diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/output.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c new file mode 100644 index 000000000..ce21c798c --- /dev/null +++ b/drivers/gpu/drm/omapdrm/dss/output.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Archit Taneja <archit@ti.com> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_graph.h> + +#include <drm/drm_bridge.h> +#include <drm/drm_panel.h> + +#include "dss.h" +#include "omapdss.h" + +int omapdss_device_init_output(struct omap_dss_device *out, + struct drm_bridge *local_bridge) +{ + struct device_node *remote_node; + int ret; + + remote_node = of_graph_get_remote_node(out->dev->of_node, + out->of_port, 0); + if (!remote_node) { + dev_dbg(out->dev, "failed to find video sink\n"); + return 0; + } + + out->next = omapdss_find_device_by_node(remote_node); + out->bridge = of_drm_find_bridge(remote_node); + out->panel = of_drm_find_panel(remote_node); + if (IS_ERR(out->panel)) + out->panel = NULL; + + of_node_put(remote_node); + + if (out->next && out->type != out->next->type) { + dev_err(out->dev, "output type and display type don't match\n"); + ret = -EINVAL; + goto error; + } + + if (out->panel) { + struct drm_bridge *bridge; + + bridge = drm_panel_bridge_add(out->panel); + if (IS_ERR(bridge)) { + dev_err(out->dev, + "unable to create panel bridge (%ld)\n", + PTR_ERR(bridge)); + ret = PTR_ERR(bridge); + goto error; + } + + out->bridge = bridge; + } + + if (local_bridge) { + if (!out->bridge) { + ret = -EPROBE_DEFER; + goto error; + } + + out->next_bridge = out->bridge; + out->bridge = local_bridge; + } + + if (!out->next && !out->bridge) { + ret = -EPROBE_DEFER; + goto error; + } + + return 0; + +error: + omapdss_device_cleanup_output(out); + out->next = NULL; + return ret; +} +EXPORT_SYMBOL(omapdss_device_init_output); + +void omapdss_device_cleanup_output(struct omap_dss_device *out) +{ + if (out->bridge && out->panel) + drm_panel_bridge_remove(out->next_bridge ? + out->next_bridge : out->bridge); + + if (out->next) + omapdss_device_put(out->next); +} +EXPORT_SYMBOL(omapdss_device_cleanup_output); + +int dss_install_mgr_ops(struct dss_device *dss, + const struct dss_mgr_ops *mgr_ops, + struct omap_drm_private *priv) +{ + if (dss->mgr_ops) + return -EBUSY; + + dss->mgr_ops = mgr_ops; + dss->mgr_ops_priv = priv; + + return 0; +} +EXPORT_SYMBOL(dss_install_mgr_ops); + +void dss_uninstall_mgr_ops(struct dss_device *dss) +{ + dss->mgr_ops = NULL; + dss->mgr_ops_priv = NULL; +} +EXPORT_SYMBOL(dss_uninstall_mgr_ops); + +void dss_mgr_set_timings(struct omap_dss_device *dssdev, + const struct videomode *vm) +{ + dssdev->dss->mgr_ops->set_timings(dssdev->dss->mgr_ops_priv, + dssdev->dispc_channel, vm); +} +EXPORT_SYMBOL(dss_mgr_set_timings); + +void dss_mgr_set_lcd_config(struct omap_dss_device *dssdev, + const struct dss_lcd_mgr_config *config) +{ + dssdev->dss->mgr_ops->set_lcd_config(dssdev->dss->mgr_ops_priv, + dssdev->dispc_channel, config); +} +EXPORT_SYMBOL(dss_mgr_set_lcd_config); + +int dss_mgr_enable(struct omap_dss_device *dssdev) +{ + return dssdev->dss->mgr_ops->enable(dssdev->dss->mgr_ops_priv, + dssdev->dispc_channel); +} +EXPORT_SYMBOL(dss_mgr_enable); + +void dss_mgr_disable(struct omap_dss_device *dssdev) +{ + dssdev->dss->mgr_ops->disable(dssdev->dss->mgr_ops_priv, + dssdev->dispc_channel); +} +EXPORT_SYMBOL(dss_mgr_disable); + +void dss_mgr_start_update(struct omap_dss_device *dssdev) +{ + dssdev->dss->mgr_ops->start_update(dssdev->dss->mgr_ops_priv, + dssdev->dispc_channel); +} +EXPORT_SYMBOL(dss_mgr_start_update); + +int dss_mgr_register_framedone_handler(struct omap_dss_device *dssdev, + void (*handler)(void *), void *data) +{ + struct dss_device *dss = dssdev->dss; + + return dss->mgr_ops->register_framedone_handler(dss->mgr_ops_priv, + dssdev->dispc_channel, + handler, data); +} +EXPORT_SYMBOL(dss_mgr_register_framedone_handler); + +void dss_mgr_unregister_framedone_handler(struct omap_dss_device *dssdev, + void (*handler)(void *), void *data) +{ + struct dss_device *dss = dssdev->dss; + + dss->mgr_ops->unregister_framedone_handler(dss->mgr_ops_priv, + dssdev->dispc_channel, + handler, data); +} +EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler); |