From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D0C8CA9EB5 for ; Mon, 21 Oct 2019 05:54:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4FFE920700 for ; Mon, 21 Oct 2019 05:54:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="FyBf75UP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727391AbfJUFyn (ORCPT ); Mon, 21 Oct 2019 01:54:43 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:34569 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727300AbfJUFyj (ORCPT ); Mon, 21 Oct 2019 01:54:39 -0400 Received: by mail-pf1-f196.google.com with SMTP id b128so7715950pfa.1 for ; Sun, 20 Oct 2019 22:54:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=aE7g7XjdeY6aUmgaD/ZeDVZpIgEzF6Nh2eVf/ntj2P0=; b=FyBf75UPec4YJENsnoJ52sSw2ts45Sid1X5tNKB7c9F8KTK6b7wO5IR3iAWALH3yYQ j6N7tK2P/4TVMZaiwhcim5NwYL5zuu+WHEVQfSNgO806ivlVxHQQwwutR+7ZREjTvZ8M wRdEMgBQ2dbzETWddN9j5x6MOavS+vukp812k= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=aE7g7XjdeY6aUmgaD/ZeDVZpIgEzF6Nh2eVf/ntj2P0=; b=RRiG2HpQP2dtIujBpILxan7t0KrXgpwcCjm1aHMO6WruNyGruqdVnPBSpfQ4L9Fy4T gydifuuWtrI9yiBG3yZTAUYE5GZrm8L97bWpx22FEiDcSiz73I0crXlw/5L7/RvAyJLX wpV9ge2XG2sGlrxGJ9mddaddbdiAhEcJKEPu+HfcpB0H9YHMgwby/f3H6rsFRPay4IWI qKQ5KycJZslDiXtFzoOJP/kb4AmM4RCQCTMJ4R2LgLviAVfx+bCKkYmIVTpwMv93fGLC Cr3TBc8oei8whkaindlapaojwARfGoJmdLPMXJH/KPQ/aYSnPovI62dBJPGUQZTLj1KK JF5w== X-Gm-Message-State: APjAAAUZHDZBxURc51WUhw+BIAjrBru8MLfgbzxF3fTNaFLoVMeWzbAp aR5SM1t90A/74QctpRxrcYGp+Q== X-Google-Smtp-Source: APXvYqxa6lqrq7suP2Tps/yth0GYAA7igkwh43zo/+6iHkit6clEm1WP1xZLF3sO1Cx8Vz3s0cnF5g== X-Received: by 2002:a17:90a:e397:: with SMTP id b23mr27115884pjz.51.1571637276872; Sun, 20 Oct 2019 22:54:36 -0700 (PDT) Received: from localhost ([2620:15c:202:1:3c8f:512b:3522:dfaf]) by smtp.gmail.com with ESMTPSA id q30sm14244649pja.18.2019.10.20.22.54.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 20 Oct 2019 22:54:36 -0700 (PDT) From: Gwendal Grignou To: briannorris@chromium.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, lee.jones@linaro.org, bleung@chromium.org, enric.balletbo@collabora.com, dianders@chromium.org, groeck@chromium.org, fabien.lahoudere@collabora.com Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, Gwendal Grignou Subject: [PATCH v2 16/18] iio: cros_ec: Expose hwfifo_timeout Date: Sun, 20 Oct 2019 22:54:01 -0700 Message-Id: <20191021055403.67849-17-gwendal@chromium.org> X-Mailer: git-send-email 2.23.0.866.gb869b98d4c-goog In-Reply-To: <20191021055403.67849-1-gwendal@chromium.org> References: <20191021055403.67849-1-gwendal@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Expose EC minimal interrupt period through buffer/hwfifo_timeout: - Maximal timeout is limited to 65s. - When timeout for all sensors is set to 0, EC will not send events, even if the sensor sampling rate is greater than 0. - curr_sample_rate is no more, the pm functions have been removed. Rename frequency to sampling_frequency to match IIO ABI. Signed-off-by: Gwendal Grignou --- Changes in v2: - Register fifo_attributes in sensors drivers that previously advertise that feature. .../common/cros_ec_sensors/cros_ec_sensors.c | 4 +- .../cros_ec_sensors/cros_ec_sensors_core.c | 95 ++++++++++++++----- drivers/iio/light/cros_ec_light_prox.c | 6 +- drivers/iio/pressure/cros_ec_baro.c | 6 +- .../linux/iio/common/cros_ec_sensors_core.h | 4 +- 5 files changed, 85 insertions(+), 30 deletions(-) diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c index 2eb4bb254fbde..8c57a3ade78ed 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c @@ -236,6 +236,9 @@ static int cros_ec_sensors_probe(struct platform_device *pdev) if (ret) return ret; + iio_buffer_set_attrs(indio_dev->buffer, + cros_ec_sensor_fifo_attributes); + indio_dev->info = &ec_sensors_info; state = iio_priv(indio_dev); for (channel = state->channels, i = CROS_EC_SENSOR_X; @@ -247,7 +250,6 @@ static int cros_ec_sensors_probe(struct platform_device *pdev) BIT(IIO_CHAN_INFO_CALIBSCALE); channel->info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SCALE) | - BIT(IIO_CHAN_INFO_FREQUENCY) | BIT(IIO_CHAN_INFO_SAMP_FREQ); channel->info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_SAMP_FREQ); diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index e89c355bb4b35..92128c67a166e 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -84,6 +85,77 @@ static void get_default_min_max_freq(enum motionsensor_type type, } } +static int cros_ec_sensor_set_ec_rate(struct cros_ec_sensors_core_state *st, + int rate) +{ + int ret; + + if (rate > U16_MAX) + rate = U16_MAX; + + mutex_lock(&st->cmd_lock); + st->param.cmd = MOTIONSENSE_CMD_EC_RATE; + st->param.ec_rate.data = rate; + ret = cros_ec_motion_send_host_cmd(st, 0); + mutex_unlock(&st->cmd_lock); + return ret; +} + +static ssize_t cros_ec_sensor_set_report_latency(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct cros_ec_sensors_core_state *st = iio_priv(indio_dev); + int integer, fract, ret; + int latency; + + ret = iio_str_to_fixpoint(buf, 100000, &integer, &fract); + if (ret) + return ret; + + /* EC rate is in ms. */ + latency = integer * 1000 + fract / 1000; + ret = cros_ec_sensor_set_ec_rate(st, latency); + if (ret < 0) + return ret; + + return len; +} + +static ssize_t cros_ec_sensor_get_report_latency(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct cros_ec_sensors_core_state *st = iio_priv(indio_dev); + int latency, ret; + + mutex_lock(&st->cmd_lock); + st->param.cmd = MOTIONSENSE_CMD_EC_RATE; + st->param.ec_rate.data = EC_MOTION_SENSE_NO_VALUE; + + ret = cros_ec_motion_send_host_cmd(st, 0); + latency = st->resp->ec_rate.ret; + mutex_unlock(&st->cmd_lock); + if (ret < 0) + return ret; + + return sprintf(buf, "%d.%06u\n", + latency / 1000, + (latency % 1000) * 1000); +} + +static IIO_DEVICE_ATTR(hwfifo_timeout, 0644, + cros_ec_sensor_get_report_latency, + cros_ec_sensor_set_report_latency, 0); + +const struct attribute *cros_ec_sensor_fifo_attributes[] = { + &iio_dev_attr_hwfifo_timeout.dev_attr.attr, + NULL, +}; +EXPORT_SYMBOL_GPL(cros_ec_sensor_fifo_attributes); + int cros_ec_sensors_push_data( struct iio_dev *indio_dev, s16 *data, @@ -609,18 +681,6 @@ int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st, switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: - st->param.cmd = MOTIONSENSE_CMD_EC_RATE; - st->param.ec_rate.data = - EC_MOTION_SENSE_NO_VALUE; - - ret = cros_ec_motion_send_host_cmd(st, 0); - if (ret) - break; - - *val = st->resp->ec_rate.ret; - ret = IIO_VAL_INT; - break; - case IIO_CHAN_INFO_FREQUENCY: st->param.cmd = MOTIONSENSE_CMD_SENSOR_ODR; st->param.sensor_odr.data = EC_MOTION_SENSE_NO_VALUE; @@ -690,7 +750,7 @@ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st, int ret; switch (mask) { - case IIO_CHAN_INFO_FREQUENCY: + case IIO_CHAN_INFO_SAMP_FREQ: st->param.cmd = MOTIONSENSE_CMD_SENSOR_ODR; st->param.sensor_odr.data = val; @@ -699,15 +759,6 @@ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st, ret = cros_ec_motion_send_host_cmd(st, 0); break; - case IIO_CHAN_INFO_SAMP_FREQ: - st->param.cmd = MOTIONSENSE_CMD_EC_RATE; - st->param.ec_rate.data = val; - - ret = cros_ec_motion_send_host_cmd(st, 0); - if (ret) - break; - st->curr_sampl_freq = val; - break; default: ret = -EINVAL; break; diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c index 6bac02cdd898a..059aaddc91fd8 100644 --- a/drivers/iio/light/cros_ec_light_prox.c +++ b/drivers/iio/light/cros_ec_light_prox.c @@ -183,6 +183,9 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev) if (ret) return ret; + iio_buffer_set_attrs(indio_dev->buffer, + cros_ec_sensor_fifo_attributes); + indio_dev->info = &cros_ec_light_prox_info; state = iio_priv(indio_dev); state->core.type = state->core.resp->info.type; @@ -191,8 +194,7 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev) /* Common part */ channel->info_mask_shared_by_all = - BIT(IIO_CHAN_INFO_SAMP_FREQ) | - BIT(IIO_CHAN_INFO_FREQUENCY); + BIT(IIO_CHAN_INFO_SAMP_FREQ); channel->info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_SAMP_FREQ); channel->scan_type.realbits = CROS_EC_SENSOR_BITS; diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c index fb7daeb4b29f9..e933a1bb64d4b 100644 --- a/drivers/iio/pressure/cros_ec_baro.c +++ b/drivers/iio/pressure/cros_ec_baro.c @@ -139,6 +139,9 @@ static int cros_ec_baro_probe(struct platform_device *pdev) if (ret) return ret; + iio_buffer_set_attrs(indio_dev->buffer, + cros_ec_sensor_fifo_attributes); + indio_dev->info = &cros_ec_baro_info; state = iio_priv(indio_dev); state->core.type = state->core.resp->info.type; @@ -148,8 +151,7 @@ static int cros_ec_baro_probe(struct platform_device *pdev) channel->info_mask_separate = BIT(IIO_CHAN_INFO_RAW); channel->info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SCALE) | - BIT(IIO_CHAN_INFO_SAMP_FREQ) | - BIT(IIO_CHAN_INFO_FREQUENCY); + BIT(IIO_CHAN_INFO_SAMP_FREQ); channel->scan_type.realbits = CROS_EC_SENSOR_BITS; channel->scan_type.storagebits = CROS_EC_SENSOR_BITS; channel->scan_type.shift = 0; diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h index db3da7ffcc376..387ca9e61dac8 100644 --- a/include/linux/iio/common/cros_ec_sensors_core.h +++ b/include/linux/iio/common/cros_ec_sensors_core.h @@ -51,7 +51,6 @@ typedef irqreturn_t (*cros_ec_sensors_capture_t)(int irq, void *p); * the timestamp. The timestamp is always last and * is always 8-byte aligned. * @read_ec_sensors_data: function used for accessing sensors values - * @cuur_sampl_freq: current sampling period */ struct cros_ec_sensors_core_state { struct cros_ec_device *ec; @@ -74,8 +73,6 @@ struct cros_ec_sensors_core_state { int (*read_ec_sensors_data)(struct iio_dev *indio_dev, unsigned long scan_mask, s16 *data); - int curr_sampl_freq; - /* Table of known available frequencies : 0, Min and Max in mHz */ int frequencies[3]; }; @@ -118,5 +115,6 @@ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st, /* List of extended channel specification for all sensors */ extern const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[]; +extern const struct attribute *cros_ec_sensor_fifo_attributes[]; #endif /* __CROS_EC_SENSORS_CORE_H */ -- 2.23.0.866.gb869b98d4c-goog