Currently userspace knows about the rapuyama version by
checking, which gpios have been exported. This does no
longer work with kernel based power management, so export
a sysfs file, which provides the rapuyama generation. Also
export a link to the nokia-modem, so that userspace can
easily check if kernel based PM is used.
Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
---
drivers/hsi/clients/nokia-modem.c | 10 ++++------
drivers/hsi/clients/ssi_protocol.c | 33 ++++++++++++++++++++++++++++++++-
include/linux/hsi/ssi_protocol.h | 11 +++++++++++
3 files changed, 47 insertions(+), 7 deletions(-)
diff --git a/drivers/hsi/clients/nokia-modem.c b/drivers/hsi/clients/nokia-modem.c
index 6485f4c61092..1b4a250cf113 100644
--- a/drivers/hsi/clients/nokia-modem.c
+++ b/drivers/hsi/clients/nokia-modem.c
@@ -35,11 +35,6 @@ module_param(pm, int, 0400);
MODULE_PARM_DESC(pm,
"Enable power management (0=disabled, 1=userland based [default], 2=kernel based)");
-enum nokia_modem_type {
- RAPUYAMA_V1,
- RAPUYAMA_V2,
-};
-
struct nokia_modem_device {
struct tasklet_struct nokia_modem_rst_ind_tasklet;
int nokia_modem_rst_ind_irq;
@@ -285,6 +280,7 @@ static int nokia_modem_probe(struct device *dev)
struct hsi_port *port = hsi_get_port(cl);
int irq, pflags, err;
struct hsi_board_info ssip;
+ struct ssi_protocol_platform_data ssip_pdata;
struct hsi_board_info cmtspeech;
np = dev->of_node;
@@ -340,7 +336,9 @@ static int nokia_modem_probe(struct device *dev)
ssip.name = "ssi-protocol";
ssip.tx_cfg = cl->tx_cfg;
ssip.rx_cfg = cl->rx_cfg;
- ssip.platform_data = NULL;
+ ssip_pdata.type = modem->type;
+ ssip_pdata.nokia_modem_dev = dev;
+ ssip.platform_data = &ssip_pdata;
ssip.archdata = NULL;
modem->ssi_protocol = hsi_new_client(port, &ssip);
diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c
index cee33cab889e..3fb5b98b2c63 100644
--- a/drivers/hsi/clients/ssi_protocol.c
+++ b/drivers/hsi/clients/ssi_protocol.c
@@ -154,6 +154,7 @@ struct ssi_protocol {
int channel_id_cmd;
int channel_id_data;
struct blocking_notifier_head modem_state_notifier;
+ enum nokia_modem_type modem_type;
};
/* List of ssi protocol instances */
@@ -1080,10 +1081,20 @@ static void ssip_pn_setup(struct net_device *dev)
dev->header_ops = &phonet_header_ops;
}
+static ssize_t show_rapuyama_version(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct hsi_client *cl = to_hsi_client(dev);
+ struct ssi_protocol *ssi = hsi_client_drvdata(cl);
+
+ return sprintf(buf, "%d", ssi->modem_type);
+}
+static DEVICE_ATTR(rapuyama_version, S_IRUGO, show_rapuyama_version, 0);
+
static int ssi_protocol_probe(struct device *dev)
{
static const char ifname[] = "phonet%d";
struct hsi_client *cl = to_hsi_client(dev);
+ struct ssi_protocol_platform_data *pdata = dev_get_platdata(dev);
struct ssi_protocol *ssi;
int err;
@@ -1093,6 +1104,8 @@ static int ssi_protocol_probe(struct device *dev)
return -ENOMEM;
}
+ ssi->modem_type = pdata->type;
+
spin_lock_init(&ssi->lock);
init_timer_deferrable(&ssi->rx_wd);
init_timer_deferrable(&ssi->tx_wd);
@@ -1137,12 +1150,24 @@ static int ssi_protocol_probe(struct device *dev)
goto out1;
}
+ err = device_create_file(dev, &dev_attr_rapuyama_version);
+ if (err < 0) {
+ dev_err(dev, "Could not create sysfs file for rapuyama version");
+ goto out2;
+ }
+
+ err = sysfs_create_link(&dev->kobj, &pdata->nokia_modem_dev->kobj, "nokia-modem");
+ if (err < 0) {
+ dev_err(dev, "Could not create sysfs symlink to nokia-modem");
+ goto out3;
+ }
+
SET_NETDEV_DEV(ssi->netdev, dev);
netif_carrier_off(ssi->netdev);
err = register_netdev(ssi->netdev);
if (err < 0) {
dev_err(dev, "Register netdev failed (%d)\n", err);
- goto out2;
+ goto out4;
}
list_add(&ssi->link, &ssip_list);
@@ -1151,6 +1176,10 @@ static int ssi_protocol_probe(struct device *dev)
ssi->channel_id_cmd, ssi->channel_id_data);
return 0;
+out4:
+ sysfs_remove_link(&dev->kobj, "nokia-modem");
+out3:
+ device_remove_file(dev, &dev_attr_rapuyama_version);
out2:
free_netdev(ssi->netdev);
out1:
@@ -1167,6 +1196,8 @@ static int ssi_protocol_remove(struct device *dev)
struct ssi_protocol *ssi = hsi_client_drvdata(cl);
list_del(&ssi->link);
+ sysfs_remove_link(&dev->kobj, "nokia-modem");
+ device_remove_file(dev, &dev_attr_rapuyama_version);
unregister_netdev(ssi->netdev);
ssip_free_cmds(ssi);
hsi_client_set_drvdata(cl, NULL);
diff --git a/include/linux/hsi/ssi_protocol.h b/include/linux/hsi/ssi_protocol.h
index 6b742e9368a7..ba069812341b 100644
--- a/include/linux/hsi/ssi_protocol.h
+++ b/include/linux/hsi/ssi_protocol.h
@@ -33,6 +33,17 @@ enum nokia_modem_state {
STATE_OFF,
};
+enum nokia_modem_type {
+ UNKNOWN = 0,
+ RAPUYAMA_V1,
+ RAPUYAMA_V2,
+};
+
+struct ssi_protocol_platform_data {
+ enum nokia_modem_type type;
+ struct device *nokia_modem_dev;
+};
+
static inline void ssip_slave_put_master(struct hsi_client *master)
{
}
--
2.7.0.rc3
--
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