147 	struct ppc4xx_spi *hw;  in spi_ppc4xx_txrx()  local
153 	hw = spi_master_get_devdata(spi->master);  in spi_ppc4xx_txrx()
155 	hw->tx = t->tx_buf;  in spi_ppc4xx_txrx()
156 	hw->rx = t->rx_buf;  in spi_ppc4xx_txrx()
157 	hw->len = t->len;  in spi_ppc4xx_txrx()
158 	hw->count = 0;  in spi_ppc4xx_txrx()
161 	data = hw->tx ? hw->tx[0] : 0;  in spi_ppc4xx_txrx()
162 	out_8(&hw->regs->txd, data);  in spi_ppc4xx_txrx()
163 	out_8(&hw->regs->cr, SPI_PPC4XX_CR_STR);  in spi_ppc4xx_txrx()
164 	wait_for_completion(&hw->done);  in spi_ppc4xx_txrx()
166 	return hw->count;  in spi_ppc4xx_txrx()
171 	struct ppc4xx_spi *hw = spi_master_get_devdata(spi->master);  in spi_ppc4xx_setupxfer()  local
200 	out_8(&hw->regs->mode, cs->mode);  in spi_ppc4xx_setupxfer()
204 	scr = (hw->opb_freq / speed) - 1;  in spi_ppc4xx_setupxfer()
210 	if (in_8(&hw->regs->cdm) != cdm)  in spi_ppc4xx_setupxfer()
211 		out_8(&hw->regs->cdm, cdm);  in spi_ppc4xx_setupxfer()
213 	mutex_lock(&hw->bitbang.lock);  in spi_ppc4xx_setupxfer()
214 	if (!hw->bitbang.busy) {  in spi_ppc4xx_setupxfer()
215 		hw->bitbang.chipselect(spi, BITBANG_CS_INACTIVE);  in spi_ppc4xx_setupxfer()
218 	mutex_unlock(&hw->bitbang.lock);  in spi_ppc4xx_setupxfer()
268 	struct ppc4xx_spi *hw = spi_master_get_devdata(spi->master);  in spi_ppc4xx_chipsel()  local
277 	if (!hw->master->num_chipselect || hw->gpios[cs] == -EEXIST)  in spi_ppc4xx_chipsel()
284 	gpio_set_value(hw->gpios[cs], cspol);  in spi_ppc4xx_chipsel()
289 	struct ppc4xx_spi *hw;  in spi_ppc4xx_int()  local
294 	hw = (struct ppc4xx_spi *)dev_id;  in spi_ppc4xx_int()
296 	status = in_8(&hw->regs->sr);  in spi_ppc4xx_int()
310 		dev_dbg(hw->dev, "got interrupt but spi still busy?\n");  in spi_ppc4xx_int()
313 			lstatus = in_8(&hw->regs->sr);  in spi_ppc4xx_int()
317 			dev_err(hw->dev, "busywait: too many loops!\n");  in spi_ppc4xx_int()
318 			complete(&hw->done);  in spi_ppc4xx_int()
322 			status = in_8(&hw->regs->sr);  in spi_ppc4xx_int()
323 			dev_dbg(hw->dev, "loops %d status %x\n", cnt, status);  in spi_ppc4xx_int()
327 	count = hw->count;  in spi_ppc4xx_int()
328 	hw->count++;  in spi_ppc4xx_int()
331 	data = in_8(&hw->regs->rxd);  in spi_ppc4xx_int()
332 	if (hw->rx)  in spi_ppc4xx_int()
333 		hw->rx[count] = data;  in spi_ppc4xx_int()
337 	if (count < hw->len) {  in spi_ppc4xx_int()
338 		data = hw->tx ? hw->tx[count] : 0;  in spi_ppc4xx_int()
339 		out_8(&hw->regs->txd, data);  in spi_ppc4xx_int()
340 		out_8(&hw->regs->cr, SPI_PPC4XX_CR_STR);  in spi_ppc4xx_int()
342 		complete(&hw->done);  in spi_ppc4xx_int()
353 static void spi_ppc4xx_enable(struct ppc4xx_spi *hw)  in spi_ppc4xx_enable()  argument
365 static void free_gpios(struct ppc4xx_spi *hw)  in free_gpios()  argument
367 	if (hw->master->num_chipselect) {  in free_gpios()
369 		for (i = 0; i < hw->master->num_chipselect; i++)  in free_gpios()
370 			if (gpio_is_valid(hw->gpios[i]))  in free_gpios()
371 				gpio_free(hw->gpios[i]);  in free_gpios()
373 		kfree(hw->gpios);  in free_gpios()
374 		hw->gpios = NULL;  in free_gpios()
383 	struct ppc4xx_spi *hw;  in spi_ppc4xx_of_probe()  local
394 	master = spi_alloc_master(dev, sizeof *hw);  in spi_ppc4xx_of_probe()
399 	hw = spi_master_get_devdata(master);  in spi_ppc4xx_of_probe()
400 	hw->master = master;  in spi_ppc4xx_of_probe()
401 	hw->dev = dev;  in spi_ppc4xx_of_probe()
403 	init_completion(&hw->done);  in spi_ppc4xx_of_probe()
414 		hw->gpios = kzalloc(sizeof(int) * num_gpios, GFP_KERNEL);  in spi_ppc4xx_of_probe()
415 		if (!hw->gpios) {  in spi_ppc4xx_of_probe()
425 			hw->gpios[i] = gpio;  in spi_ppc4xx_of_probe()
449 	bbp = &hw->bitbang;  in spi_ppc4xx_of_probe()
450 	bbp->master = hw->master;  in spi_ppc4xx_of_probe()
481 	hw->opb_freq = *clk;  in spi_ppc4xx_of_probe()
482 	hw->opb_freq >>= 2;  in spi_ppc4xx_of_probe()
490 	hw->mapbase = resource.start;  in spi_ppc4xx_of_probe()
491 	hw->mapsize = resource_size(&resource);  in spi_ppc4xx_of_probe()
494 	if (hw->mapsize < sizeof(struct spi_ppc4xx_regs)) {  in spi_ppc4xx_of_probe()
501 	hw->irqnum = irq_of_parse_and_map(np, 0);  in spi_ppc4xx_of_probe()
502 	ret = request_irq(hw->irqnum, spi_ppc4xx_int,  in spi_ppc4xx_of_probe()
503 			  0, "spi_ppc4xx_of", (void *)hw);  in spi_ppc4xx_of_probe()
509 	if (!request_mem_region(hw->mapbase, hw->mapsize, DRIVER_NAME)) {  in spi_ppc4xx_of_probe()
515 	hw->regs = ioremap(hw->mapbase, sizeof(struct spi_ppc4xx_regs));  in spi_ppc4xx_of_probe()
517 	if (!hw->regs) {  in spi_ppc4xx_of_probe()
523 	spi_ppc4xx_enable(hw);  in spi_ppc4xx_of_probe()
538 	iounmap(hw->regs);  in spi_ppc4xx_of_probe()
540 	release_mem_region(hw->mapbase, hw->mapsize);  in spi_ppc4xx_of_probe()
542 	free_irq(hw->irqnum, hw);  in spi_ppc4xx_of_probe()
544 	free_gpios(hw);  in spi_ppc4xx_of_probe()
555 	struct ppc4xx_spi *hw = spi_master_get_devdata(master);  in spi_ppc4xx_of_remove()  local
557 	spi_bitbang_stop(&hw->bitbang);  in spi_ppc4xx_of_remove()
558 	release_mem_region(hw->mapbase, hw->mapsize);  in spi_ppc4xx_of_remove()
559 	free_irq(hw->irqnum, hw);  in spi_ppc4xx_of_remove()
560 	iounmap(hw->regs);  in spi_ppc4xx_of_remove()
561 	free_gpios(hw);  in spi_ppc4xx_of_remove()