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path: root/drivers/gpu/drm/tidss/tidss_drv.c
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Diffstat (limited to 'drivers/gpu/drm/tidss/tidss_drv.c')
-rw-r--r--drivers/gpu/drm/tidss/tidss_drv.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
new file mode 100644
index 000000000000..d95e4be2c7b9
--- /dev/null
+++ b/drivers/gpu/drm/tidss/tidss_drv.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
+ */
+
+#include <linux/console.h>
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_irq.h>
+#include <drm/drm_probe_helper.h>
+
+#include "tidss_dispc.h"
+#include "tidss_drv.h"
+#include "tidss_kms.h"
+#include "tidss_irq.h"
+
+/* Power management */
+
+int tidss_runtime_get(struct tidss_device *tidss)
+{
+ int r;
+
+ dev_dbg(tidss->dev, "%s\n", __func__);
+
+ r = pm_runtime_get_sync(tidss->dev);
+ WARN_ON(r < 0);
+ return r < 0 ? r : 0;
+}
+
+void tidss_runtime_put(struct tidss_device *tidss)
+{
+ int r;
+
+ dev_dbg(tidss->dev, "%s\n", __func__);
+
+ r = pm_runtime_put_sync(tidss->dev);
+ WARN_ON(r < 0);
+}
+
+static int __maybe_unused tidss_pm_runtime_suspend(struct device *dev)
+{
+ struct tidss_device *tidss = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ return dispc_runtime_suspend(tidss->dispc);
+}
+
+static int __maybe_unused tidss_pm_runtime_resume(struct device *dev)
+{
+ struct tidss_device *tidss = dev_get_drvdata(dev);
+ int r;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ r = dispc_runtime_resume(tidss->dispc);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static int __maybe_unused tidss_suspend(struct device *dev)
+{
+ struct tidss_device *tidss = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ return drm_mode_config_helper_suspend(&tidss->ddev);
+}
+
+static int __maybe_unused tidss_resume(struct device *dev)
+{
+ struct tidss_device *tidss = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ return drm_mode_config_helper_resume(&tidss->ddev);
+}
+
+#ifdef CONFIG_PM
+
+static const struct dev_pm_ops tidss_pm_ops = {
+ .runtime_suspend = tidss_pm_runtime_suspend,
+ .runtime_resume = tidss_pm_runtime_resume,
+ SET_SYSTEM_SLEEP_PM_OPS(tidss_suspend, tidss_resume)
+};
+
+#endif /* CONFIG_PM */
+
+/* DRM device Information */
+
+static void tidss_release(struct drm_device *ddev)
+{
+ struct tidss_device *tidss = ddev->dev_private;
+
+ drm_kms_helper_poll_fini(ddev);
+
+ tidss_modeset_cleanup(tidss);
+
+ drm_dev_fini(ddev);
+
+ kfree(tidss);
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(tidss_fops);
+
+static struct drm_driver tidss_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ .fops = &tidss_fops,
+ .release = tidss_release,
+ DRM_GEM_CMA_VMAP_DRIVER_OPS,
+ .name = "tidss",
+ .desc = "TI Keystone DSS",
+ .date = "20180215",
+ .major = 1,
+ .minor = 0,
+
+ .irq_preinstall = tidss_irq_preinstall,
+ .irq_postinstall = tidss_irq_postinstall,
+ .irq_handler = tidss_irq_handler,
+ .irq_uninstall = tidss_irq_uninstall,
+};
+
+static int tidss_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tidss_device *tidss;
+ struct drm_device *ddev;
+ int ret;
+ int irq;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ /* Can't use devm_* since drm_device's lifetime may exceed dev's */
+ tidss = kzalloc(sizeof(*tidss), GFP_KERNEL);
+ if (!tidss)
+ return -ENOMEM;
+
+ ddev = &tidss->ddev;
+
+ ret = devm_drm_dev_init(&pdev->dev, ddev, &tidss_driver);
+ if (ret) {
+ kfree(ddev);
+ return ret;
+ }
+
+ tidss->dev = dev;
+ tidss->feat = of_device_get_match_data(dev);
+
+ platform_set_drvdata(pdev, tidss);
+
+ ddev->dev_private = tidss;
+
+ ret = dispc_init(tidss);
+ if (ret) {
+ dev_err(dev, "failed to initialize dispc: %d\n", ret);
+ return ret;
+ }
+
+ pm_runtime_enable(dev);
+
+#ifndef CONFIG_PM
+ /* If we don't have PM, we need to call resume manually */
+ dispc_runtime_resume(tidss->dispc);
+#endif
+
+ ret = tidss_modeset_init(tidss);
+ if (ret < 0) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "failed to init DRM/KMS (%d)\n", ret);
+ goto err_runtime_suspend;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ ret = irq;
+ goto err_runtime_suspend;
+ }
+
+ ret = drm_irq_install(ddev, irq);
+ if (ret) {
+ dev_err(dev, "drm_irq_install failed: %d\n", ret);
+ goto err_runtime_suspend;
+ }
+
+ drm_kms_helper_poll_init(ddev);
+
+ drm_mode_config_reset(ddev);
+
+ ret = drm_dev_register(ddev, 0);
+ if (ret) {
+ dev_err(dev, "failed to register DRM device\n");
+ goto err_irq_uninstall;
+ }
+
+ drm_fbdev_generic_setup(ddev, 32);
+
+ dev_dbg(dev, "%s done\n", __func__);
+
+ return 0;
+
+err_irq_uninstall:
+ drm_irq_uninstall(ddev);
+
+err_runtime_suspend:
+#ifndef CONFIG_PM
+ dispc_runtime_suspend(tidss->dispc);
+#endif
+ pm_runtime_disable(dev);
+
+ return ret;
+}
+
+static int tidss_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tidss_device *tidss = platform_get_drvdata(pdev);
+ struct drm_device *ddev = &tidss->ddev;
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ drm_dev_unregister(ddev);
+
+ drm_atomic_helper_shutdown(ddev);
+
+ drm_irq_uninstall(ddev);
+
+#ifndef CONFIG_PM
+ /* If we don't have PM, we need to call suspend manually */
+ dispc_runtime_suspend(tidss->dispc);
+#endif
+ pm_runtime_disable(dev);
+
+ /* devm allocated dispc goes away with the dev so mark it NULL */
+ dispc_remove(tidss);
+
+ dev_dbg(dev, "%s done\n", __func__);
+
+ return 0;
+}
+
+static void tidss_shutdown(struct platform_device *pdev)
+{
+ drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
+}
+
+static const struct of_device_id tidss_of_table[] = {
+ { .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
+ { .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
+ { .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, tidss_of_table);
+
+static struct platform_driver tidss_platform_driver = {
+ .probe = tidss_probe,
+ .remove = tidss_remove,
+ .shutdown = tidss_shutdown,
+ .driver = {
+ .name = "tidss",
+#ifdef CONFIG_PM
+ .pm = &tidss_pm_ops,
+#endif
+ .of_match_table = tidss_of_table,
+ .suppress_bind_attrs = true,
+ },
+};
+
+module_platform_driver(tidss_platform_driver);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
+MODULE_DESCRIPTION("TI Keystone DSS Driver");
+MODULE_LICENSE("GPL v2");