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Diffstat (limited to 'drivers/pinctrl/uniphier/pinctrl-uniphier.h')
-rw-r--r--drivers/pinctrl/uniphier/pinctrl-uniphier.h188
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
new file mode 100644
index 000000000..249764733
--- /dev/null
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2015-2017 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#ifndef __PINCTRL_UNIPHIER_H__
+#define __PINCTRL_UNIPHIER_H__
+
+#include <linux/bits.h>
+#include <linux/build_bug.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+struct platform_device;
+
+/* input enable control register bit */
+#define UNIPHIER_PIN_IECTRL_SHIFT 0
+#define UNIPHIER_PIN_IECTRL_BITS 3
+#define UNIPHIER_PIN_IECTRL_MASK ((1UL << (UNIPHIER_PIN_IECTRL_BITS)) \
+ - 1)
+
+/* drive strength control register number */
+#define UNIPHIER_PIN_DRVCTRL_SHIFT ((UNIPHIER_PIN_IECTRL_SHIFT) + \
+ (UNIPHIER_PIN_IECTRL_BITS))
+#define UNIPHIER_PIN_DRVCTRL_BITS 9
+#define UNIPHIER_PIN_DRVCTRL_MASK ((1UL << (UNIPHIER_PIN_DRVCTRL_BITS)) \
+ - 1)
+
+/* drive control type */
+#define UNIPHIER_PIN_DRV_TYPE_SHIFT ((UNIPHIER_PIN_DRVCTRL_SHIFT) + \
+ (UNIPHIER_PIN_DRVCTRL_BITS))
+#define UNIPHIER_PIN_DRV_TYPE_BITS 3
+#define UNIPHIER_PIN_DRV_TYPE_MASK ((1UL << (UNIPHIER_PIN_DRV_TYPE_BITS)) \
+ - 1)
+
+/* pull-up / pull-down register number */
+#define UNIPHIER_PIN_PUPDCTRL_SHIFT ((UNIPHIER_PIN_DRV_TYPE_SHIFT) + \
+ (UNIPHIER_PIN_DRV_TYPE_BITS))
+#define UNIPHIER_PIN_PUPDCTRL_BITS 9
+#define UNIPHIER_PIN_PUPDCTRL_MASK ((1UL << (UNIPHIER_PIN_PUPDCTRL_BITS))\
+ - 1)
+
+/* direction of pull register */
+#define UNIPHIER_PIN_PULL_DIR_SHIFT ((UNIPHIER_PIN_PUPDCTRL_SHIFT) + \
+ (UNIPHIER_PIN_PUPDCTRL_BITS))
+#define UNIPHIER_PIN_PULL_DIR_BITS 3
+#define UNIPHIER_PIN_PULL_DIR_MASK ((1UL << (UNIPHIER_PIN_PULL_DIR_BITS))\
+ - 1)
+
+#if UNIPHIER_PIN_PULL_DIR_SHIFT + UNIPHIER_PIN_PULL_DIR_BITS > BITS_PER_LONG
+#error "unable to pack pin attributes."
+#endif
+
+#define UNIPHIER_PIN_IECTRL_NONE (UNIPHIER_PIN_IECTRL_MASK)
+#define UNIPHIER_PIN_IECTRL_EXIST 0
+
+/* drive control type */
+enum uniphier_pin_drv_type {
+ UNIPHIER_PIN_DRV_1BIT, /* 2 level control: 4/8 mA */
+ UNIPHIER_PIN_DRV_2BIT, /* 4 level control: 8/12/16/20 mA */
+ UNIPHIER_PIN_DRV_3BIT, /* 8 level control: 4/5/7/9/11/12/14/16 mA */
+ UNIPHIER_PIN_DRV_FIXED4, /* fixed to 4mA */
+ UNIPHIER_PIN_DRV_FIXED5, /* fixed to 5mA */
+ UNIPHIER_PIN_DRV_FIXED8, /* fixed to 8mA */
+ UNIPHIER_PIN_DRV_NONE, /* no support (input only pin) */
+};
+
+/* direction of pull register (no pin supports bi-directional pull biasing) */
+enum uniphier_pin_pull_dir {
+ UNIPHIER_PIN_PULL_UP, /* pull-up or disabled */
+ UNIPHIER_PIN_PULL_DOWN, /* pull-down or disabled */
+ UNIPHIER_PIN_PULL_UP_FIXED, /* always pull-up */
+ UNIPHIER_PIN_PULL_DOWN_FIXED, /* always pull-down */
+ UNIPHIER_PIN_PULL_NONE, /* no pull register */
+};
+
+#define UNIPHIER_PIN_IECTRL(x) \
+ (((x) & (UNIPHIER_PIN_IECTRL_MASK)) << (UNIPHIER_PIN_IECTRL_SHIFT))
+#define UNIPHIER_PIN_DRVCTRL(x) \
+ (((x) & (UNIPHIER_PIN_DRVCTRL_MASK)) << (UNIPHIER_PIN_DRVCTRL_SHIFT))
+#define UNIPHIER_PIN_DRV_TYPE(x) \
+ (((x) & (UNIPHIER_PIN_DRV_TYPE_MASK)) << (UNIPHIER_PIN_DRV_TYPE_SHIFT))
+#define UNIPHIER_PIN_PUPDCTRL(x) \
+ (((x) & (UNIPHIER_PIN_PUPDCTRL_MASK)) << (UNIPHIER_PIN_PUPDCTRL_SHIFT))
+#define UNIPHIER_PIN_PULL_DIR(x) \
+ (((x) & (UNIPHIER_PIN_PULL_DIR_MASK)) << (UNIPHIER_PIN_PULL_DIR_SHIFT))
+
+#define UNIPHIER_PIN_ATTR_PACKED(iectrl, drvctrl, drv_type, pupdctrl, pull_dir)\
+ (UNIPHIER_PIN_IECTRL(iectrl) | \
+ UNIPHIER_PIN_DRVCTRL(drvctrl) | \
+ UNIPHIER_PIN_DRV_TYPE(drv_type) | \
+ UNIPHIER_PIN_PUPDCTRL(pupdctrl) | \
+ UNIPHIER_PIN_PULL_DIR(pull_dir))
+
+static inline unsigned int uniphier_pin_get_iectrl(void *drv_data)
+{
+ return ((unsigned long)drv_data >> UNIPHIER_PIN_IECTRL_SHIFT) &
+ UNIPHIER_PIN_IECTRL_MASK;
+}
+
+static inline unsigned int uniphier_pin_get_drvctrl(void *drv_data)
+{
+ return ((unsigned long)drv_data >> UNIPHIER_PIN_DRVCTRL_SHIFT) &
+ UNIPHIER_PIN_DRVCTRL_MASK;
+}
+
+static inline unsigned int uniphier_pin_get_drv_type(void *drv_data)
+{
+ return ((unsigned long)drv_data >> UNIPHIER_PIN_DRV_TYPE_SHIFT) &
+ UNIPHIER_PIN_DRV_TYPE_MASK;
+}
+
+static inline unsigned int uniphier_pin_get_pupdctrl(void *drv_data)
+{
+ return ((unsigned long)drv_data >> UNIPHIER_PIN_PUPDCTRL_SHIFT) &
+ UNIPHIER_PIN_PUPDCTRL_MASK;
+}
+
+static inline unsigned int uniphier_pin_get_pull_dir(void *drv_data)
+{
+ return ((unsigned long)drv_data >> UNIPHIER_PIN_PULL_DIR_SHIFT) &
+ UNIPHIER_PIN_PULL_DIR_MASK;
+}
+
+struct uniphier_pinctrl_group {
+ const char *name;
+ const unsigned *pins;
+ unsigned num_pins;
+ const int *muxvals;
+};
+
+struct uniphier_pinmux_function {
+ const char *name;
+ const char * const *groups;
+ unsigned num_groups;
+};
+
+struct uniphier_pinctrl_socdata {
+ const struct pinctrl_pin_desc *pins;
+ unsigned int npins;
+ const struct uniphier_pinctrl_group *groups;
+ int groups_count;
+ const struct uniphier_pinmux_function *functions;
+ int functions_count;
+ int (*get_gpio_muxval)(unsigned int pin, unsigned int gpio_offset);
+ unsigned int caps;
+#define UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL BIT(1)
+#define UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE BIT(0)
+};
+
+#define UNIPHIER_PINCTRL_PIN(a, b, c, d, e, f, g) \
+{ \
+ .number = a, \
+ .name = b, \
+ .drv_data = (void *)UNIPHIER_PIN_ATTR_PACKED(c, d, e, f, g), \
+}
+
+#define __UNIPHIER_PINCTRL_GROUP(grp, mux) \
+ { \
+ .name = #grp, \
+ .pins = grp##_pins, \
+ .num_pins = ARRAY_SIZE(grp##_pins), \
+ .muxvals = mux, \
+ }
+
+#define UNIPHIER_PINCTRL_GROUP(grp) \
+ __UNIPHIER_PINCTRL_GROUP(grp, \
+ grp##_muxvals + \
+ BUILD_BUG_ON_ZERO(ARRAY_SIZE(grp##_pins) != \
+ ARRAY_SIZE(grp##_muxvals)))
+
+#define UNIPHIER_PINCTRL_GROUP_GPIO(grp) \
+ __UNIPHIER_PINCTRL_GROUP(grp, NULL)
+
+#define UNIPHIER_PINMUX_FUNCTION(func) \
+ { \
+ .name = #func, \
+ .groups = func##_groups, \
+ .num_groups = ARRAY_SIZE(func##_groups), \
+ }
+
+int uniphier_pinctrl_probe(struct platform_device *pdev,
+ const struct uniphier_pinctrl_socdata *socdata);
+
+extern const struct dev_pm_ops uniphier_pinctrl_pm_ops;
+
+#endif /* __PINCTRL_UNIPHIER_H__ */