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- From 3ab001bd58d4578bf2beb293f93a91f81e3ad3b4 Mon Sep 17 00:00:00 2001
- From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
- Date: Fri, 26 Jun 2015 14:25:01 +0200
- Subject: [PATCH 047/381] firmware: bcm2835: Support ARCH_BCM270x
- MIME-Version: 1.0
- Content-Type: text/plain; charset=UTF-8
- Content-Transfer-Encoding: 8bit
- 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>
- ---
- drivers/firmware/raspberrypi.c | 41 +++++++++++++++++++++++++++++++++++++++--
- 1 file changed, 39 insertions(+), 2 deletions(-)
- --- a/drivers/firmware/raspberrypi.c
- +++ b/drivers/firmware/raspberrypi.c
- @@ -28,6 +28,8 @@ 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)
- @@ -183,6 +185,25 @@ rpi_firmware_print_firmware_revision(str
- }
- }
-
- +static int raspberrypi_firmware_set_power(struct rpi_firmware *fw,
- + u32 domain, bool on)
- +{
- + struct {
- + u32 domain;
- + u32 on;
- + } packet;
- + int ret;
- +
- + packet.domain = domain;
- + packet.on = on;
- + ret = rpi_firmware_property(fw, RPI_FIRMWARE_SET_POWER_STATE,
- + &packet, sizeof(packet));
- + if (!ret && packet.on != on)
- + ret = -EINVAL;
- +
- + return ret;
- +}
- +
- static int rpi_firmware_probe(struct platform_device *pdev)
- {
- struct device *dev = &pdev->dev;
- @@ -207,9 +228,13 @@ static int rpi_firmware_probe(struct pla
- init_completion(&fw->c);
-
- platform_set_drvdata(pdev, fw);
- + g_pdev = pdev;
-
- rpi_firmware_print_firmware_revision(fw);
-
- + if (raspberrypi_firmware_set_power(fw, 3, true))
- + dev_err(dev, "failed to turn on USB power\n");
- +
- return 0;
- }
-
- @@ -218,6 +243,7 @@ static int rpi_firmware_remove(struct pl
- struct rpi_firmware *fw = platform_get_drvdata(pdev);
-
- mbox_free_channel(fw->chan);
- + g_pdev = NULL;
-
- return 0;
- }
- @@ -230,7 +256,7 @@ static int rpi_firmware_remove(struct pl
- */
- 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;
- @@ -253,7 +279,18 @@ static struct platform_driver rpi_firmwa
- .probe = rpi_firmware_probe,
- .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");
|
