2019-08-09 17:50:30 +00:00
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From 53433ceaacdb15fe60eefcc268f2fe168f04c1e2 Mon Sep 17 00:00:00 2001
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2019-07-09 18:32:28 +00:00
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From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
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Date: Fri, 26 Jun 2015 14:25:01 +0200
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2019-08-09 17:50:30 +00:00
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Subject: [PATCH 055/773] firmware: bcm2835: Support ARCH_BCM270x
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2019-07-09 18:32:28 +00:00
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Support booting without Device Tree.
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Turn on USB power.
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Load driver early because of lacking support for deferred probing
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in many drivers.
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Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
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firmware: bcm2835: Don't turn on USB power
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The raspberrypi-power driver is now used to turn on USB power.
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This partly reverts commit:
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firmware: bcm2835: Support ARCH_BCM270x
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Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
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---
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drivers/firmware/raspberrypi.c | 19 +++++++++++++++++--
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1 file changed, 17 insertions(+), 2 deletions(-)
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--- a/drivers/firmware/raspberrypi.c
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+++ b/drivers/firmware/raspberrypi.c
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@@ -32,6 +32,8 @@ struct rpi_firmware {
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u32 enabled;
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};
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+static struct platform_device *g_pdev;
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+
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static DEFINE_MUTEX(transaction_lock);
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static void response_callback(struct mbox_client *cl, void *msg)
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@@ -229,6 +231,7 @@ static int rpi_firmware_probe(struct pla
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init_completion(&fw->c);
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platform_set_drvdata(pdev, fw);
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+ g_pdev = pdev;
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rpi_firmware_print_firmware_revision(fw);
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rpi_register_hwmon_driver(dev, fw);
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@@ -243,6 +246,7 @@ static int rpi_firmware_remove(struct pl
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platform_device_unregister(rpi_hwmon);
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rpi_hwmon = NULL;
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mbox_free_channel(fw->chan);
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+ g_pdev = NULL;
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return 0;
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}
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@@ -255,7 +259,7 @@ static int rpi_firmware_remove(struct pl
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*/
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struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
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{
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- struct platform_device *pdev = of_find_device_by_node(firmware_node);
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+ struct platform_device *pdev = g_pdev;
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if (!pdev)
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return NULL;
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@@ -278,7 +282,18 @@ static struct platform_driver rpi_firmwa
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.probe = rpi_firmware_probe,
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.remove = rpi_firmware_remove,
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};
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-module_platform_driver(rpi_firmware_driver);
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+
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+static int __init rpi_firmware_init(void)
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+{
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+ return platform_driver_register(&rpi_firmware_driver);
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+}
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+subsys_initcall(rpi_firmware_init);
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+
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+static void __init rpi_firmware_exit(void)
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+{
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+ platform_driver_unregister(&rpi_firmware_driver);
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+}
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+module_exit(rpi_firmware_exit);
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MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
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MODULE_DESCRIPTION("Raspberry Pi firmware driver");
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