diff options
Diffstat (limited to 'drivers/dma/dw/internal.h')
| -rw-r--r-- | drivers/dma/dw/internal.h | 131 |
1 files changed, 81 insertions, 50 deletions
diff --git a/drivers/dma/dw/internal.h b/drivers/dma/dw/internal.h index 32667f9e0dda..f1bd06a20cd6 100644 --- a/drivers/dma/dw/internal.h +++ b/drivers/dma/dw/internal.h @@ -1,70 +1,101 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * 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 +#ifndef _DMA_DW_INTERNAL_H +#define _DMA_DW_INTERNAL_H -#include <linux/device.h> -#include <linux/dw_dmac.h> +#include <linux/dma/dw.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; -}; +int do_dma_probe(struct dw_dma_chip *chip); +int do_dma_remove(struct dw_dma_chip *chip); -/* 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 do_dw_dma_on(struct dw_dma *dw); +void do_dw_dma_off(struct dw_dma *dw); -void dw_dma_shutdown(struct dw_dma_chip *chip); +int do_dw_dma_disable(struct dw_dma_chip *chip); +int do_dw_dma_enable(struct dw_dma_chip *chip); -#ifdef CONFIG_PM_SLEEP +extern bool dw_dma_filter(struct dma_chan *chan, void *param); -int dw_dma_suspend(struct dw_dma_chip *chip); -int dw_dma_resume(struct dw_dma_chip *chip); +#ifdef CONFIG_ACPI +void dw_dma_acpi_controller_register(struct dw_dma *dw); +void dw_dma_acpi_controller_free(struct dw_dma *dw); +#else /* !CONFIG_ACPI */ +static inline void dw_dma_acpi_controller_register(struct dw_dma *dw) {} +static inline void dw_dma_acpi_controller_free(struct dw_dma *dw) {} +#endif /* !CONFIG_ACPI */ -#endif /* CONFIG_PM_SLEEP */ +struct platform_device; -/** - * 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) +#ifdef CONFIG_OF +struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev); +void dw_dma_of_controller_register(struct dw_dma *dw); +void dw_dma_of_controller_free(struct dw_dma *dw); +#else +static inline struct dw_dma_platform_data *dw_dma_parse_dt(struct platform_device *pdev) { - return slave ? slave->dst_master : 0; + return NULL; } +static inline void dw_dma_of_controller_register(struct dw_dma *dw) {} +static inline void dw_dma_of_controller_free(struct dw_dma *dw) {} +#endif -/** - * 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; -} +struct dw_dma_chip_pdata { + const struct dw_dma_platform_data *pdata; + int (*probe)(struct dw_dma_chip *chip); + int (*remove)(struct dw_dma_chip *chip); + struct dw_dma_chip *chip; + u8 m_master; + u8 p_master; +}; + +static __maybe_unused const struct dw_dma_chip_pdata dw_dma_chip_pdata = { + .probe = dw_dma_probe, + .remove = dw_dma_remove, + .m_master = 0, + .p_master = 1, +}; + +static const struct dw_dma_platform_data idma32_pdata = { + .nr_channels = 8, + .chan_allocation_order = CHAN_ALLOCATION_ASCENDING, + .chan_priority = CHAN_PRIORITY_ASCENDING, + .block_size = 131071, + .nr_masters = 1, + .data_width = {4}, + .multi_block = {1, 1, 1, 1, 1, 1, 1, 1}, +}; + +static __maybe_unused const struct dw_dma_chip_pdata idma32_chip_pdata = { + .pdata = &idma32_pdata, + .probe = idma32_dma_probe, + .remove = idma32_dma_remove, + .m_master = 0, + .p_master = 0, +}; + +static const struct dw_dma_platform_data xbar_pdata = { + .nr_channels = 8, + .chan_allocation_order = CHAN_ALLOCATION_ASCENDING, + .chan_priority = CHAN_PRIORITY_ASCENDING, + .block_size = 131071, + .nr_masters = 1, + .data_width = {4}, + .quirks = DW_DMA_QUIRK_XBAR_PRESENT, +}; + +static __maybe_unused const struct dw_dma_chip_pdata xbar_chip_pdata = { + .pdata = &xbar_pdata, + .probe = idma32_dma_probe, + .remove = idma32_dma_remove, + .m_master = 0, + .p_master = 0, +}; -#endif /* _DW_DMAC_INTERNAL_H */ +#endif /* _DMA_DW_INTERNAL_H */ |