target/linux/brcm2708/patches-4.9/0050-firmware-bcm2835-Support-ARCH_BCM270x.patch

   1 From f281fd683848cd432f7b73c869676be6362ce1b8 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
   3 Date: Fri, 26 Jun 2015 14:25:01 +0200
   4 Subject: [PATCH] firmware: bcm2835: Support ARCH_BCM270x
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Support booting without Device Tree.
  10 Turn on USB power.
  11 Load driver early because of lacking support for deferred probing
  12 in many drivers.
  13
  14 Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
  15
  16 firmware: bcm2835: Don't turn on USB power
  17
  18 The raspberrypi-power driver is now used to turn on USB power.
  19
  20 This partly reverts commit:
  21 firmware: bcm2835: Support ARCH_BCM270x
  22
  23 Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
  24 ---
  25  drivers/firmware/raspberrypi.c | 19 +++++++++++++++++--
  26  1 file changed, 17 insertions(+), 2 deletions(-)
  27
  28 --- a/drivers/firmware/raspberrypi.c
  29 +++ b/drivers/firmware/raspberrypi.c
  30 @@ -28,6 +28,8 @@ struct rpi_firmware {
  31         u32 enabled;
  32  };
  33
  34 +static struct platform_device *g_pdev;
  35 +
  36  static DEFINE_MUTEX(transaction_lock);
  37
  38  static void response_callback(struct mbox_client *cl, void *msg)
  39 @@ -207,6 +209,7 @@ static int rpi_firmware_probe(struct pla
  40         init_completion(&fw->c);
  41
  42         platform_set_drvdata(pdev, fw);
  43 +       g_pdev = pdev;
  44
  45         rpi_firmware_print_firmware_revision(fw);
  46
  47 @@ -218,6 +221,7 @@ static int rpi_firmware_remove(struct pl
  48         struct rpi_firmware *fw = platform_get_drvdata(pdev);
  49
  50         mbox_free_channel(fw->chan);
  51 +       g_pdev = NULL;
  52
  53         return 0;
  54  }
  55 @@ -230,7 +234,7 @@ static int rpi_firmware_remove(struct pl
  56   */
  57  struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
  58  {
  59 -       struct platform_device *pdev = of_find_device_by_node(firmware_node);
  60 +       struct platform_device *pdev = g_pdev;
  61
  62         if (!pdev)
  63                 return NULL;
  64 @@ -253,7 +257,18 @@ static struct platform_driver rpi_firmwa
  65         .probe          = rpi_firmware_probe,
  66         .remove         = rpi_firmware_remove,
  67  };
  68 -module_platform_driver(rpi_firmware_driver);
  69 +
  70 +static int __init rpi_firmware_init(void)
  71 +{
  72 +       return platform_driver_register(&rpi_firmware_driver);
  73 +}
  74 +subsys_initcall(rpi_firmware_init);
  75 +
  76 +static void __init rpi_firmware_exit(void)
  77 +{
  78 +       platform_driver_unregister(&rpi_firmware_driver);
  79 +}
  80 +module_exit(rpi_firmware_exit);
  81
  82  MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
  83  MODULE_DESCRIPTION("Raspberry Pi firmware driver");