[PATCH 2/3] Mailbox : Added functionality to get power state

[Mudit Jain]

Kindly ignore this.  I have rebased and pushed all the changes in one
patch.

Thanks
Mudit

On Sat, Aug 20, 2016 at 6:55 PM, Mudit Jain <muditjain18011995 at gmail.com>
wrote:

> From: Mudit Jain <muditj at nvidia.com>
>
> ---
>  c/src/lib/libbsp/arm/raspberrypi/include/vc.h      |  2 ++
>  c/src/lib/libbsp/arm/raspberrypi/misc/vc.c         | 25
> ++++++++++++++++++++++
>  c/src/lib/libbsp/arm/raspberrypi/misc/vc_defines.h | 12 +++++++++++
>  3 files changed, 39 insertions(+)
>
> diff --git a/c/src/lib/libbsp/arm/raspberrypi/include/vc.h
> b/c/src/lib/libbsp/arm/raspberrypi/include/vc.h
> index d3408f9..74f7557 100644
> --- a/c/src/lib/libbsp/arm/raspberrypi/include/vc.h
> +++ b/c/src/lib/libbsp/arm/raspberrypi/include/vc.h
> @@ -106,6 +106,8 @@ typedef struct {
>  #define BCM2835_MAILBOX_POWER_STATE_NODEV ( 1 << 1 )
>  int bcm2835_mailbox_set_power_state( bcm2835_set_power_state_entries
> *_entries );
>
> +int bcm2835_mailbox_get_power_state( bcm2835_set_power_state_entries
> *_entries );
> +
>  typedef struct {
>    uint32_t base;
>    size_t size;
> diff --git a/c/src/lib/libbsp/arm/raspberrypi/misc/vc.c
> b/c/src/lib/libbsp/arm/raspberrypi/misc/vc.c
> index 53ac1e8..c089b36 100644
> --- a/c/src/lib/libbsp/arm/raspberrypi/misc/vc.c
> +++ b/c/src/lib/libbsp/arm/raspberrypi/misc/vc.c
> @@ -254,6 +254,31 @@ int bcm2835_mailbox_get_cmdline(
> bcm2835_get_cmdline_entries *_entries )
>    return 0;
>  }
>
> +int bcm2835_mailbox_get_power_state( bcm2835_set_power_state_entries
> *_entries )
> +{
> +  struct {
> +    bcm2835_mbox_buf_hdr hdr;
> +    bcm2835_mbox_tag_get_power_state get_power_state;
> +    uint32_t end_tag;
> +  } buffer BCM2835_MBOX_BUF_ALIGN_ATTRIBUTE;
> +  BCM2835_MBOX_INIT_BUF( &buffer );
> +  BCM2835_MBOX_INIT_TAG( &buffer.get_power_state,
> +    BCM2835_MAILBOX_TAG_GET_POWER_STATE );
> +  buffer.get_power_state.body.req.dev_id = _entries->dev_id;
> +  bcm2835_mailbox_buffer_flush_and_invalidate( &buffer, sizeof( &buffer
> ) );
> +
> +  if ( bcm2835_mailbox_send_read_buffer( &buffer ) )
> +    return -1;
> +
> +  _entries->dev_id = buffer.get_power_state.body.resp.dev_id;
> +  _entries->state = buffer.get_power_state.body.resp.state;
> +
> +  if ( !bcm2835_mailbox_buffer_suceeded( &buffer.hdr ) )
> +    return -2;
> +
> +  return 0;
> +}
> +
>  int bcm2835_mailbox_set_power_state( bcm2835_set_power_state_entries
> *_entries )
>  {
>    struct {
> diff --git a/c/src/lib/libbsp/arm/raspberrypi/misc/vc_defines.h
> b/c/src/lib/libbsp/arm/raspberrypi/misc/vc_defines.h
> index 516f8f4..e1a5a5b 100644
> --- a/c/src/lib/libbsp/arm/raspberrypi/misc/vc_defines.h
> +++ b/c/src/lib/libbsp/arm/raspberrypi/misc/vc_defines.h
> @@ -246,6 +246,18 @@ typedef struct {
>  #define BCM2835_MAILBOX_POWER_UDID_CCP2TX            0x00000008
>
>  #define BCM2835_MAILBOX_TAG_GET_POWER_STATE     0x00020001
> +typedef struct {
> +  bcm2835_mbox_tag_hdr tag_hdr;
> +  union {
> +    struct {
> +      uint32_t dev_id;
> +    } req;
> +    struct {
> +      uint32_t dev_id;
> +      uint32_t state;
> +    } resp;
> +  } body;
> +} bcm2835_mbox_tag_get_power_state;
>
>  #define BCM2835_MAILBOX_POWER_STATE_RESP_ON       (1 << 0)
>  #define BCM2835_MAILBOX_POWER_STATE_RESP_NODEV    (1 << 1)
> --
> 1.9.1
>
>
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