Messages in this thread Patch in this message | | | From | Charles Keepax <> | Subject | [PATCH 3/3] mfd: arizona: Ensure 32k clock is put on driver unbind and error | Date | Fri, 29 May 2020 16:57:42 +0100 |
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Whilst it doesn't matter if the internal 32k clock register settings are cleaned up on exit, as the part will be turned off losing any settings, hence the driver hasn't historially bothered. The external clock should however be cleaned up, as it could cause clocks to be left on, and will at best generate a warning on unbind.
Add clean up on both the probe error path and unbind for the 32k clock.
Fixes: cdd8da8cc66b ("mfd: arizona: Add gating of external MCLKn clocks") Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> --- drivers/mfd/arizona-core.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index 19e0bc3c0683e..000cb82023e35 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -1426,6 +1426,15 @@ int arizona_dev_init(struct arizona *arizona) arizona_irq_exit(arizona); err_pm: pm_runtime_disable(arizona->dev); + + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + case ARIZONA_32KZ_MCLK2: + arizona_clk32k_disable(arizona); + break; + default: + break; + } err_reset: arizona_enable_reset(arizona); regulator_disable(arizona->dcvdd); @@ -1448,6 +1457,15 @@ int arizona_dev_exit(struct arizona *arizona) regulator_disable(arizona->dcvdd); regulator_put(arizona->dcvdd); + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + case ARIZONA_32KZ_MCLK2: + arizona_clk32k_disable(arizona); + break; + default: + break; + } + mfd_remove_devices(arizona->dev); arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona); arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona); -- 2.11.0
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