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git://nv-tegra.nvidia.com/linux-nv-oot.git
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dd109353df
This patch modifies rtcpu modules to use new ivc headers, resolves cyclic dependencies between the modules, reduces the amount of modules built by linking them together and fixes other minor issues encountered with K5.15 Change-Id: I9cf2672df08ffe6c4b8aea9ac21d6cc50a92bb4e Signed-off-by: Matti Ryttylainen <mryttylainen@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2787121 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Ankur Pawar <ankurp@nvidia.com> Reviewed-by: Semi Malinen <smalinen@nvidia.com> Reviewed-by: Pekka Pessi <ppessi@nvidia.com> Reviewed-by: Frank Chen <frankc@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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#include <linux/device.h>
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#include <linux/interrupt.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 <linux/slab.h>
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#include <linux/tegra-camera-rtcpu.h>
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#include <linux/tegra-rtcpu-monitor.h>
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struct tegra_camrtc_mon {
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struct device *rce_dev;
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int wdt_irq;
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struct work_struct wdt_work;
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};
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int tegra_camrtc_mon_restore_rtcpu(struct tegra_camrtc_mon *cam_rtcpu_mon)
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{
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/* (Re)boot the rtcpu */
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/* rtcpu-down and rtcpu-up events are broadcast to all ivc channels */
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return tegra_camrtc_reboot(cam_rtcpu_mon->rce_dev);
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}
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EXPORT_SYMBOL(tegra_camrtc_mon_restore_rtcpu);
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static void tegra_camrtc_mon_wdt_worker(struct work_struct *work)
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{
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struct tegra_camrtc_mon *cam_rtcpu_mon = container_of(work,
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struct tegra_camrtc_mon, wdt_work);
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dev_info(cam_rtcpu_mon->rce_dev,
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"Alert: Camera RTCPU gone bad! restoring it immediately!!\n");
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tegra_camrtc_mon_restore_rtcpu(cam_rtcpu_mon);
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/* Enable WDT IRQ */
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enable_irq(cam_rtcpu_mon->wdt_irq);
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}
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static irqreturn_t tegra_camrtc_mon_wdt_remote_isr(int irq, void *data)
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{
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struct tegra_camrtc_mon *cam_rtcpu_mon = data;
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disable_irq_nosync(irq);
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schedule_work(&cam_rtcpu_mon->wdt_work);
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return IRQ_HANDLED;
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}
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static int tegra_camrtc_mon_wdt_irq_setup(
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struct tegra_camrtc_mon *cam_rtcpu_mon)
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{
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struct platform_device *pdev =
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to_platform_device(cam_rtcpu_mon->rce_dev);
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int ret;
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cam_rtcpu_mon->wdt_irq = platform_get_irq_byname(pdev, "wdt-remote");
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if (cam_rtcpu_mon->wdt_irq < 0) {
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dev_warn(&pdev->dev, "missing irq wdt-remote\n");
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return -ENODEV;
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}
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ret = devm_request_threaded_irq(&pdev->dev, cam_rtcpu_mon->wdt_irq,
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NULL, tegra_camrtc_mon_wdt_remote_isr, IRQF_ONESHOT,
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dev_name(cam_rtcpu_mon->rce_dev), cam_rtcpu_mon);
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if (ret)
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return ret;
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dev_info(&pdev->dev, "using cam RTCPU IRQ (%d)\n",
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cam_rtcpu_mon->wdt_irq);
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return 0;
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}
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struct tegra_camrtc_mon *tegra_camrtc_mon_create(struct device *dev)
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{
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struct tegra_camrtc_mon *cam_rtcpu_mon;
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cam_rtcpu_mon = devm_kzalloc(dev, sizeof(*cam_rtcpu_mon), GFP_KERNEL);
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if (unlikely(cam_rtcpu_mon == NULL))
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return ERR_PTR(-ENOMEM);
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cam_rtcpu_mon->rce_dev = dev;
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/* Initialize wdt_work */
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INIT_WORK(&cam_rtcpu_mon->wdt_work, tegra_camrtc_mon_wdt_worker);
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tegra_camrtc_mon_wdt_irq_setup(cam_rtcpu_mon);
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dev_info(dev, "tegra_camrtc_mon_create is successful\n");
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return cam_rtcpu_mon;
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}
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EXPORT_SYMBOL(tegra_camrtc_mon_create);
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int tegra_cam_rtcpu_mon_destroy(struct tegra_camrtc_mon *cam_rtcpu_mon)
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{
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if (IS_ERR_OR_NULL(cam_rtcpu_mon))
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return -EINVAL;
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devm_kfree(cam_rtcpu_mon->rce_dev, cam_rtcpu_mon);
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return 0;
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}
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EXPORT_SYMBOL(tegra_cam_rtcpu_mon_destroy);
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MODULE_DESCRIPTION("CAMERA RTCPU monitor driver");
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MODULE_AUTHOR("Sudhir Vyas <svyas@nvidia.com>");
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MODULE_LICENSE("GPL v2");
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