From patchwork Thu Jan 4 16:01:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13511272 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 40543249FD for ; Thu, 4 Jan 2024 16:02:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Rmb03sSN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1704384124; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=xkvrnuFw/q9xIboQjF01aKLnuVRD1vJaxu7o1bhy4U4=; b=Rmb03sSNpxRxkHTZ5+A+ixFrgDkbR1Ae6PmB9nAq9VbTVRsuWtwQKZiMdUAlC18SSVJGkW hAVbuYFw9WPa/VQJ+NtTbJlyqUjiKTZwvrYDFKfBwBR4XyYc87FNHwP+KE/hPYAT7Uo5C4 qLnpFYRW0/fWGy5L3DWnoHb6gvyqy6o= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-458-2lvlLVSzMZW-IZgwaisRQA-1; Thu, 04 Jan 2024 11:02:01 -0500 X-MC-Unique: 2lvlLVSzMZW-IZgwaisRQA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8A0F4185A780; Thu, 4 Jan 2024 16:02:01 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.192.122]) by smtp.corp.redhat.com (Postfix) with ESMTP id C4C19492BC7; Thu, 4 Jan 2024 16:02:00 +0000 (UTC) From: Hans de Goede To: Jonathan Cameron Cc: Hans de Goede , Lars-Peter Clausen , linux-iio@vger.kernel.org Subject: [PATCH] iio: accel: da280: Simplify id-matching Date: Thu, 4 Jan 2024 17:01:52 +0100 Message-ID: <20240104160152.304100-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 da280_match_acpi_device() is a DIY version of acpi_device_get_match_data(), so it can be dropped. And things can be simplified further by using i2c_get_match_data() which will also check i2c_client_id style ids. Signed-off-by: Hans de Goede --- Changes in v2: - Add a new da280_match_data struct to hold the name + num_channels and use that instead of the da280_chipset enum - Error check i2c_get_match_data() returning NULL Handle i2c_get_match_data() returning NULL on missing match-data --- drivers/iio/accel/da280.c | 64 +++++++++++++++------------------------ 1 file changed, 25 insertions(+), 39 deletions(-) diff --git a/drivers/iio/accel/da280.c b/drivers/iio/accel/da280.c index 572bfe9694b0..756e2ea7c056 100644 --- a/drivers/iio/accel/da280.c +++ b/drivers/iio/accel/da280.c @@ -23,8 +23,6 @@ #define DA280_MODE_ENABLE 0x1e #define DA280_MODE_DISABLE 0x9e -enum da280_chipset { da217, da226, da280 }; - /* * a value of + or -4096 corresponds to + or - 1G * scale = 9.81 / 4096 = 0.002395019 @@ -47,6 +45,11 @@ static const struct iio_chan_spec da280_channels[] = { DA280_CHANNEL(DA280_REG_ACC_Z_LSB, Z), }; +struct da280_match_data { + const char *name; + int num_channels; +}; + struct da280_data { struct i2c_client *client; }; @@ -89,17 +92,6 @@ static const struct iio_info da280_info = { .read_raw = da280_read_raw, }; -static enum da280_chipset da280_match_acpi_device(struct device *dev) -{ - const struct acpi_device_id *id; - - id = acpi_match_device(dev->driver->acpi_match_table, dev); - if (!id) - return -EINVAL; - - return (enum da280_chipset) id->driver_data; -} - static void da280_disable(void *client) { da280_enable(client, false); @@ -107,16 +99,21 @@ static void da280_disable(void *client) static int da280_probe(struct i2c_client *client) { - const struct i2c_device_id *id = i2c_client_get_device_id(client); - int ret; + const struct da280_match_data *match_data; struct iio_dev *indio_dev; struct da280_data *data; - enum da280_chipset chip; + int ret; ret = i2c_smbus_read_byte_data(client, DA280_REG_CHIP_ID); if (ret != DA280_CHIP_ID) return (ret < 0) ? ret : -ENODEV; + match_data = i2c_get_match_data(client); + if (!match_data) { + dev_err(&client->dev, "Error match-data not set\n"); + return -EINVAL; + } + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); if (!indio_dev) return -ENOMEM; @@ -127,23 +124,8 @@ static int da280_probe(struct i2c_client *client) indio_dev->info = &da280_info; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = da280_channels; - - if (ACPI_HANDLE(&client->dev)) { - chip = da280_match_acpi_device(&client->dev); - } else { - chip = id->driver_data; - } - - if (chip == da217) { - indio_dev->name = "da217"; - indio_dev->num_channels = 3; - } else if (chip == da226) { - indio_dev->name = "da226"; - indio_dev->num_channels = 2; - } else { - indio_dev->name = "da280"; - indio_dev->num_channels = 3; - } + indio_dev->num_channels = match_data->num_channels; + indio_dev->name = match_data->name; ret = da280_enable(client, true); if (ret < 0) @@ -168,17 +150,21 @@ static int da280_resume(struct device *dev) static DEFINE_SIMPLE_DEV_PM_OPS(da280_pm_ops, da280_suspend, da280_resume); +static const struct da280_match_data da217_match_data = { "da217", 3 }; +static const struct da280_match_data da226_match_data = { "da226", 2 }; +static const struct da280_match_data da280_match_data = { "da280", 3 }; + static const struct acpi_device_id da280_acpi_match[] = { - {"NSA2513", da217}, - {"MIRAACC", da280}, - {}, + { "NSA2513", (kernel_ulong_t)&da217_match_data }, + { "MIRAACC", (kernel_ulong_t)&da280_match_data }, + {} }; MODULE_DEVICE_TABLE(acpi, da280_acpi_match); static const struct i2c_device_id da280_i2c_id[] = { - { "da217", da217 }, - { "da226", da226 }, - { "da280", da280 }, + { "da217", (kernel_ulong_t)&da217_match_data }, + { "da226", (kernel_ulong_t)&da226_match_data }, + { "da280", (kernel_ulong_t)&da280_match_data }, {} }; MODULE_DEVICE_TABLE(i2c, da280_i2c_id);