/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_GPIO_NOMADIK_H
#define __LINUX_GPIO_NOMADIK_H
struct fwnode_handle;
/* Package definitions */
#define PINCTRL_NMK_STN8815 0
#define PINCTRL_NMK_DB8500 1
#define GPIO_BLOCK_SHIFT 5
#define NMK_GPIO_PER_CHIP BIT(GPIO_BLOCK_SHIFT)
#define NMK_MAX_BANKS DIV_ROUND_UP(512, NMK_GPIO_PER_CHIP)
/* Register in the logic block */
#define NMK_GPIO_DAT 0x00
#define NMK_GPIO_DATS 0x04
#define NMK_GPIO_DATC 0x08
#define NMK_GPIO_PDIS 0x0c
#define NMK_GPIO_DIR 0x10
#define NMK_GPIO_DIRS 0x14
#define NMK_GPIO_DIRC 0x18
#define NMK_GPIO_SLPC 0x1c
#define NMK_GPIO_AFSLA 0x20
#define NMK_GPIO_AFSLB 0x24
#define NMK_GPIO_LOWEMI 0x28
#define NMK_GPIO_RIMSC 0x40
#define NMK_GPIO_FIMSC 0x44
#define NMK_GPIO_IS 0x48
#define NMK_GPIO_IC 0x4c
#define NMK_GPIO_RWIMSC 0x50
#define NMK_GPIO_FWIMSC 0x54
#define NMK_GPIO_WKS 0x58
/* These appear in DB8540 and later ASICs */
#define NMK_GPIO_EDGELEVEL 0x5C
#define NMK_GPIO_LEVEL 0x60
/* Pull up/down values */
enum nmk_gpio_pull {
NMK_GPIO_PULL_NONE,
NMK_GPIO_PULL_UP,
NMK_GPIO_PULL_DOWN,
};
/* Sleep mode */
enum nmk_gpio_slpm {
NMK_GPIO_SLPM_INPUT,
NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
NMK_GPIO_SLPM_NOCHANGE,
NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
};
struct nmk_gpio_chip {
struct gpio_chip chip;
void __iomem *addr;
struct clk *clk;
unsigned int bank;
void (*set_ioforce)(bool enable);
spinlock_t lock;
bool sleepmode;
bool is_mobileye_soc;
/* Keep track of configured edges */
u32 edge_rising;
u32 edge_falling;
u32 real_wake;
u32 rwimsc;
u32 fwimsc;
u32 rimsc;
u32 fimsc;
u32 pull_up;
u32 lowemi;
};
/* Alternate functions: function C is set in hw by setting both A and B */
#define NMK_GPIO_ALT_GPIO 0
#define NMK_GPIO_ALT_A 1
#define NMK_GPIO_ALT_B 2
#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
#define NMK_GPIO_ALT_CX_SHIFT 2
#define NMK_GPIO_ALT_C1 ((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C2 ((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C3 ((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C4 ((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define PRCM_GPIOCR_ALTCX(pin_num,\
altc1_used, altc1_ri, altc1_cb,\
altc2_used, altc2_ri, altc2_cb,\
altc3_used, altc3_ri, altc3_cb,\
altc4_used, altc4_ri, altc4_cb)\
{\
.pin = pin_num,\
.altcx[PRCM_IDX_GPIOCR_ALTC1] = {\
.used = altc1_used,\
.reg_index = altc1_ri,\
.control_bit = altc1_cb\
},\
.altcx[PRCM_IDX_GPIOCR_ALTC2] = {\
.used = altc2_used,\
.reg_index = altc2_ri,\
.control_bit = altc2_cb\
},\
.altcx[PRCM_IDX_GPIOCR_ALTC3] = {\
.used = altc3_used,\
.reg_index = altc3_ri,\
.control_bit = altc3_cb\
},\
.altcx[PRCM_IDX_GPIOCR_ALTC4] = {\
.used = altc4_used,\
.reg_index = altc4_ri,\
.control_bit = altc4_cb\
},\
}
/**
* enum prcm_gpiocr_reg_index
* Used to reference an PRCM GPIOCR register address.
*/
enum prcm_gpiocr_reg_index {
PRCM_IDX_GPIOCR1,
PRCM_IDX_GPIOCR2,
PRCM_IDX_GPIOCR3
};
/**
* enum prcm_gpiocr_altcx_index
* Used to reference an Other alternate-C function.
*/
enum prcm_gpiocr_altcx_index {
PRCM_IDX_GPIOCR_ALTC1,
PRCM_IDX_GPIOCR_ALTC2,
PRCM_IDX_GPIOCR_ALTC3,
PRCM_IDX_GPIOCR_ALTC4,
PRCM_IDX_GPIOCR_ALTC_MAX,
};
/**
* struct prcm_gpio_altcx - Other alternate-C function
* @used: other alternate-C function availability
* @reg_index: PRCM GPIOCR register index used to control the function
* @control_bit: PRCM GPIOCR bit used to control the function
*/
struct prcm_gpiocr_altcx {
bool used:1;
u8 reg_index:2;
u8 control_bit:5;
} __packed;
/**
* struct prcm_gpio_altcx_pin_desc - Other alternate-C pin
* @pin: The pin number
* @altcx: array of other alternate-C[1-4] functions
*/
struct prcm_gpiocr_altcx_pin_desc {
unsigned short pin;
struct prcm_gpiocr_altcx altcx[PRCM_IDX_GPIOCR_ALTC_MAX];
};
/**
* struct nmk_function - Nomadik pinctrl mux function
* @name: The name of the function, exported to pinctrl core.
* @groups: An array of pin groups that may select this function.
* @ngroups: The number of entries in @groups.
*/
struct nmk_function {
const char *name;
const char * const *groups;
unsigned int ngroups;
};
/**
* struct nmk_pingroup - describes a Nomadik pin group
* @grp: Generic data of the pin group (name and pins)
* @altsetting: the altsetting to apply to all pins in this group to
* configure them to be used by a function
*/
struct nmk_pingroup {
struct pingroup grp;
int altsetting;
};
#define NMK_PIN_GROUP(a, b) \
{ \
.grp = PINCTRL_PINGROUP(#a, a##_pins, ARRAY_SIZE(a##_pins)), \
.altsetting = b, \
}
/**
* struct nmk_pinctrl_soc_data - Nomadik pin controller per-SoC configuration
* @pins: An array describing all pins the pin controller affects.
* All pins which are also GPIOs must be listed first within the
* array, and be numbered identically to the GPIO controller's
* numbering.
* @npins: The number of entries in @pins.
* @functions: The functions supported on this SoC.
* @nfunction: The number of entries in @functions.
* @groups: An array describing all pin groups the pin SoC supports.
* @ngroups: The number of entries in @groups.
* @altcx_pins: The pins that support Other alternate-C function on this SoC
* @npins_altcx: The number of Other alternate-C pins
* @prcm_gpiocr_registers: The array of PRCM GPIOCR registers on this SoC
*/
struct nmk_pinctrl_soc_data {
const struct pinctrl_pin_desc *pins;
unsigned int npins;
const struct nmk_function *functions;
unsigned int nfunctions;
const struct nmk_pingroup *groups;
unsigned int ngroups;
const struct prcm_gpiocr_altcx_pin_desc *altcx_pins;
unsigned int npins_altcx;
const u16 *prcm_gpiocr_registers;
};
#ifdef CONFIG_PINCTRL_STN8815
void nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc);
#else
static inline void
nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc)
{
}
#endif
#ifdef CONFIG_PINCTRL_DB8500
void nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc);
#else
static inline void
nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc)
{
}
#endif
#ifdef CONFIG_PINCTRL_DB8540
void nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc);
#else
static inline void
nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc)
{
}
#endif
struct platform_device;
#ifdef CONFIG_DEBUG_FS
/*
* Symbols declared in gpio-nomadik used by pinctrl-nomadik. If pinctrl-nomadik
* is enabled, then gpio-nomadik is enabled as well; the reverse if not always
* true.
*/
void nmk_gpio_dbg_show_one(struct seq_file *s, struct pinctrl_dev *pctldev,
struct gpio_chip *chip, unsigned int offset,
unsigned int gpio);
#else
static inline void nmk_gpio_dbg_show_one(struct seq_file *s,
struct pinctrl_dev *pctldev,
struct gpio_chip *chip,
unsigned int offset,
unsigned int gpio)
{
}
#endif
void __nmk_gpio_make_output(struct nmk_gpio_chip *nmk_chip,
unsigned int offset, int val);
void __nmk_gpio_set_slpm(struct nmk_gpio_chip *nmk_chip, unsigned int offset,
enum nmk_gpio_slpm mode);
struct nmk_gpio_chip *nmk_gpio_populate_chip(struct fwnode_handle *fwnode,
struct platform_device *pdev);
/* Symbols declared in pinctrl-nomadik used by gpio-nomadik. */
#ifdef CONFIG_PINCTRL_NOMADIK
extern struct nmk_gpio_chip *nmk_gpio_chips[NMK_MAX_BANKS];
extern spinlock_t nmk_gpio_slpm_lock;
int __maybe_unused nmk_prcm_gpiocr_get_mode(struct pinctrl_dev *pctldev,
int gpio);
#endif
#endif /* __LINUX_GPIO_NOMADIK_H */
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