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().
  ...

1 files changed, 513 insertions, 0 deletions

diff --git a/drivers/media/i2c/saa6588.c b/drivers/media/i2c/saa6588.c
new file mode 100644
index 000000000..8752f7cff
--- /dev/null
+++ b/drivers/media/i2c/saa6588.c
@@ -0,0 +1,513 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+    Driver for SAA6588 RDS decoder
+
+    (c) 2005 Hans J. Koch
+
+*/
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/wait.h>
+#include <linux/uaccess.h>
+
+#include <media/i2c/saa6588.h>
+#include <media/v4l2-device.h>
+
+
+/* insmod options */
+static unsigned int debug;
+static unsigned int xtal;
+static unsigned int mmbs;
+static unsigned int plvl;
+static unsigned int bufblocks = 100;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable debug messages");
+module_param(xtal, int, 0);
+MODULE_PARM_DESC(xtal, "select oscillator frequency (0..3), default 0");
+module_param(mmbs, int, 0);
+MODULE_PARM_DESC(mmbs, "enable MMBS mode: 0=off (default), 1=on");
+module_param(plvl, int, 0);
+MODULE_PARM_DESC(plvl, "select pause level (0..3), default 0");
+module_param(bufblocks, int, 0);
+MODULE_PARM_DESC(bufblocks, "number of buffered blocks, default 100");
+
+MODULE_DESCRIPTION("v4l2 driver module for SAA6588 RDS decoder");
+MODULE_AUTHOR("Hans J. Koch <koch@hjk-az.de>");
+
+MODULE_LICENSE("GPL");
+
+/* ---------------------------------------------------------------------- */
+
+#define UNSET       (-1U)
+#define PREFIX      "saa6588: "
+#define dprintk     if (debug) printk
+
+struct saa6588 {
+	struct v4l2_subdev sd;
+	struct delayed_work work;
+	spinlock_t lock;
+	unsigned char *buffer;
+	unsigned int buf_size;
+	unsigned int rd_index;
+	unsigned int wr_index;
+	unsigned int block_count;
+	unsigned char last_blocknum;
+	wait_queue_head_t read_queue;
+	int data_available_for_read;
+	u8 sync;
+};
+
+static inline struct saa6588 *to_saa6588(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct saa6588, sd);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * SAA6588 defines
+ */
+
+/* Initialization and mode control byte (0w) */
+
+/* bit 0+1 (DAC0/DAC1) */
+#define cModeStandard           0x00
+#define cModeFastPI             0x01
+#define cModeReducedRequest     0x02
+#define cModeInvalid            0x03
+
+/* bit 2 (RBDS) */
+#define cProcessingModeRDS      0x00
+#define cProcessingModeRBDS     0x04
+
+/* bit 3+4 (SYM0/SYM1) */
+#define cErrCorrectionNone      0x00
+#define cErrCorrection2Bits     0x08
+#define cErrCorrection5Bits     0x10
+#define cErrCorrectionNoneRBDS  0x18
+
+/* bit 5 (NWSY) */
+#define cSyncNormal             0x00
+#define cSyncRestart            0x20
+
+/* bit 6 (TSQD) */
+#define cSigQualityDetectOFF    0x00
+#define cSigQualityDetectON     0x40
+
+/* bit 7 (SQCM) */
+#define cSigQualityTriggered    0x00
+#define cSigQualityContinous    0x80
+
+/* Pause level and flywheel control byte (1w) */
+
+/* bits 0..5 (FEB0..FEB5) */
+#define cFlywheelMaxBlocksMask  0x3F
+#define cFlywheelDefault        0x20
+
+/* bits 6+7 (PL0/PL1) */
+#define cPauseLevel_11mV	0x00
+#define cPauseLevel_17mV        0x40
+#define cPauseLevel_27mV        0x80
+#define cPauseLevel_43mV        0xC0
+
+/* Pause time/oscillator frequency/quality detector control byte (1w) */
+
+/* bits 0..4 (SQS0..SQS4) */
+#define cQualityDetectSensMask  0x1F
+#define cQualityDetectDefault   0x0F
+
+/* bit 5 (SOSC) */
+#define cSelectOscFreqOFF	0x00
+#define cSelectOscFreqON	0x20
+
+/* bit 6+7 (PTF0/PTF1) */
+#define cOscFreq_4332kHz	0x00
+#define cOscFreq_8664kHz	0x40
+#define cOscFreq_12996kHz	0x80
+#define cOscFreq_17328kHz	0xC0
+
+/* ---------------------------------------------------------------------- */
+
+static bool block_from_buf(struct saa6588 *s, unsigned char *buf)
+{
+	int i;
+
+	if (s->rd_index == s->wr_index) {
+		if (debug > 2)
+			dprintk(PREFIX "Read: buffer empty.\n");
+		return false;
+	}
+
+	if (debug > 2) {
+		dprintk(PREFIX "Read: ");
+		for (i = s->rd_index; i < s->rd_index + 3; i++)
+			dprintk("0x%02x ", s->buffer[i]);
+	}
+
+	memcpy(buf, &s->buffer[s->rd_index], 3);
+
+	s->rd_index += 3;
+	if (s->rd_index >= s->buf_size)
+		s->rd_index = 0;
+	s->block_count--;
+
+	if (debug > 2)
+		dprintk("%d blocks total.\n", s->block_count);
+
+	return true;
+}
+
+static void read_from_buf(struct saa6588 *s, struct saa6588_command *a)
+{
+	unsigned char __user *buf_ptr = a->buffer;
+	unsigned char buf[3];
+	unsigned long flags;
+	unsigned int rd_blocks;
+	unsigned int i;
+
+	a->result = 0;
+	if (!a->buffer)
+		return;
+
+	while (!a->nonblocking && !s->data_available_for_read) {
+		int ret = wait_event_interruptible(s->read_queue,
+					     s->data_available_for_read);
+		if (ret == -ERESTARTSYS) {
+			a->result = -EINTR;
+			return;
+		}
+	}
+
+	rd_blocks = a->block_count;
+	spin_lock_irqsave(&s->lock, flags);
+	if (rd_blocks > s->block_count)
+		rd_blocks = s->block_count;
+	spin_unlock_irqrestore(&s->lock, flags);
+
+	if (!rd_blocks)
+		return;
+
+	for (i = 0; i < rd_blocks; i++) {
+		bool got_block;
+
+		spin_lock_irqsave(&s->lock, flags);
+		got_block = block_from_buf(s, buf);
+		spin_unlock_irqrestore(&s->lock, flags);
+		if (!got_block)
+			break;
+		if (copy_to_user(buf_ptr, buf, 3)) {
+			a->result = -EFAULT;
+			return;
+		}
+		buf_ptr += 3;
+		a->result += 3;
+	}
+	spin_lock_irqsave(&s->lock, flags);
+	s->data_available_for_read = (s->block_count > 0);
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+static void block_to_buf(struct saa6588 *s, unsigned char *blockbuf)
+{
+	unsigned int i;
+
+	if (debug > 3)
+		dprintk(PREFIX "New block: ");
+
+	for (i = 0; i < 3; ++i) {
+		if (debug > 3)
+			dprintk("0x%02x ", blockbuf[i]);
+		s->buffer[s->wr_index] = blockbuf[i];
+		s->wr_index++;
+	}
+
+	if (s->wr_index >= s->buf_size)
+		s->wr_index = 0;
+
+	if (s->wr_index == s->rd_index) {
+		s->rd_index += 3;
+		if (s->rd_index >= s->buf_size)
+			s->rd_index = 0;
+	} else
+		s->block_count++;
+
+	if (debug > 3)
+		dprintk("%d blocks total.\n", s->block_count);
+}
+
+static void saa6588_i2c_poll(struct saa6588 *s)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&s->sd);
+	unsigned long flags;
+	unsigned char tmpbuf[6];
+	unsigned char blocknum;
+	unsigned char tmp;
+
+	/* Although we only need 3 bytes, we have to read at least 6.
+	   SAA6588 returns garbage otherwise. */
+	if (6 != i2c_master_recv(client, &tmpbuf[0], 6)) {
+		if (debug > 1)
+			dprintk(PREFIX "read error!\n");
+		return;
+	}
+
+	s->sync = tmpbuf[0] & 0x10;
+	if (!s->sync)
+		return;
+	blocknum = tmpbuf[0] >> 5;
+	if (blocknum == s->last_blocknum) {
+		if (debug > 3)
+			dprintk("Saw block %d again.\n", blocknum);
+		return;
+	}
+
+	s->last_blocknum = blocknum;
+
+	/*
+	   Byte order according to v4l2 specification:
+
+	   Byte 0: Least Significant Byte of RDS Block
+	   Byte 1: Most Significant Byte of RDS Block
+	   Byte 2 Bit 7: Error bit. Indicates that an uncorrectable error
+	   occurred during reception of this block.
+	   Bit 6: Corrected bit. Indicates that an error was
+	   corrected for this data block.
+	   Bits 5-3: Same as bits 0-2.
+	   Bits 2-0: Block number.
+
+	   SAA6588 byte order is Status-MSB-LSB, so we have to swap the
+	   first and the last of the 3 bytes block.
+	 */
+
+	swap(tmpbuf[2], tmpbuf[0]);
+
+	/* Map 'Invalid block E' to 'Invalid Block' */
+	if (blocknum == 6)
+		blocknum = V4L2_RDS_BLOCK_INVALID;
+	/* And if are not in mmbs mode, then 'Block E' is also mapped
+	   to 'Invalid Block'. As far as I can tell MMBS is discontinued,
+	   and if there is ever a need to support E blocks, then please
+	   contact the linux-media mailinglist. */
+	else if (!mmbs && blocknum == 5)
+		blocknum = V4L2_RDS_BLOCK_INVALID;
+	tmp = blocknum;
+	tmp |= blocknum << 3;	/* Received offset == Offset Name (OK ?) */
+	if ((tmpbuf[2] & 0x03) == 0x03)
+		tmp |= V4L2_RDS_BLOCK_ERROR;	 /* uncorrectable error */
+	else if ((tmpbuf[2] & 0x03) != 0x00)
+		tmp |= V4L2_RDS_BLOCK_CORRECTED; /* corrected error */
+	tmpbuf[2] = tmp;	/* Is this enough ? Should we also check other bits ? */
+
+	spin_lock_irqsave(&s->lock, flags);
+	block_to_buf(s, tmpbuf);
+	spin_unlock_irqrestore(&s->lock, flags);
+	s->data_available_for_read = 1;
+	wake_up_interruptible(&s->read_queue);
+}
+
+static void saa6588_work(struct work_struct *work)
+{
+	struct saa6588 *s = container_of(work, struct saa6588, work.work);
+
+	saa6588_i2c_poll(s);
+	schedule_delayed_work(&s->work, msecs_to_jiffies(20));
+}
+
+static void saa6588_configure(struct saa6588 *s)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&s->sd);
+	unsigned char buf[3];
+	int rc;
+
+	buf[0] = cSyncRestart;
+	if (mmbs)
+		buf[0] |= cProcessingModeRBDS;
+
+	buf[1] = cFlywheelDefault;
+	switch (plvl) {
+	case 0:
+		buf[1] |= cPauseLevel_11mV;
+		break;
+	case 1:
+		buf[1] |= cPauseLevel_17mV;
+		break;
+	case 2:
+		buf[1] |= cPauseLevel_27mV;
+		break;
+	case 3:
+		buf[1] |= cPauseLevel_43mV;
+		break;
+	default:		/* nothing */
+		break;
+	}
+
+	buf[2] = cQualityDetectDefault | cSelectOscFreqON;
+
+	switch (xtal) {
+	case 0:
+		buf[2] |= cOscFreq_4332kHz;
+		break;
+	case 1:
+		buf[2] |= cOscFreq_8664kHz;
+		break;
+	case 2:
+		buf[2] |= cOscFreq_12996kHz;
+		break;
+	case 3:
+		buf[2] |= cOscFreq_17328kHz;
+		break;
+	default:		/* nothing */
+		break;
+	}
+
+	dprintk(PREFIX "writing: 0w=0x%02x 1w=0x%02x 2w=0x%02x\n",
+		buf[0], buf[1], buf[2]);
+
+	rc = i2c_master_send(client, buf, 3);
+	if (rc != 3)
+		printk(PREFIX "i2c i/o error: rc == %d (should be 3)\n", rc);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static long saa6588_command(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+	struct saa6588 *s = to_saa6588(sd);
+	struct saa6588_command *a = arg;
+
+	switch (cmd) {
+		/* --- close() for /dev/radio --- */
+	case SAA6588_CMD_CLOSE:
+		s->data_available_for_read = 1;
+		wake_up_interruptible(&s->read_queue);
+		s->data_available_for_read = 0;
+		a->result = 0;
+		break;
+		/* --- read() for /dev/radio --- */
+	case SAA6588_CMD_READ:
+		read_from_buf(s, a);
+		break;
+		/* --- poll() for /dev/radio --- */
+	case SAA6588_CMD_POLL:
+		a->poll_mask = 0;
+		if (s->data_available_for_read)
+			a->poll_mask |= EPOLLIN | EPOLLRDNORM;
+		poll_wait(a->instance, &s->read_queue, a->event_list);
+		break;
+
+	default:
+		/* nothing */
+		return -ENOIOCTLCMD;
+	}
+	return 0;
+}
+
+static int saa6588_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
+{
+	struct saa6588 *s = to_saa6588(sd);
+
+	vt->capability |= V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO;
+	if (s->sync)
+		vt->rxsubchans |= V4L2_TUNER_SUB_RDS;
+	return 0;
+}
+
+static int saa6588_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
+{
+	struct saa6588 *s = to_saa6588(sd);
+
+	saa6588_configure(s);
+	return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops saa6588_core_ops = {
+	.command = saa6588_command,
+};
+
+static const struct v4l2_subdev_tuner_ops saa6588_tuner_ops = {
+	.g_tuner = saa6588_g_tuner,
+	.s_tuner = saa6588_s_tuner,
+};
+
+static const struct v4l2_subdev_ops saa6588_ops = {
+	.core = &saa6588_core_ops,
+	.tuner = &saa6588_tuner_ops,
+};
+
+/* ---------------------------------------------------------------------- */
+
+static int saa6588_probe(struct i2c_client *client)
+{
+	struct saa6588 *s;
+	struct v4l2_subdev *sd;
+
+	v4l_info(client, "saa6588 found @ 0x%x (%s)\n",
+			client->addr << 1, client->adapter->name);
+
+	s = devm_kzalloc(&client->dev, sizeof(*s), GFP_KERNEL);
+	if (s == NULL)
+		return -ENOMEM;
+
+	s->buf_size = bufblocks * 3;
+
+	s->buffer = devm_kzalloc(&client->dev, s->buf_size, GFP_KERNEL);
+	if (s->buffer == NULL)
+		return -ENOMEM;
+	sd = &s->sd;
+	v4l2_i2c_subdev_init(sd, client, &saa6588_ops);
+	spin_lock_init(&s->lock);
+	s->block_count = 0;
+	s->wr_index = 0;
+	s->rd_index = 0;
+	s->last_blocknum = 0xff;
+	init_waitqueue_head(&s->read_queue);
+	s->data_available_for_read = 0;
+
+	saa6588_configure(s);
+
+	/* start polling via eventd */
+	INIT_DELAYED_WORK(&s->work, saa6588_work);
+	schedule_delayed_work(&s->work, 0);
+	return 0;
+}
+
+static void saa6588_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct saa6588 *s = to_saa6588(sd);
+
+	v4l2_device_unregister_subdev(sd);
+
+	cancel_delayed_work_sync(&s->work);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct i2c_device_id saa6588_id[] = {
+	{ "saa6588", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, saa6588_id);
+
+static struct i2c_driver saa6588_driver = {
+	.driver = {
+		.name	= "saa6588",
+	},
+	.probe_new	= saa6588_probe,
+	.remove		= saa6588_remove,
+	.id_table	= saa6588_id,
+};
+
+module_i2c_driver(saa6588_driver);