drivers/pinctrl/pinctrl-nomadik.h

   1 #ifndef PINCTRL_PINCTRL_NOMADIK_H
   2 #define PINCTRL_PINCTRL_NOMADIK_H
   3
   4 #include <linux/platform_data/pinctrl-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  */
  44 enum 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  */
  53 enum 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  */
  67 struct 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  */
  78 struct 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  */
  89 struct 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  */
 105 struct 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  */
 129 struct 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
 145 void nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc);
 146
 147 #else
 148
 149 static inline void
 150 nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc)
 151 {
 152 }
 153
 154 #endif
 155
 156 #ifdef CONFIG_PINCTRL_DB8500
 157
 158 void nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc);
 159
 160 #else
 161
 162 static inline void
 163 nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc)
 164 {
 165 }
 166
 167 #endif
 168
 169 #ifdef CONFIG_PINCTRL_DB8540
 170
 171 void nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc);
 172
 173 #else
 174
 175 static inline void
 176 nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc)
 177 {
 178 }
 179
 180 #endif
 181
 182 #endif /* PINCTRL_PINCTRL_NOMADIK_H */