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/*
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/delay.h>
#include "mt76x2u.h"
#include "eeprom.h"
#include "../mt76x02_phy.h"
#include "../mt76x02_usb.h"
static void mt76x2u_init_dma(struct mt76x02_dev *dev)
{
u32 val = mt76_rr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG));
val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD |
MT_USB_DMA_CFG_RX_BULK_EN |
MT_USB_DMA_CFG_TX_BULK_EN;
/* disable AGGR_BULK_RX in order to receive one
* frame in each rx urb and avoid copies
*/
val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN;
mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
}
static void mt76x2u_power_on_rf_patch(struct mt76x02_dev *dev)
{
mt76_set(dev, MT_VEND_ADDR(CFG, 0x130), BIT(0) | BIT(16));
udelay(1);
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x1c), 0xff);
mt76_set(dev, MT_VEND_ADDR(CFG, 0x1c), 0x30);
mt76_wr(dev, MT_VEND_ADDR(CFG, 0x14), 0x484f);
udelay(1);
mt76_set(dev, MT_VEND_ADDR(CFG, 0x130), BIT(17));
usleep_range(150, 200);
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x130), BIT(16));
usleep_range(50, 100);
mt76_set(dev, MT_VEND_ADDR(CFG, 0x14c), BIT(19) | BIT(20));
}
static void mt76x2u_power_on_rf(struct mt76x02_dev *dev, int unit)
{
int shift = unit ? 8 : 0;
u32 val = (BIT(1) | BIT(3) | BIT(4) | BIT(5)) << shift;
/* Enable RF BG */
mt76_set(dev, MT_VEND_ADDR(CFG, 0x130), BIT(0) << shift);
usleep_range(10, 20);
/* Enable RFDIG LDO/AFE/ABB/ADDA */
mt76_set(dev, MT_VEND_ADDR(CFG, 0x130), val);
usleep_range(10, 20);
/* Switch RFDIG power to internal LDO */
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x130), BIT(2) << shift);
usleep_range(10, 20);
mt76x2u_power_on_rf_patch(dev);
mt76_set(dev, 0x530, 0xf);
}
static void mt76x2u_power_on(struct mt76x02_dev *dev)
{
u32 val;
/* Turn on WL MTCMOS */
mt76_set(dev, MT_VEND_ADDR(CFG, 0x148),
MT_WLAN_MTC_CTRL_MTCMOS_PWR_UP);
val = MT_WLAN_MTC_CTRL_STATE_UP |
MT_WLAN_MTC_CTRL_PWR_ACK |
MT_WLAN_MTC_CTRL_PWR_ACK_S;
mt76_poll(dev, MT_VEND_ADDR(CFG, 0x148), val, val, 1000);
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x148), 0x7f << 16);
usleep_range(10, 20);
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x148), 0xf << 24);
usleep_range(10, 20);
mt76_set(dev, MT_VEND_ADDR(CFG, 0x148), 0xf << 24);
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x148), 0xfff);
/* Turn on AD/DA power down */
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x1204), BIT(3));
/* WLAN function enable */
mt76_set(dev, MT_VEND_ADDR(CFG, 0x80), BIT(0));
/* Release BBP software reset */
mt76_clear(dev, MT_VEND_ADDR(CFG, 0x64), BIT(18));
mt76x2u_power_on_rf(dev, 0);
mt76x2u_power_on_rf(dev, 1);
}
static int mt76x2u_init_eeprom(struct mt76x02_dev *dev)
{
u32 val, i;
dev->mt76.eeprom.data = devm_kzalloc(dev->mt76.dev,
MT7612U_EEPROM_SIZE,
GFP_KERNEL);
dev->mt76.eeprom.size = MT7612U_EEPROM_SIZE;
if (!dev->mt76.eeprom.data)
return -ENOMEM;
for (i = 0; i + 4 <= MT7612U_EEPROM_SIZE; i += 4) {
val = mt76_rr(dev, MT_VEND_ADDR(EEPROM, i));
put_unaligned_le32(val, dev->mt76.eeprom.data + i);
}
mt76x02_eeprom_parse_hw_cap(dev);
return 0;
}
int mt76x2u_init_hardware(struct mt76x02_dev *dev)
{
int i, k, err;
mt76x2_reset_wlan(dev, true);
mt76x2u_power_on(dev);
if (!mt76x02_wait_for_mac(&dev->mt76))
return -ETIMEDOUT;
err = mt76x2u_mcu_fw_init(dev);
if (err < 0)
return err;
if (!mt76_poll_msec(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 100))
return -EIO;
/* wait for asic ready after fw load. */
if (!mt76x02_wait_for_mac(&dev->mt76))
return -ETIMEDOUT;
mt76x2u_init_dma(dev);
err = mt76x2u_mcu_init(dev);
if (err < 0)
return err;
err = mt76x2u_mac_reset(dev);
if (err < 0)
return err;
mt76x02_mac_setaddr(dev, dev->mt76.eeprom.data + MT_EE_MAC_ADDR);
dev->mt76.rxfilter = mt76_rr(dev, MT_RX_FILTR_CFG);
if (!mt76x02_wait_for_txrx_idle(&dev->mt76))
return -ETIMEDOUT;
/* reset wcid table */
for (i = 0; i < 256; i++)
mt76x02_mac_wcid_setup(dev, i, 0, NULL);
/* reset shared key table and pairwise key table */
for (i = 0; i < 16; i++) {
for (k = 0; k < 4; k++)
mt76x02_mac_shared_key_setup(dev, i, k, NULL);
}
mt76x02u_init_beacon_config(dev);
mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
mt76_wr(dev, MT_TXOP_CTRL_CFG, 0x583f);
err = mt76x2_mcu_load_cr(dev, MT_RF_BBP_CR, 0, 0);
if (err < 0)
return err;
mt76x02_phy_set_rxpath(dev);
mt76x02_phy_set_txdac(dev);
return mt76x2u_mac_stop(dev);
}
int mt76x2u_register_device(struct mt76x02_dev *dev)
{
struct ieee80211_hw *hw = mt76_hw(dev);
int err;
INIT_DELAYED_WORK(&dev->cal_work, mt76x2u_phy_calibrate);
mt76x02_init_device(dev);
err = mt76x2u_init_eeprom(dev);
if (err < 0)
return err;
err = mt76u_alloc_queues(&dev->mt76);
if (err < 0)
goto fail;
err = mt76x2u_init_hardware(dev);
if (err < 0)
goto fail;
err = mt76_register_device(&dev->mt76, true, mt76x02_rates,
ARRAY_SIZE(mt76x02_rates));
if (err)
goto fail;
/* check hw sg support in order to enable AMSDU */
if (dev->mt76.usb.sg_en)
hw->max_tx_fragments = MT_TX_SG_MAX_SIZE;
else
hw->max_tx_fragments = 1;
set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
mt76x02_init_debugfs(dev);
mt76x2_init_txpower(dev, &dev->mt76.sband_2g.sband);
mt76x2_init_txpower(dev, &dev->mt76.sband_5g.sband);
return 0;
fail:
mt76x2u_cleanup(dev);
return err;
}
void mt76x2u_stop_hw(struct mt76x02_dev *dev)
{
cancel_delayed_work_sync(&dev->cal_work);
cancel_delayed_work_sync(&dev->mt76.mac_work);
mt76x2u_mac_stop(dev);
}
void mt76x2u_cleanup(struct mt76x02_dev *dev)
{
mt76x02_mcu_set_radio_state(dev, false);
mt76x2u_stop_hw(dev);
mt76u_queues_deinit(&dev->mt76);
}
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