Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Touchscreen driver for Marvell 88PM860x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2009 Marvell International Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * 	Haojian Zhuang <haojian.zhuang@marvell.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/mfd/88pm860x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define MEAS_LEN		(8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define ACCURATE_BIT		(12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) /* touch register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define MEAS_EN3		(0x52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define MEAS_TSIX_1		(0x8D)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define MEAS_TSIX_2		(0x8E)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define MEAS_TSIY_1		(0x8F)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define MEAS_TSIY_2		(0x90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define MEAS_TSIZ1_1		(0x91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define MEAS_TSIZ1_2		(0x92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define MEAS_TSIZ2_1		(0x93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define MEAS_TSIZ2_2		(0x94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) /* bit definitions of touch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define MEAS_PD_EN		(1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define MEAS_TSIX_EN		(1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define MEAS_TSIY_EN		(1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define MEAS_TSIZ1_EN		(1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define MEAS_TSIZ2_EN		(1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) struct pm860x_touch {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct i2c_client *i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	struct pm860x_chip *chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	int res_x;		/* resistor of Xplate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static irqreturn_t pm860x_touch_handler(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct pm860x_touch *touch = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct pm860x_chip *chip = touch->chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	unsigned char buf[MEAS_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	int x, y, pen_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	int z1, z2, rt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	ret = pm860x_bulk_read(touch->i2c, MEAS_TSIX_1, MEAS_LEN, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	pen_down = buf[1] & (1 << 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	x = ((buf[0] & 0xFF) << 4) | (buf[1] & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	y = ((buf[2] & 0xFF) << 4) | (buf[3] & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	z1 = ((buf[4] & 0xFF) << 4) | (buf[5] & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	z2 = ((buf[6] & 0xFF) << 4) | (buf[7] & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	if (pen_down) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		if ((x != 0) && (z1 != 0) && (touch->res_x != 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 			rt = z2 / z1 - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			rt = (rt * touch->res_x * x) >> ACCURATE_BIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			dev_dbg(chip->dev, "z1:%d, z2:%d, rt:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 				z1, z2, rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		input_report_abs(touch->idev, ABS_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		input_report_abs(touch->idev, ABS_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		input_report_abs(touch->idev, ABS_PRESSURE, rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		input_report_key(touch->idev, BTN_TOUCH, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		dev_dbg(chip->dev, "pen down at [%d, %d].\n", x, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		input_report_abs(touch->idev, ABS_PRESSURE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		input_report_key(touch->idev, BTN_TOUCH, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		dev_dbg(chip->dev, "pen release\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	input_sync(touch->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static int pm860x_touch_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	struct pm860x_touch *touch = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	int data, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	data = MEAS_PD_EN | MEAS_TSIX_EN | MEAS_TSIY_EN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		| MEAS_TSIZ1_EN | MEAS_TSIZ2_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	ret = pm860x_set_bits(touch->i2c, MEAS_EN3, data, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static void pm860x_touch_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct pm860x_touch *touch = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	int data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	data = MEAS_PD_EN | MEAS_TSIX_EN | MEAS_TSIY_EN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		| MEAS_TSIZ1_EN | MEAS_TSIZ2_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	pm860x_set_bits(touch->i2c, MEAS_EN3, data, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static int pm860x_touch_dt_init(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 					  struct pm860x_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 					  int *res_x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	struct device_node *np = pdev->dev.parent->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 				 : chip->companion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	int data, n, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (!np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	np = of_get_child_by_name(np, "touch");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (!np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		dev_err(&pdev->dev, "Can't find touch node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	/* set GPADC MISC1 register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-prebias", &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		data |= (n << 1) & PM8607_GPADC_PREBIAS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-slot-cycle", &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		data |= (n << 3) & PM8607_GPADC_SLOT_CYCLE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-off-scale", &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		data |= (n << 5) & PM8607_GPADC_OFF_SCALE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	if (!of_property_read_u32(np, "marvell,88pm860x-gpadc-sw-cal", &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		data |= (n << 7) & PM8607_GPADC_SW_CAL_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	if (data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			goto err_put_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	/* set tsi prebias time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	if (!of_property_read_u32(np, "marvell,88pm860x-tsi-prebias", &data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			goto err_put_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	/* set prebias & prechg time of pen detect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (!of_property_read_u32(np, "marvell,88pm860x-pen-prebias", &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		data |= n & PM8607_PD_PREBIAS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (!of_property_read_u32(np, "marvell,88pm860x-pen-prechg", &n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		data |= n & PM8607_PD_PRECHG_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	if (data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			goto err_put_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	of_property_read_u32(np, "marvell,88pm860x-resistor-X", res_x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	of_node_put(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) err_put_node:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	of_node_put(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #define pm860x_touch_dt_init(x, y, z)	(-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int pm860x_touch_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct pm860x_touch_pdata *pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	struct pm860x_touch *touch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 				 : chip->companion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	int irq, ret, res_x = 0, data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (pm860x_touch_dt_init(pdev, chip, &res_x)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		if (pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			/* set GPADC MISC1 register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			data |= (pdata->gpadc_prebias << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 				& PM8607_GPADC_PREBIAS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			data |= (pdata->slot_cycle << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 				& PM8607_GPADC_SLOT_CYCLE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			data |= (pdata->off_scale << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 				& PM8607_GPADC_OFF_SCALE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			data |= (pdata->sw_cal << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 				& PM8607_GPADC_SW_CAL_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			if (data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 				ret = pm860x_reg_write(i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 					PM8607_GPADC_MISC1, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 				if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 					return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 			/* set tsi prebias time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 			if (pdata->tsi_prebias) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 				data = pdata->tsi_prebias;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 				ret = pm860x_reg_write(i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 					PM8607_TSI_PREBIAS, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 				if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 					return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			/* set prebias & prechg time of pen detect */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 			data |= pdata->pen_prebias
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 				& PM8607_PD_PREBIAS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			data |= (pdata->pen_prechg << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 				& PM8607_PD_PRECHG_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 			if (data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 				ret = pm860x_reg_write(i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 					PM8607_PD_PREBIAS, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 				if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 					return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			res_x = pdata->res_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 			dev_err(&pdev->dev, "failed to get platform data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	/* enable GPADC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1, PM8607_GPADC_EN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 			      PM8607_GPADC_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	touch = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_touch),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			     GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	if (!touch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	touch->idev = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	if (!touch->idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		dev_err(&pdev->dev, "Failed to allocate input device!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	touch->idev->name = "88pm860x-touch";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	touch->idev->phys = "88pm860x/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	touch->idev->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	touch->idev->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	touch->idev->open = pm860x_touch_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	touch->idev->close = pm860x_touch_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	touch->chip = chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	touch->i2c = i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	touch->irq = irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	touch->res_x = res_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	input_set_drvdata(touch->idev, touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	ret = devm_request_threaded_irq(&pdev->dev, touch->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 					pm860x_touch_handler, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 					"touch", touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	__set_bit(EV_ABS, touch->idev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	__set_bit(ABS_X, touch->idev->absbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	__set_bit(ABS_Y, touch->idev->absbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	__set_bit(ABS_PRESSURE, touch->idev->absbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	__set_bit(EV_SYN, touch->idev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	__set_bit(EV_KEY, touch->idev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	__set_bit(BTN_TOUCH, touch->idev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	input_set_abs_params(touch->idev, ABS_X, 0, 1 << ACCURATE_BIT, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	input_set_abs_params(touch->idev, ABS_Y, 0, 1 << ACCURATE_BIT, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	input_set_abs_params(touch->idev, ABS_PRESSURE, 0, 1 << ACCURATE_BIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 				0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	ret = input_register_device(touch->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		dev_err(chip->dev, "Failed to register touch!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static struct platform_driver pm860x_touch_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		.name	= "88pm860x-touch",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	.probe	= pm860x_touch_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) module_platform_driver(pm860x_touch_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) MODULE_DESCRIPTION("Touchscreen driver for Marvell Semiconductor 88PM860x");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) MODULE_ALIAS("platform:88pm860x-touch");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)