diff options
Diffstat (limited to 'drivers/misc/mei/hbm.c')
| -rw-r--r-- | drivers/misc/mei/hbm.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 4960288e543..a16b47c855a 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -14,6 +14,7 @@ * */ +#include <linux/export.h> #include <linux/pci.h> #include <linux/sched.h> #include <linux/wait.h> @@ -289,6 +290,34 @@ static int mei_hbm_prop_req(struct mei_device *dev) return 0; } +/* + * mei_hbm_pg - sends pg command + * + * @dev: the device structure + * @pg_cmd: the pg command code + * + * This function returns -EIO on write failure + */ +int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd) +{ + struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; + struct hbm_power_gate *req; + const size_t len = sizeof(struct hbm_power_gate); + int ret; + + mei_hbm_hdr(mei_hdr, len); + + req = (struct hbm_power_gate *)dev->wr_msg.data; + memset(req, 0, len); + req->hbm_cmd = pg_cmd; + + ret = mei_write_message(dev, mei_hdr, dev->wr_msg.data); + if (ret) + dev_err(&dev->pdev->dev, "power gate command write failed.\n"); + return ret; +} +EXPORT_SYMBOL_GPL(mei_hbm_pg); + /** * mei_hbm_stop_req - send stop request message * @@ -701,6 +730,18 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) mei_hbm_cl_flow_control_res(dev, flow_control); break; + case MEI_PG_ISOLATION_ENTRY_RES_CMD: + dev_dbg(&dev->pdev->dev, "power gate isolation entry response received\n"); + if (waitqueue_active(&dev->wait_pg)) + wake_up(&dev->wait_pg); + break; + + case MEI_PG_ISOLATION_EXIT_REQ_CMD: + dev_dbg(&dev->pdev->dev, "power gate isolation exit request received\n"); + if (waitqueue_active(&dev->wait_pg)) + wake_up(&dev->wait_pg); + break; + case HOST_CLIENT_PROPERTIES_RES_CMD: dev_dbg(&dev->pdev->dev, "hbm: properties response: message received.\n"); |