Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 14:42:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

mmc: tmio: tmio_mmc_host has .dma

Browse Source 
Current .dma is implemented under tmio_mmc_data.
It goes to tmio_mmc_host by this patch.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Kuninori Morimoto 2015-01-13 04:57:33 +00:00 committed by Ulf Hansson
parent 94b110aff8
commit 7ecc09bab1
4 changed files with 24 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mmc/host/sh_mobile_sdhi.c
View File

@ -213,6 +213,8 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
goto eprobe;
}
host->dma = dma_priv;
mmc_data->clk_enable = sh_mobile_sdhi_clk_enable;
mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
@ -241,8 +243,6 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
dma_priv->alignment_shift = 1; /* 2-byte alignment */
dma_priv->filter = shdma_chan_filter;
mmc_data->dma = dma_priv;
/*
* All SDHI blocks support 2-byte and larger block sizes in 4-bit
* bus width mode.

11
drivers/mmc/host/tmio_mmc.h
View File

@ -40,6 +40,16 @@
struct tmio_mmc_data;
struct tmio_mmc_dma {
void *chan_priv_tx;
void *chan_priv_rx;
int slave_id_tx;
int slave_id_rx;
int alignment_shift;
dma_addr_t dma_rx_offset;
bool (*filter)(struct dma_chan *chan, void *arg);
};
struct tmio_mmc_host {
void __iomem *ctl;
struct mmc_command *cmd;
@ -59,6 +69,7 @@ struct tmio_mmc_host {
struct platform_device *pdev;
struct tmio_mmc_data *pdata;
struct tmio_mmc_dma *dma;
/* DMA support */
bool force_pio;

24
drivers/mmc/host/tmio_mmc_dma.c
View File

@ -49,11 +49,10 @@ 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;
unsigned int align = (1 << host->dma->alignment_shift) - 1;
for_each_sg(sg, sg_tmp, host->sg_len, i) {
if (sg_tmp->offset & align)
@ -126,11 +125,10 @@ 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;
unsigned int align = (1 << host->dma->alignment_shift) - 1;
for_each_sg(sg, sg_tmp, host->sg_len, i) {
if (sg_tmp->offset & align)
@ -262,8 +260,8 @@ out:
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 || (!host->pdev->dev.of_node &&
(!pdata->dma->chan_priv_tx || !pdata->dma->chan_priv_rx)))
if (!host->dma || (!host->pdev->dev.of_node &&
(!host->dma->chan_priv_tx || !host->dma->chan_priv_rx)))
return;
if (!host->chan_tx && !host->chan_rx) {
@ -280,7 +278,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
dma_cap_set(DMA_SLAVE, mask);
host->chan_tx = dma_request_slave_channel_compat(mask,
pdata->dma->filter, pdata->dma->chan_priv_tx,
host->dma->filter, host->dma->chan_priv_tx,
&host->pdev->dev, "tx");
dev_dbg(&host->pdev->dev, "%s: TX: got channel %p\n", __func__,
host->chan_tx);
@ -288,8 +286,8 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
if (!host->chan_tx)
return;
if (pdata->dma->chan_priv_tx)
cfg.slave_id = pdata->dma->slave_id_tx;
if (host->dma->chan_priv_tx)
cfg.slave_id = host->dma->slave_id_tx;
cfg.direction = DMA_MEM_TO_DEV;
cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->pdata->bus_shift);
cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
@ -299,7 +297,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
goto ecfgtx;
host->chan_rx = dma_request_slave_channel_compat(mask,
pdata->dma->filter, pdata->dma->chan_priv_rx,
host->dma->filter, host->dma->chan_priv_rx,
&host->pdev->dev, "rx");
dev_dbg(&host->pdev->dev, "%s: RX: got channel %p\n", __func__,
host->chan_rx);
@ -307,10 +305,10 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
if (!host->chan_rx)
goto ereqrx;
if (pdata->dma->chan_priv_rx)
cfg.slave_id = pdata->dma->slave_id_rx;
if (host->dma->chan_priv_rx)
cfg.slave_id = host->dma->slave_id_rx;
cfg.direction = DMA_DEV_TO_MEM;
cfg.src_addr = cfg.dst_addr + pdata->dma->dma_rx_offset;
cfg.src_addr = cfg.dst_addr + host->dma->dma_rx_offset;
cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
cfg.dst_addr = 0;
ret = dmaengine_slave_config(host->chan_rx, &cfg);

11
include/linux/mfd/tmio.h
View File

@ -112,16 +112,6 @@ void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state);
struct dma_chan;
struct tmio_mmc_dma {
void *chan_priv_tx;
void *chan_priv_rx;
int slave_id_tx;
int slave_id_rx;
int alignment_shift;
dma_addr_t dma_rx_offset;
bool (*filter)(struct dma_chan *chan, void *arg);
};
struct tmio_mmc_host;
/*
@ -134,7 +124,6 @@ struct tmio_mmc_data {
unsigned long flags;
unsigned long bus_shift;
u32 ocr_mask; /* available voltages */
struct tmio_mmc_dma *dma;
unsigned int cd_gpio;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);