linux/drivers/gpu/drm/exynos/exynos_drm_crtc.c
YoungJun Cho bca34c9a40 drm/exynos: Remove tracking log functions
This patch removes tracking log functions which were used to debug
in the early development stage and are not so important as were.
So remove them for code clean up.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-06-28 21:13:55 +09:00

406 lines
10 KiB
C

/* exynos_drm_crtc.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"
#include "exynos_drm_plane.h"
#define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
drm_crtc)
enum exynos_crtc_mode {
CRTC_MODE_NORMAL, /* normal mode */
CRTC_MODE_BLANK, /* The private plane of crtc is blank */
};
/*
* Exynos specific crtc structure.
*
* @drm_crtc: crtc object.
* @drm_plane: pointer of private plane object for this crtc
* @pipe: a crtc index created at load() with a new crtc object creation
* and the crtc object would be set to private->crtc array
* to get a crtc object corresponding to this pipe from private->crtc
* array when irq interrupt occured. the reason of using this pipe is that
* drm framework doesn't support multiple irq yet.
* we can refer to the crtc to current hardware interrupt occured through
* this pipe value.
* @dpms: store the crtc dpms value
* @mode: store the crtc mode value
*/
struct exynos_drm_crtc {
struct drm_crtc drm_crtc;
struct drm_plane *plane;
unsigned int pipe;
unsigned int dpms;
enum exynos_crtc_mode mode;
wait_queue_head_t pending_flip_queue;
atomic_t pending_flip;
};
static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
if (exynos_crtc->dpms == mode) {
DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
return;
}
if (mode > DRM_MODE_DPMS_ON) {
/* wait for the completion of page flip. */
wait_event(exynos_crtc->pending_flip_queue,
atomic_read(&exynos_crtc->pending_flip) == 0);
drm_vblank_off(crtc->dev, exynos_crtc->pipe);
}
exynos_drm_fn_encoder(crtc, &mode, exynos_drm_encoder_crtc_dpms);
exynos_crtc->dpms = mode;
}
static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
{
/* drm framework doesn't check NULL. */
}
static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
exynos_plane_commit(exynos_crtc->plane);
exynos_plane_dpms(exynos_crtc->plane, DRM_MODE_DPMS_ON);
}
static bool
exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
/* drm framework doesn't check NULL */
return true;
}
static int
exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode, int x, int y,
struct drm_framebuffer *old_fb)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct drm_plane *plane = exynos_crtc->plane;
unsigned int crtc_w;
unsigned int crtc_h;
int pipe = exynos_crtc->pipe;
int ret;
/*
* copy the mode data adjusted by mode_fixup() into crtc->mode
* so that hardware can be seet to proper mode.
*/
memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
crtc_w = crtc->fb->width - x;
crtc_h = crtc->fb->height - y;
ret = exynos_plane_mode_set(plane, crtc, crtc->fb, 0, 0, crtc_w, crtc_h,
x, y, crtc_w, crtc_h);
if (ret)
return ret;
plane->crtc = crtc;
plane->fb = crtc->fb;
exynos_drm_fn_encoder(crtc, &pipe, exynos_drm_encoder_crtc_pipe);
return 0;
}
static int exynos_drm_crtc_mode_set_commit(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct drm_plane *plane = exynos_crtc->plane;
unsigned int crtc_w;
unsigned int crtc_h;
int ret;
/* when framebuffer changing is requested, crtc's dpms should be on */
if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
DRM_ERROR("failed framebuffer changing request.\n");
return -EPERM;
}
crtc_w = crtc->fb->width - x;
crtc_h = crtc->fb->height - y;
ret = exynos_plane_mode_set(plane, crtc, crtc->fb, 0, 0, crtc_w, crtc_h,
x, y, crtc_w, crtc_h);
if (ret)
return ret;
exynos_drm_crtc_commit(crtc);
return 0;
}
static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
return exynos_drm_crtc_mode_set_commit(crtc, x, y, old_fb);
}
static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
exynos_plane_dpms(exynos_crtc->plane, DRM_MODE_DPMS_OFF);
exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
}
static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
.dpms = exynos_drm_crtc_dpms,
.prepare = exynos_drm_crtc_prepare,
.commit = exynos_drm_crtc_commit,
.mode_fixup = exynos_drm_crtc_mode_fixup,
.mode_set = exynos_drm_crtc_mode_set,
.mode_set_base = exynos_drm_crtc_mode_set_base,
.disable = exynos_drm_crtc_disable,
};
static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event)
{
struct drm_device *dev = crtc->dev;
struct exynos_drm_private *dev_priv = dev->dev_private;
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct drm_framebuffer *old_fb = crtc->fb;
int ret = -EINVAL;
/* when the page flip is requested, crtc's dpms should be on */
if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
DRM_ERROR("failed page flip request.\n");
return -EINVAL;
}
mutex_lock(&dev->struct_mutex);
if (event) {
/*
* the pipe from user always is 0 so we can set pipe number
* of current owner to event.
*/
event->pipe = exynos_crtc->pipe;
ret = drm_vblank_get(dev, exynos_crtc->pipe);
if (ret) {
DRM_DEBUG("failed to acquire vblank counter\n");
goto out;
}
spin_lock_irq(&dev->event_lock);
list_add_tail(&event->base.link,
&dev_priv->pageflip_event_list);
atomic_set(&exynos_crtc->pending_flip, 1);
spin_unlock_irq(&dev->event_lock);
crtc->fb = fb;
ret = exynos_drm_crtc_mode_set_commit(crtc, crtc->x, crtc->y,
NULL);
if (ret) {
crtc->fb = old_fb;
spin_lock_irq(&dev->event_lock);
drm_vblank_put(dev, exynos_crtc->pipe);
list_del(&event->base.link);
spin_unlock_irq(&dev->event_lock);
goto out;
}
}
out:
mutex_unlock(&dev->struct_mutex);
return ret;
}
static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct exynos_drm_private *private = crtc->dev->dev_private;
private->crtc[exynos_crtc->pipe] = NULL;
drm_crtc_cleanup(crtc);
kfree(exynos_crtc);
}
static int exynos_drm_crtc_set_property(struct drm_crtc *crtc,
struct drm_property *property,
uint64_t val)
{
struct drm_device *dev = crtc->dev;
struct exynos_drm_private *dev_priv = dev->dev_private;
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (property == dev_priv->crtc_mode_property) {
enum exynos_crtc_mode mode = val;
if (mode == exynos_crtc->mode)
return 0;
exynos_crtc->mode = mode;
switch (mode) {
case CRTC_MODE_NORMAL:
exynos_drm_crtc_commit(crtc);
break;
case CRTC_MODE_BLANK:
exynos_plane_dpms(exynos_crtc->plane,
DRM_MODE_DPMS_OFF);
break;
default:
break;
}
return 0;
}
return -EINVAL;
}
static struct drm_crtc_funcs exynos_crtc_funcs = {
.set_config = drm_crtc_helper_set_config,
.page_flip = exynos_drm_crtc_page_flip,
.destroy = exynos_drm_crtc_destroy,
.set_property = exynos_drm_crtc_set_property,
};
static const struct drm_prop_enum_list mode_names[] = {
{ CRTC_MODE_NORMAL, "normal" },
{ CRTC_MODE_BLANK, "blank" },
};
static void exynos_drm_crtc_attach_mode_property(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct exynos_drm_private *dev_priv = dev->dev_private;
struct drm_property *prop;
prop = dev_priv->crtc_mode_property;
if (!prop) {
prop = drm_property_create_enum(dev, 0, "mode", mode_names,
ARRAY_SIZE(mode_names));
if (!prop)
return;
dev_priv->crtc_mode_property = prop;
}
drm_object_attach_property(&crtc->base, prop, 0);
}
int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr)
{
struct exynos_drm_crtc *exynos_crtc;
struct exynos_drm_private *private = dev->dev_private;
struct drm_crtc *crtc;
exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
if (!exynos_crtc) {
DRM_ERROR("failed to allocate exynos crtc\n");
return -ENOMEM;
}
exynos_crtc->pipe = nr;
exynos_crtc->dpms = DRM_MODE_DPMS_OFF;
init_waitqueue_head(&exynos_crtc->pending_flip_queue);
atomic_set(&exynos_crtc->pending_flip, 0);
exynos_crtc->plane = exynos_plane_init(dev, 1 << nr, true);
if (!exynos_crtc->plane) {
kfree(exynos_crtc);
return -ENOMEM;
}
crtc = &exynos_crtc->drm_crtc;
private->crtc[nr] = crtc;
drm_crtc_init(dev, crtc, &exynos_crtc_funcs);
drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
exynos_drm_crtc_attach_mode_property(crtc);
return 0;
}
int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
{
struct exynos_drm_private *private = dev->dev_private;
struct exynos_drm_crtc *exynos_crtc =
to_exynos_crtc(private->crtc[crtc]);
if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
return -EPERM;
exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
exynos_drm_enable_vblank);
return 0;
}
void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
{
struct exynos_drm_private *private = dev->dev_private;
struct exynos_drm_crtc *exynos_crtc =
to_exynos_crtc(private->crtc[crtc]);
if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
return;
exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
exynos_drm_disable_vblank);
}
void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int crtc)
{
struct exynos_drm_private *dev_priv = dev->dev_private;
struct drm_pending_vblank_event *e, *t;
struct drm_crtc *drm_crtc = dev_priv->crtc[crtc];
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(drm_crtc);
unsigned long flags;
spin_lock_irqsave(&dev->event_lock, flags);
list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
base.link) {
/* if event's pipe isn't same as crtc then ignore it. */
if (crtc != e->pipe)
continue;
list_del(&e->base.link);
drm_send_vblank_event(dev, -1, e);
drm_vblank_put(dev, crtc);
atomic_set(&exynos_crtc->pending_flip, 0);
wake_up(&exynos_crtc->pending_flip_queue);
}
spin_unlock_irqrestore(&dev->event_lock, flags);
}