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381 lines
9.6 KiB
381 lines
9.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2015 Jakub Kicinski <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/usb.h> |
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#include "mt7601u.h" |
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#include "usb.h" |
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#include "trace.h" |
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static const struct usb_device_id mt7601u_device_table[] = { |
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{ USB_DEVICE(0x0b05, 0x17d3) }, |
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{ USB_DEVICE(0x0e8d, 0x760a) }, |
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{ USB_DEVICE(0x0e8d, 0x760b) }, |
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{ USB_DEVICE(0x13d3, 0x3431) }, |
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{ USB_DEVICE(0x13d3, 0x3434) }, |
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{ USB_DEVICE(0x148f, 0x7601) }, |
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{ USB_DEVICE(0x148f, 0x760a) }, |
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{ USB_DEVICE(0x148f, 0x760b) }, |
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{ USB_DEVICE(0x148f, 0x760c) }, |
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{ USB_DEVICE(0x148f, 0x760d) }, |
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{ USB_DEVICE(0x2001, 0x3d04) }, |
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{ USB_DEVICE(0x2717, 0x4106) }, |
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{ USB_DEVICE(0x2955, 0x0001) }, |
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{ USB_DEVICE(0x2955, 0x1001) }, |
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{ USB_DEVICE(0x2955, 0x1003) }, |
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{ USB_DEVICE(0x2a5f, 0x1000) }, |
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{ USB_DEVICE(0x7392, 0x7710) }, |
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{ 0, } |
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}; |
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bool mt7601u_usb_alloc_buf(struct mt7601u_dev *dev, size_t len, |
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struct mt7601u_dma_buf *buf) |
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{ |
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev); |
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buf->len = len; |
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buf->urb = usb_alloc_urb(0, GFP_KERNEL); |
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buf->buf = usb_alloc_coherent(usb_dev, buf->len, GFP_KERNEL, &buf->dma); |
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return !buf->urb || !buf->buf; |
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} |
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void mt7601u_usb_free_buf(struct mt7601u_dev *dev, struct mt7601u_dma_buf *buf) |
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{ |
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev); |
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usb_free_coherent(usb_dev, buf->len, buf->buf, buf->dma); |
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usb_free_urb(buf->urb); |
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} |
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int mt7601u_usb_submit_buf(struct mt7601u_dev *dev, int dir, int ep_idx, |
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struct mt7601u_dma_buf *buf, gfp_t gfp, |
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usb_complete_t complete_fn, void *context) |
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{ |
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev); |
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unsigned pipe; |
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int ret; |
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if (dir == USB_DIR_IN) |
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pipe = usb_rcvbulkpipe(usb_dev, dev->in_eps[ep_idx]); |
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else |
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pipe = usb_sndbulkpipe(usb_dev, dev->out_eps[ep_idx]); |
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usb_fill_bulk_urb(buf->urb, usb_dev, pipe, buf->buf, buf->len, |
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complete_fn, context); |
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buf->urb->transfer_dma = buf->dma; |
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buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
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trace_mt_submit_urb(dev, buf->urb); |
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ret = usb_submit_urb(buf->urb, gfp); |
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if (ret) |
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dev_err(dev->dev, "Error: submit URB dir:%d ep:%d failed:%d\n", |
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dir, ep_idx, ret); |
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return ret; |
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} |
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void mt7601u_complete_urb(struct urb *urb) |
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{ |
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struct completion *cmpl = urb->context; |
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complete(cmpl); |
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} |
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int mt7601u_vendor_request(struct mt7601u_dev *dev, const u8 req, |
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const u8 direction, const u16 val, const u16 offset, |
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void *buf, const size_t buflen) |
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{ |
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int i, ret; |
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struct usb_device *usb_dev = mt7601u_to_usb_dev(dev); |
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const u8 req_type = direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE; |
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const unsigned int pipe = (direction == USB_DIR_IN) ? |
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usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0); |
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for (i = 0; i < MT_VEND_REQ_MAX_RETRY; i++) { |
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ret = usb_control_msg(usb_dev, pipe, req, req_type, |
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val, offset, buf, buflen, |
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MT_VEND_REQ_TOUT_MS); |
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trace_mt_vend_req(dev, pipe, req, req_type, val, offset, |
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buf, buflen, ret); |
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if (ret == -ENODEV) |
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set_bit(MT7601U_STATE_REMOVED, &dev->state); |
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if (ret >= 0 || ret == -ENODEV) |
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return ret; |
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msleep(5); |
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} |
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dev_err(dev->dev, "Vendor request req:%02x off:%04x failed:%d\n", |
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req, offset, ret); |
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return ret; |
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} |
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void mt7601u_vendor_reset(struct mt7601u_dev *dev) |
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{ |
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mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT, |
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MT_VEND_DEV_MODE_RESET, 0, NULL, 0); |
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} |
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/* should be called with vendor_req_mutex held */ |
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static u32 __mt7601u_rr(struct mt7601u_dev *dev, u32 offset) |
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{ |
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int ret; |
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u32 val = ~0; |
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WARN_ONCE(offset > USHRT_MAX, "read high off:%08x", offset); |
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ret = mt7601u_vendor_request(dev, MT_VEND_MULTI_READ, USB_DIR_IN, |
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0, offset, dev->vend_buf, MT_VEND_BUF); |
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if (ret == MT_VEND_BUF) |
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val = get_unaligned_le32(dev->vend_buf); |
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else if (ret > 0) |
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dev_err(dev->dev, "Error: wrong size read:%d off:%08x\n", |
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ret, offset); |
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trace_reg_read(dev, offset, val); |
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return val; |
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} |
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u32 mt7601u_rr(struct mt7601u_dev *dev, u32 offset) |
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{ |
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u32 ret; |
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mutex_lock(&dev->vendor_req_mutex); |
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ret = __mt7601u_rr(dev, offset); |
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mutex_unlock(&dev->vendor_req_mutex); |
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return ret; |
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} |
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/* should be called with vendor_req_mutex held */ |
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static int __mt7601u_vendor_single_wr(struct mt7601u_dev *dev, const u8 req, |
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const u16 offset, const u32 val) |
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{ |
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int ret = mt7601u_vendor_request(dev, req, USB_DIR_OUT, |
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val & 0xffff, offset, NULL, 0); |
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if (!ret) |
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ret = mt7601u_vendor_request(dev, req, USB_DIR_OUT, |
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val >> 16, offset + 2, NULL, 0); |
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trace_reg_write(dev, offset, val); |
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return ret; |
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} |
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int mt7601u_vendor_single_wr(struct mt7601u_dev *dev, const u8 req, |
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const u16 offset, const u32 val) |
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{ |
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int ret; |
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mutex_lock(&dev->vendor_req_mutex); |
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ret = __mt7601u_vendor_single_wr(dev, req, offset, val); |
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mutex_unlock(&dev->vendor_req_mutex); |
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return ret; |
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} |
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void mt7601u_wr(struct mt7601u_dev *dev, u32 offset, u32 val) |
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{ |
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WARN_ONCE(offset > USHRT_MAX, "write high off:%08x", offset); |
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mt7601u_vendor_single_wr(dev, MT_VEND_WRITE, offset, val); |
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} |
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u32 mt7601u_rmw(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val) |
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{ |
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mutex_lock(&dev->vendor_req_mutex); |
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val |= __mt7601u_rr(dev, offset) & ~mask; |
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__mt7601u_vendor_single_wr(dev, MT_VEND_WRITE, offset, val); |
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mutex_unlock(&dev->vendor_req_mutex); |
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return val; |
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} |
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u32 mt7601u_rmc(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val) |
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{ |
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u32 reg; |
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mutex_lock(&dev->vendor_req_mutex); |
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reg = __mt7601u_rr(dev, offset); |
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val |= reg & ~mask; |
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if (reg != val) |
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__mt7601u_vendor_single_wr(dev, MT_VEND_WRITE, |
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offset, val); |
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mutex_unlock(&dev->vendor_req_mutex); |
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return val; |
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} |
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void mt7601u_wr_copy(struct mt7601u_dev *dev, u32 offset, |
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const void *data, int len) |
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{ |
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WARN_ONCE(offset & 3, "unaligned write copy off:%08x", offset); |
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WARN_ONCE(len & 3, "short write copy off:%08x", offset); |
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mt7601u_burst_write_regs(dev, offset, data, len / 4); |
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} |
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void mt7601u_addr_wr(struct mt7601u_dev *dev, const u32 offset, const u8 *addr) |
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{ |
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mt7601u_wr(dev, offset, get_unaligned_le32(addr)); |
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mt7601u_wr(dev, offset + 4, addr[4] | addr[5] << 8); |
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} |
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static int mt7601u_assign_pipes(struct usb_interface *usb_intf, |
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struct mt7601u_dev *dev) |
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{ |
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struct usb_endpoint_descriptor *ep_desc; |
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struct usb_host_interface *intf_desc = usb_intf->cur_altsetting; |
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unsigned i, ep_i = 0, ep_o = 0; |
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BUILD_BUG_ON(sizeof(dev->in_eps) < __MT_EP_IN_MAX); |
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BUILD_BUG_ON(sizeof(dev->out_eps) < __MT_EP_OUT_MAX); |
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for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) { |
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ep_desc = &intf_desc->endpoint[i].desc; |
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if (usb_endpoint_is_bulk_in(ep_desc) && |
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ep_i++ < __MT_EP_IN_MAX) { |
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dev->in_eps[ep_i - 1] = usb_endpoint_num(ep_desc); |
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dev->in_max_packet = usb_endpoint_maxp(ep_desc); |
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/* Note: this is ignored by usb sub-system but vendor |
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* code does it. We can drop this at some point. |
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*/ |
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dev->in_eps[ep_i - 1] |= USB_DIR_IN; |
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} else if (usb_endpoint_is_bulk_out(ep_desc) && |
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ep_o++ < __MT_EP_OUT_MAX) { |
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dev->out_eps[ep_o - 1] = usb_endpoint_num(ep_desc); |
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dev->out_max_packet = usb_endpoint_maxp(ep_desc); |
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} |
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} |
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if (ep_i != __MT_EP_IN_MAX || ep_o != __MT_EP_OUT_MAX) { |
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dev_err(dev->dev, "Error: wrong pipe number in:%d out:%d\n", |
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ep_i, ep_o); |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static int mt7601u_probe(struct usb_interface *usb_intf, |
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const struct usb_device_id *id) |
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{ |
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struct usb_device *usb_dev = interface_to_usbdev(usb_intf); |
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struct mt7601u_dev *dev; |
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u32 asic_rev, mac_rev; |
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int ret; |
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dev = mt7601u_alloc_device(&usb_intf->dev); |
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if (!dev) |
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return -ENOMEM; |
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usb_dev = usb_get_dev(usb_dev); |
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usb_reset_device(usb_dev); |
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usb_set_intfdata(usb_intf, dev); |
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dev->vend_buf = devm_kmalloc(dev->dev, MT_VEND_BUF, GFP_KERNEL); |
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if (!dev->vend_buf) { |
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ret = -ENOMEM; |
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goto err; |
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} |
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ret = mt7601u_assign_pipes(usb_intf, dev); |
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if (ret) |
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goto err; |
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ret = mt7601u_wait_asic_ready(dev); |
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if (ret) |
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goto err; |
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asic_rev = mt7601u_rr(dev, MT_ASIC_VERSION); |
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mac_rev = mt7601u_rr(dev, MT_MAC_CSR0); |
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dev_info(dev->dev, "ASIC revision: %08x MAC revision: %08x\n", |
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asic_rev, mac_rev); |
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if ((asic_rev >> 16) != 0x7601) { |
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ret = -ENODEV; |
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goto err; |
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} |
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/* Note: vendor driver skips this check for MT7601U */ |
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if (!(mt7601u_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL)) |
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dev_warn(dev->dev, "Warning: eFUSE not present\n"); |
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ret = mt7601u_init_hardware(dev); |
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if (ret) |
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goto err; |
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ret = mt7601u_register_device(dev); |
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if (ret) |
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goto err_hw; |
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set_bit(MT7601U_STATE_INITIALIZED, &dev->state); |
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return 0; |
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err_hw: |
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mt7601u_cleanup(dev); |
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err: |
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usb_set_intfdata(usb_intf, NULL); |
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usb_put_dev(interface_to_usbdev(usb_intf)); |
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destroy_workqueue(dev->stat_wq); |
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ieee80211_free_hw(dev->hw); |
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return ret; |
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} |
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static void mt7601u_disconnect(struct usb_interface *usb_intf) |
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{ |
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struct mt7601u_dev *dev = usb_get_intfdata(usb_intf); |
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ieee80211_unregister_hw(dev->hw); |
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mt7601u_cleanup(dev); |
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usb_set_intfdata(usb_intf, NULL); |
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usb_put_dev(interface_to_usbdev(usb_intf)); |
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destroy_workqueue(dev->stat_wq); |
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ieee80211_free_hw(dev->hw); |
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} |
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static int mt7601u_suspend(struct usb_interface *usb_intf, pm_message_t state) |
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{ |
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struct mt7601u_dev *dev = usb_get_intfdata(usb_intf); |
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mt7601u_cleanup(dev); |
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return 0; |
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} |
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static int mt7601u_resume(struct usb_interface *usb_intf) |
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{ |
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struct mt7601u_dev *dev = usb_get_intfdata(usb_intf); |
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int ret; |
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ret = mt7601u_init_hardware(dev); |
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if (ret) |
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return ret; |
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set_bit(MT7601U_STATE_INITIALIZED, &dev->state); |
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return 0; |
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} |
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MODULE_DEVICE_TABLE(usb, mt7601u_device_table); |
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MODULE_FIRMWARE(MT7601U_FIRMWARE); |
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MODULE_LICENSE("GPL"); |
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static struct usb_driver mt7601u_driver = { |
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.name = KBUILD_MODNAME, |
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.id_table = mt7601u_device_table, |
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.probe = mt7601u_probe, |
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.disconnect = mt7601u_disconnect, |
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.suspend = mt7601u_suspend, |
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.resume = mt7601u_resume, |
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.reset_resume = mt7601u_resume, |
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.soft_unbind = 1, |
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.disable_hub_initiated_lpm = 1, |
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}; |
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module_usb_driver(mt7601u_driver);
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