190 lines
5.0 KiB
C
190 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef PINCTRL_PINCTRL_NOMADIK_H
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#define PINCTRL_PINCTRL_NOMADIK_H
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/* Package definitions */
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#define PINCTRL_NMK_STN8815 0
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#define PINCTRL_NMK_DB8500 1
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#define PINCTRL_NMK_DB8540 2
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/* Alternate functions: function C is set in hw by setting both A and B */
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#define NMK_GPIO_ALT_GPIO 0
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#define NMK_GPIO_ALT_A 1
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#define NMK_GPIO_ALT_B 2
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#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
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#define NMK_GPIO_ALT_CX_SHIFT 2
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#define NMK_GPIO_ALT_C1 ((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
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#define NMK_GPIO_ALT_C2 ((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
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#define NMK_GPIO_ALT_C3 ((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
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#define NMK_GPIO_ALT_C4 ((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
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#define PRCM_GPIOCR_ALTCX(pin_num,\
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altc1_used, altc1_ri, altc1_cb,\
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altc2_used, altc2_ri, altc2_cb,\
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altc3_used, altc3_ri, altc3_cb,\
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altc4_used, altc4_ri, altc4_cb)\
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{\
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.pin = pin_num,\
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.altcx[PRCM_IDX_GPIOCR_ALTC1] = {\
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.used = altc1_used,\
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.reg_index = altc1_ri,\
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.control_bit = altc1_cb\
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},\
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.altcx[PRCM_IDX_GPIOCR_ALTC2] = {\
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.used = altc2_used,\
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.reg_index = altc2_ri,\
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.control_bit = altc2_cb\
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},\
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.altcx[PRCM_IDX_GPIOCR_ALTC3] = {\
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.used = altc3_used,\
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.reg_index = altc3_ri,\
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.control_bit = altc3_cb\
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},\
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.altcx[PRCM_IDX_GPIOCR_ALTC4] = {\
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.used = altc4_used,\
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.reg_index = altc4_ri,\
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.control_bit = altc4_cb\
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},\
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}
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/**
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* enum prcm_gpiocr_reg_index
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* Used to reference an PRCM GPIOCR register address.
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*/
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enum prcm_gpiocr_reg_index {
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PRCM_IDX_GPIOCR1,
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PRCM_IDX_GPIOCR2,
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PRCM_IDX_GPIOCR3
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};
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/**
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* enum prcm_gpiocr_altcx_index
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* Used to reference an Other alternate-C function.
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*/
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enum prcm_gpiocr_altcx_index {
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PRCM_IDX_GPIOCR_ALTC1,
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PRCM_IDX_GPIOCR_ALTC2,
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PRCM_IDX_GPIOCR_ALTC3,
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PRCM_IDX_GPIOCR_ALTC4,
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PRCM_IDX_GPIOCR_ALTC_MAX,
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};
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/**
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* struct prcm_gpio_altcx - Other alternate-C function
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* @used: other alternate-C function availability
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* @reg_index: PRCM GPIOCR register index used to control the function
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* @control_bit: PRCM GPIOCR bit used to control the function
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*/
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struct prcm_gpiocr_altcx {
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bool used:1;
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u8 reg_index:2;
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u8 control_bit:5;
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} __packed;
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/**
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* struct prcm_gpio_altcx_pin_desc - Other alternate-C pin
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* @pin: The pin number
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* @altcx: array of other alternate-C[1-4] functions
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*/
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struct prcm_gpiocr_altcx_pin_desc {
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unsigned short pin;
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struct prcm_gpiocr_altcx altcx[PRCM_IDX_GPIOCR_ALTC_MAX];
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};
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/**
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* struct nmk_function - Nomadik pinctrl mux function
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* @name: The name of the function, exported to pinctrl core.
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* @groups: An array of pin groups that may select this function.
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* @ngroups: The number of entries in @groups.
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*/
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struct nmk_function {
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const char *name;
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const char * const *groups;
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unsigned ngroups;
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};
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/**
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* struct nmk_pingroup - describes a Nomadik pin group
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* @name: the name of this specific pin group
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* @pins: an array of discrete physical pins used in this group, taken
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* from the driver-local pin enumeration space
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* @num_pins: the number of pins in this group array, i.e. the number of
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* elements in .pins so we can iterate over that array
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* @altsetting: the altsetting to apply to all pins in this group to
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* configure them to be used by a function
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*/
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struct nmk_pingroup {
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const char *name;
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const unsigned int *pins;
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const unsigned npins;
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int altsetting;
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};
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/**
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* struct nmk_pinctrl_soc_data - Nomadik pin controller per-SoC configuration
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* @pins: An array describing all pins the pin controller affects.
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* All pins which are also GPIOs must be listed first within the
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* array, and be numbered identically to the GPIO controller's
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* numbering.
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* @npins: The number of entries in @pins.
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* @functions: The functions supported on this SoC.
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* @nfunction: The number of entries in @functions.
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* @groups: An array describing all pin groups the pin SoC supports.
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* @ngroups: The number of entries in @groups.
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* @altcx_pins: The pins that support Other alternate-C function on this SoC
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* @npins_altcx: The number of Other alternate-C pins
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* @prcm_gpiocr_registers: The array of PRCM GPIOCR registers on this SoC
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*/
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struct nmk_pinctrl_soc_data {
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const struct pinctrl_pin_desc *pins;
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unsigned npins;
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const struct nmk_function *functions;
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unsigned nfunctions;
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const struct nmk_pingroup *groups;
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unsigned ngroups;
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const struct prcm_gpiocr_altcx_pin_desc *altcx_pins;
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unsigned npins_altcx;
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const u16 *prcm_gpiocr_registers;
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};
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#ifdef CONFIG_PINCTRL_STN8815
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void nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc);
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#else
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static inline void
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nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc)
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{
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}
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#endif
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#ifdef CONFIG_PINCTRL_DB8500
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void nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc);
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#else
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static inline void
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nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc)
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{
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}
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#endif
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#ifdef CONFIG_PINCTRL_DB8540
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void nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc);
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#else
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static inline void
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nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc)
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{
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}
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#endif
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#endif /* PINCTRL_PINCTRL_NOMADIK_H */
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