From e2b35f3dbfc080f15b72834d08f04f0269dbe9be Mon Sep 17 00:00:00 2001
From: Viresh Kumar <viresh.kumar@st.com>
Date: Wed, 1 Feb 2012 16:12:27 +0530
Subject: dmaengine/dw_dmac: Fix dw_dmac user drivers to adapt to slave_config
changes
There are few existing user drivers of dw_dmac. They will break as soon as we
remove unused fields from struct dw_dma_slave. This patch focuses to fix these
user drivers to use dma_slave_config() routine.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
---
drivers/mmc/host/atmel-mci.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)
(limited to 'drivers/mmc/host/atmel-mci.c')
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index fcfe1eb5acc8..3ba865ddebc4 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -24,6 +24,7 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/stat.h>
+#include <linux/types.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio.h>
@@ -173,6 +174,7 @@ struct atmel_mci {
struct atmel_mci_dma dma;
struct dma_chan *data_chan;
+ struct dma_slave_config dma_conf;
u32 cmd_status;
u32 data_status;
@@ -863,15 +865,16 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
if (data->flags & MMC_DATA_READ) {
direction = DMA_FROM_DEVICE;
- slave_dirn = DMA_DEV_TO_MEM;
+ host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM;
} else {
direction = DMA_TO_DEVICE;
- slave_dirn = DMA_MEM_TO_DEV;
+ host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV;
}
sglen = dma_map_sg(chan->device->dev, data->sg,
data->sg_len, direction);
+ dmaengine_slave_config(chan, &host->dma_conf);
desc = chan->device->device_prep_slave_sg(chan,
data->sg, sglen, slave_dirn,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
@@ -1957,22 +1960,27 @@ static void atmci_configure_dma(struct atmel_mci *host)
if (pdata && find_slave_dev(pdata->dma_slave)) {
dma_cap_mask_t mask;
- setup_dma_addr(pdata->dma_slave,
- host->mapbase + ATMCI_TDR,
- host->mapbase + ATMCI_RDR);
-
/* Try to grab a DMA channel */
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
host->dma.chan =
dma_request_channel(mask, atmci_filter, pdata->dma_slave);
}
- if (!host->dma.chan)
+ if (!host->dma.chan) {
dev_notice(&host->pdev->dev, "DMA not available, using PIO\n");
- else
+ } else {
dev_info(&host->pdev->dev,
"Using %s for DMA transfers\n",
dma_chan_name(host->dma.chan));
+
+ host->dma_conf.src_addr = host->mapbase + ATMCI_RDR;
+ host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ host->dma_conf.src_maxburst = 1;
+ host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR;
+ host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ host->dma_conf.dst_maxburst = 1;
+ host->dma_conf.device_fc = false;
+ }
}
static inline unsigned int atmci_get_version(struct atmel_mci *host)
--
cgit
From 16052827d98fbc13c31ebad560af4bd53e2b4dd5 Mon Sep 17 00:00:00 2001
From: Alexandre Bounine <alexandre.bounine@idt.com>
Date: Thu, 8 Mar 2012 16:11:18 -0500
Subject: dmaengine/dma_slave: introduce inline wrappers
Add inline wrappers for device_prep_slave_sg() and device_prep_dma_cyclic()
interfaces to hide new parameter from current users of affected interfaces.
Convert current users to use new wrappers instead of direct calls.
Suggested by Russell King [https://lkml.org/lkml/2012/2/3/269].
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
---
drivers/mmc/host/atmel-mci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'drivers/mmc/host/atmel-mci.c')
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 3ba865ddebc4..492854b09d89 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -875,7 +875,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
data->sg_len, direction);
dmaengine_slave_config(chan, &host->dma_conf);
- desc = chan->device->device_prep_slave_sg(chan,
+ desc = dmaengine_prep_slave_sg(chan,
data->sg, sglen, slave_dirn,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc)
--
cgit