dev/qcom_qup/qcom_spi.c

135 	 * transfer.
137 	if (sc->transfer.active == false) {
170 		 * it at the beginning of the transfer.
188 	 * transfer in the PIO receive path above and it will
193 		sc->transfer.done = true;
195 		    "%s: transfer done\n", __func__);
393 		device_printf(dev, "ERROR: Could not read transfer config\n");
457  * Do a PIO transfer.
484 	 * Make initial choices for transfer configuration.
489 		    "ERROR: failed to setup transfer selection (%d)\n",
495 	sc->transfer.tx_buf = tx_buf;
496 	sc->transfer.tx_len = tx_len;
497 	sc->transfer.rx_buf = rx_buf;
498 	sc->transfer.rx_len = rx_len;
499 	sc->transfer.done = false;
500 	sc->transfer.active = false;
503 	 * Loop until the full transfer set is done.
506 	 * setting a maximum transfer size for the hardware and choose
509 	while (sc->transfer.tx_offset < sc->transfer.tx_len) {
511 		 * Set transfer to false early; this covers
512 		 * it also finishing a sub-transfer and we're
514 		 * starting a new transfer.
516 		sc->transfer.active = false;
521 		    sc->transfer.tx_offset, sc->transfer.tx_len,
522 		    sc->transfer.rx_offset, sc->transfer.rx_len);
527 		 * Otherwise the second sub-transfer that we queue up
539 		sc->transfer.done = false;
542 		 * Configure what the transfer configuration for this
543 		 * sub-transfer will be.
548 			    "ERROR: failed to setup sub transfer (%d)\n",
555 		 * the PIO transfer size.
567 		 * This is what we'd do to setup the block transfer sizes.
630 		sc->transfer.active = true;
676 		 * sub-transfer) or timeout.
679 		while (ret == 0 && sc->transfer.done == false) {
697 	  * Blank the transfer state so we don't use an old transfer
701 	sc->transfer.active = false;
784 	 * cmd buffer transfer
790 		    "ERROR: failed to transfer cmd payload (%u)\n", ret);
795 	 * data buffer transfer
802 			    "ERROR: failed to transfer data payload (%u)\n",