diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0114-firmware-bcm2835-Support-ARCH_BCM270x.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0114-firmware-bcm2835-Support-ARCH_BCM270x.patch | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0114-firmware-bcm2835-Support-ARCH_BCM270x.patch b/target/linux/brcm2708/patches-4.1/0114-firmware-bcm2835-Support-ARCH_BCM270x.patch new file mode 100644 index 0000000000..d5adb59e7c --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0114-firmware-bcm2835-Support-ARCH_BCM270x.patch @@ -0,0 +1,106 @@ +From d72c334f7fe3305ae13034ac0562123c26820ade 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 114/121] 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"); |