diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c new file mode 100644 index 0000000000..d849b1eaa4 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c @@ -0,0 +1,161 @@ +/* + * Copyright 2021 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 "reg_helper.h" +#include "core_types.h" +#include "dc_dmub_srv.h" +#include "dcn31_panel_cntl.h" +#include "atom.h" + +#define TO_DCN31_PANEL_CNTL(panel_cntl)\ + container_of(panel_cntl, struct dcn31_panel_cntl, base) + +#define CTX \ + dcn31_panel_cntl->base.ctx + +#define DC_LOGGER \ + dcn31_panel_cntl->base.ctx->logger + +static bool dcn31_query_backlight_info(struct panel_cntl *panel_cntl, union dmub_rb_cmd *cmd) +{ + struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(panel_cntl); + struct dc_dmub_srv *dc_dmub_srv = panel_cntl->ctx->dmub_srv; + + if (!dc_dmub_srv) + return false; + + memset(cmd, 0, sizeof(*cmd)); + cmd->panel_cntl.header.type = DMUB_CMD__PANEL_CNTL; + cmd->panel_cntl.header.sub_type = DMUB_CMD__PANEL_CNTL_QUERY_BACKLIGHT_INFO; + cmd->panel_cntl.header.payload_bytes = sizeof(cmd->panel_cntl.data); + cmd->panel_cntl.data.pwrseq_inst = dcn31_panel_cntl->base.pwrseq_inst; + + return dm_execute_dmub_cmd(dc_dmub_srv->ctx, cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY); +} + +static uint32_t dcn31_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_cntl) +{ + union dmub_rb_cmd cmd; + + if (!dcn31_query_backlight_info(panel_cntl, &cmd)) + return 0; + + return cmd.panel_cntl.data.current_backlight; +} + +static uint32_t dcn31_panel_cntl_hw_init(struct panel_cntl *panel_cntl) +{ + struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(panel_cntl); + struct dc_dmub_srv *dc_dmub_srv = panel_cntl->ctx->dmub_srv; + union dmub_rb_cmd cmd; + + if (!dc_dmub_srv) + return 0; + + memset(&cmd, 0, sizeof(cmd)); + cmd.panel_cntl.header.type = DMUB_CMD__PANEL_CNTL; + cmd.panel_cntl.header.sub_type = DMUB_CMD__PANEL_CNTL_HW_INIT; + cmd.panel_cntl.header.payload_bytes = sizeof(cmd.panel_cntl.data); + cmd.panel_cntl.data.pwrseq_inst = dcn31_panel_cntl->base.pwrseq_inst; + cmd.panel_cntl.data.bl_pwm_cntl = panel_cntl->stored_backlight_registers.BL_PWM_CNTL; + cmd.panel_cntl.data.bl_pwm_period_cntl = panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL; + cmd.panel_cntl.data.bl_pwm_ref_div1 = + panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV; + cmd.panel_cntl.data.bl_pwm_ref_div2 = + panel_cntl->stored_backlight_registers.PANEL_PWRSEQ_REF_DIV2; + if (!dm_execute_dmub_cmd(dc_dmub_srv->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY)) + return 0; + + panel_cntl->stored_backlight_registers.BL_PWM_CNTL = cmd.panel_cntl.data.bl_pwm_cntl; + panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = 0; /* unused */ + panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL = cmd.panel_cntl.data.bl_pwm_period_cntl; + panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV = + cmd.panel_cntl.data.bl_pwm_ref_div1; + panel_cntl->stored_backlight_registers.PANEL_PWRSEQ_REF_DIV2 = + cmd.panel_cntl.data.bl_pwm_ref_div2; + + return cmd.panel_cntl.data.current_backlight; +} + +static void dcn31_panel_cntl_destroy(struct panel_cntl **panel_cntl) +{ + struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(*panel_cntl); + + kfree(dcn31_panel_cntl); + *panel_cntl = NULL; +} + +static bool dcn31_is_panel_backlight_on(struct panel_cntl *panel_cntl) +{ + union dmub_rb_cmd cmd; + + if (!dcn31_query_backlight_info(panel_cntl, &cmd)) + return false; + + return cmd.panel_cntl.data.is_backlight_on; +} + +static bool dcn31_is_panel_powered_on(struct panel_cntl *panel_cntl) +{ + union dmub_rb_cmd cmd; + + if (!dcn31_query_backlight_info(panel_cntl, &cmd)) + return false; + + return cmd.panel_cntl.data.is_powered_on; +} + +static void dcn31_store_backlight_level(struct panel_cntl *panel_cntl) +{ + union dmub_rb_cmd cmd; + + if (!dcn31_query_backlight_info(panel_cntl, &cmd)) + return; + + panel_cntl->stored_backlight_registers.BL_PWM_CNTL = cmd.panel_cntl.data.bl_pwm_cntl; + panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = 0; /* unused */ + panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL = cmd.panel_cntl.data.bl_pwm_period_cntl; + panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV = + cmd.panel_cntl.data.bl_pwm_ref_div1; +} + +static const struct panel_cntl_funcs dcn31_link_panel_cntl_funcs = { + .destroy = dcn31_panel_cntl_destroy, + .hw_init = dcn31_panel_cntl_hw_init, + .is_panel_backlight_on = dcn31_is_panel_backlight_on, + .is_panel_powered_on = dcn31_is_panel_powered_on, + .store_backlight_level = dcn31_store_backlight_level, + .get_current_backlight = dcn31_get_16_bit_backlight_from_pwm, +}; + +void dcn31_panel_cntl_construct( + struct dcn31_panel_cntl *dcn31_panel_cntl, + const struct panel_cntl_init_data *init_data) +{ + dcn31_panel_cntl->base.funcs = &dcn31_link_panel_cntl_funcs; + dcn31_panel_cntl->base.ctx = init_data->ctx; + dcn31_panel_cntl->base.inst = init_data->inst; + dcn31_panel_cntl->base.pwrseq_inst = init_data->pwrseq_inst; +} |