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Input: cyapa - add gen5 trackpad firmware update support
Add firmware image update support for gen5 trackpad device, it can be used through sysfs update_fw interface. Signed-off-by: Dudley Du <dudl@cypress.com> Tested-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dudley Du
Dmitry Torokhov
parent
e0f79cb799
commit
5812d30672
@ -216,6 +216,7 @@ config MOUSE_BCM5974
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config MOUSE_CYAPA
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tristate "Cypress APA I2C Trackpad support"
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depends on I2C
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select CRC_ITU_T
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help
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This driver adds support for Cypress All Points Addressable (APA)
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I2C Trackpads, including the ones used in 2012 Samsung Chromebooks.
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@ -18,6 +18,7 @@
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#include <linux/completion.h>
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#include <linux/slab.h>
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#include <linux/unaligned/access_ok.h>
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#include <linux/crc-itu-t.h>
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#include "cyapa.h"
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@ -264,6 +265,79 @@ struct cyapa_gen5_report_data {
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struct cyapa_gen5_touch_record touch_records[10];
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} __packed;
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struct cyapa_tsg_bin_image_head {
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u8 head_size; /* Unit: bytes, including itself. */
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u8 ttda_driver_major_version; /* Reserved as 0. */
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u8 ttda_driver_minor_version; /* Reserved as 0. */
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u8 fw_major_version;
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u8 fw_minor_version;
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u8 fw_revision_control_number[8];
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} __packed;
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struct cyapa_tsg_bin_image_data_record {
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u8 flash_array_id;
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__be16 row_number;
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/* The number of bytes of flash data contained in this record. */
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__be16 record_len;
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/* The flash program data. */
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u8 record_data[CYAPA_TSG_FW_ROW_SIZE];
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} __packed;
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struct cyapa_tsg_bin_image {
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struct cyapa_tsg_bin_image_head image_head;
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struct cyapa_tsg_bin_image_data_record records[0];
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} __packed;
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struct gen5_bl_packet_start {
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u8 sop; /* Start of packet, must be 01h */
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u8 cmd_code;
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__le16 data_length; /* Size of data parameter start from data[0] */
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} __packed;
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struct gen5_bl_packet_end {
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__le16 crc;
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u8 eop; /* End of packet, must be 17h */
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} __packed;
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struct gen5_bl_cmd_head {
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__le16 addr; /* Output report register address, must be 0004h */
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/* Size of packet not including output report register address */
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__le16 length;
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u8 report_id; /* Bootloader output report id, must be 40h */
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u8 rsvd; /* Reserved, must be 0 */
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struct gen5_bl_packet_start packet_start;
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u8 data[0]; /* Command data variable based on commands */
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} __packed;
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/* Initiate bootload command data structure. */
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struct gen5_bl_initiate_cmd_data {
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/* Key must be "A5h 01h 02h 03h FFh FEh FDh 5Ah" */
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u8 key[CYAPA_TSG_BL_KEY_SIZE];
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u8 metadata_raw_parameter[CYAPA_TSG_FLASH_MAP_METADATA_SIZE];
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__le16 metadata_crc;
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} __packed;
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struct gen5_bl_metadata_row_params {
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__le16 size;
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__le16 maximun_size;
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__le32 app_start;
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__le16 app_len;
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__le16 app_crc;
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__le32 app_entry;
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__le32 upgrade_start;
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__le16 upgrade_len;
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__le16 entry_row_crc;
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u8 padding[36]; /* Padding data must be 0 */
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__le16 metadata_crc; /* CRC starts at offset of 60 */
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} __packed;
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/* Bootload program and verify row command data structure */
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struct gen5_bl_flash_row_head {
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u8 flash_array_id;
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__le16 flash_row_id;
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u8 flash_data[0];
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} __packed;
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struct gen5_app_cmd_head {
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__le16 addr; /* Output report register address, must be 0004h */
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/* Size of packet not including output report register address */
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@ -297,6 +371,10 @@ struct gen5_app_get_parameter_data {
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#define GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) \
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(((cyapa)->dev_sleep_time) == UNINIT_SLEEP_TIME)
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static u8 cyapa_gen5_bl_cmd_key[] = { 0xa5, 0x01, 0x02, 0x03,
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0xff, 0xfe, 0xfd, 0x5a };
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static int cyapa_gen5_initialize(struct cyapa *cyapa)
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{
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struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
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@ -618,6 +696,22 @@ static bool cyapa_gen5_sort_tsg_pip_app_resp_data(struct cyapa *cyapa,
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return false;
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}
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static bool cyapa_gen5_sort_application_launch_data(struct cyapa *cyapa,
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u8 *buf, int len)
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{
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if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
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return false;
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/*
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* After reset or power on, trackpad device always sets to 0x00 0x00
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* to indicate a reset or power on event.
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*/
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if (buf[0] == 0 && buf[1] == 0)
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return true;
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return false;
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}
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static bool cyapa_gen5_sort_hid_descriptor_data(struct cyapa *cyapa,
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u8 *buf, int len)
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{
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@ -923,6 +1017,80 @@ static int cyapa_gen5_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
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return -EAGAIN;
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}
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static int cyapa_gen5_bl_initiate(struct cyapa *cyapa,
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const struct firmware *fw)
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{
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struct cyapa_tsg_bin_image *image;
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struct gen5_bl_cmd_head *bl_cmd_head;
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struct gen5_bl_packet_start *bl_packet_start;
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struct gen5_bl_initiate_cmd_data *cmd_data;
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struct gen5_bl_packet_end *bl_packet_end;
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u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
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int cmd_len;
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u16 cmd_data_len;
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u16 cmd_crc = 0;
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u16 meta_data_crc = 0;
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u8 resp_data[11];
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int resp_len;
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int records_num;
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u8 *data;
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int error;
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/* Try to dump all buffered report data before any send command. */
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cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
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memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
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bl_cmd_head = (struct gen5_bl_cmd_head *)cmd;
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cmd_data_len = CYAPA_TSG_BL_KEY_SIZE + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE;
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cmd_len = sizeof(struct gen5_bl_cmd_head) + cmd_data_len +
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sizeof(struct gen5_bl_packet_end);
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put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
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put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length);
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bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID;
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bl_packet_start = &bl_cmd_head->packet_start;
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bl_packet_start->sop = GEN5_SOP_KEY;
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bl_packet_start->cmd_code = GEN5_BL_CMD_INITIATE_BL;
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/* 8 key bytes and 128 bytes block size */
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put_unaligned_le16(cmd_data_len, &bl_packet_start->data_length);
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cmd_data = (struct gen5_bl_initiate_cmd_data *)bl_cmd_head->data;
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memcpy(cmd_data->key, cyapa_gen5_bl_cmd_key, CYAPA_TSG_BL_KEY_SIZE);
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/* Copy 60 bytes Meta Data Row Parameters */
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image = (struct cyapa_tsg_bin_image *)fw->data;
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records_num = (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) /
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sizeof(struct cyapa_tsg_bin_image_data_record);
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/* APP_INTEGRITY row is always the last row block */
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data = image->records[records_num - 1].record_data;
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memcpy(cmd_data->metadata_raw_parameter, data,
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CYAPA_TSG_FLASH_MAP_METADATA_SIZE);
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meta_data_crc = crc_itu_t(0xffff, cmd_data->metadata_raw_parameter,
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CYAPA_TSG_FLASH_MAP_METADATA_SIZE);
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put_unaligned_le16(meta_data_crc, &cmd_data->metadata_crc);
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bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data +
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cmd_data_len);
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cmd_crc = crc_itu_t(0xffff, (u8 *)bl_packet_start,
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sizeof(struct gen5_bl_packet_start) + cmd_data_len);
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put_unaligned_le16(cmd_crc, &bl_packet_end->crc);
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bl_packet_end->eop = GEN5_EOP_KEY;
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resp_len = sizeof(resp_data);
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error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
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cmd, cmd_len,
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resp_data, &resp_len, 12000,
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cyapa_gen5_sort_tsg_pip_bl_resp_data, true);
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if (error || resp_len != GEN5_BL_INITIATE_RESP_LEN ||
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resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
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!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
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return error ? error : -EAGAIN;
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return 0;
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}
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static bool cyapa_gen5_sort_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len)
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{
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if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
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@ -973,6 +1141,219 @@ static int cyapa_gen5_bl_exit(struct cyapa *cyapa)
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return -ENODEV;
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}
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static int cyapa_gen5_bl_enter(struct cyapa *cyapa)
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{
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u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2F, 0x00, 0x01 };
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u8 resp_data[2];
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int resp_len;
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int error;
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error = cyapa_poll_state(cyapa, 500);
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if (error < 0)
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return error;
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if (cyapa->gen != CYAPA_GEN5)
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return -EINVAL;
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/* Already in Gen5 BL. Skipping exit. */
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if (cyapa->state == CYAPA_STATE_GEN5_BL)
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return 0;
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if (cyapa->state != CYAPA_STATE_GEN5_APP)
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return -EAGAIN;
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/* Try to dump all buffered report data before any send command. */
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cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
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/*
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* Send bootloader enter command to trackpad device,
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* after enter bootloader, the response data is two bytes of 0x00 0x00.
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*/
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resp_len = sizeof(resp_data);
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memset(resp_data, 0, resp_len);
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error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
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cmd, sizeof(cmd),
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resp_data, &resp_len,
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5000, cyapa_gen5_sort_application_launch_data,
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true);
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if (error || resp_data[0] != 0x00 || resp_data[1] != 0x00)
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return error < 0 ? error : -EAGAIN;
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cyapa->operational = false;
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cyapa->state = CYAPA_STATE_GEN5_BL;
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return 0;
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}
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static int cyapa_gen5_check_fw(struct cyapa *cyapa, const struct firmware *fw)
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{
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struct device *dev = &cyapa->client->dev;
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struct gen5_bl_metadata_row_params metadata;
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struct cyapa_tsg_bin_image *image;
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int flash_records_count;
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u16 app_crc = 0;
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u16 app_integrity_crc = 0;
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u16 row_num;
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u8 *data;
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int record_index;
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int i;
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image = (struct cyapa_tsg_bin_image *)fw->data;
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flash_records_count = (fw->size -
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sizeof(struct cyapa_tsg_bin_image_head)) /
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sizeof(struct cyapa_tsg_bin_image_data_record);
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/* APP_INTEGRITY row is always the last row block,
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* and the row id must be 0x01ff */
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row_num = get_unaligned_be16(
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&image->records[flash_records_count - 1].row_number);
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if (image->records[flash_records_count - 1].flash_array_id != 0x00 &&
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row_num != 0x01ff) {
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dev_err(dev, "%s: invalid app_integrity data.\n", __func__);
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return -EINVAL;
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}
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data = image->records[flash_records_count - 1].record_data;
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metadata.app_start = get_unaligned_le32(&data[4]);
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metadata.app_len = get_unaligned_le16(&data[8]);
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metadata.app_crc = get_unaligned_le16(&data[10]);
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metadata.upgrade_start = get_unaligned_le32(&data[16]);
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metadata.upgrade_len = get_unaligned_le16(&data[20]);
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metadata.metadata_crc = get_unaligned_le16(&data[60]);
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if ((metadata.app_start + metadata.app_len +
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metadata.upgrade_start + metadata.upgrade_len) %
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CYAPA_TSG_FW_ROW_SIZE) {
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dev_err(dev, "%s: invalid image alignment.\n", __func__);
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return -EINVAL;
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}
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/* Verify app_integrity crc */
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app_integrity_crc = crc_itu_t(0xffff, data,
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CYAPA_TSG_APP_INTEGRITY_SIZE);
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if (app_integrity_crc != metadata.metadata_crc) {
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dev_err(dev, "%s: invalid app_integrity crc.\n", __func__);
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return -EINVAL;
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}
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/*
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* Verify application image CRC
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*/
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record_index = metadata.app_start / CYAPA_TSG_FW_ROW_SIZE -
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CYAPA_TSG_IMG_START_ROW_NUM;
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data = (u8 *)&image->records[record_index].record_data;
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app_crc = crc_itu_t(0xffff, data, CYAPA_TSG_FW_ROW_SIZE);
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for (i = 1; i < (metadata.app_len / CYAPA_TSG_FW_ROW_SIZE); i++) {
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data = (u8 *)&image->records[++record_index].record_data;
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app_crc = crc_itu_t(app_crc, data, CYAPA_TSG_FW_ROW_SIZE);
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}
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if (app_crc != metadata.app_crc) {
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dev_err(dev, "%s: invalid firmware app crc check.\n", __func__);
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return -EINVAL;
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}
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return 0;
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}
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static int cyapa_gen5_write_fw_block(struct cyapa *cyapa,
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struct cyapa_tsg_bin_image_data_record *flash_record)
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{
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struct gen5_bl_cmd_head *bl_cmd_head;
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struct gen5_bl_packet_start *bl_packet_start;
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struct gen5_bl_flash_row_head *flash_row_head;
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struct gen5_bl_packet_end *bl_packet_end;
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u8 cmd[CYAPA_TSG_MAX_CMD_SIZE];
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u16 cmd_len;
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u8 flash_array_id;
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u16 flash_row_id;
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u16 record_len;
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u8 *record_data;
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u16 data_len;
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u16 crc;
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u8 resp_data[11];
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int resp_len;
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int error;
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flash_array_id = flash_record->flash_array_id;
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flash_row_id = get_unaligned_be16(&flash_record->row_number);
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record_len = get_unaligned_be16(&flash_record->record_len);
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record_data = flash_record->record_data;
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memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE);
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bl_cmd_head = (struct gen5_bl_cmd_head *)cmd;
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bl_packet_start = &bl_cmd_head->packet_start;
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cmd_len = sizeof(struct gen5_bl_cmd_head) +
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sizeof(struct gen5_bl_flash_row_head) +
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CYAPA_TSG_FLASH_MAP_BLOCK_SIZE +
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sizeof(struct gen5_bl_packet_end);
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put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr);
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/* Don't include 2 bytes register address */
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put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length);
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bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID;
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bl_packet_start->sop = GEN5_SOP_KEY;
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bl_packet_start->cmd_code = GEN5_BL_CMD_PROGRAM_VERIFY_ROW;
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/* 1 (Flash Array ID) + 2 (Flash Row ID) + 128 (flash data) */
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data_len = sizeof(struct gen5_bl_flash_row_head) + record_len;
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put_unaligned_le16(data_len, &bl_packet_start->data_length);
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flash_row_head = (struct gen5_bl_flash_row_head *)bl_cmd_head->data;
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flash_row_head->flash_array_id = flash_array_id;
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put_unaligned_le16(flash_row_id, &flash_row_head->flash_row_id);
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memcpy(flash_row_head->flash_data, record_data, record_len);
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bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data +
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data_len);
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crc = crc_itu_t(0xffff, (u8 *)bl_packet_start,
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sizeof(struct gen5_bl_packet_start) + data_len);
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put_unaligned_le16(crc, &bl_packet_end->crc);
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bl_packet_end->eop = GEN5_EOP_KEY;
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resp_len = sizeof(resp_data);
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error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len,
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resp_data, &resp_len,
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500, cyapa_gen5_sort_tsg_pip_bl_resp_data, true);
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if (error || resp_len != GEN5_BL_BLOCK_WRITE_RESP_LEN ||
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resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
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!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
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return error < 0 ? error : -EAGAIN;
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return 0;
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}
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static int cyapa_gen5_do_fw_update(struct cyapa *cyapa,
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const struct firmware *fw)
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{
|
||||
struct device *dev = &cyapa->client->dev;
|
||||
struct cyapa_tsg_bin_image_data_record *flash_record;
|
||||
struct cyapa_tsg_bin_image *image =
|
||||
(struct cyapa_tsg_bin_image *)fw->data;
|
||||
int flash_records_count;
|
||||
int i;
|
||||
int error;
|
||||
|
||||
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];
|
||||
error = cyapa_gen5_write_fw_block(cyapa, flash_record);
|
||||
if (error) {
|
||||
dev_err(dev, "%s: Gen5 FW update aborted: %d\n",
|
||||
__func__, error);
|
||||
return error;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cyapa_gen5_change_power_state(struct cyapa *cyapa, u8 power_state)
|
||||
{
|
||||
u8 cmd[8] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 0x08, 0x01 };
|
||||
@ -1665,7 +2046,17 @@ static int cyapa_gen5_irq_handler(struct cyapa *cyapa)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cyapa_gen5_bl_activate(struct cyapa *cyapa) { return 0; }
|
||||
static int cyapa_gen5_bl_deactivate(struct cyapa *cyapa) { return 0; }
|
||||
|
||||
const struct cyapa_dev_ops cyapa_gen5_ops = {
|
||||
.check_fw = cyapa_gen5_check_fw,
|
||||
.bl_enter = cyapa_gen5_bl_enter,
|
||||
.bl_initiate = cyapa_gen5_bl_initiate,
|
||||
.update_fw = cyapa_gen5_do_fw_update,
|
||||
.bl_activate = cyapa_gen5_bl_activate,
|
||||
.bl_deactivate = cyapa_gen5_bl_deactivate,
|
||||
|
||||
.initialize = cyapa_gen5_initialize,
|
||||
|
||||
.state_parse = cyapa_gen5_state_parse,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user