From patchwork Mon Sep 26 13:00:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Binbin Zhou X-Patchwork-Id: 609339 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4582EC07E9D for ; Mon, 26 Sep 2022 14:40:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234703AbiIZOkX (ORCPT ); Mon, 26 Sep 2022 10:40:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38862 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234017AbiIZOjo (ORCPT ); Mon, 26 Sep 2022 10:39:44 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E10038E453; Mon, 26 Sep 2022 06:01:15 -0700 (PDT) Received: from localhost.localdomain (unknown [112.20.108.220]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Bx5OGUojFjdz4iAA--.62163S2; Mon, 26 Sep 2022 21:01:09 +0800 (CST) From: Binbin Zhou To: Wolfram Sang , Wolfram Sang , Mika Westerberg , linux-i2c@vger.kernel.org Cc: loongarch@lists.linux.dev, linux-acpi@vger.kernel.org, WANG Xuerui , Jianmin Lv , Binbin Zhou Subject: [PATCH V2 0/4] i2c: ls2x: Add support for the Loongson-2K/LS7A I2C Date: Mon, 26 Sep 2022 21:00:03 +0800 Message-Id: X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Bx5OGUojFjdz4iAA--.62163S2 X-Coremail-Antispam: 1UD129KBjvdXoWrZF1kWF1xAr1rZFWkKr1UGFg_yoWkZFbEkF 9ayas7Gr1DJFyDAa4jvr4fZrW3KayUW3WrKFn7t34fCr12qr15KFyDZr93tFyxX3yUWFnx Xw4kuF1xZF1xtjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb2xFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE3s 1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0 cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8Jw ACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc2xSY4AK67AK6ry8MxAI w28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr 4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxG rwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8Jw CI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2 z280aVCY1x0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjfUnpnQUUUUU X-CM-SenderInfo: p2kr3uplqex0o6or00hjvr0hdfq/ Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Hi all: This patch series adds support for the I2C module found on various Loongson systems with the Loongson-2K SoC or the Loongson LS7A bridge chip. For now, the I2C driver is suitable for DT-based or ACPI-based systems. I have only tested the Loongson-3A5000+LS7A1000/LS7A2000 under LoongArch architecture. Thanks. Changes since V1: 1. Remove the function of getting the static i2c bus number from ACPI "_UID"; 2. Fix build warning from kernel test robot. Binbin Zhou (4): i2c: gpio: Add support on ACPI-based system dt-bindings: i2c: add bindings for Loongson LS2X I2C i2c: Add driver for Loongson-2K/LS7A I2C controller LoongArch: Enable LS2X I2C in loongson3_defconfig .../bindings/i2c/loongson,ls2x-i2c.yaml | 48 +++ arch/loongarch/configs/loongson3_defconfig | 1 + drivers/i2c/busses/Kconfig | 7 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-gpio.c | 30 ++ drivers/i2c/busses/i2c-ls2x.c | 365 ++++++++++++++++++ 6 files changed, 452 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/loongson,ls2x-i2c.yaml create mode 100644 drivers/i2c/busses/i2c-ls2x.c