diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_encoder.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c new file mode 100644 index 00000000000..7e282e3d603 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c @@ -0,0 +1,197 @@ +/* exynos_drm_encoder.c + * + * 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> + * + * 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 <drm/drmP.h> +#include <drm/drm_crtc_helper.h> + +#include "exynos_drm_drv.h" +#include "exynos_drm_encoder.h" + +#define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\ + drm_encoder) + +/* + * exynos specific encoder structure. + * + * @drm_encoder: encoder object. + * @display: the display structure that maps to this encoder + */ +struct exynos_drm_encoder { + struct drm_encoder drm_encoder; + struct exynos_drm_display *display; +}; + +static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode) +{ + struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); + struct exynos_drm_display *display = exynos_encoder->display; + + DRM_DEBUG_KMS("encoder dpms: %d\n", mode); + + if (display->ops->dpms) + display->ops->dpms(display, mode); +} + +static bool +exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct drm_device *dev = encoder->dev; + struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); + struct exynos_drm_display *display = exynos_encoder->display; + struct drm_connector *connector; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (connector->encoder != encoder) + continue; + + if (display->ops->mode_fixup) + display->ops->mode_fixup(display, connector, mode, + adjusted_mode); + } + + return true; +} + +static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); + struct exynos_drm_display *display = exynos_encoder->display; + + if (display->ops->mode_set) + display->ops->mode_set(display, adjusted_mode); +} + +static void exynos_drm_encoder_prepare(struct drm_encoder *encoder) +{ + /* drm framework doesn't check NULL. */ +} + +static void exynos_drm_encoder_commit(struct drm_encoder *encoder) +{ + struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); + struct exynos_drm_display *display = exynos_encoder->display; + + if (display->ops->dpms) + display->ops->dpms(display, DRM_MODE_DPMS_ON); + + if (display->ops->commit) + display->ops->commit(display); +} + +static void exynos_drm_encoder_disable(struct drm_encoder *encoder) +{ + struct drm_plane *plane; + struct drm_device *dev = encoder->dev; + + exynos_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); + + /* all planes connected to this encoder should be also disabled. */ + drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) { + if (plane->crtc == encoder->crtc) + plane->funcs->disable_plane(plane); + } +} + +static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = { + .dpms = exynos_drm_encoder_dpms, + .mode_fixup = exynos_drm_encoder_mode_fixup, + .mode_set = exynos_drm_encoder_mode_set, + .prepare = exynos_drm_encoder_prepare, + .commit = exynos_drm_encoder_commit, + .disable = exynos_drm_encoder_disable, +}; + +static void exynos_drm_encoder_destroy(struct drm_encoder *encoder) +{ + struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); + + drm_encoder_cleanup(encoder); + kfree(exynos_encoder); +} + +static struct drm_encoder_funcs exynos_encoder_funcs = { + .destroy = exynos_drm_encoder_destroy, +}; + +static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder) +{ + struct drm_encoder *clone; + struct drm_device *dev = encoder->dev; + struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); + struct exynos_drm_display *display = exynos_encoder->display; + unsigned int clone_mask = 0; + int cnt = 0; + + list_for_each_entry(clone, &dev->mode_config.encoder_list, head) { + switch (display->type) { + case EXYNOS_DISPLAY_TYPE_LCD: + case EXYNOS_DISPLAY_TYPE_HDMI: + case EXYNOS_DISPLAY_TYPE_VIDI: + clone_mask |= (1 << (cnt++)); + break; + default: + continue; + } + } + + return clone_mask; +} + +void exynos_drm_encoder_setup(struct drm_device *dev) +{ + struct drm_encoder *encoder; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) + encoder->possible_clones = exynos_drm_encoder_clones(encoder); +} + +struct drm_encoder * +exynos_drm_encoder_create(struct drm_device *dev, + struct exynos_drm_display *display, + unsigned long possible_crtcs) +{ + struct drm_encoder *encoder; + struct exynos_drm_encoder *exynos_encoder; + + if (!possible_crtcs) + return NULL; + + exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL); + if (!exynos_encoder) + return NULL; + + exynos_encoder->display = display; + encoder = &exynos_encoder->drm_encoder; + encoder->possible_crtcs = possible_crtcs; + + DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); + + drm_encoder_init(dev, encoder, &exynos_encoder_funcs, + DRM_MODE_ENCODER_TMDS); + + drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs); + + DRM_DEBUG_KMS("encoder has been created\n"); + + return encoder; +} + +struct exynos_drm_display *exynos_drm_get_display(struct drm_encoder *encoder) +{ + return to_exynos_encoder(encoder)->display; +} |