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>
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 805f03b..759a6fc 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -1167,6 +1167,21 @@
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 @@
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 @@
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 @@
/* Disconnect from the SPI framework */
spi_unregister_master(drv_data->master);
+ setup_pin_mux(0);
+
/* Prevent double remove */
platform_set_drvdata(pdev, NULL);