diff options
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/tty/serial/Makefile | 1 | ||||
| -rw-r--r-- | drivers/tty/serial/msm_smd_tty.c | 232 |
3 files changed, 0 insertions, 241 deletions
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index daee18338636..59a8ad6e7c3e 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1378,14 +1378,6 @@ config SERIAL_PCH_UART_CONSOLE (the system console is the device which receives all kernel messages and 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 depends on ARCH_MXS tristate "MXS AUART support" diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile index c3ac3d930b33..432cb6465227 100644 --- a/drivers/tty/serial/Makefile +++ b/drivers/tty/serial/Makefile @@ -79,7 +79,6 @@ obj-$(CONFIG_SERIAL_ALTERA_JTAGUART) += altera_jtaguart.o obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o obj-$(CONFIG_SERIAL_IFX6X60) += ifx6x60.o obj-$(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-$(CONFIG_SERIAL_LANTIQ) += lantiq.o obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o diff --git a/drivers/tty/serial/msm_smd_tty.c b/drivers/tty/serial/msm_smd_tty.c deleted file mode 100644 index 1238ac370bff..000000000000 --- a/drivers/tty/serial/msm_smd_tty.c +++ /dev/null @@ -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); |
