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Diffstat (limited to 'sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r151/applesmc_int.patch')
-rw-r--r--sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r151/applesmc_int.patch414
1 files changed, 414 insertions, 0 deletions
diff --git a/sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r151/applesmc_int.patch b/sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r151/applesmc_int.patch
new file mode 100644
index 0000000..d69f9df
--- /dev/null
+++ b/sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r151/applesmc_int.patch
@@ -0,0 +1,414 @@
+Add interrupt support for the accelerometer. A message is printed in dmesg when an interrupt occurs, but no further handling is done.
+
+From: Nicolas Boichat <nicolas@boichat.ch>
+
+
+---
+
+ drivers/hwmon/applesmc.c | 320 +++++++++++++++++++++++++++++++++++++++++++---
+ 1 files changed, 297 insertions(+), 23 deletions(-)
+
+diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
+index 3b09cdb..8f75b57 100644
+--- a/drivers/hwmon/applesmc.c
++++ b/drivers/hwmon/applesmc.c
+@@ -39,14 +39,20 @@
+ #include <linux/leds.h>
+ #include <linux/hwmon.h>
+ #include <linux/workqueue.h>
++#include <linux/interrupt.h>
+
+ /* data port used by Apple SMC */
+ #define APPLESMC_DATA_PORT 0x300
+ /* command/status port used by Apple SMC */
+ #define APPLESMC_CMD_PORT 0x304
++/* status port used by Apple SMC to get which interrupt type just happened */
++#define APPLESMC_INT_PORT 0x31f
+
+ #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */
+
++/* Defined in ACPI DSDT table, should we read it from there? */
++#define APPLESMC_IRQ 6
++
+ #define APPLESMC_MAX_DATA_LENGTH 32
+
+ #define APPLESMC_STATUS_MASK 0x0f
+@@ -57,6 +63,8 @@
+
+ #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */
+
++#define INTERRUPT_OK_KEY "NTOK" /* w-o ui8 */
++
+ #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6 bytes) */
+ #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6 bytes) */
+ #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */
+@@ -68,6 +76,19 @@
+ #define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */
+ #define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */
+
++/*
++ * Interrupt controls.
++ * If the norm of the position (sqrt(MO_X^2+MO_Y^2+MO_Z^2)) is smaller than
++ * MOLT (free fall), or bigger than MOHT (high acceleration) for longer than the
++ * value of MOLD (or MOHD), SMC will trigger an interrupt.
++ */
++#define MOTION_LOW_NORM "MOLT" /* r/w sp78 (2 bytes) */
++#define MOTION_HIGH_NORM "MOHT" /* r/w sp78 (2 bytes) */
++#define MOTION_LOW_NORM_INTERVAL "MOLD" /* r/w ui8 */
++#define MOTION_HIGH_NORM_INTERVAL "MOHD" /* r/w ui8 */
++
++#define MSDW_KEY "MSDW" /* r/w flag (1 byte) */
++
+ #define FANS_COUNT "FNum" /* r-o ui8 */
+ #define FANS_MANUAL "FS! " /* r-w ui16 */
+ #define FAN_ACTUAL_SPEED "F0Ac" /* r-o fpe2 (2 bytes) */
+@@ -385,12 +406,83 @@ static int applesmc_read_motion_sensor(int index, s16* value)
+ }
+
+ /*
++ * applesmc_init_check_key_value - checks if a given key contains the bytes in
++ * buffer, if not, writes these bytes.
++ * In case of failure retry every INIT_WAIT_MSECS msec, and timeout if it
++ * waited more than INIT_TIMEOUT_MSECS in total.
++ * Returns zero on success or a negative error on failure. Callers must
++ * hold applesmc_lock.
++ */
++static int applesmc_init_check_key_value(const char *key, u8 *buffer, u8 len)
++{
++ int total, ret, i, compare;
++ u8 rdbuffer[APPLESMC_MAX_DATA_LENGTH];
++
++ if (len > APPLESMC_MAX_DATA_LENGTH) {
++ printk(KERN_ERR "applesmc_init_check_key_value: cannot "
++ "read/write more than %d bytes",
++ APPLESMC_MAX_DATA_LENGTH);
++ return -EINVAL;
++ }
++
++ for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
++ ret = applesmc_read_key(key, rdbuffer, len);
++ if (!ret) {
++ compare = 1;
++ for (i = 0; i < len; i++) {
++ if (rdbuffer[i] != buffer[i]) {
++ compare = 0;
++ break;
++ }
++ }
++
++ if (compare) {
++ return 0;
++ }
++ }
++ ret = applesmc_write_key(key, buffer, len);
++ msleep(INIT_WAIT_MSECS);
++ }
++
++ if (ret)
++ return ret;
++ else
++ return -EIO;
++}
++
++irqreturn_t applesmc_irq_handler(int irq, void *dev_id)
++{
++ u8 int_type = inb(APPLESMC_INT_PORT);
++
++ switch (int_type) {
++ case 0x60:
++ printk(KERN_INFO "applesmc: received a free fall interrupt\n");
++ break;
++ case 0x6f:
++ printk(KERN_INFO
++ "applesmc: received a high acceleration interrupt\n");
++ break;
++ case 0x80:
++ printk(KERN_INFO "applesmc: received a shock interrupt\n");
++ break;
++ default:
++ printk(KERN_INFO
++ "applesmc: received an unknown interrupt %x\n",
++ int_type);
++ }
++
++ return IRQ_HANDLED;
++}
++
++/*
+ * applesmc_device_init - initialize the accelerometer. Returns zero on success
+ * and negative error code on failure. Can sleep.
+ */
+ static int applesmc_device_init(void)
+ {
+- int total, ret = -ENXIO;
++ int total;
++ int ret = -ENXIO;
++ int ret1, ret2;
+ u8 buffer[2];
+
+ if (!applesmc_accelerometer)
+@@ -398,32 +490,79 @@ static int applesmc_device_init(void)
+
+ mutex_lock(&applesmc_lock);
+
++ /* Accept interrupts */
++ buffer[0] = 0x01;
+ for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
+- if (debug)
+- printk(KERN_DEBUG "applesmc try %d\n", total);
+- if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) &&
+- (buffer[0] != 0x00 || buffer[1] != 0x00)) {
+- if (total == INIT_TIMEOUT_MSECS) {
+- printk(KERN_DEBUG "applesmc: device has"
+- " already been initialized"
+- " (0x%02x, 0x%02x).\n",
+- buffer[0], buffer[1]);
+- } else {
+- printk(KERN_DEBUG "applesmc: device"
+- " successfully initialized"
+- " (0x%02x, 0x%02x).\n",
+- buffer[0], buffer[1]);
+- }
+- ret = 0;
+- goto out;
+- }
+- buffer[0] = 0xe0;
+- buffer[1] = 0x00;
+- applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2);
++ ret1 = applesmc_write_key(INTERRUPT_OK_KEY, buffer, 1);
++ msleep(INIT_WAIT_MSECS);
++
++ if (!ret1)
++ break;
++ }
++ if (ret1)
++ printk(KERN_WARNING "applesmc: Cannot set NTOK key, "
++ "will not receive interrupts.\n");
++
++ /* Setup interrupt controls. */
++ buffer[0] = 20; /* 20 msecs */
++ ret1 = applesmc_init_check_key_value(MOTION_LOW_NORM_INTERVAL,
++ buffer, 1);
++
++ buffer[0] = 20; /* 20 msecs */
++ ret2 = applesmc_init_check_key_value(MOTION_HIGH_NORM_INTERVAL,
++ buffer, 1);
++
++ if (ret1 || ret2) {
++ printk(KERN_WARNING "applesmc: Cannot set motion sensor "
++ "interrupt interval, might not receive "
++ "some interrupts.");
++ }
++
++ buffer[0] = 0x00;
++ buffer[1] = 0x60;
++ ret1 = applesmc_init_check_key_value(MOTION_LOW_NORM, buffer, 2);
++
++ buffer[0] = 0x01;
++ buffer[1] = 0xc0;
++ ret2 = applesmc_init_check_key_value(MOTION_HIGH_NORM, buffer, 2);
++
++ if (ret1 || ret2) {
++ printk(KERN_WARNING "applesmc: Cannot set motion sensor "
++ "min/max norm parameters, "
++ "might not receive some interrupts.");
++ }
++
++ /* Mysterious key. */
++ buffer[0] = 0x01;
++ for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
++ ret1 = applesmc_write_key(MSDW_KEY, buffer, 1);
+ msleep(INIT_WAIT_MSECS);
++
++ if (!ret1)
++ break;
++ }
++ if (ret1)
++ printk(KERN_WARNING "applesmc: Cannot set MSDW key\n");
++
++ /* Initialize the device. */
++ buffer[0] = 0xe0;
++ buffer[1] = 0xf8;
++ if (applesmc_init_check_key_value(MOTION_SENSOR_KEY, buffer, 2)) {
++ printk(KERN_WARNING "applesmc: failed to init "
++ "the accelerometer\n");
++ goto out;
+ }
+
+- printk(KERN_WARNING "applesmc: failed to init the device\n");
++ ret1 = request_irq(APPLESMC_IRQ, applesmc_irq_handler, IRQF_DISABLED,
++ "applesmc_irq_handler", NULL);
++
++ if (ret1) {
++ printk(KERN_WARNING "applesmc: cannot setup irq handler\n");
++ }
++
++ printk(KERN_DEBUG "applesmc: accelerometer "
++ "successfully initialized.\n");
++ ret = 0;
+
+ out:
+ mutex_unlock(&applesmc_lock);
+@@ -468,9 +607,16 @@ static int applesmc_resume(struct platform_device *dev)
+ return applesmc_device_init();
+ }
+
++static int applesmc_remove(struct platform_device *dev)
++{
++ free_irq(APPLESMC_IRQ, NULL);
++ return 0;
++}
++
+ static struct platform_driver applesmc_driver = {
+ .probe = applesmc_probe,
+ .resume = applesmc_resume,
++ .remove = applesmc_remove,
+ .driver = {
+ .name = "applesmc",
+ .owner = THIS_MODULE,
+@@ -932,6 +1078,122 @@ static ssize_t applesmc_key_at_index_store(struct device *dev,
+ return count;
+ }
+
++static ssize_t applesmc_accelerometer_show(struct device *dev,
++ struct device_attribute *attr, char *sysfsbuf)
++{
++ int ret;
++ unsigned int value = 0;
++ u8 buffer[2];
++ char *key;
++ int length;
++ struct sensor_device_attribute_2 *sensor_attr =
++ to_sensor_dev_attr_2(attr);
++
++ switch (sensor_attr->index) {
++ case 0:
++ key = MOTION_LOW_NORM_INTERVAL;
++ length = 1;
++ break;
++ case 1:
++ key = MOTION_HIGH_NORM_INTERVAL;
++ length = 1;
++ break;
++ case 2:
++ key = MOTION_LOW_NORM;
++ length = 2;
++ break;
++ case 3:
++ key = MOTION_HIGH_NORM;
++ length = 2;
++ break;
++ default:
++ printk(KERN_ERR
++ "Invalid index for applesmc_accelerometer_show");
++ return -EINVAL;
++ }
++
++ mutex_lock(&applesmc_lock);
++
++ ret = applesmc_read_key(key, buffer, length);
++ if (length == 2)
++ value = ((unsigned int)buffer[0] << 8) | buffer[1];
++ else if (length == 1)
++ value = buffer[0];
++ else {
++ printk("Invalid length for applesmc_param_show");
++ ret = -EINVAL;
++ }
++
++ mutex_unlock(&applesmc_lock);
++ if (ret)
++ return ret;
++ else
++ return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", value);
++}
++
++static ssize_t applesmc_accelerometer_store(struct device *dev,
++ struct device_attribute *attr,
++ const char *sysfsbuf, size_t count)
++{
++ int ret;
++ u32 value;
++ u8 buffer[2];
++ char *key;
++ int length;
++ struct sensor_device_attribute_2 *sensor_attr =
++ to_sensor_dev_attr_2(attr);
++
++ switch (sensor_attr->index) {
++ case 0:
++ key = MOTION_LOW_NORM_INTERVAL;
++ length = 1;
++ break;
++ case 1:
++ key = MOTION_HIGH_NORM_INTERVAL;
++ length = 1;
++ break;
++ case 2:
++ key = MOTION_LOW_NORM;
++ length = 2;
++ break;
++ case 3:
++ key = MOTION_HIGH_NORM;
++ length = 2;
++ break;
++ default:
++ printk("Invalid index for applesmc_accelerometer_show");
++ return -EINVAL;
++ }
++
++ value = simple_strtoul(sysfsbuf, NULL, 10);
++
++ if (length == 2) {
++ if (value > 0xffff)
++ return -EINVAL;
++
++ buffer[0] = (value >> 8) & 0xff;
++ buffer[1] = value & 0xff;
++ } else if (length == 1) {
++ if (value > 0xff)
++ return -EINVAL;
++
++ buffer[0] = value & 0xff;
++ } else {
++ printk("Invalid length for applesmc_param_store");
++ return -EINVAL;
++ }
++
++ mutex_lock(&applesmc_lock);
++
++ ret = applesmc_write_key(key, buffer, length);
++
++ mutex_unlock(&applesmc_lock);
++
++ if (ret)
++ return ret;
++ else
++ return count;
++}
+ static struct led_classdev applesmc_backlight = {
+ .name = "smc:kbd_backlight",
+ .default_trigger = "nand-disk",
+@@ -943,10 +1205,22 @@ static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
+ static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
+ static DEVICE_ATTR(calibrate, 0644,
+ applesmc_calibrate_show, applesmc_calibrate_store);
++static SENSOR_DEVICE_ATTR(low_norm_trigger_interval, 0644,
++ applesmc_accelerometer_show, applesmc_accelerometer_store, 0);
++static SENSOR_DEVICE_ATTR(high_norm_trigger_interval, 0644,
++ applesmc_accelerometer_show, applesmc_accelerometer_store, 1);
++static SENSOR_DEVICE_ATTR(low_norm_trigger, 0644,
++ applesmc_accelerometer_show, applesmc_accelerometer_store, 2);
++static SENSOR_DEVICE_ATTR(high_norm_trigger, 0644,
++ applesmc_accelerometer_show, applesmc_accelerometer_store, 3);
+
+ static struct attribute *accelerometer_attributes[] = {
+ &dev_attr_position.attr,
+ &dev_attr_calibrate.attr,
++ &sensor_dev_attr_low_norm_trigger.dev_attr.attr,
++ &sensor_dev_attr_high_norm_trigger.dev_attr.attr,
++ &sensor_dev_attr_low_norm_trigger_interval.dev_attr.attr,
++ &sensor_dev_attr_high_norm_trigger_interval.dev_attr.attr,
+ NULL
+ };
+