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Date: Tue, 16 Aug 2022 12:19:48 +0530
From: Syed Saba Kareem <ssabakar@....com>
To: Amadeusz Sławiński
<amadeuszx.slawinski@...ux.intel.com>,
Syed Saba kareem <Syed.SabaKareem@....com>,
broonie@...nel.org, alsa-devel@...a-project.org
Cc: Sunil-kumar.Dommati@....com,
open list <linux-kernel@...r.kernel.org>,
Basavaraj.Hiregoudar@....com, Takashi Iwai <tiwai@...e.com>,
Liam Girdwood <lgirdwood@...il.com>, mario.limonciello@....com,
Vijendar.Mukunda@....com
Subject: Re: [PATCH 04/13] ASoC: amd: add platform devices for acp6.2 pdm
driver and dmic driver
On 8/12/22 19:50, Amadeusz Sławiński wrote:
> [CAUTION: External Email]
>
> On 8/12/2022 2:07 PM, Syed Saba kareem wrote:
>> ACP6.2 IP has PDM decoder block.
>> Create a platform device for it, so that the PDM platform driver
>> can be bound to this device.
>> Pass PCI resources like MMIO to this platform device.
>>
>> Create a platform device for generic dmic codec driver.
>>
>> Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@....com>
>> Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
>> ---
>> sound/soc/amd/ps/acp62.h | 23 +++++++++++
>> sound/soc/amd/ps/pci-ps.c | 83 ++++++++++++++++++++++++++++++++++++++-
>> 2 files changed, 104 insertions(+), 2 deletions(-)
>>
>> diff --git a/sound/soc/amd/ps/acp62.h b/sound/soc/amd/ps/acp62.h
>> index 8e734f190b11..ab56e1f8c31b 100644
>> --- a/sound/soc/amd/ps/acp62.h
>> +++ b/sound/soc/amd/ps/acp62.h
>> @@ -9,6 +9,10 @@
>>
>> #define ACP_DEVICE_ID 0x15E2
>> #define ACP62_PHY_BASE_ADDRESS 0x1240000
>> +#define ACP6x_REG_START 0x1240000
>> +#define ACP6x_REG_END 0x1250200
>> +#define ACP6x_DEVS 2
>> +#define ACP6x_PDM_MODE 1
>>
>> #define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001
>> #define ACP_PGFSM_CNTL_POWER_ON_MASK 1
>> @@ -22,6 +26,25 @@
>> #define ACP_ERROR_MASK 0x20000000
>> #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
>>
>> +enum acp_config {
>> + ACP_CONFIG_0 = 0,
>> + ACP_CONFIG_1,
>> + ACP_CONFIG_2,
>> + ACP_CONFIG_3,
>> + ACP_CONFIG_4,
>> + ACP_CONFIG_5,
>> + ACP_CONFIG_6,
>> + ACP_CONFIG_7,
>> + ACP_CONFIG_8,
>> + ACP_CONFIG_9,
>> + ACP_CONFIG_10,
>> + ACP_CONFIG_11,
>> + ACP_CONFIG_12,
>> + ACP_CONFIG_13,
>> + ACP_CONFIG_14,
>> + ACP_CONFIG_15,
>> +};
>> +
>> static inline u32 acp62_readl(void __iomem *base_addr)
>> {
>> return readl(base_addr - ACP62_PHY_BASE_ADDRESS);
>> diff --git a/sound/soc/amd/ps/pci-ps.c b/sound/soc/amd/ps/pci-ps.c
>> index 2014f415af15..94201f75427a 100644
>> --- a/sound/soc/amd/ps/pci-ps.c
>> +++ b/sound/soc/amd/ps/pci-ps.c
>> @@ -9,11 +9,16 @@
>> #include <linux/module.h>
>> #include <linux/io.h>
>> #include <linux/delay.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/acpi.h>
>>
>> #include "acp62.h"
>>
>> struct acp62_dev_data {
>> void __iomem *acp62_base;
>> + struct resource *res;
>> + bool acp62_audio_mode;
>> + struct platform_device *pdev[ACP6x_DEVS];
>> };
>>
>> static int acp62_power_on(void __iomem *acp_base)
>> @@ -117,8 +122,11 @@ static int snd_acp62_probe(struct pci_dev *pci,
>> const struct pci_device_id *pci_id)
>> {
>> struct acp62_dev_data *adata;
>> + struct platform_device_info pdevinfo[ACP6x_DEVS];
>> + int index, ret;
>> + int val = 0x00;
>> + struct acpi_device *adev;
>> u32 addr;
>> - int ret;
>>
>> /* Pink Sardine device check */
>> switch (pci->revision) {
>> @@ -157,8 +165,75 @@ static int snd_acp62_probe(struct pci_dev *pci,
>> ret = acp62_init(adata->acp62_base);
>> if (ret)
>> goto release_regions;
>> + val = acp62_readl(adata->acp62_base + ACP_PIN_CONFIG);
>> + switch (val) {
>> + case ACP_CONFIG_0:
>> + case ACP_CONFIG_1:
>> + case ACP_CONFIG_2:
>> + case ACP_CONFIG_3:
>> + case ACP_CONFIG_9:
>> + case ACP_CONFIG_15:
>> + dev_info(&pci->dev, "Audio Mode %d\n", val);
>> + break;
>> + default:
>> +
>> + /* Checking DMIC hardware*/
>> + adev =
>> acpi_find_child_device(ACPI_COMPANION(&pci->dev), 0x02, 0);
>> +
>
> You can probably remove one level of indentation in following code if
> you do:
> if (!adev)
> break;
>
Okay Will use this logic.
>> + if (adev) {
>> + const union acpi_object *obj;
>> +
>> + if (!acpi_dev_get_property(adev,
>> "acp-audio-device-type",
>> + ACPI_TYPE_INTEGER, &obj) &&
>> + obj->integer.value == 2) {
>> + adata->res = devm_kzalloc(&pci->dev,
>> + sizeof(struct resource), GFP_KERNEL);
>> +
>> + if (!adata->res) {
>> + ret = -ENOMEM;
>> + goto de_init;
>> + }
>> +
>> + adata->res->name = "acp_iomem";
>> + adata->res->flags = IORESOURCE_MEM;
>> + adata->res->start = addr;
>> + adata->res->end = addr + (ACP6x_REG_END
>> - ACP6x_REG_START);
>> + adata->acp62_audio_mode = ACP6x_PDM_MODE;
>>
>> + memset(&pdevinfo, 0, sizeof(pdevinfo));
>> + pdevinfo[0].name = "acp_ps_pdm_dma";
>> + pdevinfo[0].id = 0;
>> + pdevinfo[0].parent = &pci->dev;
>> + pdevinfo[0].num_res = 1;
>> + pdevinfo[0].res = adata->res;
>> +
>> + pdevinfo[1].name = "dmic-codec";
>> + pdevinfo[1].id = 0;
>> + pdevinfo[1].parent = &pci->dev;
>> +
>> + for (index = 0; index < ACP6x_DEVS;
>> index++) {
>> + adata->pdev[index] =
>> + platform_device_register_full(&pdevinfo[index]);
>> +
>> + if (IS_ERR(adata->pdev[index])) {
>> + dev_err(&pci->dev,
>> + "cannot
>> register %s device\n",
>> + pdevinfo[index].name);
>> + ret =
>> PTR_ERR(adata->pdev[index]);
>> + goto unregister_devs;
>> + }
>> + }
>> + }
>> + }
>> + break;
>> + }
>> return 0;
>> +unregister_devs:
>> + for (--index; index >= 0; index--)
>> + platform_device_unregister(adata->pdev[index]);
>> +de_init:
>> + if (acp62_deinit(adata->acp62_base))
>> + dev_err(&pci->dev, "ACP de-init failed\n");
>> release_regions:
>> pci_release_regions(pci);
>> disable_pci:
>> @@ -170,9 +245,13 @@ static int snd_acp62_probe(struct pci_dev *pci,
>> static void snd_acp62_remove(struct pci_dev *pci)
>> {
>> struct acp62_dev_data *adata;
>> - int ret;
>> + int ret, index;
>>
>> adata = pci_get_drvdata(pci);
>> + if (adata->acp62_audio_mode == ACP6x_PDM_MODE) {
>> + for (index = 0; index < ACP6x_DEVS; index++)
>> + platform_device_unregister(adata->pdev[index]);
>> + }
>> ret = acp62_deinit(adata->acp62_base);
>> if (ret)
>> dev_err(&pci->dev, "ACP de-init failed\n");
>
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