* Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
*/
-#include <linux/bits.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
+#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/seq_file.h>
+#include <linux/types.h>
-#include <linux/pinctrl/pinconf-generic.h>
-#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinctrl.h>
-#include <linux/pinctrl/pinmux.h>
#include "pinctrl-intel.h"
-
-#define MRFLD_FAMILY_NR 64
-#define MRFLD_FAMILY_LEN 0x400
-
-#define SLEW_OFFSET 0x000
-#define BUFCFG_OFFSET 0x100
-#define MISC_OFFSET 0x300
-
-#define BUFCFG_PINMODE_SHIFT 0
-#define BUFCFG_PINMODE_MASK GENMASK(2, 0)
-#define BUFCFG_PINMODE_GPIO 0
-#define BUFCFG_PUPD_VAL_SHIFT 4
-#define BUFCFG_PUPD_VAL_MASK GENMASK(5, 4)
-#define BUFCFG_PUPD_VAL_2K 0
-#define BUFCFG_PUPD_VAL_20K 1
-#define BUFCFG_PUPD_VAL_50K 2
-#define BUFCFG_PUPD_VAL_910 3
-#define BUFCFG_PU_EN BIT(8)
-#define BUFCFG_PD_EN BIT(9)
-#define BUFCFG_Px_EN_MASK GENMASK(9, 8)
-#define BUFCFG_SLEWSEL BIT(10)
-#define BUFCFG_OVINEN BIT(12)
-#define BUFCFG_OVINEN_EN BIT(13)
-#define BUFCFG_OVINEN_MASK GENMASK(13, 12)
-#define BUFCFG_OVOUTEN BIT(14)
-#define BUFCFG_OVOUTEN_EN BIT(15)
-#define BUFCFG_OVOUTEN_MASK GENMASK(15, 14)
-#define BUFCFG_INDATAOV_VAL BIT(16)
-#define BUFCFG_INDATAOV_EN BIT(17)
-#define BUFCFG_INDATAOV_MASK GENMASK(17, 16)
-#define BUFCFG_OUTDATAOV_VAL BIT(18)
-#define BUFCFG_OUTDATAOV_EN BIT(19)
-#define BUFCFG_OUTDATAOV_MASK GENMASK(19, 18)
-#define BUFCFG_OD_EN BIT(21)
-
-/**
- * struct mrfld_family - Intel pin family description
- * @barno: MMIO BAR number where registers for this family reside
- * @pin_base: Starting pin of pins in this family
- * @npins: Number of pins in this family
- * @protected: True if family is protected by access
- * @regs: family specific common registers
- */
-struct mrfld_family {
- unsigned int barno;
- unsigned int pin_base;
- size_t npins;
- bool protected;
- void __iomem *regs;
-};
-
-#define MRFLD_FAMILY(b, s, e) \
- { \
- .barno = (b), \
- .pin_base = (s), \
- .npins = (e) - (s) + 1, \
- }
-
-#define MRFLD_FAMILY_PROTECTED(b, s, e) \
- { \
- .barno = (b), \
- .pin_base = (s), \
- .npins = (e) - (s) + 1, \
- .protected = true, \
- }
+#include "pinctrl-tangier.h"
static const struct pinctrl_pin_desc mrfld_pins[] = {
/* Family 0: OCP2SSC (0 pins) */
FUNCTION("pwm3", mrfld_pwm3_groups),
};
-static const struct mrfld_family mrfld_families[] = {
- MRFLD_FAMILY(1, 0, 12),
- MRFLD_FAMILY(2, 13, 36),
- MRFLD_FAMILY(3, 37, 56),
- MRFLD_FAMILY(4, 57, 64),
- MRFLD_FAMILY(5, 65, 78),
- MRFLD_FAMILY(6, 79, 100),
- MRFLD_FAMILY_PROTECTED(7, 101, 114),
- MRFLD_FAMILY(8, 115, 126),
- MRFLD_FAMILY(9, 127, 145),
- MRFLD_FAMILY(10, 146, 157),
- MRFLD_FAMILY(11, 158, 179),
- MRFLD_FAMILY_PROTECTED(12, 180, 194),
- MRFLD_FAMILY(13, 195, 214),
- MRFLD_FAMILY(14, 215, 227),
- MRFLD_FAMILY(15, 228, 232),
+static const struct tng_family mrfld_families[] = {
+ TNG_FAMILY(1, 0, 12),
+ TNG_FAMILY(2, 13, 36),
+ TNG_FAMILY(3, 37, 56),
+ TNG_FAMILY(4, 57, 64),
+ TNG_FAMILY(5, 65, 78),
+ TNG_FAMILY(6, 79, 100),
+ TNG_FAMILY_PROTECTED(7, 101, 114),
+ TNG_FAMILY(8, 115, 126),
+ TNG_FAMILY(9, 127, 145),
+ TNG_FAMILY(10, 146, 157),
+ TNG_FAMILY(11, 158, 179),
+ TNG_FAMILY_PROTECTED(12, 180, 194),
+ TNG_FAMILY(13, 195, 214),
+ TNG_FAMILY(14, 215, 227),
+ TNG_FAMILY(15, 228, 232),
};
-/**
- * struct mrfld_pinctrl - Intel Merrifield 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
- * @families: Array of families this pinctrl handles
- * @nfamilies: Number of families in the array
- * @functions: Array of functions
- * @nfunctions: Number of functions in the array
- * @groups: Array of pin groups
- * @ngroups: Number of groups in the array
- * @pins: Array of pins this pinctrl controls
- * @npins: Number of pins in the array
- */
-struct mrfld_pinctrl {
- struct device *dev;
- raw_spinlock_t lock;
- struct pinctrl_desc pctldesc;
- struct pinctrl_dev *pctldev;
-
- /* Pin controller configuration */
- const struct mrfld_family *families;
- size_t nfamilies;
- const struct intel_function *functions;
- size_t nfunctions;
- const struct intel_pingroup *groups;
- size_t ngroups;
- const struct pinctrl_pin_desc *pins;
- size_t npins;
-};
-
-#define pin_to_bufno(f, p) ((p) - (f)->pin_base)
-
-static const struct mrfld_family *mrfld_get_family(struct mrfld_pinctrl *mp,
- unsigned int pin)
-{
- const struct mrfld_family *family;
- unsigned int i;
-
- for (i = 0; i < mp->nfamilies; i++) {
- family = &mp->families[i];
- if (pin >= family->pin_base &&
- pin < family->pin_base + family->npins)
- return family;
- }
-
- dev_warn(mp->dev, "failed to find family for pin %u\n", pin);
- return NULL;
-}
-
-static bool mrfld_buf_available(struct mrfld_pinctrl *mp, unsigned int pin)
-{
- const struct mrfld_family *family;
-
- family = mrfld_get_family(mp, pin);
- if (!family)
- return false;
-
- return !family->protected;
-}
-
-static void __iomem *mrfld_get_bufcfg(struct mrfld_pinctrl *mp, unsigned int pin)
-{
- const struct mrfld_family *family;
- unsigned int bufno;
-
- family = mrfld_get_family(mp, pin);
- if (!family)
- return NULL;
-
- bufno = pin_to_bufno(family, pin);
- return family->regs + BUFCFG_OFFSET + bufno * 4;
-}
-
-static int mrfld_read_bufcfg(struct mrfld_pinctrl *mp, unsigned int pin, u32 *value)
-{
- void __iomem *bufcfg;
-
- if (!mrfld_buf_available(mp, pin))
- return -EBUSY;
-
- bufcfg = mrfld_get_bufcfg(mp, pin);
- *value = readl(bufcfg);
-
- return 0;
-}
-
-static void mrfld_update_bufcfg(struct mrfld_pinctrl *mp, unsigned int pin,
- u32 bits, u32 mask)
-{
- void __iomem *bufcfg;
- u32 value;
-
- bufcfg = mrfld_get_bufcfg(mp, pin);
- value = readl(bufcfg);
-
- value &= ~mask;
- value |= bits & mask;
-
- writel(value, bufcfg);
-}
-
-static int mrfld_get_groups_count(struct pinctrl_dev *pctldev)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
-
- return mp->ngroups;
-}
-
-static const char *mrfld_get_group_name(struct pinctrl_dev *pctldev,
- unsigned int group)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
-
- return mp->groups[group].grp.name;
-}
-
-static int mrfld_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group,
- const unsigned int **pins, unsigned int *npins)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
-
- *pins = mp->groups[group].grp.pins;
- *npins = mp->groups[group].grp.npins;
- return 0;
-}
-
-static void mrfld_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
- unsigned int pin)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
- u32 value, mode;
- int ret;
-
- ret = mrfld_read_bufcfg(mp, pin, &value);
- if (ret) {
- seq_puts(s, "not available");
- return;
- }
-
- mode = (value & BUFCFG_PINMODE_MASK) >> BUFCFG_PINMODE_SHIFT;
- if (mode == BUFCFG_PINMODE_GPIO)
- seq_puts(s, "GPIO ");
- else
- seq_printf(s, "mode %d ", mode);
-
- seq_printf(s, "0x%08x", value);
-}
-
-static const struct pinctrl_ops mrfld_pinctrl_ops = {
- .get_groups_count = mrfld_get_groups_count,
- .get_group_name = mrfld_get_group_name,
- .get_group_pins = mrfld_get_group_pins,
- .pin_dbg_show = mrfld_pin_dbg_show,
+static const struct tng_pinctrl mrfld_soc_data = {
+ .pins = mrfld_pins,
+ .npins = ARRAY_SIZE(mrfld_pins),
+ .groups = mrfld_groups,
+ .ngroups = ARRAY_SIZE(mrfld_groups),
+ .families = mrfld_families,
+ .nfamilies = ARRAY_SIZE(mrfld_families),
+ .functions = mrfld_functions,
+ .nfunctions = ARRAY_SIZE(mrfld_functions),
};
-static int mrfld_get_functions_count(struct pinctrl_dev *pctldev)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
-
- return mp->nfunctions;
-}
-
-static const char *mrfld_get_function_name(struct pinctrl_dev *pctldev,
- unsigned int function)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
-
- return mp->functions[function].func.name;
-}
-
-static int mrfld_get_function_groups(struct pinctrl_dev *pctldev,
- unsigned int function,
- const char * const **groups,
- unsigned int * const ngroups)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
-
- *groups = mp->functions[function].func.groups;
- *ngroups = mp->functions[function].func.ngroups;
- return 0;
-}
-
-static int mrfld_pinmux_set_mux(struct pinctrl_dev *pctldev,
- unsigned int function,
- unsigned int group)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
- const struct intel_pingroup *grp = &mp->groups[group];
- u32 bits = grp->mode << BUFCFG_PINMODE_SHIFT;
- u32 mask = BUFCFG_PINMODE_MASK;
- unsigned long flags;
- unsigned int i;
-
- /*
- * 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->grp.npins; i++) {
- if (!mrfld_buf_available(mp, grp->grp.pins[i]))
- return -EBUSY;
- }
-
- /* Now enable the mux setting for each pin in the group */
- raw_spin_lock_irqsave(&mp->lock, flags);
- for (i = 0; i < grp->grp.npins; i++)
- mrfld_update_bufcfg(mp, grp->grp.pins[i], bits, mask);
- raw_spin_unlock_irqrestore(&mp->lock, flags);
-
- return 0;
-}
-
-static int mrfld_gpio_request_enable(struct pinctrl_dev *pctldev,
- struct pinctrl_gpio_range *range,
- unsigned int pin)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
- u32 bits = BUFCFG_PINMODE_GPIO << BUFCFG_PINMODE_SHIFT;
- u32 mask = BUFCFG_PINMODE_MASK;
- unsigned long flags;
-
- if (!mrfld_buf_available(mp, pin))
- return -EBUSY;
-
- raw_spin_lock_irqsave(&mp->lock, flags);
- mrfld_update_bufcfg(mp, pin, bits, mask);
- raw_spin_unlock_irqrestore(&mp->lock, flags);
-
- return 0;
-}
-
-static const struct pinmux_ops mrfld_pinmux_ops = {
- .get_functions_count = mrfld_get_functions_count,
- .get_function_name = mrfld_get_function_name,
- .get_function_groups = mrfld_get_function_groups,
- .set_mux = mrfld_pinmux_set_mux,
- .gpio_request_enable = mrfld_gpio_request_enable,
-};
-
-static int mrfld_config_get(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *config)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
- enum pin_config_param param = pinconf_to_config_param(*config);
- u32 value, term;
- u16 arg = 0;
- int ret;
-
- ret = mrfld_read_bufcfg(mp, pin, &value);
- if (ret)
- return -ENOTSUPP;
-
- term = (value & BUFCFG_PUPD_VAL_MASK) >> BUFCFG_PUPD_VAL_SHIFT;
-
- switch (param) {
- case PIN_CONFIG_BIAS_DISABLE:
- if (value & BUFCFG_Px_EN_MASK)
- return -EINVAL;
- break;
-
- case PIN_CONFIG_BIAS_PULL_UP:
- if ((value & BUFCFG_Px_EN_MASK) != BUFCFG_PU_EN)
- return -EINVAL;
-
- switch (term) {
- case BUFCFG_PUPD_VAL_910:
- arg = 910;
- break;
- case BUFCFG_PUPD_VAL_2K:
- arg = 2000;
- break;
- case BUFCFG_PUPD_VAL_20K:
- arg = 20000;
- break;
- case BUFCFG_PUPD_VAL_50K:
- arg = 50000;
- break;
- }
-
- break;
-
- case PIN_CONFIG_BIAS_PULL_DOWN:
- if ((value & BUFCFG_Px_EN_MASK) != BUFCFG_PD_EN)
- return -EINVAL;
-
- switch (term) {
- case BUFCFG_PUPD_VAL_910:
- arg = 910;
- break;
- case BUFCFG_PUPD_VAL_2K:
- arg = 2000;
- break;
- case BUFCFG_PUPD_VAL_20K:
- arg = 20000;
- break;
- case BUFCFG_PUPD_VAL_50K:
- arg = 50000;
- break;
- }
-
- break;
-
- case PIN_CONFIG_DRIVE_PUSH_PULL:
- if (value & BUFCFG_OD_EN)
- return -EINVAL;
- break;
-
- case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- if (!(value & BUFCFG_OD_EN))
- return -EINVAL;
- break;
-
- case PIN_CONFIG_SLEW_RATE:
- if (!(value & BUFCFG_SLEWSEL))
- arg = 0;
- else
- arg = 1;
- break;
-
- default:
- return -ENOTSUPP;
- }
-
- *config = pinconf_to_config_packed(param, arg);
- return 0;
-}
-
-static int mrfld_config_set_pin(struct mrfld_pinctrl *mp, unsigned int pin,
- unsigned long config)
-{
- unsigned int param = pinconf_to_config_param(config);
- unsigned int arg = pinconf_to_config_argument(config);
- u32 bits = 0, mask = 0;
- unsigned long flags;
-
- switch (param) {
- case PIN_CONFIG_BIAS_DISABLE:
- mask |= BUFCFG_Px_EN_MASK | BUFCFG_PUPD_VAL_MASK;
- break;
-
- case PIN_CONFIG_BIAS_PULL_UP:
- mask |= BUFCFG_Px_EN_MASK | BUFCFG_PUPD_VAL_MASK;
- bits |= BUFCFG_PU_EN;
-
- /* Set default strength value in case none is given */
- if (arg == 1)
- arg = 20000;
-
- switch (arg) {
- case 50000:
- bits |= BUFCFG_PUPD_VAL_50K << BUFCFG_PUPD_VAL_SHIFT;
- break;
- case 20000:
- bits |= BUFCFG_PUPD_VAL_20K << BUFCFG_PUPD_VAL_SHIFT;
- break;
- case 2000:
- bits |= BUFCFG_PUPD_VAL_2K << BUFCFG_PUPD_VAL_SHIFT;
- break;
- default:
- return -EINVAL;
- }
-
- break;
-
- case PIN_CONFIG_BIAS_PULL_DOWN:
- mask |= BUFCFG_Px_EN_MASK | BUFCFG_PUPD_VAL_MASK;
- bits |= BUFCFG_PD_EN;
-
- /* Set default strength value in case none is given */
- if (arg == 1)
- arg = 20000;
-
- switch (arg) {
- case 50000:
- bits |= BUFCFG_PUPD_VAL_50K << BUFCFG_PUPD_VAL_SHIFT;
- break;
- case 20000:
- bits |= BUFCFG_PUPD_VAL_20K << BUFCFG_PUPD_VAL_SHIFT;
- break;
- case 2000:
- bits |= BUFCFG_PUPD_VAL_2K << BUFCFG_PUPD_VAL_SHIFT;
- break;
- default:
- return -EINVAL;
- }
-
- break;
-
- case PIN_CONFIG_DRIVE_PUSH_PULL:
- mask |= BUFCFG_OD_EN;
- bits &= ~BUFCFG_OD_EN;
- break;
-
- case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- mask |= BUFCFG_OD_EN;
- bits |= BUFCFG_OD_EN;
- break;
-
- case PIN_CONFIG_SLEW_RATE:
- mask |= BUFCFG_SLEWSEL;
- if (arg)
- bits |= BUFCFG_SLEWSEL;
- break;
- }
-
- raw_spin_lock_irqsave(&mp->lock, flags);
- mrfld_update_bufcfg(mp, pin, bits, mask);
- raw_spin_unlock_irqrestore(&mp->lock, flags);
-
- return 0;
-}
-
-static int mrfld_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
- unsigned long *configs, unsigned int nconfigs)
-{
- struct mrfld_pinctrl *mp = pinctrl_dev_get_drvdata(pctldev);
- unsigned int i;
- int ret;
-
- if (!mrfld_buf_available(mp, 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:
- case PIN_CONFIG_DRIVE_PUSH_PULL:
- case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- case PIN_CONFIG_SLEW_RATE:
- ret = mrfld_config_set_pin(mp, pin, configs[i]);
- if (ret)
- return ret;
- break;
-
- default:
- return -ENOTSUPP;
- }
- }
-
- return 0;
-}
-
-static int mrfld_config_group_get(struct pinctrl_dev *pctldev,
- unsigned int group, unsigned long *config)
-{
- const unsigned int *pins;
- unsigned int npins;
- int ret;
-
- ret = mrfld_get_group_pins(pctldev, group, &pins, &npins);
- if (ret)
- return ret;
-
- ret = mrfld_config_get(pctldev, pins[0], config);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static int mrfld_config_group_set(struct pinctrl_dev *pctldev,
- unsigned int group, unsigned long *configs,
- unsigned int num_configs)
-{
- const unsigned int *pins;
- unsigned int npins;
- int i, ret;
-
- ret = mrfld_get_group_pins(pctldev, group, &pins, &npins);
- if (ret)
- return ret;
-
- for (i = 0; i < npins; i++) {
- ret = mrfld_config_set(pctldev, pins[i], configs, num_configs);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static const struct pinconf_ops mrfld_pinconf_ops = {
- .is_generic = true,
- .pin_config_get = mrfld_config_get,
- .pin_config_set = mrfld_config_set,
- .pin_config_group_get = mrfld_config_group_get,
- .pin_config_group_set = mrfld_config_group_set,
-};
-
-static const struct pinctrl_desc mrfld_pinctrl_desc = {
- .pctlops = &mrfld_pinctrl_ops,
- .pmxops = &mrfld_pinmux_ops,
- .confops = &mrfld_pinconf_ops,
- .owner = THIS_MODULE,
-};
-
-static int mrfld_pinctrl_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct mrfld_family *families;
- struct mrfld_pinctrl *mp;
- void __iomem *regs;
- size_t nfamilies;
- unsigned int i;
-
- mp = devm_kzalloc(dev, sizeof(*mp), GFP_KERNEL);
- if (!mp)
- return -ENOMEM;
-
- mp->dev = dev;
- raw_spin_lock_init(&mp->lock);
-
- regs = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(regs))
- return PTR_ERR(regs);
-
- /*
- * Make a copy of the families which we can use to hold pointers
- * to the registers.
- */
- nfamilies = ARRAY_SIZE(mrfld_families),
- families = devm_kmemdup(dev, mrfld_families, sizeof(mrfld_families), GFP_KERNEL);
- if (!families)
- return -ENOMEM;
-
- /* Splice memory resource by chunk per family */
- for (i = 0; i < nfamilies; i++) {
- struct mrfld_family *family = &families[i];
-
- family->regs = regs + family->barno * MRFLD_FAMILY_LEN;
- }
-
- mp->families = families;
- mp->nfamilies = nfamilies;
- mp->functions = mrfld_functions;
- mp->nfunctions = ARRAY_SIZE(mrfld_functions);
- mp->groups = mrfld_groups;
- mp->ngroups = ARRAY_SIZE(mrfld_groups);
- mp->pctldesc = mrfld_pinctrl_desc;
- mp->pctldesc.name = dev_name(dev);
- mp->pctldesc.pins = mrfld_pins;
- mp->pctldesc.npins = ARRAY_SIZE(mrfld_pins);
-
- mp->pctldev = devm_pinctrl_register(dev, &mp->pctldesc, mp);
- if (IS_ERR(mp->pctldev)) {
- dev_err(dev, "failed to register pinctrl driver\n");
- return PTR_ERR(mp->pctldev);
- }
-
- platform_set_drvdata(pdev, mp);
- return 0;
-}
-
static const struct acpi_device_id mrfld_acpi_table[] = {
- { "INTC1002" },
+ { "INTC1002", (kernel_ulong_t)&mrfld_soc_data },
{ }
};
MODULE_DEVICE_TABLE(acpi, mrfld_acpi_table);
static struct platform_driver mrfld_pinctrl_driver = {
- .probe = mrfld_pinctrl_probe,
+ .probe = devm_tng_pinctrl_probe,
.driver = {
.name = "pinctrl-merrifield",
.acpi_match_table = mrfld_acpi_table,
MODULE_DESCRIPTION("Intel Merrifield SoC pinctrl driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:pinctrl-merrifield");
+MODULE_IMPORT_NS(PINCTRL_TANGIER);
projects / platform / kernel / linux-starfive.git / commitdiff