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MLK-23942-5 phy: phy-mixel-lvds-combo: Add runtime PM support 

This patch adds runtime PM support for the Mixel LVDS combo PHY driver.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Sandor Yu <Sandor.yu@nxp.com>
This commit is contained in:
Liu Ying 2020-05-07 15:58:50 +08:00
parent 1ab2b80c66
commit cd897aa641
1 changed files with 29 additions and 2 deletions
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31
drivers/phy/phy-mixel-lvds-combo.c
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@ -1,5 +1,5 @@
/*
* Copyright 2017-2019 NXP
* Copyright 2017-2020 NXP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -129,6 +129,8 @@ void mixel_phy_combo_lvds_set_phy_speed(struct phy *phy,
if (fvco < MIN_PLL_VCO_FREQ || fvco > MAX_PLL_VCO_FREQ)
dev_warn(dev, "PLL VCO frequency %lu is out of range\n", fvco);
phy_pm_runtime_get_sync(phy);
clk_prepare_enable(lvds_phy->phy_clk);
mutex_lock(&lvds_phy->lock);
phy_ctrl_write(phy, CO, CO_DIV(div));
@ -136,6 +138,8 @@ void mixel_phy_combo_lvds_set_phy_speed(struct phy *phy,
clk_disable_unprepare(lvds_phy->phy_clk);
clk_set_rate(lvds_phy->phy_clk, phy_clk_rate);
phy_pm_runtime_put(phy);
}
EXPORT_SYMBOL_GPL(mixel_phy_combo_lvds_set_phy_speed);
@ -144,6 +148,8 @@ void mixel_phy_combo_lvds_set_hsync_pol(struct phy *phy, bool active_high)
struct mixel_lvds_phy *lvds_phy = phy_get_drvdata(phy);
u32 val;
phy_pm_runtime_get_sync(phy);
clk_prepare_enable(lvds_phy->phy_clk);
mutex_lock(&lvds_phy->lock);
val = phy_csr_read(phy, SS);
@ -153,6 +159,8 @@ void mixel_phy_combo_lvds_set_hsync_pol(struct phy *phy, bool active_high)
phy_csr_write(phy, SS, val);
mutex_unlock(&lvds_phy->lock);
clk_disable_unprepare(lvds_phy->phy_clk);
phy_pm_runtime_put(phy);
}
EXPORT_SYMBOL_GPL(mixel_phy_combo_lvds_set_hsync_pol);
@ -161,6 +169,8 @@ void mixel_phy_combo_lvds_set_vsync_pol(struct phy *phy, bool active_high)
struct mixel_lvds_phy *lvds_phy = phy_get_drvdata(phy);
u32 val;
phy_pm_runtime_get_sync(phy);
clk_prepare_enable(lvds_phy->phy_clk);
mutex_lock(&lvds_phy->lock);
val = phy_csr_read(phy, SS);
@ -170,6 +180,8 @@ void mixel_phy_combo_lvds_set_vsync_pol(struct phy *phy, bool active_high)
phy_csr_write(phy, SS, val);
mutex_unlock(&lvds_phy->lock);
clk_disable_unprepare(lvds_phy->phy_clk);
phy_pm_runtime_put(phy);
}
EXPORT_SYMBOL_GPL(mixel_phy_combo_lvds_set_vsync_pol);
@ -284,17 +296,31 @@ static int mixel_lvds_combo_phy_probe(struct platform_device *pdev)
lvds_phy->dev = dev;
mutex_init(&lvds_phy->lock);
pm_runtime_enable(dev);
lvds_phy->phy = devm_phy_create(dev, NULL, &mixel_lvds_combo_phy_ops);
if (IS_ERR(lvds_phy->phy)) {
dev_err(dev, "failed to create phy\n");
pm_runtime_disable(dev);
return PTR_ERR(lvds_phy->phy);
}
phy_set_drvdata(lvds_phy->phy, lvds_phy);
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
if (IS_ERR(phy_provider)) {
pm_runtime_disable(dev);
return PTR_ERR(phy_provider);
}
return PTR_ERR_OR_ZERO(phy_provider);
return 0;
}
static int mixel_lvds_combo_phy_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
return 0;
}
static const struct of_device_id mixel_lvds_combo_phy_of_match[] = {
@ -305,6 +331,7 @@ MODULE_DEVICE_TABLE(of, mixel_lvds_combo_phy_of_match);
static struct platform_driver mixel_lvds_combo_phy_driver = {
.probe = mixel_lvds_combo_phy_probe,
.remove = mixel_lvds_combo_phy_remove,
.driver = {
.name = "mixel-lvds-combo-phy",
.of_match_table = mixel_lvds_combo_phy_of_match,