Hi Sergei,
On Thu, Jul 14, 2011 at 16:05:35, Sergei Shtylyov wrote:
> Hello.
>
> On 13-07-2011 14:52, Manjunathappa, Prakash wrote:
>
> > Revised LCD controller in upcoming TI SoC which is an updated version of
> > LCDC IP that was found on TI's DA850 SoC supports 2048*2048 resolution.
> > Below are the encoding details:
> > Width:
> > Pixels Per Line = {pplmsb, ppllsb, 4'b1111} + 1
> > Where pplmsb:1bit==>Raster Timing0[3], ppllsb:6bits==>Raster Timing0[9:4].
> > And encoded value can range from 16 to 2048 in multiples of 16.
>
> > Height:
> > Lines Per Panel = {lpp_b10, lpp}
> > Where lpp:10bits==>Raster Timing1[9:0], lpp_b10:1bit==>Raster Timing2[26].
> > And encoded value can range from 1 to 2048, programmable range is 0 to
> > 2047.
>
> > Patch is verified on emulation platform of upcoming SoC for updated
> > feature and on DA850 platform to make sure nothing existing breaks.
>
> > Signed-off-by: Manjunathappa, Prakash<prakash.pm@xxxxxx>
> > ---
> > Since v1:
> > 1)Fixed the bug in configuration of lpp_b10 in Raster Timing2[26] register.
> > 2)Reframed commit message.
> > drivers/video/da8xx-fb.c | 31 ++++++++++++++++++++++++++++---
> > 1 files changed, 28 insertions(+), 3 deletions(-)
>
> > diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
> > index 620f1c3..19ce407 100644
> > --- a/drivers/video/da8xx-fb.c
> > +++ b/drivers/video/da8xx-fb.c
> > @@ -460,18 +460,43 @@ static int lcd_cfg_frame_buffer(struct da8xx_fb_par *par, u32 width, u32 height,
> >
> > /* Set the Panel Width */
> > /* Pixels per line = (PPL + 1)*16 */
> > - /*0x3F in bits 4..9 gives max horisontal resolution = 1024 pixels*/
> > - width&= 0x3f0;
> > + if (lcd_revision == LCD_VERSION_1) {
> > + /*
> > + * 0x3F in bits 4..9 gives max horizontal resolution = 1024
> > + * pixels.
> > + */
> > + width&= 0x3f0;
> > + } else {
> > + /*
> > + * 0x7F in bits 3..9 gives max horizontal resolution = 2048
>
> Maybe bits 4..10?
Correct, I will fix this comment.
>
> > + * pixels.
> > + */
> > + width&= 0x7f0;
> > + }
> > +
> > reg = lcdc_read(LCD_RASTER_TIMING_0_REG);
> > reg &= 0xfffffc00;
> > - reg |= ((width >> 4) - 1) << 4;
> > + if (lcd_revision == LCD_VERSION_1) {
> > + reg |= ((width>> 4) - 1)<< 4;
> > + } else {
> > + width = ((width>> 4) - 1);
>
> Most outer parens not needed.
Ok. I will remove them.
>
> > + reg |= ((width & 0x3f) << 4) | ((width& 0x40) >> 3);
> > + }
> > lcdc_write(reg, LCD_RASTER_TIMING_0_REG);
> >
> > /* Set the Panel Height */
> > + /* Set bits 9:0 of Lines Per Pixel */
> > reg = lcdc_read(LCD_RASTER_TIMING_1_REG);
> > reg = ((height - 1) & 0x3ff) | (reg & 0xfffffc00);
> > lcdc_write(reg, LCD_RASTER_TIMING_1_REG);
> >
> > + /* Set bit 10 of Lines Per Pixel */
> > + if (lcd_revision == LCD_VERSION_2) {
> > + reg = lcdc_read(LCD_RASTER_TIMING_2_REG);
> > + reg |= (((height - 1) & 0x400) << 16);
>
> Most outer parens not needed.
Ok. I will remove them.
Thanks,
Prakash
>
> WBR, Sergei
>
--
To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
