From patchwork Thu May 6 23:24:24 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 97500 Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o46NamwQ008955 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 6 May 2010 23:38:10 GMT Received: from dlep35.itg.ti.com ([157.170.170.118]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id o46NZQxV017248 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 6 May 2010 18:35:26 -0500 Received: from linux.omap.com (localhost [127.0.0.1]) by dlep35.itg.ti.com (8.13.7/8.13.7) with ESMTP id o46NZN2U005081; Thu, 6 May 2010 18:35:23 -0500 (CDT) Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id 6F0F680630; Thu, 6 May 2010 18:35:22 -0500 (CDT) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dflp51.itg.ti.com (dflp51.itg.ti.com [128.247.22.94]) by linux.omap.com (Postfix) with ESMTP id 873078062A for ; 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Thu, 06 May 2010 23:38:10 +0000 (UTC) diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c index 0bf290b..b705089 100644 --- a/arch/arm/mach-davinci/dma.c +++ b/arch/arm/mach-davinci/dma.c @@ -243,7 +243,7 @@ struct edma { } intr_data[EDMA_MAX_DMACH]; }; -static struct edma *edma_info[EDMA_MAX_CC]; +static struct edma *edma_cc[EDMA_MAX_CC]; static int arch_num_cc; /* dummy param set used to (re)initialize parameter RAM slots */ @@ -261,7 +261,7 @@ static void map_dmach_queue(unsigned ctlr, unsigned ch_no, /* default to low priority queue */ if (queue_no == EVENTQ_DEFAULT) - queue_no = edma_info[ctlr]->default_queue; + queue_no = edma_cc[ctlr]->default_queue; queue_no &= 7; edma_modify_array(ctlr, EDMA_DMAQNUM, (ch_no >> 3), @@ -315,8 +315,8 @@ setup_dma_interrupt(unsigned lch, (1 << (lch & 0x1f))); } - edma_info[ctlr]->intr_data[lch].callback = callback; - edma_info[ctlr]->intr_data[lch].data = data; + edma_cc[ctlr]->intr_data[lch].callback = callback; + edma_cc[ctlr]->intr_data[lch].data = data; if (callback) { edma_shadow0_write_array(ctlr, SH_ICR, lch >> 5, @@ -328,11 +328,10 @@ setup_dma_interrupt(unsigned lch, static int irq2ctlr(int irq) { - if (irq >= edma_info[0]->irq_res_start && - irq <= edma_info[0]->irq_res_end) + if (irq >= edma_cc[0]->irq_res_start && irq <= edma_cc[0]->irq_res_end) return 0; - else if (irq >= edma_info[1]->irq_res_start && - irq <= edma_info[1]->irq_res_end) + else if (irq >= edma_cc[1]->irq_res_start && + irq <= edma_cc[1]->irq_res_end) return 1; return -1; @@ -377,10 +376,10 @@ static irqreturn_t dma_irq_handler(int irq, void *data) /* Clear the corresponding IPR bits */ edma_shadow0_write_array(ctlr, SH_ICR, j, (1 << i)); - if (edma_info[ctlr]->intr_data[k].callback) { - edma_info[ctlr]->intr_data[k].callback( + if (edma_cc[ctlr]->intr_data[k].callback) { + edma_cc[ctlr]->intr_data[k].callback( k, DMA_COMPLETE, - edma_info[ctlr]->intr_data[k]. + edma_cc[ctlr]->intr_data[k]. data); } } @@ -433,12 +432,12 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data) /* Clear any SER */ edma_shadow0_write_array(ctlr, SH_SECR, j, (1 << i)); - if (edma_info[ctlr]->intr_data[k]. + if (edma_cc[ctlr]->intr_data[k]. callback) { - edma_info[ctlr]->intr_data[k]. + edma_cc[ctlr]->intr_data[k]. callback(k, DMA_CC_ERROR, - edma_info[ctlr]->intr_data + edma_cc[ctlr]->intr_data [k].data); } } @@ -514,9 +513,9 @@ static int reserve_contiguous_slots(int ctlr, unsigned int id, int stop_slot = start_slot; DECLARE_BITMAP(tmp_inuse, EDMA_MAX_PARAMENTRY); - for (i = start_slot; i < edma_info[ctlr]->num_slots; ++i) { + for (i = start_slot; i < edma_cc[ctlr]->num_slots; ++i) { j = EDMA_CHAN_SLOT(i); - if (!test_and_set_bit(j, edma_info[ctlr]->edma_inuse)) { + if (!test_and_set_bit(j, edma_cc[ctlr]->edma_inuse)) { /* Record our current beginning slot */ if (count == num_slots) stop_slot = i; @@ -543,12 +542,12 @@ static int reserve_contiguous_slots(int ctlr, unsigned int id, * of contiguous parameter RAM slots but do not find the exact number * requested as we may reach the total number of parameter RAM slots */ - if (i == edma_info[ctlr]->num_slots) + if (i == edma_cc[ctlr]->num_slots) stop_slot = i; for (j = start_slot; j < stop_slot; j++) if (test_bit(j, tmp_inuse)) - clear_bit(j, edma_info[ctlr]->edma_inuse); + clear_bit(j, edma_cc[ctlr]->edma_inuse); if (count) return -EBUSY; @@ -570,7 +569,7 @@ static int prepare_unused_channel_list(struct device *dev, void *data) (int)pdev->resource[i].start >= 0) { ctlr = EDMA_CTLR(pdev->resource[i].start); clear_bit(EDMA_CHAN_SLOT(pdev->resource[i].start), - edma_info[ctlr]->edma_unused); + edma_cc[ctlr]->edma_unused); } } @@ -644,14 +643,13 @@ int edma_alloc_channel(int channel, for (i = 0; i < arch_num_cc; i++) { channel = 0; for (;;) { - channel = find_next_bit(edma_info[i]-> - edma_unused, - edma_info[i]->num_channels, + channel = find_next_bit(edma_cc[i]->edma_unused, + edma_cc[i]->num_channels, channel); - if (channel == edma_info[i]->num_channels) + if (channel == edma_cc[i]->num_channels) break; if (!test_and_set_bit(channel, - edma_info[i]->edma_inuse)) { + edma_cc[i]->edma_inuse)) { done = 1; ctlr = i; break; @@ -663,9 +661,9 @@ int edma_alloc_channel(int channel, } if (!done) return -ENOMEM; - } else if (channel >= edma_info[ctlr]->num_channels) { + } else if (channel >= edma_cc[ctlr]->num_channels) { return -EINVAL; - } else if (test_and_set_bit(channel, edma_info[ctlr]->edma_inuse)) { + } else if (test_and_set_bit(channel, edma_cc[ctlr]->edma_inuse)) { return -EBUSY; } @@ -706,7 +704,7 @@ void edma_free_channel(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel >= edma_info[ctlr]->num_channels) + if (channel >= edma_cc[ctlr]->num_channels) return; setup_dma_interrupt(channel, NULL, NULL); @@ -714,7 +712,7 @@ void edma_free_channel(unsigned channel) memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(channel), &dummy_paramset, PARM_SIZE); - clear_bit(channel, edma_info[ctlr]->edma_inuse); + clear_bit(channel, edma_cc[ctlr]->edma_inuse); } EXPORT_SYMBOL(edma_free_channel); @@ -738,20 +736,19 @@ int edma_alloc_slot(unsigned ctlr, int slot) slot = EDMA_CHAN_SLOT(slot); if (slot < 0) { - slot = edma_info[ctlr]->num_channels; + slot = edma_cc[ctlr]->num_channels; for (;;) { - slot = find_next_zero_bit(edma_info[ctlr]->edma_inuse, - edma_info[ctlr]->num_slots, slot); - if (slot == edma_info[ctlr]->num_slots) + slot = find_next_zero_bit(edma_cc[ctlr]->edma_inuse, + edma_cc[ctlr]->num_slots, slot); + if (slot == edma_cc[ctlr]->num_slots) return -ENOMEM; - if (!test_and_set_bit(slot, - edma_info[ctlr]->edma_inuse)) + if (!test_and_set_bit(slot, edma_cc[ctlr]->edma_inuse)) break; } - } else if (slot < edma_info[ctlr]->num_channels || - slot >= edma_info[ctlr]->num_slots) { + } else if (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots) { return -EINVAL; - } else if (test_and_set_bit(slot, edma_info[ctlr]->edma_inuse)) { + } else if (test_and_set_bit(slot, edma_cc[ctlr]->edma_inuse)) { return -EBUSY; } @@ -777,13 +774,13 @@ void edma_free_slot(unsigned slot) ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_channels || - slot >= edma_info[ctlr]->num_slots) + if (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots) return; memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), &dummy_paramset, PARM_SIZE); - clear_bit(slot, edma_info[ctlr]->edma_inuse); + clear_bit(slot, edma_cc[ctlr]->edma_inuse); } EXPORT_SYMBOL(edma_free_slot); @@ -821,8 +818,8 @@ int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count) * of slots */ if ((id != EDMA_CONT_PARAMS_ANY) && - (slot < edma_info[ctlr]->num_channels || - slot >= edma_info[ctlr]->num_slots)) + (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots)) return -EINVAL; /* @@ -831,13 +828,13 @@ int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count) * channels */ if (count < 1 || count > - (edma_info[ctlr]->num_slots - edma_info[ctlr]->num_channels)) + (edma_cc[ctlr]->num_slots - edma_cc[ctlr]->num_channels)) return -EINVAL; switch (id) { case EDMA_CONT_PARAMS_ANY: return reserve_contiguous_slots(ctlr, id, count, - edma_info[ctlr]->num_channels); + edma_cc[ctlr]->num_channels); case EDMA_CONT_PARAMS_FIXED_EXACT: case EDMA_CONT_PARAMS_FIXED_NOT_EXACT: return reserve_contiguous_slots(ctlr, id, count, slot); @@ -869,8 +866,8 @@ int edma_free_cont_slots(unsigned slot, int count) ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_channels || - slot >= edma_info[ctlr]->num_slots || + if (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots || count < 1) return -EINVAL; @@ -880,7 +877,7 @@ int edma_free_cont_slots(unsigned slot, int count) memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot_to_free), &dummy_paramset, PARM_SIZE); - clear_bit(slot_to_free, edma_info[ctlr]->edma_inuse); + clear_bit(slot_to_free, edma_cc[ctlr]->edma_inuse); } return 0; @@ -910,7 +907,7 @@ void edma_set_src(unsigned slot, dma_addr_t src_port, ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_slots) { + if (slot < edma_cc[ctlr]->num_slots) { unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot); if (mode) { @@ -948,7 +945,7 @@ void edma_set_dest(unsigned slot, dma_addr_t dest_port, ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_slots) { + if (slot < edma_cc[ctlr]->num_slots) { unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot); if (mode) { @@ -1008,7 +1005,7 @@ void edma_set_src_index(unsigned slot, s16 src_bidx, s16 src_cidx) ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_slots) { + if (slot < edma_cc[ctlr]->num_slots) { edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot, 0xffff0000, src_bidx); edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot, @@ -1034,7 +1031,7 @@ void edma_set_dest_index(unsigned slot, s16 dest_bidx, s16 dest_cidx) ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_slots) { + if (slot < edma_cc[ctlr]->num_slots) { edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot, 0x0000ffff, dest_bidx << 16); edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot, @@ -1081,7 +1078,7 @@ void edma_set_transfer_params(unsigned slot, ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot < edma_info[ctlr]->num_slots) { + if (slot < edma_cc[ctlr]->num_slots) { edma_parm_modify(ctlr, PARM_LINK_BCNTRLD, slot, 0x0000ffff, bcnt_rld << 16); if (sync_mode == ASYNC) @@ -1111,9 +1108,9 @@ void edma_link(unsigned from, unsigned to) ctlr_to = EDMA_CTLR(to); to = EDMA_CHAN_SLOT(to); - if (from >= edma_info[ctlr_from]->num_slots) + if (from >= edma_cc[ctlr_from]->num_slots) return; - if (to >= edma_info[ctlr_to]->num_slots) + if (to >= edma_cc[ctlr_to]->num_slots) return; edma_parm_modify(ctlr_from, PARM_LINK_BCNTRLD, from, 0xffff0000, PARM_OFFSET(to)); @@ -1134,7 +1131,7 @@ void edma_unlink(unsigned from) ctlr = EDMA_CTLR(from); from = EDMA_CHAN_SLOT(from); - if (from >= edma_info[ctlr]->num_slots) + if (from >= edma_cc[ctlr]->num_slots) return; edma_parm_or(ctlr, PARM_LINK_BCNTRLD, from, 0xffff); } @@ -1161,7 +1158,7 @@ void edma_write_slot(unsigned slot, const struct edmacc_param *param) ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot >= edma_info[ctlr]->num_slots) + if (slot >= edma_cc[ctlr]->num_slots) return; memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), param, PARM_SIZE); @@ -1183,7 +1180,7 @@ void edma_read_slot(unsigned slot, struct edmacc_param *param) ctlr = EDMA_CTLR(slot); slot = EDMA_CHAN_SLOT(slot); - if (slot >= edma_info[ctlr]->num_slots) + if (slot >= edma_cc[ctlr]->num_slots) return; memcpy_fromio(param, edmacc_regs_base[ctlr] + PARM_OFFSET(slot), PARM_SIZE); @@ -1208,7 +1205,7 @@ void edma_pause(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel < edma_info[ctlr]->num_channels) { + if (channel < edma_cc[ctlr]->num_channels) { unsigned int mask = (1 << (channel & 0x1f)); edma_shadow0_write_array(ctlr, SH_EECR, channel >> 5, mask); @@ -1229,7 +1226,7 @@ void edma_resume(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel < edma_info[ctlr]->num_channels) { + if (channel < edma_cc[ctlr]->num_channels) { unsigned int mask = (1 << (channel & 0x1f)); edma_shadow0_write_array(ctlr, SH_EESR, channel >> 5, mask); @@ -1255,12 +1252,12 @@ int edma_start(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel < edma_info[ctlr]->num_channels) { + if (channel < edma_cc[ctlr]->num_channels) { int j = channel >> 5; unsigned int mask = (1 << (channel & 0x1f)); /* EDMA channels without event association */ - if (test_bit(channel, edma_info[ctlr]->edma_unused)) { + if (test_bit(channel, edma_cc[ctlr]->edma_unused)) { pr_debug("EDMA: ESR%d %08x\n", j, edma_shadow0_read_array(ctlr, SH_ESR, j)); edma_shadow0_write_array(ctlr, SH_ESR, j, mask); @@ -1301,7 +1298,7 @@ void edma_stop(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel < edma_info[ctlr]->num_channels) { + if (channel < edma_cc[ctlr]->num_channels) { int j = channel >> 5; unsigned int mask = (1 << (channel & 0x1f)); @@ -1340,7 +1337,7 @@ void edma_clean_channel(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel < edma_info[ctlr]->num_channels) { + if (channel < edma_cc[ctlr]->num_channels) { int j = (channel >> 5); unsigned int mask = 1 << (channel & 0x1f); @@ -1368,7 +1365,7 @@ void edma_clear_event(unsigned channel) ctlr = EDMA_CTLR(channel); channel = EDMA_CHAN_SLOT(channel); - if (channel >= edma_info[ctlr]->num_channels) + if (channel >= edma_cc[ctlr]->num_channels) return; if (channel < 32) edma_write(ctlr, EDMA_ECR, 1 << channel); @@ -1423,38 +1420,37 @@ static int __init edma_probe(struct platform_device *pdev) goto fail1; } - edma_info[j] = kmalloc(sizeof(struct edma), GFP_KERNEL); - if (!edma_info[j]) { + edma_cc[j] = kmalloc(sizeof(struct edma), GFP_KERNEL); + if (!edma_cc[j]) { status = -ENOMEM; goto fail1; } - memset(edma_info[j], 0, sizeof(struct edma)); + memset(edma_cc[j], 0, sizeof(struct edma)); - edma_info[j]->num_channels = min_t(unsigned, info[j].n_channel, + edma_cc[j]->num_channels = min_t(unsigned, info[j].n_channel, EDMA_MAX_DMACH); - edma_info[j]->num_slots = min_t(unsigned, info[j].n_slot, + edma_cc[j]->num_slots = min_t(unsigned, info[j].n_slot, EDMA_MAX_PARAMENTRY); - edma_info[j]->num_cc = min_t(unsigned, info[j].n_cc, - EDMA_MAX_CC); + edma_cc[j]->num_cc = min_t(unsigned, info[j].n_cc, EDMA_MAX_CC); - edma_info[j]->default_queue = info[j].default_queue; - if (!edma_info[j]->default_queue) - edma_info[j]->default_queue = EVENTQ_1; + edma_cc[j]->default_queue = info[j].default_queue; + if (!edma_cc[j]->default_queue) + edma_cc[j]->default_queue = EVENTQ_1; dev_dbg(&pdev->dev, "DMA REG BASE ADDR=%p\n", edmacc_regs_base[j]); - for (i = 0; i < edma_info[j]->num_slots; i++) + for (i = 0; i < edma_cc[j]->num_slots; i++) memcpy_toio(edmacc_regs_base[j] + PARM_OFFSET(i), &dummy_paramset, PARM_SIZE); /* Mark all channels as unused */ - memset(edma_info[j]->edma_unused, 0xff, - sizeof(edma_info[j]->edma_unused)); + memset(edma_cc[j]->edma_unused, 0xff, + sizeof(edma_cc[j]->edma_unused)); sprintf(irq_name, "edma%d", j); irq[j] = platform_get_irq_byname(pdev, irq_name); - edma_info[j]->irq_res_start = irq[j]; + edma_cc[j]->irq_res_start = irq[j]; status = request_irq(irq[j], dma_irq_handler, 0, "edma", &pdev->dev); if (status < 0) { @@ -1465,7 +1461,7 @@ static int __init edma_probe(struct platform_device *pdev) sprintf(irq_name, "edma%d_err", j); err_irq[j] = platform_get_irq_byname(pdev, irq_name); - edma_info[j]->irq_res_end = err_irq[j]; + edma_cc[j]->irq_res_end = err_irq[j]; status = request_irq(err_irq[j], dma_ccerr_handler, 0, "edma_error", &pdev->dev); if (status < 0) { @@ -1478,7 +1474,7 @@ static int __init edma_probe(struct platform_device *pdev) * specified. This way, long transfers on the low priority queue * started by the codec engine will not cause audio defects. */ - for (i = 0; i < edma_info[j]->num_channels; i++) + for (i = 0; i < edma_cc[j]->num_channels; i++) map_dmach_queue(j, i, EVENTQ_1); queue_tc_mapping = info[j].queue_tc_mapping; @@ -1541,7 +1537,7 @@ fail1: release_mem_region(r[i]->start, len[i]); if (edmacc_regs_base[i]) iounmap(edmacc_regs_base[i]); - kfree(edma_info[i]); + kfree(edma_cc[i]); } return status; }