rt2800: rearrange bbp/rfcsr initialization

This makes order of initialization of various registers similar like
on vendor driver.

Based on:
NICInitializeAsic()
RT5592LoadRFNormalModeSetup()

from:
DPO_RT5572_LinuxSTA_2.6.1.3_20121022/common/rtmp_init.c
DPO_RT5572_LinuxSTA_2.6.1.3_20121022/chip/rt5592.c

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: Wanlong Gao <gaowanlong@cn.fujitsu.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 e96ea32..e36cf4a 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -4713,6 +4713,9 @@ static void rt2800_init_rfcsr_5392(struct rt2x00_dev *rt2x00dev)
 
 static void rt2800_init_rfcsr_5592(struct rt2x00_dev *rt2x00dev)
 {
+       u8 reg;
+       u16 eeprom;
+
        rt2800_rfcsr_write(rt2x00dev, 1, 0x3F);
        rt2800_rfcsr_write(rt2x00dev, 3, 0x08);
        rt2800_rfcsr_write(rt2x00dev, 3, 0x08);
@@ -4740,6 +4743,35 @@ static void rt2800_init_rfcsr_5592(struct rt2x00_dev *rt2x00dev)
        msleep(1);
 
        rt2800_adjust_freq_offset(rt2x00dev);
+
+       rt2800_bbp_read(rt2x00dev, 138, &reg);
+
+       /*  Turn off unused DAC1 and ADC1 to reduce power consumption */
+       rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC_CONF0, &eeprom);
+       if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF0_RXPATH) == 1)
+               rt2x00_set_field8(&reg, BBP138_RX_ADC1, 0);
+       if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF0_TXPATH) == 1)
+               rt2x00_set_field8(&reg, BBP138_TX_DAC1, 1);
+
+       rt2800_bbp_write(rt2x00dev, 138, reg);
+
+       /* Enable DC filter */
+       if (rt2x00_rt_rev_gte(rt2x00dev, RT5592, REV_RT5592C))
+               rt2800_bbp_write(rt2x00dev, 103, 0xc0);
+
+       rt2800_rfcsr_read(rt2x00dev, 38, &reg);
+       rt2x00_set_field8(&reg, RFCSR38_RX_LO1_EN, 0);
+       rt2800_rfcsr_write(rt2x00dev, 38, reg);
+
+       rt2800_rfcsr_read(rt2x00dev, 39, &reg);
+       rt2x00_set_field8(&reg, RFCSR39_RX_LO2_EN, 0);
+       rt2800_rfcsr_write(rt2x00dev, 39, reg);
+
+       rt2800_bbp4_mac_if_ctrl(rt2x00dev);
+
+       rt2800_rfcsr_read(rt2x00dev, 30, &reg);
+       rt2x00_set_field8(&reg, RFCSR30_RX_VCM, 2);
+       rt2800_rfcsr_write(rt2x00dev, 30, reg);
 }
 
 static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
@@ -4817,7 +4849,7 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
                break;
        case RT5592:
                rt2800_init_rfcsr_5592(rt2x00dev);
-               break;
+               return 0;
        }
 
        if (rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070F)) {
@@ -5024,15 +5056,23 @@ int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev)
         * Initialize all registers.
         */
        if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev) ||
-                    rt2800_init_registers(rt2x00dev) ||
-                    rt2800_init_bbp(rt2x00dev) ||
-                    rt2800_init_rfcsr(rt2x00dev)))
+                    rt2800_init_registers(rt2x00dev)))
                return -EIO;
 
        /*
         * Send signal to firmware during boot time.
         */
-       rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0, 0, 0);
+       rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
+       rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
+       if (rt2x00_is_usb(rt2x00dev)) {
+               rt2800_register_write(rt2x00dev, H2M_INT_SRC, 0);
+               rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0, 0, 0);
+       }
+       msleep(1);
+
+       if (unlikely(rt2800_init_bbp(rt2x00dev) ||
+                    rt2800_init_rfcsr(rt2x00dev)))
+               return -EIO;
 
        if (rt2x00_is_usb(rt2x00dev) &&
            (rt2x00_rt(rt2x00dev, RT3070) ||