Hi Srinivasa,
On Mon, Nov 28, 2022 at 8:50 AM Srinivasa Rao Mandadapu
<quic_srivasam@xxxxxxxxxxx> wrote:
> Update lpass sc7180 platform driver with PM ops, such as
> system supend and resume callbacks.
> This update is required to disable clocks during supend and
> avoid XO shutdown issue.
>
> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@xxxxxxxxxxx>
> Tested-by: Rahul Ajmeriya <quic_rajmeriy@xxxxxxxxxxx>
Thanks for your patch, which is now commit 2d68148f8f85ca5a ("ASoC:
qcom: lpass-sc7180: Add system suspend/resume PM ops") in next-20221129.
> --- a/sound/soc/qcom/lpass-sc7180.c
> +++ b/sound/soc/qcom/lpass-sc7180.c
> @@ -12,6 +12,7 @@
> #include <linux/module.h>
> #include <linux/of.h>
> #include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> #include <dt-bindings/sound/sc7180-lpass.h>
> #include <sound/pcm.h>
> #include <sound/soc.h>
> @@ -156,10 +157,34 @@ static int sc7180_lpass_exit(struct platform_device *pdev)
> struct lpass_data *drvdata = platform_get_drvdata(pdev);
>
> clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
> + return 0;
> +}
> +
> +static int sc7180_lpass_dev_resume(struct device *dev)
> +{
> + int ret = 0;
> + struct lpass_data *drvdata = dev_get_drvdata(dev);
>
> + ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
> + if (ret) {
> + dev_err(dev, "sc7180 clk prepare and enable failed\n");
> + return ret;
> + }
> + return ret;
> +}
> +
> +static int sc7180_lpass_dev_suspend(struct device *dev)
> +{
> + struct lpass_data *drvdata = dev_get_drvdata(dev);
> +
> + clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
> return 0;
> }
noreply@xxxxxxxxxxxxxx reports for e.g. m68k-allmodconfig:
sound/soc/qcom/lpass-sc7180.c:179:12: error:
'sc7180_lpass_dev_suspend' defined but not used
[-Werror=unused-function]
sound/soc/qcom/lpass-sc7180.c:166:12: error:
'sc7180_lpass_dev_resume' defined but not used
[-Werror=unused-function]
>
> +static const struct dev_pm_ops sc7180_lpass_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(sc7180_lpass_dev_suspend, sc7180_lpass_dev_resume)
> +};
Please use DEFINE_SIMPLE_DEV_PM_OPS()...
> +
> static struct lpass_variant sc7180_data = {
> .i2sctrl_reg_base = 0x1000,
> .i2sctrl_reg_stride = 0x1000,
> @@ -293,6 +318,7 @@ static struct platform_driver sc7180_lpass_cpu_platform_driver = {
> .driver = {
> .name = "sc7180-lpass-cpu",
> .of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id),
> + .pm = &sc7180_lpass_pm_ops,
... and pm_sleep_ptr().
> },
> .probe = asoc_qcom_lpass_cpu_platform_probe,
> .remove = asoc_qcom_lpass_cpu_platform_remove,
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
