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[203.254.224.33]) by mx.google.com with ESMTP id gt5si4046135pbc.13.2012.08.15.12.40.35; Wed, 15 Aug 2012 12:40:35 -0700 (PDT) Received-SPF: neutral (google.com: 203.254.224.33 is neither permitted nor denied by best guess record for domain of thomas.abraham@linaro.org) client-ip=203.254.224.33; Authentication-Results: mx.google.com; spf=neutral (google.com: 203.254.224.33 is neither permitted nor denied by best guess record for domain of thomas.abraham@linaro.org) smtp.mail=thomas.abraham@linaro.org Received: from epcpsbgm1.samsung.com (mailout3.samsung.com [203.254.224.33]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0M8T00M0XANDZP00@mailout3.samsung.com>; Thu, 16 Aug 2012 04:40:34 +0900 (KST) X-AuditID: cbfee61a-b7fc66d0000043b7-04-502bfb32c622 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 2B.13.17335.23BFB205; Thu, 16 Aug 2012 04:40:34 +0900 (KST) Received: from localhost.localdomain ([107.108.73.37]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0M8T009KRANCNZB0@mmp1.samsung.com>; Thu, 16 Aug 2012 04:40:34 +0900 (KST) From: Thomas Abraham To: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linus.walleij@linaro.org, grant.likely@secretlab.ca, rob.herring@calxeda.com, kgene.kim@samsung.com, patches@linaro.org Subject: [PATCH v2 2/4] pinctrl: add exynos4210 specific extensions for samsung pinctrl driver Date: Thu, 16 Aug 2012 01:27:34 +0530 Message-id: <1345060656-32201-3-git-send-email-thomas.abraham@linaro.org> X-Mailer: git-send-email 1.6.6.rc2 In-reply-to: <1345060656-32201-1-git-send-email-thomas.abraham@linaro.org> References: <1345060656-32201-1-git-send-email-thomas.abraham@linaro.org> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrFJMWRmVeSWpSXmKPExsVy+t9jAV2j39oBBvd3ilhM+bOcyWLK4S8s Dkwed67tYQtgjOKySUnNySxLLdK3S+DKODlnPVPBrqeMFbs7dRoYtx9m7GLk5JAQMJF4v+Ib G4QtJnHh3nogm4tDSGARo8TP1j1MEE4bk8SqG7eYQKrYBAwkHi18xw5iiwgoSGzufcYKUsQs cIJR4nbfSbCEsECCxNepN8AaWARUJT7OWs8CYvMKeEpMbfnPBLFOSWJD71Ewm1PAS+LzzE5W EFsIqKat/RzrBEbeBYwMqxhFUwuSC4qT0nMN9YoTc4tL89L1kvNzNzGCQ+CZ1A7GlQ0WhxgF OBiVeHgZDmoFCLEmlhVX5h5ilOBgVhLh/XFKO0CINyWxsiq1KD++qDQntfgQozQHi5I4r7H3 V38hgfTEktTs1NSC1CKYLBMHp1QDo3r6o5zjAr9XBi0WVV4y82tdBPsX82PP2Vfc/j/3Quz6 tzNFW/58ExVo9Ppds4Rj4b85epUTrmn3bHSU9qiRellYWV4fePvgtZdGB7QbRfUvxxQ0xGan ZbuuzX7wbvbpi9ufqaeGR+9Sfraj/I++fVC74J2qpofhfQHPb11emcB4UzMpcJOXjxJLcUai oRZzUXEiADo68tn9AQAA X-TM-AS-MML: No X-Gm-Message-State: ALoCoQmWTuRwrm6bpclWrgDvvk1V1juixo3kk7R7WDQzi9zgqfhLZYUNbVu8nzhTd1vjOYWFroQb Add information about the Exynos4210 pin banks and driver data which is used by the Samsung pinctrl driver. In addition to this, the support for external gpio and wakeup interrupt support is included and hooked up with the Samsung pinctrl driver. Cc: Linus Walleij Cc: Kukjin Kim Signed-off-by: Thomas Abraham --- drivers/pinctrl/Kconfig | 7 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-exynos.c | 555 ++++++++++++++++++++++++++++++++++++++ drivers/pinctrl/pinctrl-exynos.h | 213 +++++++++++++++ 4 files changed, 776 insertions(+), 0 deletions(-) create mode 100644 drivers/pinctrl/pinctrl-exynos.c create mode 100644 drivers/pinctrl/pinctrl-exynos.h diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 0d2398f..858afa5 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -165,6 +165,13 @@ config PINCTRL_SAMSUNG bool "Samsung pinctrl driver" depends on OF +config PINCTRL_EXYNOS4 + bool "Pinctrl driver data for Exynos4 SoC" + depends on ARCH_EXYNOS4 && OF + depends on PINCTRL_SAMSUNG + select PINMUX + select PINCONF + source "drivers/pinctrl/spear/Kconfig" endmenu diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 7155301..9665411 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -33,5 +33,6 @@ obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o obj-$(CONFIG_PINCTRL_SAMSUNG) += pinctrl-samsung.o +obj-$(CONFIG_PINCTRL_EXYNOS4) += pinctrl-exynos.o obj-$(CONFIG_PLAT_SPEAR) += spear/ diff --git a/drivers/pinctrl/pinctrl-exynos.c b/drivers/pinctrl/pinctrl-exynos.c new file mode 100644 index 0000000..f279506 --- /dev/null +++ b/drivers/pinctrl/pinctrl-exynos.c @@ -0,0 +1,555 @@ +/* + * Exynos specific support for Samsung pinctrl/gpiolib driver with eint support. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2012 Linaro Ltd + * http://www.linaro.org + * + * Author: Thomas Abraham + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This file contains the Samsung Exynos specific information required by the + * the Samsung pinctrl/gpiolib driver. It also includes the implementation of + * external gpio and wakeup interrupt support. + */ + +#include +#include +#include +#include + +#include + +#include "pinctrl-samsung.h" +#include "pinctrl-exynos.h" + +/* list of external wakeup controllers supported */ +static const struct of_device_id exynos_wkup_irq_ids[] = { + { .compatible = "samsung,exynos4210-wakeup-eint", }, +}; + +static void exynos_gpio_irq_unmask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned long reg_mask = d->ctrl->geint_mask + edata->eint_offset; + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask &= ~(1 << edata->pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_gpio_irq_mask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned long reg_mask = d->ctrl->geint_mask + edata->eint_offset; + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask |= ~(1 << edata->pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_gpio_irq_ack(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned long reg_pend = d->ctrl->geint_pend + edata->eint_offset; + + writel(1 << edata->pin, d->virt_base + reg_pend); +} + +static int exynos_gpio_irq_set_type(struct irq_data *irqd, unsigned int type) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct samsung_pin_ctrl *ctrl = d->ctrl; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned int shift = EXYNOS_EINT_CON_LEN * edata->pin; + unsigned int con, trig_type; + unsigned long reg_con = ctrl->geint_con + edata->eint_offset; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + trig_type = EXYNOS_EINT_EDGE_RISING; + break; + case IRQ_TYPE_EDGE_FALLING: + trig_type = EXYNOS_EINT_EDGE_FALLING; + break; + case IRQ_TYPE_EDGE_BOTH: + trig_type = EXYNOS_EINT_EDGE_BOTH; + break; + case IRQ_TYPE_LEVEL_HIGH: + trig_type = EXYNOS_EINT_LEVEL_HIGH; + break; + case IRQ_TYPE_LEVEL_LOW: + trig_type = EXYNOS_EINT_LEVEL_LOW; + break; + default: + pr_err("unsupported external interrupt type\n"); + return -EINVAL; + } + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(irqd->irq, handle_edge_irq); + else + __irq_set_handler_locked(irqd->irq, handle_level_irq); + + con = readl(d->virt_base + reg_con); + con &= ~(EXYNOS_EINT_CON_MASK << shift); + con |= trig_type << shift; + writel(con, d->virt_base + reg_con); + return 0; +} + +/* + * irq_chip for gpio interrupts. + */ +static struct irq_chip exynos_gpio_irq_chip = { + .name = "exynos_gpio_irq_chip", + .irq_unmask = exynos_gpio_irq_unmask, + .irq_mask = exynos_gpio_irq_mask, + .irq_ack = exynos_gpio_irq_ack, + .irq_set_type = exynos_gpio_irq_set_type, +}; + +/* + * given a controller-local external gpio interrupt number, prepare the handler + * data for it. + */ +static struct exynos_geint_data *exynos_get_eint_data(irq_hw_number_t hw, + struct samsung_pinctrl_drv_data *d) +{ + struct samsung_pin_bank *bank = d->ctrl->pin_banks; + struct exynos_geint_data *eint_data; + unsigned int nr_banks = d->ctrl->nr_banks, idx; + unsigned int irq_base = 0, eint_offset = 0; + + if (hw >= d->ctrl->nr_gint) { + dev_err(d->dev, "unsupported ext-gpio interrupt\n"); + return NULL; + } + + for (idx = 0; idx < nr_banks; idx++, bank++) { + if (bank->eint_type != EINT_TYPE_GPIO) + continue; + if ((hw >= irq_base) && (hw < (irq_base + bank->nr_pins))) + break; + irq_base += bank->nr_pins; + eint_offset += 4; + } + + if (idx == nr_banks) { + dev_err(d->dev, "pin bank not found for ext-gpio interrupt\n"); + return NULL; + } + + eint_data = devm_kzalloc(d->dev, sizeof(*eint_data), GFP_KERNEL); + if (!eint_data) { + dev_err(d->dev, "no memory for eint-gpio data\n"); + return NULL; + } + + eint_data->bank = bank; + eint_data->pin = hw - irq_base; + eint_data->eint_offset = eint_offset; + return eint_data; +} + +static int exynos_gpio_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct samsung_pinctrl_drv_data *d = h->host_data; + struct exynos_geint_data *eint_data; + + eint_data = exynos_get_eint_data(hw, d); + if (!eint_data) + return -EINVAL; + + irq_set_handler_data(virq, eint_data); + irq_set_chip_data(virq, h->host_data); + irq_set_chip_and_handler(virq, &exynos_gpio_irq_chip, + handle_level_irq); + set_irq_flags(virq, IRQF_VALID); + return 0; +} + +static void exynos_gpio_irq_unmap(struct irq_domain *h, unsigned int virq) +{ + struct samsung_pinctrl_drv_data *d = h->host_data; + struct exynos_geint_data *eint_data; + + eint_data = irq_get_handler_data(virq); + devm_kfree(d->dev, eint_data); +} + +/* + * irq domain callbacks for external gpio interrupt controller. + */ +static const struct irq_domain_ops exynos_gpio_irqd_ops = { + .map = exynos_gpio_irq_map, + .unmap = exynos_gpio_irq_unmap, + .xlate = irq_domain_xlate_twocell, +}; + +static irqreturn_t exynos_eint_gpio_irq(int irq, void *data) +{ + struct samsung_pinctrl_drv_data *d = data; + struct samsung_pin_ctrl *ctrl = d->ctrl; + struct samsung_pin_bank *bank = ctrl->pin_banks; + unsigned int svc, group, pin, virq; + + svc = readl(d->virt_base + ctrl->svc); + group = EXYNOS_SVC_GROUP(svc); + pin = svc & EXYNOS_SVC_NUM_MASK; + + if (!group) + return IRQ_HANDLED; + bank += (group - 1); + + virq = irq_linear_revmap(d->gpio_irqd, bank->irq_base + pin); + if (!virq) + return IRQ_NONE; + generic_handle_irq(virq); + return IRQ_HANDLED; +} + +/* + * exynos_eint_gpio_init() - setup handling of external gpio interrupts. + * @d: driver data of samsung pinctrl driver. + */ +static int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d) +{ + struct device *dev = d->dev; + unsigned int ret; + + if (!d->irq) { + dev_err(dev, "irq number not available\n"); + return -EINVAL; + } + + ret = devm_request_irq(dev, d->irq, exynos_eint_gpio_irq, + 0, dev_name(dev), d); + if (ret) { + dev_err(dev, "irq request failed\n"); + return -ENXIO; + } + + d->gpio_irqd = irq_domain_add_linear(dev->of_node, d->ctrl->nr_gint, + &exynos_gpio_irqd_ops, d); + if (!d->gpio_irqd) { + dev_err(dev, "gpio irq domain allocation failed\n"); + return -ENXIO; + } + + return 0; +} + +static void exynos_wkup_irq_unmask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long reg_mask = d->ctrl->weint_mask + (bank << 2); + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask &= ~(1 << pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_wkup_irq_mask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long reg_mask = d->ctrl->weint_mask + (bank << 2); + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask &= ~(1 << pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_wkup_irq_ack(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long pend = d->ctrl->weint_pend + (bank << 2); + + writel(1 << pin, d->virt_base + pend); +} + +static int exynos_wkup_irq_set_type(struct irq_data *irqd, unsigned int type) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long reg_con = d->ctrl->weint_con + (bank << 2); + unsigned long shift = EXYNOS_EINT_CON_LEN * pin; + unsigned long con, trig_type; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + trig_type = EXYNOS_EINT_EDGE_RISING; + break; + case IRQ_TYPE_EDGE_FALLING: + trig_type = EXYNOS_EINT_EDGE_FALLING; + break; + case IRQ_TYPE_EDGE_BOTH: + trig_type = EXYNOS_EINT_EDGE_BOTH; + break; + case IRQ_TYPE_LEVEL_HIGH: + trig_type = EXYNOS_EINT_LEVEL_HIGH; + break; + case IRQ_TYPE_LEVEL_LOW: + trig_type = EXYNOS_EINT_LEVEL_LOW; + break; + default: + pr_err("unsupported external interrupt type\n"); + return -EINVAL; + } + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(irqd->irq, handle_edge_irq); + else + __irq_set_handler_locked(irqd->irq, handle_level_irq); + + con = readl(d->virt_base + reg_con); + con &= ~(EXYNOS_EINT_CON_MASK << shift); + con |= trig_type << shift; + writel(con, d->virt_base + reg_con); + return 0; +} + +/* + * irq_chip for wakeup interrupts + */ +static struct irq_chip exynos_wkup_irq_chip = { + .name = "exynos_wkup_irq_chip", + .irq_unmask = exynos_wkup_irq_unmask, + .irq_mask = exynos_wkup_irq_mask, + .irq_ack = exynos_wkup_irq_ack, + .irq_set_type = exynos_wkup_irq_set_type, +}; + +/* interrupt handler for wakeup interrupts 0..15 */ +static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc) +{ + struct exynos_weint_data *eintd = irq_get_handler_data(irq); + struct irq_chip *chip = irq_get_chip(irq); + int eint_irq; + + chained_irq_enter(chip, desc); + chip->irq_mask(&desc->irq_data); + + if (chip->irq_ack) + chip->irq_ack(&desc->irq_data); + + eint_irq = irq_linear_revmap(eintd->domain, eintd->irq); + generic_handle_irq(eint_irq); + chip->irq_unmask(&desc->irq_data); + chained_irq_exit(chip, desc); +} + +static void exynos_irq_demux_eint(int irq_base, unsigned long pend, + struct irq_domain *domain) +{ + unsigned int irq; + + while (pend) { + irq = fls(pend) - 1; + generic_handle_irq(irq_find_mapping(domain, irq_base + irq)); + pend &= ~(1 << irq); + } +} + +/* interrupt handler for wakeup interrupt 16 */ +static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc) +{ + struct irq_chip *chip = irq_get_chip(irq); + struct exynos_weint_data *eintd = irq_get_handler_data(irq); + struct samsung_pinctrl_drv_data *d = eintd->domain->host_data; + unsigned long pend; + + chained_irq_enter(chip, desc); + pend = readl(d->virt_base + d->ctrl->weint_pend + 0x8); + exynos_irq_demux_eint(16, pend, eintd->domain); + pend = readl(d->virt_base + d->ctrl->weint_pend + 0xC); + exynos_irq_demux_eint(24, pend, eintd->domain); + chained_irq_exit(chip, desc); +} + +static int exynos_wkup_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + irq_set_chip_and_handler(virq, &exynos_wkup_irq_chip, handle_level_irq); + irq_set_chip_data(virq, h->host_data); + set_irq_flags(virq, IRQF_VALID); + return 0; +} + +/* + * irq domain callbacks for external wakeup interrupt controller. + */ +static const struct irq_domain_ops exynos_wkup_irqd_ops = { + .map = exynos_wkup_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + +/* + * exynos_eint_wkup_init() - setup handling of external wakeup interrupts. + * @d: driver data of samsung pinctrl driver. + */ +static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) +{ + struct device *dev = d->dev; + struct device_node *wkup_np; + struct exynos_weint_data *weint_data; + int idx, irq; + + wkup_np = of_find_matching_node(dev->of_node, exynos_wkup_irq_ids); + if (!wkup_np) { + dev_err(dev, "wakeup controller node not found\n"); + return -ENODEV; + } + + d->wkup_irqd = irq_domain_add_linear(wkup_np, d->ctrl->nr_wint, + &exynos_wkup_irqd_ops, d); + if (!d->gpio_irqd) { + dev_err(dev, "wakeup irq domain allocation failed\n"); + return -ENXIO; + } + + weint_data = devm_kzalloc(dev, sizeof(*weint_data) * 17, GFP_KERNEL); + if (!weint_data) { + dev_err(dev, "could not allocate memory for weint_data\n"); + return -ENOMEM; + } + + irq = irq_of_parse_and_map(wkup_np, 16); + if (irq) { + weint_data[16].domain = d->wkup_irqd; + irq_set_chained_handler(irq, exynos_irq_demux_eint16_31); + irq_set_handler_data(irq, &weint_data[16]); + } else { + dev_err(dev, "irq number for EINT16-32 not found\n"); + } + + for (idx = 0; idx < 16; idx++) { + weint_data[idx].domain = d->wkup_irqd; + weint_data[idx].irq = idx; + + irq = irq_of_parse_and_map(wkup_np, idx); + if (irq) { + irq_set_handler_data(irq, &weint_data[idx]); + irq_set_chained_handler(irq, exynos_irq_eint0_15); + } else { + dev_err(dev, "irq number for eint-%x not found\n", idx); + } + } + return 0; +} + +/* pin banks of exynos4210 pin-controller 0 */ +static struct samsung_pin_bank exynos4210_pin_banks0[] = { + EXYNOS_PIN_BANK_EINTG(0x000, EXYNOS4210_GPIO_A0, "gpa0"), + EXYNOS_PIN_BANK_EINTG(0x020, EXYNOS4210_GPIO_A1, "gpa1"), + EXYNOS_PIN_BANK_EINTG(0x040, EXYNOS4210_GPIO_B, "gpb"), + EXYNOS_PIN_BANK_EINTG(0x060, EXYNOS4210_GPIO_C0, "gpc0"), + EXYNOS_PIN_BANK_EINTG(0x080, EXYNOS4210_GPIO_C1, "gpc1"), + EXYNOS_PIN_BANK_EINTG(0x0A0, EXYNOS4210_GPIO_D0, "gpd0"), + EXYNOS_PIN_BANK_EINTG(0x0C0, EXYNOS4210_GPIO_D1, "gpd1"), + EXYNOS_PIN_BANK_EINTG(0x0E0, EXYNOS4210_GPIO_E0, "gpe0"), + EXYNOS_PIN_BANK_EINTG(0x100, EXYNOS4210_GPIO_E1, "gpe1"), + EXYNOS_PIN_BANK_EINTG(0x120, EXYNOS4210_GPIO_E2, "gpe2"), + EXYNOS_PIN_BANK_EINTG(0x140, EXYNOS4210_GPIO_E3, "gpe3"), + EXYNOS_PIN_BANK_EINTG(0x160, EXYNOS4210_GPIO_E4, "gpe4"), + EXYNOS_PIN_BANK_EINTG(0x180, EXYNOS4210_GPIO_F0, "gpf0"), + EXYNOS_PIN_BANK_EINTG(0x1A0, EXYNOS4210_GPIO_F1, "gpf1"), + EXYNOS_PIN_BANK_EINTG(0x1C0, EXYNOS4210_GPIO_F2, "gpf2"), + EXYNOS_PIN_BANK_EINTG(0x1E0, EXYNOS4210_GPIO_F3, "gpf3"), +}; + +/* pin banks of exynos4210 pin-controller 1 */ +static struct samsung_pin_bank exynos4210_pin_banks1[] = { + EXYNOS_PIN_BANK_EINTG(0x000, EXYNOS4210_GPIO_J0, "gpj0"), + EXYNOS_PIN_BANK_EINTG(0x020, EXYNOS4210_GPIO_J1, "gpj1"), + EXYNOS_PIN_BANK_EINTG(0x040, EXYNOS4210_GPIO_K0, "gpk0"), + EXYNOS_PIN_BANK_EINTG(0x060, EXYNOS4210_GPIO_K1, "gpk1"), + EXYNOS_PIN_BANK_EINTG(0x080, EXYNOS4210_GPIO_K2, "gpk2"), + EXYNOS_PIN_BANK_EINTG(0x0A0, EXYNOS4210_GPIO_K3, "gpk3"), + EXYNOS_PIN_BANK_EINTG(0x0C0, EXYNOS4210_GPIO_L0, "gpl0"), + EXYNOS_PIN_BANK_EINTG(0x0E0, EXYNOS4210_GPIO_L1, "gpl1"), + EXYNOS_PIN_BANK_EINTG(0x100, EXYNOS4210_GPIO_L2, "gpl2"), + EXYNOS_PIN_BANK_EINTN(0x120, EXYNOS4210_GPIO_Y0, "gpy0"), + EXYNOS_PIN_BANK_EINTN(0x140, EXYNOS4210_GPIO_Y1, "gpy1"), + EXYNOS_PIN_BANK_EINTN(0x160, EXYNOS4210_GPIO_Y2, "gpy2"), + EXYNOS_PIN_BANK_EINTN(0x180, EXYNOS4210_GPIO_Y3, "gpy3"), + EXYNOS_PIN_BANK_EINTN(0x1A0, EXYNOS4210_GPIO_Y4, "gpy4"), + EXYNOS_PIN_BANK_EINTN(0x1C0, EXYNOS4210_GPIO_Y5, "gpy5"), + EXYNOS_PIN_BANK_EINTN(0x1E0, EXYNOS4210_GPIO_Y6, "gpy6"), + EXYNOS_PIN_BANK_EINTN(0xC00, EXYNOS4210_GPIO_X0, "gpx0"), + EXYNOS_PIN_BANK_EINTN(0xC20, EXYNOS4210_GPIO_X1, "gpx1"), + EXYNOS_PIN_BANK_EINTN(0xC40, EXYNOS4210_GPIO_X2, "gpx2"), + EXYNOS_PIN_BANK_EINTN(0xC60, EXYNOS4210_GPIO_X3, "gpx3"), +}; + +/* pin banks of exynos4210 pin-controller 2 */ +static struct samsung_pin_bank exynos4210_pin_banks2[] = { + EXYNOS_PIN_BANK_EINTN(0x000, EXYNOS4210_GPIO_Z, "gpz"), +}; + +/* + * Samsung pinctrl driver data for Exynos4210 SoC. Exynos4210 SoC includes + * three gpio/pin-mux/pinconfig controllers. + */ +struct samsung_pin_ctrl exynos4210_pin_ctrl[] = { + { + /* pin-controller instance 0 data */ + .pin_banks = exynos4210_pin_banks0, + .nr_banks = ARRAY_SIZE(exynos4210_pin_banks0), + .base = EXYNOS4210_GPIO_A0_START, + .nr_pins = EXYNOS4210_GPIOA_NR_PINS, + .nr_gint = EXYNOS4210_GPIOA_NR_GINT, + .geint_con = EXYNOS_GPIO_ECON_OFFSET, + .geint_mask = EXYNOS_GPIO_EMASK_OFFSET, + .geint_pend = EXYNOS_GPIO_EPEND_OFFSET, + .svc = EXYNOS_SVC_OFFSET, + .eint_gpio_init = exynos_eint_gpio_init, + .label = "exynos4210-gpio-ctrl0", + }, { + /* pin-controller instance 1 data */ + .pin_banks = exynos4210_pin_banks1, + .nr_banks = ARRAY_SIZE(exynos4210_pin_banks1), + .base = EXYNOS4210_GPIOA_NR_PINS, + .nr_pins = EXYNOS4210_GPIOB_NR_PINS, + .nr_gint = EXYNOS4210_GPIOB_NR_GINT, + .nr_wint = 32, + .geint_con = EXYNOS_GPIO_ECON_OFFSET, + .geint_mask = EXYNOS_GPIO_EMASK_OFFSET, + .geint_pend = EXYNOS_GPIO_EPEND_OFFSET, + .weint_con = EXYNOS_WKUP_ECON_OFFSET, + .weint_mask = EXYNOS_WKUP_EMASK_OFFSET, + .weint_pend = EXYNOS_WKUP_EPEND_OFFSET, + .svc = EXYNOS_SVC_OFFSET, + .eint_gpio_init = exynos_eint_gpio_init, + .eint_wkup_init = exynos_eint_wkup_init, + .label = "exynos4210-gpio-ctrl1", + }, { + /* pin-controller instance 2 data */ + .pin_banks = exynos4210_pin_banks2, + .nr_banks = ARRAY_SIZE(exynos4210_pin_banks2), + .base = EXYNOS4210_GPIOA_NR_PINS + + EXYNOS4210_GPIOB_NR_PINS, + .nr_pins = EXYNOS4210_GPIOC_NR_PINS, + .label = "exynos4210-gpio-ctrl2", + }, +}; diff --git a/drivers/pinctrl/pinctrl-exynos.h b/drivers/pinctrl/pinctrl-exynos.h new file mode 100644 index 0000000..e24267f --- /dev/null +++ b/drivers/pinctrl/pinctrl-exynos.h @@ -0,0 +1,213 @@ +/* + * Exynos specific definitions for Samsung pinctrl and gpiolib driver. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2012 Linaro Ltd + * http://www.linaro.org + * + * This file contains the Exynos specific definitions for the Samsung + * pinctrl/gpiolib interface drivers. + * + * Author: Thomas Abraham + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#define EXYNOS_GPIO_START(__gpio) ((__gpio##_START) + (__gpio##_NR)) + +#define EXYNOS4210_GPIO_A0_NR (8) +#define EXYNOS4210_GPIO_A1_NR (6) +#define EXYNOS4210_GPIO_B_NR (8) +#define EXYNOS4210_GPIO_C0_NR (5) +#define EXYNOS4210_GPIO_C1_NR (5) +#define EXYNOS4210_GPIO_D0_NR (4) +#define EXYNOS4210_GPIO_D1_NR (4) +#define EXYNOS4210_GPIO_E0_NR (5) +#define EXYNOS4210_GPIO_E1_NR (8) +#define EXYNOS4210_GPIO_E2_NR (6) +#define EXYNOS4210_GPIO_E3_NR (8) +#define EXYNOS4210_GPIO_E4_NR (8) +#define EXYNOS4210_GPIO_F0_NR (8) +#define EXYNOS4210_GPIO_F1_NR (8) +#define EXYNOS4210_GPIO_F2_NR (8) +#define EXYNOS4210_GPIO_F3_NR (6) +#define EXYNOS4210_GPIO_J0_NR (8) +#define EXYNOS4210_GPIO_J1_NR (5) +#define EXYNOS4210_GPIO_K0_NR (7) +#define EXYNOS4210_GPIO_K1_NR (7) +#define EXYNOS4210_GPIO_K2_NR (7) +#define EXYNOS4210_GPIO_K3_NR (7) +#define EXYNOS4210_GPIO_L0_NR (8) +#define EXYNOS4210_GPIO_L1_NR (3) +#define EXYNOS4210_GPIO_L2_NR (8) +#define EXYNOS4210_GPIO_Y0_NR (6) +#define EXYNOS4210_GPIO_Y1_NR (4) +#define EXYNOS4210_GPIO_Y2_NR (6) +#define EXYNOS4210_GPIO_Y3_NR (8) +#define EXYNOS4210_GPIO_Y4_NR (8) +#define EXYNOS4210_GPIO_Y5_NR (8) +#define EXYNOS4210_GPIO_Y6_NR (8) +#define EXYNOS4210_GPIO_X0_NR (8) +#define EXYNOS4210_GPIO_X1_NR (8) +#define EXYNOS4210_GPIO_X2_NR (8) +#define EXYNOS4210_GPIO_X3_NR (8) +#define EXYNOS4210_GPIO_Z_NR (7) + +enum exynos4210_gpio_xa_start { + EXYNOS4210_GPIO_A0_START = 0, + EXYNOS4210_GPIO_A1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_A0), + EXYNOS4210_GPIO_B_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_A1), + EXYNOS4210_GPIO_C0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_B), + EXYNOS4210_GPIO_C1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_C0), + EXYNOS4210_GPIO_D0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_C1), + EXYNOS4210_GPIO_D1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_D0), + EXYNOS4210_GPIO_E0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_D1), + EXYNOS4210_GPIO_E1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E0), + EXYNOS4210_GPIO_E2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E1), + EXYNOS4210_GPIO_E3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E2), + EXYNOS4210_GPIO_E4_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E3), + EXYNOS4210_GPIO_F0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E4), + EXYNOS4210_GPIO_F1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_F0), + EXYNOS4210_GPIO_F2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_F1), + EXYNOS4210_GPIO_F3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_F2), +}; + +enum exynos4210_gpio_xb_start { + EXYNOS4210_GPIO_J0_START = 0, + EXYNOS4210_GPIO_J1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_J0), + EXYNOS4210_GPIO_K0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_J1), + EXYNOS4210_GPIO_K1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K0), + EXYNOS4210_GPIO_K2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K1), + EXYNOS4210_GPIO_K3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K2), + EXYNOS4210_GPIO_L0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K3), + EXYNOS4210_GPIO_L1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_L0), + EXYNOS4210_GPIO_L2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_L1), + EXYNOS4210_GPIO_Y0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_L2), + EXYNOS4210_GPIO_Y1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y0), + EXYNOS4210_GPIO_Y2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y1), + EXYNOS4210_GPIO_Y3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y2), + EXYNOS4210_GPIO_Y4_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y3), + EXYNOS4210_GPIO_Y5_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y4), + EXYNOS4210_GPIO_Y6_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y5), + EXYNOS4210_GPIO_X0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y6), + EXYNOS4210_GPIO_X1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_X0), + EXYNOS4210_GPIO_X2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_X1), + EXYNOS4210_GPIO_X3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_X2), +}; + +enum exynos4210_gpio_xc_start { + EXYNOS4210_GPIO_Z_START = 0, +}; + +#define EXYNOS4210_GPIO_A0_IRQ EXYNOS4210_GPIO_A0_START +#define EXYNOS4210_GPIO_A1_IRQ EXYNOS4210_GPIO_A1_START +#define EXYNOS4210_GPIO_B_IRQ EXYNOS4210_GPIO_B_START +#define EXYNOS4210_GPIO_C0_IRQ EXYNOS4210_GPIO_C0_START +#define EXYNOS4210_GPIO_C1_IRQ EXYNOS4210_GPIO_C1_START +#define EXYNOS4210_GPIO_D0_IRQ EXYNOS4210_GPIO_D0_START +#define EXYNOS4210_GPIO_D1_IRQ EXYNOS4210_GPIO_D1_START +#define EXYNOS4210_GPIO_E0_IRQ EXYNOS4210_GPIO_E0_START +#define EXYNOS4210_GPIO_E1_IRQ EXYNOS4210_GPIO_E1_START +#define EXYNOS4210_GPIO_E2_IRQ EXYNOS4210_GPIO_E2_START +#define EXYNOS4210_GPIO_E3_IRQ EXYNOS4210_GPIO_E3_START +#define EXYNOS4210_GPIO_E4_IRQ EXYNOS4210_GPIO_E4_START +#define EXYNOS4210_GPIO_F0_IRQ EXYNOS4210_GPIO_F0_START +#define EXYNOS4210_GPIO_F1_IRQ EXYNOS4210_GPIO_F1_START +#define EXYNOS4210_GPIO_F2_IRQ EXYNOS4210_GPIO_F2_START +#define EXYNOS4210_GPIO_F3_IRQ EXYNOS4210_GPIO_F3_START +#define EXYNOS4210_GPIO_J0_IRQ EXYNOS4210_GPIO_J0_START +#define EXYNOS4210_GPIO_J1_IRQ EXYNOS4210_GPIO_J1_START +#define EXYNOS4210_GPIO_K0_IRQ EXYNOS4210_GPIO_K0_START +#define EXYNOS4210_GPIO_K1_IRQ EXYNOS4210_GPIO_K1_START +#define EXYNOS4210_GPIO_K2_IRQ EXYNOS4210_GPIO_K2_START +#define EXYNOS4210_GPIO_K3_IRQ EXYNOS4210_GPIO_K3_START +#define EXYNOS4210_GPIO_L0_IRQ EXYNOS4210_GPIO_L0_START +#define EXYNOS4210_GPIO_L1_IRQ EXYNOS4210_GPIO_L1_START +#define EXYNOS4210_GPIO_L2_IRQ EXYNOS4210_GPIO_L2_START +#define EXYNOS4210_GPIO_Z_IRQ EXYNOS4210_GPIO_Z_START + +#define EXYNOS4210_GPIOA_NR_PINS EXYNOS_GPIO_START(EXYNOS4210_GPIO_F3) +#define EXYNOS4210_GPIOA_NR_GINT EXYNOS_GPIO_START(EXYNOS4210_GPIO_F3) +#define EXYNOS4210_GPIOB_NR_PINS EXYNOS_GPIO_START(EXYNOS4210_GPIO_X3) +#define EXYNOS4210_GPIOB_NR_GINT EXYNOS_GPIO_START(EXYNOS4210_GPIO_L2) +#define EXYNOS4210_GPIOC_NR_PINS EXYNOS_GPIO_START(EXYNOS4210_GPIO_Z) + +/* External GPIO and wakeup interrupt related definitions */ +#define EXYNOS_GPIO_ECON_OFFSET 0x700 +#define EXYNOS_GPIO_EMASK_OFFSET 0x900 +#define EXYNOS_GPIO_EPEND_OFFSET 0xA00 +#define EXYNOS_WKUP_ECON_OFFSET 0xE00 +#define EXYNOS_WKUP_EMASK_OFFSET 0xF00 +#define EXYNOS_WKUP_EPEND_OFFSET 0xF40 +#define EXYNOS_SVC_OFFSET 0xB08 + +/* helpers to access interrupt service register */ +#define EXYNOS_SVC_GROUP_SHIFT 3 +#define EXYNOS_SVC_GROUP_MASK 0x1f +#define EXYNOS_SVC_NUM_MASK 7 +#define EXYNOS_SVC_GROUP(x) ((x >> EXYNOS_SVC_GROUP_SHIFT) & \ + EXYNOS_SVC_GROUP_MASK) + +/* Exynos specific external interrupt trigger types */ +#define EXYNOS_EINT_LEVEL_LOW 0 +#define EXYNOS_EINT_LEVEL_HIGH 1 +#define EXYNOS_EINT_EDGE_FALLING 2 +#define EXYNOS_EINT_EDGE_RISING 3 +#define EXYNOS_EINT_EDGE_BOTH 4 +#define EXYNOS_EINT_CON_MASK 0xF +#define EXYNOS_EINT_CON_LEN 4 + +#define EXYNOS_EINT_MAX_PER_BANK 8 +#define EXYNOS_EINT_NR_WKUP_EINT + +#define EXYNOS_PIN_BANK_EINTN(reg, __gpio, id) \ + { \ + .pctl_offset = reg, \ + .pin_base = (__gpio##_START), \ + .nr_pins = (__gpio##_NR), \ + .func_width = 4, \ + .pud_width = 2, \ + .drv_width = 2, \ + .eint_type = EINT_TYPE_NONE, \ + .name = id \ + } + +#define EXYNOS_PIN_BANK_EINTG(reg, __gpio, id) \ + { \ + .pctl_offset = reg, \ + .pin_base = (__gpio##_START), \ + .nr_pins = (__gpio##_NR), \ + .func_width = 4, \ + .pud_width = 2, \ + .drv_width = 2, \ + .eint_type = EINT_TYPE_GPIO, \ + .irq_base = (__gpio##_IRQ), \ + .name = id \ + } + +/** + * struct exynos_geint_data: gpio eint specific data for irq_chip callbacks. + * @bank: pin bank from which this gpio interrupt originates. + * @pin: pin number within the bank. + * @eint_offset: offset to be added to the con/pend/mask register bank base. + */ +struct exynos_geint_data { + struct samsung_pin_bank *bank; + unsigned int pin; + unsigned int eint_offset; +}; + +/** + * struct exynos_weint_data: irq specific data for all the wakeup interrupts + * generated by the external wakeup interrupt controller. + * @domain: irq domain representing the external wakeup interrupts + * @irq: interrupt number within the domain. + */ +struct exynos_weint_data { + struct irq_domain *domain; + unsigned int irq; +};