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Wed, 02 Apr 2025 08:17:38 -0700 (PDT) From: Peter Griffin Date: Wed, 02 Apr 2025 16:17:30 +0100 Subject: [PATCH v6 1/4] pinctrl: samsung: refactor drvdata suspend & resume callbacks Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250402-pinctrl-fltcon-suspend-v6-1-78ce0d4eb30c@linaro.org> References: <20250402-pinctrl-fltcon-suspend-v6-0-78ce0d4eb30c@linaro.org> In-Reply-To: <20250402-pinctrl-fltcon-suspend-v6-0-78ce0d4eb30c@linaro.org> To: Krzysztof Kozlowski , Sylwester Nawrocki , Alim Akhtar , Linus Walleij Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, tudor.ambarus@linaro.org, willmcvicker@google.com, semen.protsenko@linaro.org, kernel-team@android.com, jaewon02.kim@samsung.com, Peter Griffin X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=10911; i=peter.griffin@linaro.org; h=from:subject:message-id; bh=SOyw3jdStYdySfM8lBPDNtxClYBS3HT3b7KLkFjw5bI=; b=owEBbAKT/ZANAwAKAc7ouNYCNHK6AcsmYgBn7VUORK1okRhy92aZ5/zfF/Uu4Lef42dODQBq+ NkN1s3qFfuJAjIEAAEKAB0WIQQO/I5vVXh1DVa1SfzO6LjWAjRyugUCZ+1VDgAKCRDO6LjWAjRy ujLbD/MGef9ZtKfw/6GtMkCSwqrst5lC7jROYLj2A1qiaz0Wan9N1nK9mxxr8cXoZNUnppMZB/k PPcQCER88cwn5G96+IQcuYOYbXDcqHJP65C8h4Fkxzy/hfEdJqpXTBOGBjgMvIWluXF4I7QZ5G9 pvV9BYmG3PYPCEakcPDbJsjh3i8p38cEuetrOIYnJw9PVM5DcrXsJ8CBPwcqv0Z3IILPKnw4fTL /mNC8XMJ50+k7Irz++wOHpuH7d7hlWCmuqFIPG2R9yuBtvnYdOtl9CTYsTYlylu7khed4xqrEWH 0Li1VcJG16pd7AQLcvQBpwOBylP+R1bcoDzI1YRRh63L6PZBiv6PMnBaOqOmZY9Y0WQ0NZ64fvR RulKxSpq928AXrJOCRdcmeo/ddDOkqb4zz4v+kytNTFfwSqQfIxigercuiC41P0A314tjHfsHph //I9zq9nLL+ayHmzh7GnG96DKF7TzEqCwhs5Ddo6I+2R18MnD98P+nnOolk8/kpS3u40hk2CrQI Ns8pcv4AxnOjonXWr044q9EY9yOvqQjp8ODptbGe7XV16/bpSoUE/hX3AppqV91hnHTpxv+yEtv 4jENH9oHPFOKn4S2s4XblEEg+Q2m6RFjAy7T9xTGWV+IUJc9ysibwShtqF3cOrDdJBDxE23MOUm On68kyrV+d7u7 X-Developer-Key: i=peter.griffin@linaro.org; a=openpgp; fpr=0EFC8E6F5578750D56B549FCCEE8B8D6023472BA This enables the clk_enable() and clk_disable() logic to be removed from each callback, but otherwise should have no functional impact. It is a prepatory patch so that the callbacks can become SoC specific. Signed-off-by: Peter Griffin --- Changes since v5: * Ensure it is symmetrically reversed (Krzysztof) --- drivers/pinctrl/samsung/pinctrl-exynos.c | 89 ++++++++----------------------- drivers/pinctrl/samsung/pinctrl-exynos.h | 4 +- drivers/pinctrl/samsung/pinctrl-samsung.c | 21 +++++--- drivers/pinctrl/samsung/pinctrl-samsung.h | 8 +-- 4 files changed, 42 insertions(+), 80 deletions(-) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 42093bae8bb79390f3c0ee7d387220b297af812b..ae82f42be83cf0a294452d7f44cd744295bb0408 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -762,19 +762,11 @@ __init int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) return 0; } -static void exynos_pinctrl_suspend_bank( - struct samsung_pinctrl_drv_data *drvdata, - struct samsung_pin_bank *bank) +static void exynos_pinctrl_suspend_bank(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; const void __iomem *regs = bank->eint_base; - if (clk_enable(bank->drvdata->pclk)) { - dev_err(bank->gpio_chip.parent, - "unable to enable clock for saving state\n"); - return; - } - save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET + bank->eint_offset); save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET @@ -784,71 +776,46 @@ static void exynos_pinctrl_suspend_bank( save->eint_mask = readl(regs + bank->irq_chip->eint_mask + bank->eint_offset); - clk_disable(bank->drvdata->pclk); - pr_debug("%s: save con %#010x\n", bank->name, save->eint_con); pr_debug("%s: save fltcon0 %#010x\n", bank->name, save->eint_fltcon0); pr_debug("%s: save fltcon1 %#010x\n", bank->name, save->eint_fltcon1); 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) +static void exynosauto_pinctrl_suspend_bank(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; const void __iomem *regs = bank->eint_base; - if (clk_enable(bank->drvdata->pclk)) { - dev_err(bank->gpio_chip.parent, - "unable to enable clock for saving state\n"); - return; - } - save->eint_con = readl(regs + bank->pctl_offset + bank->eint_con_offset); save->eint_mask = readl(regs + bank->pctl_offset + bank->eint_mask_offset); - clk_disable(bank->drvdata->pclk); - 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) +void exynos_pinctrl_suspend(struct samsung_pin_bank *bank) { - struct samsung_pin_bank *bank = drvdata->pin_banks; struct exynos_irq_chip *irq_chip = NULL; - int i; - for (i = 0; i < drvdata->nr_banks; ++i, ++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; - irq_chip->set_eint_wakeup_mask(drvdata, - irq_chip); - } + if (bank->eint_type == EINT_TYPE_GPIO) { + if (bank->eint_con_offset) + exynosauto_pinctrl_suspend_bank(bank); + else + exynos_pinctrl_suspend_bank(bank); + } else if (bank->eint_type == EINT_TYPE_WKUP) { + if (!irq_chip) { + irq_chip = bank->irq_chip; + irq_chip->set_eint_wakeup_mask(bank->drvdata, irq_chip); } } } -static void exynos_pinctrl_resume_bank( - struct samsung_pinctrl_drv_data *drvdata, - struct samsung_pin_bank *bank) +static void exynos_pinctrl_resume_bank(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; void __iomem *regs = bank->eint_base; - if (clk_enable(bank->drvdata->pclk)) { - dev_err(bank->gpio_chip.parent, - "unable to enable clock for restoring state\n"); - return; - } - pr_debug("%s: con %#010x => %#010x\n", bank->name, readl(regs + EXYNOS_GPIO_ECON_OFFSET + bank->eint_offset), save->eint_con); @@ -870,22 +837,13 @@ static void exynos_pinctrl_resume_bank( + 2 * bank->eint_offset + 4); writel(save->eint_mask, regs + bank->irq_chip->eint_mask + bank->eint_offset); - - clk_disable(bank->drvdata->pclk); } -static void exynosauto_pinctrl_resume_bank(struct samsung_pinctrl_drv_data *drvdata, - struct samsung_pin_bank *bank) +static void exynosauto_pinctrl_resume_bank(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; void __iomem *regs = bank->eint_base; - if (clk_enable(bank->drvdata->pclk)) { - dev_err(bank->gpio_chip.parent, - "unable to enable clock for restoring state\n"); - return; - } - 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, @@ -894,21 +852,16 @@ static void exynosauto_pinctrl_resume_bank(struct samsung_pinctrl_drv_data *drvd writel(save->eint_con, regs + bank->pctl_offset + bank->eint_con_offset); writel(save->eint_mask, regs + bank->pctl_offset + bank->eint_mask_offset); - clk_disable(bank->drvdata->pclk); } -void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata) +void exynos_pinctrl_resume(struct samsung_pin_bank *bank) { - 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) { - if (bank->eint_con_offset) - exynosauto_pinctrl_resume_bank(drvdata, bank); - else - exynos_pinctrl_resume_bank(drvdata, bank); - } + if (bank->eint_type == EINT_TYPE_GPIO) { + if (bank->eint_con_offset) + exynosauto_pinctrl_resume_bank(bank); + else + exynos_pinctrl_resume_bank(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 b483270ddc53c0b0e8d0f425cd7b0f59e6a894da..341155c1abd153eb3efec5212b268ccfa535bd8e 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -240,8 +240,8 @@ struct exynos_muxed_weint_data { int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d); int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d); -void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata); -void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata); +void exynos_pinctrl_suspend(struct samsung_pin_bank *bank); +void exynos_pinctrl_resume(struct samsung_pin_bank *bank); struct samsung_retention_ctrl * exynos_retention_init(struct samsung_pinctrl_drv_data *drvdata, const struct samsung_retention_data *data); diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c index 2896eb2de2c098c72adc4de5c9d72bb2b7e46bdb..ef557217e173af905c1667c6a167c5c77057e254 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.c +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c @@ -1333,6 +1333,7 @@ static int samsung_pinctrl_probe(struct platform_device *pdev) static int __maybe_unused samsung_pinctrl_suspend(struct device *dev) { struct samsung_pinctrl_drv_data *drvdata = dev_get_drvdata(dev); + struct samsung_pin_bank *bank; int i; i = clk_enable(drvdata->pclk); @@ -1343,7 +1344,7 @@ static int __maybe_unused samsung_pinctrl_suspend(struct device *dev) } for (i = 0; i < drvdata->nr_banks; i++) { - struct samsung_pin_bank *bank = &drvdata->pin_banks[i]; + bank = &drvdata->pin_banks[i]; const void __iomem *reg = bank->pctl_base + bank->pctl_offset; const u8 *offs = bank->type->reg_offset; const u8 *widths = bank->type->fld_width; @@ -1371,10 +1372,14 @@ static int __maybe_unused samsung_pinctrl_suspend(struct device *dev) } } + for (i = 0; i < drvdata->nr_banks; i++) { + bank = &drvdata->pin_banks[i]; + if (drvdata->suspend) + drvdata->suspend(bank); + } + clk_disable(drvdata->pclk); - if (drvdata->suspend) - drvdata->suspend(drvdata); if (drvdata->retention_ctrl && drvdata->retention_ctrl->enable) drvdata->retention_ctrl->enable(drvdata); @@ -1392,6 +1397,7 @@ static int __maybe_unused samsung_pinctrl_suspend(struct device *dev) static int __maybe_unused samsung_pinctrl_resume(struct device *dev) { struct samsung_pinctrl_drv_data *drvdata = dev_get_drvdata(dev); + struct samsung_pin_bank *bank; int ret; int i; @@ -1406,11 +1412,14 @@ static int __maybe_unused samsung_pinctrl_resume(struct device *dev) return ret; } - if (drvdata->resume) - drvdata->resume(drvdata); + for (i = 0; i < drvdata->nr_banks; i++) { + bank = &drvdata->pin_banks[i]; + if (drvdata->resume) + drvdata->resume(bank); + } for (i = 0; i < drvdata->nr_banks; i++) { - struct samsung_pin_bank *bank = &drvdata->pin_banks[i]; + bank = &drvdata->pin_banks[i]; void __iomem *reg = bank->pctl_base + bank->pctl_offset; const u8 *offs = bank->type->reg_offset; const u8 *widths = bank->type->fld_width; diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h index 3cf758df7d69127a1b012105eebcfbba45c993f2..fcc57c244d167db1de8c7aceffa6a9e7484bf348 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.h +++ b/drivers/pinctrl/samsung/pinctrl-samsung.h @@ -285,8 +285,8 @@ struct samsung_pin_ctrl { int (*eint_gpio_init)(struct samsung_pinctrl_drv_data *); int (*eint_wkup_init)(struct samsung_pinctrl_drv_data *); void (*pud_value_init)(struct samsung_pinctrl_drv_data *drvdata); - void (*suspend)(struct samsung_pinctrl_drv_data *); - void (*resume)(struct samsung_pinctrl_drv_data *); + void (*suspend)(struct samsung_pin_bank *bank); + void (*resume)(struct samsung_pin_bank *bank); }; /** @@ -335,8 +335,8 @@ struct samsung_pinctrl_drv_data { struct samsung_retention_ctrl *retention_ctrl; - void (*suspend)(struct samsung_pinctrl_drv_data *); - void (*resume)(struct samsung_pinctrl_drv_data *); + void (*suspend)(struct samsung_pin_bank *bank); + void (*resume)(struct samsung_pin_bank *bank); }; /** From patchwork Wed Apr 2 15:17:31 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Griffin X-Patchwork-Id: 878045 Received: from mail-wr1-f50.google.com (mail-wr1-f50.google.com [209.85.221.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6057323BCEC for ; 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a=openpgp; fpr=0EFC8E6F5578750D56B549FCCEE8B8D6023472BA Refactor the existing platform specific suspend/resume callback so that each SoC variant has it's own callback containing the SoC specific logic. This allows exynosautov920 to have a dedicated function for using eint_con_offset and eint_mask_offset. Also it is easily extendable for gs101 which will need dedicated logic for handling the varying register offset of fltcon0 via eint_fltcon_offset. Reviewed-by: André Draszik Signed-off-by: Peter Griffin --- Changes since v4: * split the clk_enable/clk_disable refactor parts into separate patch (Krzystof) Changes since v3: * save->eint_fltcon1 is an argument to pr_debug(), not readl() change alignment accordingly (Andre) Changes since v2: * Remove useless init (Andre) * make it clear set_wakeup is conditional on bank->eint_type (Andre) Changes since v1: * Split code refactor & gs101 parts into separate patches (Andre) --- drivers/pinctrl/samsung/pinctrl-exynos-arm64.c | 28 ++--- drivers/pinctrl/samsung/pinctrl-exynos.c | 152 +++++++++++++------------ drivers/pinctrl/samsung/pinctrl-exynos.h | 2 + 3 files changed, 97 insertions(+), 85 deletions(-) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c b/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c index dd07720e32cc09ea1d5a20c8d1cbea3bcff79204..4b5d4e436a337ff13dee6ef740a1500eaf86cc12 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c @@ -1419,8 +1419,8 @@ static const struct samsung_pin_ctrl exynosautov920_pin_ctrl[] = { .pin_banks = exynosautov920_pin_banks0, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks0), .eint_wkup_init = exynos_eint_wkup_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, .retention_data = &exynosautov920_retention_data, }, { /* pin-controller instance 1 AUD data */ @@ -1431,43 +1431,43 @@ static const struct samsung_pin_ctrl exynosautov920_pin_ctrl[] = { .pin_banks = exynosautov920_pin_banks2, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks2), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, }, { /* pin-controller instance 3 HSI1 data */ .pin_banks = exynosautov920_pin_banks3, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks3), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, }, { /* pin-controller instance 4 HSI2 data */ .pin_banks = exynosautov920_pin_banks4, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks4), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, }, { /* pin-controller instance 5 HSI2UFS data */ .pin_banks = exynosautov920_pin_banks5, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks5), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, }, { /* pin-controller instance 6 PERIC0 data */ .pin_banks = exynosautov920_pin_banks6, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks6), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, }, { /* pin-controller instance 7 PERIC1 data */ .pin_banks = exynosautov920_pin_banks7, .nr_banks = ARRAY_SIZE(exynosautov920_pin_banks7), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = exynosautov920_pinctrl_suspend, + .resume = exynosautov920_pinctrl_resume, }, }; diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index ae82f42be83cf0a294452d7f44cd744295bb0408..18c327f7e313355c4aba72f49a79b1697244f1ba 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -762,105 +762,115 @@ __init int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) return 0; } -static void exynos_pinctrl_suspend_bank(struct samsung_pin_bank *bank) +static void exynos_set_wakeup(struct samsung_pin_bank *bank) { - struct exynos_eint_gpio_save *save = bank->soc_priv; - const void __iomem *regs = bank->eint_base; + struct exynos_irq_chip *irq_chip; - save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET - + bank->eint_offset); - save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET - + 2 * bank->eint_offset); - save->eint_fltcon1 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET - + 2 * bank->eint_offset + 4); - save->eint_mask = readl(regs + bank->irq_chip->eint_mask - + bank->eint_offset); - - pr_debug("%s: save con %#010x\n", bank->name, save->eint_con); - pr_debug("%s: save fltcon0 %#010x\n", bank->name, save->eint_fltcon0); - pr_debug("%s: save fltcon1 %#010x\n", bank->name, save->eint_fltcon1); - pr_debug("%s: save mask %#010x\n", bank->name, save->eint_mask); + if (bank->irq_chip) { + irq_chip = bank->irq_chip; + irq_chip->set_eint_wakeup_mask(bank->drvdata, irq_chip); + } } -static void exynosauto_pinctrl_suspend_bank(struct samsung_pin_bank *bank) +void exynos_pinctrl_suspend(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; const 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); + if (bank->eint_type == EINT_TYPE_GPIO) { + save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET + + bank->eint_offset); + save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET + + 2 * bank->eint_offset); + save->eint_fltcon1 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET + + 2 * bank->eint_offset + 4); + save->eint_mask = readl(regs + bank->irq_chip->eint_mask + + bank->eint_offset); + + pr_debug("%s: save con %#010x\n", + bank->name, save->eint_con); + pr_debug("%s: save fltcon0 %#010x\n", + bank->name, save->eint_fltcon0); + pr_debug("%s: save fltcon1 %#010x\n", + bank->name, save->eint_fltcon1); + pr_debug("%s: save mask %#010x\n", + bank->name, save->eint_mask); + } else if (bank->eint_type == EINT_TYPE_WKUP) { + exynos_set_wakeup(bank); + } } -void exynos_pinctrl_suspend(struct samsung_pin_bank *bank) +void exynosautov920_pinctrl_suspend(struct samsung_pin_bank *bank) { - struct exynos_irq_chip *irq_chip = NULL; + struct exynos_eint_gpio_save *save = bank->soc_priv; + const void __iomem *regs = bank->eint_base; if (bank->eint_type == EINT_TYPE_GPIO) { - if (bank->eint_con_offset) - exynosauto_pinctrl_suspend_bank(bank); - else - exynos_pinctrl_suspend_bank(bank); + 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); } else if (bank->eint_type == EINT_TYPE_WKUP) { - if (!irq_chip) { - irq_chip = bank->irq_chip; - irq_chip->set_eint_wakeup_mask(bank->drvdata, irq_chip); - } + exynos_set_wakeup(bank); } } -static void exynos_pinctrl_resume_bank(struct samsung_pin_bank *bank) +void exynos_pinctrl_resume(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 + EXYNOS_GPIO_ECON_OFFSET - + bank->eint_offset), save->eint_con); - pr_debug("%s: fltcon0 %#010x => %#010x\n", bank->name, - readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET - + 2 * bank->eint_offset), save->eint_fltcon0); - pr_debug("%s: fltcon1 %#010x => %#010x\n", bank->name, - readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET - + 2 * bank->eint_offset + 4), save->eint_fltcon1); - pr_debug("%s: mask %#010x => %#010x\n", bank->name, - readl(regs + bank->irq_chip->eint_mask - + bank->eint_offset), save->eint_mask); - - writel(save->eint_con, regs + EXYNOS_GPIO_ECON_OFFSET - + bank->eint_offset); - writel(save->eint_fltcon0, regs + EXYNOS_GPIO_EFLTCON_OFFSET - + 2 * bank->eint_offset); - writel(save->eint_fltcon1, regs + EXYNOS_GPIO_EFLTCON_OFFSET - + 2 * bank->eint_offset + 4); - writel(save->eint_mask, regs + bank->irq_chip->eint_mask - + bank->eint_offset); + if (bank->eint_type == EINT_TYPE_GPIO) { + pr_debug("%s: con %#010x => %#010x\n", bank->name, + readl(regs + EXYNOS_GPIO_ECON_OFFSET + + bank->eint_offset), save->eint_con); + pr_debug("%s: fltcon0 %#010x => %#010x\n", bank->name, + readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET + + 2 * bank->eint_offset), save->eint_fltcon0); + pr_debug("%s: fltcon1 %#010x => %#010x\n", bank->name, + readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET + + 2 * bank->eint_offset + 4), + save->eint_fltcon1); + pr_debug("%s: mask %#010x => %#010x\n", bank->name, + readl(regs + bank->irq_chip->eint_mask + + bank->eint_offset), save->eint_mask); + + writel(save->eint_con, regs + EXYNOS_GPIO_ECON_OFFSET + + bank->eint_offset); + writel(save->eint_fltcon0, regs + EXYNOS_GPIO_EFLTCON_OFFSET + + 2 * bank->eint_offset); + writel(save->eint_fltcon1, regs + EXYNOS_GPIO_EFLTCON_OFFSET + + 2 * bank->eint_offset + 4); + writel(save->eint_mask, regs + bank->irq_chip->eint_mask + + bank->eint_offset); + } } -static void exynosauto_pinctrl_resume_bank(struct samsung_pin_bank *bank) +void exynosautov920_pinctrl_resume(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_pin_bank *bank) -{ if (bank->eint_type == EINT_TYPE_GPIO) { - if (bank->eint_con_offset) - exynosauto_pinctrl_resume_bank(bank); - else - exynos_pinctrl_resume_bank(bank); + /* exynosautov920 has eint_con_offset for all but one bank */ + if (!bank->eint_con_offset) + exynos_pinctrl_resume(bank); + + 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); } } diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h index 341155c1abd153eb3efec5212b268ccfa535bd8e..3a771862b4b1762b32f9e067b011e80cfebb99d2 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -240,6 +240,8 @@ struct exynos_muxed_weint_data { int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d); 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Wed, 02 Apr 2025 08:17:41 -0700 (PDT) Received: from gpeter-l.roam.corp.google.com ([145.224.66.90]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c0b663860sm17469190f8f.39.2025.04.02.08.17.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Apr 2025 08:17:41 -0700 (PDT) From: Peter Griffin Date: Wed, 02 Apr 2025 16:17:32 +0100 Subject: [PATCH v6 3/4] pinctrl: samsung: add gs101 specific eint suspend/resume callbacks Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250402-pinctrl-fltcon-suspend-v6-3-78ce0d4eb30c@linaro.org> References: <20250402-pinctrl-fltcon-suspend-v6-0-78ce0d4eb30c@linaro.org> In-Reply-To: <20250402-pinctrl-fltcon-suspend-v6-0-78ce0d4eb30c@linaro.org> To: Krzysztof Kozlowski , Sylwester Nawrocki , Alim Akhtar , Linus Walleij Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, tudor.ambarus@linaro.org, willmcvicker@google.com, semen.protsenko@linaro.org, kernel-team@android.com, jaewon02.kim@samsung.com, Peter Griffin , stable@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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a=openpgp; fpr=0EFC8E6F5578750D56B549FCCEE8B8D6023472BA gs101 differs to other SoCs in that fltcon1 register doesn't always exist. Additionally the offset of fltcon0 is not fixed and needs to use the newly added eint_fltcon_offset variable. Fixes: 4a8be01a1a7a ("pinctrl: samsung: Add gs101 SoC pinctrl configuration") Cc: stable@vger.kernel.org # depends on the previous three patches Reviewed-by: André Draszik Signed-off-by: Peter Griffin --- Changes since v2: * make it clear exynos_set_wakeup(bank) is conditional on bank type (Andre) * align style where the '+' is placed (Andre) * remove unnecessary braces (Andre) --- drivers/pinctrl/samsung/pinctrl-exynos-arm64.c | 24 ++++----- drivers/pinctrl/samsung/pinctrl-exynos.c | 71 ++++++++++++++++++++++++++ drivers/pinctrl/samsung/pinctrl-exynos.h | 2 + 3 files changed, 85 insertions(+), 12 deletions(-) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c b/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c index 4b5d4e436a337ff13dee6ef740a1500eaf86cc12..9fd894729a7b87c3e144ff90921a1cadbde93d3d 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos-arm64.c @@ -1762,15 +1762,15 @@ static const struct samsung_pin_ctrl gs101_pin_ctrl[] __initconst = { .pin_banks = gs101_pin_alive, .nr_banks = ARRAY_SIZE(gs101_pin_alive), .eint_wkup_init = exynos_eint_wkup_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = gs101_pinctrl_suspend, + .resume = gs101_pinctrl_resume, }, { /* pin banks of gs101 pin-controller (FAR_ALIVE) */ .pin_banks = gs101_pin_far_alive, .nr_banks = ARRAY_SIZE(gs101_pin_far_alive), .eint_wkup_init = exynos_eint_wkup_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = gs101_pinctrl_suspend, + .resume = gs101_pinctrl_resume, }, { /* pin banks of gs101 pin-controller (GSACORE) */ .pin_banks = gs101_pin_gsacore, @@ -1784,29 +1784,29 @@ static const struct samsung_pin_ctrl gs101_pin_ctrl[] __initconst = { .pin_banks = gs101_pin_peric0, .nr_banks = ARRAY_SIZE(gs101_pin_peric0), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = gs101_pinctrl_suspend, + .resume = gs101_pinctrl_resume, }, { /* pin banks of gs101 pin-controller (PERIC1) */ .pin_banks = gs101_pin_peric1, .nr_banks = ARRAY_SIZE(gs101_pin_peric1), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = gs101_pinctrl_suspend, + .resume = gs101_pinctrl_resume, }, { /* pin banks of gs101 pin-controller (HSI1) */ .pin_banks = gs101_pin_hsi1, .nr_banks = ARRAY_SIZE(gs101_pin_hsi1), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = gs101_pinctrl_suspend, + .resume = gs101_pinctrl_resume, }, { /* pin banks of gs101 pin-controller (HSI2) */ .pin_banks = gs101_pin_hsi2, .nr_banks = ARRAY_SIZE(gs101_pin_hsi2), .eint_gpio_init = exynos_eint_gpio_init, - .suspend = exynos_pinctrl_suspend, - .resume = exynos_pinctrl_resume, + .suspend = gs101_pinctrl_suspend, + .resume = gs101_pinctrl_resume, }, }; diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 18c327f7e313355c4aba72f49a79b1697244f1ba..0879684338c772e484174a94ac2c274cc7d932ed 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -800,6 +800,41 @@ void exynos_pinctrl_suspend(struct samsung_pin_bank *bank) } } +void gs101_pinctrl_suspend(struct samsung_pin_bank *bank) +{ + struct exynos_eint_gpio_save *save = bank->soc_priv; + const void __iomem *regs = bank->eint_base; + + if (bank->eint_type == EINT_TYPE_GPIO) { + save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET + + bank->eint_offset); + + save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET + + bank->eint_fltcon_offset); + + /* fltcon1 register only exists for pins 4-7 */ + if (bank->nr_pins > 4) + save->eint_fltcon1 = readl(regs + + EXYNOS_GPIO_EFLTCON_OFFSET + + bank->eint_fltcon_offset + 4); + + save->eint_mask = readl(regs + bank->irq_chip->eint_mask + + bank->eint_offset); + + pr_debug("%s: save con %#010x\n", + bank->name, save->eint_con); + pr_debug("%s: save fltcon0 %#010x\n", + bank->name, save->eint_fltcon0); + if (bank->nr_pins > 4) + pr_debug("%s: save fltcon1 %#010x\n", + bank->name, save->eint_fltcon1); + pr_debug("%s: save mask %#010x\n", + bank->name, save->eint_mask); + } else if (bank->eint_type == EINT_TYPE_WKUP) { + exynos_set_wakeup(bank); + } +} + void exynosautov920_pinctrl_suspend(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; @@ -819,6 +854,42 @@ void exynosautov920_pinctrl_suspend(struct samsung_pin_bank *bank) } } +void gs101_pinctrl_resume(struct samsung_pin_bank *bank) +{ + struct exynos_eint_gpio_save *save = bank->soc_priv; + + void __iomem *regs = bank->eint_base; + void __iomem *eint_fltcfg0 = regs + EXYNOS_GPIO_EFLTCON_OFFSET + + bank->eint_fltcon_offset; + + if (bank->eint_type == EINT_TYPE_GPIO) { + pr_debug("%s: con %#010x => %#010x\n", bank->name, + readl(regs + EXYNOS_GPIO_ECON_OFFSET + + bank->eint_offset), save->eint_con); + + pr_debug("%s: fltcon0 %#010x => %#010x\n", bank->name, + readl(eint_fltcfg0), save->eint_fltcon0); + + /* fltcon1 register only exists for pins 4-7 */ + if (bank->nr_pins > 4) + pr_debug("%s: fltcon1 %#010x => %#010x\n", bank->name, + readl(eint_fltcfg0 + 4), save->eint_fltcon1); + + pr_debug("%s: mask %#010x => %#010x\n", bank->name, + readl(regs + bank->irq_chip->eint_mask + + bank->eint_offset), save->eint_mask); + + writel(save->eint_con, regs + EXYNOS_GPIO_ECON_OFFSET + + bank->eint_offset); + writel(save->eint_fltcon0, eint_fltcfg0); + + if (bank->nr_pins > 4) + writel(save->eint_fltcon1, eint_fltcfg0 + 4); + writel(save->eint_mask, regs + bank->irq_chip->eint_mask + + bank->eint_offset); + } +} + void exynos_pinctrl_resume(struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h index 3a771862b4b1762b32f9e067b011e80cfebb99d2..2bee52b61b9317ff79c618c1dc53e98242805087 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -244,6 +244,8 @@ void exynosautov920_pinctrl_resume(struct samsung_pin_bank *bank); 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Wed, 02 Apr 2025 08:17:44 -0700 (PDT) Received: from gpeter-l.roam.corp.google.com ([145.224.66.90]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c0b663860sm17469190f8f.39.2025.04.02.08.17.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Apr 2025 08:17:43 -0700 (PDT) From: Peter Griffin Date: Wed, 02 Apr 2025 16:17:33 +0100 Subject: [PATCH v6 4/4] pinctrl: samsung: Add filter selection support for alive bank on gs101 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250402-pinctrl-fltcon-suspend-v6-4-78ce0d4eb30c@linaro.org> References: <20250402-pinctrl-fltcon-suspend-v6-0-78ce0d4eb30c@linaro.org> In-Reply-To: <20250402-pinctrl-fltcon-suspend-v6-0-78ce0d4eb30c@linaro.org> To: Krzysztof Kozlowski , Sylwester Nawrocki , Alim Akhtar , Linus Walleij Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, tudor.ambarus@linaro.org, willmcvicker@google.com, semen.protsenko@linaro.org, kernel-team@android.com, jaewon02.kim@samsung.com, Peter Griffin X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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a=openpgp; fpr=0EFC8E6F5578750D56B549FCCEE8B8D6023472BA Newer Exynos based SoCs have a filter selection bitfield in the filter configuration registers on alive bank pins. This allows the selection of a digital or analog delay filter for each pin. Add support for selecting and enabling the filter. On suspend we set the analog filter to all pins in the bank (as the digital filter relies on a clock). On resume the digital filter is reapplied to all pins in the bank. The digital filter is working via a clock and has an adjustable filter delay flt_width bitfield, whereas the analog filter uses a fixed delay. The filter determines to what extent signal fluctuations received through the pad are considered glitches. The code path can be exercised using echo mem > /sys/power/state And then wake the device using a eint gpio Reviewed-by: André Draszik Signed-off-by: Peter Griffin --- Changes since v2: * Ensure EXYNOS_FLTCON_DIGITAL bit is cleared (Andre) * Make it obvious that exynos_eint_set_filter() is conditional on bank type (Andre) Changes since v1: * Remove eint_flt_selectable bool as it can be deduced from EINT_TYPE_WKUP (Peter) * Move filter config comment to header (Andre) * Rename EXYNOS_FLTCON_DELAY to EXYNOS_FLTCON_ANALOG (Andre) * Remove misleading old comment (Andre) * Refactor exynos_eint_update_flt_reg() into a loop (Andre) Note: this patch was previously sent as part of the initial gs101/ Pixel 6 series and was dropped in v6. This new version incorporates the review feedback from Sam Protsenko here in v5. Link: https://lore.kernel.org/all/20231201160925.3136868-1-peter.griffin@linaro.org/T/#m79ced98939e895c840d812c8b4c2b3f33ce604c8 Changes since previous version * Drop fltcon_type enum and use bool eint_flt_selectable (Sam) * Refactor and add exynos_eint_update_flt_reg() (Sam) * Rename function to exynos_eint_set_filter() for easier readability (Sam) * Remove comments and `if bank->fltcon_type != FLT_DEFAULT)` checks and indentation (Sam) --- drivers/pinctrl/samsung/pinctrl-exynos.c | 34 ++++++++++++++++++++++++++++++++ drivers/pinctrl/samsung/pinctrl-exynos.h | 20 +++++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 0879684338c772e484174a94ac2c274cc7d932ed..f3e1c11abe55032ee4ed7eb4db861dbb1e60c2bf 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -370,6 +370,37 @@ struct exynos_eint_gpio_save { u32 eint_mask; }; +static void exynos_eint_update_flt_reg(void __iomem *reg, int cnt, int con) +{ + unsigned int val, shift; + int i; + + val = readl(reg); + for (i = 0; i < cnt; i++) { + shift = i * EXYNOS_FLTCON_LEN; + val &= ~(EXYNOS_FLTCON_DIGITAL << shift); + val |= con << shift; + } + writel(val, reg); +} + +/* + * Set the desired filter (digital or analog delay) and enable it to + * every pin in the bank. Note the filter selection bitfield is only + * found on alive banks. The filter determines to what extent signal + * fluctuations received through the pad are considered glitches. + */ +static void exynos_eint_set_filter(struct samsung_pin_bank *bank, int filter) +{ + unsigned int off = EXYNOS_GPIO_EFLTCON_OFFSET + bank->eint_fltcon_offset; + void __iomem *reg = bank->drvdata->virt_base + off; + unsigned int con = EXYNOS_FLTCON_EN | filter; + + for (int n = 0; n < bank->nr_pins; n += 4) + exynos_eint_update_flt_reg(reg + n, + min(bank->nr_pins - n, 4), con); +} + /* * exynos_eint_gpio_init() - setup handling of external gpio interrupts. * @d: driver data of samsung pinctrl driver. @@ -832,6 +863,7 @@ void gs101_pinctrl_suspend(struct samsung_pin_bank *bank) bank->name, save->eint_mask); } else if (bank->eint_type == EINT_TYPE_WKUP) { exynos_set_wakeup(bank); + exynos_eint_set_filter(bank, EXYNOS_FLTCON_ANALOG); } } @@ -887,6 +919,8 @@ void gs101_pinctrl_resume(struct samsung_pin_bank *bank) writel(save->eint_fltcon1, eint_fltcfg0 + 4); writel(save->eint_mask, regs + bank->irq_chip->eint_mask + bank->eint_offset); + } else if (bank->eint_type == EINT_TYPE_WKUP) { + exynos_eint_set_filter(bank, EXYNOS_FLTCON_DIGITAL); } } diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h index 2bee52b61b9317ff79c618c1dc53e98242805087..362dc533186fb4ab9926b38b8d34af07690f783d 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -52,6 +52,26 @@ #define EXYNOS_EINT_MAX_PER_BANK 8 #define EXYNOS_EINT_NR_WKUP_EINT +/* + * EINT filter configuration register (on alive banks) has + * the following layout. + * + * BitfieldName[PinNum][Bit:Bit] + * FLT_EN[3][31] FLT_SEL[3][30] FLT_WIDTH[3][29:24] + * FLT_EN[2][23] FLT_SEL[2][22] FLT_WIDTH[2][21:16] + * FLT_EN[1][15] FLT_SEL[1][14] FLT_WIDTH[1][13:8] + * FLT_EN[0][7] FLT_SEL[0][6] FLT_WIDTH[0][5:0] + * + * FLT_EN 0x0 = Disable, 0x1=Enable + * FLT_SEL 0x0 = Analog delay filter, 0x1 Digital filter (clock count) + * FLT_WIDTH Filtering width. Valid when FLT_SEL is 0x1 + */ + +#define EXYNOS_FLTCON_EN BIT(7) +#define EXYNOS_FLTCON_DIGITAL BIT(6) +#define EXYNOS_FLTCON_ANALOG (0 << 6) +#define EXYNOS_FLTCON_LEN 8 + #define EXYNOS_PIN_BANK_EINTN(pins, reg, id) \ { \ .type = &bank_type_off, \