@@ -161,7 +161,7 @@ enum sh_mobile_lcdc_overlay_mode {
* @dma_handle: Frame buffer DMA address
* @base_addr_y: Overlay base address (RGB or luma component)
* @base_addr_c: Overlay base address (chroma component)
- * @pan_offset: Current pan offset in bytes
+ * @pan_y_offset: Panning linear offset in bytes (luma component)
* @format: Current pixelf format
* @xres: Horizontal visible resolution
* @xres_virtual: Horizontal total resolution
@@ -191,7 +191,7 @@ struct sh_mobile_lcdc_overlay {
dma_addr_t dma_handle;
unsigned long base_addr_y;
unsigned long base_addr_c;
- unsigned long pan_offset;
+ unsigned long pan_y_offset;
const struct sh_mobile_lcdc_format_info *format;
unsigned int xres;
@@ -873,8 +873,8 @@ static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl)
}
ovl->base_addr_y = ovl->dma_handle;
- ovl->base_addr_c = ovl->base_addr_y + ovl->xres
- * ovl->yres_virtual;
+ ovl->base_addr_c = ovl->dma_handle
+ + ovl->xres_virtual * ovl->yres_virtual;
switch (ovl->mode) {
case LCDC_OVERLAY_BLEND:
@@ -1111,7 +1111,8 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
continue;
ch->base_addr_y = ch->dma_handle;
- ch->base_addr_c = ch->base_addr_y + ch->xres * ch->yres_virtual;
+ ch->base_addr_c = ch->dma_handle
+ + ch->xres_virtual * ch->yres_virtual;
ch->line_size = ch->pitch;
/* Enable MERAM if possible. */
@@ -1505,39 +1506,36 @@ static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
struct sh_mobile_lcdc_overlay *ovl = info->par;
unsigned long base_addr_y;
unsigned long base_addr_c;
- unsigned long pan_offset;
+ unsigned long y_offset;
unsigned long c_offset;
- if (!ovl->format->yuv)
- pan_offset = var->yoffset * ovl->pitch
- + var->xoffset * (ovl->format->bpp / 8);
- else
- pan_offset = var->yoffset * ovl->pitch + var->xoffset;
+ if (!ovl->format->yuv) {
+ y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset)
+ * ovl->format->bpp / 8;
+ c_offset = 0;
+ } else {
+ unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1;
+ unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1;
+
+ y_offset = var->yoffset * ovl->xres_virtual + var->xoffset;
+ c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub
+ + var->xoffset * 2 / xsub;
+ }
- if (pan_offset == ovl->pan_offset)
- return 0; /* No change, do nothing */
+ /* If the Y offset hasn't changed, the C offset hasn't either. There's
+ * nothing to do in that case.
+ */
+ if (y_offset == ovl->pan_y_offset)
+ return 0;
/* Set the source address for the next refresh */
- base_addr_y = ovl->dma_handle + pan_offset;
+ base_addr_y = ovl->dma_handle + y_offset;
+ base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual
+ + c_offset;
ovl->base_addr_y = base_addr_y;
- ovl->base_addr_c = base_addr_y;
-
- if (ovl->format->yuv) {
- /* Set Y offset */
- c_offset = var->yoffset * ovl->pitch
- * (ovl->format->bpp - 8) / 8;
- base_addr_c = ovl->dma_handle
- + ovl->xres * ovl->yres_virtual
- + c_offset;
- /* Set X offset */
- if (ovl->format->fourcc == V4L2_PIX_FMT_NV24)
- base_addr_c += 2 * var->xoffset;
- else
- base_addr_c += var->xoffset;
-
- ovl->base_addr_c = base_addr_c;
- }
+ ovl->base_addr_c = base_addr_c;
+ ovl->pan_y_offset = y_offset;
lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
@@ -1547,8 +1545,6 @@ static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
lcdc_write(ovl->channel->lcdc, LDBCR,
LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
- ovl->pan_offset = pan_offset;
-
return 0;
}
@@ -1814,35 +1810,33 @@ static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
struct sh_mobile_lcdc_chan *ch = info->par;
struct sh_mobile_lcdc_priv *priv = ch->lcdc;
unsigned long ldrcntr;
- unsigned long new_pan_offset;
- unsigned long base_addr_y, base_addr_c = 0;
+ unsigned long base_addr_y, base_addr_c;
+ unsigned long y_offset;
unsigned long c_offset;
- if (!ch->format->yuv)
- new_pan_offset = var->yoffset * ch->pitch
- + var->xoffset * (ch->format->bpp / 8);
- else
- new_pan_offset = var->yoffset * ch->pitch + var->xoffset;
+ if (!ch->format->yuv) {
+ y_offset = (var->yoffset * ch->xres_virtual + var->xoffset)
+ * ch->format->bpp / 8;
+ c_offset = 0;
+ } else {
+ unsigned int xsub = ch->format->bpp < 24 ? 2 : 1;
+ unsigned int ysub = ch->format->bpp < 16 ? 2 : 1;
- if (new_pan_offset == ch->pan_offset)
- return 0; /* No change, do nothing */
+ y_offset = var->yoffset * ch->xres_virtual + var->xoffset;
+ c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub
+ + var->xoffset * 2 / xsub;
+ }
- ldrcntr = lcdc_read(priv, _LDRCNTR);
+ /* If the Y offset hasn't changed, the C offset hasn't either. There's
+ * nothing to do in that case.
+ */
+ if (y_offset == ch->pan_y_offset)
+ return 0;
/* Set the source address for the next refresh */
- base_addr_y = ch->dma_handle + new_pan_offset;
- if (ch->format->yuv) {
- /* Set y offset */
- c_offset = var->yoffset * ch->pitch
- * (ch->format->bpp - 8) / 8;
- base_addr_c = ch->dma_handle + ch->xres * ch->yres_virtual
- + c_offset;
- /* Set x offset */
- if (ch->format->fourcc == V4L2_PIX_FMT_NV24)
- base_addr_c += 2 * var->xoffset;
- else
- base_addr_c += var->xoffset;
- }
+ base_addr_y = ch->dma_handle + y_offset;
+ base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual
+ + c_offset;
if (ch->cache)
sh_mobile_meram_cache_update(priv->meram_dev, ch->cache,
@@ -1851,17 +1845,18 @@ static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
ch->base_addr_y = base_addr_y;
ch->base_addr_c = base_addr_c;
+ ch->pan_y_offset = y_offset;
lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
if (ch->format->yuv)
lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
+ ldrcntr = lcdc_read(priv, _LDRCNTR);
if (lcdc_chan_is_sublcd(ch))
lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
else
lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS);
- ch->pan_offset = new_pan_offset;
sh_mobile_lcdc_deferred_io_touch(info);
@@ -2734,7 +2729,6 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
}
init_waitqueue_head(&ch->frame_end_wait);
init_completion(&ch->vsync_completion);
- ch->pan_offset = 0;
/* probe the backlight is there is one defined */
if (ch->cfg->bl_info.max_brightness)
@@ -47,6 +47,7 @@ struct sh_mobile_lcdc_entity {
/*
* struct sh_mobile_lcdc_chan - LCDC display channel
*
+ * @pan_y_offset: Panning linear offset in bytes (luma component)
* @base_addr_y: Frame buffer viewport base address (luma component)
* @base_addr_c: Frame buffer viewport base address (chroma component)
* @pitch: Frame buffer line pitch
@@ -68,7 +69,7 @@ struct sh_mobile_lcdc_chan {
unsigned long fb_size;
dma_addr_t dma_handle;
- unsigned long pan_offset;
+ unsigned long pan_y_offset;
unsigned long frame_end;
wait_queue_head_t frame_end_wait;
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> --- drivers/video/sh_mobile_lcdcfb.c | 110 ++++++++++++++++++-------------------- drivers/video/sh_mobile_lcdcfb.h | 3 +- 2 files changed, 54 insertions(+), 59 deletions(-)