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#include <rtdevice.h>
#include "gtypes.h"
#include "gd_spi.h"
#include "drv_ssi.h"
#include "platform.h"
/*---------------------------------------------------------------------------*/
/* local defines */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/* local data types */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/* local data */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/* local functions */
/*---------------------------------------------------------------------------*/
static void *gk_get_spi_dev_pri_data(struct rt_spi_device *device)
{
return device->parent.user_data;
}
static rt_err_t gk_spi_configure(struct rt_spi_device *device, struct rt_spi_configuration *configuration)
{
struct gk_spi_slave_info *spi_slave;
struct gk_spi_controller *spi_control;
GD_SPI_OPEN_PARAMS_S openParamsP;
rt_uint32_t spi_hz;
rt_int32_t ret;
rt_uint8_t data_width = 8,polarity;
if(!device || !configuration)
{
rt_kprintf("%s,%d,param wrong!\n",__FUNCTION__,__LINE__);
return RT_ERROR;
}
spi_slave = (struct gk_spi_slave_info *)gk_get_spi_dev_pri_data(device);
spi_control = spi_slave->control;
rt_sem_take(&spi_control->xfer_lock, RT_WAITING_FOREVER);
if(spi_slave->spihandle > 0)
{
GD_SPI_Close(&spi_slave->spihandle);
spi_slave->spihandle = -1;
}
openParamsP.spi = spi_control->id;
openParamsP.slave = spi_slave->id;
openParamsP.csgpio = spi_slave->cs_pin;
openParamsP.used_irq = 1;
if (configuration->max_hz > GD_SPI_FREQ_81M)
spi_hz = GD_SPI_FREQ_81M;
else
spi_hz = configuration->max_hz;
openParamsP.baudrate = spi_hz;
/* CPOL */
if (configuration->mode & RT_SPI_CPOL && configuration->mode & RT_SPI_CPHA)
{
polarity = SPI_POLARITY_MODE3;
}
else if(configuration->mode & RT_SPI_CPOL && !configuration->mode & RT_SPI_CPHA)
{
polarity = SPI_POLARITY_MODE2;
}
else if(!configuration->mode & RT_SPI_CPOL && configuration->mode & RT_SPI_CPHA)
{
polarity = SPI_POLARITY_MODE1;
}
else
polarity = SPI_POLARITY_MODE0;
openParamsP.polarity = polarity;
ret = GD_SPI_Open(&openParamsP,&(spi_slave->spihandle));
if(ret != GD_OK)
{
rt_kprintf("GD_SPI_Open failed!\n");
rt_sem_release(&spi_control->xfer_lock);
return RT_ERROR;
}
/* data_width */
if (configuration->data_width <= 8)
{
data_width = 8;
}
else if (configuration->data_width <= 16)
{
data_width = 16;
}
ret = GD_SPI_SetDatFormat(spi_slave->spihandle, data_width);;
if(ret != GD_OK)
{
rt_kprintf("GD_SPI_SetDatFormat failed!\n");
rt_sem_release(&spi_control->xfer_lock);
return RT_ERROR;
}
rt_sem_release(&spi_control->xfer_lock);
return RT_EOK;
}
static rt_uint32_t gk_spi_xfer(struct rt_spi_device *device, struct rt_spi_message *message)
{
struct gk_spi_slave_info *spi_slave;
struct gk_spi_controller *spi_control;
GERR ret = GD_OK;
if(!device || !message)
{
rt_kprintf("%s,%d,param wrong!\n",__FUNCTION__,__LINE__);
return 0;
}
spi_slave = (struct gk_spi_slave_info *)gk_get_spi_dev_pri_data(device);
if(!spi_slave)
{
rt_kprintf("%s,%d,param wrong!\n",__FUNCTION__,__LINE__);
return 0;
}
spi_control = spi_slave->control;
if(spi_slave->spihandle < 0)
{
rt_kprintf("%s,%d,spi channel not configured!\n",__FUNCTION__,__LINE__);
return 0;
}
if(!message)
{
rt_kprintf("%s,%d,params wrong!\n",__FUNCTION__,__LINE__);
return 0;
}
rt_sem_take(&spi_control->xfer_lock, RT_WAITING_FOREVER);
if(message->cs_take)
GD_SPI_GetDevice(spi_slave->spihandle);
if(message->recv_buf && message->send_buf)
ret = GD_SPI_WriteThenReadBytes(spi_slave->spihandle,(rt_uint8_t *)message->send_buf,message->length,
(rt_uint8_t *)message->recv_buf,message->length);
else if(message->send_buf && !message->recv_buf)
ret = GD_SPI_WriteBytes(spi_slave->spihandle,(rt_uint8_t *)message->send_buf,message->length);
else if(!message->send_buf && message->recv_buf)
ret = GD_SPI_WriteThenReadBytes(spi_slave->spihandle,NULL,0,(rt_uint8_t *)message->recv_buf,message->length);
if(message->cs_release)
GD_SPI_ReleaseDevice(spi_slave->spihandle);
rt_sem_release(&spi_control->xfer_lock);
if(ret != GD_OK)
{
rt_kprintf("%s,%d,transfer error!\n",__FUNCTION__,__LINE__);
return 0;
}
else
{
return message->length;
}
}
static struct rt_spi_ops gk_spi_ops = {
.configure = gk_spi_configure, .xfer = gk_spi_xfer,
};
int gk_spi_probe(void *priv_data)
{
int ret,i;
char spi_dev_name[20] = {0};
char spi_bus_name[20] = {0};
char spi_lock_name[20] = {0};
struct gk_spi_controller *spi_control;
struct gk_spi_controller_data *spi_controller_data = (struct gk_spi_controller_data *)priv_data;
struct gk_spi_slave_info **control_slave;
struct gk_spi_slave_info *spi_slave,*next_slave;
if (!spi_controller_data)
{
rt_kprintf("%s,%d input param wrong!\n",__FUNCTION__,__LINE__);
return -1;
}
spi_control = (struct gk_spi_controller *)rt_malloc(sizeof(struct gk_spi_controller));
if (!spi_control)
{
rt_kprintf("%s,%d malloc failed!\n",__FUNCTION__,__LINE__);
return -1;
}
rt_memset(spi_control, 0, sizeof(struct gk_spi_controller));
spi_control->id = spi_controller_data->id;
rt_sprintf(spi_lock_name, "%s%d", "spi_lock", spi_control->id);
rt_sprintf(spi_bus_name, "%s%d", "spi_bus", spi_control->id);
rt_sem_init(&spi_control->xfer_lock, spi_lock_name, 1, RT_IPC_FLAG_FIFO);
ret = rt_spi_bus_register(&spi_control->spi_bus, spi_bus_name, &gk_spi_ops);
control_slave = &spi_control->spi_slave;
for (i = 0; i < spi_controller_data->total_slave; i++)
{
spi_slave = (struct gk_spi_slave_info *)rt_malloc(sizeof(struct gk_spi_slave_info));
if (!spi_slave)
{
rt_kprintf("%s,%d malloc failed!\n",__FUNCTION__,__LINE__);
goto exit;
}
rt_memset(spi_slave, 0, sizeof(struct gk_spi_slave_info));
spi_slave->id = i;
spi_slave->control = spi_control;
spi_slave->cs_pin = spi_controller_data->slave_cs_pin[i];
spi_slave->spihandle = -1;
rt_sprintf(spi_dev_name, "%s%d%s%d", "ssi", spi_control->id, "_", spi_slave->id);
*control_slave = spi_slave;
control_slave = &spi_slave->next;
ret = rt_spi_bus_attach_device(&spi_slave->spi_device, spi_dev_name,spi_bus_name, spi_slave);
if (ret != RT_EOK)
{
rt_kprintf("register dev to bus failed...\n");
goto exit;
}
}
spi_controller_data->control = spi_control;
GD_SPI_Init();
return RT_EOK;
exit:
spi_slave = spi_control->spi_slave;
while (spi_slave != RT_NULL)
{
next_slave = spi_slave->next;
rt_free(spi_slave);
spi_slave = next_slave;
}
rt_sem_detach(&spi_control->xfer_lock);
rt_free(spi_control);
return RT_ERROR;
}
int gk_spi_exit(void *priv_data)
{
struct gk_spi_controller *spi_control;
struct gk_spi_controller_data *plat_data;
struct gk_spi_slave_info *spi_slave;
struct gk_spi_slave_info *next_slave;
plat_data = (struct gk_spi_controller_data *)priv_data;
spi_control = plat_data->control;
spi_slave = spi_control->spi_slave;
while (spi_slave != RT_NULL)
{
next_slave = spi_slave->next;
rt_free(spi_slave);
spi_slave = next_slave;
}
rt_sem_detach(&spi_control->xfer_lock);
rt_free(spi_control);
return RT_EOK;
}
struct gk_platform_driver gk_spi_driver_ops = {
.name = "spi", .probe = gk_spi_probe, .remove = gk_spi_exit,
};
void rt_hw_spi_init(void)
{
gk_platform_driver_init(&gk_spi_driver_ops);
}
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