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git://nv-tegra.nvidia.com/linux-nv-oot.git
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28a1cfd1c1
Redesign DCE KMD drive state machine to handle new PM events. Bug 3583331 Change-Id: I89adcfa2f311a9a1e86b70e14821468203365266 Signed-off-by: Mahesh Kumar <mahkumar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2673665 Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Arun Swain <arswain@nvidia.com> GVS: Gerrit_Virtual_Submit
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
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* Copyright (c) 2019-2022, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions 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 it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef DCE_MAILBOX_H
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#define DCE_MAILBOX_H
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struct tegra_dce;
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#define DCE_MAILBOX_BOOT_INTERFACE 0U
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#define DCE_MAILBOX_ADMIN_INTERFACE 1U
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#define DCE_MAILBOX_DISPRM_INTERFACE 2U
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#define DCE_MAILBOX_DISPRM_NOTIFY_INTERFACE 3U
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#define DCE_MAILBOX_MAX_INTERFACES 4U
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/**
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* struct dce_mailbox_interface - Contains dce mailbox interface state info
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*
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* @lock : dce_mutext for this mailbox interface.
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* @state : Stores the current status of the mailbox interface.
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* @ack_value : Stores the response received from dce f/w on an interface.
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* @s_mb : mailbox used to send commands to DCE CCPLEX for this interface.
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* @r_mb : mailbox used to receive commands from DCE for this interface.
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* @valid : true if the stored status is valid.
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*/
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struct dce_mailbox_interface {
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u8 s_mb;
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u8 r_mb;
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int state;
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bool valid;
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void *notify_data;
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struct dce_mutex lock;
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unsigned int ack_value;
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int (*dce_mailbox_wait)(struct tegra_dce *);
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void (*notify)(struct tegra_dce *, void *);
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};
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u32 dce_mailbox_get_interface_status(struct tegra_dce *d, u8 id);
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void dce_mailbox_store_interface_status(struct tegra_dce *d,
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u32 v, u8 id);
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void dce_mailbox_invalidate_status(struct tegra_dce *d, u8 id);
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void dce_mailbox_isr(struct tegra_dce *d);
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void dce_mailbox_set_full_interrupt(struct tegra_dce *d, u8 id);
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int dce_mailbox_send_cmd_sync(struct tegra_dce *d, u32 cmd, u32 interface);
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int dce_handle_mailbox_send_cmd_sync(struct tegra_dce *d, u32 cmd, u32 interface);
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int dce_mailbox_init_interface(struct tegra_dce *d, u8 id, u8 s_mb,
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u8 r_mb, int (*dce_mailbox_wait)(struct tegra_dce *),
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void *notify_data, void (*notify)(struct tegra_dce *, void *));
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void dce_mailbox_deinit_interface(struct tegra_dce *d, u8 id);
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#endif
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