1285 			snprintf(str, sizeof(str), "PPM=%d", audio->params.ppm);  in g_audio_work()
1307 	int32_t ppm;  in ppm_calculate_work()  local
1317 		dev_warn(g_audio->device, "PPM work scheduled too slow!\n");  in ppm_calculate_work()
1363 	 * According to the definition of ppm:  in ppm_calculate_work()
1364 	 *   host_clk = (1 + ppm / 1000000) * gadget_clk  in ppm_calculate_work()
1366 	 *   ppm = (host_clk - gadget_clk) * 1000000 / gadget_clk  in ppm_calculate_work()
1368 	ppm = (fn_msec > clk_msec) ?  in ppm_calculate_work()
1372 	ppm_sum = ppm_sum - ppms[cnt] + ppm;  in ppm_calculate_work()
1373 	ppms[cnt] = ppm;  in ppm_calculate_work()
1377 		fn_msec, clk_msec, ppm, CLK_PPM_GROUP_SIZE,  in ppm_calculate_work()
1381 	 * We calculate the average of ppm over a period of time. If the  in ppm_calculate_work()
1385 	if (abs(ppm_sum / CLK_PPM_GROUP_SIZE - ppm) < 3) {  in ppm_calculate_work()
1386 		ppm = ppm_sum > 0 ?  in ppm_calculate_work()
1389 		if (ppm != g_audio->params.ppm) {  in ppm_calculate_work()
1390 			g_audio->params.ppm = ppm;  in ppm_calculate_work()