On 12/09/2013 11:47 PM, Andy Shevchenko wrote:
We have to provide a mechanism to retrive GPIO information from SFI. For this
we store SFI GPIO table and provide the lookup function
sfi_gpio_get_entry_by_name() that will be used later in GPIO framework.
Signed-off-by: Andy Shevchenko <[email protected]>
---
drivers/sfi/Makefile | 2 +-
drivers/sfi/sfi_core.c | 6 +++
drivers/sfi/sfi_core.h | 3 ++
drivers/sfi/sfi_gpio.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/sfi.h | 10 ++++
5 files changed, 141 insertions(+), 1 deletion(-)
create mode 100644 drivers/sfi/sfi_gpio.c
diff --git a/drivers/sfi/Makefile b/drivers/sfi/Makefile
index 2343732..dc011db 100644
--- a/drivers/sfi/Makefile
+++ b/drivers/sfi/Makefile
@@ -1,3 +1,3 @@
obj-y += sfi_acpi.o
obj-y += sfi_core.o
-
+obj-y += sfi_gpio.o
diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c
index 296db7a..e9ff6f0 100644
--- a/drivers/sfi/sfi_core.c
+++ b/drivers/sfi/sfi_core.c
@@ -512,6 +512,12 @@ void __init sfi_init_late(void)
syst_va = sfi_map_memory(syst_pa, length);
sfi_acpi_init();
+
+ /*
+ * Parsing GPIO table first, since the DEVS table will need this table
+ * to map the pin name to the actual pin.
+ */
+ sfi_gpio_init();
}
/*
diff --git a/drivers/sfi/sfi_core.h b/drivers/sfi/sfi_core.h
index 1d5cfe8..18c663d 100644
--- a/drivers/sfi/sfi_core.h
+++ b/drivers/sfi/sfi_core.h
@@ -79,3 +79,6 @@ struct sfi_table_header *sfi_get_table(struct sfi_table_key
*key);
extern void sfi_put_table(struct sfi_table_header *table);
extern struct sfi_table_attr __init *sfi_sysfs_install_table(u64 pa);
extern void __init sfi_acpi_sysfs_init(void);
+
+/* sfi_gpio.c */
+int sfi_gpio_init(void);
diff --git a/drivers/sfi/sfi_gpio.c b/drivers/sfi/sfi_gpio.c
new file mode 100644
index 0000000..22627a1
--- /dev/null
+++ b/drivers/sfi/sfi_gpio.c
@@ -0,0 +1,121 @@
+/* sfi_gpio.c Simple Firmware Interface - GPIO extensions */
+
+/*
+
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+
+ Copyright(c) 2013 Intel Corporation. All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that 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, write to the Free Software
+ Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ The full GNU General Public License is included in this distribution
+ in the file called LICENSE.GPL.
FSF address is still here - please remove the last paragraph in the next
version.
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