Commit 3d89b273 authored by Christian Gromm's avatar Christian Gromm Committed by Greg Kroah-Hartman
Browse files

staging: most: core: add configfs interface functions 



This patch adds the core's interface to configfs file.

Signed-off-by: default avatarChristian Gromm <christian.gromm@microchip.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dfee92dd

drivers/staging/most/core.c

+142 −0
Original line number Diff line number Diff line
@@ -783,6 +783,127 @@ static ssize_t add_link_store(struct device_driver *drv, 
	return len;

}



int most_set_cfg_buffer_size(char *mdev, char *mdev_ch, u16 val)

{

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	c->cfg.buffer_size = val;

	return 0;

}



int most_set_cfg_subbuffer_size(char *mdev, char *mdev_ch, u16 val)

{

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	c->cfg.subbuffer_size = val;

	return 0;

}



int most_set_cfg_dbr_size(char *mdev, char *mdev_ch, u16 val)

{

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	c->cfg.dbr_size = val;

	return 0;

}



int most_set_cfg_num_buffers(char *mdev, char *mdev_ch, u16 val)

{

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	c->cfg.num_buffers = val;

	return 0;

}



int most_set_cfg_datatype(char *mdev, char *mdev_ch, char *buf)

{

	int i;

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	for (i = 0; i < ARRAY_SIZE(ch_data_type); i++) {

		if (!strcmp(buf, ch_data_type[i].name)) {

			c->cfg.data_type = ch_data_type[i].most_ch_data_type;

			break;

		}

	}



	if (i == ARRAY_SIZE(ch_data_type))

		pr_info("WARN: invalid attribute settings\n");

	return 0;

}



int most_set_cfg_direction(char *mdev, char *mdev_ch, char *buf)

{

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	if (!strcmp(buf, "dir_rx\n")) {

		c->cfg.direction = MOST_CH_RX;

	} else if (!strcmp(buf, "rx\n")) {

		c->cfg.direction = MOST_CH_RX;

	} else if (!strcmp(buf, "dir_tx\n")) {

		c->cfg.direction = MOST_CH_TX;

	} else if (!strcmp(buf, "tx\n")) {

		c->cfg.direction = MOST_CH_TX;

	} else {

		pr_info("Invalid direction\n");

		return -ENODATA;

	}

	return 0;

}



int most_set_cfg_packets_xact(char *mdev, char *mdev_ch, u16 val)

{

	struct most_channel *c = get_channel(mdev, mdev_ch);



	if (!c)

		return -ENODEV;

	c->cfg.packets_per_xact = val;

	return 0;

}



int most_cfg_complete(char *comp_name)

{

	struct core_component *comp;



	comp = match_component(comp_name);

	if (!comp)

		return -ENODEV;



	return comp->cfg_complete();

}



int most_add_link(char *mdev, char *mdev_ch, char *comp_name, char *link_name,

		  char *comp_param)

{

	struct most_channel *c;

	struct core_component *comp;

	char buf[STRING_SIZE];



	comp = match_component(comp_name);

	if (!comp)

		return -ENODEV;

	if (!comp_param || *comp_param == 0) {

		snprintf(buf, sizeof(buf), "%s-%s", mdev, mdev_ch);

		comp_param = buf;

	}

	c = get_channel(mdev, mdev_ch);

	if (!c)

		return -ENODEV;



	return link_channel_to_component(c, comp, link_name, comp_param);

}

/**

 * remove_link_store - store function for remove_link attribute

 * @drv: device driver
@@ -825,6 +946,27 @@ static ssize_t remove_link_store(struct device_driver *drv, 
	return len;

}



int most_remove_link(char *mdev, char *mdev_ch, char *comp_name)

{

	struct most_channel *c;

	struct core_component *comp;



	comp = match_component(comp_name);

	if (!comp)

		return -ENODEV;

	c = get_channel(mdev, mdev_ch);

	if (!c)

		return -ENODEV;



	if (comp->disconnect_channel(c->iface, c->channel_id))

		return -EIO;

	if (c->pipe0.comp == comp)

		c->pipe0.comp = NULL;

	if (c->pipe1.comp == comp)

		c->pipe1.comp = NULL;

	return 0;

}



#define DRV_ATTR(_name)  (&driver_attr_##_name.attr)



static DRIVER_ATTR_RO(links);

drivers/staging/most/core.h

+15 −1
Original line number Diff line number Diff line
@@ -272,6 +272,7 @@ struct core_component { 
				  int channel_idx);

	int (*rx_completion)(struct mbo *mbo);

	int (*tx_completion)(struct most_interface *iface, int channel_idx);

	int (*cfg_complete)(void);

};



/**
@@ -319,5 +320,18 @@ int most_start_channel(struct most_interface *iface, int channel_idx, 
		       struct core_component *comp);

int most_stop_channel(struct most_interface *iface, int channel_idx,

		      struct core_component *comp);



int __init configfs_init(void);

int most_register_configfs_subsys(struct core_component *comp);

void most_deregister_configfs_subsys(struct core_component *comp);

int most_add_link(char *mdev, char *mdev_ch, char *comp_name, char *link_name,

		  char *comp_param);

int most_remove_link(char *mdev, char *mdev_ch, char *comp_name);

int most_set_cfg_buffer_size(char *mdev, char *mdev_ch, u16 val);

int most_set_cfg_subbuffer_size(char *mdev, char *mdev_ch, u16 val);

int most_set_cfg_dbr_size(char *mdev, char *mdev_ch, u16 val);

int most_set_cfg_num_buffers(char *mdev, char *mdev_ch, u16 val);

int most_set_cfg_datatype(char *mdev, char *mdev_ch, char *buf);

int most_set_cfg_direction(char *mdev, char *mdev_ch, char *buf);

int most_set_cfg_packets_xact(char *mdev, char *mdev_ch, u16 val);

int most_cfg_complete(char *comp_name);

#endif /* MOST_CORE_H_ */