Commit ae923c91 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
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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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20190820131546.75744-4-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 4b8584ba

drivers/dma/dw/internal.h

+28 −0
Original line number Diff line number Diff line
@@ -23,4 +23,32 @@ int do_dw_dma_enable(struct dw_dma_chip *chip); 


extern bool dw_dma_filter(struct dma_chan *chan, void *param);



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,

};



#endif /* _DMA_DW_INTERNAL_H */

drivers/dma/dw/pci.c

+16 −44
Original line number Diff line number Diff line
@@ -12,38 +12,10 @@ 


#include "internal.h"



struct dw_dma_pci_data {

	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 const struct dw_dma_pci_data dw_pci_data = {

	.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 const struct dw_dma_pci_data idma32_pci_data = {

	.pdata = &idma32_pdata,

	.probe = idma32_dma_probe,

	.remove = idma32_dma_remove,

};



static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)

{

	const struct dw_dma_pci_data *drv_data = (void *)pid->driver_data;

	struct dw_dma_pci_data *data;

	const struct dw_dma_chip_pdata *drv_data = (void *)pid->driver_data;

	struct dw_dma_chip_pdata *data;

	struct dw_dma_chip *chip;

	int ret;
@@ -95,7 +67,7 @@ static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid) 


static void dw_pci_remove(struct pci_dev *pdev)

{

	struct dw_dma_pci_data *data = pci_get_drvdata(pdev);

	struct dw_dma_chip_pdata *data = pci_get_drvdata(pdev);

	struct dw_dma_chip *chip = data->chip;

	int ret;
@@ -108,7 +80,7 @@ static void dw_pci_remove(struct pci_dev *pdev) 


static int dw_pci_suspend_late(struct device *dev)

{

	struct dw_dma_pci_data *data = dev_get_drvdata(dev);

	struct dw_dma_chip_pdata *data = dev_get_drvdata(dev);

	struct dw_dma_chip *chip = data->chip;



	return do_dw_dma_disable(chip);
@@ -116,7 +88,7 @@ static int dw_pci_suspend_late(struct device *dev) 


static int dw_pci_resume_early(struct device *dev)

{

	struct dw_dma_pci_data *data = dev_get_drvdata(dev);

	struct dw_dma_chip_pdata *data = dev_get_drvdata(dev);

	struct dw_dma_chip *chip = data->chip;



	return do_dw_dma_enable(chip);
@@ -130,29 +102,29 @@ static const struct dev_pm_ops dw_pci_dev_pm_ops = { 


static const struct pci_device_id dw_pci_id_table[] = {

	/* Medfield (GPDMA) */

	{ PCI_VDEVICE(INTEL, 0x0827), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x0827), (kernel_ulong_t)&dw_dma_chip_pdata },



	/* BayTrail */

	{ PCI_VDEVICE(INTEL, 0x0f06), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x0f40), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x0f06), (kernel_ulong_t)&dw_dma_chip_pdata },

	{ PCI_VDEVICE(INTEL, 0x0f40), (kernel_ulong_t)&dw_dma_chip_pdata },



	/* Merrifield */

	{ PCI_VDEVICE(INTEL, 0x11a2), (kernel_ulong_t)&idma32_pci_data },

	{ PCI_VDEVICE(INTEL, 0x11a2), (kernel_ulong_t)&idma32_chip_pdata },



	/* Braswell */

	{ PCI_VDEVICE(INTEL, 0x2286), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x22c0), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x2286), (kernel_ulong_t)&dw_dma_chip_pdata },

	{ PCI_VDEVICE(INTEL, 0x22c0), (kernel_ulong_t)&dw_dma_chip_pdata },



	/* Elkhart Lake iDMA 32-bit (PSE DMA) */

	{ PCI_VDEVICE(INTEL, 0x4bb4), (kernel_ulong_t)&idma32_pci_data },

	{ PCI_VDEVICE(INTEL, 0x4bb5), (kernel_ulong_t)&idma32_pci_data },

	{ PCI_VDEVICE(INTEL, 0x4bb6), (kernel_ulong_t)&idma32_pci_data },

	{ PCI_VDEVICE(INTEL, 0x4bb4), (kernel_ulong_t)&idma32_chip_pdata },

	{ PCI_VDEVICE(INTEL, 0x4bb5), (kernel_ulong_t)&idma32_chip_pdata },

	{ PCI_VDEVICE(INTEL, 0x4bb6), (kernel_ulong_t)&idma32_chip_pdata },



	/* Haswell */

	{ PCI_VDEVICE(INTEL, 0x9c60), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x9c60), (kernel_ulong_t)&dw_dma_chip_pdata },



	/* Broadwell */

	{ PCI_VDEVICE(INTEL, 0x9ce0), (kernel_ulong_t)&dw_pci_data },

	{ PCI_VDEVICE(INTEL, 0x9ce0), (kernel_ulong_t)&dw_dma_chip_pdata },



	{ }

};

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