drivers/spi/spi-butterfly.c

69 	struct butterfly	*pp = spidev_to_pp(spi);
70 	u8			bit, byte = pp->lastbyte;
78 	parport_write_data(pp->port, byte);
79 	pp->lastbyte = byte;
85 	struct butterfly	*pp = spidev_to_pp(spi);
86 	u8			bit, byte = pp->lastbyte;
94 	parport_write_data(pp->port, byte);
95 	pp->lastbyte = byte;
100 	struct butterfly	*pp = spidev_to_pp(spi);
107 	value = !(parport_read_status(pp->port) & bit);
113 	struct butterfly	*pp = spidev_to_pp(spi);
126 	parport_frob_control(pp->port, spi_cs_bit, value ? spi_cs_bit : 0);
180 	struct butterfly	*pp;
192 	host = spi_alloc_host(dev, sizeof(*pp));
197 	pp = spi_controller_get_devdata(host);
208 	pp->bitbang.ctlr = host;
209 	pp->bitbang.chipselect = butterfly_chipselect;
210 	pp->bitbang.txrx_word[SPI_MODE_0] = butterfly_txrx_word_mode0;
215 	pp->port = p;
217 	butterfly_cb.private = pp;
223 	pp->pd = pd;
235 	parport_frob_control(pp->port, spi_cs_bit, 0);
240 	pp->lastbyte |= vcc_bits;
241 	parport_write_data(pp->port, pp->lastbyte);
245 	pp->lastbyte |= butterfly_nreset;
246 	parport_write_data(pp->port, pp->lastbyte);
252 	status = spi_bitbang_start(&pp->bitbang);
261 	pp->info[0].max_speed_hz = 15 * 1000 * 1000;
262 	strcpy(pp->info[0].modalias, "mtd_dataflash");
263 	pp->info[0].platform_data = &flash;
264 	pp->info[0].chip_select = 1;
265 	pp->info[0].controller_data = pp;
266 	pp->dataflash = spi_new_device(pp->bitbang.ctlr, &pp->info[0]);
267 	if (pp->dataflash)
269 			 dev_name(&pp->dataflash->dev));
272 	butterfly = pp;
277 	parport_write_data(pp->port, 0);
279 	parport_release(pp->pd);
290 	struct butterfly	*pp;
298 	pp = butterfly;
302 	spi_bitbang_stop(&pp->bitbang);
305 	parport_write_data(pp->port, 0);
308 	parport_release(pp->pd);
309 	parport_unregister_device(pp->pd);
311 	spi_controller_put(pp->bitbang.ctlr);