mirror of https://gitee.com/openkylin/linux.git
fbdev: sh_mobile_lcdc: Fix pan offset computation in YUV mode
The chroma plane offset in memory is equal to the luma plane maximum size. Fix offset computations. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Laurent Pinchart
parent
8be7c66995
commit
a4aa25f6e7
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@ -161,7 +161,7 @@ enum sh_mobile_lcdc_overlay_mode {
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* @dma_handle: Frame buffer DMA address
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* @base_addr_y: Overlay base address (RGB or luma component)
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* @base_addr_c: Overlay base address (chroma component)
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* @pan_offset: Current pan offset in bytes
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* @pan_y_offset: Panning linear offset in bytes (luma component)
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* @format: Current pixelf format
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* @xres: Horizontal visible resolution
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* @xres_virtual: Horizontal total resolution
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@ -191,7 +191,7 @@ struct sh_mobile_lcdc_overlay {
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dma_addr_t dma_handle;
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unsigned long base_addr_y;
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unsigned long base_addr_c;
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unsigned long pan_offset;
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unsigned long pan_y_offset;
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const struct sh_mobile_lcdc_format_info *format;
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unsigned int xres;
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@ -873,8 +873,8 @@ static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl)
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}
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ovl->base_addr_y = ovl->dma_handle;
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ovl->base_addr_c = ovl->base_addr_y + ovl->xres
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* ovl->yres_virtual;
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ovl->base_addr_c = ovl->dma_handle
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+ ovl->xres_virtual * ovl->yres_virtual;
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switch (ovl->mode) {
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case LCDC_OVERLAY_BLEND:
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@ -1111,7 +1111,8 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
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continue;
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ch->base_addr_y = ch->dma_handle;
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ch->base_addr_c = ch->base_addr_y + ch->xres * ch->yres_virtual;
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ch->base_addr_c = ch->dma_handle
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+ ch->xres_virtual * ch->yres_virtual;
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ch->line_size = ch->pitch;
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/* Enable MERAM if possible. */
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@ -1505,39 +1506,36 @@ static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
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struct sh_mobile_lcdc_overlay *ovl = info->par;
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unsigned long base_addr_y;
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unsigned long base_addr_c;
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unsigned long pan_offset;
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unsigned long y_offset;
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unsigned long c_offset;
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if (!ovl->format->yuv)
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pan_offset = var->yoffset * ovl->pitch
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+ var->xoffset * (ovl->format->bpp / 8);
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else
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pan_offset = var->yoffset * ovl->pitch + var->xoffset;
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if (!ovl->format->yuv) {
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y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset)
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* ovl->format->bpp / 8;
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c_offset = 0;
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} else {
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unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1;
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unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1;
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if (pan_offset == ovl->pan_offset)
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return 0; /* No change, do nothing */
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y_offset = var->yoffset * ovl->xres_virtual + var->xoffset;
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c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub
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+ var->xoffset * 2 / xsub;
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}
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/* If the Y offset hasn't changed, the C offset hasn't either. There's
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* nothing to do in that case.
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*/
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if (y_offset == ovl->pan_y_offset)
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return 0;
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/* Set the source address for the next refresh */
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base_addr_y = ovl->dma_handle + pan_offset;
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base_addr_y = ovl->dma_handle + y_offset;
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base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual
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+ c_offset;
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ovl->base_addr_y = base_addr_y;
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ovl->base_addr_c = base_addr_y;
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if (ovl->format->yuv) {
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/* Set Y offset */
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c_offset = var->yoffset * ovl->pitch
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* (ovl->format->bpp - 8) / 8;
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base_addr_c = ovl->dma_handle
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+ ovl->xres * ovl->yres_virtual
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+ c_offset;
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/* Set X offset */
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if (ovl->format->fourcc == V4L2_PIX_FMT_NV24)
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base_addr_c += 2 * var->xoffset;
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else
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base_addr_c += var->xoffset;
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ovl->base_addr_c = base_addr_c;
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}
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ovl->base_addr_c = base_addr_c;
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ovl->pan_y_offset = y_offset;
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lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
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@ -1547,8 +1545,6 @@ static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
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lcdc_write(ovl->channel->lcdc, LDBCR,
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LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
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ovl->pan_offset = pan_offset;
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return 0;
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}
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@ -1814,35 +1810,33 @@ static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
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struct sh_mobile_lcdc_chan *ch = info->par;
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struct sh_mobile_lcdc_priv *priv = ch->lcdc;
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unsigned long ldrcntr;
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unsigned long new_pan_offset;
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unsigned long base_addr_y, base_addr_c = 0;
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unsigned long base_addr_y, base_addr_c;
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unsigned long y_offset;
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unsigned long c_offset;
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if (!ch->format->yuv)
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new_pan_offset = var->yoffset * ch->pitch
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+ var->xoffset * (ch->format->bpp / 8);
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else
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new_pan_offset = var->yoffset * ch->pitch + var->xoffset;
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if (!ch->format->yuv) {
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y_offset = (var->yoffset * ch->xres_virtual + var->xoffset)
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* ch->format->bpp / 8;
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c_offset = 0;
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} else {
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unsigned int xsub = ch->format->bpp < 24 ? 2 : 1;
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unsigned int ysub = ch->format->bpp < 16 ? 2 : 1;
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if (new_pan_offset == ch->pan_offset)
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return 0; /* No change, do nothing */
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y_offset = var->yoffset * ch->xres_virtual + var->xoffset;
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c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub
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+ var->xoffset * 2 / xsub;
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}
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ldrcntr = lcdc_read(priv, _LDRCNTR);
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/* If the Y offset hasn't changed, the C offset hasn't either. There's
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* nothing to do in that case.
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*/
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if (y_offset == ch->pan_y_offset)
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return 0;
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/* Set the source address for the next refresh */
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base_addr_y = ch->dma_handle + new_pan_offset;
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if (ch->format->yuv) {
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/* Set y offset */
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c_offset = var->yoffset * ch->pitch
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* (ch->format->bpp - 8) / 8;
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base_addr_c = ch->dma_handle + ch->xres * ch->yres_virtual
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+ c_offset;
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/* Set x offset */
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if (ch->format->fourcc == V4L2_PIX_FMT_NV24)
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base_addr_c += 2 * var->xoffset;
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else
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base_addr_c += var->xoffset;
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}
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base_addr_y = ch->dma_handle + y_offset;
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base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual
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+ c_offset;
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if (ch->cache)
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sh_mobile_meram_cache_update(priv->meram_dev, ch->cache,
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@ -1851,17 +1845,18 @@ static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
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ch->base_addr_y = base_addr_y;
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ch->base_addr_c = base_addr_c;
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ch->pan_y_offset = y_offset;
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lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
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if (ch->format->yuv)
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lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
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ldrcntr = lcdc_read(priv, _LDRCNTR);
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if (lcdc_chan_is_sublcd(ch))
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lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
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else
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lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS);
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ch->pan_offset = new_pan_offset;
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sh_mobile_lcdc_deferred_io_touch(info);
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@ -2734,7 +2729,6 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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}
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init_waitqueue_head(&ch->frame_end_wait);
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init_completion(&ch->vsync_completion);
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ch->pan_offset = 0;
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/* probe the backlight is there is one defined */
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if (ch->cfg->bl_info.max_brightness)
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@ -47,6 +47,7 @@ struct sh_mobile_lcdc_entity {
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/*
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* struct sh_mobile_lcdc_chan - LCDC display channel
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*
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* @pan_y_offset: Panning linear offset in bytes (luma component)
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* @base_addr_y: Frame buffer viewport base address (luma component)
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* @base_addr_c: Frame buffer viewport base address (chroma component)
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* @pitch: Frame buffer line pitch
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@ -68,7 +69,7 @@ struct sh_mobile_lcdc_chan {
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unsigned long fb_size;
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dma_addr_t dma_handle;
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unsigned long pan_offset;
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unsigned long pan_y_offset;
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unsigned long frame_end;
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wait_queue_head_t frame_end_wait;
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