/* SPDX-License-Identifier: GPL-2.0-only */
/*
* omap_hwmod macros , structures
*
* Copyright ( C ) 2009 - 2011 Nokia Corporation
* Copyright ( C ) 2011 - 2012 Texas Instruments , Inc .
* Paul Walmsley
*
* Created in collaboration with ( alphabetical order ) : Beno î t Cousson ,
* Kevin Hilman , Tony Lindgren , Rajendra Nayak , Vikram Pandita , Sakari
* Poussa , Anand Sawant , Santosh Shilimkar , Richard Woodruff
*
* These headers and macros are used to define OMAP on - chip module
* data and their integration with other OMAP modules and Linux .
* Copious documentation and references can also be found in the
* omap_hwmod code , in arch / arm / mach - omap2 / omap_hwmod . c ( as of this
* writing ) .
*
* To do :
* - add interconnect error log structures
* - init_conn_id_bit ( CONNID_BIT_VECTOR )
* - implement default hwmod SMS / SDRC flags ?
* - move Linux - specific data ( " non - ROM data " ) out
*/
#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/init.h>
#include <linux/list.h>
#include <linux/ioport.h>
#include <linux/spinlock.h>
struct omap_device;
extern struct sysc_regbits omap_hwmod_sysc_type1;
extern struct sysc_regbits omap_hwmod_sysc_type2;
extern struct sysc_regbits omap_hwmod_sysc_type3;
extern struct sysc_regbits omap34xx_sr_sysc_fields;
extern struct sysc_regbits omap36xx_sr_sysc_fields;
extern struct sysc_regbits omap3_sham_sysc_fields;
extern struct sysc_regbits omap3xxx_aes_sysc_fields;
extern struct sysc_regbits omap_hwmod_sysc_type_mcasp;
extern struct sysc_regbits omap_hwmod_sysc_type_usb_host_fs;
/*
* OCP SYSCONFIG bit shifts / masks TYPE1 . These are for IPs compliant
* with the original PRCM protocol defined for OMAP2420
*/
#define SYSC_TYPE1_MIDLEMODE_SHIFT 12
#define SYSC_TYPE1_MIDLEMODE_MASK (0 x3 << SYSC_TYPE1_MIDLEMODE_SHIFT)
#define SYSC_TYPE1_CLOCKACTIVITY_SHIFT 8
#define SYSC_TYPE1_CLOCKACTIVITY_MASK (0 x3 << SYSC_TYPE1_CLOCKACTIVITY_SHIFT)
#define SYSC_TYPE1_SIDLEMODE_SHIFT 3
#define SYSC_TYPE1_SIDLEMODE_MASK (0 x3 << SYSC_TYPE1_SIDLEMODE_SHIFT)
#define SYSC_TYPE1_ENAWAKEUP_SHIFT 2
#define SYSC_TYPE1_ENAWAKEUP_MASK (1 << SYSC_TYPE1_ENAWAKEUP_SHIFT)
#define SYSC_TYPE1_SOFTRESET_SHIFT 1
#define SYSC_TYPE1_SOFTRESET_MASK (1 << SYSC_TYPE1_SOFTRESET_SHIFT)
#define SYSC_TYPE1_AUTOIDLE_SHIFT 0
#define SYSC_TYPE1_AUTOIDLE_MASK (1 << SYSC_TYPE1_AUTOIDLE_SHIFT)
/*
* OCP SYSCONFIG bit shifts / masks TYPE2 . These are for IPs compliant
* with the new PRCM protocol defined for new OMAP4 IPs .
*/
#define SYSC_TYPE2_SOFTRESET_SHIFT 0
#define SYSC_TYPE2_SOFTRESET_MASK (1 << SYSC_TYPE2_SOFTRESET_SHIFT)
#define SYSC_TYPE2_SIDLEMODE_SHIFT 2
#define SYSC_TYPE2_SIDLEMODE_MASK (0 x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
#define SYSC_TYPE2_MIDLEMODE_SHIFT 4
#define SYSC_TYPE2_MIDLEMODE_MASK (0 x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
#define SYSC_TYPE2_DMADISABLE_SHIFT 16
#define SYSC_TYPE2_DMADISABLE_MASK (0 x1 << SYSC_TYPE2_DMADISABLE_SHIFT)
/*
* OCP SYSCONFIG bit shifts / masks TYPE3 .
* This is applicable for some IPs present in AM33XX
*/
#define SYSC_TYPE3_SIDLEMODE_SHIFT 0
#define SYSC_TYPE3_SIDLEMODE_MASK (0 x3 << SYSC_TYPE3_SIDLEMODE_SHIFT)
#define SYSC_TYPE3_MIDLEMODE_SHIFT 2
#define SYSC_TYPE3_MIDLEMODE_MASK (0 x3 << SYSC_TYPE3_MIDLEMODE_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 )
#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3 )
/* modulemode control type (SW or HW) */
#define MODULEMODE_HWCTRL 1
#define MODULEMODE_SWCTRL 2
#define DEBUG_OMAP2UART1_FLAGS 0
#define DEBUG_OMAP2UART2_FLAGS 0
#define DEBUG_OMAP2UART3_FLAGS 0
#define DEBUG_OMAP3UART3_FLAGS 0
#define DEBUG_OMAP3UART4_FLAGS 0
#define DEBUG_OMAP4UART3_FLAGS 0
#define DEBUG_OMAP4UART4_FLAGS 0
#define DEBUG_TI81XXUART1_FLAGS 0
#define DEBUG_TI81XXUART2_FLAGS 0
#define DEBUG_TI81XXUART3_FLAGS 0
#define DEBUG_AM33XXUART1_FLAGS 0
#define DEBUG_OMAPUART_FLAGS (HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET)
#ifdef CONFIG_OMAP_GPMC_DEBUG
#define DEBUG_OMAP_GPMC_HWMOD_FLAGS HWMOD_INIT_NO_RESET
#else
#define DEBUG_OMAP_GPMC_HWMOD_FLAGS 0
#endif
#if defined (CONFIG_DEBUG_OMAP2UART1)
#undef DEBUG_OMAP2UART1_FLAGS
#define DEBUG_OMAP2UART1_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_OMAP2UART2)
#undef DEBUG_OMAP2UART2_FLAGS
#define DEBUG_OMAP2UART2_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_OMAP2UART3)
#undef DEBUG_OMAP2UART3_FLAGS
#define DEBUG_OMAP2UART3_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_OMAP3UART3)
#undef DEBUG_OMAP3UART3_FLAGS
#define DEBUG_OMAP3UART3_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_OMAP3UART4)
#undef DEBUG_OMAP3UART4_FLAGS
#define DEBUG_OMAP3UART4_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_OMAP4UART3)
#undef DEBUG_OMAP4UART3_FLAGS
#define DEBUG_OMAP4UART3_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_OMAP4UART4)
#undef DEBUG_OMAP4UART4_FLAGS
#define DEBUG_OMAP4UART4_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_TI81XXUART1)
#undef DEBUG_TI81XXUART1_FLAGS
#define DEBUG_TI81XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_TI81XXUART2)
#undef DEBUG_TI81XXUART2_FLAGS
#define DEBUG_TI81XXUART2_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_TI81XXUART3)
#undef DEBUG_TI81XXUART3_FLAGS
#define DEBUG_TI81XXUART3_FLAGS DEBUG_OMAPUART_FLAGS
#elif defined (CONFIG_DEBUG_AM33XXUART1)
#undef DEBUG_AM33XXUART1_FLAGS
#define DEBUG_AM33XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
#endif
/**
* struct omap_hwmod_rst_info - IPs reset lines use by hwmod
* @ name : name of the reset line ( module local name )
* @ rst_shift : Offset of the reset bit
* @ st_shift : Offset of the reset status bit ( OMAP2 / 3 only )
*
* @ name should be something short , e . g . , " cpu0 " or " rst " . It is defined
* locally to the hwmod .
*/
struct omap_hwmod_rst_info {
const char *name;
u8 rst_shift;
u8 st_shift;
};
/**
* struct omap_hwmod_opt_clk - optional clocks used by this hwmod
* @ role : " sys " , " 32 k " , " tv " , etc - - for use in clk_get ( )
* @ clk : opt clock : OMAP clock name
* @ _ 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 *clk;
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_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 )
#define OCP_USER_DSP (1 << 2 )
#define OCP_USER_IVA (1 << 3 )
/* omap_hwmod_ocp_if.flags bits */
#define OCPIF_SWSUP_IDLE (1 << 0 )
#define OCPIF_CAN_BURST (1 << 1 )
/* omap_hwmod_ocp_if._int_flags possibilities */
#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0 )
/**
* 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
* @ clk : interface clock : OMAP clock name
* @ _ clk : pointer to the interface struct clk ( filled in at runtime )
* @ fw : interface firewall data
* @ width : OCP data width
* @ user : initiators using this interface ( see OCP_USER_ * macros above )
* @ flags : OCP interface flags ( see OCPIF_ * macros above )
* @ _ int_flags : internal flags ( see _ OCPIF_INT_FLAGS * 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 *clk;
struct clk *_clk;
struct list_head node;
union {
struct omap_hwmod_omap2_firewall omap2;
} fw;
u8 width;
u8 user;
u8 flags;
u8 _int_flags;
};
/* Macros for use in struct omap_hwmod_sysconfig */
/* Flags for use in omap_hwmod_sysconfig.idlemodes */
#define MASTER_STANDBY_SHIFT 4
#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 SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << 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)
#define MSTANDBY_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << 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_HAS_RESET_STATUS (1 << 7 )
#define SYSC_NO_CACHE (1 << 8 ) /* XXX SW flag, belongs elsewhere */
#define SYSC_HAS_RESET_STATUS (1 << 9 )
#define SYSC_HAS_DMADISABLE (1 << 10 )
/* omap_hwmod_sysconfig.clockact flags */
#define CLOCKACT_TEST_BOTH 0 x0
#define CLOCKACT_TEST_MAIN 0 x1
#define CLOCKACT_TEST_ICLK 0 x2
#define CLOCKACT_TEST_NONE 0 x3
/**
* struct omap_hwmod_class_sysconfig - hwmod class OCP_SYS * 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 )
* @ srst_udelay : Delay needed after doing a softreset in usecs
* @ 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 )
*
* @ sysc_fields : structure containing the offset positions of various bits in
* SYSCONFIG register . This can be populated using omap_hwmod_sysc_type1 or
* omap_hwmod_sysc_type2 defined in omap_hwmod_common_data . c depending on
* whether the device ip is compliant with the original PRCM protocol
* defined for OMAP2420 or the new PRCM protocol for new OMAP4 IPs .
* If the device follows a different scheme for the sysconfig register ,
* then this field has to be populated with the correct offset structure .
*/
struct omap_hwmod_class_sysconfig {
s32 rev_offs;
s32 sysc_offs;
s32 syss_offs;
u16 sysc_flags;
struct sysc_regbits *sysc_fields;
u8 srst_udelay;
u8 idlemodes;
};
/**
* struct omap_hwmod_omap2_prcm - OMAP2 / 3 - specific PRCM data
* @ module_offs : PRCM submodule offset from the start of the PRM / CM
* @ idlest_reg_id : IDLEST register ID ( e . g . , 3 for CM_IDLEST3 )
* @ idlest_idle_bit : register bit shift for CM_IDLEST slave idle 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 idlest_reg_id;
u8 idlest_idle_bit;
};
/*
* Possible values for struct omap_hwmod_omap4_prcm . flags
*
* HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT : Some IP blocks don ' t have a PRCM
* module - level context loss register associated with them ; this
* flag bit should be set in those cases
* HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET : Some IP blocks have a valid CLKCTRL
* offset of zero ; this flag bit should be set in those cases to
* distinguish from hwmods that have no clkctrl offset .
* HWMOD_OMAP4_CLKFWK_CLKCTR_CLOCK : Module clockctrl clock is managed
* by the common clock framework and not hwmod .
*/
#define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0 )
#define HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET (1 << 1 )
#define HWMOD_OMAP4_CLKFWK_CLKCTR_CLOCK (1 << 2 )
/**
* struct omap_hwmod_omap4_prcm - OMAP4 - specific PRCM data
* @ clkctrl_offs : offset of the PRCM clock control register
* @ rstctrl_offs : offset of the XXX_RSTCTRL register located in the PRM
* @ context_offs : offset of the RM_ * _ CONTEXT register
* @ lostcontext_mask : bitmask for selecting bits from RM_ * _ CONTEXT register
* @ rstst_reg : ( AM33XX only ) address of the XXX_RSTST register in the PRM
* @ submodule_wkdep_bit : bit shift of the WKDEP range
* @ flags : PRCM register capabilities for this IP block
* @ modulemode : allowable modulemodes
* @ context_lost_counter : Count of module level context lost
*
* If @ lostcontext_mask is not defined , context loss check code uses
* whole register without masking . @ lostcontext_mask should only be
* defined in cases where @ context_offs register is shared by two or
* more hwmods .
*/
struct omap_hwmod_omap4_prcm {
u16 clkctrl_offs;
u16 rstctrl_offs;
u16 rstst_offs;
u16 context_offs;
u32 lostcontext_mask;
u8 submodule_wkdep_bit;
u8 modulemode;
u8 flags;
int context_lost_counter;
};
/*
* 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_MSTANDBY : 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 . XXX probably belongs outside the main hwmod file
* XXX Should be HWMOD_SETUP_NO_RESET
* HWMOD_INIT_NO_IDLE : don ' t idle this module at boot - important for SDRAM
* controller , etc . XXX probably belongs outside the main hwmod file
* XXX Should be HWMOD_SETUP_NO_IDLE
* HWMOD_NO_OCP_AUTOIDLE : disable module autoidle ( OCP_SYSCONFIG . AUTOIDLE )
* when module is enabled , rather than the default , which is to
* enable autoidle
* HWMOD_SET_DEFAULT_CLOCKACT : program CLOCKACTIVITY bits at startup
* HWMOD_NO_IDLEST : this module does not have idle status - this is the case
* only for few initiator modules on OMAP2 & 3 .
* HWMOD_CONTROL_OPT_CLKS_IN_RESET : Enable all optional clocks during reset .
* This is needed for devices like DSS that require optional clocks enabled
* in order to complete the reset . Optional clocks will be disabled
* again after the reset .
* HWMOD_16BIT_REG : Module has 16 bit registers
* HWMOD_EXT_OPT_MAIN_CLK : The only main functional clock source for
* this IP block comes from an off - chip source and is not always
* enabled . This prevents the hwmod code from being able to
* enable and reset the IP block early . XXX Eventually it should
* be possible to query the clock framework for this information .
* HWMOD_BLOCK_WFI : Some OMAP peripherals apparently don ' t work
* correctly if the MPU is allowed to go idle while the
* peripherals are active . This is apparently true for the I2C on
* OMAP2420 , and also the EMAC on AM3517 / 3505 . It ' s unlikely that
* this is really true - - we ' re probably not configuring something
* correctly , or this is being abused to deal with some PM latency
* issues - - but we ' re currently suffering from a shortage of
* folks who are able to track these issues down properly .
* HWMOD_FORCE_MSTANDBY : Always keep MIDLEMODE bits cleared so that device
* is kept in force - standby mode . Failing to do so causes PM problems
* with musb on OMAP3630 at least . Note that musb has a dedicated register
* to control MSTANDBY signal when MIDLEMODE is set to force - standby .
* HWMOD_SWSUP_SIDLE_ACT : omap_hwmod code should manually bring the module
* out of idle , but rely on smart - idle to the put it back in idle ,
* so the wakeups are still functional ( Only known case for now is UART )
* HWMOD_RECONFIG_IO_CHAIN : omap_hwmod code needs to reconfigure wake - up
* events by calling _ reconfigure_io_chain ( ) when a device is enabled
* or idled .
* HWMOD_OPT_CLKS_NEEDED : The optional clocks are needed for the module to
* operate and they need to be handled at the same time as the main_clk .
* HWMOD_NO_IDLE : Do not idle the hwmod at all . Useful to handle certain
* IPs like CPSW on DRA7 , where clocks to this module cannot be disabled .
* HWMOD_CLKDM_NOAUTO : Allows the hwmod ' s clockdomain to be prevented from
* entering HW_AUTO while hwmod is active . This is needed to workaround
* some modules which don ' t function correctly with HW_AUTO . For example ,
* DCAN on DRA7x SoC needs this to workaround errata i893 .
*/
#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_NO_OCP_AUTOIDLE (1 << 4 )
#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 5 )
#define HWMOD_NO_IDLEST (1 << 6 )
#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7 )
#define HWMOD_16BIT_REG (1 << 8 )
#define HWMOD_EXT_OPT_MAIN_CLK (1 << 9 )
#define HWMOD_BLOCK_WFI (1 << 10 )
#define HWMOD_FORCE_MSTANDBY (1 << 11 )
#define HWMOD_SWSUP_SIDLE_ACT (1 << 12 )
#define HWMOD_RECONFIG_IO_CHAIN (1 << 13 )
#define HWMOD_OPT_CLKS_NEEDED (1 << 14 )
#define HWMOD_NO_IDLE (1 << 15 )
#define HWMOD_CLKDM_NOAUTO (1 << 16 )
/*
* 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_SYSCONFIG_LOADED : set when the OCP_SYSCONFIG value has been cached
* _ HWMOD_SKIP_ENABLE : set if hwmod enabled during init ( HWMOD_INIT_NO_IDLE ) -
* causes the first call to _ enable ( ) to only update the pinmux
*/
#define _HWMOD_NO_MPU_PORT (1 << 0 )
#define _HWMOD_SYSCONFIG_LOADED (1 << 1 )
#define _HWMOD_SKIP_ENABLE (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
#ifdef CONFIG_PM
#define _HWMOD_STATE_DEFAULT _HWMOD_STATE_IDLE
#else
#define _HWMOD_STATE_DEFAULT _HWMOD_STATE_ENABLED
#endif
/**
* struct omap_hwmod_class - the type of an IP block
* @ name : name of the hwmod_class
* @ sysc : device SYSCONFIG / SYSSTATUS register data
* @ pre_shutdown : ptr to fn to be executed immediately prior to device shutdown
* @ reset : ptr to fn to be executed in place of the standard hwmod reset fn
* @ lock : ptr to fn to be executed to lock IP registers
* @ unlock : ptr to fn to be executed to unlock IP registers
*
* Represent the class of a OMAP hardware " modules " ( e . g . timer ,
* smartreflex , gpio , uart . . . )
*
* @ pre_shutdown is a function that will be run immediately before
* hwmod clocks are disabled , etc . It is intended for use for hwmods
* like the MPU watchdog , which cannot be disabled with the standard
* omap_hwmod_shutdown ( ) . The function should return 0 upon success ,
* or some negative error upon failure . Returning an error will cause
* omap_hwmod_shutdown ( ) to abort the device shutdown and return an
* error .
*
* If @ reset is defined , then the function it points to will be
* executed in place of the standard hwmod _ reset ( ) code in
* mach - omap2 / omap_hwmod . c . This is needed for IP blocks which have
* unusual reset sequences - usually processor IP blocks like the IVA .
*/
struct omap_hwmod_class {
const char *name;
struct omap_hwmod_class_sysconfig *sysc;
int (*pre_shutdown)(struct omap_hwmod *oh);
int (*reset)(struct omap_hwmod *oh);
void (*lock)(struct omap_hwmod *oh);
void (*unlock)(struct omap_hwmod *oh);
};
/**
* struct omap_hwmod - integration data for OMAP hardware " modules " ( IP blocks )
* @ name : name of the hwmod
* @ class : struct omap_hwmod_class * to the class of this hwmod
* @ od : struct omap_device currently associated with this hwmod ( internal use )
* @ prcm : PRCM data pertaining to this hwmod
* @ main_clk : main clock : OMAP clock name
* @ _ clk : pointer to the main struct clk ( filled in at runtime )
* @ opt_clks : other device clocks that drivers can request ( 0 . . * )
* @ voltdm : pointer to voltage domain ( filled in at runtime )
* @ dev_attr : arbitrary device attributes that can be passed to the driver
* @ _ sysc_cache : internal - use hwmod flags
* @ mpu_rt_idx : index of device address space for register target ( for DT boot )
* @ _ mpu_rt_va : cached register target start address ( internal use )
* @ _ mpu_port : cached MPU register target slave ( internal use )
* @ 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
* @ _ postsetup_state : internal - use state to leave the hwmod in after _ setup ( )
* @ flags : hwmod flags ( documented below )
* @ _ lock : spinlock serializing operations on this hwmod
* @ node : list node for hwmod list ( internal use )
* @ parent_hwmod : ( temporary ) a pointer to the hierarchical parent of this hwmod
*
* @ main_clk refers 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 .
*
* @ masters and @ slaves are now deprecated .
*
* @ parent_hwmod is temporary ; there should be no need for it , as this
* information should already be expressed in the OCP interface
* structures . @ parent_hwmod is present as a workaround until we improve
* handling for hwmods with multiple parents ( e . g . , OMAP4 + DSS with
* multiple register targets across different interconnects ) .
*/
struct omap_hwmod {
const char *name;
struct omap_hwmod_class *class ;
struct omap_device *od;
struct omap_hwmod_rst_info *rst_lines;
union {
struct omap_hwmod_omap2_prcm omap2;
struct omap_hwmod_omap4_prcm omap4;
} prcm;
const char *main_clk;
struct clk *_clk;
struct omap_hwmod_opt_clk *opt_clks;
const char *clkdm_name;
struct clockdomain *clkdm;
struct list_head slave_ports; /* connect to *_TA */
void *dev_attr;
u32 _sysc_cache;
void __iomem *_mpu_rt_va;
spinlock_t _lock;
struct lock_class_key hwmod_key; /* unique lock class */
struct list_head node;
struct omap_hwmod_ocp_if *_mpu_port;
u32 flags;
u8 mpu_rt_idx;
u8 response_lat;
u8 rst_lines_cnt;
u8 opt_clks_cnt;
u8 slaves_cnt;
u8 hwmods_cnt;
u8 _int_flags;
u8 _state;
u8 _postsetup_state;
struct omap_hwmod *parent_hwmod;
};
#ifdef CONFIG_OMAP_HWMOD
struct device_node;
struct omap_hwmod *omap_hwmod_lookup(const char *name);
int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data),
void *data);
int omap_hwmod_parse_module_range(struct omap_hwmod *oh,
struct device_node *np,
struct resource *res);
struct ti_sysc_module_data;
struct ti_sysc_cookie;
int omap_hwmod_init_module(struct device *dev,
const struct ti_sysc_module_data *data,
struct ti_sysc_cookie *cookie);
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_assert_hardreset(struct omap_hwmod *oh, const char *name);
int omap_hwmod_deassert_hardreset(struct omap_hwmod *oh, const char *name);
void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs);
u32 omap_hwmod_read(struct omap_hwmod *oh, u16 reg_offs);
int omap_hwmod_softreset(struct omap_hwmod *oh);
void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh);
int omap_hwmod_for_each_by_class(const char *classname,
int (*fn)(struct omap_hwmod *oh,
void *user),
void *user);
int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state);
extern void __init omap_hwmod_init(void );
#else /* CONFIG_OMAP_HWMOD */
static inline int
omap_hwmod_for_each_by_class(const char *classname,
int (*fn)(struct omap_hwmod *oh, void *user),
void *user)
{
return 0 ;
}
#endif /* CONFIG_OMAP_HWMOD */
/*
* Chip variant - specific hwmod init routines - XXX should be converted
* to use initcalls once the initial boot ordering is straightened out
*/
extern int omap2420_hwmod_init(void );
extern int omap2430_hwmod_init(void );
extern int omap3xxx_hwmod_init(void );
extern int dm814x_hwmod_init(void );
extern int dm816x_hwmod_init(void );
extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois);
#endif
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(vorverarbeitet am 2026-09-27)
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