![Joonyoung Shim](/assets/img/avatar_default.png)
The exynos fimd supports 5 window overlays. Only one window overlay of fimd is used by the crtc, so we need plane feature to use the rest window overlays. This creates one ioctl exynos specific - DRM_EXYNOS_PLANE_SET_ZPOS, it is the ioctl to decide for user to assign which window overlay. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
408 lines
11 KiB
C
408 lines
11 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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DRM_DEBUG_KMS("%s\n", __FILE__);
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/* drm framework doesn't check NULL. */
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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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mode = adjusted_mode;
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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, 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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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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MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
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MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
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MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
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MODULE_DESCRIPTION("Samsung SoC DRM Encoder Driver");
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MODULE_LICENSE("GPL");
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