+++ /dev/null
-/* arch/arm/mach-msm/qdsp5/snd.c
- *
- * interface to "snd" service on the baseband cpu
- *
- * Copyright (C) 2008 HTC Corporation
- *
- * 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/miscdevice.h>
-#include <linux/uaccess.h>
-#include <linux/kthread.h>
-#include <linux/delay.h>
-#include <linux/msm_audio.h>
-
-#include <asm/atomic.h>
-#include <asm/ioctls.h>
-#include <mach/board.h>
-#include <mach/msm_rpcrouter.h>
-
-struct snd_ctxt {
- struct mutex lock;
- int opened;
- struct msm_rpc_endpoint *ept;
- struct msm_snd_endpoints *snd_epts;
-};
-
-static struct snd_ctxt the_snd;
-
-#define RPC_SND_PROG 0x30000002
-#define RPC_SND_CB_PROG 0x31000002
-#if CONFIG_MSM_AMSS_VERSION == 6210
-#define RPC_SND_VERS 0x94756085 /* 2490720389 */
-#elif (CONFIG_MSM_AMSS_VERSION == 6220) || \
- (CONFIG_MSM_AMSS_VERSION == 6225)
-#define RPC_SND_VERS 0xaa2b1a44 /* 2854951492 */
-#elif CONFIG_MSM_AMSS_VERSION == 6350
-#define RPC_SND_VERS MSM_RPC_VERS(1,0)
-#endif
-
-#define SND_SET_DEVICE_PROC 2
-#define SND_SET_VOLUME_PROC 3
-
-struct rpc_snd_set_device_args {
- uint32_t device;
- uint32_t ear_mute;
- uint32_t mic_mute;
-
- uint32_t cb_func;
- uint32_t client_data;
-};
-
-struct rpc_snd_set_volume_args {
- uint32_t device;
- uint32_t method;
- uint32_t volume;
-
- uint32_t cb_func;
- uint32_t client_data;
-};
-
-struct snd_set_device_msg {
- struct rpc_request_hdr hdr;
- struct rpc_snd_set_device_args args;
-};
-
-struct snd_set_volume_msg {
- struct rpc_request_hdr hdr;
- struct rpc_snd_set_volume_args args;
-};
-
-struct snd_endpoint *get_snd_endpoints(int *size);
-
-static inline int check_mute(int mute)
-{
- return (mute == SND_MUTE_MUTED ||
- mute == SND_MUTE_UNMUTED) ? 0 : -EINVAL;
-}
-
-static int get_endpoint(struct snd_ctxt *snd, unsigned long arg)
-{
- int rc = 0, index;
- struct msm_snd_endpoint ept;
-
- if (copy_from_user(&ept, (void __user *)arg, sizeof(ept))) {
- pr_err("snd_ioctl get endpoint: invalid read pointer.\n");
- return -EFAULT;
- }
-
- index = ept.id;
- if (index < 0 || index >= snd->snd_epts->num) {
- pr_err("snd_ioctl get endpoint: invalid index!\n");
- return -EINVAL;
- }
-
- ept.id = snd->snd_epts->endpoints[index].id;
- strncpy(ept.name,
- snd->snd_epts->endpoints[index].name,
- sizeof(ept.name));
-
- if (copy_to_user((void __user *)arg, &ept, sizeof(ept))) {
- pr_err("snd_ioctl get endpoint: invalid write pointer.\n");
- rc = -EFAULT;
- }
-
- return rc;
-}
-
-static long snd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct snd_set_device_msg dmsg;
- struct snd_set_volume_msg vmsg;
- struct msm_snd_device_config dev;
- struct msm_snd_volume_config vol;
- struct snd_ctxt *snd = file->private_data;
- int rc = 0;
-
- mutex_lock(&snd->lock);
- switch (cmd) {
- case SND_SET_DEVICE:
- if (copy_from_user(&dev, (void __user *) arg, sizeof(dev))) {
- pr_err("snd_ioctl set device: invalid pointer.\n");
- rc = -EFAULT;
- break;
- }
-
- dmsg.args.device = cpu_to_be32(dev.device);
- dmsg.args.ear_mute = cpu_to_be32(dev.ear_mute);
- dmsg.args.mic_mute = cpu_to_be32(dev.mic_mute);
- if (check_mute(dev.ear_mute) < 0 ||
- check_mute(dev.mic_mute) < 0) {
- pr_err("snd_ioctl set device: invalid mute status.\n");
- rc = -EINVAL;
- break;
- }
- dmsg.args.cb_func = -1;
- dmsg.args.client_data = 0;
-
- pr_info("snd_set_device %d %d %d\n", dev.device,
- dev.ear_mute, dev.mic_mute);
-
- rc = msm_rpc_call(snd->ept,
- SND_SET_DEVICE_PROC,
- &dmsg, sizeof(dmsg), 5 * HZ);
- break;
-
- case SND_SET_VOLUME:
- if (copy_from_user(&vol, (void __user *) arg, sizeof(vol))) {
- pr_err("snd_ioctl set volume: invalid pointer.\n");
- rc = -EFAULT;
- break;
- }
-
- vmsg.args.device = cpu_to_be32(vol.device);
- vmsg.args.method = cpu_to_be32(vol.method);
- if (vol.method != SND_METHOD_VOICE) {
- pr_err("snd_ioctl set volume: invalid method.\n");
- rc = -EINVAL;
- break;
- }
-
- vmsg.args.volume = cpu_to_be32(vol.volume);
- vmsg.args.cb_func = -1;
- vmsg.args.client_data = 0;
-
- pr_info("snd_set_volume %d %d %d\n", vol.device,
- vol.method, vol.volume);
-
- rc = msm_rpc_call(snd->ept,
- SND_SET_VOLUME_PROC,
- &vmsg, sizeof(vmsg), 5 * HZ);
- break;
-
- case SND_GET_NUM_ENDPOINTS:
- if (copy_to_user((void __user *)arg,
- &snd->snd_epts->num, sizeof(unsigned))) {
- pr_err("snd_ioctl get endpoint: invalid pointer.\n");
- rc = -EFAULT;
- }
- break;
-
- case SND_GET_ENDPOINT:
- rc = get_endpoint(snd, arg);
- break;
-
- default:
- pr_err("snd_ioctl unknown command.\n");
- rc = -EINVAL;
- break;
- }
- mutex_unlock(&snd->lock);
-
- return rc;
-}
-
-static int snd_release(struct inode *inode, struct file *file)
-{
- struct snd_ctxt *snd = file->private_data;
-
- mutex_lock(&snd->lock);
- snd->opened = 0;
- mutex_unlock(&snd->lock);
- return 0;
-}
-
-static int snd_open(struct inode *inode, struct file *file)
-{
- struct snd_ctxt *snd = &the_snd;
- int rc = 0;
-
- mutex_lock(&snd->lock);
- if (snd->opened == 0) {
- if (snd->ept == NULL) {
- snd->ept = msm_rpc_connect(RPC_SND_PROG, RPC_SND_VERS,
- MSM_RPC_UNINTERRUPTIBLE);
- if (IS_ERR(snd->ept)) {
- rc = PTR_ERR(snd->ept);
- snd->ept = NULL;
- pr_err("snd: failed to connect snd svc\n");
- goto err;
- }
- }
- file->private_data = snd;
- snd->opened = 1;
- } else {
- pr_err("snd already opened.\n");
- rc = -EBUSY;
- }
-
-err:
- mutex_unlock(&snd->lock);
- return rc;
-}
-
-static struct file_operations snd_fops = {
- .owner = THIS_MODULE,
- .open = snd_open,
- .release = snd_release,
- .unlocked_ioctl = snd_ioctl,
-};
-
-struct miscdevice snd_misc = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "msm_snd",
- .fops = &snd_fops,
-};
-
-static int snd_probe(struct platform_device *pdev)
-{
- struct snd_ctxt *snd = &the_snd;
- mutex_init(&snd->lock);
- snd->snd_epts = (struct msm_snd_endpoints *)pdev->dev.platform_data;
- return misc_register(&snd_misc);
-}
-
-static struct platform_driver snd_plat_driver = {
- .probe = snd_probe,
- .driver = {
- .name = "msm_snd",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init snd_init(void)
-{
- return platform_driver_register(&snd_plat_driver);
-}
-
-module_init(snd_init);
projects / mv-sheeva.git / blobdiff