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@xxxxxxx> >> --- >> 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@xxxxxxx"); >> MODULE_AUTHOR("Maruthi.Bayyavarapu@xxxxxxx"); >> MODULE_DESCRIPTION("AMD ACP3x PCI driver"); >> MODULE_LICENSE("GPL v2"); > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel