193 lines
4.9 KiB
C
193 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
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* Author: James.Qian.Wang <james.qian.wang@arm.com>
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*
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*/
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#include "komeda_dev.h"
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#include "komeda_kms.h"
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static int
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komeda_wb_init_data_flow(struct komeda_layer *wb_layer,
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struct drm_connector_state *conn_st,
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struct komeda_crtc_state *kcrtc_st,
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struct komeda_data_flow_cfg *dflow)
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{
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struct drm_framebuffer *fb = conn_st->writeback_job->fb;
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memset(dflow, 0, sizeof(*dflow));
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dflow->out_w = fb->width;
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dflow->out_h = fb->height;
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/* the write back data comes from the compiz */
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pipeline_composition_size(kcrtc_st, &dflow->in_w, &dflow->in_h);
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dflow->input.component = &wb_layer->base.pipeline->compiz->base;
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/* compiz doesn't output alpha */
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dflow->pixel_blend_mode = DRM_MODE_BLEND_PIXEL_NONE;
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dflow->rot = DRM_MODE_ROTATE_0;
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komeda_complete_data_flow_cfg(wb_layer, dflow, fb);
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return 0;
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}
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static int
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komeda_wb_encoder_atomic_check(struct drm_encoder *encoder,
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struct drm_crtc_state *crtc_st,
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struct drm_connector_state *conn_st)
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{
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struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(crtc_st);
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struct drm_writeback_job *writeback_job = conn_st->writeback_job;
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struct komeda_layer *wb_layer;
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struct komeda_data_flow_cfg dflow;
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int err;
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if (!writeback_job)
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return 0;
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if (!crtc_st->active) {
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DRM_DEBUG_ATOMIC("Cannot write the composition result out on a inactive CRTC.\n");
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return -EINVAL;
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}
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wb_layer = to_kconn(to_wb_conn(conn_st->connector))->wb_layer;
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/*
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* No need for a full modested when the only connector changed is the
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* writeback connector.
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*/
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if (crtc_st->connectors_changed &&
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is_only_changed_connector(crtc_st, conn_st->connector))
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crtc_st->connectors_changed = false;
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err = komeda_wb_init_data_flow(wb_layer, conn_st, kcrtc_st, &dflow);
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if (err)
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return err;
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if (dflow.en_split)
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err = komeda_build_wb_split_data_flow(wb_layer,
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conn_st, kcrtc_st, &dflow);
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else
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err = komeda_build_wb_data_flow(wb_layer,
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conn_st, kcrtc_st, &dflow);
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return err;
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}
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static const struct drm_encoder_helper_funcs komeda_wb_encoder_helper_funcs = {
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.atomic_check = komeda_wb_encoder_atomic_check,
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};
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static int
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komeda_wb_connector_get_modes(struct drm_connector *connector)
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{
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return 0;
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}
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static enum drm_mode_status
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komeda_wb_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct drm_device *dev = connector->dev;
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struct drm_mode_config *mode_config = &dev->mode_config;
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int w = mode->hdisplay, h = mode->vdisplay;
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if ((w < mode_config->min_width) || (w > mode_config->max_width))
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return MODE_BAD_HVALUE;
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if ((h < mode_config->min_height) || (h > mode_config->max_height))
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return MODE_BAD_VVALUE;
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return MODE_OK;
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}
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static const struct drm_connector_helper_funcs komeda_wb_conn_helper_funcs = {
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.get_modes = komeda_wb_connector_get_modes,
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.mode_valid = komeda_wb_connector_mode_valid,
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};
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static enum drm_connector_status
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komeda_wb_connector_detect(struct drm_connector *connector, bool force)
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{
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return connector_status_connected;
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}
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static int
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komeda_wb_connector_fill_modes(struct drm_connector *connector,
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uint32_t maxX, uint32_t maxY)
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{
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return 0;
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}
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static void komeda_wb_connector_destroy(struct drm_connector *connector)
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{
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drm_connector_cleanup(connector);
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kfree(to_kconn(to_wb_conn(connector)));
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}
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static const struct drm_connector_funcs komeda_wb_connector_funcs = {
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.reset = drm_atomic_helper_connector_reset,
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.detect = komeda_wb_connector_detect,
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.fill_modes = komeda_wb_connector_fill_modes,
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.destroy = komeda_wb_connector_destroy,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static int komeda_wb_connector_add(struct komeda_kms_dev *kms,
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struct komeda_crtc *kcrtc)
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{
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struct komeda_dev *mdev = kms->base.dev_private;
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struct komeda_wb_connector *kwb_conn;
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struct drm_writeback_connector *wb_conn;
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u32 *formats, n_formats = 0;
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int err;
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if (!kcrtc->master->wb_layer)
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return 0;
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kwb_conn = kzalloc(sizeof(*kwb_conn), GFP_KERNEL);
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if (!kwb_conn)
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return -ENOMEM;
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kwb_conn->wb_layer = kcrtc->master->wb_layer;
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wb_conn = &kwb_conn->base;
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wb_conn->encoder.possible_crtcs = BIT(drm_crtc_index(&kcrtc->base));
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formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl,
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kwb_conn->wb_layer->layer_type,
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&n_formats);
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err = drm_writeback_connector_init(&kms->base, wb_conn,
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&komeda_wb_connector_funcs,
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&komeda_wb_encoder_helper_funcs,
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formats, n_formats);
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komeda_put_fourcc_list(formats);
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if (err) {
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kfree(kwb_conn);
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return err;
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}
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drm_connector_helper_add(&wb_conn->base, &komeda_wb_conn_helper_funcs);
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kcrtc->wb_conn = kwb_conn;
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return 0;
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}
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int komeda_kms_add_wb_connectors(struct komeda_kms_dev *kms,
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struct komeda_dev *mdev)
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{
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int i, err;
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for (i = 0; i < kms->n_crtcs; i++) {
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err = komeda_wb_connector_add(kms, &kms->crtcs[i]);
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if (err)
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return err;
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}
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return 0;
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}
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