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)  * OLPC serio driver for multiplexed input from Marvell MMP security processor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2011-2013 One Laptop Per Child
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * The OLPC XO-1.75 and XO-4 laptops do not have a hardware PS/2 controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * Instead, the OLPC firmware runs a bit-banging PS/2 implementation on an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * otherwise-unused slow processor which is included in the Marvell MMP2/MMP3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * SoC, known as the "Security Processor" (SP) or "Wireless Trusted Module"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  * (WTM). This firmware then reports its results via the WTM registers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  * which we read from the Application Processor (AP, i.e. main CPU) in this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * On the hardware side we have a PS/2 mouse and an AT keyboard, the data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  * is multiplexed through this system. We create a serio port for each one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  * and demultiplex the data accordingly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) /* WTM register offsets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define SECURE_PROCESSOR_COMMAND	0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define COMMAND_RETURN_STATUS		0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define COMMAND_FIFO_STATUS		0xc4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define PJ_RST_INTERRUPT		0xc8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define PJ_INTERRUPT_MASK		0xcc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40)  * The upper byte of SECURE_PROCESSOR_COMMAND and COMMAND_RETURN_STATUS is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41)  * used to identify which port (device) is being talked to. The lower byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42)  * is the data being sent/received.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define PORT_MASK	0xff00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define DATA_MASK	0x00ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define PORT_SHIFT	8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define KEYBOARD_PORT	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define TOUCHPAD_PORT	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) /* COMMAND_FIFO_STATUS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define CMD_CNTR_MASK		0x7 /* Number of pending/unprocessed commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define MAX_PENDING_CMDS	4   /* from device specs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) /* PJ_RST_INTERRUPT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define SP_COMMAND_COMPLETE_RESET	0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) /* PJ_INTERRUPT_MASK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) #define INT_0	(1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) /* COMMAND_FIFO_STATUS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #define CMD_STS_MASK	0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) struct olpc_apsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct serio *kbio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	struct serio *padio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	int open_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) static int olpc_apsp_write(struct serio *port, unsigned char val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	struct olpc_apsp *priv = port->port_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	u32 which = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	if (port == priv->padio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		which = TOUCHPAD_PORT << PORT_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		which = KEYBOARD_PORT << PORT_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	dev_dbg(priv->dev, "olpc_apsp_write which=%x val=%x\n", which, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	for (i = 0; i < 50; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		u32 sts = readl(priv->base + COMMAND_FIFO_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if ((sts & CMD_CNTR_MASK) < MAX_PENDING_CMDS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			writel(which | val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			       priv->base + SECURE_PROCESSOR_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		/* SP busy. This has not been seen in practice. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		mdelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	dev_dbg(priv->dev, "olpc_apsp_write timeout, status=%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		readl(priv->base + COMMAND_FIFO_STATUS));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	return -ETIMEDOUT;
^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) static irqreturn_t olpc_apsp_rx(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct olpc_apsp *priv = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	unsigned int w, tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	struct serio *serio;
^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) 	 * Write 1 to PJ_RST_INTERRUPT to acknowledge and clear the interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	 * Write 0xff00 to SECURE_PROCESSOR_COMMAND.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	tmp = readl(priv->base + PJ_RST_INTERRUPT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (!(tmp & SP_COMMAND_COMPLETE_RESET)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		dev_warn(priv->dev, "spurious interrupt?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return IRQ_NONE;
^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) 	w = readl(priv->base + COMMAND_RETURN_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	dev_dbg(priv->dev, "olpc_apsp_rx %x\n", w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	if (w >> PORT_SHIFT == KEYBOARD_PORT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		serio = priv->kbio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		serio = priv->padio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	serio_interrupt(serio, w & DATA_MASK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	/* Ack and clear interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	writel(tmp | SP_COMMAND_COMPLETE_RESET, priv->base + PJ_RST_INTERRUPT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	writel(PORT_MASK, priv->base + SECURE_PROCESSOR_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	pm_wakeup_event(priv->dev, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static int olpc_apsp_open(struct serio *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	struct olpc_apsp *priv = port->port_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	unsigned int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	unsigned long l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	if (priv->open_count++ == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		l = readl(priv->base + COMMAND_FIFO_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		if (!(l & CMD_STS_MASK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			dev_err(priv->dev, "SP cannot accept commands.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			return -EIO;
^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) 		/* Enable interrupt 0 by clearing its bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		tmp = readl(priv->base + PJ_INTERRUPT_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		writel(tmp & ~INT_0, priv->base + PJ_INTERRUPT_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static void olpc_apsp_close(struct serio *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	struct olpc_apsp *priv = port->port_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	unsigned int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	if (--priv->open_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		/* Disable interrupt 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		tmp = readl(priv->base + PJ_INTERRUPT_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		writel(tmp | INT_0, priv->base + PJ_INTERRUPT_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	}
^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) static int olpc_apsp_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	struct serio *kb_serio, *pad_serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	struct olpc_apsp *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	priv = devm_kzalloc(&pdev->dev, sizeof(struct olpc_apsp), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	priv->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	priv->base = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (IS_ERR(priv->base)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		dev_err(&pdev->dev, "Failed to map WTM registers\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		return PTR_ERR(priv->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	priv->irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (priv->irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		return priv->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	/* KEYBOARD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	kb_serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (!kb_serio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	kb_serio->id.type	= SERIO_8042_XL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	kb_serio->write		= olpc_apsp_write;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	kb_serio->open		= olpc_apsp_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	kb_serio->close		= olpc_apsp_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	kb_serio->port_data	= priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	kb_serio->dev.parent	= &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	strlcpy(kb_serio->name, "sp keyboard", sizeof(kb_serio->name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	strlcpy(kb_serio->phys, "sp/serio0", sizeof(kb_serio->phys));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	priv->kbio		= kb_serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	serio_register_port(kb_serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	/* TOUCHPAD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	pad_serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	if (!pad_serio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		goto err_pad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	pad_serio->id.type	= SERIO_8042;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	pad_serio->write	= olpc_apsp_write;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	pad_serio->open		= olpc_apsp_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	pad_serio->close	= olpc_apsp_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	pad_serio->port_data	= priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	pad_serio->dev.parent	= &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	strlcpy(pad_serio->name, "sp touchpad", sizeof(pad_serio->name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	strlcpy(pad_serio->phys, "sp/serio1", sizeof(pad_serio->phys));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	priv->padio		= pad_serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	serio_register_port(pad_serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	error = request_irq(priv->irq, olpc_apsp_rx, 0, "olpc-apsp", priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		dev_err(&pdev->dev, "Failed to request IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		goto err_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	device_init_wakeup(priv->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	platform_set_drvdata(pdev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	dev_dbg(&pdev->dev, "probed successfully.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) err_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	serio_unregister_port(pad_serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) err_pad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	serio_unregister_port(kb_serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int olpc_apsp_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	struct olpc_apsp *priv = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	free_irq(priv->irq, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	serio_unregister_port(priv->kbio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	serio_unregister_port(priv->padio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static const struct of_device_id olpc_apsp_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	{ .compatible = "olpc,ap-sp", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) MODULE_DEVICE_TABLE(of, olpc_apsp_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static struct platform_driver olpc_apsp_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	.probe		= olpc_apsp_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	.remove		= olpc_apsp_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		.name	= "olpc-apsp",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		.of_match_table = olpc_apsp_dt_ids,
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) MODULE_DESCRIPTION("OLPC AP-SP serio driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) module_platform_driver(olpc_apsp_driver);