Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 336 deletions

diff --git a/ANDROID_3.4.5/drivers/mmc/host/tmio_mmc_dma.c b/ANDROID_3.4.5/drivers/mmc/host/tmio_mmc_dma.c
deleted file mode 100644
index fff92860..00000000
--- a/ANDROID_3.4.5/drivers/mmc/host/tmio_mmc_dma.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * linux/drivers/mmc/tmio_mmc_dma.c
- *
- * Copyright (C) 2010-2011 Guennadi Liakhovetski
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * DMA function for TMIO MMC implementations
- */
-
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmaengine.h>
-#include <linux/mfd/tmio.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/tmio.h>
-#include <linux/pagemap.h>
-#include <linux/scatterlist.h>
-
-#include "tmio_mmc.h"
-
-#define TMIO_MMC_MIN_DMA_LEN 8
-
-void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
-{
-	if (!host->chan_tx || !host->chan_rx)
-		return;
-
-#if defined(CONFIG_SUPERH) || defined(CONFIG_ARCH_SHMOBILE)
-	/* Switch DMA mode on or off - SuperH specific? */
-	sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
-#endif
-}
-
-void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
-{
-	tmio_mmc_enable_dma(host, false);
-
-	if (host->chan_rx)
-		dmaengine_terminate_all(host->chan_rx);
-	if (host->chan_tx)
-		dmaengine_terminate_all(host->chan_tx);
-
-	tmio_mmc_enable_dma(host, true);
-}
-
-static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
-{
-	struct scatterlist *sg = host->sg_ptr, *sg_tmp;
-	struct dma_async_tx_descriptor *desc = NULL;
-	struct dma_chan *chan = host->chan_rx;
-	struct tmio_mmc_data *pdata = host->pdata;
-	dma_cookie_t cookie;
-	int ret, i;
-	bool aligned = true, multiple = true;
-	unsigned int align = (1 << pdata->dma->alignment_shift) - 1;
-
-	for_each_sg(sg, sg_tmp, host->sg_len, i) {
-		if (sg_tmp->offset & align)
-			aligned = false;
-		if (sg_tmp->length & align) {
-			multiple = false;
-			break;
-		}
-	}
-
-	if ((!aligned && (host->sg_len > 1 || sg->length > PAGE_CACHE_SIZE ||
-			  (align & PAGE_MASK))) || !multiple) {
-		ret = -EINVAL;
-		goto pio;
-	}
-
-	if (sg->length < TMIO_MMC_MIN_DMA_LEN) {
-		host->force_pio = true;
-		return;
-	}
-
-	tmio_mmc_disable_mmc_irqs(host, TMIO_STAT_RXRDY);
-
-	/* The only sg element can be unaligned, use our bounce buffer then */
-	if (!aligned) {
-		sg_init_one(&host->bounce_sg, host->bounce_buf, sg->length);
-		host->sg_ptr = &host->bounce_sg;
-		sg = host->sg_ptr;
-	}
-
-	ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE);
-	if (ret > 0)
-		desc = dmaengine_prep_slave_sg(chan, sg, ret,
-			DMA_DEV_TO_MEM, DMA_CTRL_ACK);
-
-	if (desc) {
-		cookie = dmaengine_submit(desc);
-		if (cookie < 0) {
-			desc = NULL;
-			ret = cookie;
-		}
-	}
-	dev_dbg(&host->pdev->dev, "%s(): mapped %d -> %d, cookie %d, rq %p\n",
-		__func__, host->sg_len, ret, cookie, host->mrq);
-
-pio:
-	if (!desc) {
-		/* DMA failed, fall back to PIO */
-		if (ret >= 0)
-			ret = -EIO;
-		host->chan_rx = NULL;
-		dma_release_channel(chan);
-		/* Free the Tx channel too */
-		chan = host->chan_tx;
-		if (chan) {
-			host->chan_tx = NULL;
-			dma_release_channel(chan);
-		}
-		dev_warn(&host->pdev->dev,
-			 "DMA failed: %d, falling back to PIO\n", ret);
-		tmio_mmc_enable_dma(host, false);
-	}
-
-	dev_dbg(&host->pdev->dev, "%s(): desc %p, cookie %d, sg[%d]\n", __func__,
-		desc, cookie, host->sg_len);
-}
-
-static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host)
-{
-	struct scatterlist *sg = host->sg_ptr, *sg_tmp;
-	struct dma_async_tx_descriptor *desc = NULL;
-	struct dma_chan *chan = host->chan_tx;
-	struct tmio_mmc_data *pdata = host->pdata;
-	dma_cookie_t cookie;
-	int ret, i;
-	bool aligned = true, multiple = true;
-	unsigned int align = (1 << pdata->dma->alignment_shift) - 1;
-
-	for_each_sg(sg, sg_tmp, host->sg_len, i) {
-		if (sg_tmp->offset & align)
-			aligned = false;
-		if (sg_tmp->length & align) {
-			multiple = false;
-			break;
-		}
-	}
-
-	if ((!aligned && (host->sg_len > 1 || sg->length > PAGE_CACHE_SIZE ||
-			  (align & PAGE_MASK))) || !multiple) {
-		ret = -EINVAL;
-		goto pio;
-	}
-
-	if (sg->length < TMIO_MMC_MIN_DMA_LEN) {
-		host->force_pio = true;
-		return;
-	}
-
-	tmio_mmc_disable_mmc_irqs(host, TMIO_STAT_TXRQ);
-
-	/* The only sg element can be unaligned, use our bounce buffer then */
-	if (!aligned) {
-		unsigned long flags;
-		void *sg_vaddr = tmio_mmc_kmap_atomic(sg, &flags);
-		sg_init_one(&host->bounce_sg, host->bounce_buf, sg->length);
-		memcpy(host->bounce_buf, sg_vaddr, host->bounce_sg.length);
-		tmio_mmc_kunmap_atomic(sg, &flags, sg_vaddr);
-		host->sg_ptr = &host->bounce_sg;
-		sg = host->sg_ptr;
-	}
-
-	ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE);
-	if (ret > 0)
-		desc = dmaengine_prep_slave_sg(chan, sg, ret,
-			DMA_MEM_TO_DEV, DMA_CTRL_ACK);
-
-	if (desc) {
-		cookie = dmaengine_submit(desc);
-		if (cookie < 0) {
-			desc = NULL;
-			ret = cookie;
-		}
-	}
-	dev_dbg(&host->pdev->dev, "%s(): mapped %d -> %d, cookie %d, rq %p\n",
-		__func__, host->sg_len, ret, cookie, host->mrq);
-
-pio:
-	if (!desc) {
-		/* DMA failed, fall back to PIO */
-		if (ret >= 0)
-			ret = -EIO;
-		host->chan_tx = NULL;
-		dma_release_channel(chan);
-		/* Free the Rx channel too */
-		chan = host->chan_rx;
-		if (chan) {
-			host->chan_rx = NULL;
-			dma_release_channel(chan);
-		}
-		dev_warn(&host->pdev->dev,
-			 "DMA failed: %d, falling back to PIO\n", ret);
-		tmio_mmc_enable_dma(host, false);
-	}
-
-	dev_dbg(&host->pdev->dev, "%s(): desc %p, cookie %d\n", __func__,
-		desc, cookie);
-}
-
-void tmio_mmc_start_dma(struct tmio_mmc_host *host,
-			       struct mmc_data *data)
-{
-	if (data->flags & MMC_DATA_READ) {
-		if (host->chan_rx)
-			tmio_mmc_start_dma_rx(host);
-	} else {
-		if (host->chan_tx)
-			tmio_mmc_start_dma_tx(host);
-	}
-}
-
-static void tmio_mmc_issue_tasklet_fn(unsigned long priv)
-{
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)priv;
-	struct dma_chan *chan = NULL;
-
-	spin_lock_irq(&host->lock);
-
-	if (host && host->data) {
-		if (host->data->flags & MMC_DATA_READ)
-			chan = host->chan_rx;
-		else
-			chan = host->chan_tx;
-	}
-
-	spin_unlock_irq(&host->lock);
-
-	tmio_mmc_enable_mmc_irqs(host, TMIO_STAT_DATAEND);
-
-	if (chan)
-		dma_async_issue_pending(chan);
-}
-
-static void tmio_mmc_tasklet_fn(unsigned long arg)
-{
-	struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
-
-	spin_lock_irq(&host->lock);
-
-	if (!host->data)
-		goto out;
-
-	if (host->data->flags & MMC_DATA_READ)
-		dma_unmap_sg(host->chan_rx->device->dev,
-			     host->sg_ptr, host->sg_len,
-			     DMA_FROM_DEVICE);
-	else
-		dma_unmap_sg(host->chan_tx->device->dev,
-			     host->sg_ptr, host->sg_len,
-			     DMA_TO_DEVICE);
-
-	tmio_mmc_do_data_irq(host);
-out:
-	spin_unlock_irq(&host->lock);
-}
-
-/* It might be necessary to make filter MFD specific */
-static bool tmio_mmc_filter(struct dma_chan *chan, void *arg)
-{
-	dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg);
-	chan->private = arg;
-	return true;
-}
-
-void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata)
-{
-	/* We can only either use DMA for both Tx and Rx or not use it at all */
-	if (!pdata->dma)
-		return;
-
-	if (!host->chan_tx && !host->chan_rx) {
-		dma_cap_mask_t mask;
-
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
-
-		host->chan_tx = dma_request_channel(mask, tmio_mmc_filter,
-						    pdata->dma->chan_priv_tx);
-		dev_dbg(&host->pdev->dev, "%s: TX: got channel %p\n", __func__,
-			host->chan_tx);
-
-		if (!host->chan_tx)
-			return;
-
-		host->chan_rx = dma_request_channel(mask, tmio_mmc_filter,
-						    pdata->dma->chan_priv_rx);
-		dev_dbg(&host->pdev->dev, "%s: RX: got channel %p\n", __func__,
-			host->chan_rx);
-
-		if (!host->chan_rx)
-			goto ereqrx;
-
-		host->bounce_buf = (u8 *)__get_free_page(GFP_KERNEL | GFP_DMA);
-		if (!host->bounce_buf)
-			goto ebouncebuf;
-
-		tasklet_init(&host->dma_complete, tmio_mmc_tasklet_fn, (unsigned long)host);
-		tasklet_init(&host->dma_issue, tmio_mmc_issue_tasklet_fn, (unsigned long)host);
-	}
-
-	tmio_mmc_enable_dma(host, true);
-
-	return;
-
-ebouncebuf:
-	dma_release_channel(host->chan_rx);
-	host->chan_rx = NULL;
-ereqrx:
-	dma_release_channel(host->chan_tx);
-	host->chan_tx = NULL;
-}
-
-void tmio_mmc_release_dma(struct tmio_mmc_host *host)
-{
-	if (host->chan_tx) {
-		struct dma_chan *chan = host->chan_tx;
-		host->chan_tx = NULL;
-		dma_release_channel(chan);
-	}
-	if (host->chan_rx) {
-		struct dma_chan *chan = host->chan_rx;
-		host->chan_rx = NULL;
-		dma_release_channel(chan);
-	}
-	if (host->bounce_buf) {
-		free_pages((unsigned long)host->bounce_buf, 0);
-		host->bounce_buf = NULL;
-	}
-}