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powerpc/powernv: Enable fetching of platform sensor data

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This patch enables fetching of various platform sensor data through
OPAL and expects a sensor handle from the driver to pass to OPAL.

Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Neelesh Gupta
2014-03-07 11:03:27 +05:30
committed by Benjamin Herrenschmidt
parent 4029cd6654
commit 7224adbbb8
4 changed files with 70 additions and 1 deletions
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4
arch/powerpc/include/asm/opal.h
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@ -168,6 +168,7 @@ extern int opal_enter_rtas(struct rtas_args *args,
#define OPAL_GET_MSG 85
#define OPAL_CHECK_ASYNC_COMPLETION 86
#define OPAL_SYNC_HOST_REBOOT 87
#define OPAL_SENSOR_READ 88
#define OPAL_GET_PARAM 89
#define OPAL_SET_PARAM 90
#define OPAL_DUMP_RESEND 91
@ -872,6 +873,8 @@ int64_t opal_get_param(uint64_t token, uint32_t param_id, uint64_t buffer,
size_t length);
int64_t opal_set_param(uint64_t token, uint32_t param_id, uint64_t buffer,
size_t length);
int64_t opal_sensor_read(uint32_t sensor_hndl, int token,
uint32_t *sensor_data);
/* Internal functions */
extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data);
@ -902,6 +905,7 @@ extern int opal_async_get_token_interruptible(void);
extern int __opal_async_release_token(int token);
extern int opal_async_release_token(int token);
extern int opal_async_wait_response(uint64_t token, struct opal_msg *msg);
extern int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data);
extern void hvc_opal_init_early(void);