615 	int ch, free_ch = -1;  in omap_request_dma()  local
622 	for (ch = 0; ch < dma_chan_count; ch++) {  in omap_request_dma()
623 		if (free_ch == -1 && dma_chan[ch].dev_id == -1) {  in omap_request_dma()
624 			free_ch = ch;  in omap_request_dma()
1091 static int omap1_dma_handle_ch(int ch)  in omap1_dma_handle_ch()  argument
1095 	if (enable_1510_mode && ch >= 6) {  in omap1_dma_handle_ch()
1096 		csr = dma_chan[ch].saved_csr;  in omap1_dma_handle_ch()
1097 		dma_chan[ch].saved_csr = 0;  in omap1_dma_handle_ch()
1099 		csr = p->dma_read(CSR, ch);  in omap1_dma_handle_ch()
1100 	if (enable_1510_mode && ch <= 2 && (csr >> 7) != 0) {  in omap1_dma_handle_ch()
1101 		dma_chan[ch + 6].saved_csr = csr >> 7;  in omap1_dma_handle_ch()
1106 	if (unlikely(dma_chan[ch].dev_id == -1)) {  in omap1_dma_handle_ch()
1108 			ch, csr);  in omap1_dma_handle_ch()
1112 		pr_warn("DMA timeout with device %d\n", dma_chan[ch].dev_id);  in omap1_dma_handle_ch()
1115 			dma_chan[ch].dev_id);  in omap1_dma_handle_ch()
1117 		dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE;  in omap1_dma_handle_ch()
1118 	if (likely(dma_chan[ch].callback != NULL))  in omap1_dma_handle_ch()
1119 		dma_chan[ch].callback(ch, csr, dma_chan[ch].data);  in omap1_dma_handle_ch()
1126 	int ch = ((int) dev_id) - 1;  in omap1_dma_irq_handler()  local
1132 		handled_now += omap1_dma_handle_ch(ch);  in omap1_dma_irq_handler()
1133 		if (enable_1510_mode && dma_chan[ch + 6].saved_csr)  in omap1_dma_irq_handler()
1134 			handled_now += omap1_dma_handle_ch(ch + 6);  in omap1_dma_irq_handler()
1149 static int omap2_dma_handle_ch(int ch)  in omap2_dma_handle_ch()  argument
1151 	u32 status = p->dma_read(CSR, ch);  in omap2_dma_handle_ch()
1155 			pr_warn("Spurious DMA IRQ for lch %d\n", ch);  in omap2_dma_handle_ch()
1156 		p->dma_write(1 << ch, IRQSTATUS_L0, ch);  in omap2_dma_handle_ch()
1159 	if (unlikely(dma_chan[ch].dev_id == -1)) {  in omap2_dma_handle_ch()
1162 				status, ch);  in omap2_dma_handle_ch()
1167 			dma_chan[ch].dev_id);  in omap2_dma_handle_ch()
1170 		       dma_chan[ch].dev_id);  in omap2_dma_handle_ch()
1174 			ccr = p->dma_read(CCR, ch);  in omap2_dma_handle_ch()
1176 			p->dma_write(ccr, CCR, ch);  in omap2_dma_handle_ch()
1177 			dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE;  in omap2_dma_handle_ch()
1182 		       dma_chan[ch].dev_id);  in omap2_dma_handle_ch()
1185 		       dma_chan[ch].dev_id);  in omap2_dma_handle_ch()
1187 	p->dma_write(status, CSR, ch);  in omap2_dma_handle_ch()
1188 	p->dma_write(1 << ch, IRQSTATUS_L0, ch);  in omap2_dma_handle_ch()
1190 	p->dma_read(IRQSTATUS_L0, ch);  in omap2_dma_handle_ch()
1193 	if (dma_chan[ch].chain_id != -1) {  in omap2_dma_handle_ch()
1194 		int chain_id = dma_chan[ch].chain_id;  in omap2_dma_handle_ch()
1195 		dma_chan[ch].state = DMA_CH_NOTSTARTED;  in omap2_dma_handle_ch()
1196 		if (p->dma_read(CLNK_CTRL, ch) & (1 << 15))  in omap2_dma_handle_ch()
1197 			dma_chan[dma_chan[ch].next_linked_ch].state =  in omap2_dma_handle_ch()
1201 			disable_lnk(ch);  in omap2_dma_handle_ch()
1206 		status = p->dma_read(CSR, ch);  in omap2_dma_handle_ch()
1207 		p->dma_write(status, CSR, ch);  in omap2_dma_handle_ch()
1210 	if (likely(dma_chan[ch].callback != NULL))  in omap2_dma_handle_ch()
1211 		dma_chan[ch].callback(ch, status, dma_chan[ch].data);  in omap2_dma_handle_ch()
1268 	int ch;  in omap_dma_global_context_restore()  local
1281 	for (ch = 0; ch < dma_chan_count; ch++)  in omap_dma_global_context_restore()
1282 		if (dma_chan[ch].dev_id != -1)  in omap_dma_global_context_restore()
1283 			omap_clear_dma(ch);  in omap_dma_global_context_restore()
1294 	int ch, ret = 0;  in omap_system_dma_probe()  local
1336 	for (ch = 0; ch < dma_chan_count; ch++) {  in omap_system_dma_probe()
1337 		omap_clear_dma(ch);  in omap_system_dma_probe()
1339 			omap2_disable_irq_lch(ch);  in omap_system_dma_probe()
1341 		dma_chan[ch].dev_id = -1;  in omap_system_dma_probe()
1342 		dma_chan[ch].next_lch = -1;  in omap_system_dma_probe()
1344 		if (ch >= 6 && enable_1510_mode)  in omap_system_dma_probe()
1352 			sprintf(&irq_name[0], "%d", ch);  in omap_system_dma_probe()
1366 					(void *) (ch + 1));  in omap_system_dma_probe()
1404 	for (irq_rel = 0; irq_rel < ch;	irq_rel++) {  in omap_system_dma_probe()