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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /sound/soc/sh/ssi.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'sound/soc/sh/ssi.c')
-rw-r--r--sound/soc/sh/ssi.c403
1 files changed, 403 insertions, 0 deletions
diff --git a/sound/soc/sh/ssi.c b/sound/soc/sh/ssi.c
new file mode 100644
index 000000000..96cf523c2
--- /dev/null
+++ b/sound/soc/sh/ssi.c
@@ -0,0 +1,403 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Serial Sound Interface (I2S) support for SH7760/SH7780
+//
+// Copyright (c) 2007 Manuel Lauss <mano@roarinelk.homelinux.net>
+//
+// dont forget to set IPSEL/OMSEL register bits (in your board code) to
+// enable SSI output pins!
+
+/*
+ * LIMITATIONS:
+ * The SSI unit has only one physical data line, so full duplex is
+ * impossible. This can be remedied on the SH7760 by using the
+ * other SSI unit for recording; however the SH7780 has only 1 SSI
+ * unit, and its pins are shared with the AC97 unit, among others.
+ *
+ * FEATURES:
+ * The SSI features "compressed mode": in this mode it continuously
+ * streams PCM data over the I2S lines and uses LRCK as a handshake
+ * signal. Can be used to send compressed data (AC3/DTS) to a DSP.
+ * The number of bits sent over the wire in a frame can be adjusted
+ * and can be independent from the actual sample bit depth. This is
+ * useful to support TDM mode codecs like the AD1939 which have a
+ * fixed TDM slot size, regardless of sample resolution.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <asm/io.h>
+
+#define SSICR 0x00
+#define SSISR 0x04
+
+#define CR_DMAEN (1 << 28)
+#define CR_CHNL_SHIFT 22
+#define CR_CHNL_MASK (3 << CR_CHNL_SHIFT)
+#define CR_DWL_SHIFT 19
+#define CR_DWL_MASK (7 << CR_DWL_SHIFT)
+#define CR_SWL_SHIFT 16
+#define CR_SWL_MASK (7 << CR_SWL_SHIFT)
+#define CR_SCK_MASTER (1 << 15) /* bitclock master bit */
+#define CR_SWS_MASTER (1 << 14) /* wordselect master bit */
+#define CR_SCKP (1 << 13) /* I2Sclock polarity */
+#define CR_SWSP (1 << 12) /* LRCK polarity */
+#define CR_SPDP (1 << 11)
+#define CR_SDTA (1 << 10) /* i2s alignment (msb/lsb) */
+#define CR_PDTA (1 << 9) /* fifo data alignment */
+#define CR_DEL (1 << 8) /* delay data by 1 i2sclk */
+#define CR_BREN (1 << 7) /* clock gating in burst mode */
+#define CR_CKDIV_SHIFT 4
+#define CR_CKDIV_MASK (7 << CR_CKDIV_SHIFT) /* bitclock divider */
+#define CR_MUTE (1 << 3) /* SSI mute */
+#define CR_CPEN (1 << 2) /* compressed mode */
+#define CR_TRMD (1 << 1) /* transmit/receive select */
+#define CR_EN (1 << 0) /* enable SSI */
+
+#define SSIREG(reg) (*(unsigned long *)(ssi->mmio + (reg)))
+
+struct ssi_priv {
+ unsigned long mmio;
+ unsigned long sysclk;
+ int inuse;
+} ssi_cpu_data[] = {
+#if defined(CONFIG_CPU_SUBTYPE_SH7760)
+ {
+ .mmio = 0xFE680000,
+ },
+ {
+ .mmio = 0xFE690000,
+ },
+#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
+ {
+ .mmio = 0xFFE70000,
+ },
+#else
+#error "Unsupported SuperH SoC"
+#endif
+};
+
+/*
+ * track usage of the SSI; it is simplex-only so prevent attempts of
+ * concurrent playback + capture. FIXME: any locking required?
+ */
+static int ssi_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[dai->id];
+ if (ssi->inuse) {
+ pr_debug("ssi: already in use!\n");
+ return -EBUSY;
+ } else
+ ssi->inuse = 1;
+ return 0;
+}
+
+static void ssi_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[dai->id];
+
+ ssi->inuse = 0;
+}
+
+static int ssi_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[dai->id];
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ SSIREG(SSICR) |= CR_DMAEN | CR_EN;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ SSIREG(SSICR) &= ~(CR_DMAEN | CR_EN);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ssi_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[dai->id];
+ unsigned long ssicr = SSIREG(SSICR);
+ unsigned int bits, channels, swl, recv, i;
+
+ channels = params_channels(params);
+ bits = params->msbits;
+ recv = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? 0 : 1;
+
+ pr_debug("ssi_hw_params() enter\nssicr was %08lx\n", ssicr);
+ pr_debug("bits: %u channels: %u\n", bits, channels);
+
+ ssicr &= ~(CR_TRMD | CR_CHNL_MASK | CR_DWL_MASK | CR_PDTA |
+ CR_SWL_MASK);
+
+ /* direction (send/receive) */
+ if (!recv)
+ ssicr |= CR_TRMD; /* transmit */
+
+ /* channels */
+ if ((channels < 2) || (channels > 8) || (channels & 1)) {
+ pr_debug("ssi: invalid number of channels\n");
+ return -EINVAL;
+ }
+ ssicr |= ((channels >> 1) - 1) << CR_CHNL_SHIFT;
+
+ /* DATA WORD LENGTH (DWL): databits in audio sample */
+ i = 0;
+ switch (bits) {
+ case 32: ++i;
+ case 24: ++i;
+ case 22: ++i;
+ case 20: ++i;
+ case 18: ++i;
+ case 16: ++i;
+ ssicr |= i << CR_DWL_SHIFT;
+ case 8: break;
+ default:
+ pr_debug("ssi: invalid sample width\n");
+ return -EINVAL;
+ }
+
+ /*
+ * SYSTEM WORD LENGTH: size in bits of half a frame over the I2S
+ * wires. This is usually bits_per_sample x channels/2; i.e. in
+ * Stereo mode the SWL equals DWL. SWL can be bigger than the
+ * product of (channels_per_slot x samplebits), e.g. for codecs
+ * like the AD1939 which only accept 32bit wide TDM slots. For
+ * "standard" I2S operation we set SWL = chans / 2 * DWL here.
+ * Waiting for ASoC to get TDM support ;-)
+ */
+ if ((bits > 16) && (bits <= 24)) {
+ bits = 24; /* these are padded by the SSI */
+ /*ssicr |= CR_PDTA;*/ /* cpu/data endianness ? */
+ }
+ i = 0;
+ swl = (bits * channels) / 2;
+ switch (swl) {
+ case 256: ++i;
+ case 128: ++i;
+ case 64: ++i;
+ case 48: ++i;
+ case 32: ++i;
+ case 16: ++i;
+ ssicr |= i << CR_SWL_SHIFT;
+ case 8: break;
+ default:
+ pr_debug("ssi: invalid system word length computed\n");
+ return -EINVAL;
+ }
+
+ SSIREG(SSICR) = ssicr;
+
+ pr_debug("ssi_hw_params() leave\nssicr is now %08lx\n", ssicr);
+ return 0;
+}
+
+static int ssi_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[cpu_dai->id];
+
+ ssi->sysclk = freq;
+
+ return 0;
+}
+
+/*
+ * This divider is used to generate the SSI_SCK (I2S bitclock) from the
+ * clock at the HAC_BIT_CLK ("oversampling clock") pin.
+ */
+static int ssi_set_clkdiv(struct snd_soc_dai *dai, int did, int div)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[dai->id];
+ unsigned long ssicr;
+ int i;
+
+ i = 0;
+ ssicr = SSIREG(SSICR) & ~CR_CKDIV_MASK;
+ switch (div) {
+ case 16: ++i;
+ case 8: ++i;
+ case 4: ++i;
+ case 2: ++i;
+ SSIREG(SSICR) = ssicr | (i << CR_CKDIV_SHIFT);
+ case 1: break;
+ default:
+ pr_debug("ssi: invalid sck divider %d\n", div);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ssi_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct ssi_priv *ssi = &ssi_cpu_data[dai->id];
+ unsigned long ssicr = SSIREG(SSICR);
+
+ pr_debug("ssi_set_fmt()\nssicr was 0x%08lx\n", ssicr);
+
+ ssicr &= ~(CR_DEL | CR_PDTA | CR_BREN | CR_SWSP | CR_SCKP |
+ CR_SWS_MASTER | CR_SCK_MASTER);
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ ssicr |= CR_DEL | CR_PDTA;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ssicr |= CR_DEL;
+ break;
+ default:
+ pr_debug("ssi: unsupported format\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_MASK) {
+ case SND_SOC_DAIFMT_CONT:
+ break;
+ case SND_SOC_DAIFMT_GATED:
+ ssicr |= CR_BREN;
+ break;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ ssicr |= CR_SCKP; /* sample data at low clkedge */
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ ssicr |= CR_SCKP | CR_SWSP;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ ssicr |= CR_SWSP; /* word select starts low */
+ break;
+ default:
+ pr_debug("ssi: invalid inversion\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_BC_FC:
+ break;
+ case SND_SOC_DAIFMT_BP_FC:
+ ssicr |= CR_SCK_MASTER;
+ break;
+ case SND_SOC_DAIFMT_BC_FP:
+ ssicr |= CR_SWS_MASTER;
+ break;
+ case SND_SOC_DAIFMT_BP_FP:
+ ssicr |= CR_SWS_MASTER | CR_SCK_MASTER;
+ break;
+ default:
+ pr_debug("ssi: invalid master/secondary configuration\n");
+ return -EINVAL;
+ }
+
+ SSIREG(SSICR) = ssicr;
+ pr_debug("ssi_set_fmt() leave\nssicr is now 0x%08lx\n", ssicr);
+
+ return 0;
+}
+
+/* the SSI depends on an external clocksource (at HAC_BIT_CLK) even in
+ * Master mode, so really this is board specific; the SSI can do any
+ * rate with the right bitclk and divider settings.
+ */
+#define SSI_RATES \
+ SNDRV_PCM_RATE_8000_192000
+
+/* the SSI can do 8-32 bit samples, with 8 possible channels */
+#define SSI_FMTS \
+ (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | \
+ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_U20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3LE | \
+ SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_U32_LE)
+
+static const struct snd_soc_dai_ops ssi_dai_ops = {
+ .startup = ssi_startup,
+ .shutdown = ssi_shutdown,
+ .trigger = ssi_trigger,
+ .hw_params = ssi_hw_params,
+ .set_sysclk = ssi_set_sysclk,
+ .set_clkdiv = ssi_set_clkdiv,
+ .set_fmt = ssi_set_fmt,
+};
+
+static struct snd_soc_dai_driver sh4_ssi_dai[] = {
+{
+ .name = "ssi-dai.0",
+ .playback = {
+ .rates = SSI_RATES,
+ .formats = SSI_FMTS,
+ .channels_min = 2,
+ .channels_max = 8,
+ },
+ .capture = {
+ .rates = SSI_RATES,
+ .formats = SSI_FMTS,
+ .channels_min = 2,
+ .channels_max = 8,
+ },
+ .ops = &ssi_dai_ops,
+},
+#ifdef CONFIG_CPU_SUBTYPE_SH7760
+{
+ .name = "ssi-dai.1",
+ .playback = {
+ .rates = SSI_RATES,
+ .formats = SSI_FMTS,
+ .channels_min = 2,
+ .channels_max = 8,
+ },
+ .capture = {
+ .rates = SSI_RATES,
+ .formats = SSI_FMTS,
+ .channels_min = 2,
+ .channels_max = 8,
+ },
+ .ops = &ssi_dai_ops,
+},
+#endif
+};
+
+static const struct snd_soc_component_driver sh4_ssi_component = {
+ .name = "sh4-ssi",
+ .legacy_dai_naming = 1,
+};
+
+static int sh4_soc_dai_probe(struct platform_device *pdev)
+{
+ return devm_snd_soc_register_component(&pdev->dev, &sh4_ssi_component,
+ sh4_ssi_dai,
+ ARRAY_SIZE(sh4_ssi_dai));
+}
+
+static struct platform_driver sh4_ssi_driver = {
+ .driver = {
+ .name = "sh4-ssi-dai",
+ },
+
+ .probe = sh4_soc_dai_probe,
+};
+
+module_platform_driver(sh4_ssi_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("SuperH onchip SSI (I2S) audio driver");
+MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");