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/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
* 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/kernel.h>
#include "mt76.h"
#include "mt76x02_dma.h"
#include "mt76x02_regs.h"
void mt76x02_dma_enable(struct mt76_dev *dev)
{
u32 val;
__mt76_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_TX);
mt76x02_wait_for_wpdma(dev, 1000);
usleep_range(50, 100);
val = FIELD_PREP(MT_WPDMA_GLO_CFG_DMA_BURST_SIZE, 3) |
MT_WPDMA_GLO_CFG_TX_DMA_EN |
MT_WPDMA_GLO_CFG_RX_DMA_EN;
__mt76_set(dev, MT_WPDMA_GLO_CFG, val);
__mt76_clear(dev, MT_WPDMA_GLO_CFG,
MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
}
EXPORT_SYMBOL_GPL(mt76x02_dma_enable);
void mt76x02_dma_disable(struct mt76_dev *dev)
{
u32 val = __mt76_rr(dev, MT_WPDMA_GLO_CFG);
val &= MT_WPDMA_GLO_CFG_DMA_BURST_SIZE |
MT_WPDMA_GLO_CFG_BIG_ENDIAN |
MT_WPDMA_GLO_CFG_HDR_SEG_LEN;
val |= MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE;
__mt76_wr(dev, MT_WPDMA_GLO_CFG, val);
}
EXPORT_SYMBOL_GPL(mt76x02_dma_disable);
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