pinctrl-nomadik.h
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#ifndef PINCTRL_PINCTRL_NOMADIK_H
#define PINCTRL_PINCTRL_NOMADIK_H
/* Package definitions */
#define PINCTRL_NMK_STN8815 0
#define PINCTRL_NMK_DB8500 1
#define PINCTRL_NMK_DB8540 2
/* 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 ngroups;
};
/**
* struct nmk_pingroup - describes a Nomadik pin group
* @name: the name of this specific pin group
* @pins: an array of discrete physical pins used in this group, taken
* from the driver-local pin enumeration space
* @num_pins: the number of pins in this group array, i.e. the number of
* elements in .pins so we can iterate over that array
* @altsetting: the altsetting to apply to all pins in this group to
* configure them to be used by a function
*/
struct nmk_pingroup {
const char *name;
const unsigned int *pins;
const unsigned npins;
int altsetting;
};
/**
* struct nmk_pinctrl_soc_data - Nomadik pin controller per-SoC configuration
* @gpio_ranges: An array of GPIO ranges for this SoC
* @gpio_num_ranges: The number of GPIO ranges for this SoC
* @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 {
struct pinctrl_gpio_range *gpio_ranges;
unsigned gpio_num_ranges;
const struct pinctrl_pin_desc *pins;
unsigned npins;
const struct nmk_function *functions;
unsigned nfunctions;
const struct nmk_pingroup *groups;
unsigned ngroups;
const struct prcm_gpiocr_altcx_pin_desc *altcx_pins;
unsigned 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
#endif /* PINCTRL_PINCTRL_NOMADIK_H */