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path: root/drivers/input/serio/sa1111ps2.c
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Diffstat (limited to 'drivers/input/serio/sa1111ps2.c')
-rw-r--r--drivers/input/serio/sa1111ps2.c69
1 files changed, 41 insertions, 28 deletions
diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c
index b3e688911fd9..f9e5c793f4f0 100644
--- a/drivers/input/serio/sa1111ps2.c
+++ b/drivers/input/serio/sa1111ps2.c
@@ -47,6 +47,8 @@ struct ps2if {
struct serio *io;
struct sa1111_dev *dev;
void __iomem *base;
+ int rx_irq;
+ int tx_irq;
unsigned int open;
spinlock_t lock;
unsigned int head;
@@ -64,22 +66,22 @@ static irqreturn_t ps2_rxint(int irq, void *dev_id)
struct ps2if *ps2if = dev_id;
unsigned int scancode, flag, status;
- status = sa1111_readl(ps2if->base + PS2STAT);
+ status = readl_relaxed(ps2if->base + PS2STAT);
while (status & PS2STAT_RXF) {
if (status & PS2STAT_STP)
- sa1111_writel(PS2STAT_STP, ps2if->base + PS2STAT);
+ writel_relaxed(PS2STAT_STP, ps2if->base + PS2STAT);
flag = (status & PS2STAT_STP ? SERIO_FRAME : 0) |
(status & PS2STAT_RXP ? 0 : SERIO_PARITY);
- scancode = sa1111_readl(ps2if->base + PS2DATA) & 0xff;
+ scancode = readl_relaxed(ps2if->base + PS2DATA) & 0xff;
if (hweight8(scancode) & 1)
flag ^= SERIO_PARITY;
serio_interrupt(ps2if->io, scancode, flag);
- status = sa1111_readl(ps2if->base + PS2STAT);
+ status = readl_relaxed(ps2if->base + PS2STAT);
}
return IRQ_HANDLED;
@@ -94,12 +96,12 @@ static irqreturn_t ps2_txint(int irq, void *dev_id)
unsigned int status;
spin_lock(&ps2if->lock);
- status = sa1111_readl(ps2if->base + PS2STAT);
+ status = readl_relaxed(ps2if->base + PS2STAT);
if (ps2if->head == ps2if->tail) {
disable_irq_nosync(irq);
/* done */
} else if (status & PS2STAT_TXE) {
- sa1111_writel(ps2if->buf[ps2if->tail], ps2if->base + PS2DATA);
+ writel_relaxed(ps2if->buf[ps2if->tail], ps2if->base + PS2DATA);
ps2if->tail = (ps2if->tail + 1) & (sizeof(ps2if->buf) - 1);
}
spin_unlock(&ps2if->lock);
@@ -122,11 +124,11 @@ static int ps2_write(struct serio *io, unsigned char val)
/*
* If the TX register is empty, we can go straight out.
*/
- if (sa1111_readl(ps2if->base + PS2STAT) & PS2STAT_TXE) {
- sa1111_writel(val, ps2if->base + PS2DATA);
+ if (readl_relaxed(ps2if->base + PS2STAT) & PS2STAT_TXE) {
+ writel_relaxed(val, ps2if->base + PS2DATA);
} else {
if (ps2if->head == ps2if->tail)
- enable_irq(ps2if->dev->irq[1]);
+ enable_irq(ps2if->tx_irq);
head = (ps2if->head + 1) & (sizeof(ps2if->buf) - 1);
if (head != ps2if->tail) {
ps2if->buf[ps2if->head] = val;
@@ -147,30 +149,30 @@ static int ps2_open(struct serio *io)
if (ret)
return ret;
- ret = request_irq(ps2if->dev->irq[0], ps2_rxint, 0,
+ ret = request_irq(ps2if->rx_irq, ps2_rxint, 0,
SA1111_DRIVER_NAME(ps2if->dev), ps2if);
if (ret) {
printk(KERN_ERR "sa1111ps2: could not allocate IRQ%d: %d\n",
- ps2if->dev->irq[0], ret);
+ ps2if->rx_irq, ret);
sa1111_disable_device(ps2if->dev);
return ret;
}
- ret = request_irq(ps2if->dev->irq[1], ps2_txint, 0,
+ ret = request_irq(ps2if->tx_irq, ps2_txint, 0,
SA1111_DRIVER_NAME(ps2if->dev), ps2if);
if (ret) {
printk(KERN_ERR "sa1111ps2: could not allocate IRQ%d: %d\n",
- ps2if->dev->irq[1], ret);
- free_irq(ps2if->dev->irq[0], ps2if);
+ ps2if->tx_irq, ret);
+ free_irq(ps2if->rx_irq, ps2if);
sa1111_disable_device(ps2if->dev);
return ret;
}
ps2if->open = 1;
- enable_irq_wake(ps2if->dev->irq[0]);
+ enable_irq_wake(ps2if->rx_irq);
- sa1111_writel(PS2CR_ENA, ps2if->base + PS2CR);
+ writel_relaxed(PS2CR_ENA, ps2if->base + PS2CR);
return 0;
}
@@ -178,14 +180,14 @@ static void ps2_close(struct serio *io)
{
struct ps2if *ps2if = io->port_data;
- sa1111_writel(0, ps2if->base + PS2CR);
+ writel_relaxed(0, ps2if->base + PS2CR);
- disable_irq_wake(ps2if->dev->irq[0]);
+ disable_irq_wake(ps2if->rx_irq);
ps2if->open = 0;
- free_irq(ps2if->dev->irq[1], ps2if);
- free_irq(ps2if->dev->irq[0], ps2if);
+ free_irq(ps2if->tx_irq, ps2if);
+ free_irq(ps2if->rx_irq, ps2if);
sa1111_disable_device(ps2if->dev);
}
@@ -198,7 +200,7 @@ static void ps2_clear_input(struct ps2if *ps2if)
int maxread = 100;
while (maxread--) {
- if ((sa1111_readl(ps2if->base + PS2DATA) & 0xff) == 0xff)
+ if ((readl_relaxed(ps2if->base + PS2DATA) & 0xff) == 0xff)
break;
}
}
@@ -208,11 +210,11 @@ static unsigned int ps2_test_one(struct ps2if *ps2if,
{
unsigned int val;
- sa1111_writel(PS2CR_ENA | mask, ps2if->base + PS2CR);
+ writel_relaxed(PS2CR_ENA | mask, ps2if->base + PS2CR);
- udelay(2);
+ udelay(10);
- val = sa1111_readl(ps2if->base + PS2STAT);
+ val = readl_relaxed(ps2if->base + PS2STAT);
return val & (PS2STAT_KBC | PS2STAT_KBD);
}
@@ -243,7 +245,7 @@ static int ps2_test(struct ps2if *ps2if)
ret = -ENODEV;
}
- sa1111_writel(0, ps2if->base + PS2CR);
+ writel_relaxed(0, ps2if->base + PS2CR);
return ret;
}
@@ -264,7 +266,6 @@ static int ps2_probe(struct sa1111_dev *dev)
goto free;
}
-
serio->id.type = SERIO_8042;
serio->write = ps2_write;
serio->open = ps2_open;
@@ -279,6 +280,18 @@ static int ps2_probe(struct sa1111_dev *dev)
spin_lock_init(&ps2if->lock);
+ ps2if->rx_irq = sa1111_get_irq(dev, 0);
+ if (ps2if->rx_irq <= 0) {
+ ret = ps2if->rx_irq ? : -ENXIO;
+ goto free;
+ }
+
+ ps2if->tx_irq = sa1111_get_irq(dev, 1);
+ if (ps2if->tx_irq <= 0) {
+ ret = ps2if->tx_irq ? : -ENXIO;
+ goto free;
+ }
+
/*
* Request the physical region for this PS2 port.
*/
@@ -297,8 +310,8 @@ static int ps2_probe(struct sa1111_dev *dev)
sa1111_enable_device(ps2if->dev);
/* Incoming clock is 8MHz */
- sa1111_writel(0, ps2if->base + PS2CLKDIV);
- sa1111_writel(127, ps2if->base + PS2PRECNT);
+ writel_relaxed(0, ps2if->base + PS2CLKDIV);
+ writel_relaxed(127, ps2if->base + PS2PRECNT);
/*
* Flush any pending input.
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.