diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mtk.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mtk.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c index 2e55368dc4d8..19cd27941747 100644 --- a/drivers/clk/mediatek/clk-mtk.c +++ b/drivers/clk/mediatek/clk-mtk.c @@ -13,6 +13,7 @@ #include <linux/of.h> #include <linux/of_address.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> #include "clk-mtk.h" @@ -494,6 +495,18 @@ static int __mtk_clk_simple_probe(struct platform_device *pdev, return IS_ERR(base) ? PTR_ERR(base) : -ENOMEM; } + + if (mcd->need_runtime_pm) { + devm_pm_runtime_enable(&pdev->dev); + /* + * Do a pm_runtime_resume_and_get() to workaround a possible + * deadlock between clk_register() and the genpd framework. + */ + r = pm_runtime_resume_and_get(&pdev->dev); + if (r) + return r; + } + /* Calculate how many clk_hw_onecell_data entries to allocate */ num_clks = mcd->num_clks + mcd->num_composite_clks; num_clks += mcd->num_fixed_clks + mcd->num_factor_clks; @@ -574,6 +587,9 @@ static int __mtk_clk_simple_probe(struct platform_device *pdev, goto unregister_clks; } + if (mcd->need_runtime_pm) + pm_runtime_put(&pdev->dev); + return r; unregister_clks: @@ -604,6 +620,9 @@ free_data: free_base: if (mcd->shared_io && base) iounmap(base); + + if (mcd->need_runtime_pm) + pm_runtime_put(&pdev->dev); return r; } @@ -666,4 +685,20 @@ void mtk_clk_simple_remove(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(mtk_clk_simple_remove); +struct regmap *mtk_clk_get_hwv_regmap(struct device_node *node) +{ + struct device_node *hwv_node; + struct regmap *regmap_hwv; + + hwv_node = of_parse_phandle(node, "mediatek,hardware-voter", 0); + if (!hwv_node) + return NULL; + + regmap_hwv = device_node_to_regmap(hwv_node); + of_node_put(hwv_node); + + return regmap_hwv; +} +EXPORT_SYMBOL_GPL(mtk_clk_get_hwv_regmap); + MODULE_LICENSE("GPL"); |