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Change hardware flow control from poll to interrupt driven
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Only the CTS bit is affected.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Sonic Zhang authored and Linus Torvalds committed Apr 7, 2009
1 parent 1dcb884 commit 6f95570
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Showing 6 changed files with 82 additions and 187 deletions.
26 changes: 0 additions & 26 deletions arch/blackfin/mach-bf527/include/mach/bfin_serial_5xx.h
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Original file line number Diff line number Diff line change
Expand Up @@ -167,29 +167,3 @@ struct bfin_serial_res bfin_serial_resource[] = {
};

#define DRIVER_NAME "bfin-uart"

static void bfin_serial_hw_init(struct bfin_serial_port *uart)
{

#ifdef CONFIG_SERIAL_BFIN_UART0
peripheral_request(P_UART0_TX, DRIVER_NAME);
peripheral_request(P_UART0_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_UART1
peripheral_request(P_UART1_TX, DRIVER_NAME);
peripheral_request(P_UART1_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_CTSRTS
if (uart->cts_pin >= 0) {
gpio_request(uart->cts_pin, DRIVER_NAME);
gpio_direction_input(uart->cts_pin);
}

if (uart->rts_pin >= 0) {
gpio_request(uart->rts_pin, DRIVER_NAME);
gpio_direction_output(uart->rts_pin, 0);
}
#endif
}
20 changes: 0 additions & 20 deletions arch/blackfin/mach-bf533/include/mach/bfin_serial_5xx.h
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Original file line number Diff line number Diff line change
Expand Up @@ -142,23 +142,3 @@ struct bfin_serial_res bfin_serial_resource[] = {
};

#define DRIVER_NAME "bfin-uart"

static void bfin_serial_hw_init(struct bfin_serial_port *uart)
{

#ifdef CONFIG_SERIAL_BFIN_UART0
peripheral_request(P_UART0_TX, DRIVER_NAME);
peripheral_request(P_UART0_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_CTSRTS
if (uart->cts_pin >= 0) {
gpio_request(uart->cts_pin, DRIVER_NAME);
gpio_direction_input(uart->cts_pin);
}
if (uart->rts_pin >= 0) {
gpio_request(uart->rts_pin, DRIVER_NAME);
gpio_direction_output(uart->rts_pin, 0);
}
#endif
}
27 changes: 0 additions & 27 deletions arch/blackfin/mach-bf537/include/mach/bfin_serial_5xx.h
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Original file line number Diff line number Diff line change
Expand Up @@ -99,7 +99,6 @@ struct bfin_serial_port {
struct work_struct tx_dma_workqueue;
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
struct timer_list cts_timer;
int cts_pin;
int rts_pin;
#endif
Expand Down Expand Up @@ -167,29 +166,3 @@ struct bfin_serial_res bfin_serial_resource[] = {
};

#define DRIVER_NAME "bfin-uart"

static void bfin_serial_hw_init(struct bfin_serial_port *uart)
{

#ifdef CONFIG_SERIAL_BFIN_UART0
peripheral_request(P_UART0_TX, DRIVER_NAME);
peripheral_request(P_UART0_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_UART1
peripheral_request(P_UART1_TX, DRIVER_NAME);
peripheral_request(P_UART1_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_CTSRTS
if (uart->cts_pin >= 0) {
gpio_request(uart->cts_pin, DRIVER_NAME);
gpio_direction_input(uart->cts_pin);
}

if (uart->rts_pin >= 0) {
gpio_request(uart->rts_pin, DRIVER_NAME);
gpio_direction_output(uart->rts_pin, 0);
}
#endif
}
45 changes: 0 additions & 45 deletions arch/blackfin/mach-bf548/include/mach/bfin_serial_5xx.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -181,48 +181,3 @@ struct bfin_serial_res bfin_serial_resource[] = {
};

#define DRIVER_NAME "bfin-uart"

static void bfin_serial_hw_init(struct bfin_serial_port *uart)
{
#ifdef CONFIG_SERIAL_BFIN_UART0
peripheral_request(P_UART0_TX, DRIVER_NAME);
peripheral_request(P_UART0_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_UART1
peripheral_request(P_UART1_TX, DRIVER_NAME);
peripheral_request(P_UART1_RX, DRIVER_NAME);

#ifdef CONFIG_BFIN_UART1_CTSRTS
peripheral_request(P_UART1_RTS, DRIVER_NAME);
peripheral_request(P_UART1_CTS, DRIVER_NAME);
#endif
#endif

#ifdef CONFIG_SERIAL_BFIN_UART2
peripheral_request(P_UART2_TX, DRIVER_NAME);
peripheral_request(P_UART2_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_UART3
peripheral_request(P_UART3_TX, DRIVER_NAME);
peripheral_request(P_UART3_RX, DRIVER_NAME);

#ifdef CONFIG_BFIN_UART3_CTSRTS
peripheral_request(P_UART3_RTS, DRIVER_NAME);
peripheral_request(P_UART3_CTS, DRIVER_NAME);
#endif
#endif
SSYNC();
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
if (uart->cts_pin >= 0) {
gpio_request(uart->cts_pin, DRIVER_NAME);
gpio_direction_input(uart->cts_pin);
}

if (uart->rts_pin >= 0) {
gpio_request(uart->rts_pin, DRIVER_NAME);
gpio_direction_output(uart->rts_pin, 0);
}
#endif
}
20 changes: 0 additions & 20 deletions arch/blackfin/mach-bf561/include/mach/bfin_serial_5xx.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -142,23 +142,3 @@ struct bfin_serial_res bfin_serial_resource[] = {
};

#define DRIVER_NAME "bfin-uart"

static void bfin_serial_hw_init(struct bfin_serial_port *uart)
{

#ifdef CONFIG_SERIAL_BFIN_UART0
peripheral_request(P_UART0_TX, DRIVER_NAME);
peripheral_request(P_UART0_RX, DRIVER_NAME);
#endif

#ifdef CONFIG_SERIAL_BFIN_CTSRTS
if (uart->cts_pin >= 0) {
gpio_request(uart->cts_pin, DRIVER_NAME);
gpio_direction_input(uart->cts_pin);
}
if (uart->rts_pin >= 0) {
gpio_request(uart->rts_pin, DRIVER_NAME);
gpio_direction_output(uart->rts_pin, 0);
}
#endif
}
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