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path: root/drivers/misc/mei/hw-me.c
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Diffstat (limited to 'drivers/misc/mei/hw-me.c')
-rw-r--r--drivers/misc/mei/hw-me.c29
1 files changed, 20 insertions, 9 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 45ea7185c003..642c6223fa6c 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -152,6 +152,20 @@ static void mei_me_intr_disable(struct mei_device *dev)
152} 152}
153 153
154/** 154/**
155 * mei_me_hw_reset_release - release device from the reset
156 *
157 * @dev: the device structure
158 */
159static void mei_me_hw_reset_release(struct mei_device *dev)
160{
161 struct mei_me_hw *hw = to_me_hw(dev);
162 u32 hcsr = mei_hcsr_read(hw);
163
164 hcsr |= H_IG;
165 hcsr &= ~H_RST;
166 mei_hcsr_set(hw, hcsr);
167}
168/**
155 * mei_me_hw_reset - resets fw via mei csr register. 169 * mei_me_hw_reset - resets fw via mei csr register.
156 * 170 *
157 * @dev: the device structure 171 * @dev: the device structure
@@ -169,18 +183,14 @@ static void mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
169 if (intr_enable) 183 if (intr_enable)
170 hcsr |= H_IE; 184 hcsr |= H_IE;
171 else 185 else
172 hcsr &= ~H_IE; 186 hcsr |= ~H_IE;
173
174 mei_hcsr_set(hw, hcsr);
175
176 hcsr = mei_hcsr_read(hw) | H_IG;
177 hcsr &= ~H_RST;
178 187
179 mei_hcsr_set(hw, hcsr); 188 mei_hcsr_set(hw, hcsr);
180 189
181 hcsr = mei_hcsr_read(hw); 190 if (dev->dev_state == MEI_DEV_POWER_DOWN)
191 mei_me_hw_reset_release(dev);
182 192
183 dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", hcsr); 193 dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", mei_hcsr_read(hw));
184} 194}
185 195
186/** 196/**
@@ -466,7 +476,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
466 mutex_unlock(&dev->device_lock); 476 mutex_unlock(&dev->device_lock);
467 return IRQ_HANDLED; 477 return IRQ_HANDLED;
468 } else { 478 } else {
469 dev_dbg(&dev->pdev->dev, "FW not ready.\n"); 479 dev_dbg(&dev->pdev->dev, "Reset Completed.\n");
480 mei_me_hw_reset_release(dev);
470 mutex_unlock(&dev->device_lock); 481 mutex_unlock(&dev->device_lock);
471 return IRQ_HANDLED; 482 return IRQ_HANDLED;
472 } 483 }