Hi Paul,
I have found out bug in height configuration, will be sending out version 2 of this patch.
Thanks,
Prakash
On Mon, Jun 27, 2011 at 10:26:43, Manjunathappa, Prakash wrote:
> Revised LCDC IP of DA850 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.
>
> Signed-off-by: Manjunathappa, Prakash <prakash.pm@xxxxxx>
> ---
> drivers/video/da8xx-fb.c | 30 +++++++++++++++++++++++++++---
> 1 files changed, 27 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
> index 0e02665..367d839 100644
> --- a/drivers/video/da8xx-fb.c
> +++ b/drivers/video/da8xx-fb.c
> @@ -460,20 +460,44 @@ 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
> + * 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);
> + 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) & 0x40) << 20);
> + lcdc_write(reg, LCD_RASTER_TIMING_2_REG);
> + }
> +
> /* Set the Raster Order of the Frame Buffer */
> reg = lcdc_read(LCD_RASTER_CTRL_REG) & ~(1 << 8);
> if (raster_order)
> --
> 1.7.1
>
>
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