linux/drivers/pinctrl/pinctrl-nomadik.h
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   1#ifndef PINCTRL_PINCTRL_NOMADIK_H
   2#define PINCTRL_PINCTRL_NOMADIK_H
   3
   4#include <plat/gpio-nomadik.h>
   5
   6/* Package definitions */
   7#define PINCTRL_NMK_STN8815     0
   8#define PINCTRL_NMK_DB8500      1
   9#define PINCTRL_NMK_DB8540      2
  10
  11#define PRCM_GPIOCR_ALTCX(pin_num,\
  12        altc1_used, altc1_ri, altc1_cb,\
  13        altc2_used, altc2_ri, altc2_cb,\
  14        altc3_used, altc3_ri, altc3_cb,\
  15        altc4_used, altc4_ri, altc4_cb)\
  16{\
  17        .pin = pin_num,\
  18        .altcx[PRCM_IDX_GPIOCR_ALTC1] = {\
  19                .used = altc1_used,\
  20                .reg_index = altc1_ri,\
  21                .control_bit = altc1_cb\
  22        },\
  23        .altcx[PRCM_IDX_GPIOCR_ALTC2] = {\
  24                .used = altc2_used,\
  25                .reg_index = altc2_ri,\
  26                .control_bit = altc2_cb\
  27        },\
  28        .altcx[PRCM_IDX_GPIOCR_ALTC3] = {\
  29                .used = altc3_used,\
  30                .reg_index = altc3_ri,\
  31                .control_bit = altc3_cb\
  32        },\
  33        .altcx[PRCM_IDX_GPIOCR_ALTC4] = {\
  34                .used = altc4_used,\
  35                .reg_index = altc4_ri,\
  36                .control_bit = altc4_cb\
  37        },\
  38}
  39
  40/**
  41 * enum prcm_gpiocr_reg_index
  42 * Used to reference an PRCM GPIOCR register address.
  43 */
  44enum prcm_gpiocr_reg_index {
  45        PRCM_IDX_GPIOCR1,
  46        PRCM_IDX_GPIOCR2,
  47        PRCM_IDX_GPIOCR3
  48};
  49/**
  50 * enum prcm_gpiocr_altcx_index
  51 * Used to reference an Other alternate-C function.
  52 */
  53enum prcm_gpiocr_altcx_index {
  54        PRCM_IDX_GPIOCR_ALTC1,
  55        PRCM_IDX_GPIOCR_ALTC2,
  56        PRCM_IDX_GPIOCR_ALTC3,
  57        PRCM_IDX_GPIOCR_ALTC4,
  58        PRCM_IDX_GPIOCR_ALTC_MAX,
  59};
  60
  61/**
  62 * struct prcm_gpio_altcx - Other alternate-C function
  63 * @used: other alternate-C function availability
  64 * @reg_index: PRCM GPIOCR register index used to control the function
  65 * @control_bit: PRCM GPIOCR bit used to control the function
  66 */
  67struct prcm_gpiocr_altcx {
  68        bool used:1;
  69        u8 reg_index:2;
  70        u8 control_bit:5;
  71} __packed;
  72
  73/**
  74 * struct prcm_gpio_altcx_pin_desc - Other alternate-C pin
  75 * @pin: The pin number
  76 * @altcx: array of other alternate-C[1-4] functions
  77 */
  78struct prcm_gpiocr_altcx_pin_desc {
  79        unsigned short pin;
  80        struct prcm_gpiocr_altcx altcx[PRCM_IDX_GPIOCR_ALTC_MAX];
  81};
  82
  83/**
  84 * struct nmk_function - Nomadik pinctrl mux function
  85 * @name: The name of the function, exported to pinctrl core.
  86 * @groups: An array of pin groups that may select this function.
  87 * @ngroups: The number of entries in @groups.
  88 */
  89struct nmk_function {
  90        const char *name;
  91        const char * const *groups;
  92        unsigned ngroups;
  93};
  94
  95/**
  96 * struct nmk_pingroup - describes a Nomadik pin group
  97 * @name: the name of this specific pin group
  98 * @pins: an array of discrete physical pins used in this group, taken
  99 *      from the driver-local pin enumeration space
 100 * @num_pins: the number of pins in this group array, i.e. the number of
 101 *      elements in .pins so we can iterate over that array
 102 * @altsetting: the altsetting to apply to all pins in this group to
 103 *      configure them to be used by a function
 104 */
 105struct nmk_pingroup {
 106        const char *name;
 107        const unsigned int *pins;
 108        const unsigned npins;
 109        int altsetting;
 110};
 111
 112/**
 113 * struct nmk_pinctrl_soc_data - Nomadik pin controller per-SoC configuration
 114 * @gpio_ranges: An array of GPIO ranges for this SoC
 115 * @gpio_num_ranges: The number of GPIO ranges for this SoC
 116 * @pins:       An array describing all pins the pin controller affects.
 117 *              All pins which are also GPIOs must be listed first within the
 118 *              array, and be numbered identically to the GPIO controller's
 119 *              numbering.
 120 * @npins:      The number of entries in @pins.
 121 * @functions:  The functions supported on this SoC.
 122 * @nfunction:  The number of entries in @functions.
 123 * @groups:     An array describing all pin groups the pin SoC supports.
 124 * @ngroups:    The number of entries in @groups.
 125 * @altcx_pins: The pins that support Other alternate-C function on this SoC
 126 * @npins_altcx: The number of Other alternate-C pins
 127 * @prcm_gpiocr_registers: The array of PRCM GPIOCR registers on this SoC
 128 */
 129struct nmk_pinctrl_soc_data {
 130        struct pinctrl_gpio_range *gpio_ranges;
 131        unsigned gpio_num_ranges;
 132        const struct pinctrl_pin_desc *pins;
 133        unsigned npins;
 134        const struct nmk_function *functions;
 135        unsigned nfunctions;
 136        const struct nmk_pingroup *groups;
 137        unsigned ngroups;
 138        const struct prcm_gpiocr_altcx_pin_desc *altcx_pins;
 139        unsigned npins_altcx;
 140        const u16 *prcm_gpiocr_registers;
 141};
 142
 143#ifdef CONFIG_PINCTRL_STN8815
 144
 145void nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc);
 146
 147#else
 148
 149static inline void
 150nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc)
 151{
 152}
 153
 154#endif
 155
 156#ifdef CONFIG_PINCTRL_DB8500
 157
 158void nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc);
 159
 160#else
 161
 162static inline void
 163nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc)
 164{
 165}
 166
 167#endif
 168
 169#ifdef CONFIG_PINCTRL_DB8540
 170
 171void nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc);
 172
 173#else
 174
 175static inline void
 176nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc)
 177{
 178}
 179
 180#endif
 181
 182#endif /* PINCTRL_PINCTRL_NOMADIK_H */
 183
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