Change hardware flow control from poll to interrupt driven

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>

5 files changed, 0 insertions, 138 deletions

diff --git a/arch/blackfin/mach-bf527/include/mach/bfin_serial_5xx.h b/arch/blackfin/mach-bf527/include/mach/bfin_serial_5xx.h
index e8c41fd842b5..d2b160c14f04 100644
--- a/arch/blackfin/mach-bf527/include/mach/bfin_serial_5xx.h
+++ b/arch/blackfin/mach-bf527/include/mach/bfin_serial_5xx.h
@@ -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
-}
diff --git a/arch/blackfin/mach-bf533/include/mach/bfin_serial_5xx.h b/arch/blackfin/mach-bf533/include/mach/bfin_serial_5xx.h
index 5f517f53b0fd..70356ddf8509 100644
--- a/arch/blackfin/mach-bf533/include/mach/bfin_serial_5xx.h
+++ b/arch/blackfin/mach-bf533/include/mach/bfin_serial_5xx.h
@@ -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
-}
diff --git a/arch/blackfin/mach-bf537/include/mach/bfin_serial_5xx.h b/arch/blackfin/mach-bf537/include/mach/bfin_serial_5xx.h
index 9e34700844a2..d46fc4f50cf2 100644
--- a/arch/blackfin/mach-bf537/include/mach/bfin_serial_5xx.h
+++ b/arch/blackfin/mach-bf537/include/mach/bfin_serial_5xx.h
@@ -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
@@ -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
-}
diff --git a/arch/blackfin/mach-bf548/include/mach/bfin_serial_5xx.h b/arch/blackfin/mach-bf548/include/mach/bfin_serial_5xx.h
index c05e79cba257..388e2328aeba 100644
--- a/arch/blackfin/mach-bf548/include/mach/bfin_serial_5xx.h
+++ b/arch/blackfin/mach-bf548/include/mach/bfin_serial_5xx.h
@@ -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
-}
diff --git a/arch/blackfin/mach-bf561/include/mach/bfin_serial_5xx.h b/arch/blackfin/mach-bf561/include/mach/bfin_serial_5xx.h
index ca8c5f645209..d0469e3e16d8 100644
--- a/arch/blackfin/mach-bf561/include/mach/bfin_serial_5xx.h
+++ b/arch/blackfin/mach-bf561/include/mach/bfin_serial_5xx.h
@@ -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
-}