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-rw-r--r--kernel/drivers/pinctrl/intel/Kconfig44
-rw-r--r--kernel/drivers/pinctrl/intel/Makefile6
-rw-r--r--kernel/drivers/pinctrl/intel/pinctrl-baytrail.c746
-rw-r--r--kernel/drivers/pinctrl/intel/pinctrl-cherryview.c1680
-rw-r--r--kernel/drivers/pinctrl/intel/pinctrl-intel.c1149
-rw-r--r--kernel/drivers/pinctrl/intel/pinctrl-intel.h128
-rw-r--r--kernel/drivers/pinctrl/intel/pinctrl-sunrisepoint.c336
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");