Input: cyapa - add gen5 trackpad read baseline support
authorDudley Du <dudl@cypress.com>
Sun, 18 Jan 2015 06:16:01 +0000 (22:16 -0800)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>
Sun, 18 Jan 2015 08:10:32 +0000 (00:10 -0800)
Add read baseline function support for gen5 trackpad device, it can be used
through sysfs baseline 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>
drivers/input/mouse/cyapa.h
drivers/input/mouse/cyapa_gen5.c

index 51fcdb2..adc9ed5 100644 (file)
@@ -263,6 +263,8 @@ struct cyapa {
        u8 y_origin;  /* Y Axis Origin: 0 = top; 1 = bottom. */
        int electrodes_x;  /* Number of electrodes on the X Axis*/
        int electrodes_y;  /* Number of electrodes on the Y Axis*/
+       int electrodes_rx;  /* Number of Rx electrodes */
+       int aligned_electrodes_rx;  /* 4 aligned */
        int max_z;
 
        /*
index 442b29d..7c6e339 100644 (file)
@@ -363,6 +363,12 @@ struct gen5_app_get_parameter_data {
        u8 parameter_id;
 } __packed;
 
+struct gen5_retrieve_panel_scan_data {
+       __le16 read_offset;
+       __le16 read_elements;
+       u8 data_id;
+} __packed;
+
 /* Variables to record latest gen5 trackpad power states. */
 #define GEN5_DEV_SET_PWR_STATE(cyapa, s)       ((cyapa)->dev_pwr_mode = (s))
 #define GEN5_DEV_GET_PWR_STATE(cyapa)          ((cyapa)->dev_pwr_mode)
@@ -1661,6 +1667,638 @@ static int cyapa_gen5_set_power_mode(struct cyapa *cyapa,
        return 0;
 }
 
+static int cyapa_gen5_resume_scanning(struct cyapa *cyapa)
+{
+       u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x04 };
+       u8 resp_data[6];
+       int resp_len;
+       int error;
+
+       /* Try to dump all buffered data before doing command. */
+       cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+       resp_len = sizeof(resp_data);
+       error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+                       cmd, sizeof(cmd),
+                       resp_data, &resp_len,
+                       500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
+       if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x04))
+               return -EINVAL;
+
+       /* Try to dump all buffered 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[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x03 };
+       u8 resp_data[6];
+       int resp_len;
+       int error;
+
+       /* Try to dump all buffered data before doing command. */
+       cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+       resp_len = sizeof(resp_data);
+       error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+                       cmd, sizeof(cmd),
+                       resp_data, &resp_len,
+                       500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
+       if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x03))
+               return -EINVAL;
+
+       /* Try to dump all buffered data when suspending scanning. */
+       cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+       return 0;
+}
+
+static s32 twos_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 = twos_complement_to_s32(value, data_size * 8);
+
+       return value;
+}
+
+static void cyapa_gen5_guess_electrodes(struct cyapa *cyapa,
+               int *electrodes_rx, int *electrodes_tx)
+{
+       if (cyapa->electrodes_rx != 0) {
+               *electrodes_rx = cyapa->electrodes_rx;
+               *electrodes_tx = (cyapa->electrodes_x == *electrodes_rx) ?
+                               cyapa->electrodes_y : cyapa->electrodes_x;
+       } else {
+               *electrodes_tx = min(cyapa->electrodes_x, cyapa->electrodes_y);
+               *electrodes_rx = max(cyapa->electrodes_x, cyapa->electrodes_y);
+       }
+}
+
+/*
+ * 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)
+{
+       struct gen5_app_cmd_head *cmd_head;
+       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;
+       int electrodes_rx, electrodes_tx;
+       int i;
+       int error;
+
+       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 = electrodes_tx = 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;
+               tmp_max = INT_MIN;
+               tmp_min = INT_MAX;
+               tmp_ave = tmp_sum = tmp_count = 0;
+
+               if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) {
+                       if (cyapa->aligned_electrodes_rx == 0) {
+                               cyapa_gen5_guess_electrodes(cyapa,
+                                       &electrodes_rx, &electrodes_tx);
+                               cyapa->aligned_electrodes_rx =
+                                       (electrodes_rx + 3) & ~3u;
+                       }
+                       max_element_cnt =
+                               (cyapa->aligned_electrodes_rx + 7) & ~7u;
+               } 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->aligned_electrodes_rx * (*data_size);
+                       if (cyapa->electrodes_rx == cyapa->electrodes_x)
+                               electrodes_tx = cyapa->electrodes_y;
+                       else
+                               electrodes_tx = cyapa->electrodes_x;
+                       max_element_cnt = ((cyapa->aligned_electrodes_rx + 7) &
+                                               ~7u) * electrodes_tx;
+               } else if (idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) {
+                       offset = 2;
+                       max_element_cnt = cyapa->electrodes_x +
+                                               cyapa->electrodes_y;
+                       max_element_cnt = (max_element_cnt + 3) & ~3u;
+               }
+       }
+
+       memset(cmd, 0, sizeof(cmd));
+       cmd_head = (struct gen5_app_cmd_head *)cmd;
+       put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &cmd_head->addr);
+       put_unaligned_le16(sizeof(cmd) - 2, &cmd_head->length);
+       cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
+       cmd_head->cmd_code = cmd_code;
+       do {
+               read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) /
+                               (*data_size);
+               read_elements = min(read_elements, max_element_cnt - count);
+               read_len = read_elements * (*data_size);
+
+               put_unaligned_le16(offset, &cmd_head->parameter_data[0]);
+               put_unaligned_le16(read_len, &cmd_head->parameter_data[2]);
+               cmd_head->parameter_data[4] = idac_data_type;
+               resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len;
+               error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+                               cmd, sizeof(cmd),
+                               resp_data, &resp_len,
+                               500, cyapa_gen5_sort_tsg_pip_app_resp_data,
+                               true);
+               if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
+                               !VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
+                               !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
+                               resp_data[6] != idac_data_type)
+                       return (error < 0) ? error : -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[GEN5_RESP_DATA_STRUCTURE_OFFSET],
+                               *data_size);
+                       /* Tx's self global idac data. */
+                       *idac_min = cyapa_parse_structure_data(
+                               resp_data[9],
+                               &resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET +
+                                          *data_size],
+                               *data_size);
+                       break;
+               }
+
+               /* Read mutual global idac or local mutual/self PWC data. */
+               offset += read_len;
+               for (i = 10; i < (read_len + GEN5_RESP_DATA_STRUCTURE_OFFSET);
+                               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 < cyapa->aligned_electrodes_rx &&
+                               read_global_idac) {
+                               /*
+                                * The value gap betwen global and local mutual
+                                * idac data must bigger than 50%.
+                                * Normally, global value bigger than 50,
+                                * local values less than 10.
+                                */
+                               if (!tmp_ave || value > tmp_ave / 2) {
+                                       tmp_min = min(value, tmp_min);
+                                       tmp_max = max(value, tmp_max);
+                                       tmp_sum += value;
+                                       tmp_count++;
+
+                                       tmp_ave = tmp_sum / 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;
+
+               if (tmp_count == cyapa->aligned_electrodes_rx) {
+                       cyapa->electrodes_rx = cyapa->electrodes_rx ?
+                               cyapa->electrodes_rx : electrodes_rx;
+               } else if (tmp_count == electrodes_rx) {
+                       cyapa->electrodes_rx = cyapa->electrodes_rx ?
+                               cyapa->electrodes_rx : electrodes_rx;
+                       cyapa->aligned_electrodes_rx = electrodes_rx;
+               } else {
+                       cyapa->electrodes_rx = cyapa->electrodes_rx ?
+                               cyapa->electrodes_rx : electrodes_tx;
+                       cyapa->aligned_electrodes_rx = tmp_count;
+               }
+
+               *idac_min = tmp_min;
+               *idac_max = tmp_max;
+               *idac_ave = tmp_ave;
+       }
+
+       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 data_size;
+       int error;
+
+       *gidac_mutual_max = *gidac_mutual_min = *gidac_mutual_ave = 0;
+       *lidac_mutual_max = *lidac_mutual_min = *lidac_mutual_ave = 0;
+
+       data_size = 0;
+       error = 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 (error)
+               return error;
+
+       error = 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 error;
+}
+
+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 data_size;
+       int error;
+
+       *gidac_self_rx = *gidac_self_tx = 0;
+       *lidac_self_max = *lidac_self_min = *lidac_self_ave = 0;
+
+       data_size = 0;
+       error = 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 (error)
+               return error;
+       *gidac_self_rx = *lidac_self_max;
+       *gidac_self_tx = *lidac_self_min;
+
+       error = 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 error;
+}
+
+static ssize_t cyapa_gen5_execute_panel_scan(struct cyapa *cyapa)
+{
+       struct gen5_app_cmd_head *app_cmd_head;
+       u8 cmd[7];
+       u8 resp_data[6];
+       int resp_len;
+       int error;
+
+       memset(cmd, 0, sizeof(cmd));
+       app_cmd_head = (struct gen5_app_cmd_head *)cmd;
+       put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
+       put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
+       app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
+       app_cmd_head->cmd_code = GEN5_CMD_EXECUTE_PANEL_SCAN;
+       resp_len = sizeof(resp_data);
+       error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+                       cmd, sizeof(cmd),
+                       resp_data, &resp_len,
+                       500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
+       if (error || resp_len != sizeof(resp_data) ||
+                       !VALID_CMD_RESP_HEADER(resp_data,
+                               GEN5_CMD_EXECUTE_PANEL_SCAN) ||
+                       !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
+               return error ? error : -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)
+{
+       struct gen5_app_cmd_head *app_cmd_head;
+       struct gen5_retrieve_panel_scan_data *panel_sacn_data;
+       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;
+       int i;
+       int error;
+
+       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;
+       /* Assume max element size is 4 currently. */
+       read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) / 4;
+       read_len = read_elements * 4;
+       app_cmd_head = (struct gen5_app_cmd_head *)cmd;
+       put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr);
+       put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length);
+       app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID;
+       app_cmd_head->cmd_code = cmd_code;
+       panel_sacn_data = (struct gen5_retrieve_panel_scan_data *)
+                       app_cmd_head->parameter_data;
+       do {
+               put_unaligned_le16(offset, &panel_sacn_data->read_offset);
+               put_unaligned_le16(read_elements,
+                       &panel_sacn_data->read_elements);
+               panel_sacn_data->data_id = raw_data_type;
+
+               resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len;
+               error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+                       cmd, sizeof(cmd),
+                       resp_data, &resp_len,
+                       500, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
+               if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET ||
+                               !VALID_CMD_RESP_HEADER(resp_data, cmd_code) ||
+                               !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) ||
+                               resp_data[6] != raw_data_type)
+                       return error ? error : -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 = GEN5_RESP_DATA_STRUCTURE_OFFSET;
+                            i < (read_elements * data_size +
+                                       GEN5_RESP_DATA_STRUCTURE_OFFSET);
+                            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) -
+                               GEN5_RESP_DATA_STRUCTURE_OFFSET) / 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 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;
+       int error, resume_error;
+       int size;
+
+       if (cyapa->state != CYAPA_STATE_GEN5_APP)
+               return -EBUSY;
+
+       /* 1. Suspend Scanning*/
+       error = cyapa_gen5_suspend_scanning(cyapa);
+       if (error)
+               return error;
+
+       /* 2.  Read global and local mutual IDAC data. */
+       gidac_self_rx = gidac_self_tx = 0;
+       error = 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 (error)
+               goto resume_scanning;
+
+       /* 3.  Read global and local self IDAC data. */
+       error = cyapa_gen5_read_self_idac_data(cyapa,
+                               &gidac_self_rx, &gidac_self_tx,
+                               &lidac_self_max, &lidac_self_min,
+                               &lidac_self_ave);
+       if (error)
+               goto resume_scanning;
+
+       /* 4. Execuate panel scan. It must be executed before read data. */
+       error = cyapa_gen5_execute_panel_scan(cyapa);
+       if (error)
+               goto resume_scanning;
+
+       /* 5. Retrieve panel scan, mutual cap raw data. */
+       error = 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 (error)
+               goto resume_scanning;
+
+       /* 6. Retrieve panel scan, self cap raw data. */
+       error = 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 (error)
+               goto resume_scanning;
+
+       /* 7. Retrieve panel scan, mutual cap diffcount raw data. */
+       error = 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 (error)
+               goto resume_scanning;
+
+       /* 8. Retrieve panel scan, self cap diffcount raw data. */
+       error = 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 (error)
+               goto resume_scanning;
+
+       /* 9. Retrieve panel scan, mutual cap baseline raw data. */
+       error = 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 (error)
+               goto resume_scanning;
+
+       /* 10. Retrieve panel scan, self cap baseline raw data. */
+       error = 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 (error)
+               goto resume_scanning;
+
+resume_scanning:
+       /* 11. Resume Scanning*/
+       resume_error = cyapa_gen5_resume_scanning(cyapa);
+       if (resume_error || error)
+               return resume_error ? resume_error : error;
+
+       /* 12. Output data strings */
+       size = 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);
+       size += scnprintf(buf + size, PAGE_SIZE - size,
+               "%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 size;
+}
+
 static bool cyapa_gen5_sort_system_info_data(struct cyapa *cyapa,
                u8 *buf, int len)
 {
@@ -2057,6 +2695,8 @@ const struct cyapa_dev_ops cyapa_gen5_ops = {
        .bl_activate = cyapa_gen5_bl_activate,
        .bl_deactivate = cyapa_gen5_bl_deactivate,
 
+       .show_baseline = cyapa_gen5_show_baseline,
+
        .initialize = cyapa_gen5_initialize,
 
        .state_parse = cyapa_gen5_state_parse,