Add entry and exit power gating isolation register
write handler.
Signed-off-by: Tomas Winkler <[email protected]>
Signed-off-by: Alexander Usyskin <[email protected]>
---
drivers/misc/mei/hw-me.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 8dbdaae..fc5d001 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -431,6 +431,35 @@ static int mei_me_read_slots(struct mei_device *dev,
unsigned char *buffer,
}
/**
+ * mei_me_pg_enter - write pg enter register to mei device.
+ *
+ * @dev: the device structure
+ */
+static void mei_me_pg_enter(struct mei_device *dev)
+{
+ struct mei_me_hw *hw = to_me_hw(dev);
+ u32 reg = mei_me_reg_read(hw, H_HPG_CSR);
+ reg |= H_HPG_CSR_PGI;
+ mei_me_reg_write(hw, H_HPG_CSR, reg);
+}
+
+/**
+ * mei_me_pg_enter - write pg enter register to mei device.
+ *
+ * @dev: the device structure
+ */
+static void mei_me_pg_exit(struct mei_device *dev)
+{
+ struct mei_me_hw *hw = to_me_hw(dev);
+ u32 reg = mei_me_reg_read(hw, H_HPG_CSR);
+
+ WARN(!(reg & H_HPG_CSR_PGI), "PGI is not set\n");
+
+ reg |= H_HPG_CSR_PGIHEXR;
+ mei_me_reg_write(hw, H_HPG_CSR, reg);
+}
+
+/**
* mei_me_irq_quick_handler - The ISR of the MEI device
*
* @irq: The irq number
--
1.8.5.3
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