diff options
Diffstat (limited to 'kernel/drivers/pinctrl/intel')
| -rw-r--r-- | kernel/drivers/pinctrl/intel/Kconfig | 44 | ||||
| -rw-r--r-- | kernel/drivers/pinctrl/intel/Makefile | 6 | ||||
| -rw-r--r-- | kernel/drivers/pinctrl/intel/pinctrl-baytrail.c | 746 | ||||
| -rw-r--r-- | kernel/drivers/pinctrl/intel/pinctrl-cherryview.c | 1680 | ||||
| -rw-r--r-- | kernel/drivers/pinctrl/intel/pinctrl-intel.c | 1149 | ||||
| -rw-r--r-- | kernel/drivers/pinctrl/intel/pinctrl-intel.h | 128 | ||||
| -rw-r--r-- | kernel/drivers/pinctrl/intel/pinctrl-sunrisepoint.c | 336 |
7 files changed, 4089 insertions, 0 deletions
diff --git a/kernel/drivers/pinctrl/intel/Kconfig b/kernel/drivers/pinctrl/intel/Kconfig new file mode 100644 index 000000000..fe5e07db0 --- /dev/null +++ b/kernel/drivers/pinctrl/intel/Kconfig @@ -0,0 +1,44 @@ +# +# Intel pin control drivers +# + +config PINCTRL_BAYTRAIL + bool "Intel Baytrail GPIO pin control" + depends on GPIOLIB && ACPI + select GPIOLIB_IRQCHIP + help + driver for memory mapped GPIO functionality on Intel Baytrail + platforms. Supports 3 banks with 102, 28 and 44 gpios. + Most pins are usually muxed to some other functionality by firmware, + so only a small amount is available for gpio use. + + Requires ACPI device enumeration code to set up a platform device. + +config PINCTRL_CHERRYVIEW + tristate "Intel Cherryview/Braswell pinctrl and GPIO driver" + depends on ACPI + select PINMUX + select PINCONF + select GENERIC_PINCONF + select GPIOLIB + select GPIOLIB_IRQCHIP + help + Cherryview/Braswell pinctrl driver provides an interface that + allows configuring of SoC pins and using them as GPIOs. + +config PINCTRL_INTEL + tristate + select PINMUX + select PINCONF + select GENERIC_PINCONF + select GPIOLIB + select GPIOLIB_IRQCHIP + +config PINCTRL_SUNRISEPOINT + tristate "Intel Sunrisepoint pinctrl and GPIO driver" + depends on ACPI + select PINCTRL_INTEL + help + Sunrisepoint is the PCH of Intel Skylake. This pinctrl driver + provides an interface that allows configuring of PCH pins and + using them as GPIOs. diff --git a/kernel/drivers/pinctrl/intel/Makefile b/kernel/drivers/pinctrl/intel/Makefile new file mode 100644 index 000000000..fee756e12 --- /dev/null +++ b/kernel/drivers/pinctrl/intel/Makefile @@ -0,0 +1,6 @@ +# Intel pin control drivers + +obj-$(CONFIG_PINCTRL_BAYTRAIL) += pinctrl-baytrail.o +obj-$(CONFIG_PINCTRL_CHERRYVIEW) += pinctrl-cherryview.o +obj-$(CONFIG_PINCTRL_INTEL) += pinctrl-intel.o +obj-$(CONFIG_PINCTRL_SUNRISEPOINT) += pinctrl-sunrisepoint.o diff --git a/kernel/drivers/pinctrl/intel/pinctrl-baytrail.c b/kernel/drivers/pinctrl/intel/pinctrl-baytrail.c new file mode 100644 index 000000000..2062c224e --- /dev/null +++ b/kernel/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -0,0 +1,746 @@ +/* + * Pinctrl GPIO driver for Intel Baytrail + * Copyright (c) 2012-2013, Intel Corporation. + * + * Author: Mathias Nyman <mathias.nyman@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/bitops.h> +#include <linux/interrupt.h> +#include <linux/gpio.h> +#include <linux/acpi.h> +#include <linux/platform_device.h> +#include <linux/seq_file.h> +#include <linux/io.h> +#include <linux/pm_runtime.h> +#include <linux/pinctrl/pinctrl.h> + +/* memory mapped register offsets */ +#define BYT_CONF0_REG 0x000 +#define BYT_CONF1_REG 0x004 +#define BYT_VAL_REG 0x008 +#define BYT_DFT_REG 0x00c +#define BYT_INT_STAT_REG 0x800 + +/* BYT_CONF0_REG register bits */ +#define BYT_IODEN BIT(31) +#define BYT_DIRECT_IRQ_EN BIT(27) +#define BYT_TRIG_NEG BIT(26) +#define BYT_TRIG_POS BIT(25) +#define BYT_TRIG_LVL BIT(24) +#define BYT_PULL_STR_SHIFT 9 +#define BYT_PULL_STR_MASK (3 << BYT_PULL_STR_SHIFT) +#define BYT_PULL_STR_2K (0 << BYT_PULL_STR_SHIFT) +#define BYT_PULL_STR_10K (1 << BYT_PULL_STR_SHIFT) +#define BYT_PULL_STR_20K (2 << BYT_PULL_STR_SHIFT) +#define BYT_PULL_STR_40K (3 << BYT_PULL_STR_SHIFT) +#define BYT_PULL_ASSIGN_SHIFT 7 +#define BYT_PULL_ASSIGN_MASK (3 << BYT_PULL_ASSIGN_SHIFT) +#define BYT_PULL_ASSIGN_UP (1 << BYT_PULL_ASSIGN_SHIFT) +#define BYT_PULL_ASSIGN_DOWN (2 << BYT_PULL_ASSIGN_SHIFT) +#define BYT_PIN_MUX 0x07 + +/* BYT_VAL_REG register bits */ +#define BYT_INPUT_EN BIT(2) /* 0: input enabled (active low)*/ +#define BYT_OUTPUT_EN BIT(1) /* 0: output enabled (active low)*/ +#define BYT_LEVEL BIT(0) + +#define BYT_DIR_MASK (BIT(1) | BIT(2)) +#define BYT_TRIG_MASK (BIT(26) | BIT(25) | BIT(24)) + +#define BYT_CONF0_RESTORE_MASK (BYT_DIRECT_IRQ_EN | BYT_TRIG_MASK | \ + BYT_PIN_MUX) +#define BYT_VAL_RESTORE_MASK (BYT_DIR_MASK | BYT_LEVEL) + +#define BYT_NGPIO_SCORE 102 +#define BYT_NGPIO_NCORE 28 +#define BYT_NGPIO_SUS 44 + +#define BYT_SCORE_ACPI_UID "1" +#define BYT_NCORE_ACPI_UID "2" +#define BYT_SUS_ACPI_UID "3" + +/* + * Baytrail gpio controller consist of three separate sub-controllers called + * SCORE, NCORE and SUS. The sub-controllers are identified by their acpi UID. + * + * GPIO numbering is _not_ ordered meaning that gpio # 0 in ACPI namespace does + * _not_ correspond to the first gpio register at controller's gpio base. + * There is no logic or pattern in mapping gpio numbers to registers (pads) so + * each sub-controller needs to have its own mapping table + */ + +/* score_pins[gpio_nr] = pad_nr */ + +static unsigned const score_pins[BYT_NGPIO_SCORE] = { + 85, 89, 93, 96, 99, 102, 98, 101, 34, 37, + 36, 38, 39, 35, 40, 84, 62, 61, 64, 59, + 54, 56, 60, 55, 63, 57, 51, 50, 53, 47, + 52, 49, 48, 43, 46, 41, 45, 42, 58, 44, + 95, 105, 70, 68, 67, 66, 69, 71, 65, 72, + 86, 90, 88, 92, 103, 77, 79, 83, 78, 81, + 80, 82, 13, 12, 15, 14, 17, 18, 19, 16, + 2, 1, 0, 4, 6, 7, 9, 8, 33, 32, + 31, 30, 29, 27, 25, 28, 26, 23, 21, 20, + 24, 22, 5, 3, 10, 11, 106, 87, 91, 104, + 97, 100, +}; + +static unsigned const ncore_pins[BYT_NGPIO_NCORE] = { + 19, 18, 17, 20, 21, 22, 24, 25, 23, 16, + 14, 15, 12, 26, 27, 1, 4, 8, 11, 0, + 3, 6, 10, 13, 2, 5, 9, 7, +}; + +static unsigned const sus_pins[BYT_NGPIO_SUS] = { + 29, 33, 30, 31, 32, 34, 36, 35, 38, 37, + 18, 7, 11, 20, 17, 1, 8, 10, 19, 12, + 0, 2, 23, 39, 28, 27, 22, 21, 24, 25, + 26, 51, 56, 54, 49, 55, 48, 57, 50, 58, + 52, 53, 59, 40, +}; + +static struct pinctrl_gpio_range byt_ranges[] = { + { + .name = BYT_SCORE_ACPI_UID, /* match with acpi _UID in probe */ + .npins = BYT_NGPIO_SCORE, + .pins = score_pins, + }, + { + .name = BYT_NCORE_ACPI_UID, + .npins = BYT_NGPIO_NCORE, + .pins = ncore_pins, + }, + { + .name = BYT_SUS_ACPI_UID, + .npins = BYT_NGPIO_SUS, + .pins = sus_pins, + }, + { + }, +}; + +struct byt_gpio_pin_context { + u32 conf0; + u32 val; +}; + +struct byt_gpio { + struct gpio_chip chip; + struct platform_device *pdev; + spinlock_t lock; + void __iomem *reg_base; + struct pinctrl_gpio_range *range; + struct byt_gpio_pin_context *saved_context; +}; + +#define to_byt_gpio(c) container_of(c, struct byt_gpio, chip) + +static void __iomem *byt_gpio_reg(struct gpio_chip *chip, unsigned offset, + int reg) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + u32 reg_offset; + + if (reg == BYT_INT_STAT_REG) + reg_offset = (offset / 32) * 4; + else + reg_offset = vg->range->pins[offset] * 16; + + return vg->reg_base + reg_offset + reg; +} + +static void byt_gpio_clear_triggering(struct byt_gpio *vg, unsigned offset) +{ + void __iomem *reg = byt_gpio_reg(&vg->chip, offset, BYT_CONF0_REG); + unsigned long flags; + u32 value; + + spin_lock_irqsave(&vg->lock, flags); + value = readl(reg); + value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); + writel(value, reg); + spin_unlock_irqrestore(&vg->lock, flags); +} + +static u32 byt_get_gpio_mux(struct byt_gpio *vg, unsigned offset) +{ + /* SCORE pin 92-93 */ + if (!strcmp(vg->range->name, BYT_SCORE_ACPI_UID) && + offset >= 92 && offset <= 93) + return 1; + + /* SUS pin 11-21 */ + if (!strcmp(vg->range->name, BYT_SUS_ACPI_UID) && + offset >= 11 && offset <= 21) + return 1; + + return 0; +} + +static int byt_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + void __iomem *reg = byt_gpio_reg(chip, offset, BYT_CONF0_REG); + u32 value, gpio_mux; + + /* + * In most cases, func pin mux 000 means GPIO function. + * But, some pins may have func pin mux 001 represents + * GPIO function. + * + * Because there are devices out there where some pins were not + * configured correctly we allow changing the mux value from + * request (but print out warning about that). + */ + value = readl(reg) & BYT_PIN_MUX; + gpio_mux = byt_get_gpio_mux(vg, offset); + if (WARN_ON(gpio_mux != value)) { + unsigned long flags; + + spin_lock_irqsave(&vg->lock, flags); + value = readl(reg) & ~BYT_PIN_MUX; + value |= gpio_mux; + writel(value, reg); + spin_unlock_irqrestore(&vg->lock, flags); + + dev_warn(&vg->pdev->dev, + "pin %u forcibly re-configured as GPIO\n", offset); + } + + pm_runtime_get(&vg->pdev->dev); + + return 0; +} + +static void byt_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + + byt_gpio_clear_triggering(vg, offset); + pm_runtime_put(&vg->pdev->dev); +} + +static int byt_irq_type(struct irq_data *d, unsigned type) +{ + struct byt_gpio *vg = to_byt_gpio(irq_data_get_irq_chip_data(d)); + u32 offset = irqd_to_hwirq(d); + u32 value; + unsigned long flags; + void __iomem *reg = byt_gpio_reg(&vg->chip, offset, BYT_CONF0_REG); + + if (offset >= vg->chip.ngpio) + return -EINVAL; + + spin_lock_irqsave(&vg->lock, flags); + value = readl(reg); + + WARN(value & BYT_DIRECT_IRQ_EN, + "Bad pad config for io mode, force direct_irq_en bit clearing"); + + /* For level trigges the BYT_TRIG_POS and BYT_TRIG_NEG bits + * are used to indicate high and low level triggering + */ + value &= ~(BYT_DIRECT_IRQ_EN | BYT_TRIG_POS | BYT_TRIG_NEG | + BYT_TRIG_LVL); + + writel(value, reg); + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(d->irq, handle_edge_irq); + else if (type & IRQ_TYPE_LEVEL_MASK) + __irq_set_handler_locked(d->irq, handle_level_irq); + + spin_unlock_irqrestore(&vg->lock, flags); + + return 0; +} + +static int byt_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + void __iomem *reg = byt_gpio_reg(chip, offset, BYT_VAL_REG); + return readl(reg) & BYT_LEVEL; +} + +static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + void __iomem *reg = byt_gpio_reg(chip, offset, BYT_VAL_REG); + unsigned long flags; + u32 old_val; + + spin_lock_irqsave(&vg->lock, flags); + + old_val = readl(reg); + + if (value) + writel(old_val | BYT_LEVEL, reg); + else + writel(old_val & ~BYT_LEVEL, reg); + + spin_unlock_irqrestore(&vg->lock, flags); +} + +static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + void __iomem *reg = byt_gpio_reg(chip, offset, BYT_VAL_REG); + unsigned long flags; + u32 value; + + spin_lock_irqsave(&vg->lock, flags); + + value = readl(reg) | BYT_DIR_MASK; + value &= ~BYT_INPUT_EN; /* active low */ + writel(value, reg); + + spin_unlock_irqrestore(&vg->lock, flags); + + return 0; +} + +static int byt_gpio_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + void __iomem *conf_reg = byt_gpio_reg(chip, gpio, BYT_CONF0_REG); + void __iomem *reg = byt_gpio_reg(chip, gpio, BYT_VAL_REG); + unsigned long flags; + u32 reg_val; + + spin_lock_irqsave(&vg->lock, flags); + + /* + * Before making any direction modifications, do a check if gpio + * is set for direct IRQ. On baytrail, setting GPIO to output does + * not make sense, so let's at least warn the caller before they shoot + * themselves in the foot. + */ + WARN(readl(conf_reg) & BYT_DIRECT_IRQ_EN, + "Potential Error: Setting GPIO with direct_irq_en to output"); + + reg_val = readl(reg) | BYT_DIR_MASK; + reg_val &= ~(BYT_OUTPUT_EN | BYT_INPUT_EN); + + if (value) + writel(reg_val | BYT_LEVEL, reg); + else + writel(reg_val & ~BYT_LEVEL, reg); + + spin_unlock_irqrestore(&vg->lock, flags); + + return 0; +} + +static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) +{ + struct byt_gpio *vg = to_byt_gpio(chip); + int i; + unsigned long flags; + u32 conf0, val, offs; + + spin_lock_irqsave(&vg->lock, flags); + + for (i = 0; i < vg->chip.ngpio; i++) { + const char *pull_str = NULL; + const char *pull = NULL; + const char *label; + offs = vg->range->pins[i] * 16; + conf0 = readl(vg->reg_base + offs + BYT_CONF0_REG); + val = readl(vg->reg_base + offs + BYT_VAL_REG); + + label = gpiochip_is_requested(chip, i); + if (!label) + label = "Unrequested"; + + switch (conf0 & BYT_PULL_ASSIGN_MASK) { + case BYT_PULL_ASSIGN_UP: + pull = "up"; + break; + case BYT_PULL_ASSIGN_DOWN: + pull = "down"; + break; + } + + switch (conf0 & BYT_PULL_STR_MASK) { + case BYT_PULL_STR_2K: + pull_str = "2k"; + break; + case BYT_PULL_STR_10K: + pull_str = "10k"; + break; + case BYT_PULL_STR_20K: + pull_str = "20k"; + break; + case BYT_PULL_STR_40K: + pull_str = "40k"; + break; + } + + seq_printf(s, + " gpio-%-3d (%-20.20s) %s %s %s pad-%-3d offset:0x%03x mux:%d %s%s%s", + i, + label, + val & BYT_INPUT_EN ? " " : "in", + val & BYT_OUTPUT_EN ? " " : "out", + val & BYT_LEVEL ? "hi" : "lo", + vg->range->pins[i], offs, + conf0 & 0x7, + conf0 & BYT_TRIG_NEG ? " fall" : " ", + conf0 & BYT_TRIG_POS ? " rise" : " ", + conf0 & BYT_TRIG_LVL ? " level" : " "); + + if (pull && pull_str) + seq_printf(s, " %-4s %-3s", pull, pull_str); + else + seq_puts(s, " "); + + if (conf0 & BYT_IODEN) + seq_puts(s, " open-drain"); + + seq_puts(s, "\n"); + } + spin_unlock_irqrestore(&vg->lock, flags); +} + +static void byt_gpio_irq_handler(unsigned irq, struct irq_desc *desc) +{ + struct irq_data *data = irq_desc_get_irq_data(desc); + struct byt_gpio *vg = to_byt_gpio(irq_desc_get_handler_data(desc)); + struct irq_chip *chip = irq_data_get_irq_chip(data); + u32 base, pin; + void __iomem *reg; + unsigned long pending; + unsigned virq; + + /* check from GPIO controller which pin triggered the interrupt */ + for (base = 0; base < vg->chip.ngpio; base += 32) { + reg = byt_gpio_reg(&vg->chip, base, BYT_INT_STAT_REG); + pending = readl(reg); + for_each_set_bit(pin, &pending, 32) { + virq = irq_find_mapping(vg->chip.irqdomain, base + pin); + generic_handle_irq(virq); + } + } + chip->irq_eoi(data); +} + +static void byt_irq_ack(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct byt_gpio *vg = to_byt_gpio(gc); + unsigned offset = irqd_to_hwirq(d); + void __iomem *reg; + + reg = byt_gpio_reg(&vg->chip, offset, BYT_INT_STAT_REG); + writel(BIT(offset % 32), reg); +} + +static void byt_irq_unmask(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct byt_gpio *vg = to_byt_gpio(gc); + unsigned offset = irqd_to_hwirq(d); + unsigned long flags; + void __iomem *reg; + u32 value; + + spin_lock_irqsave(&vg->lock, flags); + + reg = byt_gpio_reg(&vg->chip, offset, BYT_CONF0_REG); + value = readl(reg); + + switch (irqd_get_trigger_type(d)) { + case IRQ_TYPE_LEVEL_HIGH: + value |= BYT_TRIG_LVL; + case IRQ_TYPE_EDGE_RISING: + value |= BYT_TRIG_POS; + break; + case IRQ_TYPE_LEVEL_LOW: + value |= BYT_TRIG_LVL; + case IRQ_TYPE_EDGE_FALLING: + value |= BYT_TRIG_NEG; + break; + case IRQ_TYPE_EDGE_BOTH: + value |= (BYT_TRIG_NEG | BYT_TRIG_POS); + break; + } + + writel(value, reg); + + spin_unlock_irqrestore(&vg->lock, flags); +} + +static void byt_irq_mask(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct byt_gpio *vg = to_byt_gpio(gc); + + byt_gpio_clear_triggering(vg, irqd_to_hwirq(d)); +} + +static struct irq_chip byt_irqchip = { + .name = "BYT-GPIO", + .irq_ack = byt_irq_ack, + .irq_mask = byt_irq_mask, + .irq_unmask = byt_irq_unmask, + .irq_set_type = byt_irq_type, + .flags = IRQCHIP_SKIP_SET_WAKE, +}; + +static void byt_gpio_irq_init_hw(struct byt_gpio *vg) +{ + void __iomem *reg; + u32 base, value; + int i; + + /* + * Clear interrupt triggers for all pins that are GPIOs and + * do not use direct IRQ mode. This will prevent spurious + * interrupts from misconfigured pins. + */ + for (i = 0; i < vg->chip.ngpio; i++) { + value = readl(byt_gpio_reg(&vg->chip, i, BYT_CONF0_REG)); + if ((value & BYT_PIN_MUX) == byt_get_gpio_mux(vg, i) && + !(value & BYT_DIRECT_IRQ_EN)) { + byt_gpio_clear_triggering(vg, i); + dev_dbg(&vg->pdev->dev, "disabling GPIO %d\n", i); + } + } + + /* clear interrupt status trigger registers */ + for (base = 0; base < vg->chip.ngpio; base += 32) { + reg = byt_gpio_reg(&vg->chip, base, BYT_INT_STAT_REG); + writel(0xffffffff, reg); + /* make sure trigger bits are cleared, if not then a pin + might be misconfigured in bios */ + value = readl(reg); + if (value) + dev_err(&vg->pdev->dev, + "GPIO interrupt error, pins misconfigured\n"); + } +} + +static int byt_gpio_probe(struct platform_device *pdev) +{ + struct byt_gpio *vg; + struct gpio_chip *gc; + struct resource *mem_rc, *irq_rc; + struct device *dev = &pdev->dev; + struct acpi_device *acpi_dev; + struct pinctrl_gpio_range *range; + acpi_handle handle = ACPI_HANDLE(dev); + int ret; + + if (acpi_bus_get_device(handle, &acpi_dev)) + return -ENODEV; + + vg = devm_kzalloc(dev, sizeof(struct byt_gpio), GFP_KERNEL); + if (!vg) { + dev_err(&pdev->dev, "can't allocate byt_gpio chip data\n"); + return -ENOMEM; + } + + for (range = byt_ranges; range->name; range++) { + if (!strcmp(acpi_dev->pnp.unique_id, range->name)) { + vg->chip.ngpio = range->npins; + vg->range = range; + break; + } + } + + if (!vg->chip.ngpio || !vg->range) + return -ENODEV; + + vg->pdev = pdev; + platform_set_drvdata(pdev, vg); + + mem_rc = platform_get_resource(pdev, IORESOURCE_MEM, 0); + vg->reg_base = devm_ioremap_resource(dev, mem_rc); + if (IS_ERR(vg->reg_base)) + return PTR_ERR(vg->reg_base); + + spin_lock_init(&vg->lock); + + gc = &vg->chip; + gc->label = dev_name(&pdev->dev); + gc->owner = THIS_MODULE; + gc->request = byt_gpio_request; + gc->free = byt_gpio_free; + gc->direction_input = byt_gpio_direction_input; + gc->direction_output = byt_gpio_direction_output; + gc->get = byt_gpio_get; + gc->set = byt_gpio_set; + gc->dbg_show = byt_gpio_dbg_show; + gc->base = -1; + gc->can_sleep = false; + gc->dev = dev; + +#ifdef CONFIG_PM_SLEEP + vg->saved_context = devm_kcalloc(&pdev->dev, gc->ngpio, + sizeof(*vg->saved_context), GFP_KERNEL); +#endif + + ret = gpiochip_add(gc); + if (ret) { + dev_err(&pdev->dev, "failed adding byt-gpio chip\n"); + return ret; + } + + /* set up interrupts */ + irq_rc = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (irq_rc && irq_rc->start) { + byt_gpio_irq_init_hw(vg); + ret = gpiochip_irqchip_add(gc, &byt_irqchip, 0, + handle_simple_irq, IRQ_TYPE_NONE); + if (ret) { + dev_err(dev, "failed to add irqchip\n"); + gpiochip_remove(gc); + return ret; + } + + gpiochip_set_chained_irqchip(gc, &byt_irqchip, + (unsigned)irq_rc->start, + byt_gpio_irq_handler); + } + + pm_runtime_enable(dev); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int byt_gpio_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct byt_gpio *vg = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < vg->chip.ngpio; i++) { + void __iomem *reg; + u32 value; + + reg = byt_gpio_reg(&vg->chip, i, BYT_CONF0_REG); + value = readl(reg) & BYT_CONF0_RESTORE_MASK; + vg->saved_context[i].conf0 = value; + + reg = byt_gpio_reg(&vg->chip, i, BYT_VAL_REG); + value = readl(reg) & BYT_VAL_RESTORE_MASK; + vg->saved_context[i].val = value; + } + + return 0; +} + +static int byt_gpio_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct byt_gpio *vg = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < vg->chip.ngpio; i++) { + void __iomem *reg; + u32 value; + + reg = byt_gpio_reg(&vg->chip, i, BYT_CONF0_REG); + value = readl(reg); + if ((value & BYT_CONF0_RESTORE_MASK) != + vg->saved_context[i].conf0) { + value &= ~BYT_CONF0_RESTORE_MASK; + value |= vg->saved_context[i].conf0; + writel(value, reg); + dev_info(dev, "restored pin %d conf0 %#08x", i, value); + } + + reg = byt_gpio_reg(&vg->chip, i, BYT_VAL_REG); + value = readl(reg); + if ((value & BYT_VAL_RESTORE_MASK) != + vg->saved_context[i].val) { + u32 v; + + v = value & ~BYT_VAL_RESTORE_MASK; + v |= vg->saved_context[i].val; + if (v != value) { + writel(v, reg); + dev_dbg(dev, "restored pin %d val %#08x\n", + i, v); + } + } + } + + return 0; +} +#endif + +static int byt_gpio_runtime_suspend(struct device *dev) +{ + return 0; +} + +static int byt_gpio_runtime_resume(struct device *dev) +{ + return 0; +} + +static const struct dev_pm_ops byt_gpio_pm_ops = { + SET_LATE_SYSTEM_SLEEP_PM_OPS(byt_gpio_suspend, byt_gpio_resume) + SET_RUNTIME_PM_OPS(byt_gpio_runtime_suspend, byt_gpio_runtime_resume, + NULL) +}; + +static const struct acpi_device_id byt_gpio_acpi_match[] = { + { "INT33B2", 0 }, + { "INT33FC", 0 }, + { } +}; +MODULE_DEVICE_TABLE(acpi, byt_gpio_acpi_match); + +static int byt_gpio_remove(struct platform_device *pdev) +{ + struct byt_gpio *vg = platform_get_drvdata(pdev); + + pm_runtime_disable(&pdev->dev); + gpiochip_remove(&vg->chip); + + return 0; +} + +static struct platform_driver byt_gpio_driver = { + .probe = byt_gpio_probe, + .remove = byt_gpio_remove, + .driver = { + .name = "byt_gpio", + .pm = &byt_gpio_pm_ops, + .acpi_match_table = ACPI_PTR(byt_gpio_acpi_match), + }, +}; + +static int __init byt_gpio_init(void) +{ + return platform_driver_register(&byt_gpio_driver); +} +subsys_initcall(byt_gpio_init); + +static void __exit byt_gpio_exit(void) +{ + platform_driver_unregister(&byt_gpio_driver); +} +module_exit(byt_gpio_exit); diff --git a/kernel/drivers/pinctrl/intel/pinctrl-cherryview.c b/kernel/drivers/pinctrl/intel/pinctrl-cherryview.c new file mode 100644 index 000000000..732ff757a --- /dev/null +++ b/kernel/drivers/pinctrl/intel/pinctrl-cherryview.c @@ -0,0 +1,1680 @@ +/* + * Cherryview/Braswell pinctrl driver + * + * Copyright (C) 2014, Intel Corporation + * Author: Mika Westerberg <mika.westerberg@linux.intel.com> + * + * This driver is based on the original Cherryview GPIO driver by + * Ning Li <ning.li@intel.com> + * Alan Cox <alan@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/gpio.h> +#include <linux/gpio/driver.h> +#include <linux/acpi.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> +#include <linux/pinctrl/pinconf.h> +#include <linux/pinctrl/pinconf-generic.h> +#include <linux/platform_device.h> + +#define CHV_INTSTAT 0x300 +#define CHV_INTMASK 0x380 + +#define FAMILY_PAD_REGS_OFF 0x4400 +#define FAMILY_PAD_REGS_SIZE 0x400 +#define MAX_FAMILY_PAD_GPIO_NO 15 +#define GPIO_REGS_SIZE 8 + +#define CHV_PADCTRL0 0x000 +#define CHV_PADCTRL0_INTSEL_SHIFT 28 +#define CHV_PADCTRL0_INTSEL_MASK (0xf << CHV_PADCTRL0_INTSEL_SHIFT) +#define CHV_PADCTRL0_TERM_UP BIT(23) +#define CHV_PADCTRL0_TERM_SHIFT 20 +#define CHV_PADCTRL0_TERM_MASK (7 << CHV_PADCTRL0_TERM_SHIFT) +#define CHV_PADCTRL0_TERM_20K 1 +#define CHV_PADCTRL0_TERM_5K 2 +#define CHV_PADCTRL0_TERM_1K 4 +#define CHV_PADCTRL0_PMODE_SHIFT 16 +#define CHV_PADCTRL0_PMODE_MASK (0xf << CHV_PADCTRL0_PMODE_SHIFT) +#define CHV_PADCTRL0_GPIOEN BIT(15) +#define CHV_PADCTRL0_GPIOCFG_SHIFT 8 +#define CHV_PADCTRL0_GPIOCFG_MASK (7 << CHV_PADCTRL0_GPIOCFG_SHIFT) +#define CHV_PADCTRL0_GPIOCFG_GPIO 0 +#define CHV_PADCTRL0_GPIOCFG_GPO 1 +#define CHV_PADCTRL0_GPIOCFG_GPI 2 +#define CHV_PADCTRL0_GPIOCFG_HIZ 3 +#define CHV_PADCTRL0_GPIOTXSTATE BIT(1) +#define CHV_PADCTRL0_GPIORXSTATE BIT(0) + +#define CHV_PADCTRL1 0x004 +#define CHV_PADCTRL1_CFGLOCK BIT(31) +#define CHV_PADCTRL1_INVRXTX_SHIFT 4 +#define CHV_PADCTRL1_INVRXTX_MASK (0xf << CHV_PADCTRL1_INVRXTX_SHIFT) +#define CHV_PADCTRL1_INVRXTX_TXENABLE (2 << CHV_PADCTRL1_INVRXTX_SHIFT) +#define CHV_PADCTRL1_ODEN BIT(3) +#define CHV_PADCTRL1_INVRXTX_RXDATA (4 << CHV_PADCTRL1_INVRXTX_SHIFT) +#define CHV_PADCTRL1_INTWAKECFG_MASK 7 +#define CHV_PADCTRL1_INTWAKECFG_FALLING 1 +#define CHV_PADCTRL1_INTWAKECFG_RISING 2 +#define CHV_PADCTRL1_INTWAKECFG_BOTH 3 +#define CHV_PADCTRL1_INTWAKECFG_LEVEL 4 + +/** + * struct chv_alternate_function - A per group or per pin alternate function + * @pin: Pin number (only used in per pin configs) + * @mode: Mode the pin should be set in + * @invert_oe: Invert OE for this pin + */ +struct chv_alternate_function { + unsigned pin; + u8 mode; + bool invert_oe; +}; + +/** + * struct chv_pincgroup - describes a CHV pin group + * @name: Name of the group + * @pins: An array of pins in this group + * @npins: Number of pins in this group + * @altfunc: Alternate function applied to all pins in this group + * @overrides: Alternate function override per pin or %NULL if not used + * @noverrides: Number of per pin alternate function overrides if + * @overrides != NULL. + */ +struct chv_pingroup { + const char *name; + const unsigned *pins; + size_t npins; + struct chv_alternate_function altfunc; + const struct chv_alternate_function *overrides; + size_t noverrides; +}; + +/** + * struct chv_function - A CHV pinmux function + * @name: Name of the function + * @groups: An array of groups for this function + * @ngroups: Number of groups in @groups + */ +struct chv_function { + const char *name; + const char * const *groups; + size_t ngroups; +}; + +/** + * struct chv_gpio_pinrange - A range of pins that can be used as GPIOs + * @base: Start pin number + * @npins: Number of pins in this range + */ +struct chv_gpio_pinrange { + unsigned base; + unsigned npins; +}; + +/** + * struct chv_community - A community specific configuration + * @uid: ACPI _UID used to match the community + * @pins: All pins in this community + * @npins: Number of pins + * @groups: All groups in this community + * @ngroups: Number of groups + * @functions: All functions in this community + * @nfunctions: Number of functions + * @ngpios: Number of GPIOs in this community + * @gpio_ranges: An array of GPIO ranges in this community + * @ngpio_ranges: Number of GPIO ranges + * @ngpios: Total number of GPIOs in this community + */ +struct chv_community { + const char *uid; + const struct pinctrl_pin_desc *pins; + size_t npins; + const struct chv_pingroup *groups; + size_t ngroups; + const struct chv_function *functions; + size_t nfunctions; + const struct chv_gpio_pinrange *gpio_ranges; + size_t ngpio_ranges; + size_t ngpios; +}; + +struct chv_pin_context { + u32 padctrl0; + u32 padctrl1; +}; + +/** + * struct chv_pinctrl - CHV pinctrl private structure + * @dev: Pointer to the parent device + * @pctldesc: Pin controller description + * @pctldev: Pointer to the pin controller device + * @chip: GPIO chip in this pin controller + * @regs: MMIO registers + * @lock: Lock to serialize register accesses + * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO + * offset (in GPIO number space) + * @community: Community this pinctrl instance represents + * + * The first group in @groups is expected to contain all pins that can be + * used as GPIOs. + */ +struct chv_pinctrl { + struct device *dev; + struct pinctrl_desc pctldesc; + struct pinctrl_dev *pctldev; + struct gpio_chip chip; + void __iomem *regs; + spinlock_t lock; + unsigned intr_lines[16]; + const struct chv_community *community; + u32 saved_intmask; + struct chv_pin_context *saved_pin_context; +}; + +#define gpiochip_to_pinctrl(c) container_of(c, struct chv_pinctrl, chip) + +#define ALTERNATE_FUNCTION(p, m, i) \ + { \ + .pin = (p), \ + .mode = (m), \ + .invert_oe = (i), \ + } + +#define PIN_GROUP(n, p, m, i) \ + { \ + .name = (n), \ + .pins = (p), \ + .npins = ARRAY_SIZE((p)), \ + .altfunc.mode = (m), \ + .altfunc.invert_oe = (i), \ + } + +#define PIN_GROUP_WITH_OVERRIDE(n, p, m, i, o) \ + { \ + .name = (n), \ + .pins = (p), \ + .npins = ARRAY_SIZE((p)), \ + .altfunc.mode = (m), \ + .altfunc.invert_oe = (i), \ + .overrides = (o), \ + .noverrides = ARRAY_SIZE((o)), \ + } + +#define FUNCTION(n, g) \ + { \ + .name = (n), \ + .groups = (g), \ + .ngroups = ARRAY_SIZE((g)), \ + } + +#define GPIO_PINRANGE(start, end) \ + { \ + .base = (start), \ + .npins = (end) - (start) + 1, \ + } + +static const struct pinctrl_pin_desc southwest_pins[] = { + PINCTRL_PIN(0, "FST_SPI_D2"), + PINCTRL_PIN(1, "FST_SPI_D0"), + PINCTRL_PIN(2, "FST_SPI_CLK"), + PINCTRL_PIN(3, "FST_SPI_D3"), + PINCTRL_PIN(4, "FST_SPI_CS1_B"), + PINCTRL_PIN(5, "FST_SPI_D1"), + PINCTRL_PIN(6, "FST_SPI_CS0_B"), + PINCTRL_PIN(7, "FST_SPI_CS2_B"), + + PINCTRL_PIN(15, "UART1_RTS_B"), + PINCTRL_PIN(16, "UART1_RXD"), + PINCTRL_PIN(17, "UART2_RXD"), + PINCTRL_PIN(18, "UART1_CTS_B"), + PINCTRL_PIN(19, "UART2_RTS_B"), + PINCTRL_PIN(20, "UART1_TXD"), + PINCTRL_PIN(21, "UART2_TXD"), + PINCTRL_PIN(22, "UART2_CTS_B"), + + PINCTRL_PIN(30, "MF_HDA_CLK"), + PINCTRL_PIN(31, "MF_HDA_RSTB"), + PINCTRL_PIN(32, "MF_HDA_SDIO"), + PINCTRL_PIN(33, "MF_HDA_SDO"), + PINCTRL_PIN(34, "MF_HDA_DOCKRSTB"), + PINCTRL_PIN(35, "MF_HDA_SYNC"), + PINCTRL_PIN(36, "MF_HDA_SDI1"), + PINCTRL_PIN(37, "MF_HDA_DOCKENB"), + + PINCTRL_PIN(45, "I2C5_SDA"), + PINCTRL_PIN(46, "I2C4_SDA"), + PINCTRL_PIN(47, "I2C6_SDA"), + PINCTRL_PIN(48, "I2C5_SCL"), + PINCTRL_PIN(49, "I2C_NFC_SDA"), + PINCTRL_PIN(50, "I2C4_SCL"), + PINCTRL_PIN(51, "I2C6_SCL"), + PINCTRL_PIN(52, "I2C_NFC_SCL"), + + PINCTRL_PIN(60, "I2C1_SDA"), + PINCTRL_PIN(61, "I2C0_SDA"), + PINCTRL_PIN(62, "I2C2_SDA"), + PINCTRL_PIN(63, "I2C1_SCL"), + PINCTRL_PIN(64, "I2C3_SDA"), + PINCTRL_PIN(65, "I2C0_SCL"), + PINCTRL_PIN(66, "I2C2_SCL"), + PINCTRL_PIN(67, "I2C3_SCL"), + + PINCTRL_PIN(75, "SATA_GP0"), + PINCTRL_PIN(76, "SATA_GP1"), + PINCTRL_PIN(77, "SATA_LEDN"), + PINCTRL_PIN(78, "SATA_GP2"), + PINCTRL_PIN(79, "MF_SMB_ALERTB"), + PINCTRL_PIN(80, "SATA_GP3"), + PINCTRL_PIN(81, "MF_SMB_CLK"), + PINCTRL_PIN(82, "MF_SMB_DATA"), + + PINCTRL_PIN(90, "PCIE_CLKREQ0B"), + PINCTRL_PIN(91, "PCIE_CLKREQ1B"), + PINCTRL_PIN(92, "GP_SSP_2_CLK"), + PINCTRL_PIN(93, "PCIE_CLKREQ2B"), + PINCTRL_PIN(94, "GP_SSP_2_RXD"), + PINCTRL_PIN(95, "PCIE_CLKREQ3B"), + PINCTRL_PIN(96, "GP_SSP_2_FS"), + PINCTRL_PIN(97, "GP_SSP_2_TXD"), +}; + +static const unsigned southwest_fspi_pins[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; +static const unsigned southwest_uart0_pins[] = { 16, 20 }; +static const unsigned southwest_uart1_pins[] = { 15, 16, 18, 20 }; +static const unsigned southwest_uart2_pins[] = { 17, 19, 21, 22 }; +static const unsigned southwest_i2c0_pins[] = { 61, 65 }; +static const unsigned southwest_hda_pins[] = { 30, 31, 32, 33, 34, 35, 36, 37 }; +static const unsigned southwest_lpe_pins[] = { + 30, 31, 32, 33, 34, 35, 36, 37, 92, 94, 96, 97, +}; +static const unsigned southwest_i2c1_pins[] = { 60, 63 }; +static const unsigned southwest_i2c2_pins[] = { 62, 66 }; +static const unsigned southwest_i2c3_pins[] = { 64, 67 }; +static const unsigned southwest_i2c4_pins[] = { 46, 50 }; +static const unsigned southwest_i2c5_pins[] = { 45, 48 }; +static const unsigned southwest_i2c6_pins[] = { 47, 51 }; +static const unsigned southwest_i2c_nfc_pins[] = { 49, 52 }; +static const unsigned southwest_smbus_pins[] = { 79, 81, 82 }; +static const unsigned southwest_spi3_pins[] = { 76, 79, 80, 81, 82 }; + +/* LPE I2S TXD pins need to have invert_oe set */ +static const struct chv_alternate_function southwest_lpe_altfuncs[] = { + ALTERNATE_FUNCTION(30, 1, true), + ALTERNATE_FUNCTION(34, 1, true), + ALTERNATE_FUNCTION(97, 1, true), +}; + +/* + * Two spi3 chipselects are available in different mode than the main spi3 + * functionality, which is using mode 1. + */ +static const struct chv_alternate_function southwest_spi3_altfuncs[] = { + ALTERNATE_FUNCTION(76, 3, false), + ALTERNATE_FUNCTION(80, 3, false), +}; + +static const struct chv_pingroup southwest_groups[] = { + PIN_GROUP("uart0_grp", southwest_uart0_pins, 2, false), + PIN_GROUP("uart1_grp", southwest_uart1_pins, 1, false), + PIN_GROUP("uart2_grp", southwest_uart2_pins, 1, false), + PIN_GROUP("hda_grp", southwest_hda_pins, 2, false), + PIN_GROUP("i2c0_grp", southwest_i2c0_pins, 1, true), + PIN_GROUP("i2c1_grp", southwest_i2c1_pins, 1, true), + PIN_GROUP("i2c2_grp", southwest_i2c2_pins, 1, true), + PIN_GROUP("i2c3_grp", southwest_i2c3_pins, 1, true), + PIN_GROUP("i2c4_grp", southwest_i2c4_pins, 1, true), + PIN_GROUP("i2c5_grp", southwest_i2c5_pins, 1, true), + PIN_GROUP("i2c6_grp", southwest_i2c6_pins, 1, true), + PIN_GROUP("i2c_nfc_grp", southwest_i2c_nfc_pins, 2, true), + + PIN_GROUP_WITH_OVERRIDE("lpe_grp", southwest_lpe_pins, 1, false, + southwest_lpe_altfuncs), + PIN_GROUP_WITH_OVERRIDE("spi3_grp", southwest_spi3_pins, 2, false, + southwest_spi3_altfuncs), +}; + +static const char * const southwest_uart0_groups[] = { "uart0_grp" }; +static const char * const southwest_uart1_groups[] = { "uart1_grp" }; +static const char * const southwest_uart2_groups[] = { "uart2_grp" }; +static const char * const southwest_hda_groups[] = { "hda_grp" }; +static const char * const southwest_lpe_groups[] = { "lpe_grp" }; +static const char * const southwest_i2c0_groups[] = { "i2c0_grp" }; +static const char * const southwest_i2c1_groups[] = { "i2c1_grp" }; +static const char * const southwest_i2c2_groups[] = { "i2c2_grp" }; +static const char * const southwest_i2c3_groups[] = { "i2c3_grp" }; +static const char * const southwest_i2c4_groups[] = { "i2c4_grp" }; +static const char * const southwest_i2c5_groups[] = { "i2c5_grp" }; +static const char * const southwest_i2c6_groups[] = { "i2c6_grp" }; +static const char * const southwest_i2c_nfc_groups[] = { "i2c_nfc_grp" }; +static const char * const southwest_spi3_groups[] = { "spi3_grp" }; + +/* + * Only do pinmuxing for certain LPSS devices for now. Rest of the pins are + * enabled only as GPIOs. + */ +static const struct chv_function southwest_functions[] = { + FUNCTION("uart0", southwest_uart0_groups), + FUNCTION("uart1", southwest_uart1_groups), + FUNCTION("uart2", southwest_uart2_groups), + FUNCTION("hda", southwest_hda_groups), + FUNCTION("lpe", southwest_lpe_groups), + FUNCTION("i2c0", southwest_i2c0_groups), + FUNCTION("i2c1", southwest_i2c1_groups), + FUNCTION("i2c2", southwest_i2c2_groups), + FUNCTION("i2c3", southwest_i2c3_groups), + FUNCTION("i2c4", southwest_i2c4_groups), + FUNCTION("i2c5", southwest_i2c5_groups), + FUNCTION("i2c6", southwest_i2c6_groups), + FUNCTION("i2c_nfc", southwest_i2c_nfc_groups), + FUNCTION("spi3", southwest_spi3_groups), +}; + +static const struct chv_gpio_pinrange southwest_gpio_ranges[] = { + GPIO_PINRANGE(0, 7), + GPIO_PINRANGE(15, 22), + GPIO_PINRANGE(30, 37), + GPIO_PINRANGE(45, 52), + GPIO_PINRANGE(60, 67), + GPIO_PINRANGE(75, 82), + GPIO_PINRANGE(90, 97), +}; + +static const struct chv_community southwest_community = { + .uid = "1", + .pins = southwest_pins, + .npins = ARRAY_SIZE(southwest_pins), + .groups = southwest_groups, + .ngroups = ARRAY_SIZE(southwest_groups), + .functions = southwest_functions, + .nfunctions = ARRAY_SIZE(southwest_functions), + .gpio_ranges = southwest_gpio_ranges, + .ngpio_ranges = ARRAY_SIZE(southwest_gpio_ranges), + .ngpios = ARRAY_SIZE(southwest_pins), +}; + +static const struct pinctrl_pin_desc north_pins[] = { + PINCTRL_PIN(0, "GPIO_DFX_0"), + PINCTRL_PIN(1, "GPIO_DFX_3"), + PINCTRL_PIN(2, "GPIO_DFX_7"), + PINCTRL_PIN(3, "GPIO_DFX_1"), + PINCTRL_PIN(4, "GPIO_DFX_5"), + PINCTRL_PIN(5, "GPIO_DFX_4"), + PINCTRL_PIN(6, "GPIO_DFX_8"), + PINCTRL_PIN(7, "GPIO_DFX_2"), + PINCTRL_PIN(8, "GPIO_DFX_6"), + + PINCTRL_PIN(15, "GPIO_SUS0"), + PINCTRL_PIN(16, "SEC_GPIO_SUS10"), + PINCTRL_PIN(17, "GPIO_SUS3"), + PINCTRL_PIN(18, "GPIO_SUS7"), + PINCTRL_PIN(19, "GPIO_SUS1"), + PINCTRL_PIN(20, "GPIO_SUS5"), + PINCTRL_PIN(21, "SEC_GPIO_SUS11"), + PINCTRL_PIN(22, "GPIO_SUS4"), + PINCTRL_PIN(23, "SEC_GPIO_SUS8"), + PINCTRL_PIN(24, "GPIO_SUS2"), + PINCTRL_PIN(25, "GPIO_SUS6"), + PINCTRL_PIN(26, "CX_PREQ_B"), + PINCTRL_PIN(27, "SEC_GPIO_SUS9"), + + PINCTRL_PIN(30, "TRST_B"), + PINCTRL_PIN(31, "TCK"), + PINCTRL_PIN(32, "PROCHOT_B"), + PINCTRL_PIN(33, "SVIDO_DATA"), + PINCTRL_PIN(34, "TMS"), + PINCTRL_PIN(35, "CX_PRDY_B_2"), + PINCTRL_PIN(36, "TDO_2"), + PINCTRL_PIN(37, "CX_PRDY_B"), + PINCTRL_PIN(38, "SVIDO_ALERT_B"), + PINCTRL_PIN(39, "TDO"), + PINCTRL_PIN(40, "SVIDO_CLK"), + PINCTRL_PIN(41, "TDI"), + + PINCTRL_PIN(45, "GP_CAMERASB_05"), + PINCTRL_PIN(46, "GP_CAMERASB_02"), + PINCTRL_PIN(47, "GP_CAMERASB_08"), + PINCTRL_PIN(48, "GP_CAMERASB_00"), + PINCTRL_PIN(49, "GP_CAMERASB_06"), + PINCTRL_PIN(50, "GP_CAMERASB_10"), + PINCTRL_PIN(51, "GP_CAMERASB_03"), + PINCTRL_PIN(52, "GP_CAMERASB_09"), + PINCTRL_PIN(53, "GP_CAMERASB_01"), + PINCTRL_PIN(54, "GP_CAMERASB_07"), + PINCTRL_PIN(55, "GP_CAMERASB_11"), + PINCTRL_PIN(56, "GP_CAMERASB_04"), + + PINCTRL_PIN(60, "PANEL0_BKLTEN"), + PINCTRL_PIN(61, "HV_DDI0_HPD"), + PINCTRL_PIN(62, "HV_DDI2_DDC_SDA"), + PINCTRL_PIN(63, "PANEL1_BKLTCTL"), + PINCTRL_PIN(64, "HV_DDI1_HPD"), + PINCTRL_PIN(65, "PANEL0_BKLTCTL"), + PINCTRL_PIN(66, "HV_DDI0_DDC_SDA"), + PINCTRL_PIN(67, "HV_DDI2_DDC_SCL"), + PINCTRL_PIN(68, "HV_DDI2_HPD"), + PINCTRL_PIN(69, "PANEL1_VDDEN"), + PINCTRL_PIN(70, "PANEL1_BKLTEN"), + PINCTRL_PIN(71, "HV_DDI0_DDC_SCL"), + PINCTRL_PIN(72, "PANEL0_VDDEN"), +}; + +static const struct chv_gpio_pinrange north_gpio_ranges[] = { + GPIO_PINRANGE(0, 8), + GPIO_PINRANGE(15, 27), + GPIO_PINRANGE(30, 41), + GPIO_PINRANGE(45, 56), + GPIO_PINRANGE(60, 72), +}; + +static const struct chv_community north_community = { + .uid = "2", + .pins = north_pins, + .npins = ARRAY_SIZE(north_pins), + .gpio_ranges = north_gpio_ranges, + .ngpio_ranges = ARRAY_SIZE(north_gpio_ranges), + .ngpios = ARRAY_SIZE(north_pins), +}; + +static const struct pinctrl_pin_desc east_pins[] = { + PINCTRL_PIN(0, "PMU_SLP_S3_B"), + PINCTRL_PIN(1, "PMU_BATLOW_B"), + PINCTRL_PIN(2, "SUS_STAT_B"), + PINCTRL_PIN(3, "PMU_SLP_S0IX_B"), + PINCTRL_PIN(4, "PMU_AC_PRESENT"), + PINCTRL_PIN(5, "PMU_PLTRST_B"), + PINCTRL_PIN(6, "PMU_SUSCLK"), + PINCTRL_PIN(7, "PMU_SLP_LAN_B"), + PINCTRL_PIN(8, "PMU_PWRBTN_B"), + PINCTRL_PIN(9, "PMU_SLP_S4_B"), + PINCTRL_PIN(10, "PMU_WAKE_B"), + PINCTRL_PIN(11, "PMU_WAKE_LAN_B"), + + PINCTRL_PIN(15, "MF_ISH_GPIO_3"), + PINCTRL_PIN(16, "MF_ISH_GPIO_7"), + PINCTRL_PIN(17, "MF_ISH_I2C1_SCL"), + PINCTRL_PIN(18, "MF_ISH_GPIO_1"), + PINCTRL_PIN(19, "MF_ISH_GPIO_5"), + PINCTRL_PIN(20, "MF_ISH_GPIO_9"), + PINCTRL_PIN(21, "MF_ISH_GPIO_0"), + PINCTRL_PIN(22, "MF_ISH_GPIO_4"), + PINCTRL_PIN(23, "MF_ISH_GPIO_8"), + PINCTRL_PIN(24, "MF_ISH_GPIO_2"), + PINCTRL_PIN(25, "MF_ISH_GPIO_6"), + PINCTRL_PIN(26, "MF_ISH_I2C1_SDA"), +}; + +static const struct chv_gpio_pinrange east_gpio_ranges[] = { + GPIO_PINRANGE(0, 11), + GPIO_PINRANGE(15, 26), +}; + +static const struct chv_community east_community = { + .uid = "3", + .pins = east_pins, + .npins = ARRAY_SIZE(east_pins), + .gpio_ranges = east_gpio_ranges, + .ngpio_ranges = ARRAY_SIZE(east_gpio_ranges), + .ngpios = ARRAY_SIZE(east_pins), +}; + +static const struct pinctrl_pin_desc southeast_pins[] = { + PINCTRL_PIN(0, "MF_PLT_CLK0"), + PINCTRL_PIN(1, "PWM1"), + PINCTRL_PIN(2, "MF_PLT_CLK1"), + PINCTRL_PIN(3, "MF_PLT_CLK4"), + PINCTRL_PIN(4, "MF_PLT_CLK3"), + PINCTRL_PIN(5, "PWM0"), + PINCTRL_PIN(6, "MF_PLT_CLK5"), + PINCTRL_PIN(7, "MF_PLT_CLK2"), + + PINCTRL_PIN(15, "SDMMC2_D3_CD_B"), + PINCTRL_PIN(16, "SDMMC1_CLK"), + PINCTRL_PIN(17, "SDMMC1_D0"), + PINCTRL_PIN(18, "SDMMC2_D1"), + PINCTRL_PIN(19, "SDMMC2_CLK"), + PINCTRL_PIN(20, "SDMMC1_D2"), + PINCTRL_PIN(21, "SDMMC2_D2"), + PINCTRL_PIN(22, "SDMMC2_CMD"), + PINCTRL_PIN(23, "SDMMC1_CMD"), + PINCTRL_PIN(24, "SDMMC1_D1"), + PINCTRL_PIN(25, "SDMMC2_D0"), + PINCTRL_PIN(26, "SDMMC1_D3_CD_B"), + + PINCTRL_PIN(30, "SDMMC3_D1"), + PINCTRL_PIN(31, "SDMMC3_CLK"), + PINCTRL_PIN(32, "SDMMC3_D3"), + PINCTRL_PIN(33, "SDMMC3_D2"), + PINCTRL_PIN(34, "SDMMC3_CMD"), + PINCTRL_PIN(35, "SDMMC3_D0"), + + PINCTRL_PIN(45, "MF_LPC_AD2"), + PINCTRL_PIN(46, "LPC_CLKRUNB"), + PINCTRL_PIN(47, "MF_LPC_AD0"), + PINCTRL_PIN(48, "LPC_FRAMEB"), + PINCTRL_PIN(49, "MF_LPC_CLKOUT1"), + PINCTRL_PIN(50, "MF_LPC_AD3"), + PINCTRL_PIN(51, "MF_LPC_CLKOUT0"), + PINCTRL_PIN(52, "MF_LPC_AD1"), + + PINCTRL_PIN(60, "SPI1_MISO"), + PINCTRL_PIN(61, "SPI1_CSO_B"), + PINCTRL_PIN(62, "SPI1_CLK"), + PINCTRL_PIN(63, "MMC1_D6"), + PINCTRL_PIN(64, "SPI1_MOSI"), + PINCTRL_PIN(65, "MMC1_D5"), + PINCTRL_PIN(66, "SPI1_CS1_B"), + PINCTRL_PIN(67, "MMC1_D4_SD_WE"), + PINCTRL_PIN(68, "MMC1_D7"), + PINCTRL_PIN(69, "MMC1_RCLK"), + + PINCTRL_PIN(75, "USB_OC1_B"), + PINCTRL_PIN(76, "PMU_RESETBUTTON_B"), + PINCTRL_PIN(77, "GPIO_ALERT"), + PINCTRL_PIN(78, "SDMMC3_PWR_EN_B"), + PINCTRL_PIN(79, "ILB_SERIRQ"), + PINCTRL_PIN(80, "USB_OC0_B"), + PINCTRL_PIN(81, "SDMMC3_CD_B"), + PINCTRL_PIN(82, "SPKR"), + PINCTRL_PIN(83, "SUSPWRDNACK"), + PINCTRL_PIN(84, "SPARE_PIN"), + PINCTRL_PIN(85, "SDMMC3_1P8_EN"), +}; + +static const unsigned southeast_pwm0_pins[] = { 5 }; +static const unsigned southeast_pwm1_pins[] = { 1 }; +static const unsigned southeast_sdmmc1_pins[] = { + 16, 17, 20, 23, 24, 26, 63, 65, 67, 68, 69, +}; +static const unsigned southeast_sdmmc2_pins[] = { 15, 18, 19, 21, 22, 25 }; +static const unsigned southeast_sdmmc3_pins[] = { + 30, 31, 32, 33, 34, 35, 78, 81, 85, +}; +static const unsigned southeast_spi1_pins[] = { 60, 61, 62, 64, 66 }; +static const unsigned southeast_spi2_pins[] = { 2, 3, 4, 6, 7 }; + +static const struct chv_pingroup southeast_groups[] = { + PIN_GROUP("pwm0_grp", southeast_pwm0_pins, 1, false), + PIN_GROUP("pwm1_grp", southeast_pwm1_pins, 1, false), + PIN_GROUP("sdmmc1_grp", southeast_sdmmc1_pins, 1, false), + PIN_GROUP("sdmmc2_grp", southeast_sdmmc2_pins, 1, false), + PIN_GROUP("sdmmc3_grp", southeast_sdmmc3_pins, 1, false), + PIN_GROUP("spi1_grp", southeast_spi1_pins, 1, false), + PIN_GROUP("spi2_grp", southeast_spi2_pins, 4, false), +}; + +static const char * const southeast_pwm0_groups[] = { "pwm0_grp" }; +static const char * const southeast_pwm1_groups[] = { "pwm1_grp" }; +static const char * const southeast_sdmmc1_groups[] = { "sdmmc1_grp" }; +static const char * const southeast_sdmmc2_groups[] = { "sdmmc2_grp" }; +static const char * const southeast_sdmmc3_groups[] = { "sdmmc3_grp" }; +static const char * const southeast_spi1_groups[] = { "spi1_grp" }; +static const char * const southeast_spi2_groups[] = { "spi2_grp" }; + +static const struct chv_function southeast_functions[] = { + FUNCTION("pwm0", southeast_pwm0_groups), + FUNCTION("pwm1", southeast_pwm1_groups), + FUNCTION("sdmmc1", southeast_sdmmc1_groups), + FUNCTION("sdmmc2", southeast_sdmmc2_groups), + FUNCTION("sdmmc3", southeast_sdmmc3_groups), + FUNCTION("spi1", southeast_spi1_groups), + FUNCTION("spi2", southeast_spi2_groups), +}; + +static const struct chv_gpio_pinrange southeast_gpio_ranges[] = { + GPIO_PINRANGE(0, 7), + GPIO_PINRANGE(15, 26), + GPIO_PINRANGE(30, 35), + GPIO_PINRANGE(45, 52), + GPIO_PINRANGE(60, 69), + GPIO_PINRANGE(75, 85), +}; + +static const struct chv_community southeast_community = { + .uid = "4", + .pins = southeast_pins, + .npins = ARRAY_SIZE(southeast_pins), + .groups = southeast_groups, + .ngroups = ARRAY_SIZE(southeast_groups), + .functions = southeast_functions, + .nfunctions = ARRAY_SIZE(southeast_functions), + .gpio_ranges = southeast_gpio_ranges, + .ngpio_ranges = ARRAY_SIZE(southeast_gpio_ranges), + .ngpios = ARRAY_SIZE(southeast_pins), +}; + +static const struct chv_community *chv_communities[] = { + &southwest_community, + &north_community, + &east_community, + &southeast_community, +}; + +static void __iomem *chv_padreg(struct chv_pinctrl *pctrl, unsigned offset, + unsigned reg) +{ + unsigned family_no = offset / MAX_FAMILY_PAD_GPIO_NO; + unsigned pad_no = offset % MAX_FAMILY_PAD_GPIO_NO; + + offset = FAMILY_PAD_REGS_OFF + FAMILY_PAD_REGS_SIZE * family_no + + GPIO_REGS_SIZE * pad_no; + + return pctrl->regs + offset + reg; +} + +static void chv_writel(u32 value, void __iomem *reg) +{ + writel(value, reg); + /* simple readback to confirm the bus transferring done */ + readl(reg); +} + +/* When Pad Cfg is locked, driver can only change GPIOTXState or GPIORXState */ +static bool chv_pad_locked(struct chv_pinctrl *pctrl, unsigned offset) +{ + void __iomem *reg; + + reg = chv_padreg(pctrl, offset, CHV_PADCTRL1); + return readl(reg) & CHV_PADCTRL1_CFGLOCK; +} + +static int chv_get_groups_count(struct pinctrl_dev *pctldev) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->community->ngroups; +} + +static const char *chv_get_group_name(struct pinctrl_dev *pctldev, + unsigned group) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->community->groups[group].name; +} + +static int chv_get_group_pins(struct pinctrl_dev *pctldev, unsigned group, + const unsigned **pins, unsigned *npins) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + *pins = pctrl->community->groups[group].pins; + *npins = pctrl->community->groups[group].npins; + return 0; +} + +static void chv_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, + unsigned offset) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + unsigned long flags; + u32 ctrl0, ctrl1; + bool locked; + + spin_lock_irqsave(&pctrl->lock, flags); + + ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0)); + ctrl1 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL1)); + locked = chv_pad_locked(pctrl, offset); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + if (ctrl0 & CHV_PADCTRL0_GPIOEN) { + seq_puts(s, "GPIO "); + } else { + u32 mode; + + mode = ctrl0 & CHV_PADCTRL0_PMODE_MASK; + mode >>= CHV_PADCTRL0_PMODE_SHIFT; + + seq_printf(s, "mode %d ", mode); + } + + seq_printf(s, "ctrl0 0x%08x ctrl1 0x%08x", ctrl0, ctrl1); + + if (locked) + seq_puts(s, " [LOCKED]"); +} + +static const struct pinctrl_ops chv_pinctrl_ops = { + .get_groups_count = chv_get_groups_count, + .get_group_name = chv_get_group_name, + .get_group_pins = chv_get_group_pins, + .pin_dbg_show = chv_pin_dbg_show, +}; + +static int chv_get_functions_count(struct pinctrl_dev *pctldev) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->community->nfunctions; +} + +static const char *chv_get_function_name(struct pinctrl_dev *pctldev, + unsigned function) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->community->functions[function].name; +} + +static int chv_get_function_groups(struct pinctrl_dev *pctldev, + unsigned function, + const char * const **groups, + unsigned * const ngroups) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + *groups = pctrl->community->functions[function].groups; + *ngroups = pctrl->community->functions[function].ngroups; + return 0; +} + +static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function, + unsigned group) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct chv_pingroup *grp; + unsigned long flags; + int i; + + grp = &pctrl->community->groups[group]; + + spin_lock_irqsave(&pctrl->lock, flags); + + /* Check first that the pad is not locked */ + for (i = 0; i < grp->npins; i++) { + if (chv_pad_locked(pctrl, grp->pins[i])) { + dev_warn(pctrl->dev, "unable to set mode for locked pin %u\n", + grp->pins[i]); + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EBUSY; + } + } + + for (i = 0; i < grp->npins; i++) { + const struct chv_alternate_function *altfunc = &grp->altfunc; + int pin = grp->pins[i]; + void __iomem *reg; + u32 value; + + /* Check if there is pin-specific config */ + if (grp->overrides) { + int j; + + for (j = 0; j < grp->noverrides; j++) { + if (grp->overrides[j].pin == pin) { + altfunc = &grp->overrides[j]; + break; + } + } + } + + reg = chv_padreg(pctrl, pin, CHV_PADCTRL0); + value = readl(reg); + /* Disable GPIO mode */ + value &= ~CHV_PADCTRL0_GPIOEN; + /* Set to desired mode */ + value &= ~CHV_PADCTRL0_PMODE_MASK; + value |= altfunc->mode << CHV_PADCTRL0_PMODE_SHIFT; + chv_writel(value, reg); + + /* Update for invert_oe */ + reg = chv_padreg(pctrl, pin, CHV_PADCTRL1); + value = readl(reg) & ~CHV_PADCTRL1_INVRXTX_MASK; + if (altfunc->invert_oe) + value |= CHV_PADCTRL1_INVRXTX_TXENABLE; + chv_writel(value, reg); + + dev_dbg(pctrl->dev, "configured pin %u mode %u OE %sinverted\n", + pin, altfunc->mode, altfunc->invert_oe ? "" : "not "); + } + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static int chv_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + unsigned long flags; + void __iomem *reg; + u32 value; + + spin_lock_irqsave(&pctrl->lock, flags); + + if (chv_pad_locked(pctrl, offset)) { + value = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0)); + if (!(value & CHV_PADCTRL0_GPIOEN)) { + /* Locked so cannot enable */ + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EBUSY; + } + } else { + int i; + + /* Reset the interrupt mapping */ + for (i = 0; i < ARRAY_SIZE(pctrl->intr_lines); i++) { + if (pctrl->intr_lines[i] == offset) { + pctrl->intr_lines[i] = 0; + break; + } + } + + /* Disable interrupt generation */ + reg = chv_padreg(pctrl, offset, CHV_PADCTRL1); + value = readl(reg); + value &= ~CHV_PADCTRL1_INTWAKECFG_MASK; + value &= ~CHV_PADCTRL1_INVRXTX_MASK; + chv_writel(value, reg); + + reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); + value = readl(reg); + + /* + * If the pin is in HiZ mode (both TX and RX buffers are + * disabled) we turn it to be input now. + */ + if ((value & CHV_PADCTRL0_GPIOCFG_MASK) == + (CHV_PADCTRL0_GPIOCFG_HIZ << CHV_PADCTRL0_GPIOCFG_SHIFT)) { + value &= ~CHV_PADCTRL0_GPIOCFG_MASK; + value |= CHV_PADCTRL0_GPIOCFG_GPI << + CHV_PADCTRL0_GPIOCFG_SHIFT; + } + + /* Switch to a GPIO mode */ + value |= CHV_PADCTRL0_GPIOEN; + chv_writel(value, reg); + } + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static void chv_gpio_disable_free(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + unsigned long flags; + void __iomem *reg; + u32 value; + + spin_lock_irqsave(&pctrl->lock, flags); + + reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); + value = readl(reg) & ~CHV_PADCTRL0_GPIOEN; + chv_writel(value, reg); + + spin_unlock_irqrestore(&pctrl->lock, flags); +} + +static int chv_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset, bool input) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + void __iomem *reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); + unsigned long flags; + u32 ctrl0; + + spin_lock_irqsave(&pctrl->lock, flags); + + ctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIOCFG_MASK; + if (input) + ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPI << CHV_PADCTRL0_GPIOCFG_SHIFT; + else + ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPO << CHV_PADCTRL0_GPIOCFG_SHIFT; + chv_writel(ctrl0, reg); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static const struct pinmux_ops chv_pinmux_ops = { + .get_functions_count = chv_get_functions_count, + .get_function_name = chv_get_function_name, + .get_function_groups = chv_get_function_groups, + .set_mux = chv_pinmux_set_mux, + .gpio_request_enable = chv_gpio_request_enable, + .gpio_disable_free = chv_gpio_disable_free, + .gpio_set_direction = chv_gpio_set_direction, +}; + +static int chv_config_get(struct pinctrl_dev *pctldev, unsigned pin, + unsigned long *config) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + enum pin_config_param param = pinconf_to_config_param(*config); + unsigned long flags; + u32 ctrl0, ctrl1; + u16 arg = 0; + u32 term; + + spin_lock_irqsave(&pctrl->lock, flags); + ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + ctrl1 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1)); + spin_unlock_irqrestore(&pctrl->lock, flags); + + term = (ctrl0 & CHV_PADCTRL0_TERM_MASK) >> CHV_PADCTRL0_TERM_SHIFT; + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + if (term) + return -EINVAL; + break; + + case PIN_CONFIG_BIAS_PULL_UP: + if (!(ctrl0 & CHV_PADCTRL0_TERM_UP)) + return -EINVAL; + + switch (term) { + case CHV_PADCTRL0_TERM_20K: + arg = 20000; + break; + case CHV_PADCTRL0_TERM_5K: + arg = 5000; + break; + case CHV_PADCTRL0_TERM_1K: + arg = 1000; + break; + } + + break; + + case PIN_CONFIG_BIAS_PULL_DOWN: + if (!term || (ctrl0 & CHV_PADCTRL0_TERM_UP)) + return -EINVAL; + + switch (term) { + case CHV_PADCTRL0_TERM_20K: + arg = 20000; + break; + case CHV_PADCTRL0_TERM_5K: + arg = 5000; + break; + } + + break; + + case PIN_CONFIG_DRIVE_OPEN_DRAIN: + if (!(ctrl1 & CHV_PADCTRL1_ODEN)) + return -EINVAL; + break; + + case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: { + u32 cfg; + + cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK; + cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT; + if (cfg != CHV_PADCTRL0_GPIOCFG_HIZ) + return -EINVAL; + + break; + } + + default: + return -ENOTSUPP; + } + + *config = pinconf_to_config_packed(param, arg); + return 0; +} + +static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin, + enum pin_config_param param, u16 arg) +{ + void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL0); + unsigned long flags; + u32 ctrl0, pull; + + spin_lock_irqsave(&pctrl->lock, flags); + ctrl0 = readl(reg); + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP); + break; + + case PIN_CONFIG_BIAS_PULL_UP: + ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP); + + switch (arg) { + case 1000: + /* For 1k there is only pull up */ + pull = CHV_PADCTRL0_TERM_1K << CHV_PADCTRL0_TERM_SHIFT; + break; + case 5000: + pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT; + break; + case 20000: + pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT; + break; + default: + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EINVAL; + } + + ctrl0 |= CHV_PADCTRL0_TERM_UP | pull; + break; + + case PIN_CONFIG_BIAS_PULL_DOWN: + ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP); + + switch (arg) { + case 5000: + pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT; + break; + case 20000: + pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT; + break; + default: + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EINVAL; + } + + ctrl0 |= pull; + break; + + default: + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EINVAL; + } + + chv_writel(ctrl0, reg); + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static int chv_config_set(struct pinctrl_dev *pctldev, unsigned pin, + unsigned long *configs, unsigned nconfigs) +{ + struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + enum pin_config_param param; + int i, ret; + u16 arg; + + if (chv_pad_locked(pctrl, pin)) + return -EBUSY; + + for (i = 0; i < nconfigs; i++) { + param = pinconf_to_config_param(configs[i]); + arg = pinconf_to_config_argument(configs[i]); + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + case PIN_CONFIG_BIAS_PULL_UP: + case PIN_CONFIG_BIAS_PULL_DOWN: + ret = chv_config_set_pull(pctrl, pin, param, arg); + if (ret) + return ret; + break; + + default: + return -ENOTSUPP; + } + + dev_dbg(pctrl->dev, "pin %d set config %d arg %u\n", pin, + param, arg); + } + + return 0; +} + +static const struct pinconf_ops chv_pinconf_ops = { + .is_generic = true, + .pin_config_set = chv_config_set, + .pin_config_get = chv_config_get, +}; + +static struct pinctrl_desc chv_pinctrl_desc = { + .pctlops = &chv_pinctrl_ops, + .pmxops = &chv_pinmux_ops, + .confops = &chv_pinconf_ops, + .owner = THIS_MODULE, +}; + +static int chv_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} + +static void chv_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(chip->base + offset); +} + +static unsigned chv_gpio_offset_to_pin(struct chv_pinctrl *pctrl, + unsigned offset) +{ + return pctrl->community->pins[offset].number; +} + +static int chv_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip); + int pin = chv_gpio_offset_to_pin(pctrl, offset); + u32 ctrl0, cfg; + + ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + + cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK; + cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT; + + if (cfg == CHV_PADCTRL0_GPIOCFG_GPO) + return !!(ctrl0 & CHV_PADCTRL0_GPIOTXSTATE); + return !!(ctrl0 & CHV_PADCTRL0_GPIORXSTATE); +} + +static void chv_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip); + unsigned pin = chv_gpio_offset_to_pin(pctrl, offset); + unsigned long flags; + void __iomem *reg; + u32 ctrl0; + + spin_lock_irqsave(&pctrl->lock, flags); + + reg = chv_padreg(pctrl, pin, CHV_PADCTRL0); + ctrl0 = readl(reg); + + if (value) + ctrl0 |= CHV_PADCTRL0_GPIOTXSTATE; + else + ctrl0 &= ~CHV_PADCTRL0_GPIOTXSTATE; + + chv_writel(ctrl0, reg); + + spin_unlock_irqrestore(&pctrl->lock, flags); +} + +static int chv_gpio_get_direction(struct gpio_chip *chip, unsigned offset) +{ + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip); + unsigned pin = chv_gpio_offset_to_pin(pctrl, offset); + u32 ctrl0, direction; + + ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + + direction = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK; + direction >>= CHV_PADCTRL0_GPIOCFG_SHIFT; + + return direction != CHV_PADCTRL0_GPIOCFG_GPO; +} + +static int chv_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_gpio_direction_input(chip->base + offset); +} + +static int chv_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + chv_gpio_set(chip, offset, value); + return pinctrl_gpio_direction_output(chip->base + offset); +} + +static const struct gpio_chip chv_gpio_chip = { + .owner = THIS_MODULE, + .request = chv_gpio_request, + .free = chv_gpio_free, + .get_direction = chv_gpio_get_direction, + .direction_input = chv_gpio_direction_input, + .direction_output = chv_gpio_direction_output, + .get = chv_gpio_get, + .set = chv_gpio_set, +}; + +static void chv_gpio_irq_ack(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d)); + u32 intr_line; + + spin_lock(&pctrl->lock); + + intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + intr_line &= CHV_PADCTRL0_INTSEL_MASK; + intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT; + chv_writel(BIT(intr_line), pctrl->regs + CHV_INTSTAT); + + spin_unlock(&pctrl->lock); +} + +static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d)); + u32 value, intr_line; + unsigned long flags; + + spin_lock_irqsave(&pctrl->lock, flags); + + intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + intr_line &= CHV_PADCTRL0_INTSEL_MASK; + intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT; + + value = readl(pctrl->regs + CHV_INTMASK); + if (mask) + value &= ~BIT(intr_line); + else + value |= BIT(intr_line); + chv_writel(value, pctrl->regs + CHV_INTMASK); + + spin_unlock_irqrestore(&pctrl->lock, flags); +} + +static void chv_gpio_irq_mask(struct irq_data *d) +{ + chv_gpio_irq_mask_unmask(d, true); +} + +static void chv_gpio_irq_unmask(struct irq_data *d) +{ + chv_gpio_irq_mask_unmask(d, false); +} + +static unsigned chv_gpio_irq_startup(struct irq_data *d) +{ + /* + * Check if the interrupt has been requested with 0 as triggering + * type. In that case it is assumed that the current values + * programmed to the hardware are used (e.g BIOS configured + * defaults). + * + * In that case ->irq_set_type() will never be called so we need to + * read back the values from hardware now, set correct flow handler + * and update mappings before the interrupt is being used. + */ + if (irqd_get_trigger_type(d) == IRQ_TYPE_NONE) { + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + unsigned offset = irqd_to_hwirq(d); + int pin = chv_gpio_offset_to_pin(pctrl, offset); + irq_flow_handler_t handler; + unsigned long flags; + u32 intsel, value; + + intsel = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + intsel &= CHV_PADCTRL0_INTSEL_MASK; + intsel >>= CHV_PADCTRL0_INTSEL_SHIFT; + + value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1)); + if (value & CHV_PADCTRL1_INTWAKECFG_LEVEL) + handler = handle_level_irq; + else + handler = handle_edge_irq; + + spin_lock_irqsave(&pctrl->lock, flags); + if (!pctrl->intr_lines[intsel]) { + __irq_set_handler_locked(d->irq, handler); + pctrl->intr_lines[intsel] = offset; + } + spin_unlock_irqrestore(&pctrl->lock, flags); + } + + chv_gpio_irq_unmask(d); + return 0; +} + +static int chv_gpio_irq_type(struct irq_data *d, unsigned type) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + unsigned offset = irqd_to_hwirq(d); + int pin = chv_gpio_offset_to_pin(pctrl, offset); + unsigned long flags; + u32 value; + + spin_lock_irqsave(&pctrl->lock, flags); + + /* + * Pins which can be used as shared interrupt are configured in + * BIOS. Driver trusts BIOS configurations and assigns different + * handler according to the irq type. + * + * Driver needs to save the mapping between each pin and + * its interrupt line. + * 1. If the pin cfg is locked in BIOS: + * Trust BIOS has programmed IntWakeCfg bits correctly, + * driver just needs to save the mapping. + * 2. If the pin cfg is not locked in BIOS: + * Driver programs the IntWakeCfg bits and save the mapping. + */ + if (!chv_pad_locked(pctrl, pin)) { + void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL1); + + value = readl(reg); + value &= ~CHV_PADCTRL1_INTWAKECFG_MASK; + value &= ~CHV_PADCTRL1_INVRXTX_MASK; + + if (type & IRQ_TYPE_EDGE_BOTH) { + if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) + value |= CHV_PADCTRL1_INTWAKECFG_BOTH; + else if (type & IRQ_TYPE_EDGE_RISING) + value |= CHV_PADCTRL1_INTWAKECFG_RISING; + else if (type & IRQ_TYPE_EDGE_FALLING) + value |= CHV_PADCTRL1_INTWAKECFG_FALLING; + } else if (type & IRQ_TYPE_LEVEL_MASK) { + value |= CHV_PADCTRL1_INTWAKECFG_LEVEL; + if (type & IRQ_TYPE_LEVEL_LOW) + value |= CHV_PADCTRL1_INVRXTX_RXDATA; + } + + chv_writel(value, reg); + } + + value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); + value &= CHV_PADCTRL0_INTSEL_MASK; + value >>= CHV_PADCTRL0_INTSEL_SHIFT; + + pctrl->intr_lines[value] = offset; + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(d->irq, handle_edge_irq); + else if (type & IRQ_TYPE_LEVEL_MASK) + __irq_set_handler_locked(d->irq, handle_level_irq); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static struct irq_chip chv_gpio_irqchip = { + .name = "chv-gpio", + .irq_startup = chv_gpio_irq_startup, + .irq_ack = chv_gpio_irq_ack, + .irq_mask = chv_gpio_irq_mask, + .irq_unmask = chv_gpio_irq_unmask, + .irq_set_type = chv_gpio_irq_type, + .flags = IRQCHIP_SKIP_SET_WAKE, +}; + +static void chv_gpio_irq_handler(unsigned irq, struct irq_desc *desc) +{ + struct gpio_chip *gc = irq_desc_get_handler_data(desc); + struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + struct irq_chip *chip = irq_get_chip(irq); + unsigned long pending; + u32 intr_line; + + chained_irq_enter(chip, desc); + + pending = readl(pctrl->regs + CHV_INTSTAT); + for_each_set_bit(intr_line, &pending, 16) { + unsigned irq, offset; + + offset = pctrl->intr_lines[intr_line]; + irq = irq_find_mapping(gc->irqdomain, offset); + generic_handle_irq(irq); + } + + chained_irq_exit(chip, desc); +} + +static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) +{ + const struct chv_gpio_pinrange *range; + struct gpio_chip *chip = &pctrl->chip; + int ret, i, offset; + + *chip = chv_gpio_chip; + + chip->ngpio = pctrl->community->ngpios; + chip->label = dev_name(pctrl->dev); + chip->dev = pctrl->dev; + chip->base = -1; + + ret = gpiochip_add(chip); + if (ret) { + dev_err(pctrl->dev, "Failed to register gpiochip\n"); + return ret; + } + + for (i = 0, offset = 0; i < pctrl->community->ngpio_ranges; i++) { + range = &pctrl->community->gpio_ranges[i]; + ret = gpiochip_add_pin_range(chip, dev_name(pctrl->dev), offset, + range->base, range->npins); + if (ret) { + dev_err(pctrl->dev, "failed to add GPIO pin range\n"); + goto fail; + } + + offset += range->npins; + } + + /* Mask and clear all interrupts */ + chv_writel(0, pctrl->regs + CHV_INTMASK); + chv_writel(0xffff, pctrl->regs + CHV_INTSTAT); + + ret = gpiochip_irqchip_add(chip, &chv_gpio_irqchip, 0, + handle_simple_irq, IRQ_TYPE_NONE); + if (ret) { + dev_err(pctrl->dev, "failed to add IRQ chip\n"); + goto fail; + } + + gpiochip_set_chained_irqchip(chip, &chv_gpio_irqchip, irq, + chv_gpio_irq_handler); + return 0; + +fail: + gpiochip_remove(chip); + + return ret; +} + +static int chv_pinctrl_probe(struct platform_device *pdev) +{ + struct chv_pinctrl *pctrl; + struct acpi_device *adev; + struct resource *res; + int ret, irq, i; + + adev = ACPI_COMPANION(&pdev->dev); + if (!adev) + return -ENODEV; + + pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL); + if (!pctrl) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(chv_communities); i++) + if (!strcmp(adev->pnp.unique_id, chv_communities[i]->uid)) { + pctrl->community = chv_communities[i]; + break; + } + if (i == ARRAY_SIZE(chv_communities)) + return -ENODEV; + + spin_lock_init(&pctrl->lock); + pctrl->dev = &pdev->dev; + +#ifdef CONFIG_PM_SLEEP + pctrl->saved_pin_context = devm_kcalloc(pctrl->dev, + pctrl->community->npins, sizeof(*pctrl->saved_pin_context), + GFP_KERNEL); + if (!pctrl->saved_pin_context) + return -ENOMEM; +#endif + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + pctrl->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(pctrl->regs)) + return PTR_ERR(pctrl->regs); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "failed to get interrupt number\n"); + return irq; + } + + pctrl->pctldesc = chv_pinctrl_desc; + pctrl->pctldesc.name = dev_name(&pdev->dev); + pctrl->pctldesc.pins = pctrl->community->pins; + pctrl->pctldesc.npins = pctrl->community->npins; + + pctrl->pctldev = pinctrl_register(&pctrl->pctldesc, &pdev->dev, pctrl); + if (!pctrl->pctldev) { + dev_err(&pdev->dev, "failed to register pinctrl driver\n"); + return -ENODEV; + } + + ret = chv_gpio_probe(pctrl, irq); + if (ret) { + pinctrl_unregister(pctrl->pctldev); + return ret; + } + + platform_set_drvdata(pdev, pctrl); + + return 0; +} + +static int chv_pinctrl_remove(struct platform_device *pdev) +{ + struct chv_pinctrl *pctrl = platform_get_drvdata(pdev); + + gpiochip_remove(&pctrl->chip); + pinctrl_unregister(pctrl->pctldev); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int chv_pinctrl_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct chv_pinctrl *pctrl = platform_get_drvdata(pdev); + int i; + + pctrl->saved_intmask = readl(pctrl->regs + CHV_INTMASK); + + for (i = 0; i < pctrl->community->npins; i++) { + const struct pinctrl_pin_desc *desc; + struct chv_pin_context *ctx; + void __iomem *reg; + + desc = &pctrl->community->pins[i]; + if (chv_pad_locked(pctrl, desc->number)) + continue; + + ctx = &pctrl->saved_pin_context[i]; + + reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0); + ctx->padctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE; + + reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1); + ctx->padctrl1 = readl(reg); + } + + return 0; +} + +static int chv_pinctrl_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct chv_pinctrl *pctrl = platform_get_drvdata(pdev); + int i; + + /* + * Mask all interrupts before restoring per-pin configuration + * registers because we don't know in which state BIOS left them + * upon exiting suspend. + */ + chv_writel(0, pctrl->regs + CHV_INTMASK); + + for (i = 0; i < pctrl->community->npins; i++) { + const struct pinctrl_pin_desc *desc; + const struct chv_pin_context *ctx; + void __iomem *reg; + u32 val; + + desc = &pctrl->community->pins[i]; + if (chv_pad_locked(pctrl, desc->number)) + continue; + + ctx = &pctrl->saved_pin_context[i]; + + /* Only restore if our saved state differs from the current */ + reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0); + val = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE; + if (ctx->padctrl0 != val) { + chv_writel(ctx->padctrl0, reg); + dev_dbg(pctrl->dev, "restored pin %2u ctrl0 0x%08x\n", + desc->number, readl(reg)); + } + + reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1); + val = readl(reg); + if (ctx->padctrl1 != val) { + chv_writel(ctx->padctrl1, reg); + dev_dbg(pctrl->dev, "restored pin %2u ctrl1 0x%08x\n", + desc->number, readl(reg)); + } + } + + /* + * Now that all pins are restored to known state, we can restore + * the interrupt mask register as well. + */ + chv_writel(0xffff, pctrl->regs + CHV_INTSTAT); + chv_writel(pctrl->saved_intmask, pctrl->regs + CHV_INTMASK); + + return 0; +} +#endif + +static const struct dev_pm_ops chv_pinctrl_pm_ops = { + SET_LATE_SYSTEM_SLEEP_PM_OPS(chv_pinctrl_suspend, chv_pinctrl_resume) +}; + +static const struct acpi_device_id chv_pinctrl_acpi_match[] = { + { "INT33FF" }, + { } +}; +MODULE_DEVICE_TABLE(acpi, chv_pinctrl_acpi_match); + +static struct platform_driver chv_pinctrl_driver = { + .probe = chv_pinctrl_probe, + .remove = chv_pinctrl_remove, + .driver = { + .name = "cherryview-pinctrl", + .pm = &chv_pinctrl_pm_ops, + .acpi_match_table = chv_pinctrl_acpi_match, + }, +}; + +static int __init chv_pinctrl_init(void) +{ + return platform_driver_register(&chv_pinctrl_driver); +} +subsys_initcall(chv_pinctrl_init); + +static void __exit chv_pinctrl_exit(void) +{ + platform_driver_unregister(&chv_pinctrl_driver); +} +module_exit(chv_pinctrl_exit); + +MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); +MODULE_DESCRIPTION("Intel Cherryview/Braswell pinctrl driver"); +MODULE_LICENSE("GPL v2"); diff --git a/kernel/drivers/pinctrl/intel/pinctrl-intel.c b/kernel/drivers/pinctrl/intel/pinctrl-intel.c new file mode 100644 index 000000000..00768e53d --- /dev/null +++ b/kernel/drivers/pinctrl/intel/pinctrl-intel.c @@ -0,0 +1,1149 @@ +/* + * Intel pinctrl/GPIO core driver. + * + * Copyright (C) 2015, Intel Corporation + * Authors: Mathias Nyman <mathias.nyman@linux.intel.com> + * Mika Westerberg <mika.westerberg@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/acpi.h> +#include <linux/gpio.h> +#include <linux/gpio/driver.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> +#include <linux/pinctrl/pinconf.h> +#include <linux/pinctrl/pinconf-generic.h> + +#include "pinctrl-intel.h" + +/* Maximum number of pads in each group */ +#define NPADS_IN_GPP 24 + +/* Offset from regs */ +#define PADBAR 0x00c +#define GPI_IS 0x100 +#define GPI_GPE_STS 0x140 +#define GPI_GPE_EN 0x160 + +#define PADOWN_BITS 4 +#define PADOWN_SHIFT(p) ((p) % 8 * PADOWN_BITS) +#define PADOWN_MASK(p) (0xf << PADOWN_SHIFT(p)) + +/* Offset from pad_regs */ +#define PADCFG0 0x000 +#define PADCFG0_RXEVCFG_SHIFT 25 +#define PADCFG0_RXEVCFG_MASK (3 << PADCFG0_RXEVCFG_SHIFT) +#define PADCFG0_RXEVCFG_LEVEL 0 +#define PADCFG0_RXEVCFG_EDGE 1 +#define PADCFG0_RXEVCFG_DISABLED 2 +#define PADCFG0_RXEVCFG_EDGE_BOTH 3 +#define PADCFG0_RXINV BIT(23) +#define PADCFG0_GPIROUTIOXAPIC BIT(20) +#define PADCFG0_GPIROUTSCI BIT(19) +#define PADCFG0_GPIROUTSMI BIT(18) +#define PADCFG0_GPIROUTNMI BIT(17) +#define PADCFG0_PMODE_SHIFT 10 +#define PADCFG0_PMODE_MASK (0xf << PADCFG0_PMODE_SHIFT) +#define PADCFG0_GPIORXDIS BIT(9) +#define PADCFG0_GPIOTXDIS BIT(8) +#define PADCFG0_GPIORXSTATE BIT(1) +#define PADCFG0_GPIOTXSTATE BIT(0) + +#define PADCFG1 0x004 +#define PADCFG1_TERM_UP BIT(13) +#define PADCFG1_TERM_SHIFT 10 +#define PADCFG1_TERM_MASK (7 << PADCFG1_TERM_SHIFT) +#define PADCFG1_TERM_20K 4 +#define PADCFG1_TERM_2K 3 +#define PADCFG1_TERM_5K 2 +#define PADCFG1_TERM_1K 1 + +struct intel_pad_context { + u32 padcfg0; + u32 padcfg1; +}; + +struct intel_community_context { + u32 *intmask; +}; + +struct intel_pinctrl_context { + struct intel_pad_context *pads; + struct intel_community_context *communities; +}; + +/** + * struct intel_pinctrl - Intel pinctrl private structure + * @dev: Pointer to the device structure + * @lock: Lock to serialize register access + * @pctldesc: Pin controller description + * @pctldev: Pointer to the pin controller device + * @chip: GPIO chip in this pin controller + * @soc: SoC/PCH specific pin configuration data + * @communities: All communities in this pin controller + * @ncommunities: Number of communities in this pin controller + * @context: Configuration saved over system sleep + */ +struct intel_pinctrl { + struct device *dev; + spinlock_t lock; + struct pinctrl_desc pctldesc; + struct pinctrl_dev *pctldev; + struct gpio_chip chip; + const struct intel_pinctrl_soc_data *soc; + struct intel_community *communities; + size_t ncommunities; + struct intel_pinctrl_context context; +}; + +#define gpiochip_to_pinctrl(c) container_of(c, struct intel_pinctrl, chip) +#define pin_to_padno(c, p) ((p) - (c)->pin_base) + +static struct intel_community *intel_get_community(struct intel_pinctrl *pctrl, + unsigned pin) +{ + struct intel_community *community; + int i; + + for (i = 0; i < pctrl->ncommunities; i++) { + community = &pctrl->communities[i]; + if (pin >= community->pin_base && + pin < community->pin_base + community->npins) + return community; + } + + dev_warn(pctrl->dev, "failed to find community for pin %u\n", pin); + return NULL; +} + +static void __iomem *intel_get_padcfg(struct intel_pinctrl *pctrl, unsigned pin, + unsigned reg) +{ + const struct intel_community *community; + unsigned padno; + + community = intel_get_community(pctrl, pin); + if (!community) + return NULL; + + padno = pin_to_padno(community, pin); + return community->pad_regs + reg + padno * 8; +} + +static bool intel_pad_owned_by_host(struct intel_pinctrl *pctrl, unsigned pin) +{ + const struct intel_community *community; + unsigned padno, gpp, gpp_offset, offset; + void __iomem *padown; + + community = intel_get_community(pctrl, pin); + if (!community) + return false; + if (!community->padown_offset) + return true; + + padno = pin_to_padno(community, pin); + gpp = padno / NPADS_IN_GPP; + gpp_offset = padno % NPADS_IN_GPP; + offset = community->padown_offset + gpp * 16 + (gpp_offset / 8) * 4; + padown = community->regs + offset; + + return !(readl(padown) & PADOWN_MASK(padno)); +} + +static bool intel_pad_reserved_for_acpi(struct intel_pinctrl *pctrl, + unsigned pin) +{ + const struct intel_community *community; + unsigned padno, gpp, offset; + void __iomem *hostown; + + community = intel_get_community(pctrl, pin); + if (!community) + return true; + if (!community->hostown_offset) + return false; + + padno = pin_to_padno(community, pin); + gpp = padno / NPADS_IN_GPP; + offset = community->hostown_offset + gpp * 4; + hostown = community->regs + offset; + + return !(readl(hostown) & BIT(padno % NPADS_IN_GPP)); +} + +static bool intel_pad_locked(struct intel_pinctrl *pctrl, unsigned pin) +{ + struct intel_community *community; + unsigned padno, gpp, offset; + u32 value; + + community = intel_get_community(pctrl, pin); + if (!community) + return true; + if (!community->padcfglock_offset) + return false; + + padno = pin_to_padno(community, pin); + gpp = padno / NPADS_IN_GPP; + + /* + * If PADCFGLOCK and PADCFGLOCKTX bits are both clear for this pad, + * the pad is considered unlocked. Any other case means that it is + * either fully or partially locked and we don't touch it. + */ + offset = community->padcfglock_offset + gpp * 8; + value = readl(community->regs + offset); + if (value & BIT(pin % NPADS_IN_GPP)) + return true; + + offset = community->padcfglock_offset + 4 + gpp * 8; + value = readl(community->regs + offset); + if (value & BIT(pin % NPADS_IN_GPP)) + return true; + + return false; +} + +static bool intel_pad_usable(struct intel_pinctrl *pctrl, unsigned pin) +{ + return intel_pad_owned_by_host(pctrl, pin) && + !intel_pad_reserved_for_acpi(pctrl, pin) && + !intel_pad_locked(pctrl, pin); +} + +static int intel_get_groups_count(struct pinctrl_dev *pctldev) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->soc->ngroups; +} + +static const char *intel_get_group_name(struct pinctrl_dev *pctldev, + unsigned group) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->soc->groups[group].name; +} + +static int intel_get_group_pins(struct pinctrl_dev *pctldev, unsigned group, + const unsigned **pins, unsigned *npins) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + *pins = pctrl->soc->groups[group].pins; + *npins = pctrl->soc->groups[group].npins; + return 0; +} + +static void intel_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, + unsigned pin) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + u32 cfg0, cfg1, mode; + bool locked, acpi; + + if (!intel_pad_owned_by_host(pctrl, pin)) { + seq_puts(s, "not available"); + return; + } + + cfg0 = readl(intel_get_padcfg(pctrl, pin, PADCFG0)); + cfg1 = readl(intel_get_padcfg(pctrl, pin, PADCFG1)); + + mode = (cfg0 & PADCFG0_PMODE_MASK) >> PADCFG0_PMODE_SHIFT; + if (!mode) + seq_puts(s, "GPIO "); + else + seq_printf(s, "mode %d ", mode); + + seq_printf(s, "0x%08x 0x%08x", cfg0, cfg1); + + locked = intel_pad_locked(pctrl, pin); + acpi = intel_pad_reserved_for_acpi(pctrl, pin); + + if (locked || acpi) { + seq_puts(s, " ["); + if (locked) { + seq_puts(s, "LOCKED"); + if (acpi) + seq_puts(s, ", "); + } + if (acpi) + seq_puts(s, "ACPI"); + seq_puts(s, "]"); + } +} + +static const struct pinctrl_ops intel_pinctrl_ops = { + .get_groups_count = intel_get_groups_count, + .get_group_name = intel_get_group_name, + .get_group_pins = intel_get_group_pins, + .pin_dbg_show = intel_pin_dbg_show, +}; + +static int intel_get_functions_count(struct pinctrl_dev *pctldev) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->soc->nfunctions; +} + +static const char *intel_get_function_name(struct pinctrl_dev *pctldev, + unsigned function) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + return pctrl->soc->functions[function].name; +} + +static int intel_get_function_groups(struct pinctrl_dev *pctldev, + unsigned function, + const char * const **groups, + unsigned * const ngroups) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + + *groups = pctrl->soc->functions[function].groups; + *ngroups = pctrl->soc->functions[function].ngroups; + return 0; +} + +static int intel_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function, + unsigned group) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct intel_pingroup *grp = &pctrl->soc->groups[group]; + unsigned long flags; + int i; + + spin_lock_irqsave(&pctrl->lock, flags); + + /* + * All pins in the groups needs to be accessible and writable + * before we can enable the mux for this group. + */ + for (i = 0; i < grp->npins; i++) { + if (!intel_pad_usable(pctrl, grp->pins[i])) { + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EBUSY; + } + } + + /* Now enable the mux setting for each pin in the group */ + for (i = 0; i < grp->npins; i++) { + void __iomem *padcfg0; + u32 value; + + padcfg0 = intel_get_padcfg(pctrl, grp->pins[i], PADCFG0); + value = readl(padcfg0); + + value &= ~PADCFG0_PMODE_MASK; + value |= grp->mode << PADCFG0_PMODE_SHIFT; + + writel(value, padcfg0); + } + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static int intel_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned pin) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + void __iomem *padcfg0; + unsigned long flags; + u32 value; + + spin_lock_irqsave(&pctrl->lock, flags); + + if (!intel_pad_usable(pctrl, pin)) { + spin_unlock_irqrestore(&pctrl->lock, flags); + return -EBUSY; + } + + padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0); + /* Put the pad into GPIO mode */ + value = readl(padcfg0) & ~PADCFG0_PMODE_MASK; + /* Disable SCI/SMI/NMI generation */ + value &= ~(PADCFG0_GPIROUTIOXAPIC | PADCFG0_GPIROUTSCI); + value &= ~(PADCFG0_GPIROUTSMI | PADCFG0_GPIROUTNMI); + /* Disable TX buffer and enable RX (this will be input) */ + value &= ~PADCFG0_GPIORXDIS; + value |= PADCFG0_GPIOTXDIS; + writel(value, padcfg0); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static int intel_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned pin, bool input) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + void __iomem *padcfg0; + unsigned long flags; + u32 value; + + spin_lock_irqsave(&pctrl->lock, flags); + + padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0); + + value = readl(padcfg0); + if (input) + value |= PADCFG0_GPIOTXDIS; + else + value &= ~PADCFG0_GPIOTXDIS; + writel(value, padcfg0); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static const struct pinmux_ops intel_pinmux_ops = { + .get_functions_count = intel_get_functions_count, + .get_function_name = intel_get_function_name, + .get_function_groups = intel_get_function_groups, + .set_mux = intel_pinmux_set_mux, + .gpio_request_enable = intel_gpio_request_enable, + .gpio_set_direction = intel_gpio_set_direction, +}; + +static int intel_config_get(struct pinctrl_dev *pctldev, unsigned pin, + unsigned long *config) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + enum pin_config_param param = pinconf_to_config_param(*config); + u32 value, term; + u16 arg = 0; + + if (!intel_pad_owned_by_host(pctrl, pin)) + return -ENOTSUPP; + + value = readl(intel_get_padcfg(pctrl, pin, PADCFG1)); + term = (value & PADCFG1_TERM_MASK) >> PADCFG1_TERM_SHIFT; + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + if (term) + return -EINVAL; + break; + + case PIN_CONFIG_BIAS_PULL_UP: + if (!term || !(value & PADCFG1_TERM_UP)) + return -EINVAL; + + switch (term) { + case PADCFG1_TERM_1K: + arg = 1000; + break; + case PADCFG1_TERM_2K: + arg = 2000; + break; + case PADCFG1_TERM_5K: + arg = 5000; + break; + case PADCFG1_TERM_20K: + arg = 20000; + break; + } + + break; + + case PIN_CONFIG_BIAS_PULL_DOWN: + if (!term || value & PADCFG1_TERM_UP) + return -EINVAL; + + switch (term) { + case PADCFG1_TERM_5K: + arg = 5000; + break; + case PADCFG1_TERM_20K: + arg = 20000; + break; + } + + break; + + default: + return -ENOTSUPP; + } + + *config = pinconf_to_config_packed(param, arg); + return 0; +} + +static int intel_config_set_pull(struct intel_pinctrl *pctrl, unsigned pin, + unsigned long config) +{ + unsigned param = pinconf_to_config_param(config); + unsigned arg = pinconf_to_config_argument(config); + void __iomem *padcfg1; + unsigned long flags; + int ret = 0; + u32 value; + + spin_lock_irqsave(&pctrl->lock, flags); + + padcfg1 = intel_get_padcfg(pctrl, pin, PADCFG1); + value = readl(padcfg1); + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + value &= ~(PADCFG1_TERM_MASK | PADCFG1_TERM_UP); + break; + + case PIN_CONFIG_BIAS_PULL_UP: + value &= ~PADCFG1_TERM_MASK; + + value |= PADCFG1_TERM_UP; + + switch (arg) { + case 20000: + value |= PADCFG1_TERM_20K << PADCFG1_TERM_SHIFT; + break; + case 5000: + value |= PADCFG1_TERM_5K << PADCFG1_TERM_SHIFT; + break; + case 2000: + value |= PADCFG1_TERM_2K << PADCFG1_TERM_SHIFT; + break; + case 1000: + value |= PADCFG1_TERM_1K << PADCFG1_TERM_SHIFT; + break; + default: + ret = -EINVAL; + } + + break; + + case PIN_CONFIG_BIAS_PULL_DOWN: + value &= ~(PADCFG1_TERM_UP | PADCFG1_TERM_MASK); + + switch (arg) { + case 20000: + value |= PADCFG1_TERM_20K << PADCFG1_TERM_SHIFT; + break; + case 5000: + value |= PADCFG1_TERM_5K << PADCFG1_TERM_SHIFT; + break; + default: + ret = -EINVAL; + } + + break; + } + + if (!ret) + writel(value, padcfg1); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return ret; +} + +static int intel_config_set(struct pinctrl_dev *pctldev, unsigned pin, + unsigned long *configs, unsigned nconfigs) +{ + struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + int i, ret; + + if (!intel_pad_usable(pctrl, pin)) + return -ENOTSUPP; + + for (i = 0; i < nconfigs; i++) { + switch (pinconf_to_config_param(configs[i])) { + case PIN_CONFIG_BIAS_DISABLE: + case PIN_CONFIG_BIAS_PULL_UP: + case PIN_CONFIG_BIAS_PULL_DOWN: + ret = intel_config_set_pull(pctrl, pin, configs[i]); + if (ret) + return ret; + break; + + default: + return -ENOTSUPP; + } + } + + return 0; +} + +static const struct pinconf_ops intel_pinconf_ops = { + .is_generic = true, + .pin_config_get = intel_config_get, + .pin_config_set = intel_config_set, +}; + +static const struct pinctrl_desc intel_pinctrl_desc = { + .pctlops = &intel_pinctrl_ops, + .pmxops = &intel_pinmux_ops, + .confops = &intel_pinconf_ops, + .owner = THIS_MODULE, +}; + +static int intel_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_request_gpio(chip->base + offset); +} + +static void intel_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + pinctrl_free_gpio(chip->base + offset); +} + +static int intel_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(chip); + void __iomem *reg; + + reg = intel_get_padcfg(pctrl, offset, PADCFG0); + if (!reg) + return -EINVAL; + + return !!(readl(reg) & PADCFG0_GPIORXSTATE); +} + +static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(chip); + void __iomem *reg; + + reg = intel_get_padcfg(pctrl, offset, PADCFG0); + if (reg) { + unsigned long flags; + u32 padcfg0; + + spin_lock_irqsave(&pctrl->lock, flags); + padcfg0 = readl(reg); + if (value) + padcfg0 |= PADCFG0_GPIOTXSTATE; + else + padcfg0 &= ~PADCFG0_GPIOTXSTATE; + writel(padcfg0, reg); + spin_unlock_irqrestore(&pctrl->lock, flags); + } +} + +static int intel_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return pinctrl_gpio_direction_input(chip->base + offset); +} + +static int intel_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + intel_gpio_set(chip, offset, value); + return pinctrl_gpio_direction_output(chip->base + offset); +} + +static const struct gpio_chip intel_gpio_chip = { + .owner = THIS_MODULE, + .request = intel_gpio_request, + .free = intel_gpio_free, + .direction_input = intel_gpio_direction_input, + .direction_output = intel_gpio_direction_output, + .get = intel_gpio_get, + .set = intel_gpio_set, +}; + +static void intel_gpio_irq_ack(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + const struct intel_community *community; + unsigned pin = irqd_to_hwirq(d); + + spin_lock(&pctrl->lock); + + community = intel_get_community(pctrl, pin); + if (community) { + unsigned padno = pin_to_padno(community, pin); + unsigned gpp_offset = padno % NPADS_IN_GPP; + unsigned gpp = padno / NPADS_IN_GPP; + + writel(BIT(gpp_offset), community->regs + GPI_IS + gpp * 4); + } + + spin_unlock(&pctrl->lock); +} + +static void intel_gpio_irq_mask_unmask(struct irq_data *d, bool mask) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + const struct intel_community *community; + unsigned pin = irqd_to_hwirq(d); + unsigned long flags; + + spin_lock_irqsave(&pctrl->lock, flags); + + community = intel_get_community(pctrl, pin); + if (community) { + unsigned padno = pin_to_padno(community, pin); + unsigned gpp_offset = padno % NPADS_IN_GPP; + unsigned gpp = padno / NPADS_IN_GPP; + void __iomem *reg; + u32 value; + + reg = community->regs + community->ie_offset + gpp * 4; + value = readl(reg); + if (mask) + value &= ~BIT(gpp_offset); + else + value |= BIT(gpp_offset); + writel(value, reg); + } + + spin_unlock_irqrestore(&pctrl->lock, flags); +} + +static void intel_gpio_irq_mask(struct irq_data *d) +{ + intel_gpio_irq_mask_unmask(d, true); +} + +static void intel_gpio_irq_unmask(struct irq_data *d) +{ + intel_gpio_irq_mask_unmask(d, false); +} + +static int intel_gpio_irq_type(struct irq_data *d, unsigned type) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + unsigned pin = irqd_to_hwirq(d); + unsigned long flags; + void __iomem *reg; + u32 value; + + reg = intel_get_padcfg(pctrl, pin, PADCFG0); + if (!reg) + return -EINVAL; + + spin_lock_irqsave(&pctrl->lock, flags); + + value = readl(reg); + + value &= ~(PADCFG0_RXEVCFG_MASK | PADCFG0_RXINV); + + if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) { + value |= PADCFG0_RXEVCFG_EDGE_BOTH << PADCFG0_RXEVCFG_SHIFT; + } else if (type & IRQ_TYPE_EDGE_FALLING) { + value |= PADCFG0_RXEVCFG_EDGE << PADCFG0_RXEVCFG_SHIFT; + value |= PADCFG0_RXINV; + } else if (type & IRQ_TYPE_EDGE_RISING) { + value |= PADCFG0_RXEVCFG_EDGE << PADCFG0_RXEVCFG_SHIFT; + } else if (type & IRQ_TYPE_LEVEL_LOW) { + value |= PADCFG0_RXINV; + } else { + value |= PADCFG0_RXEVCFG_DISABLED << PADCFG0_RXEVCFG_SHIFT; + } + + writel(value, reg); + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(d->irq, handle_edge_irq); + else if (type & IRQ_TYPE_LEVEL_MASK) + __irq_set_handler_locked(d->irq, handle_level_irq); + + spin_unlock_irqrestore(&pctrl->lock, flags); + + return 0; +} + +static int intel_gpio_irq_wake(struct irq_data *d, unsigned int on) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + const struct intel_community *community; + unsigned pin = irqd_to_hwirq(d); + unsigned padno, gpp, gpp_offset; + u32 gpe_en; + + community = intel_get_community(pctrl, pin); + if (!community) + return -EINVAL; + + padno = pin_to_padno(community, pin); + gpp = padno / NPADS_IN_GPP; + gpp_offset = padno % NPADS_IN_GPP; + + /* Clear the existing wake status */ + writel(BIT(gpp_offset), community->regs + GPI_GPE_STS + gpp * 4); + + /* + * The controller will generate wake when GPE of the corresponding + * pad is enabled and it is not routed to SCI (GPIROUTSCI is not + * set). + */ + gpe_en = readl(community->regs + GPI_GPE_EN + gpp * 4); + if (on) + gpe_en |= BIT(gpp_offset); + else + gpe_en &= ~BIT(gpp_offset); + writel(gpe_en, community->regs + GPI_GPE_EN + gpp * 4); + + dev_dbg(pctrl->dev, "%sable wake for pin %u\n", on ? "en" : "dis", pin); + return 0; +} + +static void intel_gpio_community_irq_handler(struct gpio_chip *gc, + const struct intel_community *community) +{ + int gpp; + + for (gpp = 0; gpp < community->ngpps; gpp++) { + unsigned long pending, enabled, gpp_offset; + + pending = readl(community->regs + GPI_IS + gpp * 4); + enabled = readl(community->regs + community->ie_offset + + gpp * 4); + + /* Only interrupts that are enabled */ + pending &= enabled; + + for_each_set_bit(gpp_offset, &pending, NPADS_IN_GPP) { + unsigned padno, irq; + + /* + * The last group in community can have less pins + * than NPADS_IN_GPP. + */ + padno = gpp_offset + gpp * NPADS_IN_GPP; + if (padno >= community->npins) + break; + + irq = irq_find_mapping(gc->irqdomain, + community->pin_base + padno); + generic_handle_irq(irq); + } + } +} + +static void intel_gpio_irq_handler(unsigned irq, struct irq_desc *desc) +{ + struct gpio_chip *gc = irq_desc_get_handler_data(desc); + struct intel_pinctrl *pctrl = gpiochip_to_pinctrl(gc); + struct irq_chip *chip = irq_get_chip(irq); + int i; + + chained_irq_enter(chip, desc); + + /* Need to check all communities for pending interrupts */ + for (i = 0; i < pctrl->ncommunities; i++) + intel_gpio_community_irq_handler(gc, &pctrl->communities[i]); + + chained_irq_exit(chip, desc); +} + +static struct irq_chip intel_gpio_irqchip = { + .name = "intel-gpio", + .irq_ack = intel_gpio_irq_ack, + .irq_mask = intel_gpio_irq_mask, + .irq_unmask = intel_gpio_irq_unmask, + .irq_set_type = intel_gpio_irq_type, + .irq_set_wake = intel_gpio_irq_wake, +}; + +static void intel_gpio_irq_init(struct intel_pinctrl *pctrl) +{ + size_t i; + + for (i = 0; i < pctrl->ncommunities; i++) { + const struct intel_community *community; + void __iomem *base; + unsigned gpp; + + community = &pctrl->communities[i]; + base = community->regs; + + for (gpp = 0; gpp < community->ngpps; gpp++) { + /* Mask and clear all interrupts */ + writel(0, base + community->ie_offset + gpp * 4); + writel(0xffff, base + GPI_IS + gpp * 4); + } + } +} + +static int intel_gpio_probe(struct intel_pinctrl *pctrl, int irq) +{ + int ret; + + pctrl->chip = intel_gpio_chip; + + pctrl->chip.ngpio = pctrl->soc->npins; + pctrl->chip.label = dev_name(pctrl->dev); + pctrl->chip.dev = pctrl->dev; + pctrl->chip.base = -1; + + ret = gpiochip_add(&pctrl->chip); + if (ret) { + dev_err(pctrl->dev, "failed to register gpiochip\n"); + return ret; + } + + ret = gpiochip_add_pin_range(&pctrl->chip, dev_name(pctrl->dev), + 0, 0, pctrl->soc->npins); + if (ret) { + dev_err(pctrl->dev, "failed to add GPIO pin range\n"); + gpiochip_remove(&pctrl->chip); + return ret; + } + + ret = gpiochip_irqchip_add(&pctrl->chip, &intel_gpio_irqchip, 0, + handle_simple_irq, IRQ_TYPE_NONE); + if (ret) { + dev_err(pctrl->dev, "failed to add irqchip\n"); + gpiochip_remove(&pctrl->chip); + return ret; + } + + gpiochip_set_chained_irqchip(&pctrl->chip, &intel_gpio_irqchip, irq, + intel_gpio_irq_handler); + return 0; +} + +static int intel_pinctrl_pm_init(struct intel_pinctrl *pctrl) +{ +#ifdef CONFIG_PM_SLEEP + const struct intel_pinctrl_soc_data *soc = pctrl->soc; + struct intel_community_context *communities; + struct intel_pad_context *pads; + int i; + + pads = devm_kcalloc(pctrl->dev, soc->npins, sizeof(*pads), GFP_KERNEL); + if (!pads) + return -ENOMEM; + + communities = devm_kcalloc(pctrl->dev, pctrl->ncommunities, + sizeof(*communities), GFP_KERNEL); + if (!communities) + return -ENOMEM; + + + for (i = 0; i < pctrl->ncommunities; i++) { + struct intel_community *community = &pctrl->communities[i]; + u32 *intmask; + + intmask = devm_kcalloc(pctrl->dev, community->ngpps, + sizeof(*intmask), GFP_KERNEL); + if (!intmask) + return -ENOMEM; + + communities[i].intmask = intmask; + } + + pctrl->context.pads = pads; + pctrl->context.communities = communities; +#endif + + return 0; +} + +int intel_pinctrl_probe(struct platform_device *pdev, + const struct intel_pinctrl_soc_data *soc_data) +{ + struct intel_pinctrl *pctrl; + int i, ret, irq; + + if (!soc_data) + return -EINVAL; + + pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL); + if (!pctrl) + return -ENOMEM; + + pctrl->dev = &pdev->dev; + pctrl->soc = soc_data; + spin_lock_init(&pctrl->lock); + + /* + * Make a copy of the communities which we can use to hold pointers + * to the registers. + */ + pctrl->ncommunities = pctrl->soc->ncommunities; + pctrl->communities = devm_kcalloc(&pdev->dev, pctrl->ncommunities, + sizeof(*pctrl->communities), GFP_KERNEL); + if (!pctrl->communities) + return -ENOMEM; + + for (i = 0; i < pctrl->ncommunities; i++) { + struct intel_community *community = &pctrl->communities[i]; + struct resource *res; + void __iomem *regs; + u32 padbar; + + *community = pctrl->soc->communities[i]; + + res = platform_get_resource(pdev, IORESOURCE_MEM, + community->barno); + regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + /* Read offset of the pad configuration registers */ + padbar = readl(regs + PADBAR); + + community->regs = regs; + community->pad_regs = regs + padbar; + community->ngpps = DIV_ROUND_UP(community->npins, NPADS_IN_GPP); + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "failed to get interrupt number\n"); + return irq; + } + + ret = intel_pinctrl_pm_init(pctrl); + if (ret) + return ret; + + pctrl->pctldesc = intel_pinctrl_desc; + pctrl->pctldesc.name = dev_name(&pdev->dev); + pctrl->pctldesc.pins = pctrl->soc->pins; + pctrl->pctldesc.npins = pctrl->soc->npins; + + pctrl->pctldev = pinctrl_register(&pctrl->pctldesc, &pdev->dev, pctrl); + if (!pctrl->pctldev) { + dev_err(&pdev->dev, "failed to register pinctrl driver\n"); + return -ENODEV; + } + + ret = intel_gpio_probe(pctrl, irq); + if (ret) { + pinctrl_unregister(pctrl->pctldev); + return ret; + } + + platform_set_drvdata(pdev, pctrl); + + return 0; +} +EXPORT_SYMBOL_GPL(intel_pinctrl_probe); + +int intel_pinctrl_remove(struct platform_device *pdev) +{ + struct intel_pinctrl *pctrl = platform_get_drvdata(pdev); + + gpiochip_remove(&pctrl->chip); + pinctrl_unregister(pctrl->pctldev); + + return 0; +} +EXPORT_SYMBOL_GPL(intel_pinctrl_remove); + +#ifdef CONFIG_PM_SLEEP +int intel_pinctrl_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct intel_pinctrl *pctrl = platform_get_drvdata(pdev); + struct intel_community_context *communities; + struct intel_pad_context *pads; + int i; + + pads = pctrl->context.pads; + for (i = 0; i < pctrl->soc->npins; i++) { + const struct pinctrl_pin_desc *desc = &pctrl->soc->pins[i]; + u32 val; + + if (!intel_pad_usable(pctrl, desc->number)) + continue; + + val = readl(intel_get_padcfg(pctrl, desc->number, PADCFG0)); + pads[i].padcfg0 = val & ~PADCFG0_GPIORXSTATE; + val = readl(intel_get_padcfg(pctrl, desc->number, PADCFG1)); + pads[i].padcfg1 = val; + } + + communities = pctrl->context.communities; + for (i = 0; i < pctrl->ncommunities; i++) { + struct intel_community *community = &pctrl->communities[i]; + void __iomem *base; + unsigned gpp; + + base = community->regs + community->ie_offset; + for (gpp = 0; gpp < community->ngpps; gpp++) + communities[i].intmask[gpp] = readl(base + gpp * 4); + } + + return 0; +} +EXPORT_SYMBOL_GPL(intel_pinctrl_suspend); + +int intel_pinctrl_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct intel_pinctrl *pctrl = platform_get_drvdata(pdev); + const struct intel_community_context *communities; + const struct intel_pad_context *pads; + int i; + + /* Mask all interrupts */ + intel_gpio_irq_init(pctrl); + + pads = pctrl->context.pads; + for (i = 0; i < pctrl->soc->npins; i++) { + const struct pinctrl_pin_desc *desc = &pctrl->soc->pins[i]; + void __iomem *padcfg; + u32 val; + + if (!intel_pad_usable(pctrl, desc->number)) + continue; + + padcfg = intel_get_padcfg(pctrl, desc->number, PADCFG0); + val = readl(padcfg) & ~PADCFG0_GPIORXSTATE; + if (val != pads[i].padcfg0) { + writel(pads[i].padcfg0, padcfg); + dev_dbg(dev, "restored pin %u padcfg0 %#08x\n", + desc->number, readl(padcfg)); + } + + padcfg = intel_get_padcfg(pctrl, desc->number, PADCFG1); + val = readl(padcfg); + if (val != pads[i].padcfg1) { + writel(pads[i].padcfg1, padcfg); + dev_dbg(dev, "restored pin %u padcfg1 %#08x\n", + desc->number, readl(padcfg)); + } + } + + communities = pctrl->context.communities; + for (i = 0; i < pctrl->ncommunities; i++) { + struct intel_community *community = &pctrl->communities[i]; + void __iomem *base; + unsigned gpp; + + base = community->regs + community->ie_offset; + for (gpp = 0; gpp < community->ngpps; gpp++) { + writel(communities[i].intmask[gpp], base + gpp * 4); + dev_dbg(dev, "restored mask %d/%u %#08x\n", i, gpp, + readl(base + gpp * 4)); + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(intel_pinctrl_resume); +#endif + +MODULE_AUTHOR("Mathias Nyman <mathias.nyman@linux.intel.com>"); +MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); +MODULE_DESCRIPTION("Intel pinctrl/GPIO core driver"); +MODULE_LICENSE("GPL v2"); diff --git a/kernel/drivers/pinctrl/intel/pinctrl-intel.h b/kernel/drivers/pinctrl/intel/pinctrl-intel.h new file mode 100644 index 000000000..4ec8b572a --- /dev/null +++ b/kernel/drivers/pinctrl/intel/pinctrl-intel.h @@ -0,0 +1,128 @@ +/* + * Core pinctrl/GPIO driver for Intel GPIO controllers + * + * Copyright (C) 2015, Intel Corporation + * Authors: Mathias Nyman <mathias.nyman@linux.intel.com> + * Mika Westerberg <mika.westerberg@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef PINCTRL_INTEL_H +#define PINCTRL_INTEL_H + +struct pinctrl_pin_desc; +struct platform_device; +struct device; + +/** + * struct intel_pingroup - Description about group of pins + * @name: Name of the groups + * @pins: All pins in this group + * @npins: Number of pins in this groups + * @mode: Native mode in which the group is muxed out @pins + */ +struct intel_pingroup { + const char *name; + const unsigned *pins; + size_t npins; + unsigned short mode; +}; + +/** + * struct intel_function - Description about a function + * @name: Name of the function + * @groups: An array of groups for this function + * @ngroups: Number of groups in @groups + */ +struct intel_function { + const char *name; + const char * const *groups; + size_t ngroups; +}; + +/** + * struct intel_community - Intel pin community description + * @barno: MMIO BAR number where registers for this community reside + * @padown_offset: Register offset of PAD_OWN register from @regs. If %0 + * then there is no support for owner. + * @padcfglock_offset: Register offset of PADCFGLOCK from @regs. If %0 then + * locking is not supported. + * @hostown_offset: Register offset of HOSTSW_OWN from @regs. If %0 then it + * is assumed that the host owns the pin (rather than + * ACPI). + * @ie_offset: Register offset of GPI_IE from @regs. + * @pin_base: Starting pin of pins in this community + * @npins: Number of pins in this community + * @regs: Community specific common registers (reserved for core driver) + * @pad_regs: Community specific pad registers (reserved for core driver) + * @ngpps: Number of groups (hw groups) in this community (reserved for + * core driver) + */ +struct intel_community { + unsigned barno; + unsigned padown_offset; + unsigned padcfglock_offset; + unsigned hostown_offset; + unsigned ie_offset; + unsigned pin_base; + size_t npins; + void __iomem *regs; + void __iomem *pad_regs; + size_t ngpps; +}; + +#define PIN_GROUP(n, p, m) \ + { \ + .name = (n), \ + .pins = (p), \ + .npins = ARRAY_SIZE((p)), \ + .mode = (m), \ + } + +#define FUNCTION(n, g) \ + { \ + .name = (n), \ + .groups = (g), \ + .ngroups = ARRAY_SIZE((g)), \ + } + +/** + * struct intel_pinctrl_soc_data - Intel pin controller per-SoC configuration + * @uid: ACPI _UID for the probe driver use if needed + * @pins: Array if pins this pinctrl controls + * @npins: Number of pins in the array + * @groups: Array of pin groups + * @ngroups: Number of groups in the array + * @functions: Array of functions + * @nfunctions: Number of functions in the array + * @communities: Array of communities this pinctrl handles + * @ncommunities: Number of communities in the array + * + * The @communities is used as a template by the core driver. It will make + * copy of all communities and fill in rest of the information. + */ +struct intel_pinctrl_soc_data { + const char *uid; + const struct pinctrl_pin_desc *pins; + size_t npins; + const struct intel_pingroup *groups; + size_t ngroups; + const struct intel_function *functions; + size_t nfunctions; + const struct intel_community *communities; + size_t ncommunities; +}; + +int intel_pinctrl_probe(struct platform_device *pdev, + const struct intel_pinctrl_soc_data *soc_data); +int intel_pinctrl_remove(struct platform_device *pdev); + +#ifdef CONFIG_PM_SLEEP +int intel_pinctrl_suspend(struct device *dev); +int intel_pinctrl_resume(struct device *dev); +#endif + +#endif /* PINCTRL_INTEL_H */ diff --git a/kernel/drivers/pinctrl/intel/pinctrl-sunrisepoint.c b/kernel/drivers/pinctrl/intel/pinctrl-sunrisepoint.c new file mode 100644 index 000000000..55d025dc8 --- /dev/null +++ b/kernel/drivers/pinctrl/intel/pinctrl-sunrisepoint.c @@ -0,0 +1,336 @@ +/* + * Intel Sunrisepoint PCH pinctrl/GPIO driver + * + * Copyright (C) 2015, Intel Corporation + * Authors: Mathias Nyman <mathias.nyman@linux.intel.com> + * Mika Westerberg <mika.westerberg@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/acpi.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/pinctrl/pinctrl.h> + +#include "pinctrl-intel.h" + +#define SPT_PAD_OWN 0x020 +#define SPT_PADCFGLOCK 0x0a0 +#define SPT_HOSTSW_OWN 0x0d0 +#define SPT_GPI_IE 0x120 + +#define SPT_COMMUNITY(b, s, e) \ + { \ + .barno = (b), \ + .padown_offset = SPT_PAD_OWN, \ + .padcfglock_offset = SPT_PADCFGLOCK, \ + .hostown_offset = SPT_HOSTSW_OWN, \ + .ie_offset = SPT_GPI_IE, \ + .pin_base = (s), \ + .npins = ((e) - (s) + 1), \ + } + +/* Sunrisepoint-LP */ +static const struct pinctrl_pin_desc sptlp_pins[] = { + /* GPP_A */ + PINCTRL_PIN(0, "RCINB"), + PINCTRL_PIN(1, "LAD_0"), + PINCTRL_PIN(2, "LAD_1"), + PINCTRL_PIN(3, "LAD_2"), + PINCTRL_PIN(4, "LAD_3"), + PINCTRL_PIN(5, "LFRAMEB"), + PINCTRL_PIN(6, "SERIQ"), + PINCTRL_PIN(7, "PIRQAB"), + PINCTRL_PIN(8, "CLKRUNB"), + PINCTRL_PIN(9, "CLKOUT_LPC_0"), + PINCTRL_PIN(10, "CLKOUT_LPC_1"), + PINCTRL_PIN(11, "PMEB"), + PINCTRL_PIN(12, "BM_BUSYB"), + PINCTRL_PIN(13, "SUSWARNB_SUS_PWRDNACK"), + PINCTRL_PIN(14, "SUS_STATB"), + PINCTRL_PIN(15, "SUSACKB"), + PINCTRL_PIN(16, "SD_1P8_SEL"), + PINCTRL_PIN(17, "SD_PWR_EN_B"), + PINCTRL_PIN(18, "ISH_GP_0"), + PINCTRL_PIN(19, "ISH_GP_1"), + PINCTRL_PIN(20, "ISH_GP_2"), + PINCTRL_PIN(21, "ISH_GP_3"), + PINCTRL_PIN(22, "ISH_GP_4"), + PINCTRL_PIN(23, "ISH_GP_5"), + /* GPP_B */ + PINCTRL_PIN(24, "CORE_VID_0"), + PINCTRL_PIN(25, "CORE_VID_1"), + PINCTRL_PIN(26, "VRALERTB"), + PINCTRL_PIN(27, "CPU_GP_2"), + PINCTRL_PIN(28, "CPU_GP_3"), + PINCTRL_PIN(29, "SRCCLKREQB_0"), + PINCTRL_PIN(30, "SRCCLKREQB_1"), + PINCTRL_PIN(31, "SRCCLKREQB_2"), + PINCTRL_PIN(32, "SRCCLKREQB_3"), + PINCTRL_PIN(33, "SRCCLKREQB_4"), + PINCTRL_PIN(34, "SRCCLKREQB_5"), + PINCTRL_PIN(35, "EXT_PWR_GATEB"), + PINCTRL_PIN(36, "SLP_S0B"), + PINCTRL_PIN(37, "PLTRSTB"), + PINCTRL_PIN(38, "SPKR"), + PINCTRL_PIN(39, "GSPI0_CSB"), + PINCTRL_PIN(40, "GSPI0_CLK"), + PINCTRL_PIN(41, "GSPI0_MISO"), + PINCTRL_PIN(42, "GSPI0_MOSI"), + PINCTRL_PIN(43, "GSPI1_CSB"), + PINCTRL_PIN(44, "GSPI1_CLK"), + PINCTRL_PIN(45, "GSPI1_MISO"), + PINCTRL_PIN(46, "GSPI1_MOSI"), + PINCTRL_PIN(47, "SML1ALERTB"), + /* GPP_C */ + PINCTRL_PIN(48, "SMBCLK"), + PINCTRL_PIN(49, "SMBDATA"), + PINCTRL_PIN(50, "SMBALERTB"), + PINCTRL_PIN(51, "SML0CLK"), + PINCTRL_PIN(52, "SML0DATA"), + PINCTRL_PIN(53, "SML0ALERTB"), + PINCTRL_PIN(54, "SML1CLK"), + PINCTRL_PIN(55, "SML1DATA"), + PINCTRL_PIN(56, "UART0_RXD"), + PINCTRL_PIN(57, "UART0_TXD"), + PINCTRL_PIN(58, "UART0_RTSB"), + PINCTRL_PIN(59, "UART0_CTSB"), + PINCTRL_PIN(60, "UART1_RXD"), + PINCTRL_PIN(61, "UART1_TXD"), + PINCTRL_PIN(62, "UART1_RTSB"), + PINCTRL_PIN(63, "UART1_CTSB"), + PINCTRL_PIN(64, "I2C0_SDA"), + PINCTRL_PIN(65, "I2C0_SCL"), + PINCTRL_PIN(66, "I2C1_SDA"), + PINCTRL_PIN(67, "I2C1_SCL"), + PINCTRL_PIN(68, "UART2_RXD"), + PINCTRL_PIN(69, "UART2_TXD"), + PINCTRL_PIN(70, "UART2_RTSB"), + PINCTRL_PIN(71, "UART2_CTSB"), + /* GPP_D */ + PINCTRL_PIN(72, "SPI1_CSB"), + PINCTRL_PIN(73, "SPI1_CLK"), + PINCTRL_PIN(74, "SPI1_MISO_IO_1"), + PINCTRL_PIN(75, "SPI1_MOSI_IO_0"), + PINCTRL_PIN(76, "FLASHTRIG"), + PINCTRL_PIN(77, "ISH_I2C0_SDA"), + PINCTRL_PIN(78, "ISH_I2C0_SCL"), + PINCTRL_PIN(79, "ISH_I2C1_SDA"), + PINCTRL_PIN(80, "ISH_I2C1_SCL"), + PINCTRL_PIN(81, "ISH_SPI_CSB"), + PINCTRL_PIN(82, "ISH_SPI_CLK"), + PINCTRL_PIN(83, "ISH_SPI_MISO"), + PINCTRL_PIN(84, "ISH_SPI_MOSI"), + PINCTRL_PIN(85, "ISH_UART0_RXD"), + PINCTRL_PIN(86, "ISH_UART0_TXD"), + PINCTRL_PIN(87, "ISH_UART0_RTSB"), + PINCTRL_PIN(88, "ISH_UART0_CTSB"), + PINCTRL_PIN(89, "DMIC_CLK_1"), + PINCTRL_PIN(90, "DMIC_DATA_1"), + PINCTRL_PIN(91, "DMIC_CLK_0"), + PINCTRL_PIN(92, "DMIC_DATA_0"), + PINCTRL_PIN(93, "SPI1_IO_2"), + PINCTRL_PIN(94, "SPI1_IO_3"), + PINCTRL_PIN(95, "SSP_MCLK"), + /* GPP_E */ + PINCTRL_PIN(96, "SATAXPCIE_0"), + PINCTRL_PIN(97, "SATAXPCIE_1"), + PINCTRL_PIN(98, "SATAXPCIE_2"), + PINCTRL_PIN(99, "CPU_GP_0"), + PINCTRL_PIN(100, "SATA_DEVSLP_0"), + PINCTRL_PIN(101, "SATA_DEVSLP_1"), + PINCTRL_PIN(102, "SATA_DEVSLP_2"), + PINCTRL_PIN(103, "CPU_GP_1"), + PINCTRL_PIN(104, "SATA_LEDB"), + PINCTRL_PIN(105, "USB2_OCB_0"), + PINCTRL_PIN(106, "USB2_OCB_1"), + PINCTRL_PIN(107, "USB2_OCB_2"), + PINCTRL_PIN(108, "USB2_OCB_3"), + PINCTRL_PIN(109, "DDSP_HPD_0"), + PINCTRL_PIN(110, "DDSP_HPD_1"), + PINCTRL_PIN(111, "DDSP_HPD_2"), + PINCTRL_PIN(112, "DDSP_HPD_3"), + PINCTRL_PIN(113, "EDP_HPD"), + PINCTRL_PIN(114, "DDPB_CTRLCLK"), + PINCTRL_PIN(115, "DDPB_CTRLDATA"), + PINCTRL_PIN(116, "DDPC_CTRLCLK"), + PINCTRL_PIN(117, "DDPC_CTRLDATA"), + PINCTRL_PIN(118, "DDPD_CTRLCLK"), + PINCTRL_PIN(119, "DDPD_CTRLDATA"), + /* GPP_F */ + PINCTRL_PIN(120, "SSP2_SCLK"), + PINCTRL_PIN(121, "SSP2_SFRM"), + PINCTRL_PIN(122, "SSP2_TXD"), + PINCTRL_PIN(123, "SSP2_RXD"), + PINCTRL_PIN(124, "I2C2_SDA"), + PINCTRL_PIN(125, "I2C2_SCL"), + PINCTRL_PIN(126, "I2C3_SDA"), + PINCTRL_PIN(127, "I2C3_SCL"), + PINCTRL_PIN(128, "I2C4_SDA"), + PINCTRL_PIN(129, "I2C4_SCL"), + PINCTRL_PIN(130, "I2C5_SDA"), + PINCTRL_PIN(131, "I2C5_SCL"), + PINCTRL_PIN(132, "EMMC_CMD"), + PINCTRL_PIN(133, "EMMC_DATA_0"), + PINCTRL_PIN(134, "EMMC_DATA_1"), + PINCTRL_PIN(135, "EMMC_DATA_2"), + PINCTRL_PIN(136, "EMMC_DATA_3"), + PINCTRL_PIN(137, "EMMC_DATA_4"), + PINCTRL_PIN(138, "EMMC_DATA_5"), + PINCTRL_PIN(139, "EMMC_DATA_6"), + PINCTRL_PIN(140, "EMMC_DATA_7"), + PINCTRL_PIN(141, "EMMC_RCLK"), + PINCTRL_PIN(142, "EMMC_CLK"), + PINCTRL_PIN(143, "GPP_F_23"), + /* GPP_G */ + PINCTRL_PIN(144, "SD_CMD"), + PINCTRL_PIN(145, "SD_DATA_0"), + PINCTRL_PIN(146, "SD_DATA_1"), + PINCTRL_PIN(147, "SD_DATA_2"), + PINCTRL_PIN(148, "SD_DATA_3"), + PINCTRL_PIN(149, "SD_CDB"), + PINCTRL_PIN(150, "SD_CLK"), + PINCTRL_PIN(151, "SD_WP"), +}; + +static const unsigned sptlp_spi0_pins[] = { 39, 40, 41, 42 }; +static const unsigned sptlp_spi1_pins[] = { 43, 44, 45, 46 }; +static const unsigned sptlp_uart0_pins[] = { 56, 57, 58, 59 }; +static const unsigned sptlp_uart1_pins[] = { 60, 61, 62, 63 }; +static const unsigned sptlp_uart2_pins[] = { 68, 69, 71, 71 }; +static const unsigned sptlp_i2c0_pins[] = { 64, 65 }; +static const unsigned sptlp_i2c1_pins[] = { 66, 67 }; +static const unsigned sptlp_i2c2_pins[] = { 124, 125 }; +static const unsigned sptlp_i2c3_pins[] = { 126, 127 }; +static const unsigned sptlp_i2c4_pins[] = { 128, 129 }; +static const unsigned sptlp_i2c4b_pins[] = { 85, 86 }; +static const unsigned sptlp_i2c5_pins[] = { 130, 131 }; +static const unsigned sptlp_ssp2_pins[] = { 120, 121, 122, 123 }; +static const unsigned sptlp_emmc_pins[] = { + 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, +}; +static const unsigned sptlp_sd_pins[] = { + 144, 145, 146, 147, 148, 149, 150, 151, +}; + +static const struct intel_pingroup sptlp_groups[] = { + PIN_GROUP("spi0_grp", sptlp_spi0_pins, 1), + PIN_GROUP("spi1_grp", sptlp_spi1_pins, 1), + PIN_GROUP("uart0_grp", sptlp_uart0_pins, 1), + PIN_GROUP("uart1_grp", sptlp_uart1_pins, 1), + PIN_GROUP("uart2_grp", sptlp_uart2_pins, 1), + PIN_GROUP("i2c0_grp", sptlp_i2c0_pins, 1), + PIN_GROUP("i2c1_grp", sptlp_i2c1_pins, 1), + PIN_GROUP("i2c2_grp", sptlp_i2c2_pins, 1), + PIN_GROUP("i2c3_grp", sptlp_i2c3_pins, 1), + PIN_GROUP("i2c4_grp", sptlp_i2c4_pins, 1), + PIN_GROUP("i2c4b_grp", sptlp_i2c4b_pins, 3), + PIN_GROUP("i2c5_grp", sptlp_i2c5_pins, 1), + PIN_GROUP("ssp2_grp", sptlp_ssp2_pins, 1), + PIN_GROUP("emmc_grp", sptlp_emmc_pins, 1), + PIN_GROUP("sd_grp", sptlp_sd_pins, 1), +}; + +static const char * const sptlp_spi0_groups[] = { "spi0_grp" }; +static const char * const sptlp_spi1_groups[] = { "spi0_grp" }; +static const char * const sptlp_uart0_groups[] = { "uart0_grp" }; +static const char * const sptlp_uart1_groups[] = { "uart1_grp" }; +static const char * const sptlp_uart2_groups[] = { "uart2_grp" }; +static const char * const sptlp_i2c0_groups[] = { "i2c0_grp" }; +static const char * const sptlp_i2c1_groups[] = { "i2c1_grp" }; +static const char * const sptlp_i2c2_groups[] = { "i2c2_grp" }; +static const char * const sptlp_i2c3_groups[] = { "i2c3_grp" }; +static const char * const sptlp_i2c4_groups[] = { "i2c4_grp", "i2c4b_grp" }; +static const char * const sptlp_i2c5_groups[] = { "i2c5_grp" }; +static const char * const sptlp_ssp2_groups[] = { "ssp2_grp" }; +static const char * const sptlp_emmc_groups[] = { "emmc_grp" }; +static const char * const sptlp_sd_groups[] = { "sd_grp" }; + +static const struct intel_function sptlp_functions[] = { + FUNCTION("spi0", sptlp_spi0_groups), + FUNCTION("spi1", sptlp_spi1_groups), + FUNCTION("uart0", sptlp_uart0_groups), + FUNCTION("uart1", sptlp_uart1_groups), + FUNCTION("uart2", sptlp_uart2_groups), + FUNCTION("i2c0", sptlp_i2c0_groups), + FUNCTION("i2c1", sptlp_i2c1_groups), + FUNCTION("i2c2", sptlp_i2c2_groups), + FUNCTION("i2c3", sptlp_i2c3_groups), + FUNCTION("i2c4", sptlp_i2c4_groups), + FUNCTION("i2c5", sptlp_i2c5_groups), + FUNCTION("ssp2", sptlp_ssp2_groups), + FUNCTION("emmc", sptlp_emmc_groups), + FUNCTION("sd", sptlp_sd_groups), +}; + +static const struct intel_community sptlp_communities[] = { + SPT_COMMUNITY(0, 0, 47), + SPT_COMMUNITY(1, 48, 119), + SPT_COMMUNITY(2, 120, 151), +}; + +static const struct intel_pinctrl_soc_data sptlp_soc_data = { + .pins = sptlp_pins, + .npins = ARRAY_SIZE(sptlp_pins), + .groups = sptlp_groups, + .ngroups = ARRAY_SIZE(sptlp_groups), + .functions = sptlp_functions, + .nfunctions = ARRAY_SIZE(sptlp_functions), + .communities = sptlp_communities, + .ncommunities = ARRAY_SIZE(sptlp_communities), +}; + +static const struct acpi_device_id spt_pinctrl_acpi_match[] = { + { "INT344B", (kernel_ulong_t)&sptlp_soc_data }, + { } +}; +MODULE_DEVICE_TABLE(acpi, spt_pinctrl_acpi_match); + +static int spt_pinctrl_probe(struct platform_device *pdev) +{ + const struct intel_pinctrl_soc_data *soc_data; + const struct acpi_device_id *id; + + id = acpi_match_device(spt_pinctrl_acpi_match, &pdev->dev); + if (!id || !id->driver_data) + return -ENODEV; + + soc_data = (const struct intel_pinctrl_soc_data *)id->driver_data; + return intel_pinctrl_probe(pdev, soc_data); +} + +static const struct dev_pm_ops spt_pinctrl_pm_ops = { + SET_LATE_SYSTEM_SLEEP_PM_OPS(intel_pinctrl_suspend, + intel_pinctrl_resume) +}; + +static struct platform_driver spt_pinctrl_driver = { + .probe = spt_pinctrl_probe, + .remove = intel_pinctrl_remove, + .driver = { + .name = "sunrisepoint-pinctrl", + .acpi_match_table = spt_pinctrl_acpi_match, + .pm = &spt_pinctrl_pm_ops, + }, +}; + +static int __init spt_pinctrl_init(void) +{ + return platform_driver_register(&spt_pinctrl_driver); +} +subsys_initcall(spt_pinctrl_init); + +static void __exit spt_pinctrl_exit(void) +{ + platform_driver_unregister(&spt_pinctrl_driver); +} +module_exit(spt_pinctrl_exit); + +MODULE_AUTHOR("Mathias Nyman <mathias.nyman@linux.intel.com>"); +MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); +MODULE_DESCRIPTION("Intel Sunrisepoint PCH pinctrl/GPIO driver"); +MODULE_LICENSE("GPL v2"); |