mfd: arizona: Fully support the use of MCLK1 as the 32kHz clock source
MCLK1 is not in the AoD power domain so if it is used as the 32kHz clock source we need to hold a runtime PM reference to keep the device from going into low power mode. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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7adafc5d97
commit
247fa1920d
drivers/mfd
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@ -39,11 +39,21 @@ int arizona_clk32k_enable(struct arizona *arizona)
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arizona->clk32k_ref++;
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if (arizona->clk32k_ref == 1)
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if (arizona->clk32k_ref == 1) {
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switch (arizona->pdata.clk32k_src) {
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case ARIZONA_32KZ_MCLK1:
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ret = pm_runtime_get_sync(arizona->dev);
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if (ret != 0)
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goto out;
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break;
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}
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ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
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ARIZONA_CLK_32K_ENA,
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ARIZONA_CLK_32K_ENA);
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}
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out:
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if (ret != 0)
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arizona->clk32k_ref--;
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@ -63,10 +73,17 @@ int arizona_clk32k_disable(struct arizona *arizona)
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arizona->clk32k_ref--;
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if (arizona->clk32k_ref == 0)
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if (arizona->clk32k_ref == 0) {
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regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
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ARIZONA_CLK_32K_ENA, 0);
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switch (arizona->pdata.clk32k_src) {
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case ARIZONA_32KZ_MCLK1:
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pm_runtime_put_sync(arizona->dev);
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break;
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}
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}
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mutex_unlock(&arizona->clk_lock);
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return ret;
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