diff options
Diffstat (limited to 'target/linux/ixp4xx/patches-4.4/160-delayed_uart_io.patch')
| -rw-r--r-- | target/linux/ixp4xx/patches-4.4/160-delayed_uart_io.patch | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/target/linux/ixp4xx/patches-4.4/160-delayed_uart_io.patch b/target/linux/ixp4xx/patches-4.4/160-delayed_uart_io.patch deleted file mode 100644 index 937a65e43a..0000000000 --- a/target/linux/ixp4xx/patches-4.4/160-delayed_uart_io.patch +++ /dev/null @@ -1,133 +0,0 @@ ---- a/drivers/tty/serial/8250/8250_core.c -+++ b/drivers/tty/serial/8250/8250_core.c -@@ -825,6 +825,7 @@ static int serial8250_probe(struct platf - uart.port.set_termios = p->set_termios; - uart.port.pm = p->pm; - uart.port.dev = &dev->dev; -+ uart.port.rw_delay = p->rw_delay; - uart.port.irqflags |= irqflag; - ret = serial8250_register_8250_port(&uart); - if (ret < 0) { -@@ -981,6 +982,7 @@ int serial8250_register_8250_port(struct - uart->bugs = up->bugs; - uart->port.mapbase = up->port.mapbase; - uart->port.mapsize = up->port.mapsize; -+ uart->port.rw_delay = up->port.rw_delay; - uart->port.private_data = up->port.private_data; - uart->tx_loadsz = up->tx_loadsz; - uart->capabilities = up->capabilities; ---- a/drivers/tty/serial/serial_core.c -+++ b/drivers/tty/serial/serial_core.c -@@ -2185,6 +2185,7 @@ uart_report_port(struct uart_driver *drv - snprintf(address, sizeof(address), - "I/O 0x%lx offset 0x%x", port->iobase, port->hub6); - break; -+ case UPIO_MEM_DELAY: - case UPIO_MEM: - case UPIO_MEM32: - case UPIO_MEM32BE: -@@ -2830,6 +2831,7 @@ int uart_match_port(struct uart_port *po - case UPIO_HUB6: - return (port1->iobase == port2->iobase) && - (port1->hub6 == port2->hub6); -+ case UPIO_MEM_DELAY: - case UPIO_MEM: - case UPIO_MEM32: - case UPIO_MEM32BE: ---- a/include/linux/serial_8250.h -+++ b/include/linux/serial_8250.h -@@ -28,6 +28,7 @@ struct plat_serial8250_port { - void *private_data; - unsigned char regshift; /* register shift */ - unsigned char iotype; /* UPIO_* */ -+ unsigned int rw_delay; /* udelay for slower busses IXP4XX Expansion Bus */ - unsigned char hub6; - upf_t flags; /* UPF_* flags */ - unsigned int type; /* If UPF_FIXED_TYPE */ ---- a/include/linux/serial_core.h -+++ b/include/linux/serial_core.h -@@ -150,6 +150,7 @@ struct uart_port { - #define UPIO_AU (SERIAL_IO_AU) /* Au1x00 and RT288x type IO */ - #define UPIO_TSI (SERIAL_IO_TSI) /* Tsi108/109 type IO */ - #define UPIO_MEM32BE (SERIAL_IO_MEM32BE) /* 32b big endian */ -+#define UPIO_MEM_DELAY (SERIAL_IO_MEM_DELAY) - - unsigned int read_status_mask; /* driver specific */ - unsigned int ignore_status_mask; /* driver specific */ -@@ -231,6 +232,7 @@ struct uart_port { - int hw_stopped; /* sw-assisted CTS flow state */ - unsigned int mctrl; /* current modem ctrl settings */ - unsigned int timeout; /* character-based timeout */ -+ unsigned int rw_delay; /* udelay for slow busses, IXP4XX Expansion Bus */ - unsigned int type; /* port type */ - const struct uart_ops *ops; - unsigned int custom_divisor; ---- a/include/uapi/linux/serial.h -+++ b/include/uapi/linux/serial.h -@@ -69,6 +69,7 @@ struct serial_struct { - #define SERIAL_IO_AU 4 - #define SERIAL_IO_TSI 5 - #define SERIAL_IO_MEM32BE 6 -+#define SERIAL_IO_MEM_DELAY 7 - - #define UART_CLEAR_FIFO 0x01 - #define UART_USE_FIFO 0x02 ---- a/drivers/tty/serial/8250/8250_port.c -+++ b/drivers/tty/serial/8250/8250_port.c -@@ -368,6 +368,20 @@ static void mem_serial_out(struct uart_p - writeb(value, p->membase + offset); - } - -+static unsigned int memdelay_serial_in(struct uart_port *p, int offset) -+{ -+ struct uart_8250_port *up = (struct uart_8250_port *)p; -+ udelay(up->port.rw_delay); -+ return mem_serial_in(p, offset); -+} -+ -+static void memdelay_serial_out(struct uart_port *p, int offset, int value) -+{ -+ struct uart_8250_port *up = (struct uart_8250_port *)p; -+ udelay(up->port.rw_delay); -+ mem_serial_out(p, offset, value); -+} -+ - static void mem32_serial_out(struct uart_port *p, int offset, int value) - { - offset = offset << p->regshift; -@@ -435,6 +449,11 @@ static void set_io_from_upio(struct uart - p->serial_out = mem32be_serial_out; - break; - -+ case UPIO_MEM_DELAY: -+ p->serial_in = memdelay_serial_in; -+ p->serial_out = memdelay_serial_out; -+ break; -+ - #ifdef CONFIG_SERIAL_8250_RT288X - case UPIO_AU: - p->serial_in = au_serial_in; -@@ -461,6 +480,7 @@ serial_port_out_sync(struct uart_port *p - case UPIO_MEM: - case UPIO_MEM32: - case UPIO_MEM32BE: -+ case UPIO_MEM_DELAY: - case UPIO_AU: - p->serial_out(p, offset, value); - p->serial_in(p, UART_LCR); /* safe, no side-effects */ -@@ -2460,6 +2480,7 @@ static int serial8250_request_std_resour - case UPIO_MEM32: - case UPIO_MEM32BE: - case UPIO_MEM: -+ case UPIO_MEM_DELAY: - if (!port->mapbase) - break; - -@@ -2497,6 +2518,7 @@ static void serial8250_release_std_resou - case UPIO_MEM32: - case UPIO_MEM32BE: - case UPIO_MEM: -+ case UPIO_MEM_DELAY: - if (!port->mapbase) - break; - |