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staging: most: core: add configfs interface functions

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

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2019-04-03 15:19:46 +02:00 committed by Greg Kroah-Hartman
parent dfee92dd50
commit 3d89b2731b
2 changed files with 157 additions and 1 deletions
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142
drivers/staging/most/core.c
View File

@ -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);

16
drivers/staging/most/core.h
View File

@ -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_ */