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path: root/drivers/input/serio/i8042.c
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Diffstat (limited to 'drivers/input/serio/i8042.c')
-rw-r--r--drivers/input/serio/i8042.c98
1 files changed, 48 insertions, 50 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 18db5a8c747..ac4c93689ab 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -10,6 +10,8 @@
* the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/module.h>
@@ -61,6 +63,10 @@ static bool i8042_noloop;
module_param_named(noloop, i8042_noloop, bool, 0);
MODULE_PARM_DESC(noloop, "Disable the AUX Loopback command while probing for the AUX port");
+static bool i8042_notimeout;
+module_param_named(notimeout, i8042_notimeout, bool, 0);
+MODULE_PARM_DESC(notimeout, "Ignore timeouts signalled by i8042");
+
#ifdef CONFIG_X86
static bool i8042_dritek;
module_param_named(dritek, i8042_dritek, bool, 0);
@@ -225,8 +231,8 @@ static int i8042_flush(void)
udelay(50);
data = i8042_read_data();
i++;
- dbg("%02x <- i8042 (flush, %s)", data,
- str & I8042_STR_AUXDATA ? "aux" : "kbd");
+ dbg("%02x <- i8042 (flush, %s)\n",
+ data, str & I8042_STR_AUXDATA ? "aux" : "kbd");
}
spin_unlock_irqrestore(&i8042_lock, flags);
@@ -253,32 +259,32 @@ static int __i8042_command(unsigned char *param, int command)
if (error)
return error;
- dbg("%02x -> i8042 (command)", command & 0xff);
+ dbg("%02x -> i8042 (command)\n", command & 0xff);
i8042_write_command(command & 0xff);
for (i = 0; i < ((command >> 12) & 0xf); i++) {
error = i8042_wait_write();
if (error)
return error;
- dbg("%02x -> i8042 (parameter)", param[i]);
+ dbg("%02x -> i8042 (parameter)\n", param[i]);
i8042_write_data(param[i]);
}
for (i = 0; i < ((command >> 8) & 0xf); i++) {
error = i8042_wait_read();
if (error) {
- dbg(" -- i8042 (timeout)");
+ dbg(" -- i8042 (timeout)\n");
return error;
}
if (command == I8042_CMD_AUX_LOOP &&
!(i8042_read_status() & I8042_STR_AUXDATA)) {
- dbg(" -- i8042 (auxerr)");
+ dbg(" -- i8042 (auxerr)\n");
return -1;
}
param[i] = i8042_read_data();
- dbg("%02x <- i8042 (return)", param[i]);
+ dbg("%02x <- i8042 (return)\n", param[i]);
}
return 0;
@@ -309,7 +315,7 @@ static int i8042_kbd_write(struct serio *port, unsigned char c)
spin_lock_irqsave(&i8042_lock, flags);
if (!(retval = i8042_wait_write())) {
- dbg("%02x -> i8042 (kbd-data)", c);
+ dbg("%02x -> i8042 (kbd-data)\n", c);
i8042_write_data(c);
}
@@ -355,17 +361,14 @@ static void i8042_port_close(struct serio *serio)
i8042_ctr &= ~irq_bit;
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR))
- printk(KERN_WARNING
- "i8042.c: Can't write CTR while closing %s port.\n",
- port_name);
+ pr_warn("Can't write CTR while closing %s port\n", port_name);
udelay(50);
i8042_ctr &= ~disable_bit;
i8042_ctr |= irq_bit;
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR))
- printk(KERN_ERR "i8042.c: Can't reactivate %s port.\n",
- port_name);
+ pr_err("Can't reactivate %s port\n", port_name);
/*
* See if there is any data appeared while we were messing with
@@ -456,7 +459,8 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)
str = i8042_read_status();
if (unlikely(~str & I8042_STR_OBF)) {
spin_unlock_irqrestore(&i8042_lock, flags);
- if (irq) dbg("Interrupt %d, without any data", irq);
+ if (irq)
+ dbg("Interrupt %d, without any data\n", irq);
ret = 0;
goto out;
}
@@ -469,7 +473,8 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)
dfl = 0;
if (str & I8042_STR_MUXERR) {
- dbg("MUX error, status is %02x, data is %02x", str, data);
+ dbg("MUX error, status is %02x, data is %02x\n",
+ str, data);
/*
* When MUXERR condition is signalled the data register can only contain
* 0xfd, 0xfe or 0xff if implementation follows the spec. Unfortunately
@@ -503,7 +508,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)
} else {
dfl = ((str & I8042_STR_PARITY) ? SERIO_PARITY : 0) |
- ((str & I8042_STR_TIMEOUT) ? SERIO_TIMEOUT : 0);
+ ((str & I8042_STR_TIMEOUT && !i8042_notimeout) ? SERIO_TIMEOUT : 0);
port_no = (str & I8042_STR_AUXDATA) ?
I8042_AUX_PORT_NO : I8042_KBD_PORT_NO;
@@ -512,7 +517,7 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id)
port = &i8042_ports[port_no];
serio = port->exists ? port->serio : NULL;
- dbg("%02x <- i8042 (interrupt, %d, %d%s%s)",
+ dbg("%02x <- i8042 (interrupt, %d, %d%s%s)\n",
data, port_no, irq,
dfl & SERIO_PARITY ? ", bad parity" : "",
dfl & SERIO_TIMEOUT ? ", timeout" : "");
@@ -540,7 +545,7 @@ static int i8042_enable_kbd_port(void)
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
i8042_ctr &= ~I8042_CTR_KBDINT;
i8042_ctr |= I8042_CTR_KBDDIS;
- printk(KERN_ERR "i8042.c: Failed to enable KBD port.\n");
+ pr_err("Failed to enable KBD port\n");
return -EIO;
}
@@ -559,7 +564,7 @@ static int i8042_enable_aux_port(void)
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
i8042_ctr &= ~I8042_CTR_AUXINT;
i8042_ctr |= I8042_CTR_AUXDIS;
- printk(KERN_ERR "i8042.c: Failed to enable AUX port.\n");
+ pr_err("Failed to enable AUX port\n");
return -EIO;
}
@@ -641,7 +646,7 @@ static int __init i8042_check_mux(void)
if (i8042_set_mux_mode(true, &mux_version))
return -1;
- printk(KERN_INFO "i8042.c: Detected active multiplexing controller, rev %d.%d.\n",
+ pr_info("Detected active multiplexing controller, rev %d.%d\n",
(mux_version >> 4) & 0xf, mux_version & 0xf);
/*
@@ -651,7 +656,7 @@ static int __init i8042_check_mux(void)
i8042_ctr &= ~I8042_CTR_AUXINT;
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
- printk(KERN_ERR "i8042.c: Failed to disable AUX port, can't use MUX.\n");
+ pr_err("Failed to disable AUX port, can't use MUX\n");
return -EIO;
}
@@ -676,8 +681,8 @@ static irqreturn_t __init i8042_aux_test_irq(int irq, void *dev_id)
str = i8042_read_status();
if (str & I8042_STR_OBF) {
data = i8042_read_data();
- dbg("%02x <- i8042 (aux_test_irq, %s)",
- data, str & I8042_STR_AUXDATA ? "aux" : "kbd");
+ dbg("%02x <- i8042 (aux_test_irq, %s)\n",
+ data, str & I8042_STR_AUXDATA ? "aux" : "kbd");
if (i8042_irq_being_tested &&
data == 0xa5 && (str & I8042_STR_AUXDATA))
complete(&i8042_aux_irq_delivered);
@@ -770,8 +775,8 @@ static int __init i8042_check_aux(void)
*/
if (i8042_toggle_aux(false)) {
- printk(KERN_WARNING "Failed to disable AUX port, but continuing anyway... Is this a SiS?\n");
- printk(KERN_WARNING "If AUX port is really absent please use the 'i8042.noaux' option.\n");
+ pr_warn("Failed to disable AUX port, but continuing anyway... Is this a SiS?\n");
+ pr_warn("If AUX port is really absent please use the 'i8042.noaux' option\n");
}
if (i8042_toggle_aux(true))
@@ -819,7 +824,7 @@ static int __init i8042_check_aux(void)
* AUX IRQ was never delivered so we need to flush the controller to
* get rid of the byte we put there; otherwise keyboard may not work.
*/
- dbg(" -- i8042 (aux irq test timeout)");
+ dbg(" -- i8042 (aux irq test timeout)\n");
i8042_flush();
retval = -1;
}
@@ -845,7 +850,7 @@ static int __init i8042_check_aux(void)
static int i8042_controller_check(void)
{
if (i8042_flush() == I8042_BUFFER_SIZE) {
- printk(KERN_ERR "i8042.c: No controller found.\n");
+ pr_err("No controller found\n");
return -ENODEV;
}
@@ -864,15 +869,15 @@ static int i8042_controller_selftest(void)
do {
if (i8042_command(&param, I8042_CMD_CTL_TEST)) {
- printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n");
+ pr_err("i8042 controller self test timeout\n");
return -ENODEV;
}
if (param == I8042_RET_CTL_TEST)
return 0;
- printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n",
- param, I8042_RET_CTL_TEST);
+ pr_err("i8042 controller selftest failed. (%#x != %#x)\n",
+ param, I8042_RET_CTL_TEST);
msleep(50);
} while (i++ < 5);
@@ -883,8 +888,7 @@ static int i8042_controller_selftest(void)
* and user will still get a working keyboard. This is especially
* important on netbooks. On other arches we trust hardware more.
*/
- printk(KERN_INFO
- "i8042: giving up on controller selftest, continuing anyway...\n");
+ pr_info("giving up on controller selftest, continuing anyway...\n");
return 0;
#else
return -EIO;
@@ -909,8 +913,7 @@ static int i8042_controller_init(void)
do {
if (n >= 10) {
- printk(KERN_ERR
- "i8042.c: Unable to get stable CTR read.\n");
+ pr_err("Unable to get stable CTR read\n");
return -EIO;
}
@@ -918,8 +921,7 @@ static int i8042_controller_init(void)
udelay(50);
if (i8042_command(&ctr[n++ % 2], I8042_CMD_CTL_RCTR)) {
- printk(KERN_ERR
- "i8042.c: Can't read CTR while initializing i8042.\n");
+ pr_err("Can't read CTR while initializing i8042\n");
return -EIO;
}
@@ -943,7 +945,7 @@ static int i8042_controller_init(void)
if (i8042_unlock)
i8042_ctr |= I8042_CTR_IGNKEYLOCK;
else
- printk(KERN_WARNING "i8042.c: Warning: Keylock active.\n");
+ pr_warn("Warning: Keylock active\n");
}
spin_unlock_irqrestore(&i8042_lock, flags);
@@ -970,7 +972,7 @@ static int i8042_controller_init(void)
*/
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
- printk(KERN_ERR "i8042.c: Can't write CTR while initializing i8042.\n");
+ pr_err("Can't write CTR while initializing i8042\n");
return -EIO;
}
@@ -1000,7 +1002,7 @@ static void i8042_controller_reset(void)
i8042_ctr &= ~(I8042_CTR_KBDINT | I8042_CTR_AUXINT);
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR))
- printk(KERN_WARNING "i8042.c: Can't write CTR while resetting.\n");
+ pr_warn("Can't write CTR while resetting\n");
/*
* Disable MUX mode if present.
@@ -1021,7 +1023,7 @@ static void i8042_controller_reset(void)
*/
if (i8042_command(&i8042_initial_ctr, I8042_CMD_CTL_WCTR))
- printk(KERN_WARNING "i8042.c: Can't restore CTR.\n");
+ pr_warn("Can't restore CTR\n");
}
@@ -1045,14 +1047,14 @@ static long i8042_panic_blink(int state)
led = (state) ? 0x01 | 0x04 : 0;
while (i8042_read_status() & I8042_STR_IBF)
DELAY;
- dbg("%02x -> i8042 (panic blink)", 0xed);
+ dbg("%02x -> i8042 (panic blink)\n", 0xed);
i8042_suppress_kbd_ack = 2;
i8042_write_data(0xed); /* set leds */
DELAY;
while (i8042_read_status() & I8042_STR_IBF)
DELAY;
DELAY;
- dbg("%02x -> i8042 (panic blink)", led);
+ dbg("%02x -> i8042 (panic blink)\n", led);
i8042_write_data(led);
DELAY;
return delay;
@@ -1068,9 +1070,7 @@ static void i8042_dritek_enable(void)
error = i8042_command(&param, 0x1059);
if (error)
- printk(KERN_WARNING
- "Failed to enable DRITEK extension: %d\n",
- error);
+ pr_warn("Failed to enable DRITEK extension: %d\n", error);
}
#endif
@@ -1105,10 +1105,10 @@ static int i8042_controller_resume(bool force_reset)
i8042_ctr |= I8042_CTR_AUXDIS | I8042_CTR_KBDDIS;
i8042_ctr &= ~(I8042_CTR_AUXINT | I8042_CTR_KBDINT);
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
- printk(KERN_WARNING "i8042: Can't write CTR to resume, retrying...\n");
+ pr_warn("Can't write CTR to resume, retrying...\n");
msleep(50);
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
- printk(KERN_ERR "i8042: CTR write retry failed\n");
+ pr_err("CTR write retry failed\n");
return -EIO;
}
}
@@ -1121,9 +1121,7 @@ static int i8042_controller_resume(bool force_reset)
if (i8042_mux_present) {
if (i8042_set_mux_mode(true, NULL) || i8042_enable_mux_ports())
- printk(KERN_WARNING
- "i8042: failed to resume active multiplexor, "
- "mouse won't work.\n");
+ pr_warn("failed to resume active multiplexor, mouse won't work\n");
} else if (i8042_ports[I8042_AUX_PORT_NO].serio)
i8042_enable_aux_port();
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 11:33:34 +0000