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![Anthony Kim](/assets/img/avatar_default.png)
gpiod_() API requires including "linux/gpio/consumer.h". Also, we are not using the legacy API nor the static board files descriptions, so no need to include gpio.h nor gpio/machine.h. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Anthony Kim <anthony.kim@hideep.com> Patchwork-Id: 10094831 Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
1119 lines
25 KiB
C
1119 lines
25 KiB
C
/*
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* Copyright (C) 2012-2017 Hideep, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2
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* as published by the Free Software Foudation.
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*/
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/firmware.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/acpi.h>
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#include <linux/interrupt.h>
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#include <linux/regmap.h>
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#include <linux/sysfs.h>
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#include <linux/input.h>
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#include <linux/input/mt.h>
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#include <linux/input/touchscreen.h>
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#include <linux/regulator/consumer.h>
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#include <asm/unaligned.h>
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#define HIDEEP_TS_NAME "HiDeep Touchscreen"
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#define HIDEEP_I2C_NAME "hideep_ts"
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#define HIDEEP_MT_MAX 10
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#define HIDEEP_KEY_MAX 3
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/* count(2) + touch data(100) + key data(6) */
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#define HIDEEP_MAX_EVENT 108UL
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#define HIDEEP_TOUCH_EVENT_INDEX 2
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#define HIDEEP_KEY_EVENT_INDEX 102
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/* Touch & key event */
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#define HIDEEP_EVENT_ADDR 0x240
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/* command list */
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#define HIDEEP_RESET_CMD 0x9800
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/* event bit */
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#define HIDEEP_MT_RELEASED BIT(4)
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#define HIDEEP_KEY_PRESSED BIT(7)
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#define HIDEEP_KEY_FIRST_PRESSED BIT(8)
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#define HIDEEP_KEY_PRESSED_MASK (HIDEEP_KEY_PRESSED | \
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HIDEEP_KEY_FIRST_PRESSED)
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#define HIDEEP_KEY_IDX_MASK 0x0f
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/* For NVM */
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#define HIDEEP_YRAM_BASE 0x40000000
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#define HIDEEP_PERIPHERAL_BASE 0x50000000
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#define HIDEEP_ESI_BASE (HIDEEP_PERIPHERAL_BASE + 0x00000000)
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#define HIDEEP_FLASH_BASE (HIDEEP_PERIPHERAL_BASE + 0x01000000)
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#define HIDEEP_SYSCON_BASE (HIDEEP_PERIPHERAL_BASE + 0x02000000)
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#define HIDEEP_SYSCON_MOD_CON (HIDEEP_SYSCON_BASE + 0x0000)
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#define HIDEEP_SYSCON_SPC_CON (HIDEEP_SYSCON_BASE + 0x0004)
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#define HIDEEP_SYSCON_CLK_CON (HIDEEP_SYSCON_BASE + 0x0008)
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#define HIDEEP_SYSCON_CLK_ENA (HIDEEP_SYSCON_BASE + 0x000C)
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#define HIDEEP_SYSCON_RST_CON (HIDEEP_SYSCON_BASE + 0x0010)
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#define HIDEEP_SYSCON_WDT_CON (HIDEEP_SYSCON_BASE + 0x0014)
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#define HIDEEP_SYSCON_WDT_CNT (HIDEEP_SYSCON_BASE + 0x0018)
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#define HIDEEP_SYSCON_PWR_CON (HIDEEP_SYSCON_BASE + 0x0020)
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#define HIDEEP_SYSCON_PGM_ID (HIDEEP_SYSCON_BASE + 0x00F4)
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#define HIDEEP_FLASH_CON (HIDEEP_FLASH_BASE + 0x0000)
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#define HIDEEP_FLASH_STA (HIDEEP_FLASH_BASE + 0x0004)
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#define HIDEEP_FLASH_CFG (HIDEEP_FLASH_BASE + 0x0008)
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#define HIDEEP_FLASH_TIM (HIDEEP_FLASH_BASE + 0x000C)
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#define HIDEEP_FLASH_CACHE_CFG (HIDEEP_FLASH_BASE + 0x0010)
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#define HIDEEP_FLASH_PIO_SIG (HIDEEP_FLASH_BASE + 0x400000)
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#define HIDEEP_ESI_TX_INVALID (HIDEEP_ESI_BASE + 0x0008)
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#define HIDEEP_PERASE 0x00040000
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#define HIDEEP_WRONLY 0x00100000
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#define HIDEEP_NVM_MASK_OFS 0x0000000C
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#define HIDEEP_NVM_DEFAULT_PAGE 0
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#define HIDEEP_NVM_SFR_WPAGE 1
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#define HIDEEP_NVM_SFR_RPAGE 2
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#define HIDEEP_PIO_SIG 0x00400000
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#define HIDEEP_PROT_MODE 0x03400000
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#define HIDEEP_NVM_PAGE_SIZE 128
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#define HIDEEP_DWZ_INFO 0x000002C0
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struct hideep_event {
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__le16 x;
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__le16 y;
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__le16 z;
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u8 w;
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u8 flag;
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u8 type;
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u8 index;
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};
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struct dwz_info {
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__be32 code_start;
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u8 code_crc[12];
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__be32 c_code_start;
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__be16 gen_ver;
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__be16 c_code_len;
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__be32 vr_start;
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__be16 rsv0;
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__be16 vr_len;
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__be32 ft_start;
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__be16 vr_version;
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__be16 ft_len;
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__be16 core_ver;
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__be16 boot_ver;
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__be16 release_ver;
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__be16 custom_ver;
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u8 factory_id;
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u8 panel_type;
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u8 model_name[6];
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__be16 extra_option;
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__be16 product_code;
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__be16 vendor_id;
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__be16 product_id;
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};
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struct pgm_packet {
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struct {
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u8 unused[3];
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u8 len;
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__be32 addr;
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} header;
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__be32 payload[HIDEEP_NVM_PAGE_SIZE / sizeof(__be32)];
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};
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#define HIDEEP_XFER_BUF_SIZE sizeof(struct pgm_packet)
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struct hideep_ts {
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struct i2c_client *client;
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struct input_dev *input_dev;
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struct regmap *reg;
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struct touchscreen_properties prop;
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struct gpio_desc *reset_gpio;
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struct regulator *vcc_vdd;
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struct regulator *vcc_vid;
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struct mutex dev_mutex;
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u32 tch_count;
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u32 lpm_count;
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/*
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* Data buffer to read packet from the device (contacts and key
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* states). We align it on double-word boundary to keep word-sized
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* fields in contact data and double-word-sized fields in program
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* packet aligned.
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*/
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u8 xfer_buf[HIDEEP_XFER_BUF_SIZE] __aligned(4);
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int key_num;
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u32 key_codes[HIDEEP_KEY_MAX];
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struct dwz_info dwz_info;
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unsigned int fw_size;
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u32 nvm_mask;
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};
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static int hideep_pgm_w_mem(struct hideep_ts *ts, u32 addr,
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const __be32 *data, size_t count)
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{
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struct pgm_packet *packet = (void *)ts->xfer_buf;
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size_t len = count * sizeof(*data);
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struct i2c_msg msg = {
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.addr = ts->client->addr,
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.len = len + sizeof(packet->header.len) +
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sizeof(packet->header.addr),
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.buf = &packet->header.len,
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};
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int ret;
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if (len > HIDEEP_NVM_PAGE_SIZE)
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return -EINVAL;
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packet->header.len = 0x80 | (count - 1);
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packet->header.addr = cpu_to_be32(addr);
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memcpy(packet->payload, data, len);
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ret = i2c_transfer(ts->client->adapter, &msg, 1);
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if (ret != 1)
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return ret < 0 ? ret : -EIO;
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return 0;
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}
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static int hideep_pgm_r_mem(struct hideep_ts *ts, u32 addr,
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__be32 *data, size_t count)
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{
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struct pgm_packet *packet = (void *)ts->xfer_buf;
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size_t len = count * sizeof(*data);
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struct i2c_msg msg[] = {
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{
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.addr = ts->client->addr,
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.len = sizeof(packet->header.len) +
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sizeof(packet->header.addr),
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.buf = &packet->header.len,
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},
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{
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.addr = ts->client->addr,
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.flags = I2C_M_RD,
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.len = len,
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.buf = (u8 *)data,
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},
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};
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int ret;
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if (len > HIDEEP_NVM_PAGE_SIZE)
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return -EINVAL;
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packet->header.len = count - 1;
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packet->header.addr = cpu_to_be32(addr);
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ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));
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if (ret != ARRAY_SIZE(msg))
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return ret < 0 ? ret : -EIO;
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return 0;
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}
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static int hideep_pgm_r_reg(struct hideep_ts *ts, u32 addr, u32 *val)
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{
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__be32 data;
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int error;
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error = hideep_pgm_r_mem(ts, addr, &data, 1);
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if (error) {
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dev_err(&ts->client->dev,
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"read of register %#08x failed: %d\n",
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addr, error);
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return error;
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}
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*val = be32_to_cpu(data);
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return 0;
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}
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static int hideep_pgm_w_reg(struct hideep_ts *ts, u32 addr, u32 val)
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{
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__be32 data = cpu_to_be32(val);
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int error;
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error = hideep_pgm_w_mem(ts, addr, &data, 1);
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if (error) {
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dev_err(&ts->client->dev,
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"write to register %#08x (%#08x) failed: %d\n",
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addr, val, error);
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return error;
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}
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return 0;
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}
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#define SW_RESET_IN_PGM(clk) \
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{ \
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CNT, (clk)); \
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x03); \
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x01); \
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}
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#define SET_FLASH_PIO(ce) \
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CON, \
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0x01 | ((ce) << 1))
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#define SET_PIO_SIG(x, y) \
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_PIO_SIG + (x), (y))
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#define SET_FLASH_HWCONTROL() \
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CON, 0x00)
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#define NVM_W_SFR(x, y) \
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{ \
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SET_FLASH_PIO(1); \
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SET_PIO_SIG(x, y); \
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SET_FLASH_PIO(0); \
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}
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static void hideep_pgm_set(struct hideep_ts *ts)
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{
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x00);
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_SPC_CON, 0x00);
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_CLK_ENA, 0xFF);
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_CLK_CON, 0x01);
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hideep_pgm_w_reg(ts, HIDEEP_SYSCON_PWR_CON, 0x01);
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_TIM, 0x03);
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CACHE_CFG, 0x00);
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}
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static int hideep_pgm_get_pattern(struct hideep_ts *ts, u32 *pattern)
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{
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u16 p1 = 0xAF39;
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u16 p2 = 0xDF9D;
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int error;
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error = regmap_bulk_write(ts->reg, p1, &p2, 1);
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if (error) {
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dev_err(&ts->client->dev,
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"%s: regmap_bulk_write() failed with %d\n",
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__func__, error);
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return error;
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}
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usleep_range(1000, 1100);
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/* flush invalid Tx load register */
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error = hideep_pgm_w_reg(ts, HIDEEP_ESI_TX_INVALID, 0x01);
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if (error)
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return error;
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error = hideep_pgm_r_reg(ts, HIDEEP_SYSCON_PGM_ID, pattern);
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if (error)
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return error;
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return 0;
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}
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static int hideep_enter_pgm(struct hideep_ts *ts)
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{
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int retry_count = 10;
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u32 pattern;
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int error;
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while (retry_count--) {
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error = hideep_pgm_get_pattern(ts, &pattern);
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if (error) {
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dev_err(&ts->client->dev,
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"hideep_pgm_get_pattern failed: %d\n", error);
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} else if (pattern != 0x39AF9DDF) {
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dev_err(&ts->client->dev, "%s: bad pattern: %#08x\n",
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__func__, pattern);
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} else {
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dev_dbg(&ts->client->dev, "found magic code");
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hideep_pgm_set(ts);
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usleep_range(1000, 1100);
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return 0;
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}
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}
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dev_err(&ts->client->dev, "failed to enter pgm mode\n");
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SW_RESET_IN_PGM(1000);
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return -EIO;
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}
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static void hideep_nvm_unlock(struct hideep_ts *ts)
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{
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u32 unmask_code;
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_SFR_RPAGE);
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hideep_pgm_r_reg(ts, 0x0000000C, &unmask_code);
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_DEFAULT_PAGE);
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/* make it unprotected code */
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unmask_code &= ~HIDEEP_PROT_MODE;
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/* compare unmask code */
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if (unmask_code != ts->nvm_mask)
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dev_warn(&ts->client->dev,
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"read mask code different %#08x vs %#08x",
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unmask_code, ts->nvm_mask);
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_SFR_WPAGE);
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SET_FLASH_PIO(0);
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NVM_W_SFR(HIDEEP_NVM_MASK_OFS, ts->nvm_mask);
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SET_FLASH_HWCONTROL();
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hideep_pgm_w_reg(ts, HIDEEP_FLASH_CFG, HIDEEP_NVM_DEFAULT_PAGE);
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}
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static int hideep_check_status(struct hideep_ts *ts)
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{
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int time_out = 100;
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int status;
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int error;
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while (time_out--) {
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error = hideep_pgm_r_reg(ts, HIDEEP_FLASH_STA, &status);
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if (!error && status)
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return 0;
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usleep_range(1000, 1100);
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}
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return -ETIMEDOUT;
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}
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static int hideep_program_page(struct hideep_ts *ts, u32 addr,
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const __be32 *ucode, size_t xfer_count)
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{
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u32 val;
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int error;
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error = hideep_check_status(ts);
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if (error)
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return -EBUSY;
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addr &= ~(HIDEEP_NVM_PAGE_SIZE - 1);
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SET_FLASH_PIO(0);
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SET_FLASH_PIO(1);
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/* erase page */
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SET_PIO_SIG(HIDEEP_PERASE | addr, 0xFFFFFFFF);
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SET_FLASH_PIO(0);
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error = hideep_check_status(ts);
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if (error)
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return -EBUSY;
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/* write page */
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SET_FLASH_PIO(1);
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val = be32_to_cpu(ucode[0]);
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SET_PIO_SIG(HIDEEP_WRONLY | addr, val);
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hideep_pgm_w_mem(ts, HIDEEP_FLASH_PIO_SIG | HIDEEP_WRONLY,
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ucode, xfer_count);
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val = be32_to_cpu(ucode[xfer_count - 1]);
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SET_PIO_SIG(124, val);
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SET_FLASH_PIO(0);
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usleep_range(1000, 1100);
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error = hideep_check_status(ts);
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if (error)
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return -EBUSY;
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SET_FLASH_HWCONTROL();
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return 0;
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}
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static int hideep_program_nvm(struct hideep_ts *ts,
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const __be32 *ucode, size_t ucode_len)
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{
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struct pgm_packet *packet_r = (void *)ts->xfer_buf;
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__be32 *current_ucode = packet_r->payload;
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size_t xfer_len;
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size_t xfer_count;
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u32 addr = 0;
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int error;
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hideep_nvm_unlock(ts);
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while (ucode_len > 0) {
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xfer_len = min_t(size_t, ucode_len, HIDEEP_NVM_PAGE_SIZE);
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xfer_count = xfer_len / sizeof(*ucode);
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error = hideep_pgm_r_mem(ts, 0x00000000 + addr,
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current_ucode, xfer_count);
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if (error) {
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dev_err(&ts->client->dev,
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"%s: failed to read page at offset %#08x: %d\n",
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__func__, addr, error);
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return error;
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}
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/* See if the page needs updating */
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if (memcmp(ucode, current_ucode, xfer_len)) {
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error = hideep_program_page(ts, addr,
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ucode, xfer_count);
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if (error) {
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dev_err(&ts->client->dev,
|
|
"%s: iwrite failure @%#08x: %d\n",
|
|
__func__, addr, error);
|
|
return error;
|
|
}
|
|
|
|
usleep_range(1000, 1100);
|
|
}
|
|
|
|
ucode += xfer_count;
|
|
addr += xfer_len;
|
|
ucode_len -= xfer_len;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hideep_verify_nvm(struct hideep_ts *ts,
|
|
const __be32 *ucode, size_t ucode_len)
|
|
{
|
|
struct pgm_packet *packet_r = (void *)ts->xfer_buf;
|
|
__be32 *current_ucode = packet_r->payload;
|
|
size_t xfer_len;
|
|
size_t xfer_count;
|
|
u32 addr = 0;
|
|
int i;
|
|
int error;
|
|
|
|
while (ucode_len > 0) {
|
|
xfer_len = min_t(size_t, ucode_len, HIDEEP_NVM_PAGE_SIZE);
|
|
xfer_count = xfer_len / sizeof(*ucode);
|
|
|
|
error = hideep_pgm_r_mem(ts, 0x00000000 + addr,
|
|
current_ucode, xfer_count);
|
|
if (error) {
|
|
dev_err(&ts->client->dev,
|
|
"%s: failed to read page at offset %#08x: %d\n",
|
|
__func__, addr, error);
|
|
return error;
|
|
}
|
|
|
|
if (memcmp(ucode, current_ucode, xfer_len)) {
|
|
const u8 *ucode_bytes = (const u8 *)ucode;
|
|
const u8 *current_bytes = (const u8 *)current_ucode;
|
|
|
|
for (i = 0; i < xfer_len; i++)
|
|
if (ucode_bytes[i] != current_bytes[i])
|
|
dev_err(&ts->client->dev,
|
|
"%s: mismatch @%#08x: (%#02x vs %#02x)\n",
|
|
__func__, addr + i,
|
|
ucode_bytes[i],
|
|
current_bytes[i]);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
ucode += xfer_count;
|
|
addr += xfer_len;
|
|
ucode_len -= xfer_len;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hideep_load_dwz(struct hideep_ts *ts)
|
|
{
|
|
u16 product_code;
|
|
int error;
|
|
|
|
error = hideep_enter_pgm(ts);
|
|
if (error)
|
|
return error;
|
|
|
|
msleep(50);
|
|
|
|
error = hideep_pgm_r_mem(ts, HIDEEP_DWZ_INFO,
|
|
(void *)&ts->dwz_info,
|
|
sizeof(ts->dwz_info) / sizeof(__be32));
|
|
|
|
SW_RESET_IN_PGM(10);
|
|
msleep(50);
|
|
|
|
if (error) {
|
|
dev_err(&ts->client->dev,
|
|
"failed to fetch DWZ data: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
product_code = be16_to_cpu(ts->dwz_info.product_code);
|
|
|
|
switch (product_code & 0xF0) {
|
|
case 0x40:
|
|
dev_dbg(&ts->client->dev, "used crimson IC");
|
|
ts->fw_size = 1024 * 48;
|
|
ts->nvm_mask = 0x00310000;
|
|
break;
|
|
case 0x60:
|
|
dev_dbg(&ts->client->dev, "used lime IC");
|
|
ts->fw_size = 1024 * 64;
|
|
ts->nvm_mask = 0x0030027B;
|
|
break;
|
|
default:
|
|
dev_err(&ts->client->dev, "product code is wrong: %#04x",
|
|
product_code);
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(&ts->client->dev, "firmware release version: %#04x",
|
|
be16_to_cpu(ts->dwz_info.release_ver));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hideep_flash_firmware(struct hideep_ts *ts,
|
|
const __be32 *ucode, size_t ucode_len)
|
|
{
|
|
int retry_cnt = 3;
|
|
int error;
|
|
|
|
while (retry_cnt--) {
|
|
error = hideep_program_nvm(ts, ucode, ucode_len);
|
|
if (!error) {
|
|
error = hideep_verify_nvm(ts, ucode, ucode_len);
|
|
if (!error)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
static int hideep_update_firmware(struct hideep_ts *ts,
|
|
const __be32 *ucode, size_t ucode_len)
|
|
{
|
|
int error, error2;
|
|
|
|
dev_dbg(&ts->client->dev, "starting firmware update");
|
|
|
|
/* enter program mode */
|
|
error = hideep_enter_pgm(ts);
|
|
if (error)
|
|
return error;
|
|
|
|
error = hideep_flash_firmware(ts, ucode, ucode_len);
|
|
if (error)
|
|
dev_err(&ts->client->dev,
|
|
"firmware update failed: %d\n", error);
|
|
else
|
|
dev_dbg(&ts->client->dev, "firmware updated successfully\n");
|
|
|
|
SW_RESET_IN_PGM(1000);
|
|
|
|
error2 = hideep_load_dwz(ts);
|
|
if (error2)
|
|
dev_err(&ts->client->dev,
|
|
"failed to load dwz after firmware update: %d\n",
|
|
error2);
|
|
|
|
return error ?: error2;
|
|
}
|
|
|
|
static int hideep_power_on(struct hideep_ts *ts)
|
|
{
|
|
int error = 0;
|
|
|
|
error = regulator_enable(ts->vcc_vdd);
|
|
if (error)
|
|
dev_err(&ts->client->dev,
|
|
"failed to enable 'vdd' regulator: %d", error);
|
|
|
|
usleep_range(999, 1000);
|
|
|
|
error = regulator_enable(ts->vcc_vid);
|
|
if (error)
|
|
dev_err(&ts->client->dev,
|
|
"failed to enable 'vcc_vid' regulator: %d",
|
|
error);
|
|
|
|
msleep(30);
|
|
|
|
if (ts->reset_gpio) {
|
|
gpiod_set_value_cansleep(ts->reset_gpio, 0);
|
|
} else {
|
|
error = regmap_write(ts->reg, HIDEEP_RESET_CMD, 0x01);
|
|
if (error)
|
|
dev_err(&ts->client->dev,
|
|
"failed to send 'reset' command: %d\n", error);
|
|
}
|
|
|
|
msleep(50);
|
|
|
|
return error;
|
|
}
|
|
|
|
static void hideep_power_off(void *data)
|
|
{
|
|
struct hideep_ts *ts = data;
|
|
|
|
if (ts->reset_gpio)
|
|
gpiod_set_value(ts->reset_gpio, 1);
|
|
|
|
regulator_disable(ts->vcc_vid);
|
|
regulator_disable(ts->vcc_vdd);
|
|
}
|
|
|
|
#define __GET_MT_TOOL_TYPE(type) ((type) == 0x01 ? MT_TOOL_FINGER : MT_TOOL_PEN)
|
|
|
|
static void hideep_report_slot(struct input_dev *input,
|
|
const struct hideep_event *event)
|
|
{
|
|
input_mt_slot(input, event->index & 0x0f);
|
|
input_mt_report_slot_state(input,
|
|
__GET_MT_TOOL_TYPE(event->type),
|
|
!(event->flag & HIDEEP_MT_RELEASED));
|
|
if (!(event->flag & HIDEEP_MT_RELEASED)) {
|
|
input_report_abs(input, ABS_MT_POSITION_X,
|
|
le16_to_cpup(&event->x));
|
|
input_report_abs(input, ABS_MT_POSITION_Y,
|
|
le16_to_cpup(&event->y));
|
|
input_report_abs(input, ABS_MT_PRESSURE,
|
|
le16_to_cpup(&event->z));
|
|
input_report_abs(input, ABS_MT_TOUCH_MAJOR, event->w);
|
|
}
|
|
}
|
|
|
|
static void hideep_parse_and_report(struct hideep_ts *ts)
|
|
{
|
|
const struct hideep_event *events =
|
|
(void *)&ts->xfer_buf[HIDEEP_TOUCH_EVENT_INDEX];
|
|
const u8 *keys = &ts->xfer_buf[HIDEEP_KEY_EVENT_INDEX];
|
|
int touch_count = ts->xfer_buf[0];
|
|
int key_count = ts->xfer_buf[1] & 0x0f;
|
|
int lpm_count = ts->xfer_buf[1] & 0xf0;
|
|
int i;
|
|
|
|
/* get touch event count */
|
|
dev_dbg(&ts->client->dev, "mt = %d, key = %d, lpm = %02x",
|
|
touch_count, key_count, lpm_count);
|
|
|
|
touch_count = min(touch_count, HIDEEP_MT_MAX);
|
|
for (i = 0; i < touch_count; i++)
|
|
hideep_report_slot(ts->input_dev, events + i);
|
|
|
|
key_count = min(key_count, HIDEEP_KEY_MAX);
|
|
for (i = 0; i < key_count; i++) {
|
|
u8 key_data = keys[i * 2];
|
|
|
|
input_report_key(ts->input_dev,
|
|
ts->key_codes[key_data & HIDEEP_KEY_IDX_MASK],
|
|
key_data & HIDEEP_KEY_PRESSED_MASK);
|
|
}
|
|
|
|
input_mt_sync_frame(ts->input_dev);
|
|
input_sync(ts->input_dev);
|
|
}
|
|
|
|
static irqreturn_t hideep_irq(int irq, void *handle)
|
|
{
|
|
struct hideep_ts *ts = handle;
|
|
int error;
|
|
|
|
BUILD_BUG_ON(HIDEEP_MAX_EVENT > HIDEEP_XFER_BUF_SIZE);
|
|
|
|
error = regmap_bulk_read(ts->reg, HIDEEP_EVENT_ADDR,
|
|
ts->xfer_buf, HIDEEP_MAX_EVENT / 2);
|
|
if (error) {
|
|
dev_err(&ts->client->dev, "failed to read events: %d\n", error);
|
|
goto out;
|
|
}
|
|
|
|
hideep_parse_and_report(ts);
|
|
|
|
out:
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int hideep_get_axis_info(struct hideep_ts *ts)
|
|
{
|
|
__le16 val[2];
|
|
int error;
|
|
|
|
error = regmap_bulk_read(ts->reg, 0x28, val, ARRAY_SIZE(val));
|
|
if (error)
|
|
return error;
|
|
|
|
ts->prop.max_x = le16_to_cpup(val);
|
|
ts->prop.max_y = le16_to_cpup(val + 1);
|
|
|
|
dev_dbg(&ts->client->dev, "X: %d, Y: %d",
|
|
ts->prop.max_x, ts->prop.max_y);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hideep_init_input(struct hideep_ts *ts)
|
|
{
|
|
struct device *dev = &ts->client->dev;
|
|
int i;
|
|
int error;
|
|
|
|
ts->input_dev = devm_input_allocate_device(dev);
|
|
if (!ts->input_dev) {
|
|
dev_err(dev, "failed to allocate input device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ts->input_dev->name = HIDEEP_TS_NAME;
|
|
ts->input_dev->id.bustype = BUS_I2C;
|
|
input_set_drvdata(ts->input_dev, ts);
|
|
|
|
input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);
|
|
input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);
|
|
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);
|
|
input_set_abs_params(ts->input_dev, ABS_MT_TOOL_TYPE,
|
|
0, MT_TOOL_MAX, 0, 0);
|
|
touchscreen_parse_properties(ts->input_dev, true, &ts->prop);
|
|
|
|
if (ts->prop.max_x == 0 || ts->prop.max_y == 0) {
|
|
error = hideep_get_axis_info(ts);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
error = input_mt_init_slots(ts->input_dev, HIDEEP_MT_MAX,
|
|
INPUT_MT_DIRECT);
|
|
if (error)
|
|
return error;
|
|
|
|
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 keys defined: %d\n",
|
|
ts->key_num);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (ts->key_num <= 0) {
|
|
dev_dbg(dev,
|
|
"missing or malformed 'linux,keycodes' property\n");
|
|
} else {
|
|
error = device_property_read_u32_array(dev, "linux,keycodes",
|
|
ts->key_codes,
|
|
ts->key_num);
|
|
if (error) {
|
|
dev_dbg(dev, "failed to read keymap: %d", error);
|
|
return error;
|
|
}
|
|
|
|
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]);
|
|
}
|
|
}
|
|
|
|
error = input_register_device(ts->input_dev);
|
|
if (error) {
|
|
dev_err(dev, "failed to register input device: %d", error);
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t hideep_update_fw(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct hideep_ts *ts = i2c_get_clientdata(client);
|
|
const struct firmware *fw_entry;
|
|
char *fw_name;
|
|
int mode;
|
|
int error;
|
|
|
|
error = kstrtoint(buf, 0, &mode);
|
|
if (error)
|
|
return error;
|
|
|
|
fw_name = kasprintf(GFP_KERNEL, "hideep_ts_%04x.bin",
|
|
be16_to_cpu(ts->dwz_info.product_id));
|
|
if (!fw_name)
|
|
return -ENOMEM;
|
|
|
|
error = request_firmware(&fw_entry, fw_name, dev);
|
|
if (error) {
|
|
dev_err(dev, "failed to request firmware %s: %d",
|
|
fw_name, error);
|
|
goto out_free_fw_name;
|
|
}
|
|
|
|
if (fw_entry->size % sizeof(__be32)) {
|
|
dev_err(dev, "invalid firmware size %zu\n", fw_entry->size);
|
|
error = -EINVAL;
|
|
goto out_release_fw;
|
|
}
|
|
|
|
if (fw_entry->size > ts->fw_size) {
|
|
dev_err(dev, "fw size (%zu) is too big (memory size %d)\n",
|
|
fw_entry->size, ts->fw_size);
|
|
error = -EFBIG;
|
|
goto out_release_fw;
|
|
}
|
|
|
|
mutex_lock(&ts->dev_mutex);
|
|
disable_irq(client->irq);
|
|
|
|
error = hideep_update_firmware(ts, (const __be32 *)fw_entry->data,
|
|
fw_entry->size);
|
|
|
|
enable_irq(client->irq);
|
|
mutex_unlock(&ts->dev_mutex);
|
|
|
|
out_release_fw:
|
|
release_firmware(fw_entry);
|
|
out_free_fw_name:
|
|
kfree(fw_name);
|
|
|
|
return error ?: count;
|
|
}
|
|
|
|
static ssize_t hideep_fw_version_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct hideep_ts *ts = i2c_get_clientdata(client);
|
|
ssize_t len;
|
|
|
|
mutex_lock(&ts->dev_mutex);
|
|
len = scnprintf(buf, PAGE_SIZE, "%04x\n",
|
|
be16_to_cpu(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)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct hideep_ts *ts = i2c_get_clientdata(client);
|
|
ssize_t len;
|
|
|
|
mutex_lock(&ts->dev_mutex);
|
|
len = scnprintf(buf, PAGE_SIZE, "%04x\n",
|
|
be16_to_cpu(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 const struct attribute_group hideep_ts_attr_group = {
|
|
.attrs = hideep_ts_sysfs_entries,
|
|
};
|
|
|
|
static int __maybe_unused hideep_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct hideep_ts *ts = i2c_get_clientdata(client);
|
|
|
|
disable_irq(client->irq);
|
|
hideep_power_off(ts);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused hideep_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct hideep_ts *ts = i2c_get_clientdata(client);
|
|
int error;
|
|
|
|
error = hideep_power_on(ts);
|
|
if (error) {
|
|
dev_err(&client->dev, "power on failed");
|
|
return error;
|
|
}
|
|
|
|
enable_irq(client->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(hideep_pm_ops, hideep_suspend, hideep_resume);
|
|
|
|
static 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)
|
|
{
|
|
struct hideep_ts *ts;
|
|
int error;
|
|
|
|
/* check i2c bus */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
|
|
dev_err(&client->dev, "check i2c device error");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (client->irq <= 0) {
|
|
dev_err(&client->dev, "missing irq: %d\n", client->irq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
|
|
if (!ts)
|
|
return -ENOMEM;
|
|
|
|
ts->client = client;
|
|
i2c_set_clientdata(client, ts);
|
|
mutex_init(&ts->dev_mutex);
|
|
|
|
ts->reg = devm_regmap_init_i2c(client, &hideep_regmap_config);
|
|
if (IS_ERR(ts->reg)) {
|
|
error = PTR_ERR(ts->reg);
|
|
dev_err(&client->dev,
|
|
"failed to initialize regmap: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
ts->vcc_vdd = devm_regulator_get(&client->dev, "vdd");
|
|
if (IS_ERR(ts->vcc_vdd))
|
|
return PTR_ERR(ts->vcc_vdd);
|
|
|
|
ts->vcc_vid = devm_regulator_get(&client->dev, "vid");
|
|
if (IS_ERR(ts->vcc_vid))
|
|
return PTR_ERR(ts->vcc_vid);
|
|
|
|
ts->reset_gpio = devm_gpiod_get_optional(&client->dev,
|
|
"reset", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(ts->reset_gpio))
|
|
return PTR_ERR(ts->reset_gpio);
|
|
|
|
error = hideep_power_on(ts);
|
|
if (error) {
|
|
dev_err(&client->dev, "power on failed: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
error = devm_add_action_or_reset(&client->dev, hideep_power_off, ts);
|
|
if (error)
|
|
return error;
|
|
|
|
error = hideep_load_dwz(ts);
|
|
if (error) {
|
|
dev_err(&client->dev, "failed to load dwz: %d", error);
|
|
return error;
|
|
}
|
|
|
|
error = hideep_init_input(ts);
|
|
if (error)
|
|
return error;
|
|
|
|
error = devm_request_threaded_irq(&client->dev, client->irq,
|
|
NULL, hideep_irq, IRQF_ONESHOT,
|
|
client->name, ts);
|
|
if (error) {
|
|
dev_err(&client->dev, "failed to request irq %d: %d\n",
|
|
client->irq, error);
|
|
return error;
|
|
}
|
|
|
|
error = devm_device_add_group(&client->dev, &hideep_ts_attr_group);
|
|
if (error) {
|
|
dev_err(&client->dev,
|
|
"failed to add sysfs attributes: %d\n", error);
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id hideep_i2c_id[] = {
|
|
{ HIDEEP_I2C_NAME, 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, hideep_i2c_id);
|
|
|
|
#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 = {
|
|
.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,
|
|
},
|
|
.id_table = hideep_i2c_id,
|
|
.probe = hideep_probe,
|
|
};
|
|
|
|
module_i2c_driver(hideep_driver);
|
|
|
|
MODULE_DESCRIPTION("Driver for HiDeep Touchscreen Controller");
|
|
MODULE_AUTHOR("anthony.kim@hideep.com");
|
|
MODULE_LICENSE("GPL v2");
|