M7350/kernel/arch/arm/mach-msm/htc_acoustic_qsd.c

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2024-09-09 08:52:07 +00:00
/* arch/arm/mach-msm/htc_acoustic_qsd.c
*
* Copyright (C) 2009 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/device.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/miscdevice.h>
#include <linux/mm.h>
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/uaccess.h>
#include <linux/mutex.h>
#include <linux/gpio.h>
#include <mach/msm_smd.h>
#include <mach/msm_rpcrouter.h>
#include <mach/msm_iomap.h>
#include <mach/htc_acoustic_qsd.h>
#include <mach/msm_qdsp6_audio.h>
#include "smd_private.h"
#define ACOUSTIC_IOCTL_MAGIC 'p'
#define ACOUSTIC_UPDATE_ADIE \
_IOW(ACOUSTIC_IOCTL_MAGIC, 24, unsigned int)
#define HTCACOUSTICPROG 0x30100003
#define HTCACOUSTICVERS 0
#define ONCRPC_ALLOC_ACOUSTIC_MEM_PROC (1)
#define ONCRPC_UPDATE_ADIE_PROC (2)
#define ONCRPC_ENABLE_AUX_PGA_LOOPBACK_PROC (3)
#define ONCRPC_FORCE_HEADSET_SPEAKER_PROC (4)
#define HTC_ACOUSTIC_TABLE_SIZE (0x20000)
#define D(fmt, args...) printk(KERN_INFO "htc-acoustic: "fmt, ##args)
#define E(fmt, args...) printk(KERN_ERR "htc-acoustic: "fmt, ##args)
static uint32_t htc_acoustic_vir_addr;
static struct msm_rpc_endpoint *endpoint;
static struct mutex api_lock;
static struct mutex rpc_connect_lock;
static struct qsd_acoustic_ops *the_ops;
void acoustic_register_ops(struct qsd_acoustic_ops *ops)
{
the_ops = ops;
}
static int is_rpc_connect(void)
{
mutex_lock(&rpc_connect_lock);
if (endpoint == NULL) {
endpoint = msm_rpc_connect(HTCACOUSTICPROG,
HTCACOUSTICVERS, 0);
if (IS_ERR(endpoint)) {
pr_err("%s: init rpc failed! rc = %ld\n",
__func__, PTR_ERR(endpoint));
mutex_unlock(&rpc_connect_lock);
return -1;
}
}
mutex_unlock(&rpc_connect_lock);
return 0;
}
int turn_mic_bias_on(int on)
{
D("%s called %d\n", __func__, on);
if (the_ops->enable_mic_bias)
the_ops->enable_mic_bias(on);
return 0;
}
EXPORT_SYMBOL(turn_mic_bias_on);
int force_headset_speaker_on(int enable)
{
struct speaker_headset_req {
struct rpc_request_hdr hdr;
uint32_t enable;
} spkr_req;
D("%s called %d\n", __func__, enable);
if (is_rpc_connect() == -1)
return -1;
spkr_req.enable = cpu_to_be32(enable);
return msm_rpc_call(endpoint,
ONCRPC_FORCE_HEADSET_SPEAKER_PROC,
&spkr_req, sizeof(spkr_req), 5 * HZ);
}
EXPORT_SYMBOL(force_headset_speaker_on);
int enable_aux_loopback(uint32_t enable)
{
struct aux_loopback_req {
struct rpc_request_hdr hdr;
uint32_t enable;
} aux_req;
D("%s called %d\n", __func__, enable);
if (is_rpc_connect() == -1)
return -1;
aux_req.enable = cpu_to_be32(enable);
return msm_rpc_call(endpoint,
ONCRPC_ENABLE_AUX_PGA_LOOPBACK_PROC,
&aux_req, sizeof(aux_req), 5 * HZ);
}
EXPORT_SYMBOL(enable_aux_loopback);
static int acoustic_mmap(struct file *file, struct vm_area_struct *vma)
{
unsigned long pgoff;
int rc = -EINVAL;
size_t size;
D("mmap\n");
mutex_lock(&api_lock);
size = vma->vm_end - vma->vm_start;
if (vma->vm_pgoff != 0) {
E("mmap failed: page offset %lx\n", vma->vm_pgoff);
goto done;
}
if (!htc_acoustic_vir_addr) {
E("mmap failed: smem region not allocated\n");
rc = -EIO;
goto done;
}
pgoff = MSM_SHARED_RAM_PHYS +
(htc_acoustic_vir_addr - (uint32_t)MSM_SHARED_RAM_BASE);
pgoff = ((pgoff + 4095) & ~4095);
htc_acoustic_vir_addr = ((htc_acoustic_vir_addr + 4095) & ~4095);
if (pgoff <= 0) {
E("pgoff wrong. %ld\n", pgoff);
goto done;
}
if (size <= HTC_ACOUSTIC_TABLE_SIZE) {
pgoff = pgoff >> PAGE_SHIFT;
} else {
E("size > HTC_ACOUSTIC_TABLE_SIZE %d\n", size);
goto done;
}
vma->vm_flags |= VM_IO | VM_RESERVED;
rc = io_remap_pfn_range(vma, vma->vm_start, pgoff,
size, vma->vm_page_prot);
if (rc < 0)
E("mmap failed: remap error %d\n", rc);
done: mutex_unlock(&api_lock);
return rc;
}
static int acoustic_open(struct inode *inode, struct file *file)
{
int reply_value;
int rc = -EIO;
struct set_smem_req {
struct rpc_request_hdr hdr;
uint32_t size;
} req_smem;
struct set_smem_rep {
struct rpc_reply_hdr hdr;
int n;
} rep_smem;
D("open\n");
mutex_lock(&api_lock);
if (!htc_acoustic_vir_addr) {
if (is_rpc_connect() == -1)
goto done;
req_smem.size = cpu_to_be32(HTC_ACOUSTIC_TABLE_SIZE);
rc = msm_rpc_call_reply(endpoint,
ONCRPC_ALLOC_ACOUSTIC_MEM_PROC,
&req_smem, sizeof(req_smem),
&rep_smem, sizeof(rep_smem),
5 * HZ);
reply_value = be32_to_cpu(rep_smem.n);
if (reply_value != 0 || rc < 0) {
E("open failed: ALLOC_ACOUSTIC_MEM_PROC error %d.\n",
rc);
goto done;
}
htc_acoustic_vir_addr =
(uint32_t)smem_alloc(SMEM_ID_VENDOR1,
HTC_ACOUSTIC_TABLE_SIZE);
if (!htc_acoustic_vir_addr) {
E("open failed: smem_alloc error\n");
goto done;
}
}
rc = 0;
done:
mutex_unlock(&api_lock);
return rc;
}
static int acoustic_release(struct inode *inode, struct file *file)
{
D("release\n");
return 0;
}
static long acoustic_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int rc, reply_value;
D("ioctl\n");
mutex_lock(&api_lock);
switch (cmd) {
case ACOUSTIC_UPDATE_ADIE: {
struct update_adie_req {
struct rpc_request_hdr hdr;
int id;
} adie_req;
struct update_adie_rep {
struct rpc_reply_hdr hdr;
int ret;
} adie_rep;
D("ioctl: ACOUSTIC_UPDATE_ADIE called %d.\n", current->pid);
adie_req.id = cpu_to_be32(-1); /* update all codecs */
rc = msm_rpc_call_reply(endpoint,
ONCRPC_UPDATE_ADIE_PROC, &adie_req,
sizeof(adie_req), &adie_rep,
sizeof(adie_rep), 5 * HZ);
reply_value = be32_to_cpu(adie_rep.ret);
if (reply_value != 0 || rc < 0) {
E("ioctl failed: ONCRPC_UPDATE_ADIE_PROC "\
"error %d.\n", rc);
if (rc >= 0)
rc = -EIO;
break;
}
D("ioctl: ONCRPC_UPDATE_ADIE_PROC success.\n");
break;
}
default:
E("ioctl: invalid command\n");
rc = -EINVAL;
}
mutex_unlock(&api_lock);
return rc;
}
struct rpc_set_uplink_mute_args {
int mute;
};
static struct file_operations acoustic_fops = {
.owner = THIS_MODULE,
.open = acoustic_open,
.release = acoustic_release,
.mmap = acoustic_mmap,
.unlocked_ioctl = acoustic_ioctl,
};
static struct miscdevice acoustic_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "htc-acoustic",
.fops = &acoustic_fops,
};
static int __init acoustic_init(void)
{
mutex_init(&api_lock);
mutex_init(&rpc_connect_lock);
return misc_register(&acoustic_misc);
}
static void __exit acoustic_exit(void)
{
misc_deregister(&acoustic_misc);
}
module_init(acoustic_init);
module_exit(acoustic_exit);