52 lines
1.8 KiB
Diff
52 lines
1.8 KiB
Diff
From 628dbab26b97ba2ea43791e2f1587115dc4e224b Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 27 May 2015 17:22:15 +0100
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Subject: [PATCH 071/148] bcm2835-audio: Create the platform device if the DT
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node is disabled
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For backwards compatibility, allow the built-in ALSA driver to be enabled
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either by loading the module from /etc/modules or by enabling the "/audio"
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node in DT.
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---
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arch/arm/mach-bcm2708/bcm2708.c | 10 ++++++++--
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arch/arm/mach-bcm2709/bcm2709.c | 10 ++++++++--
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2 files changed, 16 insertions(+), 4 deletions(-)
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--- a/arch/arm/mach-bcm2708/bcm2708.c
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+++ b/arch/arm/mach-bcm2708/bcm2708.c
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@@ -898,8 +898,14 @@ void __init bcm2708_init(void)
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#endif
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bcm2708_init_led();
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bcm2708_init_uart1();
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- for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
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- bcm_register_device_dt(&bcm2708_alsa_devices[i]);
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+
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+ /* Only create the platform devices for the ALSA driver in the
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+ absence of an enabled "audio" DT node */
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+ if (!use_dt ||
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+ !of_device_is_available(of_find_node_by_path("/audio"))) {
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+ for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
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+ bcm_register_device(&bcm2708_alsa_devices[i]);
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+ }
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bcm_register_device_dt(&bcm2708_spi_device);
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--- a/arch/arm/mach-bcm2709/bcm2709.c
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+++ b/arch/arm/mach-bcm2709/bcm2709.c
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@@ -918,8 +918,14 @@ void __init bcm2709_init(void)
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#endif
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bcm2709_init_led();
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bcm2709_init_uart1();
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- for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
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- bcm_register_device_dt(&bcm2708_alsa_devices[i]);
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+
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+ /* Only create the platform devices for the ALSA driver in the
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+ absence of an enabled "audio" DT node */
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+ if (!use_dt ||
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+ !of_device_is_available(of_find_node_by_path("/audio"))) {
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+ for (i = 0; i < ARRAY_SIZE(bcm2708_alsa_devices); i++)
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+ bcm_register_device(&bcm2708_alsa_devices[i]);
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+ }
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bcm_register_device_dt(&bcm2708_spi_device);
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