diff options
Diffstat (limited to 'drivers/gpu/drm/tilcdc/tilcdc_external.c')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_external.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_external.c b/drivers/gpu/drm/tilcdc/tilcdc_external.c deleted file mode 100644 index 3b86d002ef62..000000000000 --- a/drivers/gpu/drm/tilcdc/tilcdc_external.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2015 Texas Instruments - * Author: Jyri Sarha <jsarha@ti.com> - */ - -#include <linux/component.h> -#include <linux/of_graph.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_bridge.h> -#include <drm/drm_of.h> -#include <drm/drm_simple_kms_helper.h> - -#include "tilcdc_drv.h" -#include "tilcdc_external.h" - -static const struct tilcdc_panel_info panel_info_tda998x = { - .ac_bias = 255, - .ac_bias_intrpt = 0, - .dma_burst_sz = 16, - .bpp = 16, - .fdd = 0x80, - .tft_alt_mode = 0, - .invert_pxl_clk = 1, - .sync_edge = 1, - .sync_ctrl = 1, - .raster_order = 0, -}; - -static const struct tilcdc_panel_info panel_info_default = { - .ac_bias = 255, - .ac_bias_intrpt = 0, - .dma_burst_sz = 16, - .bpp = 16, - .fdd = 0x80, - .tft_alt_mode = 0, - .sync_edge = 0, - .sync_ctrl = 1, - .raster_order = 0, -}; - -static -struct drm_connector *tilcdc_encoder_find_connector(struct drm_device *ddev, - struct drm_encoder *encoder) -{ - struct drm_connector *connector; - - list_for_each_entry(connector, &ddev->mode_config.connector_list, head) { - if (drm_connector_has_possible_encoder(connector, encoder)) - return connector; - } - - dev_err(ddev->dev, "No connector found for %s encoder (id %d)\n", - encoder->name, encoder->base.id); - - return NULL; -} - -int tilcdc_add_component_encoder(struct drm_device *ddev) -{ - struct tilcdc_drm_private *priv = ddev->dev_private; - struct drm_encoder *encoder = NULL, *iter; - - list_for_each_entry(iter, &ddev->mode_config.encoder_list, head) - if (iter->possible_crtcs & (1 << priv->crtc->index)) { - encoder = iter; - break; - } - - if (!encoder) { - dev_err(ddev->dev, "%s: No suitable encoder found\n", __func__); - return -ENODEV; - } - - priv->external_connector = - tilcdc_encoder_find_connector(ddev, encoder); - - if (!priv->external_connector) - return -ENODEV; - - /* Only tda998x is supported at the moment. */ - tilcdc_crtc_set_simulate_vesa_sync(priv->crtc, true); - tilcdc_crtc_set_panel_info(priv->crtc, &panel_info_tda998x); - - return 0; -} - -static -int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge) -{ - struct tilcdc_drm_private *priv = ddev->dev_private; - int ret; - - priv->external_encoder->possible_crtcs = BIT(0); - - ret = drm_bridge_attach(priv->external_encoder, bridge, NULL, 0); - if (ret) - return ret; - - tilcdc_crtc_set_panel_info(priv->crtc, &panel_info_default); - - priv->external_connector = - tilcdc_encoder_find_connector(ddev, priv->external_encoder); - if (!priv->external_connector) - return -ENODEV; - - return 0; -} - -int tilcdc_attach_external_device(struct drm_device *ddev) -{ - struct tilcdc_drm_private *priv = ddev->dev_private; - struct drm_bridge *bridge; - struct drm_panel *panel; - int ret; - - ret = drm_of_find_panel_or_bridge(ddev->dev->of_node, 0, 0, - &panel, &bridge); - if (ret == -ENODEV) - return 0; - else if (ret) - return ret; - - priv->external_encoder = devm_kzalloc(ddev->dev, - sizeof(*priv->external_encoder), - GFP_KERNEL); - if (!priv->external_encoder) - return -ENOMEM; - - ret = drm_simple_encoder_init(ddev, priv->external_encoder, - DRM_MODE_ENCODER_NONE); - if (ret) { - dev_err(ddev->dev, "drm_encoder_init() failed %d\n", ret); - return ret; - } - - if (panel) { - bridge = devm_drm_panel_bridge_add_typed(ddev->dev, panel, - DRM_MODE_CONNECTOR_DPI); - if (IS_ERR(bridge)) { - ret = PTR_ERR(bridge); - goto err_encoder_cleanup; - } - } - - ret = tilcdc_attach_bridge(ddev, bridge); - if (ret) - goto err_encoder_cleanup; - - return 0; - -err_encoder_cleanup: - drm_encoder_cleanup(priv->external_encoder); - return ret; -} - -static int dev_match_of(struct device *dev, void *data) -{ - return dev->of_node == data; -} - -int tilcdc_get_external_components(struct device *dev, - struct component_match **match) -{ - struct device_node *node; - - node = of_graph_get_remote_node(dev->of_node, 0, 0); - - if (!of_device_is_compatible(node, "nxp,tda998x")) { - of_node_put(node); - return 0; - } - - if (match) - drm_of_component_match_add(dev, match, dev_match_of, node); - of_node_put(node); - return 1; -} |