Orange Pi5 kernel

^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)  * Samsung keypad driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2010 Samsung Electronics Co.Ltd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Author: Joonyoung Shim <jy0922.shim@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Author: Donghwa Lee <dh09.lee@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/input/samsung-keypad.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define SAMSUNG_KEYIFCON			0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define SAMSUNG_KEYIFSTSCLR			0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define SAMSUNG_KEYIFCOL			0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define SAMSUNG_KEYIFROW			0x0c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define SAMSUNG_KEYIFFC				0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) /* SAMSUNG_KEYIFCON */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define SAMSUNG_KEYIFCON_INT_F_EN		(1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define SAMSUNG_KEYIFCON_INT_R_EN		(1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define SAMSUNG_KEYIFCON_DF_EN			(1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define SAMSUNG_KEYIFCON_FC_EN			(1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define SAMSUNG_KEYIFCON_WAKEUPEN		(1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) /* SAMSUNG_KEYIFSTSCLR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define SAMSUNG_KEYIFSTSCLR_P_INT_MASK		(0xff << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define SAMSUNG_KEYIFSTSCLR_R_INT_MASK		(0xff << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define SAMSUNG_KEYIFSTSCLR_R_INT_OFFSET	8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define S5PV210_KEYIFSTSCLR_P_INT_MASK		(0x3fff << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define S5PV210_KEYIFSTSCLR_R_INT_MASK		(0x3fff << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define S5PV210_KEYIFSTSCLR_R_INT_OFFSET	16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) /* SAMSUNG_KEYIFCOL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define SAMSUNG_KEYIFCOL_MASK			(0xff << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define S5PV210_KEYIFCOLEN_MASK			(0xff << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) /* SAMSUNG_KEYIFROW */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define SAMSUNG_KEYIFROW_MASK			(0xff << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define S5PV210_KEYIFROW_MASK			(0x3fff << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) /* SAMSUNG_KEYIFFC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define SAMSUNG_KEYIFFC_MASK			(0x3ff << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) enum samsung_keypad_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	KEYPAD_TYPE_SAMSUNG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	KEYPAD_TYPE_S5PV210,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) struct samsung_keypad {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct platform_device *pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct clk *clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	wait_queue_head_t wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	bool stopped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	bool wake_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	enum samsung_keypad_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	unsigned int row_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	unsigned int rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	unsigned int cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	unsigned int row_state[SAMSUNG_MAX_COLS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	unsigned short keycodes[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) static void samsung_keypad_scan(struct samsung_keypad *keypad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 				unsigned int *row_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	unsigned int col;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	for (col = 0; col < keypad->cols; col++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (keypad->type == KEYPAD_TYPE_S5PV210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			val = S5PV210_KEYIFCOLEN_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			val &= ~(1 << col) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			val = SAMSUNG_KEYIFCOL_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			val &= ~(1 << col);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		writel(val, keypad->base + SAMSUNG_KEYIFCOL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		mdelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		val = readl(keypad->base + SAMSUNG_KEYIFROW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		row_state[col] = ~val & ((1 << keypad->rows) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	/* KEYIFCOL reg clear */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	writel(0, keypad->base + SAMSUNG_KEYIFCOL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static bool samsung_keypad_report(struct samsung_keypad *keypad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 				  unsigned int *row_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	struct input_dev *input_dev = keypad->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	unsigned int changed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	unsigned int pressed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	unsigned int key_down = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	unsigned int col, row;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	for (col = 0; col < keypad->cols; col++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		changed = row_state[col] ^ keypad->row_state[col];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		key_down |= row_state[col];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		if (!changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		for (row = 0; row < keypad->rows; row++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 			if (!(changed & (1 << row)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 				continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			pressed = row_state[col] & (1 << row);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 			dev_dbg(&keypad->input_dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 				"key %s, row: %d, col: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 				pressed ? "pressed" : "released", row, col);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			val = MATRIX_SCAN_CODE(row, col, keypad->row_shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 			input_event(input_dev, EV_MSC, MSC_SCAN, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 			input_report_key(input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 					keypad->keycodes[val], pressed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		input_sync(keypad->input_dev);
^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) 	memcpy(keypad->row_state, row_state, sizeof(keypad->row_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	return key_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static irqreturn_t samsung_keypad_irq(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	struct samsung_keypad *keypad = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	unsigned int row_state[SAMSUNG_MAX_COLS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	bool key_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	pm_runtime_get_sync(&keypad->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		val = readl(keypad->base + SAMSUNG_KEYIFSTSCLR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		/* Clear interrupt. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		writel(~0x0, keypad->base + SAMSUNG_KEYIFSTSCLR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		samsung_keypad_scan(keypad, row_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		key_down = samsung_keypad_report(keypad, row_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		if (key_down)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			wait_event_timeout(keypad->wait, keypad->stopped,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 					   msecs_to_jiffies(50));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	} while (key_down && !keypad->stopped);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	pm_runtime_put(&keypad->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static void samsung_keypad_start(struct samsung_keypad *keypad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	pm_runtime_get_sync(&keypad->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	/* Tell IRQ thread that it may poll the device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	keypad->stopped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	clk_enable(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	/* Enable interrupt bits. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	val = readl(keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	val |= SAMSUNG_KEYIFCON_INT_F_EN | SAMSUNG_KEYIFCON_INT_R_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	writel(val, keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	/* KEYIFCOL reg clear. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	writel(0, keypad->base + SAMSUNG_KEYIFCOL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	pm_runtime_put(&keypad->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) static void samsung_keypad_stop(struct samsung_keypad *keypad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	pm_runtime_get_sync(&keypad->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	/* Signal IRQ thread to stop polling and disable the handler. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	keypad->stopped = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	wake_up(&keypad->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	disable_irq(keypad->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	/* Clear interrupt. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	writel(~0x0, keypad->base + SAMSUNG_KEYIFSTSCLR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	/* Disable interrupt bits. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	val = readl(keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	val &= ~(SAMSUNG_KEYIFCON_INT_F_EN | SAMSUNG_KEYIFCON_INT_R_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	writel(val, keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	clk_disable(keypad->clk);
^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) 	 * Now that chip should not generate interrupts we can safely
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	 * re-enable the handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	enable_irq(keypad->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	pm_runtime_put(&keypad->pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int samsung_keypad_open(struct input_dev *input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	struct samsung_keypad *keypad = input_get_drvdata(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	samsung_keypad_start(keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static void samsung_keypad_close(struct input_dev *input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	struct samsung_keypad *keypad = input_get_drvdata(input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	samsung_keypad_stop(keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static struct samsung_keypad_platdata *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) samsung_keypad_parse_dt(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	struct samsung_keypad_platdata *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	struct matrix_keymap_data *keymap_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	uint32_t *keymap, num_rows = 0, num_cols = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	struct device_node *np = dev->of_node, *key_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	unsigned int key_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (!np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		dev_err(dev, "missing device tree data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	if (!pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		dev_err(dev, "could not allocate memory for platform data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		return ERR_PTR(-ENOMEM);
^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) 	of_property_read_u32(np, "samsung,keypad-num-rows", &num_rows);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	of_property_read_u32(np, "samsung,keypad-num-columns", &num_cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	if (!num_rows || !num_cols) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		dev_err(dev, "number of keypad rows/columns not specified\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	pdata->rows = num_rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	pdata->cols = num_cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	keymap_data = devm_kzalloc(dev, sizeof(*keymap_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	if (!keymap_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		dev_err(dev, "could not allocate memory for keymap data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	pdata->keymap_data = keymap_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	key_count = of_get_child_count(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	keymap_data->keymap_size = key_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	keymap = devm_kcalloc(dev, key_count, sizeof(uint32_t), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	if (!keymap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		dev_err(dev, "could not allocate memory for keymap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	keymap_data->keymap = keymap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	for_each_child_of_node(np, key_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		u32 row, col, key_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		of_property_read_u32(key_np, "keypad,row", &row);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		of_property_read_u32(key_np, "keypad,column", &col);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		of_property_read_u32(key_np, "linux,code", &key_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 		*keymap++ = KEY(row, col, key_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	if (of_get_property(np, "linux,input-no-autorepeat", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		pdata->no_autorepeat = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	pdata->wakeup = of_property_read_bool(np, "wakeup-source") ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 			/* legacy name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 			of_property_read_bool(np, "linux,input-wakeup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	return pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) static struct samsung_keypad_platdata *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) samsung_keypad_parse_dt(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	dev_err(dev, "no platform data defined\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) static int samsung_keypad_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	const struct samsung_keypad_platdata *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	const struct matrix_keymap_data *keymap_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	struct samsung_keypad *keypad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	unsigned int row_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	unsigned int keymap_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	if (!pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		pdata = samsung_keypad_parse_dt(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		if (IS_ERR(pdata))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 			return PTR_ERR(pdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	keymap_data = pdata->keymap_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	if (!keymap_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		dev_err(&pdev->dev, "no keymap data defined\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	if (!pdata->rows || pdata->rows > SAMSUNG_MAX_ROWS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	if (!pdata->cols || pdata->cols > SAMSUNG_MAX_COLS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	/* initialize the gpio */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	if (pdata->cfg_gpio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		pdata->cfg_gpio(pdata->rows, pdata->cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	row_shift = get_count_order(pdata->cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	keymap_size = (pdata->rows << row_shift) * sizeof(keypad->keycodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad) + keymap_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 			      GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	input_dev = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	if (!keypad || !input_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	keypad->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	if (!keypad->base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 		return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	keypad->clk = devm_clk_get(&pdev->dev, "keypad");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	if (IS_ERR(keypad->clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		dev_err(&pdev->dev, "failed to get keypad clk\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		return PTR_ERR(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	error = clk_prepare(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		dev_err(&pdev->dev, "keypad clock prepare failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	keypad->input_dev = input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	keypad->pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	keypad->row_shift = row_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	keypad->rows = pdata->rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	keypad->cols = pdata->cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	keypad->stopped = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	init_waitqueue_head(&keypad->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	if (pdev->dev.of_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		keypad->type = of_device_is_compatible(pdev->dev.of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 					"samsung,s5pv210-keypad");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		keypad->type = platform_get_device_id(pdev)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	input_dev->name = pdev->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	input_dev->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	input_dev->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	input_dev->open = samsung_keypad_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	input_dev->close = samsung_keypad_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	error = matrix_keypad_build_keymap(keymap_data, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 					   pdata->rows, pdata->cols,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 					   keypad->keycodes, input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		dev_err(&pdev->dev, "failed to build keymap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		goto err_unprepare_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	if (!pdata->no_autorepeat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		__set_bit(EV_REP, input_dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 	input_set_drvdata(input_dev, keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	keypad->irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	if (keypad->irq < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 		error = keypad->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 		goto err_unprepare_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 	error = devm_request_threaded_irq(&pdev->dev, keypad->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 					  samsung_keypad_irq, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 					  dev_name(&pdev->dev), keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 		dev_err(&pdev->dev, "failed to register keypad interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 		goto err_unprepare_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	device_init_wakeup(&pdev->dev, pdata->wakeup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	platform_set_drvdata(pdev, keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	pm_runtime_enable(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 	error = input_register_device(keypad->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 		goto err_disable_runtime_pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	if (pdev->dev.of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 		devm_kfree(&pdev->dev, (void *)pdata->keymap_data->keymap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 		devm_kfree(&pdev->dev, (void *)pdata->keymap_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 		devm_kfree(&pdev->dev, (void *)pdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) err_disable_runtime_pm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	pm_runtime_disable(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) err_unprepare_clk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	clk_unprepare(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 	return error;
^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) static int samsung_keypad_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 	struct samsung_keypad *keypad = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 	pm_runtime_disable(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	input_unregister_device(keypad->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	clk_unprepare(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static int samsung_keypad_runtime_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 	struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 	struct samsung_keypad *keypad = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 	if (keypad->stopped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 	/* This may fail on some SoCs due to lack of controller support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	error = enable_irq_wake(keypad->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 	if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 		keypad->wake_enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 	val = readl(keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 	val |= SAMSUNG_KEYIFCON_WAKEUPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 	writel(val, keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 	clk_disable(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) static int samsung_keypad_runtime_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 	struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 	struct samsung_keypad *keypad = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 	if (keypad->stopped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 	clk_enable(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 	val = readl(keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	val &= ~SAMSUNG_KEYIFCON_WAKEUPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 	writel(val, keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 	if (keypad->wake_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 		disable_irq_wake(keypad->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) static void samsung_keypad_toggle_wakeup(struct samsung_keypad *keypad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) 					 bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) 	clk_enable(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 	val = readl(keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 	if (enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 		val |= SAMSUNG_KEYIFCON_WAKEUPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 		if (device_may_wakeup(&keypad->pdev->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 			enable_irq_wake(keypad->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) 		val &= ~SAMSUNG_KEYIFCON_WAKEUPEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 		if (device_may_wakeup(&keypad->pdev->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) 			disable_irq_wake(keypad->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) 	writel(val, keypad->base + SAMSUNG_KEYIFCON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) 	clk_disable(keypad->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) static int samsung_keypad_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) 	struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 	struct samsung_keypad *keypad = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) 	struct input_dev *input_dev = keypad->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) 	mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) 	if (input_dev->users)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) 		samsung_keypad_stop(keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) 	samsung_keypad_toggle_wakeup(keypad, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) 	mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static int samsung_keypad_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) 	struct platform_device *pdev = to_platform_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) 	struct samsung_keypad *keypad = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) 	struct input_dev *input_dev = keypad->input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) 	mutex_lock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) 	samsung_keypad_toggle_wakeup(keypad, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) 	if (input_dev->users)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) 		samsung_keypad_start(keypad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) 	mutex_unlock(&input_dev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) static const struct dev_pm_ops samsung_keypad_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) 	SET_SYSTEM_SLEEP_PM_OPS(samsung_keypad_suspend, samsung_keypad_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) 	SET_RUNTIME_PM_OPS(samsung_keypad_runtime_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) 			   samsung_keypad_runtime_resume, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) static const struct of_device_id samsung_keypad_dt_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) 	{ .compatible = "samsung,s3c6410-keypad" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) 	{ .compatible = "samsung,s5pv210-keypad" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) MODULE_DEVICE_TABLE(of, samsung_keypad_dt_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) static const struct platform_device_id samsung_keypad_driver_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) 		.name		= "samsung-keypad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) 		.driver_data	= KEYPAD_TYPE_SAMSUNG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) 	}, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) 		.name		= "s5pv210-keypad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) 		.driver_data	= KEYPAD_TYPE_S5PV210,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) MODULE_DEVICE_TABLE(platform, samsung_keypad_driver_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static struct platform_driver samsung_keypad_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) 	.probe		= samsung_keypad_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) 	.remove		= samsung_keypad_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) 		.name	= "samsung-keypad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) 		.of_match_table = of_match_ptr(samsung_keypad_dt_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) 		.pm	= &samsung_keypad_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) 	.id_table	= samsung_keypad_driver_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) module_platform_driver(samsung_keypad_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) MODULE_DESCRIPTION("Samsung keypad driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) MODULE_LICENSE("GPL");