diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_power.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_power.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_power.c b/drivers/gpu/drm/msm/dp/dp_power.c deleted file mode 100644 index c4843dd69f..0000000000 --- a/drivers/gpu/drm/msm/dp/dp_power.c +++ /dev/null @@ -1,183 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. - */ - -#define pr_fmt(fmt) "[drm-dp] %s: " fmt, __func__ - -#include <linux/clk.h> -#include <linux/clk-provider.h> -#include <linux/regulator/consumer.h> -#include <linux/pm_opp.h> -#include "dp_power.h" -#include "msm_drv.h" - -struct dp_power_private { - struct dp_parser *parser; - struct device *dev; - struct drm_device *drm_dev; - struct clk *link_clk_src; - struct clk *pixel_provider; - struct clk *link_provider; - - struct dp_power dp_power; -}; - -static int dp_power_clk_init(struct dp_power_private *power) -{ - int rc = 0; - struct dss_module_power *core, *ctrl, *stream; - struct device *dev = power->dev; - - core = &power->parser->mp[DP_CORE_PM]; - ctrl = &power->parser->mp[DP_CTRL_PM]; - stream = &power->parser->mp[DP_STREAM_PM]; - - rc = devm_clk_bulk_get(dev, core->num_clk, core->clocks); - if (rc) - return rc; - - rc = devm_clk_bulk_get(dev, ctrl->num_clk, ctrl->clocks); - if (rc) - return -ENODEV; - - rc = devm_clk_bulk_get(dev, stream->num_clk, stream->clocks); - if (rc) - return -ENODEV; - - return 0; -} - -int dp_power_clk_status(struct dp_power *dp_power, enum dp_pm_type pm_type) -{ - struct dp_power_private *power; - - power = container_of(dp_power, struct dp_power_private, dp_power); - - drm_dbg_dp(power->drm_dev, - "core_clk_on=%d link_clk_on=%d stream_clk_on=%d\n", - dp_power->core_clks_on, dp_power->link_clks_on, dp_power->stream_clks_on); - - if (pm_type == DP_CORE_PM) - return dp_power->core_clks_on; - - if (pm_type == DP_CTRL_PM) - return dp_power->link_clks_on; - - if (pm_type == DP_STREAM_PM) - return dp_power->stream_clks_on; - - return 0; -} - -int dp_power_clk_enable(struct dp_power *dp_power, - enum dp_pm_type pm_type, bool enable) -{ - int rc = 0; - struct dp_power_private *power; - struct dss_module_power *mp; - - power = container_of(dp_power, struct dp_power_private, dp_power); - - if (pm_type != DP_CORE_PM && pm_type != DP_CTRL_PM && - pm_type != DP_STREAM_PM) { - DRM_ERROR("unsupported power module: %s\n", - dp_parser_pm_name(pm_type)); - return -EINVAL; - } - - if (enable) { - if (pm_type == DP_CORE_PM && dp_power->core_clks_on) { - drm_dbg_dp(power->drm_dev, - "core clks already enabled\n"); - return 0; - } - - if (pm_type == DP_CTRL_PM && dp_power->link_clks_on) { - drm_dbg_dp(power->drm_dev, - "links clks already enabled\n"); - return 0; - } - - if (pm_type == DP_STREAM_PM && dp_power->stream_clks_on) { - drm_dbg_dp(power->drm_dev, - "pixel clks already enabled\n"); - return 0; - } - - if ((pm_type == DP_CTRL_PM) && (!dp_power->core_clks_on)) { - drm_dbg_dp(power->drm_dev, - "Enable core clks before link clks\n"); - mp = &power->parser->mp[DP_CORE_PM]; - - rc = clk_bulk_prepare_enable(mp->num_clk, mp->clocks); - if (rc) - return rc; - - dp_power->core_clks_on = true; - } - } - - mp = &power->parser->mp[pm_type]; - if (enable) { - rc = clk_bulk_prepare_enable(mp->num_clk, mp->clocks); - if (rc) - return rc; - } else { - clk_bulk_disable_unprepare(mp->num_clk, mp->clocks); - } - - if (pm_type == DP_CORE_PM) - dp_power->core_clks_on = enable; - else if (pm_type == DP_STREAM_PM) - dp_power->stream_clks_on = enable; - else - dp_power->link_clks_on = enable; - - drm_dbg_dp(power->drm_dev, "%s clocks for %s\n", - enable ? "enable" : "disable", - dp_parser_pm_name(pm_type)); - drm_dbg_dp(power->drm_dev, - "strem_clks:%s link_clks:%s core_clks:%s\n", - dp_power->stream_clks_on ? "on" : "off", - dp_power->link_clks_on ? "on" : "off", - dp_power->core_clks_on ? "on" : "off"); - - return 0; -} - -int dp_power_client_init(struct dp_power *dp_power) -{ - struct dp_power_private *power; - - power = container_of(dp_power, struct dp_power_private, dp_power); - - return dp_power_clk_init(power); -} - -int dp_power_init(struct dp_power *dp_power) -{ - return dp_power_clk_enable(dp_power, DP_CORE_PM, true); -} - -int dp_power_deinit(struct dp_power *dp_power) -{ - return dp_power_clk_enable(dp_power, DP_CORE_PM, false); -} - -struct dp_power *dp_power_get(struct device *dev, struct dp_parser *parser) -{ - struct dp_power_private *power; - struct dp_power *dp_power; - - power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL); - if (!power) - return ERR_PTR(-ENOMEM); - - power->parser = parser; - power->dev = dev; - - dp_power = &power->dp_power; - - return dp_power; -} |