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Commit 99e27d7d authored by Mayank Rana's avatar Mayank Rana
Browse files

usb: gadget: f_gsi: Add support to enable/disable using TCM MEM 



This change adds support to enable/disable using TCM memory for
USB IN data buffer with RMNET interface.

Change-Id: I27f04c1bc170e06ccbc9c57ef0e9b8f870e4fe97
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent e334d6d2

drivers/usb/gadget/function/f_gsi.c

+43 −2
Original line number Diff line number Diff line
@@ -501,8 +501,8 @@ static int ipa_connect_channels(struct gsi_data_port *d_port) 
	struct ipa_req_chan_out_params ipa_in_channel_out_params;

	struct ipa_req_chan_out_params ipa_out_channel_out_params;



	log_event_dbg("IN: num_bufs:=%zu, buf_len=%zu\n",

		d_port->in_request.num_bufs, d_port->in_request.buf_len);

	if (gsi->prot_id == IPA_USB_RMNET)

		d_port->in_request.use_tcm_mem = gsi->rmnet_use_tcm_mem;



	ret = usb_gsi_ep_op(d_port->in_ep, &d_port->in_request,

			GSI_EP_OP_PREPARE_TRBS);
@@ -512,6 +512,9 @@ static int ipa_connect_channels(struct gsi_data_port *d_port) 
		return ret;

	}



	log_event_dbg("IN: num_bufs:=%zu, buf_len=%zu\n",

		d_port->in_request.num_bufs, d_port->in_request.buf_len);



	ret = usb_gsi_ep_op(d_port->in_ep, &d_port->in_request,

			GSI_EP_OP_STARTXFER);

	if (ret) {
@@ -3797,6 +3800,40 @@ static struct config_item_type gsi_func_ecm_type = { 
	.ct_owner	= THIS_MODULE,

};



static ssize_t gsi_rmnet_use_tcm_mem_show(struct config_item *item, char *page)

{

	struct f_gsi *gsi = to_gsi_opts(item)->gsi;



	return scnprintf(page, PAGE_SIZE, "%s\n",

			gsi->rmnet_use_tcm_mem ? "Enabled" : "Disabled");

}



static ssize_t gsi_rmnet_use_tcm_mem_store(struct config_item *item,

			const char *page, size_t len)

{

	struct f_gsi *gsi = to_gsi_opts(item)->gsi;

	bool enable;



	if (kstrtobool(page, &enable))

		return -EINVAL;



	gsi->rmnet_use_tcm_mem = enable;

	return len;

}

CONFIGFS_ATTR(gsi_, rmnet_use_tcm_mem);



static struct configfs_attribute *gsi_rmnet_attrs[] = {

	&gsi_attr_info,

	&gsi_attr_rmnet_use_tcm_mem,

	NULL,

};



static struct config_item_type gsi_func_rmnet_type = {

	.ct_item_ops	= &gsi_item_ops,

	.ct_attrs	= gsi_rmnet_attrs,

	.ct_owner	= THIS_MODULE,

};



static void gsi_inst_clean(struct gsi_opts *opts)

{

	if (opts->gsi->c_port.cdev.dev) {
@@ -3858,6 +3895,10 @@ static int gsi_set_inst_name(struct usb_function_instance *fi, 
	}

	mutex_unlock(&inst_status[prot_id].gsi_lock);



	if (prot_id == IPA_USB_RMNET)

		config_group_init_type_name(&opts->func_inst.group,

						fi->group.cg_item.ci_name,

						&gsi_func_rmnet_type);

	if (prot_id == IPA_USB_RNDIS)

		config_group_init_type_name(&opts->func_inst.group,

						fi->group.cg_item.ci_name,

drivers/usb/gadget/function/f_gsi.h

+1 −0
Original line number Diff line number Diff line
@@ -312,6 +312,7 @@ struct f_gsi { 
	struct gsi_ctrl_port c_port;

	void *ipc_log_ctxt;

	bool rmnet_dtr_status;

	bool rmnet_use_tcm_mem;



	bool rwake_inprogress;