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[34.85.216.189]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7b18d279126sm305483385a.9.2024.10.28.03.12.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Oct 2024 03:12:31 -0700 (PDT) From: Ricardo Ribalda Date: Mon, 28 Oct 2024 10:12:25 +0000 Subject: [PATCH v2 5/5] iio: hid-sensor-prox: Add support for more channels Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241028-hpd-v2-5-18f6e79154d7@chromium.org> References: <20241028-hpd-v2-0-18f6e79154d7@chromium.org> In-Reply-To: <20241028-hpd-v2-0-18f6e79154d7@chromium.org> To: Jiri Kosina , Benjamin Tissoires , Jonathan Cameron , Srinivas Pandruvada , Lars-Peter Clausen Cc: Harvey Yang , linux-input@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.13.0 Egis620 supports 3 channels: presense, proximity and attention. Modify the driver so it can read those channels as well. Signed-off-by: Ricardo Ribalda --- drivers/iio/light/hid-sensor-prox.c | 171 ++++++++++++++++++++------------= ---- 1 file changed, 95 insertions(+), 76 deletions(-) diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-se= nsor-prox.c index 0f12a8a83790..e6f81d40a492 100644 --- a/drivers/iio/light/hid-sensor-prox.c +++ b/drivers/iio/light/hid-sensor-prox.c @@ -13,16 +13,31 @@ #include #include "../common/hid-sensors/hid-sensor-trigger.h" =20 -#define CHANNEL_SCAN_INDEX_PRESENCE 0 +static const u32 prox_usage_ids[] =3D { + HID_USAGE_SENSOR_HUMAN_PRESENCE, + HID_USAGE_SENSOR_HUMAN_PROXIMITY, + HID_USAGE_SENSOR_HUMAN_ATTENTION, +}; +#define MAX_CHANNELS ARRAY_SIZE(prox_usage_ids) + +enum { + HID_HUMAN_PRESENCE, + HID_HUMAN_PROXIMITY, + HID_HUMAN_ATTENTION, +}; =20 struct prox_state { struct hid_sensor_hub_callbacks callbacks; struct hid_sensor_common common_attributes; - struct hid_sensor_hub_attribute_info prox_attr; - u32 human_presence; + struct hid_sensor_hub_attribute_info prox_attr[MAX_CHANNELS]; + struct iio_chan_spec channels[MAX_CHANNELS]; + u32 channel2usage[MAX_CHANNELS]; + u32 human_presence[MAX_CHANNELS]; int scale_pre_decml; int scale_post_decml; int scale_precision; + unsigned long scan_mask[2]; // One entry plus one terminator. + int num_channels; }; =20 static const u32 prox_sensitivity_addresses[] =3D { @@ -30,18 +45,23 @@ static const u32 prox_sensitivity_addresses[] =3D { HID_USAGE_SENSOR_DATA_PRESENCE, }; =20 -/* Channel definitions */ -static const struct iio_chan_spec prox_channels[] =3D { - { - .type =3D IIO_PROXIMITY, - .info_mask_separate =3D BIT(IIO_CHAN_INFO_RAW), - .info_mask_shared_by_type =3D BIT(IIO_CHAN_INFO_OFFSET) | - BIT(IIO_CHAN_INFO_SCALE) | - BIT(IIO_CHAN_INFO_SAMP_FREQ) | - BIT(IIO_CHAN_INFO_HYSTERESIS), - .scan_index =3D CHANNEL_SCAN_INDEX_PRESENCE, - .indexed =3D true, +#define PROX_CHANNEL(_type, _indexed, _channel) \ + {\ + .type =3D _type,\ + .info_mask_separate =3D BIT(IIO_CHAN_INFO_RAW),\ + .info_mask_shared_by_type =3D BIT(IIO_CHAN_INFO_OFFSET) |\ + BIT(IIO_CHAN_INFO_SCALE) |\ + BIT(IIO_CHAN_INFO_SAMP_FREQ) |\ + BIT(IIO_CHAN_INFO_HYSTERESIS),\ + .indexed =3D _indexed,\ + .channel =3D _channel,\ } + +/* Channel definitions (same order as prox_usage_ids) */ +static const struct iio_chan_spec prox_channels[] =3D { + PROX_CHANNEL(IIO_PROXIMITY, true, HID_HUMAN_PRESENCE), + PROX_CHANNEL(IIO_PROXIMITY, true, HID_HUMAN_PROXIMITY), + PROX_CHANNEL(IIO_ATTENTION, false, 0), }; =20 /* Adjust channel real bits based on report descriptor */ @@ -63,7 +83,7 @@ static int prox_read_raw(struct iio_dev *indio_dev, { struct prox_state *prox_state =3D iio_priv(indio_dev); struct hid_sensor_hub_device *hsdev; - int report_id =3D -1; + int report_id; u32 address; int ret_type; s32 min; @@ -72,29 +92,20 @@ static int prox_read_raw(struct iio_dev *indio_dev, *val2 =3D 0; switch (mask) { case IIO_CHAN_INFO_RAW: - switch (chan->scan_index) { - case CHANNEL_SCAN_INDEX_PRESENCE: - report_id =3D prox_state->prox_attr.report_id; - min =3D prox_state->prox_attr.logical_minimum; - address =3D HID_USAGE_SENSOR_HUMAN_PRESENCE; - hsdev =3D prox_state->common_attributes.hsdev; - break; - default: - report_id =3D -1; - break; - } - if (report_id >=3D 0) { - hid_sensor_power_state(&prox_state->common_attributes, - true); - *val =3D sensor_hub_input_attr_get_raw_value( - hsdev, hsdev->usage, address, report_id, - SENSOR_HUB_SYNC, min < 0); - hid_sensor_power_state(&prox_state->common_attributes, - false); - } else { - *val =3D 0; + if (chan->scan_index >=3D prox_state->num_channels) return -EINVAL; - } + address =3D prox_state->channel2usage[chan->scan_index]; + report_id =3D prox_state->prox_attr[chan->scan_index].report_id; + hsdev =3D prox_state->common_attributes.hsdev; + min =3D prox_state->prox_attr[chan->scan_index].logical_minimum; + hid_sensor_power_state(&prox_state->common_attributes, true); + *val =3D sensor_hub_input_attr_get_raw_value(hsdev, + hsdev->usage, + address, + report_id, + SENSOR_HUB_SYNC, + min < 0); + hid_sensor_power_state(&prox_state->common_attributes, false); ret_type =3D IIO_VAL_INT; break; case IIO_CHAN_INFO_SCALE: @@ -104,7 +115,7 @@ static int prox_read_raw(struct iio_dev *indio_dev, break; case IIO_CHAN_INFO_OFFSET: *val =3D hid_sensor_convert_exponent( - prox_state->prox_attr.unit_expo); + prox_state->prox_attr[chan->scan_index].unit_expo); ret_type =3D IIO_VAL_INT; break; case IIO_CHAN_INFO_SAMP_FREQ: @@ -179,48 +190,63 @@ static int prox_capture_sample(struct hid_sensor_hub_= device *hsdev, { struct iio_dev *indio_dev =3D platform_get_drvdata(priv); struct prox_state *prox_state =3D iio_priv(indio_dev); - int ret =3D -EINVAL; - - switch (usage_id) { - case HID_USAGE_SENSOR_HUMAN_PRESENCE: - switch (raw_len) { - case 1: - prox_state->human_presence =3D *(u8 *)raw_data; - return 0; - case 4: - prox_state->human_presence =3D *(u32 *)raw_data; - return 0; - default: + int chan; + + for (chan =3D 0; chan < prox_state->num_channels; chan++) + if (prox_state->channel2usage[chan] =3D=3D usage_id) break; - } - break; + if (chan =3D=3D prox_state->num_channels) + return -EINVAL; + + switch (raw_len) { + case 1: + prox_state->human_presence[chan] =3D *(u8 *)raw_data; + return 0; + case 4: + prox_state->human_presence[chan] =3D *(u32 *)raw_data; + return 0; } =20 - return ret; + return -EINVAL; } =20 /* Parse report which is specific to an usage id*/ static int prox_parse_report(struct platform_device *pdev, struct hid_sensor_hub_device *hsdev, - struct iio_chan_spec *channels, - unsigned usage_id, struct prox_state *st) { + struct iio_chan_spec *channels =3D st->channels; + int index =3D 0; int ret; + int i; + + for (i =3D 0; i < MAX_CHANNELS; i++) { + u32 usage_id =3D prox_usage_ids[i]; + + ret =3D sensor_hub_input_get_attribute_info(hsdev, + HID_INPUT_REPORT, + hsdev->usage, + usage_id, + &st->prox_attr[index]); + if (ret < 0) + continue; + st->channel2usage[index] =3D usage_id; + st->scan_mask[0] |=3D BIT(index); + channels[index] =3D prox_channels[i]; + channels[index].scan_index =3D index; + prox_adjust_channel_bit_mask(channels, index, + st->prox_attr[index].size); + dev_dbg(&pdev->dev, "prox %x:%x\n", st->prox_attr[index].index, + st->prox_attr[index].report_id); + index++; + } =20 - ret =3D sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT, - usage_id, - HID_USAGE_SENSOR_HUMAN_PRESENCE, - &st->prox_attr); - if (ret < 0) + if (!index) return ret; - prox_adjust_channel_bit_mask(channels, CHANNEL_SCAN_INDEX_PRESENCE, - st->prox_attr.size); =20 - dev_dbg(&pdev->dev, "prox %x:%x\n", st->prox_attr.index, - st->prox_attr.report_id); + st->num_channels =3D index; =20 - return ret; + return 0; } =20 /* Function to initialize the processing for usage id */ @@ -251,22 +277,15 @@ static int hid_prox_probe(struct platform_device *pde= v) return ret; } =20 - indio_dev->channels =3D devm_kmemdup(&pdev->dev, prox_channels, - sizeof(prox_channels), GFP_KERNEL); - if (!indio_dev->channels) { - dev_err(&pdev->dev, "failed to duplicate channels\n"); - return -ENOMEM; - } - - ret =3D prox_parse_report(pdev, hsdev, - (struct iio_chan_spec *)indio_dev->channels, - hsdev->usage, prox_state); + ret =3D prox_parse_report(pdev, hsdev, prox_state); if (ret) { dev_err(&pdev->dev, "failed to setup attributes\n"); return ret; } =20 - indio_dev->num_channels =3D ARRAY_SIZE(prox_channels); + indio_dev->num_channels =3D prox_state->num_channels; + indio_dev->channels =3D prox_state->channels; + indio_dev->available_scan_masks =3D prox_state->scan_mask; indio_dev->info =3D &prox_info; indio_dev->name =3D name; indio_dev->modes =3D INDIO_DIRECT_MODE; --=20 2.47.0.163.g1226f6d8fa-goog