1 files changed, 192 insertions, 0 deletions

diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.h b/drivers/pinctrl/nomadik/pinctrl-nomadik.h
new file mode 100644
index 000000000000..d8215f1e70c7
--- /dev/null
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.h
@@ -0,0 +1,192 @@
+#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 */