On Wed, Jun 23, 2010 at 07:18:00AM +0200, ext Nagarajan, Rajkumar wrote:
>
> DISPC DMA optimization has been enabled and vrfb calls changed as required.
> Optimization reduces the memory traffic (DDR memory) when rotation is set
> to 90- and 270- degree and SMS-VRFB rotation engine is used.
>
> With this change,
> L3 interconnect traffic is reduced by a factor 2x for YUV422 & UYVY
> DDR memory traffic is reduced by a factor 2x for YUV422 & UYVY.
>
> Signed-off-by: Mukund Mittal <mmittal@xxxxxx>
> Signed-off-by: Kishore Y <kishore.y@xxxxxx>
> Signed-off-by: Rajkumar N <rajkumar.nagarajan@xxxxxx>
> ---
> arch/arm/plat-omap/include/plat/vrfb.h | 6 +++-
> drivers/media/video/omap/omap_vout.c | 2 +-
> drivers/video/omap2/dss/dispc.c | 39 +++++++++++++++++++++++-------
> drivers/video/omap2/omapfb/omapfb-main.c | 2 +-
> drivers/video/omap2/vrfb.c | 18 ++++++++++---
> 5 files changed, 50 insertions(+), 17 deletions(-)
>
> diff --git a/arch/arm/plat-omap/include/plat/vrfb.h b/arch/arm/plat-omap/include/plat/vrfb.h
> index d8a03ce..fba9ecd 100644
> --- a/arch/arm/plat-omap/include/plat/vrfb.h
> +++ b/arch/arm/plat-omap/include/plat/vrfb.h
> @@ -23,6 +23,8 @@
>
> #define OMAP_VRFB_LINE_LEN 2048
>
> +#include <plat/display.h>
> +
> struct vrfb {
> u8 context;
> void __iomem *vaddr[4];
> @@ -42,8 +44,8 @@ extern void omap_vrfb_adjust_size(u16 *width, u16 *height,
> extern u32 omap_vrfb_min_phys_size(u16 width, u16 height, u8 bytespp);
> extern u16 omap_vrfb_max_height(u32 phys_size, u16 width, u8 bytespp);
> extern void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
> - u16 width, u16 height,
> - unsigned bytespp, bool yuv_mode);
> + u16 width, u16 height, unsigned bytespp,
> + enum omap_color_mode color_mode, int rotation);
> extern int omap_vrfb_map_angle(struct vrfb *vrfb, u16 height, u8 rot);
> extern void omap_vrfb_restore_context(void);
>
> diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c
> index b74884b..b3f94ca 100644
> --- a/drivers/media/video/omap/omap_vout.c
> +++ b/drivers/media/video/omap/omap_vout.c
> @@ -465,7 +465,7 @@ static int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout,
> for (i = 0; i < *count; i++)
> omap_vrfb_setup(&vout->vrfb_context[i],
> vout->smsshado_phy_addr[i], vout->pix.width,
> - vout->pix.height, vout->bpp, yuv_mode);
> + vout->pix.height, vout->bpp, vout->dss_mode, vout->rotation);
>
> return 0;
> }
> diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
> index e777e35..cb8eba4 100644
> --- a/drivers/video/omap2/dss/dispc.c
> +++ b/drivers/video/omap2/dss/dispc.c
> @@ -1059,12 +1059,16 @@ static void _dispc_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
> dispc_write_reg(ac1_reg[plane-1], val);
> }
>
> +static void _dispc_set_vdma_attrs(enum omap_plane plane, bool enable)
> +{
> + REG_FLD_MOD(dispc_reg_att[plane], enable ? 1 : 0, 20, 20);
> +}
>
> static void _dispc_set_scaling(enum omap_plane plane,
> u16 orig_width, u16 orig_height,
> u16 out_width, u16 out_height,
> bool ilace, bool five_taps,
> - bool fieldmode)
> + bool fieldmode, bool vdma)
> {
> int fir_hinc;
> int fir_vinc;
> @@ -1080,12 +1084,12 @@ static void _dispc_set_scaling(enum omap_plane plane,
>
> _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps);
>
> - if (!orig_width || orig_width == out_width)
> + if (!orig_width || (!vdma && (orig_width == out_width)))
> fir_hinc = 0;
> else
> fir_hinc = 1024 * orig_width / out_width;
>
> - if (!orig_height || orig_height == out_height)
> + if (!orig_height || (!vdma && (orig_height == out_height)))
> fir_vinc = 0;
> else
> fir_vinc = 1024 * orig_height / out_height;
> @@ -1164,10 +1168,6 @@ static void _dispc_set_rotation_attrs(enum omap_plane plane, u8 rotation,
>
> REG_FLD_MOD(dispc_reg_att[plane], vidrot, 13, 12);
>
> - if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
> - REG_FLD_MOD(dispc_reg_att[plane], 0x1, 18, 18);
> - else
> - REG_FLD_MOD(dispc_reg_att[plane], 0x0, 18, 18);
So VIDROWREPEAT is supposed to be off when vid DMA optimization is on?
There's no mention of that in the TRM.
> } else {
> REG_FLD_MOD(dispc_reg_att[plane], 0, 13, 12);
> REG_FLD_MOD(dispc_reg_att[plane], 0, 18, 18);
> @@ -1504,6 +1504,17 @@ static unsigned long calc_fclk(u16 width, u16 height,
> return dispc_pclk_rate() * vf * hf;
> }
>
> +static int dispc_is_vdma_req(u8 rotation, enum omap_color_mode color_mode)
> +{
> +/* TODO: VDMA support for RGB16 mode */
> + if (cpu_is_omap3630())
Is video DMA optimization broken on 34xx? I tried to enable it on a 3430
at some point but didn't see any obvious improvement. However the 34xx
TRM didn't say anything about 5-tap so perhaps it just didn't actually
do anything.
> + if ((color_mode == OMAP_DSS_COLOR_YUV2) ||
> + (color_mode == OMAP_DSS_COLOR_UYVY))
> + if ((rotation == 1) || (rotation == 3))
> + return true;
> + return false;
> +}
> +
> void dispc_set_channel_out(enum omap_plane plane, enum omap_channel channel_out)
> {
> enable_clocks(1);
> @@ -1623,6 +1634,8 @@ static int _dispc_setup_plane(enum omap_plane plane,
> if (cpu_is_omap34xx() && height > out_height &&
> fclk > dispc_fclk_rate())
> five_taps = true;
> + if (dispc_is_vdma_req(rotation, color_mode))
> + five_taps = true;
Maybe it would make sense to change the code back to trying 5-tap first
and fall back to 3-tap if the required clock is too high?
> }
>
> if (width > (2048 >> five_taps)) {
> @@ -1694,9 +1707,17 @@ static int _dispc_setup_plane(enum omap_plane plane,
> _dispc_set_pic_size(plane, width, height);
>
> if (plane != OMAP_DSS_GFX) {
> - _dispc_set_scaling(plane, width, height,
> + if (dispc_is_vdma_req(rotation, color_mode)) {
> + _dispc_set_scaling(plane, width, height,
> out_width, out_height,
> - ilace, five_taps, fieldmode);
> + ilace, five_taps, fieldmode, 1);
> + _dispc_set_vdma_attrs(plane, 1);
> + } else {
> + _dispc_set_scaling(plane, width, height,
> + out_width, out_height,
> + ilace, five_taps, fieldmode, 0);
> + _dispc_set_vdma_attrs(plane, 0);
> + }
Less copy-pasting:
bool vdma = dispc_is_vdma_req();
_dispc_set_scaling(..., vdma);
_dispc_set_vdma_attrs(..., vdma);
> _dispc_set_vid_size(plane, out_width, out_height);
> _dispc_set_vid_color_conv(plane, cconv);
> }
> diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
> index 73ecc9f..33fd427 100644
> --- a/drivers/video/omap2/omapfb/omapfb-main.c
> +++ b/drivers/video/omap2/omapfb/omapfb-main.c
> @@ -552,7 +552,7 @@ static int setup_vrfb_rotation(struct fb_info *fbi)
> omap_vrfb_setup(&rg->vrfb, rg->paddr,
> var->xres_virtual,
> var->yres_virtual,
> - bytespp, yuv_mode);
> + bytespp, mode, 0);
>
> /* Now one can ioremap the 0 angle view */
> r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
> diff --git a/drivers/video/omap2/vrfb.c b/drivers/video/omap2/vrfb.c
> index fd22716..38d03d1 100644
> --- a/drivers/video/omap2/vrfb.c
> +++ b/drivers/video/omap2/vrfb.c
> @@ -157,7 +157,7 @@ EXPORT_SYMBOL(omap_vrfb_max_height);
>
> void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
> u16 width, u16 height,
> - unsigned bytespp, bool yuv_mode)
> + unsigned bytespp, enum omap_color_mode color_mode, int rotation)
> {
> unsigned pixel_size_exp;
> u16 vrfb_width;
> @@ -167,11 +167,12 @@ void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
> u32 control;
>
> DBG("omapfb_set_vrfb(%d, %lx, %dx%d, %d, %d)\n", ctx, paddr,
> - width, height, bytespp, yuv_mode);
> + width, height, bytespp, color_mode);
>
> /* For YUV2 and UYVY modes VRFB needs to handle pixels a bit
> * differently. See TRM. */
> - if (yuv_mode) {
> + if (color_mode == OMAP_DSS_COLOR_YUV2 ||
> + color_mode == OMAP_DSS_COLOR_UYVY) {
> bytespp *= 2;
> width /= 2;
> }
> @@ -183,6 +184,13 @@ void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
> else
> BUG();
>
> + /* for vdma */
> + /* TODO: VDMA support for RGB16 mode */
> + if (cpu_is_omap3630())
> + if (color_mode == OMAP_DSS_COLOR_YUV2)
> + if ((rotation == 1) || (rotation == 3))
> + pixel_size_exp = 2;
> +
where did UYVY go? Also what's this supposed to do? pixel_size_exp will
be to 2 for YUV anyway.
> vrfb_width = ALIGN(width * bytespp, VRFB_PAGE_WIDTH) / bytespp;
> vrfb_height = ALIGN(height, VRFB_PAGE_HEIGHT);
>
> @@ -211,7 +219,9 @@ void omap_vrfb_setup(struct vrfb *vrfb, unsigned long paddr,
> vrfb->xoffset = vrfb_width - width;
> vrfb->yoffset = vrfb_height - height;
> vrfb->bytespp = bytespp;
> - vrfb->yuv_mode = yuv_mode;
> + if (color_mode == OMAP_DSS_COLOR_YUV2 ||
> + color_mode == OMAP_DSS_COLOR_UYVY)
> + vrfb->yuv_mode = true;
> }
> EXPORT_SYMBOL(omap_vrfb_setup);
>
> --
> 1.5.4.3
> --
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--
Ville Syrjälä
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