--- /dev/null
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2023 Advanced Micro Devices, Inc.
+//
+// Authors: Syed Saba kareem <syed.sabakareem@amd.com>
+/*
+ * Hardware interface for ACP6.3 block
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <linux/pci.h>
+#include "amd.h"
+
+#define DRV_NAME "acp_asoc_acp63"
+
+#define CLK_PLL_PWR_REQ_N0 0X0006C2C0
+#define CLK_SPLL_FIELD_2_N0 0X0006C114
+#define CLK_PLL_REQ_N0 0X0006C0DC
+#define CLK_DFSBYPASS_CONTR 0X0006C2C8
+#define CLK_DFS_CNTL_N0 0X0006C1A4
+
+#define PLL_AUTO_STOP_REQ BIT(4)
+#define PLL_AUTO_START_REQ BIT(0)
+#define PLL_FRANCE_EN BIT(4)
+#define EXIT_DPF_BYPASS_0 BIT(16)
+#define EXIT_DPF_BYPASS_1 BIT(17)
+#define CLK0_DIVIDER 0X30
+
+union clk_pll_req_no {
+ struct {
+ u32 fb_mult_int : 9;
+ u32 reserved : 3;
+ u32 pll_spine_div : 4;
+ u32 gb_mult_frac : 16;
+ } bitfields, bits;
+ u32 clk_pll_req_no_reg;
+};
+
+static struct acp_resource rsrc = {
+ .offset = 0,
+ .no_of_ctrls = 2,
+ .irqp_used = 1,
+ .soc_mclk = true,
+ .irq_reg_offset = 0x1a00,
+ .i2s_pin_cfg_offset = 0x1440,
+ .i2s_mode = 0x0a,
+ .scratch_reg_offset = 0x12800,
+ .sram_pte_offset = 0x03802800,
+};
+
+static struct snd_soc_acpi_mach snd_soc_acpi_amd_acp63_acp_machines[] = {
+ {
+ .id = "AMDI0052",
+ .drv_name = "acp63-acp",
+ },
+ {},
+};
+
+static struct snd_soc_dai_driver acp63_dai[] = {
+{
+ .name = "acp-i2s-sp",
+ .id = I2S_SP_INSTANCE,
+ .playback = {
+ .stream_name = "I2S SP Playback",
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ },
+ .capture = {
+ .stream_name = "I2S SP Capture",
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ },
+ .ops = &asoc_acp_cpu_dai_ops,
+},
+{
+ .name = "acp-i2s-bt",
+ .id = I2S_BT_INSTANCE,
+ .playback = {
+ .stream_name = "I2S BT Playback",
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ },
+ .capture = {
+ .stream_name = "I2S BT Capture",
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ },
+ .ops = &asoc_acp_cpu_dai_ops,
+},
+{
+ .name = "acp-i2s-hs",
+ .id = I2S_HS_INSTANCE,
+ .playback = {
+ .stream_name = "I2S HS Playback",
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ },
+ .capture = {
+ .stream_name = "I2S HS Capture",
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ },
+ .ops = &asoc_acp_cpu_dai_ops,
+},
+{
+ .name = "acp-pdm-dmic",
+ .id = DMIC_INSTANCE,
+ .capture = {
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ },
+ .ops = &acp_dmic_dai_ops,
+},
+};
+
+static int acp63_i2s_master_clock_generate(struct acp_dev_data *adata)
+{
+ u32 data;
+ union clk_pll_req_no clk_pll;
+ struct pci_dev *smn_dev;
+
+ smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x14E8, NULL);
+ if (!smn_dev)
+ return -ENODEV;
+
+ /* Clk5 pll register values to get mclk as 196.6MHz*/
+ clk_pll.bits.fb_mult_int = 0x31;
+ clk_pll.bits.pll_spine_div = 0;
+ clk_pll.bits.gb_mult_frac = 0x26E9;
+
+ data = smn_read(smn_dev, CLK_PLL_PWR_REQ_N0);
+ smn_write(smn_dev, CLK_PLL_PWR_REQ_N0, data | PLL_AUTO_STOP_REQ);
+
+ data = smn_read(smn_dev, CLK_SPLL_FIELD_2_N0);
+ if (data & PLL_FRANCE_EN)
+ smn_write(smn_dev, CLK_SPLL_FIELD_2_N0, data | PLL_FRANCE_EN);
+
+ smn_write(smn_dev, CLK_PLL_REQ_N0, clk_pll.clk_pll_req_no_reg);
+
+ data = smn_read(smn_dev, CLK_PLL_PWR_REQ_N0);
+ smn_write(smn_dev, CLK_PLL_PWR_REQ_N0, data | PLL_AUTO_START_REQ);
+
+ data = smn_read(smn_dev, CLK_DFSBYPASS_CONTR);
+ smn_write(smn_dev, CLK_DFSBYPASS_CONTR, data | EXIT_DPF_BYPASS_0);
+ smn_write(smn_dev, CLK_DFSBYPASS_CONTR, data | EXIT_DPF_BYPASS_1);
+
+ smn_write(smn_dev, CLK_DFS_CNTL_N0, CLK0_DIVIDER);
+ return 0;
+}
+
+static int acp63_audio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct acp_chip_info *chip;
+ struct acp_dev_data *adata;
+ struct resource *res;
+ int ret;
+
+ chip = dev_get_platdata(&pdev->dev);
+ if (!chip || !chip->base) {
+ dev_err(&pdev->dev, "ACP chip data is NULL\n");
+ return -ENODEV;
+ }
+
+ if (chip->acp_rev != ACP63_DEV) {
+ dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
+ return -ENODEV;
+ }
+
+ adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);
+ if (!adata)
+ return -ENOMEM;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "acp_mem");
+ if (!res) {
+ dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
+ return -ENODEV;
+ }
+
+ adata->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ if (!adata->acp_base)
+ return -ENOMEM;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "acp_dai_irq");
+ if (!res) {
+ dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");
+ return -ENODEV;
+ }
+
+ adata->i2s_irq = res->start;
+ adata->dev = dev;
+ adata->dai_driver = acp63_dai;
+ adata->num_dai = ARRAY_SIZE(acp63_dai);
+ adata->rsrc = &rsrc;
+ adata->machines = snd_soc_acpi_amd_acp63_acp_machines;
+ acp_machine_select(adata);
+ dev_set_drvdata(dev, adata);
+ ret = acp63_i2s_master_clock_generate(adata);
+ if (ret)
+ return ret;
+
+ acp_enable_interrupts(adata);
+ acp_platform_register(dev);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ return 0;
+}
+
+static void acp63_audio_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct acp_dev_data *adata = dev_get_drvdata(dev);
+
+ acp_disable_interrupts(adata);
+ acp_platform_unregister(dev);
+ pm_runtime_disable(&pdev->dev);
+}
+
+static int __maybe_unused acp63_pcm_resume(struct device *dev)
+{
+ struct acp_dev_data *adata = dev_get_drvdata(dev);
+ struct acp_stream *stream;
+ struct snd_pcm_substream *substream;
+ snd_pcm_uframes_t buf_in_frames;
+ u64 buf_size;
+
+ acp63_i2s_master_clock_generate(adata);
+ spin_lock(&adata->acp_lock);
+ list_for_each_entry(stream, &adata->stream_list, list) {
+ if (stream) {
+ substream = stream->substream;
+ if (substream && substream->runtime) {
+ buf_in_frames = (substream->runtime->buffer_size);
+ buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
+ config_pte_for_stream(adata, stream);
+ config_acp_dma(adata, stream, buf_size);
+ if (stream->dai_id)
+ restore_acp_i2s_params(substream, adata, stream);
+ else
+ restore_acp_pdm_params(substream, adata);
+ }
+ }
+ }
+ spin_unlock(&adata->acp_lock);
+ return 0;
+}
+
+static const struct dev_pm_ops acp63_dma_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, acp63_pcm_resume)
+};
+
+static struct platform_driver acp63_driver = {
+ .probe = acp63_audio_probe,
+ .remove_new = acp63_audio_remove,
+ .driver = {
+ .name = "acp_asoc_acp63",
+ .pm = &acp63_dma_pm_ops,
+ },
+};
+
+module_platform_driver(acp63_driver);
+
+MODULE_DESCRIPTION("AMD ACP acp63 Driver");
+MODULE_IMPORT_NS(SND_SOC_ACP_COMMON);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
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