From patchwork Fri Aug 23 03:43:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ye Zhang X-Patchwork-Id: 13774559 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A2D9C52D7C for ; Fri, 23 Aug 2024 03:50:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=il01U3QhL7WxthtsYBtxC3WfpqtQ7KK3dO0733RyccI=; b=hR13UZZAQWmFv2 Ikd54FFhHeMuYwzbDN75N6xxJHC14FnCNfQbHZN74J6v8yBGOpsh4YOSYc3w+v7sJXkm5a/MlMukA uw1DRHClTG0mqKjDG2AVrXqUqq02oeRU89EhLg+BpH8Z6Pu7pVb9dJbbL5qsaRxzzopqzAAmWRNjN hGRqF5gddxMN09OdsRIxLsbVNYdY21tnWBBvso+QZ6iiXADyAJovCH1i6VjGQJRJwfXmHZnK2x89e B4QeY/+doKNOs6djakxsLO7yjIshAPAgaj4QTWmS/6RjLo6NFvbrSTEVIKjUmAua8ld9p9sTbpnls dQTW8XQnrmxC6o0fjrnA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1shLJY-0000000F6NK-241T; Fri, 23 Aug 2024 03:50:16 +0000 Received: from mail-m11886.qiye.163.com ([115.236.118.86]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1shLEp-0000000F50y-1np6; Fri, 23 Aug 2024 03:45:27 +0000 DKIM-Signature: a=rsa-sha256; b=U9MZIydUDcjO9xdJvBvlkI0qjkZordIUe5F8OiKfCHXK4rX6EDX6BnpGbE63FBVy9KckeE51U7OEyDt+7u5WiKeX06NJNeZDUxxkMritcWcUP/KqPoHUpDqv86Dl7mqHemop6eY39GJud+qeSFOBWGMhO0hTt5po8eki6cu7NJE=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=kmbOu81I/SivoswEU4k4vCo9LnH975Xko2P8NPDJNNA=; h=date:mime-version:subject:message-id:from; Received: from rockchip.. (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTPA id D96197E03F1; Fri, 23 Aug 2024 11:45:07 +0800 (CST) From: Ye Zhang To: linus.walleij@linaro.org, brgl@bgdev.pl, heiko@sntech.de, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, tao.huang@rock-chips.com, finley.xiao@rock-chips.com, tim.chen@rock-chips.com, elaine.zhang@rock-chips.com, Ye Zhang Subject: [PATCH v2] gpio: rockchip: support new version gpio Date: Fri, 23 Aug 2024 11:43:11 +0800 Message-Id: <20240823034314.62305-9-ye.zhang@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240823034314.62305-1-ye.zhang@rock-chips.com> References: <20240823034314.62305-1-ye.zhang@rock-chips.com> MIME-Version: 1.0 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGk9IHlZKGkwaShoZQ0xOTB5WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSUhCSE NVSktLVUpCS0tZBg++ X-HM-Tid: 0a917d5687fb09cfkunmd96197e03f1 X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6OVE6HTo*FDI2Hiw0NzYhTgII EjkaCzBVSlVKTElPSENPTEtCS0NKVTMWGhIXVQIeVQETGhUcOwkUGBBWGBMSCwhVGBQWRVlXWRIL WUFZTkNVSUlVTFVKSk9ZV1kIAVlBTU9JSzcG X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240822_204523_823176_0E69DB53 X-CRM114-Status: GOOD ( 14.53 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The next version gpio controller on SoCs like rk3576 which support four OS operation and four interrupts Signed-off-by: Ye Zhang --- drivers/gpio/gpio-rockchip.c | 40 ++++++++++++++++++++++++------------ 1 file changed, 27 insertions(+), 13 deletions(-) diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index 25ddf6a82c09..5289c94d5c60 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -29,6 +29,7 @@ #define GPIO_TYPE_V1 (0) /* GPIO Version ID reserved */ #define GPIO_TYPE_V2 (0x01000C2B) /* GPIO Version ID 0x01000C2B */ #define GPIO_TYPE_V2_1 (0x0101157C) /* GPIO Version ID 0x0101157C */ +#define GPIO_TYPE_V2_2 (0x010219C8) /* GPIO Version ID 0x010219C8 */ static const struct rockchip_gpio_regs gpio_regs_v1 = { .port_dr = 0x00, @@ -78,7 +79,7 @@ static inline void rockchip_gpio_writel(struct rockchip_pin_bank *bank, { void __iomem *reg = bank->reg_base + offset; - if (bank->gpio_type == GPIO_TYPE_V2) + if (bank->gpio_type >= GPIO_TYPE_V2) gpio_writel_v2(value, reg); else writel(value, reg); @@ -90,7 +91,7 @@ static inline u32 rockchip_gpio_readl(struct rockchip_pin_bank *bank, void __iomem *reg = bank->reg_base + offset; u32 value; - if (bank->gpio_type == GPIO_TYPE_V2) + if (bank->gpio_type >= GPIO_TYPE_V2) value = gpio_readl_v2(reg); else value = readl(reg); @@ -105,7 +106,7 @@ static inline void rockchip_gpio_writel_bit(struct rockchip_pin_bank *bank, void __iomem *reg = bank->reg_base + offset; u32 data; - if (bank->gpio_type == GPIO_TYPE_V2) { + if (bank->gpio_type >= GPIO_TYPE_V2) { if (value) data = BIT(bit % 16) | BIT(bit % 16 + 16); else @@ -126,7 +127,7 @@ static inline u32 rockchip_gpio_readl_bit(struct rockchip_pin_bank *bank, void __iomem *reg = bank->reg_base + offset; u32 data; - if (bank->gpio_type == GPIO_TYPE_V2) { + if (bank->gpio_type >= GPIO_TYPE_V2) { data = readl(bit >= 16 ? reg + 0x4 : reg); data >>= bit % 16; } else { @@ -204,18 +205,24 @@ static int rockchip_gpio_set_debounce(struct gpio_chip *gc, unsigned int cur_div_reg; u64 div; - div_debounce_support = (bank->gpio_type == GPIO_TYPE_V2) && !IS_ERR(bank->db_clk); + div_debounce_support = (bank->gpio_type >= GPIO_TYPE_V2) && !IS_ERR(bank->db_clk); if (debounce && div_debounce_support) { freq = clk_get_rate(bank->db_clk); if (!freq) return -EINVAL; div = (u64)(GENMASK(23, 0) + 1) * 1000000; - max_debounce = DIV_ROUND_CLOSEST_ULL(div, freq); + if (bank->gpio_type == GPIO_TYPE_V2) + max_debounce = DIV_ROUND_CLOSEST_ULL(div, freq); + else + max_debounce = DIV_ROUND_CLOSEST_ULL(div, 2 * freq); if (debounce > max_debounce) return -EINVAL; div = (u64)debounce * freq; - div_reg = DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC) - 1; + if (bank->gpio_type == GPIO_TYPE_V2) + div_reg = DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC) - 1; + else + div_reg = DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC / 2) - 1; } raw_spin_lock_irqsave(&bank->slock, flags); @@ -401,7 +408,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) polarity = rockchip_gpio_readl(bank, bank->gpio_regs->int_polarity); if (type == IRQ_TYPE_EDGE_BOTH) { - if (bank->gpio_type == GPIO_TYPE_V2) { + if (bank->gpio_type >= GPIO_TYPE_V2) { rockchip_gpio_writel_bit(bank, d->hwirq, 1, bank->gpio_regs->int_bothedge); goto out; @@ -420,7 +427,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) polarity |= mask; } } else { - if (bank->gpio_type == GPIO_TYPE_V2) { + if (bank->gpio_type >= GPIO_TYPE_V2) { rockchip_gpio_writel_bit(bank, d->hwirq, 0, bank->gpio_regs->int_bothedge); } else { @@ -526,7 +533,7 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) } gc = irq_get_domain_generic_chip(bank->domain, 0); - if (bank->gpio_type == GPIO_TYPE_V2) { + if (bank->gpio_type >= GPIO_TYPE_V2) { gc->reg_writel = gpio_writel_v2; gc->reg_readl = gpio_readl_v2; } @@ -648,13 +655,20 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) id = readl(bank->reg_base + gpio_regs_v2.version_id); - /* If not gpio v2, that is default to v1. */ - if (id == GPIO_TYPE_V2 || id == GPIO_TYPE_V2_1) { + switch (id) { + case GPIO_TYPE_V2: + case GPIO_TYPE_V2_1: bank->gpio_regs = &gpio_regs_v2; bank->gpio_type = GPIO_TYPE_V2; - } else { + break; + case GPIO_TYPE_V2_2: + bank->gpio_regs = &gpio_regs_v2; + bank->gpio_type = GPIO_TYPE_V2_2; + break; + default: bank->gpio_regs = &gpio_regs_v1; bank->gpio_type = GPIO_TYPE_V1; + pr_info("Note: Use default GPIO_TYPE_V1!\n"); } return 0;