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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
/*
* Copyright 2025 NXP
*/
#include <linux/arm-smccc.h>
#include "imx-common.h"
#define IMX_SIP_SRC 0xC2000005
#define IMX_SIP_SRC_M_RESET_ADDR_SET 0x03
#define IMX95_CPU_VEC_FLAGS_BOOT BIT(29)
#define IMX_SIP_LMM 0xC200000F
#define IMX_SIP_LMM_BOOT 0x0
#define IMX_SIP_LMM_SHUTDOWN 0x1
#define IMX95_M7_LM_ID 0x1
static struct snd_soc_dai_driver imx95_dai[] = {
IMX_SOF_DAI_DRV_ENTRY_BIDIR("sai3", 1, 32),
};
static struct snd_sof_dsp_ops sof_imx9_ops;
static int imx95_ops_init(struct snd_sof_dev *sdev)
{
/* first copy from template */
memcpy(&sof_imx9_ops, &sof_imx_ops, sizeof(sof_imx_ops));
/* ... and finally set DAI driver */
sof_imx9_ops.drv = get_chip_info(sdev)->drv;
sof_imx9_ops.num_drv = get_chip_info(sdev)->num_drv;
return 0;
}
static int imx95_chip_probe(struct snd_sof_dev *sdev)
{
struct arm_smccc_res smc_res;
struct platform_device *pdev;
struct resource *res;
pdev = to_platform_device(sdev->dev);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
if (!res)
return dev_err_probe(sdev->dev, -ENODEV,
"failed to fetch SRAM region\n");
/* set core boot reset address */
arm_smccc_smc(IMX_SIP_SRC, IMX_SIP_SRC_M_RESET_ADDR_SET, res->start,
IMX95_CPU_VEC_FLAGS_BOOT, 0, 0, 0, 0, &smc_res);
return smc_res.a0;
}
static int imx95_core_kick(struct snd_sof_dev *sdev)
{
struct arm_smccc_res smc_res;
arm_smccc_smc(IMX_SIP_LMM, IMX_SIP_LMM_BOOT,
IMX95_M7_LM_ID, 0, 0, 0, 0, 0, &smc_res);
return smc_res.a0;
}
static int imx95_core_shutdown(struct snd_sof_dev *sdev)
{
struct arm_smccc_res smc_res;
arm_smccc_smc(IMX_SIP_LMM, IMX_SIP_LMM_SHUTDOWN,
IMX95_M7_LM_ID, 0, 0, 0, 0, 0, &smc_res);
return smc_res.a0;
}
static const struct imx_chip_ops imx95_chip_ops = {
.probe = imx95_chip_probe,
.core_kick = imx95_core_kick,
.core_shutdown = imx95_core_shutdown,
};
static struct imx_memory_info imx95_memory_regions[] = {
{ .name = "sram", .reserved = false },
{ }
};
static const struct imx_chip_info imx95_chip_info = {
.ipc_info = {
.boot_mbox_offset = 0x6001000,
.window_offset = 0x6000000,
},
.has_dma_reserved = true,
.memory = imx95_memory_regions,
.drv = imx95_dai,
.num_drv = ARRAY_SIZE(imx95_dai),
.ops = &imx95_chip_ops,
};
static struct snd_sof_of_mach sof_imx9_machs[] = {
{
.compatible = "fsl,imx95-19x19-evk",
.sof_tplg_filename = "sof-imx95-wm8962.tplg",
.drv_name = "asoc-audio-graph-card2",
},
{
}
};
IMX_SOF_DEV_DESC(imx95, sof_imx9_machs, &imx95_chip_info, &sof_imx9_ops, imx95_ops_init);
static const struct of_device_id sof_of_imx9_ids[] = {
{
.compatible = "fsl,imx95-cm7-sof",
.data = &IMX_SOF_DEV_DESC_NAME(imx95),
},
{
},
};
MODULE_DEVICE_TABLE(of, sof_of_imx9_ids);
static struct platform_driver snd_sof_of_imx9_driver = {
.probe = sof_of_probe,
.remove = sof_of_remove,
.driver = {
.name = "sof-audio-of-imx9",
.pm = pm_ptr(&sof_of_pm),
.of_match_table = sof_of_imx9_ids,
},
};
module_platform_driver(snd_sof_of_imx9_driver);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("SOF driver for imx9 platforms");
MODULE_AUTHOR("Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>");
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