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staging: drm/omap: add rotation properties

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Use tiled buffers for rotated/reflected scanout, with CRTC and plane
properties as the interface for userspace to configure rotation.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Clark 2012-08-15 15:18:01 -05:00 committed by Greg Kroah-Hartman
parent 69af59970b
commit 3c810c613a
8 changed files with 311 additions and 46 deletions
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10
drivers/staging/omapdrm/omap_crtc.c
View File

@ -191,10 +191,18 @@ static int omap_crtc_page_flip_locked(struct drm_crtc *crtc,
return 0;
}
static int omap_crtc_set_property(struct drm_crtc *crtc,
struct drm_property *property, uint64_t val)
{
struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
return omap_plane_set_property(omap_crtc->plane, property, val);
}
static const struct drm_crtc_funcs omap_crtc_funcs = {
.set_config = drm_crtc_helper_set_config,
.destroy = omap_crtc_destroy,
.page_flip = omap_crtc_page_flip_locked,
.set_property = omap_crtc_set_property,
};
static const struct drm_crtc_helper_funcs omap_crtc_helper_funcs = {
@ -231,6 +239,8 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
drm_crtc_init(dev, crtc, &omap_crtc_funcs);
drm_crtc_helper_add(crtc, &omap_crtc_helper_funcs);
omap_plane_install_properties(omap_crtc->plane, &crtc->base);
return crtc;
fail:

45
drivers/staging/omapdrm/omap_dmm_tiler.c
View File

@ -404,8 +404,26 @@ int tiler_release(struct tiler_block *block)
* Utils
*/
/* calculate the tiler space address of a pixel in a view orientation */
static u32 tiler_get_address(u32 orient, enum tiler_fmt fmt, u32 x, u32 y)
/* calculate the tiler space address of a pixel in a view orientation...
* below description copied from the display subsystem section of TRM:
*
* When the TILER is addressed, the bits:
* [28:27] = 0x0 for 8-bit tiled
* 0x1 for 16-bit tiled
* 0x2 for 32-bit tiled
* 0x3 for page mode
* [31:29] = 0x0 for 0-degree view
* 0x1 for 180-degree view + mirroring
* 0x2 for 0-degree view + mirroring
* 0x3 for 180-degree view
* 0x4 for 270-degree view + mirroring
* 0x5 for 270-degree view
* 0x6 for 90-degree view
* 0x7 for 90-degree view + mirroring
* Otherwise the bits indicated the corresponding bit address to access
* the SDRAM.
*/
static u32 tiler_get_address(enum tiler_fmt fmt, u32 orient, u32 x, u32 y)
{
u32 x_bits, y_bits, tmp, x_mask, y_mask, alignment;
@ -417,8 +435,11 @@ static u32 tiler_get_address(u32 orient, enum tiler_fmt fmt, u32 x, u32 y)
x_mask = MASK(x_bits);
y_mask = MASK(y_bits);
if (x < 0 || x > x_mask || y < 0 || y > y_mask)
if (x < 0 || x > x_mask || y < 0 || y > y_mask) {
DBG("invalid coords: %u < 0 || %u > %u || %u < 0 || %u > %u",
x, x, x_mask, y, y, y_mask);
return 0;
}
/* account for mirroring */
if (orient & MASK_X_INVERT)
@ -439,11 +460,22 @@ dma_addr_t tiler_ssptr(struct tiler_block *block)
{
BUG_ON(!validfmt(block->fmt));
return TILVIEW_8BIT + tiler_get_address(0, block->fmt,
return TILVIEW_8BIT + tiler_get_address(block->fmt, 0,
block->area.p0.x * geom[block->fmt].slot_w,
block->area.p0.y * geom[block->fmt].slot_h);
}
dma_addr_t tiler_tsptr(struct tiler_block *block, uint32_t orient,
uint32_t x, uint32_t y)
{
struct tcm_pt *p = &block->area.p0;
BUG_ON(!validfmt(block->fmt));
return tiler_get_address(block->fmt, orient,
(p->x * geom[block->fmt].slot_w) + x,
(p->y * geom[block->fmt].slot_h) + y);
}
void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h)
{
BUG_ON(!validfmt(fmt));
@ -451,10 +483,13 @@ void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h)
*h = round_up(*h, geom[fmt].slot_h);
}
uint32_t tiler_stride(enum tiler_fmt fmt)
uint32_t tiler_stride(enum tiler_fmt fmt, uint32_t orient)
{
BUG_ON(!validfmt(fmt));
if (orient & MASK_XY_FLIP)
return 1 << (CONT_HEIGHT_BITS + geom[fmt].x_shft);
else
return 1 << (CONT_WIDTH_BITS + geom[fmt].y_shft);
}

17
drivers/staging/omapdrm/omap_dmm_tiler.h
View File

@ -54,7 +54,18 @@ struct tiler_block {
#define TILER_WIDTH (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
#define TILER_HEIGHT (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
/* tiler space addressing bitfields */
/*
Table 15-11. Coding and Description of TILER Orientations
S Y X Description Alternate description
0 0 0 0-degree view Natural view
0 0 1 0-degree view with vertical mirror 180-degree view with horizontal mirror
0 1 0 0-degree view with horizontal mirror 180-degree view with vertical mirror
0 1 1 180-degree view
1 0 0 90-degree view with vertical mirror 270-degree view with horizontal mirror
1 0 1 270-degree view
1 1 0 90-degree view
1 1 1 90-degree view with horizontal mirror 270-degree view with vertical mirror
*/
#define MASK_XY_FLIP (1 << 31)
#define MASK_Y_INVERT (1 << 30)
#define MASK_X_INVERT (1 << 29)
@ -90,7 +101,9 @@ int tiler_release(struct tiler_block *block);
/* utilities */
dma_addr_t tiler_ssptr(struct tiler_block *block);
uint32_t tiler_stride(enum tiler_fmt fmt);
dma_addr_t tiler_tsptr(struct tiler_block *block, uint32_t orient,
uint32_t x, uint32_t y);
uint32_t tiler_stride(enum tiler_fmt fmt, uint32_t orient);
size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);

17
drivers/staging/omapdrm/omap_drv.c
View File

@ -649,6 +649,8 @@ static int dev_firstopen(struct drm_device *dev)
*/
static void dev_lastclose(struct drm_device *dev)
{
int i;
/* we don't support vga-switcheroo.. so just make sure the fbdev
* mode is active
*/
@ -657,6 +659,21 @@ static void dev_lastclose(struct drm_device *dev)
DBG("lastclose: dev=%p", dev);
/* need to restore default rotation state.. not sure if there is
* a cleaner way to restore properties to default state? Maybe
* a flag that properties should automatically be restored to
* default state on lastclose?
*/
for (i = 0; i < priv->num_crtcs; i++) {
drm_object_property_set_value(&priv->crtcs[i]->base,
priv->rotation_prop, 0);
}
for (i = 0; i < priv->num_planes; i++) {
drm_object_property_set_value(&priv->planes[i]->base,
priv->rotation_prop, 0);
}
ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev);
if (ret)
DBG("failed to restore crtc mode");

32
drivers/staging/omapdrm/omap_drv.h
View File

@ -59,6 +59,26 @@ struct omap_drm_private {
struct list_head obj_list;
bool has_dmm;
/* properties: */
struct drm_property *rotation_prop;
};
/* this should probably be in drm-core to standardize amongst drivers */
#define DRM_ROTATE_0 0
#define DRM_ROTATE_90 1
#define DRM_ROTATE_180 2
#define DRM_ROTATE_270 3
#define DRM_REFLECT_X 4
#define DRM_REFLECT_Y 5
/* parameters which describe (unrotated) coordinates of scanout within a fb: */
struct omap_drm_window {
uint32_t rotation;
int32_t crtc_x, crtc_y; /* signed because can be offscreen */
uint32_t crtc_w, crtc_h;
uint32_t src_x, src_y;
uint32_t src_w, src_h;
};
#ifdef CONFIG_DEBUG_FS
@ -87,6 +107,10 @@ int omap_plane_mode_set(struct drm_plane *plane,
uint32_t src_w, uint32_t src_h);
void omap_plane_on_endwin(struct drm_plane *plane,
void (*fxn)(void *), void *arg);
void omap_plane_install_properties(struct drm_plane *plane,
struct drm_mode_object *obj);
int omap_plane_set_property(struct drm_plane *plane,
struct drm_property *property, uint64_t val);
struct drm_encoder *omap_encoder_init(struct drm_device *dev,
struct omap_overlay_manager *mgr);
@ -114,8 +138,8 @@ struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p);
int omap_framebuffer_replace(struct drm_framebuffer *a,
struct drm_framebuffer *b, void *arg,
void (*unpin)(void *arg, struct drm_gem_object *bo));
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, int x, int y,
struct omap_overlay_info *info);
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
struct omap_drm_window *win, struct omap_overlay_info *info);
struct drm_connector *omap_framebuffer_get_next_connector(
struct drm_framebuffer *fb, struct drm_connector *from);
void omap_framebuffer_flush(struct drm_framebuffer *fb,
@ -157,8 +181,12 @@ int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
bool remap);
int omap_gem_put_pages(struct drm_gem_object *obj);
uint32_t omap_gem_flags(struct drm_gem_object *obj);
int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
int x, int y, dma_addr_t *paddr);
uint64_t omap_gem_mmap_offset(struct drm_gem_object *obj);
size_t omap_gem_mmap_size(struct drm_gem_object *obj);
int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h);
int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient);
struct dma_buf * omap_gem_prime_export(struct drm_device *dev,
struct drm_gem_object *obj, int flags);

99
drivers/staging/omapdrm/omap_fb.c
View File

@ -18,6 +18,7 @@
*/
#include "omap_drv.h"
#include "omap_dmm_tiler.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
@ -137,30 +138,100 @@ static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
.dirty = omap_framebuffer_dirty,
};
static uint32_t get_linear_addr(struct plane *plane,
const struct format *format, int n, int x, int y)
{
uint32_t offset;
offset = plane->offset +
(x * format->planes[n].stride_bpp) +
(y * plane->pitch / format->planes[n].sub_y);
return plane->paddr + offset;
}
/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
*/
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, int x, int y,
struct omap_overlay_info *info)
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
struct omap_drm_window *win, struct omap_overlay_info *info)
{
struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
const struct format *format = omap_fb->format;
struct plane *plane = &omap_fb->planes[0];
unsigned int offset;
offset = plane->offset +
(x * format->planes[0].stride_bpp) +
(y * plane->pitch / format->planes[0].sub_y);
uint32_t x, y, orient = 0;
info->color_mode = format->dss_format;
info->paddr = plane->paddr + offset;
info->screen_width = plane->pitch / format->planes[0].stride_bpp;
info->pos_x = win->crtc_x;
info->pos_y = win->crtc_y;
info->out_width = win->crtc_w;
info->out_height = win->crtc_h;
info->width = win->src_w;
info->height = win->src_h;
x = win->src_x;
y = win->src_y;
if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
uint32_t w = win->src_w;
uint32_t h = win->src_h;
switch (win->rotation & 0xf) {
default:
dev_err(fb->dev->dev, "invalid rotation: %02x",
(uint32_t)win->rotation);
/* fallthru to default to no rotation */
case 0:
case BIT(DRM_ROTATE_0):
orient = 0;
break;
case BIT(DRM_ROTATE_90):
orient = MASK_XY_FLIP | MASK_X_INVERT;
break;
case BIT(DRM_ROTATE_180):
orient = MASK_X_INVERT | MASK_Y_INVERT;
break;
case BIT(DRM_ROTATE_270):
orient = MASK_XY_FLIP | MASK_Y_INVERT;
break;
}
if (win->rotation & BIT(DRM_REFLECT_X))
orient ^= MASK_X_INVERT;
if (win->rotation & BIT(DRM_REFLECT_Y))
orient ^= MASK_Y_INVERT;
/* adjust x,y offset for flip/invert: */
if (orient & MASK_XY_FLIP)
swap(w, h);
if (orient & MASK_Y_INVERT)
y += h - 1;
if (orient & MASK_X_INVERT)
x += w - 1;
omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
info->rotation_type = OMAP_DSS_ROT_TILER;
info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
} else {
info->paddr = get_linear_addr(plane, format, 0, x, y);
info->rotation_type = OMAP_DSS_ROT_DMA;
info->screen_width = plane->pitch;
}
/* convert to pixels: */
info->screen_width /= format->planes[0].stride_bpp;
if (format->dss_format == OMAP_DSS_COLOR_NV12) {
plane = &omap_fb->planes[1];
offset = plane->offset +
(x * format->planes[1].stride_bpp) +
(y * plane->pitch / format->planes[1].sub_y);
info->p_uv_addr = plane->paddr + offset;
if (info->rotation_type == OMAP_DSS_ROT_TILER) {
WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
omap_gem_rotated_paddr(plane->bo, orient,
x/2, y/2, &info->p_uv_addr);
} else {
info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
}
} else {
info->p_uv_addr = 0;
}
@ -377,7 +448,7 @@ struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
size = pitch * mode_cmd->height / format->planes[i].sub_y;
if (size > (bos[i]->size - mode_cmd->offsets[i])) {
if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
bos[i]->size - mode_cmd->offsets[i], size);
ret = -EINVAL;

43
drivers/staging/omapdrm/omap_gem.c
View File

@ -339,6 +339,17 @@ size_t omap_gem_mmap_size(struct drm_gem_object *obj)
return size;
}
/* get tiled size, returns -EINVAL if not tiled buffer */
int omap_gem_tiled_size(struct drm_gem_object *obj, uint16_t *w, uint16_t *h)
{
struct omap_gem_object *omap_obj = to_omap_bo(obj);
if (omap_obj->flags & OMAP_BO_TILED) {
*w = omap_obj->width;
*h = omap_obj->height;
return 0;
}
return -EINVAL;
}
/* Normal handling for the case of faulting in non-tiled buffers */
static int fault_1d(struct drm_gem_object *obj,
@ -832,6 +843,36 @@ fail:
return ret;
}
/* Get rotated scanout address (only valid if already pinned), at the
* specified orientation and x,y offset from top-left corner of buffer
* (only valid for tiled 2d buffers)
*/
int omap_gem_rotated_paddr(struct drm_gem_object *obj, uint32_t orient,
int x, int y, dma_addr_t *paddr)
{
struct omap_gem_object *omap_obj = to_omap_bo(obj);
int ret = -EINVAL;
mutex_lock(&obj->dev->struct_mutex);
if ((omap_obj->paddr_cnt > 0) && omap_obj->block &&
(omap_obj->flags & OMAP_BO_TILED)) {
*paddr = tiler_tsptr(omap_obj->block, orient, x, y);
ret = 0;
}
mutex_unlock(&obj->dev->struct_mutex);
return ret;
}
/* Get tiler stride for the buffer (only valid for 2d tiled buffers) */
int omap_gem_tiled_stride(struct drm_gem_object *obj, uint32_t orient)
{
struct omap_gem_object *omap_obj = to_omap_bo(obj);
int ret = -EINVAL;
if (omap_obj->flags & OMAP_BO_TILED)
ret = tiler_stride(gem2fmt(omap_obj->flags), orient);
return ret;
}
/* acquire pages when needed (for example, for DMA where physically
* contiguous buffer is not required
*/
@ -1402,7 +1443,7 @@ void omap_gem_init(struct drm_device *dev)
*/
usergart[i].height = h;
usergart[i].height_shift = ilog2(h);
usergart[i].stride_pfn = tiler_stride(fmts[i]) >> PAGE_SHIFT;
usergart[i].stride_pfn = tiler_stride(fmts[i], 0) >> PAGE_SHIFT;
usergart[i].slot_shift = ilog2((PAGE_SIZE / h) >> i);
for (j = 0; j < NUM_USERGART_ENTRIES; j++) {
struct usergart_entry *entry = &usergart[i].entry[j];

92
drivers/staging/omapdrm/omap_plane.c
View File

@ -20,6 +20,7 @@
#include <linux/kfifo.h>
#include "omap_drv.h"
#include "omap_dmm_tiler.h"
/* some hackery because omapdss has an 'enum omap_plane' (which would be
* better named omap_plane_id).. and compiler seems unhappy about having
@ -43,10 +44,9 @@ struct omap_plane {
struct omap_overlay *ovl;
struct omap_overlay_info info;
/* Source values, converted to integers because we don't support
* fractional positions:
*/
unsigned int src_x, src_y;
/* position/orientation of scanout within the fb: */
struct omap_drm_window win;
/* last fb that we pinned: */
struct drm_framebuffer *pinned_fb;
@ -289,6 +289,7 @@ static void update_scanout(struct drm_plane *plane)
{
struct omap_plane *omap_plane = to_omap_plane(plane);
struct omap_overlay_info *info = &omap_plane->info;
struct omap_drm_window *win = &omap_plane->win;
int ret;
ret = update_pin(plane, plane->fb);
@ -299,11 +300,10 @@ static void update_scanout(struct drm_plane *plane)
return;
}
omap_framebuffer_update_scanout(plane->fb,
omap_plane->src_x, omap_plane->src_y, info);
omap_framebuffer_update_scanout(plane->fb, win, info);
DBG("%s: %d,%d: %08x %08x (%d)", omap_plane->ovl->name,
omap_plane->src_x, omap_plane->src_y,
win->src_x, win->src_y,
(u32)info->paddr, (u32)info->p_uv_addr,
info->screen_width);
}
@ -316,21 +316,18 @@ int omap_plane_mode_set(struct drm_plane *plane,
uint32_t src_w, uint32_t src_h)
{
struct omap_plane *omap_plane = to_omap_plane(plane);
struct omap_drm_window *win = &omap_plane->win;
win->crtc_x = crtc_x;
win->crtc_y = crtc_y;
win->crtc_w = crtc_w;
win->crtc_h = crtc_h;
/* src values are in Q16 fixed point, convert to integer: */
src_x = src_x >> 16;
src_y = src_y >> 16;
src_w = src_w >> 16;
src_h = src_h >> 16;
omap_plane->info.pos_x = crtc_x;
omap_plane->info.pos_y = crtc_y;
omap_plane->info.out_width = crtc_w;
omap_plane->info.out_height = crtc_h;
omap_plane->info.width = src_w;
omap_plane->info.height = src_h;
omap_plane->src_x = src_x;
omap_plane->src_y = src_y;
win->src_x = src_x >> 16;
win->src_y = src_y >> 16;
win->src_w = src_w >> 16;
win->src_h = src_h >> 16;
/* note: this is done after this fxn returns.. but if we need
* to do a commit/update_scanout, etc before this returns we
@ -359,6 +356,8 @@ static int omap_plane_update(struct drm_plane *plane,
static int omap_plane_disable(struct drm_plane *plane)
{
struct omap_plane *omap_plane = to_omap_plane(plane);
omap_plane->win.rotation = BIT(DRM_ROTATE_0);
return omap_plane_dpms(plane, DRM_MODE_DPMS_OFF);
}
@ -409,10 +408,60 @@ void omap_plane_on_endwin(struct drm_plane *plane,
install_irq(plane);
}
/* helper to install properties which are common to planes and crtcs */
void omap_plane_install_properties(struct drm_plane *plane,
struct drm_mode_object *obj)
{
struct drm_device *dev = plane->dev;
struct omap_drm_private *priv = dev->dev_private;
struct drm_property *prop;
prop = priv->rotation_prop;
if (!prop) {
const struct drm_prop_enum_list props[] = {
{ DRM_ROTATE_0, "rotate-0" },
{ DRM_ROTATE_90, "rotate-90" },
{ DRM_ROTATE_180, "rotate-180" },
{ DRM_ROTATE_270, "rotate-270" },
{ DRM_REFLECT_X, "reflect-x" },
{ DRM_REFLECT_Y, "reflect-y" },
};
prop = drm_property_create_bitmask(dev, 0, "rotation",
props, ARRAY_SIZE(props));
if (prop == NULL)
return;
priv->rotation_prop = prop;
}
drm_object_attach_property(obj, prop, 0);
}
int omap_plane_set_property(struct drm_plane *plane,
struct drm_property *property, uint64_t val)
{
struct omap_plane *omap_plane = to_omap_plane(plane);
struct omap_drm_private *priv = plane->dev->dev_private;
int ret = -EINVAL;
if (property == priv->rotation_prop) {
struct omap_overlay *ovl = omap_plane->ovl;
DBG("%s: rotation: %02x", ovl->name, (uint32_t)val);
omap_plane->win.rotation = val;
if (ovl->is_enabled(ovl))
ret = omap_plane_dpms(plane, DRM_MODE_DPMS_ON);
else
ret = 0;
}
return ret;
}
static const struct drm_plane_funcs omap_plane_funcs = {
.update_plane = omap_plane_update,
.disable_plane = omap_plane_disable,
.destroy = omap_plane_destroy,
.set_property = omap_plane_set_property,
};
/* initialize plane */
@ -455,6 +504,8 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
drm_plane_init(dev, plane, possible_crtcs, &omap_plane_funcs,
omap_plane->formats, omap_plane->nformats, priv);
omap_plane_install_properties(plane, &plane->base);
/* get our starting configuration, set defaults for parameters
* we don't currently use, etc:
*/
@ -463,7 +514,6 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
omap_plane->info.rotation = OMAP_DSS_ROT_0;
omap_plane->info.global_alpha = 0xff;
omap_plane->info.mirror = 0;
omap_plane->info.mirror = 0;
/* Set defaults depending on whether we are a CRTC or overlay
* layer.