From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/media/dvb-frontends/itd1000.c | 396 ++++++++++++++++++++++++++++++++++ 1 file changed, 396 insertions(+) create mode 100644 drivers/media/dvb-frontends/itd1000.c (limited to 'drivers/media/dvb-frontends/itd1000.c') diff --git a/drivers/media/dvb-frontends/itd1000.c b/drivers/media/dvb-frontends/itd1000.c new file mode 100644 index 000000000..1b3347865 --- /dev/null +++ b/drivers/media/dvb-frontends/itd1000.c @@ -0,0 +1,396 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for the Integrant ITD1000 "Zero-IF Tuner IC for Direct Broadcast Satellite" + * + * Copyright (c) 2007-8 Patrick Boettcher + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include "itd1000.h" +#include "itd1000_priv.h" + +/* Max transfer size done by I2C transfer functions */ +#define MAX_XFER_SIZE 64 + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); + +#define itd_dbg(args...) do { \ + if (debug) { \ + printk(KERN_DEBUG "ITD1000: " args);\ + } \ +} while (0) + +#define itd_warn(args...) do { \ + printk(KERN_WARNING "ITD1000: " args); \ +} while (0) + +#define itd_info(args...) do { \ + printk(KERN_INFO "ITD1000: " args); \ +} while (0) + +/* don't write more than one byte with flexcop behind */ +static int itd1000_write_regs(struct itd1000_state *state, u8 reg, u8 v[], u8 len) +{ + u8 buf[MAX_XFER_SIZE]; + struct i2c_msg msg = { + .addr = state->cfg->i2c_address, .flags = 0, .buf = buf, .len = len+1 + }; + + if (1 + len > sizeof(buf)) { + printk(KERN_WARNING + "itd1000: i2c wr reg=%04x: len=%d is too big!\n", + reg, len); + return -EINVAL; + } + + buf[0] = reg; + memcpy(&buf[1], v, len); + + /* itd_dbg("wr %02x: %02x\n", reg, v[0]); */ + + if (i2c_transfer(state->i2c, &msg, 1) != 1) { + printk(KERN_WARNING "itd1000 I2C write failed\n"); + return -EREMOTEIO; + } + return 0; +} + +static int itd1000_read_reg(struct itd1000_state *state, u8 reg) +{ + u8 val; + struct i2c_msg msg[2] = { + { .addr = state->cfg->i2c_address, .flags = 0, .buf = ®, .len = 1 }, + { .addr = state->cfg->i2c_address, .flags = I2C_M_RD, .buf = &val, .len = 1 }, + }; + + /* ugly flexcop workaround */ + itd1000_write_regs(state, (reg - 1) & 0xff, &state->shadow[(reg - 1) & 0xff], 1); + + if (i2c_transfer(state->i2c, msg, 2) != 2) { + itd_warn("itd1000 I2C read failed\n"); + return -EREMOTEIO; + } + return val; +} + +static inline int itd1000_write_reg(struct itd1000_state *state, u8 r, u8 v) +{ + u8 tmp = v; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */ + int ret = itd1000_write_regs(state, r, &tmp, 1); + state->shadow[r] = tmp; + return ret; +} + + +static struct { + u32 symbol_rate; + u8 pgaext : 4; /* PLLFH */ + u8 bbgvmin : 4; /* BBGVMIN */ +} itd1000_lpf_pga[] = { + { 0, 0x8, 0x3 }, + { 5200000, 0x8, 0x3 }, + { 12200000, 0x4, 0x3 }, + { 15400000, 0x2, 0x3 }, + { 19800000, 0x2, 0x3 }, + { 21500000, 0x2, 0x3 }, + { 24500000, 0x2, 0x3 }, + { 28400000, 0x2, 0x3 }, + { 33400000, 0x2, 0x3 }, + { 34400000, 0x1, 0x4 }, + { 34400000, 0x1, 0x4 }, + { 38400000, 0x1, 0x4 }, + { 38400000, 0x1, 0x4 }, + { 40400000, 0x1, 0x4 }, + { 45400000, 0x1, 0x4 }, +}; + +static void itd1000_set_lpf_bw(struct itd1000_state *state, u32 symbol_rate) +{ + u8 i; + u8 con1 = itd1000_read_reg(state, CON1) & 0xfd; + u8 pllfh = itd1000_read_reg(state, PLLFH) & 0x0f; + u8 bbgvmin = itd1000_read_reg(state, BBGVMIN) & 0xf0; + u8 bw = itd1000_read_reg(state, BW) & 0xf0; + + itd_dbg("symbol_rate = %d\n", symbol_rate); + + /* not sure what is that ? - starting to download the table */ + itd1000_write_reg(state, CON1, con1 | (1 << 1)); + + for (i = 0; i < ARRAY_SIZE(itd1000_lpf_pga); i++) + if (symbol_rate < itd1000_lpf_pga[i].symbol_rate) { + itd_dbg("symrate: index: %d pgaext: %x, bbgvmin: %x\n", i, itd1000_lpf_pga[i].pgaext, itd1000_lpf_pga[i].bbgvmin); + itd1000_write_reg(state, PLLFH, pllfh | (itd1000_lpf_pga[i].pgaext << 4)); + itd1000_write_reg(state, BBGVMIN, bbgvmin | (itd1000_lpf_pga[i].bbgvmin)); + itd1000_write_reg(state, BW, bw | (i & 0x0f)); + break; + } + + itd1000_write_reg(state, CON1, con1 | (0 << 1)); +} + +static struct { + u8 vcorg; + u32 fmax_rg; +} itd1000_vcorg[] = { + { 1, 920000 }, + { 2, 971000 }, + { 3, 1031000 }, + { 4, 1091000 }, + { 5, 1171000 }, + { 6, 1281000 }, + { 7, 1381000 }, + { 8, 500000 }, /* this is intentional. */ + { 9, 1451000 }, + { 10, 1531000 }, + { 11, 1631000 }, + { 12, 1741000 }, + { 13, 1891000 }, + { 14, 2071000 }, + { 15, 2250000 }, +}; + +static void itd1000_set_vco(struct itd1000_state *state, u32 freq_khz) +{ + u8 i; + u8 gvbb_i2c = itd1000_read_reg(state, GVBB_I2C) & 0xbf; + u8 vco_chp1_i2c = itd1000_read_reg(state, VCO_CHP1_I2C) & 0x0f; + u8 adcout; + + /* reserved bit again (reset ?) */ + itd1000_write_reg(state, GVBB_I2C, gvbb_i2c | (1 << 6)); + + for (i = 0; i < ARRAY_SIZE(itd1000_vcorg); i++) { + if (freq_khz < itd1000_vcorg[i].fmax_rg) { + itd1000_write_reg(state, VCO_CHP1_I2C, vco_chp1_i2c | (itd1000_vcorg[i].vcorg << 4)); + msleep(1); + + adcout = itd1000_read_reg(state, PLLLOCK) & 0x0f; + + itd_dbg("VCO: %dkHz: %d -> ADCOUT: %d %02x\n", freq_khz, itd1000_vcorg[i].vcorg, adcout, vco_chp1_i2c); + + if (adcout > 13) { + if (!(itd1000_vcorg[i].vcorg == 7 || itd1000_vcorg[i].vcorg == 15)) + itd1000_write_reg(state, VCO_CHP1_I2C, vco_chp1_i2c | ((itd1000_vcorg[i].vcorg + 1) << 4)); + } else if (adcout < 2) { + if (!(itd1000_vcorg[i].vcorg == 1 || itd1000_vcorg[i].vcorg == 9)) + itd1000_write_reg(state, VCO_CHP1_I2C, vco_chp1_i2c | ((itd1000_vcorg[i].vcorg - 1) << 4)); + } + break; + } + } +} + +static const struct { + u32 freq; + u8 values[10]; /* RFTR, RFST1 - RFST9 */ +} itd1000_fre_values[] = { + { 1075000, { 0x59, 0x1d, 0x1c, 0x17, 0x16, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } }, + { 1250000, { 0x89, 0x1e, 0x1d, 0x17, 0x15, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } }, + { 1450000, { 0x89, 0x1e, 0x1d, 0x17, 0x15, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } }, + { 1650000, { 0x69, 0x1e, 0x1d, 0x17, 0x15, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } }, + { 1750000, { 0x69, 0x1e, 0x17, 0x15, 0x14, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a } }, + { 1850000, { 0x69, 0x1d, 0x17, 0x16, 0x14, 0x0f, 0x0e, 0x0d, 0x0b, 0x0a } }, + { 1900000, { 0x69, 0x1d, 0x17, 0x15, 0x14, 0x0f, 0x0e, 0x0d, 0x0b, 0x0a } }, + { 1950000, { 0x69, 0x1d, 0x17, 0x16, 0x14, 0x13, 0x0e, 0x0d, 0x0b, 0x0a } }, + { 2050000, { 0x69, 0x1e, 0x1d, 0x17, 0x16, 0x14, 0x13, 0x0e, 0x0b, 0x0a } }, + { 2150000, { 0x69, 0x1d, 0x1c, 0x17, 0x15, 0x14, 0x13, 0x0f, 0x0e, 0x0b } } +}; + + +#define FREF 16 + +static void itd1000_set_lo(struct itd1000_state *state, u32 freq_khz) +{ + int i, j; + u32 plln, pllf; + u64 tmp; + + plln = (freq_khz * 1000) / 2 / FREF; + + /* Compute the factional part times 1000 */ + tmp = plln % 1000000; + plln /= 1000000; + + tmp *= 1048576; + do_div(tmp, 1000000); + pllf = (u32) tmp; + + state->frequency = ((plln * 1000) + (pllf * 1000)/1048576) * 2*FREF; + itd_dbg("frequency: %dkHz (wanted) %dkHz (set), PLLF = %d, PLLN = %d\n", freq_khz, state->frequency, pllf, plln); + + itd1000_write_reg(state, PLLNH, 0x80); /* PLLNH */ + itd1000_write_reg(state, PLLNL, plln & 0xff); + itd1000_write_reg(state, PLLFH, (itd1000_read_reg(state, PLLFH) & 0xf0) | ((pllf >> 16) & 0x0f)); + itd1000_write_reg(state, PLLFM, (pllf >> 8) & 0xff); + itd1000_write_reg(state, PLLFL, (pllf >> 0) & 0xff); + + for (i = 0; i < ARRAY_SIZE(itd1000_fre_values); i++) { + if (freq_khz <= itd1000_fre_values[i].freq) { + itd_dbg("fre_values: %d\n", i); + itd1000_write_reg(state, RFTR, itd1000_fre_values[i].values[0]); + for (j = 0; j < 9; j++) + itd1000_write_reg(state, RFST1+j, itd1000_fre_values[i].values[j+1]); + break; + } + } + + itd1000_set_vco(state, freq_khz); +} + +static int itd1000_set_parameters(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct itd1000_state *state = fe->tuner_priv; + u8 pllcon1; + + itd1000_set_lo(state, c->frequency); + itd1000_set_lpf_bw(state, c->symbol_rate); + + pllcon1 = itd1000_read_reg(state, PLLCON1) & 0x7f; + itd1000_write_reg(state, PLLCON1, pllcon1 | (1 << 7)); + itd1000_write_reg(state, PLLCON1, pllcon1); + + return 0; +} + +static int itd1000_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct itd1000_state *state = fe->tuner_priv; + *frequency = state->frequency; + return 0; +} + +static int itd1000_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) +{ + return 0; +} + +static u8 itd1000_init_tab[][2] = { + { PLLCON1, 0x65 }, /* Register does not change */ + { PLLNH, 0x80 }, /* Bits [7:6] do not change */ + { RESERVED_0X6D, 0x3b }, + { VCO_CHP2_I2C, 0x12 }, + { 0x72, 0xf9 }, /* No such regsister defined */ + { RESERVED_0X73, 0xff }, + { RESERVED_0X74, 0xb2 }, + { RESERVED_0X75, 0xc7 }, + { EXTGVBBRF, 0xf0 }, + { DIVAGCCK, 0x80 }, + { BBTR, 0xa0 }, + { RESERVED_0X7E, 0x4f }, + { 0x82, 0x88 }, /* No such regsister defined */ + { 0x83, 0x80 }, /* No such regsister defined */ + { 0x84, 0x80 }, /* No such regsister defined */ + { RESERVED_0X85, 0x74 }, + { RESERVED_0X86, 0xff }, + { RESERVED_0X88, 0x02 }, + { RESERVED_0X89, 0x16 }, + { RFST0, 0x1f }, + { RESERVED_0X94, 0x66 }, + { RESERVED_0X95, 0x66 }, + { RESERVED_0X96, 0x77 }, + { RESERVED_0X97, 0x99 }, + { RESERVED_0X98, 0xff }, + { RESERVED_0X99, 0xfc }, + { RESERVED_0X9A, 0xba }, + { RESERVED_0X9B, 0xaa }, +}; + +static u8 itd1000_reinit_tab[][2] = { + { VCO_CHP1_I2C, 0x8a }, + { BW, 0x87 }, + { GVBB_I2C, 0x03 }, + { BBGVMIN, 0x03 }, + { CON1, 0x2e }, +}; + + +static int itd1000_init(struct dvb_frontend *fe) +{ + struct itd1000_state *state = fe->tuner_priv; + int i; + + for (i = 0; i < ARRAY_SIZE(itd1000_init_tab); i++) + itd1000_write_reg(state, itd1000_init_tab[i][0], itd1000_init_tab[i][1]); + + for (i = 0; i < ARRAY_SIZE(itd1000_reinit_tab); i++) + itd1000_write_reg(state, itd1000_reinit_tab[i][0], itd1000_reinit_tab[i][1]); + + return 0; +} + +static int itd1000_sleep(struct dvb_frontend *fe) +{ + return 0; +} + +static void itd1000_release(struct dvb_frontend *fe) +{ + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; +} + +static const struct dvb_tuner_ops itd1000_tuner_ops = { + .info = { + .name = "Integrant ITD1000", + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz, + .frequency_step_hz = 125 * kHz, + }, + + .release = itd1000_release, + + .init = itd1000_init, + .sleep = itd1000_sleep, + + .set_params = itd1000_set_parameters, + .get_frequency = itd1000_get_frequency, + .get_bandwidth = itd1000_get_bandwidth +}; + + +struct dvb_frontend *itd1000_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct itd1000_config *cfg) +{ + struct itd1000_state *state = NULL; + u8 i = 0; + + state = kzalloc(sizeof(struct itd1000_state), GFP_KERNEL); + if (state == NULL) + return NULL; + + state->cfg = cfg; + state->i2c = i2c; + + i = itd1000_read_reg(state, 0); + if (i != 0) { + kfree(state); + return NULL; + } + itd_info("successfully identified (ID: %d)\n", i); + + memset(state->shadow, 0xff, sizeof(state->shadow)); + for (i = 0x65; i < 0x9c; i++) + state->shadow[i] = itd1000_read_reg(state, i); + + memcpy(&fe->ops.tuner_ops, &itd1000_tuner_ops, sizeof(struct dvb_tuner_ops)); + + fe->tuner_priv = state; + + return fe; +} +EXPORT_SYMBOL(itd1000_attach); + +MODULE_AUTHOR("Patrick Boettcher "); +MODULE_DESCRIPTION("Integrant ITD1000 driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3