/* * Copyright (c) 2011 Samsung Electronics Co., Ltd. * Authors: * Inki Dae <inki.dae@samsung.com> * Joonyoung Shim <jy0922.shim@samsung.com> * Seung-Woo Kim <sw0312.kim@samsung.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include "drmP.h" #include "drm_crtc_helper.h" #include <drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_encoder.h" #define MAX_EDID 256 #define to_exynos_connector(x) container_of(x, struct exynos_drm_connector,\ drm_connector) struct exynos_drm_connector { struct drm_connector drm_connector; uint32_t encoder_id; struct exynos_drm_manager *manager; }; /* convert exynos_video_timings to drm_display_mode */ static inline void convert_to_display_mode(struct drm_display_mode *mode, struct exynos_drm_panel_info *panel) { struct fb_videomode *timing = &panel->timing; DRM_DEBUG_KMS("%s\n", __FILE__); mode->clock = timing->pixclock / 1000; mode->vrefresh = timing->refresh; mode->hdisplay = timing->xres; mode->hsync_start = mode->hdisplay + timing->left_margin; mode->hsync_end = mode->hsync_start + timing->hsync_len; mode->htotal = mode->hsync_end + timing->right_margin; mode->vdisplay = timing->yres; mode->vsync_start = mode->vdisplay + timing->upper_margin; mode->vsync_end = mode->vsync_start + timing->vsync_len; mode->vtotal = mode->vsync_end + timing->lower_margin; mode->width_mm = panel->width_mm; mode->height_mm = panel->height_mm; if (timing->vmode & FB_VMODE_INTERLACED) mode->flags |= DRM_MODE_FLAG_INTERLACE; if (timing->vmode & FB_VMODE_DOUBLE) mode->flags |= DRM_MODE_FLAG_DBLSCAN; } /* convert drm_display_mode to exynos_video_timings */ static inline void convert_to_video_timing(struct fb_videomode *timing, struct drm_display_mode *mode) { DRM_DEBUG_KMS("%s\n", __FILE__); memset(timing, 0, sizeof(*timing)); timing->pixclock = mode->clock * 1000; timing->refresh = drm_mode_vrefresh(mode); timing->xres = mode->hdisplay; timing->left_margin = mode->hsync_start - mode->hdisplay; timing->hsync_len = mode->hsync_end - mode->hsync_start; timing->right_margin = mode->htotal - mode->hsync_end; timing->yres = mode->vdisplay; timing->upper_margin = mode->vsync_start - mode->vdisplay; timing->vsync_len = mode->vsync_end - mode->vsync_start; timing->lower_margin = mode->vtotal - mode->vsync_end; if (mode->flags & DRM_MODE_FLAG_INTERLACE) timing->vmode = FB_VMODE_INTERLACED; else timing->vmode = FB_VMODE_NONINTERLACED; if (mode->flags & DRM_MODE_FLAG_DBLSCAN) timing->vmode |= FB_VMODE_DOUBLE; } static int exynos_drm_connector_get_modes(struct drm_connector *connector) { struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); struct exynos_drm_manager *manager = exynos_connector->manager; struct exynos_drm_display_ops *display_ops = manager->display_ops; unsigned int count; DRM_DEBUG_KMS("%s\n", __FILE__); if (!display_ops) { DRM_DEBUG_KMS("display_ops is null.\n"); return 0; } /* * if get_edid() exists then get_edid() callback of hdmi side * is called to get edid data through i2c interface else * get timing from the FIMD driver(display controller). * * P.S. in case of lcd panel, count is always 1 if success * because lcd panel has only one mode. */ if (display_ops->get_edid) { int ret; void *edid; edid = kzalloc(MAX_EDID, GFP_KERNEL); if (!edid) { DRM_ERROR("failed to allocate edid\n"); return 0; } ret = display_ops->get_edid(manager->dev, connector, edid, MAX_EDID); if (ret < 0) { DRM_ERROR("failed to get edid data.\n"); kfree(edid); edid = NULL; return 0; } drm_mode_connector_update_edid_property(connector, edid); count = drm_add_edid_modes(connector, edid); kfree(connector->display_info.raw_edid); connector->display_info.raw_edid = edid; } else { struct drm_display_mode *mode = drm_mode_create(connector->dev); struct exynos_drm_panel_info *panel; if (display_ops->get_panel) panel = display_ops->get_panel(manager->dev); else { drm_mode_destroy(connector->dev, mode); return 0; } convert_to_display_mode(mode, panel); connector->display_info.width_mm = mode->width_mm; connector->display_info.height_mm = mode->height_mm; mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; drm_mode_set_name(mode); drm_mode_probed_add(connector, mode); count = 1; } return count; } static int exynos_drm_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); struct exynos_drm_manager *manager = exynos_connector->manager; struct exynos_drm_display_ops *display_ops = manager->display_ops; struct fb_videomode timing; int ret = MODE_BAD; DRM_DEBUG_KMS("%s\n", __FILE__); convert_to_video_timing(&timing, mode); if (display_ops && display_ops->check_timing) if (!display_ops->check_timing(manager->dev, (void *)&timing)) ret = MODE_OK; return ret; } struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector) { struct drm_device *dev = connector->dev; struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); struct drm_mode_object *obj; struct drm_encoder *encoder; DRM_DEBUG_KMS("%s\n", __FILE__); obj = drm_mode_object_find(dev, exynos_connector->encoder_id, DRM_MODE_OBJECT_ENCODER); if (!obj) { DRM_DEBUG_KMS("Unknown ENCODER ID %d\n", exynos_connector->encoder_id); return NULL; } encoder = obj_to_encoder(obj); return encoder; } static struct drm_connector_helper_funcs exynos_connector_helper_funcs = { .get_modes = exynos_drm_connector_get_modes, .mode_valid = exynos_drm_connector_mode_valid, .best_encoder = exynos_drm_best_encoder, }; /* get detection status of display device. */ static enum drm_connector_status exynos_drm_connector_detect(struct drm_connector *connector, bool force) { struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); struct exynos_drm_manager *manager = exynos_connector->manager; struct exynos_drm_display_ops *display_ops = manager->display_ops; enum drm_connector_status status = connector_status_disconnected; DRM_DEBUG_KMS("%s\n", __FILE__); if (display_ops && display_ops->is_connected) { if (display_ops->is_connected(manager->dev)) status = connector_status_connected; else status = connector_status_disconnected; } return status; } static void exynos_drm_connector_destroy(struct drm_connector *connector) { struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); DRM_DEBUG_KMS("%s\n", __FILE__); drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(exynos_connector); } static struct drm_connector_funcs exynos_connector_funcs = { .dpms = drm_helper_connector_dpms, .fill_modes = drm_helper_probe_single_connector_modes, .detect = exynos_drm_connector_detect, .destroy = exynos_drm_connector_destroy, }; struct drm_connector *exynos_drm_connector_create(struct drm_device *dev, struct drm_encoder *encoder) { struct exynos_drm_connector *exynos_connector; struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); struct drm_connector *connector; int type; int err; DRM_DEBUG_KMS("%s\n", __FILE__); exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL); if (!exynos_connector) { DRM_ERROR("failed to allocate connector\n"); return NULL; } connector = &exynos_connector->drm_connector; switch (manager->display_ops->type) { case EXYNOS_DISPLAY_TYPE_HDMI: type = DRM_MODE_CONNECTOR_HDMIA; connector->interlace_allowed = true; connector->polled = DRM_CONNECTOR_POLL_HPD; break; default: type = DRM_MODE_CONNECTOR_Unknown; break; } drm_connector_init(dev, connector, &exynos_connector_funcs, type); drm_connector_helper_add(connector, &exynos_connector_helper_funcs); err = drm_sysfs_connector_add(connector); if (err) goto err_connector; exynos_connector->encoder_id = encoder->base.id; exynos_connector->manager = manager; connector->encoder = encoder; err = drm_mode_connector_attach_encoder(connector, encoder); if (err) { DRM_ERROR("failed to attach a connector to a encoder\n"); goto err_sysfs; } DRM_DEBUG_KMS("connector has been created\n"); return connector; err_sysfs: drm_sysfs_connector_remove(connector); err_connector: drm_connector_cleanup(connector); kfree(exynos_connector); return NULL; } MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); MODULE_DESCRIPTION("Samsung SoC DRM Connector Driver"); MODULE_LICENSE("GPL");