From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: jikos@kernel.org, benjamin.tissoires@redhat.com,
srinivas.pandruvada@linux.intel.com
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Ye Xiang <xiang.ye@intel.com>
Subject: [PATCH v2] HID: intel_ish-hid: HBM: Use connected standby state bit during suspend/resume
Date: Tue, 16 Mar 2021 13:23:34 -0700 [thread overview]
Message-ID: <20210316202334.655760-1-srinivas.pandruvada@linux.intel.com> (raw)
From: Ye Xiang <xiang.ye@intel.com>
The individual sensor drivers implemented in the ISH firmware needs
capability to take special actions when there is a change in the system
standby state. The ISH core firmware passes this notification to
individual sensor drivers in response to the OS request via connected
standby bit in the SYSTEM_STATE_STATUS command.
This change sets CONNECTED_STANDBY_STATE_BIT bit to 1 during suspend
callback and clears during resume callback.
Signed-off-by: Ye Xiang <xiang.ye@intel.com>
[srinivas.pandruvada@linux.intel.com: changelog rewrite]
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
v2:
changed changelog to be more clear
Changed the name in the signed-off to match "From"
drivers/hid/intel-ish-hid/ishtp/hbm.c | 6 +++---
drivers/hid/intel-ish-hid/ishtp/hbm.h | 1 +
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/intel-ish-hid/ishtp/hbm.c b/drivers/hid/intel-ish-hid/ishtp/hbm.c
index 30a91d068306..dbfae60f2621 100644
--- a/drivers/hid/intel-ish-hid/ishtp/hbm.c
+++ b/drivers/hid/intel-ish-hid/ishtp/hbm.c
@@ -914,7 +914,7 @@ static inline void fix_cl_hdr(struct ishtp_msg_hdr *hdr, size_t length,
/*** Suspend and resume notification ***/
static uint32_t current_state;
-static uint32_t supported_states = 0 | SUSPEND_STATE_BIT;
+static uint32_t supported_states = SUSPEND_STATE_BIT | CONNECTED_STANDBY_STATE_BIT;
/**
* ishtp_send_suspend() - Send suspend message to FW
@@ -933,7 +933,7 @@ void ishtp_send_suspend(struct ishtp_device *dev)
memset(&state_status_msg, 0, len);
state_status_msg.hdr.cmd = SYSTEM_STATE_STATUS;
state_status_msg.supported_states = supported_states;
- current_state |= SUSPEND_STATE_BIT;
+ current_state |= (SUSPEND_STATE_BIT | CONNECTED_STANDBY_STATE_BIT);
dev->print_log(dev, "%s() sends SUSPEND notification\n", __func__);
state_status_msg.states_status = current_state;
@@ -959,7 +959,7 @@ void ishtp_send_resume(struct ishtp_device *dev)
memset(&state_status_msg, 0, len);
state_status_msg.hdr.cmd = SYSTEM_STATE_STATUS;
state_status_msg.supported_states = supported_states;
- current_state &= ~SUSPEND_STATE_BIT;
+ current_state &= ~(CONNECTED_STANDBY_STATE_BIT | SUSPEND_STATE_BIT);
dev->print_log(dev, "%s() sends RESUME notification\n", __func__);
state_status_msg.states_status = current_state;
diff --git a/drivers/hid/intel-ish-hid/ishtp/hbm.h b/drivers/hid/intel-ish-hid/ishtp/hbm.h
index 7c445b203f2a..08f3f3ceb18c 100644
--- a/drivers/hid/intel-ish-hid/ishtp/hbm.h
+++ b/drivers/hid/intel-ish-hid/ishtp/hbm.h
@@ -235,6 +235,7 @@ struct dma_xfer_hbm {
#define SYSTEM_STATE_QUERY_SUBSCRIBERS 0x3
#define SYSTEM_STATE_STATE_CHANGE_REQ 0x4
/*indicates suspend and resume states*/
+#define CONNECTED_STANDBY_STATE_BIT (1<<0)
#define SUSPEND_STATE_BIT (1<<1)
struct ish_system_states_header {
--
2.25.4
next reply other threads:[~2021-03-16 20:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 20:23 Srinivas Pandruvada [this message]
2021-03-19 13:35 ` [PATCH v2] HID: intel_ish-hid: HBM: Use connected standby state bit during suspend/resume Jiri Kosina
2021-05-17 11:27 ` Srinivas Pandruvada
2021-05-26 13:45 ` Srinivas Pandruvada
2021-05-26 14:45 ` Jiri Kosina
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