diff options
Diffstat (limited to 'drivers/nfc/st21nfca/i2c.c')
| -rw-r--r-- | drivers/nfc/st21nfca/i2c.c | 41 |
1 files changed, 8 insertions, 33 deletions
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c index 0ea756b77519..05722085a59f 100644 --- a/drivers/nfc/st21nfca/i2c.c +++ b/drivers/nfc/st21nfca/i2c.c @@ -28,8 +28,8 @@ #include <linux/delay.h> #include <linux/nfc.h> #include <linux/firmware.h> -#include <linux/unaligned/access_ok.h> #include <linux/platform_data/st21nfca.h> +#include <asm/unaligned.h> #include <net/nfc/hci.h> #include <net/nfc/llc.h> @@ -72,7 +72,6 @@ struct st21nfca_i2c_phy { struct nfc_hci_dev *hdev; unsigned int gpio_ena; - unsigned int gpio_irq; unsigned int irq_polarity; struct sk_buff *pending_skb; @@ -531,20 +530,12 @@ static int st21nfca_hci_i2c_of_request_resources(struct i2c_client *client) "clf_enable"); if (r) { nfc_err(&client->dev, "Failed to request enable pin\n"); - return -ENODEV; + return r; } phy->gpio_ena = gpio; - /* IRQ */ - r = irq_of_parse_and_map(pp, 0); - if (r < 0) { - nfc_err(&client->dev, "Unable to get irq, error: %d\n", r); - return r; - } - - phy->irq_polarity = irq_get_trigger_type(r); - client->irq = r; + phy->irq_polarity = irq_get_trigger_type(client->irq); return 0; } @@ -560,7 +551,6 @@ 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; - int irq; pdata = client->dev.platform_data; if (pdata == NULL) { @@ -569,36 +559,18 @@ static int st21nfca_hci_i2c_request_resources(struct i2c_client *client) } /* store for later use */ - phy->gpio_irq = pdata->gpio_irq; phy->gpio_ena = pdata->gpio_ena; phy->irq_polarity = pdata->irq_polarity; - r = devm_gpio_request_one(&client->dev, phy->gpio_irq, GPIOF_IN, - "wake_up"); - if (r) { - pr_err("%s : gpio_request failed\n", __FILE__); - return -ENODEV; - } - if (phy->gpio_ena > 0) { r = devm_gpio_request_one(&client->dev, phy->gpio_ena, GPIOF_OUT_INIT_HIGH, "clf_enable"); if (r) { pr_err("%s : ena gpio_request failed\n", __FILE__); - return -ENODEV; + 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; - return 0; } @@ -656,7 +628,7 @@ static int st21nfca_hci_i2c_probe(struct i2c_client *client, r = st21nfca_hci_platform_init(phy); if (r < 0) { nfc_err(&client->dev, "Unable to reboot st21nfca\n"); - return -ENODEV; + return r; } r = devm_request_threaded_irq(&client->dev, client->irq, NULL, @@ -687,10 +659,13 @@ static int st21nfca_hci_i2c_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_OF static const struct of_device_id of_st21nfca_i2c_match[] = { { .compatible = "st,st21nfca_i2c", }, {} }; +MODULE_DEVICE_TABLE(of, of_st21nfca_i2c_match); +#endif static struct i2c_driver st21nfca_hci_i2c_driver = { .driver = { |