For some reason there seems to be value 0x03 in eeprom for dual mode
(and 0x00 for single mode). Boolean is not always 1 bit wide - it
could be 8 bit wide too. Storing number 0x03 to boolean causes driver
to thing there is 4 tuners in some cases :o
Add also some comments regarding to eeprom.
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/media/usb/dvb-usb-v2/af9035.h | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/media/usb/dvb-usb-v2/af9035.h
b/drivers/media/usb/dvb-usb-v2/af9035.h
index 59843c7..d934a18 100644
--- a/drivers/media/usb/dvb-usb-v2/af9035.h
+++ b/drivers/media/usb/dvb-usb-v2/af9035.h
@@ -57,7 +57,7 @@ struct state {
u8 prechip_version;
u8 chip_version;
u16 chip_type;
- bool dual_mode;
+ u8 dual_mode:1;
u16 eeprom_addr;
struct af9033_config af9033_config[2];
};
@@ -94,6 +94,14 @@ static const u32 clock_lut_it9135[] = {
#define AF9035_FIRMWARE_IT9135_V1 "dvb-usb-it9135-01.fw"
#define AF9035_FIRMWARE_IT9135_V2 "dvb-usb-it9135-02.fw"
+/*
+ * eeprom is memory mapped as read only. Writing that memory mapped address
+ * will not corrupt eeprom.
+ *
+ * eeprom has value 0x00 single mode and 0x03 for dual mode as far as I have
+ * seen to this day.
+ */
+
#define EEPROM_BASE_AF9035 0x42fd
#define EEPROM_BASE_IT9135 0x499c
#define EEPROM_SHIFT 0x10
--
1.7.11.7
--
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