diff options
| author | Mark A. Greer <mgreer@animalcreek.com> | 2014-09-02 15:12:36 -0700 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2014-09-07 23:13:44 +0200 |
| commit | b528281b8b7a9c379baf37720191a799fbc9800c (patch) | |
| tree | ccf37ab8ffd3e4f483c11e561d0589ed5d12ab88 /drivers | |
| parent | ceccd6aa50887352e66d0edf68d8be510a639da6 (diff) | |
| download | linux-b528281b8b7a9c379baf37720191a799fbc9800c.tar.bz2 | |
NFC: trf7970a: Create startup and shutdown routines
Encapsulate the code to start up and gracefully
shutdown the driver and trf7970a device. Doing
this makes adding system suspend/resume support
easier and the resulting code cleaner.
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nfc/trf7970a.c | 72 |
1 files changed, 43 insertions, 29 deletions
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c index 84a9c3f78621..a42675da0667 100644 --- a/drivers/nfc/trf7970a.c +++ b/drivers/nfc/trf7970a.c @@ -1385,6 +1385,44 @@ static int trf7970a_power_down(struct trf7970a *trf) return ret; } +static int trf7970a_startup(struct trf7970a *trf) +{ + int ret; + + ret = trf7970a_power_up(trf); + if (ret) + return ret; + + pm_runtime_set_active(trf->dev); + pm_runtime_enable(trf->dev); + pm_runtime_mark_last_busy(trf->dev); + + return 0; +} + +static void trf7970a_shutdown(struct trf7970a *trf) +{ + switch (trf->state) { + case TRF7970A_ST_WAIT_FOR_TX_FIFO: + case TRF7970A_ST_WAIT_FOR_RX_DATA: + case TRF7970A_ST_WAIT_FOR_RX_DATA_CONT: + case TRF7970A_ST_WAIT_TO_ISSUE_EOF: + trf7970a_send_err_upstream(trf, -ECANCELED); + /* FALLTHROUGH */ + case TRF7970A_ST_IDLE: + case TRF7970A_ST_IDLE_RX_BLOCKED: + trf7970a_switch_rf_off(trf); + break; + default: + break; + } + + pm_runtime_disable(trf->dev); + pm_runtime_set_suspended(trf->dev); + + trf7970a_power_down(trf); +} + static int trf7970a_get_autosuspend_delay(struct device_node *np) { int autosuspend_delay, ret; @@ -1512,27 +1550,21 @@ static int trf7970a_probe(struct spi_device *spi) pm_runtime_set_autosuspend_delay(trf->dev, autosuspend_delay); pm_runtime_use_autosuspend(trf->dev); - ret = trf7970a_power_up(trf); + ret = trf7970a_startup(trf); if (ret) goto err_free_ddev; - pm_runtime_set_active(trf->dev); - pm_runtime_enable(trf->dev); - pm_runtime_mark_last_busy(trf->dev); - ret = nfc_digital_register_device(trf->ddev); if (ret) { dev_err(trf->dev, "Can't register NFC digital device: %d\n", ret); - goto err_power_down; + goto err_shutdown; } return 0; -err_power_down: - pm_runtime_disable(trf->dev); - pm_runtime_set_suspended(trf->dev); - trf7970a_power_down(trf); +err_shutdown: + trf7970a_shutdown(trf); err_free_ddev: nfc_digital_free_device(trf->ddev); err_disable_regulator: @@ -1548,25 +1580,7 @@ static int trf7970a_remove(struct spi_device *spi) mutex_lock(&trf->lock); - switch (trf->state) { - case TRF7970A_ST_WAIT_FOR_TX_FIFO: - case TRF7970A_ST_WAIT_FOR_RX_DATA: - case TRF7970A_ST_WAIT_FOR_RX_DATA_CONT: - case TRF7970A_ST_WAIT_TO_ISSUE_EOF: - trf7970a_send_err_upstream(trf, -ECANCELED); - /* FALLTHROUGH */ - case TRF7970A_ST_IDLE: - case TRF7970A_ST_IDLE_RX_BLOCKED: - trf7970a_switch_rf_off(trf); - break; - default: - break; - } - - pm_runtime_disable(trf->dev); - pm_runtime_set_suspended(trf->dev); - - trf7970a_power_down(trf); + trf7970a_shutdown(trf); mutex_unlock(&trf->lock); |