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path: root/drivers/media/video/ir-kbd-i2c.c
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Diffstat (limited to 'drivers/media/video/ir-kbd-i2c.c')
-rw-r--r--drivers/media/video/ir-kbd-i2c.c84
1 files changed, 69 insertions, 15 deletions
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index d4658c56eddc..092c7da0f37a 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -16,6 +16,8 @@
* Henry Wong <henry@stuffedcow.net>
* Mark Schultz <n9xmj@yahoo.com>
* Brian Rogers <brian_rogers@comcast.net>
+ * modified for AVerMedia Cardbus by
+ * Oldrich Jedlicka <oldium.pro@seznam.cz>
*
* 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
@@ -216,6 +218,46 @@ static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
return 1;
}
+static int get_key_avermedia_cardbus(struct IR_i2c *ir,
+ u32 *ir_key, u32 *ir_raw)
+{
+ unsigned char subaddr, key, keygroup;
+ struct i2c_msg msg[] = { { .addr = ir->c.addr, .flags = 0,
+ .buf = &subaddr, .len = 1},
+ { .addr = ir->c.addr, .flags = I2C_M_RD,
+ .buf = &key, .len = 1} };
+ subaddr = 0x0d;
+ if (2 != i2c_transfer(ir->c.adapter, msg, 2)) {
+ dprintk(1, "read error\n");
+ return -EIO;
+ }
+
+ if (key == 0xff)
+ return 0;
+
+ subaddr = 0x0b;
+ msg[1].buf = &keygroup;
+ if (2 != i2c_transfer(ir->c.adapter, msg, 2)) {
+ dprintk(1, "read error\n");
+ return -EIO;
+ }
+
+ if (keygroup == 0xff)
+ return 0;
+
+ dprintk(1, "read key 0x%02x/0x%02x\n", key, keygroup);
+ if (keygroup < 2 || keygroup > 3) {
+ /* Only a warning */
+ dprintk(1, "warning: invalid key group 0x%02x for key 0x%02x\n",
+ keygroup, key);
+ }
+ key |= (keygroup & 1) << 6;
+
+ *ir_key = key;
+ *ir_raw = key;
+ return 1;
+}
+
/* ----------------------------------------------------------------------- */
static void ir_key_poll(struct IR_i2c *ir)
@@ -237,15 +279,9 @@ static void ir_key_poll(struct IR_i2c *ir)
}
}
-static void ir_timer(unsigned long data)
-{
- struct IR_i2c *ir = (struct IR_i2c*)data;
- schedule_work(&ir->work);
-}
-
static void ir_work(struct work_struct *work)
{
- struct IR_i2c *ir = container_of(work, struct IR_i2c, work);
+ struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work);
int polling_interval = 100;
/* MSI TV@nywhere Plus requires more frequent polling
@@ -254,7 +290,7 @@ static void ir_work(struct work_struct *work)
polling_interval = 50;
ir_key_poll(ir);
- mod_timer(&ir->timer, jiffies + msecs_to_jiffies(polling_interval));
+ schedule_delayed_work(&ir->work, msecs_to_jiffies(polling_interval));
}
/* ----------------------------------------------------------------------- */
@@ -360,6 +396,12 @@ static int ir_attach(struct i2c_adapter *adap, int addr,
ir_type = IR_TYPE_OTHER;
}
break;
+ case 0x40:
+ name = "AVerMedia Cardbus remote";
+ ir->get_key = get_key_avermedia_cardbus;
+ ir_type = IR_TYPE_OTHER;
+ ir_codes = ir_codes_avermedia_cardbus;
+ break;
default:
/* shouldn't happen */
printk(DEVNAME ": Huh? unknown i2c address (0x%02x)?\n", addr);
@@ -404,11 +446,8 @@ static int ir_attach(struct i2c_adapter *adap, int addr,
ir->input->name, ir->input->phys, adap->name);
/* start polling via eventd */
- INIT_WORK(&ir->work, ir_work);
- init_timer(&ir->timer);
- ir->timer.function = ir_timer;
- ir->timer.data = (unsigned long)ir;
- schedule_work(&ir->work);
+ INIT_DELAYED_WORK(&ir->work, ir_work);
+ schedule_delayed_work(&ir->work, 0);
return 0;
@@ -425,8 +464,7 @@ static int ir_detach(struct i2c_client *client)
struct IR_i2c *ir = i2c_get_clientdata(client);
/* kill outstanding polls */
- del_timer_sync(&ir->timer);
- flush_scheduled_work();
+ cancel_delayed_work_sync(&ir->work);
/* unregister devices */
input_unregister_device(ir->input);
@@ -524,6 +562,22 @@ static int ir_probe(struct i2c_adapter *adap)
ir_attach(adap, msg.addr, 0, 0);
}
+ /* Special case for AVerMedia Cardbus remote */
+ if (adap->id == I2C_HW_SAA7134) {
+ unsigned char subaddr, data;
+ struct i2c_msg msg[] = { { .addr = 0x40, .flags = 0,
+ .buf = &subaddr, .len = 1},
+ { .addr = 0x40, .flags = I2C_M_RD,
+ .buf = &data, .len = 1} };
+ subaddr = 0x0d;
+ rc = i2c_transfer(adap, msg, 2);
+ dprintk(1, "probe 0x%02x/0x%02x @ %s: %s\n",
+ msg[0].addr, subaddr, adap->name,
+ (2 == rc) ? "yes" : "no");
+ if (2 == rc)
+ ir_attach(adap, msg[0].addr, 0, 0);
+ }
+
return 0;
}