/*
* Cherryview/Braswell pinctrl driver
*
- * Copyright (C) 2014, Intel Corporation
+ * Copyright (C) 2014, 2020 Intel Corporation
* Author: Mika Westerberg <mika.westerberg@linux.intel.com>
*
* This driver is based on the original Cherryview GPIO driver by
#define CHV_PADCTRL1_INTWAKECFG_BOTH 3
#define CHV_PADCTRL1_INTWAKECFG_LEVEL 4
-/**
- * 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
- * @gpps: Pad groups
- * @ngpps: Number of pad groups in this community
- * @nirqs: Total number of IRQs this community can generate
- * @acpi_space_id: An address space ID for ACPI OpRegion handler
- */
-struct chv_community {
- 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_padgroup *gpps;
- size_t ngpps;
- size_t nirqs;
- acpi_adr_space_type acpi_space_id;
-};
-
-struct chv_pin_context {
+struct intel_pad_context {
u32 padctrl0;
u32 padctrl1;
};
* @pctldev: Pointer to the pin controller device
* @chip: GPIO chip in this pin controller
* @irqchip: IRQ chip in this pin controller
- * @regs: MMIO registers
+ * @soc: Community 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
* @irq: Our parent irq
- * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO
- * offset (in GPIO number space)
- * @community: Community this pinctrl instance represents
+ * @intr_lines: Mapping between 16 HW interrupt wires and GPIO offset (in GPIO number space)
* @saved_intmask: Interrupt mask saved for system sleep
- * @saved_pin_context: Pointer to a context of the pins saved for system sleep
*
* The first group in @groups is expected to contain all pins that can be
* used as GPIOs.
struct pinctrl_dev *pctldev;
struct gpio_chip chip;
struct irq_chip irqchip;
- void __iomem *regs;
- unsigned int irq;
+ const struct intel_pinctrl_soc_data *soc;
+ struct intel_community *communities;
+ size_t ncommunities;
+ struct intel_pinctrl_context context;
+ int irq;
+
unsigned int intr_lines[16];
- const struct chv_community *community;
u32 saved_intmask;
- struct chv_pin_context *saved_pin_context;
};
#define PINMODE_INVERT_OE BIT(15)
#define PINMODE(m, i) ((m) | ((i) * PINMODE_INVERT_OE))
-#define CHV_GPP(start, end) \
+#define CHV_GPP(start, end) \
{ \
.base = (start), \
.size = (end) - (start) + 1, \
}
+#define CHV_COMMUNITY(g, i, a) \
+ { \
+ .gpps = (g), \
+ .ngpps = ARRAY_SIZE(g), \
+ .nirqs = (i), \
+ .acpi_space_id = (a), \
+ }
+
static const struct pinctrl_pin_desc southwest_pins[] = {
PINCTRL_PIN(0, "FST_SPI_D2"),
PINCTRL_PIN(1, "FST_SPI_D0"),
CHV_GPP(90, 97),
};
-static const struct chv_community southwest_community = {
+/*
+ * Southwest community can generate GPIO interrupts only for the first 8
+ * interrupts. The upper half (8-15) can only be used to trigger GPEs.
+ */
+static const struct intel_community southwest_communities[] = {
+ CHV_COMMUNITY(southwest_gpps, 8, 0x91),
+};
+
+static const struct intel_pinctrl_soc_data southwest_soc_data = {
.uid = "1",
.pins = southwest_pins,
.npins = ARRAY_SIZE(southwest_pins),
.ngroups = ARRAY_SIZE(southwest_groups),
.functions = southwest_functions,
.nfunctions = ARRAY_SIZE(southwest_functions),
- .gpps = southwest_gpps,
- .ngpps = ARRAY_SIZE(southwest_gpps),
- /*
- * Southwest community can generate GPIO interrupts only for the
- * first 8 interrupts. The upper half (8-15) can only be used to
- * trigger GPEs.
- */
- .nirqs = 8,
- .acpi_space_id = 0x91,
+ .communities = southwest_communities,
+ .ncommunities = ARRAY_SIZE(southwest_communities),
};
static const struct pinctrl_pin_desc north_pins[] = {
CHV_GPP(60, 72),
};
-static const struct chv_community north_community = {
+/*
+ * North community can generate GPIO interrupts only for the first 8
+ * interrupts. The upper half (8-15) can only be used to trigger GPEs.
+ */
+static const struct intel_community north_communities[] = {
+ CHV_COMMUNITY(north_gpps, 8, 0x92),
+};
+
+static const struct intel_pinctrl_soc_data north_soc_data = {
.uid = "2",
.pins = north_pins,
.npins = ARRAY_SIZE(north_pins),
- .gpps = north_gpps,
- .ngpps = ARRAY_SIZE(north_gpps),
- /*
- * North community can generate GPIO interrupts only for the first
- * 8 interrupts. The upper half (8-15) can only be used to trigger
- * GPEs.
- */
- .nirqs = 8,
- .acpi_space_id = 0x92,
+ .communities = north_communities,
+ .ncommunities = ARRAY_SIZE(north_communities),
};
static const struct pinctrl_pin_desc east_pins[] = {
CHV_GPP(15, 26),
};
-static const struct chv_community east_community = {
+static const struct intel_community east_communities[] = {
+ CHV_COMMUNITY(east_gpps, 16, 0x93),
+};
+
+static const struct intel_pinctrl_soc_data east_soc_data = {
.uid = "3",
.pins = east_pins,
.npins = ARRAY_SIZE(east_pins),
- .gpps = east_gpps,
- .ngpps = ARRAY_SIZE(east_gpps),
- .nirqs = 16,
- .acpi_space_id = 0x93,
+ .communities = east_communities,
+ .ncommunities = ARRAY_SIZE(east_communities),
};
static const struct pinctrl_pin_desc southeast_pins[] = {
CHV_GPP(75, 85),
};
-static const struct chv_community southeast_community = {
+static const struct intel_community southeast_communities[] = {
+ CHV_COMMUNITY(southeast_gpps, 16, 0x94),
+};
+
+static const struct intel_pinctrl_soc_data southeast_soc_data = {
.uid = "4",
.pins = southeast_pins,
.npins = ARRAY_SIZE(southeast_pins),
.ngroups = ARRAY_SIZE(southeast_groups),
.functions = southeast_functions,
.nfunctions = ARRAY_SIZE(southeast_functions),
- .gpps = southeast_gpps,
- .ngpps = ARRAY_SIZE(southeast_gpps),
- .nirqs = 16,
- .acpi_space_id = 0x94,
+ .communities = southeast_communities,
+ .ncommunities = ARRAY_SIZE(southeast_communities),
};
-static const struct chv_community *chv_communities[] = {
- &southwest_community,
- &north_community,
- &east_community,
- &southeast_community,
+static const struct intel_pinctrl_soc_data *chv_soc_data[] = {
+ &southwest_soc_data,
+ &north_soc_data,
+ &east_soc_data,
+ &southeast_soc_data,
+ NULL
};
/*
static u32 chv_pctrl_readl(struct chv_pinctrl *pctrl, unsigned int offset)
{
- return readl(pctrl->regs + offset);
+ const struct intel_community *community = &pctrl->communities[0];
+
+ return readl(community->regs + offset);
}
static void chv_pctrl_writel(struct chv_pinctrl *pctrl, unsigned int offset, u32 value)
{
- void __iomem *reg = pctrl->regs + offset;
+ const struct intel_community *community = &pctrl->communities[0];
+ void __iomem *reg = community->regs + offset;
/* Write and simple read back to confirm the bus transferring done */
writel(value, reg);
static void __iomem *chv_padreg(struct chv_pinctrl *pctrl, unsigned int offset,
unsigned int reg)
{
+ const struct intel_community *community = &pctrl->communities[0];
unsigned int family_no = offset / MAX_FAMILY_PAD_GPIO_NO;
unsigned int pad_no = offset % MAX_FAMILY_PAD_GPIO_NO;
- offset = FAMILY_PAD_REGS_OFF + FAMILY_PAD_REGS_SIZE * family_no +
- GPIO_REGS_SIZE * pad_no;
+ offset = FAMILY_PAD_REGS_SIZE * family_no + GPIO_REGS_SIZE * pad_no;
- return pctrl->regs + offset + reg;
+ return community->pad_regs + offset + reg;
}
static u32 chv_readl(struct chv_pinctrl *pctrl, unsigned int pin, unsigned int offset)
{
struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
- return pctrl->community->ngroups;
+ return pctrl->soc->ngroups;
}
static const char *chv_get_group_name(struct pinctrl_dev *pctldev,
{
struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
- return pctrl->community->groups[group].name;
+ return pctrl->soc->groups[group].name;
}
static int chv_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group,
{
struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
- *pins = pctrl->community->groups[group].pins;
- *npins = pctrl->community->groups[group].npins;
+ *pins = pctrl->soc->groups[group].pins;
+ *npins = pctrl->soc->groups[group].npins;
return 0;
}
{
struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
- return pctrl->community->nfunctions;
+ return pctrl->soc->nfunctions;
}
static const char *chv_get_function_name(struct pinctrl_dev *pctldev,
{
struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
- return pctrl->community->functions[function].name;
+ return pctrl->soc->functions[function].name;
}
static int chv_get_function_groups(struct pinctrl_dev *pctldev,
{
struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
- *groups = pctrl->community->functions[function].groups;
- *ngroups = pctrl->community->functions[function].ngroups;
+ *groups = pctrl->soc->functions[function].groups;
+ *ngroups = pctrl->soc->functions[function].ngroups;
return 0;
}
unsigned long flags;
int i;
- grp = &pctrl->community->groups[group];
+ grp = &pctrl->soc->groups[group];
raw_spin_lock_irqsave(&chv_lock, flags);
{
struct gpio_chip *gc = irq_desc_get_handler_data(desc);
struct chv_pinctrl *pctrl = gpiochip_get_data(gc);
+ const struct intel_community *community = &pctrl->communities[0];
struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned long pending;
unsigned long flags;
pending = chv_pctrl_readl(pctrl, CHV_INTSTAT);
raw_spin_unlock_irqrestore(&chv_lock, flags);
- for_each_set_bit(intr_line, &pending, pctrl->community->nirqs) {
+ for_each_set_bit(intr_line, &pending, community->nirqs) {
unsigned int irq, offset;
offset = pctrl->intr_lines[intr_line];
unsigned int ngpios)
{
struct chv_pinctrl *pctrl = gpiochip_get_data(chip);
- const struct chv_community *community = pctrl->community;
+ const struct intel_community *community = &pctrl->communities[0];
int i;
/* Do not add GPIOs that can only generate GPEs to the IRQ domain */
- for (i = 0; i < community->npins; i++) {
+ for (i = 0; i < pctrl->soc->npins; i++) {
const struct pinctrl_pin_desc *desc;
u32 intsel;
- desc = &community->pins[i];
+ desc = &pctrl->soc->pins[i];
intsel = chv_readl(pctrl, desc->number, CHV_PADCTRL0);
intsel &= CHV_PADCTRL0_INTSEL_MASK;
static int chv_gpio_irq_init_hw(struct gpio_chip *chip)
{
struct chv_pinctrl *pctrl = gpiochip_get_data(chip);
+ const struct intel_community *community = &pctrl->communities[0];
/*
* The same set of machines in chv_no_valid_mask[] have incorrectly
* Mask all interrupts the community is able to generate
* but leave the ones that can only generate GPEs unmasked.
*/
- chv_pctrl_writel(pctrl, CHV_INTMASK, GENMASK(31, pctrl->community->nirqs));
+ chv_pctrl_writel(pctrl, CHV_INTMASK, GENMASK(31, community->nirqs));
}
/* Clear all interrupts */
static int chv_gpio_add_pin_ranges(struct gpio_chip *chip)
{
struct chv_pinctrl *pctrl = gpiochip_get_data(chip);
- const struct chv_community *community = pctrl->community;
+ const struct intel_community *community = &pctrl->communities[0];
const struct intel_padgroup *gpp;
int ret, i;
static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq)
{
+ const struct intel_community *community = &pctrl->communities[0];
const struct intel_padgroup *gpp;
struct gpio_chip *chip = &pctrl->chip;
bool need_valid_mask = !dmi_check_system(chv_no_valid_mask);
- const struct chv_community *community = pctrl->community;
int ret, i, irq_base;
*chip = chv_gpio_chip;
- chip->ngpio = community->pins[community->npins - 1].number + 1;
+ chip->ngpio = pctrl->soc->pins[pctrl->soc->npins - 1].number + 1;
chip->label = dev_name(pctrl->dev);
chip->add_pin_ranges = chv_gpio_add_pin_ranges;
chip->parent = pctrl->dev;
chip->irq.init_valid_mask = chv_init_irq_valid_mask;
} else {
irq_base = devm_irq_alloc_descs(pctrl->dev, -1, 0,
- community->npins, NUMA_NO_NODE);
+ pctrl->soc->npins, NUMA_NO_NODE);
if (irq_base < 0) {
dev_err(pctrl->dev, "Failed to allocate IRQ numbers\n");
return irq_base;
static int chv_pinctrl_probe(struct platform_device *pdev)
{
+ const struct intel_pinctrl_soc_data *soc_data = NULL;
+ const struct intel_pinctrl_soc_data **soc_table;
+ struct intel_community *community;
+ struct device *dev = &pdev->dev;
struct chv_pinctrl *pctrl;
struct acpi_device *adev;
acpi_status status;
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];
+ soc_table = (const struct intel_pinctrl_soc_data **)device_get_match_data(dev);
+ for (i = 0; soc_table[i]; i++) {
+ if (!strcmp(adev->pnp.unique_id, soc_table[i]->uid)) {
+ soc_data = soc_table[i];
break;
}
- if (i == ARRAY_SIZE(chv_communities))
+ }
+ if (!soc_data)
return -ENODEV;
+ pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL);
+ if (!pctrl)
+ return -ENOMEM;
+
pctrl->dev = &pdev->dev;
+ pctrl->soc = soc_data;
+
+ pctrl->ncommunities = pctrl->soc->ncommunities;
+ pctrl->communities = devm_kmemdup(dev, pctrl->soc->communities,
+ pctrl->ncommunities * sizeof(*pctrl->communities),
+ GFP_KERNEL);
+ if (!pctrl->communities)
+ return -ENOMEM;
+
+ community = &pctrl->communities[0];
+ community->regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(community->regs))
+ return PTR_ERR(community->regs);
+
+ community->pad_regs = community->regs + FAMILY_PAD_REGS_OFF;
#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)
+ pctrl->context.pads = devm_kcalloc(dev, pctrl->soc->npins,
+ sizeof(*pctrl->context.pads),
+ GFP_KERNEL);
+ if (!pctrl->context.pads)
return -ENOMEM;
#endif
- pctrl->regs = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(pctrl->regs))
- return PTR_ERR(pctrl->regs);
-
irq = platform_get_irq(pdev, 0);
if (irq < 0)
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->pctldesc.pins = pctrl->soc->pins;
+ pctrl->pctldesc.npins = pctrl->soc->npins;
pctrl->pctldev = devm_pinctrl_register(&pdev->dev, &pctrl->pctldesc,
pctrl);
return ret;
status = acpi_install_address_space_handler(adev->handle,
- pctrl->community->acpi_space_id,
+ community->acpi_space_id,
chv_pinctrl_mmio_access_handler,
NULL, pctrl);
if (ACPI_FAILURE(status))
static int chv_pinctrl_remove(struct platform_device *pdev)
{
struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
+ const struct intel_community *community = &pctrl->communities[0];
acpi_remove_address_space_handler(ACPI_COMPANION(&pdev->dev),
- pctrl->community->acpi_space_id,
+ community->acpi_space_id,
chv_pinctrl_mmio_access_handler);
return 0;
pctrl->saved_intmask = chv_pctrl_readl(pctrl, CHV_INTMASK);
- for (i = 0; i < pctrl->community->npins; i++) {
+ for (i = 0; i < pctrl->soc->npins; i++) {
const struct pinctrl_pin_desc *desc;
- struct chv_pin_context *ctx;
+ struct intel_pad_context *ctx = &pctrl->context.pads[i];
- desc = &pctrl->community->pins[i];
+ desc = &pctrl->soc->pins[i];
if (chv_pad_locked(pctrl, desc->number))
continue;
- ctx = &pctrl->saved_pin_context[i];
-
ctx->padctrl0 = chv_readl(pctrl, desc->number, CHV_PADCTRL0);
ctx->padctrl0 &= ~CHV_PADCTRL0_GPIORXSTATE;
*/
chv_pctrl_writel(pctrl, CHV_INTMASK, 0x0000);
- for (i = 0; i < pctrl->community->npins; i++) {
+ for (i = 0; i < pctrl->soc->npins; i++) {
const struct pinctrl_pin_desc *desc;
- const struct chv_pin_context *ctx;
+ struct intel_pad_context *ctx = &pctrl->context.pads[i];
u32 val;
- desc = &pctrl->community->pins[i];
+ desc = &pctrl->soc->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 */
val = chv_readl(pctrl, desc->number, CHV_PADCTRL0);
val &= ~CHV_PADCTRL0_GPIORXSTATE;
};
static const struct acpi_device_id chv_pinctrl_acpi_match[] = {
- { "INT33FF" },
+ { "INT33FF", (kernel_ulong_t)chv_soc_data },
{ }
};
MODULE_DEVICE_TABLE(acpi, chv_pinctrl_acpi_match);
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