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path: root/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_hdmi.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_hdmi.c439
1 files changed, 439 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_hdmi.c b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
new file mode 100644
index 00000000000..ed8a319ed84
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_hdmi.c
@@ -0,0 +1,439 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Authors:
+ * Inki Dae <inki.dae@samsung.com>
+ * Seung-Woo Kim <sw0312.kim@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include "drmP.h"
+
+#include <linux/kernel.h>
+#include <linux/wait.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/exynos_drm.h>
+
+#include "exynos_drm_drv.h"
+#include "exynos_drm_hdmi.h"
+
+#define to_context(dev) platform_get_drvdata(to_platform_device(dev))
+#define to_subdrv(dev) to_context(dev)
+#define get_ctx_from_subdrv(subdrv) container_of(subdrv,\
+ struct drm_hdmi_context, subdrv);
+
+/* these callback points shoud be set by specific drivers. */
+static struct exynos_hdmi_display_ops *hdmi_display_ops;
+static struct exynos_hdmi_manager_ops *hdmi_manager_ops;
+static struct exynos_hdmi_overlay_ops *hdmi_overlay_ops;
+
+struct drm_hdmi_context {
+ struct exynos_drm_subdrv subdrv;
+ struct exynos_drm_hdmi_context *hdmi_ctx;
+ struct exynos_drm_hdmi_context *mixer_ctx;
+ struct work_struct work;
+};
+
+void exynos_drm_display_ops_register(struct exynos_hdmi_display_ops
+ *display_ops)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (display_ops)
+ hdmi_display_ops = display_ops;
+}
+EXPORT_SYMBOL(exynos_drm_display_ops_register);
+
+void exynos_drm_manager_ops_register(struct exynos_hdmi_manager_ops
+ *manager_ops)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (manager_ops)
+ hdmi_manager_ops = manager_ops;
+}
+EXPORT_SYMBOL(exynos_drm_manager_ops_register);
+
+void exynos_drm_overlay_ops_register(struct exynos_hdmi_overlay_ops
+ *overlay_ops)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (overlay_ops)
+ hdmi_overlay_ops = overlay_ops;
+}
+EXPORT_SYMBOL(exynos_drm_overlay_ops_register);
+
+static bool drm_hdmi_is_connected(struct device *dev)
+{
+ struct drm_hdmi_context *ctx = to_context(dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_display_ops && hdmi_display_ops->is_connected)
+ return hdmi_display_ops->is_connected(ctx->hdmi_ctx->ctx);
+
+ return false;
+}
+
+static int drm_hdmi_get_edid(struct device *dev,
+ struct drm_connector *connector, u8 *edid, int len)
+{
+ struct drm_hdmi_context *ctx = to_context(dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_display_ops && hdmi_display_ops->get_edid)
+ return hdmi_display_ops->get_edid(ctx->hdmi_ctx->ctx,
+ connector, edid, len);
+
+ return 0;
+}
+
+static int drm_hdmi_check_timing(struct device *dev, void *timing)
+{
+ struct drm_hdmi_context *ctx = to_context(dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_display_ops && hdmi_display_ops->check_timing)
+ return hdmi_display_ops->check_timing(ctx->hdmi_ctx->ctx,
+ timing);
+
+ return 0;
+}
+
+static int drm_hdmi_power_on(struct device *dev, int mode)
+{
+ struct drm_hdmi_context *ctx = to_context(dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_display_ops && hdmi_display_ops->power_on)
+ return hdmi_display_ops->power_on(ctx->hdmi_ctx->ctx, mode);
+
+ return 0;
+}
+
+static struct exynos_drm_display_ops drm_hdmi_display_ops = {
+ .type = EXYNOS_DISPLAY_TYPE_HDMI,
+ .is_connected = drm_hdmi_is_connected,
+ .get_edid = drm_hdmi_get_edid,
+ .check_timing = drm_hdmi_check_timing,
+ .power_on = drm_hdmi_power_on,
+};
+
+static int drm_hdmi_enable_vblank(struct device *subdrv_dev)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+ struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
+ struct exynos_drm_manager *manager = &subdrv->manager;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_overlay_ops && hdmi_overlay_ops->enable_vblank)
+ return hdmi_overlay_ops->enable_vblank(ctx->mixer_ctx->ctx,
+ manager->pipe);
+
+ return 0;
+}
+
+static void drm_hdmi_disable_vblank(struct device *subdrv_dev)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_overlay_ops && hdmi_overlay_ops->disable_vblank)
+ return hdmi_overlay_ops->disable_vblank(ctx->mixer_ctx->ctx);
+}
+
+static void drm_hdmi_mode_set(struct device *subdrv_dev, void *mode)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_manager_ops && hdmi_manager_ops->mode_set)
+ hdmi_manager_ops->mode_set(ctx->hdmi_ctx->ctx, mode);
+}
+
+static void drm_hdmi_commit(struct device *subdrv_dev)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_manager_ops && hdmi_manager_ops->commit)
+ hdmi_manager_ops->commit(ctx->hdmi_ctx->ctx);
+}
+
+static void drm_hdmi_dpms(struct device *subdrv_dev, int mode)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ switch (mode) {
+ case DRM_MODE_DPMS_ON:
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+ case DRM_MODE_DPMS_SUSPEND:
+ case DRM_MODE_DPMS_OFF:
+ if (hdmi_manager_ops && hdmi_manager_ops->disable)
+ hdmi_manager_ops->disable(ctx->hdmi_ctx->ctx);
+ break;
+ default:
+ DRM_DEBUG_KMS("unkown dps mode: %d\n", mode);
+ break;
+ }
+}
+
+static struct exynos_drm_manager_ops drm_hdmi_manager_ops = {
+ .dpms = drm_hdmi_dpms,
+ .enable_vblank = drm_hdmi_enable_vblank,
+ .disable_vblank = drm_hdmi_disable_vblank,
+ .mode_set = drm_hdmi_mode_set,
+ .commit = drm_hdmi_commit,
+};
+
+static void drm_mixer_mode_set(struct device *subdrv_dev,
+ struct exynos_drm_overlay *overlay)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_overlay_ops && hdmi_overlay_ops->win_mode_set)
+ hdmi_overlay_ops->win_mode_set(ctx->mixer_ctx->ctx, overlay);
+}
+
+static void drm_mixer_commit(struct device *subdrv_dev, int zpos)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_overlay_ops && hdmi_overlay_ops->win_commit)
+ hdmi_overlay_ops->win_commit(ctx->mixer_ctx->ctx, zpos);
+}
+
+static void drm_mixer_disable(struct device *subdrv_dev, int zpos)
+{
+ struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ if (hdmi_overlay_ops && hdmi_overlay_ops->win_disable)
+ hdmi_overlay_ops->win_disable(ctx->mixer_ctx->ctx, zpos);
+}
+
+static struct exynos_drm_overlay_ops drm_hdmi_overlay_ops = {
+ .mode_set = drm_mixer_mode_set,
+ .commit = drm_mixer_commit,
+ .disable = drm_mixer_disable,
+};
+
+
+static int hdmi_subdrv_probe(struct drm_device *drm_dev,
+ struct device *dev)
+{
+ struct exynos_drm_subdrv *subdrv = to_subdrv(dev);
+ struct drm_hdmi_context *ctx;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos_drm_common_hdmi_pd *pd;
+ int ret;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ pd = pdev->dev.platform_data;
+
+ if (!pd) {
+ DRM_DEBUG_KMS("platform data is null.\n");
+ return -EFAULT;
+ }
+
+ if (!pd->hdmi_dev) {
+ DRM_DEBUG_KMS("hdmi device is null.\n");
+ return -EFAULT;
+ }
+
+ if (!pd->mixer_dev) {
+ DRM_DEBUG_KMS("mixer device is null.\n");
+ return -EFAULT;
+ }
+
+ ret = platform_driver_register(&hdmi_driver);
+ if (ret) {
+ DRM_DEBUG_KMS("failed to register hdmi driver.\n");
+ return ret;
+ }
+
+ ret = platform_driver_register(&mixer_driver);
+ if (ret) {
+ DRM_DEBUG_KMS("failed to register mixer driver.\n");
+ goto err_hdmidrv;
+ }
+
+ ctx = get_ctx_from_subdrv(subdrv);
+
+ ctx->hdmi_ctx = (struct exynos_drm_hdmi_context *)
+ to_context(pd->hdmi_dev);
+ if (!ctx->hdmi_ctx) {
+ DRM_DEBUG_KMS("hdmi context is null.\n");
+ ret = -EFAULT;
+ goto err_mixerdrv;
+ }
+
+ ctx->hdmi_ctx->drm_dev = drm_dev;
+
+ ctx->mixer_ctx = (struct exynos_drm_hdmi_context *)
+ to_context(pd->mixer_dev);
+ if (!ctx->mixer_ctx) {
+ DRM_DEBUG_KMS("mixer context is null.\n");
+ ret = -EFAULT;
+ goto err_mixerdrv;
+ }
+
+ ctx->mixer_ctx->drm_dev = drm_dev;
+
+ return 0;
+
+err_mixerdrv:
+ platform_driver_unregister(&mixer_driver);
+err_hdmidrv:
+ platform_driver_unregister(&hdmi_driver);
+ return ret;
+}
+
+static void hdmi_subdrv_remove(struct drm_device *drm_dev)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ platform_driver_unregister(&hdmi_driver);
+ platform_driver_unregister(&mixer_driver);
+}
+
+static void exynos_drm_hdmi_late_probe(struct work_struct *work)
+{
+ struct drm_hdmi_context *ctx = container_of(work,
+ struct drm_hdmi_context, work);
+
+ /*
+ * this function calls subdrv->probe() so this must be called
+ * after probe context.
+ *
+ * PS. subdrv->probe() will call platform_driver_register() to probe
+ * hdmi and mixer driver.
+ */
+ exynos_drm_subdrv_register(&ctx->subdrv);
+}
+
+static int __devinit exynos_drm_hdmi_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct exynos_drm_subdrv *subdrv;
+ struct drm_hdmi_context *ctx;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx) {
+ DRM_LOG_KMS("failed to alloc common hdmi context.\n");
+ return -ENOMEM;
+ }
+
+ subdrv = &ctx->subdrv;
+
+ subdrv->probe = hdmi_subdrv_probe;
+ subdrv->remove = hdmi_subdrv_remove;
+ subdrv->manager.pipe = -1;
+ subdrv->manager.ops = &drm_hdmi_manager_ops;
+ subdrv->manager.overlay_ops = &drm_hdmi_overlay_ops;
+ subdrv->manager.display_ops = &drm_hdmi_display_ops;
+ subdrv->manager.dev = dev;
+
+ platform_set_drvdata(pdev, subdrv);
+
+ INIT_WORK(&ctx->work, exynos_drm_hdmi_late_probe);
+
+ schedule_work(&ctx->work);
+
+ return 0;
+}
+
+static int hdmi_runtime_suspend(struct device *dev)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ return 0;
+}
+
+static int hdmi_runtime_resume(struct device *dev)
+{
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ return 0;
+}
+
+static const struct dev_pm_ops hdmi_pm_ops = {
+ .runtime_suspend = hdmi_runtime_suspend,
+ .runtime_resume = hdmi_runtime_resume,
+};
+
+static int __devexit exynos_drm_hdmi_remove(struct platform_device *pdev)
+{
+ struct drm_hdmi_context *ctx = platform_get_drvdata(pdev);
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ exynos_drm_subdrv_unregister(&ctx->subdrv);
+ kfree(ctx);
+
+ return 0;
+}
+
+static struct platform_driver exynos_drm_common_hdmi_driver = {
+ .probe = exynos_drm_hdmi_probe,
+ .remove = __devexit_p(exynos_drm_hdmi_remove),
+ .driver = {
+ .name = "exynos-drm-hdmi",
+ .owner = THIS_MODULE,
+ .pm = &hdmi_pm_ops,
+ },
+};
+
+static int __init exynos_drm_hdmi_init(void)
+{
+ int ret;
+
+ DRM_DEBUG_KMS("%s\n", __FILE__);
+
+ ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
+ if (ret) {
+ DRM_DEBUG_KMS("failed to register hdmi common driver.\n");
+ return ret;
+ }
+
+ return ret;
+}
+
+static void __exit exynos_drm_hdmi_exit(void)
+{
+ platform_driver_unregister(&exynos_drm_common_hdmi_driver);
+}
+
+module_init(exynos_drm_hdmi_init);
+module_exit(exynos_drm_hdmi_exit);
+
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Seung-Woo Kim, <sw0312.kim@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC DRM HDMI Driver");
+MODULE_LICENSE("GPL");