--- /dev/null
+ /*
+ * omap_hwmod macros, structures
+ *
+ * Copyright (C) 2009-2011 Nokia Corporation
+ * Copyright (C) 2012 Texas Instruments, Inc.
+ * Paul Walmsley
+ *
+ * Created in collaboration with (alphabetical order): Benoît 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.
+ * 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
+ * - add pinmuxing
+ * - 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 omap_hwmod_sysc_fields omap_hwmod_sysc_type1;
+ extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
+ extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type3;
+
+ /*
+ * 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 (0x3 << SYSC_TYPE1_MIDLEMODE_SHIFT)
+ #define SYSC_TYPE1_CLOCKACTIVITY_SHIFT 8
+ #define SYSC_TYPE1_CLOCKACTIVITY_MASK (0x3 << SYSC_TYPE1_CLOCKACTIVITY_SHIFT)
+ #define SYSC_TYPE1_SIDLEMODE_SHIFT 3
+ #define SYSC_TYPE1_SIDLEMODE_MASK (0x3 << 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 (0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
+ #define SYSC_TYPE2_MIDLEMODE_SHIFT 4
+ #define SYSC_TYPE2_MIDLEMODE_MASK (0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
+ #define SYSC_TYPE2_DMADISABLE_SHIFT 16
+ #define SYSC_TYPE2_DMADISABLE_MASK (0x1 << 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 (0x3 << SYSC_TYPE3_SIDLEMODE_SHIFT)
+ #define SYSC_TYPE3_MIDLEMODE_SHIFT 2
+ #define SYSC_TYPE3_MIDLEMODE_MASK (0x3 << 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
+
+
+ /**
+ * struct omap_hwmod_mux_info - hwmod specific mux configuration
+ * @pads: array of omap_device_pad entries
+ * @nr_pads: number of omap_device_pad entries
+ *
+ * Note that this is currently built during init as needed.
+ */
+ struct omap_hwmod_mux_info {
+ int nr_pads;
+ struct omap_device_pad *pads;
+ int nr_pads_dynamic;
+ struct omap_device_pad **pads_dynamic;
+ int *irqs;
+ bool enabled;
+ };
+
+ /**
+ * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod
+ * @name: name of the IRQ channel (module local name)
+ * @irq: IRQ channel ID (should be non-negative except -1 = terminator)
+ *
+ * @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_irq_info {
+ const char *name;
+ s16 irq;
+ };
+
+ /**
+ * struct omap_hwmod_dma_info - DMA channels used by the hwmod
+ * @name: name of the DMA channel (module local name)
+ * @dma_req: DMA request ID (should be non-negative except -1 = terminator)
+ *
+ * @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;
+ s16 dma_req;
+ };
+
+ /**
+ * 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", "32k", "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_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) /* XXX does not belong */
+ #define ADDR_TYPE_RT (1 << 1)
+
+ /**
+ * struct omap_hwmod_addr_space - address space handled by the hwmod
+ * @name: name of the address space
+ * @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 {
+ const char *name;
+ 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)
+ #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;
+ 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 0x0
+ #define CLOCKACT_TEST_MAIN 0x1
+ #define CLOCKACT_TEST_ICLK 0x2
+ #define CLOCKACT_TEST_NONE 0x3
+
+ /**
+ * struct omap_hwmod_sysc_fields - hwmod OCP_SYSCONFIG register field offsets.
+ * @midle_shift: Offset of the midle bit
+ * @clkact_shift: Offset of the clockactivity bit
+ * @sidle_shift: Offset of the sidle bit
+ * @enwkup_shift: Offset of the enawakeup bit
+ * @srst_shift: Offset of the softreset bit
+ * @autoidle_shift: Offset of the autoidle bit
+ * @dmadisable_shift: Offset of the dmadisable bit
+ */
+ struct omap_hwmod_sysc_fields {
+ u8 midle_shift;
+ u8 clkact_shift;
+ u8 sidle_shift;
+ u8 enwkup_shift;
+ u8 srst_shift;
+ u8 autoidle_shift;
+ u8 dmadisable_shift;
+ };
+
+ /**
+ * 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 {
+ u32 rev_offs;
+ u32 sysc_offs;
+ u32 syss_offs;
+ u16 sysc_flags;
+ struct omap_hwmod_sysc_fields *sysc_fields;
+ u8 srst_udelay;
+ u8 idlemodes;
+ 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;
+ };
+
+ /*
+ * 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
+ */
+ #define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0)
+
+ /**
+ * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
+ * @clkctrl_reg: PRCM address of the clock control register
+ * @rstctrl_reg: address of the XXX_RSTCTRL register located in the PRM
+ * @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
+ *
+ * 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;
+ };
+
+
+ /*
+ * 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. 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 16bit 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.
+ */
+ #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)
+
+ /*
+ * 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
+ * _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_WAKEUP_ENABLED (1 << 1)
+ #define _HWMOD_SYSCONFIG_LOADED (1 << 2)
+ #define _HWMOD_SKIP_ENABLE (1 << 3)
+
+ /*
+ * 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_class - the type of an IP block
+ * @name: name of the hwmod_class
+ * @sysc: device SYSCONFIG/SYSSTATUS register data
+ * @rev: revision of the IP class
+ * @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
+ *
+ * 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;
+ u32 rev;
+ int (*pre_shutdown)(struct omap_hwmod *oh);
+ int (*reset)(struct omap_hwmod *oh);
+ };
+
+ /**
+ * struct omap_hwmod_link - internal structure linking hwmods with ocp_ifs
+ * @ocp_if: OCP interface structure record pointer
+ * @node: list_head pointing to next struct omap_hwmod_link in a list
+ */
+ struct omap_hwmod_link {
+ struct omap_hwmod_ocp_if *ocp_if;
+ struct list_head node;
+ };
+
+ /**
+ * 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)
+ * @mpu_irqs: ptr to an array of MPU IRQs
+ * @sdma_reqs: ptr to an array of System DMA request IDs
+ * @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_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)
+ *
+ * @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.
+ */
+ struct omap_hwmod {
+ const char *name;
+ struct omap_hwmod_class *class;
+ struct omap_device *od;
+ struct omap_hwmod_mux_info *mux;
+ struct omap_hwmod_irq_info *mpu_irqs;
+ struct omap_hwmod_dma_info *sdma_reqs;
+ 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;
+ char *clkdm_name;
+ struct clockdomain *clkdm;
+ struct list_head master_ports; /* connect to *_IA */
+ struct list_head slave_ports; /* connect to *_TA */
+ void *dev_attr;
+ u32 _sysc_cache;
+ void __iomem *_mpu_rt_va;
+ spinlock_t _lock;
+ struct list_head node;
+ struct omap_hwmod_ocp_if *_mpu_port;
+ u16 flags;
+ u8 response_lat;
+ u8 rst_lines_cnt;
+ u8 opt_clks_cnt;
+ u8 masters_cnt;
+ u8 slaves_cnt;
+ u8 hwmods_cnt;
+ u8 _int_flags;
+ u8 _state;
+ u8 _postsetup_state;
+ };
+
+ 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 __init omap_hwmod_setup_one(const char *name);
+
+ 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);
+ int omap_hwmod_read_hardreset(struct omap_hwmod *oh, const char *name);
+
+ int omap_hwmod_enable_clocks(struct omap_hwmod *oh);
+ int omap_hwmod_disable_clocks(struct omap_hwmod *oh);
+
+ int omap_hwmod_set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode);
+ int omap_hwmod_set_ocp_autoidle(struct omap_hwmod *oh, u8 autoidle);
+
+ int omap_hwmod_reset(struct omap_hwmod *oh);
+ void omap_hwmod_ocp_barrier(struct omap_hwmod *oh);
+
+ 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);
+
+ int omap_hwmod_count_resources(struct omap_hwmod *oh);
+ int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res);
+ int omap_hwmod_fill_dma_resources(struct omap_hwmod *oh, struct resource *res);
+ int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type,
+ const char *name, struct resource *res);
+
+ struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh);
+ void __iomem *omap_hwmod_get_mpu_rt_va(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_enable_wakeup(struct omap_hwmod *oh);
+ int omap_hwmod_disable_wakeup(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);
+ int omap_hwmod_get_context_loss_count(struct omap_hwmod *oh);
+
+ int omap_hwmod_no_setup_reset(struct omap_hwmod *oh);
+
+ int omap_hwmod_pad_route_irq(struct omap_hwmod *oh, int pad_idx, int irq_idx);
+
+ extern void __init omap_hwmod_init(void);
+
+ const char *omap_hwmod_get_main_clk(struct omap_hwmod *oh);
+
+ /*
+ * 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 omap44xx_hwmod_init(void);
+ extern int am33xx_hwmod_init(void);
+
+ extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois);
+
+ #endif
projects / mirror_ubuntu-artful-kernel.git / commitdiff