From patchwork Thu Aug 21 12:50:45 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Subhransu S. Prusty" X-Patchwork-Id: 4757851 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7DBF59F2E9 for ; Thu, 21 Aug 2014 13:17:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3BDEC20179 for ; Thu, 21 Aug 2014 13:17:56 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id C5E722013A for ; Thu, 21 Aug 2014 13:17:54 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id C27592658AC; Thu, 21 Aug 2014 15:17:53 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,NO_DNS_FOR_FROM, UNPARSEABLE_RELAY autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 4E5CE26593B; Thu, 21 Aug 2014 15:14:23 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 3CAB326593B; Thu, 21 Aug 2014 15:14:22 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by alsa0.perex.cz (Postfix) with ESMTP id B15EE2658AB for ; Thu, 21 Aug 2014 15:13:00 +0200 (CEST) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 21 Aug 2014 06:12:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,909,1400050800"; d="scan'208";a="588002516" Received: from subhransu-udesk1.iind.intel.com ([10.223.96.40]) by fmsmga002.fm.intel.com with ESMTP; 21 Aug 2014 06:12:57 -0700 From: "Subhransu S. Prusty" To: alsa-devel@alsa-project.org Date: Thu, 21 Aug 2014 18:20:45 +0530 Message-Id: <1408625450-32315-7-git-send-email-subhransu.s.prusty@intel.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1408625450-32315-1-git-send-email-subhransu.s.prusty@intel.com> References: <1408625450-32315-1-git-send-email-subhransu.s.prusty@intel.com> Cc: vinod.koul@intel.com, broonie@kernel.org, "Subhransu S. Prusty" , lgirdwood@gmail.com, Lars-Peter Clausen Subject: [alsa-devel] [v3 06/11] ASoC: Intel: sst: Add some helper functions X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds helper functions like wait, creating ipc headers, shim wrappers. Signed-off-by: Subhransu S. Prusty Signed-off-by: Vinod Koul --- sound/soc/intel/sst/sst_pvt.c | 207 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 207 insertions(+) create mode 100644 sound/soc/intel/sst/sst_pvt.c diff --git a/sound/soc/intel/sst/sst_pvt.c b/sound/soc/intel/sst/sst_pvt.c new file mode 100644 index 000000000000..b7a138e82dfe --- /dev/null +++ b/sound/soc/intel/sst/sst_pvt.c @@ -0,0 +1,207 @@ +/* + * sst_pvt.c - Intel SST Driver for audio engine + * + * Copyright (C) 2008-14 Intel Corp + * Authors: Vinod Koul + * Harsha Priya + * Dharageswari R + * KP Jeeja + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This file contains all private functions + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "../sst-mfld-platform.h" +#include "sst.h" +#include "../sst-dsp.h" + +/* + * sst_wait_interruptible - wait on event + * + * @sst_drv_ctx: Driver context + * @block: Driver block to wait on + * + * This function waits without a timeout (and is interruptable) for a + * given block event + */ +int sst_wait_interruptible(struct intel_sst_drv *sst_drv_ctx, + struct sst_block *block) +{ + int retval = 0; + + if (!wait_event_interruptible(sst_drv_ctx->wait_queue, + block->condition)) { + /* event wake */ + if (block->ret_code < 0) { + pr_err("stream failed %d\n", block->ret_code); + retval = -EBUSY; + } else { + pr_debug("event up\n"); + retval = 0; + } + } else { + pr_err("signal interrupted\n"); + retval = -EINTR; + } + return retval; + +} + +unsigned long long read_shim_data(struct intel_sst_drv *sst, int addr) +{ + unsigned long long val = 0; + + switch (sst->pci_id) { + case SST_MRFLD_PCI_ID: + val = sst_shim_read64(sst->shim, addr); + break; + } + return val; +} + +void write_shim_data(struct intel_sst_drv *sst, int addr, + unsigned long long data) +{ + switch (sst->pci_id) { + case SST_MRFLD_PCI_ID: + sst_shim_write64(sst->shim, addr, (u64) data); + break; + } +} + +/* + * sst_wait_timeout - wait on event for timeout + * + * @sst_drv_ctx: Driver context + * @block: Driver block to wait on + * + * This function waits with a timeout value (and is not interruptible) on a + * given block event + */ +int sst_wait_timeout(struct intel_sst_drv *sst_drv_ctx, struct sst_block *block) +{ + int retval = 0; + + /* NOTE: + Observed that FW processes the alloc msg and replies even + before the alloc thread has finished execution */ + pr_debug("sst: waiting for condition %x ipc %d drv_id %d\n", + block->condition, block->msg_id, block->drv_id); + if (wait_event_timeout(sst_drv_ctx->wait_queue, + block->condition, + msecs_to_jiffies(SST_BLOCK_TIMEOUT))) { + /* event wake */ + pr_debug("sst: Event wake %x\n", block->condition); + pr_debug("sst: message ret: %d\n", block->ret_code); + retval = -block->ret_code; + } else { + block->on = false; + pr_err("sst: Wait timed-out condition:%#x, msg_id:%#x fw_state %#x\n", + block->condition, block->msg_id, + sst_drv_ctx->sst_state); + sst_drv_ctx->sst_state = SST_RESET; + + retval = -EBUSY; + } + return retval; +} + +/* + * sst_create_ipc_msg - create a IPC message + * + * @arg: ipc message + * @large: large or short message + * + * this function allocates structures to send a large or short + * message to the firmware + */ +int sst_create_ipc_msg(struct ipc_post **arg, bool large) +{ + struct ipc_post *msg; + + msg = kzalloc(sizeof(struct ipc_post), GFP_ATOMIC); + if (!msg) + return -ENOMEM; + if (large) { + msg->mailbox_data = kzalloc(SST_MAILBOX_SIZE, GFP_ATOMIC); + if (!msg->mailbox_data) { + kfree(msg); + return -ENOMEM; + } + } else { + msg->mailbox_data = NULL; + } + msg->is_large = large; + *arg = msg; + return 0; +} + +/* + * sst_create_block_and_ipc_msg - Creates IPC message and sst block + * @arg: passed to sst_create_ipc_message API + * @large: large or short message + * @sst_drv_ctx: sst driver context + * @block: return block allocated + * @msg_id: IPC + * @drv_id: stream id or private id + */ +int sst_create_block_and_ipc_msg(struct ipc_post **arg, bool large, + struct intel_sst_drv *sst_drv_ctx, struct sst_block **block, + u32 msg_id, u32 drv_id) +{ + int retval = 0; + + retval = sst_create_ipc_msg(arg, large); + if (retval) + return retval; + *block = sst_create_block(sst_drv_ctx, msg_id, drv_id); + if (*block == NULL) { + kfree(*arg); + return -ENOMEM; + } + return retval; +} + +/* + * sst_clean_stream - clean the stream context + * + * @stream: stream structure + * + * this function resets the stream contexts + * should be called in free + */ +void sst_clean_stream(struct stream_info *stream) +{ + stream->status = STREAM_UN_INIT; + stream->prev = STREAM_UN_INIT; + mutex_lock(&stream->lock); + stream->cumm_bytes = 0; + mutex_unlock(&stream->lock); +} +