diff options
| -rw-r--r-- | drivers/pinctrl/intel/Kconfig | 17 | ||||
| -rw-r--r-- | drivers/pinctrl/intel/Makefile | 2 | ||||
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.c | 1149 | ||||
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.h | 128 | ||||
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-sunrisepoint.c | 336 |
5 files changed, 1632 insertions, 0 deletions
diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig index b801d869e91c..fe5e07db0a95 100644 --- a/drivers/pinctrl/intel/Kconfig +++ b/drivers/pinctrl/intel/Kconfig @@ -25,3 +25,20 @@ config PINCTRL_CHERRYVIEW 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/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile index 4c210e4139e2..fee756e1255b 100644 --- a/drivers/pinctrl/intel/Makefile +++ b/drivers/pinctrl/intel/Makefile @@ -2,3 +2,5 @@ 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/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c new file mode 100644 index 000000000000..00768e53deec --- /dev/null +++ b/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/drivers/pinctrl/intel/pinctrl-intel.h b/drivers/pinctrl/intel/pinctrl-intel.h new file mode 100644 index 000000000000..4ec8b572a288 --- /dev/null +++ b/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/drivers/pinctrl/intel/pinctrl-sunrisepoint.c b/drivers/pinctrl/intel/pinctrl-sunrisepoint.c new file mode 100644 index 000000000000..55d025dc89e8 --- /dev/null +++ b/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"); |