diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c | 123 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/power/power_helpers.c | 3 |
3 files changed, 52 insertions, 84 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c index dea40b322191..e927c8934681 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_dmcu.c @@ -51,7 +51,6 @@ #define PSR_SET_WAITLOOP 0x31 #define MCP_INIT_DMCU 0x88 #define MCP_INIT_IRAM 0x89 -#define MCP_DMCU_VERSION 0x90 #define MASTER_COMM_CNTL_REG__MASTER_COMM_INTERRUPT_MASK 0x00000001L static bool dce_dmcu_init(struct dmcu *dmcu) @@ -317,38 +316,11 @@ static void dce_get_psr_wait_loop( } #if defined(CONFIG_DRM_AMD_DC_DCN1_0) -static void dcn10_get_dmcu_state(struct dmcu *dmcu) -{ - struct dce_dmcu *dmcu_dce = TO_DCE_DMCU(dmcu); - uint32_t dmcu_state_offset = 0xf6; - - /* Enable write access to IRAM */ - REG_UPDATE_2(DMCU_RAM_ACCESS_CTRL, - IRAM_HOST_ACCESS_EN, 1, - IRAM_RD_ADDR_AUTO_INC, 1); - - REG_WAIT(DMU_MEM_PWR_CNTL, DMCU_IRAM_MEM_PWR_STATE, 0, 2, 10); - - /* Write address to IRAM_RD_ADDR in DMCU_IRAM_RD_CTRL */ - REG_WRITE(DMCU_IRAM_RD_CTRL, dmcu_state_offset); - - /* Read data from IRAM_RD_DATA in DMCU_IRAM_RD_DATA*/ - dmcu->dmcu_state = REG_READ(DMCU_IRAM_RD_DATA); - - /* Disable write access to IRAM to allow dynamic sleep state */ - REG_UPDATE_2(DMCU_RAM_ACCESS_CTRL, - IRAM_HOST_ACCESS_EN, 0, - IRAM_RD_ADDR_AUTO_INC, 0); -} - static void dcn10_get_dmcu_version(struct dmcu *dmcu) { struct dce_dmcu *dmcu_dce = TO_DCE_DMCU(dmcu); uint32_t dmcu_version_offset = 0xf1; - /* Clear scratch */ - REG_WRITE(DC_DMCU_SCRATCH, 0); - /* Enable write access to IRAM */ REG_UPDATE_2(DMCU_RAM_ACCESS_CTRL, IRAM_HOST_ACCESS_EN, 1, @@ -368,76 +340,65 @@ static void dcn10_get_dmcu_version(struct dmcu *dmcu) REG_UPDATE_2(DMCU_RAM_ACCESS_CTRL, IRAM_HOST_ACCESS_EN, 0, IRAM_RD_ADDR_AUTO_INC, 0); - - /* Send MCP command message to DMCU to get version reply from FW. - * We expect this version should match the one in IRAM, otherwise - * something is wrong with DMCU and we should fail and disable UC. - */ - REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0, 100, 800); - - /* Set command to get DMCU version from microcontroller */ - REG_UPDATE(MASTER_COMM_CMD_REG, MASTER_COMM_CMD_REG_BYTE0, - MCP_DMCU_VERSION); - - /* Notify microcontroller of new command */ - REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1); - - /* Ensure command has been executed before continuing */ - REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0, 100, 800); - - /* Somehow version does not match, so fail and return version 0 */ - if (dmcu->dmcu_version.interface_version != REG_READ(DC_DMCU_SCRATCH)) - dmcu->dmcu_version.interface_version = 0; } static bool dcn10_dmcu_init(struct dmcu *dmcu) { struct dce_dmcu *dmcu_dce = TO_DCE_DMCU(dmcu); + bool status = false; - /* DMCU FW should populate the scratch register if running */ - if (REG_READ(DC_DMCU_SCRATCH) == 0) - return false; - - /* Check state is uninitialized */ - dcn10_get_dmcu_state(dmcu); - - /* If microcontroller is already initialized, do nothing */ - if (dmcu->dmcu_state == DMCU_RUNNING) - return true; - - /* Retrieve and cache the DMCU firmware version. */ - dcn10_get_dmcu_version(dmcu); - - /* Check interface version to confirm firmware is loaded and running */ - if (dmcu->dmcu_version.interface_version == 0) - return false; + /* Definition of DC_DMCU_SCRATCH + * 0 : firmare not loaded + * 1 : PSP load DMCU FW but not initialized + * 2 : Firmware already initialized + */ + dmcu->dmcu_state = REG_READ(DC_DMCU_SCRATCH); - /* Wait until microcontroller is ready to process interrupt */ - REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0, 100, 800); + switch (dmcu->dmcu_state) { + case DMCU_UNLOADED: + status = false; + break; + case DMCU_LOADED_UNINITIALIZED: + /* Wait until microcontroller is ready to process interrupt */ + REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0, 100, 800); - /* Set initialized ramping boundary value */ - REG_WRITE(MASTER_COMM_DATA_REG1, 0xFFFF); + /* Set initialized ramping boundary value */ + REG_WRITE(MASTER_COMM_DATA_REG1, 0xFFFF); - /* Set command to initialize microcontroller */ - REG_UPDATE(MASTER_COMM_CMD_REG, MASTER_COMM_CMD_REG_BYTE0, + /* Set command to initialize microcontroller */ + REG_UPDATE(MASTER_COMM_CMD_REG, MASTER_COMM_CMD_REG_BYTE0, MCP_INIT_DMCU); - /* Notify microcontroller of new command */ - REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1); + /* Notify microcontroller of new command */ + REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1); - /* Ensure command has been executed before continuing */ - REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0, 100, 800); + /* Ensure command has been executed before continuing */ + REG_WAIT(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 0, 100, 800); - // Check state is initialized - dcn10_get_dmcu_state(dmcu); + // Check state is initialized + dmcu->dmcu_state = REG_READ(DC_DMCU_SCRATCH); - // If microcontroller is not in running state, fail - if (dmcu->dmcu_state != DMCU_RUNNING) - return false; + // If microcontroller is not in running state, fail + if (dmcu->dmcu_state == DMCU_RUNNING) { + /* Retrieve and cache the DMCU firmware version. */ + dcn10_get_dmcu_version(dmcu); + status = true; + } else + status = false; - return true; + break; + case DMCU_RUNNING: + status = true; + break; + default: + status = false; + break; + } + + return status; } + static bool dcn10_dmcu_load_iram(struct dmcu *dmcu, unsigned int start_offset, const char *src, diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h index cb85eaa9857f..ed32a7503684 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h @@ -27,9 +27,15 @@ #include "dm_services_types.h" +/* If HW itself ever powered down it will be 0. + * fwDmcuInit will write to 1. + * Driver will only call MCP init if current state is 1, + * and the MCP command will transition this to 2. + */ enum dmcu_state { - DMCU_NOT_INITIALIZED = 0, - DMCU_RUNNING = 1 + DMCU_UNLOADED = 0, + DMCU_LOADED_UNINITIALIZED = 1, + DMCU_RUNNING = 2, }; struct dmcu_version { diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c index c11a443dcbc8..89b082b5d107 100644 --- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c +++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c @@ -56,6 +56,7 @@ static const unsigned char abm_config[abm_defines_max_config][abm_defines_max_le #define NUM_AGGR_LEVEL 4 #define NUM_POWER_FN_SEGS 8 #define NUM_BL_CURVE_SEGS 16 +#define IRAM_RESERVE_AREA_START 0xF0 // reserve 0xF0~0xFF are write by DMCU only #pragma pack(push, 1) /* NOTE: iRAM is 256B in size */ @@ -324,5 +325,5 @@ bool dmcu_load_iram(struct dmcu *dmcu, params, &ram_table); return dmcu->funcs->load_iram( - dmcu, 0, (char *)(&ram_table), sizeof(ram_table)); + dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START); } |