182 	struct spi_bitbang	*bitbang;  in spi_bitbang_setup()  local
185 	bitbang = spi_master_get_devdata(spi->master);  in spi_bitbang_setup()
195 	cs->txrx_word = bitbang->txrx_word[spi->mode & (SPI_CPOL|SPI_CPHA)];  in spi_bitbang_setup()
199 	if (bitbang->setup_transfer) {  in spi_bitbang_setup()
200 		int retval = bitbang->setup_transfer(spi, NULL);  in spi_bitbang_setup()
213 	spin_lock_irqsave(&bitbang->lock, flags);  in spi_bitbang_setup()
214 	if (!bitbang->busy) {  in spi_bitbang_setup()
215 		bitbang->chipselect(spi, BITBANG_CS_INACTIVE);  in spi_bitbang_setup()
218 	spin_unlock_irqrestore(&bitbang->lock, flags);  in spi_bitbang_setup()
257 	struct spi_bitbang	*bitbang;  in spi_bitbang_prepare_hardware()  local
260 	bitbang = spi_master_get_devdata(spi);  in spi_bitbang_prepare_hardware()
262 	spin_lock_irqsave(&bitbang->lock, flags);  in spi_bitbang_prepare_hardware()
263 	bitbang->busy = 1;  in spi_bitbang_prepare_hardware()
264 	spin_unlock_irqrestore(&bitbang->lock, flags);  in spi_bitbang_prepare_hardware()
272 	struct spi_bitbang	*bitbang;  in spi_bitbang_transfer_one()  local
280 	bitbang = spi_master_get_devdata(master);  in spi_bitbang_transfer_one()
299 			if (bitbang->setup_transfer) {  in spi_bitbang_transfer_one()
300 				status = bitbang->setup_transfer(spi, t);  in spi_bitbang_transfer_one()
315 			bitbang->chipselect(spi, BITBANG_CS_ACTIVE);  in spi_bitbang_transfer_one()
334 			status = bitbang->txrx_bufs(spi, t);  in spi_bitbang_transfer_one()
356 			bitbang->chipselect(spi, BITBANG_CS_INACTIVE);  in spi_bitbang_transfer_one()
369 		bitbang->chipselect(spi, BITBANG_CS_INACTIVE);  in spi_bitbang_transfer_one()
380 	struct spi_bitbang	*bitbang;  in spi_bitbang_unprepare_hardware()  local
383 	bitbang = spi_master_get_devdata(spi);  in spi_bitbang_unprepare_hardware()
385 	spin_lock_irqsave(&bitbang->lock, flags);  in spi_bitbang_unprepare_hardware()
386 	bitbang->busy = 0;  in spi_bitbang_unprepare_hardware()
387 	spin_unlock_irqrestore(&bitbang->lock, flags);  in spi_bitbang_unprepare_hardware()
422 int spi_bitbang_start(struct spi_bitbang *bitbang)  in spi_bitbang_start()  argument
424 	struct spi_master *master = bitbang->master;  in spi_bitbang_start()
427 	if (!master || !bitbang->chipselect)  in spi_bitbang_start()
430 	spin_lock_init(&bitbang->lock);  in spi_bitbang_start()
433 		master->mode_bits = SPI_CPOL | SPI_CPHA | bitbang->flags;  in spi_bitbang_start()
442 	if (!bitbang->txrx_bufs) {  in spi_bitbang_start()
443 		bitbang->use_dma = 0;  in spi_bitbang_start()
444 		bitbang->txrx_bufs = spi_bitbang_bufs;  in spi_bitbang_start()
446 			if (!bitbang->setup_transfer)  in spi_bitbang_start()
447 				bitbang->setup_transfer =  in spi_bitbang_start()
468 void spi_bitbang_stop(struct spi_bitbang *bitbang)  in spi_bitbang_stop()  argument
470 	spi_unregister_master(bitbang->master);  in spi_bitbang_stop()