summaryrefslogtreecommitdiff
path: root/sound/soc/img
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/img')
-rw-r--r--sound/soc/img/img-spdif-in.c39
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