Commit f7c799e9 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul

dmaengine: dw: we do support Merrifield SoC in PCI mode

Intel Merrifield platform contains Intel integrated DMA (iDMA 32-bit) which has
a slightly different register mapping, e.g. some bits in CTL_* and CFG_*
channel registers, and has to use platform data since there is no
autoconfiguration.

The iDMA 32-bit specification is available in the publicly available
documentation for Intel Braswell and BayTrail SoCs as LPE Audio DMA.
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 199244d6
...@@ -15,6 +15,18 @@ ...@@ -15,6 +15,18 @@
#include "internal.h" #include "internal.h"
static struct dw_dma_platform_data mrfld_pdata = {
.nr_channels = 8,
.is_private = true,
.is_memcpy = true,
.is_idma32 = true,
.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
.chan_priority = CHAN_PRIORITY_ASCENDING,
.block_size = 131071,
.nr_masters = 1,
.data_width = {4},
};
static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid) static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
{ {
const struct dw_dma_platform_data *pdata = (void *)pid->driver_data; const struct dw_dma_platform_data *pdata = (void *)pid->driver_data;
...@@ -103,6 +115,9 @@ static const struct pci_device_id dw_pci_id_table[] = { ...@@ -103,6 +115,9 @@ static const struct pci_device_id dw_pci_id_table[] = {
{ PCI_VDEVICE(INTEL, 0x0f06) }, { PCI_VDEVICE(INTEL, 0x0f06) },
{ PCI_VDEVICE(INTEL, 0x0f40) }, { PCI_VDEVICE(INTEL, 0x0f40) },
/* Merrifield iDMA 32-bit (GPDMA) */
{ PCI_VDEVICE(INTEL, 0x11a2), (kernel_ulong_t)&mrfld_pdata },
/* Braswell */ /* Braswell */
{ PCI_VDEVICE(INTEL, 0x2286) }, { PCI_VDEVICE(INTEL, 0x2286) },
{ PCI_VDEVICE(INTEL, 0x22c0) }, { PCI_VDEVICE(INTEL, 0x22c0) },
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment