firmware: bcm2835: Support ARCH_BCM270x

Support booting without Device Tree.
Turn on USB power.
Load driver early because of lacking support for deferred probing
in many drivers.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
firmware: bcm2835: Don't turn on USB power

The raspberrypi-power driver is now used to turn on USB power.

This partly reverts commit:
firmware: bcm2835: Support ARCH_BCM270x

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>

diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index da26a58..7162f6d 100644 (file)
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -29,6 +29,8 @@ struct rpi_firmware {
        u32 enabled;
 };
 
+static struct platform_device *g_pdev;
+
 static DEFINE_MUTEX(transaction_lock);
 
 static void response_callback(struct mbox_client *cl, void *msg)
@@ -238,6 +240,7 @@ static int rpi_firmware_probe(struct platform_device *pdev)
        init_completion(&fw->c);
 
        platform_set_drvdata(pdev, fw);
+       g_pdev = pdev;
 
        rpi_firmware_print_firmware_revision(fw);
        rpi_register_hwmon_driver(dev, fw);
@@ -265,6 +268,7 @@ static int rpi_firmware_remove(struct platform_device *pdev)
        platform_device_unregister(rpi_clk);
        rpi_clk = NULL;
        mbox_free_channel(fw->chan);
+       g_pdev = NULL;
 
        return 0;
 }
@@ -277,7 +281,7 @@ static int rpi_firmware_remove(struct platform_device *pdev)
  */
 struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
 {
-       struct platform_device *pdev = of_find_device_by_node(firmware_node);
+       struct platform_device *pdev = g_pdev;
 
        if (!pdev)
                return NULL;
@@ -301,7 +305,18 @@ static struct platform_driver rpi_firmware_driver = {
        .shutdown       = rpi_firmware_shutdown,
        .remove         = rpi_firmware_remove,
 };
-module_platform_driver(rpi_firmware_driver);
+
+static int __init rpi_firmware_init(void)
+{
+       return platform_driver_register(&rpi_firmware_driver);
+}
+subsys_initcall(rpi_firmware_init);
+
+static void __init rpi_firmware_exit(void)
+{
+       platform_driver_unregister(&rpi_firmware_driver);
+}
+module_exit(rpi_firmware_exit);
 
 MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
 MODULE_DESCRIPTION("Raspberry Pi firmware driver");