diff options
Diffstat (limited to 'drivers/input/touchscreen/atmel_mxt_ts.c')
| -rw-r--r-- | drivers/input/touchscreen/atmel_mxt_ts.c | 862 |
1 files changed, 570 insertions, 292 deletions
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index a70400754e92..6e0b4a2120d3 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -2,6 +2,8 @@ * Atmel maXTouch Touchscreen driver * * Copyright (C) 2010 Samsung Electronics Co.Ltd + * Copyright (C) 2012 Google, Inc. + * * Author: Joonyoung Shim <jy0922.shim@samsung.com> * * This program is free software; you can redistribute it and/or modify it @@ -12,6 +14,8 @@ */ #include <linux/module.h> +#include <linux/init.h> +#include <linux/completion.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/i2c.h> @@ -25,12 +29,6 @@ #define MXT_VER_21 21 #define MXT_VER_22 22 -/* Slave addresses */ -#define MXT_APP_LOW 0x4a -#define MXT_APP_HIGH 0x4b -#define MXT_BOOT_LOW 0x24 -#define MXT_BOOT_HIGH 0x25 - /* Firmware */ #define MXT_FW_NAME "maxtouch.fw" @@ -83,6 +81,9 @@ #define MXT_COMMAND_REPORTALL 3 #define MXT_COMMAND_DIAGNOSTIC 5 +/* Define for T6 status byte */ +#define MXT_T6_STATUS_RESET (1 << 7) + /* MXT_GEN_POWER_T7 field */ #define MXT_POWER_IDLEACQINT 0 #define MXT_POWER_ACTVACQINT 1 @@ -99,33 +100,26 @@ /* MXT_TOUCH_MULTI_T9 field */ #define MXT_TOUCH_CTRL 0 -#define MXT_TOUCH_XORIGIN 1 -#define MXT_TOUCH_YORIGIN 2 -#define MXT_TOUCH_XSIZE 3 -#define MXT_TOUCH_YSIZE 4 -#define MXT_TOUCH_BLEN 6 -#define MXT_TOUCH_TCHTHR 7 -#define MXT_TOUCH_TCHDI 8 -#define MXT_TOUCH_ORIENT 9 -#define MXT_TOUCH_MOVHYSTI 11 -#define MXT_TOUCH_MOVHYSTN 12 -#define MXT_TOUCH_NUMTOUCH 14 -#define MXT_TOUCH_MRGHYST 15 -#define MXT_TOUCH_MRGTHR 16 -#define MXT_TOUCH_AMPHYST 17 -#define MXT_TOUCH_XRANGE_LSB 18 -#define MXT_TOUCH_XRANGE_MSB 19 -#define MXT_TOUCH_YRANGE_LSB 20 -#define MXT_TOUCH_YRANGE_MSB 21 -#define MXT_TOUCH_XLOCLIP 22 -#define MXT_TOUCH_XHICLIP 23 -#define MXT_TOUCH_YLOCLIP 24 -#define MXT_TOUCH_YHICLIP 25 -#define MXT_TOUCH_XEDGECTRL 26 -#define MXT_TOUCH_XEDGEDIST 27 -#define MXT_TOUCH_YEDGECTRL 28 -#define MXT_TOUCH_YEDGEDIST 29 -#define MXT_TOUCH_JUMPLIMIT 30 +#define MXT_T9_ORIENT 9 +#define MXT_T9_RANGE 18 + +/* MXT_TOUCH_MULTI_T9 status */ +#define MXT_T9_UNGRIP (1 << 0) +#define MXT_T9_SUPPRESS (1 << 1) +#define MXT_T9_AMP (1 << 2) +#define MXT_T9_VECTOR (1 << 3) +#define MXT_T9_MOVE (1 << 4) +#define MXT_T9_RELEASE (1 << 5) +#define MXT_T9_PRESS (1 << 6) +#define MXT_T9_DETECT (1 << 7) + +struct t9_range { + u16 x; + u16 y; +} __packed; + +/* MXT_TOUCH_MULTI_T9 orient */ +#define MXT_T9_ORIENT_SWITCH (1 << 0) /* MXT_PROCI_GRIPFACE_T20 field */ #define MXT_GRIPFACE_CTRL 0 @@ -174,17 +168,16 @@ /* Define for MXT_GEN_COMMAND_T6 */ #define MXT_BOOT_VALUE 0xa5 +#define MXT_RESET_VALUE 0x01 #define MXT_BACKUP_VALUE 0x55 + +/* Delay times */ #define MXT_BACKUP_TIME 50 /* msec */ #define MXT_RESET_TIME 200 /* msec */ - -#define MXT_FWRESET_TIME 175 /* msec */ - -/* MXT_SPT_GPIOPWM_T19 field */ -#define MXT_GPIO0_MASK 0x04 -#define MXT_GPIO1_MASK 0x08 -#define MXT_GPIO2_MASK 0x10 -#define MXT_GPIO3_MASK 0x20 +#define MXT_RESET_TIMEOUT 3000 /* msec */ +#define MXT_CRC_TIMEOUT 1000 /* msec */ +#define MXT_FW_RESET_TIME 3000 /* msec */ +#define MXT_FW_CHG_TIMEOUT 300 /* msec */ /* Command to unlock bootloader */ #define MXT_UNLOCK_CMD_MSB 0xaa @@ -198,21 +191,8 @@ #define MXT_FRAME_CRC_PASS 0x04 #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ #define MXT_BOOT_STATUS_MASK 0x3f - -/* Touch status */ -#define MXT_UNGRIP (1 << 0) -#define MXT_SUPPRESS (1 << 1) -#define MXT_AMP (1 << 2) -#define MXT_VECTOR (1 << 3) -#define MXT_MOVE (1 << 4) -#define MXT_RELEASE (1 << 5) -#define MXT_PRESS (1 << 6) -#define MXT_DETECT (1 << 7) - -/* Touch orient bits */ -#define MXT_XY_SWITCH (1 << 0) -#define MXT_X_INVERT (1 << 1) -#define MXT_Y_INVERT (1 << 2) +#define MXT_BOOT_EXTENDED_ID (1 << 5) +#define MXT_BOOT_ID_MASK 0x1f /* Touchscreen absolute values */ #define MXT_MAX_AREA 0xff @@ -232,8 +212,8 @@ struct mxt_info { struct mxt_object { u8 type; u16 start_address; - u8 size; /* Size of each instance - 1 */ - u8 instances; /* Number of instances - 1 */ + u8 size_minus_one; + u8 instances_minus_one; u8 num_report_ids; } __packed; @@ -250,19 +230,40 @@ struct mxt_data { const struct mxt_platform_data *pdata; struct mxt_object *object_table; struct mxt_info info; - bool is_tp; - unsigned int irq; unsigned int max_x; unsigned int max_y; + bool in_bootloader; + u32 config_crc; + u8 bootloader_addr; /* Cached parameters from object table */ u8 T6_reportid; + u16 T6_address; u8 T9_reportid_min; u8 T9_reportid_max; u8 T19_reportid; + + /* for fw update in bootloader */ + struct completion bl_completion; + + /* for reset handling */ + struct completion reset_completion; + + /* for config update handling */ + struct completion crc_completion; }; +static size_t mxt_obj_size(const struct mxt_object *obj) +{ + return obj->size_minus_one + 1; +} + +static size_t mxt_obj_instances(const struct mxt_object *obj) +{ + return obj->instances_minus_one + 1; +} + static bool mxt_object_readable(unsigned int type) { switch (type) { @@ -334,60 +335,190 @@ static void mxt_dump_message(struct device *dev, message->reportid, 7, message->message); } -static int mxt_check_bootloader(struct i2c_client *client, - unsigned int state) +static int mxt_wait_for_completion(struct mxt_data *data, + struct completion *comp, + unsigned int timeout_ms) +{ + struct device *dev = &data->client->dev; + unsigned long timeout = msecs_to_jiffies(timeout_ms); + long ret; + + ret = wait_for_completion_interruptible_timeout(comp, timeout); + if (ret < 0) { + return ret; + } else if (ret == 0) { + dev_err(dev, "Wait for completion timed out.\n"); + return -ETIMEDOUT; + } + return 0; +} + +static int mxt_bootloader_read(struct mxt_data *data, + u8 *val, unsigned int count) +{ + int ret; + struct i2c_msg msg; + + msg.addr = data->bootloader_addr; + msg.flags = data->client->flags & I2C_M_TEN; + msg.flags |= I2C_M_RD; + msg.len = count; + msg.buf = val; + + ret = i2c_transfer(data->client->adapter, &msg, 1); + + if (ret == 1) { + ret = 0; + } else { + ret = ret < 0 ? ret : -EIO; + dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", + __func__, ret); + } + + return ret; +} + +static int mxt_bootloader_write(struct mxt_data *data, + const u8 * const val, unsigned int count) +{ + int ret; + struct i2c_msg msg; + + msg.addr = data->bootloader_addr; + msg.flags = data->client->flags & I2C_M_TEN; + msg.len = count; + msg.buf = (u8 *)val; + + ret = i2c_transfer(data->client->adapter, &msg, 1); + if (ret == 1) { + ret = 0; + } else { + ret = ret < 0 ? ret : -EIO; + dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", + __func__, ret); + } + + return ret; +} + +static int mxt_lookup_bootloader_address(struct mxt_data *data) +{ + u8 appmode = data->client->addr; + u8 bootloader; + + switch (appmode) { + case 0x4a: + case 0x4b: + case 0x4c: + case 0x4d: + case 0x5a: + case 0x5b: + bootloader = appmode - 0x26; + break; + default: + dev_err(&data->client->dev, + "Appmode i2c address 0x%02x not found\n", + appmode); + return -EINVAL; + } + + data->bootloader_addr = bootloader; + return 0; +} + +static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) +{ + struct device *dev = &data->client->dev; + u8 buf[3]; + + if (val & MXT_BOOT_EXTENDED_ID) { + if (mxt_bootloader_read(data, &buf[0], 3) != 0) { + dev_err(dev, "%s: i2c failure\n", __func__); + return val; + } + + dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); + + return buf[0]; + } else { + dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); + + return val; + } +} + +static int mxt_check_bootloader(struct mxt_data *data, unsigned int state) { + struct device *dev = &data->client->dev; u8 val; + int ret; recheck: - if (i2c_master_recv(client, &val, 1) != 1) { - dev_err(&client->dev, "%s: i2c recv failed\n", __func__); - return -EIO; + if (state != MXT_WAITING_BOOTLOAD_CMD) { + /* + * In application update mode, the interrupt + * line signals state transitions. We must wait for the + * CHG assertion before reading the status byte. + * Once the status byte has been read, the line is deasserted. + */ + ret = mxt_wait_for_completion(data, &data->bl_completion, + MXT_FW_CHG_TIMEOUT); + if (ret) { + /* + * TODO: handle -ERESTARTSYS better by terminating + * fw update process before returning to userspace + * by writing length 0x000 to device (iff we are in + * WAITING_FRAME_DATA state). + */ + dev_err(dev, "Update wait error %d\n", ret); + return ret; + } } + ret = mxt_bootloader_read(data, &val, 1); + if (ret) + return ret; + + if (state == MXT_WAITING_BOOTLOAD_CMD) + val = mxt_get_bootloader_version(data, val); + switch (state) { case MXT_WAITING_BOOTLOAD_CMD: case MXT_WAITING_FRAME_DATA: val &= ~MXT_BOOT_STATUS_MASK; break; case MXT_FRAME_CRC_PASS: - if (val == MXT_FRAME_CRC_CHECK) + if (val == MXT_FRAME_CRC_CHECK) { goto recheck; + } else if (val == MXT_FRAME_CRC_FAIL) { + dev_err(dev, "Bootloader CRC fail\n"); + return -EINVAL; + } break; default: return -EINVAL; } if (val != state) { - dev_err(&client->dev, "Unvalid bootloader mode state\n"); + dev_err(dev, "Invalid bootloader state %02X != %02X\n", + val, state); return -EINVAL; } return 0; } -static int mxt_unlock_bootloader(struct i2c_client *client) +static int mxt_unlock_bootloader(struct mxt_data *data) { + int ret; u8 buf[2]; buf[0] = MXT_UNLOCK_CMD_LSB; buf[1] = MXT_UNLOCK_CMD_MSB; - if (i2c_master_send(client, buf, 2) != 2) { - dev_err(&client->dev, "%s: i2c send failed\n", __func__); - return -EIO; - } - - return 0; -} - -static int mxt_fw_write(struct i2c_client *client, - const u8 *data, unsigned int frame_size) -{ - if (i2c_master_send(client, data, frame_size) != frame_size) { - dev_err(&client->dev, "%s: i2c send failed\n", __func__); - return -EIO; - } + ret = mxt_bootloader_write(data, buf, 2); + if (ret) + return ret; return 0; } @@ -427,11 +558,6 @@ static int __mxt_read_reg(struct i2c_client *client, return ret; } -static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val) -{ - return __mxt_read_reg(client, reg, 1, val); -} - static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, const void *val) { @@ -479,7 +605,7 @@ mxt_get_object(struct mxt_data *data, u8 type) return object; } - dev_err(&data->client->dev, "Invalid object type\n"); + dev_err(&data->client->dev, "Invalid object type T%u\n", type); return NULL; } @@ -505,7 +631,7 @@ static int mxt_write_object(struct mxt_data *data, u16 reg; object = mxt_get_object(data, type); - if (!object || offset >= object->size + 1) + if (!object || offset >= mxt_obj_size(object)) return -EINVAL; reg = object->start_address; @@ -515,18 +641,25 @@ static int mxt_write_object(struct mxt_data *data, static void mxt_input_button(struct mxt_data *data, struct mxt_message *message) { struct input_dev *input = data->input_dev; + const struct mxt_platform_data *pdata = data->pdata; bool button; int i; /* Active-low switch */ - for (i = 0; i < MXT_NUM_GPIO; i++) { - if (data->pdata->key_map[i] == KEY_RESERVED) + for (i = 0; i < pdata->t19_num_keys; i++) { + if (pdata->t19_keymap[i] == KEY_RESERVED) continue; - button = !(message->message[0] & MXT_GPIO0_MASK << i); - input_report_key(input, data->pdata->key_map[i], button); + button = !(message->message[0] & (1 << i)); + input_report_key(input, pdata->t19_keymap[i], button); } } +static void mxt_input_sync(struct input_dev *input_dev) +{ + input_mt_report_pointer_emulation(input_dev, false); + input_sync(input_dev); +} + static void mxt_input_touchevent(struct mxt_data *data, struct mxt_message *message, int id) { @@ -536,44 +669,60 @@ static void mxt_input_touchevent(struct mxt_data *data, int x; int y; int area; - int pressure; + int amplitude; x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf); y = (message->message[2] << 4) | ((message->message[3] & 0xf)); + + /* Handle 10/12 bit switching */ if (data->max_x < 1024) - x = x >> 2; + x >>= 2; if (data->max_y < 1024) - y = y >> 2; + y >>= 2; area = message->message[4]; - pressure = message->message[5]; + amplitude = message->message[5]; dev_dbg(dev, "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", id, - (status & MXT_DETECT) ? 'D' : '.', - (status & MXT_PRESS) ? 'P' : '.', - (status & MXT_RELEASE) ? 'R' : '.', - (status & MXT_MOVE) ? 'M' : '.', - (status & MXT_VECTOR) ? 'V' : '.', - (status & MXT_AMP) ? 'A' : '.', - (status & MXT_SUPPRESS) ? 'S' : '.', - (status & MXT_UNGRIP) ? 'U' : '.', - x, y, area, pressure); + (status & MXT_T9_DETECT) ? 'D' : '.', + (status & MXT_T9_PRESS) ? 'P' : '.', + (status & MXT_T9_RELEASE) ? 'R' : '.', + (status & MXT_T9_MOVE) ? 'M' : '.', + (status & MXT_T9_VECTOR) ? 'V' : '.', + (status & MXT_T9_AMP) ? 'A' : '.', + (status & MXT_T9_SUPPRESS) ? 'S' : '.', + (status & MXT_T9_UNGRIP) ? 'U' : '.', + x, y, area, amplitude); input_mt_slot(input_dev, id); - input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, - status & MXT_DETECT); - if (status & MXT_DETECT) { + if (status & MXT_T9_DETECT) { + /* + * Multiple bits may be set if the host is slow to read + * the status messages, indicating all the events that + * have happened. + */ + if (status & MXT_T9_RELEASE) { + input_mt_report_slot_state(input_dev, + MT_TOOL_FINGER, 0); + mxt_input_sync(input_dev); + } + + /* Touch active */ + input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); input_report_abs(input_dev, ABS_MT_POSITION_X, x); input_report_abs(input_dev, ABS_MT_POSITION_Y, y); - input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); + input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); + } else { + /* Touch no longer active, close out slot */ + input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); } } -static unsigned mxt_extract_T6_csum(const u8 *csum) +static u16 mxt_extract_T6_csum(const u8 *csum) { return csum[0] | (csum[1] << 8) | (csum[2] << 16); } @@ -584,28 +733,37 @@ static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg) return (id >= data->T9_reportid_min && id <= data->T9_reportid_max); } -static irqreturn_t mxt_interrupt(int irq, void *dev_id) +static irqreturn_t mxt_process_messages_until_invalid(struct mxt_data *data) { - struct mxt_data *data = dev_id; struct mxt_message message; const u8 *payload = &message.message[0]; struct device *dev = &data->client->dev; u8 reportid; bool update_input = false; + u32 crc; do { if (mxt_read_message(data, &message)) { dev_err(dev, "Failed to read message\n"); - goto end; + return IRQ_NONE; } reportid = message.reportid; if (reportid == data->T6_reportid) { u8 status = payload[0]; - unsigned csum = mxt_extract_T6_csum(&payload[1]); + + crc = mxt_extract_T6_csum(&payload[1]); + if (crc != data->config_crc) { + data->config_crc = crc; + complete(&data->crc_completion); + } + dev_dbg(dev, "Status: %02x Config Checksum: %06x\n", - status, csum); + status, data->config_crc); + + if (status & MXT_T6_STATUS_RESET) + complete(&data->reset_completion); } else if (mxt_is_T9_message(data, &message)) { int id = reportid - data->T9_reportid_min; mxt_input_touchevent(data, &message, id); @@ -618,15 +776,96 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id) } } while (reportid != 0xff); - if (update_input) { - input_mt_report_pointer_emulation(data->input_dev, false); - input_sync(data->input_dev); - } + if (update_input) + mxt_input_sync(data->input_dev); -end: return IRQ_HANDLED; } +static irqreturn_t mxt_interrupt(int irq, void *dev_id) +{ + struct mxt_data *data = dev_id; + + if (data->in_bootloader) { + /* bootloader state transition completion */ + complete(&data->bl_completion); + return IRQ_HANDLED; + } + + return mxt_process_messages_until_invalid(data); +} + +static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, + u8 value, bool wait) +{ + u16 reg; + u8 command_register; + int timeout_counter = 0; + int ret; + + reg = data->T6_address + cmd_offset; + + ret = mxt_write_reg(data->client, reg, value); + if (ret) + return ret; + + if (!wait) + return 0; + + do { + msleep(20); + ret = __mxt_read_reg(data->client, reg, 1, &command_register); + if (ret) + return ret; + } while (command_register != 0 && timeout_counter++ <= 100); + + if (timeout_counter > 100) { + dev_err(&data->client->dev, "Command failed!\n"); + return -EIO; + } + + return 0; +} + +static int mxt_soft_reset(struct mxt_data *data) +{ + struct device *dev = &data->client->dev; + int ret = 0; + + dev_info(dev, "Resetting chip\n"); + + reinit_completion(&data->reset_completion); + + ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); + if (ret) + return ret; + + ret = mxt_wait_for_completion(data, &data->reset_completion, + MXT_RESET_TIMEOUT); + if (ret) + return ret; + + return 0; +} + +static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) +{ + /* + * On failure, CRC is set to 0 and config will always be + * downloaded. + */ + data->config_crc = 0; + reinit_completion(&data->crc_completion); + + mxt_t6_command(data, cmd, value, true); + + /* + * Wait for crc message. On failure, CRC is set to 0 and config will + * always be downloaded. + */ + mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); +} + static int mxt_check_reg_init(struct mxt_data *data) { const struct mxt_platform_data *pdata = data->pdata; @@ -641,13 +880,23 @@ static int mxt_check_reg_init(struct mxt_data *data) return 0; } + mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); + + if (data->config_crc == pdata->config_crc) { + dev_info(dev, "Config CRC 0x%06X: OK\n", data->config_crc); + return 0; + } + + dev_info(dev, "Config CRC 0x%06X: does not match 0x%06X\n", + data->config_crc, pdata->config_crc); + for (i = 0; i < data->info.object_num; i++) { object = data->object_table + i; if (!mxt_object_writable(object->type)) continue; - size = (object->size + 1) * (object->instances + 1); + size = mxt_obj_size(object) * mxt_obj_instances(object); if (index + size > pdata->config_length) { dev_err(dev, "Not enough config data!\n"); return -EINVAL; @@ -660,6 +909,14 @@ static int mxt_check_reg_init(struct mxt_data *data) index += size; } + mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); + + ret = mxt_soft_reset(data); + if (ret) + return ret; + + dev_info(dev, "Config successfully updated\n"); + return 0; } @@ -685,54 +942,6 @@ static int mxt_make_highchg(struct mxt_data *data) return 0; } -static void mxt_handle_pdata(struct mxt_data *data) -{ - const struct mxt_platform_data *pdata = data->pdata; - u8 voltage; - - /* Set touchscreen lines */ - mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_XSIZE, - pdata->x_line); - mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_YSIZE, - pdata->y_line); - - /* Set touchscreen orient */ - mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_ORIENT, - pdata->orient); - - /* Set touchscreen burst length */ - mxt_write_object(data, MXT_TOUCH_MULTI_T9, - MXT_TOUCH_BLEN, pdata->blen); - - /* Set touchscreen threshold */ - mxt_write_object(data, MXT_TOUCH_MULTI_T9, - MXT_TOUCH_TCHTHR, pdata->threshold); - - /* Set touchscreen resolution */ - mxt_write_object(data, MXT_TOUCH_MULTI_T9, - MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff); - mxt_write_object(data, MXT_TOUCH_MULTI_T9, - MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8); - mxt_write_object(data, MXT_TOUCH_MULTI_T9, - MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff); - mxt_write_object(data, MXT_TOUCH_MULTI_T9, - MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8); - - /* Set touchscreen voltage */ - if (pdata->voltage) { - if (pdata->voltage < MXT_VOLTAGE_DEFAULT) { - voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) / - MXT_VOLTAGE_STEP; - voltage = 0xff - voltage + 1; - } else - voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) / - MXT_VOLTAGE_STEP; - - mxt_write_object(data, MXT_SPT_CTECONFIG_T28, - MXT_CTE_VOLTAGE, voltage); - } -} - static int mxt_get_info(struct mxt_data *data) { struct i2c_client *client = data->client; @@ -772,7 +981,7 @@ static int mxt_get_object_table(struct mxt_data *data) if (object->num_report_ids) { min_id = reportid; reportid += object->num_report_ids * - (object->instances + 1); + mxt_obj_instances(object); max_id = reportid - 1; } else { min_id = 0; @@ -780,13 +989,15 @@ static int mxt_get_object_table(struct mxt_data *data) } dev_dbg(&data->client->dev, - "Type %2d Start %3d Size %3d Instances %2d ReportIDs %3u : %3u\n", - object->type, object->start_address, object->size + 1, - object->instances + 1, min_id, max_id); + "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", + object->type, object->start_address, + mxt_obj_size(object), mxt_obj_instances(object), + min_id, max_id); switch (object->type) { case MXT_GEN_COMMAND_T6: data->T6_reportid = min_id; + data->T6_address = object->start_address; break; case MXT_TOUCH_MULTI_T9: data->T9_reportid_min = min_id; @@ -811,12 +1022,59 @@ static void mxt_free_object_table(struct mxt_data *data) data->T19_reportid = 0; } +static int mxt_read_t9_resolution(struct mxt_data *data) +{ + struct i2c_client *client = data->client; + int error; + struct t9_range range; + unsigned char orient; + struct mxt_object *object; + + object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); + if (!object) + return -EINVAL; + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_RANGE, + sizeof(range), &range); + if (error) + return error; + + le16_to_cpus(&range.x); + le16_to_cpus(&range.y); + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_ORIENT, + 1, &orient); + if (error) + return error; + + /* Handle default values */ + if (range.x == 0) + range.x = 1023; + + if (range.y == 0) + range.y = 1023; + + if (orient & MXT_T9_ORIENT_SWITCH) { + data->max_x = range.y; + data->max_y = range.x; + } else { + data->max_x = range.x; + data->max_y = range.y; + } + + dev_dbg(&client->dev, + "Touchscreen size X%uY%u\n", data->max_x, data->max_y); + + return 0; +} + static int mxt_initialize(struct mxt_data *data) { struct i2c_client *client = data->client; struct mxt_info *info = &data->info; int error; - u8 val; error = mxt_get_info(data); if (error) @@ -832,47 +1090,29 @@ static int mxt_initialize(struct mxt_data *data) /* Get object table information */ error = mxt_get_object_table(data); - if (error) + if (error) { + dev_err(&client->dev, "Error %d reading object table\n", error); goto err_free_object_table; + } /* Check register init values */ error = mxt_check_reg_init(data); - if (error) - goto err_free_object_table; - - mxt_handle_pdata(data); - - /* Backup to memory */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_BACKUPNV, - MXT_BACKUP_VALUE); - msleep(MXT_BACKUP_TIME); - - /* Soft reset */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_RESET, 1); - msleep(MXT_RESET_TIME); - - /* Update matrix size at info struct */ - error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val); - if (error) + if (error) { + dev_err(&client->dev, "Error %d initializing configuration\n", + error); goto err_free_object_table; - info->matrix_xsize = val; + } - error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val); - if (error) + error = mxt_read_t9_resolution(data); + if (error) { + dev_err(&client->dev, "Failed to initialize T9 resolution\n"); goto err_free_object_table; - info->matrix_ysize = val; - - dev_info(&client->dev, - "Family ID: %u Variant ID: %u Major.Minor.Build: %u.%u.%02X\n", - info->family_id, info->variant_id, info->version >> 4, - info->version & 0xf, info->build); + } dev_info(&client->dev, - "Matrix X Size: %u Matrix Y Size: %u Object Num: %u\n", - info->matrix_xsize, info->matrix_ysize, - info->object_num); + "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", + info->family_id, info->variant_id, info->version >> 4, + info->version & 0xf, info->build, info->object_num); return 0; @@ -881,20 +1121,6 @@ err_free_object_table: return error; } -static void mxt_calc_resolution(struct mxt_data *data) -{ - unsigned int max_x = data->pdata->x_size - 1; - unsigned int max_y = data->pdata->y_size - 1; - - if (data->pdata->orient & MXT_XY_SWITCH) { - data->max_x = max_y; - data->max_y = max_x; - } else { - data->max_x = max_x; - data->max_y = max_y; - } -} - /* Firmware Version is returned as Major.Minor.Build */ static ssize_t mxt_fw_version_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -921,11 +1147,11 @@ static ssize_t mxt_show_instance(char *buf, int count, { int i; - if (object->instances > 0) + if (mxt_obj_instances(object) > 1) count += scnprintf(buf + count, PAGE_SIZE - count, "Instance %u\n", instance); - for (i = 0; i < object->size + 1; i++) + for (i = 0; i < mxt_obj_size(object); i++) count += scnprintf(buf + count, PAGE_SIZE - count, "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); @@ -958,8 +1184,8 @@ static ssize_t mxt_object_show(struct device *dev, count += scnprintf(buf + count, PAGE_SIZE - count, "T%u:\n", object->type); - for (j = 0; j < object->instances + 1; j++) { - u16 size = object->size + 1; + for (j = 0; j < mxt_obj_instances(object); j++) { + u16 size = mxt_obj_size(object); u16 addr = object->start_address + j * size; error = __mxt_read_reg(data->client, addr, size, obuf); @@ -975,13 +1201,38 @@ done: return error ?: count; } +static int mxt_check_firmware_format(struct device *dev, + const struct firmware *fw) +{ + unsigned int pos = 0; + char c; + + while (pos < fw->size) { + c = *(fw->data + pos); + + if (c < '0' || (c > '9' && c < 'A') || c > 'F') + return 0; + + pos++; + } + + /* + * To convert file try: + * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw + */ + dev_err(dev, "Aborting: firmware file must be in binary format\n"); + + return -EINVAL; +} + static int mxt_load_fw(struct device *dev, const char *fn) { struct mxt_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; const struct firmware *fw = NULL; unsigned int frame_size; unsigned int pos = 0; + unsigned int retry = 0; + unsigned int frame = 0; int ret; ret = request_firmware(&fw, fn, dev); @@ -990,59 +1241,91 @@ static int mxt_load_fw(struct device *dev, const char *fn) return ret; } + /* Check for incorrect enc file */ + ret = mxt_check_firmware_format(dev, fw); + if (ret) + goto release_firmware; + + ret = mxt_lookup_bootloader_address(data); + if (ret) + goto release_firmware; + /* Change to the bootloader mode */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_RESET, MXT_BOOT_VALUE); + data->in_bootloader = true; + + ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_BOOT_VALUE, false); + if (ret) + goto release_firmware; + msleep(MXT_RESET_TIME); - /* Change to slave address of bootloader */ - if (client->addr == MXT_APP_LOW) - client->addr = MXT_BOOT_LOW; - else - client->addr = MXT_BOOT_HIGH; + reinit_completion(&data->bl_completion); - ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD); + ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD); if (ret) - goto out; + goto disable_irq; /* Unlock bootloader */ - mxt_unlock_bootloader(client); + mxt_unlock_bootloader(data); while (pos < fw->size) { - ret = mxt_check_bootloader(client, - MXT_WAITING_FRAME_DATA); + ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA); if (ret) - goto out; + goto disable_irq; frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); - /* We should add 2 at frame size as the the firmware data is not - * included the CRC bytes. - */ + /* Take account of CRC bytes */ frame_size += 2; /* Write one frame to device */ - mxt_fw_write(client, fw->data + pos, frame_size); - - ret = mxt_check_bootloader(client, - MXT_FRAME_CRC_PASS); + ret = mxt_bootloader_write(data, fw->data + pos, frame_size); if (ret) - goto out; + goto disable_irq; - pos += frame_size; + ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS); + if (ret) { + retry++; - dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size); + /* Back off by 20ms per retry */ + msleep(retry * 20); + + if (retry > 20) { + dev_err(dev, "Retry count exceeded\n"); + goto disable_irq; + } + } else { + retry = 0; + pos += frame_size; + frame++; + } + + if (frame % 50 == 0) + dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", + frame, pos, fw->size); } -out: - release_firmware(fw); + /* Wait for flash. */ + ret = mxt_wait_for_completion(data, &data->bl_completion, + MXT_FW_RESET_TIME); + if (ret) + goto disable_irq; - /* Change to slave address of application */ - if (client->addr == MXT_BOOT_LOW) - client->addr = MXT_APP_LOW; - else - client->addr = MXT_APP_HIGH; + dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); + /* + * Wait for device to reset. Some bootloader versions do not assert + * the CHG line after bootloading has finished, so ignore potential + * errors. + */ + mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); + + data->in_bootloader = false; + +disable_irq: + disable_irq(data->irq); +release_firmware: + release_firmware(fw); return ret; } @@ -1053,28 +1336,23 @@ static ssize_t mxt_update_fw_store(struct device *dev, struct mxt_data *data = dev_get_drvdata(dev); int error; - disable_irq(data->irq); - error = mxt_load_fw(dev, MXT_FW_NAME); if (error) { dev_err(dev, "The firmware update failed(%d)\n", error); count = error; } else { - dev_dbg(dev, "The firmware update succeeded\n"); - - /* Wait for reset */ - msleep(MXT_FWRESET_TIME); + dev_info(dev, "The firmware update succeeded\n"); mxt_free_object_table(data); mxt_initialize(data); - } - enable_irq(data->irq); + enable_irq(data->irq); - error = mxt_make_highchg(data); - if (error) - return error; + error = mxt_make_highchg(data); + if (error) + return error; + } return count; } @@ -1134,6 +1412,8 @@ static int mxt_probe(struct i2c_client *client, struct input_dev *input_dev; int error; unsigned int num_mt_slots; + unsigned int mt_flags = 0; + int i; if (!pdata) return -EINVAL; @@ -1146,10 +1426,7 @@ static int mxt_probe(struct i2c_client *client, goto err_free_mem; } - data->is_tp = pdata && pdata->is_tp; - - input_dev->name = (data->is_tp) ? "Atmel maXTouch Touchpad" : - "Atmel maXTouch Touchscreen"; + input_dev->name = "Atmel maXTouch Touchscreen"; snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", client->adapter->nr, client->addr); @@ -1165,7 +1442,9 @@ static int mxt_probe(struct i2c_client *client, data->pdata = pdata; data->irq = client->irq; - mxt_calc_resolution(data); + init_completion(&data->bl_completion); + init_completion(&data->reset_completion); + init_completion(&data->crc_completion); error = mxt_initialize(data); if (error) @@ -1175,20 +1454,15 @@ static int mxt_probe(struct i2c_client *client, __set_bit(EV_KEY, input_dev->evbit); __set_bit(BTN_TOUCH, input_dev->keybit); - if (data->is_tp) { - int i; - __set_bit(INPUT_PROP_POINTER, input_dev->propbit); + if (pdata->t19_num_keys) { __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); - for (i = 0; i < MXT_NUM_GPIO; i++) - if (pdata->key_map[i] != KEY_RESERVED) - __set_bit(pdata->key_map[i], input_dev->keybit); + for (i = 0; i < pdata->t19_num_keys; i++) + if (pdata->t19_keymap[i] != KEY_RESERVED) + input_set_capability(input_dev, EV_KEY, + pdata->t19_keymap[i]); - __set_bit(BTN_TOOL_FINGER, input_dev->keybit); - __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); - __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); - __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); - __set_bit(BTN_TOOL_QUINTTAP, input_dev->keybit); + mt_flags |= INPUT_MT_POINTER; input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); @@ -1196,6 +1470,8 @@ static int mxt_probe(struct i2c_client *client, MXT_PIXELS_PER_MM); input_abs_set_res(input_dev, ABS_MT_POSITION_Y, MXT_PIXELS_PER_MM); + + input_dev->name = "Atmel maXTouch Touchpad"; } /* For single touch */ @@ -1208,7 +1484,7 @@ static int mxt_probe(struct i2c_client *client, /* For multi touch */ num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; - error = input_mt_init_slots(input_dev, num_mt_slots, 0); + error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); if (error) goto err_free_object; input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, @@ -1236,12 +1512,18 @@ static int mxt_probe(struct i2c_client *client, goto err_free_irq; error = input_register_device(input_dev); - if (error) + if (error) { + dev_err(&client->dev, "Error %d registering input device\n", + error); goto err_free_irq; + } error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); - if (error) + if (error) { + dev_err(&client->dev, "Failure %d creating sysfs group\n", + error); goto err_unregister_device; + } return 0; @@ -1294,11 +1576,7 @@ static int mxt_resume(struct device *dev) struct mxt_data *data = i2c_get_clientdata(client); struct input_dev *input_dev = data->input_dev; - /* Soft reset */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_RESET, 1); - - msleep(MXT_RESET_TIME); + mxt_soft_reset(data); mutex_lock(&input_dev->mutex); |