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Message-ID: <64ac2908-1091-16ec-b25a-5ac2abc9c9a9@linux.intel.com>
Date: Wed, 6 Nov 2019 10:24:52 -0600
From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To: Ravulapati Vishnu vardhan rao
<Vishnuvardhanrao.Ravulapati@....com>
Cc: "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..."
<alsa-devel@...a-project.org>,
Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu@....com>,
open list <linux-kernel@...r.kernel.org>,
Takashi Iwai <tiwai@...e.com>,
Liam Girdwood <lgirdwood@...il.com>, Akshu.Agrawal@....com,
Sanju R Mehta <sanju.mehta@....com>,
Mark Brown <broonie@...nel.org>, djkurtz@...gle.com,
Vijendar Mukunda <Vijendar.Mukunda@....com>,
Alex Deucher <alexander.deucher@....com>,
Colin Ian King <colin.king@...onical.com>,
Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [alsa-devel] [RESEND PATCH v2 1/7] ASoC: amd: Create multiple I2S
platform device endpoints
On 11/7/19 8:35 AM, Ravulapati Vishnu vardhan rao wrote:
> Creates Platform Device endpoints for multiple
> I2S instances: SP and BT endpoints device.
> Pass PCI resources like MMIO, irq to the platform devices.
>
> Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@....com>
> ---
> sound/soc/amd/raven/acp3x.h | 5 +++
> sound/soc/amd/raven/pci-acp3x.c | 82 +++++++++++++++++++++++++++--------------
> 2 files changed, 60 insertions(+), 27 deletions(-)
>
> diff --git a/sound/soc/amd/raven/acp3x.h b/sound/soc/amd/raven/acp3x.h
> index 4f2cadd..2f15fe1 100644
> --- a/sound/soc/amd/raven/acp3x.h
> +++ b/sound/soc/amd/raven/acp3x.h
> @@ -7,10 +7,15 @@
>
> #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 BT_TX_THRESHOLD 26
> #define BT_RX_THRESHOLD 25
> diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
> index facec24..ec3ef625 100644
> --- a/sound/soc/amd/raven/pci-acp3x.c
> +++ b/sound/soc/amd/raven/pci-acp3x.c
> @@ -16,16 +16,16 @@ struct acp3x_dev_data {
> void __iomem *acp3x_base;
> bool acp3x_audio_mode;
> struct resource *res;
> - struct platform_device *pdev;
> + struct platform_device *pdev[ACP3x_DEVS];
> };
>
> static int snd_acp3x_probe(struct pci_dev *pci,
> const struct pci_device_id *pci_id)
> {
> int ret;
> - u32 addr, val;
> + u32 addr, val, i;
> struct acp3x_dev_data *adata;
> - struct platform_device_info pdevinfo;
> + struct platform_device_info pdevinfo[ACP3x_DEVS];
> unsigned int irqflags;
>
> if (pci_enable_device(pci)) {
> @@ -68,7 +68,7 @@ static int snd_acp3x_probe(struct pci_dev *pci,
> switch (val) {
> case I2S_MODE:
> adata->res = devm_kzalloc(&pci->dev,
> - sizeof(struct resource) * 2,
> + sizeof(struct resource) * 4,
> GFP_KERNEL);
> if (!adata->res) {
> ret = -ENOMEM;
> @@ -80,39 +80,62 @@ static int snd_acp3x_probe(struct pci_dev *pci,
> 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->res[1].name = "acp3x_i2s_sp";
> + adata->res[1].flags = IORESOURCE_MEM;
> + adata->res[1].start = addr + ACP3x_I2STDM_REG_START;
> + adata->res[1].end = addr + ACP3x_I2STDM_REG_END;
> +
> + adata->res[2].name = "acp3x_i2s_bt";
> + 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;
> +
> + 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;
>
> 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;
> + pdevinfo[0].name = "acp3x_rv_i2s_dma";
> + pdevinfo[0].id = 0;
> + pdevinfo[0].parent = &pci->dev;
> + pdevinfo[0].num_res = 4;
> + pdevinfo[0].res = &adata->res[0];
> + pdevinfo[0].data = &irqflags;
> + pdevinfo[0].size_data = sizeof(irqflags);
> +
> + pdevinfo[1].name = "acp3x_i2s_playcap";
> + pdevinfo[1].id = 0;
> + pdevinfo[1].parent = &pci->dev;
> + pdevinfo[1].num_res = 1;
> + pdevinfo[1].res = &adata->res[1];
> +
> + pdevinfo[2].name = "acp3x_i2s_playcap";
> + pdevinfo[2].id = 1;
> + pdevinfo[2].parent = &pci->dev;
> + pdevinfo[2].num_res = 1;
> + pdevinfo[2].res = &adata->res[2];
> + for (i = 0; i < ACP3x_DEVS ; i++) {
> + adata->pdev[i] =
> + platform_device_register_full(&pdevinfo[i]);
> + if (adata->pdev[i] == NULL) {
should be IS_ERR(adata->pdev[i])
> + dev_err(&pci->dev, "cannot register %s device\n",
> + pdevinfo[i].name);
> + ret = -ENODEV;
> + goto unmap_mmio;
> + }
> }
> break;
> - default:
> - dev_err(&pci->dev, "Invalid ACP audio mode : %d\n", val);
> - ret = -ENODEV;
> - goto unmap_mmio;
> }
> return 0;
>
> unmap_mmio:
> pci_disable_msi(pci);
> + for (i = 0 ; i < ACP3x_DEVS ; i++)
> + platform_device_unregister(adata->pdev[i]);
> + kfree(adata->res);
You should revisit the labels, in the default case you haven't allocated
any memory
> iounmap(adata->acp3x_base);
> release_regions:
> pci_release_regions(pci);
> @@ -124,9 +147,13 @@ static int snd_acp3x_probe(struct pci_dev *pci,
>
> static void snd_acp3x_remove(struct pci_dev *pci)
> {
> + int i;
> struct acp3x_dev_data *adata = pci_get_drvdata(pci);
>
> - platform_device_unregister(adata->pdev);
> + if (adata->acp3x_audio_mode == ACP3x_I2S_MODE) {
> + for (i = 0 ; i < ACP3x_DEVS ; i++)
> + platform_device_unregister(adata->pdev[i]);
> + }
> iounmap(adata->acp3x_base);
>
> pci_disable_msi(pci);
> @@ -151,6 +178,7 @@ static struct pci_driver acp3x_driver = {
>
> module_pci_driver(acp3x_driver);
>
> +MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati@....com");
> MODULE_AUTHOR("Maruthi.Bayyavarapu@....com");
> MODULE_DESCRIPTION("AMD ACP3x PCI driver");
> MODULE_LICENSE("GPL v2");
>
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