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Commit ab9f51c0 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dp: use usleep_range rather than udelay 



Based on common dp code proposed by Thierry Reding.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2138681b

drivers/gpu/drm/radeon/atombios_dp.c

+4 −4
Original line number Diff line number Diff line
@@ -172,7 +172,7 @@ static int radeon_dp_aux_native_write(struct radeon_connector *radeon_connector, 
		if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)

			return send_bytes;

		else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)

			udelay(400);

			usleep_range(400, 500);

		else

			return -EIO;

	}
@@ -206,7 +206,7 @@ static int radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, 
		if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)

			return ret;

		else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)

			udelay(400);

			usleep_range(400, 500);

		else if (ret == 0)

			return -EPROTO;

		else
@@ -295,7 +295,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, 
			return -EREMOTEIO;

		case DP_AUX_NATIVE_REPLY_DEFER:

			DRM_DEBUG_KMS("aux_ch native defer\n");

			udelay(400);

			usleep_range(500, 600);

			continue;

		default:

			DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
@@ -312,7 +312,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, 
			return -EREMOTEIO;

		case DP_AUX_I2C_REPLY_DEFER:

			DRM_DEBUG_KMS("aux_i2c defer\n");

			udelay(400);

			usleep_range(400, 500);

			break;

		default:

			DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);