151 lines
3.4 KiB
C
151 lines
3.4 KiB
C
/*
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* drivers/video/tegra/host/isp/isp.c
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*
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* Tegra Graphics ISP
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*
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* Copyright (c) 2012-2013, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/export.h>
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#include <linux/resource.h>
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#include <linux/pm_runtime.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_platform.h>
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#include <linux/platform_data/tegra_pm_domains.h>
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#include "dev.h"
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#include "bus_client.h"
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#include "nvhost_acm.h"
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#include "t114/t114.h"
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#include "t124/t124.h"
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#include "isp.h"
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#define T12_ISP_CG_CTRL 0x1d
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#define T12_CG_2ND_LEVEL_EN 1
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#define T12_ISPB_DEV_ID 1
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static struct of_device_id tegra_isp_of_match[] = {
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#ifdef TEGRA_11X_OR_HIGHER_CONFIG
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{ .compatible = "nvidia,tegra114-isp",
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.data = (struct nvhost_device_data *)&t11_isp_info },
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#endif
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#ifdef TEGRA_12X_OR_HIGHER_CONFIG
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{ .compatible = "nvidia,tegra124-isp",
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.data = (struct nvhost_device_data *)&t124_isp_info },
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#endif
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{ },
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};
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int nvhost_isp_t124_finalize_poweron(struct platform_device *pdev)
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{
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nvhost_client_writel(pdev, T12_CG_2ND_LEVEL_EN, T12_ISP_CG_CTRL);
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return 0;
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}
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static int isp_probe(struct platform_device *dev)
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{
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int err = 0;
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#ifdef TEGRA_12X_OR_HIGHER_CONFIG
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int dev_id = 0;
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#endif
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struct nvhost_device_data *pdata = NULL;
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if (dev->dev.of_node) {
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const struct of_device_id *match;
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match = of_match_device(tegra_isp_of_match, &dev->dev);
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if (match)
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pdata = (struct nvhost_device_data *)match->data;
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#ifdef TEGRA_12X_OR_HIGHER_CONFIG
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if (sscanf(dev->name, "isp.%1d", &dev_id) != 1)
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return -EINVAL;
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if (dev_id == T12_ISPB_DEV_ID)
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pdata = &t124_ispb_info;
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#endif
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} else
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pdata = (struct nvhost_device_data *)dev->dev.platform_data;
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WARN_ON(!pdata);
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if (!pdata) {
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dev_info(&dev->dev, "no platform data\n");
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return -ENODATA;
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}
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pdata->pdev = dev;
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mutex_init(&pdata->lock);
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platform_set_drvdata(dev, pdata);
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err = nvhost_client_device_get_resources(dev);
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if (err)
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return err;
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nvhost_module_init(dev);
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#ifdef CONFIG_PM_GENERIC_DOMAINS
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pdata->pd.name = "ve";
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/* add module power domain and also add its domain
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* as sub-domain of MC domain */
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err = nvhost_module_add_domain(&pdata->pd, dev);
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#endif
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err = nvhost_client_device_init(dev);
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if (err)
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return err;
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return 0;
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}
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static int __exit isp_remove(struct platform_device *dev)
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{
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#ifdef CONFIG_PM_RUNTIME
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pm_runtime_put(&dev->dev);
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pm_runtime_disable(&dev->dev);
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#else
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nvhost_module_disable_clk(&dev->dev);
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#endif
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return 0;
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}
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static struct platform_driver isp_driver = {
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.probe = isp_probe,
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.remove = __exit_p(isp_remove),
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.driver = {
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.owner = THIS_MODULE,
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.name = "isp",
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#ifdef CONFIG_PM
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.pm = &nvhost_module_pm_ops,
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#endif
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#ifdef CONFIG_OF
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.of_match_table = tegra_isp_of_match,
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#endif
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}
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};
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static int __init isp_init(void)
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{
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return platform_driver_register(&isp_driver);
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}
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static void __exit isp_exit(void)
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{
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platform_driver_unregister(&isp_driver);
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}
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module_init(isp_init);
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module_exit(isp_exit);
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