From: Rajat Jain <rajatja@google.com>
To: Jiri Kosina <jikos@kernel.org>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
David Arcari <darcari@redhat.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
HungNien Chen <hn.chen@weidahitech.com>,
Hans de Goede <hdegoede@redhat.com>,
Brian Norris <briannorris@chromium.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
dtor@google.com,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
rajatxjain@gmail.com
Cc: Rajat Jain <rajatja@google.com>
Subject: [PATCH] HID: i2c-hid: Allow ACPI systems to specify "post-power-on-delay-ms"
Date: Mon, 2 Oct 2017 14:32:15 -0700 [thread overview]
Message-ID: <20171002213215.32201-1-rajatja@google.com> (raw)
In-Reply-To: <1506874730.16112.194.camel@linux.intel.com>
The property "post-power-on-delay-ms"" allows a platform to specify
the delay needed after power-on, but only via device trees. Thus
allow ACPI systems to also provide the same information.
Signed-off-by: Rajat Jain <rajatja@google.com>
---
drivers/hid/i2c-hid/i2c-hid.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index 77396145d2d0..97405156315a 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -865,6 +865,7 @@ static int i2c_hid_acpi_pdata(struct i2c_client *client,
union acpi_object *obj;
struct acpi_device *adev;
acpi_handle handle;
+ u32 val;
handle = ACPI_HANDLE(&client->dev);
if (!handle || acpi_bus_get_device(handle, &adev))
@@ -880,6 +881,10 @@ static int i2c_hid_acpi_pdata(struct i2c_client *client,
pdata->hid_descriptor_address = obj->integer.value;
ACPI_FREE(obj);
+ if (!device_property_read_u32(&client->dev, "post-power-on-delay-ms",
+ &val))
+ pdata->post_power_delay_ms = val;
+
return 0;
}
--
2.14.2.822.g60be5d43e6-goog
next prev parent reply other threads:[~2017-10-02 21:32 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-29 22:44 [PATCH] HID: i2c-hid: Use device properties (instead of device tree) Rajat Jain
2017-09-30 0:08 ` Brian Norris
2017-10-02 19:27 ` Rajat Jain
2017-10-01 16:18 ` Andy Shevchenko
2017-10-02 19:23 ` Rajat Jain
2017-10-02 21:32 ` Rajat Jain [this message]
2017-10-03 9:28 ` [PATCH] HID: i2c-hid: Allow ACPI systems to specify "post-power-on-delay-ms" Andy Shevchenko
2017-10-03 18:24 ` Rajat Jain
2017-10-03 18:19 ` [PATCH v3] " Rajat Jain
2017-11-21 12:30 ` Jiri Kosina
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