Re: [PATCH net-next 10/11] ptp: ocp: Add IRIG-B output mode control
- From
- Jakub Kicinski <kuba@kernel.org>
- Date
- 2021-09-02 00:07:05
- Reply to
- Jonathan Lemon, 2021-08-30
On Mon, 30 Aug 2021 16:52:35 -0700 Jonathan Lemon wrote:
quoted hunk ↗ jump to hunk
+ err = kstrtou8(buf, 0, &val); + if (err) + return err; + if (val > 7) + return -EINVAL; + + reg = ((val & 0x7) << 16); + + spin_lock_irqsave(&bp->lock, flags); + iowrite32(0, &bp->irig_out->ctrl); /* disable */ + iowrite32(reg, &bp->irig_out->ctrl); /* change mode */ + iowrite32(reg | IRIG_M_CTRL_ENABLE, &bp->irig_out->ctrl); + spin_unlock_irqrestore(&bp->lock, flags);
locking