1/* 2 * omap_hwmod macros, structures 3 * 4 * Copyright (C) 2009-2011 Nokia Corporation 5 * Copyright (C) 2011-2012 Texas Instruments, Inc. 6 * Paul Walmsley 7 * 8 * Created in collaboration with (alphabetical order): Benoît Cousson, 9 * Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari 10 * Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 * 16 * These headers and macros are used to define OMAP on-chip module 17 * data and their integration with other OMAP modules and Linux. 18 * Copious documentation and references can also be found in the 19 * omap_hwmod code, in arch/arm/mach-omap2/omap_hwmod.c (as of this 20 * writing). 21 * 22 * To do: 23 * - add interconnect error log structures 24 * - add pinmuxing 25 * - init_conn_id_bit (CONNID_BIT_VECTOR) 26 * - implement default hwmod SMS/SDRC flags? 27 * - move Linux-specific data ("non-ROM data") out 28 * 29 */ 30#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H 31#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H 32 33#include <linux/kernel.h> 34#include <linux/init.h> 35#include <linux/list.h> 36#include <linux/ioport.h> 37#include <linux/spinlock.h> 38 39struct omap_device; 40 41extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type1; 42extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2; 43extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type3; 44 45/* 46 * OCP SYSCONFIG bit shifts/masks TYPE1. These are for IPs compliant 47 * with the original PRCM protocol defined for OMAP2420 48 */ 49#define SYSC_TYPE1_MIDLEMODE_SHIFT 12 50#define SYSC_TYPE1_MIDLEMODE_MASK (0x3 << SYSC_TYPE1_MIDLEMODE_SHIFT) 51#define SYSC_TYPE1_CLOCKACTIVITY_SHIFT 8 52#define SYSC_TYPE1_CLOCKACTIVITY_MASK (0x3 << SYSC_TYPE1_CLOCKACTIVITY_SHIFT) 53#define SYSC_TYPE1_SIDLEMODE_SHIFT 3 54#define SYSC_TYPE1_SIDLEMODE_MASK (0x3 << SYSC_TYPE1_SIDLEMODE_SHIFT) 55#define SYSC_TYPE1_ENAWAKEUP_SHIFT 2 56#define SYSC_TYPE1_ENAWAKEUP_MASK (1 << SYSC_TYPE1_ENAWAKEUP_SHIFT) 57#define SYSC_TYPE1_SOFTRESET_SHIFT 1 58#define SYSC_TYPE1_SOFTRESET_MASK (1 << SYSC_TYPE1_SOFTRESET_SHIFT) 59#define SYSC_TYPE1_AUTOIDLE_SHIFT 0 60#define SYSC_TYPE1_AUTOIDLE_MASK (1 << SYSC_TYPE1_AUTOIDLE_SHIFT) 61 62/* 63 * OCP SYSCONFIG bit shifts/masks TYPE2. These are for IPs compliant 64 * with the new PRCM protocol defined for new OMAP4 IPs. 65 */ 66#define SYSC_TYPE2_SOFTRESET_SHIFT 0 67#define SYSC_TYPE2_SOFTRESET_MASK (1 << SYSC_TYPE2_SOFTRESET_SHIFT) 68#define SYSC_TYPE2_SIDLEMODE_SHIFT 2 69#define SYSC_TYPE2_SIDLEMODE_MASK (0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT) 70#define SYSC_TYPE2_MIDLEMODE_SHIFT 4 71#define SYSC_TYPE2_MIDLEMODE_MASK (0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT) 72#define SYSC_TYPE2_DMADISABLE_SHIFT 16 73#define SYSC_TYPE2_DMADISABLE_MASK (0x1 << SYSC_TYPE2_DMADISABLE_SHIFT) 74 75/* 76 * OCP SYSCONFIG bit shifts/masks TYPE3. 77 * This is applicable for some IPs present in AM33XX 78 */ 79#define SYSC_TYPE3_SIDLEMODE_SHIFT 0 80#define SYSC_TYPE3_SIDLEMODE_MASK (0x3 << SYSC_TYPE3_SIDLEMODE_SHIFT) 81#define SYSC_TYPE3_MIDLEMODE_SHIFT 2 82#define SYSC_TYPE3_MIDLEMODE_MASK (0x3 << SYSC_TYPE3_MIDLEMODE_SHIFT) 83 84/* OCP SYSSTATUS bit shifts/masks */ 85#define SYSS_RESETDONE_SHIFT 0 86#define SYSS_RESETDONE_MASK (1 << SYSS_RESETDONE_SHIFT) 87 88/* Master standby/slave idle mode flags */ 89#define HWMOD_IDLEMODE_FORCE (1 << 0) 90#define HWMOD_IDLEMODE_NO (1 << 1) 91#define HWMOD_IDLEMODE_SMART (1 << 2) 92#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3) 93 94/* modulemode control type (SW or HW) */ 95#define MODULEMODE_HWCTRL 1 96#define MODULEMODE_SWCTRL 2 97 98#define DEBUG_OMAP2UART1_FLAGS 0 99#define DEBUG_OMAP2UART2_FLAGS 0 100#define DEBUG_OMAP2UART3_FLAGS 0 101#define DEBUG_OMAP3UART3_FLAGS 0 102#define DEBUG_OMAP3UART4_FLAGS 0 103#define DEBUG_OMAP4UART3_FLAGS 0 104#define DEBUG_OMAP4UART4_FLAGS 0 105#define DEBUG_TI81XXUART1_FLAGS 0 106#define DEBUG_TI81XXUART2_FLAGS 0 107#define DEBUG_TI81XXUART3_FLAGS 0 108#define DEBUG_AM33XXUART1_FLAGS 0 109 110#define DEBUG_OMAPUART_FLAGS (HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET) 111 112#if defined(CONFIG_DEBUG_OMAP2UART1) 113#undef DEBUG_OMAP2UART1_FLAGS 114#define DEBUG_OMAP2UART1_FLAGS DEBUG_OMAPUART_FLAGS 115#elif defined(CONFIG_DEBUG_OMAP2UART2) 116#undef DEBUG_OMAP2UART2_FLAGS 117#define DEBUG_OMAP2UART2_FLAGS DEBUG_OMAPUART_FLAGS 118#elif defined(CONFIG_DEBUG_OMAP2UART3) 119#undef DEBUG_OMAP2UART3_FLAGS 120#define DEBUG_OMAP2UART3_FLAGS DEBUG_OMAPUART_FLAGS 121#elif defined(CONFIG_DEBUG_OMAP3UART3) 122#undef DEBUG_OMAP3UART3_FLAGS 123#define DEBUG_OMAP3UART3_FLAGS DEBUG_OMAPUART_FLAGS 124#elif defined(CONFIG_DEBUG_OMAP3UART4) 125#undef DEBUG_OMAP3UART4_FLAGS 126#define DEBUG_OMAP3UART4_FLAGS DEBUG_OMAPUART_FLAGS 127#elif defined(CONFIG_DEBUG_OMAP4UART3) 128#undef DEBUG_OMAP4UART3_FLAGS 129#define DEBUG_OMAP4UART3_FLAGS DEBUG_OMAPUART_FLAGS 130#elif defined(CONFIG_DEBUG_OMAP4UART4) 131#undef DEBUG_OMAP4UART4_FLAGS 132#define DEBUG_OMAP4UART4_FLAGS DEBUG_OMAPUART_FLAGS 133#elif defined(CONFIG_DEBUG_TI81XXUART1) 134#undef DEBUG_TI81XXUART1_FLAGS 135#define DEBUG_TI81XXUART1_FLAGS DEBUG_OMAPUART_FLAGS 136#elif defined(CONFIG_DEBUG_TI81XXUART2) 137#undef DEBUG_TI81XXUART2_FLAGS 138#define DEBUG_TI81XXUART2_FLAGS DEBUG_OMAPUART_FLAGS 139#elif defined(CONFIG_DEBUG_TI81XXUART3) 140#undef DEBUG_TI81XXUART3_FLAGS 141#define DEBUG_TI81XXUART3_FLAGS DEBUG_OMAPUART_FLAGS 142#elif defined(CONFIG_DEBUG_AM33XXUART1) 143#undef DEBUG_AM33XXUART1_FLAGS 144#define DEBUG_AM33XXUART1_FLAGS DEBUG_OMAPUART_FLAGS 145#endif 146 147/** 148 * struct omap_hwmod_mux_info - hwmod specific mux configuration 149 * @pads: array of omap_device_pad entries 150 * @nr_pads: number of omap_device_pad entries 151 * 152 * Note that this is currently built during init as needed. 153 */ 154struct omap_hwmod_mux_info { 155 int nr_pads; 156 struct omap_device_pad *pads; 157 int nr_pads_dynamic; 158 struct omap_device_pad **pads_dynamic; 159 int *irqs; 160 bool enabled; 161}; 162 163/** 164 * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod 165 * @name: name of the IRQ channel (module local name) 166 * @irq: IRQ channel ID (should be non-negative except -1 = terminator) 167 * 168 * @name should be something short, e.g., "tx" or "rx". It is for use 169 * by platform_get_resource_byname(). It is defined locally to the 170 * hwmod. 171 */ 172struct omap_hwmod_irq_info { 173 const char *name; 174 s16 irq; 175}; 176 177/** 178 * struct omap_hwmod_dma_info - DMA channels used by the hwmod 179 * @name: name of the DMA channel (module local name) 180 * @dma_req: DMA request ID (should be non-negative except -1 = terminator) 181 * 182 * @name should be something short, e.g., "tx" or "rx". It is for use 183 * by platform_get_resource_byname(). It is defined locally to the 184 * hwmod. 185 */ 186struct omap_hwmod_dma_info { 187 const char *name; 188 s16 dma_req; 189}; 190 191/** 192 * struct omap_hwmod_rst_info - IPs reset lines use by hwmod 193 * @name: name of the reset line (module local name) 194 * @rst_shift: Offset of the reset bit 195 * @st_shift: Offset of the reset status bit (OMAP2/3 only) 196 * 197 * @name should be something short, e.g., "cpu0" or "rst". It is defined 198 * locally to the hwmod. 199 */ 200struct omap_hwmod_rst_info { 201 const char *name; 202 u8 rst_shift; 203 u8 st_shift; 204}; 205 206/** 207 * struct omap_hwmod_opt_clk - optional clocks used by this hwmod 208 * @role: "sys", "32k", "tv", etc -- for use in clk_get() 209 * @clk: opt clock: OMAP clock name 210 * @_clk: pointer to the struct clk (filled in at runtime) 211 * 212 * The module's interface clock and main functional clock should not 213 * be added as optional clocks. 214 */ 215struct omap_hwmod_opt_clk { 216 const char *role; 217 const char *clk; 218 struct clk *_clk; 219}; 220 221 222/* omap_hwmod_omap2_firewall.flags bits */ 223#define OMAP_FIREWALL_L3 (1 << 0) 224#define OMAP_FIREWALL_L4 (1 << 1) 225 226/** 227 * struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data 228 * @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_* 229 * @l4_fw_region: L4 firewall region ID 230 * @l4_prot_group: L4 protection group ID 231 * @flags: (see omap_hwmod_omap2_firewall.flags macros above) 232 */ 233struct omap_hwmod_omap2_firewall { 234 u8 l3_perm_bit; 235 u8 l4_fw_region; 236 u8 l4_prot_group; 237 u8 flags; 238}; 239 240 241/* 242 * omap_hwmod_addr_space.flags bits 243 * 244 * ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init. 245 * ADDR_TYPE_RT: Address space contains module register target data. 246 */ 247#define ADDR_MAP_ON_INIT (1 << 0) /* XXX does not belong */ 248#define ADDR_TYPE_RT (1 << 1) 249 250/** 251 * struct omap_hwmod_addr_space - address space handled by the hwmod 252 * @name: name of the address space 253 * @pa_start: starting physical address 254 * @pa_end: ending physical address 255 * @flags: (see omap_hwmod_addr_space.flags macros above) 256 * 257 * Address space doesn't necessarily follow physical interconnect 258 * structure. GPMC is one example. 259 */ 260struct omap_hwmod_addr_space { 261 const char *name; 262 u32 pa_start; 263 u32 pa_end; 264 u8 flags; 265}; 266 267 268/* 269 * omap_hwmod_ocp_if.user bits: these indicate the initiators that use this 270 * interface to interact with the hwmod. Used to add sleep dependencies 271 * when the module is enabled or disabled. 272 */ 273#define OCP_USER_MPU (1 << 0) 274#define OCP_USER_SDMA (1 << 1) 275#define OCP_USER_DSP (1 << 2) 276#define OCP_USER_IVA (1 << 3) 277 278/* omap_hwmod_ocp_if.flags bits */ 279#define OCPIF_SWSUP_IDLE (1 << 0) 280#define OCPIF_CAN_BURST (1 << 1) 281 282/* omap_hwmod_ocp_if._int_flags possibilities */ 283#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0) 284 285 286/** 287 * struct omap_hwmod_ocp_if - OCP interface data 288 * @master: struct omap_hwmod that initiates OCP transactions on this link 289 * @slave: struct omap_hwmod that responds to OCP transactions on this link 290 * @addr: address space associated with this link 291 * @clk: interface clock: OMAP clock name 292 * @_clk: pointer to the interface struct clk (filled in at runtime) 293 * @fw: interface firewall data 294 * @width: OCP data width 295 * @user: initiators using this interface (see OCP_USER_* macros above) 296 * @flags: OCP interface flags (see OCPIF_* macros above) 297 * @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above) 298 * 299 * It may also be useful to add a tag_cnt field for OCP2.x devices. 300 * 301 * Parameter names beginning with an underscore are managed internally by 302 * the omap_hwmod code and should not be set during initialization. 303 */ 304struct omap_hwmod_ocp_if { 305 struct omap_hwmod *master; 306 struct omap_hwmod *slave; 307 struct omap_hwmod_addr_space *addr; 308 const char *clk; 309 struct clk *_clk; 310 union { 311 struct omap_hwmod_omap2_firewall omap2; 312 } fw; 313 u8 width; 314 u8 user; 315 u8 flags; 316 u8 _int_flags; 317}; 318 319 320/* Macros for use in struct omap_hwmod_sysconfig */ 321 322/* Flags for use in omap_hwmod_sysconfig.idlemodes */ 323#define MASTER_STANDBY_SHIFT 4 324#define SLAVE_IDLE_SHIFT 0 325#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT) 326#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT) 327#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT) 328#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT) 329#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT) 330#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT) 331#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT) 332#define MSTANDBY_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << MASTER_STANDBY_SHIFT) 333 334/* omap_hwmod_sysconfig.sysc_flags capability flags */ 335#define SYSC_HAS_AUTOIDLE (1 << 0) 336#define SYSC_HAS_SOFTRESET (1 << 1) 337#define SYSC_HAS_ENAWAKEUP (1 << 2) 338#define SYSC_HAS_EMUFREE (1 << 3) 339#define SYSC_HAS_CLOCKACTIVITY (1 << 4) 340#define SYSC_HAS_SIDLEMODE (1 << 5) 341#define SYSC_HAS_MIDLEMODE (1 << 6) 342#define SYSS_HAS_RESET_STATUS (1 << 7) 343#define SYSC_NO_CACHE (1 << 8) /* XXX SW flag, belongs elsewhere */ 344#define SYSC_HAS_RESET_STATUS (1 << 9) 345#define SYSC_HAS_DMADISABLE (1 << 10) 346 347/* omap_hwmod_sysconfig.clockact flags */ 348#define CLOCKACT_TEST_BOTH 0x0 349#define CLOCKACT_TEST_MAIN 0x1 350#define CLOCKACT_TEST_ICLK 0x2 351#define CLOCKACT_TEST_NONE 0x3 352 353/** 354 * struct omap_hwmod_sysc_fields - hwmod OCP_SYSCONFIG register field offsets. 355 * @midle_shift: Offset of the midle bit 356 * @clkact_shift: Offset of the clockactivity bit 357 * @sidle_shift: Offset of the sidle bit 358 * @enwkup_shift: Offset of the enawakeup bit 359 * @srst_shift: Offset of the softreset bit 360 * @autoidle_shift: Offset of the autoidle bit 361 * @dmadisable_shift: Offset of the dmadisable bit 362 */ 363struct omap_hwmod_sysc_fields { 364 u8 midle_shift; 365 u8 clkact_shift; 366 u8 sidle_shift; 367 u8 enwkup_shift; 368 u8 srst_shift; 369 u8 autoidle_shift; 370 u8 dmadisable_shift; 371}; 372 373/** 374 * struct omap_hwmod_class_sysconfig - hwmod class OCP_SYS* data 375 * @rev_offs: IP block revision register offset (from module base addr) 376 * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr) 377 * @syss_offs: OCP_SYSSTATUS register offset (from module base addr) 378 * @srst_udelay: Delay needed after doing a softreset in usecs 379 * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART} 380 * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported 381 * @clockact: the default value of the module CLOCKACTIVITY bits 382 * 383 * @clockact describes to the module which clocks are likely to be 384 * disabled when the PRCM issues its idle request to the module. Some 385 * modules have separate clockdomains for the interface clock and main 386 * functional clock, and can check whether they should acknowledge the 387 * idle request based on the internal module functionality that has 388 * been associated with the clocks marked in @clockact. This field is 389 * only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below) 390 * 391 * @sysc_fields: structure containing the offset positions of various bits in 392 * SYSCONFIG register. This can be populated using omap_hwmod_sysc_type1 or 393 * omap_hwmod_sysc_type2 defined in omap_hwmod_common_data.c depending on 394 * whether the device ip is compliant with the original PRCM protocol 395 * defined for OMAP2420 or the new PRCM protocol for new OMAP4 IPs. 396 * If the device follows a different scheme for the sysconfig register , 397 * then this field has to be populated with the correct offset structure. 398 */ 399struct omap_hwmod_class_sysconfig { 400 u32 rev_offs; 401 u32 sysc_offs; 402 u32 syss_offs; 403 u16 sysc_flags; 404 struct omap_hwmod_sysc_fields *sysc_fields; 405 u8 srst_udelay; 406 u8 idlemodes; 407 u8 clockact; 408}; 409 410/** 411 * struct omap_hwmod_omap2_prcm - OMAP2/3-specific PRCM data 412 * @module_offs: PRCM submodule offset from the start of the PRM/CM 413 * @prcm_reg_id: PRCM register ID (e.g., 3 for CM_AUTOIDLE3) 414 * @module_bit: register bit shift for AUTOIDLE, WKST, WKEN, GRPSEL regs 415 * @idlest_reg_id: IDLEST register ID (e.g., 3 for CM_IDLEST3) 416 * @idlest_idle_bit: register bit shift for CM_IDLEST slave idle bit 417 * @idlest_stdby_bit: register bit shift for CM_IDLEST master standby bit 418 * 419 * @prcm_reg_id and @module_bit are specific to the AUTOIDLE, WKST, 420 * WKEN, GRPSEL registers. In an ideal world, no extra information 421 * would be needed for IDLEST information, but alas, there are some 422 * exceptions, so @idlest_reg_id, @idlest_idle_bit, @idlest_stdby_bit 423 * are needed for the IDLEST registers (c.f. 2430 I2CHS, 3430 USBHOST) 424 */ 425struct omap_hwmod_omap2_prcm { 426 s16 module_offs; 427 u8 prcm_reg_id; 428 u8 module_bit; 429 u8 idlest_reg_id; 430 u8 idlest_idle_bit; 431 u8 idlest_stdby_bit; 432}; 433 434/* 435 * Possible values for struct omap_hwmod_omap4_prcm.flags 436 * 437 * HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT: Some IP blocks don't have a PRCM 438 * module-level context loss register associated with them; this 439 * flag bit should be set in those cases 440 */ 441#define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0) 442 443/** 444 * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data 445 * @clkctrl_offs: offset of the PRCM clock control register 446 * @rstctrl_offs: offset of the XXX_RSTCTRL register located in the PRM 447 * @context_offs: offset of the RM_*_CONTEXT register 448 * @lostcontext_mask: bitmask for selecting bits from RM_*_CONTEXT register 449 * @rstst_reg: (AM33XX only) address of the XXX_RSTST register in the PRM 450 * @submodule_wkdep_bit: bit shift of the WKDEP range 451 * @flags: PRCM register capabilities for this IP block 452 * @modulemode: allowable modulemodes 453 * @context_lost_counter: Count of module level context lost 454 * 455 * If @lostcontext_mask is not defined, context loss check code uses 456 * whole register without masking. @lostcontext_mask should only be 457 * defined in cases where @context_offs register is shared by two or 458 * more hwmods. 459 */ 460struct omap_hwmod_omap4_prcm { 461 u16 clkctrl_offs; 462 u16 rstctrl_offs; 463 u16 rstst_offs; 464 u16 context_offs; 465 u32 lostcontext_mask; 466 u8 submodule_wkdep_bit; 467 u8 modulemode; 468 u8 flags; 469 int context_lost_counter; 470}; 471 472 473/* 474 * omap_hwmod.flags definitions 475 * 476 * HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out 477 * of idle, rather than relying on module smart-idle 478 * HWMOD_SWSUP_MSTANDBY: omap_hwmod code should manually bring module in and 479 * out of standby, rather than relying on module smart-standby 480 * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for 481 * SDRAM controller, etc. XXX probably belongs outside the main hwmod file 482 * XXX Should be HWMOD_SETUP_NO_RESET 483 * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM 484 * controller, etc. XXX probably belongs outside the main hwmod file 485 * XXX Should be HWMOD_SETUP_NO_IDLE 486 * HWMOD_NO_OCP_AUTOIDLE: disable module autoidle (OCP_SYSCONFIG.AUTOIDLE) 487 * when module is enabled, rather than the default, which is to 488 * enable autoidle 489 * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup 490 * HWMOD_NO_IDLEST: this module does not have idle status - this is the case 491 * only for few initiator modules on OMAP2 & 3. 492 * HWMOD_CONTROL_OPT_CLKS_IN_RESET: Enable all optional clocks during reset. 493 * This is needed for devices like DSS that require optional clocks enabled 494 * in order to complete the reset. Optional clocks will be disabled 495 * again after the reset. 496 * HWMOD_16BIT_REG: Module has 16bit registers 497 * HWMOD_EXT_OPT_MAIN_CLK: The only main functional clock source for 498 * this IP block comes from an off-chip source and is not always 499 * enabled. This prevents the hwmod code from being able to 500 * enable and reset the IP block early. XXX Eventually it should 501 * be possible to query the clock framework for this information. 502 * HWMOD_BLOCK_WFI: Some OMAP peripherals apparently don't work 503 * correctly if the MPU is allowed to go idle while the 504 * peripherals are active. This is apparently true for the I2C on 505 * OMAP2420, and also the EMAC on AM3517/3505. It's unlikely that 506 * this is really true -- we're probably not configuring something 507 * correctly, or this is being abused to deal with some PM latency 508 * issues -- but we're currently suffering from a shortage of 509 * folks who are able to track these issues down properly. 510 * HWMOD_FORCE_MSTANDBY: Always keep MIDLEMODE bits cleared so that device 511 * is kept in force-standby mode. Failing to do so causes PM problems 512 * with musb on OMAP3630 at least. Note that musb has a dedicated register 513 * to control MSTANDBY signal when MIDLEMODE is set to force-standby. 514 * HWMOD_SWSUP_SIDLE_ACT: omap_hwmod code should manually bring the module 515 * out of idle, but rely on smart-idle to the put it back in idle, 516 * so the wakeups are still functional (Only known case for now is UART) 517 * HWMOD_RECONFIG_IO_CHAIN: omap_hwmod code needs to reconfigure wake-up 518 * events by calling _reconfigure_io_chain() when a device is enabled 519 * or idled. 520 * HWMOD_OPT_CLKS_NEEDED: The optional clocks are needed for the module to 521 * operate and they need to be handled at the same time as the main_clk. 522 * HWMOD_NO_IDLE: Do not idle the hwmod at all. Useful to handle certain 523 * IPs like CPSW on DRA7, where clocks to this module cannot be disabled. 524 */ 525#define HWMOD_SWSUP_SIDLE (1 << 0) 526#define HWMOD_SWSUP_MSTANDBY (1 << 1) 527#define HWMOD_INIT_NO_RESET (1 << 2) 528#define HWMOD_INIT_NO_IDLE (1 << 3) 529#define HWMOD_NO_OCP_AUTOIDLE (1 << 4) 530#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 5) 531#define HWMOD_NO_IDLEST (1 << 6) 532#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7) 533#define HWMOD_16BIT_REG (1 << 8) 534#define HWMOD_EXT_OPT_MAIN_CLK (1 << 9) 535#define HWMOD_BLOCK_WFI (1 << 10) 536#define HWMOD_FORCE_MSTANDBY (1 << 11) 537#define HWMOD_SWSUP_SIDLE_ACT (1 << 12) 538#define HWMOD_RECONFIG_IO_CHAIN (1 << 13) 539#define HWMOD_OPT_CLKS_NEEDED (1 << 14) 540#define HWMOD_NO_IDLE (1 << 15) 541 542/* 543 * omap_hwmod._int_flags definitions 544 * These are for internal use only and are managed by the omap_hwmod code. 545 * 546 * _HWMOD_NO_MPU_PORT: no path exists for the MPU to write to this module 547 * _HWMOD_SYSCONFIG_LOADED: set when the OCP_SYSCONFIG value has been cached 548 * _HWMOD_SKIP_ENABLE: set if hwmod enabled during init (HWMOD_INIT_NO_IDLE) - 549 * causes the first call to _enable() to only update the pinmux 550 */ 551#define _HWMOD_NO_MPU_PORT (1 << 0) 552#define _HWMOD_SYSCONFIG_LOADED (1 << 1) 553#define _HWMOD_SKIP_ENABLE (1 << 2) 554 555/* 556 * omap_hwmod._state definitions 557 * 558 * INITIALIZED: reset (optionally), initialized, enabled, disabled 559 * (optionally) 560 * 561 * 562 */ 563#define _HWMOD_STATE_UNKNOWN 0 564#define _HWMOD_STATE_REGISTERED 1 565#define _HWMOD_STATE_CLKS_INITED 2 566#define _HWMOD_STATE_INITIALIZED 3 567#define _HWMOD_STATE_ENABLED 4 568#define _HWMOD_STATE_IDLE 5 569#define _HWMOD_STATE_DISABLED 6 570 571/** 572 * struct omap_hwmod_class - the type of an IP block 573 * @name: name of the hwmod_class 574 * @sysc: device SYSCONFIG/SYSSTATUS register data 575 * @rev: revision of the IP class 576 * @pre_shutdown: ptr to fn to be executed immediately prior to device shutdown 577 * @reset: ptr to fn to be executed in place of the standard hwmod reset fn 578 * @enable_preprogram: ptr to fn to be executed during device enable 579 * 580 * Represent the class of a OMAP hardware "modules" (e.g. timer, 581 * smartreflex, gpio, uart...) 582 * 583 * @pre_shutdown is a function that will be run immediately before 584 * hwmod clocks are disabled, etc. It is intended for use for hwmods 585 * like the MPU watchdog, which cannot be disabled with the standard 586 * omap_hwmod_shutdown(). The function should return 0 upon success, 587 * or some negative error upon failure. Returning an error will cause 588 * omap_hwmod_shutdown() to abort the device shutdown and return an 589 * error. 590 * 591 * If @reset is defined, then the function it points to will be 592 * executed in place of the standard hwmod _reset() code in 593 * mach-omap2/omap_hwmod.c. This is needed for IP blocks which have 594 * unusual reset sequences - usually processor IP blocks like the IVA. 595 */ 596struct omap_hwmod_class { 597 const char *name; 598 struct omap_hwmod_class_sysconfig *sysc; 599 u32 rev; 600 int (*pre_shutdown)(struct omap_hwmod *oh); 601 int (*reset)(struct omap_hwmod *oh); 602 int (*enable_preprogram)(struct omap_hwmod *oh); 603}; 604 605/** 606 * struct omap_hwmod_link - internal structure linking hwmods with ocp_ifs 607 * @ocp_if: OCP interface structure record pointer 608 * @node: list_head pointing to next struct omap_hwmod_link in a list 609 */ 610struct omap_hwmod_link { 611 struct omap_hwmod_ocp_if *ocp_if; 612 struct list_head node; 613}; 614 615/** 616 * struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks) 617 * @name: name of the hwmod 618 * @class: struct omap_hwmod_class * to the class of this hwmod 619 * @od: struct omap_device currently associated with this hwmod (internal use) 620 * @mpu_irqs: ptr to an array of MPU IRQs 621 * @sdma_reqs: ptr to an array of System DMA request IDs 622 * @prcm: PRCM data pertaining to this hwmod 623 * @main_clk: main clock: OMAP clock name 624 * @_clk: pointer to the main struct clk (filled in at runtime) 625 * @opt_clks: other device clocks that drivers can request (0..*) 626 * @voltdm: pointer to voltage domain (filled in at runtime) 627 * @dev_attr: arbitrary device attributes that can be passed to the driver 628 * @_sysc_cache: internal-use hwmod flags 629 * @mpu_rt_idx: index of device address space for register target (for DT boot) 630 * @_mpu_rt_va: cached register target start address (internal use) 631 * @_mpu_port: cached MPU register target slave (internal use) 632 * @opt_clks_cnt: number of @opt_clks 633 * @master_cnt: number of @master entries 634 * @slaves_cnt: number of @slave entries 635 * @response_lat: device OCP response latency (in interface clock cycles) 636 * @_int_flags: internal-use hwmod flags 637 * @_state: internal-use hwmod state 638 * @_postsetup_state: internal-use state to leave the hwmod in after _setup() 639 * @flags: hwmod flags (documented below) 640 * @_lock: spinlock serializing operations on this hwmod 641 * @node: list node for hwmod list (internal use) 642 * @parent_hwmod: (temporary) a pointer to the hierarchical parent of this hwmod 643 * 644 * @main_clk refers to this module's "main clock," which for our 645 * purposes is defined as "the functional clock needed for register 646 * accesses to complete." Modules may not have a main clock if the 647 * interface clock also serves as a main clock. 648 * 649 * Parameter names beginning with an underscore are managed internally by 650 * the omap_hwmod code and should not be set during initialization. 651 * 652 * @masters and @slaves are now deprecated. 653 * 654 * @parent_hwmod is temporary; there should be no need for it, as this 655 * information should already be expressed in the OCP interface 656 * structures. @parent_hwmod is present as a workaround until we improve 657 * handling for hwmods with multiple parents (e.g., OMAP4+ DSS with 658 * multiple register targets across different interconnects). 659 */ 660struct omap_hwmod { 661 const char *name; 662 struct omap_hwmod_class *class; 663 struct omap_device *od; 664 struct omap_hwmod_mux_info *mux; 665 struct omap_hwmod_irq_info *mpu_irqs; 666 struct omap_hwmod_dma_info *sdma_reqs; 667 struct omap_hwmod_rst_info *rst_lines; 668 union { 669 struct omap_hwmod_omap2_prcm omap2; 670 struct omap_hwmod_omap4_prcm omap4; 671 } prcm; 672 const char *main_clk; 673 struct clk *_clk; 674 struct omap_hwmod_opt_clk *opt_clks; 675 char *clkdm_name; 676 struct clockdomain *clkdm; 677 struct list_head master_ports; /* connect to *_IA */ 678 struct list_head slave_ports; /* connect to *_TA */ 679 void *dev_attr; 680 u32 _sysc_cache; 681 void __iomem *_mpu_rt_va; 682 spinlock_t _lock; 683 struct lock_class_key hwmod_key; /* unique lock class */ 684 struct list_head node; 685 struct omap_hwmod_ocp_if *_mpu_port; 686 unsigned int (*xlate_irq)(unsigned int); 687 u16 flags; 688 u8 mpu_rt_idx; 689 u8 response_lat; 690 u8 rst_lines_cnt; 691 u8 opt_clks_cnt; 692 u8 masters_cnt; 693 u8 slaves_cnt; 694 u8 hwmods_cnt; 695 u8 _int_flags; 696 u8 _state; 697 u8 _postsetup_state; 698 struct omap_hwmod *parent_hwmod; 699}; 700 701struct omap_hwmod *omap_hwmod_lookup(const char *name); 702int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data), 703 void *data); 704 705int __init omap_hwmod_setup_one(const char *name); 706 707int omap_hwmod_enable(struct omap_hwmod *oh); 708int omap_hwmod_idle(struct omap_hwmod *oh); 709int omap_hwmod_shutdown(struct omap_hwmod *oh); 710 711int omap_hwmod_assert_hardreset(struct omap_hwmod *oh, const char *name); 712int omap_hwmod_deassert_hardreset(struct omap_hwmod *oh, const char *name); 713 714void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs); 715u32 omap_hwmod_read(struct omap_hwmod *oh, u16 reg_offs); 716int omap_hwmod_softreset(struct omap_hwmod *oh); 717 718int omap_hwmod_count_resources(struct omap_hwmod *oh, unsigned long flags); 719int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res); 720int omap_hwmod_fill_dma_resources(struct omap_hwmod *oh, struct resource *res); 721int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type, 722 const char *name, struct resource *res); 723 724struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh); 725void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh); 726 727int omap_hwmod_enable_wakeup(struct omap_hwmod *oh); 728int omap_hwmod_disable_wakeup(struct omap_hwmod *oh); 729 730int omap_hwmod_for_each_by_class(const char *classname, 731 int (*fn)(struct omap_hwmod *oh, 732 void *user), 733 void *user); 734 735int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state); 736int omap_hwmod_get_context_loss_count(struct omap_hwmod *oh); 737 738extern void __init omap_hwmod_init(void); 739 740const char *omap_hwmod_get_main_clk(struct omap_hwmod *oh); 741 742/* 743 * 744 */ 745 746extern int omap_hwmod_aess_preprogram(struct omap_hwmod *oh); 747 748/* 749 * Chip variant-specific hwmod init routines - XXX should be converted 750 * to use initcalls once the initial boot ordering is straightened out 751 */ 752extern int omap2420_hwmod_init(void); 753extern int omap2430_hwmod_init(void); 754extern int omap3xxx_hwmod_init(void); 755extern int omap44xx_hwmod_init(void); 756extern int omap54xx_hwmod_init(void); 757extern int am33xx_hwmod_init(void); 758extern int ti81xx_hwmod_init(void); 759extern int dra7xx_hwmod_init(void); 760int am43xx_hwmod_init(void); 761 762extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois); 763 764#endif 765