BC_STATUS crystalhd_hw_close(struct crystalhd_hw *hw, struct crystalhd_adp *adp)
{
if (!hw) {
printk(KERN_ERR "%s: Invalid Arguments\n", __func__);
return BC_STS_SUCCESS;
}
if (!hw->dev_started)
return BC_STS_SUCCESS;
/* Stop and DDR sleep will happen in here */
/* Only stop the HW if we are the last user */
if(adp->cfg_users == 1)
crystalhd_hw_suspend(hw);
hw->dev_started = false;
return BC_STS_SUCCESS;
}
/**
* crystalhd_suspend - Power management suspend request.
* @ctx: Command layer context.
* @idata: Iodata - required for internal use.
*
* Return:
* status
*
* 1. Set the state to Suspend.
* 2. Flush the Rx Buffers it will unmap all the buffers and
* stop the RxDMA engine.
* 3. Cancel The TX Io and Stop Dma Engine.
* 4. Put the DDR in to deep sleep.
* 5. Stop the hardware putting it in to Reset State.
*
* Current gstreamer frame work does not provide any power management
* related notification to user mode decoder plug-in. As a work-around
* we pass on the power mangement notification to our plug-in by completing
* all outstanding requests with BC_STS_IO_USER_ABORT return code.
*/
enum BC_STATUS crystalhd_suspend(struct crystalhd_cmd *ctx,
struct crystalhd_ioctl_data *idata)
{
enum BC_STATUS sts = BC_STS_SUCCESS;
if (!ctx || !idata) {
BCMLOG_ERR("Invalid Parameters\n");
return BC_STS_ERROR;
}
if (ctx->state & BC_LINK_SUSPEND)
return BC_STS_SUCCESS;
if (ctx->state == BC_LINK_INVALID) {
BCMLOG(BCMLOG_DBG, "Nothing To Do Suspend Success\n");
return BC_STS_SUCCESS;
}
ctx->state |= BC_LINK_SUSPEND;
bc_cproc_mark_pwr_state(ctx);
if (ctx->state & BC_LINK_CAP_EN) {
sts = bc_cproc_flush_cap_buffs(ctx, idata);
if (sts != BC_STS_SUCCESS)
return sts;
}
if (ctx->tx_list_id) {
sts = crystalhd_hw_cancel_tx(&ctx->hw_ctx, ctx->tx_list_id);
if (sts != BC_STS_SUCCESS)
return sts;
}
sts = crystalhd_hw_suspend(&ctx->hw_ctx);
if (sts != BC_STS_SUCCESS)
return sts;
BCMLOG(BCMLOG_DBG, "BCM70012 suspend success\n");
return BC_STS_SUCCESS;
}