This adds a driver for the HDA block in Tegra SoCs. The HDA bus is
used to communicate with the HDMI codec on Tegra124.
Most of the code is re-used from the Intel/PCI HDA driver. It brings
over only two of thw module params, power_save and probe_mask.
Signed-off-by: Dylan Reid <dgreid@xxxxxxxxxxxx>
---
.../bindings/sound/nvidia,tegra124-hda.txt | 20 +
sound/pci/hda/Kconfig | 14 +
sound/pci/hda/Makefile | 2 +
sound/pci/hda/hda_tegra.c | 695 +++++++++++++++++++++
4 files changed, 731 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra124-hda.txt
create mode 100644 sound/pci/hda/hda_tegra.c
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra124-hda.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra124-hda.txt
new file mode 100644
index 0000000..c9256d3
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra124-hda.txt
@@ -0,0 +1,20 @@
+NVIDIA Tegra124 HDA controller
+
+Required properties:
+- compatible : "nvidia,tegra124-hda"
+- reg : Should contain the HDA registers location and length.
+- interrupts : The interrupt from the hda controller.
+- clocks : Must contain an entry for each required entry in clock-names.
+- clock-names : Must include the following entries: hda, hdacodec_2x, hda2hdmi
+
+Example:
+
+hda@70030000 {
+ compatible = "nvidia,tegra124-hda";
+ reg = <0x0 0x70030000 0x10000>;
+ interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&tegra_car TEGRA124_CLK_HDA>,
+ <&tegra_car TEGRA124_CLK_HDA2HDMI>,
+ <&tegra_car TEGRA124_CLK_HDA2CODEC_2X>;
+ clock-names = "hda", "hda2hdmi", "hdacodec_2x";
+};
diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig
index ac17c3f..4f6ee6b 100644
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -20,6 +20,20 @@ config SND_HDA_INTEL
To compile this driver as a module, choose M here: the module
will be called snd-hda-intel.
+config SND_HDA_TEGRA
+ tristate "Tegra HD Audio"
+ select SND_HDA
+ help
+ Say Y here to support the HDA controller present in Nvidia
+ Tegra SoCs
+
+ This options enables support for the HD Audio controller
+ present in some Nvidia Tegra SoCs, used to communicate audio
+ to the HDMI output.
+
+ To compile this driver as a module, choose M here: the module
+ will be called snd-hda-tegra.
+
if SND_HDA
config SND_HDA_DSP_LOADER
diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile
index d0d0c19..194f3093 100644
--- a/sound/pci/hda/Makefile
+++ b/sound/pci/hda/Makefile
@@ -1,5 +1,6 @@
snd-hda-intel-objs := hda_intel.o
snd-hda-controller-objs := hda_controller.o
+snd-hda-tegra-objs := hda_tegra.o
# for haswell power well
snd-hda-intel-$(CONFIG_SND_HDA_I915) += hda_i915.o
@@ -47,3 +48,4 @@ obj-$(CONFIG_SND_HDA_CODEC_HDMI) += snd-hda-codec-hdmi.o
# otherwise the codec patches won't be hooked before the PCI probe
# when built in kernel
obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o
+obj-$(CONFIG_SND_HDA_TEGRA) += snd-hda-tegra.o
diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
new file mode 100644
index 0000000..c36bbca
--- /dev/null
+++ b/sound/pci/hda/hda_tegra.c
@@ -0,0 +1,695 @@
+/*
+ *
+ * Implementation of primary alsa driver code base for Tegra HDA.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/clocksource.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/reboot.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <linux/of_device.h>
+#include <linux/time.h>
+#include <linux/completion.h>
+
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <linux/firmware.h>
+#include "hda_codec.h"
+#include "hda_controller.h"
+#include "hda_priv.h"
+
+#define DRV_NAME "tegra-hda"
+
+/* Defines for Nvidia Tegra HDA support */
+#define NVIDIA_TEGRA_HDA_BAR0_OFFSET 0x8000
+
+#define NVIDIA_TEGRA_HDA_CFG_CMD_OFFSET 0x1004
+#define NVIDIA_TEGRA_HDA_CFG_BAR0_OFFSET 0x1010
+
+#define NVIDIA_TEGRA_HDA_ENABLE_IO_SPACE (1 << 0)
+#define NVIDIA_TEGRA_HDA_ENABLE_MEM_SPACE (1 << 1)
+#define NVIDIA_TEGRA_HDA_ENABLE_BUS_MASTER (1 << 2)
+#define NVIDIA_TEGRA_HDA_ENABLE_SERR (1 << 8)
+#define NVIDIA_TEGRA_HDA_DISABLE_INTR (1 << 10)
+#define NVIDIA_TEGRA_HDA_BAR0_INIT_PROGRAM 0xFFFFFFFF
+#define NVIDIA_TEGRA_HDA_BAR0_FINAL_PROGRAM (1 << 14)
+
+/* IPFS */
+#define NVIDIA_TEGRA_HDA_IPFS_CONFIG 0x180
+#define NVIDIA_TEGRA_HDA_IPFS_EN_FPCI 0x1
+
+#define NVIDIA_TEGRA_HDA_IPFS_FPCI_BAR0 0x80
+#define NVIDIA_TEGRA_HDA_FPCI_BAR0_START 0x40
+
+#define NVIDIA_TEGRA_HDA_IPFS_INTR_MASK 0x188
+#define NVIDIA_TEGRA_HDA_IPFS_EN_INTR (1 << 16)
+
+struct hda_tegra_data {
+ struct azx chip;
+ struct platform_device *pdev;
+ struct clk **platform_clks;
+ int platform_clk_count;
+ void __iomem *remap_config_addr;
+};
+
+static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
+module_param_array(probe_mask, int, NULL, 0444);
+MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
+
+static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
+static int *power_save_addr = &power_save;
+module_param(power_save, bint, 0644);
+MODULE_PARM_DESC(power_save,
+ "Automatic power-saving timeout (in seconds, 0 = disable).");
+
+/*
+ * DMA page allocation ops.
+ */
+static int dma_alloc_pages(struct azx *chip,
+ int type,
+ size_t size,
+ struct snd_dma_buffer *buf)
+{
+ return snd_dma_alloc_pages(type,
+ chip->card->dev,
+ size, buf);
+}
+
+static void dma_free_pages(struct azx *chip, struct snd_dma_buffer *buf)
+{
+ snd_dma_free_pages(buf);
+}
+
+static int substream_alloc_pages(struct azx *chip,
+ struct snd_pcm_substream *substream,
+ size_t size)
+{
+ struct azx_dev *azx_dev = get_azx_dev(substream);
+
+ azx_dev->bufsize = 0;
+ azx_dev->period_bytes = 0;
+ azx_dev->format_val = 0;
+ return snd_pcm_lib_malloc_pages(substream, size);
+}
+
+static int substream_free_pages(struct azx *chip,
+ struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+/*
+ * Register access ops. Tegra HDA register access is DWORD only.
+ */
+#define MASK_LONG_ALIGN 0x3UL
+#define SHIFT_BYTE 3
+#define SHIFT_BITS(addr) \
+ (((unsigned int)(addr) & MASK_LONG_ALIGN) << SHIFT_BYTE)
+#define ADDR_ALIGN_L(addr) \
+ (void *)((unsigned int)(addr) & ~MASK_LONG_ALIGN)
+#define MASK(bits) (BIT(bits) - 1)
+#define MASK_REG(addr, bits) (MASK(bits) << SHIFT_BITS(addr))
+
+static void tegra_hda_writel(u32 value, u32 *addr)
+{
+ writel(value, addr);
+}
+
+static u32 tegra_hda_readl(u32 *addr)
+{
+ return readl(addr);
+}
+
+static void tegra_hda_writew(u16 value, u16 *addr)
+{
+ unsigned int shift_bits = SHIFT_BITS(addr);
+ writel((readl(ADDR_ALIGN_L(addr)) & ~MASK_REG(addr, 16)) |
+ ((value) << shift_bits), ADDR_ALIGN_L(addr));
+}
+
+static u16 tegra_hda_readw(u16 *addr)
+{
+ return (readl(ADDR_ALIGN_L(addr)) >> SHIFT_BITS(addr)) & MASK(16);
+}
+
+static void tegra_hda_writeb(u8 value, u8 *addr)
+{
+ writel((readl(ADDR_ALIGN_L(addr)) & ~MASK_REG(addr, 8)) |
+ ((value) << SHIFT_BITS(addr)), ADDR_ALIGN_L(addr));
+}
+
+static u8 tegra_hda_readb(u8 *addr)
+{
+ return (readl(ADDR_ALIGN_L(addr)) >> SHIFT_BITS(addr)) & MASK(8);
+}
+
+static const struct hda_controller_ops tegra_hda_reg_ops = {
+ .reg_writel = tegra_hda_writel,
+ .reg_readl = tegra_hda_readl,
+ .reg_writew = tegra_hda_writew,
+ .reg_readw = tegra_hda_readw,
+ .reg_writeb = tegra_hda_writeb,
+ .reg_readb = tegra_hda_readb,
+ .dma_alloc_pages = dma_alloc_pages,
+ .dma_free_pages = dma_free_pages,
+ .substream_alloc_pages = substream_alloc_pages,
+ .substream_free_pages = substream_free_pages,
+};
+
+static int tegra_hda_acquire_irq(struct azx *chip, int do_disconnect)
+{
+ struct hda_tegra_data *tdata =
+ container_of(chip, struct hda_tegra_data, chip);
+ int irq_id = platform_get_irq(tdata->pdev, 0);
+
+ if (devm_request_irq(chip->card->dev, irq_id, azx_interrupt,
+ IRQF_SHARED, KBUILD_MODNAME, chip)) {
+ dev_err(chip->card->dev,
+ "unable to grab IRQ %d, disabling device\n",
+ irq_id);
+ if (do_disconnect)
+ snd_card_disconnect(chip->card);
+ return -1;
+ }
+ chip->irq = irq_id;
+ return 0;
+}
+
+static void tegra_hda_reg_update_bits(void __iomem *base, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ unsigned int data;
+
+ data = readl(base + reg);
+ data &= ~mask;
+ data |= (val & mask);
+ writel(data, base + reg);
+}
+
+static void hda_tegra_init(struct hda_tegra_data *tdata)
+{
+ /*Enable the PCI access */
+ tegra_hda_reg_update_bits(tdata->remap_config_addr,
+ NVIDIA_TEGRA_HDA_IPFS_CONFIG,
+ NVIDIA_TEGRA_HDA_IPFS_EN_FPCI,
+ NVIDIA_TEGRA_HDA_IPFS_EN_FPCI);
+ /* Enable MEM/IO space and bus master */
+ tegra_hda_reg_update_bits(tdata->remap_config_addr,
+ NVIDIA_TEGRA_HDA_CFG_CMD_OFFSET, 0x507,
+ NVIDIA_TEGRA_HDA_ENABLE_MEM_SPACE |
+ NVIDIA_TEGRA_HDA_ENABLE_IO_SPACE |
+ NVIDIA_TEGRA_HDA_ENABLE_BUS_MASTER |
+ NVIDIA_TEGRA_HDA_ENABLE_SERR);
+ tegra_hda_reg_update_bits(tdata->remap_config_addr,
+ NVIDIA_TEGRA_HDA_CFG_BAR0_OFFSET, 0xFFFFFFFF,
+ NVIDIA_TEGRA_HDA_BAR0_INIT_PROGRAM);
+ tegra_hda_reg_update_bits(tdata->remap_config_addr,
+ NVIDIA_TEGRA_HDA_CFG_BAR0_OFFSET, 0xFFFFFFFF,
+ NVIDIA_TEGRA_HDA_BAR0_FINAL_PROGRAM);
+ tegra_hda_reg_update_bits(tdata->remap_config_addr,
+ NVIDIA_TEGRA_HDA_IPFS_FPCI_BAR0, 0xFFFFFFFF,
+ NVIDIA_TEGRA_HDA_FPCI_BAR0_START);
+ tegra_hda_reg_update_bits(tdata->remap_config_addr,
+ NVIDIA_TEGRA_HDA_IPFS_INTR_MASK,
+ NVIDIA_TEGRA_HDA_IPFS_EN_INTR,
+ NVIDIA_TEGRA_HDA_IPFS_EN_INTR);
+
+ return;
+}
+
+static void hda_tegra_enable_clocks(struct hda_tegra_data *data)
+{
+ int i;
+
+ for (i = 0; i < data->platform_clk_count; i++)
+ clk_prepare_enable(data->platform_clks[i]);
+}
+
+static void hda_tegra_disable_clocks(struct hda_tegra_data *data)
+{
+ int i;
+
+ for (i = 0; i < data->platform_clk_count; i++)
+ clk_disable_unprepare(data->platform_clks[i]);
+}
+
+#if CONFIG_PM_SLEEP
+/*
+ * power management
+ */
+static int tegra_hda_suspend(struct device *dev)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct azx *chip = card->private_data;
+ struct azx_pcm *p;
+
+ snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+ list_for_each_entry(p, &chip->pcm_list, list)
+ snd_pcm_suspend_all(p->pcm);
+ if (chip->initialized)
+ snd_hda_suspend(chip->bus);
+
+ if (pm_runtime_active(card->dev)) {
+ azx_stop_chip(chip);
+ azx_enter_link_reset(chip);
+ }
+
+ return 0;
+}
+
+static int tegra_hda_resume(struct device *dev)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct azx *chip = card->private_data;
+ struct hda_tegra_data *tdata =
+ container_of(chip, struct hda_tegra_data, chip);
+
+ if (pm_runtime_active(card->dev)) {
+ hda_tegra_init(tdata);
+
+ azx_init_chip(chip, 1);
+
+ snd_hda_resume(chip->bus);
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+#ifdef CONFIG_PM_RUNTIME
+static int tegra_hda_runtime_suspend(struct device *dev)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct azx *chip = card->private_data;
+ struct hda_tegra_data *tdata =
+ container_of(chip, struct hda_tegra_data, chip);
+
+ /* enable controller wake up event */
+ azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
+ STATESTS_INT_MASK);
+
+ azx_stop_chip(chip);
+ azx_enter_link_reset(chip);
+ hda_tegra_disable_clocks(tdata);
+ return 0;
+}
+
+static int tegra_hda_runtime_resume(struct device *dev)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct azx *chip = card->private_data;
+ struct hda_bus *bus;
+ struct hda_codec *codec;
+ struct hda_tegra_data *tdata =
+ container_of(chip, struct hda_tegra_data, chip);
+ int status;
+
+ hda_tegra_enable_clocks(tdata);
+
+ /* Read STATESTS before controller reset */
+ status = azx_readw(chip, STATESTS);
+
+ hda_tegra_init(tdata);
+
+ azx_init_chip(chip, 1);
+
+ snd_hda_resume(chip->bus);
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+
+ bus = chip->bus;
+ if (status && bus) {
+ list_for_each_entry(codec, &bus->codec_list, list)
+ if (status & (1 << codec->addr))
+ queue_delayed_work(codec->bus->workq,
+ &codec->jackpoll_work,
+ codec->jackpoll_interval);
+ }
+
+ /* disable controller Wake Up event*/
+ azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) & ~STATESTS_INT_MASK);
+
+ return 0;
+}
+
+#endif /* CONFIG_PM_RUNTIME */
+
+static const struct dev_pm_ops azx_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(tegra_hda_suspend, tegra_hda_resume)
+ SET_RUNTIME_PM_OPS(tegra_hda_runtime_suspend,
+ tegra_hda_runtime_resume,
+ NULL)
+};
+
+/*
+ * reboot notifier for hang-up problem at power-down
+ */
+static int tegra_hda_halt(struct notifier_block *nb, unsigned long event,
+ void *buf)
+{
+ struct azx *chip = container_of(nb, struct azx, reboot_notifier);
+ snd_hda_bus_reboot_notify(chip->bus);
+ azx_stop_chip(chip);
+ return NOTIFY_OK;
+}
+
+static void tegra_hda_notifier_register(struct azx *chip)
+{
+ chip->reboot_notifier.notifier_call = tegra_hda_halt;
+ register_reboot_notifier(&chip->reboot_notifier);
+}
+
+static void tegra_hda_notifier_unregister(struct azx *chip)
+{
+ if (chip->reboot_notifier.notifier_call)
+ unregister_reboot_notifier(&chip->reboot_notifier);
+}
+
+/*
+ * destructor
+ */
+static int tegra_hda_free(struct azx *chip)
+{
+ int i;
+
+ if (chip->running)
+ pm_runtime_get_noresume(chip->card->dev);
+
+ tegra_hda_notifier_unregister(chip);
+
+ if (chip->initialized) {
+ for (i = 0; i < chip->num_streams; i++)
+ azx_stream_stop(chip, &chip->azx_dev[i]);
+ azx_stop_chip(chip);
+ }
+
+ azx_free_stream_pages(chip);
+
+ return 0;
+}
+
+static int tegra_hda_dev_free(struct snd_device *device)
+{
+ return tegra_hda_free(device->device_data);
+}
+
+static const char * const tegra_clk_names[] = {
+ "hda",
+ "hda2codec_2x",
+ "hda2hdmi",
+};
+
+static int hda_tegra_init_chip(struct azx *chip)
+{
+ struct hda_tegra_data *tdata =
+ container_of(chip, struct hda_tegra_data, chip);
+ struct device *dev = &tdata->pdev->dev;
+ struct resource *res, *region;
+ int i;
+
+ tdata->platform_clk_count = ARRAY_SIZE(tegra_clk_names);
+ tdata->platform_clks = devm_kzalloc(dev,
+ tdata->platform_clk_count *
+ sizeof(*tdata->platform_clks),
+ GFP_KERNEL);
+ if (!tdata->platform_clks)
+ return -ENOMEM;
+
+ for (i = 0; i < tdata->platform_clk_count; i++) {
+ tdata->platform_clks[i] = devm_clk_get(dev, tegra_clk_names[i]);
+ if (IS_ERR(tdata->platform_clks[i]))
+ return PTR_ERR(tdata->platform_clks[i]);
+ }
+
+ res = platform_get_resource(tdata->pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
+
+ region = devm_request_mem_region(dev, res->start,
+ resource_size(res),
+ tdata->pdev->name);
+ if (!region)
+ return -ENOMEM;
+
+ chip->addr = res->start;
+ chip->remap_addr = devm_ioremap(dev, res->start, resource_size(res));
+ if (!chip->remap_addr)
+ return -ENXIO;
+
+ tdata->remap_config_addr = chip->remap_addr;
+ chip->remap_addr += NVIDIA_TEGRA_HDA_BAR0_OFFSET;
+ chip->addr += NVIDIA_TEGRA_HDA_BAR0_OFFSET;
+
+ hda_tegra_enable_clocks(tdata);
+
+ hda_tegra_init(tdata);
+
+ return 0;
+}
+
+static void power_down_all_codecs(struct azx *chip)
+{
+ /* The codecs were powered up in snd_hda_codec_new().
+ * Now all initialization done, so turn them down if possible
+ */
+ struct hda_codec *codec;
+ list_for_each_entry(codec, &chip->bus->codec_list, list)
+ snd_hda_power_down(codec);
+}
+
+static int tegra_hda_first_init(struct azx *chip)
+{
+ struct snd_card *card = chip->card;
+ int err;
+ unsigned short gcap;
+
+ err = hda_tegra_init_chip(chip);
+ if (err)
+ return err;
+
+ if (tegra_hda_acquire_irq(chip, 0) < 0)
+ return -EBUSY;
+
+ synchronize_irq(chip->irq);
+
+ gcap = azx_readw(chip, GCAP);
+ dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
+
+ /* read number of streams from GCAP register instead of using
+ * hardcoded value
+ */
+ chip->capture_streams = (gcap >> 8) & 0x0f;
+ chip->playback_streams = (gcap >> 12) & 0x0f;
+ if (!chip->playback_streams && !chip->capture_streams) {
+ /* gcap didn't give any info, switching to old method */
+ chip->playback_streams = ICH6_NUM_PLAYBACK;
+ chip->capture_streams = ICH6_NUM_CAPTURE;
+ }
+ chip->capture_index_offset = 0;
+ chip->playback_index_offset = chip->capture_streams;
+ chip->num_streams = chip->playback_streams + chip->capture_streams;
+ chip->azx_dev = devm_kzalloc(card->dev,
+ chip->num_streams * sizeof(*chip->azx_dev),
+ GFP_KERNEL);
+ if (!chip->azx_dev)
+ return -ENOMEM;
+
+ err = azx_alloc_stream_pages(chip);
+ if (err < 0)
+ return err;
+
+ /* initialize streams */
+ azx_init_stream(chip);
+
+ /* initialize chip */
+ azx_init_chip(chip, 1);
+
+ /* codec detection */
+ if (!chip->codec_mask) {
+ dev_err(card->dev, "no codecs found!\n");
+ return -ENODEV;
+ }
+
+ strcpy(card->driver, "HDA-Tegra");
+ strcpy(card->shortname, "HDA-Tegra");
+ snprintf(card->longname, sizeof(card->longname),
+ "%s at 0x%lx irq %i",
+ card->shortname, chip->addr, chip->irq);
+
+ return 0;
+}
+
+/*
+ * constructor
+ */
+static int tegra_hda_create(struct snd_card *card,
+ int dev,
+ struct platform_device *pdev,
+ unsigned int driver_caps,
+ const struct hda_controller_ops *hda_ops,
+ struct hda_tegra_data *tdata)
+{
+ static struct snd_device_ops ops = {
+ .dev_free = tegra_hda_dev_free,
+ };
+ struct azx *chip;
+ int err;
+
+ chip = &tdata->chip;
+
+ spin_lock_init(&chip->reg_lock);
+ mutex_init(&chip->open_mutex);
+ chip->card = card;
+ chip->ops = hda_ops;
+ chip->irq = -1;
+ chip->driver_caps = driver_caps;
+ chip->driver_type = driver_caps & 0xff;
+ chip->dev_index = dev;
+ INIT_LIST_HEAD(&chip->pcm_list);
+ INIT_LIST_HEAD(&chip->list);
+
+ chip->position_fix[0] = POS_FIX_AUTO;
+ chip->position_fix[1] = POS_FIX_AUTO;
+ chip->codec_probe_mask = probe_mask[dev];
+
+ chip->single_cmd = false;
+ chip->snoop = true;
+
+ err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+ if (err < 0) {
+ dev_err(card->dev, "Error creating device [card]!\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static unsigned int tegra_driver_flags = AZX_DCAPS_RIRB_DELAY |
+ AZX_DCAPS_PM_RUNTIME;
+
+static const struct of_device_id tegra_platform_hda_match[] = {
+ { .compatible = "nvidia,tegra124-hda", .data = &tegra_driver_flags },
+ {},
+};
+
+static int hda_tegra_probe(struct platform_device *pdev)
+{
+ static int dev;
+ struct snd_card *card;
+ struct azx *chip;
+ struct hda_tegra_data *tdata;
+ const struct of_device_id *of_id;
+ const unsigned int *driver_data;
+ int err;
+
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+
+ of_id = of_match_device(tegra_platform_hda_match, &pdev->dev);
+ if (!of_id)
+ return -EINVAL;
+
+ tdata = devm_kzalloc(&pdev->dev, sizeof(*tdata), GFP_KERNEL);
+ if (!tdata)
+ return -ENOMEM;
+ tdata->pdev = pdev;
+ chip = &tdata->chip;
+
+ err = snd_card_new(&pdev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
+ THIS_MODULE, 0, &card);
+ if (err < 0) {
+ dev_err(&pdev->dev, "Error creating card!\n");
+ return err;
+ }
+
+ driver_data = of_id->data;
+ err = tegra_hda_create(card, dev, pdev, *driver_data,
+ &tegra_hda_reg_ops, tdata);
+ if (err < 0)
+ goto out_free;
+ card->private_data = chip;
+
+ dev_set_drvdata(&pdev->dev, card);
+
+ err = tegra_hda_first_init(chip);
+ if (err < 0)
+ goto out_free;
+
+ /* create codec instances */
+ err = azx_codec_create(chip, NULL, 0, power_save_addr);
+ if (err < 0)
+ goto out_free;
+
+ err = azx_codec_configure(chip);
+ if (err < 0)
+ goto out_free;
+
+ /* create PCM streams */
+ err = snd_hda_build_pcms(chip->bus);
+ if (err < 0)
+ goto out_free;
+
+ /* create mixer controls */
+ err = azx_mixer_create(chip);
+ if (err < 0)
+ goto out_free;
+
+ err = snd_card_register(chip->card);
+ if (err < 0)
+ goto out_free;
+
+ chip->running = 1;
+ pm_runtime_enable(chip->card->dev);
+ hda_tegra_disable_clocks(tdata);
+ power_down_all_codecs(chip);
+ tegra_hda_notifier_register(chip);
+
+ dev++;
+ return 0;
+
+out_free:
+ snd_card_free(card);
+ return err;
+}
+
+static int hda_tegra_remove(struct platform_device *pdev)
+{
+ return snd_card_free(dev_get_drvdata(&pdev->dev));
+}
+
+static struct platform_driver tegra_platform_hda = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .pm = &azx_pm,
+ .of_match_table = tegra_platform_hda_match,
+ },
+ .probe = hda_tegra_probe,
+ .remove = hda_tegra_remove,
+};
+module_platform_driver(tegra_platform_hda);
+
+MODULE_DESCRIPTION("Tegra HDA bus driver");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, tegra_platform_hda_match);
--
1.8.1.3.605.g02339dd
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