SAMA5 SSC: Add framework (only) for a forthcoming SSC-based I2S driver
This commit is contained in:
Gregory Nutt
parent
143c8042b8
commit
4214dc9ce9
@ -5984,4 +5984,8 @@
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* include/nuttx/audio/i2s.h: First cut at an I2S interface
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definition. This initial definition is sparse will will
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probably evolve significantly (2011-11-7).
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* arch/arm/src/sama5/sam_ssc.c and .h: Skeleton and build setup
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for a forthcoming SSC (aka I2S) driver for the SAMA5. The
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initial check-in is just the SAMA5 SPI driver gutted and hacked
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to use the I2S interface. More coming (2013-11-7).
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9
Kconfig
9
Kconfig
@ -481,6 +481,15 @@ config DEBUG_SPI
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Support for this debug option is architecture-specific and may not
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be available for some MCUs.
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config DEBUG_I2S
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bool "I2S Debug Output"
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default n
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depends on I2S
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---help---
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Enable I2S driver debug SYSLOG output (disabled by default).
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Support for this debug option is architecture-specific and may not
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be available for some MCUs.
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config DEBUG_CAN
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bool "CAN Debug Output"
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default n
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@ -249,10 +249,12 @@ config SAMA5_ISI
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config SAMA5_SSC0
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bool "Synchronous Serial Controller 0 (SSC0)"
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default n
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select I2S
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config SAMA5_SSC1
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bool "Synchronous Serial Controller 1 (SSC1)"
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default n
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select I2S
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config SAMA5_CAN0
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bool "CAN controller 0 (CAN0)"
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@ -1373,6 +1375,238 @@ config SAMA5_TWI_REGDEBUG
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endmenu # TWI device driver options
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endif # SAMA5_TWI0 || SAMA5_TWI1 || SAMA5_TWI2
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if SAMA5_SSC0 || SAMA5_SSC1
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menu "SSC Configuration"
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config SAMA5_SSC_DMA
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bool "Enable SSC DMA"
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default n
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depends on (SAMA5_DMAC0 && SAMA5_SSC0) || (SAMA5_DMAC1 && SAMA5_SSC1)
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---help---
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Enable use of DMA in I2C tranfers
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config SAMA5_SSC_DMATHRESHOLD
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int "DMA transfer threshold"
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default 4
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depends on SAMA5_SSC_DMA
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---help---
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Small I2S transfers are better performed without using DMA. This
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setting defines a threshold to select when small transfer should
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be performed without using DMA.
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if SAMA5_SSC0
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comment "SSC0 Configuration"
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config SAMA5_SSC0_RX
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bool "Enable I2C receive"
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default n
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---help---
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Enable I2S receipt logic
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if SAMA5_SSC0_RX
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choice
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prompt "Receiver clock source"
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default SAMA5_SSC0_RX_INTCLK
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config SAMA5_SSC0_RX_EXTCLK
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bool "External Clock"
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---help---
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The SSC receiver clock is an external clock provided on the RK input
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pin.
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config SAMA5_SSC0_RX_TXCLK
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bool "Transmitter Clock"
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---help---
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The SSC receiver clock is transmitter clock.
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config SAMA5_SSC0_RX_INTCLK
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bool "MCK/2"
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---help---
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The SSC receiver clock is the MCK/2 divided by a up to 4095.
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endchoice # Receiver clock source
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config SAMA5_SSC0_RX_EXTFREQ
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int "External reciver clock frequency"
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default 100
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depends on SAMA5_SSC0_RX_EXTCLK
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---help---
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If the receiver clock is provided via a clock input on the RK pin,
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then the frequency of the receiver clock must be provided.
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endif # SAMA5_SSC0_RX
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config SAMA5_SSC0_TX
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bool "Enable I2C transmit"
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default n
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---help---
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Enable I2S transmission logic
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if SAMA5_SSC0_TX
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choice
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prompt "Transmitter clock source"
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default SAMA5_SSC0_TX_INTCLK
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config SAMA5_SSC0_TX_EXTCLK
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bool "External Clock"
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---help---
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The SSC transmitter clock is an external clock provided on the TK input
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pin.
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config SAMA5_SSC0_TX_RXCLK
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bool "Receiver Clock"
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---help---
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The SSC transmitter clock is receiver clock.
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config SAMA5_SSC0_TX_INTCLK
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bool "MCK/2"
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---help---
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The SSC transmitter clock is the MCK/2 divided by a up to 4095.
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endchoice # Transmitter clock source
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config SAMA5_SSC0_TX_EXTFREQ
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int "External transmitter clock frequency"
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default 100
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depends on SAMA5_SSC0_TX_EXTCLK
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---help---
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If the transmitter clock is provided via a clock input on the TK pin,
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then the frequency of the transmitter clock must be provided.
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endif # SAMA5_SSC0_TX
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config SAMA5_SSC0_TX_INTCLK_FREQUENCY
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int "Internal transmitter clock frequency"
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default 100
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depends on SAMA5_SSC0_RX_INTCLK || SAMA5_SSC0_TX_INTCLK
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---help---
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If the either the receiver or transmitter clock is provided by MCK/2 divided
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down, then the target frequency must be provided. The SSC driver will
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determine the best divider to obtain that frequency (up to 4095). If the
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frequency is too low to be obtained by dividing down the MCK/2, a compile
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time error will occur.
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endif # SAMA5_SSC0
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if SAMA5_SSC1
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comment "SSC1 Configuration"
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config SAMA5_SSC1_RX
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bool "Enable I2C receive"
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default n
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---help---
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Enable I2S receipt logic
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if SAMA5_SSC1_RX
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choice
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prompt "Receiver clock source"
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default SAMA5_SSC1_RX_INTCLK
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config SAMA5_SSC1_RX_EXTCLK
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bool "External Clock"
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---help---
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The SSC receiver clock is an external clock provided on the RK input
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pin.
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config SAMA5_SSC1_RX_TXCLK
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bool "Transmitter Clock"
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---help---
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The SSC receiver clock is transmitter clock.
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config SAMA5_SSC1_RX_INTCLK
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bool "MCK/2"
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---help---
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The SSC receiver clock is the MCK/2 divided by a up to 4095.
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endchoice # Receiver clock source
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config SAMA5_SSC1_RX_EXTFREQ
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int "External reciver clock frequency"
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default 100
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depends on SAMA5_SSC1_RX_EXTCLK
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---help---
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If the receiver clock is provided via a clock input on the RK pin,
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then the frequency of the receiver clock must be provided.
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endif # SAMA5_SSC0_RX
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config SAMA5_SSC1_TX
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bool "Enable I2C transmit"
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default n
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---help---
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Enable I2S transmission logic
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if SAMA5_SSC1_TX
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choice
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prompt "Transmitter clock source"
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default SAMA5_SSC1_TX_INTCLK
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config SAMA5_SSC1_TX_EXTCLK
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bool "External Clock"
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---help---
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The SSC transmitter clock is an external clock provided on the TK input
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pin.
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config SAMA5_SSC1_TX_RXCLK
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bool "Receiver Clock"
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---help---
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The SSC transmitter clock is receiver clock.
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config SAMA5_SSC1_TX_INTCLK
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bool "MCK/2"
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---help---
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The SSC transmitter clock is the MCK/2 divided by a up to 4095.
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endchoice # Transmitter clock source
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config SAMA5_SSC1_TX_EXTFREQ
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int "External transmitter clock frequency"
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default 100
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depends on SAMA5_SSC1_TX_EXTCLK
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---help---
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If the transmitter clock is provided via a clock input on the TK pin,
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then the frequency of the transmitter clock must be provided.
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endif # SAMA5_SSC1_TX
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config SAMA5_SSC1_TX_INTCLK_FREQUENCY
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int "Internal transmitter clock frequency"
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default 100
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depends on SAMA5_SSC1_RX_INTCLK || SAMA5_SSC1_TX_INTCLK
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---help---
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If the either the receiver or transmitter clock is provided by MCK/2 divided
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down, then the target frequency must be provided. The SSC driver will
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determine the best divider to obtain that frequency (up to 4095). If the
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frequency is too low to be obtained by dividing down the MCK/2, a compile
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time error will occur.
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endif # SAMA5_SSC1
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config SAMA5_SSC_DMADEBUG
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bool "SSC DMA transfer debug"
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depends on SAMA5_SSC_DMA && DEBUG && DEBUG_DMA
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default n
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---help---
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Enable special debug instrumentation analyze SSC DMA data transfers.
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This logic is as non-invasive as possible: It samples DMA
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registers at key points in the data transfer and then dumps all of
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the registers at the end of the transfer.
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config SAMA5_SSC_REGDEBUG
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bool "SSC Register level debug"
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depends on DEBUG
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default n
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---help---
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Output detailed register-level SSC device debug information.
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Very invasive! Requires also DEBUG.
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endmenu # SSC Configuration
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endif # SAMA5_SSC0 || SAMA5_SSC1
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if SAMA5_HSMCI0 || SAMA5_HSMCI1 || SAMA5_HSMCI2
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menu "HSMCI device driver options"
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@ -131,6 +131,15 @@ else
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endif
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endif
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ifeq ($(CONFIG_SAMA5_SSC0),y)
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CHIP_CSRCS += sam_ssc.c
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else
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ifeq ($(CONFIG_SAMA5_SSC1),y)
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CHIP_CSRCS += sam_ssc.c
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else
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endif
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endif
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ifeq ($(CONFIG_SAMA5_LCDC),y)
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CHIP_CSRCS += sam_lcd.c
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endif
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@ -68,7 +68,7 @@
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#define SAM_SSC_IMR_OFFSET 0x004c /* Interrupt Mask Register */
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#define SAM_SSC_WPMR_OFFSET 0x00e4 /* Write Protect Mode Register */
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#define SAM_SSC_WPSR_OFFSET 0x00e8 /* Write Protect Status Register */
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/* 0x50-0x124 Reserved
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/* 0x50-0x124 Reserved */
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/* SSC Register Addresses ***********************************************************/
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1052
arch/arm/src/sama5/sam_ssc.c
Normal file
1052
arch/arm/src/sama5/sam_ssc.c
Normal file
File diff suppressed because it is too large
Load Diff
102
arch/arm/src/sama5/sam_ssc.h
Normal file
102
arch/arm/src/sama5/sam_ssc.h
Normal file
@ -0,0 +1,102 @@
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/************************************************************************************
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* arch/arm/src/sama5/sam_ssc.h
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_SAMA5_SAM_SSC_H
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#define __ARCH_ARM_SRC_SAMA5_SAM_SSC_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/audio/i2s.h>
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#include "chip.h"
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#include "chip/sam_ssc.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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#ifndef __ASSEMBLY__
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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/****************************************************************************
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* Name: sam_ssc_initialize
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*
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* Description:
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* Initialize the selected I2S port.
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*
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* Input Parameter:
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* Port number (for hardware that has mutiple I2S interfaces)
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*
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* Returned Value:
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* Valid I2S device structure reference on succcess; a NULL on failure
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*
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****************************************************************************/
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FAR struct i2s_dev_s *sam_ssc_initialize(int port);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_SAMA5_SAM_SSC_H */
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@ -161,6 +161,17 @@ if SPI
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source drivers/spi/Kconfig
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endif
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menuconfig I2S
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bool "I2S Driver Support"
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default n
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---help---
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This selection enables selection of common I2S options. This option
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should be enabled by all platforms that support I2S interfaces.
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See include/nuttx/audio/i2s.h for further I2S driver information.
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if I2S
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endif # I2S
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menuconfig RTC
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bool "RTC Driver Support"
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default n
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@ -170,10 +181,11 @@ menuconfig RTC
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Most RTC drivers are MCU specific and may require other specific
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settings.
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if RTC
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config RTC_DATETIME
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bool "Date/Time RTC Support"
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default n
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depends on RTC
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---help---
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There are two general types of RTC: (1) A simple battery backed
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counter that keeps the time when power is down, and (2) a full
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@ -182,10 +194,11 @@ config RTC_DATETIME
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of RTC. In this case, the RTC is used to "seed" the normal NuttX timer
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and the NuttX system timer provides for higher resolution time.
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if !RTC_DATETIME
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config RTC_HIRES
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bool "Hi-Res RTC Support"
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default n
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depends on RTC && !RTC_DATETIME
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---help---
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If RTC_DATETIME not selected, then the simple, battery backed counter
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is used. There are two different implementations of such simple
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@ -201,20 +214,23 @@ config RTC_HIRES
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config RTC_FREQUENCY
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int "Hi-Res RTC frequency"
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default 1
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depends on RTC && !RTC_DATETIME && RTC_HIRES
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depends on RTC_HIRES
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---help---
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If RTC_HIRES is defined, then the frequency of the high resolution RTC
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must be provided. If RTC_HIRES is not defined, RTC_FREQUENCY is
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assumed to be one Hz.
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endif # !RTC_DATETIME
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config RTC_ALARM
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bool "RTC Alarm Support"
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default n
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depends on RTC
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---help---
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Enable if the RTC hardware supports setting of an alarm. A callback
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function will be executed when the alarm goes off.
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endif # RTC
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menuconfig WATCHDOG
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bool "Watchdog Timer Support"
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default n
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@ -224,7 +240,7 @@ menuconfig WATCHDOG
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information.
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if WATCHDOG
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endif
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endif # WATCHDOG
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menuconfig ANALOG
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bool "Analog Device(ADC/DAC) Support"
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@ -46,6 +46,8 @@
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef CONFIG_I2S
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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@ -68,7 +70,7 @@
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*
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****************************************************************************/
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#define I2S_FREQUENCY(d,f) ((d)->ops->frequency(d,f))
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#define I2S_FREQUENCY(d,f) ((d)->ops->i2s_frequency(d,f))
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/****************************************************************************
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* Name: I2S_SEND
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||||
@ -86,8 +88,7 @@
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#define I2S_SEND(d,b,n) ((d)->ops->send(d,b,n))
|
||||
#endif
|
||||
#define I2S_SEND(d,b,n) ((d)->ops->i2s_send(d,b,n))
|
||||
|
||||
/****************************************************************************
|
||||
* Name: I2S_RECEIVE
|
||||
@ -106,7 +107,7 @@
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#define I2S_RECEIVE(d,b,n) ((d)->ops->recvblock(d,b,n))
|
||||
#define I2S_RECEIVE(d,b,n) ((d)->ops->i2s_receive(d,b,n))
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
@ -117,10 +118,10 @@
|
||||
struct i2s_dev_s;
|
||||
struct i2s_ops_s
|
||||
{
|
||||
uint32_t (*frequency)(FAR struct i2s_dev_s *dev, uint32_t frequency);
|
||||
void (*send)(FAR struct i2s_dev_s *dev, FAR const void *buffer,
|
||||
uint32_t (*i2s_frequency)(FAR struct i2s_dev_s *dev, uint32_t frequency);
|
||||
void (*i2s_send)(FAR struct i2s_dev_s *dev, FAR const void *buffer,
|
||||
size_t nbytes);
|
||||
void (*receive)(FAR struct i2s_dev_s *dev, FAR void *buffer,
|
||||
void (*i2s_receive)(FAR struct i2s_dev_s *dev, FAR void *buffer,
|
||||
size_t nbytes);
|
||||
};
|
||||
|
||||
@ -135,7 +136,7 @@ struct i2s_dev_s
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
#undef EXTERN
|
||||
@ -148,30 +149,13 @@ extern "C"
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_i2cinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the selected I2S port.
|
||||
*
|
||||
* This is a generic prototype for the I2S initialize logic. Specific
|
||||
* architectures may support different I2S initialization functions if,
|
||||
* for example, those architectures support multiple, incompatible I2S
|
||||
* implementations. In any event, the prototype of those architecture-
|
||||
* specific initialization functions should be the same as
|
||||
* up_i2cinitialize()
|
||||
*
|
||||
* Input Parameter:
|
||||
* Port number (for hardware that has mutiple I2S interfaces)
|
||||
*
|
||||
* Returned Value:
|
||||
* Valid I2S device structure reference on succcess; a NULL on failure
|
||||
*
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct i2s_dev_s *up_i2cinitialize(int port);
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_I2S */
|
||||
#endif /* __INCLUDE_NUTTX_AUDIO_I2S_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user