On Wed, 12 Aug 2015, Richard Fitzgerald wrote:
> Currently runtime_suspend will fully power off the codec if
> the jack detection is not enabled. Not all future codecs will
> have jack detection so to prepare for these codecs this patch
> factors out the check so that it be called as needed in the
> existing codec-specific switch cases.
>
> Signed-off-by: Richard Fitzgerald <r...@opensource.wolfsonmicro.com>
> ---
> drivers/mfd/arizona-core.c | 41 ++++++++++++++++++++++++++++++++---------
> 1 file changed, 32 insertions(+), 9 deletions(-)
For my own reference:
Acked-by: Lee Jones <lee.jo...@linaro.org>
> diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
> index 33f3db4..43ca30b 100644
> --- a/drivers/mfd/arizona-core.c
> +++ b/drivers/mfd/arizona-core.c
> @@ -489,6 +489,23 @@ static int arizona_connect_dcvdd(struct arizona *arizona)
> return ret;
> }
>
> +static int arizona_is_jack_det_active(struct arizona *arizona)
> +{
> + unsigned int val;
> + int ret;
> +
> + ret = regmap_read(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, &val);
> + if (ret) {
> + dev_err(arizona->dev,
> + "Failed to check jack det status: %d\n", ret);
> + return ret;
> + } else if (val & ARIZONA_JD1_ENA) {
> + return 1;
> + } else {
> + return 0;
> + }
> +}
> +
> static int arizona_runtime_resume(struct device *dev)
> {
> struct arizona *arizona = dev_get_drvdata(dev);
> @@ -613,20 +630,18 @@ err:
> static int arizona_runtime_suspend(struct device *dev)
> {
> struct arizona *arizona = dev_get_drvdata(dev);
> - unsigned int val;
> + unsigned int jd_active = 0;
> int ret;
>
> dev_dbg(arizona->dev, "Entering AoD mode\n");
>
> - ret = regmap_read(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, &val);
> - if (ret) {
> - dev_err(dev, "Failed to check jack det status: %d\n", ret);
> - return ret;
> - }
> -
> switch (arizona->type) {
> case WM5110:
> case WM8280:
> + jd_active = arizona_is_jack_det_active(arizona);
> + if (jd_active < 0)
> + return jd_active;
> +
> if (arizona->external_dcvdd) {
> ret = arizona_isolate_dcvdd(arizona);
> if (ret != 0)
> @@ -648,13 +663,17 @@ static int arizona_runtime_suspend(struct device *dev)
> }
> break;
> case WM5102:
> + jd_active = arizona_is_jack_det_active(arizona);
> + if (jd_active < 0)
> + return jd_active;
> +
> if (arizona->external_dcvdd) {
> ret = arizona_isolate_dcvdd(arizona);
> if (ret != 0)
> return ret;
> }
>
> - if (!(val & ARIZONA_JD1_ENA)) {
> + if (!jd_active) {
> ret = regmap_write(arizona->regmap,
> ARIZONA_WRITE_SEQUENCER_CTRL_3, 0x0);
> if (ret) {
> @@ -666,6 +685,10 @@ static int arizona_runtime_suspend(struct device *dev)
> }
> break;
> default:
> + jd_active = arizona_is_jack_det_active(arizona);
> + if (jd_active < 0)
> + return jd_active;
> +
> if (arizona->external_dcvdd) {
> ret = arizona_isolate_dcvdd(arizona);
> if (ret != 0)
> @@ -679,7 +702,7 @@ static int arizona_runtime_suspend(struct device *dev)
> regulator_disable(arizona->dcvdd);
>
> /* Allow us to completely power down if no jack detection */
> - if (!(val & ARIZONA_JD1_ENA)) {
> + if (!jd_active) {
> dev_dbg(arizona->dev, "Fully powering off\n");
>
> arizona->has_fully_powered_off = true;
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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