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c12ba8ce23
Some module needs more than one functional clock in order to be accessible, like the McASPs found in DRA7xx family. This flag will indicate that the opt_clks need to be handled at the same time as the main_clk for the given hwmod, ensuring that all needed clocks are enabled before we try to access the module's address space. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
773 lines
28 KiB
C
773 lines
28 KiB
C
/*
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* omap_hwmod macros, structures
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*
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* Copyright (C) 2009-2011 Nokia Corporation
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* Copyright (C) 2011-2012 Texas Instruments, Inc.
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* Paul Walmsley
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*
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* Created in collaboration with (alphabetical order): Benoît Cousson,
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* Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari
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* Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* These headers and macros are used to define OMAP on-chip module
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* data and their integration with other OMAP modules and Linux.
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* Copious documentation and references can also be found in the
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* omap_hwmod code, in arch/arm/mach-omap2/omap_hwmod.c (as of this
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* writing).
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*
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* To do:
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* - add interconnect error log structures
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* - add pinmuxing
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* - init_conn_id_bit (CONNID_BIT_VECTOR)
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* - implement default hwmod SMS/SDRC flags?
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* - move Linux-specific data ("non-ROM data") out
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*
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*/
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#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
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#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/ioport.h>
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#include <linux/spinlock.h>
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struct omap_device;
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extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type1;
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extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
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extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type3;
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/*
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* OCP SYSCONFIG bit shifts/masks TYPE1. These are for IPs compliant
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* with the original PRCM protocol defined for OMAP2420
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*/
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#define SYSC_TYPE1_MIDLEMODE_SHIFT 12
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#define SYSC_TYPE1_MIDLEMODE_MASK (0x3 << SYSC_TYPE1_MIDLEMODE_SHIFT)
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#define SYSC_TYPE1_CLOCKACTIVITY_SHIFT 8
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#define SYSC_TYPE1_CLOCKACTIVITY_MASK (0x3 << SYSC_TYPE1_CLOCKACTIVITY_SHIFT)
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#define SYSC_TYPE1_SIDLEMODE_SHIFT 3
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#define SYSC_TYPE1_SIDLEMODE_MASK (0x3 << SYSC_TYPE1_SIDLEMODE_SHIFT)
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#define SYSC_TYPE1_ENAWAKEUP_SHIFT 2
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#define SYSC_TYPE1_ENAWAKEUP_MASK (1 << SYSC_TYPE1_ENAWAKEUP_SHIFT)
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#define SYSC_TYPE1_SOFTRESET_SHIFT 1
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#define SYSC_TYPE1_SOFTRESET_MASK (1 << SYSC_TYPE1_SOFTRESET_SHIFT)
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#define SYSC_TYPE1_AUTOIDLE_SHIFT 0
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#define SYSC_TYPE1_AUTOIDLE_MASK (1 << SYSC_TYPE1_AUTOIDLE_SHIFT)
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/*
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* OCP SYSCONFIG bit shifts/masks TYPE2. These are for IPs compliant
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* with the new PRCM protocol defined for new OMAP4 IPs.
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*/
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#define SYSC_TYPE2_SOFTRESET_SHIFT 0
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#define SYSC_TYPE2_SOFTRESET_MASK (1 << SYSC_TYPE2_SOFTRESET_SHIFT)
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#define SYSC_TYPE2_SIDLEMODE_SHIFT 2
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#define SYSC_TYPE2_SIDLEMODE_MASK (0x3 << SYSC_TYPE2_SIDLEMODE_SHIFT)
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#define SYSC_TYPE2_MIDLEMODE_SHIFT 4
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#define SYSC_TYPE2_MIDLEMODE_MASK (0x3 << SYSC_TYPE2_MIDLEMODE_SHIFT)
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#define SYSC_TYPE2_DMADISABLE_SHIFT 16
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#define SYSC_TYPE2_DMADISABLE_MASK (0x1 << SYSC_TYPE2_DMADISABLE_SHIFT)
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/*
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* OCP SYSCONFIG bit shifts/masks TYPE3.
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* This is applicable for some IPs present in AM33XX
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*/
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#define SYSC_TYPE3_SIDLEMODE_SHIFT 0
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#define SYSC_TYPE3_SIDLEMODE_MASK (0x3 << SYSC_TYPE3_SIDLEMODE_SHIFT)
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#define SYSC_TYPE3_MIDLEMODE_SHIFT 2
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#define SYSC_TYPE3_MIDLEMODE_MASK (0x3 << SYSC_TYPE3_MIDLEMODE_SHIFT)
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/* OCP SYSSTATUS bit shifts/masks */
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#define SYSS_RESETDONE_SHIFT 0
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#define SYSS_RESETDONE_MASK (1 << SYSS_RESETDONE_SHIFT)
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/* Master standby/slave idle mode flags */
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#define HWMOD_IDLEMODE_FORCE (1 << 0)
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#define HWMOD_IDLEMODE_NO (1 << 1)
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#define HWMOD_IDLEMODE_SMART (1 << 2)
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#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3)
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/* modulemode control type (SW or HW) */
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#define MODULEMODE_HWCTRL 1
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#define MODULEMODE_SWCTRL 2
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#define DEBUG_OMAP2UART1_FLAGS 0
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#define DEBUG_OMAP2UART2_FLAGS 0
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#define DEBUG_OMAP2UART3_FLAGS 0
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#define DEBUG_OMAP3UART3_FLAGS 0
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#define DEBUG_OMAP3UART4_FLAGS 0
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#define DEBUG_OMAP4UART3_FLAGS 0
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#define DEBUG_OMAP4UART4_FLAGS 0
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#define DEBUG_TI81XXUART1_FLAGS 0
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#define DEBUG_TI81XXUART2_FLAGS 0
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#define DEBUG_TI81XXUART3_FLAGS 0
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#define DEBUG_AM33XXUART1_FLAGS 0
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#define DEBUG_OMAPUART_FLAGS (HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET)
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#ifdef CONFIG_OMAP_GPMC_DEBUG
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#define DEBUG_OMAP_GPMC_HWMOD_FLAGS HWMOD_INIT_NO_RESET
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#else
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#define DEBUG_OMAP_GPMC_HWMOD_FLAGS 0
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#endif
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#if defined(CONFIG_DEBUG_OMAP2UART1)
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#undef DEBUG_OMAP2UART1_FLAGS
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#define DEBUG_OMAP2UART1_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_OMAP2UART2)
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#undef DEBUG_OMAP2UART2_FLAGS
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#define DEBUG_OMAP2UART2_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_OMAP2UART3)
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#undef DEBUG_OMAP2UART3_FLAGS
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#define DEBUG_OMAP2UART3_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_OMAP3UART3)
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#undef DEBUG_OMAP3UART3_FLAGS
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#define DEBUG_OMAP3UART3_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_OMAP3UART4)
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#undef DEBUG_OMAP3UART4_FLAGS
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#define DEBUG_OMAP3UART4_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_OMAP4UART3)
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#undef DEBUG_OMAP4UART3_FLAGS
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#define DEBUG_OMAP4UART3_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_OMAP4UART4)
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#undef DEBUG_OMAP4UART4_FLAGS
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#define DEBUG_OMAP4UART4_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_TI81XXUART1)
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#undef DEBUG_TI81XXUART1_FLAGS
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#define DEBUG_TI81XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_TI81XXUART2)
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#undef DEBUG_TI81XXUART2_FLAGS
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#define DEBUG_TI81XXUART2_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_TI81XXUART3)
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#undef DEBUG_TI81XXUART3_FLAGS
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#define DEBUG_TI81XXUART3_FLAGS DEBUG_OMAPUART_FLAGS
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#elif defined(CONFIG_DEBUG_AM33XXUART1)
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#undef DEBUG_AM33XXUART1_FLAGS
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#define DEBUG_AM33XXUART1_FLAGS DEBUG_OMAPUART_FLAGS
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#endif
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/**
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* struct omap_hwmod_mux_info - hwmod specific mux configuration
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* @pads: array of omap_device_pad entries
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* @nr_pads: number of omap_device_pad entries
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*
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* Note that this is currently built during init as needed.
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*/
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struct omap_hwmod_mux_info {
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int nr_pads;
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struct omap_device_pad *pads;
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int nr_pads_dynamic;
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struct omap_device_pad **pads_dynamic;
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int *irqs;
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bool enabled;
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};
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/**
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* struct omap_hwmod_irq_info - MPU IRQs used by the hwmod
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* @name: name of the IRQ channel (module local name)
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* @irq: IRQ channel ID (should be non-negative except -1 = terminator)
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*
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* @name should be something short, e.g., "tx" or "rx". It is for use
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* by platform_get_resource_byname(). It is defined locally to the
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* hwmod.
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*/
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struct omap_hwmod_irq_info {
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const char *name;
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s16 irq;
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};
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/**
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* struct omap_hwmod_dma_info - DMA channels used by the hwmod
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* @name: name of the DMA channel (module local name)
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* @dma_req: DMA request ID (should be non-negative except -1 = terminator)
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*
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* @name should be something short, e.g., "tx" or "rx". It is for use
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* by platform_get_resource_byname(). It is defined locally to the
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* hwmod.
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*/
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struct omap_hwmod_dma_info {
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const char *name;
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s16 dma_req;
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};
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/**
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* struct omap_hwmod_rst_info - IPs reset lines use by hwmod
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* @name: name of the reset line (module local name)
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* @rst_shift: Offset of the reset bit
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* @st_shift: Offset of the reset status bit (OMAP2/3 only)
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*
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* @name should be something short, e.g., "cpu0" or "rst". It is defined
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* locally to the hwmod.
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*/
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struct omap_hwmod_rst_info {
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const char *name;
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u8 rst_shift;
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u8 st_shift;
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};
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/**
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* struct omap_hwmod_opt_clk - optional clocks used by this hwmod
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* @role: "sys", "32k", "tv", etc -- for use in clk_get()
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* @clk: opt clock: OMAP clock name
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* @_clk: pointer to the struct clk (filled in at runtime)
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*
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* The module's interface clock and main functional clock should not
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* be added as optional clocks.
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*/
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struct omap_hwmod_opt_clk {
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const char *role;
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const char *clk;
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struct clk *_clk;
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};
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/* omap_hwmod_omap2_firewall.flags bits */
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#define OMAP_FIREWALL_L3 (1 << 0)
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#define OMAP_FIREWALL_L4 (1 << 1)
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/**
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* struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data
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* @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_*
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* @l4_fw_region: L4 firewall region ID
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* @l4_prot_group: L4 protection group ID
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* @flags: (see omap_hwmod_omap2_firewall.flags macros above)
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*/
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struct omap_hwmod_omap2_firewall {
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u8 l3_perm_bit;
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u8 l4_fw_region;
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u8 l4_prot_group;
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u8 flags;
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};
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/*
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* omap_hwmod_addr_space.flags bits
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*
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* ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init.
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* ADDR_TYPE_RT: Address space contains module register target data.
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*/
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#define ADDR_MAP_ON_INIT (1 << 0) /* XXX does not belong */
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#define ADDR_TYPE_RT (1 << 1)
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/**
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* struct omap_hwmod_addr_space - address space handled by the hwmod
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* @name: name of the address space
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* @pa_start: starting physical address
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* @pa_end: ending physical address
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* @flags: (see omap_hwmod_addr_space.flags macros above)
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*
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* Address space doesn't necessarily follow physical interconnect
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* structure. GPMC is one example.
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*/
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struct omap_hwmod_addr_space {
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const char *name;
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u32 pa_start;
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u32 pa_end;
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u8 flags;
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};
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/*
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* omap_hwmod_ocp_if.user bits: these indicate the initiators that use this
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* interface to interact with the hwmod. Used to add sleep dependencies
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* when the module is enabled or disabled.
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*/
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#define OCP_USER_MPU (1 << 0)
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#define OCP_USER_SDMA (1 << 1)
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#define OCP_USER_DSP (1 << 2)
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#define OCP_USER_IVA (1 << 3)
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/* omap_hwmod_ocp_if.flags bits */
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#define OCPIF_SWSUP_IDLE (1 << 0)
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#define OCPIF_CAN_BURST (1 << 1)
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/* omap_hwmod_ocp_if._int_flags possibilities */
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#define _OCPIF_INT_FLAGS_REGISTERED (1 << 0)
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/**
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* struct omap_hwmod_ocp_if - OCP interface data
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* @master: struct omap_hwmod that initiates OCP transactions on this link
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* @slave: struct omap_hwmod that responds to OCP transactions on this link
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* @addr: address space associated with this link
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* @clk: interface clock: OMAP clock name
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* @_clk: pointer to the interface struct clk (filled in at runtime)
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* @fw: interface firewall data
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* @width: OCP data width
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* @user: initiators using this interface (see OCP_USER_* macros above)
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* @flags: OCP interface flags (see OCPIF_* macros above)
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* @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above)
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*
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* It may also be useful to add a tag_cnt field for OCP2.x devices.
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*
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* Parameter names beginning with an underscore are managed internally by
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* the omap_hwmod code and should not be set during initialization.
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*/
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struct omap_hwmod_ocp_if {
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struct omap_hwmod *master;
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struct omap_hwmod *slave;
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struct omap_hwmod_addr_space *addr;
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const char *clk;
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struct clk *_clk;
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union {
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struct omap_hwmod_omap2_firewall omap2;
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} fw;
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u8 width;
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u8 user;
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u8 flags;
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u8 _int_flags;
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};
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/* Macros for use in struct omap_hwmod_sysconfig */
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/* Flags for use in omap_hwmod_sysconfig.idlemodes */
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#define MASTER_STANDBY_SHIFT 4
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#define SLAVE_IDLE_SHIFT 0
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#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT)
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#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT)
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#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT)
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#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT)
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#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT)
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#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT)
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#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT)
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#define MSTANDBY_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << MASTER_STANDBY_SHIFT)
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/* omap_hwmod_sysconfig.sysc_flags capability flags */
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#define SYSC_HAS_AUTOIDLE (1 << 0)
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#define SYSC_HAS_SOFTRESET (1 << 1)
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#define SYSC_HAS_ENAWAKEUP (1 << 2)
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#define SYSC_HAS_EMUFREE (1 << 3)
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#define SYSC_HAS_CLOCKACTIVITY (1 << 4)
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#define SYSC_HAS_SIDLEMODE (1 << 5)
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#define SYSC_HAS_MIDLEMODE (1 << 6)
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#define SYSS_HAS_RESET_STATUS (1 << 7)
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#define SYSC_NO_CACHE (1 << 8) /* XXX SW flag, belongs elsewhere */
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#define SYSC_HAS_RESET_STATUS (1 << 9)
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#define SYSC_HAS_DMADISABLE (1 << 10)
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/* omap_hwmod_sysconfig.clockact flags */
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#define CLOCKACT_TEST_BOTH 0x0
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#define CLOCKACT_TEST_MAIN 0x1
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#define CLOCKACT_TEST_ICLK 0x2
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#define CLOCKACT_TEST_NONE 0x3
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/**
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* struct omap_hwmod_sysc_fields - hwmod OCP_SYSCONFIG register field offsets.
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* @midle_shift: Offset of the midle bit
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* @clkact_shift: Offset of the clockactivity bit
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* @sidle_shift: Offset of the sidle bit
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* @enwkup_shift: Offset of the enawakeup bit
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* @srst_shift: Offset of the softreset bit
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* @autoidle_shift: Offset of the autoidle bit
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* @dmadisable_shift: Offset of the dmadisable bit
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*/
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struct omap_hwmod_sysc_fields {
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u8 midle_shift;
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u8 clkact_shift;
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u8 sidle_shift;
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u8 enwkup_shift;
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u8 srst_shift;
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u8 autoidle_shift;
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u8 dmadisable_shift;
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};
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/**
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* struct omap_hwmod_class_sysconfig - hwmod class OCP_SYS* data
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* @rev_offs: IP block revision register offset (from module base addr)
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* @sysc_offs: OCP_SYSCONFIG register offset (from module base addr)
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* @syss_offs: OCP_SYSSTATUS register offset (from module base addr)
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* @srst_udelay: Delay needed after doing a softreset in usecs
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* @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART}
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* @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported
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* @clockact: the default value of the module CLOCKACTIVITY bits
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*
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* @clockact describes to the module which clocks are likely to be
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* disabled when the PRCM issues its idle request to the module. Some
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* modules have separate clockdomains for the interface clock and main
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* functional clock, and can check whether they should acknowledge the
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* idle request based on the internal module functionality that has
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* been associated with the clocks marked in @clockact. This field is
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* only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below)
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*
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* @sysc_fields: structure containing the offset positions of various bits in
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* SYSCONFIG register. This can be populated using omap_hwmod_sysc_type1 or
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* omap_hwmod_sysc_type2 defined in omap_hwmod_common_data.c depending on
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* whether the device ip is compliant with the original PRCM protocol
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* defined for OMAP2420 or the new PRCM protocol for new OMAP4 IPs.
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* If the device follows a different scheme for the sysconfig register ,
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* then this field has to be populated with the correct offset structure.
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*/
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struct omap_hwmod_class_sysconfig {
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u32 rev_offs;
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u32 sysc_offs;
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u32 syss_offs;
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u16 sysc_flags;
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struct omap_hwmod_sysc_fields *sysc_fields;
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u8 srst_udelay;
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u8 idlemodes;
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u8 clockact;
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};
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/**
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|
* 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_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 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.
|
|
* 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.
|
|
*/
|
|
#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)
|
|
|
|
/*
|
|
* 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
|
|
|
|
/**
|
|
* 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
|
|
* @enable_preprogram: ptr to fn to be executed during device enable
|
|
* @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;
|
|
u32 rev;
|
|
int (*pre_shutdown)(struct omap_hwmod *oh);
|
|
int (*reset)(struct omap_hwmod *oh);
|
|
int (*enable_preprogram)(struct omap_hwmod *oh);
|
|
void (*lock)(struct omap_hwmod *oh);
|
|
void (*unlock)(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_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_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 lock_class_key hwmod_key; /* unique lock class */
|
|
struct list_head node;
|
|
struct omap_hwmod_ocp_if *_mpu_port;
|
|
unsigned int (*xlate_irq)(unsigned int);
|
|
u16 flags;
|
|
u8 mpu_rt_idx;
|
|
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 *parent_hwmod;
|
|
};
|
|
|
|
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);
|
|
|
|
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, unsigned long flags);
|
|
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_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);
|
|
|
|
extern void __init omap_hwmod_init(void);
|
|
|
|
const char *omap_hwmod_get_main_clk(struct omap_hwmod *oh);
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
extern int omap_hwmod_aess_preprogram(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 omap54xx_hwmod_init(void);
|
|
extern int am33xx_hwmod_init(void);
|
|
extern int dm814x_hwmod_init(void);
|
|
extern int dm816x_hwmod_init(void);
|
|
extern int dra7xx_hwmod_init(void);
|
|
int am43xx_hwmod_init(void);
|
|
|
|
extern int __init omap_hwmod_register_links(struct omap_hwmod_ocp_if **ois);
|
|
|
|
#endif
|