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/mt312.c | 839 ++++++++++++++++++++++++++++++++++++ 1 file changed, 839 insertions(+) create mode 100644 drivers/media/dvb-frontends/mt312.c (limited to 'drivers/media/dvb-frontends/mt312.c') diff --git a/drivers/media/dvb-frontends/mt312.c b/drivers/media/dvb-frontends/mt312.c new file mode 100644 index 000000000..d43a67045 --- /dev/null +++ b/drivers/media/dvb-frontends/mt312.c @@ -0,0 +1,839 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + Driver for Zarlink VP310/MT312/ZL10313 Satellite Channel Decoder + + Copyright (C) 2003 Andreas Oberritter + Copyright (C) 2008 Matthias Schwarzott + + + References: + http://products.zarlink.com/product_profiles/MT312.htm + http://products.zarlink.com/product_profiles/SL1935.htm +*/ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include "mt312_priv.h" +#include "mt312.h" + +/* Max transfer size done by I2C transfer functions */ +#define MAX_XFER_SIZE 64 + +struct mt312_state { + struct i2c_adapter *i2c; + /* configuration settings */ + const struct mt312_config *config; + struct dvb_frontend frontend; + + u8 id; + unsigned long xtal; + u8 freq_mult; +}; + +static int debug; +#define dprintk(args...) \ + do { \ + if (debug) \ + printk(KERN_DEBUG "mt312: " args); \ + } while (0) + +#define MT312_PLL_CLK 10000000UL /* 10 MHz */ +#define MT312_PLL_CLK_10_111 10111000UL /* 10.111 MHz */ + +static int mt312_read(struct mt312_state *state, const enum mt312_reg_addr reg, + u8 *buf, const size_t count) +{ + int ret; + struct i2c_msg msg[2]; + u8 regbuf[1] = { reg }; + + msg[0].addr = state->config->demod_address; + msg[0].flags = 0; + msg[0].buf = regbuf; + msg[0].len = 1; + msg[1].addr = state->config->demod_address; + msg[1].flags = I2C_M_RD; + msg[1].buf = buf; + msg[1].len = count; + + ret = i2c_transfer(state->i2c, msg, 2); + + if (ret != 2) { + printk(KERN_DEBUG "%s: ret == %d\n", __func__, ret); + return -EREMOTEIO; + } + + if (debug) { + int i; + dprintk("R(%d):", reg & 0x7f); + for (i = 0; i < count; i++) + printk(KERN_CONT " %02x", buf[i]); + printk("\n"); + } + + return 0; +} + +static int mt312_write(struct mt312_state *state, const enum mt312_reg_addr reg, + const u8 *src, const size_t count) +{ + int ret; + u8 buf[MAX_XFER_SIZE]; + struct i2c_msg msg; + + if (1 + count > sizeof(buf)) { + printk(KERN_WARNING + "mt312: write: len=%zu is too big!\n", count); + return -EINVAL; + } + + if (debug) { + int i; + dprintk("W(%d):", reg & 0x7f); + for (i = 0; i < count; i++) + printk(KERN_CONT " %02x", src[i]); + printk("\n"); + } + + buf[0] = reg; + memcpy(&buf[1], src, count); + + msg.addr = state->config->demod_address; + msg.flags = 0; + msg.buf = buf; + msg.len = count + 1; + + ret = i2c_transfer(state->i2c, &msg, 1); + + if (ret != 1) { + dprintk("%s: ret == %d\n", __func__, ret); + return -EREMOTEIO; + } + + return 0; +} + +static inline int mt312_readreg(struct mt312_state *state, + const enum mt312_reg_addr reg, u8 *val) +{ + return mt312_read(state, reg, val, 1); +} + +static inline int mt312_writereg(struct mt312_state *state, + const enum mt312_reg_addr reg, const u8 val) +{ + u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */ + + + return mt312_write(state, reg, &tmp, 1); +} + +static int mt312_reset(struct mt312_state *state, const u8 full) +{ + return mt312_writereg(state, RESET, full ? 0x80 : 0x40); +} + +static int mt312_get_inversion(struct mt312_state *state, + enum fe_spectral_inversion *i) +{ + int ret; + u8 vit_mode; + + ret = mt312_readreg(state, VIT_MODE, &vit_mode); + if (ret < 0) + return ret; + + if (vit_mode & 0x80) /* auto inversion was used */ + *i = (vit_mode & 0x40) ? INVERSION_ON : INVERSION_OFF; + + return 0; +} + +static int mt312_get_symbol_rate(struct mt312_state *state, u32 *sr) +{ + int ret; + u8 sym_rate_h; + u8 dec_ratio; + u16 sym_rat_op; + u16 monitor; + u8 buf[2]; + + ret = mt312_readreg(state, SYM_RATE_H, &sym_rate_h); + if (ret < 0) + return ret; + + if (sym_rate_h & 0x80) { + /* symbol rate search was used */ + ret = mt312_writereg(state, MON_CTRL, 0x03); + if (ret < 0) + return ret; + + ret = mt312_read(state, MONITOR_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + monitor = (buf[0] << 8) | buf[1]; + + dprintk("sr(auto) = %u\n", + DIV_ROUND_CLOSEST(monitor * 15625, 4)); + } else { + ret = mt312_writereg(state, MON_CTRL, 0x05); + if (ret < 0) + return ret; + + ret = mt312_read(state, MONITOR_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + dec_ratio = ((buf[0] >> 5) & 0x07) * 32; + + ret = mt312_read(state, SYM_RAT_OP_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + sym_rat_op = (buf[0] << 8) | buf[1]; + + dprintk("sym_rat_op=%d dec_ratio=%d\n", + sym_rat_op, dec_ratio); + dprintk("*sr(manual) = %lu\n", + (((state->xtal * 8192) / (sym_rat_op + 8192)) * + 2) - dec_ratio); + } + + return 0; +} + +static int mt312_get_code_rate(struct mt312_state *state, enum fe_code_rate *cr) +{ + const enum fe_code_rate fec_tab[8] = + { FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_6_7, FEC_7_8, + FEC_AUTO, FEC_AUTO }; + + int ret; + u8 fec_status; + + ret = mt312_readreg(state, FEC_STATUS, &fec_status); + if (ret < 0) + return ret; + + *cr = fec_tab[(fec_status >> 4) & 0x07]; + + return 0; +} + +static int mt312_initfe(struct dvb_frontend *fe) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 buf[2]; + + /* wake up */ + ret = mt312_writereg(state, CONFIG, + (state->freq_mult == 6 ? 0x88 : 0x8c)); + if (ret < 0) + return ret; + + /* wait at least 150 usec */ + udelay(150); + + /* full reset */ + ret = mt312_reset(state, 1); + if (ret < 0) + return ret; + +/* Per datasheet, write correct values. 09/28/03 ACCJr. + * If we don't do this, we won't get FE_HAS_VITERBI in the VP310. */ + { + u8 buf_def[8] = { 0x14, 0x12, 0x03, 0x02, + 0x01, 0x00, 0x00, 0x00 }; + + ret = mt312_write(state, VIT_SETUP, buf_def, sizeof(buf_def)); + if (ret < 0) + return ret; + } + + switch (state->id) { + case ID_ZL10313: + /* enable ADC */ + ret = mt312_writereg(state, GPP_CTRL, 0x80); + if (ret < 0) + return ret; + + /* configure ZL10313 for optimal ADC performance */ + buf[0] = 0x80; + buf[1] = 0xB0; + ret = mt312_write(state, HW_CTRL, buf, 2); + if (ret < 0) + return ret; + + /* enable MPEG output and ADCs */ + ret = mt312_writereg(state, HW_CTRL, 0x00); + if (ret < 0) + return ret; + + ret = mt312_writereg(state, MPEG_CTRL, 0x00); + if (ret < 0) + return ret; + + break; + } + + /* SYS_CLK */ + buf[0] = DIV_ROUND_CLOSEST(state->xtal * state->freq_mult * 2, 1000000); + + /* DISEQC_RATIO */ + buf[1] = DIV_ROUND_CLOSEST(state->xtal, 22000 * 4); + + ret = mt312_write(state, SYS_CLK, buf, sizeof(buf)); + if (ret < 0) + return ret; + + ret = mt312_writereg(state, SNR_THS_HIGH, 0x32); + if (ret < 0) + return ret; + + /* different MOCLK polarity */ + switch (state->id) { + case ID_ZL10313: + buf[0] = 0x33; + break; + default: + buf[0] = 0x53; + break; + } + + ret = mt312_writereg(state, OP_CTRL, buf[0]); + if (ret < 0) + return ret; + + /* TS_SW_LIM */ + buf[0] = 0x8c; + buf[1] = 0x98; + + ret = mt312_write(state, TS_SW_LIM_L, buf, sizeof(buf)); + if (ret < 0) + return ret; + + ret = mt312_writereg(state, CS_SW_LIM, 0x69); + if (ret < 0) + return ret; + + return 0; +} + +static int mt312_send_master_cmd(struct dvb_frontend *fe, + struct dvb_diseqc_master_cmd *c) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 diseqc_mode; + + if ((c->msg_len == 0) || (c->msg_len > sizeof(c->msg))) + return -EINVAL; + + ret = mt312_readreg(state, DISEQC_MODE, &diseqc_mode); + if (ret < 0) + return ret; + + ret = mt312_write(state, (0x80 | DISEQC_INSTR), c->msg, c->msg_len); + if (ret < 0) + return ret; + + ret = mt312_writereg(state, DISEQC_MODE, + (diseqc_mode & 0x40) | ((c->msg_len - 1) << 3) + | 0x04); + if (ret < 0) + return ret; + + /* is there a better way to wait for message to be transmitted */ + msleep(100); + + /* set DISEQC_MODE[2:0] to zero if a return message is expected */ + if (c->msg[0] & 0x02) { + ret = mt312_writereg(state, DISEQC_MODE, (diseqc_mode & 0x40)); + if (ret < 0) + return ret; + } + + return 0; +} + +static int mt312_send_burst(struct dvb_frontend *fe, + const enum fe_sec_mini_cmd c) +{ + struct mt312_state *state = fe->demodulator_priv; + const u8 mini_tab[2] = { 0x02, 0x03 }; + + int ret; + u8 diseqc_mode; + + if (c > SEC_MINI_B) + return -EINVAL; + + ret = mt312_readreg(state, DISEQC_MODE, &diseqc_mode); + if (ret < 0) + return ret; + + ret = mt312_writereg(state, DISEQC_MODE, + (diseqc_mode & 0x40) | mini_tab[c]); + if (ret < 0) + return ret; + + return 0; +} + +static int mt312_set_tone(struct dvb_frontend *fe, + const enum fe_sec_tone_mode t) +{ + struct mt312_state *state = fe->demodulator_priv; + const u8 tone_tab[2] = { 0x01, 0x00 }; + + int ret; + u8 diseqc_mode; + + if (t > SEC_TONE_OFF) + return -EINVAL; + + ret = mt312_readreg(state, DISEQC_MODE, &diseqc_mode); + if (ret < 0) + return ret; + + ret = mt312_writereg(state, DISEQC_MODE, + (diseqc_mode & 0x40) | tone_tab[t]); + if (ret < 0) + return ret; + + return 0; +} + +static int mt312_set_voltage(struct dvb_frontend *fe, + const enum fe_sec_voltage v) +{ + struct mt312_state *state = fe->demodulator_priv; + const u8 volt_tab[3] = { 0x00, 0x40, 0x00 }; + u8 val; + + if (v > SEC_VOLTAGE_OFF) + return -EINVAL; + + val = volt_tab[v]; + if (state->config->voltage_inverted) + val ^= 0x40; + + return mt312_writereg(state, DISEQC_MODE, val); +} + +static int mt312_read_status(struct dvb_frontend *fe, enum fe_status *s) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 status[3]; + + *s = 0; + + ret = mt312_read(state, QPSK_STAT_H, status, sizeof(status)); + if (ret < 0) + return ret; + + dprintk("QPSK_STAT_H: 0x%02x, QPSK_STAT_L: 0x%02x, FEC_STATUS: 0x%02x\n", + status[0], status[1], status[2]); + + if (status[0] & 0xc0) + *s |= FE_HAS_SIGNAL; /* signal noise ratio */ + if (status[0] & 0x04) + *s |= FE_HAS_CARRIER; /* qpsk carrier lock */ + if (status[2] & 0x02) + *s |= FE_HAS_VITERBI; /* viterbi lock */ + if (status[2] & 0x04) + *s |= FE_HAS_SYNC; /* byte align lock */ + if (status[0] & 0x01) + *s |= FE_HAS_LOCK; /* qpsk lock */ + + return 0; +} + +static int mt312_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 buf[3]; + + ret = mt312_read(state, RS_BERCNT_H, buf, 3); + if (ret < 0) + return ret; + + *ber = ((buf[0] << 16) | (buf[1] << 8) | buf[2]) * 64; + + return 0; +} + +static int mt312_read_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 buf[3]; + u16 agc; + s16 err_db; + + ret = mt312_read(state, AGC_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + agc = (buf[0] << 6) | (buf[1] >> 2); + err_db = (s16) (((buf[1] & 0x03) << 14) | buf[2] << 6) >> 6; + + *signal_strength = agc; + + dprintk("agc=%08x err_db=%hd\n", agc, err_db); + + return 0; +} + +static int mt312_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 buf[2]; + + ret = mt312_read(state, M_SNR_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + *snr = 0xFFFF - ((((buf[0] & 0x7f) << 8) | buf[1]) << 1); + + return 0; +} + +static int mt312_read_ucblocks(struct dvb_frontend *fe, u32 *ubc) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 buf[2]; + + ret = mt312_read(state, RS_UBC_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + *ubc = (buf[0] << 8) | buf[1]; + + return 0; +} + +static int mt312_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 buf[5], config_val; + u16 sr; + + const u8 fec_tab[10] = + { 0x00, 0x01, 0x02, 0x04, 0x3f, 0x08, 0x10, 0x20, 0x3f, 0x3f }; + const u8 inv_tab[3] = { 0x00, 0x40, 0x80 }; + + dprintk("%s: Freq %d\n", __func__, p->frequency); + + if ((p->frequency < fe->ops.info.frequency_min_hz / kHz) + || (p->frequency > fe->ops.info.frequency_max_hz / kHz)) + return -EINVAL; + + if (((int)p->inversion < INVERSION_OFF) + || (p->inversion > INVERSION_ON)) + return -EINVAL; + + if ((p->symbol_rate < fe->ops.info.symbol_rate_min) + || (p->symbol_rate > fe->ops.info.symbol_rate_max)) + return -EINVAL; + + if (((int)p->fec_inner < FEC_NONE) + || (p->fec_inner > FEC_AUTO)) + return -EINVAL; + + if ((p->fec_inner == FEC_4_5) + || (p->fec_inner == FEC_8_9)) + return -EINVAL; + + switch (state->id) { + case ID_VP310: + /* For now we will do this only for the VP310. + * It should be better for the mt312 as well, + * but tuning will be slower. ACCJr 09/29/03 + */ + ret = mt312_readreg(state, CONFIG, &config_val); + if (ret < 0) + return ret; + if (p->symbol_rate >= 30000000) { + /* Note that 30MS/s should use 90MHz */ + if (state->freq_mult == 6) { + /* We are running 60MHz */ + state->freq_mult = 9; + ret = mt312_initfe(fe); + if (ret < 0) + return ret; + } + } else { + if (state->freq_mult == 9) { + /* We are running 90MHz */ + state->freq_mult = 6; + ret = mt312_initfe(fe); + if (ret < 0) + return ret; + } + } + break; + + case ID_MT312: + case ID_ZL10313: + break; + + default: + return -EINVAL; + } + + if (fe->ops.tuner_ops.set_params) { + fe->ops.tuner_ops.set_params(fe); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + } + + /* sr = (u16)(sr * 256.0 / 1000000.0) */ + sr = DIV_ROUND_CLOSEST(p->symbol_rate * 4, 15625); + + /* SYM_RATE */ + buf[0] = (sr >> 8) & 0x3f; + buf[1] = (sr >> 0) & 0xff; + + /* VIT_MODE */ + buf[2] = inv_tab[p->inversion] | fec_tab[p->fec_inner]; + + /* QPSK_CTRL */ + buf[3] = 0x40; /* swap I and Q before QPSK demodulation */ + + if (p->symbol_rate < 10000000) + buf[3] |= 0x04; /* use afc mode */ + + /* GO */ + buf[4] = 0x01; + + ret = mt312_write(state, SYM_RATE_H, buf, sizeof(buf)); + if (ret < 0) + return ret; + + ret = mt312_reset(state, 0); + if (ret < 0) + return ret; + + return 0; +} + +static int mt312_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *p) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + + ret = mt312_get_inversion(state, &p->inversion); + if (ret < 0) + return ret; + + ret = mt312_get_symbol_rate(state, &p->symbol_rate); + if (ret < 0) + return ret; + + ret = mt312_get_code_rate(state, &p->fec_inner); + if (ret < 0) + return ret; + + return 0; +} + +static int mt312_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct mt312_state *state = fe->demodulator_priv; + + u8 val = 0x00; + int ret; + + switch (state->id) { + case ID_ZL10313: + ret = mt312_readreg(state, GPP_CTRL, &val); + if (ret < 0) + goto error; + + /* preserve this bit to not accidentally shutdown ADC */ + val &= 0x80; + break; + } + + if (enable) + val |= 0x40; + else + val &= ~0x40; + + ret = mt312_writereg(state, GPP_CTRL, val); + +error: + return ret; +} + +static int mt312_sleep(struct dvb_frontend *fe) +{ + struct mt312_state *state = fe->demodulator_priv; + int ret; + u8 config; + + /* reset all registers to defaults */ + ret = mt312_reset(state, 1); + if (ret < 0) + return ret; + + if (state->id == ID_ZL10313) { + /* reset ADC */ + ret = mt312_writereg(state, GPP_CTRL, 0x00); + if (ret < 0) + return ret; + + /* full shutdown of ADCs, mpeg bus tristated */ + ret = mt312_writereg(state, HW_CTRL, 0x0d); + if (ret < 0) + return ret; + } + + ret = mt312_readreg(state, CONFIG, &config); + if (ret < 0) + return ret; + + /* enter standby */ + ret = mt312_writereg(state, CONFIG, config & 0x7f); + if (ret < 0) + return ret; + + return 0; +} + +static int mt312_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *fesettings) +{ + fesettings->min_delay_ms = 50; + fesettings->step_size = 0; + fesettings->max_drift = 0; + return 0; +} + +static void mt312_release(struct dvb_frontend *fe) +{ + struct mt312_state *state = fe->demodulator_priv; + kfree(state); +} + +#define MT312_SYS_CLK 90000000UL /* 90 MHz */ +static const struct dvb_frontend_ops mt312_ops = { + .delsys = { SYS_DVBS }, + .info = { + .name = "Zarlink ???? DVB-S", + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz, + /* FIXME: adjust freq to real used xtal */ + .frequency_stepsize_hz = MT312_PLL_CLK / 128, + .symbol_rate_min = MT312_SYS_CLK / 128, /* FIXME as above */ + .symbol_rate_max = MT312_SYS_CLK / 2, + .caps = + FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | + FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | + FE_CAN_FEC_AUTO | FE_CAN_QPSK | FE_CAN_MUTE_TS | + FE_CAN_RECOVER + }, + + .release = mt312_release, + + .init = mt312_initfe, + .sleep = mt312_sleep, + .i2c_gate_ctrl = mt312_i2c_gate_ctrl, + + .set_frontend = mt312_set_frontend, + .get_frontend = mt312_get_frontend, + .get_tune_settings = mt312_get_tune_settings, + + .read_status = mt312_read_status, + .read_ber = mt312_read_ber, + .read_signal_strength = mt312_read_signal_strength, + .read_snr = mt312_read_snr, + .read_ucblocks = mt312_read_ucblocks, + + .diseqc_send_master_cmd = mt312_send_master_cmd, + .diseqc_send_burst = mt312_send_burst, + .set_tone = mt312_set_tone, + .set_voltage = mt312_set_voltage, +}; + +struct dvb_frontend *mt312_attach(const struct mt312_config *config, + struct i2c_adapter *i2c) +{ + struct mt312_state *state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct mt312_state), GFP_KERNEL); + if (state == NULL) + goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + + /* check if the demod is there */ + if (mt312_readreg(state, ID, &state->id) < 0) + goto error; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, &mt312_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + + switch (state->id) { + case ID_VP310: + strscpy(state->frontend.ops.info.name, "Zarlink VP310 DVB-S", + sizeof(state->frontend.ops.info.name)); + state->xtal = MT312_PLL_CLK; + state->freq_mult = 9; + break; + case ID_MT312: + strscpy(state->frontend.ops.info.name, "Zarlink MT312 DVB-S", + sizeof(state->frontend.ops.info.name)); + state->xtal = MT312_PLL_CLK; + state->freq_mult = 6; + break; + case ID_ZL10313: + strscpy(state->frontend.ops.info.name, "Zarlink ZL10313 DVB-S", + sizeof(state->frontend.ops.info.name)); + state->xtal = MT312_PLL_CLK_10_111; + state->freq_mult = 9; + break; + default: + printk(KERN_WARNING "Only Zarlink VP310/MT312/ZL10313 are supported chips.\n"); + goto error; + } + + return &state->frontend; + +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(mt312_attach); + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); + +MODULE_DESCRIPTION("Zarlink VP310/MT312/ZL10313 DVB-S Demodulator driver"); +MODULE_AUTHOR("Andreas Oberritter "); +MODULE_AUTHOR("Matthias Schwarzott "); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3