sony-laptop: additional platform attributes coming from SNY6001

Register additional platform attributes coming from the SPIC (sonypi) driver.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 204 insertions, 1 deletions

diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index cf8d7927dc5c..3e8f3aaa0923 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -774,7 +774,8 @@ static int sony_nc_add(struct acpi_device *device)
 
         }
 
-        if (sony_pf_add())
+        result = sony_pf_add();
+        if (result)
                 goto outbacklight;
 
         /* create sony_pf sysfs attributes related to the SNC device */
@@ -903,6 +904,8 @@ struct sony_pic_irq {
 
 struct sony_pic_dev {
         int                     model;
+        u8                      camera_power;
+        u8                      bluetooth_power;
         struct acpi_device      *acpi_dev;
         struct sony_pic_irq     *cur_irq;
         struct sony_pic_ioport  *cur_ioport;
@@ -1181,6 +1184,186 @@ static u8 sony_pic_call2(u8 dev, u8 fn)
         return v1;
 }
 
+static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
+{
+        u8 v1;
+
+        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
+        outb(dev, spic_dev.cur_ioport->io.minimum + 4);
+        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
+        outb(fn, spic_dev.cur_ioport->io.minimum);
+        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
+        outb(v, spic_dev.cur_ioport->io.minimum);
+        v1 = inb_p(spic_dev.cur_ioport->io.minimum);
+        dprintk("sony_pic_call3: 0x%.4x\n", v1);
+        return v1;
+}
+
+/* camera tests and poweron/poweroff */
+#define SONYPI_CAMERA_PICTURE           5
+#define SONYPI_CAMERA_MUTE_MASK         0x40
+#define SONYPI_CAMERA_CONTROL           0x10
+#define SONYPI_CAMERA_STATUS            7
+#define SONYPI_CAMERA_STATUS_READY      0x2
+#define SONYPI_CAMERA_STATUS_POSITION   0x4
+
+static int sony_pic_camera_ready(void)
+{
+        u8 v;
+
+        v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
+        return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
+}
+
+static void sony_pic_camera_off(void)
+{
+        wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
+                                SONYPI_CAMERA_MUTE_MASK),
+                        ITERATIONS_SHORT);
+
+        if (!spic_dev.camera_power)
+                return;
+
+        sony_pic_call2(0x91, 0);
+        spic_dev.camera_power = 0;
+}
+
+static void sony_pic_camera_on(void)
+{
+        int i, j;
+
+        if (spic_dev.camera_power)
+                return;
+
+        for (j = 5; j > 0; j--) {
+
+                while (sony_pic_call2(0x91, 0x1))
+                        msleep(10);
+                sony_pic_call1(0x93);
+
+                for (i = 400; i > 0; i--) {
+                        if (sony_pic_camera_ready())
+                                break;
+                        msleep(10);
+                }
+                if (i)
+                        break;
+        }
+
+        if (j == 0) {
+                printk(KERN_WARNING "sonypi: failed to power on camera\n");
+                return;
+        }
+
+        wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
+                                0x5a),
+                        ITERATIONS_SHORT);
+
+        spic_dev.camera_power = 1;
+}
+
+static ssize_t sony_pic_camerapower_store(struct device *dev,
+                struct device_attribute *attr,
+                const char *buffer, size_t count)
+{
+        unsigned long value;
+        if (count > 31)
+                return -EINVAL;
+
+        value = simple_strtoul(buffer, NULL, 10);
+        if (value)
+                sony_pic_camera_on();
+        else
+                sony_pic_camera_off();
+
+        return count;
+}
+
+static ssize_t sony_pic_camerapower_show(struct device *dev,
+                struct device_attribute *attr, char *buffer)
+{
+        return snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.camera_power);
+}
+
+/* bluetooth subsystem power state */
+static void sony_pic_set_bluetoothpower(u8 state)
+{
+        state = !!state;
+        if (spic_dev.bluetooth_power == state)
+                return;
+        sony_pic_call2(0x96, state);
+        sony_pic_call1(0x82);
+        spic_dev.bluetooth_power = state;
+}
+
+static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
+                struct device_attribute *attr,
+                const char *buffer, size_t count)
+{
+        unsigned long value;
+        if (count > 31)
+                return -EINVAL;
+
+        value = simple_strtoul(buffer, NULL, 10);
+        sony_pic_set_bluetoothpower(value);
+
+        return count;
+}
+
+static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
+                struct device_attribute *attr, char *buffer)
+{
+        return snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
+}
+
+/* fan speed */
+/* FAN0 information (reverse engineered from ACPI tables) */
+#define SONY_PIC_FAN0_STATUS    0x93
+static ssize_t sony_pic_fanspeed_store(struct device *dev,
+                struct device_attribute *attr,
+                const char *buffer, size_t count)
+{
+        unsigned long value;
+        if (count > 31)
+                return -EINVAL;
+
+        value = simple_strtoul(buffer, NULL, 10);
+        if (ec_write(SONY_PIC_FAN0_STATUS, value))
+                return -EIO;
+
+        return count;
+}
+
+static ssize_t sony_pic_fanspeed_show(struct device *dev,
+                struct device_attribute *attr, char *buffer)
+{
+        u8 value = 0;
+        if (ec_read(SONY_PIC_FAN0_STATUS, &value))
+                return -EIO;
+
+        return snprintf(buffer, PAGE_SIZE, "%d\n", value);
+}
+
+#define SPIC_ATTR(_name, _mode)                                 \
+struct device_attribute spic_attr_##_name = __ATTR(_name,       \
+                _mode, sony_pic_## _name ##_show,               \
+                sony_pic_## _name ##_store)
+
+static SPIC_ATTR(camerapower, 0644);
+static SPIC_ATTR(bluetoothpower, 0644);
+static SPIC_ATTR(fanspeed, 0644);
+
+static struct attribute *spic_attributes[] = {
+        &spic_attr_camerapower.attr,
+        &spic_attr_bluetoothpower.attr,
+        &spic_attr_fanspeed.attr,
+        NULL
+};
+
+static struct attribute_group spic_attribute_group = {
+        .attrs = spic_attributes
+};
+
 /*
  * ACPI callbacks
  */
@@ -1447,6 +1630,10 @@ static int sony_pic_remove(struct acpi_device *device, int type)
 
         sony_laptop_remove_input();
 
+        /* pf attrs */
+        sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
+        sony_pf_remove();
+
         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
                 list_del(&io->list);
                 kfree(io);
@@ -1536,8 +1723,24 @@ static int sony_pic_add(struct acpi_device *device)
                 goto err_free_irq;
         }
 
+        spic_dev.bluetooth_power = -1;
+        /* create device attributes */
+        result = sony_pf_add();
+        if (result)
+                goto err_disable_device;
+
+        result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
+        if (result)
+                goto err_remove_pf;
+
         return 0;
 
+err_remove_pf:
+        sony_pf_remove();
+
+err_disable_device:
+        sony_pic_disable(device);
+
 err_free_irq:
         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);