From nobody Wed Dec 17 09:18:29 2025 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 D2234EE49A0 for ; Wed, 23 Aug 2023 03:34:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232461AbjHWDen (ORCPT ); Tue, 22 Aug 2023 23:34:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232155AbjHWDeh (ORCPT ); Tue, 22 Aug 2023 23:34:37 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2885EE4D; Tue, 22 Aug 2023 20:34:33 -0700 (PDT) Received: from loongson.cn (unknown [10.20.42.201]) by gateway (Coremail) with SMTP id _____8DxqOpIfuVkZhYbAA--.45669S3; Wed, 23 Aug 2023 11:34:32 +0800 (CST) Received: from localhost.localdomain (unknown [10.20.42.201]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxDCNEfuVk7_FgAA--.20841S4; Wed, 23 Aug 2023 11:34:32 +0800 (CST) From: Yinbo Zhu To: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jianmin Lv , wanghongliang@loongson.cn, loongson-kernel@lists.loongnix.cn, Yinbo Zhu Subject: [PATCH v4 2/2] gpio: loongson: add more gpio chip support Date: Wed, 23 Aug 2023 11:34:27 +0800 Message-Id: <20230823033427.23072-3-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20230823033427.23072-1-zhuyinbo@loongson.cn> References: <20230823033427.23072-1-zhuyinbo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: AQAAf8AxDCNEfuVk7_FgAA--.20841S4 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch was to add loongson 2k0500, 2k2000 and 3a5000 gpio chip driver support. Signed-off-by: Yinbo Zhu --- drivers/gpio/gpio-loongson-64bit.c | 136 +++++++++++++++++++++++++++-- 1 file changed, 128 insertions(+), 8 deletions(-) diff --git a/drivers/gpio/gpio-loongson-64bit.c b/drivers/gpio/gpio-loongso= n-64bit.c index 06213bbfabdd..8786d0a21bbb 100644 --- a/drivers/gpio/gpio-loongson-64bit.c +++ b/drivers/gpio/gpio-loongson-64bit.c @@ -23,9 +23,10 @@ enum loongson_gpio_mode { struct loongson_gpio_chip_data { const char *label; enum loongson_gpio_mode mode; - unsigned int conf_offset; - unsigned int out_offset; - unsigned int in_offset; + u32 conf_offset; + u32 out_offset; + u32 in_offset; + u32 inten_offset; }; =20 struct loongson_gpio_chip { @@ -117,7 +118,17 @@ static void loongson_gpio_set(struct gpio_chip *chip, = unsigned int pin, int valu =20 static int loongson_gpio_to_irq(struct gpio_chip *chip, unsigned int offse= t) { + unsigned int u; struct platform_device *pdev =3D to_platform_device(chip->parent); + struct loongson_gpio_chip *lgpio =3D to_loongson_gpio_chip(chip); + + if (lgpio->chip_data->mode =3D=3D BIT_CTRL_MODE) { + u =3D readl(lgpio->reg_base + lgpio->chip_data->inten_offset + offset / = 32 * 4); + u |=3D BIT(offset % 32); + writel(u, lgpio->reg_base + lgpio->chip_data->inten_offset + offset / 32= * 4); + } else { + writeb(1, lgpio->reg_base + lgpio->chip_data->inten_offset + offset); + } =20 return platform_get_irq(pdev, offset); } @@ -127,11 +138,30 @@ static int loongson_gpio_init(struct device *dev, str= uct loongson_gpio_chip *lgp { int ret; u32 ngpios; + unsigned int io_width; =20 lgpio->reg_base =3D reg_base; + if (device_property_read_u32(dev, "ngpios", &ngpios) || !ngpios) + return -EINVAL; + + ret =3D DIV_ROUND_UP(ngpios, 8); + switch (ret) { + case 1 ... 2: + io_width =3D ret; + break; + case 3 ... 4: + io_width =3D 0x4; + break; + case 5 ... 8: + io_width =3D 0x8; + break; + default: + dev_err(dev, "unsupported io width\n"); + return -EINVAL; + } =20 if (lgpio->chip_data->mode =3D=3D BIT_CTRL_MODE) { - ret =3D bgpio_init(&lgpio->chip, dev, 8, + ret =3D bgpio_init(&lgpio->chip, dev, io_width, lgpio->reg_base + lgpio->chip_data->in_offset, lgpio->reg_base + lgpio->chip_data->out_offset, NULL, NULL, @@ -151,12 +181,11 @@ static int loongson_gpio_init(struct device *dev, str= uct loongson_gpio_chip *lgp spin_lock_init(&lgpio->lock); } =20 - device_property_read_u32(dev, "ngpios", &ngpios); - - lgpio->chip.can_sleep =3D 0; lgpio->chip.ngpio =3D ngpios; lgpio->chip.label =3D lgpio->chip_data->label; - lgpio->chip.to_irq =3D loongson_gpio_to_irq; + lgpio->chip.can_sleep =3D 0; + if (lgpio->chip_data->inten_offset) + lgpio->chip.to_irq =3D loongson_gpio_to_irq; =20 return devm_gpiochip_add_data(dev, &lgpio->chip, lgpio); } @@ -187,6 +216,57 @@ static const struct loongson_gpio_chip_data loongson_g= pio_ls2k_data =3D { .conf_offset =3D 0x0, .in_offset =3D 0x20, .out_offset =3D 0x10, + .inten_offset =3D 0x30, +}; + +static const struct loongson_gpio_chip_data loongson_gpio_ls2k0500_data0 = =3D { + .label =3D "ls2k0500_gpio", + .mode =3D BIT_CTRL_MODE, + .conf_offset =3D 0x0, + .in_offset =3D 0x8, + .out_offset =3D 0x10, + .inten_offset =3D 0xb0, +}; + +static const struct loongson_gpio_chip_data loongson_gpio_ls2k0500_data1 = =3D { + .label =3D "ls2k0500_gpio", + .mode =3D BIT_CTRL_MODE, + .conf_offset =3D 0x0, + .in_offset =3D 0x8, + .out_offset =3D 0x10, + .inten_offset =3D 0x98, +}; + +static const struct loongson_gpio_chip_data loongson_gpio_ls2k2000_data0 = =3D { + .label =3D "ls2k2000_gpio", + .mode =3D BIT_CTRL_MODE, + .conf_offset =3D 0x0, + .in_offset =3D 0xc, + .out_offset =3D 0x8, +}; + +static const struct loongson_gpio_chip_data loongson_gpio_ls2k2000_data1 = =3D { + .label =3D "ls2k2000_gpio", + .mode =3D BIT_CTRL_MODE, + .conf_offset =3D 0x0, + .in_offset =3D 0x20, + .out_offset =3D 0x10, +}; + +static const struct loongson_gpio_chip_data loongson_gpio_ls2k2000_data2 = =3D { + .label =3D "ls2k2000_gpio", + .mode =3D BIT_CTRL_MODE, + .conf_offset =3D 0x84, + .in_offset =3D 0x88, + .out_offset =3D 0x80, +}; + +static const struct loongson_gpio_chip_data loongson_gpio_ls3a5000_data = =3D { + .label =3D "ls3a5000_gpio", + .mode =3D BIT_CTRL_MODE, + .conf_offset =3D 0x0, + .in_offset =3D 0xc, + .out_offset =3D 0x8, }; =20 static const struct loongson_gpio_chip_data loongson_gpio_ls7a_data =3D { @@ -202,6 +282,30 @@ static const struct of_device_id loongson_gpio_of_matc= h[] =3D { .compatible =3D "loongson,ls2k-gpio", .data =3D &loongson_gpio_ls2k_data, }, + { + .compatible =3D "loongson,ls2k0500-gpio0", + .data =3D &loongson_gpio_ls2k0500_data0, + }, + { + .compatible =3D "loongson,ls2k0500-gpio1", + .data =3D &loongson_gpio_ls2k0500_data1, + }, + { + .compatible =3D "loongson,ls2k2000-gpio0", + .data =3D &loongson_gpio_ls2k2000_data0, + }, + { + .compatible =3D "loongson,ls2k2000-gpio1", + .data =3D &loongson_gpio_ls2k2000_data1, + }, + { + .compatible =3D "loongson,ls2k2000-gpio2", + .data =3D &loongson_gpio_ls2k2000_data2, + }, + { + .compatible =3D "loongson,ls3a5000-gpio", + .data =3D &loongson_gpio_ls3a5000_data, + }, { .compatible =3D "loongson,ls7a-gpio", .data =3D &loongson_gpio_ls7a_data, @@ -215,6 +319,22 @@ static const struct acpi_device_id loongson_gpio_acpi_= match[] =3D { .id =3D "LOON0002", .driver_data =3D (kernel_ulong_t)&loongson_gpio_ls7a_data, }, + { + .id =3D "LOON0007", + .driver_data =3D (kernel_ulong_t)&loongson_gpio_ls3a5000_data, + }, + { + .id =3D "LOON000A", + .driver_data =3D (kernel_ulong_t)&loongson_gpio_ls2k2000_data0, + }, + { + .id =3D "LOON000B", + .driver_data =3D (kernel_ulong_t)&loongson_gpio_ls2k2000_data1, + }, + { + .id =3D "LOON000C", + .driver_data =3D (kernel_ulong_t)&loongson_gpio_ls2k2000_data2, + }, {} }; MODULE_DEVICE_TABLE(acpi, loongson_gpio_acpi_match); --=20 2.20.1