aboutsummaryrefslogtreecommitdiff
path: root/drivers/clocksource/clksrc-acpi.c
diff options
context:
space:
mode:
authorHanjun Guo <hanjun.guo@linaro.org>2014-01-17 20:25:13 +0800
committerGraeme Gregory <graeme.gregory@linaro.org>2014-06-03 09:24:12 +0100
commit7f4352e1aee69d03c1ddbe35db27a843f40c062c (patch)
tree37b86de953a26bf1d9689acba4e9059c59a7cf7a /drivers/clocksource/clksrc-acpi.c
parent67ec04002a5ba46502b66bee7ce50fb656330b23 (diff)
downloadleg-kernel-7f4352e1aee69d03c1ddbe35db27a843f40c062c.tar.gz
clocksource / ACPI: Introduce clocksource_acpi_init() using CLOCKSOURCE_ACPI_DECLARE
acpi_table_parse() will find table with table id and run handler on it. So we use CLOCKSOURCE_ACPI_DECLARE to decalare timer tables and glue its handler, then initialize them in clocksource_acpi_init(). Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Diffstat (limited to 'drivers/clocksource/clksrc-acpi.c')
-rw-r--r--drivers/clocksource/clksrc-acpi.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/clocksource/clksrc-acpi.c b/drivers/clocksource/clksrc-acpi.c
new file mode 100644
index 000000000000..41efc83e6821
--- /dev/null
+++ b/drivers/clocksource/clksrc-acpi.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2014, Hanjun Guo <hanjun.guo@linaro.org>
+ * Copyright (c) 2014, Amit Daniel Kachhap <amit.daniel@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/clocksource.h>
+
+extern struct acpi_device_id __clksrc_acpi_table[];
+
+static const struct acpi_device_id __clksrc_acpi_table_sentinel
+ __used __section(__clksrc_acpi_table_end);
+
+void __init clocksource_acpi_init(void)
+{
+ const struct acpi_device_id *id;
+ acpi_tbl_table_handler init_func;
+
+ for (id = __clksrc_acpi_table; id->id[0]; id++) {
+ init_func = (acpi_tbl_table_handler)id->driver_data;
+ acpi_table_parse(id->id, init_func);
+ }
+}