| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 21 Jul 2022 11:40:00 +0530
From: syed sabakareem <Syed.SabaKareem@....com>
To: <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC: <Alexander.Deucher@....com>, <Basavaraj.Hiregoudar@....com>,
<Sunil-kumar.Dommati@....com>, <vijendar.mukunda@....com>,
Syed Saba Kareem <Syed.SabaKareem@....com>,
Vijendar Mukunda <Vijendar.Mukunda@....com>,
"Liam Girdwood" <lgirdwood@...il.com>,
Jaroslav Kysela <perex@...ex.cz>,
"Takashi Iwai" <tiwai@...e.com>,
open list <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/5] ASoC: amd: add RPL Platform init/de-init functions
From: Syed Saba Kareem <Syed.SabaKareem@....com>
Add RPL Platform ACP init/de-init functions.
Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@....com>
Reviewed-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
sound/soc/amd/rpl/rpl-pci-acp6x.c | 92 +++++++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/sound/soc/amd/rpl/rpl-pci-acp6x.c b/sound/soc/amd/rpl/rpl-pci-acp6x.c
index 7a82a978cf24..71ae90a00f36 100644
--- a/sound/soc/amd/rpl/rpl-pci-acp6x.c
+++ b/sound/soc/amd/rpl/rpl-pci-acp6x.c
@@ -17,6 +17,88 @@ struct rpl_dev_data {
void __iomem *acp6x_base;
};
+static int rpl_power_on(void __iomem *acp_base)
+{
+ u32 val;
+ int timeout;
+
+ val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
+
+ if (!val)
+ return val;
+
+ if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
+ rpl_acp_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
+ if (!val)
+ return 0;
+ udelay(1);
+ }
+ return -ETIMEDOUT;
+}
+
+static int rpl_reset(void __iomem *acp_base)
+{
+ u32 val;
+ int timeout;
+
+ rpl_acp_writel(1, acp_base + ACP_SOFT_RESET);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
+ if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
+ break;
+ cpu_relax();
+ }
+ rpl_acp_writel(0, acp_base + ACP_SOFT_RESET);
+ timeout = 0;
+ while (++timeout < 500) {
+ val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
+ if (!val)
+ return 0;
+ cpu_relax();
+ }
+ return -ETIMEDOUT;
+}
+
+static int rpl_init(void __iomem *acp_base)
+{
+ int ret;
+
+ /* power on */
+ ret = rpl_power_on(acp_base);
+ if (ret) {
+ pr_err("ACP power on failed\n");
+ return ret;
+ }
+ rpl_acp_writel(0x01, acp_base + ACP_CONTROL);
+ /* Reset */
+ ret = rpl_reset(acp_base);
+ if (ret) {
+ pr_err("ACP reset failed\n");
+ return ret;
+ }
+ rpl_acp_writel(0x03, acp_base + ACP_CLKMUX_SEL);
+ return 0;
+}
+
+static int rpl_deinit(void __iomem *acp_base)
+{
+ int ret;
+
+ /* Reset */
+ ret = rpl_reset(acp_base);
+ if (ret) {
+ pr_err("ACP reset failed\n");
+ return ret;
+ }
+ rpl_acp_writel(0x00, acp_base + ACP_CLKMUX_SEL);
+ rpl_acp_writel(0x00, acp_base + ACP_CONTROL);
+ return 0;
+}
+
static int snd_rpl_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@@ -59,6 +141,9 @@ static int snd_rpl_probe(struct pci_dev *pci,
}
pci_set_master(pci);
pci_set_drvdata(pci, adata);
+ ret = rpl_init(adata->acp6x_base);
+ if (ret)
+ goto release_regions;
return 0;
release_regions:
pci_release_regions(pci);
@@ -70,6 +155,13 @@ static int snd_rpl_probe(struct pci_dev *pci,
static void snd_rpl_remove(struct pci_dev *pci)
{
+ struct rpl_dev_data *adata;
+ int ret;
+
+ adata = pci_get_drvdata(pci);
+ ret = rpl_deinit(adata->acp6x_base);
+ if (ret)
+ dev_err(&pci->dev, "ACP de-init failed\n");
pci_release_regions(pci);
pci_disable_device(pci);
}
--
2.25.1
Powered by blists - more mailing lists