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The different generations of OMAP2+ SoCs have almost the same mailbox IP, but the IP has configurable parameters for number of users (interrupts it can generate out towards processors) and number of fifos (the base unidirectional h/w communication channel). This data cannot be read from any registers, and so has been added to the platform data. This data together with the interrupt-type configuration can be used in properly figuring out the number of registers to save and restore in the OMAP mailbox driver code. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Suman Anna <s-anna@ti.com>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
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* mailbox-omap.h
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*
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* Copyright (C) 2013 Texas Instruments, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _PLAT_MAILBOX_H
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#define _PLAT_MAILBOX_H
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/* Interrupt register configuration types */
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#define MBOX_INTR_CFG_TYPE1 (0)
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#define MBOX_INTR_CFG_TYPE2 (1)
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/**
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* struct omap_mbox_dev_info - OMAP mailbox device attribute info
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* @name: name of the mailbox device
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* @tx_id: mailbox queue id used for transmitting messages
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* @rx_id: mailbox queue id on which messages are received
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* @irq_id: irq identifier number to use from the hwmod data
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* @usr_id: mailbox user id for identifying the interrupt into
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* the MPU interrupt controller.
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*/
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struct omap_mbox_dev_info {
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const char *name;
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u32 tx_id;
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u32 rx_id;
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u32 irq_id;
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u32 usr_id;
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};
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/**
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* struct omap_mbox_pdata - OMAP mailbox platform data
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* @intr_type: type of interrupt configuration registers used
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while programming mailbox queue interrupts
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* @num_users: number of users (processor devices) that the mailbox
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* h/w block can interrupt
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* @num_fifos: number of h/w fifos within the mailbox h/w block
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* @info_cnt: number of mailbox devices for the platform
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* @info: array of mailbox device attributes
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*/
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struct omap_mbox_pdata {
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u32 intr_type;
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u32 num_users;
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u32 num_fifos;
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u32 info_cnt;
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struct omap_mbox_dev_info *info;
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};
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#endif /* _PLAT_MAILBOX_H */
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