From patchwork Tue Jan 7 13:08:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 1218778 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="MnThldae"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47sXlC1BTKz9sRG for ; Wed, 8 Jan 2020 00:09:11 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728066AbgAGNJJ (ORCPT ); Tue, 7 Jan 2020 08:09:09 -0500 Received: from mail-wr1-f66.google.com ([209.85.221.66]:39406 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728063AbgAGNJJ (ORCPT ); Tue, 7 Jan 2020 08:09:09 -0500 Received: by mail-wr1-f66.google.com with SMTP id y11so53845595wrt.6 for ; Tue, 07 Jan 2020 05:09:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dOra14YEaV44ubgsAivBtLe/fYp3aKaI+qe+0zSOjBs=; b=MnThldae9U3xf3TZ17WyVKTsfvHvUD1X9MrU103N5h4ZCwjOWPYkLbRJn+0EDnP+ms VYnycdcR6xYUl0mC7OlGIfKsKjy4xStQFWXPB7werEMXXYmnfG4mcXy1yKlyVpIsWf5k /W5HZUf5kG7ntSFG0Ll/fzfR0xuaO0XeH2Z65lU2aFrsGKE/+wLvKeopcUHe6P31k5c/ f+8JkfVO7ZMBgcusD9LsWR9v1nf+G/C26anTmwiA0c5rb90lLCFxddSuXfabTGQZFvM4 zUzN6ecDC3Sb+HfUShZ7BtViSZYyZlinUcd1bOZ5AWJ078CJMR4QzM5UUMFDtVbWK2zc R0ig== 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=dOra14YEaV44ubgsAivBtLe/fYp3aKaI+qe+0zSOjBs=; b=sunLjXT4K+tpgdn0Za+jKklKmrjLuKLQ3UXVAF/l3tePr3cXvg4RSvZ8wLO/1D2wI/ Zz3QA62dEdBj+Sm3KYdtQcBogFrBM6RVsTzVyxOn+7cx1hPUitd4sESpvKCKv4oEMyHE oXpTROxcLiUxALOp5vuSyxdyMNHFp8HbNlT5M7CU739HTF8hH109kdzEUasnsFFiod5T jXlW+xsdJ8rqb+n84NtSWhzbGjGwTwAI1DkLG37jxSTQWUevHRR+cVnGX0EZ+hzwEMoW oFBPlQB/c3i6kHF72/gn7NPrmHFOCGKv3eYNCJwkZGPDEDd1bbbjbLrlbIbUugbLlJxh m6ag== X-Gm-Message-State: APjAAAXzWbPQfBf17vsMajuJ1Pgoyf4fxFoN+TmbVoEHiZkTlaTtOa6p 8S749ySGLbZ1btb0C/G3haGCKg== X-Google-Smtp-Source: APXvYqye/FAl2SX+wrbdjY7rkyMFaw93aVHnPxSc0cXTSBLx0RdB6XX5780feE18eQs88L9p63bj/w== X-Received: by 2002:a5d:620b:: with SMTP id y11mr106337473wru.230.1578402546985; Tue, 07 Jan 2020 05:09:06 -0800 (PST) Received: from srini-hackbox.lan (cpc89974-aztw32-2-0-cust43.18-1.cable.virginm.net. [86.30.250.44]) by smtp.gmail.com with ESMTPSA id b18sm7287035wru.50.2020.01.07.05.09.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jan 2020 05:09:06 -0800 (PST) From: Srinivas Kandagatla To: linus.walleij@linaro.org, linux-gpio@vger.kernel.org Cc: robh@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, spapothi@codeaurora.org, bgoswami@codeaurora.org, Srinivas Kandagatla Subject: [PATCH v7 2/2] gpio: wcd934x: Add support to wcd934x gpio controller Date: Tue, 7 Jan 2020 13:08:44 +0000 Message-Id: <20200107130844.20763-3-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200107130844.20763-1-srinivas.kandagatla@linaro.org> References: <20200107130844.20763-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This patch adds support to wcd934x gpio block found in WCD9340/WC9341 Audio codecs. Signed-off-by: Srinivas Kandagatla --- drivers/gpio/Kconfig | 7 +++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-wcd934x.c | 121 ++++++++++++++++++++++++++++++++++++ 3 files changed, 129 insertions(+) create mode 100644 drivers/gpio/gpio-wcd934x.c diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 8adffd42f8cb..693027191c19 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -613,6 +613,13 @@ config GPIO_VX855 additional drivers must be enabled in order to use the functionality of the device. +config GPIO_WCD934X + tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver" + depends on MFD_WCD934X && OF_GPIO + help + This driver is to supprot GPIO block found on the Qualcomm Technologies + Inc WCD9340/WCD9341 Audio Codec. + config GPIO_XGENE bool "APM X-Gene GPIO controller support" depends on ARM64 && OF_GPIO diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 34eb8b2b12dd..116133f905e7 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -157,6 +157,7 @@ obj-$(CONFIG_GPIO_VF610) += gpio-vf610.o obj-$(CONFIG_GPIO_VIPERBOARD) += gpio-viperboard.o obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o obj-$(CONFIG_GPIO_VX855) += gpio-vx855.o +obj-$(CONFIG_GPIO_WCD934X) += gpio-wcd934x.o obj-$(CONFIG_GPIO_WHISKEY_COVE) += gpio-wcove.o obj-$(CONFIG_GPIO_WINBOND) += gpio-winbond.o obj-$(CONFIG_GPIO_WM831X) += gpio-wm831x.o diff --git a/drivers/gpio/gpio-wcd934x.c b/drivers/gpio/gpio-wcd934x.c new file mode 100644 index 000000000000..74913f2e5697 --- /dev/null +++ b/drivers/gpio/gpio-wcd934x.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2019, Linaro Limited + +#include +#include +#include +#include +#include + +#define WCD_PIN_MASK(p) BIT(p - 1) +#define WCD_REG_DIR_CTL_OFFSET 0x42 +#define WCD_REG_VAL_CTL_OFFSET 0x43 +#define WCD934X_NPINS 5 + +struct wcd_gpio_data { + struct regmap *map; + struct gpio_chip chip; +}; + +static int wcd_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) +{ + struct wcd_gpio_data *data = gpiochip_get_data(chip); + unsigned int value; + int ret; + + ret = regmap_read(data->map, WCD_REG_DIR_CTL_OFFSET, &value); + if (ret < 0) + return ret; + + if (value & WCD_PIN_MASK(pin)) + return GPIO_LINE_DIRECTION_OUT; + + return GPIO_LINE_DIRECTION_IN; +} + +static int wcd_gpio_direction_input(struct gpio_chip *chip, unsigned int pin) +{ + struct wcd_gpio_data *data = gpiochip_get_data(chip); + + return regmap_update_bits(data->map, WCD_REG_DIR_CTL_OFFSET, + WCD_PIN_MASK(pin), 0); +} + +static int wcd_gpio_direction_output(struct gpio_chip *chip, unsigned int pin, + int val) +{ + struct wcd_gpio_data *data = gpiochip_get_data(chip); + + regmap_update_bits(data->map, WCD_REG_DIR_CTL_OFFSET, + WCD_PIN_MASK(pin), WCD_PIN_MASK(pin)); + + return regmap_update_bits(data->map, WCD_REG_VAL_CTL_OFFSET, + WCD_PIN_MASK(pin), + val ? WCD_PIN_MASK(pin) : 0); +} + +static int wcd_gpio_get(struct gpio_chip *chip, unsigned int pin) +{ + struct wcd_gpio_data *data = gpiochip_get_data(chip); + int value; + + regmap_read(data->map, WCD_REG_VAL_CTL_OFFSET, &value); + + return !!(value && WCD_PIN_MASK(pin)); +} + +static void wcd_gpio_set(struct gpio_chip *chip, unsigned int pin, int val) +{ + wcd_gpio_direction_output(chip, pin, val); +} + +static int wcd_gpio_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct wcd_gpio_data *data; + struct gpio_chip *chip; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->map = dev_get_regmap(dev->parent, NULL); + if (!data->map) { + dev_err(dev, "%s: failed to get regmap\n", __func__); + return -EINVAL; + } + + chip = &data->chip; + chip->direction_input = wcd_gpio_direction_input; + chip->direction_output = wcd_gpio_direction_output; + chip->get_direction = wcd_gpio_get_direction; + chip->get = wcd_gpio_get; + chip->set = wcd_gpio_set; + chip->parent = dev; + chip->base = -1; + chip->ngpio = WCD934X_NPINS; + chip->label = dev_name(dev); + chip->of_gpio_n_cells = 2; + chip->can_sleep = false; + + return devm_gpiochip_add_data(dev, chip, data); +} + +static const struct of_device_id wcd_gpio_of_match[] = { + { .compatible = "qcom,wcd9340-gpio" }, + { .compatible = "qcom,wcd9341-gpio" }, + { } +}; +MODULE_DEVICE_TABLE(of, wcd_gpio_of_match); + +static struct platform_driver wcd_gpio_driver = { + .driver = { + .name = "wcd934x-gpio", + .of_match_table = wcd_gpio_of_match, + }, + .probe = wcd_gpio_probe, +}; + +module_platform_driver(wcd_gpio_driver); +MODULE_DESCRIPTION("Qualcomm Technologies, Inc WCD GPIO control driver"); +MODULE_LICENSE("GPL v2");