[BSP] add spi bus driver. | 添加spi总线驱动.

This commit is contained in:
liu2guang 2018-03-30 12:20:42 +08:00
parent 5f81f8e771
commit 9826f07dfa
4 changed files with 409 additions and 6 deletions

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@ -36,7 +36,7 @@ endchoice
if BOARD_RT1050_EVK if BOARD_RT1050_EVK
menu "RT1050_EVK Bsp Config" menu "RT1050_EVK Bsp Config"
menu "Select uart device" menu "Select uart drivers"
config RT_USING_UART1 config RT_USING_UART1
bool "Using uart1" bool "Using uart1"
select RT_USING_SERIAL select RT_USING_SERIAL
@ -71,13 +71,32 @@ menu "Select uart device"
default n default n
endmenu endmenu
#menu "SDRAM drive support" menu "Select spibus drivers"
config RT_USING_SPIBUS1
bool "Using spi1 bus"
select RT_USING_SPI
default n
config RT_USING_SPIBUS2
bool "Using spi2 bus"
select RT_USING_SPI
default n
config RT_USING_SPIBUS3
bool "Using spi3 bus"
select RT_USING_SPI
default n
config RT_USING_SPIBUS4
bool "Using spi4 bus"
select RT_USING_SPI
default y
endmenu
#menu "SDRAM driver support"
config RT_USING_SDRAM config RT_USING_SDRAM
bool "Using sdram" bool "Using sdram"
default y default y
#endmenu #endmenu
#menu "RTC drive support" #menu "RTC driver support"
config RT_USING_RTC_HP config RT_USING_RTC_HP
bool "Using hp rtc" bool "Using hp rtc"
select RT_USING_RTC select RT_USING_RTC
@ -102,7 +121,7 @@ endif
if BOARD_RT1050_FIRE if BOARD_RT1050_FIRE
menu "RT1050_FIRE Bsp Config" menu "RT1050_FIRE Bsp Config"
menu "Select uart device" menu "Select uart drivers"
config RT_USING_UART1 config RT_USING_UART1
bool "Using uart1" bool "Using uart1"
select RT_USING_SERIAL select RT_USING_SERIAL
@ -137,13 +156,32 @@ menu "Select uart device"
default n default n
endmenu endmenu
#menu "SDRAM drive support" menu "Select spibus drivers"
config RT_USING_SPIBUS1
bool "Using spi1 bus"
select RT_USING_SPI
default n
config RT_USING_SPIBUS2
bool "Using spi2 bus"
select RT_USING_SPI
default n
config RT_USING_SPIBUS3
bool "Using spi3 bus"
select RT_USING_SPI
default n
config RT_USING_SPIBUS4
bool "Using spi4 bus"
select RT_USING_SPI
default y
endmenu
#menu "SDRAM driver support"
config RT_USING_SDRAM config RT_USING_SDRAM
bool "Using sdram" bool "Using sdram"
default y default y
#endmenu #endmenu
#menu "RTC drive support" #menu "RTC driver support"
config RT_USING_RTC_HP config RT_USING_RTC_HP
bool "Using hp rtc" bool "Using hp rtc"
select RT_USING_RTC select RT_USING_RTC

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@ -17,6 +17,7 @@ CPPDEFINES = []
if GetDepend('RT_USING_SDRAM'): if GetDepend('RT_USING_SDRAM'):
src = src + ['./drv_sdram.c'] src = src + ['./drv_sdram.c']
# add pin driver code
if GetDepend('RT_USING_PIN'): if GetDepend('RT_USING_PIN'):
src += ['drv_pin.c'] src += ['drv_pin.c']
@ -24,6 +25,10 @@ if GetDepend('RT_USING_PIN'):
if GetDepend('RT_USING_RTC_HP'): if GetDepend('RT_USING_RTC_HP'):
src = src + ['./drv_rtc.c'] src = src + ['./drv_rtc.c']
# add spibus driver code
if GetDepend('RT_USING_SPI'):
src += ['drv_spi_bus.c']
if GetDepend('BOARD_RT1050_EVK'): if GetDepend('BOARD_RT1050_EVK'):
src += ['hyper_flash_boot.c'] src += ['hyper_flash_boot.c']

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@ -0,0 +1,336 @@
/*
* File : drv_spi_bus.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006-2013, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2018-03-27 Liuguang the first version.
*/
#include "drv_spi_bus.h"
#include "fsl_common.h"
#include "fsl_iomuxc.h"
#include "fsl_lpspi.h"
#ifdef RT_USING_SPI
#define LPSPI_CLK_SOURCE (1U)
#define LPSPI_CLK_SOURCE_DIVIDER (7U)
#if defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL
#error "Please don't define 'FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL'!"
#endif
struct rt1050_spi
{
LPSPI_Type *base;
struct rt_spi_configuration *cfg;
};
struct rt1050_hw_spi_cs
{
rt_uint32_t pin;
};
static uint32_t rt1050_get_lpspi_freq(void)
{
uint32_t freq = 0;
/* CLOCK_GetMux(kCLOCK_LpspiMux):
00b: derive clock from PLL3 PFD1 720M
01b: derive clock from PLL3 PFD0 720M
10b: derive clock from PLL2 528M
11b: derive clock from PLL2 PFD2 396M
*/
switch(CLOCK_GetMux(kCLOCK_LpspiMux))
{
case 0:
freq = CLOCK_GetFreq(kCLOCK_Usb1PllPfd1Clk);
break;
case 1:
freq = CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk);
break;
case 2:
freq = CLOCK_GetFreq(kCLOCK_SysPllClk);
break;
case 3:
freq = CLOCK_GetFreq(kCLOCK_SysPllPfd2Clk);
break;
}
freq /= (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1U);
return freq;
}
static rt_err_t rt1050_spi_init(LPSPI_Type *base, struct rt_spi_configuration *cfg)
{
lpspi_master_config_t masterConfig;
if(cfg->data_width != 8 && cfg->data_width != 16 && cfg->data_width != 32)
{
return RT_EINVAL;
}
#if defined(RT_USING_SPIBUS1)
if(base == LPSPI1)
{
IOMUXC_SetPinMux (IOMUXC_GPIO_EMC_27_LPSPI1_SCK, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_27_LPSPI1_SCK, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_EMC_28_LPSPI1_SDO, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_28_LPSPI1_SDO, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_EMC_29_LPSPI1_SDI, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_29_LPSPI1_SDI, 0x10B0u);
}
#endif
#if defined(RT_USING_SPIBUS2)
if(base == LPSPI2)
{
IOMUXC_SetPinMux (IOMUXC_GPIO_SD_B1_07_LPSPI2_SCK, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B1_07_LPSPI2_SCK, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_SD_B1_08_LPSPI2_SD0, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B1_08_LPSPI2_SD0, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_SD_B1_09_LPSPI2_SDI, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B1_09_LPSPI2_SDI, 0x10B0u);
/* Optional IO config */
//IOMUXC_SetPinMux (IOMUXC_GPIO_EMC_00_LPSPI2_SCK, 0U);
//IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_00_LPSPI2_SCK, 0x10B0u);
//IOMUXC_SetPinMux (IOMUXC_GPIO_EMC_02_LPSPI2_SDO, 0U);
//IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_02_LPSPI2_SDO, 0x10B0u);
//IOMUXC_SetPinMux (IOMUXC_GPIO_EMC_03_LPSPI2_SDI, 0U);
//IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_03_LPSPI2_SDI, 0x10B0u);
}
#endif
#if defined(RT_USING_SPIBUS3)
if(base == LPSPI3)
{
IOMUXC_SetPinMux (IOMUXC_GPIO_AD_B1_13_LPSPI3_SDI, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_13_LPSPI3_SDI, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_AD_B1_14_LPSPI3_SDO, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_14_LPSPI3_SDO, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_AD_B1_15_LPSPI3_SCK, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_15_LPSPI3_SCK, 0x10B0u);
}
#endif
#if defined(RT_USING_SPIBUS4)
if(base == LPSPI4)
{
IOMUXC_SetPinMux (IOMUXC_GPIO_B0_01_LPSPI4_SDI, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_01_LPSPI4_SDI, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_B0_02_LPSPI4_SDO, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_02_LPSPI4_SDO, 0x10B0u);
IOMUXC_SetPinMux (IOMUXC_GPIO_B0_03_LPSPI4_SCK, 0U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_03_LPSPI4_SCK, 0x10B0u);
/* Optional IO config */
//IOMUXC_SetPinMux (IOMUXC_GPIO_B1_07_LPSPI4_SCK, 0U);
//IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_07_LPSPI4_SCK, 0x10B0u);
//IOMUXC_SetPinMux (IOMUXC_GPIO_B1_06_LPSPI4_SDO, 0U);
//IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_06_LPSPI4_SDO, 0x10B0u);
//IOMUXC_SetPinMux (IOMUXC_GPIO_B1_05_LPSPI4_SDI, 0U);
//IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_05_LPSPI4_SDI, 0x10B0u);
}
#endif
LPSPI_MasterGetDefaultConfig(&masterConfig);
masterConfig.baudRate = cfg->max_hz;
masterConfig.bitsPerFrame = cfg->data_width;
if(cfg->mode & RT_SPI_MSB)
{
masterConfig.direction = kLPSPI_MsbFirst;
}
else
{
masterConfig.direction = kLPSPI_LsbFirst;
}
if(cfg->mode & RT_SPI_CPHA)
{
masterConfig.cpha = kLPSPI_ClockPhaseSecondEdge;
}
else
{
masterConfig.cpha = kLPSPI_ClockPhaseFirstEdge;
}
if(cfg->mode & RT_SPI_CPOL)
{
masterConfig.cpol = kLPSPI_ClockPolarityActiveLow;
}
else
{
masterConfig.cpol = kLPSPI_ClockPolarityActiveHigh;
}
masterConfig.pinCfg = kLPSPI_SdiInSdoOut;
masterConfig.dataOutConfig = kLpspiDataOutTristate;
masterConfig.pcsToSckDelayInNanoSec = 1000000000 / masterConfig.baudRate;
masterConfig.lastSckToPcsDelayInNanoSec = 1000000000 / masterConfig.baudRate;
masterConfig.betweenTransferDelayInNanoSec = 1000000000 / masterConfig.baudRate;
LPSPI_MasterInit(base, &masterConfig, rt1050_get_lpspi_freq());
base->CFGR1 |= LPSPI_CFGR1_PCSCFG_MASK;
return RT_EOK;
}
rt_err_t rt1050_spi_bus_attach_device(const char *bus_name, const char *device_name, rt_uint32_t pin)
{
rt_err_t ret;
struct rt_spi_device *spi_device = (struct rt_spi_device *)rt_malloc(sizeof(struct rt_spi_device));
RT_ASSERT(spi_device != RT_NULL);
struct rt1050_hw_spi_cs *cs_pin = (struct rt1050_hw_spi_cs *)rt_malloc(sizeof(struct rt1050_hw_spi_cs));
RT_ASSERT(cs_pin != RT_NULL);
cs_pin->pin = pin;
rt_pin_mode(pin, PIN_MODE_OUTPUT);
rt_pin_write(pin, PIN_HIGH);
ret = rt_spi_bus_attach_device(spi_device, device_name, bus_name, (void *)cs_pin);
return ret;
}
static rt_err_t spi_configure(struct rt_spi_device *device, struct rt_spi_configuration *cfg)
{
rt_err_t ret;
struct rt1050_spi *spi = RT_NULL;
RT_ASSERT(cfg != RT_NULL);
RT_ASSERT(device != RT_NULL);
spi = (struct rt1050_spi *)(device->bus->parent.user_data);
spi->cfg = cfg;
ret = rt1050_spi_init(spi->base, cfg);
return ret;
}
static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *message)
{
lpspi_transfer_t transfer;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->bus != RT_NULL);
RT_ASSERT(device->bus->parent.user_data != RT_NULL);
struct rt1050_spi *spi = (struct rt1050_spi *)(device->bus->parent.user_data);
struct rt1050_hw_spi_cs *cs = device->parent.user_data;
if(message->cs_take)
{
rt_pin_write(cs->pin, PIN_LOW);
}
transfer.rxData = (uint8_t *)(message->recv_buf);
transfer.txData = (uint8_t *)(message->send_buf);
transfer.dataSize = message->length;
status_t stat = LPSPI_MasterTransferBlocking(spi->base, &transfer);
if(message->cs_release)
{
rt_pin_write(cs->pin, PIN_HIGH);
}
return message->length;
}
#if defined(RT_USING_SPIBUS1)
static struct rt1050_spi spi1 =
{
.base = LPSPI1
};
static struct rt_spi_bus spi1_bus =
{
.parent.user_data = &spi1
};
#endif
#if defined(RT_USING_SPIBUS2)
static struct rt1050_spi spi2 =
{
.base = LPSPI2
};
static struct rt_spi_bus spi2_bus =
{
.parent.user_data = &spi2
};
#endif
#if defined(RT_USING_SPIBUS3)
static struct rt1050_spi spi3 =
{
.base = LPSPI3
};
static struct rt_spi_bus spi3_bus =
{
.parent.user_data = &spi3
};
#endif
#if defined(RT_USING_SPIBUS4)
static struct rt1050_spi spi4 =
{
.base = LPSPI4
};
static struct rt_spi_bus spi4_bus =
{
.parent.user_data = &spi4
};
#endif
static struct rt_spi_ops rt1050_spi_ops =
{
.configure = spi_configure,
.xfer = spixfer
};
int rt_hw_spi_bus_init(void)
{
#if defined(RT_USING_SPIBUS1) || defined(RT_USING_SPIBUS2) || \
defined(RT_USING_SPIBUS3) || defined(RT_USING_SPIBUS4)
CLOCK_SetMux(kCLOCK_LpspiMux, LPSPI_CLK_SOURCE);
CLOCK_SetDiv(kCLOCK_LpspiDiv, LPSPI_CLK_SOURCE_DIVIDER);
CLOCK_EnableClock(kCLOCK_Iomuxc);
#endif
#if defined(RT_USING_SPIBUS1)
rt_spi_bus_register(&spi1_bus, "spibus1", &rt1050_spi_ops);
#endif
#if defined(RT_USING_SPIBUS2)
rt_spi_bus_register(&spi2_bus, "spibus2", &rt1050_spi_ops);
#endif
#if defined(RT_USING_SPIBUS3)
rt_spi_bus_register(&spi3_bus, "spibus3", &rt1050_spi_ops);
#endif
#if defined(RT_USING_SPIBUS4)
rt_spi_bus_register(&spi4_bus, "spibus4", &rt1050_spi_ops);
#endif
return RT_EOK;
}
INIT_BOARD_EXPORT(rt_hw_spi_bus_init);
#endif

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@ -0,0 +1,24 @@
/*
* File : drv_spi_bus.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006-2013, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2018-03-27 Liuguang the first version.
*/
#ifndef __DRV_SPI_BUS_H__
#define __DRV_SPI_BUS_H__
#include <rtthread.h>
#include <rtdevice.h>
int rt_hw_spi_bus_init(void);
rt_err_t rt1050_spi_bus_attach_device(const char *bus_name, const char *device_name, rt_uint32_t pin);
#endif