184 	struct spi_bitbang	*bitbang;  in spi_bitbang_setup()  local
186 	bitbang = spi_master_get_devdata(spi->master);  in spi_bitbang_setup()
196 	cs->txrx_word = bitbang->txrx_word[spi->mode & (SPI_CPOL|SPI_CPHA)];  in spi_bitbang_setup()
200 	if (bitbang->setup_transfer) {  in spi_bitbang_setup()
201 		int retval = bitbang->setup_transfer(spi, NULL);  in spi_bitbang_setup()
214 	mutex_lock(&bitbang->lock);  in spi_bitbang_setup()
215 	if (!bitbang->busy) {  in spi_bitbang_setup()
216 		bitbang->chipselect(spi, BITBANG_CS_INACTIVE);  in spi_bitbang_setup()
219 	mutex_unlock(&bitbang->lock);  in spi_bitbang_setup()
258 	struct spi_bitbang	*bitbang;  in spi_bitbang_prepare_hardware()  local
260 	bitbang = spi_master_get_devdata(spi);  in spi_bitbang_prepare_hardware()
262 	mutex_lock(&bitbang->lock);  in spi_bitbang_prepare_hardware()
263 	bitbang->busy = 1;  in spi_bitbang_prepare_hardware()
264 	mutex_unlock(&bitbang->lock);  in spi_bitbang_prepare_hardware()
273 	struct spi_bitbang *bitbang = spi_master_get_devdata(master);  in spi_bitbang_transfer_one()  local
276 	if (bitbang->setup_transfer) {  in spi_bitbang_transfer_one()
277 		status = bitbang->setup_transfer(spi, transfer);  in spi_bitbang_transfer_one()
283 		status = bitbang->txrx_bufs(spi, transfer);  in spi_bitbang_transfer_one()
298 	struct spi_bitbang	*bitbang;  in spi_bitbang_unprepare_hardware()  local
300 	bitbang = spi_master_get_devdata(spi);  in spi_bitbang_unprepare_hardware()
302 	mutex_lock(&bitbang->lock);  in spi_bitbang_unprepare_hardware()
303 	bitbang->busy = 0;  in spi_bitbang_unprepare_hardware()
304 	mutex_unlock(&bitbang->lock);  in spi_bitbang_unprepare_hardware()
311 	struct spi_bitbang *bitbang = spi_master_get_devdata(spi->master);  in spi_bitbang_set_cs()  local
320 	bitbang->chipselect(spi, enable ? BITBANG_CS_ACTIVE :  in spi_bitbang_set_cs()
355 int spi_bitbang_start(struct spi_bitbang *bitbang)  in spi_bitbang_start()  argument
357 	struct spi_master *master = bitbang->master;  in spi_bitbang_start()
360 	if (!master || !bitbang->chipselect)  in spi_bitbang_start()
363 	mutex_init(&bitbang->lock);  in spi_bitbang_start()
366 		master->mode_bits = SPI_CPOL | SPI_CPHA | bitbang->flags;  in spi_bitbang_start()
376 	if (!bitbang->txrx_bufs) {  in spi_bitbang_start()
377 		bitbang->use_dma = 0;  in spi_bitbang_start()
378 		bitbang->txrx_bufs = spi_bitbang_bufs;  in spi_bitbang_start()
380 			if (!bitbang->setup_transfer)  in spi_bitbang_start()
381 				bitbang->setup_transfer =  in spi_bitbang_start()
402 void spi_bitbang_stop(struct spi_bitbang *bitbang)  in spi_bitbang_stop()  argument
404 	spi_unregister_master(bitbang->master);  in spi_bitbang_stop()