new file mode 100644
@@ -0,0 +1,42 @@
+* HiDeep Finger and Stylus touchscreen controller
+
+Required properties:
+- compatible : must be "hideep,hideep-ts"
+- reg : I2C slave address, (e.g. 0x6C).
+- interrupt-parent : Interrupt controller to which the chip is connected.
+- interrupts : Interrupt to which the chip is connected.
+
+Optional properties:
+- vdd-supply : It is the controller supply for controlling
+ main voltage(3.3V) through the regulator.
+- vid-supply : It is the controller supply for controlling
+ IO voltage(1.8V) through the regulator.
+- reset-gpios : Define for reset gpio pin.
+ It is to use for reset IC.
+- touchscreen-size-x : X axis size of touchscreen
+- touchscreen-size-y : Y axis size of touchscreen
+- linux,keycodes : Specifies an array of numeric keycode values to
+ be used for reporting button presses. The array can
+ contain up to 3 entries.
+
+Example:
+
+#include "dt-bindings/input/input.h"
+
+i2c@00000000 {
+
+ /* ... */
+
+ touchscreen@6c {
+ compatible = "hideep,hideep-ts";
+ reg = <0x6c>;
+ interrupt-parent = <&gpx1>;
+ interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
+ vdd-supply = <&ldo15_reg>";
+ vid-supply = <&ldo18_reg>;
+ reset-gpios = <&gpx1 5 0>;
+ touchscreen-size-x = <1080>;
+ touchscreen-size-y = <1920>;
+ linux,keycodes = <KEY_HOME>, <KEY_MENU>, <KEY_BACK>;
+ };
+};
@@ -134,6 +134,7 @@ gw Gateworks Corporation
hannstar HannStar Display Corporation
haoyu Haoyu Microelectronic Co. Ltd.
hardkernel Hardkernel Co., Ltd
+hideep HiDeep Inc.
himax Himax Technologies, Inc.
hisilicon Hisilicon Limited.
hit Hitachi Ltd.
@@ -344,6 +344,17 @@ config TOUCHSCREEN_GOODIX
To compile this driver as a module, choose M here: the
module will be called goodix.
+config TOUCHSCREEN_HIDEEP
+ tristate "HiDeep Touch IC"
+ depends on I2C
+ help
+ Say Y here if you have a touchscreen using HiDeep.
+
+ If unsure, say N.
+
+ To compile this driver as a moudle, choose M here : the
+ module will be called hideep_ts.
+
config TOUCHSCREEN_ILI210X
tristate "Ilitek ILI210X based touchscreen"
depends on I2C
@@ -39,6 +39,7 @@ obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o
obj-$(CONFIG_TOUCHSCREEN_EGALAX_SERIAL) += egalax_ts_serial.o
obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o
obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix.o
+obj-$(CONFIG_TOUCHSCREEN_HIDEEP) += hideep.o
obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o
obj-$(CONFIG_TOUCHSCREEN_IMX6UL_TSC) += imx6ul_tsc.o
obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o
new file mode 100644
@@ -0,0 +1,1176 @@
+/*
+ * Copyright (C) 2012-2017 Hideep, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foudation.
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
+#include <linux/i2c.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/regulator/consumer.h>
+#include <asm/unaligned.h>
+
+#define HIDEEP_TS_NAME "HiDeep Touchscreen"
+#define HIDEEP_I2C_NAME "hideep_ts"
+
+#define HIDEEP_MT_MAX 10
+#define HIDEEP_KEY_MAX 3
+/* count(2) + touch data(100) + key data(6) */
+#define HIDEEP_MAX_EVENT 108
+#define HIDEEP_TOUCH_EVENT_INDEX 2
+#define HIDEEP_KEY_EVENT_INDEX 102
+
+/* Touch & key event */
+#define HIDEEP_EVENT_ADDR 0x240
+
+/* command list */
+#define HIDEEP_RESET_CMD 0x9800
+
+/* event bit */
+#define HIDEEP_MT_RELEASED BIT(4)
+#define HIDEEP_KEY_PRESSED BIT(7)
+#define HIDEEP_KEY_FIRST_PRESSED BIT(8)
+#define HIDEEP_KEY_PRESSED_MASK \
+ (HIDEEP_KEY_PRESSED | HIDEEP_KEY_FIRST_PRESSED)
+
+/* For NVM */
+#define HIDEEP_YRAM_BASE 0x40000000
+#define HIDEEP_PERIPHERAL_BASE 0x50000000
+#define HIDEEP_ESI_BASE \
+ (HIDEEP_PERIPHERAL_BASE + 0x00000000)
+#define HIDEEP_FLASH_BASE \
+ (HIDEEP_PERIPHERAL_BASE + 0x01000000)
+#define HIDEEP_SYSCON_BASE \
+ (HIDEEP_PERIPHERAL_BASE + 0x02000000)
+
+#define HIDEEP_SYSCON_MOD_CON (HIDEEP_SYSCON_BASE + 0x0000)
+#define HIDEEP_SYSCON_SPC_CON (HIDEEP_SYSCON_BASE + 0x0004)
+#define HIDEEP_SYSCON_CLK_CON (HIDEEP_SYSCON_BASE + 0x0008)
+#define HIDEEP_SYSCON_CLK_ENA (HIDEEP_SYSCON_BASE + 0x000C)
+#define HIDEEP_SYSCON_RST_CON (HIDEEP_SYSCON_BASE + 0x0010)
+#define HIDEEP_SYSCON_WDT_CON (HIDEEP_SYSCON_BASE + 0x0014)
+#define HIDEEP_SYSCON_WDT_CNT (HIDEEP_SYSCON_BASE + 0x0018)
+#define HIDEEP_SYSCON_PWR_CON (HIDEEP_SYSCON_BASE + 0x0020)
+#define HIDEEP_SYSCON_PGM_ID (HIDEEP_SYSCON_BASE + 0x00F4)
+
+#define HIDEEP_FLASH_CON (HIDEEP_FLASH_BASE + 0x0000)
+#define HIDEEP_FLASH_STA (HIDEEP_FLASH_BASE + 0x0004)
+#define HIDEEP_FLASH_CFG (HIDEEP_FLASH_BASE + 0x0008)
+#define HIDEEP_FLASH_TIM (HIDEEP_FLASH_BASE + 0x000C)
+#define HIDEEP_FLASH_CACHE_CFG (HIDEEP_FLASH_BASE + 0x0010)
+#define HIDEEP_FLASH_PIO_SIG (HIDEEP_FLASH_BASE + 0x400000)
+
+#define HIDEEP_ESI_TX_INVALID (HIDEEP_ESI_BASE + 0x0008)
+
+#define HIDEEP_PERASE 0x00040000
+#define HIDEEP_WRONLY 0x00100000
+
+#define HIDEEP_NVM_MASK_OFS 0x0000000C
+#define HIDEEP_NVM_DEFAULT_PAGE 0
+#define HIDEEP_NVM_SFR_WPAGE 1
+#define HIDEEP_NVM_SFR_RPAGE 2
+
+#define HIDEEP_PIO_SIG 0x00400000
+#define HIDEEP_PROT_MODE 0x03400000
+
+#define HIDEEP_NVM_PAGE_SIZE 128
+
+#define HIDEEP_DWZ_INFO 0x000002C0
+
+struct hideep_event {
+ __le16 x;
+ __le16 y;
+ __le16 z;
+ u8 w;
+ u8 flag;
+ u8 type;
+ u8 index;
+} __packed;
+
+struct dwz_info {
+ __le32 code_start;
+ u8 code_crc[12];
+
+ __le32 c_code_start;
+ __le16 c_code_len;
+ __le16 gen_ver;
+
+ __le32 vr_start;
+ __le16 vr_len;
+ __le16 rsv0;
+
+ __le32 ft_start;
+ __le16 ft_len;
+ __le16 vr_version;
+
+ __le16 boot_ver;
+ __le16 core_ver;
+ __le16 custom_ver;
+ __le16 release_ver;
+
+ u8 factory_id;
+ u8 panel_type;
+ u8 model_name[6];
+ __le16 product_code;
+ __le16 extra_option;
+
+ __le16 product_id;
+ __le16 vendor_id;
+} __packed;
+
+struct hideep_ts {
+ struct i2c_client *client;
+ struct input_dev *input_dev;
+ struct regmap *reg;
+
+ struct touchscreen_properties prop;
+
+ struct gpio_desc *reset_gpio;
+
+ struct regulator *vcc_vdd;
+ struct regulator *vcc_vid;
+
+ struct mutex dev_mutex;
+
+ u32 tch_count;
+ u32 key_count;
+ u32 lpm_count;
+
+ u8 touch_event[HIDEEP_MT_MAX * 10];
+ u8 key_event[HIDEEP_KEY_MAX * 2];
+
+ int key_num;
+ int key_codes[HIDEEP_KEY_MAX];
+
+ struct dwz_info dwz_info;
+
+ int fw_size;
+ int nvm_mask;
+};
+
+struct pgm_packet {
+ union {
+ u8 b[8];
+ u32 w[2];
+ } header;
+
+ u32 payload[HIDEEP_NVM_PAGE_SIZE / sizeof(u32)];
+};
+
+static int hideep_pgm_w_mem(struct hideep_ts *ts, u32 addr,
+ struct pgm_packet *packet, u32 len)
+{
+ int ret;
+ int i;
+ struct i2c_msg msg;
+
+ if ((len % sizeof(u32)) != 0)
+ return -EINVAL;
+
+ put_unaligned_be32((0x80 | (len / sizeof(u32) - 1)),
+ &packet->header.w[0]);
+ put_unaligned_be32(addr, &packet->header.w[1]);
+
+ for (i = 0; i < len / sizeof(u32); i++)
+ put_unaligned_be32(packet->payload[i], &packet->payload[i]);
+
+ msg.addr = ts->client->addr;
+ msg.flags = 0;
+ msg.len = len + 5;
+ msg.buf = &packet->header.b[3];
+
+ ret = i2c_transfer(ts->client->adapter, &msg, 1);
+
+ return ret;
+}
+
+static int hideep_pgm_r_mem(struct hideep_ts *ts, u32 addr,
+ struct pgm_packet *packet, u32 len)
+{
+ int ret;
+ int i;
+ u8 *buff;
+ struct i2c_msg msg[2];
+
+ if ((len % sizeof(u32)) != 0)
+ return -EINVAL;
+
+ buff = kmalloc(len, GFP_KERNEL);
+
+ if (!buff)
+ return -ENOMEM;
+
+ put_unaligned_be32((0x00 | (len / sizeof(u32) - 1)),
+ &packet->header.w[0]);
+ put_unaligned_be32(addr, &packet->header.w[1]);
+
+ msg[0].addr = ts->client->addr;
+ msg[0].flags = 0;
+ msg[0].len = 5;
+ msg[0].buf = &packet->header.b[3];
+
+ msg[1].addr = ts->client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].len = len;
+ msg[1].buf = buff;
+
+ ret = i2c_transfer(ts->client->adapter, msg, 2);
+
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < len / sizeof(u32); i++)
+ packet->payload[i] = get_unaligned_be32(&buff[i * sizeof(u32)]);
+
+ return ret;
+}
+
+static int hideep_pgm_r_reg(struct hideep_ts *ts, u32 addr,
+ u32 *val)
+{
+ int ret;
+ struct pgm_packet packet;
+
+ put_unaligned_be32(0x00, &packet.header.w[0]);
+ put_unaligned_be32(addr, &packet.header.w[1]);
+
+ ret = hideep_pgm_r_mem(ts, addr, &packet, sizeof(u32));
+
+ if (ret < 0)
+ return ret;
+
+ *val = packet.payload[0];
+
+ return ret;
+}
+
+static int hideep_pgm_w_reg(struct hideep_ts *ts, u32 addr,
+ u32 data)
+{
+ int ret;
+ struct pgm_packet packet;
+
+ put_unaligned_be32(0x80, &packet.header.w[0]);
+ put_unaligned_be32(addr, &packet.header.w[1]);
+ packet.payload[0] = data;
+
+ ret = hideep_pgm_w_mem(ts, addr, &packet, sizeof(u32));
+
+ return ret;
+}
+
+#define SW_RESET_IN_PGM(CLK) \
+{ \
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CNT, CLK); \
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x03); \
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x01); \
+}
+
+#define SET_FLASH_PIO(CE) \
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CON, 0x01 | (CE << 1))
+#define SET_PIO_SIG(X, Y) \
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_PIO_SIG + X, Y)
+#define SET_FLASH_HWCONTROL() \
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CON, 0x00)
+
+#define NVM_W_SFR(x, y) \
+{ \
+ SET_FLASH_PIO(1); \
+ SET_PIO_SIG(x, y); \
+ SET_FLASH_PIO(0); \
+}
+
+static void hideep_pgm_set(struct hideep_ts *ts)
+{
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x00);
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_SPC_CON, 0x00);
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_CLK_ENA, 0xFF);
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_CLK_CON, 0x01);
+ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_PWR_CON, 0x01);
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_TIM, 0x03);
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CACHE_CFG, 0x00);
+}
+
+static int hideep_pgm_get_pattern(struct hideep_ts *ts)
+{
+ int ret;
+ u32 status;
+ u16 p1 = 0xAF39;
+ u16 p2 = 0xDF9D;
+
+ ret = regmap_bulk_write(ts->reg, p1, (void *)&p2, 1);
+
+ if (ret < 0) {
+ dev_err(&ts->client->dev, "%d, %08X", __LINE__, ret);
+ return ret;
+ }
+
+ mdelay(1);
+
+ /* flush invalid Tx load register */
+ ret = hideep_pgm_w_reg(ts, HIDEEP_ESI_TX_INVALID, 0x01);
+
+ if (ret < 0)
+ return ret;
+
+ ret = hideep_pgm_r_reg(ts, HIDEEP_SYSCON_PGM_ID, &status);
+
+ if (ret < 0)
+ return ret;
+
+ return status;
+}
+
+static int hideep_enter_pgm(struct hideep_ts *ts)
+{
+ int retry_count = 10;
+ int val;
+ u32 pgm_pattern = 0xDF9DAF39;
+
+ while (retry_count--) {
+ val = hideep_pgm_get_pattern(ts);
+
+ if (pgm_pattern != get_unaligned_be32(&val)) {
+ dev_err(&ts->client->dev, "enter_pgm : error(%08x):",
+ get_unaligned_be32(&val));
+ } else {
+ dev_dbg(&ts->client->dev, "found magic code");
+ break;
+ }
+ }
+
+ if (retry_count < 0) {
+ dev_err(&ts->client->dev, "couldn't enter pgm mode!!!");
+ SW_RESET_IN_PGM(1000);
+ return -EBADMSG;
+ }
+
+ hideep_pgm_set(ts);
+ mdelay(1);
+
+ return 0;
+}
+
+static void hideep_nvm_unlock(struct hideep_ts *ts)
+{
+ u32 unmask_code = 0;
+
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG,
+ HIDEEP_NVM_SFR_RPAGE);
+
+ hideep_pgm_r_reg(ts, 0x0000000C, &unmask_code);
+
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG,
+ HIDEEP_NVM_DEFAULT_PAGE);
+
+ /* make it unprotected code */
+ unmask_code &= (~HIDEEP_PROT_MODE);
+
+ /* compare unmask code */
+ if (unmask_code != ts->nvm_mask)
+ dev_dbg(&ts->client->dev, "read mask code different 0x%x",
+ unmask_code);
+
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG,
+ HIDEEP_NVM_SFR_WPAGE);
+ SET_FLASH_PIO(0);
+
+ NVM_W_SFR(HIDEEP_NVM_MASK_OFS, ts->nvm_mask);
+ SET_FLASH_HWCONTROL();
+ hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG,
+ HIDEEP_NVM_DEFAULT_PAGE);
+}
+
+static int hideep_check_status(struct hideep_ts *ts)
+{
+ int ret, status;
+ int time_out = 100;
+
+ while (time_out--) {
+ mdelay(1);
+ ret = hideep_pgm_r_reg(ts, HIDEEP_FLASH_STA,
+ &status);
+
+ if (ret < 0)
+ continue;
+
+ if (status)
+ return status;
+ }
+
+ return time_out;
+}
+
+static int hideep_program_page(struct hideep_ts *ts,
+ u32 addr, struct pgm_packet *packet_w)
+{
+ int ret;
+
+
+ ret = hideep_check_status(ts);
+
+ if (ret < 0)
+ return -EBUSY;
+
+ addr = addr & ~(HIDEEP_NVM_PAGE_SIZE - 1);
+
+ SET_FLASH_PIO(0);
+ SET_FLASH_PIO(1);
+
+ /* erase page */
+ SET_PIO_SIG((HIDEEP_PERASE | addr), 0xFFFFFFFF);
+
+ SET_FLASH_PIO(0);
+
+ ret = hideep_check_status(ts);
+
+ if (ret < 0)
+ return -EBUSY;
+
+ /* write page */
+ SET_FLASH_PIO(1);
+
+ SET_PIO_SIG((HIDEEP_WRONLY | addr),
+ get_unaligned_be32(&packet_w->payload[0]));
+
+ hideep_pgm_w_mem(ts, (HIDEEP_FLASH_PIO_SIG | HIDEEP_WRONLY),
+ packet_w, HIDEEP_NVM_PAGE_SIZE);
+
+ SET_PIO_SIG(124, get_unaligned_be32(&packet_w->payload[31]));
+
+ SET_FLASH_PIO(0);
+
+ mdelay(1);
+
+ ret = hideep_check_status(ts);
+
+ if (ret < 0)
+ return -EBUSY;
+
+ SET_FLASH_HWCONTROL();
+
+ return 0;
+}
+
+static void hideep_program_nvm(struct hideep_ts *ts, const u8 *ucode,
+ int len)
+{
+ struct pgm_packet packet_w;
+ struct pgm_packet packet_r;
+ int i;
+ int ret;
+ int addr = 0;
+ int len_r = len;
+ int len_w = HIDEEP_NVM_PAGE_SIZE;
+ u32 pages = DIV_ROUND_UP(len, HIDEEP_NVM_PAGE_SIZE);
+
+
+ hideep_nvm_unlock(ts);
+
+ dev_dbg(&ts->client->dev, "pages : %d", pages);
+
+ for (i = 0; i < pages; i++) {
+ if (len_r < HIDEEP_NVM_PAGE_SIZE)
+ len_w = len_r;
+
+ /* compare */
+ hideep_pgm_r_mem(ts, 0x00000000 + addr, &packet_r,
+ HIDEEP_NVM_PAGE_SIZE);
+ ret = memcmp(&ucode[addr], packet_r.payload, len_w);
+
+ if (ret) {
+ /* write page */
+ memcpy(packet_w.payload, &ucode[addr], len_w);
+ ret = hideep_program_page(ts, addr, &packet_w);
+ if (ret)
+ dev_err(&ts->client->dev,
+ "%s : error(%08x):",
+ __func__, addr);
+ mdelay(1);
+ }
+
+ addr += HIDEEP_NVM_PAGE_SIZE;
+ len_r -= HIDEEP_NVM_PAGE_SIZE;
+ if (len_r < 0)
+ break;
+ }
+}
+
+static int hideep_verify_nvm(struct hideep_ts *ts, const u8 *ucode,
+ int len)
+{
+ struct pgm_packet packet_r;
+ int i, j;
+ int ret;
+ int addr = 0;
+ int len_r = len;
+ int len_v = HIDEEP_NVM_PAGE_SIZE;
+ u32 pages = DIV_ROUND_UP(len, HIDEEP_NVM_PAGE_SIZE);
+
+ for (i = 0; i < pages; i++) {
+ if (len_r < HIDEEP_NVM_PAGE_SIZE)
+ len_v = len_r;
+
+ hideep_pgm_r_mem(ts, 0x00000000 + addr, &packet_r,
+ HIDEEP_NVM_PAGE_SIZE);
+
+ ret = memcmp(&ucode[addr], packet_r.payload, len_v);
+
+ if (ret) {
+ u8 *read = (u8 *)packet_r.payload;
+
+ for (j = 0; j < HIDEEP_NVM_PAGE_SIZE; j++) {
+ if (ucode[addr + j] != read[j])
+ dev_err(&ts->client->dev,
+ "verify : error([%d] %02x : %02x)",
+ addr + j, ucode[addr + j],
+ read[j]);
+ }
+ return ret;
+ }
+
+ addr += HIDEEP_NVM_PAGE_SIZE;
+ len_r -= HIDEEP_NVM_PAGE_SIZE;
+ if (len_r < 0)
+ break;
+ }
+
+ return 0;
+}
+
+static int hideep_update_firmware(struct hideep_ts *ts, const char *fn)
+{
+ int ret;
+ int retry, retry_cnt = 3;
+ const struct firmware *fw_entry;
+
+ dev_dbg(&ts->client->dev, "enter");
+ ret = request_firmware(&fw_entry, fn, &ts->client->dev);
+
+ if (ret != 0) {
+ dev_err(&ts->client->dev, "request_firmware : fail(%d)", ret);
+ return ret;
+ }
+
+ if (fw_entry->size > ts->fw_size) {
+ dev_err(&ts->client->dev,
+ "file size(%zu) is big more than fw memory size(%d)",
+ fw_entry->size, ts->fw_size);
+ release_firmware(fw_entry);
+ return -EFBIG;
+ }
+
+ /* chip specific code for flash fuse */
+ mutex_lock(&ts->dev_mutex);
+
+ /* enter program mode */
+ ret = hideep_enter_pgm(ts);
+
+ if (ret)
+ return ret;
+
+ /* comparing & programming each page, if the memory of specified
+ * page is exactly same, no need to update.
+ */
+ for (retry = 0; retry < retry_cnt; retry++) {
+ hideep_program_nvm(ts, fw_entry->data, fw_entry->size);
+
+ ret = hideep_verify_nvm(ts, fw_entry->data, fw_entry->size);
+ if (!ret)
+ break;
+ }
+
+ if (retry < retry_cnt)
+ dev_dbg(&ts->client->dev, "update success!!!");
+ else
+ dev_err(&ts->client->dev, "update failed!!!");
+
+ SW_RESET_IN_PGM(1000);
+
+ mutex_unlock(&ts->dev_mutex);
+
+ release_firmware(fw_entry);
+
+ return ret;
+}
+
+static int hideep_load_dwz(struct hideep_ts *ts)
+{
+ int ret = 0;
+ struct pgm_packet packet_r;
+
+ ret = hideep_enter_pgm(ts);
+
+ if (ret)
+ return ret;
+
+ mdelay(50);
+
+ hideep_pgm_r_mem(ts, HIDEEP_DWZ_INFO, &packet_r,
+ sizeof(struct dwz_info));
+
+ memcpy(&ts->dwz_info, packet_r.payload,
+ sizeof(struct dwz_info));
+
+ SW_RESET_IN_PGM(10);
+
+ if (get_unaligned_le16(&ts->dwz_info.product_code) & 0x60) {
+ /* Lime fw size */
+ dev_dbg(&ts->client->dev, "used lime IC");
+ ts->fw_size = 1024 * 64;
+ ts->nvm_mask = 0x0030027B;
+ } else if (get_unaligned_le16(&ts->dwz_info.product_code) & 0x40) {
+ /* Crimson IC */
+ dev_dbg(&ts->client->dev, "used crimson IC");
+ ts->fw_size = 1024 * 48;
+ ts->nvm_mask = 0x00310000;
+ } else {
+ dev_dbg(&ts->client->dev, "product code is wrong!!!");
+ return -EINVAL;
+ }
+
+ dev_dbg(&ts->client->dev, "firmware release version : %04x",
+ get_unaligned_le16(&ts->dwz_info.release_ver));
+
+ mdelay(50);
+
+ return 0;
+}
+
+static int hideep_pwr_on(struct hideep_ts *ts)
+{
+ int ret = 0;
+ u8 cmd = 0x01;
+
+ if (ts->vcc_vdd) {
+ ret = regulator_enable(ts->vcc_vdd);
+ if (ret)
+ dev_err(&ts->client->dev,
+ "Regulator vdd enable failed ret=%d", ret);
+ usleep_range(999, 1000);
+ }
+
+ if (ts->vcc_vid) {
+ ret = regulator_enable(ts->vcc_vid);
+ if (ret)
+ dev_err(&ts->client->dev,
+ "Regulator vcc_vid enable failed ret=%d", ret);
+ usleep_range(2999, 3000);
+ }
+
+ mdelay(30);
+
+ if (ts->reset_gpio)
+ gpiod_set_raw_value(ts->reset_gpio, 1);
+ else
+ regmap_write(ts->reg, HIDEEP_RESET_CMD, cmd);
+
+ mdelay(50);
+
+ return ret;
+}
+
+static void hideep_pwr_off(void *data)
+{
+ struct hideep_ts *ts = data;
+
+ if (ts->reset_gpio)
+ gpiod_set_value(ts->reset_gpio, 0);
+
+ if (ts->vcc_vid)
+ regulator_disable(ts->vcc_vid);
+
+ if (ts->vcc_vdd)
+ regulator_disable(ts->vcc_vdd);
+}
+
+#define __GET_MT_TOOL_TYPE(X) ((X == 0x01) ? MT_TOOL_FINGER : MT_TOOL_PEN)
+
+static void push_mt(struct hideep_ts *ts)
+{
+ int id;
+ int i;
+ int btn_up = 0;
+ int evt = 0;
+ int offset = sizeof(struct hideep_event);
+ struct hideep_event *event;
+
+ /* load multi-touch event to input system */
+ for (i = 0; i < ts->tch_count; i++) {
+ event = (struct hideep_event *)&ts->touch_event[i * offset];
+ id = event->index & 0x0F;
+ btn_up = event->flag & HIDEEP_MT_RELEASED;
+
+ dev_dbg(&ts->client->dev,
+ "type = %d, id = %d, i = %d, x = %d, y = %d, z = %d",
+ event->type, event->index, i,
+ get_unaligned_le16(&event->x),
+ get_unaligned_le16(&event->y),
+ get_unaligned_le16(&event->z));
+
+ input_mt_slot(ts->input_dev, id);
+ input_mt_report_slot_state(ts->input_dev,
+ __GET_MT_TOOL_TYPE(event->type),
+ (btn_up == 0));
+
+ if (btn_up == 0) {
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X,
+ get_unaligned_le16(&event->x));
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y,
+ get_unaligned_le16(&event->y));
+ input_report_abs(ts->input_dev, ABS_MT_PRESSURE,
+ get_unaligned_le16(&event->z));
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,
+ event->w);
+ evt++;
+ }
+ }
+
+ input_mt_sync_frame(ts->input_dev);
+}
+
+static void push_ky(struct hideep_ts *ts)
+{
+ int i;
+ int status;
+ int code;
+
+ for (i = 0; i < ts->key_count; i++) {
+ code = ts->key_event[i * 2] & 0x0F;
+ status = ts->key_event[i * 2] & 0xF0;
+
+ input_report_key(ts->input_dev, ts->key_codes[code],
+ status & HIDEEP_KEY_PRESSED_MASK);
+ }
+}
+
+static void hideep_put_event(struct hideep_ts *ts)
+{
+ /* mangling touch information */
+ if (ts->tch_count > 0)
+ push_mt(ts);
+
+ if (ts->key_count > 0)
+ push_ky(ts);
+
+ input_sync(ts->input_dev);
+}
+
+static int hideep_parse_event(struct hideep_ts *ts, u8 *data)
+{
+ int touch_count;
+
+ ts->tch_count = data[0];
+ ts->key_count = data[1] & 0x0f;
+ ts->lpm_count = data[1] & 0xf0;
+
+ /* get touch event count */
+ dev_dbg(&ts->client->dev, "mt = %d, key = %d, lpm = %02x",
+ ts->tch_count, ts->key_count, ts->lpm_count);
+
+ /* get touch event information */
+ if (ts->tch_count < HIDEEP_MT_MAX)
+ memcpy(ts->touch_event, &data[HIDEEP_TOUCH_EVENT_INDEX],
+ HIDEEP_MT_MAX * sizeof(struct hideep_event));
+ else
+ ts->tch_count = 0;
+
+ if (ts->key_count < HIDEEP_KEY_MAX)
+ memcpy(ts->key_event, &data[HIDEEP_KEY_EVENT_INDEX],
+ HIDEEP_KEY_MAX * 2);
+ else
+ ts->key_count = 0;
+
+ touch_count = ts->tch_count + ts->key_count;
+
+ return touch_count;
+}
+
+static irqreturn_t hideep_irq_task(int irq, void *handle)
+{
+ u8 buff[HIDEEP_MAX_EVENT];
+ int ret;
+
+ struct hideep_ts *ts = handle;
+
+ ret = regmap_bulk_read(ts->reg, HIDEEP_EVENT_ADDR,
+ buff, HIDEEP_MAX_EVENT / 2);
+
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ ret = hideep_parse_event(ts, buff);
+
+ if (ret > 0)
+ hideep_put_event(ts);
+
+ return IRQ_HANDLED;
+}
+
+static void hideep_get_axis_info(struct hideep_ts *ts)
+{
+ int ret;
+ u8 val[4];
+
+ if (ts->prop.max_x == 0 || ts->prop.max_y == 0) {
+ ret = regmap_bulk_read(ts->reg, 0x28, val, 2);
+
+ if (ret < 0) {
+ ts->prop.max_x = -1;
+ ts->prop.max_y = -1;
+ } else {
+ ts->prop.max_x =
+ get_unaligned_le16(&val[0]);
+ ts->prop.max_y =
+ get_unaligned_le16(&val[2]);
+ }
+ }
+
+ dev_dbg(&ts->client->dev, "X : %d, Y : %d",
+ ts->prop.max_x, ts->prop.max_y);
+}
+
+static int hideep_capability(struct hideep_ts *ts)
+{
+ int ret, i;
+
+ hideep_get_axis_info(ts);
+
+ if (ts->prop.max_x < 0 || ts->prop.max_y < 0)
+ return -EINVAL;
+
+ ts->input_dev->name = HIDEEP_TS_NAME;
+ ts->input_dev->id.bustype = BUS_I2C;
+
+ if (ts->key_num) {
+ ts->input_dev->keycode = ts->key_codes;
+ ts->input_dev->keycodesize = sizeof(ts->key_codes[0]);
+ ts->input_dev->keycodemax = ts->key_num;
+ for (i = 0; i < ts->key_num; i++)
+ input_set_capability(ts->input_dev, EV_KEY,
+ ts->key_codes[i]);
+ }
+
+ input_set_abs_params(ts->input_dev,
+ ABS_MT_TOOL_TYPE, 0, MT_TOOL_MAX, 0, 0);
+ input_set_abs_params(ts->input_dev,
+ ABS_MT_POSITION_X, 0, ts->prop.max_x, 0, 0);
+ input_set_abs_params(ts->input_dev,
+ ABS_MT_POSITION_Y, 0, ts->prop.max_y, 0, 0);
+ input_set_abs_params(ts->input_dev,
+ ABS_MT_PRESSURE, 0, 65535, 0, 0);
+ input_set_abs_params(ts->input_dev,
+ ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+
+ ret = input_mt_init_slots(ts->input_dev,
+ HIDEEP_MT_MAX, INPUT_MT_DIRECT);
+
+ return ret;
+}
+
+static ssize_t hideep_update_fw(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct hideep_ts *ts = dev_get_drvdata(dev);
+ int mode, ret;
+ char *fw_name;
+
+ ret = kstrtoint(buf, 8, &mode);
+ if (ret)
+ return ret;
+
+ disable_irq(ts->client->irq);
+
+ fw_name = kasprintf(GFP_KERNEL, "hideep_ts_%04x.bin",
+ get_unaligned_le16(&ts->dwz_info.product_id));
+ ret = hideep_update_firmware(ts, fw_name);
+
+ if (ret != 0)
+ dev_err(dev, "The firmware update failed(%d)", ret);
+
+ kfree(fw_name);
+
+ ret = hideep_load_dwz(ts);
+
+ if (ret < 0)
+ dev_err(&ts->client->dev, "fail to load dwz, ret = 0x%x", ret);
+
+ enable_irq(ts->client->irq);
+
+ return count;
+}
+
+static ssize_t hideep_fw_version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int len = 0;
+ struct hideep_ts *ts = dev_get_drvdata(dev);
+
+ mutex_lock(&ts->dev_mutex);
+ len = scnprintf(buf, PAGE_SIZE,
+ "%04x\n", get_unaligned_le16(&ts->dwz_info.release_ver));
+ mutex_unlock(&ts->dev_mutex);
+
+ return len;
+}
+
+static ssize_t hideep_product_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int len = 0;
+ struct hideep_ts *ts = dev_get_drvdata(dev);
+
+ mutex_lock(&ts->dev_mutex);
+ len = scnprintf(buf, PAGE_SIZE,
+ "%04x\n", get_unaligned_le16(&ts->dwz_info.product_id));
+ mutex_unlock(&ts->dev_mutex);
+
+ return len;
+}
+
+static DEVICE_ATTR(version, 0664, hideep_fw_version_show, NULL);
+static DEVICE_ATTR(product_id, 0664, hideep_product_id_show, NULL);
+static DEVICE_ATTR(update_fw, 0664, NULL, hideep_update_fw);
+
+static struct attribute *hideep_ts_sysfs_entries[] = {
+ &dev_attr_version.attr,
+ &dev_attr_product_id.attr,
+ &dev_attr_update_fw.attr,
+ NULL,
+};
+
+static struct attribute_group hideep_ts_attr_group = {
+ .attrs = hideep_ts_sysfs_entries,
+};
+
+static int __maybe_unused hideep_resume(struct device *dev)
+{
+ struct hideep_ts *ts = dev_get_drvdata(dev);
+ int ret;
+
+ ret = hideep_pwr_on(ts);
+ if (ret < 0)
+ dev_err(&ts->client->dev, "power on failed");
+ else
+ enable_irq(ts->client->irq);
+
+ return ret;
+}
+
+static int __maybe_unused hideep_suspend(struct device *dev)
+{
+ struct hideep_ts *ts = dev_get_drvdata(dev);
+
+ disable_irq(ts->client->irq);
+ hideep_pwr_off(ts);
+
+ return 0;
+}
+
+static int hideep_parse_dts(struct device *dev, struct hideep_ts *ts)
+{
+ int ret;
+
+ ts->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(ts->reset_gpio))
+ return PTR_ERR(ts->reset_gpio);
+
+ ts->vcc_vdd = devm_regulator_get(dev, "vdd");
+ if (IS_ERR(ts->vcc_vdd))
+ return PTR_ERR(ts->vcc_vdd);
+
+ ts->vcc_vid = devm_regulator_get(dev, "vid");
+ if (IS_ERR(ts->vcc_vid))
+ return PTR_ERR(ts->vcc_vid);
+
+ ts->key_num = device_property_read_u32_array(dev, "linux,keycodes",
+ NULL, 0);
+
+ if (ts->key_num > HIDEEP_KEY_MAX) {
+ dev_err(dev, "too many support key defined(%d)!!!",
+ ts->key_num);
+ return -EINVAL;
+ }
+
+ ret = device_property_read_u32_array(dev, "linux,keycodes",
+ ts->key_codes, ts->key_num);
+ if (ret) {
+ dev_dbg(dev, "don't support touch key");
+ ts->key_num = 0;
+ }
+
+ return 0;
+}
+
+const struct regmap_config hideep_regmap_config = {
+ .reg_bits = 16,
+ .reg_format_endian = REGMAP_ENDIAN_LITTLE,
+ .val_bits = 16,
+ .val_format_endian = REGMAP_ENDIAN_LITTLE,
+ .max_register = 0xffff,
+};
+
+static int hideep_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int ret;
+ struct regmap *regmap;
+ struct hideep_ts *ts;
+
+ /* check i2c bus */
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_I2C)) {
+ dev_err(&client->dev, "check i2c device error");
+ return -ENODEV;
+ }
+
+ regmap = devm_regmap_init_i2c(client, &hideep_regmap_config);
+
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "don't init regmap");
+ return PTR_ERR(regmap);
+ }
+
+ /* init hideep_ts */
+ ts = devm_kzalloc(&client->dev,
+ sizeof(*ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
+
+ ret = hideep_parse_dts(&client->dev, ts);
+
+ if (ret)
+ return ret;
+
+ ts->client = client;
+ ts->reg = regmap;
+
+ i2c_set_clientdata(client, ts);
+
+ mutex_init(&ts->dev_mutex);
+
+ /* power on */
+ ret = hideep_pwr_on(ts);
+ if (ret) {
+ dev_err(&ts->client->dev, "power on failed");
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(&ts->client->dev, hideep_pwr_off, ts);
+ if (ret) {
+ hideep_pwr_off(ts);
+ return ret;
+ }
+
+ mdelay(30);
+
+ /* read info */
+ ret = hideep_load_dwz(ts);
+ if (ret < 0) {
+ dev_err(&client->dev, "fail to load dwz, ret = 0x%x", ret);
+ return ret;
+ }
+
+ /* init input device */
+ ts->input_dev = devm_input_allocate_device(&client->dev);
+ if (!ts->input_dev) {
+ dev_err(&client->dev, "can't allocate memory for input_dev");
+ return -ENOMEM;
+ }
+
+ touchscreen_parse_properties(ts->input_dev, true, &ts->prop);
+
+ ret = hideep_capability(ts);
+ if (ret) {
+ dev_err(&client->dev, "can't init input properties");
+ return ret;
+ }
+
+ ret = input_register_device(ts->input_dev);
+ if (ret) {
+ dev_err(&client->dev, "can't register input_dev");
+ return ret;
+ }
+
+ input_set_drvdata(ts->input_dev, ts);
+
+ dev_info(&ts->client->dev, "ts irq: %d", ts->client->irq);
+ if (client->irq <= 0) {
+ dev_err(&client->dev, "can't be assigned irq");
+ return -EINVAL;
+ }
+
+ ret = devm_request_threaded_irq(&client->dev, ts->client->irq,
+ NULL, hideep_irq_task, IRQF_ONESHOT,
+ ts->client->name, ts);
+
+ if (ret < 0) {
+ dev_err(&client->dev, "fail to get irq, ret = 0x%08x",
+ ret);
+ return ret;
+ }
+
+ ret = devm_device_add_group(&client->dev, &hideep_ts_attr_group);
+
+ if (ret) {
+ dev_err(&client->dev, "fail init sys, ret = 0x%x", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(hideep_pm_ops, hideep_suspend, hideep_resume);
+
+static const struct i2c_device_id hideep_dev_idtable[] = {
+ { HIDEEP_I2C_NAME, 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, hideep_dev_idtable);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id hideep_acpi_id[] = {
+ { "HIDP0001", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, hideep_acpi_id);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id hideep_match_table[] = {
+ { .compatible = "hideep,hideep-ts" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, hideep_match_table);
+#endif
+
+static struct i2c_driver hideep_driver = {
+ .probe = hideep_probe,
+ .id_table = hideep_dev_idtable,
+ .driver = {
+ .name = HIDEEP_I2C_NAME,
+ .of_match_table = of_match_ptr(hideep_match_table),
+ .acpi_match_table = ACPI_PTR(hideep_acpi_id),
+ .pm = &hideep_pm_ops,
+ },
+};
+
+module_i2c_driver(hideep_driver);
+
+MODULE_DESCRIPTION("Driver for HiDeep Touchscreen Controller");
+MODULE_AUTHOR("anthony.kim@hideep.com");
+MODULE_LICENSE("GPL v2");