msm: thermal: Add IOCTL interface support to Kernel Thermal Monitor
Kernel Thermal Monitor exposes an IOCTL dev interface, which can
be used for user space cpu frequency mitigation.
CRs-Fixed: 538981
Change-Id: Idb8b836970f7d5d029fea606aaa4f7958c982f68
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
diff --git a/include/linux/msm_thermal_ioctl.h b/include/linux/msm_thermal_ioctl.h
new file mode 100644
index 0000000..7b36493
--- /dev/null
+++ b/include/linux/msm_thermal_ioctl.h
@@ -0,0 +1,41 @@
+#ifndef _MSM_THERMAL_IOCTL_H
+#define _MSM_THERMAL_IOCTL_H
+
+#include <linux/ioctl.h>
+
+#define MSM_THERMAL_IOCTL_NAME "msm_thermal_query"
+
+struct __attribute__((__packed__)) cpu_freq_arg {
+ uint32_t cpu_num;
+ uint32_t freq_req;
+};
+
+struct __attribute__((__packed__)) msm_thermal_ioctl {
+ uint32_t size;
+ union {
+ struct cpu_freq_arg cpu_freq;
+ };
+};
+
+enum {
+ /*Set CPU Frequency*/
+ MSM_SET_CPU_MAX_FREQ = 0x00,
+ MSM_SET_CPU_MIN_FREQ = 0x01,
+
+ MSM_CMD_MAX_NR,
+};
+
+#define MSM_THERMAL_MAGIC_NUM 0xCA /*Unique magic number*/
+
+#define MSM_THERMAL_SET_CPU_MAX_FREQUENCY _IOW(MSM_THERMAL_MAGIC_NUM,\
+ MSM_SET_CPU_MAX_FREQ, struct msm_thermal_ioctl)
+
+#define MSM_THERMAL_SET_CPU_MIN_FREQUENCY _IOW(MSM_THERMAL_MAGIC_NUM,\
+ MSM_SET_CPU_MIN_FREQ, struct msm_thermal_ioctl)
+
+#ifdef __KERNEL__
+extern int msm_thermal_ioctl_init(void);
+extern void msm_thermal_ioctl_cleanup(void);
+#endif
+
+#endif