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[media] rc: Hauppauge z8f0811 can decode RC6

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The hardware does not decode the 16, 20 or 24 bit variety.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young
2016-09-19 19:21:23 -03:00
committed by Mauro Carvalho Chehab
parent e998c92d6c
commit 00bb820755
6 changed files with 69 additions and 35 deletions
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90
drivers/media/i2c/ir-kbd-i2c.c
View File

@@ -35,6 +35,7 @@
*
*/
#include <asm/unaligned.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -63,51 +64,80 @@ module_param(debug, int, 0644); /* debug level (0,1,2) */
/* ----------------------------------------------------------------------- */
static int get_key_haup_common(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *ptoggle, int size, int offset)
u32 *scancode, u8 *ptoggle, int size)
{
unsigned char buf[6];
int start, range, toggle, dev, code, ircode;
int start, range, toggle, dev, code, ircode, vendor;
/* poll IR chip */
if (size != i2c_master_recv(ir->c, buf, size))
return -EIO;
/* split rc5 data block ... */
start = (buf[offset] >> 7) & 1;
range = (buf[offset] >> 6) & 1;
toggle = (buf[offset] >> 5) & 1;
dev = buf[offset] & 0x1f;
code = (buf[offset+1] >> 2) & 0x3f;
if (buf[0] & 0x80) {
int offset = (size == 6) ? 3 : 0;
/* rc5 has two start bits
* the first bit must be one
* the second bit defines the command range (1 = 0-63, 0 = 64 - 127)
*/
if (!start)
/* no key pressed */
return 0;
/* split rc5 data block ... */
start = (buf[offset] >> 7) & 1;
range = (buf[offset] >> 6) & 1;
toggle = (buf[offset] >> 5) & 1;
dev = buf[offset] & 0x1f;
code = (buf[offset+1] >> 2) & 0x3f;
/* filter out invalid key presses */
ircode = (start << 12) | (toggle << 11) | (dev << 6) | code;
if ((ircode & 0x1fff) == 0x1fff)
return 0;
/* rc5 has two start bits
* the first bit must be one
* the second bit defines the command range:
* 1 = 0-63, 0 = 64 - 127
*/
if (!start)
/* no key pressed */
return 0;
if (!range)
code += 64;
/* filter out invalid key presses */
ircode = (start << 12) | (toggle << 11) | (dev << 6) | code;
if ((ircode & 0x1fff) == 0x1fff)
return 0;
dprintk(1,"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
start, range, toggle, dev, code);
if (!range)
code += 64;
*protocol = RC_TYPE_RC5;
*scancode = RC_SCANCODE_RC5(dev, code);
*ptoggle = toggle;
return 1;
dprintk(1, "ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
start, range, toggle, dev, code);
*protocol = RC_TYPE_RC5;
*scancode = RC_SCANCODE_RC5(dev, code);
*ptoggle = toggle;
return 1;
} else if (size == 6 && (buf[0] & 0x40)) {
code = buf[4];
dev = buf[3];
vendor = get_unaligned_be16(buf + 1);
if (vendor == 0x800f) {
*ptoggle = (dev & 0x80) != 0;
*protocol = RC_TYPE_RC6_MCE;
dev &= 0x7f;
dprintk(1, "ir hauppauge (rc6-mce): t%d vendor=%d dev=%d code=%d\n",
toggle, vendor, dev, code);
} else {
*ptoggle = 0;
*protocol = RC_TYPE_RC6_6A_32;
dprintk(1, "ir hauppauge (rc6-6a-32): vendor=%d dev=%d code=%d\n",
vendor, dev, code);
}
*scancode = RC_SCANCODE_RC6_6A(vendor, dev, code);
return 1;
}
return 0;
}
static int get_key_haup(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
return get_key_haup_common (ir, protocol, scancode, toggle, 3, 0);
return get_key_haup_common(ir, protocol, scancode, toggle, 3);
}
static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_type *protocol,
@@ -126,7 +156,7 @@ static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_type *protocol,
if (ret != 1)
return (ret < 0) ? ret : -EINVAL;
return get_key_haup_common(ir, protocol, scancode, toggle, 6, 3);
return get_key_haup_common(ir, protocol, scancode, toggle, 6);
}
static int get_key_pixelview(struct IR_i2c *ir, enum rc_type *protocol,
@@ -347,7 +377,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
case 0x71:
name = "Hauppauge/Zilog Z8";
ir->get_key = get_key_haup_xvr;
rc_type = RC_BIT_RC5;
rc_type = RC_BIT_RC5 | RC_BIT_RC6_MCE | RC_BIT_RC6_6A_32;
ir_codes = RC_MAP_HAUPPAUGE;
break;
}