diff options
Diffstat (limited to 'extra/touchpad_updater/touchpad_updater.c')
| -rw-r--r-- | extra/touchpad_updater/touchpad_updater.c | 166 |
1 files changed, 78 insertions, 88 deletions
diff --git a/extra/touchpad_updater/touchpad_updater.c b/extra/touchpad_updater/touchpad_updater.c index 716ded00f5..fee898ca06 100644 --- a/extra/touchpad_updater/touchpad_updater.c +++ b/extra/touchpad_updater/touchpad_updater.c @@ -1,5 +1,5 @@ /* - * Copyright 2017 The Chromium OS Authors. All rights reserved. + * Copyright 2017 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -18,16 +18,16 @@ #include <libusb.h> /* Command line options */ -static uint16_t vid = 0x18d1; /* Google */ -static uint16_t pid = 0x5022; /* Hammer */ -static uint8_t ep_num = 4; /* console endpoint */ -static uint8_t extended_i2c_exercise; /* non-zero to exercise */ -static char *firmware_binary = "144.0_2.0.bin"; /* firmware blob */ +static uint16_t vid = 0x18d1; /* Google */ +static uint16_t pid = 0x5022; /* Hammer */ +static uint8_t ep_num = 4; /* console endpoint */ +static uint8_t extended_i2c_exercise; /* non-zero to exercise */ +static char *firmware_binary = "144.0_2.0.bin"; /* firmware blob */ /* Firmware binary blob related */ -#define MAX_FW_PAGE_SIZE 512 -#define MAX_FW_PAGE_COUNT 1024 -#define MAX_FW_SIZE (128 * 1024) +#define MAX_FW_PAGE_SIZE 512 +#define MAX_FW_PAGE_COUNT 1024 +#define MAX_FW_SIZE (128 * 1024) static uint8_t fw_data[MAX_FW_SIZE]; int fw_page_count; @@ -47,13 +47,10 @@ static char *progname; static char *short_opts = ":f:v:p:e:hd"; static const struct option long_opts[] = { /* name hasarg *flag val */ - {"file", 1, NULL, 'f'}, - {"vid", 1, NULL, 'v'}, - {"pid", 1, NULL, 'p'}, - {"ep", 1, NULL, 'e'}, - {"help", 0, NULL, 'h'}, - {"debug", 0, NULL, 'd'}, - {NULL, 0, NULL, 0}, + { "file", 1, NULL, 'f' }, { "vid", 1, NULL, 'v' }, + { "pid", 1, NULL, 'p' }, { "ep", 1, NULL, 'e' }, + { "help", 0, NULL, 'h' }, { "debug", 0, NULL, 'd' }, + { NULL, 0, NULL, 0 }, }; static void usage(int errs) @@ -71,7 +68,8 @@ static void usage(int errs) " -d,--debug Exercise extended read I2C over USB\n" " and print verbose debug messages.\n" " -h,--help Show this message\n" - "\n", progname, firmware_binary, vid, pid, ep_num); + "\n", + progname, firmware_binary, vid, pid, ep_num); exit(!!errs); } @@ -87,28 +85,28 @@ static void parse_cmdline(int argc, char *argv[]) else progname = argv[0]; - opterr = 0; /* quiet, you */ + opterr = 0; /* quiet, you */ while ((i = getopt_long(argc, argv, short_opts, long_opts, 0)) != -1) { switch (i) { case 'f': firmware_binary = optarg; break; case 'p': - pid = (uint16_t) strtoull(optarg, &e, 16); + pid = (uint16_t)strtoull(optarg, &e, 16); if (!*optarg || (e && *e)) { printf("Invalid argument: \"%s\"\n", optarg); errorcnt++; } break; case 'v': - vid = (uint16_t) strtoull(optarg, &e, 16); + vid = (uint16_t)strtoull(optarg, &e, 16); if (!*optarg || (e && *e)) { printf("Invalid argument: \"%s\"\n", optarg); errorcnt++; } break; case 'e': - ep_num = (uint8_t) strtoull(optarg, &e, 0); + ep_num = (uint8_t)strtoull(optarg, &e, 0); if (!*optarg || (e && *e)) { printf("Invalid argument: \"%s\"\n", optarg); errorcnt++; @@ -120,7 +118,7 @@ static void parse_cmdline(int argc, char *argv[]) case 'h': usage(errorcnt); break; - case 0: /* auto-handled option */ + case 0: /* auto-handled option */ break; case '?': if (optopt) @@ -142,7 +140,6 @@ static void parse_cmdline(int argc, char *argv[]) if (errorcnt) usage(errorcnt); - } /* USB transfer related */ @@ -163,7 +160,7 @@ static void request_exit(const char *format, ...) va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap); - do_exit++; /* Why need this ? */ + do_exit++; /* Why need this ? */ if (tx_transfer) libusb_free_transfer(tx_transfer); @@ -178,9 +175,8 @@ static void request_exit(const char *format, ...) exit(1); } -#define DIE(msg, r) \ - request_exit("%s: line %d, %s\n", msg, __LINE__, \ - libusb_error_name(r)) +#define DIE(msg, r) \ + request_exit("%s: line %d, %s\n", msg, __LINE__, libusb_error_name(r)) static void sighandler(int signum) { @@ -259,8 +255,8 @@ static void register_sigaction(void) } /* Transfer over libusb */ -#define I2C_PORT_ON_HAMMER 0x00 -#define I2C_ADDRESS_ON_HAMMER 0x15 +#define I2C_PORT_ON_HAMMER 0x00 +#define I2C_ADDRESS_ON_HAMMER 0x15 static int check_read_status(int r, int expected, int actual) { @@ -291,12 +287,12 @@ static int check_read_status(int r, int expected, int actual) return r; } -#define MAX_USB_PACKET_SIZE 64 -#define PRIMITIVE_READING_SIZE 60 +#define MAX_USB_PACKET_SIZE 64 +#define PRIMITIVE_READING_SIZE 60 -static int libusb_single_write_and_read( - const uint8_t *to_write, uint16_t write_length, - uint8_t *to_read, uint16_t read_length) +static int libusb_single_write_and_read(const uint8_t *to_write, + uint16_t write_length, uint8_t *to_read, + uint16_t read_length) { int r; int tx_ready; @@ -315,10 +311,10 @@ static int libusb_single_write_and_read( tx_buf[4] = read_length >> 7; if (extended_i2c_exercise) { printf("Triggering extended reading." - "rc:%0x, rc1:%0x\n", - tx_buf[3], tx_buf[4]); + "rc:%0x, rc1:%0x\n", + tx_buf[3], tx_buf[4]); printf("Expecting %d Bytes.\n", - (tx_buf[3] & 0x7f) | (tx_buf[4] << 7)); + (tx_buf[3] & 0x7f) | (tx_buf[4] << 7)); } } else { tx_buf[3] = read_length; @@ -331,19 +327,18 @@ static int libusb_single_write_and_read( while (sent_bytes < (offset + write_length)) { tx_ready = remains = (offset + write_length) - sent_bytes; - r = libusb_bulk_transfer(devh, - (ep_num | LIBUSB_ENDPOINT_OUT), - tx_buf + sent_bytes, tx_ready, - &actual_length, 5000); + r = libusb_bulk_transfer(devh, (ep_num | LIBUSB_ENDPOINT_OUT), + tx_buf + sent_bytes, tx_ready, + &actual_length, 5000); if (r == 0 && actual_length == tx_ready) { r = libusb_bulk_transfer(devh, - (ep_num | LIBUSB_ENDPOINT_IN), - rx_buf, sizeof(rx_buf), - &actual_length, 5000); + (ep_num | LIBUSB_ENDPOINT_IN), + rx_buf, sizeof(rx_buf), + &actual_length, 5000); } - r = check_read_status( - r, (remains == tx_ready) ? read_length : 0, - actual_length); + r = check_read_status(r, + (remains == tx_ready) ? read_length : 0, + actual_length); if (r) break; sent_bytes += tx_ready; @@ -352,21 +347,19 @@ static int libusb_single_write_and_read( } /* Control Elan trackpad I2C over USB */ -#define ETP_I2C_INF_LENGTH 2 +#define ETP_I2C_INF_LENGTH 2 -static int elan_write_and_read( - int reg, uint8_t *buf, int read_length, - int with_cmd, int cmd) +static int elan_write_and_read(int reg, uint8_t *buf, int read_length, + int with_cmd, int cmd) { - tx_buf[0] = (reg >> 0) & 0xff; tx_buf[1] = (reg >> 8) & 0xff; if (with_cmd) { tx_buf[2] = (cmd >> 0) & 0xff; tx_buf[3] = (cmd >> 8) & 0xff; } - return libusb_single_write_and_read( - tx_buf, with_cmd ? 4 : 2, rx_buf, read_length); + return libusb_single_write_and_read(tx_buf, with_cmd ? 4 : 2, rx_buf, + read_length); } static int elan_read_block(int reg, uint8_t *buf, int read_length) @@ -385,16 +378,16 @@ static int elan_write_cmd(int reg, int cmd) } /* Elan trackpad firmware information related */ -#define ETP_I2C_IAP_VERSION_CMD 0x0110 -#define ETP_I2C_FW_VERSION_CMD 0x0102 -#define ETP_I2C_IAP_CHECKSUM_CMD 0x0315 -#define ETP_I2C_FW_CHECKSUM_CMD 0x030F -#define ETP_I2C_OSM_VERSION_CMD 0x0103 +#define ETP_I2C_IAP_VERSION_CMD 0x0110 +#define ETP_I2C_FW_VERSION_CMD 0x0102 +#define ETP_I2C_IAP_CHECKSUM_CMD 0x0315 +#define ETP_I2C_FW_CHECKSUM_CMD 0x030F +#define ETP_I2C_OSM_VERSION_CMD 0x0103 static int elan_get_version(int is_iap) { - elan_read_cmd( - is_iap ? ETP_I2C_IAP_VERSION_CMD : ETP_I2C_FW_VERSION_CMD); + elan_read_cmd(is_iap ? ETP_I2C_IAP_VERSION_CMD : + ETP_I2C_FW_VERSION_CMD); return le_bytes_to_int(rx_buf + 4); } @@ -435,8 +428,8 @@ static void elan_get_ic_page_count(void) static int elan_get_checksum(int is_iap) { - elan_read_cmd( - is_iap ? ETP_I2C_IAP_CHECKSUM_CMD : ETP_I2C_FW_CHECKSUM_CMD); + elan_read_cmd(is_iap ? ETP_I2C_IAP_CHECKSUM_CMD : + ETP_I2C_FW_CHECKSUM_CMD); return le_bytes_to_int(rx_buf + 4); } @@ -451,21 +444,21 @@ static uint16_t elan_get_fw_info(void) iap_checksum = elan_get_checksum(1); fw_version = elan_get_version(0); iap_version = elan_get_version(1); - printf("IAP version: %4x, FW version: %4x\n", - iap_version, fw_version); - printf("IAP checksum: %4x, FW checksum: %4x\n", - iap_checksum, fw_checksum); + printf("IAP version: %4x, FW version: %4x\n", iap_version, + fw_version); + printf("IAP checksum: %4x, FW checksum: %4x\n", iap_checksum, + fw_checksum); return fw_checksum; } /* Update preparation */ -#define ETP_I2C_IAP_RESET_CMD 0x0314 -#define ETP_I2C_IAP_RESET 0xF0F0 -#define ETP_I2C_IAP_CTRL_CMD 0x0310 -#define ETP_I2C_MAIN_MODE_ON (1 << 9) -#define ETP_I2C_IAP_CMD 0x0311 -#define ETP_I2C_IAP_PASSWORD 0x1EA5 -#define ETP_I2C_IAP_TYPE_CMD 0x0304 +#define ETP_I2C_IAP_RESET_CMD 0x0314 +#define ETP_I2C_IAP_RESET 0xF0F0 +#define ETP_I2C_IAP_CTRL_CMD 0x0310 +#define ETP_I2C_MAIN_MODE_ON (1 << 9) +#define ETP_I2C_IAP_CMD 0x0311 +#define ETP_I2C_IAP_PASSWORD 0x1EA5 +#define ETP_I2C_IAP_TYPE_CMD 0x0304 static int elan_in_main_mode(void) { @@ -478,8 +471,7 @@ static int elan_read_write_iap_type(void) for (int retry = 0; retry < 3; ++retry) { uint16_t val; - if (elan_write_cmd(ETP_I2C_IAP_TYPE_CMD, - fw_page_size / 2)) + if (elan_write_cmd(ETP_I2C_IAP_TYPE_CMD, fw_page_size / 2)) return -1; if (elan_read_cmd(ETP_I2C_IAP_TYPE_CMD)) @@ -490,7 +482,6 @@ static int elan_read_write_iap_type(void) printf("%s: OK\n", __func__); return 0; } - } return -1; } @@ -528,17 +519,17 @@ static void elan_prepare_for_update(void) request_exit("cannot read iap password.\n"); if (le_bytes_to_int(rx_buf + 4) != ETP_I2C_IAP_PASSWORD) request_exit("Got an unexpected IAP password %4x\n", - le_bytes_to_int(rx_buf + 4)); + le_bytes_to_int(rx_buf + 4)); } /* Firmware block update */ -#define ETP_IAP_START_ADDR 0x0083 +#define ETP_IAP_START_ADDR 0x0083 static uint16_t elan_calc_checksum(uint8_t *data, int length) { uint16_t checksum = 0; for (int i = 0; i < length; i += 2) - checksum += ((uint16_t)(data[i+1]) << 8) | (data[i]); + checksum += ((uint16_t)(data[i + 1]) << 8) | (data[i]); return checksum; } @@ -547,11 +538,11 @@ static int elan_get_iap_addr(void) return le_bytes_to_int(fw_data + ETP_IAP_START_ADDR * 2) * 2; } -#define ETP_I2C_IAP_REG_L 0x01 -#define ETP_I2C_IAP_REG_H 0x06 +#define ETP_I2C_IAP_REG_L 0x01 +#define ETP_I2C_IAP_REG_H 0x06 -#define ETP_FW_IAP_PAGE_ERR (1 << 5) -#define ETP_FW_IAP_INTF_ERR (1 << 4) +#define ETP_FW_IAP_PAGE_ERR (1 << 5) +#define ETP_FW_IAP_INTF_ERR (1 << 4) static int elan_write_fw_block(uint8_t *raw_data, uint16_t checksum) { @@ -564,8 +555,8 @@ static int elan_write_fw_block(uint8_t *raw_data, uint16_t checksum) page_store[fw_page_size + 2 + 0] = (checksum >> 0) & 0xff; page_store[fw_page_size + 2 + 1] = (checksum >> 8) & 0xff; - rv = libusb_single_write_and_read( - page_store, fw_page_size + 4, rx_buf, 0); + rv = libusb_single_write_and_read(page_store, fw_page_size + 4, rx_buf, + 0); if (rv) return rv; usleep((fw_page_size >= 512 ? 50 : 35) * 1000); @@ -578,7 +569,6 @@ static int elan_write_fw_block(uint8_t *raw_data, uint16_t checksum) return 0; } - static uint16_t elan_update_firmware(void) { uint16_t checksum = 0, block_checksum; @@ -661,7 +651,7 @@ int main(int argc, char *argv[]) remote_checksum = elan_get_checksum(1); if (remote_checksum != local_checksum) printf("checksum diff local=[%04X], remote=[%04X]\n", - local_checksum, remote_checksum); + local_checksum, remote_checksum); /* Print the updated firmware information */ elan_get_fw_info(); |