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#ifdef CONFIG_OMAP_GPMC_DEBUG 113#define DEBUG_OMAP_GPMC_HWMOD_FLAGS HWMOD_INIT_NO_RESET 114#else 115#define DEBUG_OMAP_GPMC_HWMOD_FLAGS 0 116#endif 117 118#if defined(CONFIG_DEBUG_OMAP2UART1) 119#undef DEBUG_OMAP2UART1_FLAGS 120#define DEBUG_OMAP2UART1_FLAGS DEBUG_OMAPUART_FLAGS 121#elif defined(CONFIG_DEBUG_OMAP2UART2) 122#undef DEBUG_OMAP2UART2_FLAGS 123#define DEBUG_OMAP2UART2_FLAGS DEBUG_OMAPUART_FLAGS 124#elif defined(CONFIG_DEBUG_OMAP2UART3) 125#undef DEBUG_OMAP2UART3_FLAGS 126#define DEBUG_OMAP2UART3_FLAGS DEBUG_OMAPUART_FLAGS 127#elif defined(CONFIG_DEBUG_OMAP3UART3) 128#undef DEBUG_OMAP3UART3_FLAGS 129#define DEBUG_OMAP3UART3_FLAGS DEBUG_OMAPUART_FLAGS 130#elif defined(CONFIG_DEBUG_OMAP3UART4) 131#undef DEBUG_OMAP3UART4_FLAGS 132#define DEBUG_OMAP3UART4_FLAGS DEBUG_OMAPUART_FLAGS 133#elif defined(CONFIG_DEBUG_OMAP4UART3) 134#undef DEBUG_OMAP4UART3_FLAGS 135#define DEBUG_OMAP4UART3_FLAGS DEBUG_OMAPUART_FLAGS 136#elif defined(CONFIG_DEBUG_OMAP4UART4) 137#undef DEBUG_OMAP4UART4_FLAGS 138#define DEBUG_OMAP4UART4_FLAGS DEBUG_OMAPUART_FLAGS 139#elif defined(CONFIG_DEBUG_TI81XXUART1) 140#undef DEBUG_TI81XXUART1_FLAGS 141#define DEBUG_TI81XXUART1_FLAGS DEBUG_OMAPUART_FLAGS 142#elif defined(CONFIG_DEBUG_TI81XXUART2) 143#undef DEBUG_TI81XXUART2_FLAGS 144#define DEBUG_TI81XXUART2_FLAGS DEBUG_OMAPUART_FLAGS 145#elif defined(CONFIG_DEBUG_TI81XXUART3) 146#undef DEBUG_TI81XXUART3_FLAGS 147#define DEBUG_TI81XXUART3_FLAGS DEBUG_OMAPUART_FLAGS 148#elif defined(CONFIG_DEBUG_AM33XXUART1) 149#undef DEBUG_AM33XXUART1_FLAGS 150#define DEBUG_AM33XXUART1_FLAGS DEBUG_OMAPUART_FLAGS 151#endif 152 153/** 154 * struct omap_hwmod_mux_info - hwmod specific mux configuration 155 * @pads: array of omap_device_pad entries 156 * @nr_pads: number of omap_device_pad entries 157 * 158 * Note that this is currently built during init as needed. 159 */ 160struct omap_hwmod_mux_info { 161 int nr_pads; 162 struct omap_device_pad *pads; 163 int nr_pads_dynamic; 164 struct omap_device_pad **pads_dynamic; 165 int *irqs; 166 bool enabled; 167}; 168 169/** 170 * struct omap_hwmod_irq_info - MPU IRQs used by the hwmod 171 * @name: name of the IRQ channel (module local name) 172 * @irq: IRQ channel ID (should be non-negative except -1 = terminator) 173 * 174 * @name should be something short, e.g., "tx" or "rx". It is for use 175 * by platform_get_resource_byname(). It is defined locally to the 176 * hwmod. 177 */ 178struct omap_hwmod_irq_info { 179 const char *name; 180 s16 irq; 181}; 182 183/** 184 * struct omap_hwmod_dma_info - DMA channels used by the hwmod 185 * @name: name of the DMA channel (module local name) 186 * @dma_req: DMA request ID (should be non-negative except -1 = terminator) 187 * 188 * @name should be something short, e.g., "tx" or "rx". It is for use 189 * by platform_get_resource_byname(). It is defined locally to the 190 * hwmod. 191 */ 192struct omap_hwmod_dma_info { 193 const char *name; 194 s16 dma_req; 195}; 196 197/** 198 * struct omap_hwmod_rst_info - IPs reset lines use by hwmod 199 * @name: name of the reset line (module local name) 200 * @rst_shift: Offset of the reset bit 201 * @st_shift: Offset of the reset status bit (OMAP2/3 only) 202 * 203 * @name should be something short, e.g., "cpu0" or "rst". It is defined 204 * locally to the hwmod. 205 */ 206struct omap_hwmod_rst_info { 207 const char *name; 208 u8 rst_shift; 209 u8 st_shift; 210}; 211 212/** 213 * struct omap_hwmod_opt_clk - optional clocks used by this hwmod 214 * @role: "sys", "32k", "tv", etc -- for use in clk_get() 215 * @clk: opt clock: OMAP clock name 216 * @_clk: pointer to the struct clk (filled in at runtime) 217 * 218 * The module's interface clock and main functional clock should not 219 * be added as optional clocks. 220 */ 221struct omap_hwmod_opt_clk { 222 const char *role; 223 const char *clk; 224 struct clk *_clk; 225}; 226 227 228/* omap_hwmod_omap2_firewall.flags bits */ 229#define OMAP_FIREWALL_L3 (1 << 0) 230#define OMAP_FIREWALL_L4 (1 << 1) 231 232/** 233 * struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data 234 * @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_* 235 * @l4_fw_region: L4 firewall region ID 236 * @l4_prot_group: L4 protection group ID 237 * @flags: (see omap_hwmod_omap2_firewall.flags macros above) 238 */ 239struct omap_hwmod_omap2_firewall { 240 u8 l3_perm_bit; 241 u8 l4_fw_region; 242 u8 l4_prot_group; 243 u8 flags; 244}; 245 246 247/* 248 * omap_hwmod_addr_space.flags bits 249 * 250 * ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init. 251 * ADDR_TYPE_RT: Address space contains module register target data. 252 */ 253#define ADDR_MAP_ON_INIT (1 << 0) /* XXX does not belong */ 254#define ADDR_TYPE_RT (1 << 1) 255 256/** 257 * struct omap_hwmod_addr_space - address space handled by the hwmod 258 * @name: name of the address space 259 * @pa_start: starting physical address 260 * @pa_end: ending physical address 261 * @flags: (see omap_hwmod_addr_space.flags macros above) 262 * 263 * Address space doesn't necessarily follow physical interconnect 264 * structure. GPMC is one example. 265 */ 266struct omap_hwmod_addr_space { 267 const char *name; 268 u32 pa_start; 269 u32 pa_end; 270 u8 flags; 271}; 272 273 274/* 275 * omap_hwmod_ocp_if.user bits: these indicate the initiators that use this 276 * interface to interact with the hwmod. Used to add sleep dependencies 277 * when the module is enabled or disabled. 278 */ 279#define OCP_USER_MPU (1 << 0) 280#define OCP_USER_SDMA (1 << 1) 281#define OCP_USER_DSP (1 << 2) 282#define OCP_USER_IVA (1 << 3) 283 284/* omap_hwmod_ocp_if.flags bits */ 285#define OCPIF_SWSUP_IDLE (1 << 0) 286#define OCPIF_CAN_BURST (1 << 1) 287 288/* omap_hwmod_ocp_if._int_flags possibilities */ 289#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0) 290 291 292/** 293 * struct omap_hwmod_ocp_if - OCP interface data 294 * @master: struct omap_hwmod that initiates OCP transactions on this link 295 * @slave: struct omap_hwmod that responds to OCP transactions on this link 296 * @addr: address space associated with this link 297 * @clk: interface clock: OMAP clock name 298 * @_clk: pointer to the interface struct clk (filled in at runtime) 299 * @fw: interface firewall data 300 * @width: OCP data width 301 * @user: initiators using this interface (see OCP_USER_* macros above) 302 * @flags: OCP interface flags (see OCPIF_* macros above) 303 * @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above) 304 * 305 * It may also be useful to add a tag_cnt field for OCP2.x devices. 306 * 307 * Parameter names beginning with an underscore are managed internally by 308 * the omap_hwmod code and should not be set during initialization. 309 */ 310struct omap_hwmod_ocp_if { 311 struct omap_hwmod *master; 312 struct omap_hwmod *slave; 313 struct omap_hwmod_addr_space *addr; 314 const char *clk; 315 struct clk *_clk; 316 struct list_head node; 317 union { 318 struct omap_hwmod_omap2_firewall omap2; 319 } fw; 320 u8 width; 321 u8 user; 322 u8 flags; 323 u8 _int_flags; 324}; 325 326 327/* Macros for use in struct omap_hwmod_sysconfig */ 328 329/* Flags for use in omap_hwmod_sysconfig.idlemodes */ 330#define MASTER_STANDBY_SHIFT 4 331#define SLAVE_IDLE_SHIFT 0 332#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT) 333#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT) 334#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT) 335#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT) 336#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT) 337#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT) 338#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT) 339#define MSTANDBY_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << MASTER_STANDBY_SHIFT) 340 341/* omap_hwmod_sysconfig.sysc_flags capability flags */ 342#define SYSC_HAS_AUTOIDLE (1 << 0) 343#define SYSC_HAS_SOFTRESET (1 << 1) 344#define SYSC_HAS_ENAWAKEUP (1 << 2) 345#define SYSC_HAS_EMUFREE (1 << 3) 346#define SYSC_HAS_CLOCKACTIVITY (1 << 4) 347#define SYSC_HAS_SIDLEMODE (1 << 5) 348#define SYSC_HAS_MIDLEMODE (1 << 6) 349#define SYSS_HAS_RESET_STATUS (1 << 7) 350#define SYSC_NO_CACHE (1 << 8) /* XXX SW flag, belongs elsewhere */ 351#define SYSC_HAS_RESET_STATUS (1 << 9) 352#define SYSC_HAS_DMADISABLE (1 << 10) 353 354/* omap_hwmod_sysconfig.clockact flags */ 355#define CLOCKACT_TEST_BOTH 0x0 356#define CLOCKACT_TEST_MAIN 0x1 357#define CLOCKACT_TEST_ICLK 0x2 358#define CLOCKACT_TEST_NONE 0x3 359 360/** 361 * struct omap_hwmod_sysc_fields - hwmod OCP_SYSCONFIG register field offsets. 362 * @midle_shift: Offset of the midle bit 363 * @clkact_shift: Offset of the clockactivity bit 364 * @sidle_shift: Offset of the sidle bit 365 * @enwkup_shift: Offset of the enawakeup bit 366 * @srst_shift: Offset of the softreset bit 367 * @autoidle_shift: Offset of the autoidle bit 368 * @dmadisable_shift: Offset of the dmadisable bit 369 */ 370struct omap_hwmod_sysc_fields { 371 u8 midle_shift; 372 u8 clkact_shift; 373 u8 sidle_shift; 374 u8 enwkup_shift; 375 u8 srst_shift; 376 u8 autoidle_shift; 377 u8 dmadisable_shift; 378}; 379 380/** 381 * struct omap_hwmod_class_sysconfig - hwmod class OCP_SYS* data 382 * @rev_offs: IP block revision register offset (from module base addr) 383 * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr) 384 * @syss_offs: OCP_SYSSTATUS register offset (from module base addr) 385 * @srst_udelay: Delay needed after doing a softreset in usecs 386 * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART} 387 * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported 388 * @clockact: the default value of the module CLOCKACTIVITY bits 389 * 390 * @clockact describes to the module which clocks are likely to be 391 * disabled when the PRCM issues its idle request to the module. Some 392 * modules have separate clockdomains for the interface clock and main 393 * functional clock, and can check whether they should acknowledge the 394 * idle request based on the internal module functionality that has 395 * been associated with the clocks marked in @clockact. This field is 396 * only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below) 397 * 398 * @sysc_fields: structure containing the offset positions of various bits in 399 * SYSCONFIG register. This can be populated using omap_hwmod_sysc_type1 or 400 * omap_hwmod_sysc_type2 defined in omap_hwmod_common_data.c depending on 401 * whether the device ip is compliant with the original PRCM protocol 402 * defined for OMAP2420 or the new PRCM protocol for new OMAP4 IPs. 403 * If the device follows a different scheme for the sysconfig register , 404 * then this field has to be populated with the correct offset structure. 405 */ 406struct omap_hwmod_class_sysconfig { 407 u32 rev_offs; 408 u32 sysc_offs; 409 u32 syss_offs; 410 u16 sysc_flags; 411 struct omap_hwmod_sysc_fields *sysc_fields; 412 u8 srst_udelay; 413 u8 idlemodes; 414}; 415 416/** 417 * struct omap_hwmod_omap2_prcm - OMAP2/3-specific PRCM data 418 * @module_offs: PRCM submodule offset from the start of the PRM/CM 419 * @prcm_reg_id: PRCM register ID (e.g., 3 for CM_AUTOIDLE3) 420 * @module_bit: register bit shift for AUTOIDLE, WKST, WKEN, GRPSEL regs 421 * @idlest_reg_id: IDLEST register ID (e.g., 3 for CM_IDLEST3) 422 * @idlest_idle_bit: register bit shift for CM_IDLEST slave idle bit 423 * @idlest_stdby_bit: register bit shift for CM_IDLEST master standby bit 424 * 425 * @prcm_reg_id and @module_bit are specific to the AUTOIDLE, WKST, 426 * WKEN, GRPSEL registers. In an ideal world, no extra information 427 * would be needed for IDLEST information, but alas, there are some 428 * exceptions, so @idlest_reg_id, @idlest_idle_bit, @idlest_stdby_bit 429 * are needed for the IDLEST registers (c.f. 2430 I2CHS, 3430 USBHOST) 430 */ 431struct omap_hwmod_omap2_prcm { 432 s16 module_offs; 433 u8 prcm_reg_id; 434 u8 module_bit; 435 u8 idlest_reg_id; 436 u8 idlest_idle_bit; 437 u8 idlest_stdby_bit; 438}; 439 440/* 441 * Possible values for struct omap_hwmod_omap4_prcm.flags 442 * 443 * HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT: Some IP blocks don't have a PRCM 444 * module-level context loss register associated with them; this 445 * flag bit should be set in those cases 446 * HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET: Some IP blocks have a valid CLKCTRL 447 * offset of zero; this flag bit should be set in those cases to 448 * distinguish from hwmods that have no clkctrl offset. 449 */ 450#define HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT (1 << 0) 451#define HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET (1 << 1) 452 453/** 454 * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data 455 * @clkctrl_offs: offset of the PRCM clock control register 456 * @rstctrl_offs: offset of the XXX_RSTCTRL register located in the PRM 457 * @context_offs: offset of the RM_*_CONTEXT register 458 * @lostcontext_mask: bitmask for selecting bits from RM_*_CONTEXT register 459 * @rstst_reg: (AM33XX only) address of the XXX_RSTST register in the PRM 460 * @submodule_wkdep_bit: bit shift of the WKDEP range 461 * @flags: PRCM register capabilities for this IP block 462 * @modulemode: allowable modulemodes 463 * @context_lost_counter: Count of module level context lost 464 * 465 * If @lostcontext_mask is not defined, context loss check code uses 466 * whole register without masking. @lostcontext_mask should only be 467 * defined in cases where @context_offs register is shared by two or 468 * more hwmods. 469 */ 470struct omap_hwmod_omap4_prcm { 471 u16 clkctrl_offs; 472 u16 rstctrl_offs; 473 u16 rstst_offs; 474 u16 context_offs; 475 u32 lostcontext_mask; 476 u8 submodule_wkdep_bit; 477 u8 modulemode; 478 u8 flags; 479 int context_lost_counter; 480}; 481 482 483/* 484 * omap_hwmod.flags definitions 485 * 486 * HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out 487 * of idle, rather than relying on module smart-idle 488 * HWMOD_SWSUP_MSTANDBY: omap_hwmod code should manually bring module in and 489 * out of standby, rather than relying on module smart-standby 490 * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for 491 * SDRAM controller, etc. XXX probably belongs outside the main hwmod file 492 * XXX Should be HWMOD_SETUP_NO_RESET 493 * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM 494 * controller, etc. XXX probably belongs outside the main hwmod file 495 * XXX Should be HWMOD_SETUP_NO_IDLE 496 * HWMOD_NO_OCP_AUTOIDLE: disable module autoidle (OCP_SYSCONFIG.AUTOIDLE) 497 * when module is enabled, rather than the default, which is to 498 * enable autoidle 499 * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup 500 * HWMOD_NO_IDLEST: this module does not have idle status - this is the case 501 * only for few initiator modules on OMAP2 & 3. 502 * HWMOD_CONTROL_OPT_CLKS_IN_RESET: Enable all optional clocks during reset. 503 * This is needed for devices like DSS that require optional clocks enabled 504 * in order to complete the reset. Optional clocks will be disabled 505 * again after the reset. 506 * HWMOD_16BIT_REG: Module has 16bit registers 507 * HWMOD_EXT_OPT_MAIN_CLK: The only main functional clock source for 508 * this IP block comes from an off-chip source and is not always 509 * enabled. This prevents the hwmod code from being able to 510 * enable and reset the IP block early. XXX Eventually it should 511 * be possible to query the clock framework for this information. 512 * HWMOD_BLOCK_WFI: Some OMAP peripherals apparently don't work 513 * correctly if the MPU is allowed to go idle while the 514 * peripherals are active. This is apparently true for the I2C on 515 * OMAP2420, and also the EMAC on AM3517/3505. It's unlikely that 516 * this is really true -- we're probably not configuring something 517 * correctly, or this is being abused to deal with some PM latency 518 * issues -- but we're currently suffering from a shortage of 519 * folks who are able to track these issues down properly. 520 * HWMOD_FORCE_MSTANDBY: Always keep MIDLEMODE bits cleared so that device 521 * is kept in force-standby mode. Failing to do so causes PM problems 522 * with musb on OMAP3630 at least. Note that musb has a dedicated register 523 * to control MSTANDBY signal when MIDLEMODE is set to force-standby. 524 * HWMOD_SWSUP_SIDLE_ACT: omap_hwmod code should manually bring the module 525 * out of idle, but rely on smart-idle to the put it back in idle, 526 * so the wakeups are still functional (Only known case for now is UART) 527 * HWMOD_RECONFIG_IO_CHAIN: omap_hwmod code needs to reconfigure wake-up 528 * events by calling _reconfigure_io_chain() when a device is enabled 529 * or idled. 530 * HWMOD_OPT_CLKS_NEEDED: The optional clocks are needed for the module to 531 * operate and they need to be handled at the same time as the main_clk. 532 * HWMOD_NO_IDLE: Do not idle the hwmod at all. Useful to handle certain 533 * IPs like CPSW on DRA7, where clocks to this module cannot be disabled. 534 * HWMOD_CLKDM_NOAUTO: Allows the hwmod's clockdomain to be prevented from 535 * entering HW_AUTO while hwmod is active. This is needed to workaround 536 * some modules which don't function correctly with HW_AUTO. For example, 537 * DCAN on DRA7x SoC needs this to workaround errata i893. 538 */ 539#define HWMOD_SWSUP_SIDLE (1 << 0) 540#define HWMOD_SWSUP_MSTANDBY (1 << 1) 541#define HWMOD_INIT_NO_RESET (1 << 2) 542#define HWMOD_INIT_NO_IDLE (1 << 3) 543#define HWMOD_NO_OCP_AUTOIDLE (1 << 4) 544#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 5) 545#define HWMOD_NO_IDLEST (1 << 6) 546#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7) 547#define HWMOD_16BIT_REG (1 << 8) 548#define HWMOD_EXT_OPT_MAIN_CLK (1 << 9) 549#define HWMOD_BLOCK_WFI (1 << 10) 550#define HWMOD_FORCE_MSTANDBY (1 << 11) 551#define HWMOD_SWSUP_SIDLE_ACT (1 << 12) 552#define HWMOD_RECONFIG_IO_CHAIN (1 << 13) 553#define HWMOD_OPT_CLKS_NEEDED (1 << 14) 554#define HWMOD_NO_IDLE (1 << 15) 555#define HWMOD_CLKDM_NOAUTO (1 << 16) 556 557/* 558 * omap_hwmod._int_flags definitions 559 * These are for internal use only and are managed by the omap_hwmod code. 560 * 561 * _HWMOD_NO_MPU_PORT: no path exists for the MPU to write to this module 562 * _HWMOD_SYSCONFIG_LOADED: set when the OCP_SYSCONFIG value has been cached 563 * _HWMOD_SKIP_ENABLE: set if hwmod enabled during init (HWMOD_INIT_NO_IDLE) - 564 * causes the first call to _enable() to only update the pinmux 565 */ 566#define _HWMOD_NO_MPU_PORT (1 << 0) 567#define _HWMOD_SYSCONFIG_LOADED (1 << 1) 568#define _HWMOD_SKIP_ENABLE (1 << 2) 569 570/* 571 * omap_hwmod._state definitions 572 * 573 * INITIALIZED: reset (optionally), initialized, enabled, disabled 574 * (optionally) 575 * 576 * 577 */ 578#define _HWMOD_STATE_UNKNOWN 0 579#define _HWMOD_STATE_REGISTERED 1 580#define _HWMOD_STATE_CLKS_INITED 2 581#define _HWMOD_STATE_INITIALIZED 3 582#define _HWMOD_STATE_ENABLED 4 583#define _HWMOD_STATE_IDLE 5 584#define _HWMOD_STATE_DISABLED 6 585 586/** 587 * struct omap_hwmod_class - the type of an IP block 588 * @name: name of the hwmod_class 589 * @sysc: device SYSCONFIG/SYSSTATUS register data 590 * @rev: revision of the IP class 591 * @pre_shutdown: ptr to fn to be executed immediately prior to device shutdown 592 * @reset: ptr to fn to be executed in place of the standard hwmod reset fn 593 * @enable_preprogram: ptr to fn to be executed during device enable 594 * @lock: ptr to fn to be executed to lock IP registers 595 * @unlock: ptr to fn to be executed to unlock IP registers 596 * 597 * Represent the class of a OMAP hardware "modules" (e.g. timer, 598 * smartreflex, gpio, uart...) 599 * 600 * @pre_shutdown is a function that will be run immediately before 601 * hwmod clocks are disabled, etc. It is intended for use for hwmods 602 * like the MPU watchdog, which cannot be disabled with the standard 603 * omap_hwmod_shutdown(). The function should return 0 upon success, 604 * or some negative error upon failure. Returning an error will cause 605 * omap_hwmod_shutdown() to abort the device shutdown and return an 606 * error. 607 * 608 * If @reset is defined, then the function it points to will be 609 * executed in place of the standard hwmod _reset() code in 610 * mach-omap2/omap_hwmod.c. This is needed for IP blocks which have 611 * unusual reset sequences - usually processor IP blocks like the IVA. 612 */ 613struct omap_hwmod_class { 614 const char *name; 615 struct omap_hwmod_class_sysconfig *sysc; 616 u32 rev; 617 int (*pre_shutdown)(struct omap_hwmod *oh); 618 int (*reset)(struct omap_hwmod *oh); 619 int (*enable_preprogram)(struct omap_hwmod *oh); 620 void (*lock)(struct omap_hwmod *oh); 621 void (*unlock)(struct omap_hwmod *oh); 622}; 623 624/** 625 * struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks) 626 * @name: name of the hwmod 627 * @class: struct omap_hwmod_class * to the class of this hwmod 628 * @od: struct omap_device currently associated with this hwmod (internal use) 629 * @mpu_irqs: ptr to an array of MPU IRQs 630 * @sdma_reqs: ptr to an array of System DMA request IDs 631 * @prcm: PRCM data pertaining to this hwmod 632 * @main_clk: main clock: OMAP clock name 633 * @_clk: pointer to the main struct clk (filled in at runtime) 634 * @opt_clks: other device clocks that drivers can request (0..*) 635 * @voltdm: pointer to voltage domain (filled in at runtime) 636 * @dev_attr: arbitrary device attributes that can be passed to the driver 637 * @_sysc_cache: internal-use hwmod flags 638 * @mpu_rt_idx: index of device address space for register target (for DT boot) 639 * @_mpu_rt_va: cached register target start address (internal use) 640 * @_mpu_port: cached MPU register target slave (internal use) 641 * @opt_clks_cnt: number of @opt_clks 642 * @master_cnt: number of @master entries 643 * @slaves_cnt: number of @slave entries 644 * @response_lat: device OCP response latency (in interface clock cycles) 645 * @_int_flags: internal-use hwmod flags 646 * @_state: internal-use hwmod state 647 * @_postsetup_state: internal-use state to leave the hwmod in after _setup() 648 * @flags: hwmod flags (documented below) 649 * @_lock: spinlock serializing operations on this hwmod 650 * @node: list node for hwmod list (internal use) 651 * @parent_hwmod: (temporary) a pointer to the hierarchical parent of this hwmod 652 * 653 * @main_clk refers to this module's "main clock," which for our 654 * purposes is defined as "the functional clock needed for register 655 * accesses to complete." Modules may not have a main clock if the 656 * interface clock also serves as a main clock. 657 * 658 * Parameter names beginning with an underscore are managed internally by 659 * the omap_hwmod code and should not be set during initialization. 660 * 661 * @masters and @slaves are now deprecated. 662 * 663 * @parent_hwmod is temporary; there should be no need for it, as this 664 * information should already be expressed in the OCP interface 665 * structures. @parent_hwmod is present as a workaround until we improve 666 * handling for hwmods with multiple parents (e.g., OMAP4+ DSS with 667 * multiple register targets across different interconnects). 668 */ 669struct omap_hwmod { 670 const char *name; 671 struct omap_hwmod_class *class; 672 struct omap_device *od; 673 struct omap_hwmod_mux_info *mux; 674 struct omap_hwmod_irq_info *mpu_irqs; 675 struct omap_hwmod_dma_info *sdma_reqs; 676 struct omap_hwmod_rst_info *rst_lines; 677 union { 678 struct omap_hwmod_omap2_prcm omap2; 679 struct omap_hwmod_omap4_prcm omap4; 680 } prcm; 681 const char *main_clk; 682 struct clk *_clk; 683 struct omap_hwmod_opt_clk *opt_clks; 684 const char *clkdm_name; 685 struct clockdomain *clkdm; 686 struct list_head slave_ports; /* connect to *_TA */ 687 void *dev_attr; 688 u32 _sysc_cache; 689 void __iomem *_mpu_rt_va; 690 spinlock_t _lock; 691 struct lock_class_key hwmod_key; /* unique lock class */ 692 struct list_head node; 693 struct omap_hwmod_ocp_if *_mpu_port; 694 unsigned int (*xlate_irq)(unsigned int); 695 u32 flags; 696 u8 mpu_rt_idx; 697 u8 response_lat; 698 u8 rst_lines_cnt; 699 u8 opt_clks_cnt; 700 u8 slaves_cnt; 701 u8 hwmods_cnt; 702 u8 _int_flags; 703 u8 _state; 704 u8 _postsetup_state; 705 struct omap_hwmod *parent_hwmod; 706}; 707 708struct omap_hwmod *omap_hwmod_lookup(const char *name); 709int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data), 710 void *data); 711 712int __init omap_hwmod_setup_one(const char *name); 713 714int omap_hwmod_enable(struct omap_hwmod *oh); 715int omap_hwmod_idle(struct omap_hwmod *oh); 716int omap_hwmod_shutdown(struct omap_hwmod *oh); 717 718int omap_hwmod_assert_hardreset(struct omap_hwmod *oh, const char *name); 719int omap_hwmod_deassert_hardreset(struct omap_hwmod *oh, const char *name); 720 721void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs); 722u32 omap_hwmod_read(struct omap_hwmod *oh, u16 reg_offs); 723int omap_hwmod_softreset(struct omap_hwmod *oh); 724 725int omap_hwmod_count_resources(struct omap_hwmod *oh, unsigned long flags); 726int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res); 727int omap_hwmod_fill_dma_resources(struct omap_hwmod *oh, struct resource *res); 728int omap_hwmod_get_resource_byname(struct omap_hwmod *oh, unsigned int type, 729 const char *name, struct resource *res); 730 731struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh); 732void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh); 733 734int omap_hwmod_enable_wakeup(struct omap_hwmod *oh); 735int omap_hwmod_disable_wakeup(struct omap_hwmod *oh); 736 737int omap_hwmod_for_each_by_class(const char *classname, 738 int (*fn)(struct omap_hwmod *oh, 739 void *user), 740 void *user); 741 742int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state); 743int omap_hwmod_get_context_loss_count(struct omap_hwmod *oh); 744 745extern void __init omap_hwmod_init(void); 746 747const char *omap_hwmod_get_main_clk(struct omap_hwmod *oh); 748 749/* 750 * 751 */ 752 753extern int omap_hwmod_aess_preprogram(struct omap_hwmod *oh); 754void omap_hwmod_rtc_unlock(struct omap_hwmod *oh); 755void omap_hwmod_rtc_lock(struct omap_hwmod *oh); 756 757/* 758 * Chip variant-specific hwmod init routines - XXX should be converted 759 * to use initcalls once the initial boot ordering is straightened out 760 */ 761extern int omap2420_hwmod_init(void); 762extern int omap2430_hwmod_init(void); 763extern int omap3xxx_hwmod_init(void); 764extern int omap44xx_hwmod_init(void); 765extern int omap54xx_hwmod_init(void); 766extern int am33xx_hwmod_init(void); 767extern int dm814x_hwmod_init(void); 768extern int dm816x_hwmod_init(void); 769extern int dra7xx_hwmod_init(void); 770int am43xx_hwmod_init(void); 771 772extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois); 773 774#endif 775