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Message-ID: <77BC725C9062764F874D79F51E1F1A8F40C1145A@S04-MBX01-01.s04.local>
Date: Mon, 14 Apr 2014 07:54:27 +0000
From: Dudley Du <dudl@...ress.com>
To: "Dmitry Torokhov (dmitry.torokhov@...il.com)"
<dmitry.torokhov@...il.com>
CC: Benson Leung <bleung@...gle.com>,
Daniel Kurtz <djkurtz@...gle.com>,
"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 6/6] input: cyapa: add sysfs interfaces supported for gen5
trackpad device
Add sysfs interfaces for gen5 trackpad devices that required in production,
including read and update firmware image, report baselines, sensors calibrate,
read product id, read firmware version.
TEST=test on Chomebooks.
Signed-off-by: Du, Dudley <dudl@...ress.com>
---
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index effa9c5..8653ffd 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.c b/drivers/input/mouse/cyapa.c
index 917eabe..4fb3677 100644
--- a/drivers/input/mouse/cyapa.c
+++ b/drivers/input/mouse/cyapa.c
@@ -29,6 +29,8 @@
#include <linux/uaccess.h>
#include <linux/unaligned/access_ok.h>
#include <linux/pm_runtime.h>
+#include <linux/crc-ccitt.h>
+#include <linux/crc-itu-t.h>
/* APA trackpad firmware generation */
@@ -2364,6 +2366,86 @@ static int cyapa_gen5_state_parse(struct cyapa *cyapa, u8 *reg_data, int len)
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)
@@ -2410,6 +2492,373 @@ 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_read_fw_bytes(struct cyapa *cyapa, u16 row_num, u8 *data)
+{
+ int ret;
+ u8 cmd[16];
+ size_t cmd_len;
+ u8 resp_data[CYAPA_TSG_FW_ROW_SIZE / 2 + GEN5_MIN_BL_RESP_LENGTH];
+ int resp_len;
+ u16 offset;
+ u16 cmd_crc;
+ struct cyapa_tsg_bin_image_data_record *fw_img_record;
+
+ fw_img_record = (struct cyapa_tsg_bin_image_data_record *)data;
+
+ cmd[0] = 0x04; /* register address */
+ cmd[1] = 0x00;
+ cmd[2] = 0x0e;
+ cmd[3] = 0x00;
+ cmd[4] = 0x40; /* report id 40h */
+ cmd[5] = 0x00;
+ cmd[6] = GEN5_SOP_KEY;
+ cmd[7] = 0x3d; /* read application image command code */
+ cmd[8] = 0x03;
+ cmd[9] = 0x00;
+ offset = row_num * CYAPA_TSG_FW_ROW_SIZE -
+ CYAPA_TSG_START_OF_APPLICATION;
+ put_unaligned_le16(offset, &cmd[10]);
+ cmd[12] = CYAPA_TSG_IMG_READ_SIZE;
+ cmd_crc = crc_itu_t(0xffff, &cmd[6], 7);
+ put_unaligned_le16(cmd_crc, &cmd[13]); /* CRC[15:0] */
+ cmd[15] = GEN5_EOP_KEY; /* EOP = 17h */
+ cmd_len = 16;
+
+ resp_len = CYAPA_TSG_IMG_READ_SIZE + GEN5_MIN_BL_RESP_LENGTH;
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, cmd_len,
+ resp_data, &resp_len,
+ 50, cyapa_gen5_sort_tsg_pip_bl_resp_data);
+ if (resp_len != (CYAPA_TSG_IMG_READ_SIZE + GEN5_MIN_BL_RESP_LENGTH) ||
+ ret || resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
+ !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
+ return (ret < 0) ? ret : -EAGAIN;
+
+ /* copy first 64 bytes in the row. */
+ memcpy(&fw_img_record->record_data[0], &resp_data[8],
+ CYAPA_TSG_IMG_READ_SIZE);
+
+ if (row_num == CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM) {
+ /* last row's rest 64 bytes are bootloader metadata,
+ * it's not allowed to be read out, will respond with error. */
+ memset(&fw_img_record->record_data[CYAPA_TSG_IMG_READ_SIZE],
+ 0, CYAPA_TSG_IMG_READ_SIZE);
+ goto skip_last_row;
+ }
+
+ /* read next 64 bytes in the row. */
+ offset = offset + CYAPA_TSG_IMG_READ_SIZE;
+ put_unaligned_le16(offset, &cmd[10]);
+ cmd_crc = crc_itu_t(0xffff, &cmd[6], 7);
+ put_unaligned_le16(cmd_crc, &cmd[13]); /* CRC[15:0] */
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, cmd_len,
+ resp_data, &resp_len,
+ 500, cyapa_gen5_sort_tsg_pip_bl_resp_data);
+ if (resp_len != (CYAPA_TSG_IMG_READ_SIZE + GEN5_MIN_BL_RESP_LENGTH) ||
+ ret || resp_data[2] != GEN5_BL_RESP_REPORT_ID ||
+ !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
+ return (ret < 0) ? ret : -EAGAIN;
+
+ /* copy last 64 bytes in the row. */
+ memcpy(&fw_img_record->record_data[CYAPA_TSG_IMG_READ_SIZE],
+ &resp_data[8], CYAPA_TSG_IMG_READ_SIZE);
+
+skip_last_row:
+ fw_img_record->flash_array_id = 0;
+ put_unaligned_be16(row_num, &fw_img_record->row_number);
+ put_unaligned_be16(CYAPA_TSG_FW_ROW_SIZE, &fw_img_record->record_len);
+
+ return 0;
+}
+
+static int cyapa_gen5_read_fw(struct cyapa *cyapa)
+{
+ int ret;
+ int fw_img_head_size;
+ int fw_img_record_size;
+ int row_index;
+ int array_index;
+ u32 img_start;
+ u16 img_len;
+ u16 img_start_row;
+ u16 img_end_row;
+ struct cyapa_tsg_bin_image_data_record app_integrity;
+ u8 *record_data;
+
+ if (cyapa->read_fw_image)
+ return 0;
+
+ ret = cyapa_gen5_bl_enter(cyapa);
+ if (ret)
+ goto err;
+
+ cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+ fw_img_head_size = sizeof(struct cyapa_tsg_bin_image_head);
+ fw_img_record_size = sizeof(struct cyapa_tsg_bin_image_data_record);
+
+ /* Read app integrity block data. */
+ row_index = CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM;
+ ret = cyapa_gen5_read_fw_bytes(cyapa, row_index, (u8 *)&app_integrity);
+ if (ret)
+ goto err;
+ img_start = get_unaligned_le32(&app_integrity.record_data[16]);
+ img_len = get_unaligned_le16(&app_integrity.record_data[20]);
+ if ((img_start + img_len) % CYAPA_TSG_FW_ROW_SIZE)
+ goto err;
+ img_start_row = img_start / CYAPA_TSG_FW_ROW_SIZE;
+ img_end_row = (img_start + img_len) / CYAPA_TSG_FW_ROW_SIZE - 1;
+
+ /* allocate memory for image. */
+ cyapa->read_fw_image_size = fw_img_head_size +
+ (img_end_row - img_start_row + 2) * fw_img_record_size;
+ cyapa->read_fw_image = kmalloc(cyapa->read_fw_image_size, GFP_KERNEL);
+ if (!cyapa->read_fw_image) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ /* set image head data. */
+ memcpy(cyapa->read_fw_image, &cyapa->fw_img_head, fw_img_head_size);
+
+ /* read image blocks. */
+ for (row_index = img_start_row, array_index = 0;
+ row_index <= img_end_row;
+ row_index++, array_index++) {
+ record_data = &cyapa->read_fw_image[fw_img_head_size +
+ array_index * fw_img_record_size];
+ ret = cyapa_gen5_read_fw_bytes(cyapa, row_index, record_data);
+ if (ret)
+ goto err;
+ }
+
+ /* append last app integrity block data. */
+ record_data = &cyapa->read_fw_image[fw_img_head_size +
+ array_index * fw_img_record_size];
+ memcpy(record_data, &app_integrity, fw_img_record_size);
+
+err:
+ if (ret) {
+ kfree(cyapa->read_fw_image);
+ cyapa->read_fw_image = NULL;
+ cyapa->read_fw_image_size = 0;
+ }
+
+ cyapa_detect_async(cyapa, 0);
+ return ret;
+}
+
+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_sleep_time_check(u16 sleep_time)
{
if (sleep_time > 1000)
@@ -2694,6 +3143,763 @@ static int cyapa_gen5_set_power_mode(struct cyapa *cyapa,
return ret;
}
+static int cyapa_gen5_resume_scanning(struct cyapa *cyapa)
+{
+ u8 cmd[7] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x04 };
+ u8 resp_data[6];
+ int resp_len;
+ int ret;
+
+ /* Try to dump all bufferred data before doing command. */
+ cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+ resp_len = 6;
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, 7,
+ resp_data, &resp_len,
+ 500, cyapa_gen5_sort_tsg_pip_app_resp_data);
+ if (ret || resp_data[2] != GEN5_APP_RESP_REPORT_ID ||
+ resp_data[3] != GEN5_RESP_RSVD_KEY ||
+ GET_GEN5_CMD_CODE(resp_data[4]) != 0x04)
+ return -EINVAL;
+
+ /* Try to dump all bufferred data when resuming scanning. */
+ cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+ return 0;
+}
+
+static int cyapa_gen5_suspend_scanning(struct cyapa *cyapa)
+{
+ u8 cmd[7] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x03 };
+ u8 resp_data[6];
+ int resp_len;
+ int ret;
+
+ /* Try to dump all bufferred data before doing command. */
+ cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+ resp_len = 6;
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, 7,
+ resp_data, &resp_len,
+ 500, cyapa_gen5_sort_tsg_pip_app_resp_data);
+ if (ret || resp_data[2] != GEN5_APP_RESP_REPORT_ID ||
+ resp_data[3] != GEN5_RESP_RSVD_KEY ||
+ GET_GEN5_CMD_CODE(resp_data[4]) != 0x03)
+ return -EINVAL;
+
+ /* Try to dump all bufferred data when suspending scanning. */
+ cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+ return 0;
+}
+
+static int cyapa_gen5_calibrate_pwcs(struct cyapa *cyapa,
+ u8 calibrate_sensing_mode_type)
+{
+ int ret;
+ u8 cmd[8];
+ u8 resp_data[6];
+ int resp_len;
+
+ /* Try to dump all bufferred data before doing command. */
+ cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+ cmd[0] = 0x04;
+ cmd[1] = 0x00;
+ cmd[2] = 0x06;
+ cmd[3] = 0x00;
+ cmd[4] = GEN5_APP_CMD_REPORT_ID;
+ cmd[5] = 0x00;
+ cmd[6] = GEN5_CMD_CALIBRATE;
+ cmd[7] = calibrate_sensing_mode_type;
+ resp_len = sizeof(resp_data);
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, sizeof(cmd),
+ resp_data, &resp_len,
+ 5000, cyapa_gen5_sort_tsg_pip_app_resp_data);
+ if (ret || resp_data[2] != GEN5_APP_RESP_REPORT_ID ||
+ GET_GEN5_CMD_CODE(resp_data[4]) != GEN5_CMD_CALIBRATE ||
+ !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
+ return ret < 0 ? ret : -EAGAIN;
+
+ return 0;
+}
+
+static ssize_t cyapa_gen5_do_calibrate(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct cyapa *cyapa = dev_get_drvdata(dev);
+ int ret, calibrate_ret;
+
+ /* 1. suspend Scanning*/
+ ret = cyapa_gen5_suspend_scanning(cyapa);
+ if (ret)
+ return ret;
+
+ /* 2. do mutual capacitance fine calibrate. */
+ calibrate_ret = cyapa_gen5_calibrate_pwcs(cyapa,
+ CYAPA_SENSING_MODE_MUTUAL_CAP_FINE);
+ if (calibrate_ret)
+ goto resume_scanning;
+
+ /* 3. do self capacitance calibrate. */
+ calibrate_ret = cyapa_gen5_calibrate_pwcs(cyapa,
+ CYAPA_SENSING_MODE_SELF_CAP);
+ if (calibrate_ret)
+ goto resume_scanning;
+
+resume_scanning:
+ /* 4. resume Scanning*/
+ ret = cyapa_gen5_resume_scanning(cyapa);
+ if (ret || calibrate_ret)
+ return ret ? ret : calibrate_ret;
+
+ return count;
+}
+
+static s32 two_complement_to_s32(s32 value, int num_bits)
+{
+ if (value >> (num_bits - 1))
+ value |= -1 << num_bits;
+ return value;
+}
+
+static s32 cyapa_parse_structure_data(u8 data_format, u8 *buf, int buf_len)
+{
+ int data_size;
+ bool big_endian;
+ bool unsigned_type;
+ s32 value;
+
+ data_size = (data_format & 0x07);
+ big_endian = ((data_format & 0x10) == 0x00);
+ unsigned_type = ((data_format & 0x20) == 0x00);
+
+ if (buf_len < data_size)
+ return 0;
+
+ switch (data_size) {
+ case 1:
+ value = buf[0];
+ break;
+ case 2:
+ if (big_endian)
+ value = get_unaligned_be16(buf);
+ else
+ value = get_unaligned_le16(buf);
+ break;
+ case 4:
+ if (big_endian)
+ value = get_unaligned_be32(buf);
+ else
+ value = get_unaligned_le32(buf);
+ break;
+ default:
+ /* should not happen, just as default case here. */
+ value = 0;
+ break;
+ }
+
+ if (!unsigned_type)
+ value = two_complement_to_s32(value, data_size * 8);
+
+ return value;
+}
+
+
+/*
+ * Read all the global mutual or self idac data or mutual or self local PWC
+ * data based on the @idac_data_type.
+ * If the input value of @data_size is 0, then means read global mutual or
+ * self idac data. For read global mutual idac data, @idac_max, @idac_min and
+ * @idac_ave are in order used to return the max value of global mutual idac
+ * data, the min value of global mutual idac and the average value of the
+ * global mutual idac data. For read global self idac data, @idac_max is used
+ * to return the global self cap idac data in Rx direction, @idac_min is used
+ * to return the global self cap idac data in Tx direction. @idac_ave is not
+ * used.
+ * If the input value of @data_size is not 0, than means read the mutual or
+ * self local PWC data. The @idac_max, @idac_min and @idac_ave are used to
+ * return the max, min and average value of the mutual or self local PWC data.
+ * Note, in order to raed mutual local PWC data, must read invoke this function
+ * to read the mutual global idac data firstly to set the correct Rx number
+ * value, otherwise, the read mutual idac and PWC data may not correct.
+ */
+static int cyapa_gen5_read_idac_data(struct cyapa *cyapa,
+ u8 cmd_code, u8 idac_data_type, int *data_size,
+ int *idac_max, int *idac_min, int *idac_ave)
+{
+ int ret;
+ int i;
+ u8 cmd[12];
+ u8 resp_data[256];
+ int resp_len;
+ int read_len;
+ int value;
+ u16 offset;
+ int read_elements;
+ bool read_global_idac;
+ int sum, count, max_element_cnt;
+ int tmp_max, tmp_min, tmp_ave, tmp_sum, tmp_count, tmp_max_elements;
+ int electrodes_rx;
+
+ if (cmd_code != GEN5_CMD_RETRIEVE_DATA_STRUCTURE ||
+ (idac_data_type != GEN5_RETRIEVE_MUTUAL_PWC_DATA &&
+ idac_data_type != GEN5_RETRIEVE_SELF_CAP_PWC_DATA) ||
+ !data_size || !idac_max || !idac_min || !idac_ave)
+ return -EINVAL;
+
+ *idac_max = INT_MIN;
+ *idac_min = INT_MAX;
+ sum = count = tmp_count = 0;
+ electrodes_rx = 0;
+ tmp_max_elements = 0;
+ if (*data_size == 0) {
+ /* Read global idac values firstly.
+ * Currently, no idac data exceed 4 bytes. */
+ read_global_idac = true;
+ offset = 0;
+ *data_size = 4;
+
+ if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
+ if (cyapa->electrodes_rx == 0) {
+ if (cyapa->electrodes_y > cyapa->electrodes_x) {
+ electrodes_rx = cyapa->electrodes_y;
+ tmp_max_elements = cyapa->electrodes_x;
+ } else {
+ electrodes_rx = cyapa->electrodes_x;
+ tmp_max_elements = cyapa->electrodes_y;
+ }
+ } else {
+ electrodes_rx = cyapa->electrodes_rx;
+ tmp_max_elements = 0; /* disable Rx detect. */
+ }
+ max_element_cnt = ((electrodes_rx + 7) / 8) * 8;
+ tmp_max = INT_MIN;
+ tmp_min = INT_MAX;
+ tmp_ave = tmp_sum = tmp_count = 0;
+ } else
+ max_element_cnt = 2;
+ } else {
+ read_global_idac = false;
+ if (*data_size > 4)
+ *data_size = 4;
+ /* calculate the start offset in bytes of local PWC data. */
+ if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
+ offset = ((cyapa->electrodes_rx + 7) / 8) * 8
+ * (*data_size);
+ if (cyapa->electrodes_rx == cyapa->electrodes_x)
+ tmp_count = cyapa->electrodes_y;
+ else
+ tmp_count = cyapa->electrodes_x;
+ max_element_cnt = ((cyapa->electrodes_rx + 7) / 8) *
+ 8 * tmp_count;
+ } else if (idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
+ offset = 2;
+ max_element_cnt = cyapa->electrodes_x +
+ cyapa->electrodes_y;
+ }
+ }
+
+ do {
+ read_elements = (256 - 10) / (*data_size);
+ read_elements = min(read_elements, max_element_cnt - count);
+ read_len = read_elements * (*data_size);
+
+ cmd[0] = 0x04;
+ cmd[1] = 0x00;
+ cmd[2] = 0x0a;
+ cmd[3] = 0x00;
+ cmd[4] = GEN5_APP_CMD_REPORT_ID;
+ cmd[5] = 0x00;
+ cmd[6] = cmd_code;
+ put_unaligned_le16(offset, &cmd[7]); /* Read Offset[15:0] */
+ put_unaligned_le16(read_len, &cmd[9]); /* Read Length[15:0] */
+ cmd[11] = idac_data_type;
+ resp_len = 10 + read_len;
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, 12,
+ resp_data, &resp_len,
+ 500, cyapa_gen5_sort_tsg_pip_app_resp_data);
+ if (ret || resp_len < 10 || resp_data[2] !=
+ GEN5_APP_RESP_REPORT_ID ||
+ GET_GEN5_CMD_CODE(resp_data[4]) != cmd_code ||
+ !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
+ resp_data[6] != idac_data_type)
+ return (ret < 0) ? ret : -EAGAIN;
+ read_len = get_unaligned_le16(&resp_data[7]);
+ if (read_len == 0)
+ break;
+
+ *data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK);
+ if (read_len < *data_size)
+ return -EINVAL;
+
+ if (read_global_idac &&
+ idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
+ /* Rx's self global idac data. */
+ *idac_max = cyapa_parse_structure_data(
+ resp_data[9], &resp_data[10],
+ *data_size);
+ /* Tx's self global idac data. */
+ *idac_min = cyapa_parse_structure_data(
+ resp_data[9],
+ &resp_data[10 + *data_size],
+ *data_size);
+ break;
+ }
+
+ /* read mutual global idac or local mutual/self PWC data. */
+ offset += read_len;
+ for (i = 10; i < (read_len + 10); i += *data_size) {
+ value = cyapa_parse_structure_data(resp_data[9],
+ &resp_data[i], *data_size);
+ *idac_min = min(value, *idac_min);
+ *idac_max = max(value, *idac_max);
+
+ if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA &&
+ tmp_count < tmp_max_elements &&
+ read_global_idac) {
+ tmp_min = min(value, tmp_min);
+ tmp_max = max(value, tmp_max);
+ tmp_sum += value;
+ tmp_count++;
+ }
+
+ sum += value;
+ count++;
+
+ if (count >= max_element_cnt)
+ goto out;
+ }
+ } while (true);
+
+out:
+ *idac_ave = count ? (sum / count) : 0;
+
+ if (read_global_idac &&
+ idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
+ if (tmp_count == 0)
+ return 0;
+ /* algorithm to detect electrodes_rx value. */
+ tmp_ave = tmp_sum / tmp_count;
+ tmp_count = tmp_ave * 15 / 100;
+ if (abs(tmp_ave - *idac_ave) > tmp_count ||
+ (abs(tmp_ave - *idac_min) > (tmp_count * 2) &&
+ *idac_min < tmp_min) ||
+ (abs(*idac_max - tmp_ave) > (tmp_count * 2) &&
+ *idac_max > tmp_max)) {
+ /* overcount the mutual global idac values. */
+ cyapa->electrodes_rx = tmp_max_elements;
+ *idac_min = tmp_min;
+ *idac_max = tmp_max;
+ *idac_ave = tmp_ave;
+ } else
+ cyapa->electrodes_rx = electrodes_rx;
+ }
+
+ return 0;
+}
+
+static int cyapa_gen5_read_mutual_idac_data(struct cyapa *cyapa,
+ int *gidac_mutual_max, int *gidac_mutual_min, int *gidac_mutual_ave,
+ int *lidac_mutual_max, int *lidac_mutual_min, int *lidac_mutual_ave)
+{
+ int ret;
+ int data_size;
+
+ *gidac_mutual_max = *gidac_mutual_min = *gidac_mutual_ave = 0;
+ *lidac_mutual_max = *lidac_mutual_min = *lidac_mutual_ave = 0;
+
+ data_size = 0;
+ ret = cyapa_gen5_read_idac_data(cyapa,
+ GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
+ GEN5_RETRIEVE_MUTUAL_PWC_DATA,
+ &data_size,
+ gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave);
+ if (ret)
+ return ret;
+
+ ret = cyapa_gen5_read_idac_data(cyapa,
+ GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
+ GEN5_RETRIEVE_MUTUAL_PWC_DATA,
+ &data_size,
+ lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave);
+ return ret;
+}
+
+static int cyapa_gen5_read_self_idac_data(struct cyapa *cyapa,
+ int *gidac_self_rx, int *gidac_self_tx,
+ int *lidac_self_max, int *lidac_self_min, int *lidac_self_ave)
+{
+ int ret;
+ int data_size;
+
+ *gidac_self_rx = *gidac_self_tx = 0;
+ *lidac_self_max = *lidac_self_min = *lidac_self_ave = 0;
+
+ data_size = 0;
+ ret = cyapa_gen5_read_idac_data(cyapa,
+ GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
+ GEN5_RETRIEVE_SELF_CAP_PWC_DATA,
+ &data_size,
+ lidac_self_max, lidac_self_min, lidac_self_ave);
+ if (ret)
+ return ret;
+ *gidac_self_rx = *lidac_self_max;
+ *gidac_self_tx = *lidac_self_min;
+
+ ret = cyapa_gen5_read_idac_data(cyapa,
+ GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
+ GEN5_RETRIEVE_SELF_CAP_PWC_DATA,
+ &data_size,
+ lidac_self_max, lidac_self_min, lidac_self_ave);
+ return ret;
+}
+
+static ssize_t cyapa_gen5_execute_panel_scan(struct cyapa *cyapa)
+{
+ int ret;
+ u8 cmd[7];
+ u8 resp_data[6];
+ int resp_len;
+
+ cmd[0] = 0x04;
+ cmd[1] = 0x00;
+ cmd[2] = 0x05;
+ cmd[3] = 0x00;
+ cmd[4] = GEN5_APP_CMD_REPORT_ID;
+ cmd[5] = 0x00;
+ cmd[6] = GEN5_CMD_EXECUTE_PANEL_SCAN; /* command code */
+ resp_len = 6;
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, 7,
+ resp_data, &resp_len,
+ 500, cyapa_gen5_sort_tsg_pip_app_resp_data);
+ if (ret || resp_len != 6 ||
+ resp_data[2] != GEN5_APP_RESP_REPORT_ID ||
+ GET_GEN5_CMD_CODE(resp_data[4]) !=
+ GEN5_CMD_EXECUTE_PANEL_SCAN ||
+ !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) {
+ cyapa_gen5_resume_scanning(cyapa);
+ return (ret < 0) ? ret : -EAGAIN;
+ }
+
+ return 0;
+}
+
+static int cyapa_gen5_read_panel_scan_raw_data(struct cyapa *cyapa,
+ u8 cmd_code, u8 raw_data_type, int raw_data_max_num,
+ int *raw_data_max, int *raw_data_min, int *raw_data_ave,
+ u8 *buffer)
+{
+ int ret;
+ int i;
+ u8 cmd[12];
+ u8 resp_data[256]; /* max bytes can transfer one time. */
+ int resp_len;
+ int read_elements;
+ int read_len;
+ u16 offset;
+ s32 value;
+ int sum, count;
+ int data_size;
+ s32 *intp;
+
+ if (cmd_code != GEN5_CMD_RETRIEVE_PANEL_SCAN ||
+ (raw_data_type > GEN5_PANEL_SCAN_SELF_DIFFCOUNT) ||
+ !raw_data_max || !raw_data_min || !raw_data_ave)
+ return -EINVAL;
+
+ intp = (s32 *)buffer;
+ *raw_data_max = INT_MIN;
+ *raw_data_min = INT_MAX;
+ sum = count = 0;
+ offset = 0;
+ read_elements = (256 - 10) / 4; /* currently, max element size is 4. */
+ read_len = read_elements * 4;
+ do {
+ cmd[0] = 0x04;
+ cmd[1] = 0x00;
+ cmd[2] = 0x0a;
+ cmd[3] = 0x00;
+ cmd[4] = GEN5_APP_CMD_REPORT_ID;
+ cmd[5] = 0x00;
+ cmd[6] = cmd_code; /* command code */
+ put_unaligned_le16(offset, &cmd[7]);
+ put_unaligned_le16(read_elements, &cmd[9]);
+ cmd[11] = raw_data_type;
+ resp_len = 10 + read_len;
+
+ ret = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+ cmd, 12,
+ resp_data, &resp_len,
+ 500, cyapa_gen5_sort_tsg_pip_app_resp_data);
+ if (ret || resp_len < 10 ||
+ resp_data[2] != GEN5_APP_RESP_REPORT_ID ||
+ (resp_data[4] & 0x7f) != cmd_code ||
+ !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
+ resp_data[6] != raw_data_type)
+ return (ret < 0) ? ret : -EAGAIN;
+
+ read_elements = get_unaligned_le16(&resp_data[7]);
+ if (read_elements == 0)
+ break;
+
+ data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK);
+ offset += read_elements;
+ if (read_elements) {
+ for (i = 10;
+ i < (read_elements * data_size + 10);
+ i += data_size) {
+ value = cyapa_parse_structure_data(resp_data[9],
+ &resp_data[i], data_size);
+ *raw_data_min = min(value, *raw_data_min);
+ *raw_data_max = max(value, *raw_data_max);
+
+ if (intp)
+ put_unaligned_le32(value, &intp[count]);
+
+ sum += value;
+ count++;
+
+ }
+ }
+
+ if (count >= raw_data_max_num)
+ break;
+
+ read_elements = (sizeof(resp_data) - 10) / data_size;
+ read_len = read_elements * data_size;
+ } while (true);
+
+ *raw_data_ave = count ? (sum / count) : 0;
+
+ return 0;
+}
+
+static ssize_t cyapa_gen5_show_baseline(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct cyapa *cyapa = dev_get_drvdata(dev);
+ int ret, err;
+ int gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave;
+ int lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave;
+ int gidac_self_rx, gidac_self_tx;
+ int lidac_self_max, lidac_self_min, lidac_self_ave;
+ int raw_cap_mutual_max, raw_cap_mutual_min, raw_cap_mutual_ave;
+ int raw_cap_self_max, raw_cap_self_min, raw_cap_self_ave;
+ int mutual_diffdata_max, mutual_diffdata_min, mutual_diffdata_ave;
+ int self_diffdata_max, self_diffdata_min, self_diffdata_ave;
+ int mutual_baseline_max, mutual_baseline_min, mutual_baseline_ave;
+ int self_baseline_max, self_baseline_min, self_baseline_ave;
+
+ /* 1. suspend Scanning*/
+ ret = cyapa_gen5_suspend_scanning(cyapa);
+ if (ret)
+ return ret;
+
+ /* 2. read global and local mutual IDAC data. */
+ gidac_self_rx = gidac_self_tx = 0;
+ err = cyapa_gen5_read_mutual_idac_data(cyapa,
+ &gidac_mutual_max, &gidac_mutual_min,
+ &gidac_mutual_ave, &lidac_mutual_max,
+ &lidac_mutual_min, &lidac_mutual_ave);
+ if (err)
+ goto resume_scanning;
+
+ /* 3. read global and local self IDAC data. */
+ err = cyapa_gen5_read_self_idac_data(cyapa,
+ &gidac_self_rx, &gidac_self_tx,
+ &lidac_self_max, &lidac_self_min,
+ &lidac_self_ave);
+ if (err)
+ goto resume_scanning;
+
+ /* 4. execuate panel scan. It must be executed before read data. */
+ err = cyapa_gen5_execute_panel_scan(cyapa);
+ if (err)
+ goto resume_scanning;
+
+ /* 5. retrive panel scan, mutual cap raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_MUTUAL_RAW_DATA,
+ cyapa->electrodes_x * cyapa->electrodes_y,
+ &raw_cap_mutual_max, &raw_cap_mutual_min,
+ &raw_cap_mutual_ave,
+ NULL);
+ if (err)
+ goto resume_scanning;
+
+ /* 6. retrive panel scan, self cap raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_SELF_RAW_DATA,
+ cyapa->electrodes_x + cyapa->electrodes_y,
+ &raw_cap_self_max, &raw_cap_self_min,
+ &raw_cap_self_ave,
+ NULL);
+ if (err)
+ goto resume_scanning;
+
+ /* 7. retrive panel scan, mutual cap diffcount raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT,
+ cyapa->electrodes_x * cyapa->electrodes_y,
+ &mutual_diffdata_max, &mutual_diffdata_min,
+ &mutual_diffdata_ave,
+ NULL);
+ if (err)
+ goto resume_scanning;
+
+ /* 8. retrive panel scan, self cap diffcount raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_SELF_DIFFCOUNT,
+ cyapa->electrodes_x + cyapa->electrodes_y,
+ &self_diffdata_max, &self_diffdata_min,
+ &self_diffdata_ave,
+ NULL);
+ if (err)
+ goto resume_scanning;
+
+ /* 9. retrive panel scan, mutual cap baseline raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_MUTUAL_BASELINE,
+ cyapa->electrodes_x * cyapa->electrodes_y,
+ &mutual_baseline_max, &mutual_baseline_min,
+ &mutual_baseline_ave,
+ NULL);
+ if (err)
+ goto resume_scanning;
+
+ /* 10. retrive panel scan, self cap baseline raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_SELF_BASELINE,
+ cyapa->electrodes_x + cyapa->electrodes_y,
+ &self_baseline_max, &self_baseline_min,
+ &self_baseline_ave,
+ NULL);
+ if (err)
+ goto resume_scanning;
+
+resume_scanning:
+ /* 11. resume Scanning*/
+ ret = cyapa_gen5_resume_scanning(cyapa);
+ if (ret || err)
+ return ret ? ret : err;
+
+ /* 12. output data strings */
+ ret = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d %d %d %d %d %d ",
+ gidac_mutual_min, gidac_mutual_max, gidac_mutual_ave,
+ lidac_mutual_min, lidac_mutual_max, lidac_mutual_ave,
+ gidac_self_rx, gidac_self_tx,
+ lidac_self_min, lidac_self_max, lidac_self_ave);
+ err = scnprintf(buf + ret, PAGE_SIZE - ret,
+ "%d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d\n",
+ raw_cap_mutual_min, raw_cap_mutual_max, raw_cap_mutual_ave,
+ raw_cap_self_min, raw_cap_self_max, raw_cap_self_ave,
+ mutual_diffdata_min, mutual_diffdata_max, mutual_diffdata_ave,
+ self_diffdata_min, self_diffdata_max, self_diffdata_ave,
+ mutual_baseline_min, mutual_baseline_max, mutual_baseline_ave,
+ self_baseline_min, self_baseline_max, self_baseline_ave);
+ return ret + err;
+}
+
+static int cyapa_gen5_read_raw_data(struct cyapa *cyapa)
+{
+ int ret, err;
+ int raw_cap_mutual_max, raw_cap_mutual_min, raw_cap_mutual_ave;
+ int raw_cap_self_max, raw_cap_self_min, raw_cap_self_ave;
+ int offset;
+ int data_size, max, min, ave;
+ ktime_t time_mono;
+
+ offset = 0;
+ if (!cyapa->tp_raw_data)
+ return -ENOMEM;
+
+ /* 1. suspend Scanning.
+ * After suspend scanning, the raw data will not be updated,
+ * so the time of the raw data is before scanning suspended. */
+ time_mono = ktime_get();
+ ret = cyapa_gen5_suspend_scanning(cyapa);
+ if (ret)
+ return ret;
+
+ /* 2. get the correct electrodes_rx number. */
+ if (cyapa->electrodes_rx == 0) {
+ /* Through the read global idac interface to get the Rx number.
+ * this value is useful to the raw data map.*/
+ data_size = 0;
+ err = cyapa_gen5_read_idac_data(cyapa,
+ GEN5_CMD_RETRIEVE_DATA_STRUCTURE,
+ GEN5_RETRIEVE_MUTUAL_PWC_DATA,
+ &data_size, &max, &min, &ave);
+ if (err || cyapa->electrodes_rx == 0)
+ goto resume_scanning;
+ }
+
+ /* 3. execuate panel scan. It must be executed before read data. */
+ err = cyapa_gen5_execute_panel_scan(cyapa);
+ if (err)
+ goto resume_scanning;
+
+ /* 4. retrive panel scan, mutual cap raw data. */
+ offset = GEN5_RAW_DATA_HEAD_SIZE;
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT,
+ cyapa->electrodes_x * cyapa->electrodes_y,
+ &raw_cap_mutual_max, &raw_cap_mutual_min,
+ &raw_cap_mutual_ave,
+ cyapa->tp_raw_data + offset);
+ if (err)
+ goto resume_scanning;
+
+ offset += sizeof(s32) * cyapa->electrodes_x * cyapa->electrodes_y;
+
+ /* 5. retrive panel scan, self cap raw data. */
+ err = cyapa_gen5_read_panel_scan_raw_data(cyapa,
+ GEN5_CMD_RETRIEVE_PANEL_SCAN,
+ GEN5_PANEL_SCAN_SELF_DIFFCOUNT,
+ cyapa->electrodes_x + cyapa->electrodes_y,
+ &raw_cap_self_max, &raw_cap_self_min,
+ &raw_cap_self_ave,
+ cyapa->tp_raw_data + offset);
+ if (err)
+ goto resume_scanning;
+
+ offset += sizeof(s32) * (cyapa->electrodes_x + cyapa->electrodes_y);
+
+resume_scanning:
+ /* 6. resume Scanning*/
+ ret = cyapa_gen5_resume_scanning(cyapa);
+ if (ret || err)
+ return ret ? ret : err;
+
+ *((struct timeval *)&cyapa->tp_raw_data[0]) =
+ ktime_to_timeval(time_mono);
+ cyapa->tp_raw_data[16] = (u8)cyapa->electrodes_x;
+ cyapa->tp_raw_data[17] = (u8)cyapa->electrodes_y;
+ cyapa->tp_raw_data[18] = (u8)cyapa->x_origin;
+ cyapa->tp_raw_data[19] = (u8)cyapa->y_origin;
+ cyapa->tp_raw_data[20] = (u8)sizeof(s32);
+ cyapa->tp_raw_data[21] = (u8)sizeof(s32);
+ cyapa->tp_raw_data[22] = (u8)cyapa->electrodes_rx;
+ cyapa->tp_raw_data[23] = 0; /* reserved. */
+
+ cyapa->tp_raw_data_size = offset;
+ return 0;
+}
+
static bool cyapa_gen5_sort_system_info_data(struct cyapa *cyapa,
u8 *buf, int len)
{
@@ -3050,19 +4256,19 @@ static int cyapa_check_is_operational(struct cyapa *cyapa)
switch (cyapa->gen) {
case CYAPA_GEN5:
- cyapa->cyapa_check_fw = NULL;
- cyapa->cyapa_bl_enter = NULL;
+ cyapa->cyapa_check_fw = cyapa_gen5_check_fw;
+ cyapa->cyapa_bl_enter = cyapa_gen5_bl_enter;
cyapa->cyapa_bl_activate = NULL;
- cyapa->cyapa_bl_initiate = NULL;
- cyapa->cyapa_update_fw = NULL;
+ cyapa->cyapa_bl_initiate = cyapa_gen5_bl_initiate;
+ cyapa->cyapa_update_fw = cyapa_gen5_do_fw_update;
cyapa->cyapa_bl_verify_app_integrity = NULL;
cyapa->cyapa_bl_deactivate = NULL;
- cyapa->cyapa_show_baseline = NULL;
- cyapa->cyapa_calibrate_store = NULL;
+ cyapa->cyapa_show_baseline = cyapa_gen5_show_baseline;
+ cyapa->cyapa_calibrate_store = cyapa_gen5_do_calibrate;
cyapa->cyapa_irq_handler = cyapa_gen5_irq_handler;
cyapa->cyapa_set_power_mode = cyapa_gen5_set_power_mode;
- cyapa->cyapa_read_fw = NULL;
- cyapa->cyapa_read_raw_data = NULL;
+ cyapa->cyapa_read_fw = cyapa_gen5_read_fw;
+ cyapa->cyapa_read_raw_data = cyapa_gen5_read_raw_data;
cyapa_enable_irq_save(cyapa);
ret = cyapa_gen5_do_operational_check(cyapa);
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