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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Email: [email protected]
*
* Change Logs:
* Date Author Notes
* 2022-11-10 liqiaozhong first commit
* 2023-03-08 liqiaozhong support 4 spis and qspi working together
*
*/
#include "rtconfig.h"
#include <rtthread.h>
#include <rtdevice.h>
#include "interrupt.h"
#define LOG_TAG "spi_msg_drv"
#include "drv_log.h"
#include <string.h>
#include "fparameters.h"
#include "fcpu_info.h"
#include "fkernel.h"
#include "ftypes.h"
#ifdef RT_USING_SMART
#include <ioremap.h>
#endif
#include <dfs_file.h>
#include "fspim_msg.h"
#include "fspim_msg_hw.h" /* include low-level header file for internal probe */
#include "drv_spi_msg.h"
/************************** Constant Definitions *****************************/
/**************************** Type Definitions *******************************/
/************************** Variable Definitions *****************************/
typedef struct
{
struct rt_spi_bus spi_bus;
FSpiMsgCtrl spim_msg_instance;
const char *name;
} phytium_spi_bus;
/***************** Macros (Inline Functions) Definitions *********************/
#define EVENT_RX_DONE (1 << 1)
/*******************************Api Functions*********************************/
static rt_err_t spim_configure(struct rt_spi_device *device, struct rt_spi_configuration *configuration);
static rt_ssize_t spim_xfer(struct rt_spi_device *device, struct rt_spi_message *message);
static const struct rt_spi_ops spim_ops =
{
.configure = spim_configure,
.xfer = spim_xfer
};
static rt_err_t spim_configure(struct rt_spi_device *device,
struct rt_spi_configuration *configuration)
{
FError ret = 0;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(configuration != RT_NULL);
phytium_spi_bus *user_data_cfg = device->parent.user_data;
FSpiMsgConfig *set_input_cfg = &user_data_cfg->spim_msg_instance.spi_msg_config;
/* set fspim device according to configuration */
/* Modifying the CPOL and CPHA parameters requires support from relevant documentation*/
if (configuration->data_width == 8)
{
set_input_cfg->n_bytes = FSPIM_1_BYTE;
}
/* send spi_cfg to RT-Thread sys */
ret = FSpiMsgCfgInitialize(&user_data_cfg->spim_msg_instance, set_input_cfg);
if (0 != ret)
{
return -RT_ERROR;
}
return ret;
}
static rt_ssize_t spim_xfer(struct rt_spi_device *device, struct rt_spi_message *message)
{
RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->parent.user_data != RT_NULL);
RT_ASSERT(message != RT_NULL);
rt_ssize_t message_length;
rt_uint8_t *recv_buf;
const rt_uint8_t *send_buf;
/* recv spi_cfg from RT-Thread sys */
phytium_spi_bus *user_data_xfer = device->parent.user_data;
FSpiMsgCtrl *xfer_spim_msg_instance = &user_data_xfer->spim_msg_instance;
FError tx_rx_result = 0;
message_length = message->length;
recv_buf = message->recv_buf;
send_buf = message->send_buf;
if (message->cs_take)
{
FSpiMsgSetChipSelection(xfer_spim_msg_instance, 1);
}
if (message_length > 0)
{
if (send_buf == RT_NULL && recv_buf != RT_NULL)
{
/* receive message */
tx_rx_result = FSpiMsgTransfer(xfer_spim_msg_instance, RT_NULL, recv_buf, message_length);
}
else if (send_buf != RT_NULL && recv_buf == RT_NULL)
{
/* send message */
tx_rx_result = FSpiMsgTransfer(xfer_spim_msg_instance, send_buf, RT_NULL, message_length);
}
else if (send_buf != RT_NULL && recv_buf != RT_NULL)
{
/* send and recv */
tx_rx_result = FSpiMsgTransfer(xfer_spim_msg_instance, send_buf, recv_buf, message_length);
}
}
if (0 != tx_rx_result)
{
rt_kprintf("FSpimTransferByInterrupt() fail!!!");
message_length = 0;
}
if (message->cs_release)
{
FSpiMsgSetChipSelection(xfer_spim_msg_instance, 0);
}
return message_length;
}
static void FSpiMsgIntrInit(FSpiMsgCtrl *ctrl, const FSpiMsgConfig *config)
{
rt_uint32_t cpu_id = rt_hw_cpu_id();
rt_hw_interrupt_set_target_cpus(config->irq_num, cpu_id);
rt_hw_interrupt_set_priority(config->irq_num, config->irq_priority);
ctrl->cmd_completion = CMD_MSG_NOT_COMPLETION;
rt_hw_interrupt_install(config->irq_num, FSpiMsgInterruptHandler, ctrl, NULL);
rt_hw_interrupt_umask(config->irq_num);
}
static int spi_init(phytium_spi_bus *spi_bus)
{
FError ret = 0;
FSpiMsgConfig input_cfg = *FSpiMsgLookupConfig(spi_bus->spim_msg_instance.spi_msg_config.instance_id);
#ifdef RT_USING_SMART
input_cfg.spi_msg.regfile = (uintptr)rt_ioremap((void *)input_cfg.spi_msg.regfile, 0x1000);
input_cfg.spi_msg.shmem = (uintptr)rt_ioremap((void *)input_cfg.spi_msg.shmem, 0x1000);
#endif
FSpiMsgIntrInit(&spi_bus->spim_msg_instance, &input_cfg);
/* send spi_cfg to RT-Thread sys */
ret = FSpiMsgCfgInitialize(&spi_bus->spim_msg_instance, &input_cfg);
if (0 != ret)
{
return -RT_ERROR;
}
rt_spi_bus_register(&spi_bus->spi_bus, spi_bus->name, &spim_ops);
RT_ASSERT((struct rt_spi_device *)rt_device_find(spi_bus->name));
return 0;
}
#ifdef RT_USING_SPIM0_MSG
static phytium_spi_bus spi0_bus;
#endif
#ifdef RT_USING_SPIM1_MSG
static phytium_spi_bus spi1_bus;
#endif
#ifdef RT_USING_SPIM2_MSG
static phytium_spi_bus spi2_bus;
#endif
#ifdef RT_USING_SPIM3_MSG
static phytium_spi_bus spi3_bus;
#endif
int rt_hw_spi_init(void)
{
#ifdef RT_USING_SPIM0_MSG
spi0_bus.name = "SPI0";
spi0_bus.spim_msg_instance.spi_msg_config.instance_id = FSPI0_MSG_ID;
FIOPadSetSpimMux(FSPI0_MSG_ID);
spi_init(&spi0_bus);
#endif
#ifdef RT_USING_SPIM1_MSG
spi1_bus.name = "SPI1";
spi1_bus.spim_msg_instance.spi_msg_config.instance_id = FSPI1_MSG_ID;
FIOPadSetSpimMux(FSPI1_MSG_ID);
spi_init(&spi1_bus);
#endif
return 0;
}
INIT_DEVICE_EXPORT(rt_hw_spi_init);
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