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/iio/dac/ad5791.c | 466 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 466 insertions(+) create mode 100644 drivers/iio/dac/ad5791.c (limited to 'drivers/iio/dac/ad5791.c') diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c new file mode 100644 index 000000000..a4167454d --- /dev/null +++ b/drivers/iio/dac/ad5791.c @@ -0,0 +1,466 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AD5760, AD5780, AD5781, AD5790, AD5791 Voltage Output Digital to Analog + * Converter + * + * Copyright 2011 Analog Devices Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define AD5791_DAC_MASK GENMASK(19, 0) + +#define AD5791_CMD_READ BIT(23) +#define AD5791_CMD_WRITE 0 +#define AD5791_ADDR(addr) ((addr) << 20) + +/* Registers */ +#define AD5791_ADDR_NOOP 0 +#define AD5791_ADDR_DAC0 1 +#define AD5791_ADDR_CTRL 2 +#define AD5791_ADDR_CLRCODE 3 +#define AD5791_ADDR_SW_CTRL 4 + +/* Control Register */ +#define AD5791_CTRL_RBUF BIT(1) +#define AD5791_CTRL_OPGND BIT(2) +#define AD5791_CTRL_DACTRI BIT(3) +#define AD5791_CTRL_BIN2SC BIT(4) +#define AD5791_CTRL_SDODIS BIT(5) +#define AD5761_CTRL_LINCOMP(x) ((x) << 6) + +#define AD5791_LINCOMP_0_10 0 +#define AD5791_LINCOMP_10_12 1 +#define AD5791_LINCOMP_12_16 2 +#define AD5791_LINCOMP_16_19 3 +#define AD5791_LINCOMP_19_20 12 + +#define AD5780_LINCOMP_0_10 0 +#define AD5780_LINCOMP_10_20 12 + +/* Software Control Register */ +#define AD5791_SWCTRL_LDAC BIT(0) +#define AD5791_SWCTRL_CLR BIT(1) +#define AD5791_SWCTRL_RESET BIT(2) + +#define AD5791_DAC_PWRDN_6K 0 +#define AD5791_DAC_PWRDN_3STATE 1 + +/** + * struct ad5791_chip_info - chip specific information + * @get_lin_comp: function pointer to the device specific function + */ + +struct ad5791_chip_info { + int (*get_lin_comp) (unsigned int span); +}; + +/** + * struct ad5791_state - driver instance specific data + * @spi: spi_device + * @reg_vdd: positive supply regulator + * @reg_vss: negative supply regulator + * @chip_info: chip model specific constants + * @vref_mv: actual reference voltage used + * @vref_neg_mv: voltage of the negative supply + * @ctrl: control register cache + * @pwr_down_mode: current power down mode + * @pwr_down: true if device is powered down + * @data: spi transfer buffers + */ +struct ad5791_state { + struct spi_device *spi; + struct regulator *reg_vdd; + struct regulator *reg_vss; + const struct ad5791_chip_info *chip_info; + unsigned short vref_mv; + unsigned int vref_neg_mv; + unsigned ctrl; + unsigned pwr_down_mode; + bool pwr_down; + + union { + __be32 d32; + u8 d8[4]; + } data[3] __aligned(IIO_DMA_MINALIGN); +}; + +enum ad5791_supported_device_ids { + ID_AD5760, + ID_AD5780, + ID_AD5781, + ID_AD5791, +}; + +static int ad5791_spi_write(struct ad5791_state *st, u8 addr, u32 val) +{ + st->data[0].d32 = cpu_to_be32(AD5791_CMD_WRITE | + AD5791_ADDR(addr) | + (val & AD5791_DAC_MASK)); + + return spi_write(st->spi, &st->data[0].d8[1], 3); +} + +static int ad5791_spi_read(struct ad5791_state *st, u8 addr, u32 *val) +{ + int ret; + struct spi_transfer xfers[] = { + { + .tx_buf = &st->data[0].d8[1], + .bits_per_word = 8, + .len = 3, + .cs_change = 1, + }, { + .tx_buf = &st->data[1].d8[1], + .rx_buf = &st->data[2].d8[1], + .bits_per_word = 8, + .len = 3, + }, + }; + + st->data[0].d32 = cpu_to_be32(AD5791_CMD_READ | + AD5791_ADDR(addr)); + st->data[1].d32 = cpu_to_be32(AD5791_ADDR(AD5791_ADDR_NOOP)); + + ret = spi_sync_transfer(st->spi, xfers, ARRAY_SIZE(xfers)); + + *val = be32_to_cpu(st->data[2].d32); + + return ret; +} + +static const char * const ad5791_powerdown_modes[] = { + "6kohm_to_gnd", + "three_state", +}; + +static int ad5791_get_powerdown_mode(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + struct ad5791_state *st = iio_priv(indio_dev); + + return st->pwr_down_mode; +} + +static int ad5791_set_powerdown_mode(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, unsigned int mode) +{ + struct ad5791_state *st = iio_priv(indio_dev); + + st->pwr_down_mode = mode; + + return 0; +} + +static const struct iio_enum ad5791_powerdown_mode_enum = { + .items = ad5791_powerdown_modes, + .num_items = ARRAY_SIZE(ad5791_powerdown_modes), + .get = ad5791_get_powerdown_mode, + .set = ad5791_set_powerdown_mode, +}; + +static ssize_t ad5791_read_dac_powerdown(struct iio_dev *indio_dev, + uintptr_t private, const struct iio_chan_spec *chan, char *buf) +{ + struct ad5791_state *st = iio_priv(indio_dev); + + return sysfs_emit(buf, "%d\n", st->pwr_down); +} + +static ssize_t ad5791_write_dac_powerdown(struct iio_dev *indio_dev, + uintptr_t private, const struct iio_chan_spec *chan, const char *buf, + size_t len) +{ + bool pwr_down; + int ret; + struct ad5791_state *st = iio_priv(indio_dev); + + ret = kstrtobool(buf, &pwr_down); + if (ret) + return ret; + + if (!pwr_down) { + st->ctrl &= ~(AD5791_CTRL_OPGND | AD5791_CTRL_DACTRI); + } else { + if (st->pwr_down_mode == AD5791_DAC_PWRDN_6K) + st->ctrl |= AD5791_CTRL_OPGND; + else if (st->pwr_down_mode == AD5791_DAC_PWRDN_3STATE) + st->ctrl |= AD5791_CTRL_DACTRI; + } + st->pwr_down = pwr_down; + + ret = ad5791_spi_write(st, AD5791_ADDR_CTRL, st->ctrl); + + return ret ? ret : len; +} + +static int ad5791_get_lin_comp(unsigned int span) +{ + if (span <= 10000) + return AD5791_LINCOMP_0_10; + else if (span <= 12000) + return AD5791_LINCOMP_10_12; + else if (span <= 16000) + return AD5791_LINCOMP_12_16; + else if (span <= 19000) + return AD5791_LINCOMP_16_19; + else + return AD5791_LINCOMP_19_20; +} + +static int ad5780_get_lin_comp(unsigned int span) +{ + if (span <= 10000) + return AD5780_LINCOMP_0_10; + else + return AD5780_LINCOMP_10_20; +} +static const struct ad5791_chip_info ad5791_chip_info_tbl[] = { + [ID_AD5760] = { + .get_lin_comp = ad5780_get_lin_comp, + }, + [ID_AD5780] = { + .get_lin_comp = ad5780_get_lin_comp, + }, + [ID_AD5781] = { + .get_lin_comp = ad5791_get_lin_comp, + }, + [ID_AD5791] = { + .get_lin_comp = ad5791_get_lin_comp, + }, +}; + +static int ad5791_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, + int *val2, + long m) +{ + struct ad5791_state *st = iio_priv(indio_dev); + u64 val64; + int ret; + + switch (m) { + case IIO_CHAN_INFO_RAW: + ret = ad5791_spi_read(st, chan->address, val); + if (ret) + return ret; + *val &= AD5791_DAC_MASK; + *val >>= chan->scan_type.shift; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + *val = st->vref_mv; + *val2 = (1 << chan->scan_type.realbits) - 1; + return IIO_VAL_FRACTIONAL; + case IIO_CHAN_INFO_OFFSET: + val64 = (((u64)st->vref_neg_mv) << chan->scan_type.realbits); + do_div(val64, st->vref_mv); + *val = -val64; + return IIO_VAL_INT; + default: + return -EINVAL; + } + +}; + +static const struct iio_chan_spec_ext_info ad5791_ext_info[] = { + { + .name = "powerdown", + .shared = IIO_SHARED_BY_TYPE, + .read = ad5791_read_dac_powerdown, + .write = ad5791_write_dac_powerdown, + }, + IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, + &ad5791_powerdown_mode_enum), + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5791_powerdown_mode_enum), + { }, +}; + +#define AD5791_CHAN(bits, _shift) { \ + .type = IIO_VOLTAGE, \ + .output = 1, \ + .indexed = 1, \ + .address = AD5791_ADDR_DAC0, \ + .channel = 0, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_OFFSET), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = (bits), \ + .storagebits = 24, \ + .shift = (_shift), \ + }, \ + .ext_info = ad5791_ext_info, \ +} + +static const struct iio_chan_spec ad5791_channels[] = { + [ID_AD5760] = AD5791_CHAN(16, 4), + [ID_AD5780] = AD5791_CHAN(18, 2), + [ID_AD5781] = AD5791_CHAN(18, 2), + [ID_AD5791] = AD5791_CHAN(20, 0) +}; + +static int ad5791_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, + int val2, + long mask) +{ + struct ad5791_state *st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + val &= GENMASK(chan->scan_type.realbits - 1, 0); + val <<= chan->scan_type.shift; + + return ad5791_spi_write(st, chan->address, val); + + default: + return -EINVAL; + } +} + +static const struct iio_info ad5791_info = { + .read_raw = &ad5791_read_raw, + .write_raw = &ad5791_write_raw, +}; + +static int ad5791_probe(struct spi_device *spi) +{ + struct ad5791_platform_data *pdata = spi->dev.platform_data; + struct iio_dev *indio_dev; + struct ad5791_state *st; + int ret, pos_voltage_uv = 0, neg_voltage_uv = 0; + + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); + if (!indio_dev) + return -ENOMEM; + st = iio_priv(indio_dev); + st->reg_vdd = devm_regulator_get(&spi->dev, "vdd"); + if (!IS_ERR(st->reg_vdd)) { + ret = regulator_enable(st->reg_vdd); + if (ret) + return ret; + + ret = regulator_get_voltage(st->reg_vdd); + if (ret < 0) + goto error_disable_reg_pos; + + pos_voltage_uv = ret; + } + + st->reg_vss = devm_regulator_get(&spi->dev, "vss"); + if (!IS_ERR(st->reg_vss)) { + ret = regulator_enable(st->reg_vss); + if (ret) + goto error_disable_reg_pos; + + ret = regulator_get_voltage(st->reg_vss); + if (ret < 0) + goto error_disable_reg_neg; + + neg_voltage_uv = ret; + } + + st->pwr_down = true; + st->spi = spi; + + if (!IS_ERR(st->reg_vss) && !IS_ERR(st->reg_vdd)) { + st->vref_mv = (pos_voltage_uv + neg_voltage_uv) / 1000; + st->vref_neg_mv = neg_voltage_uv / 1000; + } else if (pdata) { + st->vref_mv = pdata->vref_pos_mv + pdata->vref_neg_mv; + st->vref_neg_mv = pdata->vref_neg_mv; + } else { + dev_warn(&spi->dev, "reference voltage unspecified\n"); + } + + ret = ad5791_spi_write(st, AD5791_ADDR_SW_CTRL, AD5791_SWCTRL_RESET); + if (ret) + goto error_disable_reg_neg; + + st->chip_info = &ad5791_chip_info_tbl[spi_get_device_id(spi) + ->driver_data]; + + + st->ctrl = AD5761_CTRL_LINCOMP(st->chip_info->get_lin_comp(st->vref_mv)) + | ((pdata && pdata->use_rbuf_gain2) ? 0 : AD5791_CTRL_RBUF) | + AD5791_CTRL_BIN2SC; + + ret = ad5791_spi_write(st, AD5791_ADDR_CTRL, st->ctrl | + AD5791_CTRL_OPGND | AD5791_CTRL_DACTRI); + if (ret) + goto error_disable_reg_neg; + + spi_set_drvdata(spi, indio_dev); + indio_dev->info = &ad5791_info; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels + = &ad5791_channels[spi_get_device_id(spi)->driver_data]; + indio_dev->num_channels = 1; + indio_dev->name = spi_get_device_id(st->spi)->name; + ret = iio_device_register(indio_dev); + if (ret) + goto error_disable_reg_neg; + + return 0; + +error_disable_reg_neg: + if (!IS_ERR(st->reg_vss)) + regulator_disable(st->reg_vss); +error_disable_reg_pos: + if (!IS_ERR(st->reg_vdd)) + regulator_disable(st->reg_vdd); + return ret; +} + +static void ad5791_remove(struct spi_device *spi) +{ + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad5791_state *st = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + if (!IS_ERR(st->reg_vdd)) + regulator_disable(st->reg_vdd); + + if (!IS_ERR(st->reg_vss)) + regulator_disable(st->reg_vss); +} + +static const struct spi_device_id ad5791_id[] = { + {"ad5760", ID_AD5760}, + {"ad5780", ID_AD5780}, + {"ad5781", ID_AD5781}, + {"ad5790", ID_AD5791}, + {"ad5791", ID_AD5791}, + {} +}; +MODULE_DEVICE_TABLE(spi, ad5791_id); + +static struct spi_driver ad5791_driver = { + .driver = { + .name = "ad5791", + }, + .probe = ad5791_probe, + .remove = ad5791_remove, + .id_table = ad5791_id, +}; +module_spi_driver(ad5791_driver); + +MODULE_AUTHOR("Michael Hennerich "); +MODULE_DESCRIPTION("Analog Devices AD5760/AD5780/AD5781/AD5790/AD5791 DAC"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3