spi: bfin spi uses portmux calls

Use new Blackfin portmux interface, add error handling.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 22 insertions, 6 deletions

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 805f03bb5ef9..759a6fc9b4d4 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -1167,6 +1167,21 @@ static inline int destroy_queue(struct driver_data *drv_data)
         return 0;
 }
 
+static int setup_pin_mux(int action)
+{
+
+        u16 pin_req[] = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0};
+
+        if (action) {
+                if (peripheral_request_list(pin_req, DRV_NAME))
+                        return -EFAULT;
+        } else {
+                peripheral_free_list(pin_req);
+        }
+
+        return 0;
+}
+
 static int __init bfin5xx_spi_probe(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
@@ -1184,12 +1199,9 @@ static int __init bfin5xx_spi_probe(struct platform_device *pdev)
                 return -ENOMEM;
         }
 
-        if (peripheral_request(P_SPI0_SCK, DRV_NAME) ||
-                 peripheral_request(P_SPI0_MISO, DRV_NAME) ||
-                 peripheral_request(P_SPI0_MOSI, DRV_NAME)) {
-
+        if (setup_pin_mux(1)) {
                 dev_err(&pdev->dev, ": Requesting Peripherals failed\n");
-                goto out_error_queue_alloc;
+                goto out_error;
         }
 
         drv_data = spi_master_get_devdata(master);
@@ -1225,9 +1237,11 @@ static int __init bfin5xx_spi_probe(struct platform_device *pdev)
         dev_dbg(&pdev->dev, "controller probe successfully\n");
         return status;
 
-      out_error_queue_alloc:
+out_error_queue_alloc:
         destroy_queue(drv_data);
+out_error:
         spi_master_put(master);
+
         return status;
 }
 
@@ -1257,6 +1271,8 @@ static int __devexit bfin5xx_spi_remove(struct platform_device *pdev)
         /* Disconnect from the SPI framework */
         spi_unregister_master(drv_data->master);
 
+        setup_pin_mux(0);
+
         /* Prevent double remove */
         platform_set_drvdata(pdev, NULL);