rt2800: unify EEPROM support code
Add rt2800_validate_eeprom() and rt2800_init_eeprom() to rt2800lib.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 5c7d74a..2c21119 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1659,6 +1659,205 @@
}
EXPORT_SYMBOL_GPL(rt2800_init_rfcsr);
+int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev)
+{
+ u16 word;
+ u8 *mac;
+ u8 default_lna_gain;
+
+ /*
+ * Start validation of the data that has been read.
+ */
+ mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
+ if (!is_valid_ether_addr(mac)) {
+ random_ether_addr(mac);
+ EEPROM(rt2x00dev, "MAC: %pM\n", mac);
+ }
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
+ if (word == 0xffff) {
+ rt2x00_set_field16(&word, EEPROM_ANTENNA_RXPATH, 2);
+ rt2x00_set_field16(&word, EEPROM_ANTENNA_TXPATH, 1);
+ rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2820);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
+ EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
+ } else if (rt2x00_rev(&rt2x00dev->chip) < RT2883_VERSION) {
+ /*
+ * There is a max of 2 RX streams for RT28x0 series
+ */
+ if (rt2x00_get_field16(word, EEPROM_ANTENNA_RXPATH) > 2)
+ rt2x00_set_field16(&word, EEPROM_ANTENNA_RXPATH, 2);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
+ }
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
+ if (word == 0xffff) {
+ rt2x00_set_field16(&word, EEPROM_NIC_HW_RADIO, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_DYNAMIC_TX_AGC, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA_BG, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA_A, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_BW40M_SB_BG, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_BW40M_SB_A, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_WPS_PBC, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_BW40M_BG, 0);
+ rt2x00_set_field16(&word, EEPROM_NIC_BW40M_A, 0);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
+ EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
+ }
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &word);
+ if ((word & 0x00ff) == 0x00ff) {
+ rt2x00_set_field16(&word, EEPROM_FREQ_OFFSET, 0);
+ rt2x00_set_field16(&word, EEPROM_FREQ_LED_MODE,
+ LED_MODE_TXRX_ACTIVITY);
+ rt2x00_set_field16(&word, EEPROM_FREQ_LED_POLARITY, 0);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_FREQ, word);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_LED1, 0x5555);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_LED2, 0x2221);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_LED3, 0xa9f8);
+ EEPROM(rt2x00dev, "Freq: 0x%04x\n", word);
+ }
+
+ /*
+ * During the LNA validation we are going to use
+ * lna0 as correct value. Note that EEPROM_LNA
+ * is never validated.
+ */
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_LNA, &word);
+ default_lna_gain = rt2x00_get_field16(word, EEPROM_LNA_A0);
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG, &word);
+ if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG_OFFSET0)) > 10)
+ rt2x00_set_field16(&word, EEPROM_RSSI_BG_OFFSET0, 0);
+ if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG_OFFSET1)) > 10)
+ rt2x00_set_field16(&word, EEPROM_RSSI_BG_OFFSET1, 0);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_BG, word);
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &word);
+ if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG2_OFFSET2)) > 10)
+ rt2x00_set_field16(&word, EEPROM_RSSI_BG2_OFFSET2, 0);
+ if (rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0x00 ||
+ rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0xff)
+ rt2x00_set_field16(&word, EEPROM_RSSI_BG2_LNA_A1,
+ default_lna_gain);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_BG2, word);
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A, &word);
+ if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A_OFFSET0)) > 10)
+ rt2x00_set_field16(&word, EEPROM_RSSI_A_OFFSET0, 0);
+ if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A_OFFSET1)) > 10)
+ rt2x00_set_field16(&word, EEPROM_RSSI_A_OFFSET1, 0);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_A, word);
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &word);
+ if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A2_OFFSET2)) > 10)
+ rt2x00_set_field16(&word, EEPROM_RSSI_A2_OFFSET2, 0);
+ if (rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0x00 ||
+ rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0xff)
+ rt2x00_set_field16(&word, EEPROM_RSSI_A2_LNA_A2,
+ default_lna_gain);
+ rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_A2, word);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rt2800_validate_eeprom);
+
+int rt2800_init_eeprom(struct rt2x00_dev *rt2x00dev)
+{
+ u32 reg;
+ u16 value;
+ u16 eeprom;
+
+ /*
+ * Read EEPROM word for configuration.
+ */
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
+
+ /*
+ * Identify RF chipset.
+ */
+ value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
+ rt2800_register_read(rt2x00dev, MAC_CSR0, ®);
+
+ if (rt2x00_intf_is_usb(rt2x00dev)) {
+ struct rt2x00_chip *chip = &rt2x00dev->chip;
+
+ rt2x00_set_chip(rt2x00dev, RT2870, value, reg);
+
+ /*
+ * The check for rt2860 is not a typo, some rt2870 hardware
+ * identifies itself as rt2860 in the CSR register.
+ */
+ if (!rt2x00_check_rev(chip, 0xfff00000, 0x28600000) &&
+ !rt2x00_check_rev(chip, 0xfff00000, 0x28700000) &&
+ !rt2x00_check_rev(chip, 0xfff00000, 0x28800000) &&
+ !rt2x00_check_rev(chip, 0xffff0000, 0x30700000)) {
+ ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
+ return -ENODEV;
+ }
+ } else if (rt2x00_intf_is_pci(rt2x00dev))
+ rt2x00_set_chip_rf(rt2x00dev, value, reg);
+
+ if (!rt2x00_rf(&rt2x00dev->chip, RF2820) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF2850) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF2720) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF2750) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF3020) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF2020) &&
+ (rt2x00_intf_is_usb(rt2x00dev) ||
+ (rt2x00_intf_is_pci(rt2x00dev) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF3021) &&
+ !rt2x00_rf(&rt2x00dev->chip, RF3022)))) {
+ ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
+ return -ENODEV;
+ }
+
+ /*
+ * Identify default antenna configuration.
+ */
+ rt2x00dev->default_ant.tx =
+ rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH);
+ rt2x00dev->default_ant.rx =
+ rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH);
+
+ /*
+ * Read frequency offset and RF programming sequence.
+ */
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
+ rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
+
+ /*
+ * Read external LNA informations.
+ */
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
+
+ if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA_A))
+ __set_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
+ if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA_BG))
+ __set_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
+
+ /*
+ * Detect if this device has an hardware controlled radio.
+ */
+ if (rt2x00_get_field16(eeprom, EEPROM_NIC_HW_RADIO))
+ __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
+
+ /*
+ * Store led settings, for correct led behaviour.
+ */
+#ifdef CONFIG_RT2X00_LIB_LEDS
+ rt2800_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
+ rt2800_init_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC);
+ rt2800_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_QUALITY);
+
+ rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &rt2x00dev->led_mcu_reg);
+#endif /* CONFIG_RT2X00_LIB_LEDS */
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rt2800_init_eeprom);
+
/*
* IEEE80211 stack callback functions.
*/