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Diffstat (limited to 'arch/arm/mach-omap2/mux.h')
| -rw-r--r-- | arch/arm/mach-omap2/mux.h | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/mux.h b/arch/arm/mach-omap2/mux.h new file mode 100644 index 000000000000..a4ab17a737a6 --- /dev/null +++ b/arch/arm/mach-omap2/mux.h @@ -0,0 +1,335 @@ +/* + * Copyright (C) 2009 Nokia + * Copyright (C) 2009-2010 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "mux2420.h" +#include "mux2430.h" +#include "mux34xx.h" +#include "mux44xx.h" + +#define OMAP_MUX_TERMINATOR 0xffff + +/* 34xx mux mode options for each pin. See TRM for options */ +#define OMAP_MUX_MODE0 0 +#define OMAP_MUX_MODE1 1 +#define OMAP_MUX_MODE2 2 +#define OMAP_MUX_MODE3 3 +#define OMAP_MUX_MODE4 4 +#define OMAP_MUX_MODE5 5 +#define OMAP_MUX_MODE6 6 +#define OMAP_MUX_MODE7 7 + +/* 24xx/34xx mux bit defines */ +#define OMAP_PULL_ENA (1 << 3) +#define OMAP_PULL_UP (1 << 4) +#define OMAP_ALTELECTRICALSEL (1 << 5) + +/* 34xx specific mux bit defines */ +#define OMAP_INPUT_EN (1 << 8) +#define OMAP_OFF_EN (1 << 9) +#define OMAP_OFFOUT_EN (1 << 10) +#define OMAP_OFFOUT_VAL (1 << 11) +#define OMAP_OFF_PULL_EN (1 << 12) +#define OMAP_OFF_PULL_UP (1 << 13) +#define OMAP_WAKEUP_EN (1 << 14) + +/* 44xx specific mux bit defines */ +#define OMAP_WAKEUP_EVENT (1 << 15) + +/* Active pin states */ +#define OMAP_PIN_OUTPUT 0 +#define OMAP_PIN_INPUT OMAP_INPUT_EN +#define OMAP_PIN_INPUT_PULLUP (OMAP_PULL_ENA | OMAP_INPUT_EN \ + | OMAP_PULL_UP) +#define OMAP_PIN_INPUT_PULLDOWN (OMAP_PULL_ENA | OMAP_INPUT_EN) + +/* Off mode states */ +#define OMAP_PIN_OFF_NONE 0 +#define OMAP_PIN_OFF_OUTPUT_HIGH (OMAP_OFF_EN | OMAP_OFFOUT_EN \ + | OMAP_OFFOUT_VAL) +#define OMAP_PIN_OFF_OUTPUT_LOW (OMAP_OFF_EN | OMAP_OFFOUT_EN) +#define OMAP_PIN_OFF_INPUT_PULLUP (OMAP_OFF_EN | OMAP_OFF_PULL_EN \ + | OMAP_OFF_PULL_UP) +#define OMAP_PIN_OFF_INPUT_PULLDOWN (OMAP_OFF_EN | OMAP_OFF_PULL_EN) +#define OMAP_PIN_OFF_WAKEUPENABLE OMAP_WAKEUP_EN + +#define OMAP_MODE_GPIO(x) (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE4) + +/* Flags for omapX_mux_init */ +#define OMAP_PACKAGE_MASK 0xffff +#define OMAP_PACKAGE_CBS 8 /* 547-pin 0.40 0.40 */ +#define OMAP_PACKAGE_CBL 7 /* 547-pin 0.40 0.40 */ +#define OMAP_PACKAGE_CBP 6 /* 515-pin 0.40 0.50 */ +#define OMAP_PACKAGE_CUS 5 /* 423-pin 0.65 */ +#define OMAP_PACKAGE_CBB 4 /* 515-pin 0.40 0.50 */ +#define OMAP_PACKAGE_CBC 3 /* 515-pin 0.50 0.65 */ +#define OMAP_PACKAGE_ZAC 2 /* 24xx 447-pin POP */ +#define OMAP_PACKAGE_ZAF 1 /* 2420 447-pin SIP */ + + +#define OMAP_MUX_NR_MODES 8 /* Available modes */ +#define OMAP_MUX_NR_SIDES 2 /* Bottom & top */ + +/* + * omap_mux_init flags definition: + * + * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits. + * The default value is 16 bits. + * OMAP_MUX_GPIO_IN_MODE3: The GPIO is selected in mode3. + * The default is mode4. + */ +#define OMAP_MUX_REG_8BIT (1 << 0) +#define OMAP_MUX_GPIO_IN_MODE3 (1 << 1) + +/** + * struct omap_board_data - board specific device data + * @id: instance id + * @flags: additional flags for platform init code + * @pads: array of device specific pads + * @pads_cnt: ARRAY_SIZE() of pads + */ +struct omap_board_data { + int id; + u32 flags; + struct omap_device_pad *pads; + int pads_cnt; +}; + +/** + * struct mux_partition - contain partition related information + * @name: name of the current partition + * @flags: flags specific to this partition + * @phys: physical address + * @size: partition size + * @base: virtual address after ioremap + * @muxmodes: list of nodes that belong to a partition + * @node: list node for the partitions linked list + */ +struct omap_mux_partition { + const char *name; + u32 flags; + u32 phys; + u32 size; + void __iomem *base; + struct list_head muxmodes; + struct list_head node; +}; + +/** + * struct omap_mux - data for omap mux register offset and it's value + * @reg_offset: mux register offset from the mux base + * @gpio: GPIO number + * @muxnames: available signal modes for a ball + * @balls: available balls on the package + * @partition: mux partition + */ +struct omap_mux { + u16 reg_offset; + u16 gpio; +#ifdef CONFIG_OMAP_MUX + char *muxnames[OMAP_MUX_NR_MODES]; +#ifdef CONFIG_DEBUG_FS + char *balls[OMAP_MUX_NR_SIDES]; +#endif +#endif +}; + +/** + * struct omap_ball - data for balls on omap package + * @reg_offset: mux register offset from the mux base + * @balls: available balls on the package + */ +struct omap_ball { + u16 reg_offset; + char *balls[OMAP_MUX_NR_SIDES]; +}; + +/** + * struct omap_board_mux - data for initializing mux registers + * @reg_offset: mux register offset from the mux base + * @mux_value: desired mux value to set + */ +struct omap_board_mux { + u16 reg_offset; + u16 value; +}; + +#define OMAP_DEVICE_PAD_ENABLED BIT(7) /* Not needed for board-*.c */ +#define OMAP_DEVICE_PAD_REMUX BIT(1) /* Dynamically remux a pad, + needs enable, idle and off + values */ +#define OMAP_DEVICE_PAD_WAKEUP BIT(0) /* Pad is wake-up capable */ + +/** + * struct omap_device_pad - device specific pad configuration + * @name: signal name + * @flags: pad specific runtime flags + * @enable: runtime value for a pad + * @idle: idle value for a pad + * @off: off value for a pad, defaults to safe mode + * @partition: mux partition + * @mux: mux register + */ +struct omap_device_pad { + char *name; + u8 flags; + u16 enable; + u16 idle; + u16 off; + struct omap_mux_partition *partition; + struct omap_mux *mux; +}; + +struct omap_hwmod_mux_info; + +#if defined(CONFIG_OMAP_MUX) + +/** + * omap_mux_init_gpio - initialize a signal based on the GPIO number + * @gpio: GPIO number + * @val: Options for the mux register value + */ +int omap_mux_init_gpio(int gpio, int val); + +/** + * omap_mux_init_signal - initialize a signal based on the signal name + * @muxname: Mux name in mode0_name.signal_name format + * @val: Options for the mux register value + */ +int omap_mux_init_signal(const char *muxname, int val); + +/** + * omap_hwmod_mux_init - initialize hwmod specific mux data + * @bpads: Board specific device signal names + * @nr_pads: Number of signal names for the device + */ +extern struct omap_hwmod_mux_info * +omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads); + +/** + * omap_hwmod_mux - omap hwmod specific pin muxing + * @hmux: Pads for a hwmod + * @state: Desired _HWMOD_STATE + * + * Called only from omap_hwmod.c, do not use. + */ +void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state); + +#else + +static inline int omap_mux_init_gpio(int gpio, int val) +{ + return 0; +} +static inline int omap_mux_init_signal(char *muxname, int val) +{ + return 0; +} + +static inline struct omap_hwmod_mux_info * +omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads) +{ + return NULL; +} + +static inline void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state) +{ +} + +static struct omap_board_mux *board_mux __initdata __maybe_unused; + +#endif + +/** + * omap_mux_get_gpio() - get mux register value based on GPIO number + * @gpio: GPIO number + * + */ +u16 omap_mux_get_gpio(int gpio); + +/** + * omap_mux_set_gpio() - set mux register value based on GPIO number + * @val: New mux register value + * @gpio: GPIO number + * + */ +void omap_mux_set_gpio(u16 val, int gpio); + +/** + * omap_mux_get() - get a mux partition by name + * @name: Name of the mux partition + * + */ +struct omap_mux_partition *omap_mux_get(const char *name); + +/** + * omap_mux_read() - read mux register + * @partition: Mux partition + * @mux_offset: Offset of the mux register + * + */ +u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset); + +/** + * omap_mux_write() - write mux register + * @partition: Mux partition + * @val: New mux register value + * @mux_offset: Offset of the mux register + * + * This should be only needed for dynamic remuxing of non-gpio signals. + */ +void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset); + +/** + * omap_mux_write_array() - write an array of mux registers + * @partition: Mux partition + * @board_mux: Array of mux registers terminated by MAP_MUX_TERMINATOR + * + * This should be only needed for dynamic remuxing of non-gpio signals. + */ +void omap_mux_write_array(struct omap_mux_partition *p, + struct omap_board_mux *board_mux); + +/** + * omap2420_mux_init() - initialize mux system with board specific set + * @board_mux: Board specific mux table + * @flags: OMAP package type used for the board + */ +int omap2420_mux_init(struct omap_board_mux *board_mux, int flags); + +/** + * omap2430_mux_init() - initialize mux system with board specific set + * @board_mux: Board specific mux table + * @flags: OMAP package type used for the board + */ +int omap2430_mux_init(struct omap_board_mux *board_mux, int flags); + +/** + * omap3_mux_init() - initialize mux system with board specific set + * @board_mux: Board specific mux table + * @flags: OMAP package type used for the board + */ +int omap3_mux_init(struct omap_board_mux *board_mux, int flags); + +/** + * omap4_mux_init() - initialize mux system with board specific set + * @board_mux: Board specific mux table + * @flags: OMAP package type used for the board + */ +int omap4_mux_init(struct omap_board_mux *board_mux, int flags); + +/** + * omap_mux_init - private mux init function, do not call + */ +int omap_mux_init(const char *name, u32 flags, + u32 mux_pbase, u32 mux_size, + struct omap_mux *superset, + struct omap_mux *package_subset, + struct omap_board_mux *board_mux, + struct omap_ball *package_balls); + |