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dma: mxs-dma: use global stmp_device functionality 

This can get rid of the mach-dependency.

Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Huang Shijie <b32955@freescale.com>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Dong Aisheng 2012-05-04 20:12:15 +08:00 committed by Shawn Guo
parent 6c4d4efb9d
commit f5b7efccdb
2 changed files with 14 additions and 13 deletions
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1
drivers/dma/Kconfig
View File

@ -238,6 +238,7 @@ config IMX_DMA
config MXS_DMA
bool "MXS DMA support"
depends on SOC_IMX23 || SOC_IMX28
select STMP_DEVICE
select DMA_ENGINE
help
Support the MXS DMA engine. This engine including APBH-DMA

26
drivers/dma/mxs-dma.c
View File

@ -23,10 +23,10 @@
#include <linux/dmaengine.h>
#include <linux/delay.h>
#include <linux/fsl/mxs-dma.h>
#include <linux/stmp_device.h>
#include <asm/irq.h>
#include <mach/mxs.h>
#include <mach/common.h>
#include "dmaengine.h"
@ -138,10 +138,10 @@ static void mxs_dma_reset_chan(struct mxs_dma_chan *mxs_chan)
if (dma_is_apbh() && apbh_is_old())
writel(1 << (chan_id + BP_APBH_CTRL0_RESET_CHANNEL),
mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CTRL0 + STMP_OFFSET_REG_SET);
else
writel(1 << (chan_id + BP_APBHX_CHANNEL_CTRL_RESET_CHANNEL),
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + STMP_OFFSET_REG_SET);
}
static void mxs_dma_enable_chan(struct mxs_dma_chan *mxs_chan)
@ -170,10 +170,10 @@ static void mxs_dma_pause_chan(struct mxs_dma_chan *mxs_chan)
/* freeze the channel */
if (dma_is_apbh() && apbh_is_old())
writel(1 << chan_id,
mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CTRL0 + STMP_OFFSET_REG_SET);
else
writel(1 << chan_id,
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + STMP_OFFSET_REG_SET);
mxs_chan->status = DMA_PAUSED;
}
@ -186,10 +186,10 @@ static void mxs_dma_resume_chan(struct mxs_dma_chan *mxs_chan)
/* unfreeze the channel */
if (dma_is_apbh() && apbh_is_old())
writel(1 << chan_id,
mxs_dma->base + HW_APBHX_CTRL0 + MXS_CLR_ADDR);
mxs_dma->base + HW_APBHX_CTRL0 + STMP_OFFSET_REG_CLR);
else
writel(1 << chan_id,
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + MXS_CLR_ADDR);
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + STMP_OFFSET_REG_CLR);
mxs_chan->status = DMA_IN_PROGRESS;
}
@ -220,11 +220,11 @@ static irqreturn_t mxs_dma_int_handler(int irq, void *dev_id)
/* completion status */
stat1 = readl(mxs_dma->base + HW_APBHX_CTRL1);
stat1 &= MXS_DMA_CHANNELS_MASK;
writel(stat1, mxs_dma->base + HW_APBHX_CTRL1 + MXS_CLR_ADDR);
writel(stat1, mxs_dma->base + HW_APBHX_CTRL1 + STMP_OFFSET_REG_CLR);
/* error status */
stat2 = readl(mxs_dma->base + HW_APBHX_CTRL2);
writel(stat2, mxs_dma->base + HW_APBHX_CTRL2 + MXS_CLR_ADDR);
writel(stat2, mxs_dma->base + HW_APBHX_CTRL2 + STMP_OFFSET_REG_CLR);
/*
* When both completion and error of termination bits set at the
@ -567,7 +567,7 @@ static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
if (ret)
return ret;
ret = mxs_reset_block(mxs_dma->base);
ret = stmp_reset_block(mxs_dma->base);
if (ret)
goto err_out;
@ -580,14 +580,14 @@ static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
/* enable apbh burst */
if (dma_is_apbh()) {
writel(BM_APBH_CTRL0_APB_BURST_EN,
mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CTRL0 + STMP_OFFSET_REG_SET);
writel(BM_APBH_CTRL0_APB_BURST8_EN,
mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CTRL0 + STMP_OFFSET_REG_SET);
}
/* enable irq for all the channels */
writel(MXS_DMA_CHANNELS_MASK << MXS_DMA_CHANNELS,
mxs_dma->base + HW_APBHX_CTRL1 + MXS_SET_ADDR);
mxs_dma->base + HW_APBHX_CTRL1 + STMP_OFFSET_REG_SET);
err_out:
clk_disable_unprepare(mxs_dma->clk);