From patchwork Sat May 11 12:12:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felix Kaechele X-Patchwork-Id: 796276 Received: from mail.kaechele.ca (mail.kaechele.ca [54.39.219.105]) (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 D0FEF55E4F; Sat, 11 May 2024 12:12:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.39.219.105 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715429575; cv=none; b=kICOxoO+obTfJOI1grW5Hx9sJCqIQDfHYntglOwnfaGmBGejNYJaMToMENna8cHJTqXNHyWY7jIKRg5kX2ByCrb1gBMJeDKBWVfsciG8FQYpNgPf6LB481Qi4UT76hSb6N+pTyckUnDKMavBxZFi2EUpS3pnCSZ2zDraT6gvwuQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715429575; c=relaxed/simple; bh=C7UmS7BG6581OBKC1o9QPJAZROxpy/zSTtw95yHP4Yg=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Rjh41CGlyLPLItcWScuRUItbhFKa6mxuMVx90S7HbmgYCtmjI78mNYBkBdjO0OFSuAT7MZnHVSxP77WRFrCa06ojhY0bpAX6V/HOi9kufgSLs24zsCs8cW+f0rPzd0k7Y+IsYqHt4IbE1BOx2KXBXSs51KX8UIzLRLlEdaWiFrw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=kaechele.ca; spf=pass smtp.mailfrom=kaechele.ca; dkim=pass (1024-bit key) header.d=kaechele.ca header.i=@kaechele.ca header.b=RxESvjpC; arc=none smtp.client-ip=54.39.219.105 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=kaechele.ca Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kaechele.ca Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=kaechele.ca header.i=@kaechele.ca header.b="RxESvjpC" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id CB4B7C0070; Sat, 11 May 2024 08:13:19 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kaechele.ca; s=201907; t=1715429600; h=from:subject:date:message-id:to:mime-version: content-transfer-encoding:in-reply-to:references; bh=7fEj6CgCGDEcdIZ3R34TJAITpmljh9PBpxkkBatTvSM=; b=RxESvjpC4vOadqPEBJ8RJQLERDOvb1uvKDQ45v+woAbccB2H5QviVenwHd2j9jj8D8/Mgi LoJl6+LXP9XpUiNYZd3nuYK09sLf51B7hIv0KojG2ZuBSNSI7VsdUnPhsmiloMCWFPFV/j +82bfkc+u7E8NmJ8pMz0/Q2JL8w2b/E= From: Felix Kaechele To: Job Noorman , Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/5] input: himax_hx83112b: add himax_chip struct for multi-chip support Date: Sat, 11 May 2024 08:12:25 -0400 Message-ID: <20240511121245.109644-5-felix@kaechele.ca> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240511121245.109644-1-felix@kaechele.ca> References: <20240511121245.109644-1-felix@kaechele.ca> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 In preparation for HX83100A support allow defining separate functions for specific chip operations. Signed-off-by: Felix Kaechele --- drivers/input/touchscreen/himax_hx83112b.c | 51 +++++++++++++++------- 1 file changed, 35 insertions(+), 16 deletions(-) diff --git a/drivers/input/touchscreen/himax_hx83112b.c b/drivers/input/touchscreen/himax_hx83112b.c index 67ef3255cc8b..5092a357c332 100644 --- a/drivers/input/touchscreen/himax_hx83112b.c +++ b/drivers/input/touchscreen/himax_hx83112b.c @@ -20,8 +20,6 @@ #include #include -#define HIMAX_ID_83112B 0x83112b - #define HIMAX_MAX_POINTS 10 #define HIMAX_AHB_ADDR_BYTE_0 0x00 @@ -55,7 +53,16 @@ struct himax_event { static_assert(sizeof(struct himax_event) == 56); +struct himax_ts_data; +struct himax_chip { + u32 id; + int (*check_id)(struct himax_ts_data *ts); + int (*read_events)(struct himax_ts_data *ts, struct himax_event *event, + size_t length); +}; + struct himax_ts_data { + const struct himax_chip *chip; struct gpio_desc *gpiod_rst; struct input_dev *input_dev; struct i2c_client *client; @@ -167,15 +174,12 @@ static int himax_check_product_id(struct himax_ts_data *ts) dev_dbg(&ts->client->dev, "Product id: %x\n", product_id); - switch (product_id) { - case HIMAX_ID_83112B: + if (product_id == ts->chip->id) return 0; - default: - dev_err(&ts->client->dev, - "Unknown product id: %x\n", product_id); - return -EINVAL; - } + dev_err(&ts->client->dev, "Unknown product id: %x\n", + product_id); + return -EINVAL; } static int himax_input_register(struct himax_ts_data *ts) @@ -277,13 +281,19 @@ static bool himax_verify_checksum(struct himax_ts_data *ts, return true; } +static int himax_read_events(struct himax_ts_data *ts, + struct himax_event *event, size_t length) +{ + return regmap_raw_read(ts->regmap, HIMAX_AHB_ADDR_EVENT_STACK, event, + length); +} + static int himax_handle_input(struct himax_ts_data *ts) { int error; struct himax_event event; - error = regmap_raw_read(ts->regmap, HIMAX_AHB_ADDR_EVENT_STACK, &event, - sizeof(event)); + error = ts->chip->read_events(ts, &event, sizeof(event)); if (error) { dev_err(&ts->client->dev, "Failed to read input event: %d\n", error); @@ -329,6 +339,7 @@ static int himax_probe(struct i2c_client *client) i2c_set_clientdata(client, ts); ts->client = client; + ts->chip = i2c_get_match_data(client); ts->regmap = devm_regmap_init_i2c(client, &himax_regmap_config); error = PTR_ERR_OR_ZERO(ts->regmap); @@ -346,9 +357,11 @@ static int himax_probe(struct i2c_client *client) himax_reset(ts); - error = himax_check_product_id(ts); - if (error) - return error; + if (ts->chip->check_id) { + error = himax_check_product_id(ts); + if (error) + return error; + } error = himax_input_register(ts); if (error) @@ -381,15 +394,21 @@ static int himax_resume(struct device *dev) static DEFINE_SIMPLE_DEV_PM_OPS(himax_pm_ops, himax_suspend, himax_resume); +static const struct himax_chip hx83112b_chip = { + .id = 0x83112b, + .check_id = himax_check_product_id, + .read_events = himax_read_events, +}; + static const struct i2c_device_id himax_ts_id[] = { - { "hx83112b", 0 }, + { "hx83112b", (kernel_ulong_t)&hx83112b_chip }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, himax_ts_id); #ifdef CONFIG_OF static const struct of_device_id himax_of_match[] = { - { .compatible = "himax,hx83112b" }, + { .compatible = "himax,hx83112b", .data = &hx83112b_chip }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, himax_of_match);