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https://github.com/openwrt/openwrt.git
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5d921aa72f
Add support for hardware I2C and PWM units found in the Filogic SoCs as well as the CPU thermal support. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
67 lines
1.9 KiB
Diff
67 lines
1.9 KiB
Diff
--- a/drivers/iio/adc/mt6577_auxadc.c
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+++ b/drivers/iio/adc/mt6577_auxadc.c
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@@ -42,6 +42,7 @@ struct mtk_auxadc_compatible {
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struct mt6577_auxadc_device {
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void __iomem *reg_base;
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struct clk *adc_clk;
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+ struct clk *adc_32k_clk;
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struct mutex lock;
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const struct mtk_auxadc_compatible *dev_comp;
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};
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@@ -222,6 +223,12 @@ static int __maybe_unused mt6577_auxadc_
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return ret;
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}
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+ ret = clk_prepare_enable(adc_dev->adc_32k_clk);
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+ if (ret) {
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+ pr_err("failed to enable auxadc clock\n");
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+ return ret;
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+ }
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+
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mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
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MT6577_AUXADC_PDN_EN, 0);
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mdelay(MT6577_AUXADC_POWER_READY_MS);
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@@ -236,6 +243,8 @@ static int __maybe_unused mt6577_auxadc_
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mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
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0, MT6577_AUXADC_PDN_EN);
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+
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+ clk_disable_unprepare(adc_dev->adc_32k_clk);
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clk_disable_unprepare(adc_dev->adc_clk);
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return 0;
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@@ -277,6 +286,17 @@ static int mt6577_auxadc_probe(struct pl
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return ret;
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}
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+ adc_dev->adc_32k_clk = devm_clk_get(&pdev->dev, "32k");
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+ if (IS_ERR(adc_dev->adc_32k_clk)) {
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+ dev_err(&pdev->dev, "failed to get auxadc 32k clock\n");
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+ } else {
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+ ret = clk_prepare_enable(adc_dev->adc_32k_clk);
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+ if (ret) {
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+ dev_err(&pdev->dev, "failed to enable auxadc 32k clock\n");
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+ return ret;
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+ }
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+ }
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+
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adc_clk_rate = clk_get_rate(adc_dev->adc_clk);
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if (!adc_clk_rate) {
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ret = -EINVAL;
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@@ -306,6 +326,7 @@ err_power_off:
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mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
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0, MT6577_AUXADC_PDN_EN);
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err_disable_clk:
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+ clk_disable_unprepare(adc_dev->adc_32k_clk);
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clk_disable_unprepare(adc_dev->adc_clk);
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return ret;
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}
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@@ -320,6 +341,7 @@ static int mt6577_auxadc_remove(struct p
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mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
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0, MT6577_AUXADC_PDN_EN);
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+ clk_disable_unprepare(adc_dev->adc_32k_clk);
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clk_disable_unprepare(adc_dev->adc_clk);
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return 0;
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