501 lines
12 KiB
C
501 lines
12 KiB
C
/*
|
|
* tm6000-input.c - driver for TM5600/TM6000/TM6010 USB video capture devices
|
|
*
|
|
* Copyright (C) 2010 Stefan Ringel <stefan.ringel@arcor.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation version 2
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/input.h>
|
|
#include <linux/usb.h>
|
|
|
|
#include <media/rc-core.h>
|
|
|
|
#include "tm6000.h"
|
|
#include "tm6000-regs.h"
|
|
|
|
static unsigned int ir_debug;
|
|
module_param(ir_debug, int, 0644);
|
|
MODULE_PARM_DESC(ir_debug, "debug message level");
|
|
|
|
static unsigned int enable_ir = 1;
|
|
module_param(enable_ir, int, 0644);
|
|
MODULE_PARM_DESC(enable_ir, "enable ir (default is enable)");
|
|
|
|
static unsigned int ir_clock_mhz = 12;
|
|
module_param(ir_clock_mhz, int, 0644);
|
|
MODULE_PARM_DESC(enable_ir, "ir clock, in MHz");
|
|
|
|
#define URB_SUBMIT_DELAY 100 /* ms - Delay to submit an URB request on retrial and init */
|
|
#define URB_INT_LED_DELAY 100 /* ms - Delay to turn led on again on int mode */
|
|
|
|
#undef dprintk
|
|
|
|
#define dprintk(level, fmt, arg...) do {\
|
|
if (ir_debug >= level) \
|
|
printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
|
|
} while (0)
|
|
|
|
struct tm6000_ir_poll_result {
|
|
u16 rc_data;
|
|
};
|
|
|
|
struct tm6000_IR {
|
|
struct tm6000_core *dev;
|
|
struct rc_dev *rc;
|
|
char name[32];
|
|
char phys[32];
|
|
|
|
/* poll expernal decoder */
|
|
int polling;
|
|
struct delayed_work work;
|
|
u8 wait:1;
|
|
u8 pwled:2;
|
|
u8 submit_urb:1;
|
|
u16 key_addr;
|
|
struct urb *int_urb;
|
|
|
|
/* IR device properties */
|
|
u64 rc_type;
|
|
};
|
|
|
|
void tm6000_ir_wait(struct tm6000_core *dev, u8 state)
|
|
{
|
|
struct tm6000_IR *ir = dev->ir;
|
|
|
|
if (!dev->ir)
|
|
return;
|
|
|
|
dprintk(2, "%s: %i\n",__func__, ir->wait);
|
|
|
|
if (state)
|
|
ir->wait = 1;
|
|
else
|
|
ir->wait = 0;
|
|
}
|
|
|
|
static int tm6000_ir_config(struct tm6000_IR *ir)
|
|
{
|
|
struct tm6000_core *dev = ir->dev;
|
|
u32 pulse = 0, leader = 0;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
/*
|
|
* The IR decoder supports RC-5 or NEC, with a configurable timing.
|
|
* The timing configuration there is not that accurate, as it uses
|
|
* approximate values. The NEC spec mentions a 562.5 unit period,
|
|
* and RC-5 uses a 888.8 period.
|
|
* Currently, driver assumes a clock provided by a 12 MHz XTAL, but
|
|
* a modprobe parameter can adjust it.
|
|
* Adjustments are required for other timings.
|
|
* It seems that the 900ms timing for NEC is used to detect a RC-5
|
|
* IR, in order to discard such decoding
|
|
*/
|
|
|
|
switch (ir->rc_type) {
|
|
case RC_TYPE_NEC:
|
|
leader = 900; /* ms */
|
|
pulse = 700; /* ms - the actual value would be 562 */
|
|
break;
|
|
default:
|
|
case RC_TYPE_RC5:
|
|
leader = 900; /* ms - from the NEC decoding */
|
|
pulse = 1780; /* ms - The actual value would be 1776 */
|
|
break;
|
|
}
|
|
|
|
pulse = ir_clock_mhz * pulse;
|
|
leader = ir_clock_mhz * leader;
|
|
if (ir->rc_type == RC_TYPE_NEC)
|
|
leader = leader | 0x8000;
|
|
|
|
dprintk(2, "%s: %s, %d MHz, leader = 0x%04x, pulse = 0x%06x \n",
|
|
__func__,
|
|
(ir->rc_type == RC_TYPE_NEC) ? "NEC" : "RC-5",
|
|
ir_clock_mhz, leader, pulse);
|
|
|
|
/* Remote WAKEUP = enable, normal mode, from IR decoder output */
|
|
tm6000_set_reg(dev, TM6010_REQ07_RE5_REMOTE_WAKEUP, 0xfe);
|
|
|
|
/* Enable IR reception on non-busrt mode */
|
|
tm6000_set_reg(dev, TM6010_REQ07_RD8_IR, 0x2f);
|
|
|
|
/* IR_WKUP_SEL = Low byte in decoded IR data */
|
|
tm6000_set_reg(dev, TM6010_REQ07_RDA_IR_WAKEUP_SEL, 0xff);
|
|
/* IR_WKU_ADD code */
|
|
tm6000_set_reg(dev, TM6010_REQ07_RDB_IR_WAKEUP_ADD, 0xff);
|
|
|
|
tm6000_set_reg(dev, TM6010_REQ07_RDC_IR_LEADER1, leader >> 8);
|
|
tm6000_set_reg(dev, TM6010_REQ07_RDD_IR_LEADER0, leader);
|
|
|
|
tm6000_set_reg(dev, TM6010_REQ07_RDE_IR_PULSE_CNT1, pulse >> 8);
|
|
tm6000_set_reg(dev, TM6010_REQ07_RDF_IR_PULSE_CNT0, pulse);
|
|
|
|
if (!ir->polling)
|
|
tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
|
|
else
|
|
tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1);
|
|
msleep(10);
|
|
|
|
/* Shows that IR is working via the LED */
|
|
tm6000_flash_led(dev, 0);
|
|
msleep(100);
|
|
tm6000_flash_led(dev, 1);
|
|
ir->pwled = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tm6000_ir_urb_received(struct urb *urb)
|
|
{
|
|
struct tm6000_core *dev = urb->context;
|
|
struct tm6000_IR *ir = dev->ir;
|
|
struct tm6000_ir_poll_result poll_result;
|
|
char *buf;
|
|
int rc;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
if (urb->status < 0 || urb->actual_length <= 0) {
|
|
printk(KERN_INFO "tm6000: IR URB failure: status: %i, length %i\n",
|
|
urb->status, urb->actual_length);
|
|
ir->submit_urb = 1;
|
|
schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_SUBMIT_DELAY));
|
|
return;
|
|
}
|
|
buf = urb->transfer_buffer;
|
|
|
|
if (ir_debug)
|
|
print_hex_dump(KERN_DEBUG, "tm6000: IR data: ",
|
|
DUMP_PREFIX_OFFSET,16, 1,
|
|
buf, urb->actual_length, false);
|
|
|
|
poll_result.rc_data = buf[0];
|
|
if (urb->actual_length > 1)
|
|
poll_result.rc_data |= buf[1] << 8;
|
|
|
|
dprintk(1, "%s, scancode: 0x%04x\n",__func__, poll_result.rc_data);
|
|
rc_keydown(ir->rc, poll_result.rc_data, 0);
|
|
|
|
rc = usb_submit_urb(urb, GFP_ATOMIC);
|
|
/*
|
|
* Flash the led. We can't do it here, as it is running on IRQ context.
|
|
* So, use the scheduler to do it, in a few ms.
|
|
*/
|
|
ir->pwled = 2;
|
|
schedule_delayed_work(&ir->work, msecs_to_jiffies(10));
|
|
}
|
|
|
|
static void tm6000_ir_handle_key(struct work_struct *work)
|
|
{
|
|
struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);
|
|
struct tm6000_core *dev = ir->dev;
|
|
struct tm6000_ir_poll_result poll_result;
|
|
int rc;
|
|
u8 buf[2];
|
|
|
|
if (ir->wait)
|
|
return;
|
|
|
|
dprintk(3, "%s\n",__func__);
|
|
|
|
rc = tm6000_read_write_usb(dev, USB_DIR_IN |
|
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
REQ_02_GET_IR_CODE, 0, 0, buf, 2);
|
|
if (rc < 0)
|
|
return;
|
|
|
|
if (rc > 1)
|
|
poll_result.rc_data = buf[0] | buf[1] << 8;
|
|
else
|
|
poll_result.rc_data = buf[0];
|
|
|
|
/* Check if something was read */
|
|
if ((poll_result.rc_data & 0xff) == 0xff) {
|
|
if (!ir->pwled) {
|
|
tm6000_flash_led(dev, 1);
|
|
ir->pwled = 1;
|
|
}
|
|
return;
|
|
}
|
|
|
|
dprintk(1, "%s, scancode: 0x%04x\n",__func__, poll_result.rc_data);
|
|
rc_keydown(ir->rc, poll_result.rc_data, 0);
|
|
tm6000_flash_led(dev, 0);
|
|
ir->pwled = 0;
|
|
|
|
/* Re-schedule polling */
|
|
schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
|
|
}
|
|
|
|
static void tm6000_ir_int_work(struct work_struct *work)
|
|
{
|
|
struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);
|
|
struct tm6000_core *dev = ir->dev;
|
|
int rc;
|
|
|
|
dprintk(3, "%s, submit_urb = %d, pwled = %d\n",__func__, ir->submit_urb,
|
|
ir->pwled);
|
|
|
|
if (ir->submit_urb) {
|
|
dprintk(3, "Resubmit urb\n");
|
|
tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
|
|
|
|
rc = usb_submit_urb(ir->int_urb, GFP_ATOMIC);
|
|
if (rc < 0) {
|
|
printk(KERN_ERR "tm6000: Can't submit an IR interrupt. Error %i\n",
|
|
rc);
|
|
/* Retry in 100 ms */
|
|
schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_SUBMIT_DELAY));
|
|
return;
|
|
}
|
|
ir->submit_urb = 0;
|
|
}
|
|
|
|
/* Led is enabled only if USB submit doesn't fail */
|
|
if (ir->pwled == 2) {
|
|
tm6000_flash_led(dev, 0);
|
|
ir->pwled = 0;
|
|
schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_INT_LED_DELAY));
|
|
} else if (!ir->pwled) {
|
|
tm6000_flash_led(dev, 1);
|
|
ir->pwled = 1;
|
|
}
|
|
}
|
|
|
|
static int tm6000_ir_start(struct rc_dev *rc)
|
|
{
|
|
struct tm6000_IR *ir = rc->priv;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
schedule_delayed_work(&ir->work, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tm6000_ir_stop(struct rc_dev *rc)
|
|
{
|
|
struct tm6000_IR *ir = rc->priv;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
cancel_delayed_work_sync(&ir->work);
|
|
}
|
|
|
|
static int tm6000_ir_change_protocol(struct rc_dev *rc, u64 rc_type)
|
|
{
|
|
struct tm6000_IR *ir = rc->priv;
|
|
|
|
if (!ir)
|
|
return 0;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
if ((rc->rc_map.scan) && (rc_type == RC_TYPE_NEC))
|
|
ir->key_addr = ((rc->rc_map.scan[0].scancode >> 8) & 0xffff);
|
|
|
|
ir->rc_type = rc_type;
|
|
|
|
tm6000_ir_config(ir);
|
|
/* TODO */
|
|
return 0;
|
|
}
|
|
|
|
static int __tm6000_ir_int_start(struct rc_dev *rc)
|
|
{
|
|
struct tm6000_IR *ir = rc->priv;
|
|
struct tm6000_core *dev = ir->dev;
|
|
int pipe, size;
|
|
int err = -ENOMEM;
|
|
|
|
if (!ir)
|
|
return -ENODEV;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
ir->int_urb = usb_alloc_urb(0, GFP_ATOMIC);
|
|
if (!ir->int_urb)
|
|
return -ENOMEM;
|
|
|
|
pipe = usb_rcvintpipe(dev->udev,
|
|
dev->int_in.endp->desc.bEndpointAddress
|
|
& USB_ENDPOINT_NUMBER_MASK);
|
|
|
|
size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
|
|
dprintk(1, "IR max size: %d\n", size);
|
|
|
|
ir->int_urb->transfer_buffer = kzalloc(size, GFP_ATOMIC);
|
|
if (ir->int_urb->transfer_buffer == NULL) {
|
|
usb_free_urb(ir->int_urb);
|
|
return err;
|
|
}
|
|
dprintk(1, "int interval: %d\n", dev->int_in.endp->desc.bInterval);
|
|
|
|
usb_fill_int_urb(ir->int_urb, dev->udev, pipe,
|
|
ir->int_urb->transfer_buffer, size,
|
|
tm6000_ir_urb_received, dev,
|
|
dev->int_in.endp->desc.bInterval);
|
|
|
|
ir->submit_urb = 1;
|
|
schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_SUBMIT_DELAY));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __tm6000_ir_int_stop(struct rc_dev *rc)
|
|
{
|
|
struct tm6000_IR *ir = rc->priv;
|
|
|
|
if (!ir || !ir->int_urb)
|
|
return;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
usb_kill_urb(ir->int_urb);
|
|
kfree(ir->int_urb->transfer_buffer);
|
|
usb_free_urb(ir->int_urb);
|
|
ir->int_urb = NULL;
|
|
}
|
|
|
|
int tm6000_ir_int_start(struct tm6000_core *dev)
|
|
{
|
|
struct tm6000_IR *ir = dev->ir;
|
|
|
|
if (!ir)
|
|
return 0;
|
|
|
|
return __tm6000_ir_int_start(ir->rc);
|
|
}
|
|
|
|
void tm6000_ir_int_stop(struct tm6000_core *dev)
|
|
{
|
|
struct tm6000_IR *ir = dev->ir;
|
|
|
|
if (!ir || !ir->rc)
|
|
return;
|
|
|
|
__tm6000_ir_int_stop(ir->rc);
|
|
}
|
|
|
|
int tm6000_ir_init(struct tm6000_core *dev)
|
|
{
|
|
struct tm6000_IR *ir;
|
|
struct rc_dev *rc;
|
|
int err = -ENOMEM;
|
|
|
|
if (!enable_ir)
|
|
return -ENODEV;
|
|
|
|
if (!dev->caps.has_remote)
|
|
return 0;
|
|
|
|
if (!dev->ir_codes)
|
|
return 0;
|
|
|
|
ir = kzalloc(sizeof(*ir), GFP_ATOMIC);
|
|
rc = rc_allocate_device();
|
|
if (!ir || !rc)
|
|
goto out;
|
|
|
|
dprintk(2, "%s\n", __func__);
|
|
|
|
/* record handles to ourself */
|
|
ir->dev = dev;
|
|
dev->ir = ir;
|
|
ir->rc = rc;
|
|
|
|
/* input setup */
|
|
rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC;
|
|
/* Neded, in order to support NEC remotes with 24 or 32 bits */
|
|
rc->scanmask = 0xffff;
|
|
rc->priv = ir;
|
|
rc->change_protocol = tm6000_ir_change_protocol;
|
|
if (dev->int_in.endp) {
|
|
rc->open = __tm6000_ir_int_start;
|
|
rc->close = __tm6000_ir_int_stop;
|
|
INIT_DELAYED_WORK(&ir->work, tm6000_ir_int_work);
|
|
} else {
|
|
rc->open = tm6000_ir_start;
|
|
rc->close = tm6000_ir_stop;
|
|
ir->polling = 50;
|
|
INIT_DELAYED_WORK(&ir->work, tm6000_ir_handle_key);
|
|
}
|
|
rc->driver_type = RC_DRIVER_SCANCODE;
|
|
|
|
snprintf(ir->name, sizeof(ir->name), "tm5600/60x0 IR (%s)",
|
|
dev->name);
|
|
|
|
usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
|
|
strlcat(ir->phys, "/input0", sizeof(ir->phys));
|
|
|
|
tm6000_ir_change_protocol(rc, RC_TYPE_UNKNOWN);
|
|
|
|
rc->input_name = ir->name;
|
|
rc->input_phys = ir->phys;
|
|
rc->input_id.bustype = BUS_USB;
|
|
rc->input_id.version = 1;
|
|
rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
|
|
rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
|
|
rc->map_name = dev->ir_codes;
|
|
rc->driver_name = "tm6000";
|
|
rc->dev.parent = &dev->udev->dev;
|
|
|
|
/* ir register */
|
|
err = rc_register_device(rc);
|
|
if (err)
|
|
goto out;
|
|
|
|
return 0;
|
|
|
|
out:
|
|
dev->ir = NULL;
|
|
rc_free_device(rc);
|
|
kfree(ir);
|
|
return err;
|
|
}
|
|
|
|
int tm6000_ir_fini(struct tm6000_core *dev)
|
|
{
|
|
struct tm6000_IR *ir = dev->ir;
|
|
|
|
/* skip detach on non attached board */
|
|
|
|
if (!ir)
|
|
return 0;
|
|
|
|
dprintk(2, "%s\n",__func__);
|
|
|
|
rc_unregister_device(ir->rc);
|
|
|
|
if (!ir->polling)
|
|
__tm6000_ir_int_stop(ir->rc);
|
|
|
|
tm6000_ir_stop(ir->rc);
|
|
|
|
/* Turn off the led */
|
|
tm6000_flash_led(dev, 0);
|
|
ir->pwled = 0;
|
|
|
|
|
|
kfree(ir);
|
|
dev->ir = NULL;
|
|
|
|
return 0;
|
|
}
|