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/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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/kernel.h>
#include "cam_debug_util.h"
#include "cam_lrme_context.h"
static const char lrme_dev_name[] = "lrme";
static int __cam_lrme_ctx_acquire_dev_in_available(struct cam_context *ctx,
struct cam_acquire_dev_cmd *cmd)
{
int rc = 0;
uint64_t ctxt_to_hw_map = (uint64_t)ctx->ctxt_to_hw_map;
struct cam_lrme_context *lrme_ctx = ctx->ctx_priv;
CAM_DBG(CAM_LRME, "Enter");
rc = cam_context_acquire_dev_to_hw(ctx, cmd);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to acquire");
return rc;
}
ctxt_to_hw_map |= (lrme_ctx->index << CAM_LRME_CTX_INDEX_SHIFT);
ctx->ctxt_to_hw_map = (void *)ctxt_to_hw_map;
ctx->state = CAM_CTX_ACQUIRED;
return rc;
}
static int __cam_lrme_ctx_release_dev_in_acquired(struct cam_context *ctx,
struct cam_release_dev_cmd *cmd)
{
int rc = 0;
CAM_DBG(CAM_LRME, "Enter");
rc = cam_context_release_dev_to_hw(ctx, cmd);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to release");
return rc;
}
ctx->state = CAM_CTX_AVAILABLE;
return rc;
}
static int __cam_lrme_ctx_start_dev_in_acquired(struct cam_context *ctx,
struct cam_start_stop_dev_cmd *cmd)
{
int rc = 0;
CAM_DBG(CAM_LRME, "Enter");
rc = cam_context_start_dev_to_hw(ctx, cmd);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to start");
return rc;
}
ctx->state = CAM_CTX_ACTIVATED;
return rc;
}
static int __cam_lrme_ctx_config_dev_in_activated(struct cam_context *ctx,
struct cam_config_dev_cmd *cmd)
{
int rc;
CAM_DBG(CAM_LRME, "Enter");
rc = cam_context_prepare_dev_to_hw(ctx, cmd);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to config");
return rc;
}
return rc;
}
static int __cam_lrme_ctx_flush_dev_in_activated(struct cam_context *ctx,
struct cam_flush_dev_cmd *cmd)
{
int rc;
rc = cam_context_flush_dev_to_hw(ctx, cmd);
if (rc)
CAM_ERR(CAM_LRME, "Failed to flush device");
return rc;
}
static int __cam_lrme_ctx_stop_dev_in_activated(struct cam_context *ctx,
struct cam_start_stop_dev_cmd *cmd)
{
int rc = 0;
CAM_DBG(CAM_LRME, "Enter");
rc = cam_context_stop_dev_to_hw(ctx);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to stop dev");
return rc;
}
ctx->state = CAM_CTX_ACQUIRED;
return rc;
}
static int __cam_lrme_ctx_release_dev_in_activated(struct cam_context *ctx,
struct cam_release_dev_cmd *cmd)
{
int rc = 0;
CAM_DBG(CAM_LRME, "Enter");
rc = __cam_lrme_ctx_stop_dev_in_activated(ctx, NULL);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to stop");
return rc;
}
rc = cam_context_release_dev_to_hw(ctx, cmd);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to release");
return rc;
}
ctx->state = CAM_CTX_AVAILABLE;
return rc;
}
static int __cam_lrme_ctx_handle_irq_in_activated(void *context,
uint32_t evt_id, void *evt_data)
{
int rc;
CAM_DBG(CAM_LRME, "Enter");
rc = cam_context_buf_done_from_hw(context, evt_data, evt_id);
if (rc) {
CAM_ERR(CAM_LRME, "Failed in buf done, rc=%d", rc);
return rc;
}
return rc;
}
/* top state machine */
static struct cam_ctx_ops
cam_lrme_ctx_state_machine[CAM_CTX_STATE_MAX] = {
/* Uninit */
{
.ioctl_ops = {},
.crm_ops = {},
.irq_ops = NULL,
},
/* Available */
{
.ioctl_ops = {
.acquire_dev = __cam_lrme_ctx_acquire_dev_in_available,
},
.crm_ops = {},
.irq_ops = NULL,
},
/* Acquired */
{
.ioctl_ops = {
.release_dev = __cam_lrme_ctx_release_dev_in_acquired,
.start_dev = __cam_lrme_ctx_start_dev_in_acquired,
},
.crm_ops = {},
.irq_ops = NULL,
},
/* Ready */
{
.ioctl_ops = {},
.crm_ops = {},
.irq_ops = NULL,
},
/* Activate */
{
.ioctl_ops = {
.config_dev = __cam_lrme_ctx_config_dev_in_activated,
.release_dev = __cam_lrme_ctx_release_dev_in_activated,
.stop_dev = __cam_lrme_ctx_stop_dev_in_activated,
.flush_dev = __cam_lrme_ctx_flush_dev_in_activated,
},
.crm_ops = {},
.irq_ops = __cam_lrme_ctx_handle_irq_in_activated,
},
};
int cam_lrme_context_init(struct cam_lrme_context *lrme_ctx,
struct cam_context *base_ctx,
struct cam_hw_mgr_intf *hw_intf,
uint32_t index)
{
int rc = 0;
CAM_DBG(CAM_LRME, "Enter");
if (!base_ctx || !lrme_ctx) {
CAM_ERR(CAM_LRME, "Invalid input");
return -EINVAL;
}
memset(lrme_ctx, 0, sizeof(*lrme_ctx));
rc = cam_context_init(base_ctx, lrme_dev_name, CAM_LRME, index,
NULL, hw_intf, lrme_ctx->req_base, CAM_CTX_REQ_MAX);
if (rc) {
CAM_ERR(CAM_LRME, "Failed to init context");
return rc;
}
lrme_ctx->base = base_ctx;
lrme_ctx->index = index;
base_ctx->ctx_priv = lrme_ctx;
base_ctx->state_machine = cam_lrme_ctx_state_machine;
return rc;
}
int cam_lrme_context_deinit(struct cam_lrme_context *lrme_ctx)
{
int rc = 0;
CAM_DBG(CAM_LRME, "Enter");
if (!lrme_ctx) {
CAM_ERR(CAM_LRME, "No ctx to deinit");
return -EINVAL;
}
rc = cam_context_deinit(lrme_ctx->base);
memset(lrme_ctx, 0, sizeof(*lrme_ctx));
return rc;
}
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