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mpfs: add i2c driver

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This adds mpfs i2c driver.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
This commit is contained in:
Eero Nurkkala
2021-05-12 12:13:14 +03:00
committed by Xiang Xiao
parent 361703a881
commit 1bce864ef7
10 changed files with 1094 additions and 1 deletions
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Documentation/platforms/risc-v/mpfs/index.rst
+1 -1
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@@ -58,7 +58,7 @@ Peripheral Support NOTES
GPIO Yes
MMUART Yes Uart mode only
SPI Yes
I2C No
I2C Yes
Timers No
Watchdog No
RTC No
arch/risc-v/src/mpfs/Kconfig
+8
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@@ -93,6 +93,14 @@ config MPFS_UART4
select ARCH_HAVE_SERIAL_TERMIOS
select MPFS_HAVE_UART4
config MPFS_I2C0
bool "I2C 0"
default n
config MPFS_I2C1
bool "I2C 1"
default n
endmenu
menu "MPFS Others"
arch/risc-v/src/mpfs/Make.defs
+4
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@@ -65,3 +65,7 @@ endif
ifeq ($(CONFIG_SPI),y)
CHIP_CSRCS += mpfs_spi.c
endif
ifeq ($(CONFIG_I2C),y)
CHIP_CSRCS += mpfs_i2c.c
endif
arch/risc-v/src/mpfs/hardware/mpfs_i2c.h
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@@ -0,0 +1,60 @@
/****************************************************************************
* arch/risc-v/src/mpfs/hardware/mpfs_i2c.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_RISCV_SRC_MPFS_HARDWARE_MPFS_I2C_H
#define __ARCH_RISCV_SRC_MPFS_HARDWARE_MPFS_I2C_H
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define MPFS_I2C_CTRL_CR2 7
#define MPFS_I2C_CTRL_ENS1 6
#define MPFS_I2C_CTRL_STA 5
#define MPFS_I2C_CTRL_STO 4
#define MPFS_I2C_CTRL_SI 3
#define MPFS_I2C_CTRL_AA 2
#define MPFS_I2C_CTRL_CR1 1
#define MPFS_I2C_CTRL_CR0 0
#define MPFS_I2C_CTRL_CR2_MASK (1 << 7)
#define MPFS_I2C_CTRL_ENS1_MASK (1 << 6)
#define MPFS_I2C_CTRL_STA_MASK (1 << 5)
#define MPFS_I2C_CTRL_STO_MASK (1 << 4)
#define MPFS_I2C_CTRL_SI_MASK (1 << 3)
#define MPFS_I2C_CTRL_AA_MASK (1 << 2)
#define MPFS_I2C_CTRL_CR1_MASK (1 << 1)
#define MPFS_I2C_CTRL_CR0_MASK (1 << 0)
#define MPFS_I2C_ST_RESET_ACTIVATED 0xD0 /* Master reset is activated */
#define MPFS_I2C_ST_RX_DATA_NACK 0x58 /* Data received, NACK sent */
#define MPFS_I2C_ST_RX_DATA_ACK 0x50 /* Data received, ACK sent */
#define MPFS_I2C_ST_SLAR_NACK 0x48 /* SLA+R sent, NACK'ed */
#define MPFS_I2C_ST_SLAR_ACK 0x40 /* SLA+R sent, ACK'ed */
#define MPFS_I2C_ST_LOST_ARB 0x38 /* Master lost arbitration */
#define MPFS_I2C_ST_TX_DATA_NACK 0x30 /* Data sent, NACK'ed */
#define MPFS_I2C_ST_TX_DATA_ACK 0x28 /* Data sent, ACK'ed */
#define MPFS_I2C_ST_SLAW_NACK 0x20 /* SLA + W sent, nack received */
#define MPFS_I2C_ST_SLAW_ACK 0x18 /* SLA + W sent, ack received */
#define MPFS_I2C_ST_RESTART 0x10 /* Repeated start */
#define MPFS_I2C_ST_START 0x08 /* Start condition sent */
#define MPFS_I2C_ST_BUS_ERROR 0x00 /* Bus error */
#endif /* __ARCH_RISCV_SRC_MPFS_HARDWARE_MPFS_I2C_H */
arch/risc-v/src/mpfs/mpfs_i2c.c
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arch/risc-v/src/mpfs/mpfs_i2c.h
Executable
+93
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@@ -0,0 +1,93 @@
/****************************************************************************
* arch/risc-v/src/mpfs/mpfs_i2c.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#ifndef __ARCH_RISCV_SRC_MPFS_I2C_H
#define __ARCH_RISCV_SRC_MPFS_I2C_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/i2c/i2c_master.h>
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: mpfs_i2cbus_initialize
*
* Description:
* Initialize the selected I2C port. And return a pointer to an unique
* instance of struct i2c_master_s. This function may be called to obtain
* multiple instances of the interface.
*
* Input Parameters:
* port - Port number of the I2C interface to be initialized.
*
* Returned Value:
* Pointer to valid I2C device structure is returned on success.
* A NULL pointer is returned on failure.
*
****************************************************************************/
struct i2c_master_s *mpfs_i2cbus_initialize(int port);
/****************************************************************************
* Name: mpfs_i2cbus_uninitialize
*
* Description:
* De-initialize the selected I2C port and power down the device.
*
* Input Parameters:
* dev - Device structure as returned by
* mpfs_i2cbus_initialize()
*
* Returned Value:
* OK is returned on success. ERROR is returned when internal reference
* count mismatches or dev points to invalid hardware device.
*
****************************************************************************/
int mpfs_i2cbus_uninitialize(struct i2c_master_s *dev);
#ifdef __cplusplus
}
#endif
#undef EXTERN
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_RISCV_SRC_MPFS_I2C_H */
boards/risc-v/mpfs/icicle/src/Makefile
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@@ -26,6 +26,10 @@ ifeq ($(CONFIG_LIB_BOARDCTL),y)
CSRCS += mpfs_appinit.c
endif
ifeq ($(CONFIG_I2C),y)
CSRCS += mpfs_i2c.c
endif
ifeq ($(CONFIG_ARCH_LEDS),y)
CSRCS += mpfs_autoleds.c
endif
boards/risc-v/mpfs/icicle/src/mpfs_bringup.c
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@@ -48,6 +48,17 @@ int mpfs_bringup(void)
{
int ret = OK;
#if defined(CONFIG_I2C_DRIVER)
/* Configure I2C peripheral interfaces */
ret = mpfs_board_i2c_init();
if (ret < 0)
{
syslog(LOG_ERR, "Failed to initialize I2C driver: %d\n", ret);
}
#endif
#ifdef CONFIG_FS_PROCFS
/* Mount the procfs file system */
boards/risc-v/mpfs/icicle/src/mpfs_i2c.c
+102
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@@ -0,0 +1,102 @@
/****************************************************************************
* boards/risc-v/mpfs/icicle/src/mpfs_i2c.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <errno.h>
#include <sys/types.h>
#include <nuttx/i2c/i2c_master.h>
#include "mpfs_i2c.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_i2c_init
*
* Description:
* Configure the I2C driver.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int mpfs_board_i2c_init(void)
{
int ret = OK;
#if defined(CONFIG_MPFS_I2C0) || defined(CONFIG_MPFS_I2C1)
#ifdef CONFIG_I2C_DRIVER
int bus = 0;
#endif
FAR struct i2c_master_s *i2c;
#endif
#ifdef CONFIG_MPFS_I2C0
i2c = mpfs_i2cbus_initialize(0);
if (i2c == NULL)
{
i2cerr("ERROR: Failed to init I2C0 interface\n");
return -ENODEV;
}
#ifdef CONFIG_I2C_DRIVER
ret = i2c_register(i2c, bus++);
if (ret < 0)
{
i2cerr("ERROR: Failed to register I2C0 driver: %d\n", ret);
mpfs_i2cbus_uninitialize(i2c);
return ret;
}
#endif
#endif
#ifdef CONFIG_MPFS_I2C1
i2c = mpfs_i2cbus_initialize(1);
if (i2c == NULL)
{
i2cerr("ERROR: Failed to init I2C1 interface\n");
return -ENODEV;
}
#ifdef CONFIG_I2C_DRIVER
ret = i2c_register(i2c, bus);
if (ret < 0)
{
i2cerr("ERROR: Failed to register I2C1 driver: %d\n", ret);
mpfs_i2cbus_uninitialize(i2c);
return ret;
}
#endif
#endif
return ret;
}
boards/risc-v/mpfs/icicle/src/mpfsicicle.h
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@@ -43,5 +43,6 @@
int mpfs_bringup(void);
int mpfs_board_spi_init(void);
int mpfs_board_i2c_init(void);
#endif /* __BOARDS_RISCV_ICICLE_MPFS_SRC_MPFSICICLE_H */