This patch does correct radio chip autodetection to avoid misdetecting
mt20xx microtune as tea5767 chip.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
linux/drivers/media/video/tea5767.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)
linux/drivers/media/video/tea5767.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)
diff -u linux-2.6.13/drivers/media/video/tea5767.c linux/drivers/media/video/tea5767.c
--- linux-2.6.13/drivers/media/video/tea5767.c 2005-07-28 19:44:44.000000000 -0300
+++ linux/drivers/media/video/tea5767.c 2005-08-01 08:57:59.000000000 -0300
@@ -2,7 +2,7 @@
* For Philips TEA5767 FM Chip used on some TV Cards like Prolink Pixelview
* I2C address is allways 0xC0.
*
- * $Id: tea5767.c,v 1.21 2005/07/14 03:06:43 mchehab Exp $
+ * $Id: tea5767.c,v 1.27 2005/07/31 12:10:56 mchehab Exp $
*
* Copyright (c) 2005 Mauro Carvalho Chehab ([email protected])
* This code is placed under the terms of the GNU General Public License
@@ -15,7 +15,6 @@
#include <linux/videodev.h>
#include <linux/delay.h>
#include <media/tuner.h>
-#include <media/tuner.h>
#define PREFIX "TEA5767 "
@@ -293,16 +292,16 @@
int tea5767_autodetection(struct i2c_client *c)
{
- unsigned char buffer[5] = { 0xff, 0xff, 0xff, 0xff, 0xff };
+ unsigned char buffer[7] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
int rc;
struct tuner *t = i2c_get_clientdata(c);
- if (5 != (rc = i2c_master_recv(c, buffer, 5))) {
+ if (7 != (rc = i2c_master_recv(c, buffer, 7))) {
tuner_warn("It is not a TEA5767. Received %i bytes.\n", rc);
return EINVAL;
}
- /* If all bytes are the same then it's a TV tuner and not a tea5767 chip. */
+ /* If all bytes are the same then it's a TV tuner and not a tea5767 */
if (buffer[0] == buffer[1] && buffer[0] == buffer[2] &&
buffer[0] == buffer[3] && buffer[0] == buffer[4]) {
tuner_warn("All bytes are equal. It is not a TEA5767\n");
@@ -319,6 +318,12 @@
return EINVAL;
}
+ /* It seems that tea5767 returns 0xff after the 5th byte */
+ if ((buffer[5] != 0xff) || (buffer[6] != 0xff)) {
+ tuner_warn("Returned more than 5 bytes. It is not a TEA5767\n");
+ return EINVAL;
+ }
+
tuner_warn("TEA5767 detected.\n");
return 0;
}
@@ -327,9 +332,6 @@
{
struct tuner *t = i2c_get_clientdata(c);
- if (tea5767_autodetection(c) == EINVAL)
- return EINVAL;
-
tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5767HN FM Radio");
strlcpy(c->name, "tea5767", sizeof(c->name));
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