sony-laptop: complete the motion eye camera support in sony-laptop

Add the exported sony_pic_camera_command() function to make the MEYE
driver happy.

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

1 files changed, 90 insertions, 18 deletions

diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 2787e1ce8911..bc863f5efd5d 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -1220,11 +1220,35 @@ static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
 
 /* 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
+
+#define SONYPI_CAMERA_BRIGHTNESS                0
+#define SONYPI_CAMERA_CONTRAST                  1
+#define SONYPI_CAMERA_HUE                       2
+#define SONYPI_CAMERA_COLOR                     3
+#define SONYPI_CAMERA_SHARPNESS                 4
+
+#define SONYPI_CAMERA_EXPOSURE_MASK             0xC
+#define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
+#define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
+#define SONYPI_CAMERA_MUTE_MASK                 0x40
+
+/* the rest don't need a loop until not 0xff */
+#define SONYPI_CAMERA_AGC                       6
+#define SONYPI_CAMERA_AGC_MASK                  0x30
+#define SONYPI_CAMERA_SHUTTER_MASK              0x7
+
+#define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
+#define SONYPI_CAMERA_CONTROL                   0x10
+
+#define SONYPI_CAMERA_STATUS                    7
+#define SONYPI_CAMERA_STATUS_READY              0x2
+#define SONYPI_CAMERA_STATUS_POSITION           0x4
+
+#define SONYPI_DIRECTION_BACKWARDS              0x4
+
+#define SONYPI_CAMERA_REVISION                  8
+#define SONYPI_CAMERA_ROMVERSION                9
 
 static int __sony_pic_camera_ready(void)
 {
@@ -1234,14 +1258,13 @@ static int __sony_pic_camera_ready(void)
         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
 }
 
-static int sony_pic_camera_off(void)
+static int __sony_pic_camera_off(void)
 {
         if (!camera) {
                 printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
                 return -ENODEV;
         }
 
-        mutex_lock(&spic_dev.lock);
         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
                                 SONYPI_CAMERA_MUTE_MASK),
                         ITERATIONS_SHORT);
@@ -1250,23 +1273,20 @@ static int sony_pic_camera_off(void)
                 sony_pic_call2(0x91, 0);
                 spic_dev.camera_power = 0;
         }
-        mutex_unlock(&spic_dev.lock);
         return 0;
 }
 
-static int sony_pic_camera_on(void)
+static int __sony_pic_camera_on(void)
 {
         int i, j, x;
-        int result = 0;
 
         if (!camera) {
                 printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
                 return -ENODEV;
         }
 
-        mutex_lock(&spic_dev.lock);
         if (spic_dev.camera_power)
-                goto out_unlock;
+                return 0;
 
         for (j = 5; j > 0; j--) {
 
@@ -1285,8 +1305,7 @@ static int sony_pic_camera_on(void)
 
         if (j == 0) {
                 printk(KERN_WARNING DRV_PFX "failed to power on camera\n");
-                result = -ENODEV;
-                goto out_unlock;
+                return -ENODEV;
         }
 
         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
@@ -1294,9 +1313,6 @@ static int sony_pic_camera_on(void)
                         ITERATIONS_SHORT);
 
         spic_dev.camera_power = 1;
-
-out_unlock:
-        mutex_unlock(&spic_dev.lock);
         return 0;
 }
 
@@ -1310,10 +1326,13 @@ static ssize_t sony_pic_camerapower_store(struct device *dev,
                 return -EINVAL;
 
         value = simple_strtoul(buffer, NULL, 10);
+
+        mutex_lock(&spic_dev.lock);
         if (value)
-                result = sony_pic_camera_on();
+                result = __sony_pic_camera_on();
         else
-                result = sony_pic_camera_off();
+                result = __sony_pic_camera_off();
+        mutex_unlock(&spic_dev.lock);
 
         if (result)
                 return result;
@@ -1331,6 +1350,59 @@ static ssize_t sony_pic_camerapower_show(struct device *dev,
         return count;
 }
 
+/* External camera command (exported to the motion eye v4l driver) */
+int sony_pic_camera_command(int command, u8 value)
+{
+        if (!camera)
+                return -EIO;
+
+        mutex_lock(&spic_dev.lock);
+
+        switch (command) {
+        case SONYPI_COMMAND_SETCAMERA:
+                if (value)
+                        __sony_pic_camera_on();
+                else
+                        __sony_pic_camera_off();
+                break;
+        case SONYPI_COMMAND_SETCAMERABRIGHTNESS:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
+                                ITERATIONS_SHORT);
+                break;
+        case SONYPI_COMMAND_SETCAMERACONTRAST:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
+                                ITERATIONS_SHORT);
+                break;
+        case SONYPI_COMMAND_SETCAMERAHUE:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
+                                ITERATIONS_SHORT);
+                break;
+        case SONYPI_COMMAND_SETCAMERACOLOR:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
+                                ITERATIONS_SHORT);
+                break;
+        case SONYPI_COMMAND_SETCAMERASHARPNESS:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
+                                ITERATIONS_SHORT);
+                break;
+        case SONYPI_COMMAND_SETCAMERAPICTURE:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
+                                ITERATIONS_SHORT);
+                break;
+        case SONYPI_COMMAND_SETCAMERAAGC:
+                wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
+                                ITERATIONS_SHORT);
+                break;
+        default:
+                printk(KERN_ERR DRV_PFX "sony_pic_camera_command invalid: %d\n",
+                       command);
+                break;
+        }
+        mutex_unlock(&spic_dev.lock);
+        return 0;
+}
+EXPORT_SYMBOL(sony_pic_camera_command);
+
 /* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
 static void sony_pic_set_wwanpower(u8 state)
 {