diff options
Diffstat (limited to 'target/linux/ixp4xx/patches-3.3/160-delayed_uart_io.patch')
| -rw-r--r-- | target/linux/ixp4xx/patches-3.3/160-delayed_uart_io.patch | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/target/linux/ixp4xx/patches-3.3/160-delayed_uart_io.patch b/target/linux/ixp4xx/patches-3.3/160-delayed_uart_io.patch deleted file mode 100644 index 18d9397..0000000 --- a/target/linux/ixp4xx/patches-3.3/160-delayed_uart_io.patch +++ /dev/null @@ -1,122 +0,0 @@ -Add a new UART I/O type for slow busses such as the ixp4xx expansion bus ---- a/include/linux/serial_8250.h -+++ b/include/linux/serial_8250.h -@@ -27,6 +27,7 @@ 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 -@@ -324,6 +324,7 @@ struct uart_port { - #define UPIO_AU (4) /* Au1x00 type IO */ - #define UPIO_TSI (5) /* Tsi108/109 type IO */ - #define UPIO_RM9000 (6) /* RM9000 type IO */ -+#define UPIO_MEM_DELAY (7) - - unsigned int read_status_mask; /* driver specific */ - unsigned int ignore_status_mask; /* driver specific */ -@@ -368,6 +369,7 @@ struct uart_port { - - 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/drivers/tty/serial/8250/8250.c -+++ b/drivers/tty/serial/8250/8250.c -@@ -400,6 +400,20 @@ 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 = map_8250_out_reg(p, offset) << p->regshift; -@@ -459,6 +473,11 @@ static void set_io_from_upio(struct uart - p->serial_out = mem32_serial_out; - break; - -+ case UPIO_MEM_DELAY: -+ p->serial_in = memdelay_serial_in; -+ p->serial_out = memdelay_serial_out; -+ break; -+ - case UPIO_AU: - p->serial_in = au_serial_in; - p->serial_out = au_serial_out; -@@ -481,6 +500,7 @@ serial_out_sync(struct uart_8250_port *u - switch (p->iotype) { - case UPIO_MEM: - case UPIO_MEM32: -+ case UPIO_MEM_DELAY: - case UPIO_AU: - p->serial_out(p, offset, value); - p->serial_in(p, UART_LCR); /* safe, no side-effects */ -@@ -2498,6 +2518,7 @@ static int serial8250_request_std_resour - case UPIO_TSI: - case UPIO_MEM32: - case UPIO_MEM: -+ case UPIO_MEM_DELAY: - if (!up->port.mapbase) - break; - -@@ -2534,6 +2555,7 @@ static void serial8250_release_std_resou - case UPIO_TSI: - case UPIO_MEM32: - case UPIO_MEM: -+ case UPIO_MEM_DELAY: - if (!up->port.mapbase) - break; - -@@ -3050,6 +3072,7 @@ static int __devinit serial8250_probe(st - port.set_termios = p->set_termios; - port.pm = p->pm; - port.dev = &dev->dev; -+ port.rw_delay = p->rw_delay; - port.irqflags |= irqflag; - ret = serial8250_register_port(&port); - if (ret < 0) { -@@ -3199,6 +3222,7 @@ int serial8250_register_port(struct uart - uart->port.iotype = port->iotype; - uart->port.flags = port->flags | UPF_BOOT_AUTOCONF; - uart->port.mapbase = port->mapbase; -+ uart->port.rw_delay = port->rw_delay; - uart->port.private_data = port->private_data; - if (port->dev) - uart->port.dev = port->dev; ---- a/drivers/tty/serial/serial_core.c -+++ b/drivers/tty/serial/serial_core.c -@@ -2021,6 +2021,7 @@ 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_AU: -@@ -2436,6 +2437,7 @@ 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_AU: |