#include "psb_drv.h"
#include "psb_fb.h"
+/**
+ * psb_spank - reset the 2D engine
+ * @dev_priv: our PSB DRM device
+ *
+ * Soft reset the graphics engine and then reload the necessary registers.
+ * We use this at initialisation time but it will become relevant for
+ * accelerated X later
+ */
void psb_spank(struct drm_psb_private *dev_priv)
{
PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET |
PSB_WSGX32(dev_priv->pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
}
+/**
+ * psb2_2d_wait_available - wait for FIFO room
+ * @dev_priv: our DRM device
+ * @size: size (in dwords) of the command we want to issue
+ *
+ * Wait until there is room to load the FIFO with our data. If the
+ * device is not responding then reset it
+ */
static int psb_2d_wait_available(struct drm_psb_private *dev_priv,
unsigned size)
{
return 0;
}
-/* FIXME: Remember if we expose the 2D engine to the DRM we need to serialize
- it with console use */
-
+/**
+ * psb_2d_submit - submit a 2D command
+ * @dev_priv: our DRM device
+ * @cmdbuf: command to issue
+ * @size: length (in dwords)
+ *
+ * Issue one or more 2D commands to the accelerator. This needs to be
+ * serialized later when we add the GEM interfaces for acceleration
+ */
int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
unsigned size)
{
return 0;
}
-static int psb_accel_2d_fillrect(struct drm_psb_private *dev_priv,
- uint32_t dst_offset, uint32_t dst_stride,
- uint32_t dst_format, uint16_t dst_x,
- uint16_t dst_y, uint16_t size_x,
- uint16_t size_y, uint32_t fill)
-{
- uint32_t buffer[10];
- uint32_t *buf;
-
- buf = buffer;
-
- *buf++ = PSB_2D_FENCE_BH;
-
- *buf++ =
- PSB_2D_DST_SURF_BH | dst_format | (dst_stride <<
- PSB_2D_DST_STRIDE_SHIFT);
- *buf++ = dst_offset;
-
- *buf++ =
- PSB_2D_BLIT_BH |
- PSB_2D_ROT_NONE |
- PSB_2D_COPYORDER_TL2BR |
- PSB_2D_DSTCK_DISABLE |
- PSB_2D_SRCCK_DISABLE | PSB_2D_USE_FILL | PSB_2D_ROP3_PATCOPY;
-
- *buf++ = fill << PSB_2D_FILLCOLOUR_SHIFT;
- *buf++ =
- (dst_x << PSB_2D_DST_XSTART_SHIFT) | (dst_y <<
- PSB_2D_DST_YSTART_SHIFT);
- *buf++ =
- (size_x << PSB_2D_DST_XSIZE_SHIFT) | (size_y <<
- PSB_2D_DST_YSIZE_SHIFT);
- *buf++ = PSB_2D_FLUSH_BH;
-
- return psbfb_2d_submit(dev_priv, buffer, buf - buffer);
-}
-
-static void psbfb_fillrect_accel(struct fb_info *info,
- const struct fb_fillrect *r)
-{
- struct psb_fbdev *fbdev = info->par;
- struct psb_framebuffer *psbfb = &fbdev->pfb;
- struct drm_device *dev = psbfb->base.dev;
- struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
- struct drm_psb_private *dev_priv = dev->dev_private;
-
- uint32_t offset;
- uint32_t stride;
- uint32_t format;
-
- if (!fb)
- return;
-
- offset = psbfb->gtt->offset;
- stride = fb->pitch;
-
- switch (fb->depth) {
- case 8:
- format = PSB_2D_DST_332RGB;
- break;
- case 15:
- format = PSB_2D_DST_555RGB;
- break;
- case 16:
- format = PSB_2D_DST_565RGB;
- break;
- case 24:
- case 32:
- /* this is wrong but since we don't do blending its okay */
- format = PSB_2D_DST_8888ARGB;
- break;
- default:
- /* software fallback */
- cfb_fillrect(info, r);
- return;
- }
- if (!gma_power_begin(dev, false)) {
- cfb_fillrect(info, r);
- return;
- }
- psb_accel_2d_fillrect(dev_priv,
- offset, stride, format,
- r->dx, r->dy, r->width, r->height, r->color);
- gma_power_end(dev);
-}
-
-void psbfb_fillrect(struct fb_info *info,
- const struct fb_fillrect *rect)
-{
- if (unlikely(info->state != FBINFO_STATE_RUNNING))
- return;
-
- if (1 || (info->flags & FBINFO_HWACCEL_DISABLED))
- return cfb_fillrect(info, rect);
-
- psbfb_fillrect_accel(info, rect);
-}
+/**
+ * psb_accel_2d_copy_direction - compute blit order
+ * @xdir: X direction of move
+ * @ydir: Y direction of move
+ *
+ * Compute the correct order setings to ensure that an overlapping blit
+ * correctly copies all the pixels.
+ */
static u32 psb_accel_2d_copy_direction(int xdir, int ydir)
{
if (xdir < 0)
PSB_2D_COPYORDER_TL2BR;
}
-/*
- * @src_offset in bytes
- * @src_stride in bytes
- * @src_format psb 2D format defines
- * @dst_offset in bytes
- * @dst_stride in bytes
- * @dst_format psb 2D format defines
- * @src_x offset in pixels
- * @src_y offset in pixels
- * @dst_x offset in pixels
- * @dst_y offset in pixels
- * @size_x of the copied area
- * @size_y of the copied area
+/**
+ * psb_accel_2d_copy - accelerated 2D copy
+ * @dev_priv: our DRM device
+ * @src_offset in bytes
+ * @src_stride in bytes
+ * @src_format psb 2D format defines
+ * @dst_offset in bytes
+ * @dst_stride in bytes
+ * @dst_format psb 2D format defines
+ * @src_x offset in pixels
+ * @src_y offset in pixels
+ * @dst_x offset in pixels
+ * @dst_y offset in pixels
+ * @size_x of the copied area
+ * @size_y of the copied area
+ *
+ * Format and issue a 2D accelerated copy command.
*/
static int psb_accel_2d_copy(struct drm_psb_private *dev_priv,
uint32_t src_offset, uint32_t src_stride,
return psbfb_2d_submit(dev_priv, buffer, buf - buffer);
}
+/**
+ * psbfb_copyarea_accel - copyarea acceleration for /dev/fb
+ * @info: our framebuffer
+ * @a: copyarea parameters from the framebuffer core
+ *
+ * Perform a 2D copy via the accelerator
+ */
static void psbfb_copyarea_accel(struct fb_info *info,
const struct fb_copyarea *a)
{
gma_power_end(dev);
}
+/**
+ * psbfb_copyarea - 2D copy interface
+ * @info: our framebuffer
+ * @region: region to copy
+ *
+ * Copy an area of the framebuffer console either by the accelerator
+ * or directly using the cfb helpers according to the request
+ */
void psbfb_copyarea(struct fb_info *info,
const struct fb_copyarea *region)
{
psbfb_copyarea_accel(info, region);
}
-void psbfb_imageblit(struct fb_info *info, const struct fb_image *image)
-{
- /* For now */
- cfb_imageblit(info, image);
-}
-
+/**
+ * psbfb_sync - synchronize 2D
+ * @info: our framebuffer
+ *
+ * Wait for the 2D engine to quiesce so that we can do CPU
+ * access to the framebuffer again
+ */
int psbfb_sync(struct fb_info *info)
{
struct psb_fbdev *fbdev = info->par;
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff