^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/drivers/input/keyboard/omap-keypad.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * OMAP Keypad Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2003 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Written by Timo Teräs <ext-timo.teras@nokia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Added support for H2 & H3 Keypad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright (C) 2004 Texas Instruments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/platform_data/gpio-omap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/platform_data/keypad-omap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #undef NEW_BOARD_LEARNING_MODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static void omap_kp_tasklet(unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static void omap_kp_timer(struct timer_list *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static unsigned char keypad_state[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static DEFINE_MUTEX(kp_enable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int kp_enable = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int kp_cur_group = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct omap_kp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned int rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) unsigned int cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned long delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) unsigned int debounce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) unsigned short keymap[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static DECLARE_TASKLET_DISABLED_OLD(kp_tasklet, omap_kp_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static unsigned int *row_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static unsigned int *col_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static irqreturn_t omap_kp_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* disable keyboard interrupt and schedule for handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) tasklet_schedule(&kp_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static void omap_kp_timer(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) tasklet_schedule(&kp_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int col = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* disable keyboard interrupt and schedule for handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* read the keypad status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) for (col = 0; col < omap_kp->cols; col++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) omap_writew(~(1 << col) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) udelay(omap_kp->delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) state[col] = ~omap_readw(OMAP1_MPUIO_BASE +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) OMAP_MPUIO_KBR_LATCH) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) omap_writew(0x00, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) udelay(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static void omap_kp_tasklet(unsigned long data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct omap_kp *omap_kp_data = (struct omap_kp *) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) unsigned short *keycodes = omap_kp_data->input->keycode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) unsigned int row_shift = get_count_order(omap_kp_data->cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned char new_state[8], changed, key_down = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int col, row;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* check for any changes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) omap_kp_scan_keypad(omap_kp_data, new_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /* check for changes and print those */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) for (col = 0; col < omap_kp_data->cols; col++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) changed = new_state[col] ^ keypad_state[col];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) key_down |= new_state[col];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (changed == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) for (row = 0; row < omap_kp_data->rows; row++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!(changed & (1 << row)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #ifdef NEW_BOARD_LEARNING_MODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) printk(KERN_INFO "omap-keypad: key %d-%d %s\n", col,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) row, (new_state[col] & (1 << row)) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) "pressed" : "released");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) key = keycodes[MATRIX_SCAN_CODE(row, col, row_shift)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (!(kp_cur_group == (key & GROUP_MASK) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) kp_cur_group == -1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) kp_cur_group = key & GROUP_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) input_report_key(omap_kp_data->input, key & ~GROUP_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) new_state[col] & (1 << row));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) input_sync(omap_kp_data->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) memcpy(keypad_state, new_state, sizeof(keypad_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (key_down) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /* some key is pressed - keep irq disabled and use timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * to poll the keypad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) mod_timer(&omap_kp_data->timer, jiffies + HZ / 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /* enable interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) kp_cur_group = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static ssize_t omap_kp_enable_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return sprintf(buf, "%u\n", kp_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static ssize_t omap_kp_enable_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct omap_kp *omap_kp = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (sscanf(buf, "%u", &state) != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if ((state != 1) && (state != 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) mutex_lock(&kp_enable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (state != kp_enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) enable_irq(omap_kp->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) disable_irq(omap_kp->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) kp_enable = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) mutex_unlock(&kp_enable_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return strnlen(buf, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, omap_kp_enable_show, omap_kp_enable_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static int omap_kp_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct omap_kp *omap_kp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct omap_kp_platform_data *pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int i, col_idx, row_idx, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) unsigned int row_shift, keycodemax;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (!pdata->rows || !pdata->cols || !pdata->keymap_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) printk(KERN_ERR "No rows, cols or keymap_data from pdata\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) row_shift = get_count_order(pdata->cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) keycodemax = pdata->rows << row_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) omap_kp = kzalloc(sizeof(struct omap_kp) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) keycodemax * sizeof(unsigned short), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) input_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (!omap_kp || !input_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) kfree(omap_kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) input_free_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return -ENOMEM;
^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) platform_set_drvdata(pdev, omap_kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) omap_kp->input = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* Disable the interrupt for the MPUIO keyboard */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (pdata->delay)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) omap_kp->delay = pdata->delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (pdata->row_gpios && pdata->col_gpios) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) row_gpios = pdata->row_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) col_gpios = pdata->col_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) omap_kp->rows = pdata->rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) omap_kp->cols = pdata->cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) col_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) row_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) timer_setup(&omap_kp->timer, omap_kp_timer, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) /* get the irq and init timer*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) kp_tasklet.data = (unsigned long) omap_kp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) tasklet_enable(&kp_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ret = device_create_file(&pdev->dev, &dev_attr_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* setup input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) input_dev->name = "omap-keypad";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) input_dev->phys = "omap-keypad/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) input_dev->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) input_dev->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) input_dev->id.vendor = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) input_dev->id.product = 0x0001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) input_dev->id.version = 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (pdata->rep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) __set_bit(EV_REP, input_dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) ret = matrix_keypad_build_keymap(pdata->keymap_data, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) pdata->rows, pdata->cols,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) omap_kp->keymap, input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) goto err3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) ret = input_register_device(omap_kp->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) printk(KERN_ERR "Unable to register omap-keypad input device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) goto err3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (pdata->dbounce)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_GPIO_DEBOUNCING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /* scan current status and enable interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) omap_kp_scan_keypad(omap_kp, keypad_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) omap_kp->irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (omap_kp->irq >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (request_irq(omap_kp->irq, omap_kp_interrupt, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) "omap-keypad", omap_kp) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) goto err4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) err4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) input_unregister_device(omap_kp->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) input_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) err3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) device_remove_file(&pdev->dev, &dev_attr_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) for (i = row_idx - 1; i >= 0; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) gpio_free(row_gpios[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) for (i = col_idx - 1; i >= 0; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) gpio_free(col_gpios[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) kfree(omap_kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) input_free_device(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static int omap_kp_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct omap_kp *omap_kp = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* disable keypad interrupt handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) tasklet_disable(&kp_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) free_irq(omap_kp->irq, omap_kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) del_timer_sync(&omap_kp->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) tasklet_kill(&kp_tasklet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /* unregister everything */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) input_unregister_device(omap_kp->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) kfree(omap_kp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static struct platform_driver omap_kp_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .probe = omap_kp_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) .remove = omap_kp_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) .name = "omap-keypad",
^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) module_platform_driver(omap_kp_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) MODULE_AUTHOR("Timo Teräs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) MODULE_DESCRIPTION("OMAP Keypad Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) MODULE_ALIAS("platform:omap-keypad");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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