[alsa-devel] [PATCH 9/9] ASoC: Intel: Add ACPI driver for SST
Vinod Koul
vinod.koul at intel.com
Thu Oct 30 11:51:52 CET 2014
From: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
This add support for ACPI platform and adds the BYT device ID to the
supported machines
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
Signed-off-by: Vinod Koul <vinod.koul at intel.com>
---
sound/soc/intel/Kconfig | 3 +
sound/soc/intel/sst/Makefile | 4 +
sound/soc/intel/sst/sst.c | 19 ++
sound/soc/intel/sst/sst.h | 1 +
sound/soc/intel/sst/sst_acpi.c | 387 ++++++++++++++++++++++++++++++++++++++++
sound/soc/intel/sst/sst_pvt.c | 2 +
6 files changed, 416 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/intel/sst/sst_acpi.c
diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index cbc987e..df489ea 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -20,6 +20,9 @@ config SND_SST_IPC
config SND_SST_IPC_PCI
bool
+config SND_SST_IPC_ACPI
+ bool
+
config SND_SOC_INTEL_SST
tristate "ASoC support for Intel(R) Smart Sound Technology"
select SND_SOC_INTEL_SST_ACPI if ACPI
diff --git a/sound/soc/intel/sst/Makefile b/sound/soc/intel/sst/Makefile
index b3fbccd..79accb5 100644
--- a/sound/soc/intel/sst/Makefile
+++ b/sound/soc/intel/sst/Makefile
@@ -4,4 +4,8 @@ ifneq ($(CONFIG_SND_SST_IPC_PCI),)
snd-intel-sst-objs += sst_pci.o
endif
+ifneq ($(CONFIG_SND_SST_IPC_ACPI),)
+snd-intel-sst-objs += sst_acpi.o
+endif
+
obj-$(CONFIG_SND_SST_IPC) += snd-intel-sst.o
diff --git a/sound/soc/intel/sst/sst.c b/sound/soc/intel/sst/sst.c
index 82346a0..5434c23 100644
--- a/sound/soc/intel/sst/sst.c
+++ b/sound/soc/intel/sst/sst.c
@@ -176,6 +176,7 @@ int sst_driver_ops(struct intel_sst_drv *sst)
switch (sst->dev_id) {
case SST_MRFLD_PCI_ID:
+ case SST_BYT_ACPI_ID:
sst->tstamp = SST_TIME_STAMP_MRFLD;
sst->ops = &mrfld_ops;
return 0;
@@ -306,7 +307,11 @@ do_free_mem:
void sst_context_cleanup(struct intel_sst_drv *ctx)
{
pm_runtime_get_noresume(ctx->dev);
+#if IS_ENABLED(CONFIG_ACPI)
+ pm_runtime_disable(ctx->dev);
+#else
pm_runtime_forbid(ctx->dev);
+#endif
sst_unregister(ctx->dev);
sst_set_fw_state_locked(ctx, SST_SHUTDOWN);
flush_scheduled_work();
@@ -325,8 +330,18 @@ void sst_configure_runtime_pm(struct intel_sst_drv *ctx)
{
pm_runtime_set_autosuspend_delay(ctx->dev, SST_SUSPEND_DELAY);
pm_runtime_use_autosuspend(ctx->dev);
+#if IS_ENABLED(CONFIG_ACPI)
+ /*
+ * For acpi devices, the actual physical device state is
+ * initially active. So change the state to active before
+ * enabling the pm
+ */
+ pm_runtime_set_active(ctx->dev);
+ pm_runtime_enable(ctx->dev);
+#else
pm_runtime_allow(ctx->dev);
pm_runtime_put_noidle(ctx->dev);
+#endif
}
inline void sst_save_shim64(struct intel_sst_drv *ctx,
@@ -393,6 +408,10 @@ static int intel_sst_runtime_suspend(struct device *dev)
synchronize_irq(ctx->irq_num);
flush_workqueue(ctx->post_msg_wq);
+ /* save the shim registers because PMC doesn't save state */
+ if (ctx->dev_id == SST_BYT_ACPI_ID)
+ sst_save_shim64(ctx, ctx->shim, ctx->shim_regs64);
+
return ret;
}
diff --git a/sound/soc/intel/sst/sst.h b/sound/soc/intel/sst/sst.h
index 3ee555e..80630e5 100644
--- a/sound/soc/intel/sst/sst.h
+++ b/sound/soc/intel/sst/sst.h
@@ -29,6 +29,7 @@
/* driver names */
#define SST_DRV_NAME "intel_sst_driver"
#define SST_MRFLD_PCI_ID 0x119A
+#define SST_BYT_ACPI_ID 0x80860F28
#define SST_SUSPEND_DELAY 2000
#define FW_CONTEXT_MEM (64*1024)
diff --git a/sound/soc/intel/sst/sst_acpi.c b/sound/soc/intel/sst/sst_acpi.c
new file mode 100644
index 0000000..0d87e05
--- /dev/null
+++ b/sound/soc/intel/sst/sst_acpi.c
@@ -0,0 +1,387 @@
+/*
+ * sst_acpi.c - SST (LPE) driver init file for ACPI enumeration.
+ *
+ * Copyright (c) 2013, Intel Corporation.
+ *
+ * Authors: Ramesh Babu K V <Ramesh.Babu at intel.com>
+ * Authors: Omair Mohammed Abdullah <omair.m.abdullah at intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/miscdevice.h>
+#include <linux/platform_device.h>
+#include <linux/firmware.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_qos.h>
+#include <linux/acpi.h>
+#include <asm/platform_sst_audio.h>
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/compress_driver.h>
+#include <acpi/acbuffer.h>
+#include <acpi/platform/acenv.h>
+#include <acpi/platform/aclinux.h>
+#include <acpi/actypes.h>
+#include <acpi/acpi_bus.h>
+#include "../sst-mfld-platform.h"
+#include "../sst-dsp.h"
+#include "sst.h"
+
+struct sst_machines {
+ char codec_id[32];
+ char board[32];
+ char machine[32];
+ void (*machine_quirk)(void);
+ char firmware[32];
+ struct sst_platform_info *pdata;
+
+};
+
+/* LPE viewpoint addresses */
+#define SST_BYT_IRAM_PHY_START 0xff2c0000
+#define SST_BYT_IRAM_PHY_END 0xff2d4000
+#define SST_BYT_DRAM_PHY_START 0xff300000
+#define SST_BYT_DRAM_PHY_END 0xff320000
+#define SST_BYT_IMR_VIRT_START 0xc0000000 /* virtual addr in LPE */
+#define SST_BYT_IMR_VIRT_END 0xc01fffff
+#define SST_BYT_SHIM_PHY_ADDR 0xff340000
+#define SST_BYT_MBOX_PHY_ADDR 0xff344000
+#define SST_BYT_DMA0_PHY_ADDR 0xff298000
+#define SST_BYT_DMA1_PHY_ADDR 0xff29c000
+#define SST_BYT_SSP0_PHY_ADDR 0xff2a0000
+#define SST_BYT_SSP2_PHY_ADDR 0xff2a2000
+
+#define BYT_FW_MOD_TABLE_OFFSET 0x80000
+#define BYT_FW_MOD_TABLE_SIZE 0x100
+#define BYT_FW_MOD_OFFSET (BYT_FW_MOD_TABLE_OFFSET + BYT_FW_MOD_TABLE_SIZE)
+
+static const struct sst_info byt_fwparse_info = {
+ .use_elf = false,
+ .max_streams = 25,
+ .iram_start = SST_BYT_IRAM_PHY_START,
+ .iram_end = SST_BYT_IRAM_PHY_END,
+ .iram_use = true,
+ .dram_start = SST_BYT_DRAM_PHY_START,
+ .dram_end = SST_BYT_DRAM_PHY_END,
+ .dram_use = true,
+ .imr_start = SST_BYT_IMR_VIRT_START,
+ .imr_end = SST_BYT_IMR_VIRT_END,
+ .imr_use = true,
+ .mailbox_start = SST_BYT_MBOX_PHY_ADDR,
+ .num_probes = 0,
+ .lpe_viewpt_rqd = true,
+};
+
+static const struct sst_ipc_info byt_ipc_info = {
+ .ipc_offset = 0,
+ .mbox_recv_off = 0x400,
+};
+
+static const struct sst_lib_dnld_info byt_lib_dnld_info = {
+ .mod_base = SST_BYT_IMR_VIRT_START,
+ .mod_end = SST_BYT_IMR_VIRT_END,
+ .mod_table_offset = BYT_FW_MOD_TABLE_OFFSET,
+ .mod_table_size = BYT_FW_MOD_TABLE_SIZE,
+ .mod_ddr_dnld = false,
+};
+
+static const struct sst_res_info byt_rvp_res_info = {
+ .shim_offset = 0x140000,
+ .shim_size = 0x000100,
+ .shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
+ .ssp0_offset = 0xa0000,
+ .ssp0_size = 0x1000,
+ .dma0_offset = 0x98000,
+ .dma0_size = 0x4000,
+ .dma1_offset = 0x9c000,
+ .dma1_size = 0x4000,
+ .iram_offset = 0x0c0000,
+ .iram_size = 0x14000,
+ .dram_offset = 0x100000,
+ .dram_size = 0x28000,
+ .mbox_offset = 0x144000,
+ .mbox_size = 0x1000,
+ .acpi_lpe_res_index = 0,
+ .acpi_ddr_index = 2,
+ .acpi_ipc_irq_index = 5,
+};
+
+struct sst_platform_info byt_rvp_platform_data = {
+ .probe_data = &byt_fwparse_info,
+ .ipc_info = &byt_ipc_info,
+ .lib_info = &byt_lib_dnld_info,
+ .res_info = &byt_rvp_res_info,
+ .platform = "sst-mfld-platform",
+};
+
+#if IS_ENABLED(CONFIG_ACPI)
+static int sst_platform_get_resources(struct intel_sst_drv *ctx)
+{
+ struct resource *rsrc;
+ struct platform_device *pdev = to_platform_device(ctx->dev);
+
+ /* All ACPI resource request here */
+ /* Get Shim addr */
+ rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
+ ctx->pdata->res_info->acpi_lpe_res_index);
+ if (!rsrc) {
+ dev_err(ctx->dev, "Invalid SHIM base from IFWI");
+ return -EIO;
+ }
+ dev_info(ctx->dev, "LPE base: %#x size:%#x", (unsigned int) rsrc->start,
+ (unsigned int)resource_size(rsrc));
+
+ ctx->iram_base = rsrc->start + ctx->pdata->res_info->iram_offset;
+ ctx->iram_end = ctx->iram_base + ctx->pdata->res_info->iram_size - 1;
+ dev_info(ctx->dev, "IRAM base: %#x", ctx->iram_base);
+ ctx->iram = devm_ioremap_nocache(ctx->dev, ctx->iram_base,
+ ctx->pdata->res_info->iram_size);
+ if (!ctx->iram) {
+ dev_err(ctx->dev, "unable to map IRAM");
+ return -EIO;
+ }
+
+ ctx->dram_base = rsrc->start + ctx->pdata->res_info->dram_offset;
+ ctx->dram_end = ctx->dram_base + ctx->pdata->res_info->dram_size - 1;
+ dev_info(ctx->dev, "DRAM base: %#x", ctx->dram_base);
+ ctx->dram = devm_ioremap_nocache(ctx->dev, ctx->dram_base,
+ ctx->pdata->res_info->dram_size);
+ if (!ctx->dram) {
+ dev_err(ctx->dev, "unable to map DRAM");
+ return -EIO;
+ }
+
+ ctx->shim_phy_add = rsrc->start + ctx->pdata->res_info->shim_offset;
+ dev_info(ctx->dev, "SHIM base: %#x", ctx->shim_phy_add);
+ ctx->shim = devm_ioremap_nocache(ctx->dev, ctx->shim_phy_add,
+ ctx->pdata->res_info->shim_size);
+ if (!ctx->shim) {
+ dev_err(ctx->dev, "unable to map SHIM");
+ return -EIO;
+ }
+
+ /* reassign physical address to LPE viewpoint address */
+ ctx->shim_phy_add = ctx->pdata->res_info->shim_phy_addr;
+
+ /* Get mailbox addr */
+ ctx->mailbox_add = rsrc->start + ctx->pdata->res_info->mbox_offset;
+ dev_info(ctx->dev, "Mailbox base: %#x", ctx->mailbox_add);
+ ctx->mailbox = devm_ioremap_nocache(ctx->dev, ctx->mailbox_add,
+ ctx->pdata->res_info->mbox_size);
+ if (!ctx->mailbox) {
+ dev_err(ctx->dev, "unable to map mailbox");
+ return -EIO;
+ }
+
+ /* reassign physical address to LPE viewpoint address */
+ ctx->mailbox_add = ctx->info.mailbox_start;
+
+ rsrc = platform_get_resource(pdev, IORESOURCE_MEM,
+ ctx->pdata->res_info->acpi_ddr_index);
+ if (!rsrc) {
+ dev_err(ctx->dev, "Invalid DDR base from IFWI");
+ return -EIO;
+ }
+ ctx->ddr_base = rsrc->start;
+ ctx->ddr_end = rsrc->end;
+ dev_info(ctx->dev, "DDR base: %#x", ctx->ddr_base);
+ ctx->ddr = devm_ioremap_nocache(ctx->dev, ctx->ddr_base,
+ resource_size(rsrc));
+ if (!ctx->ddr) {
+ dev_err(ctx->dev, "unable to map DDR");
+ return -EIO;
+ }
+
+ /* Find the IRQ */
+ ctx->irq_num = platform_get_irq(pdev,
+ ctx->pdata->res_info->acpi_ipc_irq_index);
+ return 0;
+}
+
+static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level,
+ void *context, void **ret)
+{
+ *(bool *)context = true;
+ return AE_OK;
+}
+
+static struct sst_machines *sst_acpi_find_machine(
+ struct sst_machines *machines)
+{
+ struct sst_machines *mach;
+ bool found = false;
+
+ for (mach = machines; mach->codec_id; mach++)
+ if (ACPI_SUCCESS(acpi_get_devices(mach->codec_id,
+ sst_acpi_mach_match,
+ &found, NULL)) && found)
+ return mach;
+
+ return NULL;
+}
+
+int sst_acpi_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ int ret = 0;
+ struct intel_sst_drv *ctx;
+ const struct acpi_device_id *id;
+ struct sst_machines *mach;
+ struct platform_device *mdev;
+ struct platform_device *plat_dev;
+ unsigned int dev_id;
+
+ id = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!id)
+ return -ENODEV;
+ dev_dbg(dev, "for %s", id->id);
+
+ mach = (struct sst_machines *)id->driver_data;
+ mach = sst_acpi_find_machine(mach);
+ if (mach == NULL) {
+ dev_err(dev, "No matching machine driver found\n");
+ return -ENODEV;
+ }
+
+ ret = kstrtouint(id->id, 16, &dev_id);
+ if (ret < 0) {
+ dev_err(dev, "Unique device id conversion error: %d\n", ret);
+ return ret;
+ }
+
+ dev_dbg(dev, "ACPI device id: %x\n", dev_id);
+
+ plat_dev = platform_device_register_data(dev, mach->pdata->platform, -1, NULL, 0);
+ if (plat_dev == NULL) {
+ dev_err(dev, "Failed to create machine device: %s\n", mach->pdata->platform);
+ return -ENODEV;
+ }
+
+ /* Create platform device for sst machine driver */
+ mdev = platform_device_register_data(dev, mach->machine, -1, NULL, 0);
+ if (mdev == NULL) {
+ dev_err(dev, "Failed to create machine device: %s\n", mach->machine);
+ return -ENODEV;
+ }
+
+ ret = sst_alloc_drv_context(&ctx, dev, dev_id);
+ if (ret < 0)
+ return ret;
+
+ /* Fill sst platform data */
+ ctx->pdata = mach->pdata;
+ strcpy(ctx->firmware_name, mach->firmware);
+
+ ret = sst_platform_get_resources(ctx);
+ if (ret)
+ return ret;
+
+ ret = sst_context_init(ctx);
+ if (ret < 0)
+ goto free_sst;
+
+ /* need to save shim registers in BYT */
+ ctx->shim_regs64 = devm_kzalloc(ctx->dev, sizeof(*ctx->shim_regs64),
+ GFP_KERNEL);
+ if (!ctx->shim_regs64)
+ return -ENOMEM;
+
+ sst_set_fw_state_locked(ctx, SST_RESET);
+
+ ret = request_firmware_nowait(THIS_MODULE, true, mach->firmware,
+ dev, GFP_KERNEL, ctx, sst_firmware_load_cb);
+ if (ret) {
+ dev_err(ctx->dev, "Firmware download failed:%d\n", ret);
+ goto do_sst_cleanup;
+ }
+
+ sst_configure_runtime_pm(ctx);
+ sst_register(dev);
+ sst_save_shim64(ctx, ctx->shim, ctx->shim_regs64);
+ platform_set_drvdata(pdev, ctx);
+ return ret;
+
+do_sst_cleanup:
+ destroy_workqueue(ctx->post_msg_wq);
+free_sst:
+ platform_set_drvdata(pdev, NULL);
+ dev_err(ctx->dev, "failed with %d\n", ret);
+ return ret;
+}
+
+/**
+* intel_sst_remove - remove function
+*
+* @pdev: platform device structure
+*
+* This function is called by OS when a device is unloaded
+* This frees the interrupt etc
+*/
+int sst_acpi_remove(struct platform_device *pdev)
+{
+ struct intel_sst_drv *ctx;
+
+ ctx = platform_get_drvdata(pdev);
+ sst_context_cleanup(ctx);
+ platform_set_drvdata(pdev, NULL);
+ return 0;
+}
+
+#else
+int sst_acpi_probe(struct platform_device *pdev)
+{
+ return -EINVAL;
+}
+
+int sst_acpi_remove(struct platform_device *pdev)
+{
+ return -EINVAL;
+}
+#endif
+
+static struct sst_machines sst_acpi_bytcr[] = {
+ {"10EC5640", "T100", "bytt100_rt5640", NULL, "fw_sst_0f28.bin",
+ &byt_rvp_platform_data },
+ {},
+};
+
+static const struct acpi_device_id sst_acpi_ids[] = {
+ { "80860F28", (unsigned long)&sst_acpi_bytcr},
+ { },
+};
+
+static struct platform_driver sst_acpi_driver = {
+ .driver = {
+ .name = "intel_sst_acpi",
+ .owner = THIS_MODULE,
+ .acpi_match_table = ACPI_PTR(sst_acpi_ids),
+ .pm = &intel_sst_pm,
+ },
+ .probe = sst_acpi_probe,
+ .remove = sst_acpi_remove,
+};
+
+module_platform_driver(sst_acpi_driver);
+
+MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine ACPI Driver");
+MODULE_AUTHOR("Ramesh Babu K V");
+MODULE_AUTHOR("Omair Mohammed Abdullah");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("sst");
diff --git a/sound/soc/intel/sst/sst_pvt.c b/sound/soc/intel/sst/sst_pvt.c
index 1c2e081..e8efdd0 100644
--- a/sound/soc/intel/sst/sst_pvt.c
+++ b/sound/soc/intel/sst/sst_pvt.c
@@ -117,6 +117,7 @@ unsigned long long read_shim_data(struct intel_sst_drv *sst, int addr)
switch (sst->dev_id) {
case SST_MRFLD_PCI_ID:
+ case SST_BYT_ACPI_ID:
val = sst_shim_read64(sst->shim, addr);
break;
}
@@ -128,6 +129,7 @@ void write_shim_data(struct intel_sst_drv *sst, int addr,
{
switch (sst->dev_id) {
case SST_MRFLD_PCI_ID:
+ case SST_BYT_ACPI_ID:
sst_shim_write64(sst->shim, addr, (u64) data);
break;
}
--
1.7.0.4
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