blob: 29423e757d365edce655e89aa1ca2f16fe49fba2 [file] [log] [blame]
/*
* i.MX IPUv3 DP Overlay Planes
*
* Copyright (C) 2013 Philipp Zabel, Pengutronix
*
* 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.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include "video/imx-ipu-v3.h"
#include "ipuv3-plane.h"
static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
{
return container_of(p, struct ipu_plane, base);
}
static const uint32_t ipu_plane_formats[] = {
DRM_FORMAT_ARGB1555,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_ABGR1555,
DRM_FORMAT_XBGR1555,
DRM_FORMAT_RGBA5551,
DRM_FORMAT_BGRA5551,
DRM_FORMAT_ARGB4444,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_RGBX8888,
DRM_FORMAT_BGRA8888,
DRM_FORMAT_BGRA8888,
DRM_FORMAT_UYVY,
DRM_FORMAT_VYUY,
DRM_FORMAT_YUYV,
DRM_FORMAT_YVYU,
DRM_FORMAT_YUV420,
DRM_FORMAT_YVU420,
DRM_FORMAT_RGB565,
};
int ipu_plane_irq(struct ipu_plane *ipu_plane)
{
return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
IPU_IRQ_EOF);
}
static inline unsigned long
drm_plane_state_to_eba(struct drm_plane_state *state)
{
struct drm_framebuffer *fb = state->fb;
struct drm_gem_cma_object *cma_obj;
cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
BUG_ON(!cma_obj);
return cma_obj->paddr + fb->offsets[0] +
fb->pitches[0] * (state->src_y >> 16) +
(fb->bits_per_pixel >> 3) * (state->src_x >> 16);
}
static inline unsigned long
drm_plane_state_to_ubo(struct drm_plane_state *state)
{
struct drm_framebuffer *fb = state->fb;
struct drm_gem_cma_object *cma_obj;
unsigned long eba = drm_plane_state_to_eba(state);
cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
BUG_ON(!cma_obj);
return cma_obj->paddr + fb->offsets[1] +
fb->pitches[1] * (state->src_y >> 16) / 2 +
(state->src_x >> 16) / 2 - eba;
}
static inline unsigned long
drm_plane_state_to_vbo(struct drm_plane_state *state)
{
struct drm_framebuffer *fb = state->fb;
struct drm_gem_cma_object *cma_obj;
unsigned long eba = drm_plane_state_to_eba(state);
cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
BUG_ON(!cma_obj);
return cma_obj->paddr + fb->offsets[2] +
fb->pitches[2] * (state->src_y >> 16) / 2 +
(state->src_x >> 16) / 2 - eba;
}
static void ipu_plane_atomic_set_base(struct ipu_plane *ipu_plane,
struct drm_plane_state *old_state)
{
struct drm_plane *plane = &ipu_plane->base;
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
unsigned long eba, ubo, vbo;
int active;
eba = drm_plane_state_to_eba(state);
switch (fb->pixel_format) {
case DRM_FORMAT_YUV420:
case DRM_FORMAT_YVU420:
if (old_state->fb)
break;
/*
* Multiplanar formats have to meet the following restrictions:
* - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
* - EBA, UBO and VBO are a multiple of 8
* - UBO and VBO are unsigned and not larger than 0xfffff8
* - Only EBA may be changed while scanout is active
* - The strides of U and V planes must be identical.
*/
ubo = drm_plane_state_to_ubo(state);
vbo = drm_plane_state_to_vbo(state);
if (fb->pixel_format == DRM_FORMAT_YUV420)
ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
fb->pitches[1], ubo, vbo);
else
ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
fb->pitches[1], vbo, ubo);
dev_dbg(ipu_plane->base.dev->dev,
"phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
state->src_x >> 16, state->src_y >> 16);
break;
default:
dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
eba, state->src_x >> 16, state->src_y >> 16);
break;
}
if (old_state->fb) {
active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
} else {
ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
}
}
void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
{
if (!IS_ERR_OR_NULL(ipu_plane->dp))
ipu_dp_put(ipu_plane->dp);
if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
ipu_dmfc_put(ipu_plane->dmfc);
if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
ipu_idmac_put(ipu_plane->ipu_ch);
}
int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
{
int ret;
ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
if (IS_ERR(ipu_plane->ipu_ch)) {
ret = PTR_ERR(ipu_plane->ipu_ch);
DRM_ERROR("failed to get idmac channel: %d\n", ret);
return ret;
}
ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
if (IS_ERR(ipu_plane->dmfc)) {
ret = PTR_ERR(ipu_plane->dmfc);
DRM_ERROR("failed to get dmfc: ret %d\n", ret);
goto err_out;
}
if (ipu_plane->dp_flow >= 0) {
ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
if (IS_ERR(ipu_plane->dp)) {
ret = PTR_ERR(ipu_plane->dp);
DRM_ERROR("failed to get dp flow: %d\n", ret);
goto err_out;
}
}
return 0;
err_out:
ipu_plane_put_resources(ipu_plane);
return ret;
}
static void ipu_plane_enable(struct ipu_plane *ipu_plane)
{
if (ipu_plane->dp)
ipu_dp_enable(ipu_plane->ipu);
ipu_dmfc_enable_channel(ipu_plane->dmfc);
ipu_idmac_enable_channel(ipu_plane->ipu_ch);
if (ipu_plane->dp)
ipu_dp_enable_channel(ipu_plane->dp);
}
static void ipu_plane_disable(struct ipu_plane *ipu_plane)
{
ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
if (ipu_plane->dp)
ipu_dp_disable_channel(ipu_plane->dp);
ipu_idmac_disable_channel(ipu_plane->ipu_ch);
ipu_dmfc_disable_channel(ipu_plane->dmfc);
if (ipu_plane->dp)
ipu_dp_disable(ipu_plane->ipu);
}
static int ipu_disable_plane(struct drm_plane *plane)
{
struct ipu_plane *ipu_plane = to_ipu_plane(plane);
DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
ipu_plane_disable(ipu_plane);
return 0;
}
static void ipu_plane_destroy(struct drm_plane *plane)
{
struct ipu_plane *ipu_plane = to_ipu_plane(plane);
DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
ipu_disable_plane(plane);
drm_plane_cleanup(plane);
kfree(ipu_plane);
}
static const struct drm_plane_funcs ipu_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = ipu_plane_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static int ipu_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_plane_state *old_state = plane->state;
struct drm_crtc_state *crtc_state;
struct device *dev = plane->dev->dev;
struct drm_framebuffer *fb = state->fb;
struct drm_framebuffer *old_fb = old_state->fb;
unsigned long eba, ubo, vbo, old_ubo, old_vbo;
/* Ok to disable */
if (!fb)
return 0;
if (!state->crtc)
return -EINVAL;
crtc_state =
drm_atomic_get_existing_crtc_state(state->state, state->crtc);
if (WARN_ON(!crtc_state))
return -EINVAL;
/* CRTC should be enabled */
if (!crtc_state->enable)
return -EINVAL;
/* no scaling */
if (state->src_w >> 16 != state->crtc_w ||
state->src_h >> 16 != state->crtc_h)
return -EINVAL;
switch (plane->type) {
case DRM_PLANE_TYPE_PRIMARY:
/* full plane doesn't support partial off screen */
if (state->crtc_x || state->crtc_y ||
state->crtc_w != crtc_state->adjusted_mode.hdisplay ||
state->crtc_h != crtc_state->adjusted_mode.vdisplay)
return -EINVAL;
/* full plane minimum width is 13 pixels */
if (state->crtc_w < 13)
return -EINVAL;
break;
case DRM_PLANE_TYPE_OVERLAY:
if (state->crtc_x < 0 || state->crtc_y < 0)
return -EINVAL;
if (state->crtc_x + state->crtc_w >
crtc_state->adjusted_mode.hdisplay)
return -EINVAL;
if (state->crtc_y + state->crtc_h >
crtc_state->adjusted_mode.vdisplay)
return -EINVAL;
break;
default:
dev_warn(dev, "Unsupported plane type\n");
return -EINVAL;
}
if (state->crtc_h < 2)
return -EINVAL;
/*
* We support resizing active plane or changing its format by
* forcing CRTC mode change and disabling-enabling plane in plane's
* ->atomic_update callback.
*/
if (old_fb && (state->src_w != old_state->src_w ||
state->src_h != old_state->src_h ||
fb->pixel_format != old_fb->pixel_format))
crtc_state->mode_changed = true;
eba = drm_plane_state_to_eba(state);
if (eba & 0x7)
return -EINVAL;
if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
return -EINVAL;
if (old_fb && fb->pitches[0] != old_fb->pitches[0])
crtc_state->mode_changed = true;
switch (fb->pixel_format) {
case DRM_FORMAT_YUV420:
case DRM_FORMAT_YVU420:
/*
* Multiplanar formats have to meet the following restrictions:
* - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
* - EBA, UBO and VBO are a multiple of 8
* - UBO and VBO are unsigned and not larger than 0xfffff8
* - Only EBA may be changed while scanout is active
* - The strides of U and V planes must be identical.
*/
ubo = drm_plane_state_to_ubo(state);
vbo = drm_plane_state_to_vbo(state);
if ((ubo & 0x7) || (vbo & 0x7))
return -EINVAL;
if ((ubo > 0xfffff8) || (vbo > 0xfffff8))
return -EINVAL;
if (old_fb) {
old_ubo = drm_plane_state_to_ubo(old_state);
old_vbo = drm_plane_state_to_vbo(old_state);
if (ubo != old_ubo || vbo != old_vbo)
return -EINVAL;
}
if (fb->pitches[1] != fb->pitches[2])
return -EINVAL;
if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
return -EINVAL;
if (old_fb && old_fb->pitches[1] != fb->pitches[1])
crtc_state->mode_changed = true;
}
return 0;
}
static void ipu_plane_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
ipu_disable_plane(plane);
}
static void ipu_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct ipu_plane *ipu_plane = to_ipu_plane(plane);
struct drm_plane_state *state = plane->state;
enum ipu_color_space ics;
if (old_state->fb) {
struct drm_crtc_state *crtc_state = state->crtc->state;
if (!crtc_state->mode_changed) {
ipu_plane_atomic_set_base(ipu_plane, old_state);
return;
}
ipu_disable_plane(plane);
}
switch (ipu_plane->dp_flow) {
case IPU_DP_FLOW_SYNC_BG:
ipu_dp_setup_channel(ipu_plane->dp,
IPUV3_COLORSPACE_RGB,
IPUV3_COLORSPACE_RGB);
ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
break;
case IPU_DP_FLOW_SYNC_FG:
ics = ipu_drm_fourcc_to_colorspace(state->fb->pixel_format);
ipu_dp_setup_channel(ipu_plane->dp, ics,
IPUV3_COLORSPACE_UNKNOWN);
ipu_dp_set_window_pos(ipu_plane->dp, state->crtc_x,
state->crtc_y);
/* Enable local alpha on partial plane */
switch (state->fb->pixel_format) {
case DRM_FORMAT_ARGB1555:
case DRM_FORMAT_ABGR1555:
case DRM_FORMAT_RGBA5551:
case DRM_FORMAT_BGRA5551:
case DRM_FORMAT_ARGB4444:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_ABGR8888:
case DRM_FORMAT_RGBA8888:
case DRM_FORMAT_BGRA8888:
ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
break;
default:
break;
}
}
ipu_dmfc_config_wait4eot(ipu_plane->dmfc, state->crtc_w);
ipu_cpmem_zero(ipu_plane->ipu_ch);
ipu_cpmem_set_resolution(ipu_plane->ipu_ch, state->src_w >> 16,
state->src_h >> 16);
ipu_cpmem_set_fmt(ipu_plane->ipu_ch, state->fb->pixel_format);
ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
ipu_cpmem_set_stride(ipu_plane->ipu_ch, state->fb->pitches[0]);
ipu_plane_atomic_set_base(ipu_plane, old_state);
ipu_plane_enable(ipu_plane);
}
static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
.atomic_check = ipu_plane_atomic_check,
.atomic_disable = ipu_plane_atomic_disable,
.atomic_update = ipu_plane_atomic_update,
};
struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
int dma, int dp, unsigned int possible_crtcs,
enum drm_plane_type type)
{
struct ipu_plane *ipu_plane;
int ret;
DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
dma, dp, possible_crtcs);
ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
if (!ipu_plane) {
DRM_ERROR("failed to allocate plane\n");
return ERR_PTR(-ENOMEM);
}
ipu_plane->ipu = ipu;
ipu_plane->dma = dma;
ipu_plane->dp_flow = dp;
ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
&ipu_plane_funcs, ipu_plane_formats,
ARRAY_SIZE(ipu_plane_formats), type,
NULL);
if (ret) {
DRM_ERROR("failed to initialize plane\n");
kfree(ipu_plane);
return ERR_PTR(ret);
}
drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);
return ipu_plane;
}