mirror of
https://github.com/apache/nuttx.git
synced 2026-05-23 23:28:29 +08:00
arch: cxd56xx: Add host interface driver
Add host interface driver which supports I2C or SPI slave feature.
This commit is contained in:
SPRESENSE
Alin Jerpelea
@@ -0,0 +1,136 @@
|
||||
/****************************************************************************
|
||||
* arch/arm/include/cxd56xx/hostif.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_ARM_INCLUDE_CXD56XX_HOSTIF_H
|
||||
#define __ARCH_ARM_INCLUDE_CXD56XX_HOSTIF_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <stdint.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/* Host interface maximum number of buffers */
|
||||
|
||||
#define MAX_BUFFER_NUM 32
|
||||
|
||||
/* Host interface buffer attributes */
|
||||
|
||||
#define HOSTIF_BUFF_ATTR_ADDR_OFFSET(n) (((n) & 0x3) << 4)
|
||||
/* 2 to the power of n */
|
||||
#define HOSTIF_BUFF_ATTR_FIXLEN (0 << 2) /* fixed length */
|
||||
#define HOSTIF_BUFF_ATTR_VARLEN (1 << 2) /* variable length */
|
||||
#define HOSTIF_BUFF_ATTR_WRITE (0 << 1) /* from target to host */
|
||||
#define HOSTIF_BUFF_ATTR_READ (1 << 1) /* from host to target */
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
/* Common buffer configuration */
|
||||
|
||||
struct hostif_buff_s
|
||||
{
|
||||
uint16_t size;
|
||||
uint16_t flag;
|
||||
};
|
||||
|
||||
/* I2C buffer configuration */
|
||||
|
||||
struct hostif_i2cconf_s
|
||||
{
|
||||
int address; /* slave address */
|
||||
struct hostif_buff_s buff[MAX_BUFFER_NUM];
|
||||
};
|
||||
|
||||
/* SPI buffer configuration */
|
||||
|
||||
struct hostif_spiconf_s
|
||||
{
|
||||
struct hostif_buff_s buff[MAX_BUFFER_NUM];
|
||||
};
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: hostif_i2cinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the host interface for I2C slave
|
||||
*
|
||||
* Input Parameter:
|
||||
* config - pointer to I2C buffer configuration
|
||||
*
|
||||
* Returned Value:
|
||||
* Return 0 on success. Otherwise, return a negated errno.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int hostif_i2cinitialize(FAR struct hostif_i2cconf_s *config);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: hostif_spiinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the host interface for SPI slave
|
||||
*
|
||||
* Input Parameter:
|
||||
* config - pointer to SPI buffer configuration
|
||||
*
|
||||
* Returned Value:
|
||||
* Return 0 on success. Otherwise, return a negated errno.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int hostif_spiinitialize(FAR struct hostif_spiconf_s *config);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: hostif_uninitialize
|
||||
*
|
||||
* Description:
|
||||
* Uninitialize the host interface
|
||||
*
|
||||
* Returned Value:
|
||||
* Return 0 on success. Otherwise, return a negated errno.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int hostif_uninitialize(void);
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* __ARCH_ARM_INCLUDE_CXD56XX_HOSTIF_H */
|
||||
@@ -1093,6 +1093,45 @@ config CXD56_CISIF
|
||||
default n
|
||||
---help---
|
||||
CMOS image sensor interface for cx5602 chip
|
||||
|
||||
config CXD56_HOSTIF
|
||||
bool "Host interface"
|
||||
default n
|
||||
---help---
|
||||
Host interface supports I2C or SPI slave feature.
|
||||
|
||||
config CXD56_HOSTIF_DEBUG
|
||||
bool "Host interface Debug Features"
|
||||
default n
|
||||
depends on CXD56_HOSTIF
|
||||
---help---
|
||||
Enable host interface device debug features.
|
||||
|
||||
if CXD56_HOSTIF_DEBUG
|
||||
|
||||
config CXD56_HOSTIF_DEBUG_ERROR
|
||||
bool "Host interface Error Output"
|
||||
default n
|
||||
depends on DEBUG_ERROR
|
||||
---help---
|
||||
Enable host interface error output to SYSLOG.
|
||||
|
||||
config CXD56_HOSTIF_DEBUG_WARN
|
||||
bool "Host interface Warnings Output"
|
||||
default n
|
||||
depends on DEBUG_WARN
|
||||
---help---
|
||||
Enable host interface warning output to SYSLOG.
|
||||
|
||||
config CXD56_HOSTIF_DEBUG_INFO
|
||||
bool "Host interface Informational Output"
|
||||
default n
|
||||
depends on DEBUG_INFO
|
||||
---help---
|
||||
Enable host interface informational output to SYSLOG.
|
||||
|
||||
endif # CXD56_HOSTIF_DEBUG
|
||||
|
||||
endmenu
|
||||
|
||||
comment "Storage Options"
|
||||
|
||||
@@ -201,3 +201,7 @@ endif
|
||||
ifeq ($(CONFIG_CXD56_BACKUPLOG),y)
|
||||
CHIP_CSRCS += cxd56_backuplog.c
|
||||
endif
|
||||
|
||||
ifeq ($(CONFIG_CXD56_HOSTIF),y)
|
||||
CHIP_CSRCS += cxd56_hostif.c
|
||||
endif
|
||||
|
||||
@@ -2291,6 +2291,182 @@ uint32_t cxd56_get_img_vsync_baseclock(void)
|
||||
}
|
||||
}
|
||||
|
||||
static int cxd56_hostif_clock_ctrl(uint32_t block, uint32_t intr, int on)
|
||||
{
|
||||
uint32_t val;
|
||||
uint32_t stat;
|
||||
int retry = 10000;
|
||||
|
||||
putreg32(0xffffffff, CXD56_TOPREG_CRG_INT_CLR0);
|
||||
|
||||
val = getreg32(CXD56_TOPREG_SYSIOP_CKEN);
|
||||
if (on)
|
||||
{
|
||||
if ((val & block) == block)
|
||||
{
|
||||
/* Already clock on */
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
putreg32(val | block, CXD56_TOPREG_SYSIOP_CKEN);
|
||||
}
|
||||
else
|
||||
{
|
||||
if ((val & block) == 0)
|
||||
{
|
||||
/* Already clock off */
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
putreg32(val & ~block, CXD56_TOPREG_SYSIOP_CKEN);
|
||||
}
|
||||
|
||||
do
|
||||
{
|
||||
stat = getreg32(CXD56_TOPREG_CRG_INT_STAT_RAW0);
|
||||
busy_wait(1000);
|
||||
}
|
||||
while (retry-- && !(stat & intr));
|
||||
|
||||
putreg32(0xffffffff, CXD56_TOPREG_CRG_INT_CLR0);
|
||||
|
||||
return (retry) ? OK : -ETIMEDOUT;
|
||||
}
|
||||
|
||||
int cxd56_hostif_clock_enable(void)
|
||||
{
|
||||
int ret = OK;
|
||||
uint32_t mask;
|
||||
uint32_t intr;
|
||||
|
||||
/* Enable HOSTIF IRAM/DRAM & general RAM memory power. */
|
||||
|
||||
putreg32((0x3 << 24) | 0xf, CXD56_TOPREG_HOSTIFC_RAMMODE_SEL);
|
||||
|
||||
do_power_control();
|
||||
|
||||
mask = CKEN_HOSSPI | CKEN_HOSI2C | CKEN_HOSTIFC_SEQ | CKEN_BRG_HOST |
|
||||
CKEN_I2CS | CKEN_PCLK_HOSTIFC | CKEN_PCLK_UART0 | CKEN_UART0;
|
||||
|
||||
if (getreg32(CXD56_TOPREG_SYSIOP_CKEN) & mask)
|
||||
{
|
||||
/* Already enabled */
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
putreg32(0, CXD56_TOPREG_CKDIV_HOSTIFC);
|
||||
putreg32(0, CXD56_TOPREG_CKSEL_SYSIOP);
|
||||
|
||||
mask = CKEN_HOSSPI | CKEN_HOSI2C | CKEN_BRG_HOST |
|
||||
CKEN_I2CS | CKEN_PCLK_HOSTIFC;
|
||||
|
||||
intr = CRG_CK_BRG_HOST | CRG_CK_I2CS | CRG_CK_PCLK_HOSTIFC;
|
||||
|
||||
ret = cxd56_hostif_clock_ctrl(mask, intr, 1);
|
||||
if (ret < 0)
|
||||
{
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = cxd56_hostif_clock_ctrl(mask, intr, 0);
|
||||
if (ret < 0)
|
||||
{
|
||||
return ret;
|
||||
}
|
||||
|
||||
modifyreg32(CXD56_TOPREG_SWRESET_BUS, 0, XRST_HOSTIFC);
|
||||
ret = cxd56_hostif_clock_ctrl(mask, intr, 1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cxd56_hostif_clock_disable(void)
|
||||
{
|
||||
int ret = OK;
|
||||
uint32_t mask;
|
||||
uint32_t intr;
|
||||
|
||||
mask = CKEN_HOSSPI | CKEN_HOSI2C | CKEN_HOSTIFC_SEQ | CKEN_BRG_HOST |
|
||||
CKEN_I2CS | CKEN_PCLK_HOSTIFC | CKEN_PCLK_UART0 | CKEN_UART0;
|
||||
|
||||
if (0 == (getreg32(CXD56_TOPREG_SYSIOP_CKEN) & mask))
|
||||
{
|
||||
/* Already disabled */
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
mask = CKEN_HOSSPI | CKEN_HOSI2C | CKEN_BRG_HOST |
|
||||
CKEN_I2CS | CKEN_PCLK_HOSTIFC;
|
||||
|
||||
intr = CRG_CK_BRG_HOST | CRG_CK_I2CS | CRG_CK_PCLK_HOSTIFC;
|
||||
|
||||
ret = cxd56_hostif_clock_ctrl(mask, intr, 0);
|
||||
if (ret < 0)
|
||||
{
|
||||
return ret;
|
||||
}
|
||||
|
||||
modifyreg32(CXD56_TOPREG_SWRESET_BUS, XRST_HOSTIFC, 0);
|
||||
|
||||
/* Disable HOSTIF IRAM/DRAM & general RAM memory power. */
|
||||
|
||||
putreg32(0x3, CXD56_TOPREG_HOSTIFC_RAMMODE_SEL);
|
||||
|
||||
do_power_control();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cxd56_hostseq_clock_enable(void)
|
||||
{
|
||||
int ret = OK;
|
||||
|
||||
if (getreg32(CXD56_TOPREG_SYSIOP_CKEN) & CKEN_HOSTIFC_SEQ)
|
||||
{
|
||||
/* Already enabled */
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = cxd56_hostif_clock_ctrl(CKEN_HOSTIFC_SEQ, CRG_CK_HOSTIFC_SEQ, 1);
|
||||
if (ret < 0)
|
||||
{
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = cxd56_hostif_clock_ctrl(CKEN_HOSTIFC_SEQ, CRG_CK_HOSTIFC_SEQ, 0);
|
||||
if (ret < 0)
|
||||
{
|
||||
return ret;
|
||||
}
|
||||
|
||||
modifyreg32(CXD56_TOPREG_SWRESET_BUS, 0, XRST_HOSTIFC_ISOP);
|
||||
ret = cxd56_hostif_clock_ctrl(CKEN_HOSTIFC_SEQ, CRG_CK_HOSTIFC_SEQ, 1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cxd56_hostseq_clock_disable(void)
|
||||
{
|
||||
int ret = OK;
|
||||
|
||||
if (0 == (getreg32(CXD56_TOPREG_SYSIOP_CKEN) & CKEN_HOSTIFC_SEQ))
|
||||
{
|
||||
/* Already disabled */
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
modifyreg32(CXD56_TOPREG_SWRESET_BUS, XRST_HOSTIFC_ISOP, 0);
|
||||
ret = cxd56_hostif_clock_ctrl(CKEN_HOSTIFC_SEQ, CRG_CK_HOSTIFC_SEQ, 0);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int up_pmramctrl(int cmd, uintptr_t addr, size_t size)
|
||||
{
|
||||
int startidx;
|
||||
|
||||
@@ -684,6 +684,46 @@ uint32_t cxd56_get_img_vsync_baseclock(void);
|
||||
|
||||
uint32_t cxd56_get_appsmp_baseclock(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cxd56_hostif_clock_enable
|
||||
*
|
||||
* Description:
|
||||
* Enable clock of the hostif block
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int cxd56_hostif_clock_enable(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cxd56_hostif_clock_disable
|
||||
*
|
||||
* Description:
|
||||
* Disable clock of the hostif block
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int cxd56_hostif_clock_disable(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cxd56_hostseq_clock_enable
|
||||
*
|
||||
* Description:
|
||||
* Enable clock of the hostif sequencer block
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int cxd56_hostseq_clock_enable(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cxd56_hostseq_clock_disable
|
||||
*
|
||||
* Description:
|
||||
* Disable clock of the hostif sequencer block
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int cxd56_hostseq_clock_disable(void);
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -32,6 +32,7 @@
|
||||
#define CXD56_PROTO_HOTSLEEP 8
|
||||
#define CXD56_PROTO_IMAGE 9
|
||||
#define CXD56_PROTO_PM 10 /* Power manager */
|
||||
#define CXD56_PROTO_HOSTIF 11
|
||||
#define CXD56_PROTO_SYSCTL 12
|
||||
#define CXD56_PROTO_GNSS 13
|
||||
#define CXD56_PROTO_SIG 15 /* Inter-CPU Comm signal */
|
||||
|
||||
Reference in New Issue
Block a user