summaryrefslogtreecommitdiffstats
path: root/kernel/include/linux/scpi_protocol.h
diff options
context:
space:
mode:
authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/include/linux/scpi_protocol.h
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/include/linux/scpi_protocol.h')
-rw-r--r--kernel/include/linux/scpi_protocol.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/kernel/include/linux/scpi_protocol.h b/kernel/include/linux/scpi_protocol.h
new file mode 100644
index 000000000..72ce932c6
--- /dev/null
+++ b/kernel/include/linux/scpi_protocol.h
@@ -0,0 +1,78 @@
+/*
+ * SCPI Message Protocol driver header
+ *
+ * Copyright (C) 2014 ARM Ltd.
+ *
+ * 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/types.h>
+
+struct scpi_opp {
+ u32 freq;
+ u32 m_volt;
+} __packed;
+
+struct scpi_dvfs_info {
+ unsigned int count;
+ unsigned int latency; /* in nanoseconds */
+ struct scpi_opp *opps;
+};
+
+enum scpi_sensor_class {
+ TEMPERATURE,
+ VOLTAGE,
+ CURRENT,
+ POWER,
+};
+
+struct scpi_sensor_info {
+ u16 sensor_id;
+ u8 class;
+ u8 trigger_type;
+ char name[20];
+} __packed;
+
+/**
+ * struct scpi_ops - represents the various operations provided
+ * by SCP through SCPI message protocol
+ * @get_version: returns the major and minor revision on the SCPI
+ * message protocol
+ * @clk_get_range: gets clock range limit(min - max in Hz)
+ * @clk_get_val: gets clock value(in Hz)
+ * @clk_set_val: sets the clock value, setting to 0 will disable the
+ * clock (if supported)
+ * @dvfs_get_idx: gets the Operating Point of the given power domain.
+ * OPP is an index to the list return by @dvfs_get_info
+ * @dvfs_set_idx: sets the Operating Point of the given power domain.
+ * OPP is an index to the list return by @dvfs_get_info
+ * @dvfs_get_info: returns the DVFS capabilities of the given power
+ * domain. It includes the OPP list and the latency information
+ */
+struct scpi_ops {
+ u32 (*get_version)(void);
+ int (*clk_get_range)(u16, unsigned long *, unsigned long *);
+ unsigned long (*clk_get_val)(u16);
+ int (*clk_set_val)(u16, unsigned long);
+ int (*dvfs_get_idx)(u8);
+ int (*dvfs_set_idx)(u8, u8);
+ struct scpi_dvfs_info *(*dvfs_get_info)(u8);
+ int (*sensor_get_capability)(u16 *sensors);
+ int (*sensor_get_info)(u16 sensor_id, struct scpi_sensor_info *);
+ int (*sensor_get_value)(u16, u32 *);
+};
+
+#if IS_REACHABLE(CONFIG_ARM_SCPI_PROTOCOL)
+struct scpi_ops *get_scpi_ops(void);
+#else
+static inline struct scpi_ops *get_scpi_ops(void) { return NULL; }
+#endif