267 lines
5.8 KiB
C
267 lines
5.8 KiB
C
|
/* arch/arm/mach-msm/htc_acoustic.c
|
||
|
*
|
||
|
* Copyright (C) 2007-2008 HTC Corporation
|
||
|
* Author: Laurence Chen <Laurence_Chen@htc.com>
|
||
|
*
|
||
|
* 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/sched.h>
|
||
|
|
||
|
#include <mach/msm_smd.h>
|
||
|
#include <mach/msm_rpcrouter.h>
|
||
|
#include <mach/msm_iomap.h>
|
||
|
|
||
|
#include "smd_private.h"
|
||
|
|
||
|
#define ACOUSTIC_IOCTL_MAGIC 'p'
|
||
|
#define ACOUSTIC_ARM11_DONE _IOW(ACOUSTIC_IOCTL_MAGIC, 22, unsigned int)
|
||
|
|
||
|
#define HTCRPOG 0x30100002
|
||
|
#define HTCVERS MSM_RPC_VERS(0,0)
|
||
|
#define ONCRPC_SET_MIC_BIAS_PROC (1)
|
||
|
#define ONCRPC_ACOUSTIC_INIT_PROC (5)
|
||
|
#define ONCRPC_ALLOC_ACOUSTIC_MEM_PROC (6)
|
||
|
|
||
|
#define HTC_ACOUSTIC_TABLE_SIZE (0x10000)
|
||
|
|
||
|
#define D(fmt, args...) printk(KERN_INFO "htc-acoustic: "fmt, ##args)
|
||
|
#define E(fmt, args...) printk(KERN_ERR "htc-acoustic: "fmt, ##args)
|
||
|
|
||
|
struct set_smem_req {
|
||
|
struct rpc_request_hdr hdr;
|
||
|
uint32_t size;
|
||
|
};
|
||
|
|
||
|
struct set_smem_rep {
|
||
|
struct rpc_reply_hdr hdr;
|
||
|
int n;
|
||
|
};
|
||
|
|
||
|
struct set_acoustic_req {
|
||
|
struct rpc_request_hdr hdr;
|
||
|
};
|
||
|
|
||
|
struct set_acoustic_rep {
|
||
|
struct rpc_reply_hdr hdr;
|
||
|
int n;
|
||
|
};
|
||
|
|
||
|
static uint32_t htc_acoustic_vir_addr;
|
||
|
static struct msm_rpc_endpoint *endpoint;
|
||
|
static struct mutex api_lock;
|
||
|
static struct mutex rpc_connect_mutex;
|
||
|
|
||
|
static int is_rpc_connect(void)
|
||
|
{
|
||
|
mutex_lock(&rpc_connect_mutex);
|
||
|
if (endpoint == NULL) {
|
||
|
endpoint = msm_rpc_connect(HTCRPOG, HTCVERS, 0);
|
||
|
if (IS_ERR(endpoint)) {
|
||
|
pr_err("%s: init rpc failed! rc = %ld\n",
|
||
|
__func__, PTR_ERR(endpoint));
|
||
|
mutex_unlock(&rpc_connect_mutex);
|
||
|
return 0;
|
||
|
}
|
||
|
}
|
||
|
mutex_unlock(&rpc_connect_mutex);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
int turn_mic_bias_on(int on)
|
||
|
{
|
||
|
struct mic_bias_req {
|
||
|
struct rpc_request_hdr hdr;
|
||
|
uint32_t on;
|
||
|
} req;
|
||
|
|
||
|
if (!is_rpc_connect())
|
||
|
return -1;
|
||
|
|
||
|
req.on = cpu_to_be32(on);
|
||
|
return msm_rpc_call(endpoint, ONCRPC_SET_MIC_BIAS_PROC,
|
||
|
&req, sizeof(req), 5 * HZ);
|
||
|
}
|
||
|
EXPORT_SYMBOL(turn_mic_bias_on);
|
||
|
|
||
|
static int acoustic_mmap(struct file *file, struct vm_area_struct *vma)
|
||
|
{
|
||
|
unsigned long pgoff, delta;
|
||
|
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);
|
||
|
delta = PAGE_ALIGN(pgoff) - pgoff;
|
||
|
|
||
|
if (size + delta > HTC_ACOUSTIC_TABLE_SIZE) {
|
||
|
E("mmap failed: size %d\n", size);
|
||
|
goto done;
|
||
|
}
|
||
|
|
||
|
pgoff += delta;
|
||
|
vma->vm_flags |= VM_IO | VM_RESERVED;
|
||
|
|
||
|
rc = io_remap_pfn_range(vma, vma->vm_start, pgoff >> PAGE_SHIFT,
|
||
|
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 rc = -EIO;
|
||
|
struct set_smem_req req_smem;
|
||
|
struct set_smem_rep rep_smem;
|
||
|
|
||
|
D("open\n");
|
||
|
|
||
|
mutex_lock(&api_lock);
|
||
|
|
||
|
if (!htc_acoustic_vir_addr) {
|
||
|
if (!is_rpc_connect())
|
||
|
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);
|
||
|
|
||
|
if (rep_smem.n != 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;
|
||
|
struct set_acoustic_req req;
|
||
|
struct set_acoustic_rep rep;
|
||
|
|
||
|
D("ioctl\n");
|
||
|
|
||
|
mutex_lock(&api_lock);
|
||
|
|
||
|
switch (cmd) {
|
||
|
case ACOUSTIC_ARM11_DONE:
|
||
|
D("ioctl: ACOUSTIC_ARM11_DONE called %d.\n", current->pid);
|
||
|
rc = msm_rpc_call_reply(endpoint,
|
||
|
ONCRPC_ACOUSTIC_INIT_PROC, &req,
|
||
|
sizeof(req), &rep, sizeof(rep),
|
||
|
5 * HZ);
|
||
|
|
||
|
reply_value = be32_to_cpu(rep.n);
|
||
|
if (reply_value != 0 || rc < 0) {
|
||
|
E("ioctl failed: ONCRPC_ACOUSTIC_INIT_PROC "\
|
||
|
"error %d.\n", rc);
|
||
|
if (rc >= 0)
|
||
|
rc = -EIO;
|
||
|
break;
|
||
|
}
|
||
|
D("ioctl: ONCRPC_ACOUSTIC_INIT_PROC success.\n");
|
||
|
break;
|
||
|
default:
|
||
|
E("ioctl: invalid command\n");
|
||
|
rc = -EINVAL;
|
||
|
}
|
||
|
|
||
|
mutex_unlock(&api_lock);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
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_mutex);
|
||
|
return misc_register(&acoustic_misc);
|
||
|
}
|
||
|
|
||
|
static void __exit acoustic_exit(void)
|
||
|
{
|
||
|
misc_deregister(&acoustic_misc);
|
||
|
}
|
||
|
|
||
|
module_init(acoustic_init);
|
||
|
module_exit(acoustic_exit);
|
||
|
|
||
|
MODULE_AUTHOR("Laurence Chen <Laurence_Chen@htc.com>");
|
||
|
MODULE_DESCRIPTION("HTC acoustic driver");
|
||
|
MODULE_LICENSE("GPL");
|