i2c-s3c2410: Allow more than one i2c-s3c2410 adapter

Newer SoCs such as the S3C6410 have 2 instances of this i2c
controller block in and thus require the ability to create
two seperate busses from this.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 19 insertions, 14 deletions

diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index d6343e2c5889..f14007ff2531 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -559,19 +559,6 @@ static const struct i2c_algorithm s3c24xx_i2c_algorithm = {
         .functionality          = s3c24xx_i2c_func,
 };
 
-static struct s3c24xx_i2c s3c24xx_i2c = {
-        .lock           = __SPIN_LOCK_UNLOCKED(s3c24xx_i2c.lock),
-        .wait           = __WAIT_QUEUE_HEAD_INITIALIZER(s3c24xx_i2c.wait),
-        .tx_setup       = 50,
-        .adap           = {
-                .name                   = "s3c2410-i2c",
-                .owner                  = THIS_MODULE,
-                .algo                   = &s3c24xx_i2c_algorithm,
-                .retries                = 2,
-                .class                  = I2C_CLASS_HWMON | I2C_CLASS_SPD,
-        },
-};
-
 /* s3c24xx_i2c_calcdivisor
  *
  * return the divisor settings for a given frequency
@@ -797,7 +784,7 @@ static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c)
 
 static int s3c24xx_i2c_probe(struct platform_device *pdev)
 {
-        struct s3c24xx_i2c *i2c = &s3c24xx_i2c;
+        struct s3c24xx_i2c *i2c;
         struct s3c2410_platform_i2c *pdata;
         struct resource *res;
         int ret;
@@ -808,6 +795,22 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
                 return -EINVAL;
         }
 
+        i2c = kzalloc(sizeof(struct s3c24xx_i2c), GFP_KERNEL);
+        if (!i2c) {
+                dev_err(&pdev->dev, "no memory for state\n");
+                return -ENOMEM;
+        }
+
+        strlcpy(i2c->adap.name, "s3c2410-i2c", sizeof(i2c->adap.name));
+        i2c->adap.owner   = THIS_MODULE;
+        i2c->adap.algo    = &s3c24xx_i2c_algorithm;
+        i2c->adap.retries = 2;
+        i2c->adap.class   = I2C_CLASS_HWMON | I2C_CLASS_SPD;
+        i2c->tx_setup     = 50;
+
+        spin_lock_init(&i2c->lock);
+        init_waitqueue_head(&i2c->wait);
+
         /* find the clock and enable it */
 
         i2c->dev = &pdev->dev;
@@ -929,6 +932,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
         clk_put(i2c->clk);
 
  err_noclk:
+        kfree(i2c);
         return ret;
 }
 
@@ -953,6 +957,7 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev)
 
         release_resource(i2c->ioarea);
         kfree(i2c->ioarea);
+        kfree(i2c);
 
         return 0;
 }