Re: [PATCH] Input: add support for HiDeep touchscreen

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Hi, Dmitry

Always thank you for your comment.
I resent patch file modified about your comment. Please confirm it.
Incidentally, Our IC use 40bit register address I2C protocol format at
flash mode. 40 bit means just 5 byte buffers.
( address data address is as below )
------------------------------------------------------------
| 8bit                                   | 32bit                   |
------------------------------------------------------------
| R/W flag and data length | register address |
------------------------------------------------------------
But I wasn't find method for use 40 bit register address at regmap, so
I couldn't implement to use regmap at flash mode.
(I tried to use expanding bit, It was fail that couldn't set value in
expanding bit.)
So I only used regmap for normal mode I2C.
If I must used regmap at all of transaction, please give to advice how
to use 40 bit register address at regmap.

Thank you.
Anthony.

2017-09-26 12:28 GMT+09:00 Anthony Kim <anthony.kim@xxxxxxxxxx>:
> The HiDeep touchscreen device is a capacitive multi-touch controller
> mainly for multi-touch supported devices use. It use I2C interface for
> communication to IC and provide axis X, Y, Z locations for ten finger
> touch through input event interface to userspace.
>
> It support the Crimson and the Lime two type IC. They are different
> the number of channel supported and FW size. But the working protocol
> is same.
>
> Signed-off-by: Anthony Kim <anthony.kim@xxxxxxxxxx>
> ---
>  .../bindings/input/touchscreen/hideep.txt          |   42 +
>  .../devicetree/bindings/vendor-prefixes.txt        |    1 +
>
> Acked-by: Rob Herring <robh+dt@xxxxxxxxxx>
>
>  drivers/input/touchscreen/Kconfig                  |   11 +
>  drivers/input/touchscreen/Makefile                 |    1 +
>  drivers/input/touchscreen/hideep.c                 | 1176 ++++++++++++++++++++
>  5 files changed, 1231 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/hideep.txt
>  create mode 100644 drivers/input/touchscreen/hideep.c
>
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/hideep.txt b/Documentation/devicetree/bindings/input/touchscreen/hideep.txt
> new file mode 100644
> index 0000000..121d9b7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/hideep.txt
> @@ -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>;
> +       };
> +};
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index daf465be..9913a03 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -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.
> diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
> index 64b30fe..d0c8dafc 100644
> --- a/drivers/input/touchscreen/Kconfig
> +++ b/drivers/input/touchscreen/Kconfig
> @@ -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
> diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
> index 6badce8..873b67e 100644
> --- a/drivers/input/touchscreen/Makefile
> +++ b/drivers/input/touchscreen/Makefile
> @@ -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
> diff --git a/drivers/input/touchscreen/hideep.c b/drivers/input/touchscreen/hideep.c
> new file mode 100644
> index 0000000..186cc30
> --- /dev/null
> +++ b/drivers/input/touchscreen/hideep.c
> @@ -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@xxxxxxxxxx");
> +MODULE_LICENSE("GPL v2");
> --
> 2.7.4
>
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