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// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*/
#include "mt76x2u.h"
#include "eeprom.h"
static void mt76x2u_mac_fixup_xtal(struct mt76x02_dev *dev)
{
s8 offset = 0;
u16 eep_val;
eep_val = mt76x02_eeprom_get(dev, MT_EE_XTAL_TRIM_2);
offset = eep_val & 0x7f;
if ((eep_val & 0xff) == 0xff)
offset = 0;
else if (eep_val & 0x80)
offset = 0 - offset;
eep_val >>= 8;
if (eep_val == 0x00 || eep_val == 0xff) {
eep_val = mt76x02_eeprom_get(dev, MT_EE_XTAL_TRIM_1);
eep_val &= 0xff;
if (eep_val == 0x00 || eep_val == 0xff)
eep_val = 0x14;
}
eep_val &= 0x7f;
mt76_rmw_field(dev, MT_VEND_ADDR(CFG, MT_XO_CTRL5),
MT_XO_CTRL5_C2_VAL, eep_val + offset);
mt76_set(dev, MT_VEND_ADDR(CFG, MT_XO_CTRL6), MT_XO_CTRL6_C2_CTRL);
mt76_wr(dev, 0x504, 0x06000000);
mt76_wr(dev, 0x50c, 0x08800000);
mdelay(5);
mt76_wr(dev, 0x504, 0x0);
/* decrease SIFS from 16us to 13us */
mt76_rmw_field(dev, MT_XIFS_TIME_CFG,
MT_XIFS_TIME_CFG_OFDM_SIFS, 0xd);
mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG, MT_BKOFF_SLOT_CFG_CC_DELAY, 1);
/* init fce */
mt76_clear(dev, MT_FCE_L2_STUFF, MT_FCE_L2_STUFF_WR_MPDU_LEN_EN);
eep_val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_2);
switch (FIELD_GET(MT_EE_NIC_CONF_2_XTAL_OPTION, eep_val)) {
case 0:
mt76_wr(dev, MT_XO_CTRL7, 0x5c1fee80);
break;
case 1:
mt76_wr(dev, MT_XO_CTRL7, 0x5c1feed0);
break;
default:
break;
}
}
int mt76x2u_mac_reset(struct mt76x02_dev *dev)
{
mt76_wr(dev, MT_WPDMA_GLO_CFG, BIT(4) | BIT(5));
/* init pbf regs */
mt76_wr(dev, MT_PBF_TX_MAX_PCNT, 0xefef3f1f);
mt76_wr(dev, MT_PBF_RX_MAX_PCNT, 0xfebf);
mt76_write_mac_initvals(dev);
mt76_wr(dev, MT_TX_LINK_CFG, 0x1020);
mt76_wr(dev, MT_AUTO_RSP_CFG, 0x13);
mt76_wr(dev, MT_MAX_LEN_CFG, 0x2f00);
mt76_wr(dev, MT_WMM_AIFSN, 0x2273);
mt76_wr(dev, MT_WMM_CWMIN, 0x2344);
mt76_wr(dev, MT_WMM_CWMAX, 0x34aa);
mt76_clear(dev, MT_MAC_SYS_CTRL,
MT_MAC_SYS_CTRL_RESET_CSR |
MT_MAC_SYS_CTRL_RESET_BBP);
if (is_mt7612(dev))
mt76_clear(dev, MT_COEXCFG0, MT_COEXCFG0_COEX_EN);
mt76_set(dev, MT_EXT_CCA_CFG, 0xf000);
mt76_clear(dev, MT_TX_ALC_CFG_4, BIT(31));
mt76x2u_mac_fixup_xtal(dev);
return 0;
}
int mt76x2u_mac_stop(struct mt76x02_dev *dev)
{
int i, count = 0, val;
bool stopped = false;
u32 rts_cfg;
if (test_bit(MT76_REMOVED, &dev->mt76.state))
return -EIO;
rts_cfg = mt76_rr(dev, MT_TX_RTS_CFG);
mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg & ~MT_TX_RTS_CFG_RETRY_LIMIT);
mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);
mt76_clear(dev, MT_TXOP_HLDR_ET, MT_TXOP_HLDR_TX40M_BLK_EN);
/* wait tx dma to stop */
for (i = 0; i < 2000; i++) {
val = mt76_rr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG));
if (!(val & MT_USB_DMA_CFG_TX_BUSY) && i > 10)
break;
usleep_range(50, 100);
}
/* page count on TxQ */
for (i = 0; i < 200; i++) {
if (!(mt76_rr(dev, 0x0438) & 0xffffffff) &&
!(mt76_rr(dev, 0x0a30) & 0x000000ff) &&
!(mt76_rr(dev, 0x0a34) & 0xff00ff00))
break;
usleep_range(10, 20);
}
/* disable tx-rx */
mt76_clear(dev, MT_MAC_SYS_CTRL,
MT_MAC_SYS_CTRL_ENABLE_RX |
MT_MAC_SYS_CTRL_ENABLE_TX);
/* Wait for MAC to become idle */
for (i = 0; i < 1000; i++) {
if (!(mt76_rr(dev, MT_MAC_STATUS) & MT_MAC_STATUS_TX) &&
!mt76_rr(dev, MT_BBP(IBI, 12))) {
stopped = true;
break;
}
usleep_range(10, 20);
}
if (!stopped) {
mt76_set(dev, MT_BBP(CORE, 4), BIT(1));
mt76_clear(dev, MT_BBP(CORE, 4), BIT(1));
mt76_set(dev, MT_BBP(CORE, 4), BIT(0));
mt76_clear(dev, MT_BBP(CORE, 4), BIT(0));
}
/* page count on RxQ */
for (i = 0; i < 200; i++) {
if (!(mt76_rr(dev, 0x0430) & 0x00ff0000) &&
!(mt76_rr(dev, 0x0a30) & 0xffffffff) &&
!(mt76_rr(dev, 0x0a34) & 0xffffffff) &&
++count > 10)
break;
msleep(50);
}
if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_RX, 0, 2000))
dev_warn(dev->mt76.dev, "MAC RX failed to stop\n");
/* wait rx dma to stop */
for (i = 0; i < 2000; i++) {
val = mt76_rr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG));
if (!(val & MT_USB_DMA_CFG_RX_BUSY) && i > 10)
break;
usleep_range(50, 100);
}
mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg);
return 0;
}
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