diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_encoder.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/rcar-du/rcar_du_encoder.c deleted file mode 100644 index ca3761772211..000000000000 --- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c +++ /dev/null @@ -1,111 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * rcar_du_encoder.c -- R-Car Display Unit Encoder - * - * Copyright (C) 2013-2014 Renesas Electronics Corporation - * - * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) - */ - -#include <linux/export.h> -#include <linux/slab.h> - -#include <drm/drm_bridge.h> -#include <drm/drm_crtc.h> -#include <drm/drm_managed.h> -#include <drm/drm_modeset_helper_vtables.h> -#include <drm/drm_panel.h> - -#include "rcar_du_drv.h" -#include "rcar_du_encoder.h" -#include "rcar_du_kms.h" -#include "rcar_lvds.h" - -/* ----------------------------------------------------------------------------- - * Encoder - */ - -static unsigned int rcar_du_encoder_count_ports(struct device_node *node) -{ - struct device_node *ports; - struct device_node *port; - unsigned int num_ports = 0; - - ports = of_get_child_by_name(node, "ports"); - if (!ports) - ports = of_node_get(node); - - for_each_child_of_node(ports, port) { - if (of_node_name_eq(port, "port")) - num_ports++; - } - - of_node_put(ports); - - return num_ports; -} - -static const struct drm_encoder_funcs rcar_du_encoder_funcs = { -}; - -int rcar_du_encoder_init(struct rcar_du_device *rcdu, - enum rcar_du_output output, - struct device_node *enc_node) -{ - struct rcar_du_encoder *renc; - struct drm_bridge *bridge; - - /* - * Locate the DRM bridge from the DT node. For the DPAD outputs, if the - * DT node has a single port, assume that it describes a panel and - * create a panel bridge. - */ - if ((output == RCAR_DU_OUTPUT_DPAD0 || - output == RCAR_DU_OUTPUT_DPAD1) && - rcar_du_encoder_count_ports(enc_node) == 1) { - struct drm_panel *panel = of_drm_find_panel(enc_node); - - if (IS_ERR(panel)) - return PTR_ERR(panel); - - bridge = devm_drm_panel_bridge_add_typed(rcdu->dev, panel, - DRM_MODE_CONNECTOR_DPI); - if (IS_ERR(bridge)) - return PTR_ERR(bridge); - } else { - bridge = of_drm_find_bridge(enc_node); - if (!bridge) - return -EPROBE_DEFER; - - if (output == RCAR_DU_OUTPUT_LVDS0 || - output == RCAR_DU_OUTPUT_LVDS1) - rcdu->lvds[output - RCAR_DU_OUTPUT_LVDS0] = bridge; - } - - /* - * Create and initialize the encoder. On Gen3 skip the LVDS1 output if - * the LVDS1 encoder is used as a companion for LVDS0 in dual-link - * mode. - */ - if (rcdu->info->gen >= 3 && output == RCAR_DU_OUTPUT_LVDS1) { - if (rcar_lvds_dual_link(bridge)) - return -ENOLINK; - } - - dev_dbg(rcdu->dev, "initializing encoder %pOF for output %u\n", - enc_node, output); - - renc = drmm_encoder_alloc(&rcdu->ddev, struct rcar_du_encoder, base, - &rcar_du_encoder_funcs, DRM_MODE_ENCODER_NONE, - NULL); - if (!renc) - return -ENOMEM; - - renc->output = output; - - /* - * Attach the bridge to the encoder. The bridge will create the - * connector. - */ - return drm_bridge_attach(&renc->base, bridge, NULL, 0); -} |
