[alsa-devel] [PATCH 2/7] ASoC: amd: Registering device endpoints using MFD framework
vishnu
vravulap at amd.com
Tue Oct 1 12:00:45 CEST 2019
Hi Jones,
I am very Thankful to your review comments.
Actually The driver is not totally based on MFD. It just uses
mfd_add_hotplug_devices() and mfd_remove_devices() for adding the
devices automatically.
Remaining code has nothing to do with MFD framework.
So I thought It would not break the coding style and moved ahead by
using the MFD API by adding its header file.
If it is any violation of coding standard then I can move it to
drivers/mfd.
This patch could be a show stopper for us.Please suggest us how can we
move ahead ASAP.
Thank you once again for your inputs.
Regards,
Vishnu
On 01/10/19 12:15 PM, Lee Jones wrote:
> On Tue, 01 Oct 2019, Ravulapati Vishnu vardhan rao wrote:
>
>> Removed platform based endpoint registering in ACP-PCI driver.
>> Now Registering PCM DMA and multiple I2S instances: SP and BT endpoint
>> devices automatically by using MFD framework.
>
> This is a hack.
>
> Why are you using the MFD framework outside of drivers/mfd?
>
> If this driver is an MFD, then please create an MFD driver.
>
> If it's not, please do not use the MFD API.
>
>> Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati at amd.com>
>> ---
>> sound/soc/amd/raven/acp3x.h | 8 +++
>> sound/soc/amd/raven/pci-acp3x.c | 123 ++++++++++++++++++++++++++--------------
>> 2 files changed, 90 insertions(+), 41 deletions(-)
>>
>> diff --git a/sound/soc/amd/raven/acp3x.h b/sound/soc/amd/raven/acp3x.h
>> index 4f2cadd..c122dc6 100644
>> --- a/sound/soc/amd/raven/acp3x.h
>> +++ b/sound/soc/amd/raven/acp3x.h
>> @@ -7,13 +7,21 @@
>>
>> #include "chip_offset_byte.h"
>>
>> +#define ACP3x_DEVS 3
>> #define ACP3x_PHY_BASE_ADDRESS 0x1240000
>> #define ACP3x_I2S_MODE 0
>> #define ACP3x_REG_START 0x1240000
>> #define ACP3x_REG_END 0x1250200
>> +#define ACP3x_I2STDM_REG_START 0x1242400
>> +#define ACP3x_I2STDM_REG_END 0x1242410
>> +#define ACP3x_BT_TDM_REG_START 0x1242800
>> +#define ACP3x_BT_TDM_REG_END 0x1242810
>> #define I2S_MODE 0x04
>> +#define I2S_RX_THRESHOLD 27
>> +#define I2S_TX_THRESHOLD 28
>> #define BT_TX_THRESHOLD 26
>> #define BT_RX_THRESHOLD 25
>> +#define ACP_ERR_INTR_MASK 29
>> #define ACP3x_POWER_ON 0x00
>> #define ACP3x_POWER_ON_IN_PROGRESS 0x01
>> #define ACP3x_POWER_OFF 0x02
>> diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
>> index 8f6bf00..d9f5bc0 100644
>> --- a/sound/soc/amd/raven/pci-acp3x.c
>> +++ b/sound/soc/amd/raven/pci-acp3x.c
>> @@ -9,13 +9,21 @@
>> #include <linux/io.h>
>> #include <linux/platform_device.h>
>> #include <linux/interrupt.h>
>> +#include <linux/mfd/core.h>
>>
>> #include "acp3x.h"
>>
>> +struct i2s_platform_data {
>> + unsigned int cap;
>> + int channel;
>> + u32 snd_rates;
>> +};
>> struct acp3x_dev_data {
>> + struct device *parent;
>> + struct mfd_cell *cell;
>> + struct resource *res;
>> void __iomem *acp3x_base;
>> bool acp3x_audio_mode;
>> - struct resource *res;
>> struct platform_device *pdev;
>> };
>>
>> @@ -23,9 +31,11 @@ static int snd_acp3x_probe(struct pci_dev *pci,
>> const struct pci_device_id *pci_id)
>> {
>> int ret;
>> - u32 addr, val;
>> + resource_size_t addr;
>> + int val, i, r;
>> struct acp3x_dev_data *adata;
>> - struct platform_device_info pdevinfo;
>> + struct device *dev;
>> + struct i2s_platform_data *i2s_pdata;
>> unsigned int irqflags;
>>
>> if (pci_enable_device(pci)) {
>> @@ -56,55 +66,87 @@ static int snd_acp3x_probe(struct pci_dev *pci,
>> }
>> pci_set_master(pci);
>> pci_set_drvdata(pci, adata);
>> -
>> + adata->parent = &pci->dev;
>> val = rv_readl(adata->acp3x_base + mmACP_I2S_PIN_CONFIG);
>> switch (val) {
>> case I2S_MODE:
>> adata->res = devm_kzalloc(&pci->dev,
>> - sizeof(struct resource) * 2,
>> - GFP_KERNEL);
>> - if (!adata->res) {
>> + sizeof(struct resource) * 4,
>> + GFP_KERNEL);
>> + adata->cell = devm_kzalloc(&pci->dev,
>> + sizeof(struct mfd_cell) * ACP3x_DEVS,
>> + GFP_KERNEL);
>> + if (!adata->cell) {
>> ret = -ENOMEM;
>> goto unmap_mmio;
>> }
>>
>> - adata->res[0].name = "acp3x_i2s_iomem";
>> - adata->res[0].flags = IORESOURCE_MEM;
>> - adata->res[0].start = addr;
>> - adata->res[0].end = addr + (ACP3x_REG_END - ACP3x_REG_START);
>> -
>> - adata->res[1].name = "acp3x_i2s_irq";
>> - adata->res[1].flags = IORESOURCE_IRQ;
>> - adata->res[1].start = pci->irq;
>> - adata->res[1].end = pci->irq;
>> -
>> - adata->acp3x_audio_mode = ACP3x_I2S_MODE;
>> -
>> - memset(&pdevinfo, 0, sizeof(pdevinfo));
>> - pdevinfo.name = "acp3x_rv_i2s";
>> - pdevinfo.id = 0;
>> - pdevinfo.parent = &pci->dev;
>> - pdevinfo.num_res = 2;
>> - pdevinfo.res = adata->res;
>> - pdevinfo.data = &irqflags;
>> - pdevinfo.size_data = sizeof(irqflags);
>> -
>> - adata->pdev = platform_device_register_full(&pdevinfo);
>> - if (IS_ERR(adata->pdev)) {
>> - dev_err(&pci->dev, "cannot register %s device\n",
>> - pdevinfo.name);
>> - ret = PTR_ERR(adata->pdev);
>> - goto unmap_mmio;
>> + i2s_pdata = devm_kzalloc(&pci->dev,
>> + sizeof(struct i2s_platform_data) * ACP3x_DEVS,
>> + GFP_KERNEL);
>> + if (i2s_pdata == NULL) {
>> + kfree(adata->res);
>> + kfree(adata->cell);
>> + return -ENOMEM;
>> }
>> + adata->res[0].name = "acp3x_i2s_iomem";
>> + adata->res[0].flags = IORESOURCE_MEM;
>> + adata->res[0].start = addr;
>> + adata->res[0].end = addr +
>> + (ACP3x_REG_END - ACP3x_REG_START);
>> + i2s_pdata[0].cap = 0;
>> + i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
>> +
>> + adata->res[1].name = "acp3x_i2s_sp_play_cap";
>> + adata->res[1].flags = IORESOURCE_MEM;
>> + adata->res[1].start = addr + ACP3x_I2STDM_REG_START;
>> + adata->res[1].end = addr + ACP3x_I2STDM_REG_END;
>> + i2s_pdata[1].cap = 0;
>> + i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
>> +
>> + adata->res[2].name = "acp3x_i2s_bt_play_cap";
>> + adata->res[2].flags = IORESOURCE_MEM;
>> + adata->res[2].start = addr + ACP3x_BT_TDM_REG_START;
>> + adata->res[2].end = addr + ACP3x_BT_TDM_REG_END;
>> + i2s_pdata[2].cap = 0;
>> + i2s_pdata[2].snd_rates = SNDRV_PCM_RATE_8000_96000;
>> +
>> + adata->res[3].name = "acp3x_i2s_irq";
>> + adata->res[3].flags = IORESOURCE_IRQ;
>> + adata->res[3].start = pci->irq;
>> + adata->res[3].end = adata->res[3].start;
>> +
>> + adata->acp3x_audio_mode = ACP3x_I2S_MODE;
>> +
>> + adata->cell[0].name = "acp3x_rv_i2s_dma";
>> + adata->cell[0].num_resources = 4;
>> + adata->cell[0].resources = &adata->res[0];
>> + adata->cell[0].platform_data = &irqflags;
>> + adata->cell[0].pdata_size = sizeof(irqflags);
>> +
>> + adata->cell[1].name = "acp3x_i2s_playcap";
>> + adata->cell[1].num_resources = 1;
>> + adata->cell[1].resources = &adata->res[1];
>> + adata->cell[1].platform_data = &i2s_pdata[0];
>> + adata->cell[1].pdata_size =
>> + sizeof(struct i2s_platform_data);
>> +
>> + adata->cell[2].name = "acp3x_i2s_playcap";
>> + adata->cell[2].num_resources = 1;
>> + adata->cell[2].resources = &adata->res[2];
>> + adata->cell[2].platform_data = &i2s_pdata[1];
>> + adata->cell[2].pdata_size =
>> + sizeof(struct i2s_platform_data);
>> + r = mfd_add_hotplug_devices(adata->parent,
>> + adata->cell, ACP3x_DEVS);
>> break;
>> - default:
>> - dev_err(&pci->dev, "Invalid ACP audio mode : %d\n", val);
>> - ret = -ENODEV;
>> - goto unmap_mmio;
>> }
>> return 0;
>>
>> unmap_mmio:
>> + mfd_remove_devices(adata->parent);
>> + kfree(adata->res);
>> + kfree(adata->cell);
>> iounmap(adata->acp3x_base);
>> release_regions:
>> pci_release_regions(pci);
>> @@ -117,10 +159,8 @@ static int snd_acp3x_probe(struct pci_dev *pci,
>> static void snd_acp3x_remove(struct pci_dev *pci)
>> {
>> struct acp3x_dev_data *adata = pci_get_drvdata(pci);
>> -
>> - platform_device_unregister(adata->pdev);
>> + mfd_remove_devices(adata->parent);
>> iounmap(adata->acp3x_base);
>> -
>> pci_release_regions(pci);
>> pci_disable_device(pci);
>> }
>> @@ -142,6 +182,7 @@ static struct pci_driver acp3x_driver = {
>>
>> module_pci_driver(acp3x_driver);
>>
>> +MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati at amd.com");
>> MODULE_AUTHOR("Maruthi.Bayyavarapu at amd.com");
>> MODULE_DESCRIPTION("AMD ACP3x PCI driver");
>> MODULE_LICENSE("GPL v2");
>
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