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, 437 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/stv6110.c b/drivers/media/dvb-frontends/stv6110.c
new file mode 100644
index 000000000..963f6a896
--- /dev/null
+++ b/drivers/media/dvb-frontends/stv6110.c
@@ -0,0 +1,437 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * stv6110.c
+ *
+ * Driver for ST STV6110 satellite tuner IC.
+ *
+ * Copyright (C) 2009 NetUP Inc.
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+
+#include <linux/types.h>
+
+#include "stv6110.h"
+
+/* Max transfer size done by I2C transfer functions */
+#define MAX_XFER_SIZE  64
+
+static int debug;
+
+struct stv6110_priv {
+	int i2c_address;
+	struct i2c_adapter *i2c;
+
+	u32 mclk;
+	u8 clk_div;
+	u8 gain;
+	u8 regs[8];
+};
+
+#define dprintk(args...) \
+	do { \
+		if (debug) \
+			printk(KERN_DEBUG args); \
+	} while (0)
+
+static s32 abssub(s32 a, s32 b)
+{
+	if (a > b)
+		return a - b;
+	else
+		return b - a;
+};
+
+static void stv6110_release(struct dvb_frontend *fe)
+{
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+}
+
+static int stv6110_write_regs(struct dvb_frontend *fe, u8 buf[],
+							int start, int len)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	int rc;
+	u8 cmdbuf[MAX_XFER_SIZE];
+	struct i2c_msg msg = {
+		.addr	= priv->i2c_address,
+		.flags	= 0,
+		.buf	= cmdbuf,
+		.len	= len + 1
+	};
+
+	dprintk("%s\n", __func__);
+
+	if (1 + len > sizeof(cmdbuf)) {
+		printk(KERN_WARNING
+		       "%s: i2c wr: len=%d is too big!\n",
+		       KBUILD_MODNAME, len);
+		return -EINVAL;
+	}
+
+	if (start + len > 8)
+		return -EINVAL;
+
+	memcpy(&cmdbuf[1], buf, len);
+	cmdbuf[0] = start;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	rc = i2c_transfer(priv->i2c, &msg, 1);
+	if (rc != 1)
+		dprintk("%s: i2c error\n", __func__);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	return 0;
+}
+
+static int stv6110_read_regs(struct dvb_frontend *fe, u8 regs[],
+							int start, int len)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	int rc;
+	u8 reg[] = { start };
+	struct i2c_msg msg[] = {
+		{
+			.addr	= priv->i2c_address,
+			.flags	= 0,
+			.buf	= reg,
+			.len	= 1,
+		}, {
+			.addr	= priv->i2c_address,
+			.flags	= I2C_M_RD,
+			.buf	= regs,
+			.len	= len,
+		},
+	};
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	rc = i2c_transfer(priv->i2c, msg, 2);
+	if (rc != 2)
+		dprintk("%s: i2c error\n", __func__);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	memcpy(&priv->regs[start], regs, len);
+
+	return 0;
+}
+
+static int stv6110_read_reg(struct dvb_frontend *fe, int start)
+{
+	u8 buf[] = { 0 };
+	stv6110_read_regs(fe, buf, start, 1);
+
+	return buf[0];
+}
+
+static int stv6110_sleep(struct dvb_frontend *fe)
+{
+	u8 reg[] = { 0 };
+	stv6110_write_regs(fe, reg, 0, 1);
+
+	return 0;
+}
+
+static u32 carrier_width(u32 symbol_rate, enum fe_rolloff rolloff)
+{
+	u32 rlf;
+
+	switch (rolloff) {
+	case ROLLOFF_20:
+		rlf = 20;
+		break;
+	case ROLLOFF_25:
+		rlf = 25;
+		break;
+	default:
+		rlf = 35;
+		break;
+	}
+
+	return symbol_rate  + ((symbol_rate * rlf) / 100);
+}
+
+static int stv6110_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 r8, ret = 0x04;
+	int i;
+
+	if ((bandwidth / 2) > 36000000) /*BW/2 max=31+5=36 mhz for r8=31*/
+		r8 = 31;
+	else if ((bandwidth / 2) < 5000000) /* BW/2 min=5Mhz for F=0 */
+		r8 = 0;
+	else /*if 5 < BW/2 < 36*/
+		r8 = (bandwidth / 2) / 1000000 - 5;
+
+	/* ctrl3, RCCLKOFF = 0 Activate the calibration Clock */
+	/* ctrl3, CF = r8 Set the LPF value */
+	priv->regs[RSTV6110_CTRL3] &= ~((1 << 6) | 0x1f);
+	priv->regs[RSTV6110_CTRL3] |= (r8 & 0x1f);
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1);
+	/* stat1, CALRCSTRT = 1 Start LPF auto calibration*/
+	priv->regs[RSTV6110_STAT1] |= 0x02;
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_STAT1], RSTV6110_STAT1, 1);
+
+	i = 0;
+	/* Wait for CALRCSTRT == 0 */
+	while ((i < 10) && (ret != 0)) {
+		ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x02);
+		mdelay(1);	/* wait for LPF auto calibration */
+		i++;
+	}
+
+	/* RCCLKOFF = 1 calibration done, deactivate the calibration Clock */
+	priv->regs[RSTV6110_CTRL3] |= (1 << 6);
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1);
+	return 0;
+}
+
+static int stv6110_init(struct dvb_frontend *fe)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 buf0[] = { 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e };
+
+	memcpy(priv->regs, buf0, 8);
+	/* K = (Reference / 1000000) - 16 */
+	priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3);
+	priv->regs[RSTV6110_CTRL1] |=
+				((((priv->mclk / 1000000) - 16) & 0x1f) << 3);
+
+	/* divisor value for the output clock */
+	priv->regs[RSTV6110_CTRL2] &= ~0xc0;
+	priv->regs[RSTV6110_CTRL2] |= (priv->clk_div << 6);
+
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1], RSTV6110_CTRL1, 8);
+	msleep(1);
+	stv6110_set_bandwidth(fe, 72000000);
+
+	return 0;
+}
+
+static int stv6110_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u32 nbsteps, divider, psd2, freq;
+	u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+	stv6110_read_regs(fe, regs, 0, 8);
+	/*N*/
+	divider = (priv->regs[RSTV6110_TUNING2] & 0x0f) << 8;
+	divider += priv->regs[RSTV6110_TUNING1];
+
+	/*R*/
+	nbsteps  = (priv->regs[RSTV6110_TUNING2] >> 6) & 3;
+	/*p*/
+	psd2  = (priv->regs[RSTV6110_TUNING2] >> 4) & 1;
+
+	freq = divider * (priv->mclk / 1000);
+	freq /= (1 << (nbsteps + psd2));
+	freq /= 4;
+
+	*frequency = freq;
+
+	return 0;
+}
+
+static int stv6110_set_frequency(struct dvb_frontend *fe, u32 frequency)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 ret = 0x04;
+	u32 divider, ref, p, presc, i, result_freq, vco_freq;
+	s32 p_calc, p_calc_opt = 1000, r_div, r_div_opt = 0, p_val;
+
+	dprintk("%s, freq=%d kHz, mclk=%d Hz\n", __func__,
+						frequency, priv->mclk);
+
+	/* K = (Reference / 1000000) - 16 */
+	priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3);
+	priv->regs[RSTV6110_CTRL1] |=
+				((((priv->mclk / 1000000) - 16) & 0x1f) << 3);
+
+	/* BB_GAIN = db/2 */
+	priv->regs[RSTV6110_CTRL2] &= ~0x0f;
+	priv->regs[RSTV6110_CTRL2] |= (priv->gain & 0x0f);
+
+	if (frequency <= 1023000) {
+		p = 1;
+		presc = 0;
+	} else if (frequency <= 1300000) {
+		p = 1;
+		presc = 1;
+	} else if (frequency <= 2046000) {
+		p = 0;
+		presc = 0;
+	} else {
+		p = 0;
+		presc = 1;
+	}
+	/* DIV4SEL = p*/
+	priv->regs[RSTV6110_TUNING2] &= ~(1 << 4);
+	priv->regs[RSTV6110_TUNING2] |= (p << 4);
+
+	/* PRESC32ON = presc */
+	priv->regs[RSTV6110_TUNING2] &= ~(1 << 5);
+	priv->regs[RSTV6110_TUNING2] |= (presc << 5);
+
+	p_val = (int)(1 << (p + 1)) * 10;/* P = 2 or P = 4 */
+	for (r_div = 0; r_div <= 3; r_div++) {
+		p_calc = (priv->mclk / 100000);
+		p_calc /= (1 << (r_div + 1));
+		if ((abssub(p_calc, p_val)) < (abssub(p_calc_opt, p_val)))
+			r_div_opt = r_div;
+
+		p_calc_opt = (priv->mclk / 100000);
+		p_calc_opt /= (1 << (r_div_opt + 1));
+	}
+
+	ref = priv->mclk / ((1 << (r_div_opt + 1))  * (1 << (p + 1)));
+	divider = (((frequency * 1000) + (ref >> 1)) / ref);
+
+	/* RDIV = r_div_opt */
+	priv->regs[RSTV6110_TUNING2] &= ~(3 << 6);
+	priv->regs[RSTV6110_TUNING2] |= (((r_div_opt) & 3) << 6);
+
+	/* NDIV_MSB = MSB(divider) */
+	priv->regs[RSTV6110_TUNING2] &= ~0x0f;
+	priv->regs[RSTV6110_TUNING2] |= (((divider) >> 8) & 0x0f);
+
+	/* NDIV_LSB, LSB(divider) */
+	priv->regs[RSTV6110_TUNING1] = (divider & 0xff);
+
+	/* CALVCOSTRT = 1 VCO Auto Calibration */
+	priv->regs[RSTV6110_STAT1] |= 0x04;
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1],
+						RSTV6110_CTRL1, 8);
+
+	i = 0;
+	/* Wait for CALVCOSTRT == 0 */
+	while ((i < 10) && (ret != 0)) {
+		ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x04);
+		msleep(1); /* wait for VCO auto calibration */
+		i++;
+	}
+
+	ret = stv6110_read_reg(fe, RSTV6110_STAT1);
+	stv6110_get_frequency(fe, &result_freq);
+
+	vco_freq = divider * ((priv->mclk / 1000) / ((1 << (r_div_opt + 1))));
+	dprintk("%s, stat1=%x, lo_freq=%d kHz, vco_frec=%d kHz\n", __func__,
+						ret, result_freq, vco_freq);
+
+	return 0;
+}
+
+static int stv6110_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	u32 bandwidth = carrier_width(c->symbol_rate, c->rolloff);
+
+	stv6110_set_frequency(fe, c->frequency);
+	stv6110_set_bandwidth(fe, bandwidth);
+
+	return 0;
+}
+
+static int stv6110_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 r8 = 0;
+	u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+	stv6110_read_regs(fe, regs, 0, 8);
+
+	/* CF */
+	r8 = priv->regs[RSTV6110_CTRL3] & 0x1f;
+	*bandwidth = (r8 + 5) * 2000000;/* x2 for ZIF tuner BW/2 = F+5 Mhz */
+
+	return 0;
+}
+
+static const struct dvb_tuner_ops stv6110_tuner_ops = {
+	.info = {
+		.name = "ST STV6110",
+		.frequency_min_hz  =  950 * MHz,
+		.frequency_max_hz  = 2150 * MHz,
+		.frequency_step_hz =    1 * MHz,
+	},
+	.init = stv6110_init,
+	.release = stv6110_release,
+	.sleep = stv6110_sleep,
+	.set_params = stv6110_set_params,
+	.get_frequency = stv6110_get_frequency,
+	.set_frequency = stv6110_set_frequency,
+	.get_bandwidth = stv6110_get_bandwidth,
+	.set_bandwidth = stv6110_set_bandwidth,
+
+};
+
+struct dvb_frontend *stv6110_attach(struct dvb_frontend *fe,
+					const struct stv6110_config *config,
+					struct i2c_adapter *i2c)
+{
+	struct stv6110_priv *priv = NULL;
+	u8 reg0[] = { 0x00, 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e };
+
+	struct i2c_msg msg[] = {
+		{
+			.addr = config->i2c_address,
+			.flags = 0,
+			.buf = reg0,
+			.len = 9
+		}
+	};
+	int ret;
+
+	/* divisor value for the output clock */
+	reg0[2] &= ~0xc0;
+	reg0[2] |= (config->clk_div << 6);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	ret = i2c_transfer(i2c, msg, 1);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	if (ret != 1)
+		return NULL;
+
+	priv = kzalloc(sizeof(struct stv6110_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return NULL;
+
+	priv->i2c_address = config->i2c_address;
+	priv->i2c = i2c;
+	priv->mclk = config->mclk;
+	priv->clk_div = config->clk_div;
+	priv->gain = config->gain;
+
+	memcpy(&priv->regs, &reg0[1], 8);
+
+	memcpy(&fe->ops.tuner_ops, &stv6110_tuner_ops,
+				sizeof(struct dvb_tuner_ops));
+	fe->tuner_priv = priv;
+	printk(KERN_INFO "STV6110 attached on addr=%x!\n", priv->i2c_address);
+
+	return fe;
+}
+EXPORT_SYMBOL(stv6110_attach);
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("ST STV6110 driver");
+MODULE_AUTHOR("Igor M. Liplianin");
+MODULE_LICENSE("GPL");