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[10.229.9.55]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20231208075020epsmtip22a4623a357ef33f51f7d7eb3779fa277~ey9PegR_w1657616576epsmtip2D; Fri, 8 Dec 2023 07:50:20 +0000 (GMT) From: Jaewon Kim To: Krzysztof Kozlowski , Alim Akhtar , Rob Herring , Conor Dooley , Tomasz Figa , Sylwester Nawrocki , Linus Walleij , Thierry Reding , Uwe Kleine-K?nig , Greg Kroah-Hartman , Jiri Slaby Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-pwm@vger.kernel.org, linux-serial@vger.kernel.org, Jaewon Kim Subject: [PATCH v3 3/4] pinctrl: samsung: support ExynosAuto GPIO structure Date: Fri, 8 Dec 2023 16:45:26 +0900 Message-ID: <20231208074527.50840-4-jaewon02.kim@samsung.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231208074527.50840-1-jaewon02.kim@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: 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X-CRM114-Status: GOOD ( 25.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org New ExynosAuto series GPIO have a different register structure. In the existing Exynos series, EINT control register enumerated after a specific offset (e.g EXYNOS_GPIO_ECON_OFFSET, EXYNOS_GPIO_EMASK_OFFSET). However, from ExynosAutov920 SoC, the register that controls EINT belongs to each GPIO bank, and each GPIO bank has 0x1000 align. This is a structure to protect the GPIO bank using S2MPU in VM environment, and will only be applied in ExynosAuto series SoCs. ------------------------------------------------- | original | ExynosAutov920 | |-----------------------------------------------| | 0x0 GPIO_CON | 0x0 GPIO_CON | | 0x4 GPIO_DAT | 0x4 GPIO_DAT | | 0x8 GPIO_PUD | 0x8 GPIO_PUD | | 0xc GPIO_DRV | 0xc GPIO_DRV | | 0x10 GPIO_CONPDN | 0x10 GPIO_CONPDN | | 0x14 GPIO_PUDPDN | 0x14 GPIO_PUDPDN | | 0x700 EINT_CON | 0x18 EINT_CON | | 0x800 EINT_FLTCON | 0x1c EINT_FLTCON0 | | 0x900 EINT_MASK | 0x20 EINT_FLTCON1 | | 0xa00 EINT_PEND | 0x24 EINT_MASK | | | 0x28 EINT_PEND | ------------------------------------------------- Signed-off-by: Jaewon Kim --- drivers/pinctrl/samsung/pinctrl-exynos.c | 81 +++++++++++++++++++++-- drivers/pinctrl/samsung/pinctrl-exynos.h | 1 + drivers/pinctrl/samsung/pinctrl-samsung.c | 3 + drivers/pinctrl/samsung/pinctrl-samsung.h | 12 ++++ 4 files changed, 90 insertions(+), 7 deletions(-) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 6b58ec84e34b..f798f64b1122 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -56,6 +56,9 @@ static void exynos_irq_mask(struct irq_data *irqd) unsigned int mask; unsigned long flags; + if (bank->eint_mask_offset) + reg_mask = bank->pctl_offset + bank->eint_mask_offset; + raw_spin_lock_irqsave(&bank->slock, flags); mask = readl(bank->eint_base + reg_mask); @@ -72,6 +75,9 @@ static void exynos_irq_ack(struct irq_data *irqd) struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd); unsigned long reg_pend = our_chip->eint_pend + bank->eint_offset; + if (bank->eint_pend_offset) + reg_pend = bank->pctl_offset + bank->eint_pend_offset; + writel(1 << irqd->hwirq, bank->eint_base + reg_pend); } @@ -95,6 +101,9 @@ static void exynos_irq_unmask(struct irq_data *irqd) if (irqd_get_trigger_type(irqd) & IRQ_TYPE_LEVEL_MASK) exynos_irq_ack(irqd); + if (bank->eint_mask_offset) + reg_mask = bank->pctl_offset + bank->eint_mask_offset; + raw_spin_lock_irqsave(&bank->slock, flags); mask = readl(bank->eint_base + reg_mask); @@ -139,6 +148,9 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) else irq_set_handler_locked(irqd, handle_level_irq); + if (bank->eint_con_offset) + reg_con = bank->pctl_offset + bank->eint_con_offset; + con = readl(bank->eint_base + reg_con); con &= ~(EXYNOS_EINT_CON_MASK << shift); con |= trig_type << shift; @@ -221,6 +233,18 @@ static const struct exynos_irq_chip exynos_gpio_irq_chip __initconst = { /* eint_wake_mask_value not used */ }; +static const struct exynos_irq_chip exynosauto_gpio_irq_chip __initconst = { + .chip = { + .name = "exynosauto_gpio_irq_chip", + .irq_unmask = exynos_irq_unmask, + .irq_mask = exynos_irq_mask, + .irq_ack = exynos_irq_ack, + .irq_set_type = exynos_irq_set_type, + .irq_request_resources = exynos_irq_request_resources, + .irq_release_resources = exynos_irq_release_resources, + }, +}; + static int exynos_eint_irq_map(struct irq_domain *h, unsigned int virq, irq_hw_number_t hw) { @@ -247,7 +271,10 @@ static irqreturn_t exynos_eint_gpio_irq(int irq, void *data) unsigned int svc, group, pin; int ret; - svc = readl(bank->eint_base + EXYNOS_SVC_OFFSET); + if (bank->eint_con_offset) + svc = readl(bank->eint_base + EXYNOSAUTO_SVC_OFFSET); + else + svc = readl(bank->eint_base + EXYNOS_SVC_OFFSET); group = EXYNOS_SVC_GROUP(svc); pin = svc & EXYNOS_SVC_NUM_MASK; @@ -297,8 +324,12 @@ __init int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d) if (bank->eint_type != EINT_TYPE_GPIO) continue; - bank->irq_chip = devm_kmemdup(dev, &exynos_gpio_irq_chip, - sizeof(*bank->irq_chip), GFP_KERNEL); + if (bank->eint_con_offset) + bank->irq_chip = devm_kmemdup(dev, &exynosauto_gpio_irq_chip, + sizeof(*bank->irq_chip), GFP_KERNEL); + else + bank->irq_chip = devm_kmemdup(dev, &exynos_gpio_irq_chip, + sizeof(*bank->irq_chip), GFP_KERNEL); if (!bank->irq_chip) { ret = -ENOMEM; goto err_domains; @@ -655,6 +686,19 @@ static void exynos_pinctrl_suspend_bank( pr_debug("%s: save mask %#010x\n", bank->name, save->eint_mask); } +static void exynosauto_pinctrl_suspend_bank(struct samsung_pinctrl_drv_data *drvdata, + struct samsung_pin_bank *bank) +{ + struct exynos_eint_gpio_save *save = bank->soc_priv; + void __iomem *regs = bank->eint_base; + + save->eint_con = readl(regs + bank->pctl_offset + bank->eint_con_offset); + save->eint_mask = readl(regs + bank->pctl_offset + bank->eint_mask_offset); + + pr_debug("%s: save con %#010x\n", bank->name, save->eint_con); + pr_debug("%s: save mask %#010x\n", bank->name, save->eint_mask); +} + void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata) { struct samsung_pin_bank *bank = drvdata->pin_banks; @@ -662,8 +706,12 @@ void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata) int i; for (i = 0; i < drvdata->nr_banks; ++i, ++bank) { - if (bank->eint_type == EINT_TYPE_GPIO) - exynos_pinctrl_suspend_bank(drvdata, bank); + if (bank->eint_type == EINT_TYPE_GPIO) { + if (bank->eint_con_offset) + exynosauto_pinctrl_suspend_bank(drvdata, bank); + else + exynos_pinctrl_suspend_bank(drvdata, bank); + } else if (bank->eint_type == EINT_TYPE_WKUP) { if (!irq_chip) { irq_chip = bank->irq_chip; @@ -704,14 +752,33 @@ static void exynos_pinctrl_resume_bank( + bank->eint_offset); } +static void exynosauto_pinctrl_resume_bank(struct samsung_pinctrl_drv_data *drvdata, + struct samsung_pin_bank *bank) +{ + struct exynos_eint_gpio_save *save = bank->soc_priv; + void __iomem *regs = bank->eint_base; + + pr_debug("%s: con %#010x => %#010x\n", bank->name, + readl(regs + bank->pctl_offset + bank->eint_con_offset), save->eint_con); + pr_debug("%s: mask %#010x => %#010x\n", bank->name, + readl(regs + bank->pctl_offset + bank->eint_mask_offset), save->eint_mask); + + writel(save->eint_con, regs + bank->pctl_offset + bank->eint_con_offset); + writel(save->eint_mask, regs + bank->pctl_offset + bank->eint_mask_offset); +} + void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata) { struct samsung_pin_bank *bank = drvdata->pin_banks; int i; for (i = 0; i < drvdata->nr_banks; ++i, ++bank) - if (bank->eint_type == EINT_TYPE_GPIO) - exynos_pinctrl_resume_bank(drvdata, bank); + if (bank->eint_type == EINT_TYPE_GPIO) { + if (bank->eint_con_offset) + exynosauto_pinctrl_resume_bank(drvdata, bank); + else + exynos_pinctrl_resume_bank(drvdata, bank); + } } static void exynos_retention_enable(struct samsung_pinctrl_drv_data *drvdata) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h index 3ac52c2cf998..5049c170e958 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -31,6 +31,7 @@ #define EXYNOS7_WKUP_EMASK_OFFSET 0x900 #define EXYNOS7_WKUP_EPEND_OFFSET 0xA00 #define EXYNOS_SVC_OFFSET 0xB08 +#define EXYNOSAUTO_SVC_OFFSET 0xF008 /* helpers to access interrupt service register */ #define EXYNOS_SVC_GROUP_SHIFT 3 diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c index 79babbb39ced..362e99566919 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.c +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c @@ -1106,6 +1106,9 @@ samsung_pinctrl_get_soc_data(struct samsung_pinctrl_drv_data *d, bank->eint_type = bdata->eint_type; bank->eint_mask = bdata->eint_mask; bank->eint_offset = bdata->eint_offset; + bank->eint_con_offset = bdata->eint_con_offset; + bank->eint_mask_offset = bdata->eint_mask_offset; + bank->eint_pend_offset = bdata->eint_pend_offset; bank->name = bdata->name; raw_spin_lock_init(&bank->slock); diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h index 9b3db50adef3..789358bcd9c5 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.h +++ b/drivers/pinctrl/samsung/pinctrl-samsung.h @@ -122,6 +122,9 @@ struct samsung_pin_bank_type { * @eint_type: type of the external interrupt supported by the bank. * @eint_mask: bit mask of pins which support EINT function. * @eint_offset: SoC-specific EINT register or interrupt offset of bank. + * @eint_con_offset: ExynosAuto SoC-specific EINT control register offset of bank. + * @eint_mask_offset: ExynosAuto SoC-specific EINT mask register offset of bank. + * @eint_pend_offset: ExynosAuto SoC-specific EINT pend register offset of bank. * @name: name to be prefixed for each pin in this pin bank. */ struct samsung_pin_bank_data { @@ -133,6 +136,9 @@ struct samsung_pin_bank_data { enum eint_type eint_type; u32 eint_mask; u32 eint_offset; + u32 eint_con_offset; + u32 eint_mask_offset; + u32 eint_pend_offset; const char *name; }; @@ -147,6 +153,9 @@ struct samsung_pin_bank_data { * @eint_type: type of the external interrupt supported by the bank. * @eint_mask: bit mask of pins which support EINT function. * @eint_offset: SoC-specific EINT register or interrupt offset of bank. + * @eint_con_offset: ExynosAuto SoC-specific EINT register or interrupt offset of bank. + * @eint_mask_offset: ExynosAuto SoC-specific EINT mask register offset of bank. + * @eint_pend_offset: ExynosAuto SoC-specific EINT pend register offset of bank. * @name: name to be prefixed for each pin in this pin bank. * @id: id of the bank, propagated to the pin range. * @pin_base: starting pin number of the bank. @@ -170,6 +179,9 @@ struct samsung_pin_bank { enum eint_type eint_type; u32 eint_mask; u32 eint_offset; + u32 eint_con_offset; + u32 eint_mask_offset; + u32 eint_pend_offset; const char *name; u32 id;