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,USER_AGENT_GIT autolearn=ham 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 0B129C4740C for ; Sun, 22 Sep 2019 17:51:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA8A421479 for ; Sun, 22 Sep 2019 17:51:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="XBKtoVOg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387763AbfIVRvH (ORCPT ); Sun, 22 Sep 2019 13:51:07 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:42021 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388250AbfIVRvG (ORCPT ); Sun, 22 Sep 2019 13:51:06 -0400 Received: by mail-pg1-f196.google.com with SMTP id z12so6546041pgp.9 for ; Sun, 22 Sep 2019 10:51:06 -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=FPmEKD8Tb7q7WBZ4NKNyETZLPERw0/VtWiOqorzJ9fE=; b=XBKtoVOgOJtFsZBKJvh+5DU0q4oq+hBWMDbYpNokabphuBRlaXNz/s33XQQ6NmgNxB JWrRbtESpbawcxpqdd/oifN+yhwd64g8pmkbbWMG6Uf0u0sKN5h8aAfzyQxiPIa6DZy0 Uj61Qp/k65t5JP2BjfBGVKh5dLr4+erXHuXiY= 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=FPmEKD8Tb7q7WBZ4NKNyETZLPERw0/VtWiOqorzJ9fE=; b=TXwXyPMxfNCJje7McmSSqG+n+Fd51K0GMPECVo6vto1nX0Nhexr3ZPXdz70+VE/lB6 r5GKq7zNHtnh2dO1y+hqgz9y9nTqB1vdiguNjpbYA+5VeryR0BQ6dMi+OED0yYMMeaRn mCY1zvS53VncMS9CnXAZkGU4ERw3Cll3U4Ne5242Mr0rwQKiKmXZdlH0FSez6sjQ3s7N tx5Ty7jDdjeOcGRfR45cQeFv5kD3fBSdqKCBIn3ALkF7es2VgqFJG/U7KiqMi+UNXYlT QQdKvuppC8HnxKz2kkEAnd4QctOKlTJPSJBSJARnG/YLMrMYgcjUvsQ16qnpYzIrGD96 R+fA== X-Gm-Message-State: APjAAAUb9qh7j4CFpwOR9O9qHTd1paUMZxIcnY58gTM0XsQOR17Z7V6D twLSmMO+fvvTOlFmbnLynpQu6Q== X-Google-Smtp-Source: APXvYqzycCQfQAxTPVQLad6e1h8CqkAuCJBaVdaWdqj2HYCy8OeWZaXKjGEjonjl1lZeIr57qVn8yg== X-Received: by 2002:a63:5050:: with SMTP id q16mr20611185pgl.451.1569174665748; Sun, 22 Sep 2019 10:51:05 -0700 (PDT) Received: from localhost ([2620:15c:202:1:3c8f:512b:3522:dfaf]) by smtp.gmail.com with ESMTPSA id 69sm9994888pfb.145.2019.09.22.10.51.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 22 Sep 2019 10:51:05 -0700 (PDT) From: Gwendal Grignou To: 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 03/13] platform/mfd:iio: cros_ec: Register sensor through sensorhub Date: Sun, 22 Sep 2019 10:50:11 -0700 Message-Id: <20190922175021.53449-4-gwendal@chromium.org> X-Mailer: git-send-email 2.23.0.351.gc4317032e6-goog In-Reply-To: <20190922175021.53449-1-gwendal@chromium.org> References: <20190922175021.53449-1-gwendal@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org - Add sensorhub include file - Remove duplicate code in mfd, since mfd just register cros_ec_sensorhub if at least one sensor is present - Change iio cros_ec driver to get the pointer to the cros_ec_dev through cros_ec_sensorhub. Signed-off-by: Gwendal Grignou --- drivers/iio/accel/cros_ec_accel_legacy.c | 4 +- .../common/cros_ec_sensors/cros_ec_sensors.c | 4 +- .../cros_ec_sensors/cros_ec_sensors_core.c | 4 +- drivers/iio/light/cros_ec_light_prox.c | 6 +- drivers/mfd/cros_ec_dev.c | 203 ++---------------- drivers/platform/chrome/cros_ec_sensorhub.c | 2 +- include/linux/platform_data/cros_ec_proto.h | 8 - .../linux/platform_data/cros_ec_sensorhub.h | 8 + 8 files changed, 34 insertions(+), 205 deletions(-) diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c index fcc3f999e482..c9af6fa0670d 100644 --- a/drivers/iio/accel/cros_ec_accel_legacy.c +++ b/drivers/iio/accel/cros_ec_accel_legacy.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #define DRV_NAME "cros-ec-accel-legacy" @@ -163,7 +164,8 @@ static const struct iio_chan_spec cros_ec_accel_legacy_channels[] = { static int cros_ec_accel_legacy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct cros_ec_dev *ec = dev_get_drvdata(dev->parent); + struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent); + struct cros_ec_dev *ec = sensor_hub->ec; struct iio_dev *indio_dev; struct cros_ec_sensors_core_state *state; int ret; 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 a6987726eeb8..5bd6f54afc42 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -222,7 +223,8 @@ static const struct iio_info ec_sensors_info = { static int cros_ec_sensors_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent); + struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent); + struct cros_ec_dev *ec_dev = sensor_hub->ec; struct iio_dev *indio_dev; struct cros_ec_sensors_state *state; struct iio_chan_spec *channel; 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 d2609e6feda4..81a7f692de2f 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 @@ -18,6 +18,7 @@ #include #include #include +#include #include static char *cros_ec_loc[] = { @@ -88,7 +89,8 @@ int cros_ec_sensors_core_init(struct platform_device *pdev, { struct device *dev = &pdev->dev; struct cros_ec_sensors_core_state *state = iio_priv(indio_dev); - struct cros_ec_dev *ec = dev_get_drvdata(pdev->dev.parent); + struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent); + struct cros_ec_dev *ec = sensor_hub->ec; struct cros_ec_sensor_platform *sensor_platform = dev_get_platdata(dev); u32 ver_mask; int ret, i; diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c index c5263b563fc1..205effc1f404 100644 --- a/drivers/iio/light/cros_ec_light_prox.c +++ b/drivers/iio/light/cros_ec_light_prox.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -169,13 +170,14 @@ static const struct iio_info cros_ec_light_prox_info = { static int cros_ec_light_prox_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent); + struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent); + struct cros_ec_dev *ec = sensor_hub->ec; struct iio_dev *indio_dev; struct cros_ec_light_prox_state *state; struct iio_chan_spec *channel; int ret; - if (!ec_dev || !ec_dev->ec_dev) { + if (!ec || !ec->ec_dev) { dev_warn(dev, "No CROS EC device found.\n"); return -EINVAL; } diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c index 3be80183ccaa..3a583d3503ca 100644 --- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -78,6 +78,10 @@ static const struct mfd_cell cros_ec_rtc_cells[] = { { .name = "cros-ec-rtc", }, }; +static const struct mfd_cell cros_ec_sensorhub_cells[] = { + { .name = "cros-ec-sensorhub", }, +}; + static const struct mfd_cell cros_usbpd_charger_cells[] = { { .name = "cros-usbpd-charger", }, { .name = "cros-usbpd-logger", }, @@ -208,192 +212,6 @@ int cros_ec_get_sensor_count(struct cros_ec_dev *ec) } EXPORT_SYMBOL_GPL(cros_ec_get_sensor_count); -static void cros_ec_sensors_register(struct cros_ec_dev *ec) -{ - /* - * Issue a command to get the number of sensor reported. - * Build an array of sensors driver and register them all. - */ - int ret, i, id, sensor_num; - struct mfd_cell *sensor_cells; - struct cros_ec_sensor_platform *sensor_platforms; - int sensor_type[MOTIONSENSE_TYPE_MAX]; - struct ec_params_motion_sense *params; - struct ec_response_motion_sense *resp; - struct cros_ec_command *msg; - - msg = kzalloc(sizeof(struct cros_ec_command) + - max(sizeof(*params), sizeof(*resp)), GFP_KERNEL); - if (msg == NULL) - return; - - msg->version = 2; - msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset; - msg->outsize = sizeof(*params); - msg->insize = sizeof(*resp); - - params = (struct ec_params_motion_sense *)msg->data; - params->cmd = MOTIONSENSE_CMD_DUMP; - - ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); - if (ret < 0) { - dev_warn(ec->dev, "cannot get EC sensor information: %d/%d\n", - ret, msg->result); - goto error; - } - - resp = (struct ec_response_motion_sense *)msg->data; - sensor_num = resp->dump.sensor_count; - /* - * Allocate 2 extra sensors if lid angle sensor and/or FIFO are needed. - */ - sensor_cells = kcalloc(sensor_num + 2, sizeof(struct mfd_cell), - GFP_KERNEL); - if (sensor_cells == NULL) - goto error; - - sensor_platforms = kcalloc(sensor_num, - sizeof(struct cros_ec_sensor_platform), - GFP_KERNEL); - if (sensor_platforms == NULL) - goto error_platforms; - - memset(sensor_type, 0, sizeof(sensor_type)); - id = 0; - for (i = 0; i < sensor_num; i++) { - params->cmd = MOTIONSENSE_CMD_INFO; - params->info.sensor_num = i; - ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg); - if (ret < 0) { - dev_warn(ec->dev, "no info for EC sensor %d : %d/%d\n", - i, ret, msg->result); - continue; - } - switch (resp->info.type) { - case MOTIONSENSE_TYPE_ACCEL: - sensor_cells[id].name = "cros-ec-accel"; - break; - case MOTIONSENSE_TYPE_BARO: - sensor_cells[id].name = "cros-ec-baro"; - break; - case MOTIONSENSE_TYPE_GYRO: - sensor_cells[id].name = "cros-ec-gyro"; - break; - case MOTIONSENSE_TYPE_MAG: - sensor_cells[id].name = "cros-ec-mag"; - break; - case MOTIONSENSE_TYPE_PROX: - sensor_cells[id].name = "cros-ec-prox"; - break; - case MOTIONSENSE_TYPE_LIGHT: - sensor_cells[id].name = "cros-ec-light"; - break; - case MOTIONSENSE_TYPE_ACTIVITY: - sensor_cells[id].name = "cros-ec-activity"; - break; - default: - dev_warn(ec->dev, "unknown type %d\n", resp->info.type); - continue; - } - sensor_platforms[id].sensor_num = i; - sensor_cells[id].id = sensor_type[resp->info.type]; - sensor_cells[id].platform_data = &sensor_platforms[id]; - sensor_cells[id].pdata_size = - sizeof(struct cros_ec_sensor_platform); - - sensor_type[resp->info.type]++; - id++; - } - - if (sensor_type[MOTIONSENSE_TYPE_ACCEL] >= 2) - ec->has_kb_wake_angle = true; - - if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) { - sensor_cells[id].name = "cros-ec-ring"; - id++; - } - if (cros_ec_check_features(ec, - EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS)) { - sensor_cells[id].name = "cros-ec-lid-angle"; - id++; - } - - ret = mfd_add_devices(ec->dev, 0, sensor_cells, id, - NULL, 0, NULL); - if (ret) - dev_err(ec->dev, "failed to add EC sensors\n"); - - kfree(sensor_platforms); -error_platforms: - kfree(sensor_cells); -error: - kfree(msg); -} - -static struct cros_ec_sensor_platform sensor_platforms[] = { - { .sensor_num = 0 }, - { .sensor_num = 1 } -}; - -static const struct mfd_cell cros_ec_accel_legacy_cells[] = { - { - .name = "cros-ec-accel-legacy", - .platform_data = &sensor_platforms[0], - .pdata_size = sizeof(struct cros_ec_sensor_platform), - }, - { - .name = "cros-ec-accel-legacy", - .platform_data = &sensor_platforms[1], - .pdata_size = sizeof(struct cros_ec_sensor_platform), - } -}; - -static void cros_ec_accel_legacy_register(struct cros_ec_dev *ec) -{ - struct cros_ec_device *ec_dev = ec->ec_dev; - u8 status; - int ret; - - /* - * ECs that need legacy support are the main EC, directly connected to - * the AP. - */ - if (ec->cmd_offset != 0) - return; - - /* - * Check if EC supports direct memory reads and if EC has - * accelerometers. - */ - if (ec_dev->cmd_readmem) { - ret = ec_dev->cmd_readmem(ec_dev, EC_MEMMAP_ACC_STATUS, 1, - &status); - if (ret < 0) { - dev_warn(ec->dev, "EC direct read error.\n"); - return; - } - - /* Check if EC has accelerometers. */ - if (!(status & EC_MEMMAP_ACC_STATUS_PRESENCE_BIT)) { - dev_info(ec->dev, "EC does not have accelerometers.\n"); - return; - } - } - - /* - * The device may still support accelerometers: - * it would be an older ARM based device that do not suppor the - * EC_CMD_GET_FEATURES command. - * - * Register 2 accelerometers, we will fail in the IIO driver if there - * are no sensors. - */ - ret = mfd_add_hotplug_devices(ec->dev, cros_ec_accel_legacy_cells, - ARRAY_SIZE(cros_ec_accel_legacy_cells)); - if (ret) - dev_err(ec_dev->dev, "failed to add EC sensors\n"); -} - static int ec_device_probe(struct platform_device *pdev) { int retval = -ENOMEM; @@ -449,11 +267,14 @@ static int ec_device_probe(struct platform_device *pdev) goto failed; /* check whether this EC is a sensor hub. */ - if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) - cros_ec_sensors_register(ec); - else - /* Workaroud for older EC firmware */ - cros_ec_accel_legacy_register(ec); + if (cros_ec_get_sensor_count(ec) > 0) { + retval = mfd_add_hotplug_devices(ec->dev, + cros_ec_sensorhub_cells, + ARRAY_SIZE(cros_ec_sensorhub_cells)); + if (retval) + dev_err(ec->dev, "failed to add %s subdevice: %d\n", + cros_ec_sensorhub_cells->name, retval); + } /* * The following subdevices can be detected by sending the diff --git a/drivers/platform/chrome/cros_ec_sensorhub.c b/drivers/platform/chrome/cros_ec_sensorhub.c index 80688018ef66..01f11ed611fb 100644 --- a/drivers/platform/chrome/cros_ec_sensorhub.c +++ b/drivers/platform/chrome/cros_ec_sensorhub.c @@ -181,7 +181,7 @@ static int cros_ec_sensorhub_probe(struct platform_device *pdev) data->ec = ec; dev_set_drvdata(dev, data); - /* check whether this EC is a sensor hub. */ + /* Check whether this EC is a sensor hub. */ if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) { ret = cros_ec_sensors_register(dev, ec); } else { diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h index eab7036cda09..e91e3fcb0348 100644 --- a/include/linux/platform_data/cros_ec_proto.h +++ b/include/linux/platform_data/cros_ec_proto.h @@ -167,14 +167,6 @@ struct cros_ec_device { struct platform_device *pd; }; -/** - * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information. - * @sensor_num: Id of the sensor, as reported by the EC. - */ -struct cros_ec_sensor_platform { - u8 sensor_num; -}; - /** * struct cros_ec_platform - ChromeOS EC platform information. * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...) diff --git a/include/linux/platform_data/cros_ec_sensorhub.h b/include/linux/platform_data/cros_ec_sensorhub.h index a8b64ecf5b9b..9295eabb16f6 100644 --- a/include/linux/platform_data/cros_ec_sensorhub.h +++ b/include/linux/platform_data/cros_ec_sensorhub.h @@ -11,6 +11,14 @@ #include +/** + * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information. + * @sensor_num: Id of the sensor, as reported by the EC. + */ +struct cros_ec_sensor_platform { + u8 sensor_num; +}; + /** * struct cros_ec_sensorhub - Sensor Hub device data. */ -- 2.23.0.351.gc4317032e6-goog