Input: add support for Azoteq IQS7210A/7211A/E

Add support for the Azoteq IQS7210A/7211A/E family of trackpad/
touchscreen controllers.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/ZHVEeDlYyr69A59K@nixie71
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

3 files changed, 2580 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index fb4c23917b69..e3e2324547b9 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -1365,6 +1365,16 @@ config TOUCHSCREEN_IQS5XX
 	  To compile this driver as a module, choose M here: the
 	  module will be called iqs5xx.
 
+config TOUCHSCREEN_IQS7211
+	tristate "Azoteq IQS7210A/7211A/E trackpad/touchscreen controller"
+	depends on I2C
+	help
+	  Say Y to enable support for the Azoteq IQS7210A/7211A/E
+	  family of trackpad/touchscreen controllers.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called iqs7211.
+
 config TOUCHSCREEN_ZINITIX
 	tristate "Zinitix touchscreen support"
 	depends on I2C
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 159cd5136fdb..62bd24f3ac8e 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -115,5 +115,6 @@ obj-$(CONFIG_TOUCHSCREEN_COLIBRI_VF50)	+= colibri-vf50-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023)	+= rohm_bu21023.o
 obj-$(CONFIG_TOUCHSCREEN_RASPBERRYPI_FW)	+= raspberrypi-ts.o
 obj-$(CONFIG_TOUCHSCREEN_IQS5XX)	+= iqs5xx.o
+obj-$(CONFIG_TOUCHSCREEN_IQS7211)	+= iqs7211.o
 obj-$(CONFIG_TOUCHSCREEN_ZINITIX)	+= zinitix.o
 obj-$(CONFIG_TOUCHSCREEN_HIMAX_HX83112B)	+= himax_hx83112b.o
diff --git a/drivers/input/touchscreen/iqs7211.c b/drivers/input/touchscreen/iqs7211.c
new file mode 100644
index 000000000000..f60316d37f45
--- /dev/null
+++ b/drivers/input/touchscreen/iqs7211.c
@@ -0,0 +1,2569 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Azoteq IQS7210A/7211A/E Trackpad/Touchscreen Controller
+ *
+ * Copyright (C) 2023 Jeff LaBundy <jeff@labundy.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/interrupt.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+#define IQS7211_PROD_NUM			0x00
+
+#define IQS7211_EVENT_MASK_ALL			GENMASK(14, 8)
+#define IQS7211_EVENT_MASK_ALP			BIT(13)
+#define IQS7211_EVENT_MASK_BTN			BIT(12)
+#define IQS7211_EVENT_MASK_ATI			BIT(11)
+#define IQS7211_EVENT_MASK_MOVE			BIT(10)
+#define IQS7211_EVENT_MASK_GSTR			BIT(9)
+#define IQS7211_EVENT_MODE			BIT(8)
+
+#define IQS7211_COMMS_ERROR			0xEEEE
+#define IQS7211_COMMS_RETRY_MS			50
+#define IQS7211_COMMS_SLEEP_US			100
+#define IQS7211_COMMS_TIMEOUT_US		(100 * USEC_PER_MSEC)
+#define IQS7211_RESET_TIMEOUT_MS		150
+#define IQS7211_START_TIMEOUT_US		(1 * USEC_PER_SEC)
+
+#define IQS7211_NUM_RETRIES			5
+#define IQS7211_NUM_CRX				8
+#define IQS7211_MAX_CTX				13
+
+#define IQS7211_MAX_CONTACTS			2
+#define IQS7211_MAX_CYCLES			21
+
+/*
+ * The following delay is used during instances that must wait for the open-
+ * drain RDY pin to settle. Its value is calculated as 5*R*C, where R and C
+ * represent typical datasheet values of 4.7k and 100 nF, respectively.
+ */
+#define iqs7211_irq_wait()			usleep_range(2500, 2600)
+
+enum iqs7211_dev_id {
+	IQS7210A,
+	IQS7211A,
+	IQS7211E,
+};
+
+enum iqs7211_comms_mode {
+	IQS7211_COMMS_MODE_WAIT,
+	IQS7211_COMMS_MODE_FREE,
+	IQS7211_COMMS_MODE_FORCE,
+};
+
+struct iqs7211_reg_field_desc {
+	struct list_head list;
+	u8 addr;
+	u16 mask;
+	u16 val;
+};
+
+enum iqs7211_reg_key_id {
+	IQS7211_REG_KEY_NONE,
+	IQS7211_REG_KEY_PROX,
+	IQS7211_REG_KEY_TOUCH,
+	IQS7211_REG_KEY_TAP,
+	IQS7211_REG_KEY_HOLD,
+	IQS7211_REG_KEY_PALM,
+	IQS7211_REG_KEY_AXIAL_X,
+	IQS7211_REG_KEY_AXIAL_Y,
+	IQS7211_REG_KEY_RESERVED
+};
+
+enum iqs7211_reg_grp_id {
+	IQS7211_REG_GRP_TP,
+	IQS7211_REG_GRP_BTN,
+	IQS7211_REG_GRP_ALP,
+	IQS7211_REG_GRP_SYS,
+	IQS7211_NUM_REG_GRPS
+};
+
+static const char * const iqs7211_reg_grp_names[IQS7211_NUM_REG_GRPS] = {
+	[IQS7211_REG_GRP_TP] = "trackpad",
+	[IQS7211_REG_GRP_BTN] = "button",
+	[IQS7211_REG_GRP_ALP] = "alp",
+};
+
+static const u16 iqs7211_reg_grp_masks[IQS7211_NUM_REG_GRPS] = {
+	[IQS7211_REG_GRP_TP] = IQS7211_EVENT_MASK_GSTR,
+	[IQS7211_REG_GRP_BTN] = IQS7211_EVENT_MASK_BTN,
+	[IQS7211_REG_GRP_ALP] = IQS7211_EVENT_MASK_ALP,
+};
+
+struct iqs7211_event_desc {
+	const char *name;
+	u16 mask;
+	u16 enable;
+	enum iqs7211_reg_grp_id reg_grp;
+	enum iqs7211_reg_key_id reg_key;
+};
+
+static const struct iqs7211_event_desc iqs7210a_kp_events[] = {
+	{
+		.mask = BIT(10),
+		.enable = BIT(13) | BIT(12),
+		.reg_grp = IQS7211_REG_GRP_ALP,
+	},
+	{
+		.name = "event-prox",
+		.mask = BIT(2),
+		.enable = BIT(5) | BIT(4),
+		.reg_grp = IQS7211_REG_GRP_BTN,
+		.reg_key = IQS7211_REG_KEY_PROX,
+	},
+	{
+		.name = "event-touch",
+		.mask = BIT(3),
+		.enable = BIT(5) | BIT(4),
+		.reg_grp = IQS7211_REG_GRP_BTN,
+		.reg_key = IQS7211_REG_KEY_TOUCH,
+	},
+	{
+		.name = "event-tap",
+		.mask = BIT(0),
+		.enable = BIT(0),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_TAP,
+	},
+	{
+		.name = "event-hold",
+		.mask = BIT(1),
+		.enable = BIT(1),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+	{
+		.name = "event-swipe-x-neg",
+		.mask = BIT(2),
+		.enable = BIT(2),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+	},
+	{
+		.name = "event-swipe-x-pos",
+		.mask = BIT(3),
+		.enable = BIT(3),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+	},
+	{
+		.name = "event-swipe-y-pos",
+		.mask = BIT(4),
+		.enable = BIT(4),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+	},
+	{
+		.name = "event-swipe-y-neg",
+		.mask = BIT(5),
+		.enable = BIT(5),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+	},
+};
+
+static const struct iqs7211_event_desc iqs7211a_kp_events[] = {
+	{
+		.mask = BIT(14),
+		.reg_grp = IQS7211_REG_GRP_ALP,
+	},
+	{
+		.name = "event-tap",
+		.mask = BIT(0),
+		.enable = BIT(0),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_TAP,
+	},
+	{
+		.name = "event-hold",
+		.mask = BIT(1),
+		.enable = BIT(1),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+	{
+		.name = "event-swipe-x-neg",
+		.mask = BIT(2),
+		.enable = BIT(2),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+	},
+	{
+		.name = "event-swipe-x-pos",
+		.mask = BIT(3),
+		.enable = BIT(3),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+	},
+	{
+		.name = "event-swipe-y-pos",
+		.mask = BIT(4),
+		.enable = BIT(4),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+	},
+	{
+		.name = "event-swipe-y-neg",
+		.mask = BIT(5),
+		.enable = BIT(5),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+	},
+};
+
+static const struct iqs7211_event_desc iqs7211e_kp_events[] = {
+	{
+		.mask = BIT(14),
+		.reg_grp = IQS7211_REG_GRP_ALP,
+	},
+	{
+		.name = "event-tap",
+		.mask = BIT(0),
+		.enable = BIT(0),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_TAP,
+	},
+	{
+		.name = "event-tap-double",
+		.mask = BIT(1),
+		.enable = BIT(1),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_TAP,
+	},
+	{
+		.name = "event-tap-triple",
+		.mask = BIT(2),
+		.enable = BIT(2),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_TAP,
+	},
+	{
+		.name = "event-hold",
+		.mask = BIT(3),
+		.enable = BIT(3),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+	{
+		.name = "event-palm",
+		.mask = BIT(4),
+		.enable = BIT(4),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_PALM,
+	},
+	{
+		.name = "event-swipe-x-pos",
+		.mask = BIT(8),
+		.enable = BIT(8),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+	},
+	{
+		.name = "event-swipe-x-neg",
+		.mask = BIT(9),
+		.enable = BIT(9),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+	},
+	{
+		.name = "event-swipe-y-pos",
+		.mask = BIT(10),
+		.enable = BIT(10),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+	},
+	{
+		.name = "event-swipe-y-neg",
+		.mask = BIT(11),
+		.enable = BIT(11),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+	},
+	{
+		.name = "event-swipe-x-pos-hold",
+		.mask = BIT(12),
+		.enable = BIT(12),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+	{
+		.name = "event-swipe-x-neg-hold",
+		.mask = BIT(13),
+		.enable = BIT(13),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+	{
+		.name = "event-swipe-y-pos-hold",
+		.mask = BIT(14),
+		.enable = BIT(14),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+	{
+		.name = "event-swipe-y-neg-hold",
+		.mask = BIT(15),
+		.enable = BIT(15),
+		.reg_grp = IQS7211_REG_GRP_TP,
+		.reg_key = IQS7211_REG_KEY_HOLD,
+	},
+};
+
+struct iqs7211_dev_desc {
+	const char *tp_name;
+	const char *kp_name;
+	u16 prod_num;
+	u16 show_reset;
+	u16 ati_error[IQS7211_NUM_REG_GRPS];
+	u16 ati_start[IQS7211_NUM_REG_GRPS];
+	u16 suspend;
+	u16 ack_reset;
+	u16 comms_end;
+	u16 comms_req;
+	int charge_shift;
+	int info_offs;
+	int gesture_offs;
+	int contact_offs;
+	u8 sys_stat;
+	u8 sys_ctrl;
+	u8 alp_config;
+	u8 tp_config;
+	u8 exp_file;
+	u8 kp_enable[IQS7211_NUM_REG_GRPS];
+	u8 gesture_angle;
+	u8 rx_tx_map;
+	u8 cycle_alloc[2];
+	u8 cycle_limit[2];
+	const struct iqs7211_event_desc *kp_events;
+	int num_kp_events;
+	int min_crx_alp;
+	int num_ctx;
+};
+
+static const struct iqs7211_dev_desc iqs7211_devs[] = {
+	[IQS7210A] = {
+		.tp_name = "iqs7210a_trackpad",
+		.kp_name = "iqs7210a_keys",
+		.prod_num = 944,
+		.show_reset = BIT(15),
+		.ati_error = {
+			[IQS7211_REG_GRP_TP] = BIT(12),
+			[IQS7211_REG_GRP_BTN] = BIT(0),
+			[IQS7211_REG_GRP_ALP] = BIT(8),
+		},
+		.ati_start = {
+			[IQS7211_REG_GRP_TP] = BIT(13),
+			[IQS7211_REG_GRP_BTN] = BIT(1),
+			[IQS7211_REG_GRP_ALP] = BIT(9),
+		},
+		.suspend = BIT(11),
+		.ack_reset = BIT(7),
+		.comms_end = BIT(2),
+		.comms_req = BIT(1),
+		.charge_shift = 4,
+		.info_offs = 0,
+		.gesture_offs = 1,
+		.contact_offs = 4,
+		.sys_stat = 0x0A,
+		.sys_ctrl = 0x35,
+		.alp_config = 0x39,
+		.tp_config = 0x4E,
+		.exp_file = 0x57,
+		.kp_enable = {
+			[IQS7211_REG_GRP_TP] = 0x58,
+			[IQS7211_REG_GRP_BTN] = 0x37,
+			[IQS7211_REG_GRP_ALP] = 0x37,
+		},
+		.gesture_angle = 0x5F,
+		.rx_tx_map = 0x60,
+		.cycle_alloc = { 0x66, 0x75, },
+		.cycle_limit = { 10, 6, },
+		.kp_events = iqs7210a_kp_events,
+		.num_kp_events = ARRAY_SIZE(iqs7210a_kp_events),
+		.min_crx_alp = 4,
+		.num_ctx = IQS7211_MAX_CTX - 1,
+	},
+	[IQS7211A] = {
+		.tp_name = "iqs7211a_trackpad",
+		.kp_name = "iqs7211a_keys",
+		.prod_num = 763,
+		.show_reset = BIT(7),
+		.ati_error = {
+			[IQS7211_REG_GRP_TP] = BIT(3),
+			[IQS7211_REG_GRP_ALP] = BIT(5),
+		},
+		.ati_start = {
+			[IQS7211_REG_GRP_TP] = BIT(5),
+			[IQS7211_REG_GRP_ALP] = BIT(6),
+		},
+		.ack_reset = BIT(7),
+		.comms_req = BIT(4),
+		.charge_shift = 0,
+		.info_offs = 0,
+		.gesture_offs = 1,
+		.contact_offs = 4,
+		.sys_stat = 0x10,
+		.sys_ctrl = 0x50,
+		.tp_config = 0x60,
+		.alp_config = 0x72,
+		.exp_file = 0x74,
+		.kp_enable = {
+			[IQS7211_REG_GRP_TP] = 0x80,
+		},
+		.gesture_angle = 0x87,
+		.rx_tx_map = 0x90,
+		.cycle_alloc = { 0xA0, 0xB0, },
+		.cycle_limit = { 10, 8, },
+		.kp_events = iqs7211a_kp_events,
+		.num_kp_events = ARRAY_SIZE(iqs7211a_kp_events),
+		.num_ctx = IQS7211_MAX_CTX - 1,
+	},
+	[IQS7211E] = {
+		.tp_name = "iqs7211e_trackpad",
+		.kp_name = "iqs7211e_keys",
+		.prod_num = 1112,
+		.show_reset = BIT(7),
+		.ati_error = {
+			[IQS7211_REG_GRP_TP] = BIT(3),
+			[IQS7211_REG_GRP_ALP] = BIT(5),
+		},
+		.ati_start = {
+			[IQS7211_REG_GRP_TP] = BIT(5),
+			[IQS7211_REG_GRP_ALP] = BIT(6),
+		},
+		.suspend = BIT(11),
+		.ack_reset = BIT(7),
+		.comms_end = BIT(6),
+		.comms_req = BIT(4),
+		.charge_shift = 0,
+		.info_offs = 1,
+		.gesture_offs = 0,
+		.contact_offs = 2,
+		.sys_stat = 0x0E,
+		.sys_ctrl = 0x33,
+		.tp_config = 0x41,
+		.alp_config = 0x36,
+		.exp_file = 0x4A,
+		.kp_enable = {
+			[IQS7211_REG_GRP_TP] = 0x4B,
+		},
+		.gesture_angle = 0x55,
+		.rx_tx_map = 0x56,
+		.cycle_alloc = { 0x5D, 0x6C, },
+		.cycle_limit = { 10, 11, },
+		.kp_events = iqs7211e_kp_events,
+		.num_kp_events = ARRAY_SIZE(iqs7211e_kp_events),
+		.num_ctx = IQS7211_MAX_CTX,
+	},
+};
+
+struct iqs7211_prop_desc {
+	const char *name;
+	enum iqs7211_reg_key_id reg_key;
+	u8 reg_addr[IQS7211_NUM_REG_GRPS][ARRAY_SIZE(iqs7211_devs)];
+	int reg_shift;
+	int reg_width;
+	int val_pitch;
+	int val_min;
+	int val_max;
+	const char *label;
+};
+
+static const struct iqs7211_prop_desc iqs7211_props[] = {
+	{
+		.name = "azoteq,ati-frac-div-fine",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x1E,
+				[IQS7211A] = 0x30,
+				[IQS7211E] = 0x21,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x22,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x23,
+				[IQS7211A] = 0x36,
+				[IQS7211E] = 0x25,
+			},
+		},
+		.reg_shift = 9,
+		.reg_width = 5,
+		.label = "ATI fine fractional divider",
+	},
+	{
+		.name = "azoteq,ati-frac-mult-coarse",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x1E,
+				[IQS7211A] = 0x30,
+				[IQS7211E] = 0x21,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x22,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x23,
+				[IQS7211A] = 0x36,
+				[IQS7211E] = 0x25,
+			},
+		},
+		.reg_shift = 5,
+		.reg_width = 4,
+		.label = "ATI coarse fractional multiplier",
+	},
+	{
+		.name = "azoteq,ati-frac-div-coarse",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x1E,
+				[IQS7211A] = 0x30,
+				[IQS7211E] = 0x21,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x22,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x23,
+				[IQS7211A] = 0x36,
+				[IQS7211E] = 0x25,
+			},
+		},
+		.reg_shift = 0,
+		.reg_width = 5,
+		.label = "ATI coarse fractional divider",
+	},
+	{
+		.name = "azoteq,ati-comp-div",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x1F,
+				[IQS7211E] = 0x22,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x24,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7211E] = 0x26,
+			},
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.val_max = 31,
+		.label = "ATI compensation divider",
+	},
+	{
+		.name = "azoteq,ati-comp-div",
+		.reg_addr = {
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x24,
+			},
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_max = 31,
+		.label = "ATI compensation divider",
+	},
+	{
+		.name = "azoteq,ati-comp-div",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7211A] = 0x31,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7211A] = 0x37,
+			},
+		},
+		.val_max = 31,
+		.label = "ATI compensation divider",
+	},
+	{
+		.name = "azoteq,ati-target",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x20,
+				[IQS7211A] = 0x32,
+				[IQS7211E] = 0x23,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x27,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x28,
+				[IQS7211A] = 0x38,
+				[IQS7211E] = 0x27,
+			},
+		},
+		.label = "ATI target",
+	},
+	{
+		.name = "azoteq,ati-base",
+		.reg_addr[IQS7211_REG_GRP_ALP] = {
+			[IQS7210A] = 0x26,
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 8,
+		.label = "ATI base",
+	},
+	{
+		.name = "azoteq,ati-base",
+		.reg_addr[IQS7211_REG_GRP_BTN] = {
+			[IQS7210A] = 0x26,
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.val_pitch = 8,
+		.label = "ATI base",
+	},
+	{
+		.name = "azoteq,rate-active-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x29,
+			[IQS7211A] = 0x40,
+			[IQS7211E] = 0x28,
+		},
+		.label = "active mode report rate",
+	},
+	{
+		.name = "azoteq,rate-touch-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x2A,
+			[IQS7211A] = 0x41,
+			[IQS7211E] = 0x29,
+		},
+		.label = "idle-touch mode report rate",
+	},
+	{
+		.name = "azoteq,rate-idle-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x2B,
+			[IQS7211A] = 0x42,
+			[IQS7211E] = 0x2A,
+		},
+		.label = "idle mode report rate",
+	},
+	{
+		.name = "azoteq,rate-lp1-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x2C,
+			[IQS7211A] = 0x43,
+			[IQS7211E] = 0x2B,
+		},
+		.label = "low-power mode 1 report rate",
+	},
+	{
+		.name = "azoteq,rate-lp2-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x2D,
+			[IQS7211A] = 0x44,
+			[IQS7211E] = 0x2C,
+		},
+		.label = "low-power mode 2 report rate",
+	},
+	{
+		.name = "azoteq,timeout-active-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x2E,
+			[IQS7211A] = 0x45,
+			[IQS7211E] = 0x2D,
+		},
+		.val_pitch = 1000,
+		.label = "active mode timeout",
+	},
+	{
+		.name = "azoteq,timeout-touch-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x2F,
+			[IQS7211A] = 0x46,
+			[IQS7211E] = 0x2E,
+		},
+		.val_pitch = 1000,
+		.label = "idle-touch mode timeout",
+	},
+	{
+		.name = "azoteq,timeout-idle-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x30,
+			[IQS7211A] = 0x47,
+			[IQS7211E] = 0x2F,
+		},
+		.val_pitch = 1000,
+		.label = "idle mode timeout",
+	},
+	{
+		.name = "azoteq,timeout-lp1-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x31,
+			[IQS7211A] = 0x48,
+			[IQS7211E] = 0x30,
+		},
+		.val_pitch = 1000,
+		.label = "low-power mode 1 timeout",
+	},
+	{
+		.name = "azoteq,timeout-lp2-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x32,
+			[IQS7211E] = 0x31,
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_pitch = 1000,
+		.val_max = 60000,
+		.label = "trackpad reference value update rate",
+	},
+	{
+		.name = "azoteq,timeout-lp2-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7211A] = 0x49,
+		},
+		.val_pitch = 1000,
+		.val_max = 60000,
+		.label = "trackpad reference value update rate",
+	},
+	{
+		.name = "azoteq,timeout-ati-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x32,
+			[IQS7211E] = 0x31,
+		},
+		.reg_width = 8,
+		.val_pitch = 1000,
+		.val_max = 60000,
+		.label = "ATI error timeout",
+	},
+	{
+		.name = "azoteq,timeout-ati-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7211A] = 0x35,
+		},
+		.val_pitch = 1000,
+		.val_max = 60000,
+		.label = "ATI error timeout",
+	},
+	{
+		.name = "azoteq,timeout-comms-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x33,
+			[IQS7211A] = 0x4A,
+			[IQS7211E] = 0x32,
+		},
+		.label = "communication timeout",
+	},
+	{
+		.name = "azoteq,timeout-press-ms",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x34,
+		},
+		.reg_width = 8,
+		.val_pitch = 1000,
+		.val_max = 60000,
+		.label = "press timeout",
+	},
+	{
+		.name = "azoteq,ati-mode",
+		.reg_addr[IQS7211_REG_GRP_ALP] = {
+			[IQS7210A] = 0x37,
+		},
+		.reg_shift = 15,
+		.reg_width = 1,
+		.label = "ATI mode",
+	},
+	{
+		.name = "azoteq,ati-mode",
+		.reg_addr[IQS7211_REG_GRP_BTN] = {
+			[IQS7210A] = 0x37,
+		},
+		.reg_shift = 7,
+		.reg_width = 1,
+		.label = "ATI mode",
+	},
+	{
+		.name = "azoteq,sense-mode",
+		.reg_addr[IQS7211_REG_GRP_ALP] = {
+			[IQS7210A] = 0x37,
+			[IQS7211A] = 0x72,
+			[IQS7211E] = 0x36,
+		},
+		.reg_shift = 8,
+		.reg_width = 1,
+		.label = "sensing mode",
+	},
+	{
+		.name = "azoteq,sense-mode",
+		.reg_addr[IQS7211_REG_GRP_BTN] = {
+			[IQS7210A] = 0x37,
+		},
+		.reg_shift = 0,
+		.reg_width = 2,
+		.val_max = 2,
+		.label = "sensing mode",
+	},
+	{
+		.name = "azoteq,fosc-freq",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x38,
+			[IQS7211A] = 0x52,
+			[IQS7211E] = 0x35,
+		},
+		.reg_shift = 4,
+		.reg_width = 1,
+		.label = "core clock frequency selection",
+	},
+	{
+		.name = "azoteq,fosc-trim",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x38,
+			[IQS7211A] = 0x52,
+			[IQS7211E] = 0x35,
+		},
+		.reg_shift = 0,
+		.reg_width = 4,
+		.label = "core clock frequency trim",
+	},
+	{
+		.name = "azoteq,touch-exit",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x3B,
+				[IQS7211A] = 0x53,
+				[IQS7211E] = 0x38,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x3E,
+			},
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "touch exit factor",
+	},
+	{
+		.name = "azoteq,touch-enter",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x3B,
+				[IQS7211A] = 0x53,
+				[IQS7211E] = 0x38,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x3E,
+			},
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "touch entrance factor",
+	},
+	{
+		.name = "azoteq,thresh",
+		.reg_addr = {
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x3C,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x3D,
+				[IQS7211A] = 0x54,
+				[IQS7211E] = 0x39,
+			},
+		},
+		.label = "threshold",
+	},
+	{
+		.name = "azoteq,debounce-exit",
+		.reg_addr = {
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x3F,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x40,
+				[IQS7211A] = 0x56,
+				[IQS7211E] = 0x3A,
+			},
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "debounce exit factor",
+	},
+	{
+		.name = "azoteq,debounce-enter",
+		.reg_addr = {
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x3F,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x40,
+				[IQS7211A] = 0x56,
+				[IQS7211E] = 0x3A,
+			},
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "debounce entrance factor",
+	},
+	{
+		.name = "azoteq,conv-frac",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x48,
+				[IQS7211A] = 0x58,
+				[IQS7211E] = 0x3D,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x49,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x4A,
+				[IQS7211A] = 0x59,
+				[IQS7211E] = 0x3E,
+			},
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "conversion frequency fractional divider",
+	},
+	{
+		.name = "azoteq,conv-period",
+		.reg_addr = {
+			[IQS7211_REG_GRP_TP] = {
+				[IQS7210A] = 0x48,
+				[IQS7211A] = 0x58,
+				[IQS7211E] = 0x3D,
+			},
+			[IQS7211_REG_GRP_BTN] = {
+				[IQS7210A] = 0x49,
+			},
+			[IQS7211_REG_GRP_ALP] = {
+				[IQS7210A] = 0x4A,
+				[IQS7211A] = 0x59,
+				[IQS7211E] = 0x3E,
+			},
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "conversion period",
+	},
+	{
+		.name = "azoteq,thresh",
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x55,
+			[IQS7211A] = 0x67,
+			[IQS7211E] = 0x48,
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "threshold",
+	},
+	{
+		.name = "azoteq,contact-split",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x55,
+			[IQS7211A] = 0x67,
+			[IQS7211E] = 0x48,
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "contact split factor",
+	},
+	{
+		.name = "azoteq,trim-x",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x56,
+			[IQS7211E] = 0x49,
+		},
+		.reg_shift = 0,
+		.reg_width = 8,
+		.label = "horizontal trim width",
+	},
+	{
+		.name = "azoteq,trim-x",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7211A] = 0x68,
+		},
+		.label = "horizontal trim width",
+	},
+	{
+		.name = "azoteq,trim-y",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7210A] = 0x56,
+			[IQS7211E] = 0x49,
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.label = "vertical trim height",
+	},
+	{
+		.name = "azoteq,trim-y",
+		.reg_addr[IQS7211_REG_GRP_SYS] = {
+			[IQS7211A] = 0x69,
+		},
+		.label = "vertical trim height",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_key = IQS7211_REG_KEY_TAP,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x59,
+			[IQS7211A] = 0x81,
+			[IQS7211E] = 0x4C,
+		},
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-mid-ms",
+		.reg_key = IQS7211_REG_KEY_TAP,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7211E] = 0x4D,
+		},
+		.label = "repeated gesture time",
+	},
+	{
+		.name = "azoteq,gesture-dist",
+		.reg_key = IQS7211_REG_KEY_TAP,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5A,
+			[IQS7211A] = 0x82,
+			[IQS7211E] = 0x4E,
+		},
+		.label = "gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-dist",
+		.reg_key = IQS7211_REG_KEY_HOLD,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5A,
+			[IQS7211A] = 0x82,
+			[IQS7211E] = 0x4E,
+		},
+		.label = "gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-min-ms",
+		.reg_key = IQS7211_REG_KEY_HOLD,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5B,
+			[IQS7211A] = 0x83,
+			[IQS7211E] = 0x4F,
+		},
+		.label = "minimum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5C,
+			[IQS7211A] = 0x84,
+			[IQS7211E] = 0x50,
+		},
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-max-ms",
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5C,
+			[IQS7211A] = 0x84,
+			[IQS7211E] = 0x50,
+		},
+		.label = "maximum gesture time",
+	},
+	{
+		.name = "azoteq,gesture-dist",
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5D,
+			[IQS7211A] = 0x85,
+			[IQS7211E] = 0x51,
+		},
+		.label = "gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-dist",
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7210A] = 0x5E,
+			[IQS7211A] = 0x86,
+			[IQS7211E] = 0x52,
+		},
+		.label = "gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-dist-rep",
+		.reg_key = IQS7211_REG_KEY_AXIAL_X,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7211E] = 0x53,
+		},
+		.label = "repeated gesture distance",
+	},
+	{
+		.name = "azoteq,gesture-dist-rep",
+		.reg_key = IQS7211_REG_KEY_AXIAL_Y,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7211E] = 0x54,
+		},
+		.label = "repeated gesture distance",
+	},
+	{
+		.name = "azoteq,thresh",
+		.reg_key = IQS7211_REG_KEY_PALM,
+		.reg_addr[IQS7211_REG_GRP_TP] = {
+			[IQS7211E] = 0x55,
+		},
+		.reg_shift = 8,
+		.reg_width = 8,
+		.val_max = 42,
+		.label = "threshold",
+	},
+};
+
+static const u8 iqs7211_gesture_angle[] = {
+	0x00, 0x01, 0x02, 0x03,
+	0x04, 0x06, 0x07, 0x08,
+	0x09, 0x0A, 0x0B, 0x0C,
+	0x0E, 0x0F, 0x10, 0x11,
+	0x12, 0x14, 0x15, 0x16,
+	0x17, 0x19, 0x1A, 0x1B,
+	0x1C, 0x1E, 0x1F, 0x21,
+	0x22, 0x23, 0x25, 0x26,
+	0x28, 0x2A, 0x2B, 0x2D,
+	0x2E, 0x30, 0x32, 0x34,
+	0x36, 0x38, 0x3A, 0x3C,
+	0x3E, 0x40, 0x42, 0x45,
+	0x47, 0x4A, 0x4C, 0x4F,
+	0x52, 0x55, 0x58, 0x5B,
+	0x5F, 0x63, 0x66, 0x6B,
+	0x6F, 0x73, 0x78, 0x7E,
+	0x83, 0x89, 0x90, 0x97,
+	0x9E, 0xA7, 0xB0, 0xBA,
+	0xC5, 0xD1, 0xDF, 0xEF,
+};
+
+struct iqs7211_ver_info {
+	__le16 prod_num;
+	__le16 major;
+	__le16 minor;
+	__le32 patch;
+} __packed;
+
+struct iqs7211_touch_data {
+	__le16 abs_x;
+	__le16 abs_y;
+	__le16 pressure;
+	__le16 area;
+} __packed;
+
+struct iqs7211_tp_config {
+	u8 tp_settings;
+	u8 total_rx;
+	u8 total_tx;
+	u8 num_contacts;
+	__le16 max_x;
+	__le16 max_y;
+} __packed;
+
+struct iqs7211_private {
+	const struct iqs7211_dev_desc *dev_desc;
+	struct gpio_desc *reset_gpio;
+	struct gpio_desc *irq_gpio;
+	struct i2c_client *client;
+	struct input_dev *tp_idev;
+	struct input_dev *kp_idev;
+	struct iqs7211_ver_info ver_info;
+	struct iqs7211_tp_config tp_config;
+	struct touchscreen_properties prop;
+	struct list_head reg_field_head;
+	enum iqs7211_comms_mode comms_init;
+	enum iqs7211_comms_mode comms_mode;
+	unsigned int num_contacts;
+	unsigned int kp_code[ARRAY_SIZE(iqs7211e_kp_events)];
+	u8 rx_tx_map[IQS7211_MAX_CTX + 1];
+	u8 cycle_alloc[2][33];
+	u8 exp_file[2];
+	u16 e