^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) /* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/input/matrix_keypad.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define PM8XXX_MAX_ROWS 18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define PM8XXX_MAX_COLS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define PM8XXX_ROW_SHIFT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define PM8XXX_MATRIX_MAX_SIZE (PM8XXX_MAX_ROWS * PM8XXX_MAX_COLS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define PM8XXX_MIN_ROWS 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define PM8XXX_MIN_COLS 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define MAX_SCAN_DELAY 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define MIN_SCAN_DELAY 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* in nanoseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define MAX_ROW_HOLD_DELAY 122000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define MIN_ROW_HOLD_DELAY 30500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define MAX_DEBOUNCE_TIME 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define MIN_DEBOUNCE_TIME 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define KEYP_CTRL 0x148
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define KEYP_CTRL_EVNTS BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define KEYP_CTRL_EVNTS_MASK 0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define KEYP_CTRL_SCAN_COLS_SHIFT 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define KEYP_CTRL_SCAN_COLS_MIN 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define KEYP_CTRL_SCAN_COLS_BITS 0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define KEYP_CTRL_SCAN_ROWS_SHIFT 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define KEYP_CTRL_SCAN_ROWS_MIN 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define KEYP_CTRL_SCAN_ROWS_BITS 0x7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define KEYP_CTRL_KEYP_EN BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define KEYP_SCAN 0x149
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define KEYP_SCAN_READ_STATE BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define KEYP_SCAN_DBOUNCE_SHIFT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define KEYP_SCAN_PAUSE_SHIFT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define KEYP_SCAN_ROW_HOLD_SHIFT 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define KEYP_TEST 0x14A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define KEYP_TEST_CLEAR_RECENT_SCAN BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define KEYP_TEST_CLEAR_OLD_SCAN BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define KEYP_TEST_READ_RESET BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define KEYP_TEST_DTEST_EN BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define KEYP_TEST_ABORT_READ BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define KEYP_TEST_DBG_SELECT_SHIFT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* bits of these registers represent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * '0' for key press
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * '1' for key release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define KEYP_RECENT_DATA 0x14B
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define KEYP_OLD_DATA 0x14C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define KEYP_CLOCK_FREQ 32768
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * struct pmic8xxx_kp - internal keypad data structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * @num_cols - number of columns of keypad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * @num_rows - number of row of keypad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * @input - input device pointer for keypad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @regmap - regmap handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * @key_sense_irq - key press/release irq number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * @key_stuck_irq - key stuck notification irq number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @keycodes - array to hold the key codes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @dev - parent device pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * @keystate - present key press/release state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * @stuckstate - present state when key stuck irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @ctrl_reg - control register value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct pmic8xxx_kp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned int num_rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) unsigned int num_cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int key_sense_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int key_stuck_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned short keycodes[PM8XXX_MATRIX_MAX_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) u16 keystate[PM8XXX_MAX_ROWS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) u16 stuckstate[PM8XXX_MAX_ROWS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) u8 ctrl_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static u8 pmic8xxx_col_state(struct pmic8xxx_kp *kp, u8 col)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* all keys pressed on that particular row? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (col == 0x00)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return 1 << kp->num_cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return col & ((1 << kp->num_cols) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * Synchronous read protocol for RevB0 onwards:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * 1. Write '1' to ReadState bit in KEYP_SCAN register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * 2. Wait 2*32KHz clocks, so that HW can successfully enter read mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * synchronously
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * 3. Read rows in old array first if events are more than one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * 4. Read rows in recent array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * 5. Wait 4*32KHz clocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * 6. Write '0' to ReadState bit of KEYP_SCAN register so that hw can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * synchronously exit read mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static int pmic8xxx_chk_sync_read(struct pmic8xxx_kp *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) unsigned int scan_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) rc = regmap_read(kp->regmap, KEYP_SCAN, &scan_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) dev_err(kp->dev, "Error reading KEYP_SCAN reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) scan_val |= 0x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) rc = regmap_write(kp->regmap, KEYP_SCAN, scan_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) dev_err(kp->dev, "Error writing KEYP_SCAN reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* 2 * 32KHz clocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) udelay((2 * DIV_ROUND_UP(USEC_PER_SEC, KEYP_CLOCK_FREQ)) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int pmic8xxx_kp_read_data(struct pmic8xxx_kp *kp, u16 *state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) u16 data_reg, int read_rows)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int rc, row;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) for (row = 0; row < read_rows; row++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) rc = regmap_read(kp->regmap, data_reg, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) dev_dbg(kp->dev, "%d = %d\n", row, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) state[row] = pmic8xxx_col_state(kp, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static int pmic8xxx_kp_read_matrix(struct pmic8xxx_kp *kp, u16 *new_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) u16 *old_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int rc, read_rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) unsigned int scan_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (kp->num_rows < PM8XXX_MIN_ROWS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) read_rows = PM8XXX_MIN_ROWS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) read_rows = kp->num_rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) pmic8xxx_chk_sync_read(kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (old_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) rc = pmic8xxx_kp_read_data(kp, old_state, KEYP_OLD_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) read_rows);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) dev_err(kp->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) "Error reading KEYP_OLD_DATA, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) rc = pmic8xxx_kp_read_data(kp, new_state, KEYP_RECENT_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) read_rows);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) dev_err(kp->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) "Error reading KEYP_RECENT_DATA, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /* 4 * 32KHz clocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) udelay((4 * DIV_ROUND_UP(USEC_PER_SEC, KEYP_CLOCK_FREQ)) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) rc = regmap_read(kp->regmap, KEYP_SCAN, &scan_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) dev_err(kp->dev, "Error reading KEYP_SCAN reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) scan_val &= 0xFE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) rc = regmap_write(kp->regmap, KEYP_SCAN, scan_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) dev_err(kp->dev, "Error writing KEYP_SCAN reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static void __pmic8xxx_kp_scan_matrix(struct pmic8xxx_kp *kp, u16 *new_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) u16 *old_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) int row, col, code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) for (row = 0; row < kp->num_rows; row++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) int bits_changed = new_state[row] ^ old_state[row];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (!bits_changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) for (col = 0; col < kp->num_cols; col++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (!(bits_changed & (1 << col)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dev_dbg(kp->dev, "key [%d:%d] %s\n", row, col,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) !(new_state[row] & (1 << col)) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) "pressed" : "released");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) code = MATRIX_SCAN_CODE(row, col, PM8XXX_ROW_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) input_event(kp->input, EV_MSC, MSC_SCAN, code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) input_report_key(kp->input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) kp->keycodes[code],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) !(new_state[row] & (1 << col)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) input_sync(kp->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static bool pmic8xxx_detect_ghost_keys(struct pmic8xxx_kp *kp, u16 *new_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) int row, found_first = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) u16 check, row_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) check = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) for (row = 0; row < kp->num_rows; row++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) row_state = (~new_state[row]) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) ((1 << kp->num_cols) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (hweight16(row_state) > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (found_first == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) found_first = row;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (check & row_state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) dev_dbg(kp->dev, "detected ghost key on row[%d]"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) " and row[%d]\n", found_first, row);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) check |= row_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static int pmic8xxx_kp_scan_matrix(struct pmic8xxx_kp *kp, unsigned int events)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) u16 new_state[PM8XXX_MAX_ROWS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) u16 old_state[PM8XXX_MAX_ROWS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) switch (events) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) case 0x1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) rc = pmic8xxx_kp_read_matrix(kp, new_state, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* detecting ghost key is not an error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (pmic8xxx_detect_ghost_keys(kp, new_state))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) __pmic8xxx_kp_scan_matrix(kp, new_state, kp->keystate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) memcpy(kp->keystate, new_state, sizeof(new_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) case 0x3: /* two events - eventcounter is gray-coded */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) rc = pmic8xxx_kp_read_matrix(kp, new_state, old_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) __pmic8xxx_kp_scan_matrix(kp, old_state, kp->keystate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) __pmic8xxx_kp_scan_matrix(kp, new_state, old_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) memcpy(kp->keystate, new_state, sizeof(new_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) case 0x2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) dev_dbg(kp->dev, "Some key events were lost\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) rc = pmic8xxx_kp_read_matrix(kp, new_state, old_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) __pmic8xxx_kp_scan_matrix(kp, old_state, kp->keystate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) __pmic8xxx_kp_scan_matrix(kp, new_state, old_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) memcpy(kp->keystate, new_state, sizeof(new_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * NOTE: We are reading recent and old data registers blindly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * whenever key-stuck interrupt happens, because events counter doesn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * get updated when this interrupt happens due to key stuck doesn't get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * considered as key state change.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * We are not using old data register contents after they are being read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * because it might report the key which was pressed before the key being stuck
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * as stuck key because it's pressed status is stored in the old data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static irqreturn_t pmic8xxx_kp_stuck_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) u16 new_state[PM8XXX_MAX_ROWS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) u16 old_state[PM8XXX_MAX_ROWS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct pmic8xxx_kp *kp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) rc = pmic8xxx_kp_read_matrix(kp, new_state, old_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) dev_err(kp->dev, "failed to read keypad matrix\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return IRQ_HANDLED;
^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) __pmic8xxx_kp_scan_matrix(kp, new_state, kp->stuckstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return IRQ_HANDLED;
^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) static irqreturn_t pmic8xxx_kp_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct pmic8xxx_kp *kp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) unsigned int ctrl_val, events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) rc = regmap_read(kp->regmap, KEYP_CTRL, &ctrl_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) dev_err(kp->dev, "failed to read keyp_ctrl register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) events = ctrl_val & KEYP_CTRL_EVNTS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) rc = pmic8xxx_kp_scan_matrix(kp, events);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) dev_err(kp->dev, "failed to scan matrix\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) static int pmic8xxx_kpd_init(struct pmic8xxx_kp *kp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) const struct device_node *of_node = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) unsigned int scan_delay_ms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) unsigned int row_hold_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) unsigned int debounce_ms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) int bits, rc, cycles;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) u8 scan_val = 0, ctrl_val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static const u8 row_bits[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* Find column bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (kp->num_cols < KEYP_CTRL_SCAN_COLS_MIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) bits = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) bits = kp->num_cols - KEYP_CTRL_SCAN_COLS_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) ctrl_val = (bits & KEYP_CTRL_SCAN_COLS_BITS) <<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) KEYP_CTRL_SCAN_COLS_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /* Find row bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (kp->num_rows < KEYP_CTRL_SCAN_ROWS_MIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) bits = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) bits = row_bits[kp->num_rows - KEYP_CTRL_SCAN_ROWS_MIN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ctrl_val |= (bits << KEYP_CTRL_SCAN_ROWS_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) rc = regmap_write(kp->regmap, KEYP_CTRL, ctrl_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) dev_err(kp->dev, "Error writing KEYP_CTRL reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (of_property_read_u32(of_node, "scan-delay", &scan_delay_ms))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) scan_delay_ms = MIN_SCAN_DELAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (scan_delay_ms > MAX_SCAN_DELAY || scan_delay_ms < MIN_SCAN_DELAY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) !is_power_of_2(scan_delay_ms)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) dev_err(&pdev->dev, "invalid keypad scan time supplied\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (of_property_read_u32(of_node, "row-hold", &row_hold_ns))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) row_hold_ns = MIN_ROW_HOLD_DELAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (row_hold_ns > MAX_ROW_HOLD_DELAY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) row_hold_ns < MIN_ROW_HOLD_DELAY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) ((row_hold_ns % MIN_ROW_HOLD_DELAY) != 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) dev_err(&pdev->dev, "invalid keypad row hold time supplied\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (of_property_read_u32(of_node, "debounce", &debounce_ms))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) debounce_ms = MIN_DEBOUNCE_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (((debounce_ms % 5) != 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) debounce_ms > MAX_DEBOUNCE_TIME ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) debounce_ms < MIN_DEBOUNCE_TIME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) dev_err(&pdev->dev, "invalid debounce time supplied\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) bits = (debounce_ms / 5) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) scan_val |= (bits << KEYP_SCAN_DBOUNCE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) bits = fls(scan_delay_ms) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) scan_val |= (bits << KEYP_SCAN_PAUSE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) /* Row hold time is a multiple of 32KHz cycles. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) cycles = (row_hold_ns * KEYP_CLOCK_FREQ) / NSEC_PER_SEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) scan_val |= (cycles << KEYP_SCAN_ROW_HOLD_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) rc = regmap_write(kp->regmap, KEYP_SCAN, scan_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) dev_err(kp->dev, "Error writing KEYP_SCAN reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static int pmic8xxx_kp_enable(struct pmic8xxx_kp *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) kp->ctrl_reg |= KEYP_CTRL_KEYP_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) rc = regmap_write(kp->regmap, KEYP_CTRL, kp->ctrl_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) dev_err(kp->dev, "Error writing KEYP_CTRL reg, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static int pmic8xxx_kp_disable(struct pmic8xxx_kp *kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) kp->ctrl_reg &= ~KEYP_CTRL_KEYP_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) rc = regmap_write(kp->regmap, KEYP_CTRL, kp->ctrl_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) static int pmic8xxx_kp_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) struct pmic8xxx_kp *kp = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return pmic8xxx_kp_enable(kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static void pmic8xxx_kp_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct pmic8xxx_kp *kp = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) pmic8xxx_kp_disable(kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * keypad controller should be initialized in the following sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * only, otherwise it might get into FSM stuck state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * - Initialize keypad control parameters, like no. of rows, columns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * timing values etc.,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * - configure rows and column gpios pull up/down.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) * - set irq edge type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * - enable the keypad controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static int pmic8xxx_kp_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct device_node *np = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) unsigned int rows, cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) bool repeat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) bool wakeup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct pmic8xxx_kp *kp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) unsigned int ctrl_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) rc = matrix_keypad_parse_properties(&pdev->dev, &rows, &cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (cols > PM8XXX_MAX_COLS || rows > PM8XXX_MAX_ROWS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) cols < PM8XXX_MIN_COLS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) dev_err(&pdev->dev, "invalid platform data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) repeat = !of_property_read_bool(np, "linux,input-no-autorepeat");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) wakeup = of_property_read_bool(np, "wakeup-source") ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* legacy name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) of_property_read_bool(np, "linux,keypad-wakeup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) kp = devm_kzalloc(&pdev->dev, sizeof(*kp), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (!kp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) kp->regmap = dev_get_regmap(pdev->dev.parent, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (!kp->regmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) platform_set_drvdata(pdev, kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) kp->num_rows = rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) kp->num_cols = cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) kp->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) kp->input = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (!kp->input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) dev_err(&pdev->dev, "unable to allocate input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) kp->key_sense_irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if (kp->key_sense_irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return kp->key_sense_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) kp->key_stuck_irq = platform_get_irq(pdev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (kp->key_stuck_irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return kp->key_stuck_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) kp->input->name = "PMIC8XXX keypad";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) kp->input->phys = "pmic8xxx_keypad/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) kp->input->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) kp->input->id.version = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) kp->input->id.product = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) kp->input->id.vendor = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) kp->input->open = pmic8xxx_kp_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) kp->input->close = pmic8xxx_kp_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) rc = matrix_keypad_build_keymap(NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) PM8XXX_MAX_ROWS, PM8XXX_MAX_COLS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) kp->keycodes, kp->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) dev_err(&pdev->dev, "failed to build keymap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (repeat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) __set_bit(EV_REP, kp->input->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) input_set_capability(kp->input, EV_MSC, MSC_SCAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) input_set_drvdata(kp->input, kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) /* initialize keypad state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) memset(kp->keystate, 0xff, sizeof(kp->keystate));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) memset(kp->stuckstate, 0xff, sizeof(kp->stuckstate));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) rc = pmic8xxx_kpd_init(kp, pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) dev_err(&pdev->dev, "unable to initialize keypad controller\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) rc = devm_request_any_context_irq(&pdev->dev, kp->key_sense_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) pmic8xxx_kp_irq, IRQF_TRIGGER_RISING, "pmic-keypad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) dev_err(&pdev->dev, "failed to request keypad sense irq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) rc = devm_request_any_context_irq(&pdev->dev, kp->key_stuck_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) pmic8xxx_kp_stuck_irq, IRQF_TRIGGER_RISING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) "pmic-keypad-stuck", kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) dev_err(&pdev->dev, "failed to request keypad stuck irq\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) rc = regmap_read(kp->regmap, KEYP_CTRL, &ctrl_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) dev_err(&pdev->dev, "failed to read KEYP_CTRL register\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) kp->ctrl_reg = ctrl_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) rc = input_register_device(kp->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) dev_err(&pdev->dev, "unable to register keypad input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) device_init_wakeup(&pdev->dev, wakeup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) static int pmic8xxx_kp_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) struct pmic8xxx_kp *kp = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct input_dev *input_dev = kp->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (device_may_wakeup(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) enable_irq_wake(kp->key_sense_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) if (input_dev->users)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) pmic8xxx_kp_disable(kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) static int pmic8xxx_kp_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) struct pmic8xxx_kp *kp = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) struct input_dev *input_dev = kp->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) if (device_may_wakeup(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) disable_irq_wake(kp->key_sense_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) if (input_dev->users)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) pmic8xxx_kp_enable(kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) static SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) pmic8xxx_kp_suspend, pmic8xxx_kp_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) static const struct of_device_id pm8xxx_match_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) { .compatible = "qcom,pm8058-keypad" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) { .compatible = "qcom,pm8921-keypad" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) MODULE_DEVICE_TABLE(of, pm8xxx_match_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) static struct platform_driver pmic8xxx_kp_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) .probe = pmic8xxx_kp_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) .name = "pm8xxx-keypad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) .pm = &pm8xxx_kp_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) .of_match_table = pm8xxx_match_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) module_platform_driver(pmic8xxx_kp_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) MODULE_DESCRIPTION("PMIC8XXX keypad driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) MODULE_ALIAS("platform:pmic8xxx_keypad");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) MODULE_AUTHOR("Trilok Soni <tsoni@codeaurora.org>");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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