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HID: intel-ish-hid: Add interface function for PCI device pointer 

Instead of directly accessing PCI device poitner via struct ishtp_cl,
create interface function for same. This is required for DMA transfer.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Srinivas Pandruvada 2019-03-18 12:14:28 -07:00 committed by Jiri Kosina
parent 29b06d12ba
commit 0e568a16af
2 changed files with 15 additions and 0 deletions
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13
drivers/hid/intel-ish-hid/ishtp/bus.c
View File

@ -855,6 +855,19 @@ struct device *ishtp_device(struct ishtp_cl_device *device)
}
EXPORT_SYMBOL(ishtp_device);
/**
* ishtp_get_pci_device() - Return PCI device dev pointer
* This interface is used to return PCI device pointer
* from ishtp_cl_device instance.
*
* Return: device *.
*/
struct device *ishtp_get_pci_device(struct ishtp_cl_device *device)
{
return device->ishtp_dev->devc;
}
EXPORT_SYMBOL(ishtp_get_pci_device);
/**
* ishtp_trace_callback() - Return trace callback
*

2
include/linux/intel-ish-client-if.h
View File

@ -77,6 +77,8 @@ int ishtp_register_event_cb(struct ishtp_cl_device *device,
struct device *ishtp_device(struct ishtp_cl_device *cl_device);
/* Trace interface for clients */
void *ishtp_trace_callback(struct ishtp_cl_device *cl_device);
/* Get device pointer of PCI device for DMA acces */
struct device *ishtp_get_pci_device(struct ishtp_cl_device *cl_device);
struct ishtp_cl *ishtp_cl_allocate(struct ishtp_cl_device *cl_device);
void ishtp_cl_free(struct ishtp_cl *cl);