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dmaengine: dw: platform: provide platform data for Intel 

Provide platform data explicitly for Intel SoCs where dw_dmac is enumerated by
ACPI.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Andy Shevchenko 2015-10-13 20:09:18 +03:00 committed by Vinod Koul
parent 30cb2639aa
commit 175267b389
1 changed files with 16 additions and 1 deletions
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17
drivers/dma/dw/platform.c
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@ -155,6 +155,7 @@ static int dw_probe(struct platform_device *pdev)
struct dw_dma_chip *chip;
struct device *dev = &pdev->dev;
struct resource *mem;
const struct acpi_device_id *id;
struct dw_dma_platform_data *pdata;
int err;
@ -178,6 +179,11 @@ static int dw_probe(struct platform_device *pdev)
pdata = dev_get_platdata(dev);
if (!pdata)
pdata = dw_dma_parse_dt(pdev);
if (!pdata && has_acpi_companion(dev)) {
id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (id)
pdata = (struct dw_dma_platform_data *)id->driver_data;
}
chip->dev = dev;
@ -246,8 +252,17 @@ MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);
#endif
#ifdef CONFIG_ACPI
static struct dw_dma_platform_data dw_dma_acpi_pdata = {
.nr_channels = 8,
.is_private = true,
.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
.chan_priority = CHAN_PRIORITY_ASCENDING,
.block_size = 4095,
.nr_masters = 2,
};
static const struct acpi_device_id dw_dma_acpi_id_table[] = {
{ "INTL9C60", 0 },
{ "INTL9C60", (kernel_ulong_t)&dw_dma_acpi_pdata },
{ }
};
MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);