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path: root/drivers/gpu/drm/rcar-du/rcar_du_encoder.c
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Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_encoder.c')
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_encoder.c111
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);
-}