drm/i2c: tda998x: add some basic mode validation



The TDA998x can't handle modes with clocks above 150MHz, or resolutions
larger than 8192x2048.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 713456db

drivers/gpu/drm/i2c/tda998x_drv.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -810,6 +810,12 @@ static int
		tda998x_encoder_mode_valid(struct drm_encoder *encoder,
		struct drm_display_mode *mode)
		{
		if (mode->clock > 150000)
		return MODE_CLOCK_HIGH;
		if (mode->htotal >= BIT(13))
		return MODE_BAD_HVALUE;
		if (mode->vtotal >= BIT(11))
		return MODE_BAD_VVALUE;
		return MODE_OK;
		}