| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | From f11933205182a3da44e7f99d899dd27adafcb6d5 Mon Sep 17 00:00:00 2001 |
| 2 | From: Shengjiu Wang <shengjiu.wang@nxp.com> |
| 3 | Date: Tue, 29 Jan 2019 14:51:24 +0800 |
| 4 | Subject: [PATCH] ASoC: fsl_sai: support multi power domain |
| 5 | |
| 6 | support multi power domain |
| 7 | |
| 8 | Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> |
| 9 | --- |
| 10 | sound/soc/fsl/fsl_sai.c | 20 ++++++++++++++++++++ |
| 11 | 1 file changed, 20 insertions(+) |
| 12 | |
| 13 | --- a/sound/soc/fsl/fsl_sai.c |
| 14 | +++ b/sound/soc/fsl/fsl_sai.c |
| 15 | @@ -16,6 +16,7 @@ |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/time.h> |
| 18 | #include <linux/pm_qos.h> |
| 19 | +#include <linux/pm_domain.h> |
| 20 | #include <sound/core.h> |
| 21 | #include <sound/dmaengine_pcm.h> |
| 22 | #include <sound/pcm_params.h> |
| 23 | @@ -1357,6 +1358,7 @@ static int fsl_sai_probe(struct platform |
| 24 | int index; |
| 25 | struct regmap_config fsl_sai_regmap_config = fsl_sai_v2_regmap_config; |
| 26 | unsigned long irqflags = 0; |
| 27 | + int num_domains = 0; |
| 28 | |
| 29 | sai = devm_kzalloc(&pdev->dev, sizeof(*sai), GFP_KERNEL); |
| 30 | if (!sai) |
| 31 | @@ -1409,6 +1411,24 @@ static int fsl_sai_probe(struct platform |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | + num_domains = of_count_phandle_with_args(np, "power-domains", |
| 36 | + "#power-domain-cells"); |
| 37 | + for (i = 0; i < num_domains; i++) { |
| 38 | + struct device *pd_dev; |
| 39 | + struct device_link *link; |
| 40 | + |
| 41 | + pd_dev = dev_pm_domain_attach_by_id(&pdev->dev, i); |
| 42 | + if (IS_ERR(pd_dev)) |
| 43 | + return PTR_ERR(pd_dev); |
| 44 | + |
| 45 | + link = device_link_add(&pdev->dev, pd_dev, |
| 46 | + DL_FLAG_STATELESS | |
| 47 | + DL_FLAG_PM_RUNTIME | |
| 48 | + DL_FLAG_RPM_ACTIVE); |
| 49 | + if (IS_ERR(link)) |
| 50 | + return PTR_ERR(link); |
| 51 | + } |
| 52 | + |
| 53 | sai->pll8k_clk = devm_clk_get(&pdev->dev, "pll8k"); |
| 54 | if (IS_ERR(sai->pll8k_clk)) |
| 55 | sai->pll8k_clk = NULL; |