Add firmware image update function supported for gen5 trackpad device,
it can be used through sysfs update_fw interface.
TEST=test on Chromebooks.
Signed-off-by: Dudley Du
---
drivers/input/mouse/Kconfig | 1 +
drivers/input/mouse/cyapa_gen5.c | 391 +++
2 files changed, 392 insertions(+)
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index d8b46b0..728490e 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -206,6 +206,7 @@ config MOUSE_BCM5974
config MOUSE_CYAPA
tristate "Cypress APA I2C Trackpad support"
depends on I2C
+ select 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 a049ae3..442b29d 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"
@@ -264,6 +265,79 @@ struct cyapa_gen5_report_data {
struct cyapa_gen5_touch_record touch_records[10];
} __packed;
+struct cyapa_tsg_bin_image_head {
+ u8 head_size; /* Unit: bytes, including itself. */
+ u8 ttda_driver_major_version; /* Reserved as 0. */
+ u8 ttda_driver_minor_version; /* Reserved as 0. */
+ u8 fw_major_version;
+ u8 fw_minor_version;
+ u8 fw_revision_control_number[8];
+} __packed;
+
+struct cyapa_tsg_bin_image_data_record {
+ u8 flash_array_id;
+ __be16 row_number;
+ /* The number of bytes of flash data contained in this record. */
+ __be16 record_len;
+ /* The flash program data. */
+ u8 record_data[CYAPA_TSG_FW_ROW_SIZE];
+} __packed;
+
+struct cyapa_tsg_bin_image {
+ struct cyapa_tsg_bin_image_head image_head;
+ struct cyapa_tsg_bin_image_data_record records[0];
+} __packed;
+
+struct gen5_bl_packet_start {
+ u8 sop; /* Start of packet, must be 01h */
+ u8 cmd_code;
+ __le16 data_length; /* Size of data parameter start from data[0] */
+} __packed;
+
+struct gen5_bl_packet_end {
+ __le16 crc;
+ u8 eop; /* End of packet, must be 17h */
+} __packed;
+
+struct gen5_bl_cmd_head {
+ __le16 addr; /* Output report register address, must be 0004h */
+ /* Size of packet not including output report register address */
+ __le16 length;
+ u8 report_id; /* Bootloader output report id, must be 40h */
+ u8 rsvd; /* Reserved, must be 0 */
+ struct gen5_bl_packet_start packet_start;
+ u8 data[0]; /* Command data variable based on commands */
+} __packed;
+
+/* Initiate bootload command data structure. */
+struct gen5_bl_initiate_cmd_data {
+ /* Key must be "A5h 01h 02h 03h FFh FEh FDh 5Ah" */
+ u8 key[CYAPA_TSG_BL_KEY_SIZE];
+ u8 metadata_raw_parameter[CYAPA_TSG_FLASH_MAP_METADATA_SIZE];
+ __le16 metadata_crc;
+} __packed;
+
+struct gen5_bl_metadata_row_params {
+ __le16 size;
+ __le16 maximun_size;
+ __le32 app_start;
+ __le16 app_len;
+ __le16 app_crc;
+ __le32 app_entry;
+ __le32 upgrade_start;
+ __le16 upgrade_len;
+ __le16 entry_row_crc;
+ u8 padding[36]; /* Padding data must be 0 */
+ __le16 metadata_crc; /* CRC starts at offset of 60 */
+} __packed;
+
+/* Bootload program and verify row command data structure */
+struct gen5_bl_flash_row_head {
+ u8 flash_array_id;
+ __le16 flash_row_id;
+ u8 flash_data[0];
+} __packed;
+
struct gen5_app_cmd_head {
__le16 addr; /* Output report register address, must be 0004h */
/* Size of packet not including output report register address */
@@ -297,6 +371,10 @@ struct gen5_app_get_parameter_data {
#define GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) \
(((cyapa)->dev_sleep_time) == UNINIT_SLEEP_TIME)
+
+static u8 cyapa_gen5_bl_cmd_key[] = { 0xa5, 0x01, 0x02, 0x03,
+ 0xff, 0xfe, 0xfd, 0x5a };
+
static int cyapa_gen5_initialize(struct cyapa *cyapa)
{
struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5;
@@ -618,6 +696,22 @@ static bool cyapa_gen5_sort_tsg_pip_app_resp_data(struct
cyapa *cyapa,
return false;
}
+static bool cyapa_gen5_sort_application_launch_data(struct cyapa *cyapa,
+ u8 *buf, int len)
+{
+ if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE)
+ return false;
+
+ /*
+* After reset or power on, trackpad device always sets to 0x00 0x00
+* to indicate a reset or power on event.
+*/
+ if (buf[0] == 0 && buf[1] == 0)
+ return true;
+
+ return false;
+}
+
static bool cyapa_gen5_sort_hid_descriptor_data(struct cyapa *cyapa,
u8 *buf, int len)
{
@@ -923,6 +1017,80 @@ static int cyapa_gen5_state_parse(struct cyapa
