diff options
| author | Roland Stigge <stigge@antcom.de> | 2012-08-16 15:15:34 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-09-29 14:52:45 +0100 |
| commit | de20c22d2bf41f970a6300a89dd550f12121c126 (patch) | |
| tree | 4a5639e2e07e1808698551573872498eaee443a0 | |
| parent | af69dcd3862ed174cf67637f4142c9c895862436 (diff) | |
mtd: lpc32xx_slc: Make driver independent of AMBA DMA engine driver
This patch makes the SLC NAND driver independent of the single AMBA DMA engine
driver by using the platform data provided dma_filter callback.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/nand/lpc32xx_slc.c | 13 | ||||
| -rw-r--r-- | include/linux/mtd/lpc32xx_slc.h | 20 |
2 files changed, 31 insertions, 2 deletions
diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c index c8c1d06b35ab..184035045208 100644 --- a/drivers/mtd/nand/lpc32xx_slc.c +++ b/drivers/mtd/nand/lpc32xx_slc.c @@ -37,7 +37,7 @@ #include <linux/of.h> #include <linux/of_mtd.h> #include <linux/of_gpio.h> -#include <linux/amba/pl08x.h> +#include <linux/mtd/lpc32xx_slc.h> #define LPC32XX_MODNAME "lpc32xx-nand" @@ -199,6 +199,7 @@ struct lpc32xx_nand_cfg_slc { struct lpc32xx_nand_host { struct nand_chip nand_chip; + struct lpc32xx_slc_platform_data *pdata; struct clk *clk; struct mtd_info mtd; void __iomem *io_base; @@ -719,9 +720,15 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) struct mtd_info *mtd = &host->mtd; dma_cap_mask_t mask; + if (!host->pdata || !host->pdata->dma_filter) { + dev_err(mtd->dev.parent, "no DMA platform data\n"); + return -ENOENT; + } + dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - host->dma_chan = dma_request_channel(mask, pl08x_filter_id, "nand-slc"); + host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter, + "nand-slc"); if (!host->dma_chan) { dev_err(mtd->dev.parent, "Failed to request DMA channel\n"); return -EBUSY; @@ -819,6 +826,8 @@ static int __devinit lpc32xx_nand_probe(struct platform_device *pdev) } lpc32xx_wp_disable(host); + host->pdata = pdev->dev.platform_data; + mtd = &host->mtd; chip = &host->nand_chip; chip->priv = host; diff --git a/include/linux/mtd/lpc32xx_slc.h b/include/linux/mtd/lpc32xx_slc.h new file mode 100644 index 000000000000..1169548a1535 --- /dev/null +++ b/include/linux/mtd/lpc32xx_slc.h @@ -0,0 +1,20 @@ +/* + * Platform data for LPC32xx SoC SLC NAND controller + * + * Copyright © 2012 Roland Stigge + * + * 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. + */ + +#ifndef __LINUX_MTD_LPC32XX_SLC_H +#define __LINUX_MTD_LPC32XX_SLC_H + +#include <linux/dmaengine.h> + +struct lpc32xx_slc_platform_data { + bool (*dma_filter)(struct dma_chan *chan, void *filter_param); +}; + +#endif /* __LINUX_MTD_LPC32XX_SLC_H */ |