Messages in this thread Patch in this message | | | From | Srinivas Pandruvada <> | Subject | [PATCH v2 10/10] HID: intel-ish-hid: Add interface function for PCI device pointer | Date | Mon, 18 Mar 2019 12:14:28 -0700 |
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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> --- drivers/hid/intel-ish-hid/ishtp/bus.c | 13 +++++++++++++ include/linux/intel-ish-client-if.h | 2 ++ 2 files changed, 15 insertions(+)
diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c index 66a485a41481..fb8ca12955b4 100644 --- a/drivers/hid/intel-ish-hid/ishtp/bus.c +++ b/drivers/hid/intel-ish-hid/ishtp/bus.c @@ -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 * diff --git a/include/linux/intel-ish-client-if.h b/include/linux/intel-ish-client-if.h index e98bfbb1e07e..16255c2ca2f4 100644 --- a/include/linux/intel-ish-client-if.h +++ b/include/linux/intel-ish-client-if.h @@ -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); -- 2.17.2
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