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SAMA5 SSC: Updated I2S driver

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This commit is contained in:
Gregory Nutt 2013-11-08 12:03:18 -06:00
parent 0516a4d1e9
commit c7cab0a5ff
3 changed files with 822 additions and 230 deletions
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2
TODO
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@ -1,4 +1,4 @@
NuttX TODO List (Last updated September 27, 2013)
NuttX TODO List (Last updated November 7, 2013)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This file summarizes known NuttX bugs, limitations, inconsistencies with

156
arch/arm/src/sama5/Kconfig
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@ -250,11 +250,13 @@ config SAMA5_SSC0
bool "Synchronous Serial Controller 0 (SSC0)"
default n
select I2S
depends on SAMA5_DMAC0
config SAMA5_SSC1
bool "Synchronous Serial Controller 1 (SSC1)"
default n
select I2S
depends on SAMA5_DMAC1
config SAMA5_CAN0
bool "CAN controller 0 (CAN0)"
@ -1378,27 +1380,23 @@ endif # SAMA5_TWI0 || SAMA5_TWI1 || SAMA5_TWI2
if SAMA5_SSC0 || SAMA5_SSC1
menu "SSC Configuration"
config SAMA5_SSC_DMA
bool "Enable SSC DMA"
default n
depends on (SAMA5_DMAC0 && SAMA5_SSC0) || (SAMA5_DMAC1 && SAMA5_SSC1)
---help---
Enable use of DMA in I2C tranfers
config SAMA5_SSC_DMATHRESHOLD
int "DMA transfer threshold"
default 4
depends on SAMA5_SSC_DMA
---help---
Small I2S transfers are better performed without using DMA. This
setting defines a threshold to select when small transfer should
be performed without using DMA.
if SAMA5_SSC0
comment "SSC0 Configuration"
config SAMA5_SSC0_MASTER
bool "Master mode"
default n
---help---
Selects master (vs. slave) mode data transfers
config SAMA5_SSC0_DATALEN
int "Data width (bits)"
default 16
---help---
Data width in bits.
config SAMA5_SSC0_RX
bool "Enable I2C receive"
bool "Enable I2C receiver"
default n
---help---
Enable I2S receipt logic
@ -1407,9 +1405,9 @@ if SAMA5_SSC0_RX
choice
prompt "Receiver clock source"
default SAMA5_SSC0_RX_INTCLK
default SAMA5_SSC0_RX_MCKDIV
config SAMA5_SSC0_RX_EXTCLK
config SAMA5_SSC0_RX_RKINPUT
bool "External Clock"
---help---
The SSC receiver clock is an external clock provided on the RK input
@ -1420,7 +1418,7 @@ config SAMA5_SSC0_RX_TXCLK
---help---
The SSC receiver clock is transmitter clock.
config SAMA5_SSC0_RX_INTCLK
config SAMA5_SSC0_RX_MCKDIV
bool "MCK/2"
---help---
The SSC receiver clock is the MCK/2 divided by a up to 4095.
@ -1430,15 +1428,31 @@ endchoice # Receiver clock source
config SAMA5_SSC0_RX_EXTFREQ
int "External reciver clock frequency"
default 100
depends on SAMA5_SSC0_RX_EXTCLK
depends on SAMA5_SSC0_RX_RKINPUT
---help---
If the receiver clock is provided via a clock input on the RK pin,
then the frequency of the receiver clock must be provided.
if !SAMA5_SSC0_RX_RKINPUT
choice
prompt "Receiver output clock"
default SAMA5_SSC0_RX_RKOUTPUT_NONE
config SAMA5_SSC0_RX_RKOUTPUT_NONE
bool "None"
config SAMA5_SSC0_RX_RKOUTPUT_CONT
bool "Continuous"
config SAMA5_SSC0_RX_RKOUTPUT_XFR
bool "Only during transfers"
endchoice # Receiver output clock
endif # !SAMA5_SSC0_RX_RKINPUT
endif # SAMA5_SSC0_RX
config SAMA5_SSC0_TX
bool "Enable I2C transmit"
bool "Enable I2C transmitter"
default n
---help---
Enable I2S transmission logic
@ -1447,9 +1461,9 @@ if SAMA5_SSC0_TX
choice
prompt "Transmitter clock source"
default SAMA5_SSC0_TX_INTCLK
default SAMA5_SSC0_TX_MCKDIV
config SAMA5_SSC0_TX_EXTCLK
config SAMA5_SSC0_TX_TKINPUT
bool "External Clock"
---help---
The SSC transmitter clock is an external clock provided on the TK input
@ -1460,7 +1474,7 @@ config SAMA5_SSC0_TX_RXCLK
---help---
The SSC transmitter clock is receiver clock.
config SAMA5_SSC0_TX_INTCLK
config SAMA5_SSC0_TX_MCKDIV
bool "MCK/2"
---help---
The SSC transmitter clock is the MCK/2 divided by a up to 4095.
@ -1470,17 +1484,33 @@ endchoice # Transmitter clock source
config SAMA5_SSC0_TX_EXTFREQ
int "External transmitter clock frequency"
default 100
depends on SAMA5_SSC0_TX_EXTCLK
depends on SAMA5_SSC0_TX_TKINPUT
---help---
If the transmitter clock is provided via a clock input on the TK pin,
then the frequency of the transmitter clock must be provided.
if !SAMA5_SSC0_TX_TKINPUT
choice
prompt "Transmitter output clock"
default SAMA5_SSC0_TX_TKOUTPUT_NONE
config SAMA5_SSC0_TX_TKOUTPUT_NONE
bool "None"
config SAMA5_SSC0_TX_TKOUTPUT_CONT
bool "Continuous"
config SAMA5_SSC0_TX_TKOUTPUT_XFR
bool "Only during transfers"
endchoice # Receiver output clock
endif # !SAMA5_SSC0_TX_TKINPUT
endif # SAMA5_SSC0_TX
config SAMA5_SSC0_TX_INTCLK_FREQUENCY
config SAMA5_SSC0_MCKDIV_FREQUENCY
int "Internal transmitter clock frequency"
default 100
depends on SAMA5_SSC0_RX_INTCLK || SAMA5_SSC0_TX_INTCLK
depends on SAMA5_SSC0_RX_MCKDIV || SAMA5_SSC0_TX_MCKDIV
---help---
If the either the receiver or transmitter clock is provided by MCK/2 divided
down, then the target frequency must be provided. The SSC driver will
@ -1493,8 +1523,20 @@ endif # SAMA5_SSC0
if SAMA5_SSC1
comment "SSC1 Configuration"
config SAMA5_SSC1_MASTER
bool "Master mode"
default n
---help---
Selects master (vs. slave) mode data transfers
config SAMA5_SSC1_DATALEN
int "Data width (bits)"
default 16
---help---
Data width in bits.
config SAMA5_SSC1_RX
bool "Enable I2C receive"
bool "Enable I2C receiver"
default n
---help---
Enable I2S receipt logic
@ -1503,9 +1545,9 @@ if SAMA5_SSC1_RX
choice
prompt "Receiver clock source"
default SAMA5_SSC1_RX_INTCLK
default SAMA5_SSC1_RX_MCKDIV
config SAMA5_SSC1_RX_EXTCLK
config SAMA5_SSC1_RX_RKINPUT
bool "External Clock"
---help---
The SSC receiver clock is an external clock provided on the RK input
@ -1516,7 +1558,7 @@ config SAMA5_SSC1_RX_TXCLK
---help---
The SSC receiver clock is transmitter clock.
config SAMA5_SSC1_RX_INTCLK
config SAMA5_SSC1_RX_MCKDIV
bool "MCK/2"
---help---
The SSC receiver clock is the MCK/2 divided by a up to 4095.
@ -1526,15 +1568,31 @@ endchoice # Receiver clock source
config SAMA5_SSC1_RX_EXTFREQ
int "External reciver clock frequency"
default 100
depends on SAMA5_SSC1_RX_EXTCLK
depends on SAMA5_SSC1_RX_RKINPUT
---help---
If the receiver clock is provided via a clock input on the RK pin,
then the frequency of the receiver clock must be provided.
if !SAMA5_SSC1_RX_RKINPUT
choice
prompt "Receiver output clock"
default SAMA5_SSC1_RX_RKOUTPUT_NONE
config SAMA5_SSC1_RX_RKOUTPUT_NONE
bool "None"
config SAMA5_SSC1_RX_RKOUTPUT_CONT
bool "Continuous"
config SAMA5_SSC1_RX_RKOUTPUT_XFR
bool "Only during transfers"
endchoice # Receiver output clock
endif # !SAMA5_SSC1_RX_RKINPUT
endif # SAMA5_SSC0_RX
config SAMA5_SSC1_TX
bool "Enable I2C transmit"
bool "Enable I2C transmitter"
default n
---help---
Enable I2S transmission logic
@ -1543,9 +1601,9 @@ if SAMA5_SSC1_TX
choice
prompt "Transmitter clock source"
default SAMA5_SSC1_TX_INTCLK
default SAMA5_SSC1_TX_MCKDIV
config SAMA5_SSC1_TX_EXTCLK
config SAMA5_SSC1_TX_TKINPUT
bool "External Clock"
---help---
The SSC transmitter clock is an external clock provided on the TK input
@ -1556,7 +1614,7 @@ config SAMA5_SSC1_TX_RXCLK
---help---
The SSC transmitter clock is receiver clock.
config SAMA5_SSC1_TX_INTCLK
config SAMA5_SSC1_TX_MCKDIV
bool "MCK/2"
---help---
The SSC transmitter clock is the MCK/2 divided by a up to 4095.
@ -1566,17 +1624,33 @@ endchoice # Transmitter clock source
config SAMA5_SSC1_TX_EXTFREQ
int "External transmitter clock frequency"
default 100
depends on SAMA5_SSC1_TX_EXTCLK
depends on SAMA5_SSC1_TX_TKINPUT
---help---
If the transmitter clock is provided via a clock input on the TK pin,
then the frequency of the transmitter clock must be provided.
if !SAMA5_SSC1_TX_TKINPUT
choice
prompt "Transmitter output clock"
default SAMA5_SSC1_TX_TKOUTPUT_NONE
config SAMA5_SSC1_TX_TKOUTPUT_NONE
bool "None"
config SAMA5_SSC1_TX_TKOUTPUT_CONT
bool "Continuous"
config SAMA5_SSC1_TX_TKOUTPUT_XFR
bool "Only during transfers"
endchoice # Receiver output clock
endif # !SAMA5_SSC1_TX_TKINPUT
endif # SAMA5_SSC1_TX
config SAMA5_SSC1_TX_INTCLK_FREQUENCY
config SAMA5_SSC1_MCKDIV_FREQUENCY
int "Internal transmitter clock frequency"
default 100
depends on SAMA5_SSC1_RX_INTCLK || SAMA5_SSC1_TX_INTCLK
depends on SAMA5_SSC1_RX_MCKDIV || SAMA5_SSC1_TX_MCKDIV
---help---
If the either the receiver or transmitter clock is provided by MCK/2 divided
down, then the target frequency must be provided. The SSC driver will
@ -1588,7 +1662,7 @@ endif # SAMA5_SSC1
config SAMA5_SSC_DMADEBUG
bool "SSC DMA transfer debug"
depends on SAMA5_SSC_DMA && DEBUG && DEBUG_DMA
depends on DEBUG && DEBUG_DMA
default n
---help---
Enable special debug instrumentation analyze SSC DMA data transfers.

894
arch/arm/src/sama5/sam_ssc.c
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