|  | /* | 
|  | * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA | 
|  | * | 
|  | * SPDX-License-Identifier: Apache-2.0 | 
|  | */ | 
|  |  | 
|  | #include <zephyr/drivers/spi.h> | 
|  | #include <zephyr/drivers/spi/rtio.h> | 
|  | #include <zephyr/cache.h> | 
|  | #include <zephyr/pm/device.h> | 
|  | #include <zephyr/pm/device_runtime.h> | 
|  | #include <zephyr/drivers/clock_control/nrf_clock_control.h> | 
|  | #include <zephyr/drivers/pinctrl.h> | 
|  | #include <zephyr/mem_mgmt/mem_attr.h> | 
|  | #include <soc.h> | 
|  | #ifdef CONFIG_SOC_NRF54H20_GPD | 
|  | #include <nrf/gpd.h> | 
|  | #endif | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | #include <nrfx_ppi.h> | 
|  | #endif | 
|  | #ifdef CONFIG_SOC_NRF5340_CPUAPP | 
|  | #include <hal/nrf_clock.h> | 
|  | #endif | 
|  | #include <nrfx_spim.h> | 
|  | #include <string.h> | 
|  | #include <zephyr/linker/devicetree_regions.h> | 
|  |  | 
|  | #include <zephyr/logging/log.h> | 
|  | #include <zephyr/irq.h> | 
|  | LOG_MODULE_REGISTER(spi_nrfx_spim, CONFIG_SPI_LOG_LEVEL); | 
|  |  | 
|  | #include "spi_context.h" | 
|  | #include "spi_nrfx_common.h" | 
|  |  | 
|  | #if defined(CONFIG_SOC_NRF52832) && !defined(CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58) | 
|  | #error  This driver is not available by default for nRF52832 because of Product Anomaly 58 \ | 
|  | (SPIM: An additional byte is clocked out when RXD.MAXCNT == 1 and TXD.MAXCNT <= 1). \ | 
|  | Use CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58=y to override this limitation. | 
|  | #endif | 
|  |  | 
|  | #if (CONFIG_SPI_NRFX_RAM_BUFFER_SIZE > 0) | 
|  | #define SPI_BUFFER_IN_RAM 1 | 
|  | #endif | 
|  |  | 
|  | #if defined(CONFIG_CLOCK_CONTROL_NRF2_GLOBAL_HSFLL) && \ | 
|  | (defined(CONFIG_HAS_HW_NRF_SPIM120) || \ | 
|  | defined(CONFIG_HAS_HW_NRF_SPIM121)) | 
|  | #define SPIM_REQUESTS_CLOCK(idx) UTIL_OR(IS_EQ(idx, 120), \ | 
|  | IS_EQ(idx, 121)) | 
|  | #define USE_CLOCK_REQUESTS 1 | 
|  | #else | 
|  | #define SPIM_REQUESTS_CLOCK(idx) 0 | 
|  | #endif | 
|  |  | 
|  | struct spi_nrfx_data { | 
|  | struct spi_context ctx; | 
|  | const struct device *dev; | 
|  | size_t  chunk_len; | 
|  | bool    busy; | 
|  | bool    initialized; | 
|  | #ifdef SPI_BUFFER_IN_RAM | 
|  | uint8_t *tx_buffer; | 
|  | uint8_t *rx_buffer; | 
|  | #endif | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | bool    anomaly_58_workaround_active; | 
|  | uint8_t ppi_ch; | 
|  | uint8_t gpiote_ch; | 
|  | #endif | 
|  | #ifdef USE_CLOCK_REQUESTS | 
|  | bool clock_requested; | 
|  | #endif | 
|  | }; | 
|  |  | 
|  | struct spi_nrfx_config { | 
|  | nrfx_spim_t	   spim; | 
|  | uint32_t	   max_freq; | 
|  | nrfx_spim_config_t def_config; | 
|  | void (*irq_connect)(void); | 
|  | uint16_t max_chunk_len; | 
|  | const struct pinctrl_dev_config *pcfg; | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | bool anomaly_58_workaround; | 
|  | #endif | 
|  | uint32_t wake_pin; | 
|  | nrfx_gpiote_t wake_gpiote; | 
|  | #ifdef CONFIG_DCACHE | 
|  | uint32_t mem_attr; | 
|  | #endif | 
|  | #ifdef USE_CLOCK_REQUESTS | 
|  | const struct device *clk_dev; | 
|  | struct nrf_clock_spec clk_spec; | 
|  | #endif | 
|  | }; | 
|  |  | 
|  | static void event_handler(const nrfx_spim_evt_t *p_event, void *p_context); | 
|  |  | 
|  | static inline int request_clock(const struct device *dev) | 
|  | { | 
|  | #ifdef USE_CLOCK_REQUESTS | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | int error; | 
|  |  | 
|  | if (!dev_config->clk_dev) { | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | error = nrf_clock_control_request_sync( | 
|  | dev_config->clk_dev, &dev_config->clk_spec, | 
|  | K_MSEC(CONFIG_SPI_COMPLETION_TIMEOUT_TOLERANCE)); | 
|  | if (error < 0) { | 
|  | LOG_ERR("Failed to request clock: %d", error); | 
|  | return error; | 
|  | } | 
|  |  | 
|  | dev_data->clock_requested = true; | 
|  | #else | 
|  | ARG_UNUSED(dev); | 
|  | #endif | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static inline void release_clock(const struct device *dev) | 
|  | { | 
|  | #ifdef USE_CLOCK_REQUESTS | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  |  | 
|  | if (!dev_data->clock_requested) { | 
|  | return; | 
|  | } | 
|  |  | 
|  | dev_data->clock_requested = false; | 
|  |  | 
|  | nrf_clock_control_release(dev_config->clk_dev, &dev_config->clk_spec); | 
|  | #else | 
|  | ARG_UNUSED(dev); | 
|  | #endif | 
|  | } | 
|  |  | 
|  | static inline void finalize_spi_transaction(const struct device *dev, bool deactivate_cs) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | void *reg = dev_config->spim.p_reg; | 
|  |  | 
|  | if (deactivate_cs) { | 
|  | spi_context_cs_control(&dev_data->ctx, false); | 
|  | } | 
|  |  | 
|  | if (NRF_SPIM_IS_320MHZ_SPIM(reg) && !(dev_data->ctx.config->operation & SPI_HOLD_ON_CS)) { | 
|  | nrfy_spim_disable(reg); | 
|  | } | 
|  |  | 
|  | if (!IS_ENABLED(CONFIG_PM_DEVICE_RUNTIME)) { | 
|  | release_clock(dev); | 
|  | } | 
|  |  | 
|  | pm_device_runtime_put_async(dev, K_NO_WAIT); | 
|  | } | 
|  |  | 
|  | static inline uint32_t get_nrf_spim_frequency(uint32_t frequency) | 
|  | { | 
|  | /* Get the highest supported frequency not exceeding the requested one. | 
|  | */ | 
|  | if (frequency >= MHZ(32) && (NRF_SPIM_HAS_32_MHZ_FREQ || NRF_SPIM_HAS_PRESCALER)) { | 
|  | return MHZ(32); | 
|  | } else if (frequency >= MHZ(16) && (NRF_SPIM_HAS_16_MHZ_FREQ || NRF_SPIM_HAS_PRESCALER)) { | 
|  | return MHZ(16); | 
|  | } else if (frequency >= MHZ(8)) { | 
|  | return MHZ(8); | 
|  | } else if (frequency >= MHZ(4)) { | 
|  | return MHZ(4); | 
|  | } else if (frequency >= MHZ(2)) { | 
|  | return MHZ(2); | 
|  | } else if (frequency >= MHZ(1)) { | 
|  | return MHZ(1); | 
|  | } else if (frequency >= KHZ(500)) { | 
|  | return KHZ(500); | 
|  | } else if (frequency >= KHZ(250)) { | 
|  | return KHZ(250); | 
|  | } else { | 
|  | return KHZ(125); | 
|  | } | 
|  | } | 
|  |  | 
|  | static inline nrf_spim_mode_t get_nrf_spim_mode(uint16_t operation) | 
|  | { | 
|  | if (SPI_MODE_GET(operation) & SPI_MODE_CPOL) { | 
|  | if (SPI_MODE_GET(operation) & SPI_MODE_CPHA) { | 
|  | return NRF_SPIM_MODE_3; | 
|  | } else { | 
|  | return NRF_SPIM_MODE_2; | 
|  | } | 
|  | } else { | 
|  | if (SPI_MODE_GET(operation) & SPI_MODE_CPHA) { | 
|  | return NRF_SPIM_MODE_1; | 
|  | } else { | 
|  | return NRF_SPIM_MODE_0; | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | static inline nrf_spim_bit_order_t get_nrf_spim_bit_order(uint16_t operation) | 
|  | { | 
|  | if (operation & SPI_TRANSFER_LSB) { | 
|  | return NRF_SPIM_BIT_ORDER_LSB_FIRST; | 
|  | } else { | 
|  | return NRF_SPIM_BIT_ORDER_MSB_FIRST; | 
|  | } | 
|  | } | 
|  |  | 
|  | static int configure(const struct device *dev, | 
|  | const struct spi_config *spi_cfg) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | struct spi_context *ctx = &dev_data->ctx; | 
|  | uint32_t max_freq = dev_config->max_freq; | 
|  | nrfx_spim_config_t config; | 
|  | nrfx_err_t result; | 
|  | uint32_t sck_pin; | 
|  |  | 
|  | if (dev_data->initialized && spi_context_configured(ctx, spi_cfg)) { | 
|  | /* Already configured. No need to do it again. */ | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | if (spi_cfg->operation & SPI_HALF_DUPLEX) { | 
|  | LOG_ERR("Half-duplex not supported"); | 
|  | return -ENOTSUP; | 
|  | } | 
|  |  | 
|  | if (SPI_OP_MODE_GET(spi_cfg->operation) != SPI_OP_MODE_MASTER) { | 
|  | LOG_ERR("Slave mode is not supported on %s", dev->name); | 
|  | return -EINVAL; | 
|  | } | 
|  |  | 
|  | if (spi_cfg->operation & SPI_MODE_LOOP) { | 
|  | LOG_ERR("Loopback mode is not supported"); | 
|  | return -EINVAL; | 
|  | } | 
|  |  | 
|  | if (IS_ENABLED(CONFIG_SPI_EXTENDED_MODES) && | 
|  | (spi_cfg->operation & SPI_LINES_MASK) != SPI_LINES_SINGLE) { | 
|  | LOG_ERR("Only single line mode is supported"); | 
|  | return -EINVAL; | 
|  | } | 
|  |  | 
|  | if (SPI_WORD_SIZE_GET(spi_cfg->operation) != 8) { | 
|  | LOG_ERR("Word sizes other than 8 bits are not supported"); | 
|  | return -EINVAL; | 
|  | } | 
|  |  | 
|  | if (spi_cfg->frequency < 125000) { | 
|  | LOG_ERR("Frequencies lower than 125 kHz are not supported"); | 
|  | return -EINVAL; | 
|  | } | 
|  |  | 
|  | #if defined(CONFIG_SOC_NRF5340_CPUAPP) | 
|  | /* On nRF5340, the 32 Mbps speed is supported by the application core | 
|  | * when it is running at 128 MHz (see the Timing specifications section | 
|  | * in the nRF5340 PS). | 
|  | */ | 
|  | if (max_freq > 16000000 && | 
|  | nrf_clock_hfclk_div_get(NRF_CLOCK) != NRF_CLOCK_HFCLK_DIV_1) { | 
|  | max_freq = 16000000; | 
|  | } | 
|  | #endif | 
|  |  | 
|  | config = dev_config->def_config; | 
|  |  | 
|  | /* Limit the frequency to that supported by the SPIM instance. */ | 
|  | config.frequency = get_nrf_spim_frequency(MIN(spi_cfg->frequency, | 
|  | max_freq)); | 
|  | config.mode      = get_nrf_spim_mode(spi_cfg->operation); | 
|  | config.bit_order = get_nrf_spim_bit_order(spi_cfg->operation); | 
|  |  | 
|  | sck_pin = nrfy_spim_sck_pin_get(dev_config->spim.p_reg); | 
|  |  | 
|  | if (sck_pin != NRF_SPIM_PIN_NOT_CONNECTED) { | 
|  | nrfy_gpio_pin_write(sck_pin, spi_cfg->operation & SPI_MODE_CPOL ? 1 : 0); | 
|  | } | 
|  |  | 
|  | if (dev_data->initialized) { | 
|  | nrfx_spim_uninit(&dev_config->spim); | 
|  | dev_data->initialized = false; | 
|  | } | 
|  |  | 
|  | result = nrfx_spim_init(&dev_config->spim, &config, | 
|  | event_handler, (void *)dev); | 
|  | if (result != NRFX_SUCCESS) { | 
|  | LOG_ERR("Failed to initialize nrfx driver: %08x", result); | 
|  | return -EIO; | 
|  | } | 
|  |  | 
|  | dev_data->initialized = true; | 
|  |  | 
|  | ctx->config = spi_cfg; | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | static const nrfx_gpiote_t gpiote = NRFX_GPIOTE_INSTANCE(0); | 
|  |  | 
|  | /* | 
|  | * Brief Workaround for transmitting 1 byte with SPIM. | 
|  | * | 
|  | * Derived from the setup_workaround_for_ftpan_58() function from | 
|  | * the nRF52832 Rev 1 Errata v1.6 document anomaly 58 workaround. | 
|  | * | 
|  | * Warning Must not be used when transmitting multiple bytes. | 
|  | * | 
|  | * Warning After this workaround is used, the user must reset the PPI | 
|  | * channel and the GPIOTE channel before attempting to transmit multiple | 
|  | * bytes. | 
|  | */ | 
|  | static void anomaly_58_workaround_setup(const struct device *dev) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | NRF_SPIM_Type *spim = dev_config->spim.p_reg; | 
|  | uint32_t ppi_ch = dev_data->ppi_ch; | 
|  | uint32_t gpiote_ch = dev_data->gpiote_ch; | 
|  | uint32_t eep = (uint32_t)&gpiote.p_reg->EVENTS_IN[gpiote_ch]; | 
|  | uint32_t tep = (uint32_t)&spim->TASKS_STOP; | 
|  |  | 
|  | dev_data->anomaly_58_workaround_active = true; | 
|  |  | 
|  | /* Create an event when SCK toggles */ | 
|  | nrf_gpiote_event_configure(gpiote.p_reg, gpiote_ch, spim->PSEL.SCK, | 
|  | GPIOTE_CONFIG_POLARITY_Toggle); | 
|  | nrf_gpiote_event_enable(gpiote.p_reg, gpiote_ch); | 
|  |  | 
|  | /* Stop the spim instance when SCK toggles */ | 
|  | nrf_ppi_channel_endpoint_setup(NRF_PPI, ppi_ch, eep, tep); | 
|  | nrf_ppi_channel_enable(NRF_PPI, ppi_ch); | 
|  |  | 
|  | /* The spim instance cannot be stopped mid-byte, so it will finish | 
|  | * transmitting the first byte and then stop. Effectively ensuring | 
|  | * that only 1 byte is transmitted. | 
|  | */ | 
|  | } | 
|  |  | 
|  | static void anomaly_58_workaround_clear(struct spi_nrfx_data *dev_data) | 
|  | { | 
|  | uint32_t ppi_ch = dev_data->ppi_ch; | 
|  | uint32_t gpiote_ch = dev_data->gpiote_ch; | 
|  |  | 
|  | if (dev_data->anomaly_58_workaround_active) { | 
|  | nrf_ppi_channel_disable(NRF_PPI, ppi_ch); | 
|  | nrf_gpiote_task_disable(gpiote.p_reg, gpiote_ch); | 
|  |  | 
|  | dev_data->anomaly_58_workaround_active = false; | 
|  | } | 
|  | } | 
|  |  | 
|  | static int anomaly_58_workaround_init(const struct device *dev) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | nrfx_err_t err_code; | 
|  |  | 
|  | dev_data->anomaly_58_workaround_active = false; | 
|  |  | 
|  | if (dev_config->anomaly_58_workaround) { | 
|  | err_code = nrfx_ppi_channel_alloc(&dev_data->ppi_ch); | 
|  | if (err_code != NRFX_SUCCESS) { | 
|  | LOG_ERR("Failed to allocate PPI channel"); | 
|  | return -ENODEV; | 
|  | } | 
|  |  | 
|  | err_code = nrfx_gpiote_channel_alloc(&gpiote, &dev_data->gpiote_ch); | 
|  | if (err_code != NRFX_SUCCESS) { | 
|  | LOG_ERR("Failed to allocate GPIOTE channel"); | 
|  | return -ENODEV; | 
|  | } | 
|  | LOG_DBG("PAN 58 workaround enabled for %s: ppi %u, gpiote %u", | 
|  | dev->name, dev_data->ppi_ch, dev_data->gpiote_ch); | 
|  | } | 
|  |  | 
|  | return 0; | 
|  | } | 
|  | #endif | 
|  |  | 
|  | static void finish_transaction(const struct device *dev, int error) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | struct spi_context *ctx = &dev_data->ctx; | 
|  |  | 
|  | LOG_DBG("Transaction finished with status %d", error); | 
|  |  | 
|  | spi_context_complete(ctx, dev, error); | 
|  | dev_data->busy = false; | 
|  |  | 
|  | finalize_spi_transaction(dev, true); | 
|  | } | 
|  |  | 
|  | static void transfer_next_chunk(const struct device *dev) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | struct spi_context *ctx = &dev_data->ctx; | 
|  | int error = 0; | 
|  |  | 
|  | size_t chunk_len = spi_context_max_continuous_chunk(ctx); | 
|  |  | 
|  | if (chunk_len > 0) { | 
|  | nrfx_spim_xfer_desc_t xfer; | 
|  | nrfx_err_t result; | 
|  | const uint8_t *tx_buf = ctx->tx_buf; | 
|  | uint8_t *rx_buf = ctx->rx_buf; | 
|  |  | 
|  | if (chunk_len > dev_config->max_chunk_len) { | 
|  | chunk_len = dev_config->max_chunk_len; | 
|  | } | 
|  |  | 
|  | #ifdef SPI_BUFFER_IN_RAM | 
|  | if (spi_context_tx_buf_on(ctx) && | 
|  | !nrf_dma_accessible_check(&dev_config->spim.p_reg, tx_buf)) { | 
|  |  | 
|  | if (chunk_len > CONFIG_SPI_NRFX_RAM_BUFFER_SIZE) { | 
|  | chunk_len = CONFIG_SPI_NRFX_RAM_BUFFER_SIZE; | 
|  | } | 
|  |  | 
|  | memcpy(dev_data->tx_buffer, tx_buf, chunk_len); | 
|  | #ifdef CONFIG_DCACHE | 
|  | if (dev_config->mem_attr & DT_MEM_CACHEABLE) { | 
|  | sys_cache_data_flush_range(dev_data->tx_buffer, chunk_len); | 
|  | } | 
|  | #endif | 
|  | tx_buf = dev_data->tx_buffer; | 
|  | } | 
|  |  | 
|  | if (spi_context_rx_buf_on(ctx) && | 
|  | !nrf_dma_accessible_check(&dev_config->spim.p_reg, rx_buf)) { | 
|  |  | 
|  | if (chunk_len > CONFIG_SPI_NRFX_RAM_BUFFER_SIZE) { | 
|  | chunk_len = CONFIG_SPI_NRFX_RAM_BUFFER_SIZE; | 
|  | } | 
|  |  | 
|  | rx_buf = dev_data->rx_buffer; | 
|  | } | 
|  | #endif | 
|  |  | 
|  | dev_data->chunk_len = chunk_len; | 
|  |  | 
|  | xfer.p_tx_buffer = tx_buf; | 
|  | xfer.tx_length   = spi_context_tx_buf_on(ctx) ? chunk_len : 0; | 
|  | xfer.p_rx_buffer = rx_buf; | 
|  | xfer.rx_length   = spi_context_rx_buf_on(ctx) ? chunk_len : 0; | 
|  |  | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | if (xfer.rx_length == 1 && xfer.tx_length <= 1) { | 
|  | if (dev_config->anomaly_58_workaround) { | 
|  | anomaly_58_workaround_setup(dev); | 
|  | } else { | 
|  | LOG_WRN("Transaction aborted since it would trigger " | 
|  | "nRF52832 PAN 58"); | 
|  | error = -EIO; | 
|  | } | 
|  | } | 
|  | #endif | 
|  | if (error == 0) { | 
|  | result = nrfx_spim_xfer(&dev_config->spim, &xfer, 0); | 
|  | if (result == NRFX_SUCCESS) { | 
|  | return; | 
|  | } | 
|  | error = -EIO; | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | anomaly_58_workaround_clear(dev_data); | 
|  | #endif | 
|  | } | 
|  | } | 
|  |  | 
|  | finish_transaction(dev, error); | 
|  | } | 
|  |  | 
|  | static void event_handler(const nrfx_spim_evt_t *p_event, void *p_context) | 
|  | { | 
|  | const struct device *dev = p_context; | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | #ifdef CONFIG_DCACHE | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | #endif | 
|  |  | 
|  | if (p_event->type == NRFX_SPIM_EVENT_DONE) { | 
|  | /* Chunk length is set to 0 when a transaction is aborted | 
|  | * due to a timeout. | 
|  | */ | 
|  | if (dev_data->chunk_len == 0) { | 
|  | finish_transaction(dev_data->dev, -ETIMEDOUT); | 
|  | return; | 
|  | } | 
|  |  | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | anomaly_58_workaround_clear(dev_data); | 
|  | #endif | 
|  | #ifdef SPI_BUFFER_IN_RAM | 
|  | if (spi_context_rx_buf_on(&dev_data->ctx) && | 
|  | p_event->xfer_desc.p_rx_buffer != NULL && | 
|  | p_event->xfer_desc.p_rx_buffer != dev_data->ctx.rx_buf) { | 
|  | #ifdef CONFIG_DCACHE | 
|  | if (dev_config->mem_attr & DT_MEM_CACHEABLE) { | 
|  | sys_cache_data_invd_range(dev_data->rx_buffer, dev_data->chunk_len); | 
|  | } | 
|  | #endif | 
|  | (void)memcpy(dev_data->ctx.rx_buf, | 
|  | dev_data->rx_buffer, | 
|  | dev_data->chunk_len); | 
|  | } | 
|  | #endif | 
|  | spi_context_update_tx(&dev_data->ctx, 1, dev_data->chunk_len); | 
|  | spi_context_update_rx(&dev_data->ctx, 1, dev_data->chunk_len); | 
|  |  | 
|  | transfer_next_chunk(dev_data->dev); | 
|  | } | 
|  | } | 
|  |  | 
|  | static int transceive(const struct device *dev, | 
|  | const struct spi_config *spi_cfg, | 
|  | const struct spi_buf_set *tx_bufs, | 
|  | const struct spi_buf_set *rx_bufs, | 
|  | bool asynchronous, | 
|  | spi_callback_t cb, | 
|  | void *userdata) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | void *reg = dev_config->spim.p_reg; | 
|  | int error; | 
|  |  | 
|  | pm_device_runtime_get(dev); | 
|  | spi_context_lock(&dev_data->ctx, asynchronous, cb, userdata, spi_cfg); | 
|  |  | 
|  | error = configure(dev, spi_cfg); | 
|  |  | 
|  | if (error == 0 && !IS_ENABLED(CONFIG_PM_DEVICE_RUNTIME)) { | 
|  | error = request_clock(dev); | 
|  | } | 
|  |  | 
|  | if (error == 0) { | 
|  | dev_data->busy = true; | 
|  |  | 
|  | if (dev_config->wake_pin != WAKE_PIN_NOT_USED) { | 
|  | error = spi_nrfx_wake_request(&dev_config->wake_gpiote, | 
|  | dev_config->wake_pin); | 
|  | if (error == -ETIMEDOUT) { | 
|  | LOG_WRN("Waiting for WAKE acknowledgment timed out"); | 
|  | /* If timeout occurs, try to perform the transfer | 
|  | * anyway, just in case the slave device was unable | 
|  | * to signal that it was already awaken and prepared | 
|  | * for the transfer. | 
|  | */ | 
|  | } | 
|  | } | 
|  |  | 
|  | spi_context_buffers_setup(&dev_data->ctx, tx_bufs, rx_bufs, 1); | 
|  | if (NRF_SPIM_IS_320MHZ_SPIM(reg)) { | 
|  | nrfy_spim_enable(reg); | 
|  | } | 
|  | spi_context_cs_control(&dev_data->ctx, true); | 
|  |  | 
|  | transfer_next_chunk(dev); | 
|  |  | 
|  | error = spi_context_wait_for_completion(&dev_data->ctx); | 
|  | if (error == -ETIMEDOUT) { | 
|  | /* Set the chunk length to 0 so that event_handler() | 
|  | * knows that the transaction timed out and is to be | 
|  | * aborted. | 
|  | */ | 
|  | dev_data->chunk_len = 0; | 
|  | /* Abort the current transfer by deinitializing | 
|  | * the nrfx driver. | 
|  | */ | 
|  | nrfx_spim_uninit(&dev_config->spim); | 
|  | dev_data->initialized = false; | 
|  |  | 
|  | /* Make sure the transaction is finished (it may be | 
|  | * already finished if it actually did complete before | 
|  | * the nrfx driver was deinitialized). | 
|  | */ | 
|  | finish_transaction(dev, -ETIMEDOUT); | 
|  |  | 
|  | /* Clean up the driver state. */ | 
|  | k_sem_reset(&dev_data->ctx.sync); | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | anomaly_58_workaround_clear(dev_data); | 
|  | #endif | 
|  | } else if (error) { | 
|  | finalize_spi_transaction(dev, true); | 
|  | } | 
|  | } else { | 
|  | pm_device_runtime_put(dev); | 
|  | } | 
|  |  | 
|  | spi_context_release(&dev_data->ctx, error); | 
|  |  | 
|  | return error; | 
|  | } | 
|  |  | 
|  | static int spi_nrfx_transceive(const struct device *dev, | 
|  | const struct spi_config *spi_cfg, | 
|  | const struct spi_buf_set *tx_bufs, | 
|  | const struct spi_buf_set *rx_bufs) | 
|  | { | 
|  | return transceive(dev, spi_cfg, tx_bufs, rx_bufs, false, NULL, NULL); | 
|  | } | 
|  |  | 
|  | #ifdef CONFIG_SPI_ASYNC | 
|  | static int spi_nrfx_transceive_async(const struct device *dev, | 
|  | const struct spi_config *spi_cfg, | 
|  | const struct spi_buf_set *tx_bufs, | 
|  | const struct spi_buf_set *rx_bufs, | 
|  | spi_callback_t cb, | 
|  | void *userdata) | 
|  | { | 
|  | return transceive(dev, spi_cfg, tx_bufs, rx_bufs, true, cb, userdata); | 
|  | } | 
|  | #endif /* CONFIG_SPI_ASYNC */ | 
|  |  | 
|  | static int spi_nrfx_release(const struct device *dev, | 
|  | const struct spi_config *spi_cfg) | 
|  | { | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  |  | 
|  | if (!spi_context_configured(&dev_data->ctx, spi_cfg)) { | 
|  | return -EINVAL; | 
|  | } | 
|  |  | 
|  | if (dev_data->busy) { | 
|  | return -EBUSY; | 
|  | } | 
|  |  | 
|  | spi_context_unlock_unconditionally(&dev_data->ctx); | 
|  | finalize_spi_transaction(dev, false); | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static DEVICE_API(spi, spi_nrfx_driver_api) = { | 
|  | .transceive = spi_nrfx_transceive, | 
|  | #ifdef CONFIG_SPI_ASYNC | 
|  | .transceive_async = spi_nrfx_transceive_async, | 
|  | #endif | 
|  | #ifdef CONFIG_SPI_RTIO | 
|  | .iodev_submit = spi_rtio_iodev_default_submit, | 
|  | #endif | 
|  | .release = spi_nrfx_release, | 
|  | }; | 
|  |  | 
|  | static int spim_resume(const struct device *dev) | 
|  | { | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  |  | 
|  | (void)pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_DEFAULT); | 
|  | /* nrfx_spim_init() will be called at configuration before | 
|  | * the next transfer. | 
|  | */ | 
|  |  | 
|  | #ifdef CONFIG_SOC_NRF54H20_GPD | 
|  | nrf_gpd_retain_pins_set(dev_config->pcfg, false); | 
|  | #endif | 
|  |  | 
|  | return IS_ENABLED(CONFIG_PM_DEVICE_RUNTIME) ? request_clock(dev) : 0; | 
|  | } | 
|  |  | 
|  | static void spim_suspend(const struct device *dev) | 
|  | { | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  |  | 
|  | if (dev_data->initialized) { | 
|  | nrfx_spim_uninit(&dev_config->spim); | 
|  | dev_data->initialized = false; | 
|  | } | 
|  |  | 
|  | if (IS_ENABLED(CONFIG_PM_DEVICE_RUNTIME)) { | 
|  | release_clock(dev); | 
|  | } | 
|  |  | 
|  | #ifdef CONFIG_SOC_NRF54H20_GPD | 
|  | nrf_gpd_retain_pins_set(dev_config->pcfg, true); | 
|  | #endif | 
|  |  | 
|  | (void)pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_SLEEP); | 
|  | } | 
|  |  | 
|  | static int spim_nrfx_pm_action(const struct device *dev, enum pm_device_action action) | 
|  | { | 
|  | if (action == PM_DEVICE_ACTION_RESUME) { | 
|  | return spim_resume(dev); | 
|  | } else if (IS_ENABLED(CONFIG_PM_DEVICE) && (action == PM_DEVICE_ACTION_SUSPEND)) { | 
|  | spim_suspend(dev); | 
|  | } else { | 
|  | return -ENOTSUP; | 
|  | } | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static int spi_nrfx_init(const struct device *dev) | 
|  | { | 
|  | const struct spi_nrfx_config *dev_config = dev->config; | 
|  | struct spi_nrfx_data *dev_data = dev->data; | 
|  | int err; | 
|  |  | 
|  | err = pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_DEFAULT); | 
|  | if (err < 0) { | 
|  | return err; | 
|  | } | 
|  |  | 
|  | if (dev_config->wake_pin != WAKE_PIN_NOT_USED) { | 
|  | err = spi_nrfx_wake_init(&dev_config->wake_gpiote, dev_config->wake_pin); | 
|  | if (err == -ENODEV) { | 
|  | LOG_ERR("Failed to allocate GPIOTE channel for WAKE"); | 
|  | return err; | 
|  | } | 
|  | if (err == -EIO) { | 
|  | LOG_ERR("Failed to configure WAKE pin"); | 
|  | return err; | 
|  | } | 
|  | } | 
|  |  | 
|  | dev_config->irq_connect(); | 
|  |  | 
|  | err = spi_context_cs_configure_all(&dev_data->ctx); | 
|  | if (err < 0) { | 
|  | return err; | 
|  | } | 
|  |  | 
|  | spi_context_unlock_unconditionally(&dev_data->ctx); | 
|  |  | 
|  | #ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 | 
|  | err = anomaly_58_workaround_init(dev); | 
|  | if (err < 0) { | 
|  | return err; | 
|  | } | 
|  | #endif | 
|  | return pm_device_driver_init(dev, spim_nrfx_pm_action); | 
|  | } | 
|  | /* | 
|  | * We use NODELABEL here because the nrfx API requires us to call | 
|  | * functions which are named according to SoC peripheral instance | 
|  | * being operated on. Since DT_INST() makes no guarantees about that, | 
|  | * it won't work. | 
|  | */ | 
|  | #define SPIM(idx)			DT_NODELABEL(spi##idx) | 
|  | #define SPIM_PROP(idx, prop)		DT_PROP(SPIM(idx), prop) | 
|  | #define SPIM_HAS_PROP(idx, prop)	DT_NODE_HAS_PROP(SPIM(idx), prop) | 
|  | #define SPIM_MEM_REGION(idx)		DT_PHANDLE(SPIM(idx), memory_regions) | 
|  |  | 
|  | #define SPI_NRFX_SPIM_EXTENDED_CONFIG(idx)				\ | 
|  | IF_ENABLED(NRFX_SPIM_EXTENDED_ENABLED,				\ | 
|  | (.dcx_pin = NRF_SPIM_PIN_NOT_CONNECTED,			\ | 
|  | COND_CODE_1(SPIM_PROP(idx, rx_delay_supported),	\ | 
|  | (.rx_delay = SPIM_PROP(idx, rx_delay),),	\ | 
|  | ())					\ | 
|  | )) | 
|  |  | 
|  | #define SPIM_GET_MEM_ATTR(idx)								 \ | 
|  | COND_CODE_1(SPIM_HAS_PROP(idx, memory_regions),					 \ | 
|  | (COND_CODE_1(DT_NODE_HAS_PROP(SPIM_MEM_REGION(idx), zephyr_memory_attr), \ | 
|  | (DT_PROP(SPIM_MEM_REGION(idx), zephyr_memory_attr)),		 \ | 
|  | (0))),								 \ | 
|  | (0)) | 
|  |  | 
|  | /* Fast instances depend on the global HSFLL clock controller (as they need | 
|  | * to request the highest frequency from it to operate correctly), so they | 
|  | * must be initialized after that controller driver, hence the default SPI | 
|  | * initialization priority may be too early for them. | 
|  | */ | 
|  | #if defined(CONFIG_CLOCK_CONTROL_NRF2_GLOBAL_HSFLL_INIT_PRIORITY) && \ | 
|  | CONFIG_SPI_INIT_PRIORITY < CONFIG_CLOCK_CONTROL_NRF2_GLOBAL_HSFLL_INIT_PRIORITY | 
|  | #define SPIM_INIT_PRIORITY(idx) \ | 
|  | COND_CODE_1(SPIM_REQUESTS_CLOCK(idx), \ | 
|  | (UTIL_INC(CONFIG_CLOCK_CONTROL_NRF2_GLOBAL_HSFLL_INIT_PRIORITY)), \ | 
|  | (CONFIG_SPI_INIT_PRIORITY)) | 
|  | #else | 
|  | #define SPIM_INIT_PRIORITY(idx) CONFIG_SPI_INIT_PRIORITY | 
|  | #endif | 
|  |  | 
|  | #define SPI_NRFX_SPIM_DEFINE(idx)					       \ | 
|  | NRF_DT_CHECK_NODE_HAS_PINCTRL_SLEEP(SPIM(idx));			       \ | 
|  | static void irq_connect##idx(void)				       \ | 
|  | {								       \ | 
|  | IRQ_CONNECT(DT_IRQN(SPIM(idx)), DT_IRQ(SPIM(idx), priority),   \ | 
|  | nrfx_isr, nrfx_spim_##idx##_irq_handler, 0);       \ | 
|  | }								       \ | 
|  | IF_ENABLED(SPI_BUFFER_IN_RAM,					       \ | 
|  | (static uint8_t spim_##idx##_tx_buffer			       \ | 
|  | [CONFIG_SPI_NRFX_RAM_BUFFER_SIZE]		       \ | 
|  | SPIM_MEMORY_SECTION(idx);			       \ | 
|  | static uint8_t spim_##idx##_rx_buffer			       \ | 
|  | [CONFIG_SPI_NRFX_RAM_BUFFER_SIZE]		       \ | 
|  | SPIM_MEMORY_SECTION(idx);))			       \ | 
|  | static struct spi_nrfx_data spi_##idx##_data = {		       \ | 
|  | SPI_CONTEXT_INIT_LOCK(spi_##idx##_data, ctx),		       \ | 
|  | SPI_CONTEXT_INIT_SYNC(spi_##idx##_data, ctx),		       \ | 
|  | SPI_CONTEXT_CS_GPIOS_INITIALIZE(SPIM(idx), ctx)		       \ | 
|  | IF_ENABLED(SPI_BUFFER_IN_RAM,				       \ | 
|  | (.tx_buffer = spim_##idx##_tx_buffer,		       \ | 
|  | .rx_buffer = spim_##idx##_rx_buffer,))		       \ | 
|  | .dev  = DEVICE_DT_GET(SPIM(idx)),			       \ | 
|  | .busy = false,						       \ | 
|  | };								       \ | 
|  | PINCTRL_DT_DEFINE(SPIM(idx));					       \ | 
|  | static const struct spi_nrfx_config spi_##idx##z_config = {	       \ | 
|  | .spim = {						       \ | 
|  | .p_reg = (NRF_SPIM_Type *)DT_REG_ADDR(SPIM(idx)),      \ | 
|  | .drv_inst_idx = NRFX_SPIM##idx##_INST_IDX,	       \ | 
|  | },							       \ | 
|  | .max_freq = SPIM_PROP(idx, max_frequency),		       \ | 
|  | .def_config = {						       \ | 
|  | .skip_gpio_cfg = true,				       \ | 
|  | .skip_psel_cfg = true,				       \ | 
|  | .ss_pin = NRF_SPIM_PIN_NOT_CONNECTED,		       \ | 
|  | .orc    = SPIM_PROP(idx, overrun_character),	       \ | 
|  | SPI_NRFX_SPIM_EXTENDED_CONFIG(idx)		       \ | 
|  | },							       \ | 
|  | .irq_connect = irq_connect##idx,			       \ | 
|  | .pcfg = PINCTRL_DT_DEV_CONFIG_GET(SPIM(idx)),		       \ | 
|  | .max_chunk_len = BIT_MASK(SPIM_PROP(idx, easydma_maxcnt_bits)),\ | 
|  | COND_CODE_1(CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58,     \ | 
|  | (.anomaly_58_workaround =			       \ | 
|  | SPIM_PROP(idx, anomaly_58_workaround),),       \ | 
|  | ())						       \ | 
|  | .wake_pin = NRF_DT_GPIOS_TO_PSEL_OR(SPIM(idx), wake_gpios,     \ | 
|  | WAKE_PIN_NOT_USED),	       \ | 
|  | .wake_gpiote = WAKE_GPIOTE_INSTANCE(SPIM(idx)),		       \ | 
|  | IF_ENABLED(CONFIG_DCACHE,				       \ | 
|  | (.mem_attr = SPIM_GET_MEM_ATTR(idx),))		       \ | 
|  | IF_ENABLED(USE_CLOCK_REQUESTS,			       \ | 
|  | (.clk_dev = SPIM_REQUESTS_CLOCK(idx)		       \ | 
|  | ? DEVICE_DT_GET(DT_CLOCKS_CTLR(SPIM(idx)))   \ | 
|  | : NULL,				       \ | 
|  | .clk_spec = {					       \ | 
|  | .frequency = NRF_CLOCK_CONTROL_FREQUENCY_MAX,  \ | 
|  | },))						       \ | 
|  | };								       \ | 
|  | BUILD_ASSERT(!SPIM_HAS_PROP(idx, wake_gpios) ||			       \ | 
|  | !(DT_GPIO_FLAGS(SPIM(idx), wake_gpios) & GPIO_ACTIVE_LOW),\ | 
|  | "WAKE line must be configured as active high");	       \ | 
|  | PM_DEVICE_DT_DEFINE(SPIM(idx), spim_nrfx_pm_action);		       \ | 
|  | SPI_DEVICE_DT_DEFINE(SPIM(idx),					       \ | 
|  | spi_nrfx_init,					       \ | 
|  | PM_DEVICE_DT_GET(SPIM(idx)),			       \ | 
|  | &spi_##idx##_data,				       \ | 
|  | &spi_##idx##z_config,				       \ | 
|  | POST_KERNEL, SPIM_INIT_PRIORITY(idx),		       \ | 
|  | &spi_nrfx_driver_api) | 
|  |  | 
|  | #define SPIM_MEMORY_SECTION(idx)					       \ | 
|  | COND_CODE_1(SPIM_HAS_PROP(idx, memory_regions),			       \ | 
|  | (__attribute__((__section__(LINKER_DT_NODE_REGION_NAME(	       \ | 
|  | SPIM_MEM_REGION(idx)))))),			       \ | 
|  | ()) | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM0 | 
|  | SPI_NRFX_SPIM_DEFINE(0); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM1 | 
|  | SPI_NRFX_SPIM_DEFINE(1); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM2 | 
|  | SPI_NRFX_SPIM_DEFINE(2); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM3 | 
|  | SPI_NRFX_SPIM_DEFINE(3); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM4 | 
|  | SPI_NRFX_SPIM_DEFINE(4); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM00 | 
|  | SPI_NRFX_SPIM_DEFINE(00); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM20 | 
|  | SPI_NRFX_SPIM_DEFINE(20); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM21 | 
|  | SPI_NRFX_SPIM_DEFINE(21); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM22 | 
|  | SPI_NRFX_SPIM_DEFINE(22); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM30 | 
|  | SPI_NRFX_SPIM_DEFINE(30); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM120 | 
|  | SPI_NRFX_SPIM_DEFINE(120); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM121 | 
|  | SPI_NRFX_SPIM_DEFINE(121); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM130 | 
|  | SPI_NRFX_SPIM_DEFINE(130); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM131 | 
|  | SPI_NRFX_SPIM_DEFINE(131); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM132 | 
|  | SPI_NRFX_SPIM_DEFINE(132); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM133 | 
|  | SPI_NRFX_SPIM_DEFINE(133); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM134 | 
|  | SPI_NRFX_SPIM_DEFINE(134); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM135 | 
|  | SPI_NRFX_SPIM_DEFINE(135); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM136 | 
|  | SPI_NRFX_SPIM_DEFINE(136); | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_HAS_HW_NRF_SPIM137 | 
|  | SPI_NRFX_SPIM_DEFINE(137); | 
|  | #endif |