40 static void dma_channel_release(struct dma_channel *channel);
45 	struct dma_channel *channel;  in dma_controller_stop()  local
54 				channel = &controller->channel[bit].channel;  in dma_controller_stop()
55 				dma_channel_release(channel);  in dma_controller_stop()
70 	struct dma_channel *channel = NULL;  in dma_channel_allocate()  local
76 			musb_channel = &(controller->channel[bit]);  in dma_channel_allocate()
81 			channel = &(musb_channel->channel);  in dma_channel_allocate()
82 			channel->private_data = musb_channel;  in dma_channel_allocate()
83 			channel->status = MUSB_DMA_STATUS_FREE;  in dma_channel_allocate()
84 			channel->max_len = 0x100000;  in dma_channel_allocate()
86 			channel->desired_mode = transmit;  in dma_channel_allocate()
87 			channel->actual_len = 0;  in dma_channel_allocate()
92 	return channel;  in dma_channel_allocate()
95 static void dma_channel_release(struct dma_channel *channel)  in dma_channel_release()  argument
97 	struct musb_dma_channel *musb_channel = channel->private_data;  in dma_channel_release()
99 	channel->actual_len = 0;  in dma_channel_release()
106 	channel->status = MUSB_DMA_STATUS_UNKNOWN;  in dma_channel_release()
109 static void configure_channel(struct dma_channel *channel,  in configure_channel()  argument
113 	struct musb_dma_channel *musb_channel = channel->private_data;  in configure_channel()
121 			channel, packet_sz, dma_addr, len, mode);  in configure_channel()
147 static int dma_channel_program(struct dma_channel *channel,  in dma_channel_program()  argument
151 	struct musb_dma_channel *musb_channel = channel->private_data;  in dma_channel_program()
160 	BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN ||  in dma_channel_program()
161 		channel->status == MUSB_DMA_STATUS_BUSY);  in dma_channel_program()
165 		int ret = musb->ops->adjust_channel_params(channel,  in dma_channel_program()
183 	channel->actual_len = 0;  in dma_channel_program()
187 	channel->status = MUSB_DMA_STATUS_BUSY;  in dma_channel_program()
189 	configure_channel(channel, packet_sz, mode, dma_addr, len);  in dma_channel_program()
194 static int dma_channel_abort(struct dma_channel *channel)  in dma_channel_abort()  argument
196 	struct musb_dma_channel *musb_channel = channel->private_data;  in dma_channel_abort()
204 	if (channel->status == MUSB_DMA_STATUS_BUSY) {  in dma_channel_abort()
234 		channel->status = MUSB_DMA_STATUS_FREE;  in dma_channel_abort()
245 	struct dma_channel *channel;  in dma_controller_irq()  local
273 					&(controller->channel[bchannel]);  in dma_controller_irq()
274 			channel = &musb_channel->channel;  in dma_controller_irq()
275 			if (channel->status == MUSB_DMA_STATUS_BUSY) {  in dma_controller_irq()
292 					&(controller->channel[bchannel]);  in dma_controller_irq()
293 			channel = &musb_channel->channel;  in dma_controller_irq()
300 				musb_channel->channel.status =  in dma_controller_irq()
307 				channel->actual_len = addr  in dma_controller_irq()
311 					channel, musb_channel->start_addr,  in dma_controller_irq()
312 					addr, channel->actual_len,  in dma_controller_irq()
314 					(channel->actual_len  in dma_controller_irq()
320 				channel->status = MUSB_DMA_STATUS_FREE;  in dma_controller_irq()
325 					&& ((channel->desired_mode == 0)  in dma_controller_irq()
326 					    || (channel->actual_len &  in dma_controller_irq()