mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 00:14:22 +08:00
arm64/imx9: Add LPI2C driver
This commit is contained in:
Ville Juven
Xiang Xiao
@@ -94,6 +94,7 @@ config ARCH_CHIP_IMX8
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config ARCH_CHIP_IMX9
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bool "NXP i.MX9 Platform (ARMv8.2a)"
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select ARCH_HAVE_ADDRENV
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select ARCH_HAVE_I2CRESET
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select ARCH_HAVE_IRQTRIGGER
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select ARCH_NEED_ADDRENV_MAPPING
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---help---
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@@ -218,8 +218,257 @@ config IMX9_GPIO_IRQ
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bool "GPIO Interrupt Support"
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default n
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config IMX9_LPI2C
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bool "LPI2C support"
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default n
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config IMX9_PLL
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bool "PLL setup support (WIP)"
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default n
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menu "LPI2C Peripherals"
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menuconfig IMX9_LPI2C1
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bool "LPI2C1"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C1
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config IMX9_LPI2C1_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C1_DMA
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bool "Enable DMA for I2C1"
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default n
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depends on IMX9_LPI2C_DMA
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config IMX9_LPI2C1_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C1_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C1
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menuconfig IMX9_LPI2C2
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bool "LPI2C2"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C2
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config IMX9_LPI2C2_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C2_DMA
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bool "Enable DMA for I2C2"
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default n
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depends on IMX9_LPI2C_DMA
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config IMX9_LPI2C2_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C2_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C2
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menuconfig IMX9_LPI2C3
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bool "LPI2C3"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C3
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config IMX9_LPI2C3_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C3_DMA
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bool "Enable DMA for I2C3"
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default n
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depends on IMX9_LPI2C_DMA
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config IMX9_LPI2C3_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C3_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C3
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menuconfig IMX9_LPI2C4
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bool "LPI2C4"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C4
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config IMX9_LPI2C4_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C4_DMA
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bool "Enable DMA for I2C4"
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default n
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depends on IMX9_LPI2C_DMA
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config IMX9_LPI2C4_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C4_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C4
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menuconfig IMX9_LPI2C5
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bool "LPI2C5"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C5
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config IMX9_LPI2C5_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C5_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C5_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C5
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menuconfig IMX9_LPI2C6
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bool "LPI2C6"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C6
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config IMX9_LPI2C6_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C6_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C6_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C6
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menuconfig IMX9_LPI2C7
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bool "LPI2C7"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C7
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config IMX9_LPI2C7_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C7_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C7_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C7
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menuconfig IMX9_LPI2C8
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bool "LPI2C8"
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default n
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select IMX9_LPI2C
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if IMX9_LPI2C8
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config IMX9_LPI2C8_BUSYIDLE
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int "Bus idle timeout period in clock cycles"
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default 0
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config IMX9_LPI2C8_FILTSCL
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int "I2C master digital glitch filters for SCL input in clock cycles"
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default 0
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config IMX9_LPI2C8_FILTSDA
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int "I2C master digital glitch filters for SDA input in clock cycles"
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default 0
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endif # IMX9_LPI2C8
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endmenu # LPI2C Peripherals
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menu "LPI2C Configuration"
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depends on IMX9_LPI2C
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config IMX9_LPI2C_DMA
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bool "I2C DMA Support"
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default n
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depends on IMX9_LPI2C && IMX9_EDMA && !I2C_POLLED
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---help---
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This option enables the DMA for I2C transfers.
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Note: The user can define CONFIG_I2C_DMAPRIO: a custom priority value
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for the I2C dma streams, else the default priority level is set to
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medium.
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config IMX9_LPI2C_DMA_MAXMSG
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int "Maximum number messages that will be DMAed"
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default 8
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depends on IMX9_LPI2C_DMA
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---help---
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This option set the mumber of mesg that can be in a transfer.
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It is used to allocate space for the 16 bit LPI2C commands
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that will be DMA-ed to the LPI2C device.
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config IMX9_LPI2C_DYNTIMEO
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bool "Use dynamic timeouts"
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default n
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depends on IMX9_LPI2C
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config IMX9_LPI2C_DYNTIMEO_USECPERBYTE
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int "Timeout Microseconds per Byte"
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default 500
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depends on IMX9_LPI2C_DYNTIMEO
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config IMX9_LPI2C_DYNTIMEO_STARTSTOP
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int "Timeout for Start/Stop (Milliseconds)"
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default 1000
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depends on IMX9_LPI2C_DYNTIMEO
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config IMX9_LPI2C_TIMEOSEC
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int "Timeout seconds"
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default 0
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depends on IMX9_LPI2C
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config IMX9_LPI2C_TIMEOMS
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int "Timeout Milliseconds"
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default 500
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depends on IMX9_LPI2C && !IMX9_LPI2C_DYNTIMEO
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config IMX9_LPI2C_TIMEOTICKS
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int "Timeout for Done and Stop (ticks)"
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default 500
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depends on IMX9_LPI2C && !IMX9_LPI2C_DYNTIMEO
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endmenu # LPI2C Configuration
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endif # ARCH_CHIP_IMX9
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@@ -46,3 +46,7 @@ endif
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ifeq ($(CONFIG_IMX9_USBDEV),y)
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CHIP_CSRCS += imx9_usbdev.c
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endif
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ifeq ($(CONFIG_IMX9_LPI2C),y)
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CHIP_CSRCS += imx9_lpi2c.c
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endif
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,71 @@
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/****************************************************************************
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* arch/arm64/src/imx9/imx9_lpi2c.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM64_SRC_IMX9_IMX9_LPI2C_H
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#define __ARCH_ARM64_SRC_IMX9_IMX9_LPI2C_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/i2c/i2c_master.h>
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: imx9_i2cbus_initialize
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*
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* Description:
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* Initialize the selected I2C port. And return a unique instance of struct
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* struct i2c_master_s. This function may be called to obtain multiple
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* instances of the interface, each of which may be set up with a
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* different frequency and slave address.
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*
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* Input Parameters:
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* Port number (for hardware that has multiple I2C interfaces)
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*
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* Returned Value:
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* Valid I2C device structure reference on success; a NULL on failure
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*
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****************************************************************************/
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struct i2c_master_s *imx9_i2cbus_initialize(int port);
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/****************************************************************************
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* Name: imx9_i2cbus_uninitialize
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*
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* Description:
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* De-initialize the selected I2C port, and power down the device.
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*
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* Input Parameters:
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* Device structure as returned by the imx9_i2cbus_initialize()
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*
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* Returned Value:
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* OK on success, ERROR when internal reference count mismatch or dev
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* points to invalid hardware device.
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*
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****************************************************************************/
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int imx9_i2cbus_uninitialize(struct i2c_master_s *dev);
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#endif /* __ARCH_ARM64_SRC_IMX9_IMX9_LPI2C_H */
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@@ -28,9 +28,14 @@ CONFIG_FS_PROCFS=y
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CONFIG_FS_ROMFS=y
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CONFIG_HAVE_CXX=y
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CONFIG_HAVE_CXXINITIALIZE=y
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CONFIG_I2C=y
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CONFIG_I2C_RESET=y
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CONFIG_IDLETHREAD_STACKSIZE=8192
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CONFIG_IMX9_FLEXIO1_PWM=y
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CONFIG_IMX9_GPIO_IRQ=y
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CONFIG_IMX9_LPI2C1=y
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CONFIG_IMX9_LPI2C_DYNTIMEO=y
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CONFIG_IMX9_LPI2C_DYNTIMEO_STARTSTOP=10
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CONFIG_IMX9_TPM3_PWM=y
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CONFIG_IMX9_TPM3_PWM_CHMUX=0x00000003
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CONFIG_IMX9_UART1=y
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@@ -60,6 +65,7 @@ CONFIG_START_MONTH=3
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CONFIG_START_YEAR=2022
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CONFIG_SYMTAB_ORDEREDBYNAME=y
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CONFIG_SYSTEM_CDCACM=y
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CONFIG_SYSTEM_I2CTOOL=y
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CONFIG_SYSTEM_NSH=y
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CONFIG_SYSTEM_SYSTEM=y
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CONFIG_SYSTEM_TIME64=y
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@@ -31,6 +31,8 @@
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* Pre-processor Definitions
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****************************************************************************/
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#define IOMUX_LPI2C_DEFAULT (IOMUXC_PAD_OD_ENABLE | IOMUXC_PAD_FSEL_SFAST | IOMUXC_PAD_DSE_X6)
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/* FLEXIO to PWM pin muxings */
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/* EVK signals
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@@ -49,6 +51,16 @@
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#define TPM3_PWM3_MUX IOMUX_CFG(IOMUXC_PAD_GPIO_IO24_TPM3_CH3, IOMUXC_PAD_FSEL_SFAST | IOMUXC_PAD_DSE_X6, 0)
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/* LPI2Cs */
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#define MUX_LPI2C1_SCL IOMUX_CFG(IOMUXC_PAD_I2C1_SCL_LPI2C1_SCL, IOMUX_LPI2C_DEFAULT, IOMUXC_MUX_SION_ON)
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#define MUX_LPI2C1_SDA IOMUX_CFG(IOMUXC_PAD_I2C1_SDA_LPI2C1_SDA, IOMUX_LPI2C_DEFAULT, IOMUXC_MUX_SION_ON)
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/* I2C reset functionality */
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#define GPIO_LPI2C1_SCL_RESET (GPIO_PORT1 | GPIO_PIN0 | GPIO_OUTPUT | GPIO_OUTPUT_ONE)
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#define GPIO_LPI2C1_SDA_RESET (GPIO_PORT1 | GPIO_PIN1 | GPIO_OUTPUT | GPIO_OUTPUT_ONE)
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/****************************************************************************
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* Public Data
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****************************************************************************/
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@@ -30,4 +30,8 @@ ifeq ($(CONFIG_PWM),y)
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CSRCS += imx9_pwm.c
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endif
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ifeq ($(CONFIG_IMX9_LPI2C),y)
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CSRCS += imx9_i2c.c
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endif
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include $(TOPDIR)/boards/Board.mk
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@@ -67,5 +67,17 @@ int imx9_bringup(void);
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int imx9_pwm_setup(void);
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#endif
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/****************************************************************************
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* Name: imx9_i2c_setup
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*
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* Description:
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* Initialize I2C devices and driver
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*
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****************************************************************************/
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#if defined(CONFIG_I2C_DRIVER)
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int imx9_i2c_initialize(void);
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __BOARDS_ARM64_IMX9_IMX93_EVK_SRC_IMX93_EVK_H */
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@@ -23,8 +23,11 @@
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/board.h>
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#include "imx93-evk.h"
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/****************************************************************************
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@@ -67,6 +67,16 @@ int imx9_bringup(void)
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}
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#endif
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#if defined(CONFIG_I2C_DRIVER)
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/* Configure I2C peripheral interfaces */
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ret = imx9_i2c_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C driver: %d\n", ret);
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}
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#endif
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UNUSED(ret);
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return OK;
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}
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@@ -0,0 +1,77 @@
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/****************************************************************************
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* boards/arm64/imx9/imx93-evk/src/imx9_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 "imx9_lpi2c.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 imx9_i2c_initialize(void)
|
||||
{
|
||||
int ret = OK;
|
||||
|
||||
#ifdef CONFIG_IMX9_LPI2C1
|
||||
struct i2c_master_s *i2c;
|
||||
|
||||
i2c = imx9_i2cbus_initialize(1);
|
||||
if (i2c == NULL)
|
||||
{
|
||||
i2cerr("ERROR: Failed to init I2C0 interface\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_I2C_DRIVER
|
||||
ret = i2c_register(i2c, 0);
|
||||
if (ret < 0)
|
||||
{
|
||||
i2cerr("ERROR: Failed to register I2C0 driver: %d\n", ret);
|
||||
imx9_i2cbus_uninitialize(i2c);
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
return OK;
|
||||
}
|
||||
Reference in New Issue
Block a user