blob: 32f7a0af6938094380e9de73b933f652f0a00612 [file] [log] [blame]
/*
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/ir-core.h>
#include <media/ir-common.h>
#include "tm6000.h"
#include "tm6000-regs.h"
static unsigned int ir_debug;
module_param(ir_debug, int, 0644);
MODULE_PARM_DESC(ir_debug, "enable debug message [IR]");
static unsigned int enable_ir = 1;
module_param(enable_ir, int, 0644);
MODULE_PARM_DESC(enable_ir, "enable ir (default is enable");
#undef dprintk
#define dprintk(fmt, arg...) \
if (ir_debug) { \
printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
}
struct tm6000_ir_poll_result {
u8 rc_data[4];
};
struct tm6000_IR {
struct tm6000_core *dev;
struct ir_input_dev *input;
struct ir_input_state ir;
char name[32];
char phys[32];
/* poll expernal decoder */
int polling;
struct delayed_work work;
u8 wait:1;
struct urb *int_urb;
u8 *urb_data;
u8 key:1;
int (*get_key) (struct tm6000_IR *, struct tm6000_ir_poll_result *);
/* IR device properties */
struct ir_dev_props props;
};
void tm6000_ir_wait(struct tm6000_core *dev, u8 state)
{
struct tm6000_IR *ir = dev->ir;
if (!dev->ir)
return;
if (state)
ir->wait = 1;
else
ir->wait = 0;
}
static int tm6000_ir_config(struct tm6000_IR *ir)
{
struct tm6000_core *dev = ir->dev;
u8 buf[10];
int rc;
/* hack */
buf[0] = 0xff;
buf[1] = 0xff;
buf[2] = 0xf2;
buf[3] = 0x2b;
buf[4] = 0x20;
buf[5] = 0x35;
buf[6] = 0x60;
buf[7] = 0x04;
buf[8] = 0xc0;
buf[9] = 0x08;
rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_DEVICE, REQ_00_SET_IR_VALUE, 0, 0, buf, 0x0a);
msleep(100);
if (rc < 0) {
printk(KERN_INFO "IR configuration failed");
return rc;
}
return 0;
}
static void tm6000_ir_urb_received(struct urb *urb)
{
struct tm6000_core *dev = urb->context;
struct tm6000_IR *ir = dev->ir;
int rc;
if (urb->status != 0)
printk(KERN_INFO "not ready\n");
else if (urb->actual_length > 0)
memcpy(ir->urb_data, urb->transfer_buffer, urb->actual_length);
dprintk("data %02x %02x %02x %02x\n", ir->urb_data[0],
ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]);
ir->key = 1;
rc = usb_submit_urb(urb, GFP_ATOMIC);
}
static int default_polling_getkey(struct tm6000_IR *ir,
struct tm6000_ir_poll_result *poll_result)
{
struct tm6000_core *dev = ir->dev;
int rc;
u8 buf[2];
if (ir->wait && !&dev->int_in) {
poll_result->rc_data[0] = 0xff;
return 0;
}
if (&dev->int_in) {
poll_result->rc_data[0] = ir->urb_data[0];
poll_result->rc_data[1] = ir->urb_data[1];
} else {
tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
msleep(10);
tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1);
msleep(10);
rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
USB_RECIP_DEVICE, REQ_02_GET_IR_CODE, 0, 0, buf, 1);
msleep(10);
dprintk("read data=%02x\n", buf[0]);
if (rc < 0)
return rc;
poll_result->rc_data[0] = buf[0];
}
return 0;
}
static void tm6000_ir_handle_key(struct tm6000_IR *ir)
{
int result;
struct tm6000_ir_poll_result poll_result;
/* read the registers containing the IR status */
result = ir->get_key(ir, &poll_result);
if (result < 0) {
printk(KERN_INFO "ir->get_key() failed %d\n", result);
return;
}
dprintk("ir->get_key result data=%02x %02x\n",
poll_result.rc_data[0], poll_result.rc_data[1]);
if (poll_result.rc_data[0] != 0xff && ir->key == 1) {
ir_input_keydown(ir->input->input_dev, &ir->ir,
poll_result.rc_data[0] | poll_result.rc_data[1] << 8);
ir_input_nokey(ir->input->input_dev, &ir->ir);
ir->key = 0;
}
return;
}
static void tm6000_ir_work(struct work_struct *work)
{
struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);
tm6000_ir_handle_key(ir);
schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
}
static int tm6000_ir_start(void *priv)
{
struct tm6000_IR *ir = priv;
INIT_DELAYED_WORK(&ir->work, tm6000_ir_work);
schedule_delayed_work(&ir->work, 0);
return 0;
}
static void tm6000_ir_stop(void *priv)
{
struct tm6000_IR *ir = priv;
cancel_delayed_work_sync(&ir->work);
}
int tm6000_ir_change_protocol(void *priv, u64 ir_type)
{
struct tm6000_IR *ir = priv;
ir->get_key = default_polling_getkey;
tm6000_ir_config(ir);
/* TODO */
return 0;
}
int tm6000_ir_init(struct tm6000_core *dev)
{
struct tm6000_IR *ir;
struct ir_input_dev *ir_input_dev;
int err = -ENOMEM;
int pipe, size, rc;
if (!enable_ir)
return -ENODEV;
if (!dev->caps.has_remote)
return 0;
if (!dev->ir_codes)
return 0;
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
ir_input_dev = kzalloc(sizeof(*ir_input_dev), GFP_KERNEL);
ir_input_dev->input_dev = input_allocate_device();
if (!ir || !ir_input_dev || !ir_input_dev->input_dev)
goto err_out_free;
/* record handles to ourself */
ir->dev = dev;
dev->ir = ir;
ir->input = ir_input_dev;
/* input einrichten */
ir->props.allowed_protos = IR_TYPE_RC5 | IR_TYPE_NEC;
ir->props.priv = ir;
ir->props.change_protocol = tm6000_ir_change_protocol;
ir->props.open = tm6000_ir_start;
ir->props.close = tm6000_ir_stop;
ir->props.driver_type = RC_DRIVER_SCANCODE;
ir->polling = 50;
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(ir, IR_TYPE_UNKNOWN);
err = ir_input_init(ir_input_dev->input_dev, &ir->ir, IR_TYPE_OTHER);
if (err < 0)
goto err_out_free;
ir_input_dev->input_dev->name = ir->name;
ir_input_dev->input_dev->phys = ir->phys;
ir_input_dev->input_dev->id.bustype = BUS_USB;
ir_input_dev->input_dev->id.version = 1;
ir_input_dev->input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
ir_input_dev->input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
ir_input_dev->input_dev->dev.parent = &dev->udev->dev;
if (&dev->int_in) {
dprintk("IR over int\n");
ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);
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("IR max size: %d\n", size);
ir->int_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
if (ir->int_urb->transfer_buffer == NULL) {
usb_free_urb(ir->int_urb);
goto err_out_stop;
}
dprintk("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);
rc = usb_submit_urb(ir->int_urb, GFP_KERNEL);
if (rc) {
kfree(ir->int_urb->transfer_buffer);
usb_free_urb(ir->int_urb);
err = rc;
goto err_out_stop;
}
ir->urb_data = kzalloc(size, GFP_KERNEL);
}
/* ir register */
err = ir_input_register(ir->input->input_dev, dev->ir_codes,
&ir->props, "tm6000");
if (err)
goto err_out_stop;
return 0;
err_out_stop:
dev->ir = NULL;
err_out_free:
kfree(ir_input_dev);
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;
ir_input_unregister(ir->input->input_dev);
if (ir->int_urb) {
usb_kill_urb(ir->int_urb);
kfree(ir->int_urb->transfer_buffer);
usb_free_urb(ir->int_urb);
ir->int_urb = NULL;
kfree(ir->urb_data);
ir->urb_data = NULL;
}
kfree(ir->input);
ir->input = NULL;
kfree(ir);
dev->ir = NULL;
return 0;
}