diff options
Diffstat (limited to 'drivers/dma/dw/internal.h')
| -rw-r--r-- | drivers/dma/dw/internal.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/dma/dw/internal.h b/drivers/dma/dw/internal.h new file mode 100644 index 0000000..32667f9 --- /dev/null +++ b/drivers/dma/dw/internal.h @@ -0,0 +1,70 @@ +/* + * Driver for the Synopsys DesignWare DMA Controller + * + * Copyright (C) 2013 Intel Corporation + * + * 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 _DW_DMAC_INTERNAL_H +#define _DW_DMAC_INTERNAL_H + +#include <linux/device.h> +#include <linux/dw_dmac.h> + +#include "regs.h" + +/** + * struct dw_dma_chip - representation of DesignWare DMA controller hardware + * @dev: struct device of the DMA controller + * @irq: irq line + * @regs: memory mapped I/O space + * @dw: struct dw_dma that is filed by dw_dma_probe() + */ +struct dw_dma_chip { + struct device *dev; + int irq; + void __iomem *regs; + struct dw_dma *dw; +}; + +/* Export to the platform drivers */ +int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata); +int dw_dma_remove(struct dw_dma_chip *chip); + +void dw_dma_shutdown(struct dw_dma_chip *chip); + +#ifdef CONFIG_PM_SLEEP + +int dw_dma_suspend(struct dw_dma_chip *chip); +int dw_dma_resume(struct dw_dma_chip *chip); + +#endif /* CONFIG_PM_SLEEP */ + +/** + * dwc_get_dms - get destination master + * @slave: pointer to the custom slave configuration + * + * Returns destination master in the custom slave configuration if defined, or + * default value otherwise. + */ +static inline unsigned int dwc_get_dms(struct dw_dma_slave *slave) +{ + return slave ? slave->dst_master : 0; +} + +/** + * dwc_get_sms - get source master + * @slave: pointer to the custom slave configuration + * + * Returns source master in the custom slave configuration if defined, or + * default value otherwise. + */ +static inline unsigned int dwc_get_sms(struct dw_dma_slave *slave) +{ + return slave ? slave->src_master : 1; +} + +#endif /* _DW_DMAC_INTERNAL_H */ |
