[PATCH] video: da8xx-fb: Increased resolution configuration of revised LCDC IP

[PATCH] video: da8xx-fb: Increased resolution configuration of revised LCDC IP

[Manjunathappa, Prakash]

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@ti.com>
---
 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