| Message ID | 20220803174505.21420-3-macroalpha82@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | dt-bindings: adc-joystick: add poll-interval | expand |
On 2022-08-03 19:45, Chris Morgan wrote: > From: Chris Morgan <macromorgan@hotmail.com> > > Add polled input device support to the adc-joystick driver. This is > useful for devices which do not have hardware capable triggers on > their SARADC. Code modified from adc-joystick.c changes made by Maya > Matuszczyk. > > Signed-off-by: Maya Matuszczyk <maccraft123mc@gmail.com> > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> > --- Chris, some minor details inline. > drivers/input/joystick/adc-joystick.c | 53 ++++++++++++++++++++++++--- > 1 file changed, 47 insertions(+), 6 deletions(-) > > diff --git a/drivers/input/joystick/adc-joystick.c > b/drivers/input/joystick/adc-joystick.c > index 78ebca7d400a..a288ebfe254e 100644 > --- a/drivers/input/joystick/adc-joystick.c > +++ b/drivers/input/joystick/adc-joystick.c > @@ -26,8 +26,23 @@ struct adc_joystick { > struct adc_joystick_axis *axes; > struct iio_channel *chans; > int num_chans; > + bool polled; > }; > > +static void adc_joystick_poll(struct input_dev *input) > +{ > + struct adc_joystick *joy = input_get_drvdata(input); > + int i, val, ret; > + > + for (i = 0; i < joy->num_chans; i++) { > + ret = iio_read_channel_raw(&joy->chans[i], &val); > + if (ret < 0) > + return; > + input_report_abs(input, joy->axes[i].code, val); > + } > + input_sync(input); > +} > + > static int adc_joystick_handle(const void *data, void *private) > { > struct adc_joystick *joy = private; > @@ -179,6 +194,7 @@ static int adc_joystick_probe(struct > platform_device *pdev) > int error; > int bits; > int i; > + unsigned int poll_interval; > > joy = devm_kzalloc(dev, sizeof(*joy), GFP_KERNEL); > if (!joy) > @@ -192,11 +208,25 @@ static int adc_joystick_probe(struct > platform_device *pdev) > return error; > } > > - /* Count how many channels we got. NULL terminated. */ > + if (device_property_present(dev, "poll-interval")) { > + error = device_property_read_u32(dev, "poll-interval", > + &poll_interval); > + if (error) > + return error; > + joy->polled = true; > + } > + > + /* > + * Count how many channels we got. NULL terminated. > + * Do not check the storage size if using polling. > + */ > for (i = 0; joy->chans[i].indio_dev; i++) { > + if (joy->polled) > + continue; > bits = joy->chans[i].channel->scan_type.storagebits; > if (!bits || bits > 16) { > - dev_err(dev, "Unsupported channel storage size\n"); > + dev_err(dev, > + "Unsupported channel storage size\n"); This change is now unnecessary, as the line can fit in 80 chars again. > return -EINVAL; > } > if (bits != joy->chans[0].channel->scan_type.storagebits) { > @@ -215,8 +245,14 @@ static int adc_joystick_probe(struct > platform_device *pdev) > joy->input = input; > input->name = pdev->name; > input->id.bustype = BUS_HOST; > - input->open = adc_joystick_open; > - input->close = adc_joystick_close; > + > + if (joy->polled) { > + input_setup_polling(input, adc_joystick_poll); > + input_set_poll_interval(input, poll_interval); > + } else { > + input->open = adc_joystick_open; > + input->close = adc_joystick_close; > + } > > error = adc_joystick_set_axes(dev, joy); > if (error) > @@ -229,13 +265,18 @@ static int adc_joystick_probe(struct > platform_device *pdev) > return error; > } > > - joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy); > + if (joy->polled) > + return 0; > + > + joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, > + joy); Same here. > if (IS_ERR(joy->buffer)) { > dev_err(dev, "Unable to allocate callback buffer\n"); > return PTR_ERR(joy->buffer); > } > > - error = devm_add_action_or_reset(dev, adc_joystick_cleanup, > joy->buffer); > + error = devm_add_action_or_reset(dev, adc_joystick_cleanup, > + joy->buffer); And here. > if (error) { > dev_err(dev, "Unable to add action\n"); > return error;
On Wed, Aug 03, 2022 at 08:03:17PM +0200, Artur Rojek wrote: > On 2022-08-03 19:45, Chris Morgan wrote: > > From: Chris Morgan <macromorgan@hotmail.com> > > > > Add polled input device support to the adc-joystick driver. This is > > useful for devices which do not have hardware capable triggers on > > their SARADC. Code modified from adc-joystick.c changes made by Maya > > Matuszczyk. > > > > Signed-off-by: Maya Matuszczyk <maccraft123mc@gmail.com> > > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> > > --- > Chris, > some minor details inline. > > drivers/input/joystick/adc-joystick.c | 53 ++++++++++++++++++++++++--- > > 1 file changed, 47 insertions(+), 6 deletions(-) > > > > diff --git a/drivers/input/joystick/adc-joystick.c > > b/drivers/input/joystick/adc-joystick.c > > index 78ebca7d400a..a288ebfe254e 100644 > > --- a/drivers/input/joystick/adc-joystick.c > > +++ b/drivers/input/joystick/adc-joystick.c > > @@ -26,8 +26,23 @@ struct adc_joystick { > > struct adc_joystick_axis *axes; > > struct iio_channel *chans; > > int num_chans; > > + bool polled; > > }; > > > > +static void adc_joystick_poll(struct input_dev *input) > > +{ > > + struct adc_joystick *joy = input_get_drvdata(input); > > + int i, val, ret; > > + > > + for (i = 0; i < joy->num_chans; i++) { > > + ret = iio_read_channel_raw(&joy->chans[i], &val); > > + if (ret < 0) > > + return; > > + input_report_abs(input, joy->axes[i].code, val); > > + } > > + input_sync(input); > > +} > > + > > static int adc_joystick_handle(const void *data, void *private) > > { > > struct adc_joystick *joy = private; > > @@ -179,6 +194,7 @@ static int adc_joystick_probe(struct platform_device > > *pdev) > > int error; > > int bits; > > int i; > > + unsigned int poll_interval; > > > > joy = devm_kzalloc(dev, sizeof(*joy), GFP_KERNEL); > > if (!joy) > > @@ -192,11 +208,25 @@ static int adc_joystick_probe(struct > > platform_device *pdev) > > return error; > > } > > > > - /* Count how many channels we got. NULL terminated. */ > > + if (device_property_present(dev, "poll-interval")) { > > + error = device_property_read_u32(dev, "poll-interval", > > + &poll_interval); > > + if (error) > > + return error; > > + joy->polled = true; > > + } > > + > > + /* > > + * Count how many channels we got. NULL terminated. > > + * Do not check the storage size if using polling. > > + */ > > for (i = 0; joy->chans[i].indio_dev; i++) { > > + if (joy->polled) > > + continue; > > bits = joy->chans[i].channel->scan_type.storagebits; > > if (!bits || bits > 16) { > > - dev_err(dev, "Unsupported channel storage size\n"); > > + dev_err(dev, > > + "Unsupported channel storage size\n"); > This change is now unnecessary, as the line can fit in 80 chars again. > > return -EINVAL; > > } > > if (bits != joy->chans[0].channel->scan_type.storagebits) { > > @@ -215,8 +245,14 @@ static int adc_joystick_probe(struct > > platform_device *pdev) > > joy->input = input; > > input->name = pdev->name; > > input->id.bustype = BUS_HOST; > > - input->open = adc_joystick_open; > > - input->close = adc_joystick_close; > > + > > + if (joy->polled) { > > + input_setup_polling(input, adc_joystick_poll); > > + input_set_poll_interval(input, poll_interval); > > + } else { > > + input->open = adc_joystick_open; > > + input->close = adc_joystick_close; > > + } > > > > error = adc_joystick_set_axes(dev, joy); > > if (error) > > @@ -229,13 +265,18 @@ static int adc_joystick_probe(struct > > platform_device *pdev) > > return error; > > } > > > > - joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy); > > + if (joy->polled) > > + return 0; > > + > > + joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, > > + joy); > Same here. > > if (IS_ERR(joy->buffer)) { > > dev_err(dev, "Unable to allocate callback buffer\n"); > > return PTR_ERR(joy->buffer); > > } > > > > - error = devm_add_action_or_reset(dev, adc_joystick_cleanup, > > joy->buffer); > > + error = devm_add_action_or_reset(dev, adc_joystick_cleanup, > > + joy->buffer); > And here. This one comes in at 82 when I make it a one-liner. I'll update the others but leave this one here alone. Thank you. > > if (error) { > > dev_err(dev, "Unable to add action\n"); > > return error;
On 2022-08-04 20:40, Chris Morgan wrote: > On Wed, Aug 03, 2022 at 08:03:17PM +0200, Artur Rojek wrote: >> On 2022-08-03 19:45, Chris Morgan wrote: >> > From: Chris Morgan <macromorgan@hotmail.com> >> > >> > Add polled input device support to the adc-joystick driver. This is >> > useful for devices which do not have hardware capable triggers on >> > their SARADC. Code modified from adc-joystick.c changes made by Maya >> > Matuszczyk. >> > >> > Signed-off-by: Maya Matuszczyk <maccraft123mc@gmail.com> >> > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> >> > --- >> Chris, >> some minor details inline. >> > drivers/input/joystick/adc-joystick.c | 53 ++++++++++++++++++++++++--- >> > 1 file changed, 47 insertions(+), 6 deletions(-) >> > >> > diff --git a/drivers/input/joystick/adc-joystick.c >> > b/drivers/input/joystick/adc-joystick.c >> > index 78ebca7d400a..a288ebfe254e 100644 >> > --- a/drivers/input/joystick/adc-joystick.c >> > +++ b/drivers/input/joystick/adc-joystick.c >> > @@ -26,8 +26,23 @@ struct adc_joystick { >> > struct adc_joystick_axis *axes; >> > struct iio_channel *chans; >> > int num_chans; >> > + bool polled; >> > }; >> > >> > +static void adc_joystick_poll(struct input_dev *input) >> > +{ >> > + struct adc_joystick *joy = input_get_drvdata(input); >> > + int i, val, ret; >> > + >> > + for (i = 0; i < joy->num_chans; i++) { >> > + ret = iio_read_channel_raw(&joy->chans[i], &val); >> > + if (ret < 0) >> > + return; >> > + input_report_abs(input, joy->axes[i].code, val); >> > + } >> > + input_sync(input); >> > +} >> > + >> > static int adc_joystick_handle(const void *data, void *private) >> > { >> > struct adc_joystick *joy = private; >> > @@ -179,6 +194,7 @@ static int adc_joystick_probe(struct platform_device >> > *pdev) >> > int error; >> > int bits; >> > int i; >> > + unsigned int poll_interval; >> > >> > joy = devm_kzalloc(dev, sizeof(*joy), GFP_KERNEL); >> > if (!joy) >> > @@ -192,11 +208,25 @@ static int adc_joystick_probe(struct >> > platform_device *pdev) >> > return error; >> > } >> > >> > - /* Count how many channels we got. NULL terminated. */ >> > + if (device_property_present(dev, "poll-interval")) { >> > + error = device_property_read_u32(dev, "poll-interval", >> > + &poll_interval); >> > + if (error) >> > + return error; >> > + joy->polled = true; >> > + } >> > + >> > + /* >> > + * Count how many channels we got. NULL terminated. >> > + * Do not check the storage size if using polling. >> > + */ >> > for (i = 0; joy->chans[i].indio_dev; i++) { >> > + if (joy->polled) >> > + continue; >> > bits = joy->chans[i].channel->scan_type.storagebits; >> > if (!bits || bits > 16) { >> > - dev_err(dev, "Unsupported channel storage size\n"); >> > + dev_err(dev, >> > + "Unsupported channel storage size\n"); >> This change is now unnecessary, as the line can fit in 80 chars again. >> > return -EINVAL; >> > } >> > if (bits != joy->chans[0].channel->scan_type.storagebits) { >> > @@ -215,8 +245,14 @@ static int adc_joystick_probe(struct >> > platform_device *pdev) >> > joy->input = input; >> > input->name = pdev->name; >> > input->id.bustype = BUS_HOST; >> > - input->open = adc_joystick_open; >> > - input->close = adc_joystick_close; >> > + >> > + if (joy->polled) { >> > + input_setup_polling(input, adc_joystick_poll); >> > + input_set_poll_interval(input, poll_interval); >> > + } else { >> > + input->open = adc_joystick_open; >> > + input->close = adc_joystick_close; >> > + } >> > >> > error = adc_joystick_set_axes(dev, joy); >> > if (error) >> > @@ -229,13 +265,18 @@ static int adc_joystick_probe(struct >> > platform_device *pdev) >> > return error; >> > } >> > >> > - joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy); >> > + if (joy->polled) >> > + return 0; >> > + >> > + joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, >> > + joy); >> Same here. >> > if (IS_ERR(joy->buffer)) { >> > dev_err(dev, "Unable to allocate callback buffer\n"); >> > return PTR_ERR(joy->buffer); >> > } >> > >> > - error = devm_add_action_or_reset(dev, adc_joystick_cleanup, >> > joy->buffer); >> > + error = devm_add_action_or_reset(dev, adc_joystick_cleanup, >> > + joy->buffer); >> And here. > > This one comes in at 82 when I make it a one-liner. I'll update the > others but > leave this one here alone. It doesn't relate to the polled input functionality anymore, so please remove it. I'll correct such minor mistakes with a larger cleanup patch eventually. Cheers, Artur > > Thank you. > >> > if (error) { >> > dev_err(dev, "Unable to add action\n"); >> > return error;
On Thu, Aug 04, 2022 at 08:52:03PM +0200, Artur Rojek wrote: > On 2022-08-04 20:40, Chris Morgan wrote: > > On Wed, Aug 03, 2022 at 08:03:17PM +0200, Artur Rojek wrote: > > > On 2022-08-03 19:45, Chris Morgan wrote: > > > > From: Chris Morgan <macromorgan@hotmail.com> > > > > > > > > Add polled input device support to the adc-joystick driver. This is > > > > useful for devices which do not have hardware capable triggers on > > > > their SARADC. Code modified from adc-joystick.c changes made by Maya > > > > Matuszczyk. > > > > > > > > Signed-off-by: Maya Matuszczyk <maccraft123mc@gmail.com> > > > > Signed-off-by: Chris Morgan <macromorgan@hotmail.com> > > > > --- > > > Chris, > > > some minor details inline. > > > > drivers/input/joystick/adc-joystick.c | 53 ++++++++++++++++++++++++--- > > > > 1 file changed, 47 insertions(+), 6 deletions(-) > > > > > > > > diff --git a/drivers/input/joystick/adc-joystick.c > > > > b/drivers/input/joystick/adc-joystick.c > > > > index 78ebca7d400a..a288ebfe254e 100644 > > > > --- a/drivers/input/joystick/adc-joystick.c > > > > +++ b/drivers/input/joystick/adc-joystick.c > > > > @@ -26,8 +26,23 @@ struct adc_joystick { > > > > struct adc_joystick_axis *axes; > > > > struct iio_channel *chans; > > > > int num_chans; > > > > + bool polled; > > > > }; > > > > > > > > +static void adc_joystick_poll(struct input_dev *input) > > > > +{ > > > > + struct adc_joystick *joy = input_get_drvdata(input); > > > > + int i, val, ret; > > > > + > > > > + for (i = 0; i < joy->num_chans; i++) { > > > > + ret = iio_read_channel_raw(&joy->chans[i], &val); > > > > + if (ret < 0) > > > > + return; > > > > + input_report_abs(input, joy->axes[i].code, val); > > > > + } > > > > + input_sync(input); > > > > +} > > > > + > > > > static int adc_joystick_handle(const void *data, void *private) > > > > { > > > > struct adc_joystick *joy = private; > > > > @@ -179,6 +194,7 @@ static int adc_joystick_probe(struct platform_device > > > > *pdev) > > > > int error; > > > > int bits; > > > > int i; > > > > + unsigned int poll_interval; > > > > > > > > joy = devm_kzalloc(dev, sizeof(*joy), GFP_KERNEL); > > > > if (!joy) > > > > @@ -192,11 +208,25 @@ static int adc_joystick_probe(struct > > > > platform_device *pdev) > > > > return error; > > > > } > > > > > > > > - /* Count how many channels we got. NULL terminated. */ > > > > + if (device_property_present(dev, "poll-interval")) { > > > > + error = device_property_read_u32(dev, "poll-interval", > > > > + &poll_interval); > > > > + if (error) > > > > + return error; > > > > + joy->polled = true; > > > > + } > > > > + > > > > + /* > > > > + * Count how many channels we got. NULL terminated. > > > > + * Do not check the storage size if using polling. > > > > + */ > > > > for (i = 0; joy->chans[i].indio_dev; i++) { > > > > + if (joy->polled) > > > > + continue; > > > > bits = joy->chans[i].channel->scan_type.storagebits; > > > > if (!bits || bits > 16) { > > > > - dev_err(dev, "Unsupported channel storage size\n"); > > > > + dev_err(dev, > > > > + "Unsupported channel storage size\n"); > > > This change is now unnecessary, as the line can fit in 80 chars again. > > > > return -EINVAL; > > > > } > > > > if (bits != joy->chans[0].channel->scan_type.storagebits) { > > > > @@ -215,8 +245,14 @@ static int adc_joystick_probe(struct > > > > platform_device *pdev) > > > > joy->input = input; > > > > input->name = pdev->name; > > > > input->id.bustype = BUS_HOST; > > > > - input->open = adc_joystick_open; > > > > - input->close = adc_joystick_close; > > > > + > > > > + if (joy->polled) { > > > > + input_setup_polling(input, adc_joystick_poll); > > > > + input_set_poll_interval(input, poll_interval); > > > > + } else { > > > > + input->open = adc_joystick_open; > > > > + input->close = adc_joystick_close; > > > > + } > > > > > > > > error = adc_joystick_set_axes(dev, joy); > > > > if (error) > > > > @@ -229,13 +265,18 @@ static int adc_joystick_probe(struct > > > > platform_device *pdev) > > > > return error; > > > > } > > > > > > > > - joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy); > > > > + if (joy->polled) > > > > + return 0; > > > > + > > > > + joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, > > > > + joy); > > > Same here. > > > > if (IS_ERR(joy->buffer)) { > > > > dev_err(dev, "Unable to allocate callback buffer\n"); > > > > return PTR_ERR(joy->buffer); > > > > } > > > > > > > > - error = devm_add_action_or_reset(dev, adc_joystick_cleanup, > > > > joy->buffer); > > > > + error = devm_add_action_or_reset(dev, adc_joystick_cleanup, > > > > + joy->buffer); > > > And here. > > > > This one comes in at 82 when I make it a one-liner. I'll update the > > others but > > leave this one here alone. > It doesn't relate to the polled input functionality anymore, so please > remove it. I'll correct such minor mistakes with a larger cleanup patch > eventually. Sorry, I resent too fast. I'll wait until tomorrow and send this (one last time hopefully) with this other line removed. Thank you. > > Cheers, > Artur > > > > Thank you. > > > > > > if (error) { > > > > dev_err(dev, "Unable to add action\n"); > > > > return error;
diff --git a/drivers/input/joystick/adc-joystick.c b/drivers/input/joystick/adc-joystick.c index 78ebca7d400a..a288ebfe254e 100644 --- a/drivers/input/joystick/adc-joystick.c +++ b/drivers/input/joystick/adc-joystick.c @@ -26,8 +26,23 @@ struct adc_joystick { struct adc_joystick_axis *axes; struct iio_channel *chans; int num_chans; + bool polled; }; +static void adc_joystick_poll(struct input_dev *input) +{ + struct adc_joystick *joy = input_get_drvdata(input); + int i, val, ret; + + for (i = 0; i < joy->num_chans; i++) { + ret = iio_read_channel_raw(&joy->chans[i], &val); + if (ret < 0) + return; + input_report_abs(input, joy->axes[i].code, val); + } + input_sync(input); +} + static int adc_joystick_handle(const void *data, void *private) { struct adc_joystick *joy = private; @@ -179,6 +194,7 @@ static int adc_joystick_probe(struct platform_device *pdev) int error; int bits; int i; + unsigned int poll_interval; joy = devm_kzalloc(dev, sizeof(*joy), GFP_KERNEL); if (!joy) @@ -192,11 +208,25 @@ static int adc_joystick_probe(struct platform_device *pdev) return error; } - /* Count how many channels we got. NULL terminated. */ + if (device_property_present(dev, "poll-interval")) { + error = device_property_read_u32(dev, "poll-interval", + &poll_interval); + if (error) + return error; + joy->polled = true; + } + + /* + * Count how many channels we got. NULL terminated. + * Do not check the storage size if using polling. + */ for (i = 0; joy->chans[i].indio_dev; i++) { + if (joy->polled) + continue; bits = joy->chans[i].channel->scan_type.storagebits; if (!bits || bits > 16) { - dev_err(dev, "Unsupported channel storage size\n"); + dev_err(dev, + "Unsupported channel storage size\n"); return -EINVAL; } if (bits != joy->chans[0].channel->scan_type.storagebits) { @@ -215,8 +245,14 @@ static int adc_joystick_probe(struct platform_device *pdev) joy->input = input; input->name = pdev->name; input->id.bustype = BUS_HOST; - input->open = adc_joystick_open; - input->close = adc_joystick_close; + + if (joy->polled) { + input_setup_polling(input, adc_joystick_poll); + input_set_poll_interval(input, poll_interval); + } else { + input->open = adc_joystick_open; + input->close = adc_joystick_close; + } error = adc_joystick_set_axes(dev, joy); if (error) @@ -229,13 +265,18 @@ static int adc_joystick_probe(struct platform_device *pdev) return error; } - joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy); + if (joy->polled) + return 0; + + joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, + joy); if (IS_ERR(joy->buffer)) { dev_err(dev, "Unable to allocate callback buffer\n"); return PTR_ERR(joy->buffer); } - error = devm_add_action_or_reset(dev, adc_joystick_cleanup, joy->buffer); + error = devm_add_action_or_reset(dev, adc_joystick_cleanup, + joy->buffer); if (error) { dev_err(dev, "Unable to add action\n"); return error;