*
* Tegra Graphics ISP
*
- * Copyright (c) 2012, NVIDIA Corporation.
+ * Copyright (c) 2012-2013, NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/resource.h>
+#include <linux/pm_runtime.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+
+#include <mach/pm_domains.h>
+
#include "dev.h"
#include "bus_client.h"
+#include "nvhost_acm.h"
+#include "t20/t20.h"
+#include "t30/t30.h"
+#include "t114/t114.h"
+#include "t148/t148.h"
+#include "t124/t124.h"
+
+static struct of_device_id tegra_isp_of_match[] = {
+#ifdef TEGRA_2X_OR_HIGHER_CONFIG
+ { .compatible = "nvidia,tegra20-isp",
+ .data = (struct nvhost_device_data *)&t20_isp_info },
+#endif
+#ifdef TEGRA_3X_OR_HIGHER_CONFIG
+ { .compatible = "nvidia,tegra30-isp",
+ .data = (struct nvhost_device_data *)&t30_isp_info },
+#endif
+#ifdef TEGRA_11X_OR_HIGHER_CONFIG
+ { .compatible = "nvidia,tegra114-isp",
+ .data = (struct nvhost_device_data *)&t11_isp_info },
+#endif
+#ifdef TEGRA_14X_OR_HIGHER_CONFIG
+ { .compatible = "nvidia,tegra148-isp",
+ .data = (struct nvhost_device_data *)&t14_isp_info },
+#endif
+#ifdef TEGRA_12X_OR_HIGHER_CONFIG
+ { .compatible = "nvidia,tegra124-isp",
+ .data = (struct nvhost_device_data *)&t124_isp_info },
+#endif
+ { },
+};
-static int isp_probe(struct nvhost_device *dev)
+#ifdef CONFIG_PM_GENERIC_DOMAINS
+static int isp_unpowergate(struct generic_pm_domain *domain)
{
- return nvhost_client_device_init(dev);
+ struct nvhost_device_data *pdata;
+
+ pdata = container_of(domain, struct nvhost_device_data, pd);
+ return nvhost_module_power_on(pdata->pdev);
}
-static int __exit isp_remove(struct nvhost_device *dev)
+static int isp_powergate(struct generic_pm_domain *domain)
{
- /* Add clean-up */
- return 0;
+ struct nvhost_device_data *pdata;
+
+ pdata = container_of(domain, struct nvhost_device_data, pd);
+ return nvhost_module_power_off(pdata->pdev);
}
+#endif
-static int isp_suspend(struct nvhost_device *dev, pm_message_t state)
+static int isp_probe(struct platform_device *dev)
{
- return nvhost_client_device_suspend(dev);
+ int err = 0;
+ struct nvhost_device_data *pdata = NULL;
+
+ if (dev->dev.of_node) {
+ const struct of_device_id *match;
+
+ match = of_match_device(tegra_isp_of_match, &dev->dev);
+ if (match)
+ pdata = (struct nvhost_device_data *)match->data;
+ } else
+ pdata = (struct nvhost_device_data *)dev->dev.platform_data;
+
+ WARN_ON(!pdata);
+ if (!pdata) {
+ dev_info(&dev->dev, "no platform data\n");
+ return -ENODATA;
+ }
+
+ pdata->pdev = dev;
+ mutex_init(&pdata->lock);
+ platform_set_drvdata(dev, pdata);
+ nvhost_module_init(dev);
+
+#ifdef CONFIG_PM_GENERIC_DOMAINS
+ pdata->pd.name = "ve";
+ pdata->pd.power_off = isp_powergate;
+ pdata->pd.power_on = isp_unpowergate;
+ pdata->pd.dev_ops.start = nvhost_module_enable_clk;
+ pdata->pd.dev_ops.stop = nvhost_module_disable_clk;
+
+ /* add module power domain and also add its domain
+ * as sub-domain of MC domain */
+ err = nvhost_module_add_domain(&pdata->pd, dev);
+
+ /* overwrite save/restore fptrs set by pm_genpd_init */
+ pdata->pd.domain.ops.suspend = nvhost_client_device_suspend;
+ pdata->pd.domain.ops.resume = nvhost_client_device_resume;
+#endif
+
+ err = nvhost_client_device_get_resources(dev);
+ if (err)
+ return err;
+
+ err = nvhost_client_device_init(dev);
+ if (err)
+ return err;
+
+#ifdef CONFIG_PM_RUNTIME
+ if (pdata->clockgate_delay) {
+ pm_runtime_set_autosuspend_delay(&dev->dev,
+ pdata->clockgate_delay);
+ pm_runtime_use_autosuspend(&dev->dev);
+ }
+ pm_runtime_enable(&dev->dev);
+#else
+ nvhost_module_enable_clk(&dev->dev);
+#endif
+
+ return 0;
}
-static int isp_resume(struct nvhost_device *dev)
+static int __exit isp_remove(struct platform_device *dev)
{
- dev_info(&dev->dev, "resuming\n");
+#ifdef CONFIG_PM_RUNTIME
+ pm_runtime_put(&dev->dev);
+ pm_runtime_disable(&dev->dev);
+#endif
return 0;
}
-struct nvhost_device *isp_device;
+#ifdef CONFIG_PM
+static const struct dev_pm_ops isp_pm_ops = {
+ .suspend = nvhost_client_device_suspend,
+ .resume = nvhost_client_device_resume,
+#ifdef CONFIG_PM_RUNTIME
+ .runtime_suspend = nvhost_module_disable_clk,
+ .runtime_resume = nvhost_module_enable_clk,
+#endif
+};
+#endif
-static struct nvhost_driver isp_driver = {
+static struct platform_driver isp_driver = {
.probe = isp_probe,
.remove = __exit_p(isp_remove),
-#ifdef CONFIG_PM
- .suspend = isp_suspend,
- .resume = isp_resume,
-#endif
.driver = {
.owner = THIS_MODULE,
.name = "isp",
+#ifdef CONFIG_PM
+ .pm = &isp_pm_ops,
+#endif
+#ifdef CONFIG_OF
+ .of_match_table = tegra_isp_of_match,
+#endif
}
};
static int __init isp_init(void)
{
- int err;
-
- isp_device = nvhost_get_device("isp");
- if (!isp_device)
- return -ENXIO;
-
- err = nvhost_device_register(isp_device);
- if (err)
- return err;
-
- return nvhost_driver_register(&isp_driver);
+ return platform_driver_register(&isp_driver);
}
static void __exit isp_exit(void)
{
- nvhost_driver_unregister(&isp_driver);
+ platform_driver_unregister(&isp_driver);
}
module_init(isp_init);
Code Review / linux-3.10.git / blobdiff