 * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */ frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) + i2c_rd8(sd, FV_CNT_LO); fps = (frame_interval > 0) ? DIV_ROUND_CLOSEST(10000, frame_interval) : 0; bt->width = width; bt->height = height; bt->vsync = frame_height - height; bt->hsync = frame_width - width; bt->pixelclock = frame_width * frame_height * fps; if (bt->interlaced == V4L2_DV_INTERLACED) { bt->height *= 2; bt->il_vsync = bt->vsync + 1; bt->pixelclock /= 2; } return 0; } /* --------------- HOTPLUG / HDCP / EDID --------------- */ static void tc358840_delayed_work_enable_hotplug(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct tc358840_state *state = container_of(dwork, struct tc358840_state, delayed_work_enable_hotplug); struct v4l2_subdev *sd = &state->sd; v4l2_dbg(2, debug, sd, "%s:\n", __func__); i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0); } static void tc358840_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable) { v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? "enable" : "disable"); i2c_wr8_and_or(sd, HDCP_REG1, ~(MASK_AUTH_UNAUTH_SEL | MASK_AUTH_UNAUTH), MASK_AUTH_UNAUTH_SEL_16_FRAMES | MASK_AUTH_UNAUTH_AUTO); i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET, SET_AUTO_P3_RESET_FRAMES(0x0f)); /* HDCP is disabled by configuring the receiver as HDCP repeater. The * repeater mode require software support to work, so HDCP * authentication will fail. */ i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, enable ? KEY_RD_CMD : 0); i2c_wr8_and_or(sd, HDCP_MODE, ~(MASK_AUTO_CLR | MASK_MODE_RST_TN), enable ? (MASK_AUTO_CLR | MASK_MODE_RST_TN) : 0); /* Apple MacBook Pro gen.8 has a bug that makes it freeze every fifth * second when HDCP is disabled, but the MAX_EXCED bit is handled * correctly and HDCP is disabled on the HDMI output. */ i2c_wr8_and_or(sd, BSTATUS1, ~MASK_MAX_EXCED, enable ? 0 : MASK_MAX_EXCED); i2c_wr8_and_or(sd, BCAPS, ~(MASK_REPEATER | MASK_READY), enable ? 0 : MASK_REPEATER | MASK_READY); } static void tc358840_disable_edid(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); v4l2_dbg(2, debug, sd, "%s:\n", __func__); cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); /* DDC access to EDID is also disabled when hotplug is disabled. See * register DDC_CTL */ i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0); } static void tc358840_enable_edid(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); if (state->edid_blocks_written == 0) { v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__); return; } v4l2_dbg(2, debug, sd, "%s:\n", __func__); /* Enable hotplug after 100 ms. DDC access to EDID is also enabled when * hotplug is enabled. See register DDC_CTL */ queue_delayed_work(state->work_queues, &state->delayed_work_enable_hotplug, HZ / 10); tc358840_enable_interrupts(sd, true); tc358840_s_ctrl_detect_tx_5v(sd); } static void tc358840_delayed_work_enable_interrupt(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct tc358840_state *state = container_of(dwork, struct tc358840_state, delayed_work_enable_interrupt); struct v4l2_subdev *sd = &state->sd; struct v4l2_subdev_edid sd_edid = { .blocks = 2, .edid = edid, }; v4l2_dbg(2, debug, sd, "%s:\n", __func__); tc358840_enable_interrupts(sd, tx_5v_power_present(sd)); /* Temporary EDID. Should be set by userspace */ tc358840_s_edid(sd, &sd_edid); } static void tc358840_erase_bksv(struct v4l2_subdev *sd) { int i; for (i = 0; i < 5; i++) i2c_wr8(sd, BKSV + i, 0); } /* --------------- AVI infoframe --------------- */ static void print_avi_infoframe(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct device *dev = &client->dev; union hdmi_infoframe frame; u8 buffer[HDMI_INFOFRAME_SIZE(MAX)]; if (!is_hdmi(sd)) { v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n"); return; } i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI)); if (hdmi_infoframe_unpack(&frame, buffer) < 0) { v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__); return; } hdmi_infoframe_log(KERN_INFO, dev, &frame); } /* --------------- CTRLS --------------- */ static int tc358840_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl, tx_5v_power_present(sd)); } static int tc358840_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl, get_audio_sampling_rate(sd)); } static int tc358840_s_ctrl_audio_present(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); return v4l2_ctrl_s_ctrl(state->audio_present_ctrl, audio_present(sd)); } static int tc358840_update_controls(struct v4l2_subdev *sd) { int ret = 0; ret |= tc358840_s_ctrl_detect_tx_5v(sd); ret |= tc358840_s_ctrl_audio_sampling_rate(sd); ret |= tc358840_s_ctrl_audio_present(sd); return ret; } /* --------------- INIT --------------- */ static void tc358840_reset_phy(struct v4l2_subdev *sd) { v4l2_dbg(1, debug, sd, "%s:\n", __func__); i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0); i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL); } static void tc358840_reset(struct v4l2_subdev *sd, u16 mask) { u16 sysctl = i2c_rd16(sd, SYSCTL); i2c_wr16(sd, SYSCTL, sysctl | mask); i2c_wr16(sd, SYSCTL, sysctl & ~mask); } static inline void tc358840_sleep_mode(struct v4l2_subdev *sd, bool enable) { v4l2_dbg(1, debug, sd, "%s(): %s\n", __func__, enable ? "enable" : "disable"); i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP, enable ? MASK_SLEEP : 0); } static int enable_stream(struct v4l2_subdev *sd, bool enable) { struct tc358840_state *state = to_state(sd); struct tc358840_platform_data *pdata = &state->pdata; u32 sync_timeout_ctr; v4l2_dbg(2, debug, sd, "%s: %sable\n", __func__, enable ? "en" : "dis"); if (enable == state->enabled) return 0; if (enable) { #if 0 /* Wait until we can use the clock-noncontinuous property */ if (pdata->endpoint.bus.mipi_csi2.flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK) { i2c_wr32_and_or(sd, FUNCMODE, ~(MASK_CONTCLKMODE), MASK_FORCESTOP); } else { /* It is critical for CSI receiver to see lane transition * LP11->HS. Set to non-continuous mode to enable clock lane * LP11 state. */ i2c_wr32_and_or(sd, FUNCMODE, ~(MASK_CONTCLKMODE), 0); /* Set to continuous mode to trigger LP11->HS transition */ i2c_wr32_and_or(sd, FUNCMODE, 0, MASK_CONTCLKMODE); } #else i2c_wr32_and_or(sd, FUNCMODE, ~(MASK_CONTCLKMODE), MASK_FORCESTOP); #endif /* Unmute video */ i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE); /* Signal end of initialization */ i2c_wr8(sd, INIT_END, MASK_INIT_END); } else { /* Enable Registers to be initialized */ i2c_wr8_and_or(sd, INIT_END, ~(MASK_INIT_END), 0x00); /* Mute video so that all data lanes go to LSP11 state. * No data is output to CSI Tx block. */ i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE); tc358840_set_csi(sd); tc358840_set_splitter(sd); } /* Wait for HDMI input to become stable */ if (enable) { sync_timeout_ctr = 100; while (no_sync(sd) && sync_timeout_ctr) sync_timeout_ctr--; if (sync_timeout_ctr == 0) { /* Disable stream again. Probably no cable inserted.. */ v4l2_err(sd, "%s: Timeout: HDMI input sync failed.\n", __func__); enable_stream(sd, false); return -EIO; } v4l2_dbg(2, debug, sd, "%s: Stream enabled! Remaining timeout attempts: %d\n", __func__, sync_timeout_ctr); } i2c_wr16_and_or(sd, CONFCTL0, ~(MASK_VTX0EN | MASK_VTX1EN | MASK_ABUFEN), enable ? ((pdata->csi_port & (MASK_VTX0EN | MASK_VTX1EN)) | MASK_ABUFEN | MASK_TX_MSEL | MASK_AUTOINDEX) : (MASK_TX_MSEL | MASK_AUTOINDEX)); state->enabled = enable; return 0; } static void tc358840_set_splitter(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); v4l2_dbg(3, debug, sd, "%s():\n", __func__); if (state->timings.bt.width <= 1920) { i2c_wr16_and_or(sd, SPLITTX0_CTRL, ~(MASK_IFEN | MASK_LCD_CSEL), MASK_SPBP); i2c_wr16_and_or(sd, SPLITTX1_CTRL, ~(MASK_IFEN | MASK_LCD_CSEL), MASK_SPBP); i2c_wr16_and_or(sd, SPLITTX0_SPLIT, (u16)(0x0000ffff & ~(MASK_TX1SEL | MASK_EHW)), 0); } else { i2c_wr16_and_or(sd, SPLITTX0_CTRL, ~(MASK_IFEN | MASK_LCD_CSEL | MASK_SPBP), 0); i2c_wr16_and_or(sd, SPLITTX1_CTRL, ~(MASK_IFEN | MASK_LCD_CSEL | MASK_SPBP), 0); i2c_wr16_and_or(sd, SPLITTX0_SPLIT, ~(MASK_TX1SEL), MASK_EHW); } } static void tc358840_set_pll(struct v4l2_subdev *sd, enum tc358840_csi_port port) { struct tc358840_state *state = to_state(sd); struct tc358840_platform_data *pdata = &state->pdata; u16 base_addr; u16 pll_frs; u32 pllconf; u32 pllconf_new; u32 hsck; v4l2_dbg(2, debug, sd, "%s:\n", __func__); BUG_ON((pdata->csi_port <= CSI_TX_NONE) || (pdata->csi_port > CSI_TX_BOTH)); if (pdata->csi_port == CSI_TX_NONE) { v4l2_err(sd, "%s: No CSI port defined!\n", __func__); return; } base_addr = (port == CSI_TX_0) ? CSITX0_BASE_ADDR : CSITX1_BASE_ADDR; pllconf = i2c_rd32(sd, base_addr+PLLCONF); pllconf_new = SET_PLL_PRD(pdata->pll_prd) | SET_PLL_FBD(pdata->pll_fbd); hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd; if (hsck > 500000000) pll_frs = 0x0; else if (hsck > 250000000) pll_frs = 0x1; else if (hsck > 125000000) pll_frs = 0x2; else pll_frs = 0x3; v4l2_dbg(1, debug, sd, "%s: Updating PLL clock of CSI TX%d\n", __func__, port-1); i2c_wr32(sd, base_addr+PLLCONF, pllconf_new | SET_PLL_FRS(pll_frs)); } static void tc358840_set_ref_clk(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); struct tc358840_platform_data *pdata = &state->pdata; u32 sys_freq; u32 lock_ref_freq; u32 nco; u16 csc; v4l2_dbg(3, debug, sd, "%s():\n", __func__); BUG_ON((pdata->refclk_hz < 40000000) || (pdata->refclk_hz > 50000000)); /* System Frequency */ sys_freq = pdata->refclk_hz / 10000; i2c_wr8(sd, SYS_FREQ0, sys_freq & 0x00FF); i2c_wr8(sd, SYS_FREQ1, (sys_freq & 0xFF00) >> 8); /* Audio System Frequency */ lock_ref_freq = pdata->refclk_hz / 100; i2c_wr8(sd, LOCK_REF_FREQA, lock_ref_freq & 0xFF); i2c_wr8(sd, LOCK_REF_FREQB, (lock_ref_freq >> 8) & 0xFF); i2c_wr8(sd, LOCK_REF_FREQC, (lock_ref_freq >> 16) & 0x0F); /* Audio PLL */ i2c_wr8(sd, NCO_F0_MOD, MASK_NCO_F0_MOD_REG); /* 6.144 * 2^28 = 1649267442 */ nco = (1649267442 / (pdata->refclk_hz / 1000000)); i2c_wr8(sd, NCO_48F0A, nco & 0xFF); i2c_wr8(sd, NCO_48F0B, (nco >> 8) & 0xFF); i2c_wr8(sd, NCO_48F0C, (nco >> 16) & 0xFF); i2c_wr8(sd, NCO_48F0D, (nco >> 24) & 0xFF); /* Color Space Conversion */ csc = pdata->refclk_hz / 10000; i2c_wr8(sd, SCLK_CSC0, csc & 0xFF); i2c_wr8(sd, SCLK_CSC1, (csc >> 8) & 0xFF); } static void tc358840_set_csi_mbus_config(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); v4l2_dbg(3, debug, sd, "%s():\n", __func__); switch (state->mbus_fmt_code) { case MEDIA_BUS_FMT_UYVY8_1X16: v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__); i2c_wr8(sd, VOUT_FMT, MASK_OUTFMT_422 | MASK_422FMT_NORMAL); i2c_wr8(sd, VOUT_FIL, MASK_422FIL_3_TAP_444 | MASK_444FIL_2_TAP); i2c_wr8(sd, VOUT_SYNC0, MASK_MODE_2); i2c_wr8(sd, VOUT_CSC, MASK_CSC_MODE_BUILTIN | MASK_COLOR_601_YCBCR_LIMITED); i2c_wr16_and_or(sd, CONFCTL0, ~(MASK_YCBCRFMT), MASK_YCBCRFMT_YCBCR422_8); i2c_wr16(sd, CONFCTL1, 0x0); break; case MEDIA_BUS_FMT_RGB888_1X24: v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__); i2c_wr8(sd, VOUT_FMT, MASK_OUTFMT_444_RGB); i2c_wr8(sd, VOUT_FIL, MASK_422FIL_3_TAP_444 | MASK_444FIL_2_TAP); i2c_wr8(sd, VOUT_SYNC0, MASK_MODE_2); i2c_wr8(sd, VOUT_CSC, MASK_CSC_MODE_BUILTIN | MASK_COLOR_RGB_LIMITED); i2c_wr16_and_or(sd, CONFCTL0, ~(MASK_YCBCRFMT), 0x0); i2c_wr16_and_or(sd, CONFCTL1, 0x0, MASK_TX_OUT_FMT_RGB888); break; default: v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n", __func__, state->mbus_fmt_code); break; } } static unsigned tc358840_num_csi_lanes_needed(struct v4l2_subdev *sd) { /* TODO: Check if this can be useful */ #if 0 struct tc358840_state *state = to_state(sd); struct v4l2_bt_timings *bt = &state->timings.bt; struct tc358840_platform_data *pdata = &state->pdata; u32 bits_pr_pixel = (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ? 16 : 24; u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel; u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd; return DIV_ROUND_UP(bps, bps_pr_lane); #endif /* Always use 4 lanes for one CSI */ return 4; } static void tc358840_set_csi(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); struct tc358840_platform_data *pdata = &state->pdata; #if 0 struct v4l2_bt_timings *bt = &state->timings.bt; #endif unsigned lanes = tc358840_num_csi_lanes_needed(sd); enum tc358840_csi_port port; u16 base_addr; v4l2_dbg(3, debug, sd, "%s:\n", __func__); tc358840_reset(sd, MASK_CTXRST); for (port = CSI_TX_0; port <= CSI_TX_1; port++) { base_addr = (port == CSI_TX_0) ? CSITX0_BASE_ADDR : CSITX1_BASE_ADDR; if (pdata->csi_port != CSI_TX_BOTH && pdata->csi_port != port) { v4l2_dbg(1, debug, sd, "%s: Disabling CSI TX%d\n", __func__, port-1); /* Disable CSI lanes (High Z)*/ i2c_wr32_and_or(sd, base_addr+LANEEN, ~(MASK_CLANEEN), 0); continue; } v4l2_dbg(1, debug, sd, "%s: Enabling CSI TX%d\n", __func__, port-1); /* (0x0108) */ i2c_wr32(sd, base_addr+CSITX_CLKEN, MASK_CSITX_EN); /* * PLL has to be enabled between CSITX_CLKEN and * LANEEN (0x02AC) */ tc358840_set_pll(sd, port); /* (0x02A0) */ i2c_wr32_and_or(sd, base_addr+MIPICLKEN, ~(MASK_MP_CKEN), MASK_MP_ENABLE); usleep_range(10000, 11000); /* (0x02A0) */ i2c_wr32(sd, base_addr+MIPICLKEN, MASK_MP_CKEN | MASK_MP_ENABLE); /* (0x010C) */ i2c_wr32(sd, base_addr+PPICLKEN, MASK_HSTXCLKEN); /* (0x0118) */ i2c_wr32(sd, base_addr+LANEEN, (lanes & MASK_LANES) | MASK_CLANEEN); /* (0x0120) */ i2c_wr32(sd, base_addr+LINEINITCNT, pdata->lineinitcnt); /* * TODO: Check if this is the correct register * (0x0150) */ i2c_rd32(sd, base_addr+FUNCMODE); /* (0x0254) */ i2c_wr32(sd, base_addr+LPTXTIMECNT, pdata->lptxtimecnt); /* (0x0258) */ i2c_wr32(sd, base_addr+TCLK_HEADERCNT, pdata->tclk_headercnt); /* (0x025C) */ i2c_wr32(sd, base_addr+TCLK_TRAILCNT, pdata->tclk_trailcnt); /* (0x0260) */ i2c_wr32(sd, base_addr+THS_HEADERCNT, pdata->ths_headercnt); /* (0x0264) */ i2c_wr32(sd, base_addr+TWAKEUP, pdata->twakeup); /* (0x0268) */ i2c_wr32(sd, base_addr+TCLK_POSTCNT, pdata->tclk_postcnt); /* (0x026C) */ i2c_wr32(sd, base_addr+THS_TRAILCNT, pdata->ths_trailcnt); /* (0x0270) */ i2c_wr32(sd, base_addr+HSTXVREGCNT, pdata->hstxvregcnt); /* (0x0274) */ i2c_wr32(sd, base_addr+HSTXVREGEN, ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) | ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) | ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) | ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) | ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0)); /* * Finishing configuration by setting CSITX to start * (0X011C) */ i2c_wr32(sd, base_addr+CSITX_START, 0x00000001); i2c_rd32(sd, base_addr+CSITX_INTERNAL_STAT); } } static void tc358840_set_hdmi_phy(struct v4l2_subdev *sd) { v4l2_dbg(3, debug, sd, "%s():\n", __func__); /* Reset PHY */ tc358840_reset_phy(sd); /* Set PHY to manual */ i2c_wr8(sd, PHY_CTL, MASK_48_MHZ); /* Enable PHY */ i2c_wr8_and_or(sd, PHY_ENB, ~MASK_ENABLE_PHY, 0x0); i2c_wr8_and_or(sd, PHY_ENB, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY); /* Enable Audio PLL */ i2c_wr8(sd, APPL_CTL, MASK_APLL_CPCTL_NORMAL | MASK_APLL_ON); /* Enable DDC IO */ i2c_wr8(sd, DDCIO_CTL, MASK_DDC_PWR_ON); } static void tc358840_set_hdmi_audio(struct v4l2_subdev *sd) { v4l2_dbg(3, debug, sd, "%s():\n", __func__); i2c_wr8(sd, FORCE_MUTE, 0x00); i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 | MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 | MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0); i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9); i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2); i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500)); i2c_wr8(sd, FS_MUTE, 0x00); i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE); i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE); i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM); i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM); /* * TODO: Set output data bit length (currently 16 bit, 8 bit discarded) */ i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S); i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100)); i2c_wr16_and_or(sd, CONFCTL0, 0xFFFF, MASK_AUDCHNUM_2 | MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX); } static void tc358840_set_hdmi_info_frame_mode(struct v4l2_subdev *sd) { v4l2_dbg(3, debug, sd, "%s(): DUMMY\n", __func__); /* TODO: Check which registers are needed/available */ #if 0 i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE | MASK_ACP_INT_MODE | MASK_VS_INT_MODE | MASK_SPD_INT_MODE | MASK_MS_INT_MODE | MASK_AUD_INT_MODE | MASK_AVI_INT_MODE); i2c_wr8(sd, NO_PKT_LIMIT, 0x2c); i2c_wr8(sd, NO_PKT_CLR, 0x53); i2c_wr8(sd, ERR_PK_LIMIT, 0x01); i2c_wr8(sd, NO_PKT_LIMIT2, 0x30); i2c_wr8(sd, NO_GDB_LIMIT, 0x10); #endif } static void tc358840_initial_setup(struct v4l2_subdev *sd) { static struct v4l2_dv_timings default_timing = V4L2_DV_BT_CEA_1920X1080P60; struct tc358840_state *state = to_state(sd); struct tc358840_platform_data *pdata = &state->pdata; v4l2_dbg(3, debug, sd, "%s():\n", __func__); /* *** Reset *** */ enable_stream(sd, false); tc358840_sleep_mode(sd, false); tc358840_reset(sd, MASK_RESET_ALL); tc358840_init_interrupts(sd); /* *** Init CSI *** */ tc358840_s_dv_timings(sd, &default_timing); tc358840_set_ref_clk(sd); i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE, pdata->ddc5v_delay & MASK_DDC5V_MODE); i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE_ALL, MASK_RAM_EDDC); i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_CTL0, 0); tc358840_set_hdmi_phy(sd); tc358840_set_hdmi_hdcp(sd, pdata->enable_hdcp); tc358840_set_hdmi_audio(sd); tc358840_set_hdmi_info_frame_mode(sd); /* All CE and IT formats are detected as RGB full range in DVI mode */ i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0); } /* --------------- IRQ --------------- */ static void tc358840_format_change(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); struct v4l2_dv_timings timings; static const struct v4l2_event tc358840_ev_fmt = { .type = V4L2_EVENT_SOURCE_CHANGE, .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, }; if (tc358840_get_detected_timings(sd, &timings)) { enable_stream(sd, false); v4l2_info(sd, "%s: No Signal\n", __func__); } else { if (!tegra_v4l2_match_dv_timings(&state->timings, &timings, 0, false)) enable_stream(sd, false); v4l2_print_dv_timings(sd->name, "tc358840_format_change: New format: ", &timings, false); } /* Application gets notified after CSI Tx's are reset */ if (sd->devnode) v4l2_subdev_notify_event(sd, &tc358840_ev_fmt); } static void tc358840_init_interrupts(struct v4l2_subdev *sd) { u16 i; v4l2_dbg(3, debug, sd, "%s():\n", __func__); /* clear interrupt status registers */ for (i = SYS_INT; i <= MISC_INT; i++) { /* No interrupt register at Address 0x850A */ if (i != 0x850A) i2c_wr8(sd, i, 0xFF); } /* Clear and disable all interrupts */ i2c_wr16(sd, INTSTATUS, MASK_INT_STATUS_MASK_ALL); i2c_wr16(sd, INTSTATUS, 0x0); i2c_wr16(sd, INTMASK, MASK_INT_STATUS_MASK_ALL); } static void tc358840_enable_interrupts(struct v4l2_subdev *sd, bool cable_connected) { v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__, cable_connected); if (cable_connected) { i2c_wr8(sd, SYS_INTM, ~(MASK_DDC | MASK_DVI | MASK_HDMI) & 0xFF); i2c_wr8(sd, SYS_INTM, ~(MASK_DDC) & 0xFF); i2c_wr8(sd, CLK_INTM, ~MASK_IN_DE_CHG); i2c_wr8(sd, CBIT_INTM, ~(MASK_CBIT_FS | MASK_AF_LOCK | MASK_AF_UNLOCK) & 0xFF); i2c_wr8(sd, AUDIO_INTM, ~MASK_BUFINIT_END); i2c_wr8(sd, MISC_INTM, ~MASK_SYNC_CHG); } else { i2c_wr8(sd, SYS_INTM, ~MASK_DDC & 0xFF); i2c_wr8(sd, CLK_INTM, 0xFF); i2c_wr8(sd, CBIT_INTM, 0xFF); i2c_wr8(sd, AUDIO_INTM, 0xFF); i2c_wr8(sd, MISC_INTM, 0xFF); } } static void tc358840_hdmi_audio_int_handler(struct v4l2_subdev *sd, bool *handled) { u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM); u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask; i2c_wr8(sd, AUDIO_INT, audio_int); v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int); tc358840_s_ctrl_audio_sampling_rate(sd); tc358840_s_ctrl_audio_present(sd); } static void tc358840_hdmi_misc_int_handler(struct v4l2_subdev *sd, bool *handled) { struct tc358840_state *state = to_state(sd); u8 misc_int_mask = i2c_rd8(sd, MISC_INTM); u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask; i2c_wr8(sd, MISC_INT, misc_int); v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int); if (misc_int & MASK_SYNC_CHG) { /* Reset the HDMI PHY to try to trigger proper lock on the * incoming video format. Erase BKSV to prevent that old keys * are used when a new source is connected. */ state->format_changed = true; misc_int &= ~MASK_SYNC_CHG; if (handled) *handled = true; } if (misc_int) { v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n", __func__, misc_int); } } static void tc358840_hdmi_cbit_int_handler(struct v4l2_subdev *sd, bool *handled) { u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM); u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask; i2c_wr8(sd, CBIT_INT, cbit_int); v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int); if (cbit_int & MASK_CBIT_FS) { v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n", __func__); tc358840_s_ctrl_audio_sampling_rate(sd); cbit_int &= ~MASK_CBIT_FS; if (handled) *handled = true; } if (cbit_int & (MASK_AF_LOCK | MASK_AF_UNLOCK)) { v4l2_dbg(1, debug, sd, "%s: Audio present changed\n", __func__); tc358840_s_ctrl_audio_present(sd); cbit_int &= ~(MASK_AF_LOCK | MASK_AF_UNLOCK); if (handled) *handled = true; } if (cbit_int) { v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n", __func__, cbit_int); } } static void tc358840_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled) { struct tc358840_state *state = to_state(sd); u8 clk_int_mask = i2c_rd8(sd, CLK_INTM); u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask; /* Bit 7 and bit 6 are set even when they are masked */ i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_OUT_H_CHG); v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int); if (clk_int & (MASK_IN_DE_CHG)) { v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n", __func__); /* TODO: Check if also true for tc358840 */ /* If the source switch to a new resolution with the same pixel * frequency as the existing (e.g. 1080p25 -> 720p50), the * I_SYNC_CHG interrupt is not always triggered, while the * I_IN_DE_CHG interrupt seems to work fine. FMT_CHANGE * notifications are only sent when the signal is stable to * reduce the number of notifications. */ if (!no_signal(sd) && !no_sync(sd)) state->format_changed = true; clk_int &= ~MASK_IN_DE_CHG; if (handled) *handled = true; } if (clk_int) { v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n", __func__, clk_int); } } static void tc358840_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled) { struct tc358840_state *state = to_state(sd); u8 sys_int_mask = i2c_rd8(sd, SYS_INTM); u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask; i2c_wr8(sd, SYS_INT, sys_int); v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int); if (sys_int & MASK_DDC) { bool tx_5v = tx_5v_power_present(sd); v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n", __func__, tx_5v ? "yes" : "no"); if (tx_5v) { tc358840_enable_edid(sd); } else { tc358840_enable_interrupts(sd, false); tc358840_disable_edid(sd); memset(&state->timings, 0, sizeof(state->timings)); tc358840_erase_bksv(sd); tc358840_update_controls(sd); } sys_int &= ~MASK_DDC; if (handled) *handled = true; } if (sys_int & MASK_DVI) { v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n", __func__); /* Reset the HDMI PHY to try to trigger proper lock on the * incoming video format. Erase BKSV to prevent that old keys * are used when a new source is connected. */ if (no_sync(sd) || no_signal(sd)) state->format_changed = true; sys_int &= ~MASK_DVI; if (handled) *handled = true; } if (sys_int & MASK_HDMI) { v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n", __func__); /* TODO: Check if reg is required. Reg not found in Rev. 1.5 */ #if 0 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON); #endif sys_int &= ~MASK_HDMI; if (handled) *handled = true; } if (sys_int) { v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n", __func__, sys_int); } } /* --------------- CORE OPS --------------- */ static int tc358840_isr(struct v4l2_subdev *sd, u32 status, bool *handled) { struct tc358840_state *state = to_state(sd); u16 intstatus; unsigned retry = 10; //disable_irq_nosync(state->pdata.interrupt); intstatus = i2c_rd16(sd, INTSTATUS); v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04X\n", __func__, intstatus); /* * Need to figure out why these msleeps are needed, and which of these * are needed. Without msleeps the interrupts just stop. */ usleep_range(500, 1000); state->format_changed = false; if (intstatus & MASK_HDMI_INT) { u8 hdmi_int0; u8 hdmi_int1; retry: retry--; hdmi_int0 = i2c_rd8(sd, HDMI_INT0); usleep_range(500, 1000); hdmi_int1 = i2c_rd8(sd, HDMI_INT1); usleep_range(500, 1000); if (hdmi_int0 & MASK_MISC) tc358840_hdmi_misc_int_handler(sd, handled); if (hdmi_int1 & MASK_ACBIT) tc358840_hdmi_cbit_int_handler(sd, handled); if (hdmi_int1 & MASK_CLK) tc358840_hdmi_clk_int_handler(sd, handled); if (hdmi_int1 & MASK_SYS) tc358840_hdmi_sys_int_handler(sd, handled); if (hdmi_int1 & MASK_AUD) tc358840_hdmi_audio_int_handler(sd, handled); usleep_range(500, 1000); i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT); intstatus &= ~MASK_HDMI_INT; usleep_range(500, 1000); /* Display unhandled HDMI interrupts */ hdmi_int0 = i2c_rd8(sd, HDMI_INT0); if (hdmi_int0) { v4l2_dbg(1, debug, sd, "%s: Unhandled HDMI_INT0 interrupts: 0x%02X\n", __func__, hdmi_int0); if (retry) goto retry; } usleep_range(500, 1000); hdmi_int1 = i2c_rd8(sd, HDMI_INT1); if (hdmi_int1) { v4l2_dbg(1, debug, sd, "%s: Unhandled HDMI_INT1 interrupts: 0x%02X\n", __func__, hdmi_int1); if (retry) goto retry; } } if (handled && state->format_changed) { tc358840_format_change(sd); if (no_sync(sd) || no_signal(sd)) { tc358840_reset_phy(sd); tc358840_erase_bksv(sd); } } if (intstatus & MASK_CSITX0_INT) { v4l2_dbg(3, debug, sd, "%s: MASK_CSITX0_INT\n", __func__); i2c_wr16(sd, INTSTATUS, MASK_CSITX0_INT); intstatus &= ~MASK_CSITX0_INT; } if (intstatus & MASK_CSITX1_INT) { v4l2_dbg(3, debug, sd, "%s: MASK_CSITX1_INT\n", __func__); i2c_wr16(sd, INTSTATUS, MASK_CSITX1_INT); intstatus &= ~MASK_CSITX1_INT; } if (intstatus) { v4l2_dbg(1, debug, sd, "%s: Unhandled IntStatus interrupts: 0x%04x\n", __func__, intstatus); } //enable_irq(state->pdata.interrupt); return 0; } static void tc358840_process_isr(struct work_struct *work) { struct tc358840_state *state = container_of(work, struct tc358840_state, process_isr); struct v4l2_subdev *sd = &state->sd; bool handled; v4l2_dbg(2, debug, sd, "%s:\n", __func__); mutex_lock(&state->isr_lock); tc358840_isr(sd, 0, &handled); mutex_unlock(&state->isr_lock); } static irqreturn_t tc358840_irq_handler(int irq, void *dev_id) { struct v4l2_subdev *sd = dev_id; struct tc358840_state *state = to_state(sd); queue_work(state->work_queues, &state->process_isr); return IRQ_HANDLED; } /* --------------- PAD OPS --------------- */ static int tc358840_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct tc358840_state *state = to_state(sd); u8 vout_csc = i2c_rd8(sd, VOUT_CSC); struct v4l2_mbus_framefmt *fmt; v4l2_dbg(3, debug, sd, "%s():\n", __func__); if (format->pad != 0) return -EINVAL; format->format.code = state->mbus_fmt_code; format->format.width = state->timings.bt.width; format->format.height = state->timings.bt.height; format->format.field = V4L2_FIELD_NONE; switch (vout_csc & MASK_COLOR) { case MASK_COLOR_RGB_FULL: case MASK_COLOR_RGB_LIMITED: format->format.colorspace = V4L2_COLORSPACE_SRGB; break; case MASK_COLOR_601_YCBCR_FULL: case MASK_COLOR_601_YCBCR_LIMITED: format->format.colorspace = V4L2_COLORSPACE_SMPTE170M; break; case MASK_COLOR_709_YCBCR_FULL: case MASK_COLOR_709_YCBCR_LIMITED: format->format.colorspace = V4L2_COLORSPACE_REC709; break; default: format->format.colorspace = 0; break; } fmt = &format->format; v4l2_dbg(3, debug, sd, "%s(): width=%d, height=%d, code=0x%08X, field=%d\n", __func__, fmt->width, fmt->height, fmt->code, fmt->field); return 0; } static int tc358840_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) { struct tc358840_state *state = to_state(sd); u32 code = format->format.code; /* is overwritten by get_fmt */ int ret = tc358840_get_fmt(sd, cfg, format); v4l2_dbg(3, debug, sd, "%s():\n", __func__); format->format.code = code; if (ret) return ret; switch (code) { case MEDIA_BUS_FMT_RGB888_1X24: case MEDIA_BUS_FMT_UYVY8_1X16: break; default: return -EINVAL; } if (format->which == V4L2_SUBDEV_FORMAT_TRY) return 0; v4l2_dbg(3, debug, sd, "%s(): format->which=%d\n", __func__, format->which); state->mbus_fmt_code = format->format.code; enable_stream(sd, false); tc358840_set_csi(sd); tc358840_set_csi_mbus_config(sd); return 0; } static int tc358840_g_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { struct tc358840_state *state = to_state(sd); v4l2_dbg(3, debug, sd, "%s():\n", __func__); memset(edid->reserved, 0, sizeof(edid->reserved)); if (edid->pad != 0) return -EINVAL; if (edid->start_block == 0 && edid->blocks == 0) { edid->blocks = state->edid_blocks_written; return 0; } if (state->edid_blocks_written == 0) return -ENODATA; if (edid->start_block >= state->edid_blocks_written || edid->blocks == 0) return -EINVAL; if (edid->start_block + edid->blocks > state->edid_blocks_written) edid->blocks = state->edid_blocks_written - edid->start_block; i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid, edid->blocks * EDID_BLOCK_SIZE); return 0; } static int tc358840_s_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { struct tc358840_state *state = to_state(sd); u16 edid_len = edid->blocks * EDID_BLOCK_SIZE; int i; v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n", __func__, edid->pad, edid->start_block, edid->blocks); memset(edid->reserved, 0, sizeof(edid->reserved)); if (edid->pad != 0) return -EINVAL; if (edid->start_block != 0) return -EINVAL; if (edid->blocks > EDID_NUM_BLOCKS_MAX) { edid->blocks = EDID_NUM_BLOCKS_MAX; return -E2BIG; } tc358840_disable_edid(sd); i2c_wr8(sd, EDID_LEN1, edid_len & 0xFF); i2c_wr8(sd, EDID_LEN2, edid_len >> 8); if (edid->blocks == 0) { state->edid_blocks_written = 0; return 0; } for (i = 0; i < 256; i++) { unsigned int val; val = edid->edid[i]; i2c_wr8(sd, EDID_RAM + i, val); } state->edid_blocks_written = edid->blocks; if (tx_5v_power_present(sd)) tc358840_enable_edid(sd); return 0; } static int tc358840_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, struct v4l2_event_subscription *sub) { switch (sub->type) { case V4L2_EVENT_SOURCE_CHANGE: return v4l2_src_change_event_subdev_subscribe(sd, fh, sub); case V4L2_EVENT_CTRL: return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub); default: return -EINVAL; } } /* --------------- VIDEO OPS --------------- */ static int tc358840_g_input_status(struct v4l2_subdev *sd, u32 *status) { v4l2_dbg(3, debug, sd, "%s():\n", __func__); *status = 0; *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0; *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0; v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status); return 0; } static int tc358840_s_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct tc358840_state *state = to_state(sd); v4l2_dbg(3, debug, sd, "%s():\n", __func__); if (!timings) return -EINVAL; if (debug) v4l2_print_dv_timings(sd->name, "tc358840_s_dv_timings: ", timings, false); if (tegra_v4l2_match_dv_timings(&state->timings, timings, 0, false)) { v4l2_dbg(1, debug, sd, "%s: no change\n", __func__); return 0; } if (!v4l2_valid_dv_timings(timings, &tc358840_timings_cap, NULL, NULL)) { v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__); return -ERANGE; } state->timings = *timings; enable_stream(sd, false); tc358840_set_csi(sd); tc358840_set_splitter(sd); return 0; } static int tc358840_g_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { struct tc358840_state *state = to_state(sd); v4l2_dbg(3, debug, sd, "%s():\n", __func__); *timings = state->timings; return 0; } static int tc358840_enum_dv_timings(struct v4l2_subdev *sd, struct v4l2_enum_dv_timings *timings) { v4l2_dbg(3, debug, sd, "%s(): DUMMY\n", __func__); if (timings->pad != 0) return -EINVAL; return v4l2_enum_dv_timings_cap(timings, &tc358840_timings_cap, NULL, NULL); } static int tc358840_query_dv_timings(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { int ret; v4l2_dbg(3, debug, sd, "%s():\n", __func__); ret = tc358840_get_detected_timings(sd, timings); if (ret) return ret; if (debug) v4l2_print_dv_timings(sd->name, "tc358840_query_dv_timings: ", timings, false); if (!v4l2_valid_dv_timings(timings, &tc358840_timings_cap, NULL, NULL)) { v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__); return -ERANGE; } return 0; } static int tc358840_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { v4l2_dbg(3, debug, sd, "%s():\n", __func__); if (cap->pad != 0) return -EINVAL; *cap = tc358840_timings_cap; return 0; } static int tc358840_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *cfg) { v4l2_dbg(3, debug, sd, "%s():\n", __func__); cfg->type = V4L2_MBUS_CSI2; /* Support for non-continuous CSI-2 clock is missing in the driver */ cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK | V4L2_MBUS_CSI2_CHANNEL_0; switch (tc358840_num_csi_lanes_in_use(sd)) { case 1: cfg->flags |= V4L2_MBUS_CSI2_1_LANE; break; case 2: cfg->flags |= V4L2_MBUS_CSI2_2_LANE; break; case 3: cfg->flags |= V4L2_MBUS_CSI2_3_LANE; break; case 4: cfg->flags |= V4L2_MBUS_CSI2_4_LANE; break; default: return -EINVAL; } v4l2_dbg(2, debug, sd, "%s: Lanes: 0x%02X\n", __func__, cfg->flags & 0x0F); return 0; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int tc358840_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) { switch (reg->size) { case 1: reg->val = i2c_rd8(sd, reg->reg); break; case 2: reg->val = i2c_rd16(sd, reg->reg); break; case 4: default: reg->val = i2c_rd32(sd, reg->reg); break; } return 0; } static int tc358840_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) { switch (reg->size) { case 1: i2c_wr8(sd, reg->reg, reg->val); break; case 2: i2c_wr16(sd, reg->reg, reg->val); break; case 4: default: i2c_wr32(sd, reg->reg, reg->val); break; } return 0; } #endif static int tc358840_log_status(struct v4l2_subdev *sd) { struct tc358840_state *state = to_state(sd); struct v4l2_dv_timings timings; u8 hdmi_sys_status = i2c_rd8(sd, SYS_STATUS); u16 sysctl = i2c_rd16(sd, SYSCTL); u8 vi_status3 = i2c_rd8(sd, VI_STATUS3); const int deep_color_mode[4] = { 8, 10, 12, 16 }; static const char * const input_color_space[] = { "RGB", "YCbCr 601", "Adobe RGB", "YCbCr 709", "NA (4)", "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601", "NA(10)", "NA(11)", "NA(12)", "Adobe YCC 601"}; v4l2_ctrl_subdev_log_status(sd); v4l2_info(sd, "-----Chip status-----\n"); v4l2_info(sd, "Chip ID: 0x%02x\n", (i2c_rd16(sd, CHIPID_ADDR) & MASK_CHIPID) >> 8); v4l2_info(sd, "Chip revision: 0x%02x\n", i2c_rd16(sd, CHIPID_ADDR) & MASK_REVID); v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n", !!(sysctl & MASK_IRRST), !!(sysctl & MASK_CECRST), !!(sysctl & MASK_CTXRST), !!(sysctl & MASK_HDMIRST)); v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off"); v4l2_info(sd, "Cable detected (+5V power): %s\n", hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no"); v4l2_info(sd, "DDC lines enabled: %s\n", (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_ALL) ? "yes" : "no"); v4l2_info(sd, "Hotplug enabled: %s\n", (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ? "yes" : "no"); v4l2_info(sd, "CEC enabled: %s\n", (i2c_rd16(sd, CECEN) & MASK_CECEN) ? "yes" : "no"); v4l2_info(sd, "-----Signal status-----\n"); v4l2_info(sd, "TMDS signal detected: %s\n", hdmi_sys_status & MASK_S_TMDS ? "yes" : "no"); v4l2_info(sd, "Stable sync signal: %s\n", hdmi_sys_status & MASK_S_SYNC ? "yes" : "no"); v4l2_info(sd, "PHY PLL locked: %s\n", hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no"); v4l2_info(sd, "PHY DE detected: %s\n", hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no"); if (tc358840_get_detected_timings(sd, &timings)) { v4l2_info(sd, "No video detected\n"); } else { v4l2_print_dv_timings(sd->name, "Detected format: ", &timings, true); } v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings, true); v4l2_info(sd, "-----CSI-TX status-----\n"); v4l2_info(sd, "Lanes needed: %d\n", tc358840_num_csi_lanes_needed(sd)); v4l2_info(sd, "Lanes in use: %d\n", tc358840_num_csi_lanes_in_use(sd)); v4l2_info(sd, "Splitter %sabled\n", (i2c_rd16(sd, SPLITTX0_CTRL) & MASK_SPBP) ? "dis" : "en"); /* v4l2_info(sd, "Waiting for particular sync signal: %s\n", (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ? "yes" : "no"); v4l2_info(sd, "Transmit mode: %s\n", (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ? "yes" : "no"); v4l2_info(sd, "Receive mode: %s\n", (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ? "yes" : "no"); v4l2_info(sd, "Stopped: %s\n", (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ? "yes" : "no");*/ v4l2_info(sd, "Color space: %s\n", state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ? "YCbCr 422 16-bit" : state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ? "RGB 888 24-bit" : "Unsupported"); v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D"); v4l2_info(sd, "HDCP encrypted content: %s\n", hdmi_sys_status & MASK_S_HDCP ? "yes" : "no"); v4l2_info(sd, "Input color space: %s %s range\n", input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1], (vi_status3 & MASK_LIMITED) ? "limited" : "full"); if (!is_hdmi(sd)) return 0; v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" : "off"); v4l2_info(sd, "Deep color mode: %d-bits per channel\n", deep_color_mode[(i2c_rd8(sd, VI_STATUS1) & MASK_S_DEEPCOLOR) >> 2]); print_avi_infoframe(sd); return 0; } static int tc358840_s_stream(struct v4l2_subdev *sd, int enable) { v4l2_dbg(3, debug, sd, "%s():\n", __func__); return enable_stream(sd, enable); } static int tc358840_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { v4l2_dbg(2, debug, sd, "%s()\n", __func__); if (code->index >= 2) return -EINVAL; switch (code->index) { case 0: code->code = MEDIA_BUS_FMT_UYVY8_1X16; break; case 1: code->code = MEDIA_BUS_FMT_RGB888_1X24; break; } return 0; } static int tc358840_enum_framesizes(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { const struct camera_common_frmfmt *frmfmt = tc358840_frmfmt; int num_frmfmt = ARRAY_SIZE(tc358840_frmfmt); v4l2_dbg(2, debug, sd, "%s()\n", __func__); if (fse->code != V4L2_PIX_FMT_UYVY && fse->code != V4L2_PIX_FMT_ABGR32) return -EINVAL; if (fse->index >= num_frmfmt) return -EINVAL; fse->index = array_index_nospec(fse->index, num_frmfmt); fse->min_width = fse->max_width = frmfmt[fse->index].size.width; fse->min_height = fse->max_height = frmfmt[fse->index].size.height; return 0; } static int tc358840_enum_frameintervals(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_interval_enum *fie) { const struct camera_common_frmfmt *frmfmt = tc358840_frmfmt; int num_frmfmt = ARRAY_SIZE(tc358840_frmfmt); int i; v4l2_dbg(2, debug, sd, "%s()\n", __func__); if (fie->code != V4L2_PIX_FMT_UYVY && fie->code != V4L2_PIX_FMT_ABGR32) return -EINVAL; for (i = 0; i < num_frmfmt; i++) { if (frmfmt[i].size.width == fie->width && frmfmt[i].size.height == fie->height) break; } if (i >= num_frmfmt) return -EINVAL; if (fie->index >= frmfmt[i].num_framerates) return -EINVAL; fie->index = array_index_nospec(fie->index, frmfmt[i].num_framerates); fie->interval.numerator = 1; fie->interval.denominator = frmfmt[i].framerates[fie->index]; return 0; } static int tc358840_s_power(struct v4l2_subdev *sd, int on) { return 0; } static struct v4l2_subdev_video_ops tc358840_subdev_video_ops = { .g_input_status = tc358840_g_input_status, .s_dv_timings = tc358840_s_dv_timings, .g_dv_timings = tc358840_g_dv_timings, .query_dv_timings = tc358840_query_dv_timings, .g_mbus_config = tc358840_g_mbus_config, .s_stream = tc358840_s_stream, }; static struct v4l2_subdev_core_ops tc358840_subdev_core_ops = { .s_power = tc358840_s_power, .log_status = tc358840_log_status, .interrupt_service_routine = tc358840_isr, .subscribe_event = tc358840_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = tc358840_g_register, .s_register = tc358840_s_register, #endif }; static const struct v4l2_subdev_pad_ops tc358840_pad_ops = { .set_fmt = tc358840_set_fmt, .get_fmt = tc358840_get_fmt, .enum_mbus_code = tc358840_enum_mbus_code, .get_edid = tc358840_g_edid, .set_edid = tc358840_s_edid, .dv_timings_cap = tc358840_dv_timings_cap, .enum_dv_timings = tc358840_enum_dv_timings, .enum_frame_size = tc358840_enum_framesizes, .enum_frame_interval = tc358840_enum_frameintervals, }; static struct v4l2_subdev_ops tc358840_ops = { .core = &tc358840_subdev_core_ops, .video = &tc358840_subdev_video_ops, .pad = &tc358840_pad_ops, }; /* --------------- CUSTOM CTRLS --------------- */ static const struct v4l2_ctrl_config tc358840_ctrl_audio_sampling_rate = { .id = TC358840_CID_AUDIO_SAMPLING_RATE, .name = "Audio sampling rate", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = 768000, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_READ_ONLY, }; static const struct v4l2_ctrl_config tc358840_ctrl_audio_present = { .id = TC358840_CID_AUDIO_PRESENT, .name = "Audio present", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = 0, .max = 1, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_READ_ONLY, }; static const struct v4l2_ctrl_config tc358840_ctrl_splitter_width = { .id = TC358840_CID_SPLITTER_WIDTH, .name = "Splitter Width", .type = V4L2_CTRL_TYPE_INTEGER, .min = 320, .max = 1920, .step = 16, .def = 1920, .flags = V4L2_CTRL_FLAG_READ_ONLY, }; /* --------------- PROBE / REMOVE --------------- */ #ifdef CONFIG_OF static bool tc358840_parse_dt(struct tc358840_platform_data *pdata, struct i2c_client *client) { struct device_node *node = client->dev.of_node; const u32 *property; v4l_dbg(1, debug, client, "Device Tree Parameters:\n"); pdata->reset_gpio = of_get_named_gpio(node, "reset-gpios", 0); if (pdata->reset_gpio == 0) return false; v4l_dbg(1, debug, client, "reset_gpio = %d\n", pdata->reset_gpio); // if (v4l2_of_parse_endpoint(node, &pdata->endpoint)) // return false; property = of_get_property(node, "refclk_hz", NULL); if (property == NULL) return false; pdata->refclk_hz = be32_to_cpup(property); v4l_dbg(1, debug, client, "refclk_hz = %d\n", be32_to_cpup(property)); property = of_get_property(node, "ddc5v_delay", NULL); if (property == NULL) return false; pdata->ddc5v_delay = be32_to_cpup(property); if (pdata->ddc5v_delay > DDC5V_DELAY_MAX) pdata->ddc5v_delay = DDC5V_DELAY_MAX; v4l_dbg(1, debug, client, "ddc5v_delay = %d ms\n", 50 * pdata->ddc5v_delay); property = of_get_property(node, "enable_hdcp", NULL); if (property == NULL) return false; pdata->enable_hdcp = be32_to_cpup(property); v4l_dbg(1, debug, client, "enable_hdcp = %d\n", be32_to_cpup(property)); property = of_get_property(node, "csi_port", NULL); if (property == NULL) return false; pdata->csi_port = be32_to_cpup(property); v4l_dbg(1, debug, client, "csi_port = %d\n", be32_to_cpup(property)); property = of_get_property(node, "lineinitcnt", NULL); if (property == NULL) return false; pdata->lineinitcnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "lineinitcnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "lptxtimecnt", NULL); if (property == NULL) return false; pdata->lptxtimecnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "lptxtimecnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "tclk_headercnt", NULL); if (property == NULL) return false; pdata->tclk_headercnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "tclk_headercnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "tclk_trailcnt", NULL); if (property == NULL) return false; pdata->tclk_trailcnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "tclk_trailcnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "ths_headercnt", NULL); if (property == NULL) return false; pdata->ths_headercnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "ths_headercnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "twakeup", NULL); if (property == NULL) return false; pdata->twakeup = be32_to_cpup(property); v4l_dbg(1, debug, client, "twakeup = %d\n", be32_to_cpup(property)); property = of_get_property(node, "tclk_postcnt", NULL); if (property == NULL) return false; pdata->tclk_postcnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "tclk_postcnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "ths_trailcnt", NULL); if (property == NULL) return false; pdata->ths_trailcnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "ths_trailcnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "hstxvregcnt", NULL); if (property == NULL) return false; pdata->hstxvregcnt = be32_to_cpup(property); v4l_dbg(1, debug, client, "hstxvregcnt = %d\n", be32_to_cpup(property)); property = of_get_property(node, "pll_prd", NULL); if (property == NULL) return false; pdata->pll_prd = be32_to_cpup(property); v4l_dbg(1, debug, client, "pll_prd = %d\n", be32_to_cpup(property)); property = of_get_property(node, "pll_fbd", NULL); if (property == NULL) return false; pdata->pll_fbd = be32_to_cpup(property); v4l_dbg(1, debug, client, "pll_fbd = %d\n", be32_to_cpup(property)); return true; } #endif static int tc358840_pwr_init(struct tc358840_platform_data *pdata, struct i2c_client *client) { struct device_node *node = client->dev.of_node; int cam2_rst; int err; struct regulator *dvdd; struct regulator *iovdd; err = camera_common_regulator_get(&client->dev, &iovdd, "vif"); if (err < 0) { dev_err(&client->dev, "cannot get regulator vif %d\n", err); return -EINVAL; } err = camera_common_regulator_get(&client->dev, &dvdd, "vdig"); if (err < 0) { dev_err(&client->dev, "cannot get regulator vdig %d\n", err); return -EINVAL; } /* cam2 rst */ cam2_rst = of_get_named_gpio(node, "cam2_rst", 0); if (cam2_rst == 0) return false; err = gpio_request(cam2_rst, "cam2-rst"); if (err < 0) dev_err(&client->dev, "cam2 rst gpio request failed %d\n", err); gpio_direction_output(cam2_rst, 1); if (dvdd) { err = regulator_enable(dvdd); if (err < 0) { dev_err(&client->dev, "cannot enable regulator vif %d\n", err); return -EINVAL; } } if (iovdd) { err = regulator_enable(iovdd); if (err < 0) { dev_err(&client->dev, "cannot enable regulator vdig %d\n", err); return -EINVAL; } } gpio_direction_output(cam2_rst, 1); return true; } static int tc358840_verify_chipid(struct v4l2_subdev *sd) { u16 cid = 0; cid = i2c_rd16(sd, CHIPID_ADDR); if (cid != TC358840_CHIPID) { v4l2_err(sd, "Invalid chip ID 0x%04X\n", cid); return -ENODEV; } v4l2_dbg(1, debug, sd, "TC358840 ChipID 0x%02x, Revision 0x%02x\n", (cid & MASK_CHIPID) >> 8, cid & MASK_REVID); return 0; } static int tc358840_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct i2c_client *client = v4l2_get_subdevdata(sd); dev_dbg(&client->dev, "%s:\n", __func__); return 0; } static const struct v4l2_subdev_internal_ops tc358840_subdev_internal_ops = { .open = tc358840_open, }; static const struct media_entity_operations tc358840_media_ops = { #ifdef CONFIG_MEDIA_CONTROLLER .link_validate = v4l2_subdev_link_validate, #endif }; static int tc358840_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct tc358840_state *state; struct v4l2_subdev *sd; int err; state = devm_kzalloc(&client->dev, sizeof(struct tc358840_state), GFP_KERNEL); if (!state) return -ENOMEM; if (client->dev.of_node) { if (!tc358840_parse_dt(&state->pdata, client)) { v4l_err(client, "Couldn't parse device tree\n"); return -ENODEV; } if (!tc358840_pwr_init(&state->pdata, client)) { v4l_err(client, "Couldn't power init\n"); return -ENODEV; } } else { if (!client->dev.platform_data) { v4l_err(client, "No platform data!\n"); return -ENODEV; } state->pdata = *(struct tc358840_platform_data *)client->dev.platform_data; } state->i2c_client = client; sd = &state->sd; i2c_set_clientdata(client, state); v4l2_i2c_subdev_init(sd, client, &tc358840_ops); /* Release System Reset (pin K8) */ v4l2_info(sd, "Releasing System Reset (gpio 0x%04X)\n", state->pdata.reset_gpio); if (!gpio_is_valid(state->pdata.reset_gpio)) { v4l_err(client, "Reset GPIO is invalid!\n"); return state->pdata.reset_gpio; } err = devm_gpio_request_one(&client->dev, state->pdata.reset_gpio, GPIOF_OUT_INIT_HIGH, "tc358840-reset"); if (err) { dev_err(&client->dev, "Failed to request Reset GPIO 0x%04X: %d\n", state->pdata.reset_gpio, err); return err; } /* */ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; v4l_info(client, "Chip found @ 7h%02X (%s)\n", client->addr, client->adapter->name); /* Verify chip ID */ err = tc358840_verify_chipid(sd); if (err) return err; /* Control Handlers */ v4l2_ctrl_handler_init(&state->hdl, 4); /* Custom controls */ state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL, V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0); state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl, &tc358840_ctrl_audio_sampling_rate, NULL); state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl, &tc358840_ctrl_audio_present, NULL); state->splitter_width_ctrl = v4l2_ctrl_new_custom(&state->hdl, &tc358840_ctrl_splitter_width, NULL); if (state->hdl.error) { err = state->hdl.error; goto err_hdl; } sd->ctrl_handler = &state->hdl; if (tc358840_update_controls(sd)) { err = -ENODEV; goto err_hdl; } /* Work Queues */ state->work_queues = create_singlethread_workqueue(client->name); if (!state->work_queues) { v4l2_err(sd, "Could not create work queue!\n"); err = -ENOMEM; goto err_hdl; } INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug, tc358840_delayed_work_enable_hotplug); INIT_DELAYED_WORK(&state->delayed_work_enable_interrupt, tc358840_delayed_work_enable_interrupt); INIT_WORK(&state->process_isr, tc358840_process_isr); mutex_init(&state->isr_lock); /* Initial Setup */ state->mbus_fmt_code = MEDIA_BUS_FMT_UYVY8_1X16; tc358840_initial_setup(sd); tc358840_set_csi_mbus_config(sd); /* Get interrupt */ if (client->irq) { err = devm_request_threaded_irq(&state->i2c_client->dev, client->irq, NULL, tc358840_irq_handler, IRQF_TRIGGER_RISING | IRQF_ONESHOT, sd->name, (void *)sd); if (err) { v4l2_err(sd, "Could not request interrupt %d!\n", client->irq); goto err_hdl; } } queue_delayed_work(state->work_queues, &state->delayed_work_enable_interrupt, msecs_to_jiffies(DELAY_ENABLE_INTERRUPT_MS)); /* * FIXME: Don't know what MASK_CSITX0_INT and MASK_CSITX1_INT do. * Thus, disable them for now... */ #if 0 i2c_wr16(sd, INTMASK, ~(MASK_HDMI_INT | MASK_CSITX0_INT | MASK_CSITX1_INT) & 0xFFFF); #endif i2c_wr16(sd, INTMASK, ~(MASK_HDMI_INT) & 0xFFFF); err = v4l2_ctrl_handler_setup(sd->ctrl_handler); if (err) { v4l2_err(sd, "Could not setup handler!\n"); goto err_hdl; } v4l2_info(sd, "%s found @ 7h%02X (%s)\n", client->name, client->addr, client->adapter->name); sd->dev = &client->dev; sd->internal_ops = &tc358840_subdev_internal_ops; sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; /* Set owner to NULL so we can unload the driver module */ sd->owner = NULL; #if defined(CONFIG_MEDIA_CONTROLLER) state->pad[0].flags = MEDIA_PAD_FL_SOURCE; state->pad[1].flags = MEDIA_PAD_FL_SOURCE; sd->entity.ops = &tc358840_media_ops; err = tegra_media_entity_init(&sd->entity, 2, state->pad, true, true); if (err < 0) { dev_err(&client->dev, "unable to init media entity\n"); return err; } #endif err = v4l2_async_register_subdev(sd); if (err == 0) return 0; err_hdl: v4l2_ctrl_handler_free(&state->hdl); return err; } static void tc358840_shutdown(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct tc358840_state *state = to_state(sd); v4l_dbg(1, debug, client, "%s()\n", __func__); cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); cancel_delayed_work_sync(&state->delayed_work_enable_interrupt); /* * Do this again since there is a race where delayed_work_stop_polling * was set when tc358840_delayed_work_poll was just scheduling the * next tc358840_delayed_work_poll call. So this second cancel will * prevent that rescheduled work from running. */ cancel_delayed_work_sync(&state->delayed_work_enable_interrupt); v4l_info(client, "shutdown tc358840 instance\n"); } static int tc358840_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); v4l_dbg(1, debug, client, "%s()\n", __func__); tc358840_shutdown(client); v4l2_async_unregister_subdev(sd); #if defined(CONFIG_MEDIA_CONTROLLER) media_entity_cleanup(&sd->entity); #endif v4l_info(client, "removed tc358840 instance\n"); return 0; } static const struct i2c_device_id tc358840_id[] = { { "tc358840", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, tc358840_id); #ifdef CONFIG_OF static const struct of_device_id tc358840_of_table[] = { { .compatible = "toshiba,tc358840" }, { } }; MODULE_DEVICE_TABLE(of, tc358840_of_table); #endif static struct i2c_driver tc358840_driver = { .driver = { .of_match_table = of_match_ptr(tc358840_of_table), .name = "tc358840", .owner = THIS_MODULE, }, .probe = tc358840_probe, .remove = tc358840_remove, .shutdown = tc358840_shutdown, .id_table = tc358840_id, }; module_i2c_driver(tc358840_driver); MODULE_DESCRIPTION("Driver for Toshiba TC358840 HDMI to CSI-2 Bridge"); MODULE_AUTHOR("Armin Weiss (weii@zhaw.ch)"); MODULE_LICENSE("GPL v2");