diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/irq/irq_service.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/irq/irq_service.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/irq/irq_service.c b/drivers/gpu/drm/amd/display/dc/irq/irq_service.c new file mode 100644 index 000000000000..b595a11c5eaf --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/irq/irq_service.c @@ -0,0 +1,243 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: AMD + * + */ + +#include "dm_services.h" + +#include "include/irq_service_interface.h" +#include "include/logger_interface.h" + +#include "dce110/irq_service_dce110.h" + +#if defined(CONFIG_DRM_AMD_DC_SI) +#include "dce60/irq_service_dce60.h" +#endif + +#include "dce80/irq_service_dce80.h" +#include "dce120/irq_service_dce120.h" +#include "dcn10/irq_service_dcn10.h" + +#include "reg_helper.h" +#include "irq_service.h" + +//HPD0_DC_HPD_INT_STATUS +#define HPD0_DC_HPD_INT_STATUS__DC_HPD_SENSE_DELAYED_MASK 0x00000010L +#define HPD0_DC_HPD_INT_CONTROL__DC_HPD_INT_POLARITY_MASK 0x00000100L +#define HPD0_DC_HPD_INT_STATUS__DC_HPD_SENSE_DELAYED__SHIFT 0x4 +#define HPD0_DC_HPD_INT_CONTROL__DC_HPD_INT_POLARITY__SHIFT 0x8 +//HPD1_DC_HPD_INT_STATUS +#define DC_HPD1_INT_STATUS__DC_HPD1_SENSE_DELAYED_MASK 0x10 +#define DC_HPD1_INT_STATUS__DC_HPD1_SENSE_DELAYED__SHIFT 0x4 +#define DC_HPD1_INT_CONTROL__DC_HPD1_INT_POLARITY_MASK 0x100 +#define DC_HPD1_INT_CONTROL__DC_HPD1_INT_POLARITY__SHIFT 0x8 + + +#define CTX \ + irq_service->ctx +#define DC_LOGGER \ + irq_service->ctx->logger + +void dal_irq_service_construct( + struct irq_service *irq_service, + struct irq_service_init_data *init_data) +{ + if (!init_data || !init_data->ctx) { + BREAK_TO_DEBUGGER(); + return; + } + + irq_service->ctx = init_data->ctx; +} + +void dal_irq_service_destroy(struct irq_service **irq_service) +{ + if (!irq_service || !*irq_service) { + BREAK_TO_DEBUGGER(); + return; + } + + kfree(*irq_service); + + *irq_service = NULL; +} + +static const struct irq_source_info *find_irq_source_info( + struct irq_service *irq_service, + enum dc_irq_source source) +{ + if (source >= DAL_IRQ_SOURCES_NUMBER) + return NULL; + + return &irq_service->info[source]; +} + +void dal_irq_service_set_generic( + struct irq_service *irq_service, + const struct irq_source_info *info, + bool enable) +{ + uint32_t addr = info->enable_reg; + uint32_t value = dm_read_reg(irq_service->ctx, addr); + + value = (value & ~info->enable_mask) | + (info->enable_value[enable ? 0 : 1] & info->enable_mask); + dm_write_reg(irq_service->ctx, addr, value); +} + +bool dal_irq_service_set( + struct irq_service *irq_service, + enum dc_irq_source source, + bool enable) +{ + const struct irq_source_info *info = + find_irq_source_info(irq_service, source); + + if (!info) { + DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", + __func__, + source); + return false; + } + + dal_irq_service_ack(irq_service, source); + + if (info->funcs && info->funcs->set) { + if (info->funcs->set == dal_irq_service_dummy_set) { + DC_LOG_WARNING("%s: src: %d, st: %d\n", __func__, + source, enable); + ASSERT(0); + } + + return info->funcs->set(irq_service, info, enable); + } + + dal_irq_service_set_generic(irq_service, info, enable); + + return true; +} + +void dal_irq_service_ack_generic( + struct irq_service *irq_service, + const struct irq_source_info *info) +{ + uint32_t addr = info->ack_reg; + uint32_t value = dm_read_reg(irq_service->ctx, addr); + + value = (value & ~info->ack_mask) | + (info->ack_value & info->ack_mask); + dm_write_reg(irq_service->ctx, addr, value); +} + +bool dal_irq_service_ack( + struct irq_service *irq_service, + enum dc_irq_source source) +{ + const struct irq_source_info *info = + find_irq_source_info(irq_service, source); + + if (!info) { + DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", + __func__, + source); + return false; + } + + if (info->funcs && info->funcs->ack) { + if (info->funcs->ack == dal_irq_service_dummy_ack) { + DC_LOG_WARNING("%s: src: %d\n", __func__, source); + ASSERT(0); + } + + return info->funcs->ack(irq_service, info); + } + + dal_irq_service_ack_generic(irq_service, info); + + return true; +} + +enum dc_irq_source dal_irq_service_to_irq_source( + struct irq_service *irq_service, + uint32_t src_id, + uint32_t ext_id) +{ + return irq_service->funcs->to_dal_irq_source( + irq_service, + src_id, + ext_id); +} + +bool hpd0_ack( + struct irq_service *irq_service, + const struct irq_source_info *info) +{ + uint32_t addr = info->status_reg; + uint32_t value = dm_read_reg(irq_service->ctx, addr); + uint32_t current_status = + get_reg_field_value( + value, + HPD0_DC_HPD_INT_STATUS, + DC_HPD_SENSE_DELAYED); + + dal_irq_service_ack_generic(irq_service, info); + + value = dm_read_reg(irq_service->ctx, info->enable_reg); + + set_reg_field_value( + value, + current_status ? 0 : 1, + HPD0_DC_HPD_INT_CONTROL, + DC_HPD_INT_POLARITY); + + dm_write_reg(irq_service->ctx, info->enable_reg, value); + + return true; +} + +bool hpd1_ack( + struct irq_service *irq_service, + const struct irq_source_info *info) +{ + uint32_t addr = info->status_reg; + uint32_t value = dm_read_reg(irq_service->ctx, addr); + uint32_t current_status = + get_reg_field_value( + value, + DC_HPD1_INT_STATUS, + DC_HPD1_SENSE_DELAYED); + + dal_irq_service_ack_generic(irq_service, info); + + value = dm_read_reg(irq_service->ctx, info->enable_reg); + + set_reg_field_value( + value, + current_status ? 0 : 1, + DC_HPD1_INT_CONTROL, + DC_HPD1_INT_POLARITY); + + dm_write_reg(irq_service->ctx, info->enable_reg, value); + + return true; +} |