- 根目录:
- drivers
- gpu
- drm
- exynos
- exynos_drm_ipp.c
/*
* Copyright (C) 2012 Samsung Electronics Co.Ltd
* Authors:
* Eunchul Kim <chulspro.kim@samsung.com>
* Jinyoung Jeon <jy0.jeon@samsung.com>
* Sangmin Lee <lsmin.lee@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <drm/drmP.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_gem.h"
#include "exynos_drm_ipp.h"
#include "exynos_drm_iommu.h"
/*
* IPP stands for Image Post Processing and
* supports image scaler/rotator and input/output DMA operations.
* using FIMC, GSC, Rotator, so on.
* IPP is integration device driver of same attribute h/w
*/
/*
* TODO
* 1. expand command control id.
* 2. integrate property and config.
* 3. removed send_event id check routine.
* 4. compare send_event id if needed.
* 5. free subdrv_remove notifier callback list if needed.
* 6. need to check subdrv_open about multi-open.
* 7. need to power_on implement power and sysmmu ctrl.
*/
#define get_ipp_context(dev) platform_get_drvdata(to_platform_device(dev))
#define ipp_is_m2m_cmd(c) (c == IPP_CMD_M2M)
/*
* A structure of event.
*
* @base: base of event.
* @event: ipp event.
*/
struct drm_exynos_ipp_send_event {
struct drm_pending_event base;
struct drm_exynos_ipp_event event;
};
/*
* A structure of memory node.
*
* @list: list head to memory queue information.
* @ops_id: id of operations.
* @prop_id: id of property.
* @buf_id: id of buffer.
* @buf_info: gem objects and dma address, size.
* @filp: a pointer to drm_file.
*/
struct drm_exynos_ipp_mem_node {
struct list_head list;
enum drm_exynos_ops_id ops_id;
u32 prop_id;
u32 buf_id;
struct drm_exynos_ipp_buf_info buf_info;
};
/*
* A structure of ipp context.
*
* @subdrv: prepare initialization using subdrv.
* @ipp_lock: lock for synchronization of access to ipp_idr.
* @prop_lock: lock for synchronization of access to prop_idr.
* @ipp_idr: ipp driver idr.
* @prop_idr: property idr.
* @event_workq: event work queue.
* @cmd_workq: command work queue.
*/
struct ipp_context {
struct exynos_drm_subdrv subdrv;
struct mutex ipp_lock;
struct mutex prop_lock;
struct idr ipp_idr;
struct idr prop_idr;
struct workqueue_struct *event_workq;
struct workqueue_struct *cmd_workq;
};
static LIST_HEAD(exynos_drm_ippdrv_list);
static DEFINE_MUTEX(exynos_drm_ippdrv_lock);
static BLOCKING_NOTIFIER_HEAD(exynos_drm_ippnb_list);
int exynos_drm_ippdrv_register(struct exynos_drm_ippdrv *ippdrv)
{
mutex_lock(&exynos_drm_ippdrv_lock);
list_add_tail(&ippdrv->drv_list, &exynos_drm_ippdrv_list);
mutex_unlock(&exynos_drm_ippdrv_lock);
return 0;
}
int exynos_drm_ippdrv_unregister(struct exynos_drm_ippdrv *ippdrv)
{
mutex_lock(&exynos_drm_ippdrv_lock);
list_del(&ippdrv->drv_list);
mutex_unlock(&exynos_drm_ippdrv_lock);
return 0;
}
static int ipp_create_id(struct idr *id_idr, struct mutex *lock, void *obj)
{
int ret;
mutex_lock(lock);
ret = idr_alloc(id_idr, obj, 1, 0, GFP_KERNEL);
mutex_unlock(lock);
return ret;
}
static void ipp_remove_id(struct idr *id_idr, struct mutex *lock, u32 id)
{
mutex_lock(lock);
idr_remove(id_idr, id);
mutex_unlock(lock);
}
static void *ipp_find_obj(struct idr *id_idr, struct mutex *lock, u32 id)
{
void *obj;
mutex_lock(lock);
obj = idr_find(id_idr, id);
mutex_unlock(lock);
return obj;
}
static int ipp_check_driver(struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_property *property)
{
if (ippdrv->dedicated || (!ipp_is_m2m_cmd(property->cmd) &&
!pm_runtime_suspended(ippdrv->dev)))
return -EBUSY;
if (ippdrv->check_property &&
ippdrv->check_property(ippdrv->dev, property))
return -EINVAL;
return 0;
}
static struct exynos_drm_ippdrv *ipp_find_driver(struct ipp_context *ctx,
struct drm_exynos_ipp_property *property)
{
struct exynos_drm_ippdrv *ippdrv;
u32 ipp_id = property->ipp_id;
int ret;
if (ipp_id) {
ippdrv = ipp_find_obj(&ctx->ipp_idr, &ctx->ipp_lock, ipp_id);
if (!ippdrv) {
DRM_DEBUG("ipp%d driver not found\n", ipp_id);
return ERR_PTR(-ENODEV);
}
ret = ipp_check_driver(ippdrv, property);
if (ret < 0) {
DRM_DEBUG("ipp%d driver check error %d\n", ipp_id, ret);
return ERR_PTR(ret);
}
return ippdrv;
} else {
list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
ret = ipp_check_driver(ippdrv, property);
if (ret == 0)
return ippdrv;
}
DRM_DEBUG("cannot find driver suitable for given property.\n");
}
return ERR_PTR(-ENODEV);
}
static struct exynos_drm_ippdrv *ipp_find_drv_by_handle(u32 prop_id)
{
struct exynos_drm_ippdrv *ippdrv;
struct drm_exynos_ipp_cmd_node *c_node;
int count = 0;
DRM_DEBUG_KMS("prop_id[%d]\n", prop_id);
/*
* This case is search ipp driver by prop_id handle.
* sometimes, ipp subsystem find driver by prop_id.
* e.g PAUSE state, queue buf, command control.
*/
list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]\n", count++, (int)ippdrv);
mutex_lock(&ippdrv->cmd_lock);
list_for_each_entry(c_node, &ippdrv->cmd_list, list) {
if (c_node->property.prop_id == prop_id) {
mutex_unlock(&ippdrv->cmd_lock);
return ippdrv;
}
}
mutex_unlock(&ippdrv->cmd_lock);
}
return ERR_PTR(-ENODEV);
}
int exynos_drm_ipp_get_property(struct drm_device *drm_dev, void *data,
struct drm_file *file)
{
struct drm_exynos_file_private *file_priv = file->driver_priv;
struct device *dev = file_priv->ipp_dev;
struct ipp_context *ctx = get_ipp_context(dev);
struct drm_exynos_ipp_prop_list *prop_list = data;
struct exynos_drm_ippdrv *ippdrv;
int count = 0;
if (!ctx) {
DRM_ERROR("invalid context.\n");
return -EINVAL;
}
if (!prop_list) {
DRM_ERROR("invalid property parameter.\n");
return -EINVAL;
}
DRM_DEBUG_KMS("ipp_id[%d]\n", prop_list->ipp_id);
if (!prop_list->ipp_id) {
list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list)
count++;
/*
* Supports ippdrv list count for user application.
* First step user application getting ippdrv count.
* and second step getting ippdrv capability using ipp_id.
*/
prop_list->count = count;
} else {
/*
* Getting ippdrv capability by ipp_id.
* some device not supported wb, output interface.
* so, user application detect correct ipp driver
* using this ioctl.
*/
ippdrv = ipp_find_obj(&ctx->ipp_idr, &ctx->ipp_lock,
prop_list->ipp_id);
if (!ippdrv) {
DRM_ERROR("not found ipp%d driver.\n",
prop_list->ipp_id);
return -ENODEV;
}
*prop_list = ippdrv->prop_list;
}
return 0;
}
static void ipp_print_property(struct drm_exynos_ipp_property *property,
int idx)
{
struct drm_exynos_ipp_config *config = &property->config[idx];
struct drm_exynos_pos *pos = &config->pos;
struct drm_exynos_sz *sz = &config->sz;
DRM_DEBUG_KMS("prop_id[%d]ops[%s]fmt[0x%x]\n",
property->prop_id, idx ? "dst" : "src", config->fmt);
DRM_DEBUG_KMS("pos[%d %d %d %d]sz[%d %d]f[%d]r[%d]\n",
pos->x, pos->y, pos->w, pos->h,
sz->hsize, sz->vsize, config->flip, config->degree);
}
static struct drm_exynos_ipp_cmd_work *ipp_create_cmd_work(void)
{
struct drm_exynos_ipp_cmd_work *cmd_work;
cmd_work = kzalloc(sizeof(*cmd_work), GFP_KERNEL);
if (!cmd_work)
return ERR_PTR(-ENOMEM);
INIT_WORK((struct work_struct *)cmd_work, ipp_sched_cmd);
return cmd_work;
}
static struct drm_exynos_ipp_event_work *ipp_create_event_work(void)
{
struct drm_exynos_ipp_event_work *event_work;
event_work = kzalloc(sizeof(*event_work), GFP_KERNEL);
if (!event_work)
return ERR_PTR(-ENOMEM);
INIT_WORK(&event_work->work, ipp_sched_event);
return event_work;
}
int exynos_drm_ipp_set_property(struct drm_device *drm_dev, void *data,
struct drm_file *file)
{
struct drm_exynos_file_private *file_priv = file->driver_priv;
struct device *dev = file_priv->ipp_dev;
struct ipp_context *ctx = get_ipp_context(dev);
struct drm_exynos_ipp_property *property = data;
struct exynos_drm_ippdrv *ippdrv;
struct drm_exynos_ipp_cmd_node *c_node;
u32 prop_id;
int ret, i;
if (!ctx) {
DRM_ERROR("invalid context.\n");
return -EINVAL;
}
if (!property) {
DRM_ERROR("invalid property parameter.\n");
return -EINVAL;
}
prop_id = property->prop_id;
/*
* This is log print for user application property.
* user application set various property.
*/
for_each_ipp_ops(i)
ipp_print_property(property, i);
/*
* In case prop_id is not zero try to set existing property.
*/
if (prop_id) {
c_node = ipp_find_obj(&ctx->prop_idr, &ctx->prop_lock, prop_id);
if (!c_node || c_node->filp != file) {
DRM_DEBUG_KMS("prop_id[%d] not found\n", prop_id);
return -EINVAL;
}
if (c_node->state != IPP_STATE_STOP) {
DRM_DEBUG_KMS("prop_id[%d] not stopped\n", prop_id);
return -EINVAL;
}
c_node->property = *property;
return 0;
}
/* find ipp driver using ipp id */
ippdrv = ipp_find_driver(ctx, property);
if (IS_ERR(ippdrv)) {
DRM_ERROR("failed to get ipp driver.\n");
return -EINVAL;
}
/* allocate command node */
c_node = kzalloc(sizeof(*c_node), GFP_KERNEL);
if (!c_node)
return -ENOMEM;
ret = ipp_create_id(&ctx->prop_idr, &ctx->prop_lock, c_node);
if (ret < 0) {
DRM_ERROR("failed to create id.\n");
goto err_clear;
}
property->prop_id = ret;
DRM_DEBUG_KMS("created prop_id[%d]cmd[%d]ippdrv[0x%x]\n",
property->prop_id, property->cmd, (int)ippdrv);
/* stored property information and ippdrv in private data */
c_node->property = *property;
c_node->state = IPP_STATE_IDLE;
c_node->filp = file;
c_node->start_work = ipp_create_cmd_work();
if (IS_ERR(c_node->start_work)) {
DRM_ERROR("failed to create start work.\n");
ret = PTR_ERR(c_node->start_work);
goto err_remove_id;
}
c_node->stop_work = ipp_create_cmd_work();
if (IS_ERR(c_node->stop_work)) {
DRM_ERROR("failed to create stop work.\n");
ret = PTR_ERR(c_node->stop_work);
goto err_free_start;
}
c_node->event_work = ipp_create_event_work();
if (IS_ERR(c_node->event_work)) {
DRM_ERROR("failed to create event work.\n");
ret = PTR_ERR(c_node->event_work);
goto err_free_stop;
}
mutex_init(&c_node->lock);
mutex_init(&c_node->mem_lock);
mutex_init(&c_node->event_lock);
init_completion(&c_node->start_complete);
init_completion(&c_node->stop_complete);
for_each_ipp_ops(i)
INIT_LIST_HEAD(&c_node->mem_list[i]);
INIT_LIST_HEAD(&c_node->event_list);
mutex_lock(&ippdrv->cmd_lock);
list_add_tail(&c_node->list, &ippdrv->cmd_list);
mutex_unlock(&ippdrv->cmd_lock);
/* make dedicated state without m2m */
if (!ipp_is_m2m_cmd(property->cmd))
ippdrv->dedicated = true;
return 0;
err_free_stop:
kfree(c_node->stop_work);
err_free_start:
kfree(c_node->start_work);
err_remove_id:
ipp_remove_id(&ctx->prop_idr, &ctx->prop_lock, property->prop_id);
err_clear:
kfree(c_node);
return ret;
}
static int ipp_validate_mem_node(struct drm_device *drm_dev,
struct drm_exynos_ipp_mem_node *m_node,
struct drm_exynos_ipp_cmd_node *c_node)
{
struct drm_exynos_ipp_config *ipp_cfg;
unsigned int num_plane;
unsigned long size, buf_size = 0, plane_size, img_size = 0;
unsigned int bpp, width, height;
int i;
ipp_cfg = &c_node->property.config[m_node->ops_id];
num_plane = drm_format_num_planes(ipp_cfg->fmt);
/**
* This is a rather simplified validation of a memory node.
* It basically verifies provided gem object handles
* and the buffer sizes with respect to current configuration.
* This is not the best that can be done
* but it seems more than enough
*/
for (i = 0; i < num_plane; ++i) {
width = ipp_cfg->sz.hsize;
height = ipp_cfg->sz.vsize;
bpp = drm_format_plane_cpp(ipp_cfg->fmt, i);
/*
* The result of drm_format_plane_cpp() for chroma planes must
* be used with drm_format_xxxx_chroma_subsampling() for
* correct result.
*/
if (i > 0) {
width /= drm_format_horz_chroma_subsampling(
ipp_cfg->fmt);
height /= drm_format_vert_chroma_subsampling(
ipp_cfg->fmt);
}
plane_size = width * height * bpp;
img_size += plane_size;
if (m_node->buf_info.handles[i]) {
size = exynos_drm_gem_get_size(drm_dev,
m_node->buf_info.handles[i],
c_node->filp);
if (plane_size > size) {
DRM_ERROR(
"buffer %d is smaller than required\n",
i);
return -EINVAL;
}
buf_size += size;
}
}
if (buf_size < img_size) {
DRM_ERROR("size of buffers(%lu) is smaller than image(%lu)\n",
buf_size, img_size);
return -EINVAL;
}
return 0;
}
static int ipp_put_mem_node(struct drm_device *drm_dev,
struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_mem_node *m_node)
{
int i;
DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
if (!m_node) {
DRM_ERROR("invalid dequeue node.\n");
return -EFAULT;
}
DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
/* put gem buffer */
for_each_ipp_planar(i) {
unsigned long handle = m_node->buf_info.handles[i];
if (handle)
exynos_drm_gem_put_dma_addr(drm_dev, handle,
c_node->filp);
}
list_del(&m_node->list);
kfree(m_node);
return 0;
}
static struct drm_exynos_ipp_mem_node
*ipp_get_mem_node(struct drm_device *drm_dev,
struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_queue_buf *qbuf)
{
struct drm_exynos_ipp_mem_node *m_node;
struct drm_exynos_ipp_buf_info *buf_info;
int i;
m_node = kzalloc(sizeof(*m_node), GFP_KERNEL);
if (!m_node)
return ERR_PTR(-ENOMEM);
buf_info = &m_node->buf_info;
/* operations, buffer id */
m_node->ops_id = qbuf->ops_id;
m_node->prop_id = qbuf->prop_id;
m_node->buf_id = qbuf->buf_id;
INIT_LIST_HEAD(&m_node->list);
DRM_DEBUG_KMS("m_node[0x%x]ops_id[%d]\n", (int)m_node, qbuf->ops_id);
DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]\n", qbuf->prop_id, m_node->buf_id);
for_each_ipp_planar(i) {
DRM_DEBUG_KMS("i[%d]handle[0x%x]\n", i, qbuf->handle[i]);
/* get dma address by handle */
if (qbuf->handle[i]) {
dma_addr_t *addr;
addr = exynos_drm_gem_get_dma_addr(drm_dev,
qbuf->handle[i], c_node->filp);
if (IS_ERR(addr)) {
DRM_ERROR("failed to get addr.\n");
ipp_put_mem_node(drm_dev, c_node, m_node);
return ERR_PTR(-EFAULT);
}
buf_info->handles[i] = qbuf->handle[i];
buf_info->base[i] = *addr;
DRM_DEBUG_KMS("i[%d]base[0x%x]hd[0x%lx]\n", i,
buf_info->base[i], buf_info->handles[i]);
}
}
mutex_lock(&c_node->mem_lock);
if (ipp_validate_mem_node(drm_dev, m_node, c_node)) {
ipp_put_mem_node(drm_dev, c_node, m_node);
mutex_unlock(&c_node->mem_lock);
return ERR_PTR(-EFAULT);
}
list_add_tail(&m_node->list, &c_node->mem_list[qbuf->ops_id]);
mutex_unlock(&c_node->mem_lock);
return m_node;
}
static void ipp_clean_mem_nodes(struct drm_device *drm_dev,
struct drm_exynos_ipp_cmd_node *c_node, int ops)
{
struct drm_exynos_ipp_mem_node *m_node, *tm_node;
struct list_head *head = &c_node->mem_list[ops];
mutex_lock(&c_node->mem_lock);
list_for_each_entry_safe(m_node, tm_node, head, list) {
int ret;
ret = ipp_put_mem_node(drm_dev, c_node, m_node);
if (ret)
DRM_ERROR("failed to put m_node.\n");
}
mutex_unlock(&c_node->mem_lock);
}
static void ipp_free_event(struct drm_pending_event *event)
{
kfree(event);
}
static int ipp_get_event(struct drm_device *drm_dev,
struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_queue_buf *qbuf)
{
struct drm_exynos_ipp_send_event *e;
unsigned long flags;
DRM_DEBUG_KMS("ops_id[%d]buf_id[%d]\n", qbuf->ops_id, qbuf->buf_id);
e = kzalloc(sizeof(*e), GFP_KERNEL);
if (!e) {
spin_lock_irqsave(&drm_dev->event_lock, flags);
c_node->filp->event_space += sizeof(e->event);
spin_unlock_irqrestore(&drm_dev->event_lock, flags);
return -ENOMEM;
}
/* make event */
e->event.base.type = DRM_EXYNOS_IPP_EVENT;
e->event.base.length = sizeof(e->event);
e->event.user_data = qbuf->user_data;
e->event.prop_id = qbuf->prop_id;
e->event.buf_id[EXYNOS_DRM_OPS_DST] = qbuf->buf_id;
e->base.event = &e->event.base;
e->base.file_priv = c_node->filp;
e->base.destroy = ipp_free_event;
mutex_lock(&c_node->event_lock);
list_add_tail(&e->base.link, &c_node->event_list);
mutex_unlock(&c_node->event_lock);
return 0;
}
static void ipp_put_event(struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_queue_buf *qbuf)
{
struct drm_exynos_ipp_send_event *e, *te;
int count = 0;
mutex_lock(&c_node->event_lock);
list_for_each_entry_safe(e, te, &c_node->event_list, base.link) {
DRM_DEBUG_KMS("count[%d]e[0x%x]\n", count++, (int)e);
/*
* qbuf == NULL condition means all event deletion.
* stop operations want to delete all event list.
* another case delete only same buf id.
*/
if (!qbuf) {
/* delete list */
list_del(&e->base.link);
kfree(e);
}
/* compare buffer id */
if (qbuf && (qbuf->buf_id ==
e->event.buf_id[EXYNOS_DRM_OPS_DST])) {
/* delete list */
list_del(&e->base.link);
kfree(e);
goto out_unlock;
}
}
out_unlock:
mutex_unlock(&c_node->event_lock);
return;
}
static void ipp_clean_cmd_node(struct ipp_context *ctx,
struct drm_exynos_ipp_cmd_node *c_node)
{
int i;
/* cancel works */
cancel_work_sync(&c_node->start_work->work);
cancel_work_sync(&c_node->stop_work->work);
cancel_work_sync(&c_node->event_work->work);
/* put event */
ipp_put_event(c_node, NULL);
for_each_ipp_ops(i)
ipp_clean_mem_nodes(ctx->subdrv.drm_dev, c_node, i);
/* delete list */
list_del(&c_node->list);
ipp_remove_id(&ctx->prop_idr, &ctx->prop_lock,
c_node->property.prop_id);
/* destroy mutex */
mutex_destroy(&c_node->lock);
mutex_destroy(&c_node->mem_lock);
mutex_destroy(&c_node->event_lock);
/* free command node */
kfree(c_node->start_work);
kfree(c_node->stop_work);
kfree(c_node->event_work);
kfree(c_node);
}
static bool ipp_check_mem_list(struct drm_exynos_ipp_cmd_node *c_node)
{
switch (c_node->property.cmd) {
case IPP_CMD_WB:
return !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_DST]);
case IPP_CMD_OUTPUT:
return !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_SRC]);
case IPP_CMD_M2M:
default:
return !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_SRC]) &&
!list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_DST]);
}
}
static struct drm_exynos_ipp_mem_node
*ipp_find_mem_node(struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_queue_buf *qbuf)
{
struct drm_exynos_ipp_mem_node *m_node;
struct list_head *head;
int count = 0;
DRM_DEBUG_KMS("buf_id[%d]\n", qbuf->buf_id);
/* source/destination memory list */
head = &c_node->mem_list[qbuf->ops_id];
/* find memory node from memory list */
list_for_each_entry(m_node, head, list) {
DRM_DEBUG_KMS("count[%d]m_node[0x%x]\n", count++, (int)m_node);
/* compare buffer id */
if (m_node->buf_id == qbuf->buf_id)
return m_node;
}
return NULL;
}
static int ipp_set_mem_node(struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_mem_node *m_node)
{
struct exynos_drm_ipp_ops *ops = NULL;
int ret = 0;
DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
if (!m_node) {
DRM_ERROR("invalid queue node.\n");
return -EFAULT;
}
DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
/* get operations callback */
ops = ippdrv->ops[m_node->ops_id];
if (!ops) {
DRM_ERROR("not support ops.\n");
return -EFAULT;
}
/* set address and enable irq */
if (ops->set_addr) {
ret = ops->set_addr(ippdrv->dev, &m_node->buf_info,
m_node->buf_id, IPP_BUF_ENQUEUE);
if (ret) {
DRM_ERROR("failed to set addr.\n");
return ret;
}
}
return ret;
}
static void ipp_handle_cmd_work(struct device *dev,
struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_cmd_work *cmd_work,
struct drm_exynos_ipp_cmd_node *c_node)
{
struct ipp_context *ctx = get_ipp_context(dev);
cmd_work->ippdrv = ippdrv;
cmd_work->c_node = c_node;
queue_work(ctx->cmd_workq, &cmd_work->work);
}
static int ipp_queue_buf_with_run(struct device *dev,
struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_mem_node *m_node,
struct drm_exynos_ipp_queue_buf *qbuf)
{
struct exynos_drm_ippdrv *ippdrv;
struct drm_exynos_ipp_property *property;
struct exynos_drm_ipp_ops *ops;
int ret;
ippdrv = ipp_find_drv_by_handle(qbuf->prop_id);
if (IS_ERR(ippdrv)) {
DRM_ERROR("failed to get ipp driver.\n");
return -EFAULT;
}
ops = ippdrv->ops[qbuf->ops_id];
if (!ops) {
DRM_ERROR("failed to get ops.\n");
return -EFAULT;
}
property = &c_node->property;
if (c_node->state != IPP_STATE_START) {
DRM_DEBUG_KMS("bypass for invalid state.\n");
return 0;
}
mutex_lock(&c_node->mem_lock);
if (!ipp_check_mem_list(c_node)) {
mutex_unlock(&c_node->mem_lock);
DRM_DEBUG_KMS("empty memory.\n");
return 0;
}
/*
* If set destination buffer and enabled clock,
* then m2m operations need start operations at queue_buf
*/
if (ipp_is_m2m_cmd(property->cmd)) {
struct drm_exynos_ipp_cmd_work *cmd_work = c_node->start_work;
cmd_work->ctrl = IPP_CTRL_PLAY;
ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
} else {
ret = ipp_set_mem_node(ippdrv, c_node, m_node);
if (ret) {
mutex_unlock(&c_node->mem_lock);
DRM_ERROR("failed to set m node.\n");
return ret;
}
}
mutex_unlock(&c_node->mem_lock);
return 0;
}
static void ipp_clean_queue_buf(struct drm_device *drm_dev,
struct drm_exynos_ipp_cmd_node *c_node,
struct drm_exynos_ipp_queue_buf *qbuf)
{
struct drm_exynos_ipp_mem_node *m_node, *tm_node;
/* delete list */
mutex_lock(&c_node->mem_lock);
list_for_each_entry_safe(m_node, tm_node,
&c_node->mem_list[qbuf->ops_id], list) {
if (m_node->buf_id == qbuf->buf_id &&
m_node->ops_id == qbuf->ops_id)
ipp_put_mem_node(drm_dev, c_node, m_node);
}
mutex_unlock(&c_node->mem_lock);
}
int exynos_drm_ipp_queue_buf(struct drm_device *drm_dev, void *data,
struct drm_file *file)
{
struct drm_exynos_file_private *file_priv = file->driver_priv;
struct device *dev = file_priv->ipp_dev;
struct ipp_context *ctx = get_ipp_context(dev);
struct drm_exynos_ipp_queue_buf *qbuf = data;
struct drm_exynos_ipp_cmd_node *c_node;
struct drm_exynos_ipp_mem_node *m_node;
int ret;
if (!qbuf) {
DRM_ERROR("invalid buf parameter.\n");
return -EINVAL;
}
if (qbuf->ops_id >= EXYNOS_DRM_OPS_MAX) {
DRM_ERROR("invalid ops parameter.\n");
return -EINVAL;
}
DRM_DEBUG_KMS("prop_id[%d]ops_id[%s]buf_id[%d]buf_type[%d]\n",
qbuf->prop_id, qbuf->ops_id ? "dst" : "src",
qbuf->buf_id, qbuf->buf_type);
/* find command node */
c_node = ipp_find_obj(&ctx->prop_idr, &ctx->prop_lock,
qbuf->prop_id);
if (!c_node || c_node->filp != file) {
DRM_ERROR("failed to get command node.\n");
return -ENODEV;
}
/* buffer control */
switch (qbuf->buf_type) {
case IPP_BUF_ENQUEUE:
/* get memory node */
m_node = ipp_get_mem_node(drm_dev, c_node, qbuf);
if (IS_ERR(m_node)) {
DRM_ERROR("failed to get m_node.\n");
return PTR_ERR(m_node);
}
/*
* first step get event for destination buffer.
* and second step when M2M case run with destination buffer
* if needed.
*/
if (qbuf->ops_id == EXYNOS_DRM_OPS_DST) {
/* get event for destination buffer */
ret = ipp_get_event(drm_dev, c_node, qbuf);
if (ret) {
DRM_ERROR("failed to get event.\n");
goto err_clean_node;
}
/*
* M2M case run play control for streaming feature.
* other case set address and waiting.
*/
ret = ipp_queue_buf_with_run(dev, c_node, m_node, qbuf);
if (ret) {
DRM_ERROR("failed to run command.\n");
goto err_clean_node;
}
}
break;
case IPP_BUF_DEQUEUE:
mutex_lock(&c_node->lock);
/* put event for destination buffer */
if (qbuf->ops_id == EXYNOS_DRM_OPS_DST)
ipp_put_event(c_node, qbuf);
ipp_clean_queue_buf(drm_dev, c_node, qbuf);
mutex_unlock(&c_node->lock);
break;
default:
DRM_ERROR("invalid buffer control.\n");
return -EINVAL;
}
return 0;
err_clean_node:
DRM_ERROR("clean memory nodes.\n");
ipp_clean_queue_buf(drm_dev, c_node, qbuf);
return ret;
}
static bool exynos_drm_ipp_check_valid(struct device *dev,
enum drm_exynos_ipp_ctrl ctrl, enum drm_exynos_ipp_state state)
{
if (ctrl != IPP_CTRL_PLAY) {
if (pm_runtime_suspended(dev)) {
DRM_ERROR("pm:runtime_suspended.\n");
goto err_status;
}
}
switch (ctrl) {
case IPP_CTRL_PLAY:
if (state != IPP_STATE_IDLE)
goto err_status;
break;
case IPP_CTRL_STOP:
if (state == IPP_STATE_STOP)
goto err_status;
break;
case IPP_CTRL_PAUSE:
if (state != IPP_STATE_START)
goto err_status;
break;
case IPP_CTRL_RESUME:
if (state != IPP_STATE_STOP)
goto err_status;
break;
default:
DRM_ERROR("invalid state.\n");
goto err_status;
}
return true;
err_status:
DRM_ERROR("invalid status:ctrl[%d]state[%d]\n", ctrl, state);
return false;
}
int exynos_drm_ipp_cmd_ctrl(struct drm_device *drm_dev, void *data,
struct drm_file *file)
{
struct drm_exynos_file_private *file_priv = file->driver_priv;
struct exynos_drm_ippdrv *ippdrv = NULL;
struct device *dev = file_priv->ipp_dev;
struct ipp_context *ctx = get_ipp_context(dev);
struct drm_exynos_ipp_cmd_ctrl *cmd_ctrl = data;
struct drm_exynos_ipp_cmd_work *cmd_work;
struct drm_exynos_ipp_cmd_node *c_node;
if (!ctx) {
DRM_ERROR("invalid context.\n");
return -EINVAL;
}
if (!cmd_ctrl) {
DRM_ERROR("invalid control parameter.\n");
return -EINVAL;
}
DRM_DEBUG_KMS("ctrl[%d]prop_id[%d]\n",
cmd_ctrl->ctrl, cmd_ctrl->prop_id);
ippdrv = ipp_find_drv_by_handle(cmd_ctrl->prop_id);
if (IS_ERR(ippdrv)) {
DRM_ERROR("failed to get ipp driver.\n");
return PTR_ERR(ippdrv);
}
c_node = ipp_find_obj(&ctx->prop_idr, &ctx->prop_lock,
cmd_ctrl->prop_id);
if (!c_node || c_node->filp != file) {
DRM_ERROR("invalid command node list.\n");
return -ENODEV;
}
if (!exynos_drm_ipp_check_valid(ippdrv->dev, cmd_ctrl->ctrl,
c_node->state)) {
DRM_ERROR("invalid state.\n");
return -EINVAL;
}
switch (cmd_ctrl->ctrl) {
case IPP_CTRL_PLAY:
if (pm_runtime_suspended(ippdrv->dev))
pm_runtime_get_sync(ippdrv->dev);
c_node->state = IPP_STATE_START;
cmd_work = c_node->start_work;
cmd_work->ctrl = cmd_ctrl->ctrl;
ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
break;
case IPP_CTRL_STOP:
cmd_work = c_node->stop_work;
cmd_work->ctrl = cmd_ctrl->ctrl;
ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
if (!wait_for_completion_timeout(&c_node->stop_complete,
msecs_to_jiffies(300))) {
DRM_ERROR("timeout stop:prop_id[%d]\n",
c_node->property.prop_id);
}
c_node->state = IPP_STATE_STOP;
ippdrv->dedicated = false;
mutex_lock(&ippdrv->cmd_lock);
ipp_clean_cmd_node(ctx, c_node);
if (list_empty(&ippdrv->cmd_list))
pm_runtime_put_sync(ippdrv->dev);
mutex_unlock(&ippdrv->cmd_lock);
break;
case IPP_CTRL_PAUSE:
cmd_work = c_node->stop_work;
cmd_work->ctrl = cmd_ctrl->ctrl;
ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
if (!wait_for_completion_timeout(&c_node->stop_complete,
msecs_to_jiffies(200))) {
DRM_ERROR("timeout stop:prop_id[%d]\n",
c_node->property.prop_id);
}
c_node->state = IPP_STATE_STOP;
break;
case IPP_CTRL_RESUME:
c_node->state = IPP_STATE_START;
cmd_work = c_node->start_work;
cmd_work->ctrl = cmd_ctrl->ctrl;
ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
break;
default:
DRM_ERROR("could not support this state currently.\n");
return -EINVAL;
}
DRM_DEBUG_KMS("done ctrl[%d]prop_id[%d]\n",
cmd_ctrl->ctrl, cmd_ctrl->prop_id);
return 0;
}
int exynos_drm_ippnb_register(struct notifier_block *nb)
{
return blocking_notifier_chain_register(
&exynos_drm_ippnb_list, nb);
}
int exynos_drm_ippnb_unregister(struct notifier_block *nb)
{
return blocking_notifier_chain_unregister(
&exynos_drm_ippnb_list, nb);
}
int exynos_drm_ippnb_send_event(unsigned long val, void *v)
{
return blocking_notifier_call_chain(
&exynos_drm_ippnb_list, val, v);
}
static int ipp_set_property(struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_property *property)
{
struct exynos_drm_ipp_ops *ops = NULL;
bool swap = false;
int ret, i;
if (!property) {
DRM_ERROR("invalid property parameter.\n");
return -EINVAL;
}
DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
/* reset h/w block */
if (ippdrv->reset &&
ippdrv->reset(ippdrv->dev)) {
return -EINVAL;
}
/* set source,destination operations */
for_each_ipp_ops(i) {
struct drm_exynos_ipp_config *config =
&property->config[i];
ops = ippdrv->ops[i];
if (!ops || !config) {
DRM_ERROR("not support ops and config.\n");
return -EINVAL;
}
/* set format */
if (ops->set_fmt) {
ret = ops->set_fmt(ippdrv->dev, config->fmt);
if (ret)
return ret;
}
/* set transform for rotation, flip */
if (ops->set_transf) {
ret = ops->set_transf(ippdrv->dev, config->degree,
config->flip, &swap);
if (ret)
return ret;
}
/* set size */
if (ops->set_size) {
ret = ops->set_size(ippdrv->dev, swap, &config->pos,
&config->sz);
if (ret)
return ret;
}
}
return 0;
}
static int ipp_start_property(struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_cmd_node *c_node)
{
struct drm_exynos_ipp_mem_node *m_node;
struct drm_exynos_ipp_property *property = &c_node->property;
struct list_head *head;
int ret, i;
DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
/* store command info in ippdrv */
ippdrv->c_node = c_node;
mutex_lock(&c_node->mem_lock);
if (!ipp_check_mem_list(c_node)) {
DRM_DEBUG_KMS("empty memory.\n");
ret = -ENOMEM;
goto err_unlock;
}
/* set current property in ippdrv */
ret = ipp_set_property(ippdrv, property);
if (ret) {
DRM_ERROR("failed to set property.\n");
ippdrv->c_node = NULL;
goto err_unlock;
}
/* check command */
switch (property->cmd) {
case IPP_CMD_M2M:
for_each_ipp_ops(i) {
/* source/destination memory list */
head = &c_node->mem_list[i];
m_node = list_first_entry(head,
struct drm_exynos_ipp_mem_node, list);
DRM_DEBUG_KMS("m_node[0x%x]\n", (int)m_node);
ret = ipp_set_mem_node(ippdrv, c_node, m_node);
if (ret) {
DRM_ERROR("failed to set m node.\n");
goto err_unlock;
}
}
break;
case IPP_CMD_WB:
/* destination memory list */
head = &c_node->mem_list[EXYNOS_DRM_OPS_DST];
list_for_each_entry(m_node, head, list) {
ret = ipp_set_mem_node(ippdrv, c_node, m_node);
if (ret) {
DRM_ERROR("failed to set m node.\n");
goto err_unlock;
}
}
break;
case IPP_CMD_OUTPUT:
/* source memory list */
head = &c_node->mem_list[EXYNOS_DRM_OPS_SRC];
list_for_each_entry(m_node, head, list) {
ret = ipp_set_mem_node(ippdrv, c_node, m_node);
if (ret) {
DRM_ERROR("failed to set m node.\n");
goto err_unlock;
}
}
break;
default:
DRM_ERROR("invalid operations.\n");
ret = -EINVAL;
goto err_unlock;
}
mutex_unlock(&c_node->mem_lock);
DRM_DEBUG_KMS("cmd[%d]\n", property->cmd);
/* start operations */
if (ippdrv->start) {
ret = ippdrv->start(ippdrv->dev, property->cmd);
if (ret) {
DRM_ERROR("failed to start ops.\n");
ippdrv->c_node = NULL;
return ret;
}
}
return 0;
err_unlock:
mutex_unlock(&c_node->mem_lock);
ippdrv->c_node = NULL;
return ret;
}
static int ipp_stop_property(struct drm_device *drm_dev,
struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_cmd_node *c_node)
{
struct drm_exynos_ipp_property *property = &c_node->property;
int i;
DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
/* stop operations */
if (ippdrv->stop)
ippdrv->stop(ippdrv->dev, property->cmd);
/* check command */
switch (property->cmd) {
case IPP_CMD_M2M:
for_each_ipp_ops(i)
ipp_clean_mem_nodes(drm_dev, c_node, i);
break;
case IPP_CMD_WB:
ipp_clean_mem_nodes(drm_dev, c_node, EXYNOS_DRM_OPS_DST);
break;
case IPP_CMD_OUTPUT:
ipp_clean_mem_nodes(drm_dev, c_node, EXYNOS_DRM_OPS_SRC);
break;
default:
DRM_ERROR("invalid operations.\n");
return -EINVAL;
}
return 0;
}
void ipp_sched_cmd(struct work_struct *work)
{
struct drm_exynos_ipp_cmd_work *cmd_work =
container_of(work, struct drm_exynos_ipp_cmd_work, work);
struct exynos_drm_ippdrv *ippdrv;
struct drm_exynos_ipp_cmd_node *c_node;
struct drm_exynos_ipp_property *property;
int ret;
ippdrv = cmd_work->ippdrv;
if (!ippdrv) {
DRM_ERROR("invalid ippdrv list.\n");
return;
}
c_node = cmd_work->c_node;
if (!c_node) {
DRM_ERROR("invalid command node list.\n");
return;
}
mutex_lock(&c_node->lock);
property = &c_node->property;
switch (cmd_work->ctrl) {
case IPP_CTRL_PLAY:
case IPP_CTRL_RESUME:
ret = ipp_start_property(ippdrv, c_node);
if (ret) {
DRM_ERROR("failed to start property:prop_id[%d]\n",
c_node->property.prop_id);
goto err_unlock;
}
/*
* M2M case supports wait_completion of transfer.
* because M2M case supports single unit operation
* with multiple queue.
* M2M need to wait completion of data transfer.
*/
if (ipp_is_m2m_cmd(property->cmd)) {
if (!wait_for_completion_timeout
(&c_node->start_complete, msecs_to_jiffies(200))) {
DRM_ERROR("timeout event:prop_id[%d]\n",
c_node->property.prop_id);
goto err_unlock;
}
}
break;
case IPP_CTRL_STOP:
case IPP_CTRL_PAUSE:
ret = ipp_stop_property(ippdrv->drm_dev, ippdrv,
c_node);
if (ret) {
DRM_ERROR("failed to stop property.\n");
goto err_unlock;
}
complete(&c_node->stop_complete);
break;
default:
DRM_ERROR("unknown control type\n");
break;
}
DRM_DEBUG_KMS("ctrl[%d] done.\n", cmd_work->ctrl);
err_unlock:
mutex_unlock(&c_node->lock);
}
static int ipp_send_event(struct exynos_drm_ippdrv *ippdrv,
struct drm_exynos_ipp_cmd_node *c_node, int *buf_id)
{
struct drm_device *drm_dev = ippdrv->drm_dev;
struct drm_exynos_ipp_property *property = &c_node->property;
struct drm_exynos_ipp_mem_node *m_node;
struct drm_exynos_ipp_queue_buf qbuf;
struct drm_exynos_ipp_send_event *e;
struct list_head *head;
struct timeval now;
unsigned long flags;
u32 tbuf_id[EXYNOS_DRM_OPS_MAX] = {0, };
int ret, i;
for_each_ipp_ops(i)
DRM_DEBUG_KMS("%s buf_id[%d]\n", i ? "dst" : "src", buf_id[i]);
if (!drm_dev) {
DRM_ERROR("failed to get drm_dev.\n");
return -EINVAL;
}
if (!property) {
DRM_ERROR("failed to get property.\n");
return -EINVAL;
}
mutex_lock(&c_node->event_lock);
if (list_empty(&c_node->event_list)) {
DRM_DEBUG_KMS("event list is empty.\n");
ret = 0;
goto err_event_unlock;
}
mutex_lock(&c_node->mem_lock);
if (!ipp_check_mem_list(c_node)) {
DRM_DEBUG_KMS("empty memory.\n");
ret = 0;
goto err_mem_unlock;
}
/* check command */
switch (property->cmd) {
case IPP_CMD_M2M:
for_each_ipp_ops(i) {
/* source/destination memory list */
head = &c_node->mem_list[i];
m_node = list_first_entry(head,
struct drm_exynos_ipp_mem_node, list);
tbuf_id[i] = m_node->buf_id;
DRM_DEBUG_KMS("%s buf_id[%d]\n",
i ? "dst" : "src", tbuf_id[i]);
ret = ipp_put_mem_node(drm_dev, c_node, m_node);
if (ret)
DRM_ERROR("failed to put m_node.\n");
}
break;
case IPP_CMD_WB:
/* clear buf for finding */
memset(&qbuf, 0x0, sizeof(qbuf));
qbuf.ops_id = EXYNOS_DRM_OPS_DST;
qbuf.buf_id = buf_id[EXYNOS_DRM_OPS_DST];
/* get memory node entry */
m_node = ipp_find_mem_node(c_node, &qbuf);
if (!m_node) {
DRM_ERROR("empty memory node.\n");
ret = -ENOMEM;
goto err_mem_unlock;
}
tbuf_id[EXYNOS_DRM_OPS_DST] = m_node->buf_id;
ret = ipp_put_mem_node(drm_dev, c_node, m_node);
if (ret)
DRM_ERROR("failed to put m_node.\n");
break;
case IPP_CMD_OUTPUT:
/* source memory list */
head = &c_node->mem_list[EXYNOS_DRM_OPS_SRC];
m_node = list_first_entry(head,
struct drm_exynos_ipp_mem_node, list);
tbuf_id[EXYNOS_DRM_OPS_SRC] = m_node->buf_id;
ret = ipp_put_mem_node(drm_dev, c_node, m_node);
if (ret)
DRM_ERROR("failed to put m_node.\n");
break;
default:
DRM_ERROR("invalid operations.\n");
ret = -EINVAL;
goto err_mem_unlock;
}
mutex_unlock(&c_node->mem_lock);
if (tbuf_id[EXYNOS_DRM_OPS_DST] != buf_id[EXYNOS_DRM_OPS_DST])
DRM_ERROR("failed to match buf_id[%d %d]prop_id[%d]\n",
tbuf_id[1], buf_id[1], property->prop_id);
/*
* command node have event list of destination buffer
* If destination buffer enqueue to mem list,
* then we make event and link to event list tail.
* so, we get first event for first enqueued buffer.
*/
e = list_first_entry(&c_node->event_list,
struct drm_exynos_ipp_send_event, base.link);
do_gettimeofday(&now);
DRM_DEBUG_KMS("tv_sec[%ld]tv_usec[%ld]\n", now.tv_sec, now.tv_usec);
e->event.tv_sec = now.tv_sec;
e->event.tv_usec = now.tv_usec;
e->event.prop_id = property->prop_id;
/* set buffer id about source destination */
for_each_ipp_ops(i)
e->event.buf_id[i] = tbuf_id[i];
spin_lock_irqsave(&drm_dev->event_lock, flags);
list_move_tail(&e->base.link, &e->base.file_priv->event_list);
wake_up_interruptible(&e->base.file_priv->event_wait);
spin_unlock_irqrestore(&drm_dev->event_lock, flags);
mutex_unlock(&c_node->event_lock);
DRM_DEBUG_KMS("done cmd[%d]prop_id[%d]buf_id[%d]\n",
property->cmd, property->prop_id, tbuf_id[EXYNOS_DRM_OPS_DST]);
return 0;
err_mem_unlock:
mutex_unlock(&c_node->mem_lock);
err_event_unlock:
mutex_unlock(&c_node->event_lock);
return ret;
}
void ipp_sched_event(struct work_struct *work)
{
struct drm_exynos_ipp_event_work *event_work =
container_of(work, struct drm_exynos_ipp_event_work, work);
struct exynos_drm_ippdrv *ippdrv;
struct drm_exynos_ipp_cmd_node *c_node;
int ret;
if (!event_work) {
DRM_ERROR("failed to get event_work.\n");
return;
}
DRM_DEBUG_KMS("buf_id[%d]\n", event_work->buf_id[EXYNOS_DRM_OPS_DST]);
ippdrv = event_work->ippdrv;
if (!ippdrv) {
DRM_ERROR("failed to get ipp driver.\n");
return;
}
c_node = ippdrv->c_node;
if (!c_node) {
DRM_ERROR("failed to get command node.\n");
return;
}
/*
* IPP supports command thread, event thread synchronization.
* If IPP close immediately from user land, then IPP make
* synchronization with command thread, so make complete event.
* or going out operations.
*/
if (c_node->state != IPP_STATE_START) {
DRM_DEBUG_KMS("bypass state[%d]prop_id[%d]\n",
c_node->state, c_node->property.prop_id);
goto err_completion;
}
ret = ipp_send_event(ippdrv, c_node, event_work->buf_id);
if (ret) {
DRM_ERROR("failed to send event.\n");
goto err_completion;
}
err_completion:
if (ipp_is_m2m_cmd(c_node->property.cmd))
complete(&c_node->start_complete);
}
static int ipp_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
{
struct ipp_context *ctx = get_ipp_context(dev);
struct exynos_drm_ippdrv *ippdrv;
int ret, count = 0;
/* get ipp driver entry */
list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
ippdrv->drm_dev = drm_dev;
ret = ipp_create_id(&ctx->ipp_idr, &ctx->ipp_lock, ippdrv);
if (ret < 0) {
DRM_ERROR("failed to create id.\n");
goto err;
}
ippdrv->prop_list.ipp_id = ret;
DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]ipp_id[%d]\n",
count++, (int)ippdrv, ret);
/* store parent device for node */
ippdrv->parent_dev = dev;
/* store event work queue and handler */
ippdrv->event_workq = ctx->event_workq;
ippdrv->sched_event = ipp_sched_event;
INIT_LIST_HEAD(&ippdrv->cmd_list);
mutex_init(&ippdrv->cmd_lock);
ret = drm_iommu_attach_device(drm_dev, ippdrv->dev);
if (ret) {
DRM_ERROR("failed to activate iommu\n");
goto err;
}
}
return 0;
err:
/* get ipp driver entry */
list_for_each_entry_continue_reverse(ippdrv, &exynos_drm_ippdrv_list,
drv_list) {
drm_iommu_detach_device(drm_dev, ippdrv->dev);
ipp_remove_id(&ctx->ipp_idr, &ctx->ipp_lock,
ippdrv->prop_list.ipp_id);
}
return ret;
}
static void ipp_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
{
struct exynos_drm_ippdrv *ippdrv, *t;
struct ipp_context *ctx = get_ipp_context(dev);
/* get ipp driver entry */
list_for_each_entry_safe(ippdrv, t, &exynos_drm_ippdrv_list, drv_list) {
drm_iommu_detach_device(drm_dev, ippdrv->dev);
ipp_remove_id(&ctx->ipp_idr, &ctx->ipp_lock,
ippdrv->prop_list.ipp_id);
ippdrv->drm_dev = NULL;
exynos_drm_ippdrv_unregister(ippdrv);
}
}
static int ipp_subdrv_open(struct drm_device *drm_dev, struct device *dev,
struct drm_file *file)
{
struct drm_exynos_file_private *file_priv = file->driver_priv;
file_priv->ipp_dev = dev;
DRM_DEBUG_KMS("done priv[0x%x]\n", (int)dev);
return 0;
}
static void ipp_subdrv_close(struct drm_device *drm_dev, struct device *dev,
struct drm_file *file)
{
struct exynos_drm_ippdrv *ippdrv = NULL;
struct ipp_context *ctx = get_ipp_context(dev);
struct drm_exynos_ipp_cmd_node *c_node, *tc_node;
int count = 0;
list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
mutex_lock(&ippdrv->cmd_lock);
list_for_each_entry_safe(c_node, tc_node,
&ippdrv->cmd_list, list) {
DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]\n",
count++, (int)ippdrv);
if (c_node->filp == file) {
/*
* userland goto unnormal state. process killed.
* and close the file.
* so, IPP didn't called stop cmd ctrl.
* so, we are make stop operation in this state.
*/
if (c_node->state == IPP_STATE_START) {
ipp_stop_property(drm_dev, ippdrv,
c_node);
c_node->state = IPP_STATE_STOP;
}
ippdrv->dedicated = false;
ipp_clean_cmd_node(ctx, c_node);
if (list_empty(&ippdrv->cmd_list))
pm_runtime_put_sync(ippdrv->dev);
}
}
mutex_unlock(&ippdrv->cmd_lock);
}
return;
}
static int ipp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ipp_context *ctx;
struct exynos_drm_subdrv *subdrv;
int ret;
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
mutex_init(&ctx->ipp_lock);
mutex_init(&ctx->prop_lock);
idr_init(&ctx->ipp_idr);
idr_init(&ctx->prop_idr);
/*
* create single thread for ipp event
* IPP supports event thread for IPP drivers.
* IPP driver send event_work to this thread.
* and IPP event thread send event to user process.
*/
ctx->event_workq = create_singlethread_workqueue("ipp_event");
if (!ctx->event_workq) {
dev_err(dev, "failed to create event workqueue\n");
return -EINVAL;
}
/*
* create single thread for ipp command
* IPP supports command thread for user process.
* user process make command node using set property ioctl.
* and make start_work and send this work to command thread.
* and then this command thread start property.
*/
ctx->cmd_workq = create_singlethread_workqueue("ipp_cmd");
if (!ctx->cmd_workq) {
dev_err(dev, "failed to create cmd workqueue\n");
ret = -EINVAL;
goto err_event_workq;
}
/* set sub driver informations */
subdrv = &ctx->subdrv;
subdrv->dev = dev;
subdrv->probe = ipp_subdrv_probe;
subdrv->remove = ipp_subdrv_remove;
subdrv->open = ipp_subdrv_open;
subdrv->close = ipp_subdrv_close;
platform_set_drvdata(pdev, ctx);
ret = exynos_drm_subdrv_register(subdrv);
if (ret < 0) {
DRM_ERROR("failed to register drm ipp device.\n");
goto err_cmd_workq;
}
dev_info(dev, "drm ipp registered successfully.\n");
return 0;
err_cmd_workq:
destroy_workqueue(ctx->cmd_workq);
err_event_workq:
destroy_workqueue(ctx->event_workq);
return ret;
}
static int ipp_remove(struct platform_device *pdev)
{
struct ipp_context *ctx = platform_get_drvdata(pdev);
/* unregister sub driver */
exynos_drm_subdrv_unregister(&ctx->subdrv);
/* remove,destroy ipp idr */
idr_destroy(&ctx->ipp_idr);
idr_destroy(&ctx->prop_idr);
mutex_destroy(&ctx->ipp_lock);
mutex_destroy(&ctx->prop_lock);
/* destroy command, event work queue */
destroy_workqueue(ctx->cmd_workq);
destroy_workqueue(ctx->event_workq);
return 0;
}
struct platform_driver ipp_driver = {
.probe = ipp_probe,
.remove = ipp_remove,
.driver = {
.name = "exynos-drm-ipp",
.owner = THIS_MODULE,
},
};