mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1826 lines
45 KiB
1826 lines
45 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* Azoteq IQS269A Capacitive Touch Controller |
|
* |
|
* Copyright (C) 2020 Jeff LaBundy <[email protected]> |
|
* |
|
* This driver registers up to 3 input devices: one representing capacitive or |
|
* inductive keys as well as Hall-effect switches, and one for each of the two |
|
* axial sliders presented by the device. |
|
*/ |
|
|
|
#include <linux/delay.h> |
|
#include <linux/device.h> |
|
#include <linux/err.h> |
|
#include <linux/i2c.h> |
|
#include <linux/input.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/kernel.h> |
|
#include <linux/module.h> |
|
#include <linux/mutex.h> |
|
#include <linux/of_device.h> |
|
#include <linux/property.h> |
|
#include <linux/regmap.h> |
|
#include <linux/slab.h> |
|
|
|
#define IQS269_VER_INFO 0x00 |
|
#define IQS269_VER_INFO_PROD_NUM 0x4F |
|
|
|
#define IQS269_SYS_FLAGS 0x02 |
|
#define IQS269_SYS_FLAGS_SHOW_RESET BIT(15) |
|
#define IQS269_SYS_FLAGS_PWR_MODE_MASK GENMASK(12, 11) |
|
#define IQS269_SYS_FLAGS_PWR_MODE_SHIFT 11 |
|
#define IQS269_SYS_FLAGS_IN_ATI BIT(10) |
|
|
|
#define IQS269_CHx_COUNTS 0x08 |
|
|
|
#define IQS269_SLIDER_X 0x30 |
|
|
|
#define IQS269_CAL_DATA_A 0x35 |
|
#define IQS269_CAL_DATA_A_HALL_BIN_L_MASK GENMASK(15, 12) |
|
#define IQS269_CAL_DATA_A_HALL_BIN_L_SHIFT 12 |
|
#define IQS269_CAL_DATA_A_HALL_BIN_R_MASK GENMASK(11, 8) |
|
#define IQS269_CAL_DATA_A_HALL_BIN_R_SHIFT 8 |
|
|
|
#define IQS269_SYS_SETTINGS 0x80 |
|
#define IQS269_SYS_SETTINGS_CLK_DIV BIT(15) |
|
#define IQS269_SYS_SETTINGS_ULP_AUTO BIT(14) |
|
#define IQS269_SYS_SETTINGS_DIS_AUTO BIT(13) |
|
#define IQS269_SYS_SETTINGS_PWR_MODE_MASK GENMASK(12, 11) |
|
#define IQS269_SYS_SETTINGS_PWR_MODE_SHIFT 11 |
|
#define IQS269_SYS_SETTINGS_PWR_MODE_MAX 3 |
|
#define IQS269_SYS_SETTINGS_ULP_UPDATE_MASK GENMASK(10, 8) |
|
#define IQS269_SYS_SETTINGS_ULP_UPDATE_SHIFT 8 |
|
#define IQS269_SYS_SETTINGS_ULP_UPDATE_MAX 7 |
|
#define IQS269_SYS_SETTINGS_RESEED_OFFSET BIT(6) |
|
#define IQS269_SYS_SETTINGS_EVENT_MODE BIT(5) |
|
#define IQS269_SYS_SETTINGS_EVENT_MODE_LP BIT(4) |
|
#define IQS269_SYS_SETTINGS_REDO_ATI BIT(2) |
|
#define IQS269_SYS_SETTINGS_ACK_RESET BIT(0) |
|
|
|
#define IQS269_FILT_STR_LP_LTA_MASK GENMASK(7, 6) |
|
#define IQS269_FILT_STR_LP_LTA_SHIFT 6 |
|
#define IQS269_FILT_STR_LP_CNT_MASK GENMASK(5, 4) |
|
#define IQS269_FILT_STR_LP_CNT_SHIFT 4 |
|
#define IQS269_FILT_STR_NP_LTA_MASK GENMASK(3, 2) |
|
#define IQS269_FILT_STR_NP_LTA_SHIFT 2 |
|
#define IQS269_FILT_STR_NP_CNT_MASK GENMASK(1, 0) |
|
#define IQS269_FILT_STR_MAX 3 |
|
|
|
#define IQS269_EVENT_MASK_SYS BIT(6) |
|
#define IQS269_EVENT_MASK_DEEP BIT(2) |
|
#define IQS269_EVENT_MASK_TOUCH BIT(1) |
|
#define IQS269_EVENT_MASK_PROX BIT(0) |
|
|
|
#define IQS269_RATE_NP_MS_MAX 255 |
|
#define IQS269_RATE_LP_MS_MAX 255 |
|
#define IQS269_RATE_ULP_MS_MAX 4080 |
|
#define IQS269_TIMEOUT_PWR_MS_MAX 130560 |
|
#define IQS269_TIMEOUT_LTA_MS_MAX 130560 |
|
|
|
#define IQS269_MISC_A_ATI_BAND_DISABLE BIT(15) |
|
#define IQS269_MISC_A_ATI_LP_ONLY BIT(14) |
|
#define IQS269_MISC_A_ATI_BAND_TIGHTEN BIT(13) |
|
#define IQS269_MISC_A_FILT_DISABLE BIT(12) |
|
#define IQS269_MISC_A_GPIO3_SELECT_MASK GENMASK(10, 8) |
|
#define IQS269_MISC_A_GPIO3_SELECT_SHIFT 8 |
|
#define IQS269_MISC_A_DUAL_DIR BIT(6) |
|
#define IQS269_MISC_A_TX_FREQ_MASK GENMASK(5, 4) |
|
#define IQS269_MISC_A_TX_FREQ_SHIFT 4 |
|
#define IQS269_MISC_A_TX_FREQ_MAX 3 |
|
#define IQS269_MISC_A_GLOBAL_CAP_SIZE BIT(0) |
|
|
|
#define IQS269_MISC_B_RESEED_UI_SEL_MASK GENMASK(7, 6) |
|
#define IQS269_MISC_B_RESEED_UI_SEL_SHIFT 6 |
|
#define IQS269_MISC_B_RESEED_UI_SEL_MAX 3 |
|
#define IQS269_MISC_B_TRACKING_UI_ENABLE BIT(4) |
|
#define IQS269_MISC_B_FILT_STR_SLIDER GENMASK(1, 0) |
|
|
|
#define IQS269_CHx_SETTINGS 0x8C |
|
|
|
#define IQS269_CHx_ENG_A_MEAS_CAP_SIZE BIT(15) |
|
#define IQS269_CHx_ENG_A_RX_GND_INACTIVE BIT(13) |
|
#define IQS269_CHx_ENG_A_LOCAL_CAP_SIZE BIT(12) |
|
#define IQS269_CHx_ENG_A_ATI_MODE_MASK GENMASK(9, 8) |
|
#define IQS269_CHx_ENG_A_ATI_MODE_SHIFT 8 |
|
#define IQS269_CHx_ENG_A_ATI_MODE_MAX 3 |
|
#define IQS269_CHx_ENG_A_INV_LOGIC BIT(7) |
|
#define IQS269_CHx_ENG_A_PROJ_BIAS_MASK GENMASK(6, 5) |
|
#define IQS269_CHx_ENG_A_PROJ_BIAS_SHIFT 5 |
|
#define IQS269_CHx_ENG_A_PROJ_BIAS_MAX 3 |
|
#define IQS269_CHx_ENG_A_SENSE_MODE_MASK GENMASK(3, 0) |
|
#define IQS269_CHx_ENG_A_SENSE_MODE_MAX 15 |
|
|
|
#define IQS269_CHx_ENG_B_LOCAL_CAP_ENABLE BIT(13) |
|
#define IQS269_CHx_ENG_B_SENSE_FREQ_MASK GENMASK(10, 9) |
|
#define IQS269_CHx_ENG_B_SENSE_FREQ_SHIFT 9 |
|
#define IQS269_CHx_ENG_B_SENSE_FREQ_MAX 3 |
|
#define IQS269_CHx_ENG_B_STATIC_ENABLE BIT(8) |
|
#define IQS269_CHx_ENG_B_ATI_BASE_MASK GENMASK(7, 6) |
|
#define IQS269_CHx_ENG_B_ATI_BASE_75 0x00 |
|
#define IQS269_CHx_ENG_B_ATI_BASE_100 0x40 |
|
#define IQS269_CHx_ENG_B_ATI_BASE_150 0x80 |
|
#define IQS269_CHx_ENG_B_ATI_BASE_200 0xC0 |
|
#define IQS269_CHx_ENG_B_ATI_TARGET_MASK GENMASK(5, 0) |
|
#define IQS269_CHx_ENG_B_ATI_TARGET_MAX 2016 |
|
|
|
#define IQS269_CHx_WEIGHT_MAX 255 |
|
#define IQS269_CHx_THRESH_MAX 255 |
|
#define IQS269_CHx_HYST_DEEP_MASK GENMASK(7, 4) |
|
#define IQS269_CHx_HYST_DEEP_SHIFT 4 |
|
#define IQS269_CHx_HYST_TOUCH_MASK GENMASK(3, 0) |
|
#define IQS269_CHx_HYST_MAX 15 |
|
|
|
#define IQS269_CHx_HALL_INACTIVE 6 |
|
#define IQS269_CHx_HALL_ACTIVE 7 |
|
|
|
#define IQS269_HALL_PAD_R BIT(0) |
|
#define IQS269_HALL_PAD_L BIT(1) |
|
#define IQS269_HALL_PAD_INV BIT(6) |
|
|
|
#define IQS269_HALL_UI 0xF5 |
|
#define IQS269_HALL_UI_ENABLE BIT(15) |
|
|
|
#define IQS269_MAX_REG 0xFF |
|
|
|
#define IQS269_NUM_CH 8 |
|
#define IQS269_NUM_SL 2 |
|
|
|
#define IQS269_ATI_POLL_SLEEP_US (iqs269->delay_mult * 10000) |
|
#define IQS269_ATI_POLL_TIMEOUT_US (iqs269->delay_mult * 500000) |
|
#define IQS269_ATI_STABLE_DELAY_MS (iqs269->delay_mult * 150) |
|
|
|
#define IQS269_PWR_MODE_POLL_SLEEP_US IQS269_ATI_POLL_SLEEP_US |
|
#define IQS269_PWR_MODE_POLL_TIMEOUT_US IQS269_ATI_POLL_TIMEOUT_US |
|
|
|
#define iqs269_irq_wait() usleep_range(100, 150) |
|
|
|
enum iqs269_local_cap_size { |
|
IQS269_LOCAL_CAP_SIZE_0, |
|
IQS269_LOCAL_CAP_SIZE_GLOBAL_ONLY, |
|
IQS269_LOCAL_CAP_SIZE_GLOBAL_0pF5, |
|
}; |
|
|
|
enum iqs269_st_offs { |
|
IQS269_ST_OFFS_PROX, |
|
IQS269_ST_OFFS_DIR, |
|
IQS269_ST_OFFS_TOUCH, |
|
IQS269_ST_OFFS_DEEP, |
|
}; |
|
|
|
enum iqs269_th_offs { |
|
IQS269_TH_OFFS_PROX, |
|
IQS269_TH_OFFS_TOUCH, |
|
IQS269_TH_OFFS_DEEP, |
|
}; |
|
|
|
enum iqs269_event_id { |
|
IQS269_EVENT_PROX_DN, |
|
IQS269_EVENT_PROX_UP, |
|
IQS269_EVENT_TOUCH_DN, |
|
IQS269_EVENT_TOUCH_UP, |
|
IQS269_EVENT_DEEP_DN, |
|
IQS269_EVENT_DEEP_UP, |
|
}; |
|
|
|
struct iqs269_switch_desc { |
|
unsigned int code; |
|
bool enabled; |
|
}; |
|
|
|
struct iqs269_event_desc { |
|
const char *name; |
|
enum iqs269_st_offs st_offs; |
|
enum iqs269_th_offs th_offs; |
|
bool dir_up; |
|
u8 mask; |
|
}; |
|
|
|
static const struct iqs269_event_desc iqs269_events[] = { |
|
[IQS269_EVENT_PROX_DN] = { |
|
.name = "event-prox", |
|
.st_offs = IQS269_ST_OFFS_PROX, |
|
.th_offs = IQS269_TH_OFFS_PROX, |
|
.mask = IQS269_EVENT_MASK_PROX, |
|
}, |
|
[IQS269_EVENT_PROX_UP] = { |
|
.name = "event-prox-alt", |
|
.st_offs = IQS269_ST_OFFS_PROX, |
|
.th_offs = IQS269_TH_OFFS_PROX, |
|
.dir_up = true, |
|
.mask = IQS269_EVENT_MASK_PROX, |
|
}, |
|
[IQS269_EVENT_TOUCH_DN] = { |
|
.name = "event-touch", |
|
.st_offs = IQS269_ST_OFFS_TOUCH, |
|
.th_offs = IQS269_TH_OFFS_TOUCH, |
|
.mask = IQS269_EVENT_MASK_TOUCH, |
|
}, |
|
[IQS269_EVENT_TOUCH_UP] = { |
|
.name = "event-touch-alt", |
|
.st_offs = IQS269_ST_OFFS_TOUCH, |
|
.th_offs = IQS269_TH_OFFS_TOUCH, |
|
.dir_up = true, |
|
.mask = IQS269_EVENT_MASK_TOUCH, |
|
}, |
|
[IQS269_EVENT_DEEP_DN] = { |
|
.name = "event-deep", |
|
.st_offs = IQS269_ST_OFFS_DEEP, |
|
.th_offs = IQS269_TH_OFFS_DEEP, |
|
.mask = IQS269_EVENT_MASK_DEEP, |
|
}, |
|
[IQS269_EVENT_DEEP_UP] = { |
|
.name = "event-deep-alt", |
|
.st_offs = IQS269_ST_OFFS_DEEP, |
|
.th_offs = IQS269_TH_OFFS_DEEP, |
|
.dir_up = true, |
|
.mask = IQS269_EVENT_MASK_DEEP, |
|
}, |
|
}; |
|
|
|
struct iqs269_ver_info { |
|
u8 prod_num; |
|
u8 sw_num; |
|
u8 hw_num; |
|
u8 padding; |
|
} __packed; |
|
|
|
struct iqs269_sys_reg { |
|
__be16 general; |
|
u8 active; |
|
u8 filter; |
|
u8 reseed; |
|
u8 event_mask; |
|
u8 rate_np; |
|
u8 rate_lp; |
|
u8 rate_ulp; |
|
u8 timeout_pwr; |
|
u8 timeout_rdy; |
|
u8 timeout_lta; |
|
__be16 misc_a; |
|
__be16 misc_b; |
|
u8 blocking; |
|
u8 padding; |
|
u8 slider_select[IQS269_NUM_SL]; |
|
u8 timeout_tap; |
|
u8 timeout_swipe; |
|
u8 thresh_swipe; |
|
u8 redo_ati; |
|
} __packed; |
|
|
|
struct iqs269_ch_reg { |
|
u8 rx_enable; |
|
u8 tx_enable; |
|
__be16 engine_a; |
|
__be16 engine_b; |
|
__be16 ati_comp; |
|
u8 thresh[3]; |
|
u8 hyst; |
|
u8 assoc_select; |
|
u8 assoc_weight; |
|
} __packed; |
|
|
|
struct iqs269_flags { |
|
__be16 system; |
|
u8 gesture; |
|
u8 padding; |
|
u8 states[4]; |
|
} __packed; |
|
|
|
struct iqs269_private { |
|
struct i2c_client *client; |
|
struct regmap *regmap; |
|
struct mutex lock; |
|
struct iqs269_switch_desc switches[ARRAY_SIZE(iqs269_events)]; |
|
struct iqs269_ch_reg ch_reg[IQS269_NUM_CH]; |
|
struct iqs269_sys_reg sys_reg; |
|
struct input_dev *keypad; |
|
struct input_dev *slider[IQS269_NUM_SL]; |
|
unsigned int keycode[ARRAY_SIZE(iqs269_events) * IQS269_NUM_CH]; |
|
unsigned int suspend_mode; |
|
unsigned int delay_mult; |
|
unsigned int ch_num; |
|
bool hall_enable; |
|
bool ati_current; |
|
}; |
|
|
|
static int iqs269_ati_mode_set(struct iqs269_private *iqs269, |
|
unsigned int ch_num, unsigned int mode) |
|
{ |
|
u16 engine_a; |
|
|
|
if (ch_num >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
if (mode > IQS269_CHx_ENG_A_ATI_MODE_MAX) |
|
return -EINVAL; |
|
|
|
mutex_lock(&iqs269->lock); |
|
|
|
engine_a = be16_to_cpu(iqs269->ch_reg[ch_num].engine_a); |
|
|
|
engine_a &= ~IQS269_CHx_ENG_A_ATI_MODE_MASK; |
|
engine_a |= (mode << IQS269_CHx_ENG_A_ATI_MODE_SHIFT); |
|
|
|
iqs269->ch_reg[ch_num].engine_a = cpu_to_be16(engine_a); |
|
iqs269->ati_current = false; |
|
|
|
mutex_unlock(&iqs269->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_ati_mode_get(struct iqs269_private *iqs269, |
|
unsigned int ch_num, unsigned int *mode) |
|
{ |
|
u16 engine_a; |
|
|
|
if (ch_num >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
mutex_lock(&iqs269->lock); |
|
engine_a = be16_to_cpu(iqs269->ch_reg[ch_num].engine_a); |
|
mutex_unlock(&iqs269->lock); |
|
|
|
engine_a &= IQS269_CHx_ENG_A_ATI_MODE_MASK; |
|
*mode = (engine_a >> IQS269_CHx_ENG_A_ATI_MODE_SHIFT); |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_ati_base_set(struct iqs269_private *iqs269, |
|
unsigned int ch_num, unsigned int base) |
|
{ |
|
u16 engine_b; |
|
|
|
if (ch_num >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
switch (base) { |
|
case 75: |
|
base = IQS269_CHx_ENG_B_ATI_BASE_75; |
|
break; |
|
|
|
case 100: |
|
base = IQS269_CHx_ENG_B_ATI_BASE_100; |
|
break; |
|
|
|
case 150: |
|
base = IQS269_CHx_ENG_B_ATI_BASE_150; |
|
break; |
|
|
|
case 200: |
|
base = IQS269_CHx_ENG_B_ATI_BASE_200; |
|
break; |
|
|
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
mutex_lock(&iqs269->lock); |
|
|
|
engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b); |
|
|
|
engine_b &= ~IQS269_CHx_ENG_B_ATI_BASE_MASK; |
|
engine_b |= base; |
|
|
|
iqs269->ch_reg[ch_num].engine_b = cpu_to_be16(engine_b); |
|
iqs269->ati_current = false; |
|
|
|
mutex_unlock(&iqs269->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_ati_base_get(struct iqs269_private *iqs269, |
|
unsigned int ch_num, unsigned int *base) |
|
{ |
|
u16 engine_b; |
|
|
|
if (ch_num >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
mutex_lock(&iqs269->lock); |
|
engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b); |
|
mutex_unlock(&iqs269->lock); |
|
|
|
switch (engine_b & IQS269_CHx_ENG_B_ATI_BASE_MASK) { |
|
case IQS269_CHx_ENG_B_ATI_BASE_75: |
|
*base = 75; |
|
return 0; |
|
|
|
case IQS269_CHx_ENG_B_ATI_BASE_100: |
|
*base = 100; |
|
return 0; |
|
|
|
case IQS269_CHx_ENG_B_ATI_BASE_150: |
|
*base = 150; |
|
return 0; |
|
|
|
case IQS269_CHx_ENG_B_ATI_BASE_200: |
|
*base = 200; |
|
return 0; |
|
|
|
default: |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
static int iqs269_ati_target_set(struct iqs269_private *iqs269, |
|
unsigned int ch_num, unsigned int target) |
|
{ |
|
u16 engine_b; |
|
|
|
if (ch_num >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
if (target > IQS269_CHx_ENG_B_ATI_TARGET_MAX) |
|
return -EINVAL; |
|
|
|
mutex_lock(&iqs269->lock); |
|
|
|
engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b); |
|
|
|
engine_b &= ~IQS269_CHx_ENG_B_ATI_TARGET_MASK; |
|
engine_b |= target / 32; |
|
|
|
iqs269->ch_reg[ch_num].engine_b = cpu_to_be16(engine_b); |
|
iqs269->ati_current = false; |
|
|
|
mutex_unlock(&iqs269->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_ati_target_get(struct iqs269_private *iqs269, |
|
unsigned int ch_num, unsigned int *target) |
|
{ |
|
u16 engine_b; |
|
|
|
if (ch_num >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
mutex_lock(&iqs269->lock); |
|
engine_b = be16_to_cpu(iqs269->ch_reg[ch_num].engine_b); |
|
mutex_unlock(&iqs269->lock); |
|
|
|
*target = (engine_b & IQS269_CHx_ENG_B_ATI_TARGET_MASK) * 32; |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_parse_mask(const struct fwnode_handle *fwnode, |
|
const char *propname, u8 *mask) |
|
{ |
|
unsigned int val[IQS269_NUM_CH]; |
|
int count, error, i; |
|
|
|
count = fwnode_property_count_u32(fwnode, propname); |
|
if (count < 0) |
|
return 0; |
|
|
|
if (count > IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
error = fwnode_property_read_u32_array(fwnode, propname, val, count); |
|
if (error) |
|
return error; |
|
|
|
*mask = 0; |
|
|
|
for (i = 0; i < count; i++) { |
|
if (val[i] >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
*mask |= BIT(val[i]); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_parse_chan(struct iqs269_private *iqs269, |
|
const struct fwnode_handle *ch_node) |
|
{ |
|
struct i2c_client *client = iqs269->client; |
|
struct fwnode_handle *ev_node; |
|
struct iqs269_ch_reg *ch_reg; |
|
u16 engine_a, engine_b; |
|
unsigned int reg, val; |
|
int error, i; |
|
|
|
error = fwnode_property_read_u32(ch_node, "reg", ®); |
|
if (error) { |
|
dev_err(&client->dev, "Failed to read channel number: %d\n", |
|
error); |
|
return error; |
|
} else if (reg >= IQS269_NUM_CH) { |
|
dev_err(&client->dev, "Invalid channel number: %u\n", reg); |
|
return -EINVAL; |
|
} |
|
|
|
iqs269->sys_reg.active |= BIT(reg); |
|
if (!fwnode_property_present(ch_node, "azoteq,reseed-disable")) |
|
iqs269->sys_reg.reseed |= BIT(reg); |
|
|
|
if (fwnode_property_present(ch_node, "azoteq,blocking-enable")) |
|
iqs269->sys_reg.blocking |= BIT(reg); |
|
|
|
if (fwnode_property_present(ch_node, "azoteq,slider0-select")) |
|
iqs269->sys_reg.slider_select[0] |= BIT(reg); |
|
|
|
if (fwnode_property_present(ch_node, "azoteq,slider1-select")) |
|
iqs269->sys_reg.slider_select[1] |= BIT(reg); |
|
|
|
ch_reg = &iqs269->ch_reg[reg]; |
|
|
|
error = regmap_raw_read(iqs269->regmap, |
|
IQS269_CHx_SETTINGS + reg * sizeof(*ch_reg) / 2, |
|
ch_reg, sizeof(*ch_reg)); |
|
if (error) |
|
return error; |
|
|
|
error = iqs269_parse_mask(ch_node, "azoteq,rx-enable", |
|
&ch_reg->rx_enable); |
|
if (error) { |
|
dev_err(&client->dev, "Invalid channel %u RX enable mask: %d\n", |
|
reg, error); |
|
return error; |
|
} |
|
|
|
error = iqs269_parse_mask(ch_node, "azoteq,tx-enable", |
|
&ch_reg->tx_enable); |
|
if (error) { |
|
dev_err(&client->dev, "Invalid channel %u TX enable mask: %d\n", |
|
reg, error); |
|
return error; |
|
} |
|
|
|
engine_a = be16_to_cpu(ch_reg->engine_a); |
|
engine_b = be16_to_cpu(ch_reg->engine_b); |
|
|
|
engine_a |= IQS269_CHx_ENG_A_MEAS_CAP_SIZE; |
|
if (fwnode_property_present(ch_node, "azoteq,meas-cap-decrease")) |
|
engine_a &= ~IQS269_CHx_ENG_A_MEAS_CAP_SIZE; |
|
|
|
engine_a |= IQS269_CHx_ENG_A_RX_GND_INACTIVE; |
|
if (fwnode_property_present(ch_node, "azoteq,rx-float-inactive")) |
|
engine_a &= ~IQS269_CHx_ENG_A_RX_GND_INACTIVE; |
|
|
|
engine_a &= ~IQS269_CHx_ENG_A_LOCAL_CAP_SIZE; |
|
engine_b &= ~IQS269_CHx_ENG_B_LOCAL_CAP_ENABLE; |
|
if (!fwnode_property_read_u32(ch_node, "azoteq,local-cap-size", &val)) { |
|
switch (val) { |
|
case IQS269_LOCAL_CAP_SIZE_0: |
|
break; |
|
|
|
case IQS269_LOCAL_CAP_SIZE_GLOBAL_0pF5: |
|
engine_a |= IQS269_CHx_ENG_A_LOCAL_CAP_SIZE; |
|
fallthrough; |
|
|
|
case IQS269_LOCAL_CAP_SIZE_GLOBAL_ONLY: |
|
engine_b |= IQS269_CHx_ENG_B_LOCAL_CAP_ENABLE; |
|
break; |
|
|
|
default: |
|
dev_err(&client->dev, |
|
"Invalid channel %u local cap. size: %u\n", reg, |
|
val); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
engine_a &= ~IQS269_CHx_ENG_A_INV_LOGIC; |
|
if (fwnode_property_present(ch_node, "azoteq,invert-enable")) |
|
engine_a |= IQS269_CHx_ENG_A_INV_LOGIC; |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,proj-bias", &val)) { |
|
if (val > IQS269_CHx_ENG_A_PROJ_BIAS_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u bias current: %u\n", reg, |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
engine_a &= ~IQS269_CHx_ENG_A_PROJ_BIAS_MASK; |
|
engine_a |= (val << IQS269_CHx_ENG_A_PROJ_BIAS_SHIFT); |
|
} |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,sense-mode", &val)) { |
|
if (val > IQS269_CHx_ENG_A_SENSE_MODE_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u sensing mode: %u\n", reg, |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
engine_a &= ~IQS269_CHx_ENG_A_SENSE_MODE_MASK; |
|
engine_a |= val; |
|
} |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,sense-freq", &val)) { |
|
if (val > IQS269_CHx_ENG_B_SENSE_FREQ_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u sensing frequency: %u\n", |
|
reg, val); |
|
return -EINVAL; |
|
} |
|
|
|
engine_b &= ~IQS269_CHx_ENG_B_SENSE_FREQ_MASK; |
|
engine_b |= (val << IQS269_CHx_ENG_B_SENSE_FREQ_SHIFT); |
|
} |
|
|
|
engine_b &= ~IQS269_CHx_ENG_B_STATIC_ENABLE; |
|
if (fwnode_property_present(ch_node, "azoteq,static-enable")) |
|
engine_b |= IQS269_CHx_ENG_B_STATIC_ENABLE; |
|
|
|
ch_reg->engine_a = cpu_to_be16(engine_a); |
|
ch_reg->engine_b = cpu_to_be16(engine_b); |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,ati-mode", &val)) { |
|
error = iqs269_ati_mode_set(iqs269, reg, val); |
|
if (error) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u ATI mode: %u\n", reg, val); |
|
return error; |
|
} |
|
} |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,ati-base", &val)) { |
|
error = iqs269_ati_base_set(iqs269, reg, val); |
|
if (error) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u ATI base: %u\n", reg, val); |
|
return error; |
|
} |
|
} |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,ati-target", &val)) { |
|
error = iqs269_ati_target_set(iqs269, reg, val); |
|
if (error) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u ATI target: %u\n", reg, |
|
val); |
|
return error; |
|
} |
|
} |
|
|
|
error = iqs269_parse_mask(ch_node, "azoteq,assoc-select", |
|
&ch_reg->assoc_select); |
|
if (error) { |
|
dev_err(&client->dev, "Invalid channel %u association: %d\n", |
|
reg, error); |
|
return error; |
|
} |
|
|
|
if (!fwnode_property_read_u32(ch_node, "azoteq,assoc-weight", &val)) { |
|
if (val > IQS269_CHx_WEIGHT_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u associated weight: %u\n", |
|
reg, val); |
|
return -EINVAL; |
|
} |
|
|
|
ch_reg->assoc_weight = val; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(iqs269_events); i++) { |
|
ev_node = fwnode_get_named_child_node(ch_node, |
|
iqs269_events[i].name); |
|
if (!ev_node) |
|
continue; |
|
|
|
if (!fwnode_property_read_u32(ev_node, "azoteq,thresh", &val)) { |
|
if (val > IQS269_CHx_THRESH_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u threshold: %u\n", |
|
reg, val); |
|
return -EINVAL; |
|
} |
|
|
|
ch_reg->thresh[iqs269_events[i].th_offs] = val; |
|
} |
|
|
|
if (!fwnode_property_read_u32(ev_node, "azoteq,hyst", &val)) { |
|
u8 *hyst = &ch_reg->hyst; |
|
|
|
if (val > IQS269_CHx_HYST_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid channel %u hysteresis: %u\n", |
|
reg, val); |
|
return -EINVAL; |
|
} |
|
|
|
if (i == IQS269_EVENT_DEEP_DN || |
|
i == IQS269_EVENT_DEEP_UP) { |
|
*hyst &= ~IQS269_CHx_HYST_DEEP_MASK; |
|
*hyst |= (val << IQS269_CHx_HYST_DEEP_SHIFT); |
|
} else if (i == IQS269_EVENT_TOUCH_DN || |
|
i == IQS269_EVENT_TOUCH_UP) { |
|
*hyst &= ~IQS269_CHx_HYST_TOUCH_MASK; |
|
*hyst |= val; |
|
} |
|
} |
|
|
|
if (fwnode_property_read_u32(ev_node, "linux,code", &val)) |
|
continue; |
|
|
|
switch (reg) { |
|
case IQS269_CHx_HALL_ACTIVE: |
|
if (iqs269->hall_enable) { |
|
iqs269->switches[i].code = val; |
|
iqs269->switches[i].enabled = true; |
|
} |
|
fallthrough; |
|
|
|
case IQS269_CHx_HALL_INACTIVE: |
|
if (iqs269->hall_enable) |
|
break; |
|
fallthrough; |
|
|
|
default: |
|
iqs269->keycode[i * IQS269_NUM_CH + reg] = val; |
|
} |
|
|
|
iqs269->sys_reg.event_mask &= ~iqs269_events[i].mask; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_parse_prop(struct iqs269_private *iqs269) |
|
{ |
|
struct iqs269_sys_reg *sys_reg = &iqs269->sys_reg; |
|
struct i2c_client *client = iqs269->client; |
|
struct fwnode_handle *ch_node; |
|
u16 general, misc_a, misc_b; |
|
unsigned int val; |
|
int error; |
|
|
|
iqs269->hall_enable = device_property_present(&client->dev, |
|
"azoteq,hall-enable"); |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,suspend-mode", |
|
&val)) { |
|
if (val > IQS269_SYS_SETTINGS_PWR_MODE_MAX) { |
|
dev_err(&client->dev, "Invalid suspend mode: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
iqs269->suspend_mode = val; |
|
} |
|
|
|
error = regmap_raw_read(iqs269->regmap, IQS269_SYS_SETTINGS, sys_reg, |
|
sizeof(*sys_reg)); |
|
if (error) |
|
return error; |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,filt-str-lp-lta", |
|
&val)) { |
|
if (val > IQS269_FILT_STR_MAX) { |
|
dev_err(&client->dev, "Invalid filter strength: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->filter &= ~IQS269_FILT_STR_LP_LTA_MASK; |
|
sys_reg->filter |= (val << IQS269_FILT_STR_LP_LTA_SHIFT); |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,filt-str-lp-cnt", |
|
&val)) { |
|
if (val > IQS269_FILT_STR_MAX) { |
|
dev_err(&client->dev, "Invalid filter strength: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->filter &= ~IQS269_FILT_STR_LP_CNT_MASK; |
|
sys_reg->filter |= (val << IQS269_FILT_STR_LP_CNT_SHIFT); |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,filt-str-np-lta", |
|
&val)) { |
|
if (val > IQS269_FILT_STR_MAX) { |
|
dev_err(&client->dev, "Invalid filter strength: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->filter &= ~IQS269_FILT_STR_NP_LTA_MASK; |
|
sys_reg->filter |= (val << IQS269_FILT_STR_NP_LTA_SHIFT); |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,filt-str-np-cnt", |
|
&val)) { |
|
if (val > IQS269_FILT_STR_MAX) { |
|
dev_err(&client->dev, "Invalid filter strength: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->filter &= ~IQS269_FILT_STR_NP_CNT_MASK; |
|
sys_reg->filter |= val; |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,rate-np-ms", |
|
&val)) { |
|
if (val > IQS269_RATE_NP_MS_MAX) { |
|
dev_err(&client->dev, "Invalid report rate: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->rate_np = val; |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,rate-lp-ms", |
|
&val)) { |
|
if (val > IQS269_RATE_LP_MS_MAX) { |
|
dev_err(&client->dev, "Invalid report rate: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->rate_lp = val; |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,rate-ulp-ms", |
|
&val)) { |
|
if (val > IQS269_RATE_ULP_MS_MAX) { |
|
dev_err(&client->dev, "Invalid report rate: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->rate_ulp = val / 16; |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,timeout-pwr-ms", |
|
&val)) { |
|
if (val > IQS269_TIMEOUT_PWR_MS_MAX) { |
|
dev_err(&client->dev, "Invalid timeout: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->timeout_pwr = val / 512; |
|
} |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,timeout-lta-ms", |
|
&val)) { |
|
if (val > IQS269_TIMEOUT_LTA_MS_MAX) { |
|
dev_err(&client->dev, "Invalid timeout: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
sys_reg->timeout_lta = val / 512; |
|
} |
|
|
|
misc_a = be16_to_cpu(sys_reg->misc_a); |
|
misc_b = be16_to_cpu(sys_reg->misc_b); |
|
|
|
misc_a &= ~IQS269_MISC_A_ATI_BAND_DISABLE; |
|
if (device_property_present(&client->dev, "azoteq,ati-band-disable")) |
|
misc_a |= IQS269_MISC_A_ATI_BAND_DISABLE; |
|
|
|
misc_a &= ~IQS269_MISC_A_ATI_LP_ONLY; |
|
if (device_property_present(&client->dev, "azoteq,ati-lp-only")) |
|
misc_a |= IQS269_MISC_A_ATI_LP_ONLY; |
|
|
|
misc_a &= ~IQS269_MISC_A_ATI_BAND_TIGHTEN; |
|
if (device_property_present(&client->dev, "azoteq,ati-band-tighten")) |
|
misc_a |= IQS269_MISC_A_ATI_BAND_TIGHTEN; |
|
|
|
misc_a &= ~IQS269_MISC_A_FILT_DISABLE; |
|
if (device_property_present(&client->dev, "azoteq,filt-disable")) |
|
misc_a |= IQS269_MISC_A_FILT_DISABLE; |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,gpio3-select", |
|
&val)) { |
|
if (val >= IQS269_NUM_CH) { |
|
dev_err(&client->dev, "Invalid GPIO3 selection: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
misc_a &= ~IQS269_MISC_A_GPIO3_SELECT_MASK; |
|
misc_a |= (val << IQS269_MISC_A_GPIO3_SELECT_SHIFT); |
|
} |
|
|
|
misc_a &= ~IQS269_MISC_A_DUAL_DIR; |
|
if (device_property_present(&client->dev, "azoteq,dual-direction")) |
|
misc_a |= IQS269_MISC_A_DUAL_DIR; |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,tx-freq", &val)) { |
|
if (val > IQS269_MISC_A_TX_FREQ_MAX) { |
|
dev_err(&client->dev, |
|
"Invalid excitation frequency: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
misc_a &= ~IQS269_MISC_A_TX_FREQ_MASK; |
|
misc_a |= (val << IQS269_MISC_A_TX_FREQ_SHIFT); |
|
} |
|
|
|
misc_a &= ~IQS269_MISC_A_GLOBAL_CAP_SIZE; |
|
if (device_property_present(&client->dev, "azoteq,global-cap-increase")) |
|
misc_a |= IQS269_MISC_A_GLOBAL_CAP_SIZE; |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,reseed-select", |
|
&val)) { |
|
if (val > IQS269_MISC_B_RESEED_UI_SEL_MAX) { |
|
dev_err(&client->dev, "Invalid reseed selection: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
misc_b &= ~IQS269_MISC_B_RESEED_UI_SEL_MASK; |
|
misc_b |= (val << IQS269_MISC_B_RESEED_UI_SEL_SHIFT); |
|
} |
|
|
|
misc_b &= ~IQS269_MISC_B_TRACKING_UI_ENABLE; |
|
if (device_property_present(&client->dev, "azoteq,tracking-enable")) |
|
misc_b |= IQS269_MISC_B_TRACKING_UI_ENABLE; |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,filt-str-slider", |
|
&val)) { |
|
if (val > IQS269_FILT_STR_MAX) { |
|
dev_err(&client->dev, "Invalid filter strength: %u\n", |
|
val); |
|
return -EINVAL; |
|
} |
|
|
|
misc_b &= ~IQS269_MISC_B_FILT_STR_SLIDER; |
|
misc_b |= val; |
|
} |
|
|
|
sys_reg->misc_a = cpu_to_be16(misc_a); |
|
sys_reg->misc_b = cpu_to_be16(misc_b); |
|
|
|
sys_reg->active = 0; |
|
sys_reg->reseed = 0; |
|
|
|
sys_reg->blocking = 0; |
|
|
|
sys_reg->slider_select[0] = 0; |
|
sys_reg->slider_select[1] = 0; |
|
|
|
sys_reg->event_mask = ~((u8)IQS269_EVENT_MASK_SYS); |
|
|
|
device_for_each_child_node(&client->dev, ch_node) { |
|
error = iqs269_parse_chan(iqs269, ch_node); |
|
if (error) { |
|
fwnode_handle_put(ch_node); |
|
return error; |
|
} |
|
} |
|
|
|
/* |
|
* Volunteer all active channels to participate in ATI when REDO-ATI is |
|
* manually triggered. |
|
*/ |
|
sys_reg->redo_ati = sys_reg->active; |
|
|
|
general = be16_to_cpu(sys_reg->general); |
|
|
|
if (device_property_present(&client->dev, "azoteq,clk-div")) { |
|
general |= IQS269_SYS_SETTINGS_CLK_DIV; |
|
iqs269->delay_mult = 4; |
|
} else { |
|
general &= ~IQS269_SYS_SETTINGS_CLK_DIV; |
|
iqs269->delay_mult = 1; |
|
} |
|
|
|
/* |
|
* Configure the device to automatically switch between normal and low- |
|
* power modes as a function of sensing activity. Ultra-low-power mode, |
|
* if enabled, is reserved for suspend. |
|
*/ |
|
general &= ~IQS269_SYS_SETTINGS_ULP_AUTO; |
|
general &= ~IQS269_SYS_SETTINGS_DIS_AUTO; |
|
general &= ~IQS269_SYS_SETTINGS_PWR_MODE_MASK; |
|
|
|
if (!device_property_read_u32(&client->dev, "azoteq,ulp-update", |
|
&val)) { |
|
if (val > IQS269_SYS_SETTINGS_ULP_UPDATE_MAX) { |
|
dev_err(&client->dev, "Invalid update rate: %u\n", val); |
|
return -EINVAL; |
|
} |
|
|
|
general &= ~IQS269_SYS_SETTINGS_ULP_UPDATE_MASK; |
|
general |= (val << IQS269_SYS_SETTINGS_ULP_UPDATE_SHIFT); |
|
} |
|
|
|
general &= ~IQS269_SYS_SETTINGS_RESEED_OFFSET; |
|
if (device_property_present(&client->dev, "azoteq,reseed-offset")) |
|
general |= IQS269_SYS_SETTINGS_RESEED_OFFSET; |
|
|
|
general |= IQS269_SYS_SETTINGS_EVENT_MODE; |
|
|
|
/* |
|
* As per the datasheet, enable streaming during normal-power mode if |
|
* either slider is in use. In that case, the device returns to event |
|
* mode during low-power mode. |
|
*/ |
|
if (sys_reg->slider_select[0] || sys_reg->slider_select[1]) |
|
general |= IQS269_SYS_SETTINGS_EVENT_MODE_LP; |
|
|
|
general |= IQS269_SYS_SETTINGS_REDO_ATI; |
|
general |= IQS269_SYS_SETTINGS_ACK_RESET; |
|
|
|
sys_reg->general = cpu_to_be16(general); |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_dev_init(struct iqs269_private *iqs269) |
|
{ |
|
struct iqs269_sys_reg *sys_reg = &iqs269->sys_reg; |
|
struct iqs269_ch_reg *ch_reg; |
|
unsigned int val; |
|
int error, i; |
|
|
|
mutex_lock(&iqs269->lock); |
|
|
|
error = regmap_update_bits(iqs269->regmap, IQS269_HALL_UI, |
|
IQS269_HALL_UI_ENABLE, |
|
iqs269->hall_enable ? ~0 : 0); |
|
if (error) |
|
goto err_mutex; |
|
|
|
for (i = 0; i < IQS269_NUM_CH; i++) { |
|
if (!(sys_reg->active & BIT(i))) |
|
continue; |
|
|
|
ch_reg = &iqs269->ch_reg[i]; |
|
|
|
error = regmap_raw_write(iqs269->regmap, |
|
IQS269_CHx_SETTINGS + i * |
|
sizeof(*ch_reg) / 2, ch_reg, |
|
sizeof(*ch_reg)); |
|
if (error) |
|
goto err_mutex; |
|
} |
|
|
|
/* |
|
* The REDO-ATI and ATI channel selection fields must be written in the |
|
* same block write, so every field between registers 0x80 through 0x8B |
|
* (inclusive) must be written as well. |
|
*/ |
|
error = regmap_raw_write(iqs269->regmap, IQS269_SYS_SETTINGS, sys_reg, |
|
sizeof(*sys_reg)); |
|
if (error) |
|
goto err_mutex; |
|
|
|
error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val, |
|
!(val & IQS269_SYS_FLAGS_IN_ATI), |
|
IQS269_ATI_POLL_SLEEP_US, |
|
IQS269_ATI_POLL_TIMEOUT_US); |
|
if (error) |
|
goto err_mutex; |
|
|
|
msleep(IQS269_ATI_STABLE_DELAY_MS); |
|
iqs269->ati_current = true; |
|
|
|
err_mutex: |
|
mutex_unlock(&iqs269->lock); |
|
|
|
return error; |
|
} |
|
|
|
static int iqs269_input_init(struct iqs269_private *iqs269) |
|
{ |
|
struct i2c_client *client = iqs269->client; |
|
struct iqs269_flags flags; |
|
unsigned int sw_code, keycode; |
|
int error, i, j; |
|
u8 dir_mask, state; |
|
|
|
iqs269->keypad = devm_input_allocate_device(&client->dev); |
|
if (!iqs269->keypad) |
|
return -ENOMEM; |
|
|
|
iqs269->keypad->keycodemax = ARRAY_SIZE(iqs269->keycode); |
|
iqs269->keypad->keycode = iqs269->keycode; |
|
iqs269->keypad->keycodesize = sizeof(*iqs269->keycode); |
|
|
|
iqs269->keypad->name = "iqs269a_keypad"; |
|
iqs269->keypad->id.bustype = BUS_I2C; |
|
|
|
if (iqs269->hall_enable) { |
|
error = regmap_raw_read(iqs269->regmap, IQS269_SYS_FLAGS, |
|
&flags, sizeof(flags)); |
|
if (error) { |
|
dev_err(&client->dev, |
|
"Failed to read initial status: %d\n", error); |
|
return error; |
|
} |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(iqs269_events); i++) { |
|
dir_mask = flags.states[IQS269_ST_OFFS_DIR]; |
|
if (!iqs269_events[i].dir_up) |
|
dir_mask = ~dir_mask; |
|
|
|
state = flags.states[iqs269_events[i].st_offs] & dir_mask; |
|
|
|
sw_code = iqs269->switches[i].code; |
|
|
|
for (j = 0; j < IQS269_NUM_CH; j++) { |
|
keycode = iqs269->keycode[i * IQS269_NUM_CH + j]; |
|
|
|
/* |
|
* Hall-effect sensing repurposes a pair of dedicated |
|
* channels, only one of which reports events. |
|
*/ |
|
switch (j) { |
|
case IQS269_CHx_HALL_ACTIVE: |
|
if (iqs269->hall_enable && |
|
iqs269->switches[i].enabled) { |
|
input_set_capability(iqs269->keypad, |
|
EV_SW, sw_code); |
|
input_report_switch(iqs269->keypad, |
|
sw_code, |
|
state & BIT(j)); |
|
} |
|
fallthrough; |
|
|
|
case IQS269_CHx_HALL_INACTIVE: |
|
if (iqs269->hall_enable) |
|
continue; |
|
fallthrough; |
|
|
|
default: |
|
if (keycode != KEY_RESERVED) |
|
input_set_capability(iqs269->keypad, |
|
EV_KEY, keycode); |
|
} |
|
} |
|
} |
|
|
|
input_sync(iqs269->keypad); |
|
|
|
error = input_register_device(iqs269->keypad); |
|
if (error) { |
|
dev_err(&client->dev, "Failed to register keypad: %d\n", error); |
|
return error; |
|
} |
|
|
|
for (i = 0; i < IQS269_NUM_SL; i++) { |
|
if (!iqs269->sys_reg.slider_select[i]) |
|
continue; |
|
|
|
iqs269->slider[i] = devm_input_allocate_device(&client->dev); |
|
if (!iqs269->slider[i]) |
|
return -ENOMEM; |
|
|
|
iqs269->slider[i]->name = i ? "iqs269a_slider_1" |
|
: "iqs269a_slider_0"; |
|
iqs269->slider[i]->id.bustype = BUS_I2C; |
|
|
|
input_set_capability(iqs269->slider[i], EV_KEY, BTN_TOUCH); |
|
input_set_abs_params(iqs269->slider[i], ABS_X, 0, 255, 0, 0); |
|
|
|
error = input_register_device(iqs269->slider[i]); |
|
if (error) { |
|
dev_err(&client->dev, |
|
"Failed to register slider %d: %d\n", i, error); |
|
return error; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int iqs269_report(struct iqs269_private *iqs269) |
|
{ |
|
struct i2c_client *client = iqs269->client; |
|
struct iqs269_flags flags; |
|
unsigned int sw_code, keycode; |
|
int error, i, j; |
|
u8 slider_x[IQS269_NUM_SL]; |
|
u8 dir_mask, state; |
|
|
|
error = regmap_raw_read(iqs269->regmap, IQS269_SYS_FLAGS, &flags, |
|
sizeof(flags)); |
|
if (error) { |
|
dev_err(&client->dev, "Failed to read device status: %d\n", |
|
error); |
|
return error; |
|
} |
|
|
|
/* |
|
* The device resets itself if its own watchdog bites, which can happen |
|
* in the event of an I2C communication error. In this case, the device |
|
* asserts a SHOW_RESET interrupt and all registers must be restored. |
|
*/ |
|
if (be16_to_cpu(flags.system) & IQS269_SYS_FLAGS_SHOW_RESET) { |
|
dev_err(&client->dev, "Unexpected device reset\n"); |
|
|
|
error = iqs269_dev_init(iqs269); |
|
if (error) |
|
dev_err(&client->dev, |
|
"Failed to re-initialize device: %d\n", error); |
|
|
|
return error; |
|
} |
|
|
|
error = regmap_raw_read(iqs269->regmap, IQS269_SLIDER_X, slider_x, |
|
sizeof(slider_x)); |
|
if (error) { |
|
dev_err(&client->dev, "Failed to read slider position: %d\n", |
|
error); |
|
return error; |
|
} |
|
|
|
for (i = 0; i < IQS269_NUM_SL; i++) { |
|
if (!iqs269->sys_reg.slider_select[i]) |
|
continue; |
|
|
|
/* |
|
* Report BTN_TOUCH if any channel that participates in the |
|
* slider is in a state of touch. |
|
*/ |
|
if (flags.states[IQS269_ST_OFFS_TOUCH] & |
|
iqs269->sys_reg.slider_select[i]) { |
|
input_report_key(iqs269->slider[i], BTN_TOUCH, 1); |
|
input_report_abs(iqs269->slider[i], ABS_X, slider_x[i]); |
|
} else { |
|
input_report_key(iqs269->slider[i], BTN_TOUCH, 0); |
|
} |
|
|
|
input_sync(iqs269->slider[i]); |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(iqs269_events); i++) { |
|
dir_mask = flags.states[IQS269_ST_OFFS_DIR]; |
|
if (!iqs269_events[i].dir_up) |
|
dir_mask = ~dir_mask; |
|
|
|
state = flags.states[iqs269_events[i].st_offs] & dir_mask; |
|
|
|
sw_code = iqs269->switches[i].code; |
|
|
|
for (j = 0; j < IQS269_NUM_CH; j++) { |
|
keycode = iqs269->keycode[i * IQS269_NUM_CH + j]; |
|
|
|
switch (j) { |
|
case IQS269_CHx_HALL_ACTIVE: |
|
if (iqs269->hall_enable && |
|
iqs269->switches[i].enabled) |
|
input_report_switch(iqs269->keypad, |
|
sw_code, |
|
state & BIT(j)); |
|
fallthrough; |
|
|
|
case IQS269_CHx_HALL_INACTIVE: |
|
if (iqs269->hall_enable) |
|
continue; |
|
fallthrough; |
|
|
|
default: |
|
input_report_key(iqs269->keypad, keycode, |
|
state & BIT(j)); |
|
} |
|
} |
|
} |
|
|
|
input_sync(iqs269->keypad); |
|
|
|
return 0; |
|
} |
|
|
|
static irqreturn_t iqs269_irq(int irq, void *context) |
|
{ |
|
struct iqs269_private *iqs269 = context; |
|
|
|
if (iqs269_report(iqs269)) |
|
return IRQ_NONE; |
|
|
|
/* |
|
* The device does not deassert its interrupt (RDY) pin until shortly |
|
* after receiving an I2C stop condition; the following delay ensures |
|
* the interrupt handler does not return before this time. |
|
*/ |
|
iqs269_irq_wait(); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static ssize_t counts_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
struct i2c_client *client = iqs269->client; |
|
__le16 counts; |
|
int error; |
|
|
|
if (!iqs269->ati_current || iqs269->hall_enable) |
|
return -EPERM; |
|
|
|
/* |
|
* Unsolicited I2C communication prompts the device to assert its RDY |
|
* pin, so disable the interrupt line until the operation is finished |
|
* and RDY has been deasserted. |
|
*/ |
|
disable_irq(client->irq); |
|
|
|
error = regmap_raw_read(iqs269->regmap, |
|
IQS269_CHx_COUNTS + iqs269->ch_num * 2, |
|
&counts, sizeof(counts)); |
|
|
|
iqs269_irq_wait(); |
|
enable_irq(client->irq); |
|
|
|
if (error) |
|
return error; |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", le16_to_cpu(counts)); |
|
} |
|
|
|
static ssize_t hall_bin_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
struct i2c_client *client = iqs269->client; |
|
unsigned int val; |
|
int error; |
|
|
|
disable_irq(client->irq); |
|
|
|
error = regmap_read(iqs269->regmap, IQS269_CAL_DATA_A, &val); |
|
|
|
iqs269_irq_wait(); |
|
enable_irq(client->irq); |
|
|
|
if (error) |
|
return error; |
|
|
|
switch (iqs269->ch_reg[IQS269_CHx_HALL_ACTIVE].rx_enable & |
|
iqs269->ch_reg[IQS269_CHx_HALL_INACTIVE].rx_enable) { |
|
case IQS269_HALL_PAD_R: |
|
val &= IQS269_CAL_DATA_A_HALL_BIN_R_MASK; |
|
val >>= IQS269_CAL_DATA_A_HALL_BIN_R_SHIFT; |
|
break; |
|
|
|
case IQS269_HALL_PAD_L: |
|
val &= IQS269_CAL_DATA_A_HALL_BIN_L_MASK; |
|
val >>= IQS269_CAL_DATA_A_HALL_BIN_L_SHIFT; |
|
break; |
|
|
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", val); |
|
} |
|
|
|
static ssize_t hall_enable_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", iqs269->hall_enable); |
|
} |
|
|
|
static ssize_t hall_enable_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
mutex_lock(&iqs269->lock); |
|
|
|
iqs269->hall_enable = val; |
|
iqs269->ati_current = false; |
|
|
|
mutex_unlock(&iqs269->lock); |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t ch_number_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", iqs269->ch_num); |
|
} |
|
|
|
static ssize_t ch_number_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
if (val >= IQS269_NUM_CH) |
|
return -EINVAL; |
|
|
|
iqs269->ch_num = val; |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t rx_enable_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", |
|
iqs269->ch_reg[iqs269->ch_num].rx_enable); |
|
} |
|
|
|
static ssize_t rx_enable_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
if (val > 0xFF) |
|
return -EINVAL; |
|
|
|
mutex_lock(&iqs269->lock); |
|
|
|
iqs269->ch_reg[iqs269->ch_num].rx_enable = val; |
|
iqs269->ati_current = false; |
|
|
|
mutex_unlock(&iqs269->lock); |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t ati_mode_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = iqs269_ati_mode_get(iqs269, iqs269->ch_num, &val); |
|
if (error) |
|
return error; |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", val); |
|
} |
|
|
|
static ssize_t ati_mode_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
error = iqs269_ati_mode_set(iqs269, iqs269->ch_num, val); |
|
if (error) |
|
return error; |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t ati_base_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = iqs269_ati_base_get(iqs269, iqs269->ch_num, &val); |
|
if (error) |
|
return error; |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", val); |
|
} |
|
|
|
static ssize_t ati_base_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
error = iqs269_ati_base_set(iqs269, iqs269->ch_num, val); |
|
if (error) |
|
return error; |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t ati_target_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = iqs269_ati_target_get(iqs269, iqs269->ch_num, &val); |
|
if (error) |
|
return error; |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", val); |
|
} |
|
|
|
static ssize_t ati_target_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
error = iqs269_ati_target_set(iqs269, iqs269->ch_num, val); |
|
if (error) |
|
return error; |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t ati_trigger_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", iqs269->ati_current); |
|
} |
|
|
|
static ssize_t ati_trigger_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
struct i2c_client *client = iqs269->client; |
|
unsigned int val; |
|
int error; |
|
|
|
error = kstrtouint(buf, 10, &val); |
|
if (error) |
|
return error; |
|
|
|
if (!val) |
|
return count; |
|
|
|
disable_irq(client->irq); |
|
|
|
error = iqs269_dev_init(iqs269); |
|
|
|
iqs269_irq_wait(); |
|
enable_irq(client->irq); |
|
|
|
if (error) |
|
return error; |
|
|
|
return count; |
|
} |
|
|
|
static DEVICE_ATTR_RO(counts); |
|
static DEVICE_ATTR_RO(hall_bin); |
|
static DEVICE_ATTR_RW(hall_enable); |
|
static DEVICE_ATTR_RW(ch_number); |
|
static DEVICE_ATTR_RW(rx_enable); |
|
static DEVICE_ATTR_RW(ati_mode); |
|
static DEVICE_ATTR_RW(ati_base); |
|
static DEVICE_ATTR_RW(ati_target); |
|
static DEVICE_ATTR_RW(ati_trigger); |
|
|
|
static struct attribute *iqs269_attrs[] = { |
|
&dev_attr_counts.attr, |
|
&dev_attr_hall_bin.attr, |
|
&dev_attr_hall_enable.attr, |
|
&dev_attr_ch_number.attr, |
|
&dev_attr_rx_enable.attr, |
|
&dev_attr_ati_mode.attr, |
|
&dev_attr_ati_base.attr, |
|
&dev_attr_ati_target.attr, |
|
&dev_attr_ati_trigger.attr, |
|
NULL, |
|
}; |
|
|
|
static const struct attribute_group iqs269_attr_group = { |
|
.attrs = iqs269_attrs, |
|
}; |
|
|
|
static const struct regmap_config iqs269_regmap_config = { |
|
.reg_bits = 8, |
|
.val_bits = 16, |
|
.max_register = IQS269_MAX_REG, |
|
}; |
|
|
|
static int iqs269_probe(struct i2c_client *client) |
|
{ |
|
struct iqs269_ver_info ver_info; |
|
struct iqs269_private *iqs269; |
|
int error; |
|
|
|
iqs269 = devm_kzalloc(&client->dev, sizeof(*iqs269), GFP_KERNEL); |
|
if (!iqs269) |
|
return -ENOMEM; |
|
|
|
i2c_set_clientdata(client, iqs269); |
|
iqs269->client = client; |
|
|
|
iqs269->regmap = devm_regmap_init_i2c(client, &iqs269_regmap_config); |
|
if (IS_ERR(iqs269->regmap)) { |
|
error = PTR_ERR(iqs269->regmap); |
|
dev_err(&client->dev, "Failed to initialize register map: %d\n", |
|
error); |
|
return error; |
|
} |
|
|
|
mutex_init(&iqs269->lock); |
|
|
|
error = regmap_raw_read(iqs269->regmap, IQS269_VER_INFO, &ver_info, |
|
sizeof(ver_info)); |
|
if (error) |
|
return error; |
|
|
|
if (ver_info.prod_num != IQS269_VER_INFO_PROD_NUM) { |
|
dev_err(&client->dev, "Unrecognized product number: 0x%02X\n", |
|
ver_info.prod_num); |
|
return -EINVAL; |
|
} |
|
|
|
error = iqs269_parse_prop(iqs269); |
|
if (error) |
|
return error; |
|
|
|
error = iqs269_dev_init(iqs269); |
|
if (error) { |
|
dev_err(&client->dev, "Failed to initialize device: %d\n", |
|
error); |
|
return error; |
|
} |
|
|
|
error = iqs269_input_init(iqs269); |
|
if (error) |
|
return error; |
|
|
|
error = devm_request_threaded_irq(&client->dev, client->irq, |
|
NULL, iqs269_irq, IRQF_ONESHOT, |
|
client->name, iqs269); |
|
if (error) { |
|
dev_err(&client->dev, "Failed to request IRQ: %d\n", error); |
|
return error; |
|
} |
|
|
|
error = devm_device_add_group(&client->dev, &iqs269_attr_group); |
|
if (error) |
|
dev_err(&client->dev, "Failed to add attributes: %d\n", error); |
|
|
|
return error; |
|
} |
|
|
|
static int __maybe_unused iqs269_suspend(struct device *dev) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
struct i2c_client *client = iqs269->client; |
|
unsigned int val; |
|
int error; |
|
|
|
if (!iqs269->suspend_mode) |
|
return 0; |
|
|
|
disable_irq(client->irq); |
|
|
|
/* |
|
* Automatic power mode switching must be disabled before the device is |
|
* forced into any particular power mode. In this case, the device will |
|
* transition into normal-power mode. |
|
*/ |
|
error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS, |
|
IQS269_SYS_SETTINGS_DIS_AUTO, ~0); |
|
if (error) |
|
goto err_irq; |
|
|
|
/* |
|
* The following check ensures the device has completed its transition |
|
* into normal-power mode before a manual mode switch is performed. |
|
*/ |
|
error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val, |
|
!(val & IQS269_SYS_FLAGS_PWR_MODE_MASK), |
|
IQS269_PWR_MODE_POLL_SLEEP_US, |
|
IQS269_PWR_MODE_POLL_TIMEOUT_US); |
|
if (error) |
|
goto err_irq; |
|
|
|
error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS, |
|
IQS269_SYS_SETTINGS_PWR_MODE_MASK, |
|
iqs269->suspend_mode << |
|
IQS269_SYS_SETTINGS_PWR_MODE_SHIFT); |
|
if (error) |
|
goto err_irq; |
|
|
|
/* |
|
* This last check ensures the device has completed its transition into |
|
* the desired power mode to prevent any spurious interrupts from being |
|
* triggered after iqs269_suspend has already returned. |
|
*/ |
|
error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val, |
|
(val & IQS269_SYS_FLAGS_PWR_MODE_MASK) |
|
== (iqs269->suspend_mode << |
|
IQS269_SYS_FLAGS_PWR_MODE_SHIFT), |
|
IQS269_PWR_MODE_POLL_SLEEP_US, |
|
IQS269_PWR_MODE_POLL_TIMEOUT_US); |
|
|
|
err_irq: |
|
iqs269_irq_wait(); |
|
enable_irq(client->irq); |
|
|
|
return error; |
|
} |
|
|
|
static int __maybe_unused iqs269_resume(struct device *dev) |
|
{ |
|
struct iqs269_private *iqs269 = dev_get_drvdata(dev); |
|
struct i2c_client *client = iqs269->client; |
|
unsigned int val; |
|
int error; |
|
|
|
if (!iqs269->suspend_mode) |
|
return 0; |
|
|
|
disable_irq(client->irq); |
|
|
|
error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS, |
|
IQS269_SYS_SETTINGS_PWR_MODE_MASK, 0); |
|
if (error) |
|
goto err_irq; |
|
|
|
/* |
|
* This check ensures the device has returned to normal-power mode |
|
* before automatic power mode switching is re-enabled. |
|
*/ |
|
error = regmap_read_poll_timeout(iqs269->regmap, IQS269_SYS_FLAGS, val, |
|
!(val & IQS269_SYS_FLAGS_PWR_MODE_MASK), |
|
IQS269_PWR_MODE_POLL_SLEEP_US, |
|
IQS269_PWR_MODE_POLL_TIMEOUT_US); |
|
if (error) |
|
goto err_irq; |
|
|
|
error = regmap_update_bits(iqs269->regmap, IQS269_SYS_SETTINGS, |
|
IQS269_SYS_SETTINGS_DIS_AUTO, 0); |
|
if (error) |
|
goto err_irq; |
|
|
|
/* |
|
* This step reports any events that may have been "swallowed" as a |
|
* result of polling PWR_MODE (which automatically acknowledges any |
|
* pending interrupts). |
|
*/ |
|
error = iqs269_report(iqs269); |
|
|
|
err_irq: |
|
iqs269_irq_wait(); |
|
enable_irq(client->irq); |
|
|
|
return error; |
|
} |
|
|
|
static SIMPLE_DEV_PM_OPS(iqs269_pm, iqs269_suspend, iqs269_resume); |
|
|
|
static const struct of_device_id iqs269_of_match[] = { |
|
{ .compatible = "azoteq,iqs269a" }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, iqs269_of_match); |
|
|
|
static struct i2c_driver iqs269_i2c_driver = { |
|
.driver = { |
|
.name = "iqs269a", |
|
.of_match_table = iqs269_of_match, |
|
.pm = &iqs269_pm, |
|
}, |
|
.probe_new = iqs269_probe, |
|
}; |
|
module_i2c_driver(iqs269_i2c_driver); |
|
|
|
MODULE_AUTHOR("Jeff LaBundy <[email protected]>"); |
|
MODULE_DESCRIPTION("Azoteq IQS269A Capacitive Touch Controller"); |
|
MODULE_LICENSE("GPL");
|
|
|