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TTY: msm_smd_tty: Remove unused driver

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This code is no longer used now that mach-msm has been removed.
Delete it.

Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Boyd
2015-04-10 16:11:05 -07:00
committed by Greg Kroah-Hartman
parent 27a4c827c3
commit 360ee94b47
3 changed files with 0 additions and 241 deletions
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8
drivers/tty/serial/Kconfig
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@@ -1378,14 +1378,6 @@ config SERIAL_PCH_UART_CONSOLE
(the system console is the device which receives all kernel messages and (the system console is the device which receives all kernel messages and
warnings and which allows logins in single user mode). warnings and which allows logins in single user mode).
config SERIAL_MSM_SMD
bool "Enable tty device interface for some SMD ports"
default n
depends on MSM_SMD
help
Enables userspace clients to read and write to some streaming SMD
ports via tty device interface for MSM chipset.
config SERIAL_MXS_AUART config SERIAL_MXS_AUART
depends on ARCH_MXS depends on ARCH_MXS
tristate "MXS AUART support" tristate "MXS AUART support"

1
drivers/tty/serial/Makefile
View File

@@ -79,7 +79,6 @@ obj-$(CONFIG_SERIAL_ALTERA_JTAGUART) += altera_jtaguart.o
obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o
obj-$(CONFIG_SERIAL_IFX6X60) += ifx6x60.o obj-$(CONFIG_SERIAL_IFX6X60) += ifx6x60.o
obj-$(CONFIG_SERIAL_PCH_UART) += pch_uart.o obj-$(CONFIG_SERIAL_PCH_UART) += pch_uart.o
obj-$(CONFIG_SERIAL_MSM_SMD) += msm_smd_tty.o
obj-$(CONFIG_SERIAL_MXS_AUART) += mxs-auart.o obj-$(CONFIG_SERIAL_MXS_AUART) += mxs-auart.o
obj-$(CONFIG_SERIAL_LANTIQ) += lantiq.o obj-$(CONFIG_SERIAL_LANTIQ) += lantiq.o
obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o

232
drivers/tty/serial/msm_smd_tty.c
View File

@@ -1,232 +0,0 @@
/*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/device.h>
#include <linux/wait.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <mach/msm_smd.h>
#define MAX_SMD_TTYS 32
struct smd_tty_info {
struct tty_port port;
smd_channel_t *ch;
};
struct smd_tty_channel_desc {
int id;
const char *name;
};
static struct smd_tty_info smd_tty[MAX_SMD_TTYS];
static const struct smd_tty_channel_desc smd_default_tty_channels[] = {
{ .id = 0, .name = "SMD_DS" },
{ .id = 27, .name = "SMD_GPSNMEA" },
};
static const struct smd_tty_channel_desc *smd_tty_channels =
smd_default_tty_channels;
static int smd_tty_channels_len = ARRAY_SIZE(smd_default_tty_channels);
static void smd_tty_notify(void *priv, unsigned event)
{
unsigned char *ptr;
int avail;
struct smd_tty_info *info = priv;
struct tty_struct *tty;
if (event != SMD_EVENT_DATA)
return;
tty = tty_port_tty_get(&info->port);
if (!tty)
return;
for (;;) {
if (test_bit(TTY_THROTTLED, &tty->flags))
break;
avail = smd_read_avail(info->ch);
if (avail == 0)
break;
avail = tty_prepare_flip_string(&info->port, &ptr, avail);
if (smd_read(info->ch, ptr, avail) != avail) {
/* shouldn't be possible since we're in interrupt
** context here and nobody else could 'steal' our
** characters.
*/
pr_err("OOPS - smd_tty_buffer mismatch?!");
}
tty_flip_buffer_push(&info->port);
}
/* XXX only when writable and necessary */
tty_wakeup(tty);
tty_kref_put(tty);
}
static int smd_tty_port_activate(struct tty_port *tport, struct tty_struct *tty)
{
struct smd_tty_info *info = container_of(tport, struct smd_tty_info,
port);
int i, res = 0;
const char *name = NULL;
for (i = 0; i < smd_tty_channels_len; i++) {
if (smd_tty_channels[i].id == tty->index) {
name = smd_tty_channels[i].name;
break;
}
}
if (!name)
return -ENODEV;
if (info->ch)
smd_kick(info->ch);
else
res = smd_open(name, &info->ch, info, smd_tty_notify);
if (!res)
tty->driver_data = info;
return res;
}
static void smd_tty_port_shutdown(struct tty_port *tport)
{
struct smd_tty_info *info = container_of(tport, struct smd_tty_info,
port);
if (info->ch) {
smd_close(info->ch);
info->ch = 0;
}
}
static int smd_tty_open(struct tty_struct *tty, struct file *f)
{
struct smd_tty_info *info = smd_tty + tty->index;
return tty_port_open(&info->port, tty, f);
}
static void smd_tty_close(struct tty_struct *tty, struct file *f)
{
struct smd_tty_info *info = tty->driver_data;
tty_port_close(&info->port, tty, f);
}
static int smd_tty_write(struct tty_struct *tty,
const unsigned char *buf, int len)
{
struct smd_tty_info *info = tty->driver_data;
int avail;
/* if we're writing to a packet channel we will
** never be able to write more data than there
** is currently space for
*/
avail = smd_write_avail(info->ch);
if (len > avail)
len = avail;
return smd_write(info->ch, buf, len);
}
static int smd_tty_write_room(struct tty_struct *tty)
{
struct smd_tty_info *info = tty->driver_data;
return smd_write_avail(info->ch);
}
static int smd_tty_chars_in_buffer(struct tty_struct *tty)
{
struct smd_tty_info *info = tty->driver_data;
return smd_read_avail(info->ch);
}
static void smd_tty_unthrottle(struct tty_struct *tty)
{
struct smd_tty_info *info = tty->driver_data;
smd_kick(info->ch);
}
static const struct tty_port_operations smd_tty_port_ops = {
.shutdown = smd_tty_port_shutdown,
.activate = smd_tty_port_activate,
};
static const struct tty_operations smd_tty_ops = {
.open = smd_tty_open,
.close = smd_tty_close,
.write = smd_tty_write,
.write_room = smd_tty_write_room,
.chars_in_buffer = smd_tty_chars_in_buffer,
.unthrottle = smd_tty_unthrottle,
};
static struct tty_driver *smd_tty_driver;
static int __init smd_tty_init(void)
{
int ret, i;
smd_tty_driver = alloc_tty_driver(MAX_SMD_TTYS);
if (smd_tty_driver == 0)
return -ENOMEM;
smd_tty_driver->driver_name = "smd_tty_driver";
smd_tty_driver->name = "smd";
smd_tty_driver->major = 0;
smd_tty_driver->minor_start = 0;
smd_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
smd_tty_driver->subtype = SERIAL_TYPE_NORMAL;
smd_tty_driver->init_termios = tty_std_termios;
smd_tty_driver->init_termios.c_iflag = 0;
smd_tty_driver->init_termios.c_oflag = 0;
smd_tty_driver->init_termios.c_cflag = B38400 | CS8 | CREAD;
smd_tty_driver->init_termios.c_lflag = 0;
smd_tty_driver->flags = TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_set_operations(smd_tty_driver, &smd_tty_ops);
ret = tty_register_driver(smd_tty_driver);
if (ret)
return ret;
for (i = 0; i < smd_tty_channels_len; i++) {
struct tty_port *port = &smd_tty[smd_tty_channels[i].id].port;
tty_port_init(port);
port->ops = &smd_tty_port_ops;
tty_port_register_device(port, smd_tty_driver,
smd_tty_channels[i].id, NULL);
}
return 0;
}
module_init(smd_tty_init);