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V4L/DVB (13637): em28xx: allow changing keycode table protocol

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Experimental patch to allow changing the IR protocol. Currently, it support
changing between RC-5 and NEC protocols.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-12-14 02:54:22 -03:00
parent 09b01b90eb
commit 950b0f5a0b
1 changed files with 54 additions and 26 deletions
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80
drivers/media/video/em28xx/em28xx-input.c
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@ -75,6 +75,10 @@ struct em28xx_IR {
unsigned int repeat_interval;
int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *);
/* IR device properties */
struct ir_dev_props props;
};
/**********************************************************
@ -336,35 +340,25 @@ static void em28xx_ir_stop(struct em28xx_IR *ir)
cancel_delayed_work_sync(&ir->work);
}
int em28xx_ir_init(struct em28xx *dev)
int em28xx_ir_change_protocol(void *priv, enum ir_type ir_type)
{
struct em28xx_IR *ir;
struct input_dev *input_dev;
u8 ir_config;
int err = -ENOMEM;
if (dev->board.ir_codes == NULL) {
/* No remote control support */
return 0;
}
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
input_dev = input_allocate_device();
if (!ir || !input_dev)
goto err_out_free;
ir->input = input_dev;
ir_config = EM2874_IR_RC5;
int rc = 0;
struct em28xx_IR *ir = priv;
struct em28xx *dev = ir->dev;
u8 ir_config = EM2874_IR_RC5;
/* Adjust xclk based o IR table for RC5/NEC tables */
if (dev->board.ir_codes->ir_type == IR_TYPE_RC5) {
if (ir_type == IR_TYPE_RC5) {
dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
ir->full_code = 1;
} else if (dev->board.ir_codes->ir_type == IR_TYPE_NEC) {
} else if (ir_type == IR_TYPE_NEC) {
dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
ir_config = EM2874_IR_NEC;
ir->full_code = 1;
}
} else
rc = -EINVAL;
em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
EM28XX_XCLK_IR_RC5_MODE);
@ -380,9 +374,42 @@ int em28xx_ir_init(struct em28xx *dev)
break;
default:
printk("Unrecognized em28xx chip id: IR not supported\n");
goto err_out_free;
rc = -EINVAL;
}
return rc;
}
int em28xx_ir_init(struct em28xx *dev)
{
struct em28xx_IR *ir;
struct input_dev *input_dev;
int err = -ENOMEM;
if (dev->board.ir_codes == NULL) {
/* No remote control support */
return 0;
}
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
input_dev = input_allocate_device();
if (!ir || !input_dev)
goto err_out_free;
/* record handles to ourself */
ir->dev = dev;
dev->ir = ir;
ir->input = input_dev;
/*
* em2874 supports more protocols. For now, let's just announce
* the two protocols that were already tested
*/
ir->props.allowed_protos = IR_TYPE_RC5 | IR_TYPE_NEC;
ir->props.priv = ir;
ir->props.change_protocol = em28xx_ir_change_protocol;
/* This is how often we ask the chip for IR information */
ir->polling = 100; /* ms */
@ -393,6 +420,8 @@ int em28xx_ir_init(struct em28xx *dev)
usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
strlcat(ir->phys, "/input0", sizeof(ir->phys));
/* Set IR protocol */
em28xx_ir_change_protocol(ir, dev->board.ir_codes->ir_type);
err = ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER);
if (err < 0)
goto err_out_free;
@ -405,14 +434,13 @@ int em28xx_ir_init(struct em28xx *dev)
input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
input_dev->dev.parent = &dev->udev->dev;
/* record handles to ourself */
ir->dev = dev;
dev->ir = ir;
em28xx_ir_start(ir);
/* all done */
err = ir_input_register(ir->input, dev->board.ir_codes, NULL);
err = ir_input_register(ir->input, dev->board.ir_codes,
&ir->props);
if (err)
goto err_out_stop;