From a65986824d2552dd76786d5a0012989a64c45ab7 Mon Sep 17 00:00:00 2001 From: Gertjan van Wingerde Date: Sun, 8 Nov 2009 12:30:35 +0100 Subject: rt2x00: Add dynamic detection of eFuse EEPROM in rt2800pci. Instead of assuming that all rt3090 devices will have an eFuse EEPROM, do as the legacy Ralink driver, and detect at run-time whether an eFuse EEPROM is present. Signed-off-by: Gertjan van Wingerde Acked-by: Ivo van Doorn Acked-by: Bartlomiej Zolnierkiewicz Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2800pci.c | 22 ++++++++++++++++++---- drivers/net/wireless/rt2x00/rt2800pci.h | 1 + 2 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index bff870799f64..2f284a6f384e 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -145,6 +145,15 @@ static void rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev) EEPROM_SIZE / sizeof(u16)); } +static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev) +{ + u32 reg; + + rt2800_register_read(rt2x00dev, EFUSE_CTRL, ®); + + return rt2x00_get_field32(reg, EFUSE_CTRL_PRESENT); +} + static void rt2800pci_efuse_read(struct rt2x00_dev *rt2x00dev, unsigned int i) { @@ -182,6 +191,11 @@ static inline void rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev) { } +static inline int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev) +{ + return 0; +} + static inline void rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev) { } @@ -1091,11 +1105,11 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev) case RT3052: rt2800pci_read_eeprom_soc(rt2x00dev); break; - case RT3090: - rt2800pci_read_eeprom_efuse(rt2x00dev); - break; default: - rt2800pci_read_eeprom_pci(rt2x00dev); + if (rt2800pci_efuse_detect(rt2x00dev)) + rt2800pci_read_eeprom_efuse(rt2x00dev); + else + rt2800pci_read_eeprom_pci(rt2x00dev); break; } diff --git a/drivers/net/wireless/rt2x00/rt2800pci.h b/drivers/net/wireless/rt2x00/rt2800pci.h index 1dbf13270cda..8f944ee8a970 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.h +++ b/drivers/net/wireless/rt2x00/rt2800pci.h @@ -62,6 +62,7 @@ #define EFUSE_CTRL_ADDRESS_IN FIELD32(0x03fe0000) #define EFUSE_CTRL_MODE FIELD32(0x000000c0) #define EFUSE_CTRL_KICK FIELD32(0x40000000) +#define EFUSE_CTRL_PRESENT FIELD32(0x80000000) /* * EFUSE_DATA0 -- cgit v1.2.3