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authorChristophe Ricard <christophe.ricard@gmail.com>2014-04-01 00:34:06 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2014-04-22 00:37:30 +0200
commitfcb45e6ab3c6de2054b13a976ad8d42cef35f529 (patch)
treefb84a944fb5e8a47cb71b222ab4e29896cdf400f /drivers/nfc
parent9bac75d0eceb8d7fea74f11a8b304aa1119681f2 (diff)
downloadlinux-fcb45e6ab3c6de2054b13a976ad8d42cef35f529.tar.bz2
NFC: st21nfca: Reworked st21nfca_request_resources
Remove struct st21nfca_i2c_phy* as this parameter can be retrieve through i2c_get_clientdata(client) Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/st21nfca/i2c.c42
1 files changed, 26 insertions, 16 deletions
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c
index aafe70e9abea..4cbd8fba4b95 100644
--- a/drivers/nfc/st21nfca/i2c.c
+++ b/drivers/nfc/st21nfca/i2c.c
@@ -451,10 +451,10 @@ static struct nfc_phy_ops i2c_phy_ops = {
.disable = st21nfca_hci_i2c_disable,
};
-static int st21nfca_request_resources(struct st21nfca_i2c_phy *phy,
- struct i2c_client *client)
+static int st21nfca_hci_i2c_request_resources(struct i2c_client *client)
{
struct st21nfca_nfc_platform_data *pdata;
+ struct st21nfca_i2c_phy *phy = i2c_get_clientdata(client);
int r;
pdata = client->dev.platform_data;
@@ -467,7 +467,6 @@ static int st21nfca_request_resources(struct st21nfca_i2c_phy *phy,
phy->gpio_irq = pdata->gpio_irq;
phy->gpio_ena = pdata->gpio_ena;
phy->irq_polarity = pdata->irq_polarity;
- phy->i2c_dev = client;
r = devm_gpio_request(&client->dev, phy->gpio_irq, "wake_up");
if (r) {
@@ -481,7 +480,7 @@ static int st21nfca_request_resources(struct st21nfca_i2c_phy *phy,
return -ENODEV;
}
- if (phy->gpio_ena != 0) {
+ if (phy->gpio_ena > 0) {
r = devm_gpio_request(&client->dev,
phy->gpio_ena, "clf_enable");
if (r) {
@@ -497,13 +496,7 @@ static int st21nfca_request_resources(struct st21nfca_i2c_phy *phy,
}
}
- phy->pending_skb = alloc_skb(ST21NFCA_HCI_LLC_MAX_SIZE * 2, GFP_KERNEL);
- if (phy->pending_skb == NULL)
- return -ENOMEM;
-
- phy->current_read_len = 0;
- phy->crc_trials = 0;
- return r;
+ return 0;
}
static int st21nfca_hci_i2c_probe(struct i2c_client *client,
@@ -511,7 +504,8 @@ static int st21nfca_hci_i2c_probe(struct i2c_client *client,
{
struct st21nfca_i2c_phy *phy;
struct st21nfca_nfc_platform_data *pdata;
- int r = 0;
+ int r;
+ int irq;
dev_dbg(&client->dev, "%s\n", __func__);
dev_dbg(&client->dev, "IRQ: %d\n", client->irq);
@@ -530,21 +524,36 @@ static int st21nfca_hci_i2c_probe(struct i2c_client *client,
}
phy->i2c_dev = client;
+ phy->pending_skb = alloc_skb(ST21NFCA_HCI_LLC_MAX_SIZE * 2, GFP_KERNEL);
+ if (phy->pending_skb == NULL)
+ return -ENOMEM;
+ phy->current_read_len = 0;
+ phy->crc_trials = 0;
i2c_set_clientdata(client, phy);
pdata = client->dev.platform_data;
- if (pdata == NULL) {
+ if (!pdata) {
nfc_err(&client->dev, "No platform data\n");
return -EINVAL;
}
- r = st21nfca_request_resources(phy, client);
+ r = st21nfca_hci_i2c_request_resources(client);
if (r) {
nfc_err(&client->dev, "Cannot get platform resources\n");
return r;
}
+ /* IRQ */
+ irq = gpio_to_irq(phy->gpio_irq);
+ if (irq < 0) {
+ nfc_err(&client->dev,
+ "Unable to get irq number for GPIO %d error %d\n",
+ phy->gpio_irq, r);
+ return -ENODEV;
+ }
+ client->irq = irq;
+
st21nfca_hci_platform_init(phy);
r = devm_request_threaded_irq(&client->dev, client->irq, NULL,
st21nfca_hci_irq_thread_fn,
@@ -576,8 +585,9 @@ static int st21nfca_hci_i2c_remove(struct i2c_client *client)
static struct i2c_driver st21nfca_hci_i2c_driver = {
.driver = {
- .name = ST21NFCA_HCI_I2C_DRIVER_NAME,
- },
+ .owner = THIS_MODULE,
+ .name = ST21NFCA_HCI_I2C_DRIVER_NAME,
+ },
.probe = st21nfca_hci_i2c_probe,
.id_table = st21nfca_hci_i2c_id_table,
.remove = st21nfca_hci_i2c_remove,