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authorMauro Carvalho Chehab <mchehab@redhat.com>2009-12-14 02:54:22 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-02-26 15:10:23 -0300
commit950b0f5a0bf764663a6aa4397d105ad571c64a83 (patch)
tree74dcfdfc52a7594c300dc63ffbf42744a8ef715c /drivers/media/video/em28xx/em28xx-input.c
parent09b01b90eb08769a64159ff4f81efe4badf6a49b (diff)
V4L/DVB (13637): em28xx: allow changing keycode table protocol
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>
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-input.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-input.c80
1 files changed, 54 insertions, 26 deletions
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
index fbfbab6841c..ebb75a867f0 100644
--- a/drivers/media/video/em28xx/em28xx-input.c
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -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;