/*
* omap_hwmod macros, structures
*
* Copyright (C) 2009 Nokia Corporation
* Paul Walmsley
*
* Created in collaboration with (alphabetical order): Benoit Cousson,
* Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari
* Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff
*
* 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.
*
* These headers and macros are used to define OMAP on-chip module
* data and their integration with other OMAP modules and Linux.
*
* References:
* - OMAP2420 Multimedia Processor Silicon Revision 2.1.1, 2.2 (SWPU064)
* - OMAP2430 Multimedia Device POP Silicon Revision 2.1 (SWPU090)
* - OMAP34xx Multimedia Device Silicon Revision 3.1 (SWPU108)
* - OMAP4430 Multimedia Device Silicon Revision 1.0 (SWPU140)
* - Open Core Protocol Specification 2.2
*
* To do:
* - add interconnect error log structures
* - add pinmuxing
* - init_conn_id_bit (CONNID_BIT_VECTOR)
* - implement default hwmod SMS/SDRC flags?
*
*/
#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <plat/cpu.h>
struct omap_device;
/* OCP SYSCONFIG bit shifts/masks */
#define SYSC_MIDLEMODE_SHIFT 12
#define SYSC_MIDLEMODE_MASK (0x3 << SYSC_MIDLEMODE_SHIFT)
#define SYSC_CLOCKACTIVITY_SHIFT 8
#define SYSC_CLOCKACTIVITY_MASK (0x3 << SYSC_CLOCKACTIVITY_SHIFT)
#define SYSC_SIDLEMODE_SHIFT 3
#define SYSC_SIDLEMODE_MASK (0x3 << SYSC_SIDLEMODE_SHIFT)
#define SYSC_ENAWAKEUP_SHIFT 2
#define SYSC_ENAWAKEUP_MASK (1 << SYSC_ENAWAKEUP_SHIFT)
#define SYSC_SOFTRESET_SHIFT 1
#define SYSC_SOFTRESET_MASK (1 << SYSC_SOFTRESET_SHIFT)
/* OCP SYSSTATUS bit shifts/masks */
#define SYSS_RESETDONE_SHIFT 0
#define SYSS_RESETDONE_MASK (1 << SYSS_RESETDONE_SHIFT)
/* Master standby/slave idle mode flags */
#define HWMOD_IDLEMODE_FORCE (1 << 0)
#define HWMOD_IDLEMODE_NO (1 << 1)
#define HWMOD_IDLEMODE_SMART (1 << 2)
/**
* struct omap_hwmod_dma_info - MPU address space handled by the hwmod
* @name: name of the DMA channel (module local name)
* @dma_ch: DMA channel ID
*
* @name should be something short, e.g., "tx" or "rx". It is for use
* by platform_get_resource_byname(). It is defined locally to the
* hwmod.
*/
struct omap_hwmod_dma_info {
const char *name;
u16 dma_ch;
};
/**
* struct omap_hwmod_opt_clk - optional clocks used by this hwmod
* @role: "sys", "32k", "tv", etc -- for use in clk_get()
* @clkdev_dev_id: opt clock: clkdev dev_id string
* @clkdev_con_id: opt clock: clkdev con_id string
* @_clk: pointer to the struct clk (filled in at runtime)
*
* The module's interface clock and main functional clock should not
* be added as optional clocks.
*/
struct omap_hwmod_opt_clk {
const char *role;
const char *clkdev_dev_id;
const char *clkdev_con_id;
struct clk *_clk;
};
/* omap_hwmod_omap2_firewall.flags bits */
#define OMAP_FIREWALL_L3 (1 << 0)
#define OMAP_FIREWALL_L4 (1 << 1)
/**
* struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data
* @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_*
* @l4_fw_region: L4 firewall region ID
* @l4_prot_group: L4 protection group ID
* @flags: (see omap_hwmod_omap2_firewall.flags macros above)
*/
struct omap_hwmod_omap2_firewall {
u8 l3_perm_bit;
u8 l4_fw_region;
u8 l4_prot_group;
u8 flags;
};
/*
* omap_hwmod_addr_space.flags bits
*
* ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init.
* ADDR_TYPE_RT: Address space contains module register target data.
*/
#define ADDR_MAP_ON_INIT (1 << 0)
#define ADDR_TYPE_RT (1 << 1)
/**
* struct omap_hwmod_addr_space - MPU address space handled by the hwmod
* @pa_start: starting physical address
* @pa_end: ending physical address
* @flags: (see omap_hwmod_addr_space.flags macros above)
*
* Address space doesn't necessarily follow physical interconnect
* structure. GPMC is one example.
*/
struct omap_hwmod_addr_space {
u32 pa_start;
u32 pa_end;
u8 flags;
};
/*
* omap_hwmod_ocp_if.user bits: these indicate the initiators that use this
* interface to interact with the hwmod. Used to add sleep dependencies
* when the module is enabled or disabled.
*/
#define OCP_USER_MPU (1 << 0)
#define OCP_USER_SDMA (1 << 1)
/* omap_hwmod_ocp_if.flags bits */
#define OCPIF_HAS_IDLEST (1 << 0)
#define OCPIF_SWSUP_IDLE (1 << 1)
#define OCPIF_CAN_BURST (1 << 2)
/**
* struct omap_hwmod_ocp_if - OCP interface data
* @master: struct omap_hwmod that initiates OCP transactions on this link
* @slave: struct omap_hwmod that responds to OCP transactions on this link
* @addr: address space associated with this link
* @clkdev_dev_id: interface clock: clkdev dev_id string
* @clkdev_con_id: interface clock: clkdev con_id string
* @_clk: pointer to the interface struct clk (filled in at runtime)
* @fw: interface firewall data
* @addr_cnt: ARRAY_SIZE(@addr)
* @width: OCP data width
* @thread_cnt: number of threads
* @max_burst_len: maximum burst length in @width sized words (0 if unlimited)
* @user: initiators using this interface (see OCP_USER_* macros above)
* @flags: OCP interface flags (see OCPIF_* macros above)
*
* It may also be useful to add a tag_cnt field for OCP2.x devices.
*
* Parameter names beginning with an underscore are managed internally by
* the omap_hwmod code and should not be set during initialization.
*/
struct omap_hwmod_ocp_if {
struct omap_hwmod *master;
struct omap_hwmod *slave;
struct omap_hwmod_addr_space *addr;
const char *clkdev_dev_id;
const char *clkdev_con_id;
struct clk *_clk;
union {
struct omap_hwmod_omap2_firewall omap2;
} fw;
u8 addr_cnt;
u8 width;
u8 thread_cnt;
u8 max_burst_len;
u8 user;
u8 flags;
};
/* Macros for use in struct omap_hwmod_sysconfig */
/* Flags for use in omap_hwmod_sysconfig.idlemodes */
#define MASTER_STANDBY_SHIFT 2
#define SLAVE_IDLE_SHIFT 0
#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT)
#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT)
#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT)
#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT)
#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT)
#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT)
/* omap_hwmod_sysconfig.sysc_flags capability flags */
#define SYSC_HAS_AUTOIDLE (1 << 0)
#define SYSC_HAS_SOFTRESET (1 << 1)
#define SYSC_HAS_ENAWAKEUP (1 << 2)
#define SYSC_HAS_EMUFREE (1 << 3)
#define SYSC_HAS_CLOCKACTIVITY (1 << 4)
#define SYSC_HAS_SIDLEMODE (1 << 5)
#define SYSC_HAS_MIDLEMODE (1 << 6)
#define SYSS_MISSING (1 << 7)
/* omap_hwmod_sysconfig.clockact flags */
#define CLOCKACT_TEST_BOTH 0x0
#define CLOCKACT_TEST_MAIN 0x1
#define CLOCKACT_TEST_ICLK 0x2
#define CLOCKACT_TEST_NONE 0x3
/**
* struct omap_hwmod_sysconfig - hwmod OCP_SYSCONFIG/OCP_SYSSTATUS data
* @rev_offs: IP block revision register offset (from module base addr)
* @sysc_offs: OCP_SYSCONFIG register offset (from module base addr)
* @syss_offs: OCP_SYSSTATUS register offset (from module base addr)
* @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART}
* @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported
* @clockact: the default value of the module CLOCKACTIVITY bits
*
* @clockact describes to the module which clocks are likely to be
* disabled when the PRCM issues its idle request to the module. Some
* modules have separate clockdomains for the interface clock and main
* functional clock, and can check whether they should acknowledge the
* idle request based on the internal module functionality that has
* been associated with the clocks marked in @clockact. This field is
* only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below)
*
*/
struct omap_hwmod_sysconfig {
u16 rev_offs;
u16 sysc_offs;
u16 syss_offs;
u8 idlemodes;
u8 sysc_flags;
u8 clockact;
};
/**
* struct omap_hwmod_omap2_prcm - OMAP2/3-specific PRCM data
* @module_offs: PRCM submodule offset from the start of the PRM/CM
* @prcm_reg_id: PRCM register ID (e.g., 3 for CM_AUTOIDLE3)
* @module_bit: register bit shift for AUTOIDLE, WKST, WKEN, GRPSEL regs
* @idlest_reg_id: IDLEST register ID (e.g., 3 for CM_IDLEST3)
* @idlest_idle_bit: register bit shift for CM_IDLEST slave idle bit
* @idlest_stdby_bit: register bit shift for CM_IDLEST master standby bit
*
* @prcm_reg_id and @module_bit are specific to the AUTOIDLE, WKST,
* WKEN, GRPSEL registers. In an ideal world, no extra information
* would be needed for IDLEST information, but alas, there are some
* exceptions, so @idlest_reg_id, @idlest_idle_bit, @idlest_stdby_bit
* are needed for the IDLEST registers (c.f. 2430 I2CHS, 3430 USBHOST)
*/
struct omap_hwmod_omap2_prcm {
s16 module_offs;
u8 prcm_reg_id;
u8 module_bit;
u8 idlest_reg_id;
u8 idlest_idle_bit;
u8 idlest_stdby_bit;
};
/**
* struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
* @module_offs: PRCM submodule offset from the start of the PRM/CM1/CM2
* @device_offs: device register offset from @module_offs
* @submodule_wkdep_bit: bit shift of the WKDEP range
*/
struct omap_hwmod_omap4_prcm {
u32 module_offs;
u16 device_offs;
u8 submodule_wkdep_bit;
};
/*
* omap_hwmod.flags definitions
*
* HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out
* of idle, rather than relying on module smart-idle
* HWMOD_SWSUP_MSTDBY: omap_hwmod code should manually bring module in and out
* of standby, rather than relying on module smart-standby
* HWMOD_INIT_NO_RESET: don't reset this module at boot - important for
* SDRAM controller, etc.
* HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM
* controller, etc.
* HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup
*/
#define HWMOD_SWSUP_SIDLE (1 << 0)
#define HWMOD_SWSUP_MSTANDBY (1 << 1)
#define HWMOD_INIT_NO_RESET (1 << 2)
#define HWMOD_INIT_NO_IDLE (1 << 3)
#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 4)
/*
* omap_hwmod._int_flags definitions
* These are for internal use only and are managed by the omap_hwmod code.
*
* _HWMOD_NO_MPU_PORT: no path exists for the MPU to write to this module
* _HWMOD_WAKEUP_ENABLED: set when the omap_hwmod code has enabled ENAWAKEUP
* _HWMOD_SYSCONFIG_LOADED: set when the OCP_SYSCONFIG value has been cached
*/
#define _HWMOD_NO_MPU_PORT (1 << 0)
#define _HWMOD_WAKEUP_ENABLED (1 << 1)
#define _HWMOD_SYSCONFIG_LOADED (1 << 2)
/*
* omap_hwmod._state definitions
*
* INITIALIZED: reset (optionally), initialized, enabled, disabled
* (optionally)
*
*
*/
#define _HWMOD_STATE_UNKNOWN 0
#define _HWMOD_STATE_REGISTERED 1
#define _HWMOD_STATE_CLKS_INITED 2
#define _HWMOD_STATE_INITIALIZED 3
#define _HWMOD_STATE_ENABLED 4
#define _HWMOD_STATE_IDLE 5
#define _HWMOD_STATE_DISABLED 6
/**
* struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks)
* @name: name of the hwmod
* @od: struct omap_device currently associated with this hwmod (internal use)
* @mpu_irqs: ptr to an array of MPU IRQs (see also mpu_irqs_cnt)
* @sdma_chs: ptr to an array of SDMA channel IDs (see also sdma_chs_cnt)
* @prcm: PRCM data pertaining to this hwmod
* @clkdev_dev_id: main clock: clkdev dev_id string
* @clkdev_con_id: main clock: clkdev con_id string
* @_clk: pointer to the main struct clk (filled in at runtime)
* @opt_clks: other device clocks that drivers can request (0..*)
* @masters: ptr to array of OCP ifs that this hwmod can initiate on
* @slaves: ptr to array of OCP ifs that this hwmod can respond on
* @sysconfig: device SYSCONFIG/SYSSTATUS register data
* @dev_attr: arbitrary device attributes that can be passed to the driver
* @_sysc_cache: internal-use hwmod flags
* @_rt_va: cached register target start address (internal use)
* @_mpu_port_index: cached MPU register target slave ID (internal use)
* @msuspendmux_reg_id: CONTROL_MSUSPENDMUX register ID (1-6)
* @msuspendmux_shift: CONTROL_MSUSPENDMUX register bit shift
* @mpu_irqs_cnt: number of @mpu_irqs
* @sdma_chs_cnt: number of @sdma_chs
* @opt_clks_cnt: number of @opt_clks
* @master_cnt: number of @master entries
* @slaves_cnt: number of @slave entries
* @response_lat: device OCP response latency (in interface clock cycles)
* @_int_flags: internal-use hwmod flags
* @_state: internal-use hwmod state
* @flags: hwmod flags (documented below)
* @omap_chip: OMAP chips this hwmod is present on
* @node: list node for hwmod list (internal use)
*
* @clkdev_dev_id, @clkdev_con_id, and @clk all refer to this module's "main
* clock," which for our purposes is defined as "the functional clock needed
* for register accesses to complete." Modules may not have a main clock if
* the interface clock also serves as a main clock.
*
* Parameter names beginning with an underscore are managed internally by
* the omap_hwmod code and should not be set during initialization.
*/
struct omap_hwmod {
const char *name;
struct omap_device *od;
u8 *mpu_irqs;
struct omap_hwmod_dma_info *sdma_chs;
union {
struct omap_hwmod_omap2_prcm omap2;
struct omap_hwmod_omap4_prcm omap4;
} prcm;
const char *clkdev_dev_id;
const char *clkdev_con_id;
struct clk *_clk;
struct omap_hwmod_opt_clk *opt_clks;
struct omap_hwmod_ocp_if **masters; /* connect to *_IA */
struct omap_hwmod_ocp_if **slaves; /* connect to *_TA */
struct omap_hwmod_sysconfig *sysconfig;
void *dev_attr;
u32 _sysc_cache;
void __iomem *_rt_va;
struct list_head node;
u16 flags;
u8 _mpu_port_index;
u8 msuspendmux_reg_id;
u8 msuspendmux_shift;
u8 response_lat;
u8 mpu_irqs_cnt;
u8 sdma_chs_cnt;
u8 opt_clks_cnt;
u8 masters_cnt;
u8 slaves_cnt;
u8 hwmods_cnt;
u8 _int_flags;
u8 _state;
const struct omap_chip_id omap_chip;
};
int omap_hwmod_init(struct omap_hwmod **ohs);
int omap_hwmod_register(struct omap_hwmod *oh);
int omap_hwmod_unregister(struct omap_hwmod *oh);
struct omap_hwmod *omap_hwmod_lookup(const char *name);
int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh));
int omap_hwmod_late_init(void);
int omap_hwmod_enable(struct omap_hwmod *oh);
int omap_hwmod_idle(struct omap_hwmod *oh);
int omap_hwmod_shutdown(struct omap_hwmod *oh);
int omap_hwmod_enable_clocks(struct omap_hwmod *oh);
int omap_hwmod_disable_clocks(struct omap_hwmod *oh);
int omap_hwmod_reset(struct omap_hwmod *oh);
void omap_hwmod_ocp_barrier(struct omap_hwmod *oh);
void omap_hwmod_writel(u32 v, struct omap_hwmod *oh, u16 reg_offs);
u32 omap_hwmod_readl(struct omap_hwmod *oh, u16 reg_offs);
int omap_hwmod_count_resources(struct omap_hwmod *oh);
int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res);
struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh);
int omap_hwmod_add_initiator_dep(struct omap_hwmod *oh,
struct omap_hwmod *init_oh);
int omap_hwmod_del_initiator_dep(struct omap_hwmod *oh,
struct omap_hwmod *init_oh);
int omap_hwmod_set_clockact_both(struct omap_hwmod *oh);
int omap_hwmod_set_clockact_main(struct omap_hwmod *oh);
int omap_hwmod_set_clockact_iclk(struct omap_hwmod *oh);
int omap_hwmod_set_clockact_none(struct omap_hwmod *oh);
int omap_hwmod_enable_wakeup(struct omap_hwmod *oh);
int omap_hwmod_disable_wakeup(struct omap_hwmod *oh);
#endif
