123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947194819491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971 |
- // SPDX-License-Identifier: GPL-2.0
- /*
- * MacBook (Pro) SPI keyboard and touchpad driver
- *
- * Copyright (c) 2015-2018 Federico Lorenzi
- * Copyright (c) 2017-2018 Ronald Tschalär
- */
- /*
- * The keyboard and touchpad controller on the MacBookAir6, MacBookPro12,
- * MacBook8 and newer can be driven either by USB or SPI. However the USB
- * pins are only connected on the MacBookAir6 and 7 and the MacBookPro12.
- * All others need this driver. The interface is selected using ACPI methods:
- *
- * * UIEN ("USB Interface Enable"): If invoked with argument 1, disables SPI
- * and enables USB. If invoked with argument 0, disables USB.
- * * UIST ("USB Interface Status"): Returns 1 if USB is enabled, 0 otherwise.
- * * SIEN ("SPI Interface Enable"): If invoked with argument 1, disables USB
- * and enables SPI. If invoked with argument 0, disables SPI.
- * * SIST ("SPI Interface Status"): Returns 1 if SPI is enabled, 0 otherwise.
- * * ISOL: Resets the four GPIO pins used for SPI. Intended to be invoked with
- * argument 1, then once more with argument 0.
- *
- * UIEN and UIST are only provided on models where the USB pins are connected.
- *
- * SPI-based Protocol
- * ------------------
- *
- * The device and driver exchange messages (struct message); each message is
- * encapsulated in one or more packets (struct spi_packet). There are two types
- * of exchanges: reads, and writes. A read is signaled by a GPE, upon which one
- * message can be read from the device. A write exchange consists of writing a
- * command message, immediately reading a short status packet, and then, upon
- * receiving a GPE, reading the response message. Write exchanges cannot be
- * interleaved, i.e. a new write exchange must not be started till the previous
- * write exchange is complete. Whether a received message is part of a read or
- * write exchange is indicated in the encapsulating packet's flags field.
- *
- * A single message may be too large to fit in a single packet (which has a
- * fixed, 256-byte size). In that case it will be split over multiple,
- * consecutive packets.
- */
- #include <linux/acpi.h>
- #include <linux/crc16.h>
- #include <linux/debugfs.h>
- #include <linux/delay.h>
- #include <linux/efi.h>
- #include <linux/input.h>
- #include <linux/input/mt.h>
- #include <linux/ktime.h>
- #include <linux/leds.h>
- #include <linux/module.h>
- #include <linux/spinlock.h>
- #include <linux/spi/spi.h>
- #include <linux/wait.h>
- #include <linux/workqueue.h>
- #include <asm/barrier.h>
- #include <asm/unaligned.h>
- #define CREATE_TRACE_POINTS
- #include "applespi.h"
- #include "applespi_trace.h"
- #define APPLESPI_PACKET_SIZE 256
- #define APPLESPI_STATUS_SIZE 4
- #define PACKET_TYPE_READ 0x20
- #define PACKET_TYPE_WRITE 0x40
- #define PACKET_DEV_KEYB 0x01
- #define PACKET_DEV_TPAD 0x02
- #define PACKET_DEV_INFO 0xd0
- #define MAX_ROLLOVER 6
- #define MAX_FINGERS 11
- #define MAX_FINGER_ORIENTATION 16384
- #define MAX_PKTS_PER_MSG 2
- #define KBD_BL_LEVEL_MIN 32U
- #define KBD_BL_LEVEL_MAX 255U
- #define KBD_BL_LEVEL_SCALE 1000000U
- #define KBD_BL_LEVEL_ADJ \
- ((KBD_BL_LEVEL_MAX - KBD_BL_LEVEL_MIN) * KBD_BL_LEVEL_SCALE / 255U)
- #define EFI_BL_LEVEL_NAME L"KeyboardBacklightLevel"
- #define EFI_BL_LEVEL_GUID EFI_GUID(0xa076d2af, 0x9678, 0x4386, 0x8b, 0x58, 0x1f, 0xc8, 0xef, 0x04, 0x16, 0x19)
- #define APPLE_FLAG_FKEY 0x01
- #define SPI_RW_CHG_DELAY_US 100 /* from experimentation, in µs */
- #define SYNAPTICS_VENDOR_ID 0x06cb
- static unsigned int fnmode = 1;
- module_param(fnmode, uint, 0644);
- MODULE_PARM_DESC(fnmode, "Mode of Fn key on Apple keyboards (0 = disabled, [1] = fkeyslast, 2 = fkeysfirst)");
- static unsigned int fnremap;
- module_param(fnremap, uint, 0644);
- MODULE_PARM_DESC(fnremap, "Remap Fn key ([0] = no-remap; 1 = left-ctrl, 2 = left-shift, 3 = left-alt, 4 = left-meta, 6 = right-shift, 7 = right-alt, 8 = right-meta)");
- static bool iso_layout;
- module_param(iso_layout, bool, 0644);
- MODULE_PARM_DESC(iso_layout, "Enable/Disable hardcoded ISO-layout of the keyboard. ([0] = disabled, 1 = enabled)");
- static char touchpad_dimensions[40];
- module_param_string(touchpad_dimensions, touchpad_dimensions,
- sizeof(touchpad_dimensions), 0444);
- MODULE_PARM_DESC(touchpad_dimensions, "The pixel dimensions of the touchpad, as XxY+W+H .");
- /**
- * struct keyboard_protocol - keyboard message.
- * message.type = 0x0110, message.length = 0x000a
- *
- * @unknown1: unknown
- * @modifiers: bit-set of modifier/control keys pressed
- * @unknown2: unknown
- * @keys_pressed: the (non-modifier) keys currently pressed
- * @fn_pressed: whether the fn key is currently pressed
- * @crc16: crc over the whole message struct (message header +
- * this struct) minus this @crc16 field
- */
- struct keyboard_protocol {
- u8 unknown1;
- u8 modifiers;
- u8 unknown2;
- u8 keys_pressed[MAX_ROLLOVER];
- u8 fn_pressed;
- __le16 crc16;
- };
- /**
- * struct tp_finger - single trackpad finger structure, le16-aligned
- *
- * @origin: zero when switching track finger
- * @abs_x: absolute x coordinate
- * @abs_y: absolute y coordinate
- * @rel_x: relative x coordinate
- * @rel_y: relative y coordinate
- * @tool_major: tool area, major axis
- * @tool_minor: tool area, minor axis
- * @orientation: 16384 when point, else 15 bit angle
- * @touch_major: touch area, major axis
- * @touch_minor: touch area, minor axis
- * @unused: zeros
- * @pressure: pressure on forcetouch touchpad
- * @multi: one finger: varies, more fingers: constant
- * @crc16: on last finger: crc over the whole message struct
- * (i.e. message header + this struct) minus the last
- * @crc16 field; unknown on all other fingers.
- */
- struct tp_finger {
- __le16 origin;
- __le16 abs_x;
- __le16 abs_y;
- __le16 rel_x;
- __le16 rel_y;
- __le16 tool_major;
- __le16 tool_minor;
- __le16 orientation;
- __le16 touch_major;
- __le16 touch_minor;
- __le16 unused[2];
- __le16 pressure;
- __le16 multi;
- __le16 crc16;
- };
- /**
- * struct touchpad_protocol - touchpad message.
- * message.type = 0x0210
- *
- * @unknown1: unknown
- * @clicked: 1 if a button-click was detected, 0 otherwise
- * @unknown2: unknown
- * @number_of_fingers: the number of fingers being reported in @fingers
- * @clicked2: same as @clicked
- * @unknown3: unknown
- * @fingers: the data for each finger
- */
- struct touchpad_protocol {
- u8 unknown1[1];
- u8 clicked;
- u8 unknown2[28];
- u8 number_of_fingers;
- u8 clicked2;
- u8 unknown3[16];
- struct tp_finger fingers[];
- };
- /**
- * struct command_protocol_tp_info - get touchpad info.
- * message.type = 0x1020, message.length = 0x0000
- *
- * @crc16: crc over the whole message struct (message header +
- * this struct) minus this @crc16 field
- */
- struct command_protocol_tp_info {
- __le16 crc16;
- };
- /**
- * struct touchpad_info - touchpad info response.
- * message.type = 0x1020, message.length = 0x006e
- *
- * @unknown1: unknown
- * @model_flags: flags (vary by model number, but significance otherwise
- * unknown)
- * @model_no: the touchpad model number
- * @unknown2: unknown
- * @crc16: crc over the whole message struct (message header +
- * this struct) minus this @crc16 field
- */
- struct touchpad_info_protocol {
- u8 unknown1[105];
- u8 model_flags;
- u8 model_no;
- u8 unknown2[3];
- __le16 crc16;
- };
- /**
- * struct command_protocol_mt_init - initialize multitouch.
- * message.type = 0x0252, message.length = 0x0002
- *
- * @cmd: value: 0x0102
- * @crc16: crc over the whole message struct (message header +
- * this struct) minus this @crc16 field
- */
- struct command_protocol_mt_init {
- __le16 cmd;
- __le16 crc16;
- };
- /**
- * struct command_protocol_capsl - toggle caps-lock led
- * message.type = 0x0151, message.length = 0x0002
- *
- * @unknown: value: 0x01 (length?)
- * @led: 0 off, 2 on
- * @crc16: crc over the whole message struct (message header +
- * this struct) minus this @crc16 field
- */
- struct command_protocol_capsl {
- u8 unknown;
- u8 led;
- __le16 crc16;
- };
- /**
- * struct command_protocol_bl - set keyboard backlight brightness
- * message.type = 0xB051, message.length = 0x0006
- *
- * @const1: value: 0x01B0
- * @level: the brightness level to set
- * @const2: value: 0x0001 (backlight off), 0x01F4 (backlight on)
- * @crc16: crc over the whole message struct (message header +
- * this struct) minus this @crc16 field
- */
- struct command_protocol_bl {
- __le16 const1;
- __le16 level;
- __le16 const2;
- __le16 crc16;
- };
- /**
- * struct message - a complete spi message.
- *
- * Each message begins with fixed header, followed by a message-type specific
- * payload, and ends with a 16-bit crc. Because of the varying lengths of the
- * payload, the crc is defined at the end of each payload struct, rather than
- * in this struct.
- *
- * @type: the message type
- * @zero: always 0
- * @counter: incremented on each message, rolls over after 255; there is a
- * separate counter for each message type.
- * @rsp_buf_len:response buffer length (the exact nature of this field is quite
- * speculative). On a request/write this is often the same as
- * @length, though in some cases it has been seen to be much larger
- * (e.g. 0x400); on a response/read this the same as on the
- * request; for reads that are not responses it is 0.
- * @length: length of the remainder of the data in the whole message
- * structure (after re-assembly in case of being split over
- * multiple spi-packets), minus the trailing crc. The total size
- * of the message struct is therefore @length + 10.
- */
- struct message {
- __le16 type;
- u8 zero;
- u8 counter;
- __le16 rsp_buf_len;
- __le16 length;
- union {
- struct keyboard_protocol keyboard;
- struct touchpad_protocol touchpad;
- struct touchpad_info_protocol tp_info;
- struct command_protocol_tp_info tp_info_command;
- struct command_protocol_mt_init init_mt_command;
- struct command_protocol_capsl capsl_command;
- struct command_protocol_bl bl_command;
- u8 data[0];
- };
- };
- /* type + zero + counter + rsp_buf_len + length */
- #define MSG_HEADER_SIZE 8
- /**
- * struct spi_packet - a complete spi packet; always 256 bytes. This carries
- * the (parts of the) message in the data. But note that this does not
- * necessarily contain a complete message, as in some cases (e.g. many
- * fingers pressed) the message is split over multiple packets (see the
- * @offset, @remaining, and @length fields). In general the data parts in
- * spi_packet's are concatenated until @remaining is 0, and the result is an
- * message.
- *
- * @flags: 0x40 = write (to device), 0x20 = read (from device); note that
- * the response to a write still has 0x40.
- * @device: 1 = keyboard, 2 = touchpad
- * @offset: specifies the offset of this packet's data in the complete
- * message; i.e. > 0 indicates this is a continuation packet (in
- * the second packet for a message split over multiple packets
- * this would then be the same as the @length in the first packet)
- * @remaining: number of message bytes remaining in subsequents packets (in
- * the first packet of a message split over two packets this would
- * then be the same as the @length in the second packet)
- * @length: length of the valid data in the @data in this packet
- * @data: all or part of a message
- * @crc16: crc over this whole structure minus this @crc16 field. This
- * covers just this packet, even on multi-packet messages (in
- * contrast to the crc in the message).
- */
- struct spi_packet {
- u8 flags;
- u8 device;
- __le16 offset;
- __le16 remaining;
- __le16 length;
- u8 data[246];
- __le16 crc16;
- };
- struct spi_settings {
- u64 spi_cs_delay; /* cs-to-clk delay in us */
- u64 reset_a2r_usec; /* active-to-receive delay? */
- u64 reset_rec_usec; /* ? (cur val: 10) */
- };
- /* this mimics struct drm_rect */
- struct applespi_tp_info {
- int x_min;
- int y_min;
- int x_max;
- int y_max;
- };
- struct applespi_data {
- struct spi_device *spi;
- struct spi_settings spi_settings;
- struct input_dev *keyboard_input_dev;
- struct input_dev *touchpad_input_dev;
- u8 *tx_buffer;
- u8 *tx_status;
- u8 *rx_buffer;
- u8 *msg_buf;
- unsigned int saved_msg_len;
- struct applespi_tp_info tp_info;
- u8 last_keys_pressed[MAX_ROLLOVER];
- u8 last_keys_fn_pressed[MAX_ROLLOVER];
- u8 last_fn_pressed;
- struct input_mt_pos pos[MAX_FINGERS];
- int slots[MAX_FINGERS];
- int gpe;
- acpi_handle sien;
- acpi_handle sist;
- struct spi_transfer dl_t;
- struct spi_transfer rd_t;
- struct spi_message rd_m;
- struct spi_transfer ww_t;
- struct spi_transfer wd_t;
- struct spi_transfer wr_t;
- struct spi_transfer st_t;
- struct spi_message wr_m;
- bool want_tp_info_cmd;
- bool want_mt_init_cmd;
- bool want_cl_led_on;
- bool have_cl_led_on;
- unsigned int want_bl_level;
- unsigned int have_bl_level;
- unsigned int cmd_msg_cntr;
- /* lock to protect the above parameters and flags below */
- spinlock_t cmd_msg_lock;
- ktime_t cmd_msg_queued;
- enum applespi_evt_type cmd_evt_type;
- struct led_classdev backlight_info;
- bool suspended;
- bool drain;
- wait_queue_head_t drain_complete;
- bool read_active;
- bool write_active;
- struct work_struct work;
- struct touchpad_info_protocol rcvd_tp_info;
- struct dentry *debugfs_root;
- bool debug_tp_dim;
- char tp_dim_val[40];
- int tp_dim_min_x;
- int tp_dim_max_x;
- int tp_dim_min_y;
- int tp_dim_max_y;
- };
- static const unsigned char applespi_scancodes[] = {
- 0, 0, 0, 0,
- KEY_A, KEY_B, KEY_C, KEY_D, KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J,
- KEY_K, KEY_L, KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T,
- KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z,
- KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0,
- KEY_ENTER, KEY_ESC, KEY_BACKSPACE, KEY_TAB, KEY_SPACE, KEY_MINUS,
- KEY_EQUAL, KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, 0,
- KEY_SEMICOLON, KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, KEY_DOT, KEY_SLASH,
- KEY_CAPSLOCK,
- KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, KEY_F8, KEY_F9,
- KEY_F10, KEY_F11, KEY_F12, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- KEY_RIGHT, KEY_LEFT, KEY_DOWN, KEY_UP,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_102ND,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RO, 0, KEY_YEN, 0, 0, 0, 0, 0,
- 0, KEY_KATAKANAHIRAGANA, KEY_MUHENKAN
- };
- /*
- * This must have exactly as many entries as there are bits in
- * struct keyboard_protocol.modifiers .
- */
- static const unsigned char applespi_controlcodes[] = {
- KEY_LEFTCTRL,
- KEY_LEFTSHIFT,
- KEY_LEFTALT,
- KEY_LEFTMETA,
- 0,
- KEY_RIGHTSHIFT,
- KEY_RIGHTALT,
- KEY_RIGHTMETA
- };
- struct applespi_key_translation {
- u16 from;
- u16 to;
- u8 flags;
- };
- static const struct applespi_key_translation applespi_fn_codes[] = {
- { KEY_BACKSPACE, KEY_DELETE },
- { KEY_ENTER, KEY_INSERT },
- { KEY_F1, KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
- { KEY_F2, KEY_BRIGHTNESSUP, APPLE_FLAG_FKEY },
- { KEY_F3, KEY_SCALE, APPLE_FLAG_FKEY },
- { KEY_F4, KEY_DASHBOARD, APPLE_FLAG_FKEY },
- { KEY_F5, KEY_KBDILLUMDOWN, APPLE_FLAG_FKEY },
- { KEY_F6, KEY_KBDILLUMUP, APPLE_FLAG_FKEY },
- { KEY_F7, KEY_PREVIOUSSONG, APPLE_FLAG_FKEY },
- { KEY_F8, KEY_PLAYPAUSE, APPLE_FLAG_FKEY },
- { KEY_F9, KEY_NEXTSONG, APPLE_FLAG_FKEY },
- { KEY_F10, KEY_MUTE, APPLE_FLAG_FKEY },
- { KEY_F11, KEY_VOLUMEDOWN, APPLE_FLAG_FKEY },
- { KEY_F12, KEY_VOLUMEUP, APPLE_FLAG_FKEY },
- { KEY_RIGHT, KEY_END },
- { KEY_LEFT, KEY_HOME },
- { KEY_DOWN, KEY_PAGEDOWN },
- { KEY_UP, KEY_PAGEUP },
- { }
- };
- static const struct applespi_key_translation apple_iso_keyboard[] = {
- { KEY_GRAVE, KEY_102ND },
- { KEY_102ND, KEY_GRAVE },
- { }
- };
- struct applespi_tp_model_info {
- u16 model;
- struct applespi_tp_info tp_info;
- };
- static const struct applespi_tp_model_info applespi_tp_models[] = {
- {
- .model = 0x04, /* MB8 MB9 MB10 */
- .tp_info = { -5087, -182, 5579, 6089 },
- },
- {
- .model = 0x05, /* MBP13,1 MBP13,2 MBP14,1 MBP14,2 */
- .tp_info = { -6243, -170, 6749, 7685 },
- },
- {
- .model = 0x06, /* MBP13,3 MBP14,3 */
- .tp_info = { -7456, -163, 7976, 9283 },
- },
- {}
- };
- typedef void (*applespi_trace_fun)(enum applespi_evt_type,
- enum applespi_pkt_type, u8 *, size_t);
- static applespi_trace_fun applespi_get_trace_fun(enum applespi_evt_type type)
- {
- switch (type) {
- case ET_CMD_TP_INI:
- return trace_applespi_tp_ini_cmd;
- case ET_CMD_BL:
- return trace_applespi_backlight_cmd;
- case ET_CMD_CL:
- return trace_applespi_caps_lock_cmd;
- case ET_RD_KEYB:
- return trace_applespi_keyboard_data;
- case ET_RD_TPAD:
- return trace_applespi_touchpad_data;
- case ET_RD_UNKN:
- return trace_applespi_unknown_data;
- default:
- WARN_ONCE(1, "Unknown msg type %d", type);
- return trace_applespi_unknown_data;
- }
- }
- static void applespi_setup_read_txfrs(struct applespi_data *applespi)
- {
- struct spi_message *msg = &applespi->rd_m;
- struct spi_transfer *dl_t = &applespi->dl_t;
- struct spi_transfer *rd_t = &applespi->rd_t;
- memset(dl_t, 0, sizeof(*dl_t));
- memset(rd_t, 0, sizeof(*rd_t));
- dl_t->delay_usecs = applespi->spi_settings.spi_cs_delay;
- rd_t->rx_buf = applespi->rx_buffer;
- rd_t->len = APPLESPI_PACKET_SIZE;
- spi_message_init(msg);
- spi_message_add_tail(dl_t, msg);
- spi_message_add_tail(rd_t, msg);
- }
- static void applespi_setup_write_txfrs(struct applespi_data *applespi)
- {
- struct spi_message *msg = &applespi->wr_m;
- struct spi_transfer *wt_t = &applespi->ww_t;
- struct spi_transfer *dl_t = &applespi->wd_t;
- struct spi_transfer *wr_t = &applespi->wr_t;
- struct spi_transfer *st_t = &applespi->st_t;
- memset(wt_t, 0, sizeof(*wt_t));
- memset(dl_t, 0, sizeof(*dl_t));
- memset(wr_t, 0, sizeof(*wr_t));
- memset(st_t, 0, sizeof(*st_t));
- /*
- * All we need here is a delay at the beginning of the message before
- * asserting cs. But the current spi API doesn't support this, so we
- * end up with an extra unnecessary (but harmless) cs assertion and
- * deassertion.
- */
- wt_t->delay_usecs = SPI_RW_CHG_DELAY_US;
- wt_t->cs_change = 1;
- dl_t->delay_usecs = applespi->spi_settings.spi_cs_delay;
- wr_t->tx_buf = applespi->tx_buffer;
- wr_t->len = APPLESPI_PACKET_SIZE;
- wr_t->delay_usecs = SPI_RW_CHG_DELAY_US;
- st_t->rx_buf = applespi->tx_status;
- st_t->len = APPLESPI_STATUS_SIZE;
- spi_message_init(msg);
- spi_message_add_tail(wt_t, msg);
- spi_message_add_tail(dl_t, msg);
- spi_message_add_tail(wr_t, msg);
- spi_message_add_tail(st_t, msg);
- }
- static int applespi_async(struct applespi_data *applespi,
- struct spi_message *message, void (*complete)(void *))
- {
- message->complete = complete;
- message->context = applespi;
- return spi_async(applespi->spi, message);
- }
- static inline bool applespi_check_write_status(struct applespi_data *applespi,
- int sts)
- {
- static u8 status_ok[] = { 0xac, 0x27, 0x68, 0xd5 };
- if (sts < 0) {
- dev_warn(&applespi->spi->dev, "Error writing to device: %d\n",
- sts);
- return false;
- }
- if (memcmp(applespi->tx_status, status_ok, APPLESPI_STATUS_SIZE)) {
- dev_warn(&applespi->spi->dev, "Error writing to device: %*ph\n",
- APPLESPI_STATUS_SIZE, applespi->tx_status);
- return false;
- }
- return true;
- }
- static int applespi_get_spi_settings(struct applespi_data *applespi)
- {
- struct acpi_device *adev = ACPI_COMPANION(&applespi->spi->dev);
- const union acpi_object *o;
- struct spi_settings *settings = &applespi->spi_settings;
- if (!acpi_dev_get_property(adev, "spiCSDelay", ACPI_TYPE_BUFFER, &o))
- settings->spi_cs_delay = *(u64 *)o->buffer.pointer;
- else
- dev_warn(&applespi->spi->dev,
- "Property spiCSDelay not found\n");
- if (!acpi_dev_get_property(adev, "resetA2RUsec", ACPI_TYPE_BUFFER, &o))
- settings->reset_a2r_usec = *(u64 *)o->buffer.pointer;
- else
- dev_warn(&applespi->spi->dev,
- "Property resetA2RUsec not found\n");
- if (!acpi_dev_get_property(adev, "resetRecUsec", ACPI_TYPE_BUFFER, &o))
- settings->reset_rec_usec = *(u64 *)o->buffer.pointer;
- else
- dev_warn(&applespi->spi->dev,
- "Property resetRecUsec not found\n");
- dev_dbg(&applespi->spi->dev,
- "SPI settings: spi_cs_delay=%llu reset_a2r_usec=%llu reset_rec_usec=%llu\n",
- settings->spi_cs_delay, settings->reset_a2r_usec,
- settings->reset_rec_usec);
- return 0;
- }
- static int applespi_setup_spi(struct applespi_data *applespi)
- {
- int sts;
- sts = applespi_get_spi_settings(applespi);
- if (sts)
- return sts;
- spin_lock_init(&applespi->cmd_msg_lock);
- init_waitqueue_head(&applespi->drain_complete);
- return 0;
- }
- static int applespi_enable_spi(struct applespi_data *applespi)
- {
- acpi_status acpi_sts;
- unsigned long long spi_status;
- /* check if SPI is already enabled, so we can skip the delay below */
- acpi_sts = acpi_evaluate_integer(applespi->sist, NULL, NULL,
- &spi_status);
- if (ACPI_SUCCESS(acpi_sts) && spi_status)
- return 0;
- /* SIEN(1) will enable SPI communication */
- acpi_sts = acpi_execute_simple_method(applespi->sien, NULL, 1);
- if (ACPI_FAILURE(acpi_sts)) {
- dev_err(&applespi->spi->dev, "SIEN failed: %s\n",
- acpi_format_exception(acpi_sts));
- return -ENODEV;
- }
- /*
- * Allow the SPI interface to come up before returning. Without this
- * delay, the SPI commands to enable multitouch mode may not reach
- * the trackpad controller, causing pointer movement to break upon
- * resume from sleep.
- */
- msleep(50);
- return 0;
- }
- static int applespi_send_cmd_msg(struct applespi_data *applespi);
- static void applespi_msg_complete(struct applespi_data *applespi,
- bool is_write_msg, bool is_read_compl)
- {
- unsigned long flags;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- if (is_read_compl)
- applespi->read_active = false;
- if (is_write_msg)
- applespi->write_active = false;
- if (applespi->drain && !applespi->write_active)
- wake_up_all(&applespi->drain_complete);
- if (is_write_msg) {
- applespi->cmd_msg_queued = 0;
- applespi_send_cmd_msg(applespi);
- }
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- }
- static void applespi_async_write_complete(void *context)
- {
- struct applespi_data *applespi = context;
- enum applespi_evt_type evt_type = applespi->cmd_evt_type;
- applespi_get_trace_fun(evt_type)(evt_type, PT_WRITE,
- applespi->tx_buffer,
- APPLESPI_PACKET_SIZE);
- applespi_get_trace_fun(evt_type)(evt_type, PT_STATUS,
- applespi->tx_status,
- APPLESPI_STATUS_SIZE);
- if (!applespi_check_write_status(applespi, applespi->wr_m.status)) {
- /*
- * If we got an error, we presumably won't get the expected
- * response message either.
- */
- applespi_msg_complete(applespi, true, false);
- }
- }
- static int applespi_send_cmd_msg(struct applespi_data *applespi)
- {
- u16 crc;
- int sts;
- struct spi_packet *packet = (struct spi_packet *)applespi->tx_buffer;
- struct message *message = (struct message *)packet->data;
- u16 msg_len;
- u8 device;
- /* check if draining */
- if (applespi->drain)
- return 0;
- /* check whether send is in progress */
- if (applespi->cmd_msg_queued) {
- if (ktime_ms_delta(ktime_get(), applespi->cmd_msg_queued) < 1000)
- return 0;
- dev_warn(&applespi->spi->dev, "Command %d timed out\n",
- applespi->cmd_evt_type);
- applespi->cmd_msg_queued = 0;
- applespi->write_active = false;
- }
- /* set up packet */
- memset(packet, 0, APPLESPI_PACKET_SIZE);
- /* are we processing init commands? */
- if (applespi->want_tp_info_cmd) {
- applespi->want_tp_info_cmd = false;
- applespi->want_mt_init_cmd = true;
- applespi->cmd_evt_type = ET_CMD_TP_INI;
- /* build init command */
- device = PACKET_DEV_INFO;
- message->type = cpu_to_le16(0x1020);
- msg_len = sizeof(message->tp_info_command);
- message->zero = 0x02;
- message->rsp_buf_len = cpu_to_le16(0x0200);
- } else if (applespi->want_mt_init_cmd) {
- applespi->want_mt_init_cmd = false;
- applespi->cmd_evt_type = ET_CMD_TP_INI;
- /* build init command */
- device = PACKET_DEV_TPAD;
- message->type = cpu_to_le16(0x0252);
- msg_len = sizeof(message->init_mt_command);
- message->init_mt_command.cmd = cpu_to_le16(0x0102);
- /* do we need caps-lock command? */
- } else if (applespi->want_cl_led_on != applespi->have_cl_led_on) {
- applespi->have_cl_led_on = applespi->want_cl_led_on;
- applespi->cmd_evt_type = ET_CMD_CL;
- /* build led command */
- device = PACKET_DEV_KEYB;
- message->type = cpu_to_le16(0x0151);
- msg_len = sizeof(message->capsl_command);
- message->capsl_command.unknown = 0x01;
- message->capsl_command.led = applespi->have_cl_led_on ? 2 : 0;
- /* do we need backlight command? */
- } else if (applespi->want_bl_level != applespi->have_bl_level) {
- applespi->have_bl_level = applespi->want_bl_level;
- applespi->cmd_evt_type = ET_CMD_BL;
- /* build command buffer */
- device = PACKET_DEV_KEYB;
- message->type = cpu_to_le16(0xB051);
- msg_len = sizeof(message->bl_command);
- message->bl_command.const1 = cpu_to_le16(0x01B0);
- message->bl_command.level =
- cpu_to_le16(applespi->have_bl_level);
- if (applespi->have_bl_level > 0)
- message->bl_command.const2 = cpu_to_le16(0x01F4);
- else
- message->bl_command.const2 = cpu_to_le16(0x0001);
- /* everything's up-to-date */
- } else {
- return 0;
- }
- /* finalize packet */
- packet->flags = PACKET_TYPE_WRITE;
- packet->device = device;
- packet->length = cpu_to_le16(MSG_HEADER_SIZE + msg_len);
- message->counter = applespi->cmd_msg_cntr++ % (U8_MAX + 1);
- message->length = cpu_to_le16(msg_len - 2);
- if (!message->rsp_buf_len)
- message->rsp_buf_len = message->length;
- crc = crc16(0, (u8 *)message, le16_to_cpu(packet->length) - 2);
- put_unaligned_le16(crc, &message->data[msg_len - 2]);
- crc = crc16(0, (u8 *)packet, sizeof(*packet) - 2);
- packet->crc16 = cpu_to_le16(crc);
- /* send command */
- sts = applespi_async(applespi, &applespi->wr_m,
- applespi_async_write_complete);
- if (sts) {
- dev_warn(&applespi->spi->dev,
- "Error queueing async write to device: %d\n", sts);
- return sts;
- }
- applespi->cmd_msg_queued = ktime_get_coarse();
- applespi->write_active = true;
- return 0;
- }
- static void applespi_init(struct applespi_data *applespi, bool is_resume)
- {
- unsigned long flags;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- if (is_resume)
- applespi->want_mt_init_cmd = true;
- else
- applespi->want_tp_info_cmd = true;
- applespi_send_cmd_msg(applespi);
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- }
- static int applespi_set_capsl_led(struct applespi_data *applespi,
- bool capslock_on)
- {
- unsigned long flags;
- int sts;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- applespi->want_cl_led_on = capslock_on;
- sts = applespi_send_cmd_msg(applespi);
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- return sts;
- }
- static void applespi_set_bl_level(struct led_classdev *led_cdev,
- enum led_brightness value)
- {
- struct applespi_data *applespi =
- container_of(led_cdev, struct applespi_data, backlight_info);
- unsigned long flags;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- if (value == 0) {
- applespi->want_bl_level = value;
- } else {
- /*
- * The backlight does not turn on till level 32, so we scale
- * the range here so that from a user's perspective it turns
- * on at 1.
- */
- applespi->want_bl_level =
- ((value * KBD_BL_LEVEL_ADJ) / KBD_BL_LEVEL_SCALE +
- KBD_BL_LEVEL_MIN);
- }
- applespi_send_cmd_msg(applespi);
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- }
- static int applespi_event(struct input_dev *dev, unsigned int type,
- unsigned int code, int value)
- {
- struct applespi_data *applespi = input_get_drvdata(dev);
- switch (type) {
- case EV_LED:
- applespi_set_capsl_led(applespi, !!test_bit(LED_CAPSL, dev->led));
- return 0;
- }
- return -EINVAL;
- }
- /* lifted from the BCM5974 driver and renamed from raw2int */
- /* convert 16-bit little endian to signed integer */
- static inline int le16_to_int(__le16 x)
- {
- return (signed short)le16_to_cpu(x);
- }
- static void applespi_debug_update_dimensions(struct applespi_data *applespi,
- const struct tp_finger *f)
- {
- applespi->tp_dim_min_x = min(applespi->tp_dim_min_x,
- le16_to_int(f->abs_x));
- applespi->tp_dim_max_x = max(applespi->tp_dim_max_x,
- le16_to_int(f->abs_x));
- applespi->tp_dim_min_y = min(applespi->tp_dim_min_y,
- le16_to_int(f->abs_y));
- applespi->tp_dim_max_y = max(applespi->tp_dim_max_y,
- le16_to_int(f->abs_y));
- }
- static int applespi_tp_dim_open(struct inode *inode, struct file *file)
- {
- struct applespi_data *applespi = inode->i_private;
- file->private_data = applespi;
- snprintf(applespi->tp_dim_val, sizeof(applespi->tp_dim_val),
- "0x%.4x %dx%d+%u+%u\n",
- applespi->touchpad_input_dev->id.product,
- applespi->tp_dim_min_x, applespi->tp_dim_min_y,
- applespi->tp_dim_max_x - applespi->tp_dim_min_x,
- applespi->tp_dim_max_y - applespi->tp_dim_min_y);
- return nonseekable_open(inode, file);
- }
- static ssize_t applespi_tp_dim_read(struct file *file, char __user *buf,
- size_t len, loff_t *off)
- {
- struct applespi_data *applespi = file->private_data;
- return simple_read_from_buffer(buf, len, off, applespi->tp_dim_val,
- strlen(applespi->tp_dim_val));
- }
- static const struct file_operations applespi_tp_dim_fops = {
- .owner = THIS_MODULE,
- .open = applespi_tp_dim_open,
- .read = applespi_tp_dim_read,
- .llseek = no_llseek,
- };
- static void report_finger_data(struct input_dev *input, int slot,
- const struct input_mt_pos *pos,
- const struct tp_finger *f)
- {
- input_mt_slot(input, slot);
- input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
- input_report_abs(input, ABS_MT_TOUCH_MAJOR,
- le16_to_int(f->touch_major) << 1);
- input_report_abs(input, ABS_MT_TOUCH_MINOR,
- le16_to_int(f->touch_minor) << 1);
- input_report_abs(input, ABS_MT_WIDTH_MAJOR,
- le16_to_int(f->tool_major) << 1);
- input_report_abs(input, ABS_MT_WIDTH_MINOR,
- le16_to_int(f->tool_minor) << 1);
- input_report_abs(input, ABS_MT_ORIENTATION,
- MAX_FINGER_ORIENTATION - le16_to_int(f->orientation));
- input_report_abs(input, ABS_MT_POSITION_X, pos->x);
- input_report_abs(input, ABS_MT_POSITION_Y, pos->y);
- }
- static void report_tp_state(struct applespi_data *applespi,
- struct touchpad_protocol *t)
- {
- const struct tp_finger *f;
- struct input_dev *input;
- const struct applespi_tp_info *tp_info = &applespi->tp_info;
- int i, n;
- /* touchpad_input_dev is set async in worker */
- input = smp_load_acquire(&applespi->touchpad_input_dev);
- if (!input)
- return; /* touchpad isn't initialized yet */
- n = 0;
- for (i = 0; i < t->number_of_fingers; i++) {
- f = &t->fingers[i];
- if (le16_to_int(f->touch_major) == 0)
- continue;
- applespi->pos[n].x = le16_to_int(f->abs_x);
- applespi->pos[n].y = tp_info->y_min + tp_info->y_max -
- le16_to_int(f->abs_y);
- n++;
- if (applespi->debug_tp_dim)
- applespi_debug_update_dimensions(applespi, f);
- }
- input_mt_assign_slots(input, applespi->slots, applespi->pos, n, 0);
- for (i = 0; i < n; i++)
- report_finger_data(input, applespi->slots[i],
- &applespi->pos[i], &t->fingers[i]);
- input_mt_sync_frame(input);
- input_report_key(input, BTN_LEFT, t->clicked);
- input_sync(input);
- }
- static const struct applespi_key_translation *
- applespi_find_translation(const struct applespi_key_translation *table, u16 key)
- {
- const struct applespi_key_translation *trans;
- for (trans = table; trans->from; trans++)
- if (trans->from == key)
- return trans;
- return NULL;
- }
- static unsigned int applespi_translate_fn_key(unsigned int key, int fn_pressed)
- {
- const struct applespi_key_translation *trans;
- int do_translate;
- trans = applespi_find_translation(applespi_fn_codes, key);
- if (trans) {
- if (trans->flags & APPLE_FLAG_FKEY)
- do_translate = (fnmode == 2 && fn_pressed) ||
- (fnmode == 1 && !fn_pressed);
- else
- do_translate = fn_pressed;
- if (do_translate)
- key = trans->to;
- }
- return key;
- }
- static unsigned int applespi_translate_iso_layout(unsigned int key)
- {
- const struct applespi_key_translation *trans;
- trans = applespi_find_translation(apple_iso_keyboard, key);
- if (trans)
- key = trans->to;
- return key;
- }
- static unsigned int applespi_code_to_key(u8 code, int fn_pressed)
- {
- unsigned int key = applespi_scancodes[code];
- if (fnmode)
- key = applespi_translate_fn_key(key, fn_pressed);
- if (iso_layout)
- key = applespi_translate_iso_layout(key);
- return key;
- }
- static void
- applespi_remap_fn_key(struct keyboard_protocol *keyboard_protocol)
- {
- unsigned char tmp;
- u8 bit = BIT((fnremap - 1) & 0x07);
- if (!fnremap || fnremap > ARRAY_SIZE(applespi_controlcodes) ||
- !applespi_controlcodes[fnremap - 1])
- return;
- tmp = keyboard_protocol->fn_pressed;
- keyboard_protocol->fn_pressed = !!(keyboard_protocol->modifiers & bit);
- if (tmp)
- keyboard_protocol->modifiers |= bit;
- else
- keyboard_protocol->modifiers &= ~bit;
- }
- static void
- applespi_handle_keyboard_event(struct applespi_data *applespi,
- struct keyboard_protocol *keyboard_protocol)
- {
- unsigned int key;
- int i;
- compiletime_assert(ARRAY_SIZE(applespi_controlcodes) ==
- sizeof_field(struct keyboard_protocol, modifiers) * 8,
- "applespi_controlcodes has wrong number of entries");
- /* check for rollover overflow, which is signalled by all keys == 1 */
- if (!memchr_inv(keyboard_protocol->keys_pressed, 1, MAX_ROLLOVER))
- return;
- /* remap fn key if desired */
- applespi_remap_fn_key(keyboard_protocol);
- /* check released keys */
- for (i = 0; i < MAX_ROLLOVER; i++) {
- if (memchr(keyboard_protocol->keys_pressed,
- applespi->last_keys_pressed[i], MAX_ROLLOVER))
- continue; /* key is still pressed */
- key = applespi_code_to_key(applespi->last_keys_pressed[i],
- applespi->last_keys_fn_pressed[i]);
- input_report_key(applespi->keyboard_input_dev, key, 0);
- applespi->last_keys_fn_pressed[i] = 0;
- }
- /* check pressed keys */
- for (i = 0; i < MAX_ROLLOVER; i++) {
- if (keyboard_protocol->keys_pressed[i] <
- ARRAY_SIZE(applespi_scancodes) &&
- keyboard_protocol->keys_pressed[i] > 0) {
- key = applespi_code_to_key(
- keyboard_protocol->keys_pressed[i],
- keyboard_protocol->fn_pressed);
- input_report_key(applespi->keyboard_input_dev, key, 1);
- applespi->last_keys_fn_pressed[i] =
- keyboard_protocol->fn_pressed;
- }
- }
- /* check control keys */
- for (i = 0; i < ARRAY_SIZE(applespi_controlcodes); i++) {
- if (keyboard_protocol->modifiers & BIT(i))
- input_report_key(applespi->keyboard_input_dev,
- applespi_controlcodes[i], 1);
- else
- input_report_key(applespi->keyboard_input_dev,
- applespi_controlcodes[i], 0);
- }
- /* check function key */
- if (keyboard_protocol->fn_pressed && !applespi->last_fn_pressed)
- input_report_key(applespi->keyboard_input_dev, KEY_FN, 1);
- else if (!keyboard_protocol->fn_pressed && applespi->last_fn_pressed)
- input_report_key(applespi->keyboard_input_dev, KEY_FN, 0);
- applespi->last_fn_pressed = keyboard_protocol->fn_pressed;
- /* done */
- input_sync(applespi->keyboard_input_dev);
- memcpy(&applespi->last_keys_pressed, keyboard_protocol->keys_pressed,
- sizeof(applespi->last_keys_pressed));
- }
- static const struct applespi_tp_info *applespi_find_touchpad_info(u8 model)
- {
- const struct applespi_tp_model_info *info;
- for (info = applespi_tp_models; info->model; info++) {
- if (info->model == model)
- return &info->tp_info;
- }
- return NULL;
- }
- static int
- applespi_register_touchpad_device(struct applespi_data *applespi,
- struct touchpad_info_protocol *rcvd_tp_info)
- {
- const struct applespi_tp_info *tp_info;
- struct input_dev *touchpad_input_dev;
- int sts;
- /* set up touchpad dimensions */
- tp_info = applespi_find_touchpad_info(rcvd_tp_info->model_no);
- if (!tp_info) {
- dev_warn(&applespi->spi->dev,
- "Unknown touchpad model %x - falling back to MB8 touchpad\n",
- rcvd_tp_info->model_no);
- tp_info = &applespi_tp_models[0].tp_info;
- }
- applespi->tp_info = *tp_info;
- if (touchpad_dimensions[0]) {
- int x, y, w, h;
- sts = sscanf(touchpad_dimensions, "%dx%d+%u+%u", &x, &y, &w, &h);
- if (sts == 4) {
- dev_info(&applespi->spi->dev,
- "Overriding touchpad dimensions from module param\n");
- applespi->tp_info.x_min = x;
- applespi->tp_info.y_min = y;
- applespi->tp_info.x_max = x + w;
- applespi->tp_info.y_max = y + h;
- } else {
- dev_warn(&applespi->spi->dev,
- "Invalid touchpad dimensions '%s': must be in the form XxY+W+H\n",
- touchpad_dimensions);
- touchpad_dimensions[0] = '\0';
- }
- }
- if (!touchpad_dimensions[0]) {
- snprintf(touchpad_dimensions, sizeof(touchpad_dimensions),
- "%dx%d+%u+%u",
- applespi->tp_info.x_min,
- applespi->tp_info.y_min,
- applespi->tp_info.x_max - applespi->tp_info.x_min,
- applespi->tp_info.y_max - applespi->tp_info.y_min);
- }
- /* create touchpad input device */
- touchpad_input_dev = devm_input_allocate_device(&applespi->spi->dev);
- if (!touchpad_input_dev) {
- dev_err(&applespi->spi->dev,
- "Failed to allocate touchpad input device\n");
- return -ENOMEM;
- }
- touchpad_input_dev->name = "Apple SPI Touchpad";
- touchpad_input_dev->phys = "applespi/input1";
- touchpad_input_dev->dev.parent = &applespi->spi->dev;
- touchpad_input_dev->id.bustype = BUS_SPI;
- touchpad_input_dev->id.vendor = SYNAPTICS_VENDOR_ID;
- touchpad_input_dev->id.product =
- rcvd_tp_info->model_no << 8 | rcvd_tp_info->model_flags;
- /* basic properties */
- input_set_capability(touchpad_input_dev, EV_REL, REL_X);
- input_set_capability(touchpad_input_dev, EV_REL, REL_Y);
- __set_bit(INPUT_PROP_POINTER, touchpad_input_dev->propbit);
- __set_bit(INPUT_PROP_BUTTONPAD, touchpad_input_dev->propbit);
- /* finger touch area */
- input_set_abs_params(touchpad_input_dev, ABS_MT_TOUCH_MAJOR,
- 0, 5000, 0, 0);
- input_set_abs_params(touchpad_input_dev, ABS_MT_TOUCH_MINOR,
- 0, 5000, 0, 0);
- /* finger approach area */
- input_set_abs_params(touchpad_input_dev, ABS_MT_WIDTH_MAJOR,
- 0, 5000, 0, 0);
- input_set_abs_params(touchpad_input_dev, ABS_MT_WIDTH_MINOR,
- 0, 5000, 0, 0);
- /* finger orientation */
- input_set_abs_params(touchpad_input_dev, ABS_MT_ORIENTATION,
- -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION,
- 0, 0);
- /* finger position */
- input_set_abs_params(touchpad_input_dev, ABS_MT_POSITION_X,
- applespi->tp_info.x_min, applespi->tp_info.x_max,
- 0, 0);
- input_set_abs_params(touchpad_input_dev, ABS_MT_POSITION_Y,
- applespi->tp_info.y_min, applespi->tp_info.y_max,
- 0, 0);
- /* touchpad button */
- input_set_capability(touchpad_input_dev, EV_KEY, BTN_LEFT);
- /* multitouch */
- sts = input_mt_init_slots(touchpad_input_dev, MAX_FINGERS,
- INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
- INPUT_MT_TRACK);
- if (sts) {
- dev_err(&applespi->spi->dev,
- "failed to initialize slots: %d", sts);
- return sts;
- }
- /* register input device */
- sts = input_register_device(touchpad_input_dev);
- if (sts) {
- dev_err(&applespi->spi->dev,
- "Unable to register touchpad input device (%d)\n", sts);
- return sts;
- }
- /* touchpad_input_dev is read async in spi callback */
- smp_store_release(&applespi->touchpad_input_dev, touchpad_input_dev);
- return 0;
- }
- static void applespi_worker(struct work_struct *work)
- {
- struct applespi_data *applespi =
- container_of(work, struct applespi_data, work);
- applespi_register_touchpad_device(applespi, &applespi->rcvd_tp_info);
- }
- static void applespi_handle_cmd_response(struct applespi_data *applespi,
- struct spi_packet *packet,
- struct message *message)
- {
- if (packet->device == PACKET_DEV_INFO &&
- le16_to_cpu(message->type) == 0x1020) {
- /*
- * We're not allowed to sleep here, but registering an input
- * device can sleep.
- */
- applespi->rcvd_tp_info = message->tp_info;
- schedule_work(&applespi->work);
- return;
- }
- if (le16_to_cpu(message->length) != 0x0000) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received unexpected write response: length=%x\n",
- le16_to_cpu(message->length));
- return;
- }
- if (packet->device == PACKET_DEV_TPAD &&
- le16_to_cpu(message->type) == 0x0252 &&
- le16_to_cpu(message->rsp_buf_len) == 0x0002)
- dev_info(&applespi->spi->dev, "modeswitch done.\n");
- }
- static bool applespi_verify_crc(struct applespi_data *applespi, u8 *buffer,
- size_t buflen)
- {
- u16 crc;
- crc = crc16(0, buffer, buflen);
- if (crc) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received corrupted packet (crc mismatch)\n");
- trace_applespi_bad_crc(ET_RD_CRC, READ, buffer, buflen);
- return false;
- }
- return true;
- }
- static void applespi_debug_print_read_packet(struct applespi_data *applespi,
- struct spi_packet *packet)
- {
- unsigned int evt_type;
- if (packet->flags == PACKET_TYPE_READ &&
- packet->device == PACKET_DEV_KEYB)
- evt_type = ET_RD_KEYB;
- else if (packet->flags == PACKET_TYPE_READ &&
- packet->device == PACKET_DEV_TPAD)
- evt_type = ET_RD_TPAD;
- else if (packet->flags == PACKET_TYPE_WRITE)
- evt_type = applespi->cmd_evt_type;
- else
- evt_type = ET_RD_UNKN;
- applespi_get_trace_fun(evt_type)(evt_type, PT_READ, applespi->rx_buffer,
- APPLESPI_PACKET_SIZE);
- }
- static void applespi_got_data(struct applespi_data *applespi)
- {
- struct spi_packet *packet;
- struct message *message;
- unsigned int msg_len;
- unsigned int off;
- unsigned int rem;
- unsigned int len;
- /* process packet header */
- if (!applespi_verify_crc(applespi, applespi->rx_buffer,
- APPLESPI_PACKET_SIZE)) {
- unsigned long flags;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- if (applespi->drain) {
- applespi->read_active = false;
- applespi->write_active = false;
- wake_up_all(&applespi->drain_complete);
- }
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- return;
- }
- packet = (struct spi_packet *)applespi->rx_buffer;
- applespi_debug_print_read_packet(applespi, packet);
- off = le16_to_cpu(packet->offset);
- rem = le16_to_cpu(packet->remaining);
- len = le16_to_cpu(packet->length);
- if (len > sizeof(packet->data)) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received corrupted packet (invalid packet length %u)\n",
- len);
- goto msg_complete;
- }
- /* handle multi-packet messages */
- if (rem > 0 || off > 0) {
- if (off != applespi->saved_msg_len) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received unexpected offset (got %u, expected %u)\n",
- off, applespi->saved_msg_len);
- goto msg_complete;
- }
- if (off + rem > MAX_PKTS_PER_MSG * APPLESPI_PACKET_SIZE) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received message too large (size %u)\n",
- off + rem);
- goto msg_complete;
- }
- if (off + len > MAX_PKTS_PER_MSG * APPLESPI_PACKET_SIZE) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received message too large (size %u)\n",
- off + len);
- goto msg_complete;
- }
- memcpy(applespi->msg_buf + off, &packet->data, len);
- applespi->saved_msg_len += len;
- if (rem > 0)
- return;
- message = (struct message *)applespi->msg_buf;
- msg_len = applespi->saved_msg_len;
- } else {
- message = (struct message *)&packet->data;
- msg_len = len;
- }
- /* got complete message - verify */
- if (!applespi_verify_crc(applespi, (u8 *)message, msg_len))
- goto msg_complete;
- if (le16_to_cpu(message->length) != msg_len - MSG_HEADER_SIZE - 2) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received corrupted packet (invalid message length %u - expected %u)\n",
- le16_to_cpu(message->length),
- msg_len - MSG_HEADER_SIZE - 2);
- goto msg_complete;
- }
- /* handle message */
- if (packet->flags == PACKET_TYPE_READ &&
- packet->device == PACKET_DEV_KEYB) {
- applespi_handle_keyboard_event(applespi, &message->keyboard);
- } else if (packet->flags == PACKET_TYPE_READ &&
- packet->device == PACKET_DEV_TPAD) {
- struct touchpad_protocol *tp;
- size_t tp_len;
- tp = &message->touchpad;
- tp_len = struct_size(tp, fingers, tp->number_of_fingers);
- if (le16_to_cpu(message->length) + 2 != tp_len) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Received corrupted packet (invalid message length %u - num-fingers %u, tp-len %zu)\n",
- le16_to_cpu(message->length),
- tp->number_of_fingers, tp_len);
- goto msg_complete;
- }
- if (tp->number_of_fingers > MAX_FINGERS) {
- dev_warn_ratelimited(&applespi->spi->dev,
- "Number of reported fingers (%u) exceeds max (%u))\n",
- tp->number_of_fingers,
- MAX_FINGERS);
- tp->number_of_fingers = MAX_FINGERS;
- }
- report_tp_state(applespi, tp);
- } else if (packet->flags == PACKET_TYPE_WRITE) {
- applespi_handle_cmd_response(applespi, packet, message);
- }
- msg_complete:
- applespi->saved_msg_len = 0;
- applespi_msg_complete(applespi, packet->flags == PACKET_TYPE_WRITE,
- true);
- }
- static void applespi_async_read_complete(void *context)
- {
- struct applespi_data *applespi = context;
- if (applespi->rd_m.status < 0) {
- dev_warn(&applespi->spi->dev, "Error reading from device: %d\n",
- applespi->rd_m.status);
- /*
- * We don't actually know if this was a pure read, or a response
- * to a write. But this is a rare error condition that should
- * never occur, so clearing both flags to avoid deadlock.
- */
- applespi_msg_complete(applespi, true, true);
- } else {
- applespi_got_data(applespi);
- }
- acpi_finish_gpe(NULL, applespi->gpe);
- }
- static u32 applespi_notify(acpi_handle gpe_device, u32 gpe, void *context)
- {
- struct applespi_data *applespi = context;
- int sts;
- unsigned long flags;
- trace_applespi_irq_received(ET_RD_IRQ, PT_READ);
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- if (!applespi->suspended) {
- sts = applespi_async(applespi, &applespi->rd_m,
- applespi_async_read_complete);
- if (sts)
- dev_warn(&applespi->spi->dev,
- "Error queueing async read to device: %d\n",
- sts);
- else
- applespi->read_active = true;
- }
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- return ACPI_INTERRUPT_HANDLED;
- }
- static int applespi_get_saved_bl_level(struct applespi_data *applespi)
- {
- struct efivar_entry *efivar_entry;
- u16 efi_data = 0;
- unsigned long efi_data_len;
- int sts;
- efivar_entry = kmalloc(sizeof(*efivar_entry), GFP_KERNEL);
- if (!efivar_entry)
- return -ENOMEM;
- memcpy(efivar_entry->var.VariableName, EFI_BL_LEVEL_NAME,
- sizeof(EFI_BL_LEVEL_NAME));
- efivar_entry->var.VendorGuid = EFI_BL_LEVEL_GUID;
- efi_data_len = sizeof(efi_data);
- sts = efivar_entry_get(efivar_entry, NULL, &efi_data_len, &efi_data);
- if (sts && sts != -ENOENT)
- dev_warn(&applespi->spi->dev,
- "Error getting backlight level from EFI vars: %d\n",
- sts);
- kfree(efivar_entry);
- return sts ? sts : efi_data;
- }
- static void applespi_save_bl_level(struct applespi_data *applespi,
- unsigned int level)
- {
- efi_guid_t efi_guid;
- u32 efi_attr;
- unsigned long efi_data_len;
- u16 efi_data;
- int sts;
- /* Save keyboard backlight level */
- efi_guid = EFI_BL_LEVEL_GUID;
- efi_data = (u16)level;
- efi_data_len = sizeof(efi_data);
- efi_attr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS;
- sts = efivar_entry_set_safe((efi_char16_t *)EFI_BL_LEVEL_NAME, efi_guid,
- efi_attr, true, efi_data_len, &efi_data);
- if (sts)
- dev_warn(&applespi->spi->dev,
- "Error saving backlight level to EFI vars: %d\n", sts);
- }
- static int applespi_probe(struct spi_device *spi)
- {
- struct applespi_data *applespi;
- acpi_handle spi_handle = ACPI_HANDLE(&spi->dev);
- acpi_status acpi_sts;
- int sts, i;
- unsigned long long gpe, usb_status;
- /* check if the USB interface is present and enabled already */
- acpi_sts = acpi_evaluate_integer(spi_handle, "UIST", NULL, &usb_status);
- if (ACPI_SUCCESS(acpi_sts) && usb_status) {
- /* let the USB driver take over instead */
- dev_info(&spi->dev, "USB interface already enabled\n");
- return -ENODEV;
- }
- /* allocate driver data */
- applespi = devm_kzalloc(&spi->dev, sizeof(*applespi), GFP_KERNEL);
- if (!applespi)
- return -ENOMEM;
- applespi->spi = spi;
- INIT_WORK(&applespi->work, applespi_worker);
- /* store the driver data */
- spi_set_drvdata(spi, applespi);
- /* create our buffers */
- applespi->tx_buffer = devm_kmalloc(&spi->dev, APPLESPI_PACKET_SIZE,
- GFP_KERNEL);
- applespi->tx_status = devm_kmalloc(&spi->dev, APPLESPI_STATUS_SIZE,
- GFP_KERNEL);
- applespi->rx_buffer = devm_kmalloc(&spi->dev, APPLESPI_PACKET_SIZE,
- GFP_KERNEL);
- applespi->msg_buf = devm_kmalloc_array(&spi->dev, MAX_PKTS_PER_MSG,
- APPLESPI_PACKET_SIZE,
- GFP_KERNEL);
- if (!applespi->tx_buffer || !applespi->tx_status ||
- !applespi->rx_buffer || !applespi->msg_buf)
- return -ENOMEM;
- /* set up our spi messages */
- applespi_setup_read_txfrs(applespi);
- applespi_setup_write_txfrs(applespi);
- /* cache ACPI method handles */
- acpi_sts = acpi_get_handle(spi_handle, "SIEN", &applespi->sien);
- if (ACPI_FAILURE(acpi_sts)) {
- dev_err(&applespi->spi->dev,
- "Failed to get SIEN ACPI method handle: %s\n",
- acpi_format_exception(acpi_sts));
- return -ENODEV;
- }
- acpi_sts = acpi_get_handle(spi_handle, "SIST", &applespi->sist);
- if (ACPI_FAILURE(acpi_sts)) {
- dev_err(&applespi->spi->dev,
- "Failed to get SIST ACPI method handle: %s\n",
- acpi_format_exception(acpi_sts));
- return -ENODEV;
- }
- /* switch on the SPI interface */
- sts = applespi_setup_spi(applespi);
- if (sts)
- return sts;
- sts = applespi_enable_spi(applespi);
- if (sts)
- return sts;
- /* setup the keyboard input dev */
- applespi->keyboard_input_dev = devm_input_allocate_device(&spi->dev);
- if (!applespi->keyboard_input_dev)
- return -ENOMEM;
- applespi->keyboard_input_dev->name = "Apple SPI Keyboard";
- applespi->keyboard_input_dev->phys = "applespi/input0";
- applespi->keyboard_input_dev->dev.parent = &spi->dev;
- applespi->keyboard_input_dev->id.bustype = BUS_SPI;
- applespi->keyboard_input_dev->evbit[0] =
- BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) | BIT_MASK(EV_REP);
- applespi->keyboard_input_dev->ledbit[0] = BIT_MASK(LED_CAPSL);
- input_set_drvdata(applespi->keyboard_input_dev, applespi);
- applespi->keyboard_input_dev->event = applespi_event;
- for (i = 0; i < ARRAY_SIZE(applespi_scancodes); i++)
- if (applespi_scancodes[i])
- input_set_capability(applespi->keyboard_input_dev,
- EV_KEY, applespi_scancodes[i]);
- for (i = 0; i < ARRAY_SIZE(applespi_controlcodes); i++)
- if (applespi_controlcodes[i])
- input_set_capability(applespi->keyboard_input_dev,
- EV_KEY, applespi_controlcodes[i]);
- for (i = 0; i < ARRAY_SIZE(applespi_fn_codes); i++)
- if (applespi_fn_codes[i].to)
- input_set_capability(applespi->keyboard_input_dev,
- EV_KEY, applespi_fn_codes[i].to);
- input_set_capability(applespi->keyboard_input_dev, EV_KEY, KEY_FN);
- sts = input_register_device(applespi->keyboard_input_dev);
- if (sts) {
- dev_err(&applespi->spi->dev,
- "Unable to register keyboard input device (%d)\n", sts);
- return -ENODEV;
- }
- /*
- * The applespi device doesn't send interrupts normally (as is described
- * in its DSDT), but rather seems to use ACPI GPEs.
- */
- acpi_sts = acpi_evaluate_integer(spi_handle, "_GPE", NULL, &gpe);
- if (ACPI_FAILURE(acpi_sts)) {
- dev_err(&applespi->spi->dev,
- "Failed to obtain GPE for SPI slave device: %s\n",
- acpi_format_exception(acpi_sts));
- return -ENODEV;
- }
- applespi->gpe = (int)gpe;
- acpi_sts = acpi_install_gpe_handler(NULL, applespi->gpe,
- ACPI_GPE_LEVEL_TRIGGERED,
- applespi_notify, applespi);
- if (ACPI_FAILURE(acpi_sts)) {
- dev_err(&applespi->spi->dev,
- "Failed to install GPE handler for GPE %d: %s\n",
- applespi->gpe, acpi_format_exception(acpi_sts));
- return -ENODEV;
- }
- applespi->suspended = false;
- acpi_sts = acpi_enable_gpe(NULL, applespi->gpe);
- if (ACPI_FAILURE(acpi_sts)) {
- dev_err(&applespi->spi->dev,
- "Failed to enable GPE handler for GPE %d: %s\n",
- applespi->gpe, acpi_format_exception(acpi_sts));
- acpi_remove_gpe_handler(NULL, applespi->gpe, applespi_notify);
- return -ENODEV;
- }
- /* trigger touchpad setup */
- applespi_init(applespi, false);
- /*
- * By default this device is not enabled for wakeup; but USB keyboards
- * generally are, so the expectation is that by default the keyboard
- * will wake the system.
- */
- device_wakeup_enable(&spi->dev);
- /* set up keyboard-backlight */
- sts = applespi_get_saved_bl_level(applespi);
- if (sts >= 0)
- applespi_set_bl_level(&applespi->backlight_info, sts);
- applespi->backlight_info.name = "spi::kbd_backlight";
- applespi->backlight_info.default_trigger = "kbd-backlight";
- applespi->backlight_info.brightness_set = applespi_set_bl_level;
- sts = devm_led_classdev_register(&spi->dev, &applespi->backlight_info);
- if (sts)
- dev_warn(&applespi->spi->dev,
- "Unable to register keyboard backlight class dev (%d)\n",
- sts);
- /* set up debugfs entries for touchpad dimensions logging */
- applespi->debugfs_root = debugfs_create_dir("applespi", NULL);
- debugfs_create_bool("enable_tp_dim", 0600, applespi->debugfs_root,
- &applespi->debug_tp_dim);
- debugfs_create_file("tp_dim", 0400, applespi->debugfs_root, applespi,
- &applespi_tp_dim_fops);
- return 0;
- }
- static void applespi_drain_writes(struct applespi_data *applespi)
- {
- unsigned long flags;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- applespi->drain = true;
- wait_event_lock_irq(applespi->drain_complete, !applespi->write_active,
- applespi->cmd_msg_lock);
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- }
- static void applespi_drain_reads(struct applespi_data *applespi)
- {
- unsigned long flags;
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- wait_event_lock_irq(applespi->drain_complete, !applespi->read_active,
- applespi->cmd_msg_lock);
- applespi->suspended = true;
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- }
- static int applespi_remove(struct spi_device *spi)
- {
- struct applespi_data *applespi = spi_get_drvdata(spi);
- applespi_drain_writes(applespi);
- acpi_disable_gpe(NULL, applespi->gpe);
- acpi_remove_gpe_handler(NULL, applespi->gpe, applespi_notify);
- device_wakeup_disable(&spi->dev);
- applespi_drain_reads(applespi);
- debugfs_remove_recursive(applespi->debugfs_root);
- return 0;
- }
- static void applespi_shutdown(struct spi_device *spi)
- {
- struct applespi_data *applespi = spi_get_drvdata(spi);
- applespi_save_bl_level(applespi, applespi->have_bl_level);
- }
- static int applespi_poweroff_late(struct device *dev)
- {
- struct spi_device *spi = to_spi_device(dev);
- struct applespi_data *applespi = spi_get_drvdata(spi);
- applespi_save_bl_level(applespi, applespi->have_bl_level);
- return 0;
- }
- static int __maybe_unused applespi_suspend(struct device *dev)
- {
- struct spi_device *spi = to_spi_device(dev);
- struct applespi_data *applespi = spi_get_drvdata(spi);
- acpi_status acpi_sts;
- int sts;
- /* turn off caps-lock - it'll stay on otherwise */
- sts = applespi_set_capsl_led(applespi, false);
- if (sts)
- dev_warn(&applespi->spi->dev,
- "Failed to turn off caps-lock led (%d)\n", sts);
- applespi_drain_writes(applespi);
- /* disable the interrupt */
- acpi_sts = acpi_disable_gpe(NULL, applespi->gpe);
- if (ACPI_FAILURE(acpi_sts))
- dev_err(&applespi->spi->dev,
- "Failed to disable GPE handler for GPE %d: %s\n",
- applespi->gpe, acpi_format_exception(acpi_sts));
- applespi_drain_reads(applespi);
- return 0;
- }
- static int __maybe_unused applespi_resume(struct device *dev)
- {
- struct spi_device *spi = to_spi_device(dev);
- struct applespi_data *applespi = spi_get_drvdata(spi);
- acpi_status acpi_sts;
- unsigned long flags;
- /* ensure our flags and state reflect a newly resumed device */
- spin_lock_irqsave(&applespi->cmd_msg_lock, flags);
- applespi->drain = false;
- applespi->have_cl_led_on = false;
- applespi->have_bl_level = 0;
- applespi->cmd_msg_queued = 0;
- applespi->read_active = false;
- applespi->write_active = false;
- applespi->suspended = false;
- spin_unlock_irqrestore(&applespi->cmd_msg_lock, flags);
- /* switch on the SPI interface */
- applespi_enable_spi(applespi);
- /* re-enable the interrupt */
- acpi_sts = acpi_enable_gpe(NULL, applespi->gpe);
- if (ACPI_FAILURE(acpi_sts))
- dev_err(&applespi->spi->dev,
- "Failed to re-enable GPE handler for GPE %d: %s\n",
- applespi->gpe, acpi_format_exception(acpi_sts));
- /* switch the touchpad into multitouch mode */
- applespi_init(applespi, true);
- return 0;
- }
- static const struct acpi_device_id applespi_acpi_match[] = {
- { "APP000D", 0 },
- { }
- };
- MODULE_DEVICE_TABLE(acpi, applespi_acpi_match);
- static const struct dev_pm_ops applespi_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(applespi_suspend, applespi_resume)
- .poweroff_late = applespi_poweroff_late,
- };
- static struct spi_driver applespi_driver = {
- .driver = {
- .name = "applespi",
- .acpi_match_table = applespi_acpi_match,
- .pm = &applespi_pm_ops,
- },
- .probe = applespi_probe,
- .remove = applespi_remove,
- .shutdown = applespi_shutdown,
- };
- module_spi_driver(applespi_driver)
- MODULE_LICENSE("GPL v2");
- MODULE_DESCRIPTION("MacBook(Pro) SPI Keyboard/Touchpad driver");
- MODULE_AUTHOR("Federico Lorenzi");
- MODULE_AUTHOR("Ronald Tschalär");
|