2a50edbf10
[Why] HPD disable and enable sequences are not mutually exclusive on Linux. For HPDs that spans under 1s (i.e. HPD low = 1s), part of the disable sequence (specifically, a request to SMU to lower refclk) could come right before the call to PHY enablement, causing DMUB to access an irresponsive PHY and thus a hard hang on the system. [How] Disable 48mhz refclk off when there is any HPD status in connected state. Reviewed-by: Hersen Wu <hersenwu@amd.com> Acked-by: Mikita Lipski <mikita.lipski@amd.com> Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*
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* Copyright 2012-15 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef __DAL_IRQ_SERVICE_H__
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#define __DAL_IRQ_SERVICE_H__
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#include "include/irq_service_interface.h"
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#include "irq_types.h"
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struct irq_service;
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struct irq_source_info;
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struct irq_source_info_funcs {
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bool (*set)(
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struct irq_service *irq_service,
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const struct irq_source_info *info,
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bool enable);
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bool (*ack)(
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struct irq_service *irq_service,
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const struct irq_source_info *info);
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};
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struct irq_source_info {
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uint32_t src_id;
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uint32_t ext_id;
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uint32_t enable_reg;
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uint32_t enable_mask;
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uint32_t enable_value[2];
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uint32_t ack_reg;
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uint32_t ack_mask;
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uint32_t ack_value;
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uint32_t status_reg;
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const struct irq_source_info_funcs *funcs;
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};
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struct irq_service_funcs {
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enum dc_irq_source (*to_dal_irq_source)(
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struct irq_service *irq_service,
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uint32_t src_id,
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uint32_t ext_id);
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};
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struct irq_service {
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struct dc_context *ctx;
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const struct irq_source_info *info;
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const struct irq_service_funcs *funcs;
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};
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const struct irq_source_info *find_irq_source_info(
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struct irq_service *irq_service,
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enum dc_irq_source source);
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void dal_irq_service_construct(
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struct irq_service *irq_service,
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struct irq_service_init_data *init_data);
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void dal_irq_service_ack_generic(
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struct irq_service *irq_service,
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const struct irq_source_info *info);
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void dal_irq_service_set_generic(
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struct irq_service *irq_service,
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const struct irq_source_info *info,
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bool enable);
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#endif
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