447 lines
11 KiB
C
447 lines
11 KiB
C
/*
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* Copyright (c) 2022 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <zephyr/toolchain.h>
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#include <zephyr/sys/__assert.h>
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#include <zephyr/drivers/i3c.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(i3c, CONFIG_I3C_LOG_LEVEL);
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int i3c_ccc_do_getbcr(struct i3c_device_desc *target,
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struct i3c_ccc_getbcr *bcr)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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__ASSERT_NO_MSG(bcr != NULL);
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 1;
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ccc_tgt_payload.data = &bcr->bcr;
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ccc_tgt_payload.data_len = sizeof(bcr->bcr);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_GETBCR;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_getdcr(struct i3c_device_desc *target,
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struct i3c_ccc_getdcr *dcr)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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__ASSERT_NO_MSG(dcr != NULL);
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 1;
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ccc_tgt_payload.data = &dcr->dcr;
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ccc_tgt_payload.data_len = sizeof(dcr->dcr);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_GETDCR;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_getpid(struct i3c_device_desc *target,
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struct i3c_ccc_getpid *pid)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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__ASSERT_NO_MSG(pid != NULL);
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 1;
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ccc_tgt_payload.data = &pid->pid[0];
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ccc_tgt_payload.data_len = sizeof(pid->pid);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_GETPID;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_rstact_all(const struct device *controller,
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enum i3c_ccc_rstact_defining_byte action)
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{
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struct i3c_ccc_payload ccc_payload;
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uint8_t def_byte;
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__ASSERT_NO_MSG(controller != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_RSTACT(true);
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def_byte = (uint8_t)action;
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ccc_payload.ccc.data = &def_byte;
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ccc_payload.ccc.data_len = 1U;
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return i3c_do_ccc(controller, &ccc_payload);
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}
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int i3c_ccc_do_rstdaa_all(const struct device *controller)
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{
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struct i3c_ccc_payload ccc_payload;
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__ASSERT_NO_MSG(controller != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_RSTDAA;
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return i3c_do_ccc(controller, &ccc_payload);
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}
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int i3c_ccc_do_setdasa(const struct i3c_device_desc *target)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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uint8_t dyn_addr;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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if ((target->static_addr == 0U) || (target->dynamic_addr != 0U)) {
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return -EINVAL;
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}
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/*
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* Note that the 7-bit address needs to start at bit 1
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* (aka left-justified). So shift left by 1;
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*/
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dyn_addr = target->static_addr << 1;
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ccc_tgt_payload.addr = target->static_addr;
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ccc_tgt_payload.rnw = 0;
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ccc_tgt_payload.data = &dyn_addr;
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ccc_tgt_payload.data_len = 1;
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_SETDASA;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_events_all_set(const struct device *controller,
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bool enable, struct i3c_ccc_events *events)
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{
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struct i3c_ccc_payload ccc_payload;
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__ASSERT_NO_MSG(controller != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = enable ? I3C_CCC_ENEC(true) : I3C_CCC_DISEC(true);
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ccc_payload.ccc.data = &events->events;
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ccc_payload.ccc.data_len = sizeof(events->events);
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return i3c_do_ccc(controller, &ccc_payload);
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}
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int i3c_ccc_do_events_set(struct i3c_device_desc *target,
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bool enable, struct i3c_ccc_events *events)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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if (target->dynamic_addr == 0U) {
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return -EINVAL;
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}
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 0;
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ccc_tgt_payload.data = &events->events;
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ccc_tgt_payload.data_len = sizeof(events->events);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = enable ? I3C_CCC_ENEC(false) : I3C_CCC_DISEC(false);
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_setmwl_all(const struct device *controller,
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const struct i3c_ccc_mwl *mwl)
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{
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struct i3c_ccc_payload ccc_payload;
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uint8_t data[2];
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__ASSERT_NO_MSG(controller != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_SETMWL(true);
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ccc_payload.ccc.data = &data[0];
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ccc_payload.ccc.data_len = sizeof(data);
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/* The actual data is MSB first. So order the data. */
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data[0] = (uint8_t)((mwl->len & 0xFF00U) >> 8);
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data[1] = (uint8_t)(mwl->len & 0xFFU);
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return i3c_do_ccc(controller, &ccc_payload);
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}
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int i3c_ccc_do_setmwl(const struct i3c_device_desc *target,
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const struct i3c_ccc_mwl *mwl)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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uint8_t data[2];
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 0;
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ccc_tgt_payload.data = &data[0];
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ccc_tgt_payload.data_len = sizeof(data);
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ccc_payload.ccc.id = I3C_CCC_SETMWL(false);
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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/* The actual length is MSB first. So order the data. */
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data[0] = (uint8_t)((mwl->len & 0xFF00U) >> 8);
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data[1] = (uint8_t)(mwl->len & 0xFFU);
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_getmwl(const struct i3c_device_desc *target,
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struct i3c_ccc_mwl *mwl)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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uint8_t data[2];
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int ret;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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__ASSERT_NO_MSG(mwl != NULL);
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 1;
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ccc_tgt_payload.data = &data[0];
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ccc_tgt_payload.data_len = sizeof(data);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_GETMWL;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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ret = i3c_do_ccc(target->bus, &ccc_payload);
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if (ret == 0) {
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/* The actual length is MSB first. So order the data. */
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mwl->len = (data[0] << 8) | data[1];
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}
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return ret;
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}
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int i3c_ccc_do_setmrl_all(const struct device *controller,
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const struct i3c_ccc_mrl *mrl,
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bool has_ibi_size)
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{
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struct i3c_ccc_payload ccc_payload;
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uint8_t data[3];
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__ASSERT_NO_MSG(controller != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_SETMRL(true);
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ccc_payload.ccc.data = &data[0];
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ccc_payload.ccc.data_len = has_ibi_size ? 3 : 2;
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/* The actual length is MSB first. So order the data. */
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data[0] = (uint8_t)((mrl->len & 0xFF00U) >> 8);
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data[1] = (uint8_t)(mrl->len & 0xFFU);
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if (has_ibi_size) {
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data[2] = mrl->ibi_len;
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}
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return i3c_do_ccc(controller, &ccc_payload);
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}
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int i3c_ccc_do_setmrl(const struct i3c_device_desc *target,
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const struct i3c_ccc_mrl *mrl)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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uint8_t data[3];
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 0;
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ccc_tgt_payload.data = &data[0];
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ccc_payload.ccc.id = I3C_CCC_SETMRL(false);
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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/* The actual length is MSB first. So order the data. */
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data[0] = (uint8_t)((mrl->len & 0xFF00U) >> 8);
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data[1] = (uint8_t)(mrl->len & 0xFFU);
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if ((target->bcr & I3C_BCR_IBI_PAYLOAD_HAS_DATA_BYTE)
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== I3C_BCR_IBI_PAYLOAD_HAS_DATA_BYTE) {
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ccc_tgt_payload.data_len = 3;
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data[2] = mrl->ibi_len;
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} else {
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ccc_tgt_payload.data_len = 2;
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}
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return i3c_do_ccc(target->bus, &ccc_payload);
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}
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int i3c_ccc_do_getmrl(const struct i3c_device_desc *target,
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struct i3c_ccc_mrl *mrl)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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uint8_t data[3];
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bool has_ibi_sz;
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int ret;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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__ASSERT_NO_MSG(mrl != NULL);
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has_ibi_sz = (target->bcr & I3C_BCR_IBI_PAYLOAD_HAS_DATA_BYTE)
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== I3C_BCR_IBI_PAYLOAD_HAS_DATA_BYTE;
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 1;
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ccc_tgt_payload.data = &data[0];
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ccc_tgt_payload.data_len = has_ibi_sz ? 3 : 2;
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_GETMRL;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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ret = i3c_do_ccc(target->bus, &ccc_payload);
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if (ret == 0) {
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/* The actual length is MSB first. So order the data. */
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mrl->len = (data[0] << 8) | data[1];
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if (has_ibi_sz) {
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mrl->ibi_len = data[2];
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}
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}
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return ret;
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}
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int i3c_ccc_do_getstatus(const struct i3c_device_desc *target,
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union i3c_ccc_getstatus *status,
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enum i3c_ccc_getstatus_fmt fmt,
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enum i3c_ccc_getstatus_defbyte defbyte)
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{
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struct i3c_ccc_payload ccc_payload;
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struct i3c_ccc_target_payload ccc_tgt_payload;
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uint8_t defining_byte;
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uint8_t data[2];
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int ret;
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__ASSERT_NO_MSG(target != NULL);
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__ASSERT_NO_MSG(target->bus != NULL);
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__ASSERT_NO_MSG(status != NULL);
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ccc_tgt_payload.addr = target->dynamic_addr;
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ccc_tgt_payload.rnw = 1;
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ccc_tgt_payload.data = &data[0];
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if (fmt == GETSTATUS_FORMAT_1) {
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ccc_tgt_payload.data_len = 2;
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} else if (fmt == GETSTATUS_FORMAT_2) {
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switch (defbyte) {
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case GETSTATUS_FORMAT_2_TGTSTAT:
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__fallthrough;
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case GETSTATUS_FORMAT_2_PRECR:
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ccc_tgt_payload.data_len = 2;
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break;
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default:
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ret = -EINVAL;
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goto out;
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}
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} else {
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ret = -EINVAL;
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goto out;
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}
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memset(&ccc_payload, 0, sizeof(ccc_payload));
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ccc_payload.ccc.id = I3C_CCC_GETSTATUS;
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ccc_payload.targets.payloads = &ccc_tgt_payload;
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ccc_payload.targets.num_targets = 1;
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if (fmt == GETSTATUS_FORMAT_2) {
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defining_byte = (uint8_t)defbyte;
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ccc_payload.ccc.data = &defining_byte;
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ccc_payload.ccc.data_len = 1;
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}
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ret = i3c_do_ccc(target->bus, &ccc_payload);
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if (ret == 0) {
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/* Received data is MSB first. So order the data. */
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if (fmt == GETSTATUS_FORMAT_1) {
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status->fmt1.status = (data[0] << 8) | data[1];
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} else if (fmt == GETSTATUS_FORMAT_2) {
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switch (defbyte) {
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case GETSTATUS_FORMAT_2_TGTSTAT:
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__fallthrough;
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case GETSTATUS_FORMAT_2_PRECR:
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status->fmt2.raw_u16 = (data[0] << 8) | data[1];
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break;
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default:
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break;
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}
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}
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}
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out:
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return ret;
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}
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