android_kernel_cmhtcleo/arch/arm/mach-msm/qdsp6/msm_q6vdec.c

990 lines
24 KiB
C
Raw Normal View History

2010-08-27 09:19:57 +00:00
/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Code Aurora Forum nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
#define DEBUG_TRACE_VDEC
#define DEBUG
*/
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/wakelock.h>
#include <linux/android_pmem.h>
#include <linux/msm_q6vdec.h>
#include "dal.h"
#define DALDEVICEID_VDEC_DEVICE 0x02000026
#define DALDEVICEID_VDEC_PORTNAME "DSP_DAL_AQ_VID"
#define VDEC_INTERFACE_VERSION 0x00020000
#define MAJOR_MASK 0xFFFF0000
#define MINOR_MASK 0x0000FFFF
#define VDEC_GET_MAJOR_VERSION(version) (((version)&MAJOR_MASK)>>16)
#define VDEC_GET_MINOR_VERSION(version) ((version)&MINOR_MASK)
#ifdef DEBUG_TRACE_VDEC
#define TRACE(fmt,x...) \
do { pr_debug("%s:%d " fmt, __func__, __LINE__, ##x); } while (0)
#else
#define TRACE(fmt, x...) do { } while (0)
#endif
#define MAX_SUPPORTED_INSTANCES 2
enum {
VDEC_DALRPC_INITIALIZE = DAL_OP_FIRST_DEVICE_API,
VDEC_DALRPC_SETBUFFERS,
VDEC_DALRPC_FREEBUFFERS,
VDEC_DALRPC_QUEUE,
VDEC_DALRPC_SIGEOFSTREAM,
VDEC_DALRPC_FLUSH,
VDEC_DALRPC_REUSEFRAMEBUFFER,
VDEC_DALRPC_GETDECATTRIBUTES,
};
enum {
VDEC_ASYNCMSG_DECODE_DONE = 0xdec0de00,
VDEC_ASYNCMSG_REUSE_FRAME,
};
struct vdec_init_cfg {
u32 decode_done_evt;
u32 reuse_frame_evt;
struct vdec_config cfg;
};
struct vdec_buffer_status {
u32 data;
u32 status;
};
#define VDEC_MSG_MAX 128
struct vdec_msg_list {
struct list_head list;
struct vdec_msg vdec_msg;
};
struct vdec_mem_info {
u32 buf_type;
u32 id;
unsigned long phys_addr;
unsigned long len;
struct file *file;
};
struct vdec_mem_list {
struct list_head list;
struct vdec_mem_info mem;
};
struct vdec_data {
struct dal_client *vdec_handle;
struct list_head vdec_msg_list_head;
struct list_head vdec_msg_list_free;
wait_queue_head_t vdec_msg_evt;
spinlock_t vdec_list_lock;
struct list_head vdec_mem_list_head;
spinlock_t vdec_mem_list_lock;
int mem_initialized;
int running;
int close_decode;
};
static struct class *driver_class;
static dev_t vdec_device_no;
static struct cdev vdec_cdev;
static int ref_cnt;
static DEFINE_MUTEX(vdec_ref_lock);
static DEFINE_MUTEX(idlecount_lock);
static int idlecount;
static struct wake_lock wakelock;
static struct wake_lock idlelock;
static void prevent_sleep(void)
{
mutex_lock(&idlecount_lock);
if (++idlecount == 1) {
wake_lock(&idlelock);
wake_lock(&wakelock);
}
mutex_unlock(&idlecount_lock);
}
static void allow_sleep(void)
{
mutex_lock(&idlecount_lock);
if (--idlecount == 0) {
wake_unlock(&idlelock);
wake_unlock(&wakelock);
}
mutex_unlock(&idlecount_lock);
}
static inline int vdec_check_version(u32 client, u32 server)
{
int ret = -EINVAL;
if ((VDEC_GET_MAJOR_VERSION(client) == VDEC_GET_MAJOR_VERSION(server))
&& (VDEC_GET_MINOR_VERSION(client) <=
VDEC_GET_MINOR_VERSION(server)))
ret = 0;
return ret;
}
static int vdec_get_msg(struct vdec_data *vd, void *msg)
{
struct vdec_msg_list *l;
unsigned long flags;
int ret = 0;
if (!vd->running)
return -EPERM;
spin_lock_irqsave(&vd->vdec_list_lock, flags);
list_for_each_entry_reverse(l, &vd->vdec_msg_list_head, list) {
if (copy_to_user(msg, &l->vdec_msg, sizeof(struct vdec_msg)))
pr_err("vdec_get_msg failed to copy_to_user!\n");
if (l->vdec_msg.id == VDEC_MSG_REUSEINPUTBUFFER)
TRACE("reuse_input_buffer %d\n", l->vdec_msg.buf_id);
else if (l->vdec_msg.id == VDEC_MSG_FRAMEDONE)
TRACE("frame_done (stat=%d)\n",
l->vdec_msg.vfr_info.status);
else
TRACE("unknown msg (msgid=%d)\n", l->vdec_msg.id);
list_del(&l->list);
list_add(&l->list, &vd->vdec_msg_list_free);
ret = 1;
break;
}
spin_unlock_irqrestore(&vd->vdec_list_lock, flags);
if (vd->close_decode)
ret = 1;
return ret;
}
static void vdec_put_msg(struct vdec_data *vd, struct vdec_msg *msg)
{
struct vdec_msg_list *l;
unsigned long flags;
int found = 0;
spin_lock_irqsave(&vd->vdec_list_lock, flags);
list_for_each_entry(l, &vd->vdec_msg_list_free, list) {
memcpy(&l->vdec_msg, msg, sizeof(struct vdec_msg));
list_del(&l->list);
list_add(&l->list, &vd->vdec_msg_list_head);
found = 1;
break;
}
spin_unlock_irqrestore(&vd->vdec_list_lock, flags);
if (found)
wake_up(&vd->vdec_msg_evt);
else
pr_err("vdec_put_msg can't find free list!\n");
}
static struct vdec_mem_list *vdec_get_mem_from_list(struct vdec_data *vd,
u32 pmem_id, u32 buf_type)
{
struct vdec_mem_list *l;
unsigned long flags;
int found = 0;
spin_lock_irqsave(&vd->vdec_mem_list_lock, flags);
list_for_each_entry(l, &vd->vdec_mem_list_head, list) {
if (l->mem.buf_type == buf_type && l->mem.id == pmem_id) {
found = 1;
break;
}
}
spin_unlock_irqrestore(&vd->vdec_mem_list_lock, flags);
if (found)
return l;
else
return NULL;
}
static int vdec_initialize(struct vdec_data *vd, void *argp)
{
struct vdec_config_sps vdec_cfg_sps;
struct vdec_init_cfg vi_cfg;
struct vdec_buf_req vdec_buf_req;
struct u8 *header;
int ret = 0;
ret = copy_from_user(&vdec_cfg_sps,
&((struct vdec_init *)argp)->sps_cfg,
sizeof(vdec_cfg_sps));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
vi_cfg.decode_done_evt = VDEC_ASYNCMSG_DECODE_DONE;
vi_cfg.reuse_frame_evt = VDEC_ASYNCMSG_REUSE_FRAME;
memcpy(&vi_cfg.cfg, &vdec_cfg_sps.cfg, sizeof(struct vdec_config));
header = kmalloc(vdec_cfg_sps.seq.len, GFP_KERNEL);
if (!header) {
pr_err("%s: kmalloc failed\n", __func__);
return -ENOMEM;
}
ret = copy_from_user(header,
((struct vdec_init *)argp)->sps_cfg.seq.header,
vdec_cfg_sps.seq.len);
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
kfree(header);
return ret;
}
TRACE("vi_cfg: handle=%p fourcc=0x%x w=%d h=%d order=%d notify_en=%d "
"vc1_rb=%d h264_sd=%d h264_nls=%d pp_flag=%d fruc_en=%d\n",
vd->vdec_handle, vi_cfg.cfg.fourcc, vi_cfg.cfg.width,
vi_cfg.cfg.height, vi_cfg.cfg.order, vi_cfg.cfg.notify_enable,
vi_cfg.cfg.vc1_rowbase, vi_cfg.cfg.h264_startcode_detect,
vi_cfg.cfg.h264_nal_len_size, vi_cfg.cfg.postproc_flag,
vi_cfg.cfg.fruc_enable);
ret = dal_call_f13(vd->vdec_handle, VDEC_DALRPC_INITIALIZE,
&vi_cfg, sizeof(vi_cfg),
header, vdec_cfg_sps.seq.len,
&vdec_buf_req, sizeof(vdec_buf_req));
kfree(header);
if (ret)
pr_err("%s: remote function failed (%d)\n", __func__, ret);
else
ret = copy_to_user(((struct vdec_init *)argp)->buf_req,
&vdec_buf_req, sizeof(vdec_buf_req));
vd->close_decode = 0;
return ret;
}
static int vdec_setbuffers(struct vdec_data *vd, void *argp)
{
struct vdec_buffer vmem;
struct vdec_mem_list *l;
unsigned long vstart;
unsigned long flags;
struct {
uint32_t size;
struct vdec_buf_info buf;
} rpc;
uint32_t res;
int ret = 0;
vd->mem_initialized = 0;
ret = copy_from_user(&vmem, argp, sizeof(vmem));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
l = kzalloc(sizeof(struct vdec_mem_list), GFP_KERNEL);
if (!l) {
pr_err("%s: kzalloc failed!\n", __func__);
return -ENOMEM;
}
l->mem.id = vmem.pmem_id;
l->mem.buf_type = vmem.buf.buf_type;
ret = get_pmem_file(l->mem.id, &l->mem.phys_addr, &vstart,
&l->mem.len, &l->mem.file);
if (ret) {
pr_err("%s: get_pmem_fd failed\n", __func__);
goto err_get_pmem_file;
}
TRACE("pmem_id=%d (phys=0x%08lx len=0x%lx) buftype=%d num_buf=%d "
"islast=%d src_id=%d offset=0x%08x size=0x%x\n",
vmem.pmem_id, l->mem.phys_addr, l->mem.len,
vmem.buf.buf_type, vmem.buf.num_buf, vmem.buf.islast,
vmem.buf.region.src_id, vmem.buf.region.offset,
vmem.buf.region.size);
/* input buffers */
if ((vmem.buf.region.offset + vmem.buf.region.size) > l->mem.len) {
pr_err("%s: invalid input buffer offset!\n", __func__);
ret = -EINVAL;
goto err_bad_offset;
}
vmem.buf.region.offset += l->mem.phys_addr;
rpc.size = sizeof(vmem.buf);
memcpy(&rpc.buf, &vmem.buf, sizeof(struct vdec_buf_info));
ret = dal_call(vd->vdec_handle, VDEC_DALRPC_SETBUFFERS, 5,
&rpc, sizeof(rpc), &res, sizeof(res));
if (ret < 4) {
pr_err("%s: remote function failed (%d)\n", __func__, ret);
ret = -EIO;
goto err_dal_call;
}
spin_lock_irqsave(&vd->vdec_mem_list_lock, flags);
list_add(&l->list, &vd->vdec_mem_list_head);
spin_unlock_irqrestore(&vd->vdec_mem_list_lock, flags);
vd->mem_initialized = 1;
return ret;
err_dal_call:
err_bad_offset:
put_pmem_file(l->mem.file);
err_get_pmem_file:
kfree(l);
return ret;
}
static int vdec_queue(struct vdec_data *vd, void *argp)
{
struct {
uint32_t size;
struct vdec_input_buf_info buf_info;
uint32_t osize;
} rpc;
struct vdec_mem_list *l;
struct {
uint32_t result;
uint32_t size;
struct vdec_queue_status status;
} rpc_res;
u32 pmem_id;
int ret = 0;
if (!vd->mem_initialized) {
pr_err("%s: memory is not being initialized!\n", __func__);
return -EPERM;
}
ret = copy_from_user(&rpc.buf_info,
&((struct vdec_input_buf *)argp)->buffer,
sizeof(rpc.buf_info));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
ret = copy_from_user(&pmem_id,
&((struct vdec_input_buf *)argp)->pmem_id,
sizeof(u32));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
l = vdec_get_mem_from_list(vd, pmem_id, VDEC_BUFFER_TYPE_INPUT);
if (NULL == l) {
pr_err("%s: not able to find the buffer from list\n", __func__);
return -EPERM;
}
if ((rpc.buf_info.size + rpc.buf_info.offset) >= l->mem.len) {
pr_err("%s: invalid queue buffer offset!\n", __func__);
return -EINVAL;
}
rpc.buf_info.offset += l->mem.phys_addr;
rpc.size = sizeof(struct vdec_input_buf_info);
rpc.osize = sizeof(struct vdec_queue_status);
/* complete the writes to the buffer */
wmb();
ret = dal_call(vd->vdec_handle, VDEC_DALRPC_QUEUE, 8,
&rpc, sizeof(rpc), &rpc_res, sizeof(rpc_res));
if (ret < 4) {
pr_err("%s: remote function failed (%d)\n", __func__, ret);
ret = -EIO;
}
return ret;
}
static int vdec_reuse_framebuffer(struct vdec_data *vd, void *argp)
{
u32 buf_id;
int ret = 0;
ret = copy_from_user(&buf_id, argp, sizeof(buf_id));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
ret = dal_call_f0(vd->vdec_handle, VDEC_DALRPC_REUSEFRAMEBUFFER,
buf_id);
if (ret)
pr_err("%s: remote function failed (%d)\n", __func__, ret);
return ret;
}
static int vdec_flush(struct vdec_data *vd, void *argp)
{
u32 flush_type;
int ret = 0;
ret = copy_from_user(&flush_type, argp, sizeof(flush_type));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
TRACE("flush_type=%d\n", flush_type);
ret = dal_call_f0(vd->vdec_handle, VDEC_DALRPC_FLUSH, flush_type);
if (ret) {
pr_err("%s: remote function failed (%d)\n", __func__, ret);
return ret;
}
return ret;
}
static int vdec_close(struct vdec_data *vd, void *argp)
{
struct vdec_mem_list *l;
int ret = 0;
pr_info("q6vdec_close()\n");
vd->close_decode = 1;
wake_up(&vd->vdec_msg_evt);
ret = dal_call_f0(vd->vdec_handle, DAL_OP_CLOSE, 0);
if (ret)
pr_err("%s: failed to close daldevice (%d)\n", __func__, ret);
if (vd->mem_initialized) {
list_for_each_entry(l, &vd->vdec_mem_list_head, list)
put_pmem_file(l->mem.file);
}
return ret;
}
static int vdec_getdecattributes(struct vdec_data *vd, void *argp)
{
struct {
uint32_t status;
uint32_t size;
struct vdec_dec_attributes dec_attr;
} rpc;
uint32_t inp;
int ret = 0;
inp = sizeof(struct vdec_dec_attributes);
ret = dal_call(vd->vdec_handle, VDEC_DALRPC_GETDECATTRIBUTES, 9,
&inp, sizeof(inp), &rpc, sizeof(rpc));
if (ret < 4 || rpc.size != sizeof(struct vdec_dec_attributes)) {
pr_err("%s: remote function failed (%d)\n", __func__, ret);
ret = -EIO;
} else
ret =
copy_to_user(((struct vdec_dec_attributes *)argp),
&rpc.dec_attr, sizeof(rpc.dec_attr));
return ret;
}
static int vdec_freebuffers(struct vdec_data *vd, void *argp)
{
struct vdec_buffer vmem;
struct vdec_mem_list *l;
struct {
uint32_t size;
struct vdec_buf_info buf;
} rpc;
uint32_t res;
int ret = 0;
if (!vd->mem_initialized) {
pr_err("%s: memory is not being initialized!\n", __func__);
return -EPERM;
}
ret = copy_from_user(&vmem, argp, sizeof(vmem));
if (ret) {
pr_err("%s: copy_from_user failed\n", __func__);
return ret;
}
l = vdec_get_mem_from_list(vd, vmem.pmem_id, vmem.buf.buf_type);
if (NULL == l) {
pr_err("%s: not able to find the buffer from list\n", __func__);
return -EPERM;
}
/* input buffers */
if ((vmem.buf.region.offset + vmem.buf.region.size) > l->mem.len) {
pr_err("%s: invalid input buffer offset!\n", __func__);
return -EINVAL;
}
vmem.buf.region.offset += l->mem.phys_addr;
rpc.size = sizeof(vmem.buf);
memcpy(&rpc.buf, &vmem.buf, sizeof(struct vdec_buf_info));
ret = dal_call(vd->vdec_handle, VDEC_DALRPC_FREEBUFFERS, 5,
&rpc, sizeof(rpc), &res, sizeof(res));
if (ret < 4) {
pr_err("%s: remote function failed (%d)\n", __func__, ret);
}
return ret;
}
static int vdec_getversion(struct vdec_data *vd, void *argp)
{
struct vdec_version ver_info;
int ret = 0;
ver_info.major = VDEC_GET_MAJOR_VERSION(VDEC_INTERFACE_VERSION);
ver_info.minor = VDEC_GET_MINOR_VERSION(VDEC_INTERFACE_VERSION);
ret = copy_to_user(((struct vdec_version *)argp),
&ver_info, sizeof(ver_info));
return ret;
}
static long vdec_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct vdec_data *vd = file->private_data;
void __user *argp = (void __user *)arg;
int ret = 0;
if (!vd->running)
return -EPERM;
switch (cmd) {
case VDEC_IOCTL_INITIALIZE:
ret = vdec_initialize(vd, argp);
break;
case VDEC_IOCTL_SETBUFFERS:
ret = vdec_setbuffers(vd, argp);
break;
case VDEC_IOCTL_QUEUE:
TRACE("VDEC_IOCTL_QUEUE (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
ret = vdec_queue(vd, argp);
break;
case VDEC_IOCTL_REUSEFRAMEBUFFER:
TRACE("VDEC_IOCTL_REUSEFRAMEBUFFER (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
ret = vdec_reuse_framebuffer(vd, argp);
break;
case VDEC_IOCTL_FLUSH:
ret = vdec_flush(vd, argp);
break;
case VDEC_IOCTL_EOS:
TRACE("VDEC_IOCTL_EOS (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
ret = dal_call_f0(vd->vdec_handle, VDEC_DALRPC_SIGEOFSTREAM, 0);
if (ret)
pr_err("%s: remote function failed (%d)\n",
__func__, ret);
break;
case VDEC_IOCTL_GETMSG:
TRACE("VDEC_IOCTL_GETMSG (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
wait_event_interruptible(vd->vdec_msg_evt,
vdec_get_msg(vd, argp));
if (vd->close_decode)
ret = -EINTR;
else
/* order the reads from the buffer */
rmb();
break;
case VDEC_IOCTL_CLOSE:
ret = vdec_close(vd, argp);
break;
case VDEC_IOCTL_GETDECATTRIBUTES:
TRACE("VDEC_IOCTL_GETDECATTRIBUTES (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
ret = vdec_getdecattributes(vd, argp);
if (ret)
pr_err("%s: remote function failed (%d)\n",
__func__, ret);
break;
case VDEC_IOCTL_FREEBUFFERS:
TRACE("VDEC_IOCTL_FREEBUFFERS (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
ret = vdec_freebuffers(vd, argp);
if (ret)
pr_err("%s: remote function failed (%d)\n",
__func__, ret);
break;
case VDEC_IOCTL_GETVERSION:
TRACE("VDEC_IOCTL_GETVERSION (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
ret = vdec_getversion(vd, argp);
if (ret)
pr_err("%s: remote function failed (%d)\n",
__func__, ret);
break;
default:
pr_err("%s: invalid ioctl!\n", __func__);
ret = -EINVAL;
break;
}
TRACE("ioctl done (pid=%d tid=%d)\n",
current->group_leader->pid, current->pid);
return ret;
}
static void vdec_dcdone_handler(struct vdec_data *vd, void *frame,
uint32_t frame_size)
{
struct vdec_msg msg;
struct vdec_mem_list *l;
unsigned long flags;
int found = 0;
/*if (frame_size != sizeof(struct vdec_frame_info)) {*/
if (frame_size < sizeof(struct vdec_frame_info)) {
pr_warning("%s: msg size mismatch %d != %d\n", __func__,
frame_size, sizeof(struct vdec_frame_info));
return;
}
memcpy(&msg.vfr_info, (struct vdec_frame_info *)frame,
sizeof(struct vdec_frame_info));
if (msg.vfr_info.status == VDEC_FRAME_DECODE_OK) {
spin_lock_irqsave(&vd->vdec_mem_list_lock, flags);
list_for_each_entry(l, &vd->vdec_mem_list_head, list) {
if ((l->mem.buf_type == VDEC_BUFFER_TYPE_OUTPUT) &&
(msg.vfr_info.offset >= l->mem.phys_addr) &&
(msg.vfr_info.offset <
(l->mem.phys_addr + l->mem.len))) {
found = 1;
msg.vfr_info.offset -= l->mem.phys_addr;
msg.vfr_info.data2 = l->mem.id;
break;
}
}
spin_unlock_irqrestore(&vd->vdec_mem_list_lock, flags);
}
if (found || (msg.vfr_info.status != VDEC_FRAME_DECODE_OK)) {
msg.id = VDEC_MSG_FRAMEDONE;
vdec_put_msg(vd, &msg);
} else {
pr_err("%s: invalid phys addr = 0x%x\n",
__func__, msg.vfr_info.offset);
}
}
static void vdec_reuseibuf_handler(struct vdec_data *vd, void *bufstat,
uint32_t bufstat_size)
{
struct vdec_buffer_status *vdec_bufstat;
struct vdec_msg msg;
/* TODO: how do we signal the client? If they are waiting on a
* message in an ioctl, they may block forever */
if (bufstat_size != sizeof(struct vdec_buffer_status)) {
pr_warning("%s: msg size mismatch %d != %d\n", __func__,
bufstat_size, sizeof(struct vdec_buffer_status));
return;
}
vdec_bufstat = (struct vdec_buffer_status *)bufstat;
msg.id = VDEC_MSG_REUSEINPUTBUFFER;
msg.buf_id = vdec_bufstat->data;
vdec_put_msg(vd, &msg);
}
static void callback(void *data, int len, void *cookie)
{
struct vdec_data *vd = (struct vdec_data *)cookie;
uint32_t *tmp = (uint32_t *) data;
if (!vd->mem_initialized) {
pr_err("%s:memory not initialize but callback called!\n",
__func__);
return;
}
TRACE("vdec_async: tmp=0x%08x 0x%08x 0x%08x\n", tmp[0], tmp[1], tmp[2]);
switch (tmp[0]) {
case VDEC_ASYNCMSG_DECODE_DONE:
vdec_dcdone_handler(vd, &tmp[3], tmp[2]);
break;
case VDEC_ASYNCMSG_REUSE_FRAME:
vdec_reuseibuf_handler(vd, &tmp[3], tmp[2]);
break;
default:
pr_err("%s: Unknown async message from DSP id=0x%08x sz=%u\n",
__func__, tmp[0], tmp[2]);
}
}
static int vdec_open(struct inode *inode, struct file *file)
{
int ret;
int i;
struct vdec_msg_list *l;
struct vdec_data *vd;
struct dal_info version_info;
pr_info("q6vdec_open()\n");
mutex_lock(&vdec_ref_lock);
if (ref_cnt >= MAX_SUPPORTED_INSTANCES) {
pr_err("%s: Max allowed instances exceeded \n", __func__);
mutex_unlock(&vdec_ref_lock);
return -EBUSY;
}
ref_cnt++;
mutex_unlock(&vdec_ref_lock);
vd = kmalloc(sizeof(struct vdec_data), GFP_KERNEL);
if (!vd) {
pr_err("%s: kmalloc failed\n", __func__);
ret = -ENOMEM;
goto vdec_open_err_handle_vd;
}
file->private_data = vd;
vd->mem_initialized = 0;
INIT_LIST_HEAD(&vd->vdec_msg_list_head);
INIT_LIST_HEAD(&vd->vdec_msg_list_free);
INIT_LIST_HEAD(&vd->vdec_mem_list_head);
init_waitqueue_head(&vd->vdec_msg_evt);
spin_lock_init(&vd->vdec_list_lock);
spin_lock_init(&vd->vdec_mem_list_lock);
for (i = 0; i < VDEC_MSG_MAX; i++) {
l = kzalloc(sizeof(struct vdec_msg_list), GFP_KERNEL);
if (!l) {
pr_err("%s: kzalloc failed!\n", __func__);
ret = -ENOMEM;
goto vdec_open_err_handle_list;
}
list_add(&l->list, &vd->vdec_msg_list_free);
}
vd->vdec_handle = dal_attach(DALDEVICEID_VDEC_DEVICE,
DALDEVICEID_VDEC_PORTNAME,
callback, vd);
if (!vd->vdec_handle) {
pr_err("%s: failed to attach \n", __func__);
ret = -EIO;
goto vdec_open_err_handle_list;
}
ret = dal_call_f9(vd->vdec_handle, DAL_OP_INFO,
&version_info, sizeof(struct dal_info));
if (ret) {
pr_err("%s: failed to get version \n", __func__);
goto vdec_open_err_handle_version;
}
TRACE("q6vdec_open() interface version 0x%x\n", version_info.version);
if (vdec_check_version(VDEC_INTERFACE_VERSION,
version_info.version)) {
pr_err("%s: driver version mismatch !\n", __func__);
goto vdec_open_err_handle_version;
}
vd->running = 1;
prevent_sleep();
return 0;
vdec_open_err_handle_version:
dal_detach(vd->vdec_handle);
vdec_open_err_handle_list:
{
struct vdec_msg_list *l, *n;
list_for_each_entry_safe(l, n, &vd->vdec_msg_list_free, list) {
list_del(&l->list);
kfree(l);
}
}
vdec_open_err_handle_vd:
mutex_lock(&vdec_ref_lock);
ref_cnt--;
mutex_unlock(&vdec_ref_lock);
kfree(vd);
return ret;
}
static int vdec_release(struct inode *inode, struct file *file)
{
int ret;
struct vdec_msg_list *l, *n;
struct vdec_mem_list *m, *k;
struct vdec_data *vd = file->private_data;
vd->running = 0;
wake_up_all(&vd->vdec_msg_evt);
if (!vd->close_decode)
vdec_close(vd, NULL);
ret = dal_detach(vd->vdec_handle);
if (ret)
printk(KERN_INFO "%s: failed to detach (%d)\n", __func__, ret);
list_for_each_entry_safe(l, n, &vd->vdec_msg_list_free, list) {
list_del(&l->list);
kfree(l);
}
list_for_each_entry_safe(l, n, &vd->vdec_msg_list_head, list) {
list_del(&l->list);
kfree(l);
}
list_for_each_entry_safe(m, k, &vd->vdec_mem_list_head, list) {
list_del(&m->list);
kfree(m);
}
mutex_lock(&vdec_ref_lock);
BUG_ON(ref_cnt <= 0);
ref_cnt--;
mutex_unlock(&vdec_ref_lock);
kfree(vd);
allow_sleep();
return 0;
}
static const struct file_operations vdec_fops = {
.owner = THIS_MODULE,
.open = vdec_open,
.release = vdec_release,
.unlocked_ioctl = vdec_ioctl,
};
static int __init vdec_init(void)
{
struct device *class_dev;
int rc = 0;
wake_lock_init(&idlelock, WAKE_LOCK_IDLE, "vdec_idle");
wake_lock_init(&wakelock, WAKE_LOCK_SUSPEND, "vdec_suspend");
rc = alloc_chrdev_region(&vdec_device_no, 0, 1, "vdec");
if (rc < 0) {
pr_err("%s: alloc_chrdev_region failed %d\n", __func__, rc);
return rc;
}
driver_class = class_create(THIS_MODULE, "vdec");
if (IS_ERR(driver_class)) {
rc = -ENOMEM;
pr_err("%s: class_create failed %d\n", __func__, rc);
goto vdec_init_err_unregister_chrdev_region;
}
class_dev = device_create(driver_class, NULL,
vdec_device_no, NULL, "vdec");
if (!class_dev) {
pr_err("%s: class_device_create failed %d\n", __func__, rc);
rc = -ENOMEM;
goto vdec_init_err_class_destroy;
}
cdev_init(&vdec_cdev, &vdec_fops);
vdec_cdev.owner = THIS_MODULE;
rc = cdev_add(&vdec_cdev, MKDEV(MAJOR(vdec_device_no), 0), 1);
if (rc < 0) {
pr_err("%s: cdev_add failed %d\n", __func__, rc);
goto vdec_init_err_class_device_destroy;
}
return 0;
vdec_init_err_class_device_destroy:
device_destroy(driver_class, vdec_device_no);
vdec_init_err_class_destroy:
class_destroy(driver_class);
vdec_init_err_unregister_chrdev_region:
unregister_chrdev_region(vdec_device_no, 1);
return rc;
}
static void __exit vdec_exit(void)
{
device_destroy(driver_class, vdec_device_no);
class_destroy(driver_class);
unregister_chrdev_region(vdec_device_no, 1);
}
MODULE_DESCRIPTION("video decoder driver for QSD platform");
MODULE_VERSION("2.00");
module_init(vdec_init);
module_exit(vdec_exit);