media: move CEC USB drivers to a separate directory

As CEC support doesn't depend on MEDIA_SUPPORT, let's
place the platform drivers outside the media menu.

As a side effect, instead of depends on	USB, drivers
just select it.

Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

8 files changed, 0 insertions, 1325 deletions

diff --git a/drivers/media/usb/Kconfig b/drivers/media/usb/Kconfig
index bf08393e38d1..00feadb217d8 100644
--- a/drivers/media/usb/Kconfig
+++ b/drivers/media/usb/Kconfig
@@ -66,11 +66,5 @@ source "drivers/media/usb/hackrf/Kconfig"
 source "drivers/media/usb/msi2500/Kconfig"
 endif
 
-if MEDIA_CEC_SUPPORT
-	comment "USB HDMI CEC adapters"
-source "drivers/media/usb/pulse8-cec/Kconfig"
-source "drivers/media/usb/rainshadow-cec/Kconfig"
-endif
-
 endif #MEDIA_USB_SUPPORT
 endif #USB
diff --git a/drivers/media/usb/Makefile b/drivers/media/usb/Makefile
index 169aa07c97bd..3eaff3149ef4 100644
--- a/drivers/media/usb/Makefile
+++ b/drivers/media/usb/Makefile
@@ -24,5 +24,3 @@ obj-$(CONFIG_VIDEO_EM28XX) += em28xx/
 obj-$(CONFIG_VIDEO_USBTV) += usbtv/
 obj-$(CONFIG_VIDEO_GO7007) += go7007/
 obj-$(CONFIG_DVB_AS102) += as102/
-obj-$(CONFIG_USB_PULSE8_CEC) += pulse8-cec/
-obj-$(CONFIG_USB_RAINSHADOW_CEC) += rainshadow-cec/
diff --git a/drivers/media/usb/pulse8-cec/Kconfig b/drivers/media/usb/pulse8-cec/Kconfig
deleted file mode 100644
index e802d30dbbee..000000000000
--- a/drivers/media/usb/pulse8-cec/Kconfig
+++ /dev/null
@@ -1,12 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-config USB_PULSE8_CEC
-	tristate "Pulse Eight HDMI CEC"
-	depends on USB_ACM
-	select CEC_CORE
-	select SERIO
-	select SERIO_SERPORT
-	help
-	  This is a cec driver for the Pulse Eight HDMI CEC device.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called pulse8-cec.
diff --git a/drivers/media/usb/pulse8-cec/Makefile b/drivers/media/usb/pulse8-cec/Makefile
deleted file mode 100644
index 7816c68bf928..000000000000
--- a/drivers/media/usb/pulse8-cec/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_USB_PULSE8_CEC) += pulse8-cec.o
diff --git a/drivers/media/usb/pulse8-cec/pulse8-cec.c b/drivers/media/usb/pulse8-cec/pulse8-cec.c
deleted file mode 100644
index 0655aa9ecf28..000000000000
--- a/drivers/media/usb/pulse8-cec/pulse8-cec.c
+++ /dev/null
@@ -1,909 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Pulse Eight HDMI CEC driver
- *
- * Copyright 2016 Hans Verkuil <hverkuil@xs4all.nl
- */
-
-/*
- * Notes:
- *
- * - Devices with firmware version < 2 do not store their configuration in
- *   EEPROM.
- *
- * - In autonomous mode, only messages from a TV will be acknowledged, even
- *   polling messages. Upon receiving a message from a TV, the dongle will
- *   respond to messages from any logical address.
- *
- * - In autonomous mode, the dongle will by default reply Feature Abort
- *   [Unrecognized Opcode] when it receives Give Device Vendor ID. It will
- *   however observe vendor ID's reported by other devices and possibly
- *   alter this behavior. When TV's (and TV's only) report that their vendor ID
- *   is LG (0x00e091), the dongle will itself reply that it has the same vendor
- *   ID, and it will respond to at least one vendor specific command.
- *
- * - In autonomous mode, the dongle is known to attempt wakeup if it receives
- *   <User Control Pressed> ["Power On"], ["Power] or ["Power Toggle"], or if it
- *   receives <Set Stream Path> with its own physical address. It also does this
- *   if it receives <Vendor Specific Command> [0x03 0x00] from an LG TV.
- */
-
-#include <linux/completion.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/workqueue.h>
-#include <linux/serio.h>
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-
-#include <media/cec.h>
-
-MODULE_AUTHOR("Hans Verkuil <hverkuil@xs4all.nl>");
-MODULE_DESCRIPTION("Pulse Eight HDMI CEC driver");
-MODULE_LICENSE("GPL");
-
-static int debug;
-static int persistent_config;
-module_param(debug, int, 0644);
-module_param(persistent_config, int, 0644);
-MODULE_PARM_DESC(debug, "debug level (0-2)");
-MODULE_PARM_DESC(persistent_config, "read config from persistent memory (0-1)");
-
-enum pulse8_msgcodes {
-	MSGCODE_NOTHING = 0,
-	MSGCODE_PING,
-	MSGCODE_TIMEOUT_ERROR,
-	MSGCODE_HIGH_ERROR,
-	MSGCODE_LOW_ERROR,
-	MSGCODE_FRAME_START,
-	MSGCODE_FRAME_DATA,
-	MSGCODE_RECEIVE_FAILED,
-	MSGCODE_COMMAND_ACCEPTED,	/* 0x08 */
-	MSGCODE_COMMAND_REJECTED,
-	MSGCODE_SET_ACK_MASK,
-	MSGCODE_TRANSMIT,
-	MSGCODE_TRANSMIT_EOM,
-	MSGCODE_TRANSMIT_IDLETIME,
-	MSGCODE_TRANSMIT_ACK_POLARITY,
-	MSGCODE_TRANSMIT_LINE_TIMEOUT,
-	MSGCODE_TRANSMIT_SUCCEEDED,	/* 0x10 */
-	MSGCODE_TRANSMIT_FAILED_LINE,
-	MSGCODE_TRANSMIT_FAILED_ACK,
-	MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA,
-	MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE,
-	MSGCODE_FIRMWARE_VERSION,
-	MSGCODE_START_BOOTLOADER,
-	MSGCODE_GET_BUILDDATE,
-	MSGCODE_SET_CONTROLLED,		/* 0x18 */
-	MSGCODE_GET_AUTO_ENABLED,
-	MSGCODE_SET_AUTO_ENABLED,
-	MSGCODE_GET_DEFAULT_LOGICAL_ADDRESS,
-	MSGCODE_SET_DEFAULT_LOGICAL_ADDRESS,
-	MSGCODE_GET_LOGICAL_ADDRESS_MASK,
-	MSGCODE_SET_LOGICAL_ADDRESS_MASK,
-	MSGCODE_GET_PHYSICAL_ADDRESS,
-	MSGCODE_SET_PHYSICAL_ADDRESS,	/* 0x20 */
-	MSGCODE_GET_DEVICE_TYPE,
-	MSGCODE_SET_DEVICE_TYPE,
-	MSGCODE_GET_HDMI_VERSION,
-	MSGCODE_SET_HDMI_VERSION,
-	MSGCODE_GET_OSD_NAME,
-	MSGCODE_SET_OSD_NAME,
-	MSGCODE_WRITE_EEPROM,
-	MSGCODE_GET_ADAPTER_TYPE,	/* 0x28 */
-	MSGCODE_SET_ACTIVE_SOURCE,
-
-	MSGCODE_FRAME_EOM = 0x80,
-	MSGCODE_FRAME_ACK = 0x40,
-};
-
-static const char * const pulse8_msgnames[] = {
-	"NOTHING",
-	"PING",
-	"TIMEOUT_ERROR",
-	"HIGH_ERROR",
-	"LOW_ERROR",
-	"FRAME_START",
-	"FRAME_DATA",
-	"RECEIVE_FAILED",
-	"COMMAND_ACCEPTED",
-	"COMMAND_REJECTED",
-	"SET_ACK_MASK",
-	"TRANSMIT",
-	"TRANSMIT_EOM",
-	"TRANSMIT_IDLETIME",
-	"TRANSMIT_ACK_POLARITY",
-	"TRANSMIT_LINE_TIMEOUT",
-	"TRANSMIT_SUCCEEDED",
-	"TRANSMIT_FAILED_LINE",
-	"TRANSMIT_FAILED_ACK",
-	"TRANSMIT_FAILED_TIMEOUT_DATA",
-	"TRANSMIT_FAILED_TIMEOUT_LINE",
-	"FIRMWARE_VERSION",
-	"START_BOOTLOADER",
-	"GET_BUILDDATE",
-	"SET_CONTROLLED",
-	"GET_AUTO_ENABLED",
-	"SET_AUTO_ENABLED",
-	"GET_DEFAULT_LOGICAL_ADDRESS",
-	"SET_DEFAULT_LOGICAL_ADDRESS",
-	"GET_LOGICAL_ADDRESS_MASK",
-	"SET_LOGICAL_ADDRESS_MASK",
-	"GET_PHYSICAL_ADDRESS",
-	"SET_PHYSICAL_ADDRESS",
-	"GET_DEVICE_TYPE",
-	"SET_DEVICE_TYPE",
-	"GET_HDMI_VERSION",
-	"SET_HDMI_VERSION",
-	"GET_OSD_NAME",
-	"SET_OSD_NAME",
-	"WRITE_EEPROM",
-	"GET_ADAPTER_TYPE",
-	"SET_ACTIVE_SOURCE",
-};
-
-static const char *pulse8_msgname(u8 cmd)
-{
-	static char unknown_msg[5];
-
-	if ((cmd & 0x3f) < ARRAY_SIZE(pulse8_msgnames))
-		return pulse8_msgnames[cmd & 0x3f];
-	snprintf(unknown_msg, sizeof(unknown_msg), "0x%02x", cmd);
-	return unknown_msg;
-}
-
-#define MSGSTART	0xff
-#define MSGEND		0xfe
-#define MSGESC		0xfd
-#define MSGOFFSET	3
-
-#define DATA_SIZE 256
-
-#define PING_PERIOD	(15 * HZ)
-
-#define NUM_MSGS 8
-
-struct pulse8 {
-	struct device *dev;
-	struct serio *serio;
-	struct cec_adapter *adap;
-	unsigned int vers;
-
-	struct delayed_work ping_eeprom_work;
-
-	struct work_struct irq_work;
-	struct cec_msg rx_msg[NUM_MSGS];
-	unsigned int rx_msg_cur_idx, rx_msg_num;
-	/* protect rx_msg_cur_idx and rx_msg_num */
-	spinlock_t msg_lock;
-	u8 new_rx_msg[CEC_MAX_MSG_SIZE];
-	u8 new_rx_msg_len;
-
-	struct work_struct tx_work;
-	u32 tx_done_status;
-	u32 tx_signal_free_time;
-	struct cec_msg tx_msg;
-	bool tx_msg_is_bcast;
-
-	struct completion cmd_done;
-	u8 data[DATA_SIZE];
-	unsigned int len;
-	u8 buf[DATA_SIZE];
-	unsigned int idx;
-	bool escape;
-	bool started;
-
-	/* locks access to the adapter */
-	struct mutex lock;
-	bool config_pending;
-	bool restoring_config;
-	bool autonomous;
-};
-
-static int pulse8_send(struct serio *serio, const u8 *command, u8 cmd_len)
-{
-	int err = 0;
-
-	err = serio_write(serio, MSGSTART);
-	if (err)
-		return err;
-	for (; !err && cmd_len; command++, cmd_len--) {
-		if (*command >= MSGESC) {
-			err = serio_write(serio, MSGESC);
-			if (!err)
-				err = serio_write(serio, *command - MSGOFFSET);
-		} else {
-			err = serio_write(serio, *command);
-		}
-	}
-	if (!err)
-		err = serio_write(serio, MSGEND);
-
-	return err;
-}
-
-static int pulse8_send_and_wait_once(struct pulse8 *pulse8,
-				     const u8 *cmd, u8 cmd_len,
-				     u8 response, u8 size)
-{
-	int err;
-
-	if (debug > 1)
-		dev_info(pulse8->dev, "transmit %s: %*ph\n",
-			 pulse8_msgname(cmd[0]), cmd_len, cmd);
-	init_completion(&pulse8->cmd_done);
-
-	err = pulse8_send(pulse8->serio, cmd, cmd_len);
-	if (err)
-		return err;
-
-	if (!wait_for_completion_timeout(&pulse8->cmd_done, HZ))
-		return -ETIMEDOUT;
-	if ((pulse8->data[0] & 0x3f) == MSGCODE_COMMAND_REJECTED &&
-	    cmd[0] != MSGCODE_SET_CONTROLLED &&
-	    cmd[0] != MSGCODE_SET_AUTO_ENABLED &&
-	    cmd[0] != MSGCODE_GET_BUILDDATE)
-		return -ENOTTY;
-	if (response &&
-	    ((pulse8->data[0] & 0x3f) != response || pulse8->len < size + 1)) {
-		dev_info(pulse8->dev, "transmit %s failed with %s\n",
-			 pulse8_msgname(cmd[0]),
-			 pulse8_msgname(pulse8->data[0]));
-		return -EIO;
-	}
-	return 0;
-}
-
-static int pulse8_send_and_wait(struct pulse8 *pulse8,
-				const u8 *cmd, u8 cmd_len, u8 response, u8 size)
-{
-	u8 cmd_sc[2];
-	int err;
-
-	err = pulse8_send_and_wait_once(pulse8, cmd, cmd_len, response, size);
-	if (err != -ENOTTY)
-		return err;
-
-	cmd_sc[0] = MSGCODE_SET_CONTROLLED;
-	cmd_sc[1] = 1;
-	err = pulse8_send_and_wait_once(pulse8, cmd_sc, 2,
-					MSGCODE_COMMAND_ACCEPTED, 1);
-	if (!err)
-		err = pulse8_send_and_wait_once(pulse8, cmd, cmd_len,
-						response, size);
-	return err == -ENOTTY ? -EIO : err;
-}
-
-static void pulse8_tx_work_handler(struct work_struct *work)
-{
-	struct pulse8 *pulse8 = container_of(work, struct pulse8, tx_work);
-	struct cec_msg *msg = &pulse8->tx_msg;
-	unsigned int i;
-	u8 cmd[2];
-	int err;
-
-	if (msg->len == 0)
-		return;
-
-	mutex_lock(&pulse8->lock);
-	cmd[0] = MSGCODE_TRANSMIT_IDLETIME;
-	cmd[1] = pulse8->tx_signal_free_time;
-	err = pulse8_send_and_wait(pulse8, cmd, 2,
-				   MSGCODE_COMMAND_ACCEPTED, 1);
-	cmd[0] = MSGCODE_TRANSMIT_ACK_POLARITY;
-	cmd[1] = cec_msg_is_broadcast(msg);
-	pulse8->tx_msg_is_bcast = cec_msg_is_broadcast(msg);
-	if (!err)
-		err = pulse8_send_and_wait(pulse8, cmd, 2,
-					   MSGCODE_COMMAND_ACCEPTED, 1);
-	cmd[0] = msg->len == 1 ? MSGCODE_TRANSMIT_EOM : MSGCODE_TRANSMIT;
-	cmd[1] = msg->msg[0];
-	if (!err)
-		err = pulse8_send_and_wait(pulse8, cmd, 2,
-					   MSGCODE_COMMAND_ACCEPTED, 1);
-	if (!err && msg->len > 1) {
-		for (i = 1; !err && i < msg->len; i++) {
-			cmd[0] = ((i == msg->len - 1)) ?
-				MSGCODE_TRANSMIT_EOM : MSGCODE_TRANSMIT;
-			cmd[1] = msg->msg[i];
-			err = pulse8_send_and_wait(pulse8, cmd, 2,
-						   MSGCODE_COMMAND_ACCEPTED, 1);
-		}
-	}
-	if (err && debug)
-		dev_info(pulse8->dev, "%s(0x%02x) failed with error %d for msg %*ph\n",
-			 pulse8_msgname(cmd[0]), cmd[1],
-			 err, msg->len, msg->msg);
-	msg->len = 0;
-	mutex_unlock(&pulse8->lock);
-	if (err)
-		cec_transmit_attempt_done(pulse8->adap, CEC_TX_STATUS_ERROR);
-}
-
-static void pulse8_irq_work_handler(struct work_struct *work)
-{
-	struct pulse8 *pulse8 =
-		container_of(work, struct pulse8, irq_work);
-	unsigned long flags;
-	u32 status;
-
-	spin_lock_irqsave(&pulse8->msg_lock, flags);
-	while (pulse8->rx_msg_num) {
-		spin_unlock_irqrestore(&pulse8->msg_lock, flags);
-		if (debug)
-			dev_info(pulse8->dev, "adap received %*ph\n",
-				 pulse8->rx_msg[pulse8->rx_msg_cur_idx].len,
-				 pulse8->rx_msg[pulse8->rx_msg_cur_idx].msg);
-		cec_received_msg(pulse8->adap,
-				 &pulse8->rx_msg[pulse8->rx_msg_cur_idx]);
-		spin_lock_irqsave(&pulse8->msg_lock, flags);
-		if (pulse8->rx_msg_num)
-			pulse8->rx_msg_num--;
-		pulse8->rx_msg_cur_idx =
-			(pulse8->rx_msg_cur_idx + 1) % NUM_MSGS;
-	}
-	spin_unlock_irqrestore(&pulse8->msg_lock, flags);
-
-	mutex_lock(&pulse8->lock);
-	status = pulse8->tx_done_status;
-	pulse8->tx_done_status = 0;
-	mutex_unlock(&pulse8->lock);
-	if (status)
-		cec_transmit_attempt_done(pulse8->adap, status);
-}
-
-static irqreturn_t pulse8_interrupt(struct serio *serio, unsigned char data,
-				    unsigned int flags)
-{
-	struct pulse8 *pulse8 = serio_get_drvdata(serio);
-	unsigned long irq_flags;
-	unsigned int idx;
-
-	if (!pulse8->started && data != MSGSTART)
-		return IRQ_HANDLED;
-	if (data == MSGESC) {
-		pulse8->escape = true;
-		return IRQ_HANDLED;
-	}
-	if (pulse8->escape) {
-		data += MSGOFFSET;
-		pulse8->escape = false;
-	} else if (data == MSGEND) {
-		u8 msgcode = pulse8->buf[0];
-
-		if (debug > 1)
-			dev_info(pulse8->dev, "received %s: %*ph\n",
-				 pulse8_msgname(msgcode),
-				 pulse8->idx, pulse8->buf);
-		switch (msgcode & 0x3f) {
-		case MSGCODE_FRAME_START:
-			/*
-			 * Test if we are receiving a new msg when a previous
-			 * message is still pending.
-			 */
-			if (!(msgcode & MSGCODE_FRAME_EOM)) {
-				pulse8->new_rx_msg_len = 1;
-				pulse8->new_rx_msg[0] = pulse8->buf[1];
-				break;
-			}
-			/* fall through */
-		case MSGCODE_FRAME_DATA:
-			if (pulse8->new_rx_msg_len < CEC_MAX_MSG_SIZE)
-				pulse8->new_rx_msg[pulse8->new_rx_msg_len++] =
-					pulse8->buf[1];
-			if (!(msgcode & MSGCODE_FRAME_EOM))
-				break;
-
-			spin_lock_irqsave(&pulse8->msg_lock, irq_flags);
-			idx = (pulse8->rx_msg_cur_idx + pulse8->rx_msg_num) %
-				NUM_MSGS;
-			if (pulse8->rx_msg_num == NUM_MSGS) {
-				dev_warn(pulse8->dev,
-					 "message queue is full, dropping %*ph\n",
-					 pulse8->new_rx_msg_len,
-					 pulse8->new_rx_msg);
-				spin_unlock_irqrestore(&pulse8->msg_lock,
-						       irq_flags);
-				pulse8->new_rx_msg_len = 0;
-				break;
-			}
-			pulse8->rx_msg_num++;
-			memcpy(pulse8->rx_msg[idx].msg, pulse8->new_rx_msg,
-			       pulse8->new_rx_msg_len);
-			pulse8->rx_msg[idx].len = pulse8->new_rx_msg_len;
-			spin_unlock_irqrestore(&pulse8->msg_lock, irq_flags);
-			schedule_work(&pulse8->irq_work);
-			pulse8->new_rx_msg_len = 0;
-			break;
-		case MSGCODE_TRANSMIT_SUCCEEDED:
-			WARN_ON(pulse8->tx_done_status);
-			pulse8->tx_done_status = CEC_TX_STATUS_OK;
-			schedule_work(&pulse8->irq_work);
-			break;
-		case MSGCODE_TRANSMIT_FAILED_ACK:
-			/*
-			 * A NACK for a broadcast message makes no sense, these
-			 * seem to be spurious messages and are skipped.
-			 */
-			if (pulse8->tx_msg_is_bcast)
-				break;
-			WARN_ON(pulse8->tx_done_status);
-			pulse8->tx_done_status = CEC_TX_STATUS_NACK;
-			schedule_work(&pulse8->irq_work);
-			break;
-		case MSGCODE_TRANSMIT_FAILED_LINE:
-		case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
-		case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
-			WARN_ON(pulse8->tx_done_status);
-			pulse8->tx_done_status = CEC_TX_STATUS_ERROR;
-			schedule_work(&pulse8->irq_work);
-			break;
-		case MSGCODE_HIGH_ERROR:
-		case MSGCODE_LOW_ERROR:
-		case MSGCODE_RECEIVE_FAILED:
-		case MSGCODE_TIMEOUT_ERROR:
-			pulse8->new_rx_msg_len = 0;
-			break;
-		case MSGCODE_COMMAND_ACCEPTED:
-		case MSGCODE_COMMAND_REJECTED:
-		default:
-			if (pulse8->idx == 0)
-				break;
-			memcpy(pulse8->data, pulse8->buf, pulse8->idx);
-			pulse8->len = pulse8->idx;
-			complete(&pulse8->cmd_done);
-			break;
-		}
-		pulse8->idx = 0;
-		pulse8->started = false;
-		return IRQ_HANDLED;
-	} else if (data == MSGSTART) {
-		pulse8->idx = 0;
-		pulse8->started = true;
-		return IRQ_HANDLED;
-	}
-
-	if (pulse8->idx >= DATA_SIZE) {
-		dev_dbg(pulse8->dev,
-			"throwing away %d bytes of garbage\n", pulse8->idx);
-		pulse8->idx = 0;
-	}
-	pulse8->buf[pulse8->idx++] = data;
-	return IRQ_HANDLED;
-}
-
-static int pulse8_cec_adap_enable(struct cec_adapter *adap, bool enable)
-{
-	struct pulse8 *pulse8 = cec_get_drvdata(adap);
-	u8 cmd[16];
-	int err;
-
-	mutex_lock(&pulse8->lock);
-	cmd[0] = MSGCODE_SET_CONTROLLED;
-	cmd[1] = enable;
-	err = pulse8_send_and_wait(pulse8, cmd, 2,
-				   MSGCODE_COMMAND_ACCEPTED, 1);
-	if (!enable) {
-		pulse8->rx_msg_num = 0;
-		pulse8->tx_done_status = 0;
-	}
-	mutex_unlock(&pulse8->lock);
-	return enable ? err : 0;
-}
-
-static int pulse8_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
-{
-	struct pulse8 *pulse8 = cec_get_drvdata(adap);
-	u16 mask = 0;
-	u16 pa = adap->phys_addr;
-	u8 cmd[16];
-	int err = 0;
-
-	mutex_lock(&pulse8->lock);
-	if (log_addr != CEC_LOG_ADDR_INVALID)
-		mask = 1 << log_addr;
-	cmd[0] = MSGCODE_SET_ACK_MASK;
-	cmd[1] = mask >> 8;
-	cmd[2] = mask & 0xff;
-	err = pulse8_send_and_wait(pulse8, cmd, 3,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if ((err && mask != 0) || pulse8->restoring_config)
-		goto unlock;
-
-	cmd[0] = MSGCODE_SET_AUTO_ENABLED;
-	cmd[1] = log_addr == CEC_LOG_ADDR_INVALID ? 0 : 1;
-	err = pulse8_send_and_wait(pulse8, cmd, 2,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if (err)
-		goto unlock;
-	pulse8->autonomous = cmd[1];
-	if (log_addr == CEC_LOG_ADDR_INVALID)
-		goto unlock;
-
-	cmd[0] = MSGCODE_SET_DEVICE_TYPE;
-	cmd[1] = adap->log_addrs.primary_device_type[0];
-	err = pulse8_send_and_wait(pulse8, cmd, 2,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if (err)
-		goto unlock;
-
-	switch (adap->log_addrs.primary_device_type[0]) {
-	case CEC_OP_PRIM_DEVTYPE_TV:
-		mask = CEC_LOG_ADDR_MASK_TV;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_RECORD:
-		mask = CEC_LOG_ADDR_MASK_RECORD;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_TUNER:
-		mask = CEC_LOG_ADDR_MASK_TUNER;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_PLAYBACK:
-		mask = CEC_LOG_ADDR_MASK_PLAYBACK;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM:
-		mask = CEC_LOG_ADDR_MASK_AUDIOSYSTEM;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_SWITCH:
-		mask = CEC_LOG_ADDR_MASK_UNREGISTERED;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_PROCESSOR:
-		mask = CEC_LOG_ADDR_MASK_SPECIFIC;
-		break;
-	default:
-		mask = 0;
-		break;
-	}
-	cmd[0] = MSGCODE_SET_LOGICAL_ADDRESS_MASK;
-	cmd[1] = mask >> 8;
-	cmd[2] = mask & 0xff;
-	err = pulse8_send_and_wait(pulse8, cmd, 3,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if (err)
-		goto unlock;
-
-	cmd[0] = MSGCODE_SET_DEFAULT_LOGICAL_ADDRESS;
-	cmd[1] = log_addr;
-	err = pulse8_send_and_wait(pulse8, cmd, 2,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if (err)
-		goto unlock;
-
-	cmd[0] = MSGCODE_SET_PHYSICAL_ADDRESS;
-	cmd[1] = pa >> 8;
-	cmd[2] = pa & 0xff;
-	err = pulse8_send_and_wait(pulse8, cmd, 3,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if (err)
-		goto unlock;
-
-	cmd[0] = MSGCODE_SET_HDMI_VERSION;
-	cmd[1] = adap->log_addrs.cec_version;
-	err = pulse8_send_and_wait(pulse8, cmd, 2,
-				   MSGCODE_COMMAND_ACCEPTED, 0);
-	if (err)
-		goto unlock;
-
-	if (adap->log_addrs.osd_name[0]) {
-		size_t osd_len = strlen(adap->log_addrs.osd_name);
-		char *osd_str = cmd + 1;
-
-		cmd[0] = MSGCODE_SET_OSD_NAME;
-		strscpy(cmd + 1, adap->log_addrs.osd_name, sizeof(cmd) - 1);
-		if (osd_len < 4) {
-			memset(osd_str + osd_len, ' ', 4 - osd_len);
-			osd_len = 4;
-			osd_str[osd_len] = '\0';
-			strscpy(adap->log_addrs.osd_name, osd_str,
-				sizeof(adap->log_addrs.osd_name));
-		}
-		err = pulse8_send_and_wait(pulse8, cmd, 1 + osd_len,
-					   MSGCODE_COMMAND_ACCEPTED, 0);
-		if (err)
-			goto unlock;
-	}
-
-unlock:
-	if (pulse8->restoring_config)
-		pulse8->restoring_config = false;
-	else
-		pulse8->config_pending = true;
-	mutex_unlock(&pulse8->lock);
-	return log_addr == CEC_LOG_ADDR_INVALID ? 0 : err;
-}
-
-static int pulse8_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
-				    u32 signal_free_time, struct cec_msg *msg)
-{
-	struct pulse8 *pulse8 = cec_get_drvdata(adap);
-
-	pulse8->tx_msg = *msg;
-	if (debug)
-		dev_info(pulse8->dev, "adap transmit %*ph\n",
-			 msg->len, msg->msg);
-	pulse8->tx_signal_free_time = signal_free_time;
-	schedule_work(&pulse8->tx_work);
-	return 0;
-}
-
-static void pulse8_cec_adap_free(struct cec_adapter *adap)
-{
-	struct pulse8 *pulse8 = cec_get_drvdata(adap);
-
-	cancel_delayed_work_sync(&pulse8->ping_eeprom_work);
-	cancel_work_sync(&pulse8->irq_work);
-	cancel_work_sync(&pulse8->tx_work);
-	kfree(pulse8);
-}
-
-static const struct cec_adap_ops pulse8_cec_adap_ops = {
-	.adap_enable = pulse8_cec_adap_enable,
-	.adap_log_addr = pulse8_cec_adap_log_addr,
-	.adap_transmit = pulse8_cec_adap_transmit,
-	.adap_free = pulse8_cec_adap_free,
-};
-
-static void pulse8_disconnect(struct serio *serio)
-{
-	struct pulse8 *pulse8 = serio_get_drvdata(serio);
-
-	cec_unregister_adapter(pulse8->adap);
-	pulse8->serio = NULL;
-	serio_set_drvdata(serio, NULL);
-	serio_close(serio);
-}
-
-static int pulse8_setup(struct pulse8 *pulse8, struct serio *serio,
-			struct cec_log_addrs *log_addrs, u16 *pa)
-{
-	u8 *data = pulse8->data + 1;
-	u8 cmd[2];
-	int err;
-	struct tm tm;
-	time64_t date;
-
-	pulse8->vers = 0;
-
-	cmd[0] = MSGCODE_FIRMWARE_VERSION;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 2);
-	if (err)
-		return err;
-	pulse8->vers = (data[0] << 8) | data[1];
-	dev_info(pulse8->dev, "Firmware version %04x\n", pulse8->vers);
-	if (pulse8->vers < 2) {
-		*pa = CEC_PHYS_ADDR_INVALID;
-		return 0;
-	}
-
-	cmd[0] = MSGCODE_GET_BUILDDATE;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 4);
-	if (err)
-		return err;
-	date = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];
-	time64_to_tm(date, 0, &tm);
-	dev_info(pulse8->dev, "Firmware build date %04ld.%02d.%02d %02d:%02d:%02d\n",
-		 tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
-		 tm.tm_hour, tm.tm_min, tm.tm_sec);
-
-	dev_dbg(pulse8->dev, "Persistent config:\n");
-	cmd[0] = MSGCODE_GET_AUTO_ENABLED;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1);
-	if (err)
-		return err;
-	pulse8->autonomous = data[0];
-	dev_dbg(pulse8->dev, "Autonomous mode: %s",
-		data[0] ? "on" : "off");
-
-	cmd[0] = MSGCODE_GET_DEVICE_TYPE;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1);
-	if (err)
-		return err;
-	log_addrs->primary_device_type[0] = data[0];
-	dev_dbg(pulse8->dev, "Primary device type: %d\n", data[0]);
-	switch (log_addrs->primary_device_type[0]) {
-	case CEC_OP_PRIM_DEVTYPE_TV:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_TV;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_TV;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_RECORD:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_RECORD;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_RECORD;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_TUNER:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_TUNER;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_TUNER;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_PLAYBACK:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_PLAYBACK;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_PLAYBACK;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_PLAYBACK;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_SWITCH:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH;
-		break;
-	case CEC_OP_PRIM_DEVTYPE_PROCESSOR:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_SPECIFIC;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH;
-		break;
-	default:
-		log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED;
-		log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH;
-		dev_info(pulse8->dev, "Unknown Primary Device Type: %d\n",
-			 log_addrs->primary_device_type[0]);
-		break;
-	}
-
-	cmd[0] = MSGCODE_GET_LOGICAL_ADDRESS_MASK;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 2);
-	if (err)
-		return err;
-	log_addrs->log_addr_mask = (data[0] << 8) | data[1];
-	dev_dbg(pulse8->dev, "Logical address ACK mask: %x\n",
-		log_addrs->log_addr_mask);
-	if (log_addrs->log_addr_mask)
-		log_addrs->num_log_addrs = 1;
-
-	cmd[0] = MSGCODE_GET_PHYSICAL_ADDRESS;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1);
-	if (err)
-		return err;
-	*pa = (data[0] << 8) | data[1];
-	dev_dbg(pulse8->dev, "Physical address: %x.%x.%x.%x\n",
-		cec_phys_addr_exp(*pa));
-
-	cmd[0] = MSGCODE_GET_HDMI_VERSION;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1);
-	if (err)
-		return err;
-	log_addrs->cec_version = data[0];
-	dev_dbg(pulse8->dev, "CEC version: %d\n", log_addrs->cec_version);
-
-	cmd[0] = MSGCODE_GET_OSD_NAME;
-	err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 0);
-	if (err)
-		return err;
-	strscpy(log_addrs->osd_name, data, sizeof(log_addrs->osd_name));
-	dev_dbg(pulse8->dev, "OSD name: %s\n", log_addrs->osd_name);
-
-	return 0;
-}
-
-static int pulse8_apply_persistent_config(struct pulse8 *pulse8,
-					  struct cec_log_addrs *log_addrs,
-					  u16 pa)
-{
-	int err;
-
-	err = cec_s_log_addrs(pulse8->adap, log_addrs, false);
-	if (err)
-		return err;
-
-	cec_s_phys_addr(pulse8->adap, pa, false);
-
-	return 0;
-}
-
-static void pulse8_ping_eeprom_work_handler(struct work_struct *work)
-{
-	struct pulse8 *pulse8 =
-		container_of(work, struct pulse8, ping_eeprom_work.work);
-	u8 cmd;
-
-	mutex_lock(&pulse8->lock);
-	cmd = MSGCODE_PING;
-	pulse8_send_and_wait(pulse8, &cmd, 1,
-			     MSGCODE_COMMAND_ACCEPTED, 0);
-
-	if (pulse8->vers < 2)
-		goto unlock;
-
-	if (pulse8->config_pending && persistent_config) {
-		dev_dbg(pulse8->dev, "writing pending config to EEPROM\n");
-		cmd = MSGCODE_WRITE_EEPROM;
-		if (pulse8_send_and_wait(pulse8, &cmd, 1,
-					 MSGCODE_COMMAND_ACCEPTED, 0))
-			dev_info(pulse8->dev, "failed to write pending config to EEPROM\n");
-		else
-			pulse8->config_pending = false;
-	}
-unlock:
-	schedule_delayed_work(&pulse8->ping_eeprom_work, PING_PERIOD);
-	mutex_unlock(&pulse8->lock);
-}
-
-static int pulse8_connect(struct serio *serio, struct serio_driver *drv)
-{
-	u32 caps = CEC_CAP_DEFAULTS | CEC_CAP_PHYS_ADDR | CEC_CAP_MONITOR_ALL;
-	struct pulse8 *pulse8;
-	int err = -ENOMEM;
-	struct cec_log_addrs log_addrs = {};
-	u16 pa = CEC_PHYS_ADDR_INVALID;
-
-	pulse8 = kzalloc(sizeof(*pulse8), GFP_KERNEL);
-
-	if (!pulse8)
-		return -ENOMEM;
-
-	pulse8->serio = serio;
-	pulse8->adap = cec_allocate_adapter(&pulse8_cec_adap_ops, pulse8,
-					    dev_name(&serio->dev), caps, 1);
-	err = PTR_ERR_OR_ZERO(pulse8->adap);
-	if (err < 0)
-		goto free_device;
-
-	pulse8->dev = &serio->dev;
-	serio_set_drvdata(serio, pulse8);
-	INIT_WORK(&pulse8->irq_work, pulse8_irq_work_handler);
-	INIT_WORK(&pulse8->tx_work, pulse8_tx_work_handler);
-	INIT_DELAYED_WORK(&pulse8->ping_eeprom_work,
-			  pulse8_ping_eeprom_work_handler);
-	mutex_init(&pulse8->lock);
-	spin_lock_init(&pulse8->msg_lock);
-	pulse8->config_pending = false;
-
-	err = serio_open(serio, drv);
-	if (err)
-		goto delete_adap;
-
-	err = pulse8_setup(pulse8, serio, &log_addrs, &pa);
-	if (err)
-		goto close_serio;
-
-	err = cec_register_adapter(pulse8->adap, &serio->dev);
-	if (err < 0)
-		goto close_serio;
-
-	pulse8->dev = &pulse8->adap->devnode.dev;
-
-	if (persistent_config && pulse8->autonomous) {
-		err = pulse8_apply_persistent_config(pulse8, &log_addrs, pa);
-		if (err)
-			goto close_serio;
-		pulse8->restoring_config = true;
-	}
-
-	schedule_delayed_work(&pulse8->ping_eeprom_work, PING_PERIOD);
-
-	return 0;
-
-close_serio:
-	pulse8->serio = NULL;
-	serio_set_drvdata(serio, NULL);
-	serio_close(serio);
-delete_adap:
-	cec_delete_adapter(pulse8->adap);
-free_device:
-	kfree(pulse8);
-	return err;
-}
-
-static const struct serio_device_id pulse8_serio_ids[] = {
-	{
-		.type	= SERIO_RS232,
-		.proto	= SERIO_PULSE8_CEC,
-		.id	= SERIO_ANY,
-		.extra	= SERIO_ANY,
-	},
-	{ 0 }
-};
-
-MODULE_DEVICE_TABLE(serio, pulse8_serio_ids);
-
-static struct serio_driver pulse8_drv = {
-	.driver		= {
-		.name	= "pulse8-cec",
-	},
-	.description	= "Pulse Eight HDMI CEC driver",
-	.id_table	= pulse8_serio_ids,
-	.interrupt	= pulse8_interrupt,
-	.connect	= pulse8_connect,
-	.disconnect	= pulse8_disconnect,
-};
-
-module_serio_driver(pulse8_drv);
diff --git a/drivers/media/usb/rainshadow-cec/Kconfig b/drivers/media/usb/rainshadow-cec/Kconfig
deleted file mode 100644
index b481c5157d7e..000000000000
--- a/drivers/media/usb/rainshadow-cec/Kconfig
+++ /dev/null
@@ -1,12 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-config USB_RAINSHADOW_CEC
-	tristate "RainShadow Tech HDMI CEC"
-	depends on USB_ACM
-	select CEC_CORE
-	select SERIO
-	select SERIO_SERPORT
-	help
-	  This is a cec driver for the RainShadow Tech HDMI CEC device.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called rainshadow-cec.
diff --git a/drivers/media/usb/rainshadow-cec/Makefile b/drivers/media/usb/rainshadow-cec/Makefile
deleted file mode 100644
index 47b33c574c3e..000000000000
--- a/drivers/media/usb/rainshadow-cec/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_USB_RAINSHADOW_CEC) += rainshadow-cec.o
diff --git a/drivers/media/usb/rainshadow-cec/rainshadow-cec.c b/drivers/media/usb/rainshadow-cec/rainshadow-cec.c
deleted file mode 100644
index ee870ea1a886..000000000000
--- a/drivers/media/usb/rainshadow-cec/rainshadow-cec.c
+++ /dev/null
@@ -1,380 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * RainShadow Tech HDMI CEC driver
- *
- * Copyright 2016 Hans Verkuil <hverkuil@xs4all.nl
- */
-
-/*
- * Notes:
- *
- * The higher level protocols are currently disabled. This can be added
- * later, similar to how this is done for the Pulse Eight CEC driver.
- *
- * Documentation of the protocol is available here:
- *
- * http://rainshadowtech.com/doc/HDMICECtoUSBandRS232v2.0.pdf
- */
-
-#include <linux/completion.h>
-#include <linux/ctype.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/serio.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/time.h>
-#include <linux/workqueue.h>
-
-#include <media/cec.h>
-
-MODULE_AUTHOR("Hans Verkuil <hverkuil@xs4all.nl>");
-MODULE_DESCRIPTION("RainShadow Tech HDMI CEC driver");
-MODULE_LICENSE("GPL");
-
-#define DATA_SIZE 256
-
-struct rain {
-	struct device *dev;
-	struct serio *serio;
-	struct cec_adapter *adap;
-	struct completion cmd_done;
-	struct work_struct work;
-
-	/* Low-level ringbuffer, collecting incoming characters */
-	char buf[DATA_SIZE];
-	unsigned int buf_rd_idx;
-	unsigned int buf_wr_idx;
-	unsigned int buf_len;
-	spinlock_t buf_lock;
-
-	/* command buffer */
-	char cmd[DATA_SIZE];
-	unsigned int cmd_idx;
-	bool cmd_started;
-
-	/* reply to a command, only used to store the firmware version */
-	char cmd_reply[DATA_SIZE];
-
-	struct mutex write_lock;
-};
-
-static void rain_process_msg(struct rain *rain)
-{
-	struct cec_msg msg = {};
-	const char *cmd = rain->cmd + 3;
-	int stat = -1;
-
-	for (; *cmd; cmd++) {
-		if (!isxdigit(*cmd))
-			continue;
-		if (isxdigit(cmd[0]) && isxdigit(cmd[1])) {
-			if (msg.len == CEC_MAX_MSG_SIZE)
-				break;
-			if (hex2bin(msg.msg + msg.len, cmd, 1))
-				continue;
-			msg.len++;
-			cmd++;
-			continue;
-		}
-		if (!cmd[1])
-			stat = hex_to_bin(cmd[0]);
-		break;
-	}
-
-	if (rain->cmd[0] == 'R') {
-		if (stat == 1 || stat == 2)
-			cec_received_msg(rain->adap, &msg);
-		return;
-	}
-
-	switch (stat) {
-	case 1:
-		cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_OK);
-		break;
-	case 2:
-		cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_NACK);
-		break;
-	default:
-		cec_transmit_attempt_done(rain->adap, CEC_TX_STATUS_LOW_DRIVE);
-		break;
-	}
-}
-
-static void rain_irq_work_handler(struct work_struct *work)
-{
-	struct rain *rain =
-		container_of(work, struct rain, work);
-
-	while (true) {
-		unsigned long flags;
-		char data;
-
-		spin_lock_irqsave(&rain->buf_lock, flags);
-		if (!rain->buf_len) {
-			spin_unlock_irqrestore(&rain->buf_lock, flags);
-			break;
-		}
-
-		data = rain->buf[rain->buf_rd_idx];
-		rain->buf_len--;
-		rain->buf_rd_idx = (rain->buf_rd_idx + 1) & 0xff;
-
-		spin_unlock_irqrestore(&rain->buf_lock, flags);
-
-		if (!rain->cmd_started && data != '?')
-			continue;
-
-		switch (data) {
-		case '\r':
-			rain->cmd[rain->cmd_idx] = '\0';
-			dev_dbg(rain->dev, "received: %s\n", rain->cmd);
-			if (!memcmp(rain->cmd, "REC", 3) ||
-			    !memcmp(rain->cmd, "STA", 3)) {
-				rain_process_msg(rain);
-			} else {
-				strscpy(rain->cmd_reply, rain->cmd,
-					sizeof(rain->cmd_reply));
-				complete(&rain->cmd_done);
-			}
-			rain->cmd_idx = 0;
-			rain->cmd_started = false;
-			break;
-
-		case '\n':
-			rain->cmd_idx = 0;
-			rain->cmd_started = false;
-			break;
-
-		case '?':
-			rain->cmd_idx = 0;
-			rain->cmd_started = true;
-			break;
-
-		default:
-			if (rain->cmd_idx >= DATA_SIZE - 1) {
-				dev_dbg(rain->dev,
-					"throwing away %d bytes of garbage\n", rain->cmd_idx);
-				rain->cmd_idx = 0;
-			}
-			rain->cmd[rain->cmd_idx++] = data;
-			break;
-		}
-	}
-}
-
-static irqreturn_t rain_interrupt(struct serio *serio, unsigned char data,
-				    unsigned int flags)
-{
-	struct rain *rain = serio_get_drvdata(serio);
-
-	if (rain->buf_len == DATA_SIZE) {
-		dev_warn_once(rain->dev, "buffer overflow\n");
-		return IRQ_HANDLED;
-	}
-	spin_lock(&rain->buf_lock);
-	rain->buf_len++;
-	rain->buf[rain->buf_wr_idx] = data;
-	rain->buf_wr_idx = (rain->buf_wr_idx + 1) & 0xff;
-	spin_unlock(&rain->buf_lock);
-	schedule_work(&rain->work);
-	return IRQ_HANDLED;
-}
-
-static void rain_disconnect(struct serio *serio)
-{
-	struct rain *rain = serio_get_drvdata(serio);
-
-	cancel_work_sync(&rain->work);
-	cec_unregister_adapter(rain->adap);
-	dev_info(&serio->dev, "disconnected\n");
-	serio_close(serio);
-	serio_set_drvdata(serio, NULL);
-	kfree(rain);
-}
-
-static int rain_send(struct rain *rain, const char *command)
-{
-	int err = serio_write(rain->serio, '!');
-
-	dev_dbg(rain->dev, "send: %s\n", command);
-	while (!err && *command)
-		err = serio_write(rain->serio, *command++);
-	if (!err)
-		err = serio_write(rain->serio, '~');
-
-	return err;
-}
-
-static int rain_send_and_wait(struct rain *rain,
-			      const char *cmd, const char *reply)
-{
-	int err;
-
-	init_completion(&rain->cmd_done);
-
-	mutex_lock(&rain->write_lock);
-	err = rain_send(rain, cmd);
-	if (err)
-		goto err;
-
-	if (!wait_for_completion_timeout(&rain->cmd_done, HZ)) {
-		err = -ETIMEDOUT;
-		goto err;
-	}
-	if (reply && strncmp(rain->cmd_reply, reply, strlen(reply))) {
-		dev_dbg(rain->dev,
-			 "transmit of '%s': received '%s' instead of '%s'\n",
-			 cmd, rain->cmd_reply, reply);
-		err = -EIO;
-	}
-err:
-	mutex_unlock(&rain->write_lock);
-	return err;
-}
-
-static int rain_setup(struct rain *rain, struct serio *serio,
-			struct cec_log_addrs *log_addrs, u16 *pa)
-{
-	int err;
-
-	err = rain_send_and_wait(rain, "R", "REV");
-	if (err)
-		return err;
-	dev_info(rain->dev, "Firmware version %s\n", rain->cmd_reply + 4);
-
-	err = rain_send_and_wait(rain, "Q 1", "QTY");
-	if (err)
-		return err;
-	err = rain_send_and_wait(rain, "c0000", "CFG");
-	if (err)
-		return err;
-	return rain_send_and_wait(rain, "A F 0000", "ADR");
-}
-
-static int rain_cec_adap_enable(struct cec_adapter *adap, bool enable)
-{
-	return 0;
-}
-
-static int rain_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
-{
-	struct rain *rain = cec_get_drvdata(adap);
-	u8 cmd[16];
-
-	if (log_addr == CEC_LOG_ADDR_INVALID)
-		log_addr = CEC_LOG_ADDR_UNREGISTERED;
-	snprintf(cmd, sizeof(cmd), "A %x", log_addr);
-	return rain_send_and_wait(rain, cmd, "ADR");
-}
-
-static int rain_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
-				    u32 signal_free_time, struct cec_msg *msg)
-{
-	struct rain *rain = cec_get_drvdata(adap);
-	char cmd[2 * CEC_MAX_MSG_SIZE + 16];
-	unsigned int i;
-	int err;
-
-	if (msg->len == 1) {
-		snprintf(cmd, sizeof(cmd), "x%x", cec_msg_destination(msg));
-	} else {
-		char hex[3];
-
-		snprintf(cmd, sizeof(cmd), "x%x %02x ",
-			 cec_msg_destination(msg), msg->msg[1]);
-		for (i = 2; i < msg->len; i++) {
-			snprintf(hex, sizeof(hex), "%02x", msg->msg[i]);
-			strlcat(cmd, hex, sizeof(cmd));
-		}
-	}
-	mutex_lock(&rain->write_lock);
-	err = rain_send(rain, cmd);
-	mutex_unlock(&rain->write_lock);
-	return err;
-}
-
-static const struct cec_adap_ops rain_cec_adap_ops = {
-	.adap_enable = rain_cec_adap_enable,
-	.adap_log_addr = rain_cec_adap_log_addr,
-	.adap_transmit = rain_cec_adap_transmit,
-};
-
-static int rain_connect(struct serio *serio, struct serio_driver *drv)
-{
-	u32 caps = CEC_CAP_DEFAULTS | CEC_CAP_PHYS_ADDR | CEC_CAP_MONITOR_ALL;
-	struct rain *rain;
-	int err = -ENOMEM;
-	struct cec_log_addrs log_addrs = {};
-	u16 pa = CEC_PHYS_ADDR_INVALID;
-
-	rain = kzalloc(sizeof(*rain), GFP_KERNEL);
-
-	if (!rain)
-		return -ENOMEM;
-
-	rain->serio = serio;
-	rain->adap = cec_allocate_adapter(&rain_cec_adap_ops, rain,
-					  dev_name(&serio->dev), caps, 1);
-	err = PTR_ERR_OR_ZERO(rain->adap);
-	if (err < 0)
-		goto free_device;
-
-	rain->dev = &serio->dev;
-	serio_set_drvdata(serio, rain);
-	INIT_WORK(&rain->work, rain_irq_work_handler);
-	mutex_init(&rain->write_lock);
-	spin_lock_init(&rain->buf_lock);
-
-	err = serio_open(serio, drv);
-	if (err)
-		goto delete_adap;
-
-	err = rain_setup(rain, serio, &log_addrs, &pa);
-	if (err)
-		goto close_serio;
-
-	err = cec_register_adapter(rain->adap, &serio->dev);
-	if (err < 0)
-		goto close_serio;
-
-	rain->dev = &rain->adap->devnode.dev;
-	return 0;
-
-close_serio:
-	serio_close(serio);
-delete_adap:
-	cec_delete_adapter(rain->adap);
-	serio_set_drvdata(serio, NULL);
-free_device:
-	kfree(rain);
-	return err;
-}
-
-static const struct serio_device_id rain_serio_ids[] = {
-	{
-		.type	= SERIO_RS232,
-		.proto	= SERIO_RAINSHADOW_CEC,
-		.id	= SERIO_ANY,
-		.extra	= SERIO_ANY,
-	},
-	{ 0 }
-};
-
-MODULE_DEVICE_TABLE(serio, rain_serio_ids);
-
-static struct serio_driver rain_drv = {
-	.driver		= {
-		.name	= "rainshadow-cec",
-	},
-	.description	= "RainShadow Tech HDMI CEC driver",
-	.id_table	= rain_serio_ids,
-	.interrupt	= rain_interrupt,
-	.connect	= rain_connect,
-	.disconnect	= rain_disconnect,
-};
-
-module_serio_driver(rain_drv);