treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / mediatek / mt76 / mmio.c
blob1c974df1fe25c83485fb212bdd56d3b639d7bf7c
1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 */
6 #include "mt76.h"
7 #include "trace.h"
9 static u32 mt76_mmio_rr(struct mt76_dev *dev, u32 offset)
11 u32 val;
13 val = readl(dev->mmio.regs + offset);
14 trace_reg_rr(dev, offset, val);
16 return val;
19 static void mt76_mmio_wr(struct mt76_dev *dev, u32 offset, u32 val)
21 trace_reg_wr(dev, offset, val);
22 writel(val, dev->mmio.regs + offset);
25 static u32 mt76_mmio_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
27 val |= mt76_mmio_rr(dev, offset) & ~mask;
28 mt76_mmio_wr(dev, offset, val);
29 return val;
32 static void mt76_mmio_write_copy(struct mt76_dev *dev, u32 offset,
33 const void *data, int len)
35 __iowrite32_copy(dev->mmio.regs + offset, data, DIV_ROUND_UP(len, 4));
38 static void mt76_mmio_read_copy(struct mt76_dev *dev, u32 offset,
39 void *data, int len)
41 __ioread32_copy(data, dev->mmio.regs + offset, DIV_ROUND_UP(len, 4));
44 static int mt76_mmio_wr_rp(struct mt76_dev *dev, u32 base,
45 const struct mt76_reg_pair *data, int len)
47 while (len > 0) {
48 mt76_mmio_wr(dev, data->reg, data->value);
49 data++;
50 len--;
53 return 0;
56 static int mt76_mmio_rd_rp(struct mt76_dev *dev, u32 base,
57 struct mt76_reg_pair *data, int len)
59 while (len > 0) {
60 data->value = mt76_mmio_rr(dev, data->reg);
61 data++;
62 len--;
65 return 0;
68 void mt76_set_irq_mask(struct mt76_dev *dev, u32 addr,
69 u32 clear, u32 set)
71 unsigned long flags;
73 spin_lock_irqsave(&dev->mmio.irq_lock, flags);
74 dev->mmio.irqmask &= ~clear;
75 dev->mmio.irqmask |= set;
76 mt76_mmio_wr(dev, addr, dev->mmio.irqmask);
77 spin_unlock_irqrestore(&dev->mmio.irq_lock, flags);
79 EXPORT_SYMBOL_GPL(mt76_set_irq_mask);
81 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs)
83 static const struct mt76_bus_ops mt76_mmio_ops = {
84 .rr = mt76_mmio_rr,
85 .rmw = mt76_mmio_rmw,
86 .wr = mt76_mmio_wr,
87 .write_copy = mt76_mmio_write_copy,
88 .read_copy = mt76_mmio_read_copy,
89 .wr_rp = mt76_mmio_wr_rp,
90 .rd_rp = mt76_mmio_rd_rp,
91 .type = MT76_BUS_MMIO,
94 dev->bus = &mt76_mmio_ops;
95 dev->mmio.regs = regs;
97 skb_queue_head_init(&dev->mmio.mcu.res_q);
98 init_waitqueue_head(&dev->mmio.mcu.wait);
99 spin_lock_init(&dev->mmio.irq_lock);
100 mutex_init(&dev->mmio.mcu.mutex);
102 EXPORT_SYMBOL_GPL(mt76_mmio_init);