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r: 338400
b: refs/heads/master
c: 373bac4
h: refs/heads/master
v: v3
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Alan Cox authored and Greg Kroah-Hartman committed Oct 30, 2012
1 parent 771fefc commit 62a89d5
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 9f1096943a56c35cc85a0729ec759fd8a25e552f
refs/heads/master: 373bac4cf4c3198cc6d6b9aec7c5d576a06f1f1c
112 changes: 112 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-tty
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Expand Up @@ -26,3 +26,115 @@ Description:
UART port in serial_core, that is bound to TTY like ttyS0.
uartclk = 16 * baud_base

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/type
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current tty type for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/line
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current tty line number for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/port
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current tty port I/O address for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/irq
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current primary interrupt for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/flags
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the tty port status flags for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/xmit_fifo_size
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the transmit FIFO size for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/close_delay
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the closing delay time for this port in ms.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/closing_wait
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the close wait time for this port in ms.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/custom_divisor
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the custom divisor if any that is set on this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/io_type
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the I/O type that is to be used with the iomem base
address.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/iomem_base
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
The I/O memory base for this port.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.

What: /sys/class/tty/ttyS0/iomem_reg_shift
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the register shift indicating the spacing to be used
for accesses on this iomem address.

These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
145 changes: 145 additions & 0 deletions trunk/drivers/tty/serial/serial_core.c
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Expand Up @@ -2340,10 +2340,155 @@ static ssize_t uart_get_attr_uartclk(struct device *dev,
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.baud_base * 16);
}

static ssize_t uart_get_attr_type(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.type);
}
static ssize_t uart_get_attr_line(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.line);
}

static ssize_t uart_get_attr_port(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "0x%lX\n", (unsigned long)(tmp.port | (tmp.port_high << HIGH_BITS_OFFSET)));
}

static ssize_t uart_get_attr_irq(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.irq);
}

static ssize_t uart_get_attr_flags(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "0x%X\n", tmp.flags);
}

static ssize_t uart_get_attr_xmit_fifo_size(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.xmit_fifo_size);
}


static ssize_t uart_get_attr_close_delay(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.close_delay);
}


static ssize_t uart_get_attr_closing_wait(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.closing_wait);
}

static ssize_t uart_get_attr_custom_divisor(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.custom_divisor);
}

static ssize_t uart_get_attr_io_type(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.io_type);
}

static ssize_t uart_get_attr_iomem_base(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "0x%lX\n", (unsigned long)tmp.iomem_base);
}

static ssize_t uart_get_attr_iomem_reg_shift(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);

uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.iomem_reg_shift);
}

static DEVICE_ATTR(type, S_IRUSR | S_IRGRP, uart_get_attr_type, NULL);
static DEVICE_ATTR(line, S_IRUSR | S_IRGRP, uart_get_attr_line, NULL);
static DEVICE_ATTR(port, S_IRUSR | S_IRGRP, uart_get_attr_port, NULL);
static DEVICE_ATTR(irq, S_IRUSR | S_IRGRP, uart_get_attr_irq, NULL);
static DEVICE_ATTR(flags, S_IRUSR | S_IRGRP, uart_get_attr_flags, NULL);
static DEVICE_ATTR(xmit_fifo_size, S_IRUSR | S_IRGRP, uart_get_attr_xmit_fifo_size, NULL);
static DEVICE_ATTR(uartclk, S_IRUSR | S_IRGRP, uart_get_attr_uartclk, NULL);
static DEVICE_ATTR(close_delay, S_IRUSR | S_IRGRP, uart_get_attr_close_delay, NULL);
static DEVICE_ATTR(closing_wait, S_IRUSR | S_IRGRP, uart_get_attr_closing_wait, NULL);
static DEVICE_ATTR(custom_divisor, S_IRUSR | S_IRGRP, uart_get_attr_custom_divisor, NULL);
static DEVICE_ATTR(io_type, S_IRUSR | S_IRGRP, uart_get_attr_io_type, NULL);
static DEVICE_ATTR(iomem_base, S_IRUSR | S_IRGRP, uart_get_attr_iomem_base, NULL);
static DEVICE_ATTR(iomem_reg_shift, S_IRUSR | S_IRGRP, uart_get_attr_iomem_reg_shift, NULL);

static struct attribute *tty_dev_attrs[] = {
&dev_attr_type.attr,
&dev_attr_line.attr,
&dev_attr_port.attr,
&dev_attr_irq.attr,
&dev_attr_flags.attr,
&dev_attr_xmit_fifo_size.attr,
&dev_attr_uartclk.attr,
&dev_attr_close_delay.attr,
&dev_attr_closing_wait.attr,
&dev_attr_custom_divisor.attr,
&dev_attr_io_type.attr,
&dev_attr_iomem_base.attr,
&dev_attr_iomem_reg_shift.attr,
NULL,
};

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