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(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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGk9IHlZKGkwaShoZQ0xOTB5WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSUhCSE NVSktLVUpCS0tZBg++ X-HM-Tid: 0a917d5687fb09cfkunmd96197e03f1 X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6OVE6HTo*FDI2Hiw0NzYhTgII EjkaCzBVSlVKTElPSENPTEtCS0NKVTMWGhIXVQIeVQETGhUcOwkUGBBWGBMSCwhVGBQWRVlXWRIL WUFZTkNVSUlVTFVKSk9ZV1kIAVlBTU9JSzcG Content-Type: text/plain; charset="utf-8" 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 */ =20 static const struct rockchip_gpio_regs gpio_regs_v1 =3D { .port_dr =3D 0x00, @@ -78,7 +79,7 @@ static inline void rockchip_gpio_writel(struct rockchip_p= in_bank *bank, { void __iomem *reg =3D bank->reg_base + offset; =20 - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) + if (bank->gpio_type >=3D 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 =3D bank->reg_base + offset; u32 value; =20 - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) + if (bank->gpio_type >=3D GPIO_TYPE_V2) value =3D gpio_readl_v2(reg); else value =3D readl(reg); @@ -105,7 +106,7 @@ static inline void rockchip_gpio_writel_bit(struct rock= chip_pin_bank *bank, void __iomem *reg =3D bank->reg_base + offset; u32 data; =20 - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) { + if (bank->gpio_type >=3D GPIO_TYPE_V2) { if (value) data =3D BIT(bit % 16) | BIT(bit % 16 + 16); else @@ -126,7 +127,7 @@ static inline u32 rockchip_gpio_readl_bit(struct rockch= ip_pin_bank *bank, void __iomem *reg =3D bank->reg_base + offset; u32 data; =20 - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) { + if (bank->gpio_type >=3D GPIO_TYPE_V2) { data =3D readl(bit >=3D 16 ? reg + 0x4 : reg); data >>=3D bit % 16; } else { @@ -204,18 +205,24 @@ static int rockchip_gpio_set_debounce(struct gpio_chi= p *gc, unsigned int cur_div_reg; u64 div; =20 - div_debounce_support =3D (bank->gpio_type =3D=3D GPIO_TYPE_V2) && !IS_ERR= (bank->db_clk); + div_debounce_support =3D (bank->gpio_type >=3D GPIO_TYPE_V2) && !IS_ERR(b= ank->db_clk); if (debounce && div_debounce_support) { freq =3D clk_get_rate(bank->db_clk); if (!freq) return -EINVAL; div =3D (u64)(GENMASK(23, 0) + 1) * 1000000; - max_debounce =3D DIV_ROUND_CLOSEST_ULL(div, freq); + if (bank->gpio_type =3D=3D GPIO_TYPE_V2) + max_debounce =3D DIV_ROUND_CLOSEST_ULL(div, freq); + else + max_debounce =3D DIV_ROUND_CLOSEST_ULL(div, 2 * freq); if (debounce > max_debounce) return -EINVAL; =20 div =3D (u64)debounce * freq; - div_reg =3D DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC) - 1; + if (bank->gpio_type =3D=3D GPIO_TYPE_V2) + div_reg =3D DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC) - 1; + else + div_reg =3D DIV_ROUND_CLOSEST_ULL(div, USEC_PER_SEC / 2) - 1; } =20 raw_spin_lock_irqsave(&bank->slock, flags); @@ -401,7 +408,7 @@ static int rockchip_irq_set_type(struct irq_data *d, un= signed int type) polarity =3D rockchip_gpio_readl(bank, bank->gpio_regs->int_polarity); =20 if (type =3D=3D IRQ_TYPE_EDGE_BOTH) { - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) { + if (bank->gpio_type >=3D 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, un= signed int type) polarity |=3D mask; } } else { - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) { + if (bank->gpio_type >=3D 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) } =20 gc =3D irq_get_domain_generic_chip(bank->domain, 0); - if (bank->gpio_type =3D=3D GPIO_TYPE_V2) { + if (bank->gpio_type >=3D GPIO_TYPE_V2) { gc->reg_writel =3D gpio_writel_v2; gc->reg_readl =3D gpio_readl_v2; } @@ -648,13 +655,20 @@ static int rockchip_get_bank_data(struct rockchip_pin= _bank *bank) =20 id =3D readl(bank->reg_base + gpio_regs_v2.version_id); =20 - /* If not gpio v2, that is default to v1. */ - if (id =3D=3D GPIO_TYPE_V2 || id =3D=3D GPIO_TYPE_V2_1) { + switch (id) { + case GPIO_TYPE_V2: + case GPIO_TYPE_V2_1: bank->gpio_regs =3D &gpio_regs_v2; bank->gpio_type =3D GPIO_TYPE_V2; - } else { + break; + case GPIO_TYPE_V2_2: + bank->gpio_regs =3D &gpio_regs_v2; + bank->gpio_type =3D GPIO_TYPE_V2_2; + break; + default: bank->gpio_regs =3D &gpio_regs_v1; bank->gpio_type =3D GPIO_TYPE_V1; + pr_info("Note: Use default GPIO_TYPE_V1!\n"); } =20 return 0; --=20 2.34.1