Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * vivid-cec.c - A Virtual Video Test Driver, cec emulation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright 2016 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <media/cec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include "vivid-core.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include "vivid-cec.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #define CEC_TIM_START_BIT_TOTAL		4500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #define CEC_TIM_START_BIT_LOW		3700
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define CEC_TIM_START_BIT_HIGH		800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define CEC_TIM_DATA_BIT_TOTAL		2400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define CEC_TIM_DATA_BIT_0_LOW		1500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define CEC_TIM_DATA_BIT_0_HIGH		900
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define CEC_TIM_DATA_BIT_1_LOW		600
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define CEC_TIM_DATA_BIT_1_HIGH		1800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) void vivid_cec_bus_free_work(struct vivid_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	spin_lock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	while (!list_empty(&dev->cec_work_list)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		struct vivid_cec_work *cw =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 			list_first_entry(&dev->cec_work_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 					 struct vivid_cec_work, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 		spin_unlock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		cancel_delayed_work_sync(&cw->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		spin_lock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		list_del(&cw->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		cec_transmit_attempt_done(cw->adap, CEC_TX_STATUS_LOW_DRIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		kfree(cw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	spin_unlock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static bool vivid_cec_find_dest_adap(struct vivid_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 				     struct cec_adapter *adap, u8 dest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	if (dest >= 0xf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	if (adap != dev->cec_rx_adap && dev->cec_rx_adap &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	    dev->cec_rx_adap->is_configured &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	    cec_has_log_addr(dev->cec_rx_adap, dest))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		if (adap == dev->cec_tx_adap[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		if (!dev->cec_tx_adap[i]->is_configured)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		if (cec_has_log_addr(dev->cec_tx_adap[i], dest))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) static void vivid_cec_pin_adap_events(struct cec_adapter *adap, ktime_t ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 				      const struct cec_msg *msg, bool nacked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	unsigned int len = nacked ? 1 : msg->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	bool bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	if (adap == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	 * Suffix ULL on constant 10 makes the expression
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	 * CEC_TIM_START_BIT_TOTAL + 10ULL * len * CEC_TIM_DATA_BIT_TOTAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	 * to be evaluated using 64-bit unsigned arithmetic (u64), which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	 * is what ktime_sub_us expects as second argument.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	ts = ktime_sub_us(ts, CEC_TIM_START_BIT_TOTAL +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 			       10ULL * len * CEC_TIM_DATA_BIT_TOTAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	cec_queue_pin_cec_event(adap, false, false, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	ts = ktime_add_us(ts, CEC_TIM_START_BIT_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	cec_queue_pin_cec_event(adap, true, false, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	ts = ktime_add_us(ts, CEC_TIM_START_BIT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	for (i = 0; i < 10 * len; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		switch (i % 10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		case 0 ... 7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			bit = msg->msg[i / 10] & (0x80 >> (i % 10));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		case 8: /* EOM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 			bit = i / 10 == msg->len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		case 9: /* ACK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			bit = cec_msg_is_broadcast(msg) ^ nacked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		cec_queue_pin_cec_event(adap, false, false, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		if (bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 			ts = ktime_add_us(ts, CEC_TIM_DATA_BIT_1_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			ts = ktime_add_us(ts, CEC_TIM_DATA_BIT_0_LOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		cec_queue_pin_cec_event(adap, true, false, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		if (bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 			ts = ktime_add_us(ts, CEC_TIM_DATA_BIT_1_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			ts = ktime_add_us(ts, CEC_TIM_DATA_BIT_0_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static void vivid_cec_pin_events(struct vivid_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 				 const struct cec_msg *msg, bool nacked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	ktime_t ts = ktime_get();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	vivid_cec_pin_adap_events(dev->cec_rx_adap, ts, msg, nacked);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	for (i = 0; i < MAX_OUTPUTS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		vivid_cec_pin_adap_events(dev->cec_tx_adap[i], ts, msg, nacked);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static void vivid_cec_xfer_done_worker(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	struct vivid_cec_work *cw =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		container_of(work, struct vivid_cec_work, work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	struct vivid_dev *dev = cw->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	struct cec_adapter *adap = cw->adap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	u8 dest = cec_msg_destination(&cw->msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	bool valid_dest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	valid_dest = cec_msg_is_broadcast(&cw->msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	if (!valid_dest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		valid_dest = vivid_cec_find_dest_adap(dev, adap, dest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	cw->tx_status = valid_dest ? CEC_TX_STATUS_OK : CEC_TX_STATUS_NACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	spin_lock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	dev->cec_xfer_time_jiffies = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	dev->cec_xfer_start_jiffies = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	list_del(&cw->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	spin_unlock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	vivid_cec_pin_events(dev, &cw->msg, !valid_dest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	cec_transmit_attempt_done(cw->adap, cw->tx_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	/* Broadcast message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	if (adap != dev->cec_rx_adap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		cec_received_msg(dev->cec_rx_adap, &cw->msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		if (adap != dev->cec_tx_adap[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			cec_received_msg(dev->cec_tx_adap[i], &cw->msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	kfree(cw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static void vivid_cec_xfer_try_worker(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	struct vivid_cec_work *cw =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		container_of(work, struct vivid_cec_work, work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	struct vivid_dev *dev = cw->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	spin_lock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (dev->cec_xfer_time_jiffies) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		list_del(&cw->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		spin_unlock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		cec_transmit_attempt_done(cw->adap, CEC_TX_STATUS_ARB_LOST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		kfree(cw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		INIT_DELAYED_WORK(&cw->work, vivid_cec_xfer_done_worker);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		dev->cec_xfer_start_jiffies = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		dev->cec_xfer_time_jiffies = usecs_to_jiffies(cw->usecs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		spin_unlock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		schedule_delayed_work(&cw->work, dev->cec_xfer_time_jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static int vivid_cec_adap_enable(struct cec_adapter *adap, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	adap->cec_pin_is_high = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static int vivid_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)  * One data bit takes 2400 us, each byte needs 10 bits so that's 24000 us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)  * per byte.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #define USECS_PER_BYTE 24000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static int vivid_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 				   u32 signal_free_time, struct cec_msg *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	struct vivid_dev *dev = cec_get_drvdata(adap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	struct vivid_cec_work *cw = kzalloc(sizeof(*cw), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	long delta_jiffies = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (cw == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	cw->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	cw->adap = adap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	cw->usecs = CEC_FREE_TIME_TO_USEC(signal_free_time) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		    msg->len * USECS_PER_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	cw->msg = *msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	spin_lock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	list_add(&cw->list, &dev->cec_work_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (dev->cec_xfer_time_jiffies == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		INIT_DELAYED_WORK(&cw->work, vivid_cec_xfer_done_worker);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		dev->cec_xfer_start_jiffies = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		dev->cec_xfer_time_jiffies = usecs_to_jiffies(cw->usecs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		delta_jiffies = dev->cec_xfer_time_jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		INIT_DELAYED_WORK(&cw->work, vivid_cec_xfer_try_worker);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		delta_jiffies = dev->cec_xfer_start_jiffies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			dev->cec_xfer_time_jiffies - jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	spin_unlock(&dev->cec_slock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	schedule_delayed_work(&cw->work, delta_jiffies < 0 ? 0 : delta_jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int vivid_received(struct cec_adapter *adap, struct cec_msg *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	struct vivid_dev *dev = cec_get_drvdata(adap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	struct cec_msg reply;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	u8 dest = cec_msg_destination(msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	u8 disp_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	char osd[14];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	if (cec_msg_is_broadcast(msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		dest = adap->log_addrs.log_addr[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	cec_msg_init(&reply, dest, cec_msg_initiator(msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	switch (cec_msg_opcode(msg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	case CEC_MSG_SET_OSD_STRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		if (!cec_is_sink(adap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 			return -ENOMSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		cec_ops_set_osd_string(msg, &disp_ctl, osd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		switch (disp_ctl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		case CEC_OP_DISP_CTL_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			strscpy(dev->osd, osd, sizeof(dev->osd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 			dev->osd_jiffies = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		case CEC_OP_DISP_CTL_UNTIL_CLEARED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			strscpy(dev->osd, osd, sizeof(dev->osd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			dev->osd_jiffies = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		case CEC_OP_DISP_CTL_CLEAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 			dev->osd[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 			dev->osd_jiffies = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			cec_msg_feature_abort(&reply, cec_msg_opcode(msg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 					      CEC_OP_ABORT_INVALID_OP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			cec_transmit_msg(adap, &reply, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		return -ENOMSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static const struct cec_adap_ops vivid_cec_adap_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	.adap_enable = vivid_cec_adap_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	.adap_log_addr = vivid_cec_adap_log_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	.adap_transmit = vivid_cec_adap_transmit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	.received = vivid_received,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct cec_adapter *vivid_cec_alloc_adap(struct vivid_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 					 unsigned int idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 					 bool is_source)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	u32 caps = CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL | CEC_CAP_MONITOR_PIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	char name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	snprintf(name, sizeof(name), "vivid-%03d-vid-%s%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		 dev->inst, is_source ? "out" : "cap", idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	return cec_allocate_adapter(&vivid_cec_adap_ops, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		name, caps, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }