From 70375ecc452128d855f89e04b31a0961501cc153 Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Thu, 7 Mar 2013 19:22:52 -0300 Subject: [PATCH] [media] af9035: change dual mode boolean to bit field 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 Signed-off-by: Mauro Carvalho Chehab --- 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 2f7d269c7d60..0f42b6cb3708 100644 --- a/drivers/media/usb/dvb-usb-v2/af9035.h +++ b/drivers/media/usb/dvb-usb-v2/af9035.h @@ -59,7 +59,7 @@ 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]; }; @@ -96,6 +96,14 @@ 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 -- 2.34.1