+ /* Fsref can be 32000, 44100 or 48000. */
+ fs = params_rate(params);
+
+#ifndef CONFIG_SFFSDR_FPGA
+ /* Without the FPGA module, the Fs is fixed at 44100 Hz */
+ if (fs != 44100) {
+ pr_debug("warning: only 44.1 kHz is supported without SFFSDR FPGA module\n");
+ return -EINVAL;
+ }
+#endif
+