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 | 243 |
1 files changed, 0 insertions, 243 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 3e048dd98b64..000000000000 --- a/drivers/gpu/drm/rcar-du/rcar_du_encoder.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * rcar_du_encoder.c -- R-Car Display Unit Encoder - * - * Copyright (C) 2013-2014 Renesas Electronics Corporation - * - * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 <linux/export.h> - -#include <drm/drmP.h> -#include <drm/drm_crtc.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_panel.h> - -#include "rcar_du_drv.h" -#include "rcar_du_encoder.h" -#include "rcar_du_kms.h" -#include "rcar_du_lvdscon.h" -#include "rcar_du_lvdsenc.h" - -/* ----------------------------------------------------------------------------- - * Encoder - */ - -static void rcar_du_encoder_disable(struct drm_encoder *encoder) -{ - struct rcar_du_encoder *renc = to_rcar_encoder(encoder); - - if (renc->connector && renc->connector->panel) { - drm_panel_disable(renc->connector->panel); - drm_panel_unprepare(renc->connector->panel); - } - - if (renc->lvds) - rcar_du_lvdsenc_enable(renc->lvds, encoder->crtc, false); -} - -static void rcar_du_encoder_enable(struct drm_encoder *encoder) -{ - struct rcar_du_encoder *renc = to_rcar_encoder(encoder); - - if (renc->lvds) - rcar_du_lvdsenc_enable(renc->lvds, encoder->crtc, true); - - if (renc->connector && renc->connector->panel) { - drm_panel_prepare(renc->connector->panel); - drm_panel_enable(renc->connector->panel); - } -} - -static int rcar_du_encoder_atomic_check(struct drm_encoder *encoder, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) -{ - struct rcar_du_encoder *renc = to_rcar_encoder(encoder); - struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; - const struct drm_display_mode *mode = &crtc_state->mode; - struct drm_connector *connector = conn_state->connector; - struct drm_device *dev = encoder->dev; - - /* - * Only panel-related encoder types require validation here, everything - * else is handled by the bridge drivers. - */ - if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS) { - const struct drm_display_mode *panel_mode; - - if (list_empty(&connector->modes)) { - dev_dbg(dev->dev, "encoder: empty modes list\n"); - return -EINVAL; - } - - panel_mode = list_first_entry(&connector->modes, - struct drm_display_mode, head); - - /* We're not allowed to modify the resolution. */ - if (mode->hdisplay != panel_mode->hdisplay || - mode->vdisplay != panel_mode->vdisplay) - return -EINVAL; - - /* - * The flat panel mode is fixed, just copy it to the adjusted - * mode. - */ - drm_mode_copy(adjusted_mode, panel_mode); - } - - if (renc->lvds) - rcar_du_lvdsenc_atomic_check(renc->lvds, adjusted_mode); - - return 0; -} - -static void rcar_du_encoder_mode_set(struct drm_encoder *encoder, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) -{ - struct rcar_du_encoder *renc = to_rcar_encoder(encoder); - struct drm_display_info *info = &conn_state->connector->display_info; - enum rcar_lvds_mode mode; - - rcar_du_crtc_route_output(crtc_state->crtc, renc->output); - - if (!renc->lvds) { - /* - * The DU driver creates connectors only for the outputs of the - * internal LVDS encoders. - */ - renc->connector = NULL; - return; - } - - renc->connector = to_rcar_connector(conn_state->connector); - - if (!info->num_bus_formats || !info->bus_formats) { - dev_err(encoder->dev->dev, "no LVDS bus format reported\n"); - return; - } - - switch (info->bus_formats[0]) { - case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG: - case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA: - mode = RCAR_LVDS_MODE_JEIDA; - break; - case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG: - mode = RCAR_LVDS_MODE_VESA; - break; - default: - dev_err(encoder->dev->dev, - "unsupported LVDS bus format 0x%04x\n", - info->bus_formats[0]); - return; - } - - if (info->bus_flags & DRM_BUS_FLAG_DATA_LSB_TO_MSB) - mode |= RCAR_LVDS_MODE_MIRROR; - - rcar_du_lvdsenc_set_mode(renc->lvds, mode); -} - -static const struct drm_encoder_helper_funcs encoder_helper_funcs = { - .atomic_mode_set = rcar_du_encoder_mode_set, - .disable = rcar_du_encoder_disable, - .enable = rcar_du_encoder_enable, - .atomic_check = rcar_du_encoder_atomic_check, -}; - -static const struct drm_encoder_funcs encoder_funcs = { - .destroy = drm_encoder_cleanup, -}; - -int rcar_du_encoder_init(struct rcar_du_device *rcdu, - enum rcar_du_output output, - struct device_node *enc_node, - struct device_node *con_node) -{ - struct rcar_du_encoder *renc; - struct drm_encoder *encoder; - struct drm_bridge *bridge = NULL; - int ret; - - renc = devm_kzalloc(rcdu->dev, sizeof(*renc), GFP_KERNEL); - if (renc == NULL) - return -ENOMEM; - - renc->output = output; - encoder = rcar_encoder_to_drm_encoder(renc); - - switch (output) { - case RCAR_DU_OUTPUT_LVDS0: - renc->lvds = rcdu->lvds[0]; - break; - - case RCAR_DU_OUTPUT_LVDS1: - renc->lvds = rcdu->lvds[1]; - break; - - default: - break; - } - - if (enc_node) { - dev_dbg(rcdu->dev, "initializing encoder %s for output %u\n", - of_node_full_name(enc_node), output); - - /* Locate the DRM bridge from the encoder DT node. */ - bridge = of_drm_find_bridge(enc_node); - if (!bridge) { - ret = -EPROBE_DEFER; - goto done; - } - } else { - dev_dbg(rcdu->dev, - "initializing internal encoder for output %u\n", - output); - } - - ret = drm_encoder_init(rcdu->ddev, encoder, &encoder_funcs, - DRM_MODE_ENCODER_NONE, NULL); - if (ret < 0) - goto done; - - drm_encoder_helper_add(encoder, &encoder_helper_funcs); - - if (bridge) { - /* - * Attach the bridge to the encoder. The bridge will create the - * connector. - */ - ret = drm_bridge_attach(encoder, bridge, NULL); - if (ret) { - drm_encoder_cleanup(encoder); - return ret; - } - } else { - /* There's no bridge, create the connector manually. */ - switch (output) { - case RCAR_DU_OUTPUT_LVDS0: - case RCAR_DU_OUTPUT_LVDS1: - ret = rcar_du_lvds_connector_init(rcdu, renc, con_node); - break; - - default: - ret = -EINVAL; - break; - } - } - -done: - if (ret < 0) { - if (encoder->name) - encoder->funcs->destroy(encoder); - devm_kfree(rcdu->dev, renc); - } - - return ret; -} |