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| author | Eric Lapuyade <eric.lapuyade@linux.intel.com> | 2013-07-19 14:57:13 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-08-14 01:08:12 +0200 |
| commit | eab10b71a7d62d7cc6db631dba448f1d84df9b53 (patch) | |
| tree | 96c4c697aaab1da7cce768945365e07bcf3fe63d /drivers/nfc | |
| parent | ef04158e13e827315680cf8449d9af3bd8dc6280 (diff) | |
| download | linux-eab10b71a7d62d7cc6db631dba448f1d84df9b53.tar.gz linux-eab10b71a7d62d7cc6db631dba448f1d84df9b53.tar.bz2 linux-eab10b71a7d62d7cc6db631dba448f1d84df9b53.zip | |
NFC: pn544: i2c: Add firmware download mode power-on support
This is in preparation for pn544-i2c firmware download feature, where we
need to know if we're in regular or firmware upload mode.
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/pn544/i2c.c | 14 | ||||
| -rw-r--r-- | drivers/nfc/pn544/pn544.c | 3 | ||||
| -rw-r--r-- | drivers/nfc/pn544/pn544.h | 3 |
3 files changed, 14 insertions, 6 deletions
diff --git a/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c index 8cf64c19f022..e09c8982596c 100644 --- a/drivers/nfc/pn544/i2c.c +++ b/drivers/nfc/pn544/i2c.c @@ -65,6 +65,7 @@ struct pn544_i2c_phy { unsigned int en_polarity; int powered; + int run_mode; int hard_fault; /* * < 0 if hardware error occured (e.g. i2c err) @@ -122,15 +123,22 @@ out: gpio_set_value(phy->gpio_en, !phy->en_polarity); } +static void pn544_hci_i2c_enable_mode(struct pn544_i2c_phy *phy, int run_mode) +{ + gpio_set_value(phy->gpio_fw, run_mode == PN544_FW_MODE ? 1 : 0); + gpio_set_value(phy->gpio_en, phy->en_polarity); + usleep_range(10000, 15000); + + phy->run_mode = run_mode; +} + static int pn544_hci_i2c_enable(void *phy_id) { struct pn544_i2c_phy *phy = phy_id; pr_info(DRIVER_DESC ": %s\n", __func__); - gpio_set_value(phy->gpio_fw, 0); - gpio_set_value(phy->gpio_en, phy->en_polarity); - usleep_range(10000, 15000); + pn544_hci_i2c_enable_mode(phy, PN544_HCI_MODE); phy->powered = 1; diff --git a/drivers/nfc/pn544/pn544.c b/drivers/nfc/pn544/pn544.c index 0d17da7675b7..1d4b38c036fb 100644 --- a/drivers/nfc/pn544/pn544.c +++ b/drivers/nfc/pn544/pn544.c @@ -31,9 +31,6 @@ /* Timing restrictions (ms) */ #define PN544_HCI_RESETVEN_TIME 30 -#define HCI_MODE 0 -#define FW_MODE 1 - enum pn544_state { PN544_ST_COLD, PN544_ST_FW_READY, diff --git a/drivers/nfc/pn544/pn544.h b/drivers/nfc/pn544/pn544.h index f47c6454914b..d689f0ac64aa 100644 --- a/drivers/nfc/pn544/pn544.h +++ b/drivers/nfc/pn544/pn544.h @@ -24,6 +24,9 @@ #define DRIVER_DESC "HCI NFC driver for PN544" +#define PN544_HCI_MODE 0 +#define PN544_FW_MODE 1 + int pn544_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, char *llc_name, int phy_headroom, int phy_tailroom, int phy_payload, struct nfc_hci_dev **hdev); |