diff options
Diffstat (limited to 'drivers/counter/microchip-tcb-capture.c')
| -rw-r--r-- | drivers/counter/microchip-tcb-capture.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/counter/microchip-tcb-capture.c b/drivers/counter/microchip-tcb-capture.c index 00844445143b..e2d1dc6ca668 100644 --- a/drivers/counter/microchip-tcb-capture.c +++ b/drivers/counter/microchip-tcb-capture.c @@ -28,7 +28,6 @@ struct mchp_tc_data { int qdec_mode; int num_channels; int channel[2]; - bool trig_inverted; }; static const enum counter_function mchp_tc_count_functions[] = { @@ -153,7 +152,7 @@ static int mchp_tc_count_signal_read(struct counter_device *counter, regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], SR), &sr); - if (priv->trig_inverted) + if (signal->id == 1) sigstatus = (sr & ATMEL_TC_MTIOB); else sigstatus = (sr & ATMEL_TC_MTIOA); @@ -171,6 +170,17 @@ static int mchp_tc_count_action_read(struct counter_device *counter, struct mchp_tc_data *const priv = counter_priv(counter); u32 cmr; + if (priv->qdec_mode) { + *action = COUNTER_SYNAPSE_ACTION_BOTH_EDGES; + return 0; + } + + /* Only TIOA signal is evaluated in non-QDEC mode */ + if (synapse->signal->id != 0) { + *action = COUNTER_SYNAPSE_ACTION_NONE; + return 0; + } + regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr); switch (cmr & ATMEL_TC_ETRGEDG) { @@ -199,8 +209,8 @@ static int mchp_tc_count_action_write(struct counter_device *counter, struct mchp_tc_data *const priv = counter_priv(counter); u32 edge = ATMEL_TC_ETRGEDG_NONE; - /* QDEC mode is rising edge only */ - if (priv->qdec_mode) + /* QDEC mode is rising edge only; only TIOA handled in non-QDEC mode */ + if (priv->qdec_mode || synapse->signal->id != 0) return -EINVAL; switch (action) { @@ -394,3 +404,4 @@ module_platform_driver(mchp_tc_driver); MODULE_AUTHOR("Kamel Bouhara <kamel.bouhara@bootlin.com>"); MODULE_DESCRIPTION("Microchip TCB Capture driver"); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(COUNTER); |