adafruit-mirror/zephyr
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 9

drivers: spi: Add support SPI driver for Renesas RA6, RA4, RA2

Browse source 
- Add SPI driver support for RA
- RA2A1 not support slave select keeping level so disable it
in Kconfig

Signed-off-by: Tri Nguyen <tri.nguyen.wj@bp.renesas.com>
Signed-off-by: Thao Luong <thao.luong.uw@renesas.com>
Signed-off-by: Khoa Nguyen <khoa.nguyen.xh@renesas.com>
This commit is contained in:
Khoa Nguyen 2024-10-28 13:17:45 +07:00 committed by Benjamin Cabé
parent 4f46b38843
commit c312b322ad
6 changed files with 903 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/spi/CMakeLists.txt
View file

@ -52,6 +52,7 @@ zephyr_library_sources_ifdef(CONFIG_SPI_AMBIQ_BLEIF spi_ambiq_bleif.c)
zephyr_library_sources_ifdef(CONFIG_SPI_RPI_PICO_PIO spi_rpi_pico_pio.c) zephyr_library_sources_ifdef(CONFIG_SPI_RPI_PICO_PIO spi_rpi_pico_pio.c)
zephyr_library_sources_ifdef(CONFIG_SPI_MCHP_MSS spi_mchp_mss.c) zephyr_library_sources_ifdef(CONFIG_SPI_MCHP_MSS spi_mchp_mss.c)
zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RA8 spi_b_renesas_ra8.c) zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RA8 spi_b_renesas_ra8.c)
zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RA spi_renesas_ra.c)
zephyr_library_sources_ifdef(CONFIG_SPI_RTIO spi_rtio.c) zephyr_library_sources_ifdef(CONFIG_SPI_RTIO spi_rtio.c)
zephyr_library_sources_ifdef(CONFIG_SPI_ASYNC spi_signal.c) zephyr_library_sources_ifdef(CONFIG_SPI_ASYNC spi_signal.c)
zephyr_library_sources_ifdef(CONFIG_SPI_ITE_IT8XXX2 spi_it8xxx2.c) zephyr_library_sources_ifdef(CONFIG_SPI_ITE_IT8XXX2 spi_it8xxx2.c)

2
drivers/spi/Kconfig
View file

@ -165,4 +165,6 @@ source "drivers/spi/Kconfig.renesas_ra8"
source "drivers/spi/Kconfig.it8xxx2" source "drivers/spi/Kconfig.it8xxx2"
source "drivers/spi/Kconfig.renesas_ra"
endif # SPI endif # SPI

35
drivers/spi/Kconfig.renesas_ra Normal file
View file

@ -0,0 +1,35 @@
# Renesas RA Family
# Copyright (c) 2024 Renesas Electronics Corporation
# SPDX-License-Identifier: Apache-2.0
config SPI_RENESAS_RA
bool "Renesas RA SPI"
default y
depends on DT_HAS_RENESAS_RA_SPI_ENABLED
select USE_RA_FSP_SPI
select PINCTRL
help
Enable Renesas RA SPI Driver.
if SPI_RENESAS_RA
config SPI_INTERRUPT
bool "RA MCU SPI Interrupt Support"
help
Enable Interrupt support for the SPI Driver of RA family.
config SPI_RA_DTC
bool "RA MCU SPI DTC Support"
select USE_RA_FSP_DTC
help
Enable the SPI DTC mode for SPI instances
config SPI_USE_HW_SS
bool "RA MCU SPI Hardware Slave Select support"
default y
depends on !SOC_SERIES_RA2A1
help
Use Slave Select pin instead of software Slave Select.
endif # SPI_RENESAS_RA

826
drivers/spi/spi_renesas_ra.c Normal file
View file

@ -0,0 +1,826 @@
/*
* Copyright (c) 2024 Renesas Electronics Corporation
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT renesas_ra_spi
#include <zephyr/drivers/spi.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/irq.h>
#include <soc.h>
#include <instances/r_dtc.h>
#include <instances/r_spi.h>
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(ra_spi);
#include "spi_context.h"
#if defined(CONFIG_SPI_INTERRUPT)
void spi_rxi_isr(void);
void spi_txi_isr(void);
void spi_tei_isr(void);
void spi_eri_isr(void);
#endif
struct ra_spi_config {
const struct pinctrl_dev_config *pcfg;
};
struct ra_spi_data {
struct spi_context ctx;
uint8_t dfs;
struct st_spi_instance_ctrl spi;
struct st_spi_cfg fsp_config;
struct st_spi_extended_cfg fsp_config_extend;
#if CONFIG_SPI_INTERRUPT
uint32_t data_len;
#endif
#if defined(CONFIG_SPI_RA_DTC)
/* RX */
struct st_transfer_instance rx_transfer;
struct st_dtc_instance_ctrl rx_transfer_ctrl;
struct st_transfer_info rx_transfer_info;
struct st_transfer_cfg rx_transfer_cfg;
struct st_dtc_extended_cfg rx_transfer_cfg_extend;
/* TX */
struct st_transfer_instance tx_transfer;
struct st_dtc_instance_ctrl tx_transfer_ctrl;
struct st_transfer_info tx_transfer_info;
struct st_transfer_cfg tx_transfer_cfg;
struct st_dtc_extended_cfg tx_transfer_cfg_extend;
#endif
};
static void spi_cb(spi_callback_args_t *p_args)
{
struct device *dev = (struct device *)p_args->p_context;
struct ra_spi_data *data = dev->data;
switch (p_args->event) {
case SPI_EVENT_TRANSFER_COMPLETE:
spi_context_cs_control(&data->ctx, false);
spi_context_complete(&data->ctx, dev, 0);
break;
case SPI_EVENT_ERR_MODE_FAULT: /* Mode fault error */
case SPI_EVENT_ERR_READ_OVERFLOW: /* Read overflow error */
case SPI_EVENT_ERR_PARITY: /* Parity error */
case SPI_EVENT_ERR_OVERRUN: /* Overrun error */
case SPI_EVENT_ERR_FRAMING: /* Framing error */
case SPI_EVENT_ERR_MODE_UNDERRUN: /* Underrun error */
spi_context_cs_control(&data->ctx, false);
spi_context_complete(&data->ctx, dev, -EIO);
break;
default:
break;
}
}
static int ra_spi_configure(const struct device *dev, const struct spi_config *config)
{
struct ra_spi_data *data = dev->data;
fsp_err_t fsp_err;
if (spi_context_configured(&data->ctx, config)) {
/* Nothing to do */
return 0;
}
if (data->spi.open != 0) {
R_SPI_Close(&data->spi);
}
if ((config->operation & SPI_FRAME_FORMAT_TI) == SPI_FRAME_FORMAT_TI) {
return -ENOTSUP;
}
if (config->operation & SPI_OP_MODE_SLAVE) {
data->fsp_config.operating_mode = SPI_MODE_SLAVE;
} else {
data->fsp_config.operating_mode = SPI_MODE_MASTER;
}
if (SPI_MODE_GET(config->operation) & SPI_MODE_CPOL) {
data->fsp_config.clk_polarity = SPI_CLK_POLARITY_HIGH;
} else {
data->fsp_config.clk_polarity = SPI_CLK_POLARITY_LOW;
}
if (SPI_MODE_GET(config->operation) & SPI_MODE_CPHA) {
data->fsp_config.clk_phase = SPI_CLK_PHASE_EDGE_EVEN;
} else {
if (data->fsp_config.operating_mode == SPI_MODE_MASTER) {
data->fsp_config.clk_phase = SPI_CLK_PHASE_EDGE_ODD;
} else {
LOG_ERR("Invalid clock phase");
return -EINVAL;
}
}
if (config->operation & SPI_TRANSFER_LSB) {
data->fsp_config.bit_order = SPI_BIT_ORDER_LSB_FIRST;
} else {
data->fsp_config.bit_order = SPI_BIT_ORDER_MSB_FIRST;
}
if (config->operation & SPI_CS_ACTIVE_HIGH) {
data->fsp_config_extend.ssl_polarity = SPI_SSLP_HIGH;
} else {
data->fsp_config_extend.ssl_polarity = SPI_SSLP_LOW;
}
if (!(config->operation & SPI_OP_MODE_SLAVE)) {
LOG_INF("frequency: %d", config->frequency);
fsp_err = R_SPI_CalculateBitrate(config->frequency,
&data->fsp_config_extend.spck_div);
if (fsp_err != FSP_SUCCESS) {
LOG_ERR("spi frequency calculate error %d", fsp_err);
return -EIO;
}
}
data->fsp_config_extend.spi_comm = SPI_COMMUNICATION_FULL_DUPLEX;
if (spi_cs_is_gpio(config) || !IS_ENABLED(CONFIG_SPI_USE_HW_SS)) {
data->fsp_config_extend.spi_clksyn = SPI_SSL_MODE_CLK_SYN;
} else {
data->fsp_config_extend.spi_clksyn = SPI_SSL_MODE_SPI;
data->fsp_config_extend.ssl_select = SPI_SSL_SELECT_SSL0;
}
data->fsp_config.p_extend = &data->fsp_config_extend;
data->fsp_config.p_callback = spi_cb;
data->fsp_config.p_context = dev;
fsp_err = R_SPI_Open(&data->spi, &data->fsp_config);
if (fsp_err != FSP_SUCCESS) {
LOG_ERR("R_SPI_Open error: %d", fsp_err);
return -EIO;
}
data->ctx.config = config;
return 0;
}
static bool ra_spi_transfer_ongoing(struct ra_spi_data *data)
{
#if defined(CONFIG_SPI_INTERRUPT)
return (spi_context_tx_on(&data->ctx) || spi_context_rx_on(&data->ctx));
#else
if (spi_context_total_tx_len(&data->ctx) < spi_context_total_rx_len(&data->ctx)) {
return (spi_context_tx_on(&data->ctx) || spi_context_rx_on(&data->ctx));
} else {
return (spi_context_tx_on(&data->ctx) && spi_context_rx_on(&data->ctx));
}
#endif
}
#ifndef CONFIG_SPI_INTERRUPT
static int ra_spi_transceive_slave(struct ra_spi_data *data)
{
R_SPI0_Type *p_spi_reg = data->spi.p_regs;
spi_bit_width_t spi_width =
(spi_bit_width_t)(SPI_WORD_SIZE_GET(data->ctx.config->operation) - 1);
if (p_spi_reg->SPSR_b.SPTEF && spi_context_tx_buf_on(&data->ctx)) {
uint32_t tx;
if (data->ctx.tx_buf != NULL) {
if (data->dfs > 2) {
tx = *(uint32_t *)(data->ctx.tx_buf);
} else if (data->dfs > 1) {
tx = *(uint16_t *)(data->ctx.tx_buf);
} else {
tx = *(uint8_t *)(data->ctx.tx_buf);
}
} else {
tx = 0;
}
/* Update data register */
if (SPI_BIT_WIDTH_16_BITS < spi_width) {
p_spi_reg->SPDR = (uint32_t)tx;
} else if (SPI_BIT_WIDTH_8_BITS >= spi_width) {
p_spi_reg->SPDR_BY = (uint8_t)tx;
} else {
p_spi_reg->SPDR_HA = (uint16_t)tx;
}
spi_context_update_tx(&data->ctx, data->dfs, 1);
} else {
p_spi_reg->SPCR_b.SPTIE = 0;
}
if (p_spi_reg->SPSR_b.SPRF && spi_context_rx_buf_on(&data->ctx)) {
uint32_t rx;
/* Update RX data */
if (SPI_BIT_WIDTH_16_BITS < spi_width) {
rx = (uint32_t)p_spi_reg->SPDR;
} else if (SPI_BIT_WIDTH_8_BITS >= spi_width) {
rx = (uint8_t)p_spi_reg->SPDR_BY;
} else {
rx = (uint16_t)p_spi_reg->SPDR_HA;
}
if (data->dfs > 2) {
UNALIGNED_PUT(rx, (uint32_t *)data->ctx.rx_buf);
} else if (data->dfs > 1) {
UNALIGNED_PUT(rx, (uint16_t *)data->ctx.rx_buf);
} else {
UNALIGNED_PUT(rx, (uint8_t *)data->ctx.rx_buf);
}
spi_context_update_rx(&data->ctx, data->dfs, 1);
}
return 0;
}
static int ra_spi_transceive_master(struct ra_spi_data *data)
{
R_SPI0_Type *p_spi_reg = data->spi.p_regs;
spi_bit_width_t spi_width =
(spi_bit_width_t)(SPI_WORD_SIZE_GET(data->ctx.config->operation) - 1);
uint32_t tx;
uint32_t rx;
/* Tx transfer */
if (spi_context_tx_buf_on(&data->ctx)) {
if (data->dfs > 2) {
tx = *(uint32_t *)(data->ctx.tx_buf);
} else if (data->dfs > 1) {
tx = *(uint16_t *)(data->ctx.tx_buf);
} else {
tx = *(uint8_t *)(data->ctx.tx_buf);
}
} else {
tx = 0U;
}
while (!p_spi_reg->SPSR_b.SPTEF) {
}
/* Update data register */
if (SPI_BIT_WIDTH_16_BITS < spi_width) {
p_spi_reg->SPDR = (uint32_t)tx;
} else if (SPI_BIT_WIDTH_8_BITS >= spi_width) {
p_spi_reg->SPDR_BY = (uint8_t)tx;
} else {
p_spi_reg->SPDR_HA = (uint16_t)tx;
}
spi_context_update_tx(&data->ctx, data->dfs, 1);
if (p_spi_reg->SPCR_b.TXMD == 0x0) {
while (!p_spi_reg->SPSR_b.SPRF) {
}
/* Update RX data */
if (SPI_BIT_WIDTH_16_BITS < spi_width) {
rx = (uint32_t)p_spi_reg->SPDR;
} else if (SPI_BIT_WIDTH_8_BITS >= spi_width) {
rx = (uint8_t)p_spi_reg->SPDR_BY;
} else {
rx = (uint16_t)p_spi_reg->SPDR_HA;
}
if (spi_context_rx_buf_on(&data->ctx)) {
if (data->dfs > 2) {
UNALIGNED_PUT(rx, (uint32_t *)data->ctx.rx_buf);
} else if (data->dfs > 1) {
UNALIGNED_PUT(rx, (uint16_t *)data->ctx.rx_buf);
} else {
UNALIGNED_PUT(rx, (uint8_t *)data->ctx.rx_buf);
}
}
spi_context_update_rx(&data->ctx, data->dfs, 1);
}
return 0;
}
static int ra_spi_transceive_data(struct ra_spi_data *data)
{
uint16_t operation = data->ctx.config->operation;
if (SPI_OP_MODE_GET(operation) == SPI_OP_MODE_MASTER) {
ra_spi_transceive_master(data);
} else {
ra_spi_transceive_slave(data);
}
return 0;
}
#endif
static int transceive(const struct device *dev, const struct spi_config *config,
const struct spi_buf_set *tx_bufs, const struct spi_buf_set *rx_bufs,
bool asynchronous, spi_callback_t cb, void *userdata)
{
struct ra_spi_data *data = dev->data;
R_SPI0_Type *p_spi_reg;
int ret = 0;
if (!tx_bufs && !rx_bufs) {
return 0;
}
#ifndef CONFIG_SPI_INTERRUPT
if (asynchronous) {
return -ENOTSUP;
}
#endif
spi_context_lock(&data->ctx, asynchronous, cb, userdata, config);
ret = ra_spi_configure(dev, config);
if (ret) {
goto end;
}
data->dfs = ((SPI_WORD_SIZE_GET(config->operation) - 1) / 8) + 1;
p_spi_reg = data->spi.p_regs;
spi_bit_width_t spi_width =
(spi_bit_width_t)(SPI_WORD_SIZE_GET(data->ctx.config->operation) - 1);
/* Set buffers info */
spi_context_buffers_setup(&data->ctx, tx_bufs, rx_bufs, data->dfs);
spi_context_cs_control(&data->ctx, true);
#ifdef CONFIG_SPI_INTERRUPT
if (data->ctx.rx_len == 0) {
data->data_len = spi_context_is_slave(&data->ctx)
? spi_context_total_tx_len(&data->ctx)
: data->ctx.tx_len;
} else if (data->ctx.tx_len == 0) {
data->data_len = spi_context_is_slave(&data->ctx)
? spi_context_total_rx_len(&data->ctx)
: data->ctx.rx_len;
} else {
data->data_len = spi_context_is_slave(&data->ctx)
? MAX(spi_context_total_tx_len(&data->ctx),
spi_context_total_rx_len(&data->ctx))
: MIN(data->ctx.tx_len, data->ctx.rx_len);
}
if (data->ctx.rx_buf == NULL) {
R_SPI_Write(&data->spi, data->ctx.tx_buf, data->data_len, spi_width);
} else if (data->ctx.tx_buf == NULL) {
R_SPI_Read(&data->spi, data->ctx.rx_buf, data->data_len, spi_width);
} else {
R_SPI_WriteRead(&data->spi, data->ctx.tx_buf, data->ctx.rx_buf, data->data_len,
spi_width);
}
ret = spi_context_wait_for_completion(&data->ctx);
#else
p_spi_reg->SPCR_b.TXMD = (0x0);
if (!spi_context_tx_on(&data->ctx)) {
p_spi_reg->SPCR_b.TXMD = 0x0;
}
if (!spi_context_rx_on(&data->ctx)) {
p_spi_reg->SPCR_b.TXMD = 0x1; /* tx only */
}
uint32_t spdcr = p_spi_reg->SPDCR;
if (SPI_BIT_WIDTH_16_BITS < spi_width) {
/* Configure Word access to data register. */
spdcr &= ~R_SPI0_SPDCR_SPBYT_Msk;
spdcr |= R_SPI0_SPDCR_SPLW_Msk;
} else if (SPI_BIT_WIDTH_8_BITS >= spi_width) {
/* Set SPBYT so 8bit transfer works with the DTC/DMAC. */
spdcr |= R_SPI0_SPDCR_SPBYT_Msk;
} else {
/* Configure Half-Word access to data register. */
spdcr &= ~(R_SPI0_SPDCR_SPBYT_Msk | R_SPI0_SPDCR_SPLW_Msk);
}
/* Configure data length based on the selected bit width . */
uint32_t bit_width = spi_width;
if (bit_width > SPI_BIT_WIDTH_16_BITS) {
bit_width = ((bit_width + 1) >> 2) - 5;
}
p_spi_reg->SPDCR = (uint8_t)spdcr;
p_spi_reg->SPCMD[0] |= bit_width << 8;
/* Enable the SPI Transfer. */
p_spi_reg->SPCR |= R_SPI0_SPCR_SPE_Msk;
do {
ra_spi_transceive_data(data);
} while (ra_spi_transfer_ongoing(data));
/* Wait for transmision complete */
while (p_spi_reg->SPSR_b.IDLNF) {
}
/* Disable the SPI Transfer. */
p_spi_reg->SPCR_b.SPE = 0;
spi_context_cs_control(&data->ctx, false);
spi_context_complete(&data->ctx, dev, 0);
#endif
#ifdef CONFIG_SPI_SLAVE
if (spi_context_is_slave(&data->ctx) && !ret) {
ret = data->ctx.recv_frames;
}
#endif /* CONFIG_SPI_SLAVE */
end:
spi_context_release(&data->ctx, ret);
return ret;
}
static int ra_spi_transceive(const struct device *dev, const struct spi_config *config,
const struct spi_buf_set *tx_bufs, const struct spi_buf_set *rx_bufs)
{
return transceive(dev, config, tx_bufs, rx_bufs, false, NULL, NULL);
}
#ifdef CONFIG_SPI_ASYNC
static int ra_spi_transceive_async(const struct device *dev, const struct spi_config *config,
const struct spi_buf_set *tx_bufs,
const struct spi_buf_set *rx_bufs, spi_callback_t cb,
void *userdata)
{
return transceive(dev, config, tx_bufs, rx_bufs, true, cb, userdata);
}
#endif /* CONFIG_SPI_ASYNC */
static int ra_spi_release(const struct device *dev, const struct spi_config *config)
{
struct ra_spi_data *data = dev->data;
spi_context_unlock_unconditionally(&data->ctx);
return 0;
}
static const struct spi_driver_api ra_spi_driver_api = {.transceive = ra_spi_transceive,
#ifdef CONFIG_SPI_ASYNC
.transceive_async = ra_spi_transceive_async,
#endif /* CONFIG_SPI_ASYNC */
.release = ra_spi_release};
static int spi_ra_init(const struct device *dev)
{
const struct ra_spi_config *config = dev->config;
struct ra_spi_data *data = dev->data;
int ret;
/* Configure dt provided device signals when available */
ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);
if (ret < 0) {
return ret;
}
ret = spi_context_cs_configure_all(&data->ctx);
if (ret < 0) {
return ret;
}
spi_context_unlock_unconditionally(&data->ctx);
return 0;
}
#if defined(CONFIG_SPI_INTERRUPT)
static void ra_spi_retransmit(struct ra_spi_data *data)
{
spi_bit_width_t spi_width =
(spi_bit_width_t)(SPI_WORD_SIZE_GET(data->ctx.config->operation) - 1);
if (data->ctx.rx_len == 0) {
data->data_len = data->ctx.tx_len;
data->spi.p_tx_data = data->ctx.tx_buf;
data->spi.p_rx_data = NULL;
} else if (data->ctx.tx_len == 0) {
data->data_len = data->ctx.rx_len;
data->spi.p_tx_data = NULL;
data->spi.p_rx_data = data->ctx.rx_buf;
} else {
data->data_len = MIN(data->ctx.tx_len, data->ctx.rx_len);
data->spi.p_tx_data = data->ctx.tx_buf;
data->spi.p_rx_data = data->ctx.rx_buf;
}
data->spi.bit_width = spi_width;
data->spi.rx_count = 0;
data->spi.tx_count = 0;
data->spi.count = data->data_len;
#ifdef CONFIG_SPI_RA_DTC
/* Determine DTC transfer size */
transfer_size_t size;
if (SPI_BIT_WIDTH_16_BITS < spi_width) {
size = TRANSFER_SIZE_4_BYTE;
} else if (SPI_BIT_WIDTH_8_BITS >= spi_width) {
size = TRANSFER_SIZE_1_BYTE;
} else {
size = TRANSFER_SIZE_2_BYTE;
}
if (data->spi.p_cfg->p_transfer_rx) {
/* When the rxi interrupt is called, all transfers will be finished. */
data->spi.rx_count = data->data_len;
transfer_instance_t *p_transfer_rx =
(transfer_instance_t *)data->spi.p_cfg->p_transfer_rx;
transfer_info_t *p_info = p_transfer_rx->p_cfg->p_info;
/* Configure the receive DMA instance. */
p_info->transfer_settings_word_b.size = size;
p_info->length = (uint16_t)data->data_len;
p_info->transfer_settings_word_b.dest_addr_mode = TRANSFER_ADDR_MODE_INCREMENTED;
p_info->p_dest = data->ctx.rx_buf;
if (NULL == data->ctx.rx_buf) {
static uint32_t dummy_rx;
p_info->transfer_settings_word_b.dest_addr_mode = TRANSFER_ADDR_MODE_FIXED;
p_info->p_dest = &dummy_rx;
}
p_transfer_rx->p_api->reconfigure(p_transfer_rx->p_ctrl, p_info);
}
if (data->spi.p_cfg->p_transfer_tx) {
/* When the txi interrupt is called, all transfers will be finished. */
data->spi.tx_count = data->data_len;
transfer_instance_t *p_transfer_tx =
(transfer_instance_t *)data->spi.p_cfg->p_transfer_tx;
transfer_info_t *p_info = p_transfer_tx->p_cfg->p_info;
/* Configure the transmit DMA instance. */
p_info->transfer_settings_word_b.size = size;
p_info->length = (uint16_t)data->data_len;
p_info->transfer_settings_word_b.src_addr_mode = TRANSFER_ADDR_MODE_INCREMENTED;
p_info->p_src = data->ctx.tx_buf;
if (NULL == data->ctx.tx_buf) {
static uint32_t dummy_tx;
p_info->transfer_settings_word_b.src_addr_mode = TRANSFER_ADDR_MODE_FIXED;
p_info->p_src = &dummy_tx;
}
R_SPI0_Type *p_spi_reg = data->spi.p_regs;
p_transfer_tx->p_api->reconfigure(p_transfer_tx->p_ctrl, p_info);
/* Enable the SPI Transfer */
p_spi_reg->SPCR |= R_SPI0_SPCR_SPE_Msk;
}
#endif
}
static void ra_spi_rxi_isr(const struct device *dev)
{
#ifndef CONFIG_SPI_SLAVE
ARG_UNUSED(dev);
spi_rxi_isr();
#else
struct ra_spi_data *data = dev->data;
spi_rxi_isr();
if (spi_context_is_slave(&data->ctx) && data->spi.rx_count == data->spi.count) {
if (data->ctx.rx_buf != NULL && data->ctx.tx_buf != NULL) {
data->ctx.recv_frames = MIN(spi_context_total_tx_len(&data->ctx),
spi_context_total_rx_len(&data->ctx));
} else if (data->ctx.tx_buf == NULL) {
data->ctx.recv_frames = data->data_len;
}
R_BSP_IrqDisable(data->fsp_config.tei_irq);
/* Writing 0 to SPE generatates a TXI IRQ. Disable the TXI IRQ.
* (See Section 38.2.1 SPI Control Register in the RA6T2 manual R01UH0886EJ0100).
*/
R_BSP_IrqDisable(data->fsp_config.txi_irq);
/* Disable the SPI Transfer. */
data->spi.p_regs->SPCR_b.SPE = 0;
/* Re-enable the TXI IRQ and clear the pending IRQ. */
R_BSP_IrqEnable(data->fsp_config.txi_irq);
spi_context_cs_control(&data->ctx, false);
spi_context_complete(&data->ctx, dev, 0);
}
#endif
}
static void ra_spi_txi_isr(const struct device *dev)
{
ARG_UNUSED(dev);
spi_txi_isr();
}
static void ra_spi_tei_isr(const struct device *dev)
{
struct ra_spi_data *data = dev->data;
R_SPI0_Type *p_spi_reg = data->spi.p_regs;
if (data->spi.rx_count == data->spi.count) {
spi_context_update_rx(&data->ctx, 1, data->data_len);
}
if (data->spi.tx_count == data->spi.count) {
spi_context_update_tx(&data->ctx, 1, data->data_len);
}
if (ra_spi_transfer_ongoing(data)) {
R_BSP_IrqDisable(data->spi.p_cfg->txi_irq);
/* Disable the SPI Transfer. */
p_spi_reg->SPCR_b.SPE = 0U;
/* Clear the status register. */
p_spi_reg->SPSR;
p_spi_reg->SPSR = 0;
R_BSP_IrqEnable(data->spi.p_cfg->txi_irq);
#ifndef CONFIG_SPI_RA_DTC
/* Enable the SPI Transfer */
p_spi_reg->SPCR |= R_SPI0_SPCR_SPE_Msk;
#endif
R_ICU->IELSR_b[data->fsp_config.tei_irq].IR = 0U;
ra_spi_retransmit(data);
} else {
spi_tei_isr();
}
}
static void ra_spi_eri_isr(const struct device *dev)
{
ARG_UNUSED(dev);
spi_eri_isr();
}
#endif
#define _ELC_EVENT_SPI_RXI(channel) ELC_EVENT_SPI##channel##_RXI
#define _ELC_EVENT_SPI_TXI(channel) ELC_EVENT_SPI##channel##_TXI
#define _ELC_EVENT_SPI_TEI(channel) ELC_EVENT_SPI##channel##_TEI
#define _ELC_EVENT_SPI_ERI(channel) ELC_EVENT_SPI##channel##_ERI
#define ELC_EVENT_SPI_RXI(channel) _ELC_EVENT_SPI_RXI(channel)
#define ELC_EVENT_SPI_TXI(channel) _ELC_EVENT_SPI_TXI(channel)
#define ELC_EVENT_SPI_TEI(channel) _ELC_EVENT_SPI_TEI(channel)
#define ELC_EVENT_SPI_ERI(channel) _ELC_EVENT_SPI_ERI(channel)
#if defined(CONFIG_SPI_INTERRUPT)
#define RA_SPI_IRQ_CONFIG_INIT(index) \
do { \
ARG_UNUSED(dev); \
\
R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, rxi, irq)] = \
ELC_EVENT_SPI_RXI(DT_INST_PROP(index, channel)); \
R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, txi, irq)] = \
ELC_EVENT_SPI_TXI(DT_INST_PROP(index, channel)); \
R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, tei, irq)] = \
ELC_EVENT_SPI_TEI(DT_INST_PROP(index, channel)); \
R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, eri, irq)] = \
ELC_EVENT_SPI_ERI(DT_INST_PROP(index, channel)); \
\
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(index, rxi, irq), \
DT_INST_IRQ_BY_NAME(index, rxi, priority), ra_spi_rxi_isr, \
DEVICE_DT_INST_GET(index), 0); \
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(index, txi, irq), \
DT_INST_IRQ_BY_NAME(index, txi, priority), ra_spi_txi_isr, \
DEVICE_DT_INST_GET(index), 0); \
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(index, tei, irq), \
DT_INST_IRQ_BY_NAME(index, tei, priority), ra_spi_tei_isr, \
DEVICE_DT_INST_GET(index), 0); \
IRQ_CONNECT(DT_INST_IRQ_BY_NAME(index, eri, irq), \
DT_INST_IRQ_BY_NAME(index, eri, priority), ra_spi_eri_isr, \
DEVICE_DT_INST_GET(index), 0); \
\
irq_enable(DT_INST_IRQ_BY_NAME(index, rxi, irq)); \
irq_enable(DT_INST_IRQ_BY_NAME(index, txi, irq)); \
irq_enable(DT_INST_IRQ_BY_NAME(index, eri, irq)); \
} while (0)
#else
#define RA_SPI_IRQ_CONFIG_INIT(index)
#endif
#ifndef CONFIG_SPI_RA_DTC
#define RA_SPI_DTC_STRUCT_INIT(index)
#define RA_SPI_DTC_INIT(index)
#else
#define RA_SPI_DTC_INIT(index) \
do { \
if (DT_INST_PROP_OR(index, rx_dtc, false)) { \
ra_spi_data_##index.fsp_config.p_transfer_rx = \
&ra_spi_data_##index.rx_transfer; \
} \
if (DT_INST_PROP_OR(index, tx_dtc, false)) { \
ra_spi_data_##index.fsp_config.p_transfer_tx = \
&ra_spi_data_##index.tx_transfer; \
} \
} while (0)
#define RA_SPI_DTC_STRUCT_INIT(index) \
.rx_transfer_info = \
{ \
.transfer_settings_word_b.dest_addr_mode = TRANSFER_ADDR_MODE_INCREMENTED, \
.transfer_settings_word_b.repeat_area = TRANSFER_REPEAT_AREA_DESTINATION, \
.transfer_settings_word_b.irq = TRANSFER_IRQ_END, \
.transfer_settings_word_b.chain_mode = TRANSFER_CHAIN_MODE_DISABLED, \
.transfer_settings_word_b.src_addr_mode = TRANSFER_ADDR_MODE_FIXED, \
.transfer_settings_word_b.size = TRANSFER_SIZE_1_BYTE, \
.transfer_settings_word_b.mode = TRANSFER_MODE_NORMAL, \
.p_dest = (void *)NULL, \
.p_src = (void const *)NULL, \
.num_blocks = 0, \
.length = 0, \
}, \
.rx_transfer_cfg_extend = {.activation_source = DT_INST_IRQ_BY_NAME(index, rxi, irq)}, \
.rx_transfer_cfg = \
{ \
.p_info = &ra_spi_data_##index.rx_transfer_info, \
.p_extend = &ra_spi_data_##index.rx_transfer_cfg_extend, \
}, \
.rx_transfer = \
{ \
.p_ctrl = &ra_spi_data_##index.rx_transfer_ctrl, \
.p_cfg = &ra_spi_data_##index.rx_transfer_cfg, \
.p_api = &g_transfer_on_dtc, \
}, \
.tx_transfer_info = \
{ \
.transfer_settings_word_b.dest_addr_mode = TRANSFER_ADDR_MODE_FIXED, \
.transfer_settings_word_b.repeat_area = TRANSFER_REPEAT_AREA_SOURCE, \
.transfer_settings_word_b.irq = TRANSFER_IRQ_END, \
.transfer_settings_word_b.chain_mode = TRANSFER_CHAIN_MODE_DISABLED, \
.transfer_settings_word_b.src_addr_mode = TRANSFER_ADDR_MODE_INCREMENTED, \
.transfer_settings_word_b.size = TRANSFER_SIZE_1_BYTE, \
.transfer_settings_word_b.mode = TRANSFER_MODE_NORMAL, \
.p_dest = (void *)NULL, \
.p_src = (void const *)NULL, \
.num_blocks = 0, \
.length = 0, \
}, \
.tx_transfer_cfg_extend = {.activation_source = DT_INST_IRQ_BY_NAME(index, txi, irq)}, \
.tx_transfer_cfg = \
{ \
.p_info = &ra_spi_data_##index.tx_transfer_info, \
.p_extend = &ra_spi_data_##index.tx_transfer_cfg_extend, \
}, \
.tx_transfer = { \
.p_ctrl = &ra_spi_data_##index.tx_transfer_ctrl, \
.p_cfg = &ra_spi_data_##index.tx_transfer_cfg, \
.p_api = &g_transfer_on_dtc, \
},
#endif
#define RA_SPI_INIT(index) \
\
PINCTRL_DT_INST_DEFINE(index); \
\
static const struct ra_spi_config ra_spi_config_##index = { \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(index), \
}; \
\
static struct ra_spi_data ra_spi_data_##index = { \
SPI_CONTEXT_CS_GPIOS_INITIALIZE(DT_DRV_INST(index), ctx) \
SPI_CONTEXT_INIT_LOCK(ra_spi_data_##index, ctx), \
SPI_CONTEXT_INIT_SYNC(ra_spi_data_##index, ctx), \
.fsp_config = \
{ \
.channel = DT_INST_PROP(index, channel), \
.rxi_ipl = DT_INST_IRQ_BY_NAME(index, rxi, priority), \
.rxi_irq = DT_INST_IRQ_BY_NAME(index, rxi, irq), \
.txi_ipl = DT_INST_IRQ_BY_NAME(index, txi, priority), \
.txi_irq = DT_INST_IRQ_BY_NAME(index, txi, irq), \
.tei_ipl = DT_INST_IRQ_BY_NAME(index, tei, priority), \
.tei_irq = DT_INST_IRQ_BY_NAME(index, tei, irq), \
.eri_ipl = DT_INST_IRQ_BY_NAME(index, eri, priority), \
.eri_irq = DT_INST_IRQ_BY_NAME(index, eri, irq), \
}, \
RA_SPI_DTC_STRUCT_INIT(index)}; \
\
static int spi_ra_init##index(const struct device *dev) \
{ \
RA_SPI_DTC_INIT(index); \
int err = spi_ra_init(dev); \
if (err != 0) { \
return err; \
} \
RA_SPI_IRQ_CONFIG_INIT(index); \
return 0; \
} \
\
DEVICE_DT_INST_DEFINE(index, spi_ra_init##index, PM_DEVICE_DT_INST_GET(index), \
&ra_spi_data_##index, &ra_spi_config_##index, PRE_KERNEL_1, \
CONFIG_SPI_INIT_PRIORITY, &ra_spi_driver_api);
DT_INST_FOREACH_STATUS_OKAY(RA_SPI_INIT)

34
dts/bindings/spi/renesas,ra-spi.yaml Normal file
View file

@ -0,0 +1,34 @@
# Copyright (c) 2024 Renesas Electronics Corporation
# SPDX-License-Identifier: Apache-2.0
description: Renesas RA SPI controller
compatible: "renesas,ra-spi"
include: [spi-controller.yaml, pinctrl-device.yaml]
properties:
channel:
type: int
required: true
reg:
required: true
tx-dtc:
type: boolean
rx-dtc:
type: boolean
pinctrl-0:
required: true
pinctrl-names:
required: true
interrupts:
required: true
interrupt-names:
required: true

5
modules/Kconfig.renesas_fsp
View file

@ -15,6 +15,11 @@ config USE_RA_FSP_SCI_B_UART
help help
Enable RA FSP SCI-B UART driver Enable RA FSP SCI-B UART driver
config USE_RA_FSP_SPI
bool
help
Enable RA FSP SPI driver
config USE_RA_FSP_DTC config USE_RA_FSP_DTC
bool bool
help help