From: Zhang Rui <rui.zhang@intel.com>
To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: bhelgaas@google.com, matthew.garrett@nebula.com,
rafael.j.wysocki@intel.com, dmitry.torokhov@gmail.com,
Zhang Rui <rui.zhang@intel.com>
Subject: [RFC PATCH 5/8] PNPACPI: check and enumerate CMOS RTC devices explicitly
Date: Wed, 26 Feb 2014 17:11:11 +0800 [thread overview]
Message-ID: <1393405874-3266-6-git-send-email-rui.zhang@intel.com> (raw)
In-Reply-To: <1393405874-3266-1-git-send-email-rui.zhang@intel.com>
For CMOS RTC devices, the pnpacpi scan handler does not work because
there is already a cmos rtc scan handler installed, thus we need to
check those devices and enumerate them to PNP bus explicitly.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
drivers/pnp/pnpacpi/core.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 36dda39..1ee7eb7 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -176,10 +176,6 @@ static const struct acpi_device_id acpi_pnp_device_ids[]= {
/* system */
{"PNP0c02"}, /* General ID for reserving resources */
{"PNP0c01"}, /* memory controller */
- /* rtc_cmos */
- {"PNP0b00"},
- {"PNP0b01"},
- {"PNP0b02"},
/* c6xdigio */
{"PNP0400"}, /* Standard LPT Printer Port */
{"PNP0401"}, /* ECP Printer Port */
@@ -669,6 +665,22 @@ void __init acpi_pnp_init(void)
acpi_scan_add_handler(&pnpacpi_handler);
}
+/*
+ * For CMOS RTC devices, the pnpacpi scan handler does not work because
+ * there is already a cmos rtc scan handler installed, thus we need to
+ * check those devices and enumerate them to PNP bus explicitly.
+ */
+static int is_cmos_rtc_device(struct acpi_device *adev)
+{
+ struct acpi_device_id ids[] = {
+ { "PNP0B00" },
+ { "PNP0B01" },
+ { "PNP0B02" },
+ {""},
+ };
+ return !acpi_match_device_ids(adev, ids);
+}
+
static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle,
u32 lvl, void *context,
void **rv)
@@ -677,7 +689,7 @@ static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle,
if (acpi_bus_get_device(handle, &device))
return AE_CTRL_DEPTH;
- if (device->handler == &pnpacpi_handler)
+ if (device->handler == &pnpacpi_handler || is_cmos_rtc_device(device))
pnpacpi_add_device(device);
return AE_OK;
}
--
1.7.9.5
next prev parent reply other threads:[~2014-02-26 9:11 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-26 9:11 [RFC PATCH 0/8] ACPI: change the way of enumerating PNPACPI/Platform devices Zhang Rui
2014-02-26 9:11 ` [RFC PATCH 1/8] ACPI: introduce .match() callback for ACPI scan handler Zhang Rui
2014-02-26 9:11 ` [RFC PATCH 2/8] PNPACPI: use whilte list for pnpacpi device enumeration Zhang Rui
2014-03-07 1:44 ` Rafael J. Wysocki
2014-03-09 5:29 ` Zhang Rui
2014-03-09 17:49 ` Rafael J. Wysocki
2014-03-10 2:24 ` Zhang Rui
2014-02-26 9:11 ` [RFC PATCH 3/8] PNPACPI: remove ids that does not comply with the ACPI PNP id rule Zhang Rui
2014-02-26 9:11 ` [RFC PATCH 4/8] PNPACPI: remove unsupported serial PNP ids from PNPACPI id list Zhang Rui
2014-02-26 9:11 ` Zhang Rui [this message]
2014-02-26 9:11 ` [RFC PATCH 6/8] ACPI: use platform bus as the default bus for _HID enumeration Zhang Rui
2014-03-02 23:51 ` Rafael J. Wysocki
2014-03-03 14:11 ` Zhang Rui
2014-03-03 23:23 ` Rafael J. Wysocki
2014-03-04 0:27 ` Zhang, Rui
2014-03-04 0:35 ` Rafael J. Wysocki
2014-03-07 1:46 ` Rafael J. Wysocki
2014-03-09 5:33 ` Zhang Rui
2014-03-09 17:50 ` Rafael J. Wysocki
2014-03-09 15:50 ` Zhang Rui
2014-03-09 18:04 ` Rafael J. Wysocki
2014-03-10 2:44 ` Zhang Rui
2014-03-10 2:45 ` Zhang Rui
2014-02-26 9:11 ` [RFC PATCH 7/8] Revert "ACPI / PNP: skip ACPI device nodes associated with physical nodes already" Zhang Rui
2014-02-26 9:11 ` [RFC PATCH 8/8] PNPACPI: create both PNP and Platform device nodes for PNP0C01/PNP0C02 Zhang Rui
2014-03-03 14:17 ` Zhang Rui
2014-03-03 16:17 ` Bjorn Helgaas
2014-02-26 16:47 ` [RFC PATCH 0/8] ACPI: change the way of enumerating PNPACPI/Platform devices Matthew Garrett
2014-03-03 13:50 ` Zhang Rui
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