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7c7e33b799
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2020-2021 NXP
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*/
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#include <linux/init.h>
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#include <linux/interconnect.h>
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#include <linux/ioctl.h>
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#include <linux/list.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include "vpu.h"
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#include "vpu_mbox.h"
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#include "vpu_msgs.h"
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static void vpu_mbox_rx_callback(struct mbox_client *cl, void *msg)
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{
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struct vpu_mbox *rx = container_of(cl, struct vpu_mbox, cl);
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struct vpu_core *core = container_of(rx, struct vpu_core, rx);
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vpu_isr(core, *(u32 *)msg);
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}
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static int vpu_mbox_request_channel(struct device *dev, struct vpu_mbox *mbox)
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{
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struct mbox_chan *ch;
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struct mbox_client *cl;
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if (!dev || !mbox)
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return -EINVAL;
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if (mbox->ch)
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return 0;
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cl = &mbox->cl;
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cl->dev = dev;
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if (mbox->block) {
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cl->tx_block = true;
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cl->tx_tout = 1000;
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} else {
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cl->tx_block = false;
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}
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cl->knows_txdone = false;
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cl->rx_callback = vpu_mbox_rx_callback;
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ch = mbox_request_channel_byname(cl, mbox->name);
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if (IS_ERR(ch))
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return dev_err_probe(dev, PTR_ERR(ch),
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"Failed to request mbox chan %s\n",
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mbox->name);
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mbox->ch = ch;
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return 0;
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}
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int vpu_mbox_init(struct vpu_core *core)
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{
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scnprintf(core->tx_type.name, sizeof(core->tx_type.name) - 1, "tx0");
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core->tx_type.block = true;
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scnprintf(core->tx_data.name, sizeof(core->tx_data.name) - 1, "tx1");
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core->tx_data.block = false;
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scnprintf(core->rx.name, sizeof(core->rx.name) - 1, "rx");
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core->rx.block = true;
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return 0;
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}
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int vpu_mbox_request(struct vpu_core *core)
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{
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int ret;
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ret = vpu_mbox_request_channel(core->dev, &core->tx_type);
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if (ret)
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goto error;
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ret = vpu_mbox_request_channel(core->dev, &core->tx_data);
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if (ret)
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goto error;
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ret = vpu_mbox_request_channel(core->dev, &core->rx);
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if (ret)
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goto error;
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dev_dbg(core->dev, "%s request mbox\n", vpu_core_type_desc(core->type));
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return 0;
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error:
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vpu_mbox_free(core);
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return ret;
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}
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void vpu_mbox_free(struct vpu_core *core)
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{
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mbox_free_channel(core->tx_type.ch);
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mbox_free_channel(core->tx_data.ch);
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mbox_free_channel(core->rx.ch);
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core->tx_type.ch = NULL;
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core->tx_data.ch = NULL;
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core->rx.ch = NULL;
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dev_dbg(core->dev, "%s free mbox\n", vpu_core_type_desc(core->type));
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}
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void vpu_mbox_send_type(struct vpu_core *core, u32 type)
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{
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mbox_send_message(core->tx_type.ch, &type);
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}
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void vpu_mbox_send_msg(struct vpu_core *core, u32 type, u32 data)
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{
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mbox_send_message(core->tx_data.ch, &data);
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mbox_send_message(core->tx_type.ch, &type);
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}
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void vpu_mbox_enable_rx(struct vpu_dev *dev)
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{
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}
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