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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/media/dvb-frontends/lgs8gl5.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski:
"Core:
- Add dedicated kmem_cache for typical/small skb->head, avoid having
to access struct page at kfree time, and improve memory use.
- Introduce sysctl to set default RPS configuration for new netdevs.
- Define Netlink protocol specification format which can be used to
describe messages used by each family and auto-generate parsers.
Add tools for generating kernel data structures and uAPI headers.
- Expose all net/core sysctls inside netns.
- Remove 4s sleep in netpoll if carrier is instantly detected on
boot.
- Add configurable limit of MDB entries per port, and port-vlan.
- Continue populating drop reasons throughout the stack.
- Retire a handful of legacy Qdiscs and classifiers.
Protocols:
- Support IPv4 big TCP (TSO frames larger than 64kB).
- Add IP_LOCAL_PORT_RANGE socket option, to control local port range
on socket by socket basis.
- Track and report in procfs number of MPTCP sockets used.
- Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
manager.
- IPv6: don't check net.ipv6.route.max_size and rely on garbage
collection to free memory (similarly to IPv4).
- Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).
- ICMP: add per-rate limit counters.
- Add support for user scanning requests in ieee802154.
- Remove static WEP support.
- Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
reporting.
- WiFi 7 EHT channel puncturing support (client & AP).
BPF:
- Add a rbtree data structure following the "next-gen data structure"
precedent set by recently added linked list, that is, by using
kfunc + kptr instead of adding a new BPF map type.
- Expose XDP hints via kfuncs with initial support for RX hash and
timestamp metadata.
- Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
better support decap on GRE tunnel devices not operating in collect
metadata.
- Improve x86 JIT's codegen for PROBE_MEM runtime error checks.
- Remove the need for trace_printk_lock for bpf_trace_printk and
bpf_trace_vprintk helpers.
- Extend libbpf's bpf_tracing.h support for tracing arguments of
kprobes/uprobes and syscall as a special case.
- Significantly reduce the search time for module symbols by
livepatch and BPF.
- Enable cpumasks to be used as kptrs, which is useful for tracing
programs tracking which tasks end up running on which CPUs in
different time intervals.
- Add support for BPF trampoline on s390x and riscv64.
- Add capability to export the XDP features supported by the NIC.
- Add __bpf_kfunc tag for marking kernel functions as kfuncs.
- Add cgroup.memory=nobpf kernel parameter option to disable BPF
memory accounting for container environments.
Netfilter:
- Remove the CLUSTERIP target. It has been marked as obsolete for
years, and we still have WARN splats wrt races of the out-of-band
/proc interface installed by this target.
- Add 'destroy' commands to nf_tables. They are identical to the
existing 'delete' commands, but do not return an error if the
referenced object (set, chain, rule...) did not exist.
Driver API:
- Improve cpumask_local_spread() locality to help NICs set the right
IRQ affinity on AMD platforms.
- Separate C22 and C45 MDIO bus transactions more clearly.
- Introduce new DCB table to control DSCP rewrite on egress.
- Support configuration of Physical Layer Collision Avoidance (PLCA)
Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
shared medium Ethernet.
- Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
preemption of low priority frames by high priority frames.
- Add support for controlling MACSec offload using netlink SET.
- Rework devlink instance refcounts to allow registration and
de-registration under the instance lock. Split the code into
multiple files, drop some of the unnecessarily granular locks and
factor out common parts of netlink operation handling.
- Add TX frame aggregation parameters (for USB drivers).
- Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
messages with notifications for debug.
- Allow offloading of UDP NEW connections via act_ct.
- Add support for per action HW stats in TC.
- Support hardware miss to TC action (continue processing in SW from
a specific point in the action chain).
- Warn if old Wireless Extension user space interface is used with
modern cfg80211/mac80211 drivers. Do not support Wireless
Extensions for Wi-Fi 7 devices at all. Everyone should switch to
using nl80211 interface instead.
- Improve the CAN bit timing configuration. Use extack to return
error messages directly to user space, update the SJW handling,
including the definition of a new default value that will benefit
CAN-FD controllers, by increasing their oscillator tolerance.
New hardware / drivers:
- Ethernet:
- nVidia BlueField-3 support (control traffic driver)
- Ethernet support for imx93 SoCs
- Motorcomm yt8531 gigabit Ethernet PHY
- onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
- Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
- Amlogic gxl MDIO mux
- WiFi:
- RealTek RTL8188EU (rtl8xxxu)
- Qualcomm Wi-Fi 7 devices (ath12k)
- CAN:
- Renesas R-Car V4H
Drivers:
- Bluetooth:
- Set Per Platform Antenna Gain (PPAG) for Intel controllers.
- Ethernet NICs:
- Intel (1G, igc):
- support TSN / Qbv / packet scheduling features of i226 model
- Intel (100G, ice):
- use GNSS subsystem instead of TTY
- multi-buffer XDP support
- extend support for GPIO pins to E823 devices
- nVidia/Mellanox:
- update the shared buffer configuration on PFC commands
- implement PTP adjphase function for HW offset control
- TC support for Geneve and GRE with VF tunnel offload
- more efficient crypto key management method
- multi-port eswitch support
- Netronome/Corigine:
- add DCB IEEE support
- support IPsec offloading for NFP3800
- Freescale/NXP (enetc):
- support XDP_REDIRECT for XDP non-linear buffers
- improve reconfig, avoid link flap and waiting for idle
- support MAC Merge layer
- Other NICs:
- sfc/ef100: add basic devlink support for ef100
- ionic: rx_push mode operation (writing descriptors via MMIO)
- bnxt: use the auxiliary bus abstraction for RDMA
- r8169: disable ASPM and reset bus in case of tx timeout
- cpsw: support QSGMII mode for J721e CPSW9G
- cpts: support pulse-per-second output
- ngbe: add an mdio bus driver
- usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
- r8152: handle devices with FW with NCM support
- amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
- virtio-net: support multi buffer XDP
- virtio/vsock: replace virtio_vsock_pkt with sk_buff
- tsnep: XDP support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add support for latency TLV (in FW control messages)
- Microchip (sparx5):
- separate explicit and implicit traffic forwarding rules, make
the implicit rules always active
- add support for egress DSCP rewrite
- IS0 VCAP support (Ingress Classification)
- IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
etc.)
- ES2 VCAP support (Egress Access Control)
- support for Per-Stream Filtering and Policing (802.1Q,
8.6.5.1)
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- add MAB (port auth) offload support
- enable PTP receive for mv88e6390
- NXP (ocelot):
- support MAC Merge layer
- support for the the vsc7512 internal copper phys
- Microchip:
- lan9303: convert to PHYLINK
- lan966x: support TC flower filter statistics
- lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
- lan937x: support Credit Based Shaper configuration
- ksz9477: support Energy Efficient Ethernet
- other:
- qca8k: convert to regmap read/write API, use bulk operations
- rswitch: Improve TX timestamp accuracy
- Intel WiFi (iwlwifi):
- EHT (Wi-Fi 7) rate reporting
- STEP equalizer support: transfer some STEP (connection to radio
on platforms with integrated wifi) related parameters from the
BIOS to the firmware.
- Qualcomm 802.11ax WiFi (ath11k):
- IPQ5018 support
- Fine Timing Measurement (FTM) responder role support
- channel 177 support
- MediaTek WiFi (mt76):
- per-PHY LED support
- mt7996: EHT (Wi-Fi 7) support
- Wireless Ethernet Dispatch (WED) reset support
- switch to using page pool allocator
- RealTek WiFi (rtw89):
- support new version of Bluetooth co-existance
- Mobile:
- rmnet: support TX aggregation"
* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
page_pool: add a comment explaining the fragment counter usage
net: ethtool: fix __ethtool_dev_mm_supported() implementation
ethtool: pse-pd: Fix double word in comments
xsk: add linux/vmalloc.h to xsk.c
sefltests: netdevsim: wait for devlink instance after netns removal
selftest: fib_tests: Always cleanup before exit
net/mlx5e: Align IPsec ASO result memory to be as required by hardware
net/mlx5e: TC, Set CT miss to the specific ct action instance
net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
net/mlx5: Refactor tc miss handling to a single function
net/mlx5: Kconfig: Make tc offload depend on tc skb extension
net/sched: flower: Support hardware miss to tc action
net/sched: flower: Move filter handle initialization earlier
net/sched: cls_api: Support hardware miss to tc action
net/sched: Rename user cookie and act cookie
sfc: fix builds without CONFIG_RTC_LIB
sfc: clean up some inconsistent indentings
net/mlx4_en: Introduce flexible array to silence overflow warning
net: lan966x: Fix possible deadlock inside PTP
net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
...
Diffstat (limited to 'drivers/media/dvb-frontends/lgs8gl5.c')
-rw-r--r-- | drivers/media/dvb-frontends/lgs8gl5.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/lgs8gl5.c b/drivers/media/dvb-frontends/lgs8gl5.c new file mode 100644 index 000000000..872abb70d --- /dev/null +++ b/drivers/media/dvb-frontends/lgs8gl5.c @@ -0,0 +1,441 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + Legend Silicon LGS-8GL5 DMB-TH OFDM demodulator driver + + Copyright (C) 2008 Sirius International (Hong Kong) Limited + Timothy Lee <timothy.lee@siriushk.com> + + +*/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <media/dvb_frontend.h> +#include "lgs8gl5.h" + + +#define REG_RESET 0x02 +#define REG_RESET_OFF 0x01 +#define REG_03 0x03 +#define REG_04 0x04 +#define REG_07 0x07 +#define REG_09 0x09 +#define REG_0A 0x0a +#define REG_0B 0x0b +#define REG_0C 0x0c +#define REG_37 0x37 +#define REG_STRENGTH 0x4b +#define REG_STRENGTH_MASK 0x7f +#define REG_STRENGTH_CARRIER 0x80 +#define REG_INVERSION 0x7c +#define REG_INVERSION_ON 0x80 +#define REG_7D 0x7d +#define REG_7E 0x7e +#define REG_A2 0xa2 +#define REG_STATUS 0xa4 +#define REG_STATUS_SYNC 0x04 +#define REG_STATUS_LOCK 0x01 + + +struct lgs8gl5_state { + struct i2c_adapter *i2c; + const struct lgs8gl5_config *config; + struct dvb_frontend frontend; +}; + + +static int debug; +#define dprintk(args...) \ + do { \ + if (debug) \ + printk(KERN_DEBUG "lgs8gl5: " args); \ + } while (0) + + +/* Writes into demod's register */ +static int +lgs8gl5_write_reg(struct lgs8gl5_state *state, u8 reg, u8 data) +{ + int ret; + u8 buf[] = {reg, data}; + struct i2c_msg msg = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf, + .len = 2 + }; + + ret = i2c_transfer(state->i2c, &msg, 1); + if (ret != 1) + dprintk("%s: error (reg=0x%02x, val=0x%02x, ret=%i)\n", + __func__, reg, data, ret); + return (ret != 1) ? -1 : 0; +} + + +/* Reads from demod's register */ +static int +lgs8gl5_read_reg(struct lgs8gl5_state *state, u8 reg) +{ + int ret; + u8 b0[] = {reg}; + u8 b1[] = {0}; + struct i2c_msg msg[2] = { + { + .addr = state->config->demod_address, + .flags = 0, + .buf = b0, + .len = 1 + }, + { + .addr = state->config->demod_address, + .flags = I2C_M_RD, + .buf = b1, + .len = 1 + } + }; + + ret = i2c_transfer(state->i2c, msg, 2); + if (ret != 2) + return -EIO; + + return b1[0]; +} + + +static int +lgs8gl5_update_reg(struct lgs8gl5_state *state, u8 reg, u8 data) +{ + lgs8gl5_read_reg(state, reg); + lgs8gl5_write_reg(state, reg, data); + return 0; +} + + +/* Writes into alternate device's register */ +/* TODO: Find out what that device is for! */ +static int +lgs8gl5_update_alt_reg(struct lgs8gl5_state *state, u8 reg, u8 data) +{ + int ret; + u8 b0[] = {reg}; + u8 b1[] = {0}; + u8 b2[] = {reg, data}; + struct i2c_msg msg[3] = { + { + .addr = state->config->demod_address + 2, + .flags = 0, + .buf = b0, + .len = 1 + }, + { + .addr = state->config->demod_address + 2, + .flags = I2C_M_RD, + .buf = b1, + .len = 1 + }, + { + .addr = state->config->demod_address + 2, + .flags = 0, + .buf = b2, + .len = 2 + }, + }; + + ret = i2c_transfer(state->i2c, msg, 3); + return (ret != 3) ? -1 : 0; +} + + +static void +lgs8gl5_soft_reset(struct lgs8gl5_state *state) +{ + u8 val; + + dprintk("%s\n", __func__); + + val = lgs8gl5_read_reg(state, REG_RESET); + lgs8gl5_write_reg(state, REG_RESET, val & ~REG_RESET_OFF); + lgs8gl5_write_reg(state, REG_RESET, val | REG_RESET_OFF); + msleep(5); +} + + +/* Starts demodulation */ +static void +lgs8gl5_start_demod(struct lgs8gl5_state *state) +{ + u8 val; + int n; + + dprintk("%s\n", __func__); + + lgs8gl5_update_alt_reg(state, 0xc2, 0x28); + lgs8gl5_soft_reset(state); + lgs8gl5_update_reg(state, REG_07, 0x10); + lgs8gl5_update_reg(state, REG_07, 0x10); + lgs8gl5_write_reg(state, REG_09, 0x0e); + lgs8gl5_write_reg(state, REG_0A, 0xe5); + lgs8gl5_write_reg(state, REG_0B, 0x35); + lgs8gl5_write_reg(state, REG_0C, 0x30); + + lgs8gl5_update_reg(state, REG_03, 0x00); + lgs8gl5_update_reg(state, REG_7E, 0x01); + lgs8gl5_update_alt_reg(state, 0xc5, 0x00); + lgs8gl5_update_reg(state, REG_04, 0x02); + lgs8gl5_update_reg(state, REG_37, 0x01); + lgs8gl5_soft_reset(state); + + /* Wait for carrier */ + for (n = 0; n < 10; n++) { + val = lgs8gl5_read_reg(state, REG_STRENGTH); + dprintk("Wait for carrier[%d] 0x%02X\n", n, val); + if (val & REG_STRENGTH_CARRIER) + break; + msleep(4); + } + if (!(val & REG_STRENGTH_CARRIER)) + return; + + /* Wait for lock */ + for (n = 0; n < 20; n++) { + val = lgs8gl5_read_reg(state, REG_STATUS); + dprintk("Wait for lock[%d] 0x%02X\n", n, val); + if (val & REG_STATUS_LOCK) + break; + msleep(12); + } + if (!(val & REG_STATUS_LOCK)) + return; + + lgs8gl5_write_reg(state, REG_7D, lgs8gl5_read_reg(state, REG_A2)); + lgs8gl5_soft_reset(state); +} + + +static int +lgs8gl5_init(struct dvb_frontend *fe) +{ + struct lgs8gl5_state *state = fe->demodulator_priv; + + dprintk("%s\n", __func__); + + lgs8gl5_update_alt_reg(state, 0xc2, 0x28); + lgs8gl5_soft_reset(state); + lgs8gl5_update_reg(state, REG_07, 0x10); + lgs8gl5_update_reg(state, REG_07, 0x10); + lgs8gl5_write_reg(state, REG_09, 0x0e); + lgs8gl5_write_reg(state, REG_0A, 0xe5); + lgs8gl5_write_reg(state, REG_0B, 0x35); + lgs8gl5_write_reg(state, REG_0C, 0x30); + + return 0; +} + + +static int +lgs8gl5_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct lgs8gl5_state *state = fe->demodulator_priv; + u8 level = lgs8gl5_read_reg(state, REG_STRENGTH); + u8 flags = lgs8gl5_read_reg(state, REG_STATUS); + + *status = 0; + + if ((level & REG_STRENGTH_MASK) > 0) + *status |= FE_HAS_SIGNAL; + if (level & REG_STRENGTH_CARRIER) + *status |= FE_HAS_CARRIER; + if (flags & REG_STATUS_SYNC) + *status |= FE_HAS_SYNC; + if (flags & REG_STATUS_LOCK) + *status |= FE_HAS_LOCK; + + return 0; +} + + +static int +lgs8gl5_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + *ber = 0; + + return 0; +} + + +static int +lgs8gl5_read_signal_strength(struct dvb_frontend *fe, u16 *signal_strength) +{ + struct lgs8gl5_state *state = fe->demodulator_priv; + u8 level = lgs8gl5_read_reg(state, REG_STRENGTH); + *signal_strength = (level & REG_STRENGTH_MASK) << 8; + + return 0; +} + + +static int +lgs8gl5_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct lgs8gl5_state *state = fe->demodulator_priv; + u8 level = lgs8gl5_read_reg(state, REG_STRENGTH); + *snr = (level & REG_STRENGTH_MASK) << 8; + + return 0; +} + + +static int +lgs8gl5_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + *ucblocks = 0; + + return 0; +} + + +static int +lgs8gl5_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct lgs8gl5_state *state = fe->demodulator_priv; + + dprintk("%s\n", __func__); + + if (p->bandwidth_hz != 8000000) + 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); + } + + /* lgs8gl5_set_inversion(state, p->inversion); */ + + lgs8gl5_start_demod(state); + + return 0; +} + + +static int +lgs8gl5_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *p) +{ + struct lgs8gl5_state *state = fe->demodulator_priv; + + u8 inv = lgs8gl5_read_reg(state, REG_INVERSION); + + p->inversion = (inv & REG_INVERSION_ON) ? INVERSION_ON : INVERSION_OFF; + + p->code_rate_HP = FEC_1_2; + p->code_rate_LP = FEC_7_8; + p->guard_interval = GUARD_INTERVAL_1_32; + p->transmission_mode = TRANSMISSION_MODE_2K; + p->modulation = QAM_64; + p->hierarchy = HIERARCHY_NONE; + p->bandwidth_hz = 8000000; + + return 0; +} + + +static int +lgs8gl5_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *fesettings) +{ + fesettings->min_delay_ms = 240; + fesettings->step_size = 0; + fesettings->max_drift = 0; + return 0; +} + + +static void +lgs8gl5_release(struct dvb_frontend *fe) +{ + struct lgs8gl5_state *state = fe->demodulator_priv; + kfree(state); +} + + +static const struct dvb_frontend_ops lgs8gl5_ops; + + +struct dvb_frontend* +lgs8gl5_attach(const struct lgs8gl5_config *config, struct i2c_adapter *i2c) +{ + struct lgs8gl5_state *state = NULL; + + dprintk("%s\n", __func__); + + /* Allocate memory for the internal state */ + state = kzalloc(sizeof(struct lgs8gl5_state), GFP_KERNEL); + if (state == NULL) + goto error; + + /* Setup the state */ + state->config = config; + state->i2c = i2c; + + /* Check if the demod is there */ + if (lgs8gl5_read_reg(state, REG_RESET) < 0) + goto error; + + /* Create dvb_frontend */ + memcpy(&state->frontend.ops, &lgs8gl5_ops, + sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(lgs8gl5_attach); + + +static const struct dvb_frontend_ops lgs8gl5_ops = { + .delsys = { SYS_DTMB }, + .info = { + .name = "Legend Silicon LGS-8GL5 DMB-TH", + .frequency_min_hz = 474 * MHz, + .frequency_max_hz = 858 * MHz, + .frequency_stepsize_hz = 10 * kHz, + .caps = FE_CAN_FEC_AUTO | + FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_32 | + FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_BANDWIDTH_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_HIERARCHY_AUTO | + FE_CAN_RECOVER + }, + + .release = lgs8gl5_release, + + .init = lgs8gl5_init, + + .set_frontend = lgs8gl5_set_frontend, + .get_frontend = lgs8gl5_get_frontend, + .get_tune_settings = lgs8gl5_get_tune_settings, + + .read_status = lgs8gl5_read_status, + .read_ber = lgs8gl5_read_ber, + .read_signal_strength = lgs8gl5_read_signal_strength, + .read_snr = lgs8gl5_read_snr, + .read_ucblocks = lgs8gl5_read_ucblocks, +}; + + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); + +MODULE_DESCRIPTION("Legend Silicon LGS-8GL5 DMB-TH Demodulator driver"); +MODULE_AUTHOR("Timothy Lee"); +MODULE_LICENSE("GPL"); |