![Seung-Woo Kim](/assets/img/avatar_default.png)
These formats(NV12M, NV12MT and YUV420M) have non contiguous multi planes, so each plane uses different buffer. The exynos drm should support multi buffer for them. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> 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>
435 lines
12 KiB
C
435 lines
12 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>
|
|
*
|
|
* 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 "exynos_drm_crtc.h"
|
|
#include "exynos_drm_drv.h"
|
|
#include "exynos_drm_fb.h"
|
|
#include "exynos_drm_encoder.h"
|
|
#include "exynos_drm_gem.h"
|
|
|
|
#define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
|
|
drm_crtc)
|
|
|
|
/*
|
|
* Exynos specific crtc structure.
|
|
*
|
|
* @drm_crtc: crtc object.
|
|
* @overlay: contain information common to display controller and hdmi and
|
|
* contents of this overlay object would be copied to sub driver size.
|
|
* @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
|
|
*/
|
|
struct exynos_drm_crtc {
|
|
struct drm_crtc drm_crtc;
|
|
struct exynos_drm_overlay overlay;
|
|
unsigned int pipe;
|
|
unsigned int dpms;
|
|
};
|
|
|
|
static void exynos_drm_crtc_apply(struct drm_crtc *crtc)
|
|
{
|
|
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
|
|
struct exynos_drm_overlay *overlay = &exynos_crtc->overlay;
|
|
|
|
exynos_drm_fn_encoder(crtc, overlay,
|
|
exynos_drm_encoder_crtc_mode_set);
|
|
exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
|
|
exynos_drm_encoder_crtc_commit);
|
|
}
|
|
|
|
int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
|
|
struct drm_framebuffer *fb,
|
|
struct drm_display_mode *mode,
|
|
struct exynos_drm_crtc_pos *pos)
|
|
{
|
|
struct exynos_drm_gem_buf *buffer;
|
|
unsigned int actual_w;
|
|
unsigned int actual_h;
|
|
int nr = exynos_drm_format_num_buffers(fb->pixel_format);
|
|
int i;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
buffer = exynos_drm_fb_buffer(fb, i);
|
|
if (!buffer) {
|
|
DRM_LOG_KMS("buffer is null\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
overlay->dma_addr[i] = buffer->dma_addr;
|
|
overlay->vaddr[i] = buffer->kvaddr;
|
|
|
|
DRM_DEBUG_KMS("buffer: %d, vaddr = 0x%lx, dma_addr = 0x%lx\n",
|
|
i, (unsigned long)overlay->vaddr[i],
|
|
(unsigned long)overlay->dma_addr[i]);
|
|
}
|
|
|
|
actual_w = min((mode->hdisplay - pos->crtc_x), pos->crtc_w);
|
|
actual_h = min((mode->vdisplay - pos->crtc_y), pos->crtc_h);
|
|
|
|
/* set drm framebuffer data. */
|
|
overlay->fb_x = pos->fb_x;
|
|
overlay->fb_y = pos->fb_y;
|
|
overlay->fb_width = fb->width;
|
|
overlay->fb_height = fb->height;
|
|
overlay->bpp = fb->bits_per_pixel;
|
|
overlay->pitch = fb->pitches[0];
|
|
overlay->pixel_format = fb->pixel_format;
|
|
|
|
/* set overlay range to be displayed. */
|
|
overlay->crtc_x = pos->crtc_x;
|
|
overlay->crtc_y = pos->crtc_y;
|
|
overlay->crtc_width = actual_w;
|
|
overlay->crtc_height = actual_h;
|
|
|
|
/* set drm mode data. */
|
|
overlay->mode_width = mode->hdisplay;
|
|
overlay->mode_height = mode->vdisplay;
|
|
overlay->refresh = mode->vrefresh;
|
|
overlay->scan_flag = mode->flags;
|
|
|
|
DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)",
|
|
overlay->crtc_x, overlay->crtc_y,
|
|
overlay->crtc_width, overlay->crtc_height);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int exynos_drm_crtc_update(struct drm_crtc *crtc)
|
|
{
|
|
struct exynos_drm_crtc *exynos_crtc;
|
|
struct exynos_drm_overlay *overlay;
|
|
struct exynos_drm_crtc_pos pos;
|
|
struct drm_display_mode *mode = &crtc->mode;
|
|
struct drm_framebuffer *fb = crtc->fb;
|
|
|
|
if (!mode || !fb)
|
|
return -EINVAL;
|
|
|
|
exynos_crtc = to_exynos_crtc(crtc);
|
|
overlay = &exynos_crtc->overlay;
|
|
|
|
memset(&pos, 0, sizeof(struct exynos_drm_crtc_pos));
|
|
|
|
/* it means the offset of framebuffer to be displayed. */
|
|
pos.fb_x = crtc->x;
|
|
pos.fb_y = crtc->y;
|
|
|
|
/* OSD position to be displayed. */
|
|
pos.crtc_x = 0;
|
|
pos.crtc_y = 0;
|
|
pos.crtc_w = fb->width - crtc->x;
|
|
pos.crtc_h = fb->height - crtc->y;
|
|
|
|
return exynos_drm_overlay_update(overlay, crtc->fb, mode, &pos);
|
|
}
|
|
|
|
static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
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;
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
switch (mode) {
|
|
case DRM_MODE_DPMS_ON:
|
|
exynos_drm_fn_encoder(crtc, &mode,
|
|
exynos_drm_encoder_crtc_dpms);
|
|
exynos_crtc->dpms = mode;
|
|
break;
|
|
case DRM_MODE_DPMS_STANDBY:
|
|
case DRM_MODE_DPMS_SUSPEND:
|
|
case DRM_MODE_DPMS_OFF:
|
|
exynos_drm_fn_encoder(crtc, &mode,
|
|
exynos_drm_encoder_crtc_dpms);
|
|
exynos_crtc->dpms = mode;
|
|
break;
|
|
default:
|
|
DRM_ERROR("unspecified mode %d\n", mode);
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
}
|
|
|
|
static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
|
|
{
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
/* 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);
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
/*
|
|
* when set_crtc is requested from user or at booting time,
|
|
* crtc->commit would be called without dpms call so if dpms is
|
|
* no power on then crtc->dpms should be called
|
|
* with DRM_MODE_DPMS_ON for the hardware power to be on.
|
|
*/
|
|
if (exynos_crtc->dpms != DRM_MODE_DPMS_ON) {
|
|
int mode = DRM_MODE_DPMS_ON;
|
|
|
|
/*
|
|
* enable hardware(power on) to all encoders hdmi connected
|
|
* to current crtc.
|
|
*/
|
|
exynos_drm_crtc_dpms(crtc, mode);
|
|
/*
|
|
* enable dma to all encoders connected to current crtc and
|
|
* lcd panel.
|
|
*/
|
|
exynos_drm_fn_encoder(crtc, &mode,
|
|
exynos_drm_encoder_dpms_from_crtc);
|
|
}
|
|
|
|
exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
|
|
exynos_drm_encoder_crtc_commit);
|
|
}
|
|
|
|
static bool
|
|
exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
/* 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)
|
|
{
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
mode = adjusted_mode;
|
|
|
|
return exynos_drm_crtc_update(crtc);
|
|
}
|
|
|
|
static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
|
|
struct drm_framebuffer *old_fb)
|
|
{
|
|
int ret;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
ret = exynos_drm_crtc_update(crtc);
|
|
if (ret)
|
|
return ret;
|
|
|
|
exynos_drm_crtc_apply(crtc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void exynos_drm_crtc_load_lut(struct drm_crtc *crtc)
|
|
{
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
/* drm framework doesn't check NULL */
|
|
}
|
|
|
|
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,
|
|
.load_lut = exynos_drm_crtc_load_lut,
|
|
};
|
|
|
|
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;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
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;
|
|
|
|
list_add_tail(&event->base.link,
|
|
&dev_priv->pageflip_event_list);
|
|
|
|
ret = drm_vblank_get(dev, exynos_crtc->pipe);
|
|
if (ret) {
|
|
DRM_DEBUG("failed to acquire vblank counter\n");
|
|
list_del(&event->base.link);
|
|
|
|
goto out;
|
|
}
|
|
|
|
crtc->fb = fb;
|
|
ret = exynos_drm_crtc_update(crtc);
|
|
if (ret) {
|
|
crtc->fb = old_fb;
|
|
drm_vblank_put(dev, exynos_crtc->pipe);
|
|
list_del(&event->base.link);
|
|
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* the values related to a buffer of the drm framebuffer
|
|
* to be applied should be set at here. because these values
|
|
* first, are set to shadow registers and then to
|
|
* real registers at vsync front porch period.
|
|
*/
|
|
exynos_drm_crtc_apply(crtc);
|
|
}
|
|
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;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
private->crtc[exynos_crtc->pipe] = NULL;
|
|
|
|
drm_crtc_cleanup(crtc);
|
|
kfree(exynos_crtc);
|
|
}
|
|
|
|
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,
|
|
};
|
|
|
|
struct exynos_drm_overlay *get_exynos_drm_overlay(struct drm_device *dev,
|
|
struct drm_crtc *crtc)
|
|
{
|
|
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
|
|
|
|
return &exynos_crtc->overlay;
|
|
}
|
|
|
|
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;
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
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;
|
|
exynos_crtc->overlay.zpos = DEFAULT_ZPOS;
|
|
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);
|
|
|
|
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]);
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
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]);
|
|
|
|
DRM_DEBUG_KMS("%s\n", __FILE__);
|
|
|
|
if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
|
|
return;
|
|
|
|
exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
|
|
exynos_drm_disable_vblank);
|
|
}
|
|
|
|
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 CRTC Driver");
|
|
MODULE_LICENSE("GPL");
|