aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/dream/qdsp5/audmgr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/dream/qdsp5/audmgr.c')
-rw-r--r--drivers/staging/dream/qdsp5/audmgr.c314
1 files changed, 0 insertions, 314 deletions
diff --git a/drivers/staging/dream/qdsp5/audmgr.c b/drivers/staging/dream/qdsp5/audmgr.c
deleted file mode 100644
index 427ae6c0bea8..000000000000
--- a/drivers/staging/dream/qdsp5/audmgr.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/* arch/arm/mach-msm/qdsp5/audmgr.c
- *
- * interface to "audmgr" service on the baseband cpu
- *
- * Copyright (C) 2008 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/uaccess.h>
-#include <linux/slab.h>
-#include <linux/kthread.h>
-#include <linux/wait.h>
-
-#include <asm/atomic.h>
-#include <mach/msm_rpcrouter.h>
-
-#include "audmgr.h"
-
-#define STATE_CLOSED 0
-#define STATE_DISABLED 1
-#define STATE_ENABLING 2
-#define STATE_ENABLED 3
-#define STATE_DISABLING 4
-#define STATE_ERROR 5
-
-static void rpc_ack(struct msm_rpc_endpoint *ept, uint32_t xid)
-{
- uint32_t rep[6];
-
- rep[0] = cpu_to_be32(xid);
- rep[1] = cpu_to_be32(1);
- rep[2] = cpu_to_be32(RPCMSG_REPLYSTAT_ACCEPTED);
- rep[3] = cpu_to_be32(RPC_ACCEPTSTAT_SUCCESS);
- rep[4] = 0;
- rep[5] = 0;
-
- msm_rpc_write(ept, rep, sizeof(rep));
-}
-
-static void process_audmgr_callback(struct audmgr *am,
- struct rpc_audmgr_cb_func_ptr *args,
- int len)
-{
- if (len < (sizeof(uint32_t) * 3))
- return;
- if (be32_to_cpu(args->set_to_one) != 1)
- return;
-
- switch (be32_to_cpu(args->status)) {
- case RPC_AUDMGR_STATUS_READY:
- if (len < sizeof(uint32_t) * 4)
- break;
- am->handle = be32_to_cpu(args->u.handle);
- pr_info("audmgr: rpc READY handle=0x%08x\n", am->handle);
- break;
- case RPC_AUDMGR_STATUS_CODEC_CONFIG: {
- uint32_t volume;
- if (len < sizeof(uint32_t) * 4)
- break;
- volume = be32_to_cpu(args->u.volume);
- pr_info("audmgr: rpc CODEC_CONFIG volume=0x%08x\n", volume);
- am->state = STATE_ENABLED;
- wake_up(&am->wait);
- break;
- }
- case RPC_AUDMGR_STATUS_PENDING:
- pr_err("audmgr: PENDING?\n");
- break;
- case RPC_AUDMGR_STATUS_SUSPEND:
- pr_err("audmgr: SUSPEND?\n");
- break;
- case RPC_AUDMGR_STATUS_FAILURE:
- pr_err("audmgr: FAILURE\n");
- break;
- case RPC_AUDMGR_STATUS_VOLUME_CHANGE:
- pr_err("audmgr: VOLUME_CHANGE?\n");
- break;
- case RPC_AUDMGR_STATUS_DISABLED:
- pr_err("audmgr: DISABLED\n");
- am->state = STATE_DISABLED;
- wake_up(&am->wait);
- break;
- case RPC_AUDMGR_STATUS_ERROR:
- pr_err("audmgr: ERROR?\n");
- am->state = STATE_ERROR;
- wake_up(&am->wait);
- break;
- default:
- break;
- }
-}
-
-static void process_rpc_request(uint32_t proc, uint32_t xid,
- void *data, int len, void *private)
-{
- struct audmgr *am = private;
- uint32_t *x = data;
-
- if (0) {
- int n = len / 4;
- pr_info("rpc_call proc %d:", proc);
- while (n--)
- printk(" %08x", be32_to_cpu(*x++));
- printk("\n");
- }
-
- if (proc == AUDMGR_CB_FUNC_PTR)
- process_audmgr_callback(am, data, len);
- else
- pr_err("audmgr: unknown rpc proc %d\n", proc);
- rpc_ack(am->ept, xid);
-}
-
-#define RPC_TYPE_REQUEST 0
-#define RPC_TYPE_REPLY 1
-
-#define RPC_VERSION 2
-
-#define RPC_COMMON_HDR_SZ (sizeof(uint32_t) * 2)
-#define RPC_REQUEST_HDR_SZ (sizeof(struct rpc_request_hdr))
-#define RPC_REPLY_HDR_SZ (sizeof(uint32_t) * 3)
-#define RPC_REPLY_SZ (sizeof(uint32_t) * 6)
-
-static int audmgr_rpc_thread(void *data)
-{
- struct audmgr *am = data;
- struct rpc_request_hdr *hdr = NULL;
- uint32_t type;
- int len;
-
- pr_info("audmgr_rpc_thread() start\n");
-
- while (!kthread_should_stop()) {
- if (hdr) {
- kfree(hdr);
- hdr = NULL;
- }
- len = msm_rpc_read(am->ept, (void **) &hdr, -1, -1);
- if (len < 0) {
- pr_err("audmgr: rpc read failed (%d)\n", len);
- break;
- }
- if (len < RPC_COMMON_HDR_SZ)
- continue;
-
- type = be32_to_cpu(hdr->type);
- if (type == RPC_TYPE_REPLY) {
- struct rpc_reply_hdr *rep = (void *) hdr;
- uint32_t status;
- if (len < RPC_REPLY_HDR_SZ)
- continue;
- status = be32_to_cpu(rep->reply_stat);
- if (status == RPCMSG_REPLYSTAT_ACCEPTED) {
- status = be32_to_cpu(rep->data.acc_hdr.accept_stat);
- pr_info("audmgr: rpc_reply status %d\n", status);
- } else {
- pr_info("audmgr: rpc_reply denied!\n");
- }
- /* process reply */
- continue;
- }
-
- if (len < RPC_REQUEST_HDR_SZ)
- continue;
-
- process_rpc_request(be32_to_cpu(hdr->procedure),
- be32_to_cpu(hdr->xid),
- (void *) (hdr + 1),
- len - sizeof(*hdr),
- data);
- }
- pr_info("audmgr_rpc_thread() exit\n");
- if (hdr) {
- kfree(hdr);
- hdr = NULL;
- }
- am->task = NULL;
- wake_up(&am->wait);
- return 0;
-}
-
-struct audmgr_enable_msg {
- struct rpc_request_hdr hdr;
- struct rpc_audmgr_enable_client_args args;
-};
-
-struct audmgr_disable_msg {
- struct rpc_request_hdr hdr;
- uint32_t handle;
-};
-
-int audmgr_open(struct audmgr *am)
-{
- int rc;
-
- if (am->state != STATE_CLOSED)
- return 0;
-
- am->ept = msm_rpc_connect(AUDMGR_PROG,
- AUDMGR_VERS,
- MSM_RPC_UNINTERRUPTIBLE);
-
- init_waitqueue_head(&am->wait);
-
- if (IS_ERR(am->ept)) {
- rc = PTR_ERR(am->ept);
- am->ept = NULL;
- pr_err("audmgr: failed to connect to audmgr svc\n");
- return rc;
- }
-
- am->task = kthread_run(audmgr_rpc_thread, am, "audmgr_rpc");
- if (IS_ERR(am->task)) {
- rc = PTR_ERR(am->task);
- am->task = NULL;
- msm_rpc_close(am->ept);
- am->ept = NULL;
- return rc;
- }
-
- am->state = STATE_DISABLED;
- return 0;
-}
-EXPORT_SYMBOL(audmgr_open);
-
-int audmgr_close(struct audmgr *am)
-{
- return -EBUSY;
-}
-EXPORT_SYMBOL(audmgr_close);
-
-int audmgr_enable(struct audmgr *am, struct audmgr_config *cfg)
-{
- struct audmgr_enable_msg msg;
- int rc;
-
- if (am->state == STATE_ENABLED)
- return 0;
-
- if (am->state == STATE_DISABLING)
- pr_err("audmgr: state is DISABLING in enable?\n");
- am->state = STATE_ENABLING;
-
- msg.args.set_to_one = cpu_to_be32(1);
- msg.args.tx_sample_rate = cpu_to_be32(cfg->tx_rate);
- msg.args.rx_sample_rate = cpu_to_be32(cfg->rx_rate);
- msg.args.def_method = cpu_to_be32(cfg->def_method);
- msg.args.codec_type = cpu_to_be32(cfg->codec);
- msg.args.snd_method = cpu_to_be32(cfg->snd_method);
- msg.args.cb_func = cpu_to_be32(0x11111111);
- msg.args.client_data = cpu_to_be32(0x11223344);
-
- msm_rpc_setup_req(&msg.hdr, AUDMGR_PROG, msm_rpc_get_vers(am->ept),
- AUDMGR_ENABLE_CLIENT);
-
- rc = msm_rpc_write(am->ept, &msg, sizeof(msg));
- if (rc < 0)
- return rc;
-
- rc = wait_event_timeout(am->wait, am->state != STATE_ENABLING, 15 * HZ);
- if (rc == 0) {
- pr_err("audmgr_enable: ARM9 did not reply to RPC am->state = %d\n", am->state);
- BUG();
- }
- if (am->state == STATE_ENABLED)
- return 0;
-
- pr_err("audmgr: unexpected state %d while enabling?!\n", am->state);
- return -ENODEV;
-}
-EXPORT_SYMBOL(audmgr_enable);
-
-int audmgr_disable(struct audmgr *am)
-{
- struct audmgr_disable_msg msg;
- int rc;
-
- if (am->state == STATE_DISABLED)
- return 0;
-
- msm_rpc_setup_req(&msg.hdr, AUDMGR_PROG, msm_rpc_get_vers(am->ept),
- AUDMGR_DISABLE_CLIENT);
- msg.handle = cpu_to_be32(am->handle);
-
- am->state = STATE_DISABLING;
-
- rc = msm_rpc_write(am->ept, &msg, sizeof(msg));
- if (rc < 0)
- return rc;
-
- rc = wait_event_timeout(am->wait, am->state != STATE_DISABLING, 15 * HZ);
- if (rc == 0) {
- pr_err("audmgr_disable: ARM9 did not reply to RPC am->state = %d\n", am->state);
- BUG();
- }
-
- if (am->state == STATE_DISABLED)
- return 0;
-
- pr_err("audmgr: unexpected state %d while disabling?!\n", am->state);
- return -ENODEV;
-}
-EXPORT_SYMBOL(audmgr_disable);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.