drm: xilinx: vtc: removing hard coded values for signal polarity

removing hard coded values for following signal polarity parameters,
and taking from vm.flags instead.
This will help clients driver to program signal polarity as per
drivers need.

	- hsync
	- vsync
	- hblank
	- vblank
	- field_id

Signed-off-by: Saurabh Sengar <saurabhs@xilinx.com>
Reviewed-by: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/gpu/drm/xilinx/xilinx_vtc.c b/drivers/gpu/drm/xilinx/xilinx_vtc.c
index 14c40b155d35ea5339b015370c834eb134c24397..0f3a1780fbe95f0e5f5d2eeea92d0f8e34890006 100644 (file)
--- a/drivers/gpu/drm/xilinx/xilinx_vtc.c
+++ b/drivers/gpu/drm/xilinx/xilinx_vtc.c
@@ -272,9 +272,7 @@ struct xilinx_vtc_src_config {
 static void xilinx_vtc_config_polarity(struct xilinx_vtc *vtc,
                                       struct xilinx_vtc_polarity *polarity)
 {
-       u32 reg;
-
-       reg = xilinx_drm_readl(vtc->base, VTC_GPOL);
+       u32 reg = 0;
 
        if (polarity->active_chroma)
                reg |= VTC_CTL_ACP;
@@ -475,13 +473,13 @@ void xilinx_vtc_config_sig(struct xilinx_vtc *vtc,
        xilinx_vtc_config_hori_offset(vtc, &hori_offset);
        /* set up polarity */
        memset(&polarity, 0x0, sizeof(polarity));
-       polarity.hsync = 1;
-       polarity.vsync = 1;
-       polarity.hblank = 1;
-       polarity.vblank = 1;
+       polarity.hsync = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);
+       polarity.vsync = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
+       polarity.hblank = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);
+       polarity.vblank = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
        polarity.active_video = 1;
        polarity.active_chroma = 1;
-       polarity.field_id = 1;
+       polarity.field_id = !!(vm->flags & DISPLAY_FLAGS_INTERLACED);
        xilinx_vtc_config_polarity(vtc, &polarity);
 
        /* set up src config */