33 int sport_set_tx_params(struct sport_device *sport,  in sport_set_tx_params()  argument
36 	if (sport->tx_regs->spctl & SPORT_CTL_SPENPRI)  in sport_set_tx_params()
38 	sport->tx_regs->spctl = params->spctl | SPORT_CTL_SPTRAN;  in sport_set_tx_params()
39 	sport->tx_regs->div = params->div;  in sport_set_tx_params()
45 int sport_set_rx_params(struct sport_device *sport,  in sport_set_rx_params()  argument
48 	if (sport->rx_regs->spctl & SPORT_CTL_SPENPRI)  in sport_set_rx_params()
50 	sport->rx_regs->spctl = params->spctl & ~SPORT_CTL_SPTRAN;  in sport_set_rx_params()
51 	sport->rx_regs->div = params->div;  in sport_set_rx_params()
69 void sport_tx_start(struct sport_device *sport)  in sport_tx_start()  argument
71 	set_dma_next_desc_addr(sport->tx_dma_chan, sport->tx_desc);  in sport_tx_start()
72 	set_dma_config(sport->tx_dma_chan, DMAFLOW_LIST | DI_EN  in sport_tx_start()
73 			| compute_wdsize(sport->wdsize) | NDSIZE_6);  in sport_tx_start()
74 	enable_dma(sport->tx_dma_chan);  in sport_tx_start()
75 	sport->tx_regs->spctl |= SPORT_CTL_SPENPRI;  in sport_tx_start()
80 void sport_rx_start(struct sport_device *sport)  in sport_rx_start()  argument
82 	set_dma_next_desc_addr(sport->rx_dma_chan, sport->rx_desc);  in sport_rx_start()
83 	set_dma_config(sport->rx_dma_chan, DMAFLOW_LIST | DI_EN | WNR  in sport_rx_start()
84 			| compute_wdsize(sport->wdsize) | NDSIZE_6);  in sport_rx_start()
85 	enable_dma(sport->rx_dma_chan);  in sport_rx_start()
86 	sport->rx_regs->spctl |= SPORT_CTL_SPENPRI;  in sport_rx_start()
91 void sport_tx_stop(struct sport_device *sport)  in sport_tx_stop()  argument
93 	sport->tx_regs->spctl &= ~SPORT_CTL_SPENPRI;  in sport_tx_stop()
95 	disable_dma(sport->tx_dma_chan);  in sport_tx_stop()
99 void sport_rx_stop(struct sport_device *sport)  in sport_rx_stop()  argument
101 	sport->rx_regs->spctl &= ~SPORT_CTL_SPENPRI;  in sport_rx_stop()
103 	disable_dma(sport->rx_dma_chan);  in sport_rx_stop()
107 void sport_set_tx_callback(struct sport_device *sport,  in sport_set_tx_callback()  argument
110 	sport->tx_callback = tx_callback;  in sport_set_tx_callback()
111 	sport->tx_data = tx_data;  in sport_set_tx_callback()
115 void sport_set_rx_callback(struct sport_device *sport,  in sport_set_rx_callback()  argument
118 	sport->rx_callback = rx_callback;  in sport_set_rx_callback()
119 	sport->rx_data = rx_data;  in sport_set_rx_callback()
144 int sport_config_tx_dma(struct sport_device *sport, void *buf,  in sport_config_tx_dma()  argument
151 	count = fragsize/sport->wdsize;  in sport_config_tx_dma()
153 	if (sport->tx_desc)  in sport_config_tx_dma()
154 		dma_free_coherent(NULL, sport->tx_desc_size,  in sport_config_tx_dma()
155 				sport->tx_desc, 0);  in sport_config_tx_dma()
157 	sport->tx_desc = dma_alloc_coherent(NULL,  in sport_config_tx_dma()
159 	sport->tx_desc_size = fragcount * sizeof(struct dmasg);  in sport_config_tx_dma()
160 	if (!sport->tx_desc)  in sport_config_tx_dma()
163 	sport->tx_buf = buf;  in sport_config_tx_dma()
164 	sport->tx_fragsize = fragsize;  in sport_config_tx_dma()
165 	sport->tx_frags = fragcount;  in sport_config_tx_dma()
166 	cfg = DMAFLOW_LIST | DI_EN | compute_wdsize(sport->wdsize) | NDSIZE_6;  in sport_config_tx_dma()
168 	setup_desc(sport->tx_desc, buf, fragcount, fragsize,  in sport_config_tx_dma()
169 			cfg|DMAEN, count, sport->wdsize);  in sport_config_tx_dma()
175 int sport_config_rx_dma(struct sport_device *sport, void *buf,  in sport_config_rx_dma()  argument
182 	count = fragsize/sport->wdsize;  in sport_config_rx_dma()
184 	if (sport->rx_desc)  in sport_config_rx_dma()
185 		dma_free_coherent(NULL, sport->rx_desc_size,  in sport_config_rx_dma()
186 				sport->rx_desc, 0);  in sport_config_rx_dma()
188 	sport->rx_desc = dma_alloc_coherent(NULL,  in sport_config_rx_dma()
190 	sport->rx_desc_size = fragcount * sizeof(struct dmasg);  in sport_config_rx_dma()
191 	if (!sport->rx_desc)  in sport_config_rx_dma()
194 	sport->rx_buf = buf;  in sport_config_rx_dma()
195 	sport->rx_fragsize = fragsize;  in sport_config_rx_dma()
196 	sport->rx_frags = fragcount;  in sport_config_rx_dma()
197 	cfg = DMAFLOW_LIST | DI_EN | compute_wdsize(sport->wdsize)  in sport_config_rx_dma()
200 	setup_desc(sport->rx_desc, buf, fragcount, fragsize,  in sport_config_rx_dma()
201 			cfg|DMAEN, count, sport->wdsize);  in sport_config_rx_dma()
207 unsigned long sport_curr_offset_tx(struct sport_device *sport)  in sport_curr_offset_tx()  argument
209 	unsigned long curr = get_dma_curr_addr(sport->tx_dma_chan);  in sport_curr_offset_tx()
211 	return (unsigned char *)curr - sport->tx_buf;  in sport_curr_offset_tx()
215 unsigned long sport_curr_offset_rx(struct sport_device *sport)  in sport_curr_offset_rx()  argument
217 	unsigned long curr = get_dma_curr_addr(sport->rx_dma_chan);  in sport_curr_offset_rx()
219 	return (unsigned char *)curr - sport->rx_buf;  in sport_curr_offset_rx()
225 	struct sport_device *sport = dev_id;  in sport_tx_irq()  local
228 	status = get_dma_curr_irqstat(sport->tx_dma_chan);  in sport_tx_irq()
230 		clear_dma_irqstat(sport->tx_dma_chan);  in sport_tx_irq()
233 	if (sport->tx_callback)  in sport_tx_irq()
234 		sport->tx_callback(sport->tx_data);  in sport_tx_irq()
240 	struct sport_device *sport = dev_id;  in sport_rx_irq()  local
243 	status = get_dma_curr_irqstat(sport->rx_dma_chan);  in sport_rx_irq()
245 		clear_dma_irqstat(sport->rx_dma_chan);  in sport_rx_irq()
248 	if (sport->rx_callback)  in sport_rx_irq()
249 		sport->rx_callback(sport->rx_data);  in sport_rx_irq()
255 	struct sport_device *sport = dev_id;  in sport_err_irq()  local
256 	struct device *dev = &sport->pdev->dev;  in sport_err_irq()
258 	if (sport->tx_regs->spctl & SPORT_CTL_DERRPRI)  in sport_err_irq()
260 	if (sport->rx_regs->spctl & SPORT_CTL_DERRPRI)  in sport_err_irq()
266 static int sport_get_resource(struct sport_device *sport)  in sport_get_resource()  argument
268 	struct platform_device *pdev = sport->pdev;  in sport_get_resource()
277 	sport->pin_req = pdata->pin_req;  in sport_get_resource()
284 	sport->tx_regs = (struct sport_register *)res->start;  in sport_get_resource()
291 	sport->rx_regs = (struct sport_register *)res->start;  in sport_get_resource()
298 	sport->tx_dma_chan = res->start;  in sport_get_resource()
305 	sport->rx_dma_chan = res->start;  in sport_get_resource()
312 	sport->tx_err_irq = res->start;  in sport_get_resource()
319 	sport->rx_err_irq = res->start;  in sport_get_resource()
324 static int sport_request_resource(struct sport_device *sport)  in sport_request_resource()  argument
326 	struct device *dev = &sport->pdev->dev;  in sport_request_resource()
329 	ret = peripheral_request_list(sport->pin_req, "soc-audio");  in sport_request_resource()
335 	ret = request_dma(sport->tx_dma_chan, "SPORT TX Data");  in sport_request_resource()
340 	set_dma_callback(sport->tx_dma_chan, sport_tx_irq, sport);  in sport_request_resource()
342 	ret = request_dma(sport->rx_dma_chan, "SPORT RX Data");  in sport_request_resource()
347 	set_dma_callback(sport->rx_dma_chan, sport_rx_irq, sport);  in sport_request_resource()
349 	ret = request_irq(sport->tx_err_irq, sport_err_irq,  in sport_request_resource()
350 			0, "SPORT TX ERROR", sport);  in sport_request_resource()
356 	ret = request_irq(sport->rx_err_irq, sport_err_irq,  in sport_request_resource()
357 			0, "SPORT RX ERROR", sport);  in sport_request_resource()
365 	free_irq(sport->tx_err_irq, sport);  in sport_request_resource()
367 	free_dma(sport->rx_dma_chan);  in sport_request_resource()
369 	free_dma(sport->tx_dma_chan);  in sport_request_resource()
371 	peripheral_free_list(sport->pin_req);  in sport_request_resource()
375 static void sport_free_resource(struct sport_device *sport)  in sport_free_resource()  argument
377 	free_irq(sport->rx_err_irq, sport);  in sport_free_resource()
378 	free_irq(sport->tx_err_irq, sport);  in sport_free_resource()
379 	free_dma(sport->rx_dma_chan);  in sport_free_resource()
380 	free_dma(sport->tx_dma_chan);  in sport_free_resource()
381 	peripheral_free_list(sport->pin_req);  in sport_free_resource()
387 	struct sport_device *sport;  in sport_create()  local
390 	sport = kzalloc(sizeof(*sport), GFP_KERNEL);  in sport_create()
391 	if (!sport) {  in sport_create()
395 	sport->pdev = pdev;  in sport_create()
397 	ret = sport_get_resource(sport);  in sport_create()
399 		kfree(sport);  in sport_create()
403 	ret = sport_request_resource(sport);  in sport_create()
405 		kfree(sport);  in sport_create()
410 	return sport;  in sport_create()
414 void sport_delete(struct sport_device *sport)  in sport_delete()  argument
416 	if (sport->tx_desc)  in sport_delete()
417 		dma_free_coherent(NULL, sport->tx_desc_size,  in sport_delete()
418 				sport->tx_desc, 0);  in sport_delete()
419 	if (sport->rx_desc)  in sport_delete()
420 		dma_free_coherent(NULL, sport->rx_desc_size,  in sport_delete()
421 				sport->rx_desc, 0);  in sport_delete()
422 	sport_free_resource(sport);  in sport_delete()
423 	kfree(sport);  in sport_delete()