From patchwork Wed Oct 20 07:35:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Maslov X-Patchwork-Id: 12571795 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0CB7C433EF for ; Wed, 20 Oct 2021 07:40:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C3366115A for ; Wed, 20 Oct 2021 07:40:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229547AbhJTHnG (ORCPT ); Wed, 20 Oct 2021 03:43:06 -0400 Received: from zg8tmtyylji0my4xnjeumjiw.icoremail.net ([162.243.161.220]:49611 "HELO zg8tmtyylji0my4xnjeumjiw.icoremail.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S229544AbhJTHnG (ORCPT ); Wed, 20 Oct 2021 03:43:06 -0400 X-Greylist: delayed 317 seconds by postgrey-1.27 at vger.kernel.org; Wed, 20 Oct 2021 03:43:06 EDT Received: from icoremail.net (unknown [10.12.1.20]) by hzbj-icmmx-1 (Coremail) with SMTP id AQAAfwCXK7iBxm9hLFeyBQ--.2534S2; Wed, 20 Oct 2021 15:34:25 +0800 (CST) Received: from ubuntu-laptop.lan (unknown [46.253.189.78]) by mail (Coremail) with SMTP id AQAAfwCXd166xm9h6hkAAA--.1111S3; Wed, 20 Oct 2021 15:35:24 +0800 (CST) From: Maslov Dmitry To: jic23@kernel.org, lars@metafoo.de, linux-iio@vger.kernel.org Cc: Maslov Dmitry Subject: [PATCH] iio: light: ltr501: Added ltr303 driver support Date: Wed, 20 Oct 2021 09:35:18 +0200 Message-Id: <20211020073518.3191-1-maslovdmitry@seeed.cc> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAfwCXd166xm9h6hkAAA--.1111S3 X-CM-SenderInfo: xpdvz0pygpx31u162vxhhghubf/ Authentication-Results: hzbj-icmmx-1; spf=neutral smtp.mail=maslovdmit ry@seeed.cc; X-Coremail-Antispam: 1Uk129KBjvJXoWxAr47Kw45Cw15Kw1rWrWkCrg_yoWrGr1DpF ZxCF15tF4rAF4fGF4DJrnYvFy3Kr4xC3y2vryxKw12yay7Gwn8Wa43J34akFn7JrZFqr4Y qrZFqFWj9FZ8CaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj DUYxn0WfASr-VFAU7a7-sFnT9fnUUIcSsGvfJ3UbIYCTnIWIevJa73UjIFyTuYvj4RJUUU UUUUU Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Previously ltr501 driver supported a number of light and, proximity sensors including ltr501, ltr559 and ltr301. This adds support for another light sensor ltr303 used in Seeed Studio reTerminal, a carrier board for Raspberry Pi 4 CM. Signed-off-by: Maslov Dmitry --- drivers/iio/light/ltr501.c | 46 +++++++++++++++++++++++++++++++++++--- 1 file changed, 43 insertions(+), 3 deletions(-) diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index 7e51aaac0bf..733f9224bd1 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * ltr501.c - Support for Lite-On LTR501 ambient light and proximity sensor + * ltr.c - Support for Lite-On LTR501, LTR509, LTR301, LTR303 ambient light + * and proximity sensors (only LTR5xx) * * Copyright 2014 Peter Meerwald * @@ -16,6 +17,8 @@ #include #include #include +#include +#include #include #include @@ -65,11 +68,15 @@ #define LTR501_ALS_DEF_PERIOD 500000 #define LTR501_PS_DEF_PERIOD 100000 +#define LTR501_ALS_DEF_GAIN (BIT(4) | BIT(3) | BIT(2)) + #define LTR501_REGMAP_NAME "ltr501_regmap" #define LTR501_LUX_CONV(vis_coeff, vis_data, ir_coeff, ir_data) \ ((vis_coeff * vis_data) - (ir_coeff * ir_data)) +static const struct i2c_device_id ltr501_id[]; + static const int int_time_mapping[] = {100000, 50000, 200000, 400000}; static const struct reg_field reg_field_it = @@ -98,6 +105,9 @@ enum { ltr501 = 0, ltr559, ltr301, + ltr303, + + ltr_max }; struct ltr501_gain { @@ -1231,6 +1241,18 @@ static const struct ltr501_chip_info ltr501_chip_info_tbl[] = { .channels = ltr301_channels, .no_channels = ARRAY_SIZE(ltr301_channels), }, + [ltr303] = { + .partid = 0x0A, + .als_gain = ltr559_als_gain_tbl, + .als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl), + .als_mode_active = BIT(0), + .als_gain_mask = BIT(2) | BIT(3) | BIT(4), + .als_gain_shift = 2, + .info = <r301_info, + .info_no_irq = <r301_info_no_irq, + .channels = ltr301_channels, + .no_channels = ARRAY_SIZE(ltr301_channels), + }, }; static int ltr501_write_contr(struct ltr501_data *data, u8 als_val, u8 ps_val) @@ -1337,7 +1359,7 @@ static int ltr501_init(struct ltr501_data *data) if (ret < 0) return ret; - data->als_contr = status | data->chip_info->als_mode_active; + data->als_contr = status | data->chip_info->als_mode_active | LTR501_ALS_DEF_GAIN; ret = regmap_read(data->regmap, LTR501_PS_CONTR, &status); if (ret < 0) @@ -1504,7 +1526,23 @@ static int ltr501_probe(struct i2c_client *client, if (ret < 0) return ret; - if (id) { + if (client->dev.of_node) { + int i = 0; + + chip_idx = (int)of_device_get_match_data(&client->dev); + for (i = 0; i < ltr_max; i++) { + if (ltr501_id[i].name == NULL) { + break; + } + if (ltr501_id[i].driver_data == chip_idx) { + name = ltr501_id[i].name; + break; + } + } + if (i >= ltr_max) { + name = LTR501_DRV_NAME; + } + } else if (id) { name = id->name; chip_idx = id->driver_data; } else if (ACPI_HANDLE(&client->dev)) { @@ -1597,6 +1635,7 @@ static const struct acpi_device_id ltr_acpi_match[] = { {"LTER0501", ltr501}, {"LTER0559", ltr559}, {"LTER0301", ltr301}, + {"LTER0303", ltr303}, { }, }; MODULE_DEVICE_TABLE(acpi, ltr_acpi_match); @@ -1605,6 +1644,7 @@ static const struct i2c_device_id ltr501_id[] = { { "ltr501", ltr501}, { "ltr559", ltr559}, { "ltr301", ltr301}, + { "ltr303", ltr303}, { } }; MODULE_DEVICE_TABLE(i2c, ltr501_id);