![Inki Dae](/assets/img/avatar_default.png)
this driver would be used for wireless display. virtual display driver has independent crtc, encoder and connector and to use this driver, user application should send edid data to this driver from wireless display. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
446 lines
12 KiB
C
446 lines
12 KiB
C
/* exynos_drm_encoder.c
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Authors:
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* Inki Dae <inki.dae@samsung.com>
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* Joonyoung Shim <jy0922.shim@samsung.com>
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* Seung-Woo Kim <sw0312.kim@samsung.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "drmP.h"
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#include "drm_crtc_helper.h"
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#include "exynos_drm_drv.h"
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#include "exynos_drm_crtc.h"
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#include "exynos_drm_encoder.h"
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#define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\
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drm_encoder)
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/*
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* exynos specific encoder structure.
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*
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* @drm_encoder: encoder object.
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* @manager: specific encoder has its own manager to control a hardware
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* appropriately and we can access a hardware drawing on this manager.
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* @dpms: store the encoder dpms value.
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*/
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struct exynos_drm_encoder {
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struct drm_encoder drm_encoder;
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struct exynos_drm_manager *manager;
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int dpms;
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};
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static void exynos_drm_display_power(struct drm_encoder *encoder, int mode)
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{
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struct drm_device *dev = encoder->dev;
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struct drm_connector *connector;
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struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if (connector->encoder == encoder) {
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struct exynos_drm_display_ops *display_ops =
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manager->display_ops;
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DRM_DEBUG_KMS("connector[%d] dpms[%d]\n",
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connector->base.id, mode);
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if (display_ops && display_ops->power_on)
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display_ops->power_on(manager->dev, mode);
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}
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}
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}
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static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
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{
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struct drm_device *dev = encoder->dev;
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struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
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DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode);
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if (exynos_encoder->dpms == mode) {
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DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
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return;
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}
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mutex_lock(&dev->struct_mutex);
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switch (mode) {
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case DRM_MODE_DPMS_ON:
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if (manager_ops && manager_ops->apply)
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manager_ops->apply(manager->dev);
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exynos_drm_display_power(encoder, mode);
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exynos_encoder->dpms = mode;
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break;
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case DRM_MODE_DPMS_STANDBY:
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case DRM_MODE_DPMS_SUSPEND:
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case DRM_MODE_DPMS_OFF:
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exynos_drm_display_power(encoder, mode);
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exynos_encoder->dpms = mode;
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break;
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default:
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DRM_ERROR("unspecified mode %d\n", mode);
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break;
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}
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mutex_unlock(&dev->struct_mutex);
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}
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static bool
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exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct drm_device *dev = encoder->dev;
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struct drm_connector *connector;
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struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if (connector->encoder == encoder)
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if (manager_ops && manager_ops->mode_fixup)
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manager_ops->mode_fixup(manager->dev, connector,
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mode, adjusted_mode);
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}
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return true;
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}
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static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct drm_device *dev = encoder->dev;
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struct drm_connector *connector;
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struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
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struct exynos_drm_overlay *overlay = get_exynos_drm_overlay(dev,
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encoder->crtc);
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DRM_DEBUG_KMS("%s\n", __FILE__);
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if (connector->encoder == encoder) {
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if (manager_ops && manager_ops->mode_set)
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manager_ops->mode_set(manager->dev,
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adjusted_mode);
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if (overlay_ops && overlay_ops->mode_set)
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overlay_ops->mode_set(manager->dev, overlay);
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}
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}
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}
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static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
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{
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DRM_DEBUG_KMS("%s\n", __FILE__);
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/* drm framework doesn't check NULL. */
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}
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static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
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{
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struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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if (manager_ops && manager_ops->commit)
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manager_ops->commit(manager->dev);
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}
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static struct drm_crtc *
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exynos_drm_encoder_get_crtc(struct drm_encoder *encoder)
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{
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return encoder->crtc;
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}
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static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = {
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.dpms = exynos_drm_encoder_dpms,
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.mode_fixup = exynos_drm_encoder_mode_fixup,
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.mode_set = exynos_drm_encoder_mode_set,
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.prepare = exynos_drm_encoder_prepare,
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.commit = exynos_drm_encoder_commit,
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.get_crtc = exynos_drm_encoder_get_crtc,
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};
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static void exynos_drm_encoder_destroy(struct drm_encoder *encoder)
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{
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struct exynos_drm_encoder *exynos_encoder =
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to_exynos_encoder(encoder);
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DRM_DEBUG_KMS("%s\n", __FILE__);
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exynos_encoder->manager->pipe = -1;
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drm_encoder_cleanup(encoder);
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kfree(exynos_encoder);
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}
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static struct drm_encoder_funcs exynos_encoder_funcs = {
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.destroy = exynos_drm_encoder_destroy,
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};
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static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder)
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{
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struct drm_encoder *clone;
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struct drm_device *dev = encoder->dev;
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struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
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struct exynos_drm_display_ops *display_ops =
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exynos_encoder->manager->display_ops;
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unsigned int clone_mask = 0;
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int cnt = 0;
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list_for_each_entry(clone, &dev->mode_config.encoder_list, head) {
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switch (display_ops->type) {
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case EXYNOS_DISPLAY_TYPE_LCD:
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case EXYNOS_DISPLAY_TYPE_HDMI:
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case EXYNOS_DISPLAY_TYPE_VIDI:
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clone_mask |= (1 << (cnt++));
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break;
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default:
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continue;
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}
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}
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return clone_mask;
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}
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void exynos_drm_encoder_setup(struct drm_device *dev)
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{
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struct drm_encoder *encoder;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
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encoder->possible_clones = exynos_drm_encoder_clones(encoder);
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}
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struct drm_encoder *
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exynos_drm_encoder_create(struct drm_device *dev,
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struct exynos_drm_manager *manager,
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unsigned int possible_crtcs)
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{
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struct drm_encoder *encoder;
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struct exynos_drm_encoder *exynos_encoder;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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if (!manager || !possible_crtcs)
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return NULL;
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if (!manager->dev)
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return NULL;
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exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL);
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if (!exynos_encoder) {
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DRM_ERROR("failed to allocate encoder\n");
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return NULL;
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}
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exynos_encoder->dpms = DRM_MODE_DPMS_OFF;
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exynos_encoder->manager = manager;
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encoder = &exynos_encoder->drm_encoder;
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encoder->possible_crtcs = possible_crtcs;
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DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
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drm_encoder_init(dev, encoder, &exynos_encoder_funcs,
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DRM_MODE_ENCODER_TMDS);
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drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs);
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DRM_DEBUG_KMS("encoder has been created\n");
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return encoder;
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}
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struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder)
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{
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return to_exynos_encoder(encoder)->manager;
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}
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void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data,
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void (*fn)(struct drm_encoder *, void *))
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{
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struct drm_device *dev = crtc->dev;
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struct drm_encoder *encoder;
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struct exynos_drm_private *private = dev->dev_private;
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struct exynos_drm_manager *manager;
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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/*
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* if crtc is detached from encoder, check pipe,
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* otherwise check crtc attached to encoder
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*/
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if (!encoder->crtc) {
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manager = to_exynos_encoder(encoder)->manager;
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if (manager->pipe < 0 ||
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private->crtc[manager->pipe] != crtc)
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continue;
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} else {
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if (encoder->crtc != crtc)
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continue;
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}
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fn(encoder, data);
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}
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}
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void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data)
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{
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struct exynos_drm_manager *manager =
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to_exynos_encoder(encoder)->manager;
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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int crtc = *(int *)data;
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if (manager->pipe == -1)
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manager->pipe = crtc;
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if (manager_ops->enable_vblank)
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manager_ops->enable_vblank(manager->dev);
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}
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void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
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{
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struct exynos_drm_manager *manager =
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to_exynos_encoder(encoder)->manager;
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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int crtc = *(int *)data;
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if (manager->pipe == -1)
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manager->pipe = crtc;
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if (manager_ops->disable_vblank)
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manager_ops->disable_vblank(manager->dev);
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}
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void exynos_drm_encoder_crtc_plane_commit(struct drm_encoder *encoder,
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void *data)
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{
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struct exynos_drm_manager *manager =
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to_exynos_encoder(encoder)->manager;
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struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
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int zpos = DEFAULT_ZPOS;
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if (data)
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zpos = *(int *)data;
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if (overlay_ops && overlay_ops->commit)
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overlay_ops->commit(manager->dev, zpos);
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}
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void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data)
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{
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struct exynos_drm_manager *manager =
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to_exynos_encoder(encoder)->manager;
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int crtc = *(int *)data;
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int zpos = DEFAULT_ZPOS;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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/*
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* when crtc is detached from encoder, this pipe is used
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* to select manager operation
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*/
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manager->pipe = crtc;
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exynos_drm_encoder_crtc_plane_commit(encoder, &zpos);
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}
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void exynos_drm_encoder_dpms_from_crtc(struct drm_encoder *encoder, void *data)
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{
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struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
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int mode = *(int *)data;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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exynos_drm_encoder_dpms(encoder, mode);
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exynos_encoder->dpms = mode;
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}
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void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
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{
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struct drm_device *dev = encoder->dev;
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struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
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struct exynos_drm_manager *manager = exynos_encoder->manager;
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struct exynos_drm_manager_ops *manager_ops = manager->ops;
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struct drm_connector *connector;
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int mode = *(int *)data;
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DRM_DEBUG_KMS("%s\n", __FILE__);
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if (manager_ops && manager_ops->dpms)
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manager_ops->dpms(manager->dev, mode);
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/*
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* set current dpms mode to the connector connected to
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* current encoder. connector->dpms would be checked
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* at drm_helper_connector_dpms()
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*/
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list_for_each_entry(connector, &dev->mode_config.connector_list, head)
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if (connector->encoder == encoder)
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connector->dpms = mode;
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/*
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* if this condition is ok then it means that the crtc is already
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* detached from encoder and last function for detaching is properly
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* done, so clear pipe from manager to prevent repeated call.
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*/
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if (mode > DRM_MODE_DPMS_ON) {
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if (!encoder->crtc)
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manager->pipe = -1;
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}
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}
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void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data)
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{
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struct exynos_drm_manager *manager =
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to_exynos_encoder(encoder)->manager;
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struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
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struct exynos_drm_overlay *overlay = data;
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if (overlay_ops && overlay_ops->mode_set)
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overlay_ops->mode_set(manager->dev, overlay);
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}
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void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data)
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{
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struct exynos_drm_manager *manager =
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to_exynos_encoder(encoder)->manager;
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struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
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int zpos = DEFAULT_ZPOS;
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DRM_DEBUG_KMS("\n");
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if (data)
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zpos = *(int *)data;
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if (overlay_ops && overlay_ops->disable)
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overlay_ops->disable(manager->dev, zpos);
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}
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