diff options
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 1e82e3311ea2..ec4ab895f03d 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -132,6 +132,41 @@ void mei_disable_interrupts(struct mei_device *dev) mei_hcsr_set(dev); } +/** + * mei_hw_reset - resets fw via mei csr register. + * + * @dev: the device structure + * @interrupts_enabled: if interrupt should be enabled after reset. + */ +void mei_hw_reset(struct mei_device *dev, bool intr_enable) +{ + u32 hcsr = mei_hcsr_read(dev); + + dev_dbg(&dev->pdev->dev, "before reset HCSR = 0x%08x.\n", hcsr); + + hcsr |= (H_RST | H_IG); + + if (intr_enable) + hcsr |= H_IE; + else + hcsr &= ~H_IE; + + hcsr &= ~H_IS; + + mei_reg_write(dev, H_CSR, hcsr); + hcsr = mei_hcsr_read(dev); + + hcsr &= ~H_RST; + hcsr |= H_IG; + hcsr &= ~H_IS; + + mei_reg_write(dev, H_CSR, hcsr); + + hcsr = mei_hcsr_read(dev); + + dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", hcsr); +} + /** * mei_interrupt_quick_handler - The ISR of the MEI device |