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OpenCloudOS-Kernel/drivers/dma/dw/internal.h

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dmaengine: dw: convert to SPDX identifiers This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07 19:07:41 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
dma: dw: split driver to library part and platform code To simplify the driver development let's split driver to library and platform code parts. It helps us to add PCI driver in future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [Fixed compile error and few checkpatch issues] Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-06-05 20:26:45 +08:00
/*
* Driver for the Synopsys DesignWare DMA Controller
*
* Copyright (C) 2013 Intel Corporation
*/
dmaengine: dw: export probe()/remove() and Co to users The driver library functions can be used directly by the compound devices such as ADSP or serial driver where DesignWare DMA IP is privately attached to the main hardware. Instead of creating a new platform device leaf they may call dw_dma_probe() with given struct dw_dma_chip directly and make sure that the main device is DMA capable. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-09-23 22:18:15 +08:00
#ifndef _DMA_DW_INTERNAL_H
#define _DMA_DW_INTERNAL_H
dmaengine: dw: split dma-dw.h to platform and private parts The introduced include/linux/dma/dw.h is going to contain the private extensions and structures which are shared for dw_dmac users in the kernel. Meanwhile include/linux/platform_data/dma-dw.h keeps only platform related data types and definitions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-09-23 22:18:11 +08:00
#include <linux/dma/dw.h>
dma: dw: split driver to library part and platform code To simplify the driver development let's split driver to library and platform code parts. It helps us to add PCI driver in future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [Fixed compile error and few checkpatch issues] Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-06-05 20:26:45 +08:00
#include "regs.h"
dmaengine: dw: Split DW and iDMA 32-bit operations Here is a kinda big refactoring that should have been done in the first place, when Intel iDMA 32-bit support appeared. It splits operations which are different to Synopsys DesignWare and Intel iDMA 32-bit controllers. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-01-07 19:07:38 +08:00
int do_dma_probe(struct dw_dma_chip *chip);
int do_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);
int do_dw_dma_disable(struct dw_dma_chip *chip);
int do_dw_dma_enable(struct dw_dma_chip *chip);
dma: dw: split driver to library part and platform code To simplify the driver development let's split driver to library and platform code parts. It helps us to add PCI driver in future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [Fixed compile error and few checkpatch issues] Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-06-05 20:26:45 +08:00
dmaengine: dw: introduce generic filter function The introduced filter function would be reused in the ACPI and DT cases since in those cases we have to apply mandatory data to the requested channel. Thus, patch moves platform driver to use it in that case. The function unlikely can't be used by users of the driver due to an implicit dependency to the dw_dmac_core module. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-08-20 01:29:16 +08:00
extern bool dw_dma_filter(struct dma_chan *chan, void *param);
dma: dw: split driver to library part and platform code To simplify the driver development let's split driver to library and platform code parts. It helps us to add PCI driver in future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [Fixed compile error and few checkpatch issues] Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-06-05 20:26:45 +08:00
dmaengine: dw: platform: Split ACPI helpers to separate module For better maintenance split ACPI helpers to the separate module. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190820131546.75744-10-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-08-20 21:15:45 +08:00
#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 */
dmaengine: dw: platform: Split OF helpers to separate module For better maintenance split OF helpers to the separate module. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190820131546.75744-11-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-08-20 21:15:46 +08:00
struct platform_device;
#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 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
dmaengine: dw: Export struct dw_dma_chip_pdata for wider use We are expecting some devices can be enumerated either as PCI or ACPI. Nevertheless, they will share same information, thus, provide a generic struct dw_dma_chip_pdata for all glue drivers. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190820131546.75744-4-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-08-20 21:15:39 +08:00
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;
};
static __maybe_unused const struct dw_dma_chip_pdata dw_dma_chip_pdata = {
.probe = dw_dma_probe,
.remove = dw_dma_remove,
};
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,
};
dmaengine: dw: Program xBAR hardware for Elkhart Lake Intel Elkhart Lake PSE DMA implementation is integrated with crossbar IP in order to serve more hardware than there are DMA request lines available. Due to this, program xBAR hardware to make flexible support of PSE peripheral. The Device-to-Device has not been tested and it's not supported by DMA Engine, but it's left in the code for the sake of documenting hardware features. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210712113940.42753-1-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-07-12 19:39:40 +08:00
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,
};
dmaengine: dw: export probe()/remove() and Co to users The driver library functions can be used directly by the compound devices such as ADSP or serial driver where DesignWare DMA IP is privately attached to the main hardware. Instead of creating a new platform device leaf they may call dw_dma_probe() with given struct dw_dma_chip directly and make sure that the main device is DMA capable. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-09-23 22:18:15 +08:00
#endif /* _DMA_DW_INTERNAL_H */