drm/radeon/dp: use usleep_range rather than udelay
Based on common dp code proposed by Thierry Reding. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -172,7 +172,7 @@ static int radeon_dp_aux_native_write(struct radeon_connector *radeon_connector,
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if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)
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return send_bytes;
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else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)
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udelay(400);
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usleep_range(400, 500);
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else
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return -EIO;
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}
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@ -206,7 +206,7 @@ static int radeon_dp_aux_native_read(struct radeon_connector *radeon_connector,
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if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK)
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return ret;
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else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER)
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udelay(400);
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usleep_range(400, 500);
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else if (ret == 0)
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return -EPROTO;
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else
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@ -295,7 +295,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
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return -EREMOTEIO;
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case DP_AUX_NATIVE_REPLY_DEFER:
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DRM_DEBUG_KMS("aux_ch native defer\n");
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udelay(400);
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usleep_range(500, 600);
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continue;
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default:
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DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
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@ -312,7 +312,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
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return -EREMOTEIO;
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case DP_AUX_I2C_REPLY_DEFER:
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DRM_DEBUG_KMS("aux_i2c defer\n");
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udelay(400);
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usleep_range(400, 500);
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break;
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default:
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DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);
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