drm/panel: Fix the panel's timing clock

There is a problem that sparkling pixels in panel. So we need to get
the latest timing clock values from the mainline.

Change-Id: I330c56815bb5e732a9bad87500dd69191118528c
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>

1 files changed, 8 insertions, 25 deletions

diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index 128523d8d518..186969f148e1 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
@@ -205,35 +205,18 @@ struct rpi_touchscreen {
 
 static const struct drm_display_mode rpi_touchscreen_modes[] = {
 	{
-		/* The DSI PLL can only integer divide from the 2Ghz
-		 * PLLD, giving us few choices.  We pick a divide by 3
-		 * as our DSI HS clock, giving us a pixel clock of
-		 * that divided by 24 bits.  Pad out HFP to get our
-		 * panel to refresh at 60Hz, even if that doesn't
-		 * match the datasheet.
+		/* Modeline comes from the Raspberry Pi firmware, with HFP=1
+		 * plugged in and clock re-computed from that.
 		 */
-#define PIXEL_CLOCK ((2000000000 / 3) / 24)
-#define VREFRESH    60
-#define VTOTAL      (480 + 7 + 2 + 21)
-#define HACT        800
-#define HSW         2
-#define HBP         46
-#define HFP         ((PIXEL_CLOCK / (VTOTAL * VREFRESH)) - (HACT + HSW + HBP))
-
-		/* Round up the pixel clock a bit (10khz), so that the
-		 * "don't run things faster than the requested clock
-		 * rate" rule of the clk driver doesn't reject the
-		 * divide-by-3 mode due to rounding error.
-		 */
-		.clock = PIXEL_CLOCK / 1000 + 10,
-		.hdisplay = HACT,
-		.hsync_start = HACT + HFP,
-		.hsync_end = HACT + HFP + HSW,
-		.htotal = HACT + HFP + HSW + HBP,
+		.clock = 25979400 / 1000,
+		.hdisplay = 800,
+		.hsync_start = 800 + 1,
+		.hsync_end = 800 + 1 + 2,
+		.htotal = 800 + 1 + 2 + 46,
 		.vdisplay = 480,
 		.vsync_start = 480 + 7,
 		.vsync_end = 480 + 7 + 2,
-		.vtotal = VTOTAL,
+		.vtotal = 480 + 7 + 2 + 21,
 		.vrefresh = 60,
 	},
 };