| /* |
| * 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(partition, x) (((x) & OMAP_MUX_MODE7) == \ |
| partition->gpio) |
| #define OMAP_MODE_UART(x) (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE0) |
| |
| /* 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_GPIO_MUX_MODE, bits 0-2: gpio muxing mode, same like pad control |
| * register which includes values from 0-7. |
| * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits. |
| * The default value is 16 bits. |
| */ |
| #define OMAP_MUX_GPIO_IN_MODE0 OMAP_MUX_MODE0 |
| #define OMAP_MUX_GPIO_IN_MODE1 OMAP_MUX_MODE1 |
| #define OMAP_MUX_GPIO_IN_MODE2 OMAP_MUX_MODE2 |
| #define OMAP_MUX_GPIO_IN_MODE3 OMAP_MUX_MODE3 |
| #define OMAP_MUX_GPIO_IN_MODE4 OMAP_MUX_MODE4 |
| #define OMAP_MUX_GPIO_IN_MODE5 OMAP_MUX_MODE5 |
| #define OMAP_MUX_GPIO_IN_MODE6 OMAP_MUX_MODE6 |
| #define OMAP_MUX_GPIO_IN_MODE7 OMAP_MUX_MODE7 |
| #define OMAP_MUX_REG_8BIT (1 << 3) |
| |
| /** |
| * 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 |
| * @gpio: gpio mux mode |
| * @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 gpio; |
| 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 |
| */ |
| 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_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; |
| |
| #define OMAP_MUX_STATIC(signal, mode) \ |
| { \ |
| .name = (signal), \ |
| .enable = (mode), \ |
| } |
| |
| #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); |
| |
| int omap_mux_get_by_name(const char *muxname, |
| struct omap_mux_partition **found_partition, |
| struct omap_mux **found_mux); |
| #else |
| |
| static inline int omap_mux_get_by_name(const char *muxname, |
| struct omap_mux_partition **found_partition, |
| struct omap_mux **found_mux) |
| { |
| return 0; |
| } |
| |
| 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 __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_subset: Board specific mux table |
| * @board_wkup_subset: Board specific mux table for wakeup instance |
| * @flags: OMAP package type used for the board |
| */ |
| int omap4_mux_init(struct omap_board_mux *board_subset, |
| struct omap_board_mux *board_wkup_subset, 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); |
| |