diff options
| author | Inha Song <ideal.song@samsung.com> | 2015-04-15 16:38:27 +0900 |
|---|---|---|
| committer | Seung-Woo Kim <sw0312.kim@samsung.com> | 2016-12-14 13:43:21 +0900 |
| commit | 90fef9aa1b33bdbe436ec94177d7ec834371b6a8 (patch) | |
| tree | 1a1e6aa47a427c6c71db1337c1c0f7962fbf7fd8 /sound | |
| parent | 8bc75d58ba92b18a68da7332432287adffb41135 (diff) | |
LOCAL / ASoC: samsung: Add pm ops to lpass driver
This patch add pm ops to lpass driver. After resume,
We should toggle LPASS_CORE_SW_RESET to reset lpass IPs.
Signed-off-by: Inha Song <ideal.song@samsung.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/samsung/lpass.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sound/soc/samsung/lpass.c b/sound/soc/samsung/lpass.c index 8129a8082967..c9be9e896225 100644 --- a/sound/soc/samsung/lpass.c +++ b/sound/soc/samsung/lpass.c @@ -67,6 +67,21 @@ static void lpass_enable(struct lpass_info *lpass) lpass_core_sw_reset(lpass, SW_RESET_MEM); } +static void lpass_disable(struct lpass_info *lpass) +{ + if (!lpass->reg_pmu) + return; + + /* Masks SFR, DMA, I2S Interrupt */ + writel(0, lpass->reg_sfr + SFR_LPASS_INTR_CA5_MASK); + + writel(0, lpass->reg_sfr + SFR_LPASS_INTR_CPU_MASK); + + /* Inactive related PADs from retention state */ + regmap_write(lpass->reg_pmu, + EXYNOS5433_PAD_RETENTION_AUD_OPTION_OFFSET, 0); +} + static int lpass_probe(struct platform_device *pdev) { struct lpass_info *lpass; @@ -108,16 +123,40 @@ static int lpass_probe(struct platform_device *pdev) return 0; } +static int lpass_suspend(struct device *dev) +{ + struct lpass_info *lpass = dev_get_drvdata(dev); + + lpass_disable(lpass); + + return 0; +} + +static int lpass_resume(struct device *dev) +{ + struct lpass_info *lpass = dev_get_drvdata(dev); + + lpass_enable(lpass); + + return 0; +} + static const struct of_device_id lpass_of_match[] = { { .compatible = "samsung,exynos5433-lpass", }, { }, }; MODULE_DEVICE_TABLE(of, lpass_of_match); +static const struct dev_pm_ops lpass_pm_ops = { + .suspend = lpass_suspend, + .resume = lpass_resume, +}; + static struct platform_driver lpass_driver = { .driver = { .name = "samsung-lpass", .owner = THIS_MODULE, + .pm = &lpass_pm_ops, .of_match_table = lpass_of_match, }, .probe = lpass_probe, |