^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 UCB1x00-based touchscreens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2001 Russell King, All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2005 Pavel Machek
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * 21-Jan-2002 <jco@ict.es> :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Added support for synchronous A/D mode. This mode is useful to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * avoid noise induced in the touchpanel by the LCD, provided that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * the UCB1x00 has a valid LCD sync signal routed to its ADCSYNC pin.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * It is important to note that the signal connected to the ADCSYNC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * pin should provide pulses even when the LCD is blanked, otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * a pen touch needed to unblank the LCD will never be read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/freezer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/mfd/ucb1x00.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <mach/collie.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/mach-types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct ucb1x00_ts {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct ucb1x00 *ucb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) spinlock_t irq_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) unsigned irq_disabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) wait_queue_head_t irq_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct task_struct *rtask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u16 x_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u16 y_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) unsigned int adcsync:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int adcsync;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static inline void ucb1x00_ts_evt_add(struct ucb1x00_ts *ts, u16 pressure, u16 x, u16 y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct input_dev *idev = ts->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) input_report_abs(idev, ABS_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) input_report_abs(idev, ABS_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) input_report_abs(idev, ABS_PRESSURE, pressure);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) input_report_key(idev, BTN_TOUCH, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) input_sync(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static inline void ucb1x00_ts_event_release(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct input_dev *idev = ts->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) input_report_abs(idev, ABS_PRESSURE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) input_report_key(idev, BTN_TOUCH, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) input_sync(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * Switch to interrupt mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static inline void ucb1x00_ts_mode_int(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) UCB_TS_CR_MODE_INT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Switch to pressure mode, and read pressure. We don't need to wait
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * here, since both plates are being driven.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static inline unsigned int ucb1x00_ts_read_pressure(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (machine_is_collie()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ucb1x00_io_write(ts->ucb, COLLIE_TC35143_GPIO_TBL_CHK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) UCB_TS_CR_TSPX_POW | UCB_TS_CR_TSMX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) udelay(55);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_AD2, ts->adcsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_TSPY, ts->adcsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * Switch to X position mode and measure Y plate. We switch the plate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * configuration in pressure mode, then switch to position mode. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * gives a faster response time. Even so, we need to wait about 55us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * for things to stabilise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static inline unsigned int ucb1x00_ts_read_xpos(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (machine_is_collie())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ucb1x00_io_write(ts->ucb, 0, COLLIE_TC35143_GPIO_TBL_CHK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) udelay(55);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_TSPY, ts->adcsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * Switch to Y position mode and measure X plate. We switch the plate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * configuration in pressure mode, then switch to position mode. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * gives a faster response time. Even so, we need to wait about 55us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * for things to stabilise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static inline unsigned int ucb1x00_ts_read_ypos(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (machine_is_collie())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) ucb1x00_io_write(ts->ucb, 0, COLLIE_TC35143_GPIO_TBL_CHK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) udelay(55);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_TSPX, ts->adcsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * Switch to X plate resistance mode. Set MX to ground, PX to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * supply. Measure current.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static inline unsigned int ucb1x00_ts_read_xres(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return ucb1x00_adc_read(ts->ucb, 0, ts->adcsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Switch to Y plate resistance mode. Set MY to ground, PY to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * supply. Measure current.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static inline unsigned int ucb1x00_ts_read_yres(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return ucb1x00_adc_read(ts->ucb, 0, ts->adcsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static inline int ucb1x00_ts_pen_down(struct ucb1x00_ts *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) unsigned int val = ucb1x00_reg_read(ts->ucb, UCB_TS_CR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (machine_is_collie())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return (!(val & (UCB_TS_CR_TSPX_LOW)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return (val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * This is a RT kernel thread that handles the ADC accesses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * (mainly so we can use semaphores in the UCB1200 core code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * to serialise accesses to the ADC).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static int ucb1x00_thread(void *_ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct ucb1x00_ts *ts = _ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) DECLARE_WAITQUEUE(wait, current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) bool frozen, ignore = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) int valid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) set_freezable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) add_wait_queue(&ts->irq_wait, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) while (!kthread_freezable_should_stop(&frozen)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) unsigned int x, y, p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) signed long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (frozen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) ignore = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ucb1x00_adc_enable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) x = ucb1x00_ts_read_xpos(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) y = ucb1x00_ts_read_ypos(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) p = ucb1x00_ts_read_pressure(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * Switch back to interrupt mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ucb1x00_ts_mode_int(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) ucb1x00_adc_disable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) msleep(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) ucb1x00_enable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (ucb1x00_ts_pen_down(ts)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) set_current_state(TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) spin_lock_irq(&ts->irq_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (ts->irq_disabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) ts->irq_disabled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) enable_irq(ts->ucb->irq_base + UCB_IRQ_TSPX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) spin_unlock_irq(&ts->irq_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) ucb1x00_disable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * If we spat out a valid sample set last time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * spit out a "pen off" sample here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (valid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) ucb1x00_ts_event_release(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) valid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) timeout = MAX_SCHEDULE_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) ucb1x00_disable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * Filtering is policy. Policy belongs in user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * space. We therefore leave it to user space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * to do any filtering they please.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (!ignore) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) ucb1x00_ts_evt_add(ts, p, x, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) valid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) set_current_state(TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) timeout = HZ / 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) schedule_timeout(timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) remove_wait_queue(&ts->irq_wait, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) ts->rtask = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * We only detect touch screen _touches_ with this interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * handler, and even then we just schedule our task.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static irqreturn_t ucb1x00_ts_irq(int irq, void *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct ucb1x00_ts *ts = id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) spin_lock(&ts->irq_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) ts->irq_disabled = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) disable_irq_nosync(ts->ucb->irq_base + UCB_IRQ_TSPX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) spin_unlock(&ts->irq_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) wake_up(&ts->irq_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int ucb1x00_ts_open(struct input_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct ucb1x00_ts *ts = input_get_drvdata(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) unsigned long flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) BUG_ON(ts->rtask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (machine_is_collie())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) flags = IRQF_TRIGGER_RISING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) flags = IRQF_TRIGGER_FALLING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) ts->irq_disabled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) init_waitqueue_head(&ts->irq_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) ret = request_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ucb1x00_ts_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) flags, "ucb1x00-ts", ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * If we do this at all, we should allow the user to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * measure and read the X and Y resistance at any time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) ucb1x00_adc_enable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ts->x_res = ucb1x00_ts_read_xres(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) ts->y_res = ucb1x00_ts_read_yres(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) ucb1x00_adc_disable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ts->rtask = kthread_run(ucb1x00_thread, ts, "ktsd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (!IS_ERR(ts->rtask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) free_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) ts->rtask = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * Release touchscreen resources. Disable IRQs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static void ucb1x00_ts_close(struct input_dev *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct ucb1x00_ts *ts = input_get_drvdata(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (ts->rtask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) kthread_stop(ts->rtask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) ucb1x00_enable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) free_irq(ts->ucb->irq_base + UCB_IRQ_TSPX, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) ucb1x00_reg_write(ts->ucb, UCB_TS_CR, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) ucb1x00_disable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * Initialisation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static int ucb1x00_ts_add(struct ucb1x00_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct ucb1x00_ts *ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) ts = kzalloc(sizeof(struct ucb1x00_ts), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) idev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (!ts || !idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) ts->ucb = dev->ucb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ts->idev = idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ts->adcsync = adcsync ? UCB_SYNC : UCB_NOSYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) spin_lock_init(&ts->irq_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) idev->name = "Touchscreen panel";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) idev->id.product = ts->ucb->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) idev->open = ucb1x00_ts_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) idev->close = ucb1x00_ts_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) idev->dev.parent = &ts->ucb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) idev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) input_set_drvdata(idev, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ucb1x00_adc_enable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) ts->x_res = ucb1x00_ts_read_xres(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) ts->y_res = ucb1x00_ts_read_yres(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) ucb1x00_adc_disable(ts->ucb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) input_set_abs_params(idev, ABS_X, 0, ts->x_res, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) input_set_abs_params(idev, ABS_Y, 0, ts->y_res, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) input_set_abs_params(idev, ABS_PRESSURE, 0, 0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) err = input_register_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) dev->priv = ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) input_free_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) kfree(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static void ucb1x00_ts_remove(struct ucb1x00_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct ucb1x00_ts *ts = dev->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) input_unregister_device(ts->idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) kfree(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) static struct ucb1x00_driver ucb1x00_ts_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) .add = ucb1x00_ts_add,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) .remove = ucb1x00_ts_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) static int __init ucb1x00_ts_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return ucb1x00_register_driver(&ucb1x00_ts_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static void __exit ucb1x00_ts_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) ucb1x00_unregister_driver(&ucb1x00_ts_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) module_param(adcsync, int, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) module_init(ucb1x00_ts_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) module_exit(ucb1x00_ts_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) MODULE_DESCRIPTION("UCB1x00 touchscreen driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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