On Tue, 2015-04-28 at 15:39 +0530, Vasant Hegde wrote:
> From: Anshuman Khandual <khand...@linux.vnet.ibm.com>
>
> This patch registers the following two new OPAL interfaces calls
> for the platform LED subsystem. With the help of these new OPAL calls,
> the kernel will be able to get or set the state of various individual
> LEDs on the system at any given location code which is passed through
> the LED specific device tree nodes.
>
> (1) OPAL_LEDS_GET_INDICATOR opal_leds_get_ind
> (2) OPAL_LEDS_SET_INDICATOR opal_leds_set_ind
>
> Signed-off-by: Anshuman Khandual <khand...@linux.vnet.ibm.com>
> Signed-off-by: Vasant Hegde <hegdevas...@linux.vnet.ibm.com>
> Acked-by: Stewart Smith <stew...@linux.vnet.ibm.com>
> Tested-by: Stewart Smith <stew...@linux.vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
> ---
> Changes in v4:
> - Updated macros to reflect platform.
>
> arch/powerpc/include/asm/opal-api.h | 29
> +++++++++++++++++++++++-
> arch/powerpc/include/asm/opal.h | 5 ++++
> arch/powerpc/platforms/powernv/opal-wrappers.S | 2 ++
> 3 files changed, 35 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/opal-api.h
> b/arch/powerpc/include/asm/opal-api.h
> index 0321a90..ff85397 100644
> --- a/arch/powerpc/include/asm/opal-api.h
> +++ b/arch/powerpc/include/asm/opal-api.h
> @@ -153,7 +153,9 @@
> #define OPAL_FLASH_READ 110
> #define OPAL_FLASH_WRITE 111
> #define OPAL_FLASH_ERASE 112
> -#define OPAL_LAST 112
> +#define OPAL_LEDS_GET_INDICATOR 114
> +#define OPAL_LEDS_SET_INDICATOR 115
> +#define OPAL_LAST 115
>
> /* Device tree flags */
>
> @@ -730,6 +732,31 @@ struct opal_i2c_request {
> __be64 buffer_ra; /* Buffer real address */
> };
>
> +/* LED Mode */
> +#define POWERNV_LED_MODE_LIGHT_PATH "lightpath"
> +#define POWERNV_LED_MODE_GUIDING_LIGHT "guidinglight"
> +
> +/* LED type */
> +#define POWERNV_LED_TYPE_IDENTIFY "identify"
> +#define POWERNV_LED_TYPE_FAULT "fault"
> +#define POWERNV_LED_TYPE_ATTENTION "attention"
> +
> +/* LED location */
> +#define POWERNV_LED_LOC_ENCLOSURE "enclosure"
> +#define POWERNV_LED_LOC_DESCENDENT "descendent"
> +
> +enum OpalSlotLedType {
> + OPAL_SLOT_LED_TYPE_ID = 0, /* IDENTIFY LED */
> + OPAL_SLOT_LED_TYPE_FAULT = 1, /* FAULT LED */
> + OPAL_SLOT_LED_TYPE_ATTN = 2, /* System Attention LED */
> + OPAL_SLOT_LED_TYPE_MAX = 3
> +};
> +
> +enum OpalSlotLedState {
> + OPAL_SLOT_LED_STATE_OFF = 0, /* LED is OFF */
> + OPAL_SLOT_LED_STATE_ON = 1 /* LED is ON */
> +};
> +
> #endif /* __ASSEMBLY__ */
>
> #endif /* __OPAL_API_H */
> diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
> index 042af1a..e06dc7e 100644
> --- a/arch/powerpc/include/asm/opal.h
> +++ b/arch/powerpc/include/asm/opal.h
> @@ -193,6 +193,11 @@ int64_t opal_ipmi_recv(uint64_t interface, struct
> opal_ipmi_msg *msg,
> uint64_t *msg_len);
> int64_t opal_i2c_request(uint64_t async_token, uint32_t bus_id,
> struct opal_i2c_request *oreq);
> +int64_t opal_leds_get_ind(char *loc_code, u64 *led_mask,
> + u64 *led_value, u64 *max_led_type);
> +int64_t opal_leds_set_ind(uint64_t token, char *loc_code, const u64 led_mask,
> + const u64 led_value, u64 *max_led_type);
> +
>
> int64_t opal_flash_read(uint64_t id, uint64_t offset, uint64_t buf,
> uint64_t size, uint64_t token);
> diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S
> b/arch/powerpc/platforms/powernv/opal-wrappers.S
> index 4e74037..20d4da4 100644
> --- a/arch/powerpc/platforms/powernv/opal-wrappers.S
> +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
> @@ -295,3 +295,5 @@ OPAL_CALL(opal_i2c_request,
> OPAL_I2C_REQUEST);
> OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
> OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
> OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
> +OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
> +OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
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