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sama5/twi: add support for flexcom twi

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This commit is contained in:
Janne Rosberg 2023-02-08 16:40:34 +02:00 committed by Xiang Xiao
parent 725dfd5db9
commit 739688f6c6
4 changed files with 234 additions and 5 deletions
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55
arch/arm/src/sama5/Kconfig
View File

@ -203,6 +203,26 @@ config SAMA5_FLEXCOM_TWI
bool
default n
config SAMA5_FLEXCOM_TWI0
bool
default n
config SAMA5_FLEXCOM_TWI1
bool
default n
config SAMA5_FLEXCOM_TWI2
bool
default n
config SAMA5_FLEXCOM_TWI3
bool
default n
config SAMA5_FLEXCOM_TWI4
bool
default n
# Chip Selection
config ARCH_CHIP_SAMA5D2
@ -864,6 +884,7 @@ config SAMA5_FLEXCOM0_SPI
config SAMA5_FLEXCOM0_TWI
bool "TWI"
select SAMA5_FLEXCOM_TWI
select SAMA5_FLEXCOM_TWI0
endchoice # FLEXCOM0 Configuration
@ -885,6 +906,7 @@ config SAMA5_FLEXCOM1_SPI
config SAMA5_FLEXCOM1_TWI
bool "TWI"
select SAMA5_FLEXCOM_TWI
select SAMA5_FLEXCOM_TWI1
endchoice # FLEXCOM1 Configuration
@ -906,6 +928,7 @@ config SAMA5_FLEXCOM2_SPI
config SAMA5_FLEXCOM2_TWI
bool "TWI"
select SAMA5_FLEXCOM_TWI
select SAMA5_FLEXCOM_TWI2
endchoice # FLEXCOM2 Configuration
@ -927,6 +950,7 @@ config SAMA5_FLEXCOM3_SPI
config SAMA5_FLEXCOM3_TWI
bool "TWI"
select SAMA5_FLEXCOM_TWI
select SAMA5_FLEXCOM_TWI3
endchoice # FLEXCOM3 Configuration
@ -948,6 +972,7 @@ config SAMA5_FLEXCOM4_SPI
config SAMA5_FLEXCOM4_TWI
bool "TWI"
select SAMA5_FLEXCOM_TWI
select SAMA5_FLEXCOM_TWI4
endchoice # FLEXCOM4 Configuration
endmenu # Flexcom Configuration
@ -3172,7 +3197,7 @@ config SAMA5_FLEXCOM_SPI_DMADEBUG
endmenu # Flexcom SPI device driver options
endif # SAMA5_FLEXCOM0_SPI || SAMA5_FLEXCOM1_SPI || SAMA5_FLEXCOM2_SPI || SAMA5_FLEXCOM3_SPI || SAMA5_FLEXCOM4_SPI
if SAMA5_TWI0 || SAMA5_TWI1 || SAMA5_TWI2 || SAMA5_TWI3
if SAMA5_TWI0 || SAMA5_TWI1 || SAMA5_TWI2 || SAMA5_TWI3 || SAMA5_FLEXCOM_TWI
menu "TWI device driver options"
@ -3196,6 +3221,32 @@ config SAMA5_TWI3_FREQUENCY
default 100000
depends on SAMA5_TWI3
config SAMA5_TWI_FC0_FREQUENCY
int "TWI4 (flexcom-0) Frequency"
default 100000
depends on SAMA5_FLEXCOM_TWI0
config SAMA5_TWI_FC1_FREQUENCY
int "TWI5 (flexcom-1) Frequency"
default 100000
depends on SAMA5_FLEXCOM_TWI1
config SAMA5_TWI_FC2_FREQUENCY
int "TWI6 (flexcom-2) Frequency"
default 100000
depends on SAMA5_FLEXCOM_TWI2
config SAMA5_TWI_FC3_FREQUENCY
int "TWI7 (flexcom-3) Frequency"
default 100000
depends on SAMA5_FLEXCOM_TWI3
config SAMA5_TWI_FC4_FREQUENCY
int "TWI8 (flexcom-4) Frequency"
default 100000
depends on SAMA5_FLEXCOM_TWI4
config SAMA5_TWI_REGDEBUG
bool "TWI register level debug"
depends on DEBUG_I2C_INFO
@ -3205,7 +3256,7 @@ config SAMA5_TWI_REGDEBUG
Very invasive! Requires also CONFIG_DEBUG_I2C_INFO.
endmenu # TWI device driver options
endif # SAMA5_TWI0 || SAMA5_TWI1 || SAMA5_TWI2 || SAMA5_TWI3
endif # SAMA5_TWI0 || SAMA5_TWI1 || SAMA5_TWI2 || SAMA5_TWI3 | SAMA5_FLEXCOM_TWI
if SAMA5_SSC0 || SAMA5_SSC1
menu "SSC Configuration"

3
arch/arm/src/sama5/Make.defs
View File

@ -187,6 +187,9 @@ else
ifeq ($(CONFIG_SAMA5_TWI2),y)
CHIP_CSRCS += sam_twi.c
endif
ifeq ($(CONFIG_SAMA5_FLEXCOM_TWI),y)
CHIP_CSRCS += sam_twi.c
endif
endif
endif

4
arch/arm/src/sama5/hardware/_sama5d2x_memorymap.h
View File

@ -522,6 +522,10 @@
#define SAM_PIOC_VBASE SAM_PIO_IOGROUPC_VBASE
#define SAM_PIOD_VBASE SAM_PIO_IOGROUPD_VBASE
#define SAM_FLEXCOM_USART_OFFSET (0x200)
#define SAM_FLEXCOM_SPI_OFFSET (0x400)
#define SAM_FLEXCOM_TWI_OFFSET (0x600)
/* NuttX virtual base address
*
* The boot logic will create a temporarily mapping based on where NuttX is

177
arch/arm/src/sama5/sam_twi.c
View File

@ -74,9 +74,15 @@
#include "sam_periphclks.h"
#include "sam_pio.h"
#include "sam_twi.h"
#include "hardware/sam_flexcom.h"
#if defined(CONFIG_SAMA5_TWI0) || defined(CONFIG_SAMA5_TWI1) || \
defined(CONFIG_SAMA5_TWI2) || defined(CONFIG_SAMA5_TWI3)
defined(CONFIG_SAMA5_TWI2) || defined(CONFIG_SAMA5_TWI3) || \
defined(CONFIG_SAMA5_FLEXCOM0_TWI) || \
defined(CONFIG_SAMA5_FLEXCOM1_TWI) || \
defined(CONFIG_SAMA5_FLEXCOM2_TWI) || \
defined(CONFIG_SAMA5_FLEXCOM3_TWI) || \
defined(CONFIG_SAMA5_FLEXCOM4_TWI)
/****************************************************************************
* Pre-processor Definitions
@ -329,6 +335,117 @@ static struct twi_dev_s g_twi3 =
};
#endif
#ifdef CONFIG_SAMA5_FLEXCOM0_TWI
static const struct twi_attr_s g_twi4attr =
{
.twi = 4,
.pid = SAM_PID_FLEXCOM0,
.irq = SAM_IRQ_FLEXCOM0,
.sclcfg = PIO_TWI4_CK,
.sdacfg = PIO_TWI4_D,
.base = SAM_FLEXCOM0_VBASE + SAM_FLEXCOM_TWI_OFFSET
};
static struct twi_dev_s g_twi4 =
{
.dev =
{
.ops = &g_twiops,
},
.attr = &g_twi4attr,
.lock = NXMUTEX_INITIALIZER,
.waitsem = SEM_INITIALIZER(0),
};
#endif
#ifdef CONFIG_SAMA5_FLEXCOM1_TWI
static const struct twi_attr_s g_twi5attr =
{
.twi = 5,
.pid = SAM_PID_FLEXCOM1,
.irq = SAM_IRQ_FLEXCOM1,
.sclcfg = PIO_TWI5_CK,
.sdacfg = PIO_TWI5_D,
.base = SAM_FLEXCOM1_VBASE + SAM_FLEXCOM_TWI_OFFSET
};
static struct twi_dev_s g_twi4 =
{
.dev =
{
.ops = &g_twiops,
},
.attr = &g_twi5attr,
.lock = NXMUTEX_INITIALIZER,
.waitsem = SEM_INITIALIZER(0),
};
#endif
#ifdef CONFIG_SAMA5_FLEXCOM2_TWI
static const struct twi_attr_s g_twi6attr =
{
.twi = 6,
.pid = SAM_PID_FLEXCOM2,
.irq = SAM_IRQ_FLEXCOM2,
.sclcfg = PIO_TWI6_CK,
.sdacfg = PIO_TWI6_D,
.base = SAM_FLEXCOM2_VBASE + SAM_FLEXCOM_TWI_OFFSET
};
static struct twi_dev_s g_twi6 =
{
.dev =
{
.ops = &g_twiops,
},
.attr = &g_twi6attr,
.lock = NXMUTEX_INITIALIZER,
.waitsem = SEM_INITIALIZER(0),
};
#endif
#ifdef CONFIG_SAMA5_FLEXCOM3_TWI
static const struct twi_attr_s g_twi7attr =
{
.twi = 7,
.pid = SAM_PID_FLEXCOM3,
.irq = SAM_IRQ_FLEXCOM3,
.sclcfg = PIO_TWI7_CK,
.sdacfg = PIO_TWI7_D,
.base = SAM_FLEXCOM3_VBASE + SAM_FLEXCOM_TWI_OFFSET
};
static struct twi_dev_s g_twi7 =
{
.dev =
{
.ops = &g_twiops,
},
.attr = &g_twi7attr,
.lock = NXMUTEX_INITIALIZER,
.waitsem = SEM_INITIALIZER(0),
};
#endif
#ifdef CONFIG_SAMA5_FLEXCOM4_TWI
static const struct twi_attr_s g_twi8attr =
{
.twi = 8,
.pid = SAM_PID_FLEXCOM3,
.irq = SAM_IRQ_FLEXCOM3,
.sclcfg = PIO_TWI8_CK,
.sdacfg = PIO_TWI8_D,
.base = SAM_FLEXCOM4_VBASE + SAM_FLEXCOM_TWI_OFFSET
};
static struct twi_dev_s g_twi8 =
{
.dev =
{
.ops = &g_twiops,
},
.attr = &g_twi8attr,
.lock = NXMUTEX_INITIALIZER,
.waitsem = SEM_INITIALIZER(0),
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
@ -348,10 +465,9 @@ static struct twi_dev_s g_twi3 =
* false: This is the same as the preceding register access.
*
****************************************************************************/
#ifdef CONFIG_SAMA5_TWI_REGDEBUG
static bool twi_checkreg(struct twi_dev_s *priv, bool wr, uint32_t value,
uint32_t address)
uintptr_t address)
{
if (wr == priv->wrlast && /* Same kind of access? */
value == priv->vallast && /* Same value? */
@ -1249,6 +1365,61 @@ struct i2c_master_s *sam_i2cbus_initialize(int bus)
frequency = CONFIG_SAMA5_TWI3_FREQUENCY;
}
else
#endif
#ifdef CONFIG_SAMA5_FLEXCOM0_TWI
if (bus == 4)
{
/* Select up TWI4 (Flexcom-0) and the (initial) TWI frequency */
putreg32(FLEX_MR_OPMODE_TWI, SAM_FLEX0_MR);
priv = &g_twi4;
frequency = CONFIG_SAMA5_TWI_FC0_FREQUENCY;
}
else
#endif
#ifdef CONFIG_SAMA5_FLEXCOM1_TWI
if (bus == 5)
{
/* Select up TWI5 (Flexcom-1) and the (initial) TWI frequency */
putreg32(FLEX_MR_OPMODE_TWI, SAM_FLEX1_MR);
priv = &g_twi5;
frequency = CONFIG_SAMA5_TWI_FC1_FREQUENCY;
}
else
#endif
#ifdef CONFIG_SAMA5_FLEXCOM2_TWI
if (bus == 6)
{
/* Select up TWI6 (Flexcom-2) and the (initial) TWI frequency */
putreg32(FLEX_MR_OPMODE_TWI, SAM_FLEX2_MR);
priv = &g_twi6;
frequency = CONFIG_SAMA5_TWI_FC2_FREQUENCY;
}
else
#endif
#ifdef CONFIG_SAMA5_FLEXCOM3_TWI
if (bus == 7)
{
/* Select up TWI7 (Flexcom-3) and the (initial) TWI frequency */
putreg32(FLEX_MR_OPMODE_TWI, SAM_FLEX3_MR);
priv = &g_twi7;
frequency = CONFIG_SAMA5_TWI_FC3_FREQUENCY;
}
else
#endif
#ifdef CONFIG_SAMA5_FLEXCOM4_TWI
if (bus == 8)
{
/* Select up TWI8 (Flexcom-4) and the (initial) TWI frequency */
putreg32(FLEX_MR_OPMODE_TWI, SAM_FLEX4_MR);
priv = &g_twi8;
frequency = CONFIG_SAMA5_TWI_FC4_FREQUENCY;
}
else
#endif
{
i2cerr("ERROR: Unsupported bus: TWI%d\n", bus);