1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
26ccb1d8fSSangwon Jee /*
36ccb1d8fSSangwon Jee * MELFAS MIP4 Touchscreen
46ccb1d8fSSangwon Jee *
56ccb1d8fSSangwon Jee * Copyright (C) 2016 MELFAS Inc.
66ccb1d8fSSangwon Jee *
76ccb1d8fSSangwon Jee * Author : Sangwon Jee <jeesw@melfas.com>
86ccb1d8fSSangwon Jee */
96ccb1d8fSSangwon Jee
106ccb1d8fSSangwon Jee #include <linux/acpi.h>
116ccb1d8fSSangwon Jee #include <linux/delay.h>
126ccb1d8fSSangwon Jee #include <linux/firmware.h>
136ccb1d8fSSangwon Jee #include <linux/gpio/consumer.h>
146ccb1d8fSSangwon Jee #include <linux/i2c.h>
156ccb1d8fSSangwon Jee #include <linux/input.h>
166ccb1d8fSSangwon Jee #include <linux/input/mt.h>
176ccb1d8fSSangwon Jee #include <linux/interrupt.h>
186ccb1d8fSSangwon Jee #include <linux/module.h>
196ccb1d8fSSangwon Jee #include <linux/of.h>
206ccb1d8fSSangwon Jee #include <linux/slab.h>
216ccb1d8fSSangwon Jee #include <asm/unaligned.h>
226ccb1d8fSSangwon Jee
236ccb1d8fSSangwon Jee #define MIP4_DEVICE_NAME "mip4_ts"
246ccb1d8fSSangwon Jee
256ccb1d8fSSangwon Jee /*****************************************************************
266ccb1d8fSSangwon Jee * Protocol
27e2aad666SSangwon Jee * Version : MIP 4.0 Rev 5.4
286ccb1d8fSSangwon Jee *****************************************************************/
296ccb1d8fSSangwon Jee
306ccb1d8fSSangwon Jee /* Address */
316ccb1d8fSSangwon Jee #define MIP4_R0_BOOT 0x00
326ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_MODE 0x01
336ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_BUF_ADDR 0x10
346ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_STATUS 0x20
356ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_CMD 0x30
366ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_TARGET_ADDR 0x40
376ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_SIZE 0x44
386ccb1d8fSSangwon Jee
396ccb1d8fSSangwon Jee #define MIP4_R0_INFO 0x01
406ccb1d8fSSangwon Jee #define MIP4_R1_INFO_PRODUCT_NAME 0x00
416ccb1d8fSSangwon Jee #define MIP4_R1_INFO_RESOLUTION_X 0x10
426ccb1d8fSSangwon Jee #define MIP4_R1_INFO_RESOLUTION_Y 0x12
436ccb1d8fSSangwon Jee #define MIP4_R1_INFO_NODE_NUM_X 0x14
446ccb1d8fSSangwon Jee #define MIP4_R1_INFO_NODE_NUM_Y 0x15
456ccb1d8fSSangwon Jee #define MIP4_R1_INFO_KEY_NUM 0x16
467a3ed686SSangwon Jee #define MIP4_R1_INFO_PRESSURE_NUM 0x17
477a3ed686SSangwon Jee #define MIP4_R1_INFO_LENGTH_X 0x18
487a3ed686SSangwon Jee #define MIP4_R1_INFO_LENGTH_Y 0x1A
497a3ed686SSangwon Jee #define MIP4_R1_INFO_PPM_X 0x1C
507a3ed686SSangwon Jee #define MIP4_R1_INFO_PPM_Y 0x1D
516ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_BOOT 0x20
526ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_CORE 0x22
536ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_APP 0x24
546ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_PARAM 0x26
556ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_BOOT_START 0x30
566ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_BOOT_END 0x31
576ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_CORE_START 0x32
586ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_CORE_END 0x33
596ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_APP_START 0x34
606ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_APP_END 0x35
616ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_PARAM_START 0x36
626ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_PARAM_END 0x37
636ccb1d8fSSangwon Jee #define MIP4_R1_INFO_BUILD_DATE 0x40
646ccb1d8fSSangwon Jee #define MIP4_R1_INFO_BUILD_TIME 0x44
656ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CHECKSUM_PRECALC 0x48
666ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CHECKSUM_REALTIME 0x4A
676ccb1d8fSSangwon Jee #define MIP4_R1_INFO_PROTOCOL_NAME 0x50
686ccb1d8fSSangwon Jee #define MIP4_R1_INFO_PROTOCOL_VERSION 0x58
696ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_ID 0x70
706ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_NAME 0x71
716ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_VENDOR_ID 0x75
726ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_HW_CATEGORY 0x77
736ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CONTACT_THD_SCR 0x78
746ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CONTACT_THD_KEY 0x7A
75e2aad666SSangwon Jee #define MIP4_R1_INFO_PID 0x7C
76e2aad666SSangwon Jee #define MIP4_R1_INFO_VID 0x7E
77e2aad666SSangwon Jee #define MIP4_R1_INFO_SLAVE_ADDR 0x80
786ccb1d8fSSangwon Jee
796ccb1d8fSSangwon Jee #define MIP4_R0_EVENT 0x02
806ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_SUPPORTED_FUNC 0x00
816ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_FORMAT 0x04
826ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_SIZE 0x06
836ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_PACKET_INFO 0x10
846ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_PACKET_DATA 0x11
856ccb1d8fSSangwon Jee
866ccb1d8fSSangwon Jee #define MIP4_R0_CTRL 0x06
876ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_READY_STATUS 0x00
886ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_EVENT_READY 0x01
896ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_MODE 0x10
906ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_EVENT_TRIGGER_TYPE 0x11
916ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_RECALIBRATE 0x12
926ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_POWER_STATE 0x13
936ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_GESTURE_TYPE 0x14
946ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_DISABLE_ESD_ALERT 0x18
956ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_CHARGER_MODE 0x19
966ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_HIGH_SENS_MODE 0x1A
976ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_WINDOW_MODE 0x1B
986ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_PALM_REJECTION 0x1C
996ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_EDGE_CORRECTION 0x1D
1006ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_ENTER_GLOVE_MODE 0x1E
1016ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_I2C_ON_LPM 0x1F
1026ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_GESTURE_DEBUG 0x20
1036ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_PALM_EVENT 0x22
1046ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_PROXIMITY_SENSING 0x23
1056ccb1d8fSSangwon Jee
1066ccb1d8fSSangwon Jee /* Value */
1076ccb1d8fSSangwon Jee #define MIP4_BOOT_MODE_BOOT 0x01
1086ccb1d8fSSangwon Jee #define MIP4_BOOT_MODE_APP 0x02
1096ccb1d8fSSangwon Jee
1106ccb1d8fSSangwon Jee #define MIP4_BOOT_STATUS_BUSY 0x05
1116ccb1d8fSSangwon Jee #define MIP4_BOOT_STATUS_ERROR 0x0E
1126ccb1d8fSSangwon Jee #define MIP4_BOOT_STATUS_DONE 0xA0
1136ccb1d8fSSangwon Jee
1146ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_MASS_ERASE 0x15
1156ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_PROGRAM 0x54
1166ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_ERASE 0x8F
1176ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_WRITE 0xA5
1186ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_READ 0xC2
1196ccb1d8fSSangwon Jee
1206ccb1d8fSSangwon Jee #define MIP4_EVENT_INPUT_TYPE_KEY 0
1216ccb1d8fSSangwon Jee #define MIP4_EVENT_INPUT_TYPE_SCREEN 1
1226ccb1d8fSSangwon Jee #define MIP4_EVENT_INPUT_TYPE_PROXIMITY 2
1236ccb1d8fSSangwon Jee
1246ccb1d8fSSangwon Jee #define I2C_RETRY_COUNT 3 /* 2~ */
1256ccb1d8fSSangwon Jee
1266ccb1d8fSSangwon Jee #define MIP4_BUF_SIZE 128
1276ccb1d8fSSangwon Jee #define MIP4_MAX_FINGERS 10
1286ccb1d8fSSangwon Jee #define MIP4_MAX_KEYS 4
1296ccb1d8fSSangwon Jee
1306ccb1d8fSSangwon Jee #define MIP4_TOUCH_MAJOR_MIN 0
1316ccb1d8fSSangwon Jee #define MIP4_TOUCH_MAJOR_MAX 255
1326ccb1d8fSSangwon Jee #define MIP4_TOUCH_MINOR_MIN 0
1336ccb1d8fSSangwon Jee #define MIP4_TOUCH_MINOR_MAX 255
1346ccb1d8fSSangwon Jee #define MIP4_PRESSURE_MIN 0
1356ccb1d8fSSangwon Jee #define MIP4_PRESSURE_MAX 255
1366ccb1d8fSSangwon Jee
1376ccb1d8fSSangwon Jee #define MIP4_FW_NAME "melfas_mip4.fw"
1386ccb1d8fSSangwon Jee #define MIP4_FW_UPDATE_DEBUG 0 /* 0 (default) or 1 */
1396ccb1d8fSSangwon Jee
1406ccb1d8fSSangwon Jee struct mip4_fw_version {
1416ccb1d8fSSangwon Jee u16 boot;
1426ccb1d8fSSangwon Jee u16 core;
1436ccb1d8fSSangwon Jee u16 app;
1446ccb1d8fSSangwon Jee u16 param;
1456ccb1d8fSSangwon Jee };
1466ccb1d8fSSangwon Jee
1476ccb1d8fSSangwon Jee struct mip4_ts {
1486ccb1d8fSSangwon Jee struct i2c_client *client;
1496ccb1d8fSSangwon Jee struct input_dev *input;
1506ccb1d8fSSangwon Jee struct gpio_desc *gpio_ce;
1516ccb1d8fSSangwon Jee
1526ccb1d8fSSangwon Jee char phys[32];
1536ccb1d8fSSangwon Jee char product_name[16];
154e2aad666SSangwon Jee u16 product_id;
1554e1bff07SSangwon Jee char ic_name[4];
156c2c4ba82SSangwon Jee char fw_name[32];
1576ccb1d8fSSangwon Jee
1586ccb1d8fSSangwon Jee unsigned int max_x;
1596ccb1d8fSSangwon Jee unsigned int max_y;
1606ccb1d8fSSangwon Jee u8 node_x;
1616ccb1d8fSSangwon Jee u8 node_y;
1626ccb1d8fSSangwon Jee u8 node_key;
1637a3ed686SSangwon Jee unsigned int ppm_x;
1647a3ed686SSangwon Jee unsigned int ppm_y;
1656ccb1d8fSSangwon Jee
1666ccb1d8fSSangwon Jee struct mip4_fw_version fw_version;
1676ccb1d8fSSangwon Jee
1686ccb1d8fSSangwon Jee unsigned int event_size;
1696ccb1d8fSSangwon Jee unsigned int event_format;
1706ccb1d8fSSangwon Jee
1716ccb1d8fSSangwon Jee unsigned int key_num;
1726ccb1d8fSSangwon Jee unsigned short key_code[MIP4_MAX_KEYS];
1736ccb1d8fSSangwon Jee
1746ccb1d8fSSangwon Jee bool wake_irq_enabled;
1756ccb1d8fSSangwon Jee
1766ccb1d8fSSangwon Jee u8 buf[MIP4_BUF_SIZE];
1776ccb1d8fSSangwon Jee };
1786ccb1d8fSSangwon Jee
mip4_i2c_xfer(struct mip4_ts * ts,char * write_buf,unsigned int write_len,char * read_buf,unsigned int read_len)1796ccb1d8fSSangwon Jee static int mip4_i2c_xfer(struct mip4_ts *ts,
1806ccb1d8fSSangwon Jee char *write_buf, unsigned int write_len,
1816ccb1d8fSSangwon Jee char *read_buf, unsigned int read_len)
1826ccb1d8fSSangwon Jee {
1836ccb1d8fSSangwon Jee struct i2c_msg msg[] = {
1846ccb1d8fSSangwon Jee {
1856ccb1d8fSSangwon Jee .addr = ts->client->addr,
1866ccb1d8fSSangwon Jee .flags = 0,
1876ccb1d8fSSangwon Jee .buf = write_buf,
1886ccb1d8fSSangwon Jee .len = write_len,
1896ccb1d8fSSangwon Jee }, {
1906ccb1d8fSSangwon Jee .addr = ts->client->addr,
1916ccb1d8fSSangwon Jee .flags = I2C_M_RD,
1926ccb1d8fSSangwon Jee .buf = read_buf,
1936ccb1d8fSSangwon Jee .len = read_len,
1946ccb1d8fSSangwon Jee },
1956ccb1d8fSSangwon Jee };
1966ccb1d8fSSangwon Jee int retry = I2C_RETRY_COUNT;
1976ccb1d8fSSangwon Jee int res;
1986ccb1d8fSSangwon Jee int error;
1996ccb1d8fSSangwon Jee
2006ccb1d8fSSangwon Jee do {
2016ccb1d8fSSangwon Jee res = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
2026ccb1d8fSSangwon Jee if (res == ARRAY_SIZE(msg))
2036ccb1d8fSSangwon Jee return 0;
2046ccb1d8fSSangwon Jee
2056ccb1d8fSSangwon Jee error = res < 0 ? res : -EIO;
2066ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
2076ccb1d8fSSangwon Jee "%s - i2c_transfer failed: %d (%d)\n",
2086ccb1d8fSSangwon Jee __func__, error, res);
2096ccb1d8fSSangwon Jee } while (--retry);
2106ccb1d8fSSangwon Jee
2116ccb1d8fSSangwon Jee return error;
2126ccb1d8fSSangwon Jee }
2136ccb1d8fSSangwon Jee
mip4_parse_fw_version(const u8 * buf,struct mip4_fw_version * v)2146ccb1d8fSSangwon Jee static void mip4_parse_fw_version(const u8 *buf, struct mip4_fw_version *v)
2156ccb1d8fSSangwon Jee {
2166ccb1d8fSSangwon Jee v->boot = get_unaligned_le16(buf + 0);
2176ccb1d8fSSangwon Jee v->core = get_unaligned_le16(buf + 2);
2186ccb1d8fSSangwon Jee v->app = get_unaligned_le16(buf + 4);
2196ccb1d8fSSangwon Jee v->param = get_unaligned_le16(buf + 6);
2206ccb1d8fSSangwon Jee }
2216ccb1d8fSSangwon Jee
2226ccb1d8fSSangwon Jee /*
2236ccb1d8fSSangwon Jee * Read chip firmware version
2246ccb1d8fSSangwon Jee */
mip4_get_fw_version(struct mip4_ts * ts)2256ccb1d8fSSangwon Jee static int mip4_get_fw_version(struct mip4_ts *ts)
2266ccb1d8fSSangwon Jee {
2276ccb1d8fSSangwon Jee u8 cmd[] = { MIP4_R0_INFO, MIP4_R1_INFO_VERSION_BOOT };
2286ccb1d8fSSangwon Jee u8 buf[sizeof(ts->fw_version)];
2296ccb1d8fSSangwon Jee int error;
2306ccb1d8fSSangwon Jee
2316ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, sizeof(buf));
2326ccb1d8fSSangwon Jee if (error) {
2336ccb1d8fSSangwon Jee memset(&ts->fw_version, 0xff, sizeof(ts->fw_version));
2346ccb1d8fSSangwon Jee return error;
2356ccb1d8fSSangwon Jee }
2366ccb1d8fSSangwon Jee
2376ccb1d8fSSangwon Jee mip4_parse_fw_version(buf, &ts->fw_version);
2386ccb1d8fSSangwon Jee
2396ccb1d8fSSangwon Jee return 0;
2406ccb1d8fSSangwon Jee }
2416ccb1d8fSSangwon Jee
2426ccb1d8fSSangwon Jee /*
2436ccb1d8fSSangwon Jee * Fetch device characteristics
2446ccb1d8fSSangwon Jee */
mip4_query_device(struct mip4_ts * ts)2456ccb1d8fSSangwon Jee static int mip4_query_device(struct mip4_ts *ts)
2466ccb1d8fSSangwon Jee {
2474896fb13SDmitry Torokhov union i2c_smbus_data dummy;
2486ccb1d8fSSangwon Jee int error;
2496ccb1d8fSSangwon Jee u8 cmd[2];
2507a3ed686SSangwon Jee u8 buf[14];
2516ccb1d8fSSangwon Jee
2524896fb13SDmitry Torokhov /*
2534896fb13SDmitry Torokhov * Make sure there is something at this address as we do not
2544896fb13SDmitry Torokhov * consider subsequent failures as fatal.
2554896fb13SDmitry Torokhov */
2564896fb13SDmitry Torokhov if (i2c_smbus_xfer(ts->client->adapter, ts->client->addr,
2574896fb13SDmitry Torokhov 0, I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) {
2584896fb13SDmitry Torokhov dev_err(&ts->client->dev, "nothing at this address\n");
2594896fb13SDmitry Torokhov return -ENXIO;
2604896fb13SDmitry Torokhov }
2614896fb13SDmitry Torokhov
2626ccb1d8fSSangwon Jee /* Product name */
2636ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_INFO;
2646ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_INFO_PRODUCT_NAME;
2656ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd),
2666ccb1d8fSSangwon Jee ts->product_name, sizeof(ts->product_name));
2676ccb1d8fSSangwon Jee if (error)
2686ccb1d8fSSangwon Jee dev_warn(&ts->client->dev,
2696ccb1d8fSSangwon Jee "Failed to retrieve product name: %d\n", error);
2706ccb1d8fSSangwon Jee else
2716ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "product name: %.*s\n",
2726ccb1d8fSSangwon Jee (int)sizeof(ts->product_name), ts->product_name);
2736ccb1d8fSSangwon Jee
274e2aad666SSangwon Jee /* Product ID */
275e2aad666SSangwon Jee cmd[0] = MIP4_R0_INFO;
276e2aad666SSangwon Jee cmd[1] = MIP4_R1_INFO_PID;
277e2aad666SSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 2);
278e2aad666SSangwon Jee if (error) {
279e2aad666SSangwon Jee dev_warn(&ts->client->dev,
280e2aad666SSangwon Jee "Failed to retrieve product id: %d\n", error);
281e2aad666SSangwon Jee } else {
282e2aad666SSangwon Jee ts->product_id = get_unaligned_le16(&buf[0]);
283e2aad666SSangwon Jee dev_dbg(&ts->client->dev, "product id: %04X\n", ts->product_id);
284e2aad666SSangwon Jee }
285e2aad666SSangwon Jee
286c2c4ba82SSangwon Jee /* Firmware name */
287c2c4ba82SSangwon Jee snprintf(ts->fw_name, sizeof(ts->fw_name),
288c2c4ba82SSangwon Jee "melfas_mip4_%04X.fw", ts->product_id);
289c2c4ba82SSangwon Jee dev_dbg(&ts->client->dev, "firmware name: %s\n", ts->fw_name);
290c2c4ba82SSangwon Jee
2914e1bff07SSangwon Jee /* IC name */
2924e1bff07SSangwon Jee cmd[0] = MIP4_R0_INFO;
2934e1bff07SSangwon Jee cmd[1] = MIP4_R1_INFO_IC_NAME;
2944e1bff07SSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd),
2954e1bff07SSangwon Jee ts->ic_name, sizeof(ts->ic_name));
2964e1bff07SSangwon Jee if (error)
2974e1bff07SSangwon Jee dev_warn(&ts->client->dev,
2984e1bff07SSangwon Jee "Failed to retrieve IC name: %d\n", error);
2994e1bff07SSangwon Jee else
3004e1bff07SSangwon Jee dev_dbg(&ts->client->dev, "IC name: %.*s\n",
3014e1bff07SSangwon Jee (int)sizeof(ts->ic_name), ts->ic_name);
3024e1bff07SSangwon Jee
3036ccb1d8fSSangwon Jee /* Firmware version */
3046ccb1d8fSSangwon Jee error = mip4_get_fw_version(ts);
3056ccb1d8fSSangwon Jee if (error)
3066ccb1d8fSSangwon Jee dev_warn(&ts->client->dev,
3076ccb1d8fSSangwon Jee "Failed to retrieve FW version: %d\n", error);
3086ccb1d8fSSangwon Jee else
3096ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W Version: %04X %04X %04X %04X\n",
3106ccb1d8fSSangwon Jee ts->fw_version.boot, ts->fw_version.core,
3116ccb1d8fSSangwon Jee ts->fw_version.app, ts->fw_version.param);
3126ccb1d8fSSangwon Jee
3136ccb1d8fSSangwon Jee /* Resolution */
3146ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_INFO;
3156ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_INFO_RESOLUTION_X;
3167a3ed686SSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 14);
3176ccb1d8fSSangwon Jee if (error) {
3186ccb1d8fSSangwon Jee dev_warn(&ts->client->dev,
3196ccb1d8fSSangwon Jee "Failed to retrieve touchscreen parameters: %d\n",
3206ccb1d8fSSangwon Jee error);
3216ccb1d8fSSangwon Jee } else {
3226ccb1d8fSSangwon Jee ts->max_x = get_unaligned_le16(&buf[0]);
3236ccb1d8fSSangwon Jee ts->max_y = get_unaligned_le16(&buf[2]);
3246ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "max_x: %d, max_y: %d\n",
3256ccb1d8fSSangwon Jee ts->max_x, ts->max_y);
3266ccb1d8fSSangwon Jee
3276ccb1d8fSSangwon Jee ts->node_x = buf[4];
3286ccb1d8fSSangwon Jee ts->node_y = buf[5];
3296ccb1d8fSSangwon Jee ts->node_key = buf[6];
3306ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
3316ccb1d8fSSangwon Jee "node_x: %d, node_y: %d, node_key: %d\n",
3326ccb1d8fSSangwon Jee ts->node_x, ts->node_y, ts->node_key);
3336ccb1d8fSSangwon Jee
3347a3ed686SSangwon Jee ts->ppm_x = buf[12];
3357a3ed686SSangwon Jee ts->ppm_y = buf[13];
3367a3ed686SSangwon Jee dev_dbg(&ts->client->dev, "ppm_x: %d, ppm_y: %d\n",
3377a3ed686SSangwon Jee ts->ppm_x, ts->ppm_y);
3387a3ed686SSangwon Jee
3396ccb1d8fSSangwon Jee /* Key ts */
3406ccb1d8fSSangwon Jee if (ts->node_key > 0)
3416ccb1d8fSSangwon Jee ts->key_num = ts->node_key;
3426ccb1d8fSSangwon Jee }
3436ccb1d8fSSangwon Jee
3446ccb1d8fSSangwon Jee /* Protocol */
3456ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_EVENT;
3466ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_EVENT_SUPPORTED_FUNC;
3476ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 7);
3486ccb1d8fSSangwon Jee if (error) {
3496ccb1d8fSSangwon Jee dev_warn(&ts->client->dev,
3506ccb1d8fSSangwon Jee "Failed to retrieve device type: %d\n", error);
3516ccb1d8fSSangwon Jee ts->event_format = 0xff;
3526ccb1d8fSSangwon Jee } else {
3536ccb1d8fSSangwon Jee ts->event_format = get_unaligned_le16(&buf[4]);
3546ccb1d8fSSangwon Jee ts->event_size = buf[6];
3556ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "event_format: %d, event_size: %d\n",
3566ccb1d8fSSangwon Jee ts->event_format, ts->event_size);
3576ccb1d8fSSangwon Jee
3586ccb1d8fSSangwon Jee if (ts->event_format == 2 || ts->event_format > 3)
3596ccb1d8fSSangwon Jee dev_warn(&ts->client->dev,
3606ccb1d8fSSangwon Jee "Unknown event format %d\n", ts->event_format);
3616ccb1d8fSSangwon Jee }
3626ccb1d8fSSangwon Jee
3636ccb1d8fSSangwon Jee return 0;
3646ccb1d8fSSangwon Jee }
3656ccb1d8fSSangwon Jee
mip4_power_on(struct mip4_ts * ts)3666ccb1d8fSSangwon Jee static int mip4_power_on(struct mip4_ts *ts)
3676ccb1d8fSSangwon Jee {
3686ccb1d8fSSangwon Jee if (ts->gpio_ce) {
3696ccb1d8fSSangwon Jee gpiod_set_value_cansleep(ts->gpio_ce, 1);
3706ccb1d8fSSangwon Jee
3716ccb1d8fSSangwon Jee /* Booting delay : 200~300ms */
3726ccb1d8fSSangwon Jee usleep_range(200 * 1000, 300 * 1000);
3736ccb1d8fSSangwon Jee }
3746ccb1d8fSSangwon Jee
3756ccb1d8fSSangwon Jee return 0;
3766ccb1d8fSSangwon Jee }
3776ccb1d8fSSangwon Jee
mip4_power_off(struct mip4_ts * ts)3786ccb1d8fSSangwon Jee static void mip4_power_off(struct mip4_ts *ts)
3796ccb1d8fSSangwon Jee {
3806ccb1d8fSSangwon Jee if (ts->gpio_ce)
3816ccb1d8fSSangwon Jee gpiod_set_value_cansleep(ts->gpio_ce, 0);
3826ccb1d8fSSangwon Jee }
3836ccb1d8fSSangwon Jee
3846ccb1d8fSSangwon Jee /*
3856ccb1d8fSSangwon Jee * Clear touch input event status
3866ccb1d8fSSangwon Jee */
mip4_clear_input(struct mip4_ts * ts)3876ccb1d8fSSangwon Jee static void mip4_clear_input(struct mip4_ts *ts)
3886ccb1d8fSSangwon Jee {
3896ccb1d8fSSangwon Jee int i;
3906ccb1d8fSSangwon Jee
3916ccb1d8fSSangwon Jee /* Screen */
3926ccb1d8fSSangwon Jee for (i = 0; i < MIP4_MAX_FINGERS; i++) {
3936ccb1d8fSSangwon Jee input_mt_slot(ts->input, i);
3945fc70e35SJiada Wang input_mt_report_slot_inactive(ts->input);
3956ccb1d8fSSangwon Jee }
3966ccb1d8fSSangwon Jee
3976ccb1d8fSSangwon Jee /* Keys */
3986ccb1d8fSSangwon Jee for (i = 0; i < ts->key_num; i++)
3996ccb1d8fSSangwon Jee input_report_key(ts->input, ts->key_code[i], 0);
4006ccb1d8fSSangwon Jee
4016ccb1d8fSSangwon Jee input_sync(ts->input);
4026ccb1d8fSSangwon Jee }
4036ccb1d8fSSangwon Jee
mip4_enable(struct mip4_ts * ts)4046ccb1d8fSSangwon Jee static int mip4_enable(struct mip4_ts *ts)
4056ccb1d8fSSangwon Jee {
4066ccb1d8fSSangwon Jee int error;
4076ccb1d8fSSangwon Jee
4086ccb1d8fSSangwon Jee error = mip4_power_on(ts);
4096ccb1d8fSSangwon Jee if (error)
4106ccb1d8fSSangwon Jee return error;
4116ccb1d8fSSangwon Jee
4126ccb1d8fSSangwon Jee enable_irq(ts->client->irq);
4136ccb1d8fSSangwon Jee
4146ccb1d8fSSangwon Jee return 0;
4156ccb1d8fSSangwon Jee }
4166ccb1d8fSSangwon Jee
mip4_disable(struct mip4_ts * ts)4176ccb1d8fSSangwon Jee static void mip4_disable(struct mip4_ts *ts)
4186ccb1d8fSSangwon Jee {
4196ccb1d8fSSangwon Jee disable_irq(ts->client->irq);
4206ccb1d8fSSangwon Jee
4216ccb1d8fSSangwon Jee mip4_power_off(ts);
4226ccb1d8fSSangwon Jee
4236ccb1d8fSSangwon Jee mip4_clear_input(ts);
4246ccb1d8fSSangwon Jee }
4256ccb1d8fSSangwon Jee
4266ccb1d8fSSangwon Jee /*****************************************************************
4276ccb1d8fSSangwon Jee * Input handling
4286ccb1d8fSSangwon Jee *****************************************************************/
4296ccb1d8fSSangwon Jee
mip4_report_keys(struct mip4_ts * ts,u8 * packet)4306ccb1d8fSSangwon Jee static void mip4_report_keys(struct mip4_ts *ts, u8 *packet)
4316ccb1d8fSSangwon Jee {
4326ccb1d8fSSangwon Jee u8 key;
4336ccb1d8fSSangwon Jee bool down;
4346ccb1d8fSSangwon Jee
4356ccb1d8fSSangwon Jee switch (ts->event_format) {
4366ccb1d8fSSangwon Jee case 0:
4376ccb1d8fSSangwon Jee case 1:
4386ccb1d8fSSangwon Jee key = packet[0] & 0x0F;
4396ccb1d8fSSangwon Jee down = packet[0] & 0x80;
4406ccb1d8fSSangwon Jee break;
4416ccb1d8fSSangwon Jee
4426ccb1d8fSSangwon Jee case 3:
4436ccb1d8fSSangwon Jee default:
4446ccb1d8fSSangwon Jee key = packet[0] & 0x0F;
4456ccb1d8fSSangwon Jee down = packet[1] & 0x01;
4466ccb1d8fSSangwon Jee break;
4476ccb1d8fSSangwon Jee }
4486ccb1d8fSSangwon Jee
4496ccb1d8fSSangwon Jee /* Report key event */
4506ccb1d8fSSangwon Jee if (key >= 1 && key <= ts->key_num) {
4516ccb1d8fSSangwon Jee unsigned short keycode = ts->key_code[key - 1];
4526ccb1d8fSSangwon Jee
4536ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
4546ccb1d8fSSangwon Jee "Key - ID: %d, keycode: %d, state: %d\n",
4556ccb1d8fSSangwon Jee key, keycode, down);
4566ccb1d8fSSangwon Jee
4576ccb1d8fSSangwon Jee input_event(ts->input, EV_MSC, MSC_SCAN, keycode);
4586ccb1d8fSSangwon Jee input_report_key(ts->input, keycode, down);
4596ccb1d8fSSangwon Jee
4606ccb1d8fSSangwon Jee } else {
4616ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Unknown key: %d\n", key);
4626ccb1d8fSSangwon Jee }
4636ccb1d8fSSangwon Jee }
4646ccb1d8fSSangwon Jee
mip4_report_touch(struct mip4_ts * ts,u8 * packet)4656ccb1d8fSSangwon Jee static void mip4_report_touch(struct mip4_ts *ts, u8 *packet)
4666ccb1d8fSSangwon Jee {
4676ccb1d8fSSangwon Jee int id;
4687c0c3840SLee Jones bool __always_unused hover;
469210f8cabSJungHoon Hyun bool palm;
4706ccb1d8fSSangwon Jee bool state;
4716ccb1d8fSSangwon Jee u16 x, y;
4727c0c3840SLee Jones u8 __always_unused pressure_stage = 0;
4736ccb1d8fSSangwon Jee u8 pressure;
4747c0c3840SLee Jones u8 __always_unused size;
4756ccb1d8fSSangwon Jee u8 touch_major;
4766ccb1d8fSSangwon Jee u8 touch_minor;
4776ccb1d8fSSangwon Jee
4786ccb1d8fSSangwon Jee switch (ts->event_format) {
4796ccb1d8fSSangwon Jee case 0:
4806ccb1d8fSSangwon Jee case 1:
4816ccb1d8fSSangwon Jee /* Touch only */
4826ccb1d8fSSangwon Jee state = packet[0] & BIT(7);
4836ccb1d8fSSangwon Jee hover = packet[0] & BIT(5);
4846ccb1d8fSSangwon Jee palm = packet[0] & BIT(4);
4856ccb1d8fSSangwon Jee id = (packet[0] & 0x0F) - 1;
4866ccb1d8fSSangwon Jee x = ((packet[1] & 0x0F) << 8) | packet[2];
4876ccb1d8fSSangwon Jee y = (((packet[1] >> 4) & 0x0F) << 8) |
4886ccb1d8fSSangwon Jee packet[3];
4896ccb1d8fSSangwon Jee pressure = packet[4];
4906ccb1d8fSSangwon Jee size = packet[5];
4916ccb1d8fSSangwon Jee if (ts->event_format == 0) {
4926ccb1d8fSSangwon Jee touch_major = packet[5];
4936ccb1d8fSSangwon Jee touch_minor = packet[5];
4946ccb1d8fSSangwon Jee } else {
4956ccb1d8fSSangwon Jee touch_major = packet[6];
4966ccb1d8fSSangwon Jee touch_minor = packet[7];
4976ccb1d8fSSangwon Jee }
4986ccb1d8fSSangwon Jee break;
4996ccb1d8fSSangwon Jee
5006ccb1d8fSSangwon Jee case 3:
5016ccb1d8fSSangwon Jee default:
5026ccb1d8fSSangwon Jee /* Touch + Force(Pressure) */
5036ccb1d8fSSangwon Jee id = (packet[0] & 0x0F) - 1;
5046ccb1d8fSSangwon Jee hover = packet[1] & BIT(2);
5056ccb1d8fSSangwon Jee palm = packet[1] & BIT(1);
5066ccb1d8fSSangwon Jee state = packet[1] & BIT(0);
5076ccb1d8fSSangwon Jee x = ((packet[2] & 0x0F) << 8) | packet[3];
5086ccb1d8fSSangwon Jee y = (((packet[2] >> 4) & 0x0F) << 8) |
5096ccb1d8fSSangwon Jee packet[4];
5106ccb1d8fSSangwon Jee size = packet[6];
5116ccb1d8fSSangwon Jee pressure_stage = (packet[7] & 0xF0) >> 4;
5126ccb1d8fSSangwon Jee pressure = ((packet[7] & 0x0F) << 8) |
5136ccb1d8fSSangwon Jee packet[8];
5146ccb1d8fSSangwon Jee touch_major = packet[9];
5156ccb1d8fSSangwon Jee touch_minor = packet[10];
5166ccb1d8fSSangwon Jee break;
5176ccb1d8fSSangwon Jee }
5186ccb1d8fSSangwon Jee
5196ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
5206ccb1d8fSSangwon Jee "Screen - Slot: %d State: %d X: %04d Y: %04d Z: %d\n",
5216ccb1d8fSSangwon Jee id, state, x, y, pressure);
5226ccb1d8fSSangwon Jee
5236ccb1d8fSSangwon Jee if (unlikely(id < 0 || id >= MIP4_MAX_FINGERS)) {
5246ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Screen - invalid slot ID: %d\n", id);
525210f8cabSJungHoon Hyun goto out;
526210f8cabSJungHoon Hyun }
527210f8cabSJungHoon Hyun
5286ccb1d8fSSangwon Jee input_mt_slot(ts->input, id);
529210f8cabSJungHoon Hyun if (input_mt_report_slot_state(ts->input,
530210f8cabSJungHoon Hyun palm ? MT_TOOL_PALM : MT_TOOL_FINGER,
531210f8cabSJungHoon Hyun state)) {
5326ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_POSITION_X, x);
5336ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
5346ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_PRESSURE, pressure);
5356ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, touch_major);
5366ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_TOUCH_MINOR, touch_minor);
5376ccb1d8fSSangwon Jee }
5386ccb1d8fSSangwon Jee
539210f8cabSJungHoon Hyun out:
5406ccb1d8fSSangwon Jee input_mt_sync_frame(ts->input);
5416ccb1d8fSSangwon Jee }
5426ccb1d8fSSangwon Jee
mip4_handle_packet(struct mip4_ts * ts,u8 * packet)5436ccb1d8fSSangwon Jee static int mip4_handle_packet(struct mip4_ts *ts, u8 *packet)
5446ccb1d8fSSangwon Jee {
5456ccb1d8fSSangwon Jee u8 type;
5466ccb1d8fSSangwon Jee
5476ccb1d8fSSangwon Jee switch (ts->event_format) {
5486ccb1d8fSSangwon Jee case 0:
5496ccb1d8fSSangwon Jee case 1:
5506ccb1d8fSSangwon Jee type = (packet[0] & 0x40) >> 6;
5516ccb1d8fSSangwon Jee break;
5526ccb1d8fSSangwon Jee
5536ccb1d8fSSangwon Jee case 3:
5546ccb1d8fSSangwon Jee type = (packet[0] & 0xF0) >> 4;
5556ccb1d8fSSangwon Jee break;
5566ccb1d8fSSangwon Jee
5576ccb1d8fSSangwon Jee default:
5586ccb1d8fSSangwon Jee /* Should not happen unless we have corrupted firmware */
5596ccb1d8fSSangwon Jee return -EINVAL;
5606ccb1d8fSSangwon Jee }
5616ccb1d8fSSangwon Jee
5626ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "Type: %d\n", type);
5636ccb1d8fSSangwon Jee
5646ccb1d8fSSangwon Jee /* Report input event */
5656ccb1d8fSSangwon Jee switch (type) {
5666ccb1d8fSSangwon Jee case MIP4_EVENT_INPUT_TYPE_KEY:
5676ccb1d8fSSangwon Jee mip4_report_keys(ts, packet);
5686ccb1d8fSSangwon Jee break;
5696ccb1d8fSSangwon Jee
5706ccb1d8fSSangwon Jee case MIP4_EVENT_INPUT_TYPE_SCREEN:
5716ccb1d8fSSangwon Jee mip4_report_touch(ts, packet);
5726ccb1d8fSSangwon Jee break;
5736ccb1d8fSSangwon Jee
5746ccb1d8fSSangwon Jee default:
5756ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Unknown event type: %d\n", type);
5766ccb1d8fSSangwon Jee break;
5776ccb1d8fSSangwon Jee }
5786ccb1d8fSSangwon Jee
5796ccb1d8fSSangwon Jee return 0;
5806ccb1d8fSSangwon Jee }
5816ccb1d8fSSangwon Jee
mip4_interrupt(int irq,void * dev_id)5826ccb1d8fSSangwon Jee static irqreturn_t mip4_interrupt(int irq, void *dev_id)
5836ccb1d8fSSangwon Jee {
5846ccb1d8fSSangwon Jee struct mip4_ts *ts = dev_id;
5856ccb1d8fSSangwon Jee struct i2c_client *client = ts->client;
5866ccb1d8fSSangwon Jee unsigned int i;
5876ccb1d8fSSangwon Jee int error;
5886ccb1d8fSSangwon Jee u8 cmd[2];
5896ccb1d8fSSangwon Jee u8 size;
5906ccb1d8fSSangwon Jee bool alert;
5916ccb1d8fSSangwon Jee
5926ccb1d8fSSangwon Jee /* Read packet info */
5936ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_EVENT;
5946ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_EVENT_PACKET_INFO;
5956ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), ts->buf, 1);
5966ccb1d8fSSangwon Jee if (error) {
5976ccb1d8fSSangwon Jee dev_err(&client->dev,
5986ccb1d8fSSangwon Jee "Failed to read packet info: %d\n", error);
5996ccb1d8fSSangwon Jee goto out;
6006ccb1d8fSSangwon Jee }
6016ccb1d8fSSangwon Jee
6026ccb1d8fSSangwon Jee size = ts->buf[0] & 0x7F;
6036ccb1d8fSSangwon Jee alert = ts->buf[0] & BIT(7);
6046ccb1d8fSSangwon Jee dev_dbg(&client->dev, "packet size: %d, alert: %d\n", size, alert);
6056ccb1d8fSSangwon Jee
6066ccb1d8fSSangwon Jee /* Check size */
6076ccb1d8fSSangwon Jee if (!size) {
6086ccb1d8fSSangwon Jee dev_err(&client->dev, "Empty packet\n");
6096ccb1d8fSSangwon Jee goto out;
6106ccb1d8fSSangwon Jee }
6116ccb1d8fSSangwon Jee
6126ccb1d8fSSangwon Jee /* Read packet data */
6136ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_EVENT;
6146ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_EVENT_PACKET_DATA;
6156ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), ts->buf, size);
6166ccb1d8fSSangwon Jee if (error) {
6176ccb1d8fSSangwon Jee dev_err(&client->dev,
6186ccb1d8fSSangwon Jee "Failed to read packet data: %d\n", error);
6196ccb1d8fSSangwon Jee goto out;
6206ccb1d8fSSangwon Jee }
6216ccb1d8fSSangwon Jee
6226ccb1d8fSSangwon Jee if (alert) {
6236ccb1d8fSSangwon Jee dev_dbg(&client->dev, "Alert: %d\n", ts->buf[0]);
6246ccb1d8fSSangwon Jee } else {
6256ccb1d8fSSangwon Jee for (i = 0; i < size; i += ts->event_size) {
6266ccb1d8fSSangwon Jee error = mip4_handle_packet(ts, &ts->buf[i]);
6276ccb1d8fSSangwon Jee if (error)
6286ccb1d8fSSangwon Jee break;
6296ccb1d8fSSangwon Jee }
6306ccb1d8fSSangwon Jee
6316ccb1d8fSSangwon Jee input_sync(ts->input);
6326ccb1d8fSSangwon Jee }
6336ccb1d8fSSangwon Jee
6346ccb1d8fSSangwon Jee out:
6356ccb1d8fSSangwon Jee return IRQ_HANDLED;
6366ccb1d8fSSangwon Jee }
6376ccb1d8fSSangwon Jee
mip4_input_open(struct input_dev * dev)6386ccb1d8fSSangwon Jee static int mip4_input_open(struct input_dev *dev)
6396ccb1d8fSSangwon Jee {
6406ccb1d8fSSangwon Jee struct mip4_ts *ts = input_get_drvdata(dev);
6416ccb1d8fSSangwon Jee
6426ccb1d8fSSangwon Jee return mip4_enable(ts);
6436ccb1d8fSSangwon Jee }
6446ccb1d8fSSangwon Jee
mip4_input_close(struct input_dev * dev)6456ccb1d8fSSangwon Jee static void mip4_input_close(struct input_dev *dev)
6466ccb1d8fSSangwon Jee {
6476ccb1d8fSSangwon Jee struct mip4_ts *ts = input_get_drvdata(dev);
6486ccb1d8fSSangwon Jee
6496ccb1d8fSSangwon Jee mip4_disable(ts);
6506ccb1d8fSSangwon Jee }
6516ccb1d8fSSangwon Jee
6526ccb1d8fSSangwon Jee /*****************************************************************
6536ccb1d8fSSangwon Jee * Firmware update
6546ccb1d8fSSangwon Jee *****************************************************************/
6556ccb1d8fSSangwon Jee
6566ccb1d8fSSangwon Jee /* Firmware Info */
6576ccb1d8fSSangwon Jee #define MIP4_BL_PAGE_SIZE 512 /* 512 */
6586ccb1d8fSSangwon Jee #define MIP4_BL_PACKET_SIZE 512 /* 512, 256, 128, 64, ... */
6596ccb1d8fSSangwon Jee
6606ccb1d8fSSangwon Jee /*
6616ccb1d8fSSangwon Jee * Firmware binary tail info
6626ccb1d8fSSangwon Jee */
6636ccb1d8fSSangwon Jee
6646ccb1d8fSSangwon Jee struct mip4_bin_tail {
6656ccb1d8fSSangwon Jee u8 tail_mark[4];
6666ccb1d8fSSangwon Jee u8 chip_name[4];
6676ccb1d8fSSangwon Jee
6686ccb1d8fSSangwon Jee __le32 bin_start_addr;
6696ccb1d8fSSangwon Jee __le32 bin_length;
6706ccb1d8fSSangwon Jee
6716ccb1d8fSSangwon Jee __le16 ver_boot;
6726ccb1d8fSSangwon Jee __le16 ver_core;
6736ccb1d8fSSangwon Jee __le16 ver_app;
6746ccb1d8fSSangwon Jee __le16 ver_param;
6756ccb1d8fSSangwon Jee
6766ccb1d8fSSangwon Jee u8 boot_start;
6776ccb1d8fSSangwon Jee u8 boot_end;
6786ccb1d8fSSangwon Jee u8 core_start;
6796ccb1d8fSSangwon Jee u8 core_end;
6806ccb1d8fSSangwon Jee u8 app_start;
6816ccb1d8fSSangwon Jee u8 app_end;
6826ccb1d8fSSangwon Jee u8 param_start;
6836ccb1d8fSSangwon Jee u8 param_end;
6846ccb1d8fSSangwon Jee
6856ccb1d8fSSangwon Jee u8 checksum_type;
6866ccb1d8fSSangwon Jee u8 hw_category;
6876ccb1d8fSSangwon Jee
6886ccb1d8fSSangwon Jee __le16 param_id;
6896ccb1d8fSSangwon Jee __le32 param_length;
6906ccb1d8fSSangwon Jee __le32 build_date;
6916ccb1d8fSSangwon Jee __le32 build_time;
6926ccb1d8fSSangwon Jee
6936ccb1d8fSSangwon Jee __le32 reserved1;
6946ccb1d8fSSangwon Jee __le32 reserved2;
6956ccb1d8fSSangwon Jee __le16 reserved3;
6966ccb1d8fSSangwon Jee __le16 tail_size;
6976ccb1d8fSSangwon Jee __le32 crc;
6986ccb1d8fSSangwon Jee } __packed;
6996ccb1d8fSSangwon Jee
7006ccb1d8fSSangwon Jee #define MIP4_BIN_TAIL_MARK "MBT\001"
7016ccb1d8fSSangwon Jee #define MIP4_BIN_TAIL_SIZE (sizeof(struct mip4_bin_tail))
7026ccb1d8fSSangwon Jee
7036ccb1d8fSSangwon Jee /*
7046ccb1d8fSSangwon Jee * Bootloader - Read status
7056ccb1d8fSSangwon Jee */
mip4_bl_read_status(struct mip4_ts * ts)7066ccb1d8fSSangwon Jee static int mip4_bl_read_status(struct mip4_ts *ts)
7076ccb1d8fSSangwon Jee {
7086ccb1d8fSSangwon Jee u8 cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_STATUS };
7096ccb1d8fSSangwon Jee u8 result;
7106ccb1d8fSSangwon Jee struct i2c_msg msg[] = {
7116ccb1d8fSSangwon Jee {
7126ccb1d8fSSangwon Jee .addr = ts->client->addr,
7136ccb1d8fSSangwon Jee .flags = 0,
7146ccb1d8fSSangwon Jee .buf = cmd,
7156ccb1d8fSSangwon Jee .len = sizeof(cmd),
7166ccb1d8fSSangwon Jee }, {
7176ccb1d8fSSangwon Jee .addr = ts->client->addr,
7186ccb1d8fSSangwon Jee .flags = I2C_M_RD,
7196ccb1d8fSSangwon Jee .buf = &result,
7206ccb1d8fSSangwon Jee .len = sizeof(result),
7216ccb1d8fSSangwon Jee },
7226ccb1d8fSSangwon Jee };
7236ccb1d8fSSangwon Jee int ret;
7246ccb1d8fSSangwon Jee int error;
7256ccb1d8fSSangwon Jee int retry = 1000;
7266ccb1d8fSSangwon Jee
7276ccb1d8fSSangwon Jee do {
7286ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
7296ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) {
7306ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
7316ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
7326ccb1d8fSSangwon Jee "Failed to read bootloader status: %d\n",
7336ccb1d8fSSangwon Jee error);
7346ccb1d8fSSangwon Jee return error;
7356ccb1d8fSSangwon Jee }
7366ccb1d8fSSangwon Jee
7376ccb1d8fSSangwon Jee switch (result) {
7386ccb1d8fSSangwon Jee case MIP4_BOOT_STATUS_DONE:
7396ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "%s - done\n", __func__);
7406ccb1d8fSSangwon Jee return 0;
7416ccb1d8fSSangwon Jee
7426ccb1d8fSSangwon Jee case MIP4_BOOT_STATUS_ERROR:
7436ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Bootloader failure\n");
7446ccb1d8fSSangwon Jee return -EIO;
7456ccb1d8fSSangwon Jee
7466ccb1d8fSSangwon Jee case MIP4_BOOT_STATUS_BUSY:
7476ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "%s - Busy\n", __func__);
7486ccb1d8fSSangwon Jee error = -EBUSY;
7496ccb1d8fSSangwon Jee break;
7506ccb1d8fSSangwon Jee
7516ccb1d8fSSangwon Jee default:
7526ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
7536ccb1d8fSSangwon Jee "Unexpected bootloader status: %#02x\n",
7546ccb1d8fSSangwon Jee result);
7556ccb1d8fSSangwon Jee error = -EINVAL;
7566ccb1d8fSSangwon Jee break;
7576ccb1d8fSSangwon Jee }
7586ccb1d8fSSangwon Jee
7596ccb1d8fSSangwon Jee usleep_range(1000, 2000);
7606ccb1d8fSSangwon Jee } while (--retry);
7616ccb1d8fSSangwon Jee
7626ccb1d8fSSangwon Jee return error;
7636ccb1d8fSSangwon Jee }
7646ccb1d8fSSangwon Jee
7656ccb1d8fSSangwon Jee /*
7666ccb1d8fSSangwon Jee * Bootloader - Change mode
7676ccb1d8fSSangwon Jee */
mip4_bl_change_mode(struct mip4_ts * ts,u8 mode)7686ccb1d8fSSangwon Jee static int mip4_bl_change_mode(struct mip4_ts *ts, u8 mode)
7696ccb1d8fSSangwon Jee {
7706ccb1d8fSSangwon Jee u8 mode_chg_cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_MODE, mode };
7716ccb1d8fSSangwon Jee u8 mode_read_cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_MODE };
7726ccb1d8fSSangwon Jee u8 result;
7736ccb1d8fSSangwon Jee struct i2c_msg msg[] = {
7746ccb1d8fSSangwon Jee {
7756ccb1d8fSSangwon Jee .addr = ts->client->addr,
7766ccb1d8fSSangwon Jee .flags = 0,
7776ccb1d8fSSangwon Jee .buf = mode_read_cmd,
7786ccb1d8fSSangwon Jee .len = sizeof(mode_read_cmd),
7796ccb1d8fSSangwon Jee }, {
7806ccb1d8fSSangwon Jee .addr = ts->client->addr,
7816ccb1d8fSSangwon Jee .flags = I2C_M_RD,
7826ccb1d8fSSangwon Jee .buf = &result,
7836ccb1d8fSSangwon Jee .len = sizeof(result),
7846ccb1d8fSSangwon Jee },
7856ccb1d8fSSangwon Jee };
7866ccb1d8fSSangwon Jee int retry = 10;
7876ccb1d8fSSangwon Jee int ret;
7886ccb1d8fSSangwon Jee int error;
7896ccb1d8fSSangwon Jee
7906ccb1d8fSSangwon Jee do {
7916ccb1d8fSSangwon Jee /* Send mode change command */
7926ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client,
7936ccb1d8fSSangwon Jee mode_chg_cmd, sizeof(mode_chg_cmd));
7946ccb1d8fSSangwon Jee if (ret != sizeof(mode_chg_cmd)) {
7956ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
7966ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
7976ccb1d8fSSangwon Jee "Failed to send %d mode change: %d (%d)\n",
7986ccb1d8fSSangwon Jee mode, error, ret);
7996ccb1d8fSSangwon Jee return error;
8006ccb1d8fSSangwon Jee }
8016ccb1d8fSSangwon Jee
8026ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
8036ccb1d8fSSangwon Jee "Sent mode change request (mode: %d)\n", mode);
8046ccb1d8fSSangwon Jee
8056ccb1d8fSSangwon Jee /* Wait */
8066ccb1d8fSSangwon Jee msleep(1000);
8076ccb1d8fSSangwon Jee
8086ccb1d8fSSangwon Jee /* Verify target mode */
8096ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
8106ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) {
8116ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
8126ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
8136ccb1d8fSSangwon Jee "Failed to read device mode: %d\n", error);
8146ccb1d8fSSangwon Jee return error;
8156ccb1d8fSSangwon Jee }
8166ccb1d8fSSangwon Jee
8176ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
8186ccb1d8fSSangwon Jee "Current device mode: %d, want: %d\n", result, mode);
8196ccb1d8fSSangwon Jee
8206ccb1d8fSSangwon Jee if (result == mode)
8216ccb1d8fSSangwon Jee return 0;
8226ccb1d8fSSangwon Jee
8236ccb1d8fSSangwon Jee } while (--retry);
8246ccb1d8fSSangwon Jee
8256ccb1d8fSSangwon Jee return -EIO;
8266ccb1d8fSSangwon Jee }
8276ccb1d8fSSangwon Jee
8286ccb1d8fSSangwon Jee /*
8296ccb1d8fSSangwon Jee * Bootloader - Start bootloader mode
8306ccb1d8fSSangwon Jee */
mip4_bl_enter(struct mip4_ts * ts)8316ccb1d8fSSangwon Jee static int mip4_bl_enter(struct mip4_ts *ts)
8326ccb1d8fSSangwon Jee {
8336ccb1d8fSSangwon Jee return mip4_bl_change_mode(ts, MIP4_BOOT_MODE_BOOT);
8346ccb1d8fSSangwon Jee }
8356ccb1d8fSSangwon Jee
8366ccb1d8fSSangwon Jee /*
8376ccb1d8fSSangwon Jee * Bootloader - Exit bootloader mode
8386ccb1d8fSSangwon Jee */
mip4_bl_exit(struct mip4_ts * ts)8396ccb1d8fSSangwon Jee static int mip4_bl_exit(struct mip4_ts *ts)
8406ccb1d8fSSangwon Jee {
8416ccb1d8fSSangwon Jee return mip4_bl_change_mode(ts, MIP4_BOOT_MODE_APP);
8426ccb1d8fSSangwon Jee }
8436ccb1d8fSSangwon Jee
mip4_bl_get_address(struct mip4_ts * ts,u16 * buf_addr)8446ccb1d8fSSangwon Jee static int mip4_bl_get_address(struct mip4_ts *ts, u16 *buf_addr)
8456ccb1d8fSSangwon Jee {
8466ccb1d8fSSangwon Jee u8 cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_BUF_ADDR };
8476ccb1d8fSSangwon Jee u8 result[sizeof(u16)];
8486ccb1d8fSSangwon Jee struct i2c_msg msg[] = {
8496ccb1d8fSSangwon Jee {
8506ccb1d8fSSangwon Jee .addr = ts->client->addr,
8516ccb1d8fSSangwon Jee .flags = 0,
8526ccb1d8fSSangwon Jee .buf = cmd,
8536ccb1d8fSSangwon Jee .len = sizeof(cmd),
8546ccb1d8fSSangwon Jee }, {
8556ccb1d8fSSangwon Jee .addr = ts->client->addr,
8566ccb1d8fSSangwon Jee .flags = I2C_M_RD,
8576ccb1d8fSSangwon Jee .buf = result,
8586ccb1d8fSSangwon Jee .len = sizeof(result),
8596ccb1d8fSSangwon Jee },
8606ccb1d8fSSangwon Jee };
8616ccb1d8fSSangwon Jee int ret;
8626ccb1d8fSSangwon Jee int error;
8636ccb1d8fSSangwon Jee
8646ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
8656ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) {
8666ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
8676ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
8686ccb1d8fSSangwon Jee "Failed to retrieve bootloader buffer address: %d\n",
8696ccb1d8fSSangwon Jee error);
8706ccb1d8fSSangwon Jee return error;
8716ccb1d8fSSangwon Jee }
8726ccb1d8fSSangwon Jee
8736ccb1d8fSSangwon Jee *buf_addr = get_unaligned_le16(result);
8746ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
8756ccb1d8fSSangwon Jee "Bootloader buffer address %#04x\n", *buf_addr);
8766ccb1d8fSSangwon Jee
8776ccb1d8fSSangwon Jee return 0;
8786ccb1d8fSSangwon Jee }
8796ccb1d8fSSangwon Jee
mip4_bl_program_page(struct mip4_ts * ts,int offset,const u8 * data,int length,u16 buf_addr)8806ccb1d8fSSangwon Jee static int mip4_bl_program_page(struct mip4_ts *ts, int offset,
8816ccb1d8fSSangwon Jee const u8 *data, int length, u16 buf_addr)
8826ccb1d8fSSangwon Jee {
8836ccb1d8fSSangwon Jee u8 cmd[6];
8846ccb1d8fSSangwon Jee u8 *data_buf;
8856ccb1d8fSSangwon Jee u16 buf_offset;
8866ccb1d8fSSangwon Jee int ret;
8876ccb1d8fSSangwon Jee int error;
8886ccb1d8fSSangwon Jee
8896ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "Writing page @%#06x (%d)\n",
8906ccb1d8fSSangwon Jee offset, length);
8916ccb1d8fSSangwon Jee
8926ccb1d8fSSangwon Jee if (length > MIP4_BL_PAGE_SIZE || length % MIP4_BL_PACKET_SIZE) {
8936ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
8946ccb1d8fSSangwon Jee "Invalid page length: %d\n", length);
8956ccb1d8fSSangwon Jee return -EINVAL;
8966ccb1d8fSSangwon Jee }
8976ccb1d8fSSangwon Jee
8986ccb1d8fSSangwon Jee data_buf = kmalloc(2 + MIP4_BL_PACKET_SIZE, GFP_KERNEL);
8996ccb1d8fSSangwon Jee if (!data_buf)
9006ccb1d8fSSangwon Jee return -ENOMEM;
9016ccb1d8fSSangwon Jee
9026ccb1d8fSSangwon Jee /* Addr */
9036ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT;
9046ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_TARGET_ADDR;
9056ccb1d8fSSangwon Jee put_unaligned_le32(offset, &cmd[2]);
9066ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6);
9076ccb1d8fSSangwon Jee if (ret != 6) {
9086ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
9096ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
9106ccb1d8fSSangwon Jee "Failed to send write page address: %d\n", error);
9116ccb1d8fSSangwon Jee goto out;
9126ccb1d8fSSangwon Jee }
9136ccb1d8fSSangwon Jee
9146ccb1d8fSSangwon Jee /* Size */
9156ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT;
9166ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_SIZE;
9176ccb1d8fSSangwon Jee put_unaligned_le32(length, &cmd[2]);
9186ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6);
9196ccb1d8fSSangwon Jee if (ret != 6) {
9206ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
9216ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
9226ccb1d8fSSangwon Jee "Failed to send write page size: %d\n", error);
9236ccb1d8fSSangwon Jee goto out;
9246ccb1d8fSSangwon Jee }
9256ccb1d8fSSangwon Jee
9266ccb1d8fSSangwon Jee /* Data */
9276ccb1d8fSSangwon Jee for (buf_offset = 0;
9286ccb1d8fSSangwon Jee buf_offset < length;
9296ccb1d8fSSangwon Jee buf_offset += MIP4_BL_PACKET_SIZE) {
9306ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
9316ccb1d8fSSangwon Jee "writing chunk at %#04x (size %d)\n",
9326ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE);
9336ccb1d8fSSangwon Jee put_unaligned_be16(buf_addr + buf_offset, data_buf);
9346ccb1d8fSSangwon Jee memcpy(&data_buf[2], &data[buf_offset], MIP4_BL_PACKET_SIZE);
9356ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client,
9366ccb1d8fSSangwon Jee data_buf, 2 + MIP4_BL_PACKET_SIZE);
9376ccb1d8fSSangwon Jee if (ret != 2 + MIP4_BL_PACKET_SIZE) {
9386ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
9396ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
9406ccb1d8fSSangwon Jee "Failed to read chunk at %#04x (size %d): %d\n",
9416ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE, error);
9426ccb1d8fSSangwon Jee goto out;
9436ccb1d8fSSangwon Jee }
9446ccb1d8fSSangwon Jee }
9456ccb1d8fSSangwon Jee
9466ccb1d8fSSangwon Jee /* Command */
9476ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT;
9486ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_CMD;
9496ccb1d8fSSangwon Jee cmd[2] = MIP4_BOOT_CMD_PROGRAM;
9506ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 3);
9516ccb1d8fSSangwon Jee if (ret != 3) {
9526ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
9536ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
9546ccb1d8fSSangwon Jee "Failed to send 'write' command: %d\n", error);
9556ccb1d8fSSangwon Jee goto out;
9566ccb1d8fSSangwon Jee }
9576ccb1d8fSSangwon Jee
9586ccb1d8fSSangwon Jee /* Status */
9596ccb1d8fSSangwon Jee error = mip4_bl_read_status(ts);
9606ccb1d8fSSangwon Jee
9616ccb1d8fSSangwon Jee out:
9626ccb1d8fSSangwon Jee kfree(data_buf);
9636ccb1d8fSSangwon Jee return error ? error : 0;
9646ccb1d8fSSangwon Jee }
9656ccb1d8fSSangwon Jee
mip4_bl_verify_page(struct mip4_ts * ts,int offset,const u8 * data,int length,int buf_addr)9666ccb1d8fSSangwon Jee static int mip4_bl_verify_page(struct mip4_ts *ts, int offset,
9676ccb1d8fSSangwon Jee const u8 *data, int length, int buf_addr)
9686ccb1d8fSSangwon Jee {
9696ccb1d8fSSangwon Jee u8 cmd[8];
9706ccb1d8fSSangwon Jee u8 *read_buf;
9716ccb1d8fSSangwon Jee int buf_offset;
9726ccb1d8fSSangwon Jee struct i2c_msg msg[] = {
9736ccb1d8fSSangwon Jee {
9746ccb1d8fSSangwon Jee .addr = ts->client->addr,
9756ccb1d8fSSangwon Jee .flags = 0,
9766ccb1d8fSSangwon Jee .buf = cmd,
9776ccb1d8fSSangwon Jee .len = 2,
9786ccb1d8fSSangwon Jee }, {
9796ccb1d8fSSangwon Jee .addr = ts->client->addr,
9806ccb1d8fSSangwon Jee .flags = I2C_M_RD,
9816ccb1d8fSSangwon Jee .len = MIP4_BL_PACKET_SIZE,
9826ccb1d8fSSangwon Jee },
9836ccb1d8fSSangwon Jee };
9846ccb1d8fSSangwon Jee int ret;
9856ccb1d8fSSangwon Jee int error;
9866ccb1d8fSSangwon Jee
9876ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "Validating page @%#06x (%d)\n",
9886ccb1d8fSSangwon Jee offset, length);
9896ccb1d8fSSangwon Jee
9906ccb1d8fSSangwon Jee /* Addr */
9916ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT;
9926ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_TARGET_ADDR;
9936ccb1d8fSSangwon Jee put_unaligned_le32(offset, &cmd[2]);
9946ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6);
9956ccb1d8fSSangwon Jee if (ret != 6) {
9966ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
9976ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
9986ccb1d8fSSangwon Jee "Failed to send read page address: %d\n", error);
9996ccb1d8fSSangwon Jee return error;
10006ccb1d8fSSangwon Jee }
10016ccb1d8fSSangwon Jee
10026ccb1d8fSSangwon Jee /* Size */
10036ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT;
10046ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_SIZE;
10056ccb1d8fSSangwon Jee put_unaligned_le32(length, &cmd[2]);
10066ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6);
10076ccb1d8fSSangwon Jee if (ret != 6) {
10086ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
10096ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
10106ccb1d8fSSangwon Jee "Failed to send read page size: %d\n", error);
10116ccb1d8fSSangwon Jee return error;
10126ccb1d8fSSangwon Jee }
10136ccb1d8fSSangwon Jee
10146ccb1d8fSSangwon Jee /* Command */
10156ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT;
10166ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_CMD;
10176ccb1d8fSSangwon Jee cmd[2] = MIP4_BOOT_CMD_READ;
10186ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 3);
10196ccb1d8fSSangwon Jee if (ret != 3) {
10206ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
10216ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
10226ccb1d8fSSangwon Jee "Failed to send 'read' command: %d\n", error);
10236ccb1d8fSSangwon Jee return error;
10246ccb1d8fSSangwon Jee }
10256ccb1d8fSSangwon Jee
10266ccb1d8fSSangwon Jee /* Status */
10276ccb1d8fSSangwon Jee error = mip4_bl_read_status(ts);
10286ccb1d8fSSangwon Jee if (error)
10296ccb1d8fSSangwon Jee return error;
10306ccb1d8fSSangwon Jee
10316ccb1d8fSSangwon Jee /* Read */
10326ccb1d8fSSangwon Jee msg[1].buf = read_buf = kmalloc(MIP4_BL_PACKET_SIZE, GFP_KERNEL);
10336ccb1d8fSSangwon Jee if (!read_buf)
10346ccb1d8fSSangwon Jee return -ENOMEM;
10356ccb1d8fSSangwon Jee
10366ccb1d8fSSangwon Jee for (buf_offset = 0;
10376ccb1d8fSSangwon Jee buf_offset < length;
10386ccb1d8fSSangwon Jee buf_offset += MIP4_BL_PACKET_SIZE) {
10396ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
10406ccb1d8fSSangwon Jee "reading chunk at %#04x (size %d)\n",
10416ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE);
10426ccb1d8fSSangwon Jee put_unaligned_be16(buf_addr + buf_offset, cmd);
10436ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
10446ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) {
10456ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO;
10466ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
10476ccb1d8fSSangwon Jee "Failed to read chunk at %#04x (size %d): %d\n",
10486ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE, error);
10496ccb1d8fSSangwon Jee break;
10506ccb1d8fSSangwon Jee }
10516ccb1d8fSSangwon Jee
10526ccb1d8fSSangwon Jee if (memcmp(&data[buf_offset], read_buf, MIP4_BL_PACKET_SIZE)) {
10536ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
10546ccb1d8fSSangwon Jee "Failed to validate chunk at %#04x (size %d)\n",
10556ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE);
10566ccb1d8fSSangwon Jee #if MIP4_FW_UPDATE_DEBUG
10576ccb1d8fSSangwon Jee print_hex_dump(KERN_DEBUG,
10586ccb1d8fSSangwon Jee MIP4_DEVICE_NAME " F/W File: ",
10596ccb1d8fSSangwon Jee DUMP_PREFIX_OFFSET, 16, 1,
10606ccb1d8fSSangwon Jee data + offset, MIP4_BL_PACKET_SIZE,
10616ccb1d8fSSangwon Jee false);
10626ccb1d8fSSangwon Jee print_hex_dump(KERN_DEBUG,
10636ccb1d8fSSangwon Jee MIP4_DEVICE_NAME " F/W Chip: ",
10646ccb1d8fSSangwon Jee DUMP_PREFIX_OFFSET, 16, 1,
10656ccb1d8fSSangwon Jee read_buf, MIP4_BL_PAGE_SIZE, false);
10666ccb1d8fSSangwon Jee #endif
10676ccb1d8fSSangwon Jee error = -EINVAL;
10686ccb1d8fSSangwon Jee break;
10696ccb1d8fSSangwon Jee }
10706ccb1d8fSSangwon Jee }
10716ccb1d8fSSangwon Jee
10726ccb1d8fSSangwon Jee kfree(read_buf);
10736ccb1d8fSSangwon Jee return error ? error : 0;
10746ccb1d8fSSangwon Jee }
10756ccb1d8fSSangwon Jee
10766ccb1d8fSSangwon Jee /*
10776ccb1d8fSSangwon Jee * Flash chip firmware
10786ccb1d8fSSangwon Jee */
mip4_flash_fw(struct mip4_ts * ts,const u8 * fw_data,u32 fw_size,u32 fw_offset)10796ccb1d8fSSangwon Jee static int mip4_flash_fw(struct mip4_ts *ts,
10806ccb1d8fSSangwon Jee const u8 *fw_data, u32 fw_size, u32 fw_offset)
10816ccb1d8fSSangwon Jee {
10826ccb1d8fSSangwon Jee struct i2c_client *client = ts->client;
10836ccb1d8fSSangwon Jee int offset;
10846ccb1d8fSSangwon Jee u16 buf_addr;
10856ccb1d8fSSangwon Jee int error, error2;
10866ccb1d8fSSangwon Jee
10876ccb1d8fSSangwon Jee /* Enter bootloader mode */
10886ccb1d8fSSangwon Jee dev_dbg(&client->dev, "Entering bootloader mode\n");
10896ccb1d8fSSangwon Jee
10906ccb1d8fSSangwon Jee error = mip4_bl_enter(ts);
10916ccb1d8fSSangwon Jee if (error) {
10926ccb1d8fSSangwon Jee dev_err(&client->dev,
10936ccb1d8fSSangwon Jee "Failed to enter bootloader mode: %d\n",
10946ccb1d8fSSangwon Jee error);
10956ccb1d8fSSangwon Jee return error;
10966ccb1d8fSSangwon Jee }
10976ccb1d8fSSangwon Jee
10986ccb1d8fSSangwon Jee /* Read info */
10996ccb1d8fSSangwon Jee error = mip4_bl_get_address(ts, &buf_addr);
11006ccb1d8fSSangwon Jee if (error)
11016ccb1d8fSSangwon Jee goto exit_bl;
11026ccb1d8fSSangwon Jee
11036ccb1d8fSSangwon Jee /* Program & Verify */
11046ccb1d8fSSangwon Jee dev_dbg(&client->dev,
11056ccb1d8fSSangwon Jee "Program & Verify, page size: %d, packet size: %d\n",
11066ccb1d8fSSangwon Jee MIP4_BL_PAGE_SIZE, MIP4_BL_PACKET_SIZE);
11076ccb1d8fSSangwon Jee
11086ccb1d8fSSangwon Jee for (offset = fw_offset;
11096ccb1d8fSSangwon Jee offset < fw_offset + fw_size;
11106ccb1d8fSSangwon Jee offset += MIP4_BL_PAGE_SIZE) {
11116ccb1d8fSSangwon Jee /* Program */
11126ccb1d8fSSangwon Jee error = mip4_bl_program_page(ts, offset, fw_data + offset,
11136ccb1d8fSSangwon Jee MIP4_BL_PAGE_SIZE, buf_addr);
11146ccb1d8fSSangwon Jee if (error)
11156ccb1d8fSSangwon Jee break;
11166ccb1d8fSSangwon Jee
11176ccb1d8fSSangwon Jee /* Verify */
11186ccb1d8fSSangwon Jee error = mip4_bl_verify_page(ts, offset, fw_data + offset,
11196ccb1d8fSSangwon Jee MIP4_BL_PAGE_SIZE, buf_addr);
11206ccb1d8fSSangwon Jee if (error)
11216ccb1d8fSSangwon Jee break;
11226ccb1d8fSSangwon Jee }
11236ccb1d8fSSangwon Jee
11246ccb1d8fSSangwon Jee exit_bl:
11256ccb1d8fSSangwon Jee /* Exit bootloader mode */
11266ccb1d8fSSangwon Jee dev_dbg(&client->dev, "Exiting bootloader mode\n");
11276ccb1d8fSSangwon Jee
11286ccb1d8fSSangwon Jee error2 = mip4_bl_exit(ts);
11296ccb1d8fSSangwon Jee if (error2) {
11306ccb1d8fSSangwon Jee dev_err(&client->dev,
11316ccb1d8fSSangwon Jee "Failed to exit bootloader mode: %d\n", error2);
11326ccb1d8fSSangwon Jee if (!error)
11336ccb1d8fSSangwon Jee error = error2;
11346ccb1d8fSSangwon Jee }
11356ccb1d8fSSangwon Jee
11366ccb1d8fSSangwon Jee /* Reset chip */
11376ccb1d8fSSangwon Jee mip4_power_off(ts);
11386ccb1d8fSSangwon Jee mip4_power_on(ts);
11396ccb1d8fSSangwon Jee
11406ccb1d8fSSangwon Jee mip4_query_device(ts);
11416ccb1d8fSSangwon Jee
11426ccb1d8fSSangwon Jee /* Refresh device parameters */
11436ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, ts->max_x, 0, 0);
11446ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, ts->max_y, 0, 0);
11456ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_X, 0, ts->max_x, 0, 0);
11466ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_Y, 0, ts->max_y, 0, 0);
11477a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->ppm_x);
11487a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->ppm_y);
11497a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_X, ts->ppm_x);
11507a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_Y, ts->ppm_y);
11516ccb1d8fSSangwon Jee
11526ccb1d8fSSangwon Jee return error ? error : 0;
11536ccb1d8fSSangwon Jee }
11546ccb1d8fSSangwon Jee
mip4_parse_firmware(struct mip4_ts * ts,const struct firmware * fw,u32 * fw_offset_start,u32 * fw_size,const struct mip4_bin_tail ** pfw_info)11556ccb1d8fSSangwon Jee static int mip4_parse_firmware(struct mip4_ts *ts, const struct firmware *fw,
11566ccb1d8fSSangwon Jee u32 *fw_offset_start, u32 *fw_size,
11576ccb1d8fSSangwon Jee const struct mip4_bin_tail **pfw_info)
11586ccb1d8fSSangwon Jee {
11596ccb1d8fSSangwon Jee const struct mip4_bin_tail *fw_info;
11606ccb1d8fSSangwon Jee struct mip4_fw_version fw_version;
11616ccb1d8fSSangwon Jee u16 tail_size;
11626ccb1d8fSSangwon Jee
11636ccb1d8fSSangwon Jee if (fw->size < MIP4_BIN_TAIL_SIZE) {
11646ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
11656ccb1d8fSSangwon Jee "Invalid firmware, size mismatch (tail %zd vs %zd)\n",
11666ccb1d8fSSangwon Jee MIP4_BIN_TAIL_SIZE, fw->size);
11676ccb1d8fSSangwon Jee return -EINVAL;
11686ccb1d8fSSangwon Jee }
11696ccb1d8fSSangwon Jee
11706ccb1d8fSSangwon Jee fw_info = (const void *)&fw->data[fw->size - MIP4_BIN_TAIL_SIZE];
11716ccb1d8fSSangwon Jee
11726ccb1d8fSSangwon Jee #if MIP4_FW_UPDATE_DEBUG
11736ccb1d8fSSangwon Jee print_hex_dump(KERN_ERR, MIP4_DEVICE_NAME " Bin Info: ",
11746ccb1d8fSSangwon Jee DUMP_PREFIX_OFFSET, 16, 1, *fw_info, tail_size, false);
11756ccb1d8fSSangwon Jee #endif
11766ccb1d8fSSangwon Jee
11776ccb1d8fSSangwon Jee tail_size = get_unaligned_le16(&fw_info->tail_size);
11786ccb1d8fSSangwon Jee if (tail_size != MIP4_BIN_TAIL_SIZE) {
11796ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
11806ccb1d8fSSangwon Jee "wrong tail size: %d (expected %zd)\n",
11816ccb1d8fSSangwon Jee tail_size, MIP4_BIN_TAIL_SIZE);
11826ccb1d8fSSangwon Jee return -EINVAL;
11836ccb1d8fSSangwon Jee }
11846ccb1d8fSSangwon Jee
11856ccb1d8fSSangwon Jee /* Check bin format */
11866ccb1d8fSSangwon Jee if (memcmp(fw_info->tail_mark, MIP4_BIN_TAIL_MARK,
11876ccb1d8fSSangwon Jee sizeof(fw_info->tail_mark))) {
11886ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
11896ccb1d8fSSangwon Jee "unable to locate tail marker (%*ph vs %*ph)\n",
11906ccb1d8fSSangwon Jee (int)sizeof(fw_info->tail_mark), fw_info->tail_mark,
11916ccb1d8fSSangwon Jee (int)sizeof(fw_info->tail_mark), MIP4_BIN_TAIL_MARK);
11926ccb1d8fSSangwon Jee return -EINVAL;
11936ccb1d8fSSangwon Jee }
11946ccb1d8fSSangwon Jee
11956ccb1d8fSSangwon Jee *fw_offset_start = get_unaligned_le32(&fw_info->bin_start_addr);
11966ccb1d8fSSangwon Jee *fw_size = get_unaligned_le32(&fw_info->bin_length);
11976ccb1d8fSSangwon Jee
11986ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
11996ccb1d8fSSangwon Jee "F/W Data offset: %#08x, size: %d\n",
12006ccb1d8fSSangwon Jee *fw_offset_start, *fw_size);
12016ccb1d8fSSangwon Jee
12026ccb1d8fSSangwon Jee if (*fw_size % MIP4_BL_PAGE_SIZE) {
12036ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
12046ccb1d8fSSangwon Jee "encoded fw length %d is not multiple of pages (%d)\n",
12056ccb1d8fSSangwon Jee *fw_size, MIP4_BL_PAGE_SIZE);
12066ccb1d8fSSangwon Jee return -EINVAL;
12076ccb1d8fSSangwon Jee }
12086ccb1d8fSSangwon Jee
12096ccb1d8fSSangwon Jee if (fw->size != *fw_offset_start + *fw_size) {
12106ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
12116ccb1d8fSSangwon Jee "Wrong firmware size, expected %d bytes, got %zd\n",
12126ccb1d8fSSangwon Jee *fw_offset_start + *fw_size, fw->size);
12136ccb1d8fSSangwon Jee return -EINVAL;
12146ccb1d8fSSangwon Jee }
12156ccb1d8fSSangwon Jee
12166ccb1d8fSSangwon Jee mip4_parse_fw_version((const u8 *)&fw_info->ver_boot, &fw_version);
12176ccb1d8fSSangwon Jee
12186ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev,
12196ccb1d8fSSangwon Jee "F/W file version %04X %04X %04X %04X\n",
12206ccb1d8fSSangwon Jee fw_version.boot, fw_version.core,
12216ccb1d8fSSangwon Jee fw_version.app, fw_version.param);
12226ccb1d8fSSangwon Jee
12236ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W chip version: %04X %04X %04X %04X\n",
12246ccb1d8fSSangwon Jee ts->fw_version.boot, ts->fw_version.core,
12256ccb1d8fSSangwon Jee ts->fw_version.app, ts->fw_version.param);
12266ccb1d8fSSangwon Jee
12276ccb1d8fSSangwon Jee /* Check F/W type */
12286ccb1d8fSSangwon Jee if (fw_version.boot != 0xEEEE && fw_version.boot != 0xFFFF &&
12296ccb1d8fSSangwon Jee fw_version.core == 0xEEEE &&
12306ccb1d8fSSangwon Jee fw_version.app == 0xEEEE &&
12316ccb1d8fSSangwon Jee fw_version.param == 0xEEEE) {
12326ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W type: Bootloader\n");
12336ccb1d8fSSangwon Jee } else if (fw_version.boot == 0xEEEE &&
12346ccb1d8fSSangwon Jee fw_version.core != 0xEEEE && fw_version.core != 0xFFFF &&
12356ccb1d8fSSangwon Jee fw_version.app != 0xEEEE && fw_version.app != 0xFFFF &&
12366ccb1d8fSSangwon Jee fw_version.param != 0xEEEE && fw_version.param != 0xFFFF) {
12376ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W type: Main\n");
12386ccb1d8fSSangwon Jee } else {
12396ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Wrong firmware type\n");
12406ccb1d8fSSangwon Jee return -EINVAL;
12416ccb1d8fSSangwon Jee }
12426ccb1d8fSSangwon Jee
12436ccb1d8fSSangwon Jee return 0;
12446ccb1d8fSSangwon Jee }
12456ccb1d8fSSangwon Jee
mip4_execute_fw_update(struct mip4_ts * ts,const struct firmware * fw)12466ccb1d8fSSangwon Jee static int mip4_execute_fw_update(struct mip4_ts *ts, const struct firmware *fw)
12476ccb1d8fSSangwon Jee {
12486ccb1d8fSSangwon Jee const struct mip4_bin_tail *fw_info;
12496ccb1d8fSSangwon Jee u32 fw_start_offset;
12506ccb1d8fSSangwon Jee u32 fw_size;
12516ccb1d8fSSangwon Jee int retires = 3;
12526ccb1d8fSSangwon Jee int error;
12536ccb1d8fSSangwon Jee
12546ccb1d8fSSangwon Jee error = mip4_parse_firmware(ts, fw,
12556ccb1d8fSSangwon Jee &fw_start_offset, &fw_size, &fw_info);
12566ccb1d8fSSangwon Jee if (error)
12576ccb1d8fSSangwon Jee return error;
12586ccb1d8fSSangwon Jee
1259d69f0a43SAndrzej Pietrasiewicz if (input_device_enabled(ts->input)) {
12606ccb1d8fSSangwon Jee disable_irq(ts->client->irq);
12616ccb1d8fSSangwon Jee } else {
12626ccb1d8fSSangwon Jee error = mip4_power_on(ts);
12636ccb1d8fSSangwon Jee if (error)
12646ccb1d8fSSangwon Jee return error;
12656ccb1d8fSSangwon Jee }
12666ccb1d8fSSangwon Jee
12676ccb1d8fSSangwon Jee /* Update firmware */
12686ccb1d8fSSangwon Jee do {
12696ccb1d8fSSangwon Jee error = mip4_flash_fw(ts, fw->data, fw_size, fw_start_offset);
12706ccb1d8fSSangwon Jee if (!error)
12716ccb1d8fSSangwon Jee break;
12726ccb1d8fSSangwon Jee } while (--retires);
12736ccb1d8fSSangwon Jee
12746ccb1d8fSSangwon Jee if (error)
12756ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
12766ccb1d8fSSangwon Jee "Failed to flash firmware: %d\n", error);
12776ccb1d8fSSangwon Jee
12786ccb1d8fSSangwon Jee /* Enable IRQ */
1279d69f0a43SAndrzej Pietrasiewicz if (input_device_enabled(ts->input))
12806ccb1d8fSSangwon Jee enable_irq(ts->client->irq);
12816ccb1d8fSSangwon Jee else
12826ccb1d8fSSangwon Jee mip4_power_off(ts);
12836ccb1d8fSSangwon Jee
12846ccb1d8fSSangwon Jee return error ? error : 0;
12856ccb1d8fSSangwon Jee }
12866ccb1d8fSSangwon Jee
mip4_sysfs_fw_update(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)12876ccb1d8fSSangwon Jee static ssize_t mip4_sysfs_fw_update(struct device *dev,
12886ccb1d8fSSangwon Jee struct device_attribute *attr,
12896ccb1d8fSSangwon Jee const char *buf, size_t count)
12906ccb1d8fSSangwon Jee {
12916ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev);
12926ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
12936ccb1d8fSSangwon Jee const struct firmware *fw;
12946ccb1d8fSSangwon Jee int error;
12956ccb1d8fSSangwon Jee
1296c2c4ba82SSangwon Jee error = request_firmware(&fw, ts->fw_name, dev);
12976ccb1d8fSSangwon Jee if (error) {
12986ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
12996ccb1d8fSSangwon Jee "Failed to retrieve firmware %s: %d\n",
1300c2c4ba82SSangwon Jee ts->fw_name, error);
13016ccb1d8fSSangwon Jee return error;
13026ccb1d8fSSangwon Jee }
13036ccb1d8fSSangwon Jee
13046ccb1d8fSSangwon Jee /*
13056ccb1d8fSSangwon Jee * Take input mutex to prevent racing with itself and also with
13066ccb1d8fSSangwon Jee * userspace opening and closing the device and also suspend/resume
13076ccb1d8fSSangwon Jee * transitions.
13086ccb1d8fSSangwon Jee */
13096ccb1d8fSSangwon Jee mutex_lock(&ts->input->mutex);
13106ccb1d8fSSangwon Jee
13116ccb1d8fSSangwon Jee error = mip4_execute_fw_update(ts, fw);
13126ccb1d8fSSangwon Jee
13136ccb1d8fSSangwon Jee mutex_unlock(&ts->input->mutex);
13146ccb1d8fSSangwon Jee
13156ccb1d8fSSangwon Jee release_firmware(fw);
13166ccb1d8fSSangwon Jee
13176ccb1d8fSSangwon Jee if (error) {
13186ccb1d8fSSangwon Jee dev_err(&ts->client->dev,
13196ccb1d8fSSangwon Jee "Firmware update failed: %d\n", error);
13206ccb1d8fSSangwon Jee return error;
13216ccb1d8fSSangwon Jee }
13226ccb1d8fSSangwon Jee
13236ccb1d8fSSangwon Jee return count;
13246ccb1d8fSSangwon Jee }
13256ccb1d8fSSangwon Jee
13266ccb1d8fSSangwon Jee static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mip4_sysfs_fw_update);
13276ccb1d8fSSangwon Jee
mip4_sysfs_read_fw_version(struct device * dev,struct device_attribute * attr,char * buf)13286ccb1d8fSSangwon Jee static ssize_t mip4_sysfs_read_fw_version(struct device *dev,
13296ccb1d8fSSangwon Jee struct device_attribute *attr,
13306ccb1d8fSSangwon Jee char *buf)
13316ccb1d8fSSangwon Jee {
13326ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev);
13336ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
13346ccb1d8fSSangwon Jee size_t count;
13356ccb1d8fSSangwon Jee
13366ccb1d8fSSangwon Jee /* Take lock to prevent racing with firmware update */
13376ccb1d8fSSangwon Jee mutex_lock(&ts->input->mutex);
13386ccb1d8fSSangwon Jee
13396ccb1d8fSSangwon Jee count = snprintf(buf, PAGE_SIZE, "%04X %04X %04X %04X\n",
13406ccb1d8fSSangwon Jee ts->fw_version.boot, ts->fw_version.core,
13416ccb1d8fSSangwon Jee ts->fw_version.app, ts->fw_version.param);
13426ccb1d8fSSangwon Jee
13436ccb1d8fSSangwon Jee mutex_unlock(&ts->input->mutex);
13446ccb1d8fSSangwon Jee
13456ccb1d8fSSangwon Jee return count;
13466ccb1d8fSSangwon Jee }
13476ccb1d8fSSangwon Jee
13486ccb1d8fSSangwon Jee static DEVICE_ATTR(fw_version, S_IRUGO, mip4_sysfs_read_fw_version, NULL);
13496ccb1d8fSSangwon Jee
mip4_sysfs_read_hw_version(struct device * dev,struct device_attribute * attr,char * buf)13509aa40426SSangwon Jee static ssize_t mip4_sysfs_read_hw_version(struct device *dev,
13519aa40426SSangwon Jee struct device_attribute *attr,
13529aa40426SSangwon Jee char *buf)
13539aa40426SSangwon Jee {
13549aa40426SSangwon Jee struct i2c_client *client = to_i2c_client(dev);
13559aa40426SSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
13569aa40426SSangwon Jee size_t count;
13579aa40426SSangwon Jee
13589aa40426SSangwon Jee /* Take lock to prevent racing with firmware update */
13599aa40426SSangwon Jee mutex_lock(&ts->input->mutex);
13609aa40426SSangwon Jee
13619aa40426SSangwon Jee /*
13629aa40426SSangwon Jee * product_name shows the name or version of the hardware
13639aa40426SSangwon Jee * paired with current firmware in the chip.
13649aa40426SSangwon Jee */
13659aa40426SSangwon Jee count = snprintf(buf, PAGE_SIZE, "%.*s\n",
13669aa40426SSangwon Jee (int)sizeof(ts->product_name), ts->product_name);
13679aa40426SSangwon Jee
13689aa40426SSangwon Jee mutex_unlock(&ts->input->mutex);
13699aa40426SSangwon Jee
13709aa40426SSangwon Jee return count;
13719aa40426SSangwon Jee }
13729aa40426SSangwon Jee
13739aa40426SSangwon Jee static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL);
13749aa40426SSangwon Jee
mip4_sysfs_read_product_id(struct device * dev,struct device_attribute * attr,char * buf)1375e2aad666SSangwon Jee static ssize_t mip4_sysfs_read_product_id(struct device *dev,
1376e2aad666SSangwon Jee struct device_attribute *attr,
1377e2aad666SSangwon Jee char *buf)
1378e2aad666SSangwon Jee {
1379e2aad666SSangwon Jee struct i2c_client *client = to_i2c_client(dev);
1380e2aad666SSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
1381e2aad666SSangwon Jee size_t count;
1382e2aad666SSangwon Jee
1383e2aad666SSangwon Jee mutex_lock(&ts->input->mutex);
1384e2aad666SSangwon Jee
1385e2aad666SSangwon Jee count = snprintf(buf, PAGE_SIZE, "%04X\n", ts->product_id);
1386e2aad666SSangwon Jee
1387e2aad666SSangwon Jee mutex_unlock(&ts->input->mutex);
1388e2aad666SSangwon Jee
1389e2aad666SSangwon Jee return count;
1390e2aad666SSangwon Jee }
1391e2aad666SSangwon Jee
1392e2aad666SSangwon Jee static DEVICE_ATTR(product_id, S_IRUGO, mip4_sysfs_read_product_id, NULL);
1393e2aad666SSangwon Jee
mip4_sysfs_read_ic_name(struct device * dev,struct device_attribute * attr,char * buf)13944e1bff07SSangwon Jee static ssize_t mip4_sysfs_read_ic_name(struct device *dev,
13954e1bff07SSangwon Jee struct device_attribute *attr,
13964e1bff07SSangwon Jee char *buf)
13974e1bff07SSangwon Jee {
13984e1bff07SSangwon Jee struct i2c_client *client = to_i2c_client(dev);
13994e1bff07SSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
14004e1bff07SSangwon Jee size_t count;
14014e1bff07SSangwon Jee
14024e1bff07SSangwon Jee mutex_lock(&ts->input->mutex);
14034e1bff07SSangwon Jee
14044e1bff07SSangwon Jee count = snprintf(buf, PAGE_SIZE, "%.*s\n",
14054e1bff07SSangwon Jee (int)sizeof(ts->ic_name), ts->ic_name);
14064e1bff07SSangwon Jee
14074e1bff07SSangwon Jee mutex_unlock(&ts->input->mutex);
14084e1bff07SSangwon Jee
14094e1bff07SSangwon Jee return count;
14104e1bff07SSangwon Jee }
14114e1bff07SSangwon Jee
14124e1bff07SSangwon Jee static DEVICE_ATTR(ic_name, S_IRUGO, mip4_sysfs_read_ic_name, NULL);
14134e1bff07SSangwon Jee
14146ccb1d8fSSangwon Jee static struct attribute *mip4_attrs[] = {
14156ccb1d8fSSangwon Jee &dev_attr_fw_version.attr,
14169aa40426SSangwon Jee &dev_attr_hw_version.attr,
1417e2aad666SSangwon Jee &dev_attr_product_id.attr,
14184e1bff07SSangwon Jee &dev_attr_ic_name.attr,
14196ccb1d8fSSangwon Jee &dev_attr_update_fw.attr,
14206ccb1d8fSSangwon Jee NULL,
14216ccb1d8fSSangwon Jee };
14226ccb1d8fSSangwon Jee
14236ccb1d8fSSangwon Jee static const struct attribute_group mip4_attr_group = {
14246ccb1d8fSSangwon Jee .attrs = mip4_attrs,
14256ccb1d8fSSangwon Jee };
14266ccb1d8fSSangwon Jee
mip4_probe(struct i2c_client * client)14275a2b1cf3SUwe Kleine-König static int mip4_probe(struct i2c_client *client)
14286ccb1d8fSSangwon Jee {
14296ccb1d8fSSangwon Jee struct mip4_ts *ts;
14306ccb1d8fSSangwon Jee struct input_dev *input;
14316ccb1d8fSSangwon Jee int error;
14326ccb1d8fSSangwon Jee
14336ccb1d8fSSangwon Jee if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
14346ccb1d8fSSangwon Jee dev_err(&client->dev, "Not supported I2C adapter\n");
14356ccb1d8fSSangwon Jee return -ENXIO;
14366ccb1d8fSSangwon Jee }
14376ccb1d8fSSangwon Jee
14386ccb1d8fSSangwon Jee ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
14396ccb1d8fSSangwon Jee if (!ts)
14406ccb1d8fSSangwon Jee return -ENOMEM;
14416ccb1d8fSSangwon Jee
14426ccb1d8fSSangwon Jee input = devm_input_allocate_device(&client->dev);
14436ccb1d8fSSangwon Jee if (!input)
14446ccb1d8fSSangwon Jee return -ENOMEM;
14456ccb1d8fSSangwon Jee
14466ccb1d8fSSangwon Jee ts->client = client;
14476ccb1d8fSSangwon Jee ts->input = input;
14486ccb1d8fSSangwon Jee
14496ccb1d8fSSangwon Jee snprintf(ts->phys, sizeof(ts->phys),
14506ccb1d8fSSangwon Jee "%s/input0", dev_name(&client->dev));
14516ccb1d8fSSangwon Jee
14526ccb1d8fSSangwon Jee ts->gpio_ce = devm_gpiod_get_optional(&client->dev,
14536ccb1d8fSSangwon Jee "ce", GPIOD_OUT_LOW);
1454*10ba628eSKrzysztof Kozlowski if (IS_ERR(ts->gpio_ce))
1455*10ba628eSKrzysztof Kozlowski return dev_err_probe(&client->dev, PTR_ERR(ts->gpio_ce), "Failed to get gpio\n");
14566ccb1d8fSSangwon Jee
14576ccb1d8fSSangwon Jee error = mip4_power_on(ts);
14586ccb1d8fSSangwon Jee if (error)
14596ccb1d8fSSangwon Jee return error;
14606ccb1d8fSSangwon Jee error = mip4_query_device(ts);
14616ccb1d8fSSangwon Jee mip4_power_off(ts);
14626ccb1d8fSSangwon Jee if (error)
14636ccb1d8fSSangwon Jee return error;
14646ccb1d8fSSangwon Jee
14656ccb1d8fSSangwon Jee input->name = "MELFAS MIP4 Touchscreen";
14666ccb1d8fSSangwon Jee input->phys = ts->phys;
14676ccb1d8fSSangwon Jee
14686ccb1d8fSSangwon Jee input->id.bustype = BUS_I2C;
14696ccb1d8fSSangwon Jee input->id.vendor = 0x13c5;
1470c3fc6089SSangwon Jee input->id.product = ts->product_id;
14716ccb1d8fSSangwon Jee
14726ccb1d8fSSangwon Jee input->open = mip4_input_open;
14736ccb1d8fSSangwon Jee input->close = mip4_input_close;
14746ccb1d8fSSangwon Jee
14756ccb1d8fSSangwon Jee input_set_drvdata(input, ts);
14766ccb1d8fSSangwon Jee
14776ccb1d8fSSangwon Jee input->keycode = ts->key_code;
14786ccb1d8fSSangwon Jee input->keycodesize = sizeof(*ts->key_code);
14796ccb1d8fSSangwon Jee input->keycodemax = ts->key_num;
14806ccb1d8fSSangwon Jee
1481210f8cabSJungHoon Hyun input_set_abs_params(input, ABS_MT_TOOL_TYPE, 0, MT_TOOL_PALM, 0, 0);
14826ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_POSITION_X, 0, ts->max_x, 0, 0);
14836ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ts->max_y, 0, 0);
14846ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_PRESSURE,
14856ccb1d8fSSangwon Jee MIP4_PRESSURE_MIN, MIP4_PRESSURE_MAX, 0, 0);
14866ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_TOUCH_MAJOR,
14876ccb1d8fSSangwon Jee MIP4_TOUCH_MAJOR_MIN, MIP4_TOUCH_MAJOR_MAX, 0, 0);
14886ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_TOUCH_MINOR,
14896ccb1d8fSSangwon Jee MIP4_TOUCH_MINOR_MIN, MIP4_TOUCH_MINOR_MAX, 0, 0);
14907a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->ppm_x);
14917a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->ppm_y);
14926ccb1d8fSSangwon Jee
14936ccb1d8fSSangwon Jee error = input_mt_init_slots(input, MIP4_MAX_FINGERS, INPUT_MT_DIRECT);
14946ccb1d8fSSangwon Jee if (error)
14956ccb1d8fSSangwon Jee return error;
14966ccb1d8fSSangwon Jee
14976ccb1d8fSSangwon Jee i2c_set_clientdata(client, ts);
14986ccb1d8fSSangwon Jee
14996ccb1d8fSSangwon Jee error = devm_request_threaded_irq(&client->dev, client->irq,
15006ccb1d8fSSangwon Jee NULL, mip4_interrupt,
1501bcd9730aSBarry Song IRQF_ONESHOT | IRQF_NO_AUTOEN,
1502bcd9730aSBarry Song MIP4_DEVICE_NAME, ts);
15036ccb1d8fSSangwon Jee if (error) {
15046ccb1d8fSSangwon Jee dev_err(&client->dev,
15056ccb1d8fSSangwon Jee "Failed to request interrupt %d: %d\n",
15066ccb1d8fSSangwon Jee client->irq, error);
15076ccb1d8fSSangwon Jee return error;
15086ccb1d8fSSangwon Jee }
15096ccb1d8fSSangwon Jee
15106ccb1d8fSSangwon Jee error = input_register_device(input);
15116ccb1d8fSSangwon Jee if (error) {
15126ccb1d8fSSangwon Jee dev_err(&client->dev,
15136ccb1d8fSSangwon Jee "Failed to register input device: %d\n", error);
15146ccb1d8fSSangwon Jee return error;
15156ccb1d8fSSangwon Jee }
15166ccb1d8fSSangwon Jee
15174c16f82eSAndi Shyti error = devm_device_add_group(&client->dev, &mip4_attr_group);
15186ccb1d8fSSangwon Jee if (error) {
15196ccb1d8fSSangwon Jee dev_err(&client->dev,
15206ccb1d8fSSangwon Jee "Failed to create sysfs attribute group: %d\n", error);
15216ccb1d8fSSangwon Jee return error;
15226ccb1d8fSSangwon Jee }
15236ccb1d8fSSangwon Jee
15246ccb1d8fSSangwon Jee return 0;
15256ccb1d8fSSangwon Jee }
15266ccb1d8fSSangwon Jee
mip4_suspend(struct device * dev)1527e6a80bceSJonathan Cameron static int mip4_suspend(struct device *dev)
15286ccb1d8fSSangwon Jee {
15296ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev);
15306ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
15316ccb1d8fSSangwon Jee struct input_dev *input = ts->input;
15326ccb1d8fSSangwon Jee
15336ccb1d8fSSangwon Jee mutex_lock(&input->mutex);
15346ccb1d8fSSangwon Jee
15356ccb1d8fSSangwon Jee if (device_may_wakeup(dev))
15366ccb1d8fSSangwon Jee ts->wake_irq_enabled = enable_irq_wake(client->irq) == 0;
1537d69f0a43SAndrzej Pietrasiewicz else if (input_device_enabled(input))
15386ccb1d8fSSangwon Jee mip4_disable(ts);
15396ccb1d8fSSangwon Jee
15406ccb1d8fSSangwon Jee mutex_unlock(&input->mutex);
15416ccb1d8fSSangwon Jee
15426ccb1d8fSSangwon Jee return 0;
15436ccb1d8fSSangwon Jee }
15446ccb1d8fSSangwon Jee
mip4_resume(struct device * dev)1545e6a80bceSJonathan Cameron static int mip4_resume(struct device *dev)
15466ccb1d8fSSangwon Jee {
15476ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev);
15486ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client);
15496ccb1d8fSSangwon Jee struct input_dev *input = ts->input;
15506ccb1d8fSSangwon Jee
15516ccb1d8fSSangwon Jee mutex_lock(&input->mutex);
15526ccb1d8fSSangwon Jee
15536ccb1d8fSSangwon Jee if (ts->wake_irq_enabled)
15546ccb1d8fSSangwon Jee disable_irq_wake(client->irq);
1555d69f0a43SAndrzej Pietrasiewicz else if (input_device_enabled(input))
15566ccb1d8fSSangwon Jee mip4_enable(ts);
15576ccb1d8fSSangwon Jee
15586ccb1d8fSSangwon Jee mutex_unlock(&input->mutex);
15596ccb1d8fSSangwon Jee
15606ccb1d8fSSangwon Jee return 0;
15616ccb1d8fSSangwon Jee }
15626ccb1d8fSSangwon Jee
1563e6a80bceSJonathan Cameron static DEFINE_SIMPLE_DEV_PM_OPS(mip4_pm_ops, mip4_suspend, mip4_resume);
15646ccb1d8fSSangwon Jee
15656ccb1d8fSSangwon Jee #ifdef CONFIG_OF
15666ccb1d8fSSangwon Jee static const struct of_device_id mip4_of_match[] = {
15676ccb1d8fSSangwon Jee { .compatible = "melfas,"MIP4_DEVICE_NAME, },
15686ccb1d8fSSangwon Jee { },
15696ccb1d8fSSangwon Jee };
15706ccb1d8fSSangwon Jee MODULE_DEVICE_TABLE(of, mip4_of_match);
15716ccb1d8fSSangwon Jee #endif
15726ccb1d8fSSangwon Jee
15736ccb1d8fSSangwon Jee #ifdef CONFIG_ACPI
15746ccb1d8fSSangwon Jee static const struct acpi_device_id mip4_acpi_match[] = {
15756ccb1d8fSSangwon Jee { "MLFS0000", 0},
15766ccb1d8fSSangwon Jee { },
15776ccb1d8fSSangwon Jee };
15786ccb1d8fSSangwon Jee MODULE_DEVICE_TABLE(acpi, mip4_acpi_match);
15796ccb1d8fSSangwon Jee #endif
15806ccb1d8fSSangwon Jee
15816ccb1d8fSSangwon Jee static const struct i2c_device_id mip4_i2c_ids[] = {
15826ccb1d8fSSangwon Jee { MIP4_DEVICE_NAME, 0 },
15836ccb1d8fSSangwon Jee { },
15846ccb1d8fSSangwon Jee };
15856ccb1d8fSSangwon Jee MODULE_DEVICE_TABLE(i2c, mip4_i2c_ids);
15866ccb1d8fSSangwon Jee
15876ccb1d8fSSangwon Jee static struct i2c_driver mip4_driver = {
15886ccb1d8fSSangwon Jee .id_table = mip4_i2c_ids,
1589d8bde56dSUwe Kleine-König .probe = mip4_probe,
15906ccb1d8fSSangwon Jee .driver = {
15916ccb1d8fSSangwon Jee .name = MIP4_DEVICE_NAME,
15926ccb1d8fSSangwon Jee .of_match_table = of_match_ptr(mip4_of_match),
15936ccb1d8fSSangwon Jee .acpi_match_table = ACPI_PTR(mip4_acpi_match),
1594e6a80bceSJonathan Cameron .pm = pm_sleep_ptr(&mip4_pm_ops),
15956ccb1d8fSSangwon Jee },
15966ccb1d8fSSangwon Jee };
15976ccb1d8fSSangwon Jee module_i2c_driver(mip4_driver);
15986ccb1d8fSSangwon Jee
15996ccb1d8fSSangwon Jee MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen");
16006ccb1d8fSSangwon Jee MODULE_AUTHOR("Sangwon Jee <jeesw@melfas.com>");
16016ccb1d8fSSangwon Jee MODULE_LICENSE("GPL");
1602