148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/*
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* Copyright 2020 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT nxp_imx_flexspi
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#include <drivers/flash.h>
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#include <logging/log.h>
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#include <sys/util.h>
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#include "flash_mcux_flexspi.h"
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LOG_MODULE_REGISTER(flash_flexspi, CONFIG_FLASH_LOG_LEVEL);
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struct flash_flexspi_config {
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FLEXSPI_Type *base;
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uint8_t *ahb_base;
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bool ahb_bufferable;
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bool ahb_cacheable;
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bool ahb_prefetch;
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bool ahb_read_addr_opt;
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bool combination_mode;
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flexspi_read_sample_clock_t rx_sample_clock;
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};
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struct flash_flexspi_data {
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size_t size[kFLEXSPI_PortCount];
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};
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int flash_flexspi_update_lut(const struct device *dev, uint32_t index,
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const uint32_t *cmd, uint32_t count)
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{
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const struct flash_flexspi_config *config = dev->config;
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FLEXSPI_UpdateLUT(config->base, index, cmd, count);
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return 0;
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}
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int flash_flexspi_set_flash_config(const struct device *dev,
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const flexspi_device_config_t *device_config,
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flexspi_port_t port)
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{
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const struct flash_flexspi_config *config = dev->config;
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struct flash_flexspi_data *data = dev->data;
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if (port >= kFLEXSPI_PortCount) {
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LOG_ERR("Invalid port number");
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return -EINVAL;
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}
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data->size[port] = device_config->flashSize * KB(1);
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FLEXSPI_SetFlashConfig(config->base,
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(flexspi_device_config_t *) device_config,
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port);
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return 0;
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}
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int flash_flexspi_reset(const struct device *dev)
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{
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const struct flash_flexspi_config *config = dev->config;
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FLEXSPI_SoftwareReset(config->base);
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return 0;
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}
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int flash_flexspi_transfer(const struct device *dev,
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flexspi_transfer_t *transfer)
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{
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const struct flash_flexspi_config *config = dev->config;
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status_t status = FLEXSPI_TransferBlocking(config->base, transfer);
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if (status != kStatus_Success) {
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LOG_ERR("Transfer error: %d", status);
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return -EIO;
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}
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return 0;
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}
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void *flash_flexspi_get_ahb_address(const struct device *dev,
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flexspi_port_t port, off_t offset)
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{
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const struct flash_flexspi_config *config = dev->config;
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struct flash_flexspi_data *data = dev->data;
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int i;
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if (port >= kFLEXSPI_PortCount) {
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LOG_ERR("Invalid port number");
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return NULL;
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}
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for (i = 0; i < port; i++) {
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offset += data->size[port];
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}
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return config->ahb_base + offset;
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}
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static int flash_flexspi_init(const struct device *dev)
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{
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const struct flash_flexspi_config *config = dev->config;
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flexspi_config_t flexspi_config;
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FLEXSPI_GetDefaultConfig(&flexspi_config);
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flexspi_config.ahbConfig.enableAHBBufferable = config->ahb_bufferable;
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flexspi_config.ahbConfig.enableAHBCachable = config->ahb_cacheable;
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flexspi_config.ahbConfig.enableAHBPrefetch = config->ahb_prefetch;
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flexspi_config.ahbConfig.enableReadAddressOpt = config->ahb_read_addr_opt;
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flexspi_config.enableCombination = config->combination_mode;
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flexspi_config.rxSampleClock = config->rx_sample_clock;
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FLEXSPI_Init(config->base, &flexspi_config);
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return 0;
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}
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#define FLASH_FLEXSPI(n) \
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static const struct flash_flexspi_config \
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flash_flexspi_config_##n = { \
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.base = (FLEXSPI_Type *) DT_INST_REG_ADDR(n), \
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.ahb_base = (uint8_t *) DT_INST_REG_ADDR_BY_IDX(n, 1), \
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.ahb_bufferable = DT_INST_PROP(n, ahb_bufferable), \
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.ahb_cacheable = DT_INST_PROP(n, ahb_cacheable), \
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.ahb_prefetch = DT_INST_PROP(n, ahb_prefetch), \
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.ahb_read_addr_opt = DT_INST_PROP(n, ahb_read_addr_opt),\
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.combination_mode = DT_INST_PROP(n, combination_mode), \
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.rx_sample_clock = DT_INST_PROP(n, rx_clock_source), \
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}; \
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\
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static struct flash_flexspi_data flash_flexspi_data_##n; \
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\
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DEVICE_DT_INST_DEFINE(n, \
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flash_flexspi_init, \
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device_pm_control_nop, \
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&flash_flexspi_data_##n, \
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&flash_flexspi_config_##n, \
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POST_KERNEL, \
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CONFIG_KERNEL_INIT_PRIORITY_DEVICE, \
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NULL);
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DT_INST_FOREACH_STATUS_OKAY(FLASH_FLEXSPI)
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