Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932106AbaF3Go5 (ORCPT ); Mon, 30 Jun 2014 02:44:57 -0400 Received: from relay-s04-hub004.domainlocalhost.com ([74.115.207.103]:23849 "EHLO relay-S04-HUB004.domainlocalhost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754281AbaF3Gow (ORCPT ); Mon, 30 Jun 2014 02:44:52 -0400 From: Dudley Du To: Alan Stern , Dmitry Torokhov , "patrikf@google.com" , "Rafael J. Wysocki" CC: Benson Leung , Daniel Kurtz , "linux-input@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH v2 11/14] input: cyapa: add gen5 trackpad device firmware update function supported Thread-Topic: [PATCH v2 11/14] input: cyapa: add gen5 trackpad device firmware update function supported Thread-Index: Ac+ULsjRaaCECFTwSoaM0yxAKCgPvQ== Date: Mon, 30 Jun 2014 06:44:50 +0000 Message-ID: <77BC725C9062764F874D79F51E1F1A8F4C902CC2@S04-MBX01-01.s04.local> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.30.12.155] Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id s5U6j5XF009606 Add firmware image update function supported for gen5 trackpad device, which its function is supplied through cyapa core update_fw interface. TEST=test on Chomebooks. Signed-off-by: Du, Dudley --- diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig index 6b8441f..e484569 100644 --- a/drivers/input/mouse/Kconfig +++ b/drivers/input/mouse/Kconfig @@ -205,7 +205,7 @@ config MOUSE_BCM5974 config MOUSE_CYAPA tristate "Cypress APA I2C Trackpad support" - depends on I2C + depends on I2C && CRC_ITU_T help This driver adds support for Cypress All Points Addressable (APA) I2C Trackpads, including the ones used in 2012 Samsung Chromebooks. diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c index 00ca3a6..e720eed 100644 --- a/drivers/input/mouse/cyapa_gen5.c +++ b/drivers/input/mouse/cyapa_gen5.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "cyapa.h" @@ -856,6 +857,86 @@ out: return -EAGAIN; } +static int cyapa_gen5_bl_initiate(struct cyapa *cyapa, + const struct firmware *fw) +{ + int ret = 0; + u16 length = 0; + u16 data_len = 0; + u16 meta_data_crc = 0; + u16 cmd_crc = 0; + u8 bl_gen5_activate[18 + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE + 3]; + int bl_gen5_activate_size = 0; + u8 resp_data[11]; + int resp_len; + struct cyapa_tsg_bin_image *image; + int records_num; + u8 *data; + + /* Try to dump all bufferred report data before send any command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + bl_gen5_activate_size = sizeof(bl_gen5_activate); + memset(bl_gen5_activate, 0, bl_gen5_activate_size); + + /* Output Report Register Address[15:0] = 0004h */ + bl_gen5_activate[0] = 0x04; + bl_gen5_activate[1] = 0x00; + + /* totoal command length[15:0] */ + length = bl_gen5_activate_size - 2; + put_unaligned_le16(length, &bl_gen5_activate[2]); + bl_gen5_activate[4] = 0x40; /* Report ID = 40h */ + bl_gen5_activate[5] = 0x00; /* RSVD = 00h */ + + bl_gen5_activate[6] = GEN5_SOP_KEY; /* SOP = 01h */ + bl_gen5_activate[7] = 0x48; /* Command Code = 48h */ + + /* 8 Key bytes and block size */ + data_len = CYAPA_TSG_BL_KEY_SIZE + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE; + /* Data Length[15:0] */ + put_unaligned_le16(data_len, &bl_gen5_activate[8]); + bl_gen5_activate[10] = 0xa5; /* Key Byte 0 */ + bl_gen5_activate[11] = 0x01; + bl_gen5_activate[12] = 0x02; /* . */ + bl_gen5_activate[13] = 0x03; /* . */ + bl_gen5_activate[14] = 0xff; /* . */ + bl_gen5_activate[15] = 0xfe; + bl_gen5_activate[16] = 0xfd; + bl_gen5_activate[17] = 0x5a; /* Key Byte 7 */ + + /* copy 60 bytes Meta Data Row Parameters */ + image = (struct cyapa_tsg_bin_image *)fw->data; + records_num = (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) / + sizeof(struct cyapa_tsg_bin_image_data_record); + /* APP_INTEGRITY row is always the last row block */ + data = image->records[records_num - 1].record_data; + memcpy(&bl_gen5_activate[18], data, CYAPA_TSG_FLASH_MAP_METADATA_SIZE); + + meta_data_crc = crc_itu_t(0xffff, &bl_gen5_activate[18], + CYAPA_TSG_FLASH_MAP_METADATA_SIZE); + /* Meta Data CRC[15:0] */ + put_unaligned_le16(meta_data_crc, + &bl_gen5_activate[18 + CYAPA_TSG_FLASH_MAP_METADATA_SIZE]); + + cmd_crc = crc_itu_t(0xffff, &bl_gen5_activate[6], 4 + data_len); + put_unaligned_le16(cmd_crc, + &bl_gen5_activate[bl_gen5_activate_size - 3]); /* CRC[15:0] */ + bl_gen5_activate[bl_gen5_activate_size - 1] = GEN5_EOP_KEY; + + resp_len = sizeof(resp_data); + ret = cyapa_i2c_pip_cmd_irq_sync(cyapa, + bl_gen5_activate, sizeof(bl_gen5_activate), + resp_data, &resp_len, 12000, + cyapa_gen5_sort_tsg_pip_bl_resp_data); + if (ret || resp_len != GEN5_BL_INITIATE_RESP_LEN || + resp_data[2] != GEN5_BL_RESP_REPORT_ID || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return (ret < 0) ? ret : -EAGAIN; + + return 0; +} + bool cyapa_gen5_sort_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len) { if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE) @@ -902,6 +983,216 @@ static int cyapa_gen5_bl_exit(struct cyapa *cyapa) return -EAGAIN; } +static int cyapa_gen5_bl_enter(struct cyapa *cyapa) +{ + int ret; + u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2F, 0x00, 0x01 }; + u8 resp_data[2]; + int resp_len; + + if (cyapa->input) { + cyapa_disable_irq(cyapa); + input_unregister_device(cyapa->input); + cyapa->input = NULL; + } + cyapa_enable_irq(cyapa); + + ret = cyapa_poll_state(cyapa, 500); + if (ret < 0) + return ret; + if (cyapa->gen != CYAPA_GEN5) + return -EINVAL; + + /* Already in Gen5 BL. Skipping exit. */ + if (cyapa->state == CYAPA_STATE_GEN5_BL) + return 0; + + if (cyapa->state != CYAPA_STATE_GEN5_APP) + return -EAGAIN; + + /* Try to dump all bufferred report data before send any command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + /* + * send bootloader enter command to trackpad device, + * after enter bootloader, the response data is two bytes of 0x00 0x00. + */ + resp_len = sizeof(resp_data); + memset(resp_data, 0, resp_len); + ret = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 5000, cyapa_gen5_sort_application_launch_data); + if (ret || resp_data[0] != 0x00 || resp_data[1] != 0x00) + return (ret < 0) ? ret : -EAGAIN; + + cyapa->state = CYAPA_STATE_GEN5_BL; + return 0; +} + +static int cyapa_gen5_check_fw(struct cyapa *cyapa, const struct firmware *fw) +{ + int i; + struct cyapa_tsg_bin_image *image; + int flash_records_count; + u16 expected_app_crc; + u16 expected_app_integrity_crc; + u16 app_crc = 0; + u16 app_integrity_crc = 0; + u16 row_num; + u8 *data; + u32 app_start; + u16 app_len; + u32 img_start; + u16 img_len; + int record_index; + struct device *dev = &cyapa->client->dev; + + image = (struct cyapa_tsg_bin_image *)fw->data; + flash_records_count = (fw->size - + sizeof(struct cyapa_tsg_bin_image_head)) / + sizeof(struct cyapa_tsg_bin_image_data_record); + + /* APP_INTEGRITY row is always the last row block, + * and the row id must be 0x01ff */ + row_num = get_unaligned_be16( + &image->records[flash_records_count - 1].row_number); + if (&image->records[flash_records_count - 1].flash_array_id != 0x00 && + row_num != 0x01ff) { + dev_err(dev, "%s: invaid app_integrity data.\n", __func__); + return -EINVAL; + } + data = image->records[flash_records_count - 1].record_data; + app_start = get_unaligned_le32(&data[4]); + app_len = get_unaligned_le16(&data[8]); + expected_app_crc = get_unaligned_le16(&data[10]); + img_start = get_unaligned_le32(&data[16]); + img_len = get_unaligned_le16(&data[20]); + expected_app_integrity_crc = get_unaligned_le16(&data[60]); + + if ((app_start + app_len + img_start + img_len) % + CYAPA_TSG_FW_ROW_SIZE) { + dev_err(dev, "%s: invaid image alignment.\n", __func__); + return -EINVAL; + } + + /* verify app_integrity crc */ + app_integrity_crc = crc_itu_t(0xffff, data, + CYAPA_TSG_APP_INTEGRITY_SIZE); + if (app_integrity_crc != expected_app_integrity_crc) { + dev_err(dev, "%s: invaid app_integrity crc.\n", __func__); + return -EINVAL; + } + + /* + * verify application image CRC + */ + record_index = app_start / CYAPA_TSG_FW_ROW_SIZE - + CYAPA_TSG_IMG_START_ROW_NUM; + data = (u8 *)&image->records[record_index].record_data; + app_crc = crc_itu_t(0xffff, data, CYAPA_TSG_FW_ROW_SIZE); + for (i = 1; i < (app_len / CYAPA_TSG_FW_ROW_SIZE); i++) { + data = (u8 *)&image->records[++record_index].record_data; + app_crc = crc_itu_t(app_crc, data, CYAPA_TSG_FW_ROW_SIZE); + } + + if (app_crc != expected_app_crc) { + dev_err(dev, "%s: invaid firmware app crc check.\n", __func__); + return -EINVAL; + } + + return 0; +} + +static int cyapa_gen5_write_fw_block(struct cyapa *cyapa, + struct cyapa_tsg_bin_image_data_record *flash_record) +{ + u8 flash_array_id; + u16 flash_row_id; + u16 record_len; + u8 *record_data; + u8 cmd[144]; /* 13 + 128+ 3 */ + u16 cmd_len; + u16 data_len; + u16 crc; + u8 resp_data[11]; + int resp_len; + int ret; + + flash_array_id = flash_record->flash_array_id; + flash_row_id = get_unaligned_be16(&flash_record->row_number); + record_len = get_unaligned_be16(&flash_record->record_len); + record_data = flash_record->record_data; + + cmd_len = sizeof(cmd) - 2; /* not include 2 bytes regisetr address. */ + memset(cmd, 0, cmd_len + 2); + cmd[0] = 0x04; /* register address */ + cmd[1] = 0x00; + + put_unaligned_le16(cmd_len, &cmd[2]); + cmd[4] = 0x40; /* report id 40h */ + cmd[5] = 0x00; + + cmd[6] = GEN5_SOP_KEY; /* SOP = 01h */ + cmd[7] = 0x39; /* command code = 39h */ + /* 1 (Flash Array ID) + 2 (Flash Row ID) + 128 (flash data) */ + data_len = 3 + record_len; + put_unaligned_le16(data_len, &cmd[8]); + cmd[10] = flash_array_id; /* Flash Array ID = 00h */ + put_unaligned_le16(flash_row_id, &cmd[11]); + + memcpy(&cmd[13], record_data, record_len); + crc = crc_itu_t(0xffff, &cmd[6], 4 + data_len); + put_unaligned_le16(crc, &cmd[2 + cmd_len - 3]); + cmd[2 + cmd_len - 1] = GEN5_EOP_KEY; + + resp_len = sizeof(resp_data); + ret = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_bl_resp_data); + if (ret || resp_len != GEN5_BL_BLOCK_WRITE_RESP_LEN || + resp_data[2] != GEN5_BL_RESP_REPORT_ID || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return ret < 0 ? ret : -EAGAIN; + + return 0; +} + +static int cyapa_gen5_do_fw_update(struct cyapa *cyapa, + const struct firmware *fw) +{ + struct device *dev = &cyapa->client->dev; + struct cyapa_tsg_bin_image *image = + (struct cyapa_tsg_bin_image *)fw->data; + struct cyapa_tsg_bin_image_data_record *flash_record; + int flash_records_count; + int i; + int ret; + + /* Try to dump all bufferred data if exists before send commands. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + flash_records_count = + (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) / + sizeof(struct cyapa_tsg_bin_image_data_record); + /* + * the last flash row 0x01ff has been written through bl_initiate + * command, so DO NOT write flash 0x01ff to trackpad device. + */ + for (i = 0; i < (flash_records_count - 1); i++) { + flash_record = &image->records[i]; + ret = cyapa_gen5_write_fw_block(cyapa, flash_record); + if (ret) { + dev_err(dev, "%s: Gen5 FW update aborted, %d\n", + __func__, ret); + return ret; + } + } + + return 0; +} + static int cyapa_gen5_change_power_state(struct cyapa *cyapa, u8 power_state) { int ret; @@ -1568,11 +1859,11 @@ static void cyapa_gen5_irq_handler(struct cyapa *cyapa) } const struct cyapa_dev_ops cyapa_gen5_ops = { + cyapa_gen5_check_fw, + cyapa_gen5_bl_enter, NULL, - NULL, - NULL, - NULL, - NULL, + cyapa_gen5_bl_initiate, + cyapa_gen5_do_fw_update, NULL, NULL, This message and any attachments may contain Cypress (or its subsidiaries) confidential information. 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