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dma support 16550 uart

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Signed-off-by: zhanghu5 <zhanghu5@xiaomi.com>
This commit is contained in:
zhanghu5
2023-05-22 15:16:36 +08:00
committed by Xiang Xiao
parent 672302bd57
commit a043657323
3 changed files with 576 additions and 40 deletions
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drivers/serial/Kconfig-16550
+168
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@@ -27,6 +27,10 @@ config 16550_UART0_BASE
config 16550_UART0_CLOCK
int "16550 UART0 clock"
config 16550_UART0_CLOCK_NAME
string "16550 UART0 clock name"
depends on CLK
config 16550_UART0_IRQ
int "16550 UART0 IRQ number"
@@ -79,6 +83,44 @@ config 16550_UART0_OFLOWCONTROL
---help---
Enable 16550 UART0 CTS flow control
config 16550_UART0_DMA
bool "16550 UART0 DMA support"
default n
select ARCH_DMA
select SERIAL_DMA
---help---
Enable DMA transfers on 16550 UART0
if 16550_UART0_DMA
config 16550_UART0_DMA_TX
int "16550 UART0 DMA Tx channel identity"
default -1
---help---
-1 means don't use DMA for sending
config 16550_UART0_DMA_RX
int "16550 UART0 DMA Rx channel identity"
default -1
---help---
-1 means don't use DMA for receiving
config 16550_UART0_DMA_RXBUFSIZE
int "16550 UART0 DMA Rx buffer size"
depends on 16550_UART0_DMA_RX != -1
default 16550_UART0_RXBUFSIZE
---help---
16550 UART0 DMA Rx buffer size.
config 16550_UART0_DMA_RXTIMEOUT
int "16550 UART0 DMA Rx timeout(char)"
depends on 16550_UART0_DMA_RX != -1
default 1
---help---
0 means DMA has no timeout for receiving
endif
endif # 16550_UART0
config 16550_UART1
@@ -93,6 +135,10 @@ config 16550_UART1_BASE
config 16550_UART1_CLOCK
int "16550 UART1 clock"
config 16550_UART1_CLOCK_NAME
string "16550 UART1 clock name"
depends on CLK
config 16550_UART1_IRQ
int "16550 UART1 IRQ number"
@@ -145,6 +191,44 @@ config 16550_UART1_OFLOWCONTROL
---help---
Enable 16550 UART1 CTS flow control
config 16550_UART1_DMA
bool "16550 UART1 DMA support"
default n
select ARCH_DMA
select SERIAL_DMA
---help---
Enable DMA transfers on 16550 UART1
if 16550_UART1_DMA
config 16550_UART1_DMA_TX
int "16550 UART1 DMA Tx channel identity"
default -1
---help---
-1 means don't use DMA for sending
config 16550_UART1_DMA_RX
int "16550 UART1 DMA Rx channel identity"
default -1
---help---
-1 means don't use DMA for receiving
config 16550_UART1_DMA_RXBUFSIZE
int "16550 UART1 DMA Rx buffer size"
depends on 16550_UART1_DMA_RX != -1
default 16550_UART1_RXBUFSIZE
---help---
16550 UART1 DMA Rx buffer size.
config 16550_UART1_DMA_RXTIMEOUT
int "16550 UART1 DMA Rx timeout(char)"
depends on 16550_UART1_DMA_RX != -1
default 1
---help---
0 means DMA has no timeout for receiving
endif
endif # 16550_UART1
config 16550_UART2
@@ -159,6 +243,10 @@ config 16550_UART2_BASE
config 16550_UART2_CLOCK
int "16550 UART2 clock"
config 16550_UART2_CLOCK_NAME
string "16550 UART2 clock name"
depends on CLK
config 16550_UART2_IRQ
int "16550 UART2 IRQ number"
@@ -211,6 +299,44 @@ config 16550_UART2_OFLOWCONTROL
---help---
Enable 16550 UART2 CTS flow control
config 16550_UART2_DMA
bool "16550 UART2 DMA support"
default n
select ARCH_DMA
select SERIAL_DMA
---help---
Enable DMA transfers on 16550 UART2
if 16550_UART2_DMA
config 16550_UART2_DMA_TX
int "16550 UART2 DMA Tx channel identity"
default -1
---help---
-1 means don't use DMA for sending
config 16550_UART2_DMA_RX
int "16550 UART2 DMA Rx channel identity"
default -1
---help---
-1 means don't use DMA for receiving
config 16550_UART2_DMA_RXBUFSIZE
int "16550 UART2 DMA Rx buffer size"
depends on 16550_UART2_DMA_RX != -1
default 16550_UART2_RXBUFSIZE
---help---
16550 UART2 DMA Rx buffer size.
config 16550_UART2_DMA_RXTIMEOUT
int "16550 UART2 DMA Rx timeout(char)"
depends on 16550_UART2_DMA_RX != -1
default 1
---help---
0 means DMA has no timeout for receiving
endif
endif # 16550_UART2
config 16550_UART3
@@ -225,6 +351,10 @@ config 16550_UART3_BASE
config 16550_UART3_CLOCK
int "16550 UART3 clock"
config 16550_UART3_CLOCK_NAME
string "16550 UART3 clock name"
depends on CLK
config 16550_UART3_IRQ
int "16550 UART3 IRQ number"
@@ -277,6 +407,44 @@ config 16550_UART3_OFLOWCONTROL
---help---
Enable 16550 UART3 CTS flow control
config 16550_UART3_DMA
bool "16550 UART3 DMA support"
default n
select ARCH_DMA
select SERIAL_DMA
---help---
Enable DMA transfers on 16550 UART3
if 16550_UART3_DMA
config 16550_UART3_DMA_TX
int "16550 UART3 DMA Tx channel identity"
default -1
---help---
-1 means don't use DMA for sending
config 16550_UART3_DMA_RX
int "16550 UART3 DMA Rx channel identity"
default -1
---help---
-1 means don't use DMA for receiving
config 16550_UART3_DMA_RXBUFSIZE
int "16550 UART3 DMA Rx buffer size"
depends on 16550_UART3_DMA_RX != -1
default 16550_UART3_RXBUFSIZE
---help---
16550 UART3 DMA Rx buffer size.
config 16550_UART3_DMA_RXTIMEOUT
int "16550 UART3 DMA Rx timeout(char)"
depends on 16550_UART3_DMA_RX != -1
default 1
---help---
0 means DMA has no timeout for receiving
endif
endif # 16550_UART3
choice
drivers/serial/uart_16550.c
+404 -40
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File diff suppressed because it is too large Load Diff
include/nuttx/serial/uart_16550.h
+4
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@@ -376,5 +376,9 @@ void uart_putreg(uart_addrwidth_t base,
struct file; /* Forward reference */
int uart_ioctl(struct file *filep, int cmd, unsigned long arg);
struct dma_chan_s;
FAR struct dma_chan_s *uart_dmachan(uart_addrwidth_t base,
unsigned int ident);
#endif /* CONFIG_16550_UART */
#endif /* __INCLUDE_NUTTX_SERIAL_UART_16550_H */