diff options
Diffstat (limited to 'sound/soc/img')
| -rw-r--r-- | sound/soc/img/img-spdif-in.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/sound/soc/img/img-spdif-in.c b/sound/soc/img/img-spdif-in.c index 8adfd65d4390..be5a64a44252 100644 --- a/sound/soc/img/img-spdif-in.c +++ b/sound/soc/img/img-spdif-in.c @@ -82,6 +82,8 @@ struct img_spdif_in { unsigned int single_freq; unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN]; bool active; + u32 suspend_clkgen; + u32 suspend_ctl; /* Write-only registers */ unsigned int aclkgen_regs[IMG_SPDIF_IN_NUM_ACLKGEN]; @@ -785,16 +787,51 @@ static int img_spdif_in_dev_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int img_spdif_in_suspend(struct device *dev) +{ + struct img_spdif_in *spdif = dev_get_drvdata(dev); + + spdif->suspend_clkgen = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CLKGEN); + spdif->suspend_ctl = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL); + + clk_disable_unprepare(spdif->clk_sys); + + return 0; +} + +static int img_spdif_in_resume(struct device *dev) +{ + struct img_spdif_in *spdif = dev_get_drvdata(dev); + int i; + + clk_prepare_enable(spdif->clk_sys); + + for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) + img_spdif_in_aclkgen_writel(spdif, i); + + img_spdif_in_writel(spdif, spdif->suspend_clkgen, IMG_SPDIF_IN_CLKGEN); + img_spdif_in_writel(spdif, spdif->suspend_ctl, IMG_SPDIF_IN_CTL); + + return 0; +} +#endif + static const struct of_device_id img_spdif_in_of_match[] = { { .compatible = "img,spdif-in" }, {} }; MODULE_DEVICE_TABLE(of, img_spdif_in_of_match); +static const struct dev_pm_ops img_spdif_in_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(img_spdif_in_suspend, img_spdif_in_resume) +}; + static struct platform_driver img_spdif_in_driver = { .driver = { .name = "img-spdif-in", - .of_match_table = img_spdif_in_of_match + .of_match_table = img_spdif_in_of_match, + .pm = &img_spdif_in_pm_ops }, .probe = img_spdif_in_probe, .remove = img_spdif_in_dev_remove |